Quartz (SiO2). A glassy or crystalline form of silicon dioxide. Many colored varieties are semiprecious stones. (From Grant & Hackh's Chemical Dictionary, 5th ed)
The use of a quartz crystal microbalance for measuring weights and forces in the micro- to nanogram range. It is used to study the chemical and mechanical properties of thin layers, such as polymer coatings and lipid membranes; and interactions between molecues.
A form of pneumoconiosis resulting from inhalation of dust containing crystalline form of SILICON DIOXIDE, usually in the form of quartz. Amorphous silica is relatively nontoxic.
Standards for limiting worker exposure to airborne contaminants. They are the maximum concentration in air at which it is believed that a particular substance will not produce adverse health effects with repeated daily exposure. It can be a time-weighted average (TLV-TWA), a short-term value (TLV-STEL), or an instantaneous value (TLV-Ceiling). They are expressed either as parts per million (ppm) or milligram per cubic meter (mg/m3).
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.
Inhibits the cytotoxic action of quartz and is reported to have delayed the development of experimental silicosis in rats.
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
Inorganic compounds that contain silicon as an integral part of the molecule.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
Any of a variety of procedures which use biomolecular probes to measure the presence or concentration of biological molecules, biological structures, microorganisms, etc., by translating a biochemical interaction at the probe surface into a quantifiable physical signal.
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.
Characteristics or attributes of the outer boundaries of objects, including molecules.
A body of stories, the origins of which may be unknown or forgotten, that serve to explain practices, beliefs, institutions or natural phenomena. Mythology includes legends and folk tales. It may refer to classical mythology or to a body of modern thought and modern life. (From Webster's 1st ed)
Objects of precious metal usually containing gems and worn to enhance personal appearance. Health concerns include possible contamination from lead content or bacteria.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Areas set apart as burial grounds.
That phase of clinical dentistry concerned with the restoration of parts of existing teeth that are defective through disease, trauma, or abnormal development, to the state of normal function, health, and esthetics, including preventive, diagnostic, biological, mechanical, and therapeutic techniques, as well as material and instrument science and application. (Jablonski's Dictionary of Dentistry, 2d ed, p237)
A group of related plant alkaloids that contain the BERBERINE heterocyclic ring structure.
A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].
Native, inorganic or fossilized organic substances having a definite chemical composition and formed by inorganic reactions. They may occur as individual crystals or may be disseminated in some other mineral or rock. (Grant & Hackh's Chemical Dictionary, 5th ed; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)
A province of eastern Canada. Its capital is Quebec. The region belonged to France from 1627 to 1763 when it was lost to the British. The name is from the Algonquian quilibek meaning the place where waters narrow, referring to the gradually narrowing channel of the St. Lawrence or to the narrows of the river at Cape Diamond. (From Webster's New Geographical Dictionary, 1988, p993 & Room, Brewer's Dictionary of Names, 1992, p440)
The largest country in North America, comprising 10 provinces and three territories. Its capital is Ottawa.
The field which deals with illustrative clarification of biomedical concepts, as in the use of diagrams and drawings. The illustration may be produced by hand, photography, computer, or other electronic or mechanical methods.
An agency of the UNITED STATES PUBLIC HEALTH SERVICE that conducts and supports programs for the prevention and control of disease and provides consultation and assistance to health departments and other countries.
Large vessels propelled by power or sail used for transportation on rivers, seas, oceans, or other navigable waters. Boats are smaller vessels propelled by oars, paddles, sail, or power; they may or may not have a deck.
Spontaneous or voluntary recreational activities pursued for enjoyment and accessories or equipment used in the activities; includes games, toys, etc.
The process of minimizing risk to an organization by developing systems to identify and analyze potential hazards to prevent accidents, injuries, and other adverse occurrences, and by attempting to handle events and incidents which do occur in such a manner that their effect and cost are minimized. Effective risk management has its greatest benefits in application to insurance in order to avert or minimize financial liability. (From Slee & Slee: Health care terms, 2d ed)
A form of interactive entertainment in which the player controls electronically generated images that appear on a video display screen. This includes video games played in the home on special machines or home computers, and those played in arcades.
Theoretical construct used in applied mathematics to analyze certain situations in which there is an interplay between parties that may have similar, opposed, or mixed interests. In a typical game, decision-making "players," who each have their own goals, try to gain advantage over the other parties by anticipating each other's decisions; the game is finally resolved as a consequence of the players' decisions.
Diamond. A crystalline form of carbon that occurs as hard, colorless or tinted isomeric crystals. It is used as a precious stone, for cutting glass, and as bearings for delicate mechanisms. (From Grant & Hackh's Chemical Dictionary, 5th ed)
Therapeutic practices which are not currently considered an integral part of conventional allopathic medical practice. They may lack biomedical explanations but as they become better researched some (PHYSICAL THERAPY MODALITIES; DIET; ACUPUNCTURE) become widely accepted whereas others (humors, radium therapy) quietly fade away, yet are important historical footnotes. Therapies are termed as Complementary when used in addition to conventional treatments and as Alternative when used instead of conventional treatment.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The pressure due to the weight of fluid.
Resistance and recovery from distortion of shape.
The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned.
An acronym for Acute Physiology and Chronic Health Evaluation, a scoring system using routinely collected data and providing an accurate, objective description for a broad range of intensive care unit admissions, measuring severity of illness in critically ill patients.
A family of highly conserved serine-threonine kinases that are involved in the regulation of MITOSIS. They are involved in many aspects of cell division, including centrosome duplication, SPINDLE APPARATUS formation, chromosome alignment, attachment to the spindle, checkpoint activation, and CYTOKINESIS.
An aurora kinase that is a component of the chromosomal passenger protein complex and is involved in the regulation of MITOSIS. It mediates proper CHROMOSOME SEGREGATION and contractile ring function during CYTOKINESIS.
An aurora kinase that localizes to the CENTROSOME during MITOSIS and is involved in centrosome regulation and formation of the MITOTIC SPINDLE. Aurora A overexpression in many malignant tumor types suggests that it may be directly involved in NEOPLASTIC CELL TRANSFORMATION.
Sequential operating programs and data which instruct the functioning of a digital computer.

Role of the scavenger receptor MARCO in alveolar macrophage binding of unopsonized environmental particles. (1/331)

Alveolar macrophages (AMs) avidly bind and ingest unopsonized environmental particles and bacteria through scavenger-type receptors (SRs). AMs from mice with a genetic deletion of the major macrophage SR (types AI and AII; SR-/-) showed no decrease in particle binding compared with SR+/+ mice, suggesting that other SRs are involved. To identify these receptors, we generated a monoclonal antibody (mAb), PAL-1, that inhibits hamster AM binding of unopsonized particles (TiO2, Fe2O3, and latex beads; 66 +/- 5, 77 +/- 2, and 85 +/- 2% inhibition, respectively, measured by flow cytometry). This antibody identifies a protein of approximately 70 kD on the AM surface (immunoprecipitation) that is expressed by AMs and other macrophages in situ. A cDNA clone encoding the mAb PAL-1-reactive protein isolated by means of COS cell expression was found to be 84 and 77% homologous to mouse and human scavenger receptor MARCO mRNA, respectively. Transfection of COS cells with MARCO cDNA conferred mAb-inhibitable TiO2 binding. Hamster MARCO also mediates AM binding of unopsonized bacteria (67 +/- 5 and 47 +/- 4% inhibition of Escherichia coli and Staphylococcus aureus binding by mAb PAL-1). A polyclonal antibody to human MARCO identified the expected approximately 70-kD band on Western blots of lysates of normal bronchoalveolar lavage (BAL) cells (>90% AMs) and showed strong immunolabeling of human AMs in BAL cytocentrifuge preparations and within lung tissue specimens. In normal mouse AMs, the anti-MARCO mAb ED31 also showed immunoreactivity and inhibited binding of unopsonized particles (e.g., TiO2 approximately 40%) and bacteria. The novel function of binding unopsonized environmental dusts and pathogens suggests an important role for MARCO in the lungs' response to inhaled particles.  (+info)

Occupational exposure to dust in quartz manufacturing industry. (2/331)

Owing to the abundance of a sedimentary rock, 65 small-scale quartz manufacturing enterprises, employing 650 workers, have been established in the region studied. Quartz powder manufacturing involves various processes and operations, such as manual handling of quartz stones, crushing, grinding, sieving, screening, mixing, storing and bagging. Results demonstrate that each of these operations generates high concentrations of airborne 'total' dust and respirable dust, which contain a very high percentage (> 75%) free silica. The estimated average exposure to airborne 'total' dust was 22.5 mg m-3 (Permissible Limit of Exposure 1.08 mg m-3), and respirable dust 2.93 mg m-3 (PLE 0.36 mg m-3). This shows that 'total' dust exposure was 7.7 times higher than respirable dust. Since the present work systems and practices may pose a serious health risk to the workers, public and the environment, suitable preventive and control measures have been suggested for improvement in the workplace.  (+info)

Risks of respiratory disease in the heavy clay industry. (3/331)

OBJECTIVES: Little information is available on the quantitative risks of respiratory disease from quartz in airborne dust in the heavy clay industry. Available evidence suggested that these risks might be low, possibly because of the presence in the dust of other minerals, such as illite and kaolinite, which may reduce the harmful effects of quartz. The aims of the present cross sectional study were to determine among workers in the industry (a) their current and cumulative exposures to respirable mixed dust and quartz; (b) the frequencies of chest radiographic abnormalities and respiratory symptoms; (c) the relations between cumulative exposure to respirable dust and quartz, and risks of radiographic abnormality and respiratory symptoms. METHODS: Factories were chosen where the type of process had changed as little as possible during recent decades. 18 were selected in England and Scotland, ranging in size from 35 to 582 employees, representing all the main types of raw material, end product, kilns, and processes in the manufacture of bricks, pipes, and tiles but excluding refractory products. Weights of respirable dust and quartz in more than 1400 personal dust samples, and site histories, were used to derive occupational groups characterised by their levels of exposure to dust and quartz. Full size chest radiographs, respiratory symptoms, smoking, and occupational history questionnaires were administered to current workers at each factory. Exposure-response relations were examined for radiographic abnormalities (dust and quartz) and respiratory symptoms (dust only). RESULTS: Respirable dust and quartz concentrations ranged from means of 0.4 and 0.04 mg.m-3 for non-process workers to 10.0 and 0.62 mg.m-3 for kiln demolition workers respectively. Although 97% of all quartz concentrations were below the maximum exposure limit of 0.4 mg.m-3, 10% were greater than this among the groups of workers exposed to most dust. Cumulative exposure calculations for dust and quartz took account of changes of occupational group, factory, and kiln type at study and non-study sites. Because of the importance of changes of kiln type additional weighting factors were applied to concentrations of dust and quartz during previous employment at factories that used certain types of kiln. 85% (1934 employees) of the identified workforce attended the medical surveys. The frequency of small opacities in the chest radiograph, category > or = 1/0, was 1.4% (median reading) and seven of these 25 men had category > or = 2/1. Chronic bronchitis was reported by 14.2% of the workforce and breathlessness, when walking with someone of their own age, by 4.4%. Risks of having category > or = 0/1 small opacities differed by site and were also influenced by age, smoking, and lifetime cumulative exposure to respirable dust and quartz. Although exposures to dust and to quartz were highly correlated, the evidence suggested that radiological abnormality was associated with quartz rather than dust. A doubling of cumulative quartz exposure increased the risk of having category > or = 0/1 by a factor of 1.33. Both chronic bronchitis and breathlessness were significantly related to dust exposure. CONCLUSIONS: Although most quartz concentrations at the time of this study were currently below regulatory limits in the heavy clay industry, high exposures regularly occurred in specific processes and occasionally among most occupational groups. However, there are small risks of pneumoconiosis and respiratory symptoms in the industry, although frequency of pneumoconiosis is low in comparison to other quartz exposed workers.  (+info)

Selection of ganglioside GM1-binding peptides by using a phage library. (4/331)

Ganglioside Gal beta1 --> 3GalNAc beta1 --> 4(NeuAc alpha2 --> 3) Gal beta1 --> 4Glc beta1 -->1'Cer (GM1)-binding peptides were obtained from a phage-displayed pentadecapeptide library by an affinity selection. The selection processes were in situ-monitored by a quartz-crystal microbalance method, on which a ganglioside GM1 monolayer was transferred. After five rounds of biopanning, the DNA sequencing of 18 selected phages showed that only three individual clones were selected. The peptide sequences of the random region were found to be DFRRLPGAFWQLRQP, GWWYKGRARPVSAVA and VWRLLAPPFSNRLLP. Binding constants of these phage clones to the GM1 monolayer were 10(10) M(-1). Three synthetic pentadecapeptides inhibited the binding of cholera toxin B subunit to the GM1 monolayer with an IC50 of 24, 13 and 1.0 microM, respectively. These peptides will be useful for searching functional roles of ganglioside GMI.  (+info)

Effect of ionic strength on initial interactions of Escherichia coli with surfaces, studied on-line by a novel quartz crystal microbalance technique. (5/331)

A novel quartz crystal microbalance (QCM) technique was used to study the adhesion of nonfimbriated and fimbriated Escherichia coli mutant strains to hydrophilic and hydrophobic surfaces at different ionic strengths. This technique enabled us to measure both frequency shifts (Deltaf), i.e., the increase in mass on the surface, and dissipation shifts (DeltaD), i.e., the viscoelastic energy losses on the surface. Changes in the parameters measured by the extended QCM technique reflect the dynamic character of the adhesion process. We were able to show clear differences in the viscoelastic behavior of fimbriated and nonfimbriated cells attached to surfaces. The interactions between bacterial cells and quartz crystal surfaces at various ionic strengths followed different trends, depending on the cell surface structures in direct contact with the surface. While Deltaf and DeltaD per attached cell increased for nonfimbriated cells with increasing ionic strengths (particularly on hydrophobic surfaces), the adhesion of the fimbriated strain caused only low-level frequency and dissipation shifts on both kinds of surfaces at all ionic strengths tested. We propose that nonfimbriated cells may get better contact with increasing ionic strengths due to an increased area of contact between the cell and the surface, whereas fimbriated cells seem to have a flexible contact with the surface at all ionic strengths tested. The area of contact between fimbriated cells and the surface does not increase with increasing ionic strengths, but on hydrophobic surfaces each contact point seems to contribute relatively more to the total energy loss. Independent of ionic strength, attached cells undergo time-dependent interactions with the surface leading to increased contact area and viscoelastic losses per cell, which may be due to the establishment of a more intimate contact between the cell and the surface. Hence, the extended QCM technique provides new qualitative information about the direct contact of bacterial cells to surfaces and the adhesion mechanisms involved.  (+info)

Polymer-cushioned bilayers. I. A structural study of various preparation methods using neutron reflectometry. (6/331)

This neutron reflectometry study evaluates the structures resulting from different methods of preparing polymer-cushioned lipid bilayers. Four different techniques to deposit a dimyristoylphosphatidylcholine (DMPC) bilayer onto a polyethylenimine (PEI)-coated quartz substrate were examined: 1) vesicle adsorption onto a previously dried polymer layer; 2) vesicle adsorption onto a bare substrate, followed by polymer adsorption; and 3, 4) Langmuir-Blodgett vertical deposition of a lipid monolayer spread over a polymer-containing subphase to form a polymer-supported lipid monolayer, followed by formation of the outer lipid monolayer by either 3) horizontal deposition of the lipid monolayer or 4) vesicle adsorption. We show that the initial conditions of the polymer layer are a critical factor for the successful formation of our desired structure, i.e., a continuous bilayer atop a hydrated PEI layer. Our desired structure was found for all methods investigated except the horizontal deposition. The interaction forces between these polymer-supported bilayers are investigated in a separate paper (Wong, J. Y., C. K. Park, M. Seitz, and J. Israelachvili. 1999. Biophys. J. 77:1458-1468), which indicate that the presence of the polymer cushion significantly alters the interaction potential. These polymer-supported bilayers could serve as model systems for the study of transmembrane proteins under conditions more closely mimicking real cellular membrane environments.  (+info)

In vitro and in vivo tests for determination of the pathogenicity of quartz, diatomaceous earth, mordenite and clinoptilolite. (7/331)

The effects of samples of crystalline quartz, diatomaceous earth, mordenite and clinoptilolite were investigated in vitro (as concerns erythrocyte haemolysis and lactate dehydrogenase (LDH) release from peritoneal macrophages) and in vivo (on LDH, protein and phospholipids in rat bronchoalveolar lavage (BAL), and phospholipids in rat lung tissue). The respirable mineral samples were instilled intratracheally. Determinations in the BAL were carried out after 15, 60 and 180 days, and in the lung tissue after 90, 180 and 360 days. Quartz DQ and quartz FQ induced acute, subacute and chronic inflammation and progressive fibrosis. However, due to the Al2O3 contamination on the surface of the particles quartz FQ caused a delayed response in vivo. Diatomaceous earth produced acute/subacute inflammation that gradually became more moderate after 60 days. Clinoptilolite was inert, whereas the other zeolite sample, mordenite, was cytotoxic in vivo. The reason for this was presumably the needle and rod-shaped particles in the mordenite samples. The investigation revealed that different in vitro and in vivo methods canprovide valuable data concerning the pulmonary toxicity of minerals.  (+info)

Induction of superoxide in glioma cell line U87 stimulated with lipopolysaccharide and interferon-gamma: ESR using a new flow-type quartz cell. (8/331)

The production of superoxide and nitric oxide induced in U87 glioma treated with lipopolysaccharide (LPS) and interferon-gamma (IFN-gamma) was examined by electron spin resonance (ESR) spectroscopy using a newly designed flow-type quartz cuvette without detaching cells from the culture plate. ESR spectra of 2,2,6, 6-tetramethyl-4-hydroxy-1-piperidinyloxy (TEMPOL) with U87 cells on a quartz culture plate were measured at 15 min intervals. The signal intensity of TEMPOL decreased in the presence of U87 cells at the pseudo-first order rate. The signal decay was accelerated in the U87 cells treated with LPS/IFN-gamma for 24 h, and was suppressed in the presence of superoxide dismutase and catalase. By the spin-trapping method, nitric oxide from U87 cells pretreated with LPS/IFN-gamma for 24 h was measured by the ESR, but only a weak signal of nitric oxide adducts was detected. Further, the nitrite and nitrate levels in the medium did not increase for 24 h. By the ESR measurement of cells on culture plates without detachment stress, it was found that the production of superoxide was induced by LPS/IFN-gamma, but that of nitric oxide was not, in U87 glioma cells.  (+info)

TY - JOUR. T1 - Direct monitoring of EcoRII restriction enzyme reactions on a 27 MHz quartz-crystal microbalance.. AU - Takahashi, Shuntaro. AU - Matsuno, Hisao. AU - Furusawa, Hiroyuki. AU - Okahata, Yoshio. PY - 2002. Y1 - 2002. N2 - EcoRII is a type IIe restriction endonuclease characterized by a highly cooperative reaction mechanism that depends on simultaneous binding of the dimeric enzyme molecule to two copies of its recognition site. Gaining insights about reaction property of EcoRII binding to its recognition site and effect of divalent metal ion on DNA cleavage process, a DNA-immobilized quartz crystal microbalance (QCM), which enables real-time monitoring both the binding of enzyme and the cleavage reaction on DNA strands as mass changes, was utilized.. AB - EcoRII is a type IIe restriction endonuclease characterized by a highly cooperative reaction mechanism that depends on simultaneous binding of the dimeric enzyme molecule to two copies of its recognition site. Gaining insights ...
Background Biosensor-based detection provides a rapid and low-cost alternative to conventional analytical methods for revealing the presence of the contaminants in water as well as solid matrices. Although important to be detected, small analytes (few hundreds of Daltons) are an issue in biosensing since the signal they induce in the transducer, and specifically in a Quartz-Crystal Microbalance, is undetectable. A pesticide like parathion (M = 292 Da) is a typical example of contaminant for which a signal amplification procedure is desirable. Methods/Findings The ballasting of the analyte by gold nanoparticles has been already applied to heavy target as proteins or bacteria to improve the limit of detection. In this paper, we extend the application of such a method to small analytes by showing that once the working surface of a Quartz-Crystal Microbalance (QCM) has been properly functionalized, a limit of detection lower than 1 ppb is reached for parathion. The effective surface functionalization is
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The formation of sticky layers on bed particles has been considered as a prerequisite for bed agglomeration in fluidized bed combustion and gasification of woody fuels. In addition, the layer formed makes the bed particle less resistant against fragmentation. The fragments from quartz particles can result in deposition. The present investigation was undertaken to determine the layer formation process on quartz bed particles during combustion of wood-derived fuels and to determine the effect of quartz particle layers on deposit build-up in full-scale dual fluidized bed (olivine) steam gasification of logging residues. Bed material samples were collected from three different combustion appliances: bench-scale bubbling fluidized bed, full-scale bubbling fluidized bed and full-scale circulating fluidized bed. These were collected at different sampling times from start-up with fresh bed material. In addition, samples of deposits, bed material, coarse ash, fine ash, and fly coke from a dual fluidized ...
When it comes to our quartz ring collection, to say we have variety is an understatement. Scores of spectacular quartz ring designs present every shape, color, cut, precious metal and style you can imagine in a quartz ring. If youve got a special occasion coming up... a special person to shop for... or just a thing for bling-the Ross-Simons quartz ring collection is the place to browse.. Go flashy with a quartz cocktail ring! Our quartz ring designers offer dozens of looks in this fun category, taking beautiful advantage of the many colors of quartz. Rich, smoldering, smoky quartz rings are very hot today. In one of our best-selling sterling silver quartz rings, yellow citrine rounds and red garnets create a dramatic ring of fire around an almost-5-carat smoky quartz center.. Gold quartz rings are equally popular. Dazzle someone special with the warm glow of a smoky quartz ring in 14kt yellow gold… Or break out the sunglasses for an intensely bright lime quartz ring in 18kt white gold. ...
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Quartz}} [[Image:DSC01083.JPG,left,thumb,250px,Quartz crystal cluster specimen ,br /> Sinai, Egypt]],br clear=left /> Quartz is a common variety of silicon dioxide that often crystallizes into well-formed hexagonal prisms. It occurs in many colors, including purple [[amethyst]], yellow [[citrine]], and a smoky variety, referred to as [[Smokey Quartz,smoky quartz]] or [[cairngorm]]. Colorless, transparent quartz crystals represent the modern concept of crystal. Crystal balls with a truly mystic significance are always made from quartz. Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical powers to quartz crystals.,br>The Japanese considered it the perfect jewel, symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and fed them with deer blood. Crystal balls, credited with the ability to cure diseases, were ...
This mesmerizing soft pink rose quartz ball is seated delicately on top of a wooden stand. Rose Quartz is one of the most desirable of all quartz and is highly valued for the harmonious soft vibes it radiates; rose quartz is a powerful love energizer and is associated with love, romance, and relationships. The rose quartz spheres semi-translucent pink color and beautiful swirls makes it an excellent ornament for your home or office.. Rose Quartz Application and Symbolism in Feng Shui Also known as love stone, rose quartz are highly treasured for their soft harmonious vibes, and their use as a powerful love energizer. This rose quartz is a lovely gift because it is a strong symbol of love, and provides calm, delicate inspiration for its owner. The rose quartz is known to speed up processes of finding love, mend emotional wounds, strengthen relationships, and help with comprehension of love.. The rose quartzs delicate vibes make it a popular tool for emotional healing in meditation as well. ...
A method for manufacturing a resonator is presented in the present application. The method includes providing a handle substrate, providing a host substrate, providing a quartz substrate comprising a first surface opposite a second surface, applying interposer film to the first surface of the quartz substrate, bonding the quartz substrate to the handle substrate wherein the interposer film is disposed between the quartz substrate and the handle substrate, thinning the second surface of the quartz substrate, removing a portion of the bonded quartz substrate to expose a portion of the interposer film, bonding the quartz substrate to the host substrate, and removing the handle substrate and the interposer film, thereby releasing the quartz substrate.
Semantic Scholar extracted view of [Histamine, serotonin and kininogen in shock produced by intravenous injection of quartz particles in rats]. by Hubert Antweiler et al.
The Rose Quartz Gemstone is one of the most revered and sought-out jewel in history. Its color, healing powers, myths and legends are fascinating. Its an amazing, beautiful, translucent, silica mineral quartz that is considered a rare earth mineral. Many believe there is a deep, spiritual power and healing energy that comes from the quartz, making this particular stone much more than just another pretty gemstone. It is said that washing the face in water with rose quartz will help fade wrinkles and keep the skin young. It also helps as a rejuvenator to the skin. This magical line of products contains rose quartz powder which creates a natural, repeated vibration when applied onto the skin giving your skin a continuous natural skin massage due to the natural properties of the rose quartz. This natural occurring massage allows your skin to work and helps to enhance your skin cells natural renewal process.. 24H Quartz Gem Lifting Serum. This lifting, firming and re-modeling serum is the jewel of ...
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Quartz is a common variety of silicon dioxide that often crystallizes into well-formed hexagonal prisms. It occurs in many colors, including purple amethyst, yellow citrine, and a smoky variety, referred to as smoky quartz or cairngorm. Colorless, transparent quartz crystals represent the modern concept of crystal. Crystal balls with a truly mystic significance are always made from quartz. Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical powers to quartz crystals ...
Sphericity has been determined on quartz grains from beach sediments of northern New Jersey to determine its variation with size and genetic quartz type in a beach environment. Within the size range studied, -5phi to +4phi , sphericities increased from a minimum of 0.59 at -4.5phi (22 mm.) to a maximum of 0.85 at +0.9phi (0.55 mm.), and then decreased again to 0.76 at +3.4phi (0.10 mm.). It appears certain that both size, as such, and genetic quartz type, influence sphericity values, but their relative importance is uncertain. The size range in which the control of quartz type on sphericity appears best developed and most noticeable is between -1.5phi and +1.0phi . In coarser grains, either sphericity when released from the parent rock, or mode of abrasion, seems to assume greatest importance. Coarser sizes consist very largely of vein quartz, which may have an inherently low sphericity. In finer sizes sphericity decreases, apparently independently of quartz type. Comparison with river pebbles ...
This thesis is about thermal etching of quartz single crystals with boron oxide melt and thermal etchings on inorganic polymeric single crystals of orthosilicates, willemite (Zn2SiO4) and phenakite (Be2SiO4), where isolated [SiO4] groups are polymerized by corner-sharing with other tetrahedral groups, such as [ZnO4] and [BeO4]. On the thermal etching of quartz, experiments were performed on quartz (10 0), (0001), (10 1) and (11 1) from 500¢J to 700¢J. Three types of etch figures were recognized by scanning electron microscopy: isolated dislocation etch pit, aligned etch pits and flat etch pits. The effects of defect specification and £\-£] displacive phase transformation of quartz on its development of thermal etch figures were evaluated. By doing so, boron oxide melt was proved to be a useful etchant on the studies of defect types and dynamics of quartz. As for the thermal etching of phenakite type silicate, we conducted thermal-cycle etching of willemite at 1250¢J, hydrochloric and ...
The unique soft pink color of rose quartz is thought to derive from tiny traces of titanium impurities. Buy rose quartz gems online at GemSelect Quartzite (from German: Quarzit) is ... are due to other mineral impurities. When sandstone is cemented to quartzite, the individual quartz grains recrystallize along ... source mineral bauxite in malaysia. source mineral bauxite in malaysia is one of the products of our company main products ... which countries purchase quartz mineral; Purchase Crystals at Retail & Wholesale Prices. ... Natural Crystals & Minerals ; Quartz Crystals; Tumbled Stones & Gemstones; Other / Accessories; On Sale; All; Nov 18, 2007 · Best Answer: For your area, Arkansas is the best bet. The Mt. Ida area is THE place for quartz. There are several places where you can take your bucket and ...
A major barrier to the systematic improvement of biomimetic peptide-mediated strategies for the controlled growth of inorganic nanomaterials in environmentally benign conditions lies in the lack of clear conceptual connections between the sequence of the peptide and its surface binding affinity, with binding being facilitated by noncovalent interactions. Peptide conformation, both in the adsorbed and in the nonadsorbed state, is the key relationship that connects peptide-materials binding with peptide sequence. Here, we combine experimental peptide-titania binding characterization with state-of-the-art conformational sampling via molecular simulations to elucidate these structure/binding relationships for two very different titania-binding peptide sequences. The two sequences (Ti-1, QPYLFATDSLIK; Ti-2, GHTHYHAVRTQT) differ in their overall hydropathy, yet via quartz-crystal microbalance measurements and predictions from molecular simulations, we show these sequences both support very similar, ...
Researchers and professionals will find a hands-on guide to successful experiments and applications of modern electroanalytical techniques here. The new edition has been completely revised and extended by a chapter on quartz-crystal microbalances. The book is written for chemists, biochemists, … Continue reading →. ...
Researchers and professionals will find a hands-on guide to successful experiments and applications of modern electroanalytical techniques here. The new edition has been completely revised and extended by a chapter on quartz-crystal microbalances. The book is written for chemists, biochemists, … Continue reading →. ...
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Results of a numerical modeling study of quartz dissolution and precipitation in a sub-seafloor hydrothermal system have been used to predict where in the system quartz could be deposited and potentially trap fluid inclusions. The spatial distribution of zones of quartz dissolution and precipitation is complex, owing to the fact that quartz solubility depends on many inter-related factors, including temperature, fluid salinity and fluid immiscibility, and is further complicated by the fact that quartz exhibits both prograde and retrograde solubility behavior, depending on the fluid temperature and salinity. Using the PVTX properties of H2O-NaCl, the petrographic and microthermometric properties of fluid inclusions trapped at various locations within the hydrothermal system have been predicted. Vapor-rich inclusions are trapped as a result of the retrograde temperature-dependence of quartz solubility as the convecting fluid is heated in the vicinity of the magmatic heat source. Coexisting ...
Crystalline silica is the scientific name for a group of minerals composed of silicon and oxygen. The term crystalline refers to the fact that the oxygen and silicon atoms are arranged in a threedimensional repeating pattern. This group of minerals has shaped human history since the beginning of civilization. From the sand used for making glass to the piezoelectric quartz crystals used in advanced communication systems, crystalline silica has been a part of our technological development. Crystalline silicas pervasiveness in our technology is matched only by its abundance in nature. Its found in samples from every geologic era and from every location around the globe. Scientists have known for decades that prolonged and excessive exposure to crystalline silica dust in mining environments can cause silicosis, a noncancerous lung disease. During the 1980s, studies were conducted that suggested that crystalline silica also was a carcinogen. As a result of these findings, crystalline...
TY - JOUR. T1 - Triplet states at an O vacancy in alpha-quartz. AU - Lægsgaard, Jesper. N1 - Copyright (2002) American Physical Society. PY - 2002. Y1 - 2002. N2 - The energy landscape of an alpha-quartz O vacancy in the lowest triplet state is investigated. Four local minima are identified and geometries, total energies, and electron paramagnetic resonance (EPR) parameters are obtained. On the basis of calculated values for the magnetic dipole interaction between the electrons two of the structures are identified with known triplet centers detected by EPR. The effect of Ge substitution is studied, and it is concluded that Ge impurities in silica act as traps for dangling bonds with a trapping energy of similar to1.5 eV relative to Si ions.. AB - The energy landscape of an alpha-quartz O vacancy in the lowest triplet state is investigated. Four local minima are identified and geometries, total energies, and electron paramagnetic resonance (EPR) parameters are obtained. On the basis of ...
A quartz crystal that exhibits a tangerine color. This form of quartz contains all the usual properties of clear quartz along with many additional properties provided by the mineral content which provides the tangerine color to the crystal. It promotes inner self evaluation and evolution. It brings the strength and loving essence to continue in any and all pursuits. It allows one to re-trace any negative energies which attempt to penetrate ones protective shileld. It stimulates the Sacral chakra and enhances creativity. It dispels isolation and disconnectedness and abates unwarrented fears. The energy of the crystal brings to one the tendency to feel less vulnerable, more dispassionate, and calm when dealing with the actual path for change. Tangerine quartz has been used in the treatment of disorders related to the reproductive system. It has been used in the treatment of weight loss. It is said to provide for an increased T- cell count in AIDS patients.
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Two varieties of quartz are commonly called rose quartz. 1. One is found in translucent masses made of intergrown anhedral crystals. It occurs in different hues of pink, sometimes blueish, sometimes more reddish; irradiation may cause the formation of smoky quartz color centers and add a gray tone. Rose quartz is always showing a hazy to translucent character due to microscopic fibrous inclusions of a pink borosilicate mineral related to dumortierite (Applin and Hicks, 1987; Goreva et al, 2001; Ma et al, 2002), which group leader Rossman names dididumortierite (Nadin, 2007). These inclusions are probably the result of an exsolution from an initially homogeneous material. The color of the fibrous mineral as well as the color of rose quartz is stable up to temperatures of about 575°C (Lehmann and Bambauer, 1978; Goreva et al, 2001) and is also generally stable in ultraviolet light (Goreva et al, 2001), although there have
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The reason for a variety of different quartz colors and shapes is because different crystals bond with other elements in the Earth. Quartz is comprised of Silicon Dioxide, SiO2, the Earths most common compound. Different color quartz comes from these compounds binding with other elements. For instance, yellow and brownish quartz is that color because of impurities from Iron, while red and pink quartz are stained with magnesium, phosphate or aluminum imperfections.. ...
Quarz (help·info),[30] which is of Slavic origin (Czech miners called it křemen). Other sources attribute the words origin to the Saxon word Querkluftertz, meaning cross-vein ore.[31] Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology. It is found regularly in passage tomb cemeteries in Europe in a burial context, such as Newgrange or Carrowmore in Ireland. The Irish word for quartz is grianchloch, which means sunstone. Quartz was also used in Prehistoric Ireland, as well as many other countries, for stone tools; both vein quartz and rock crystal were knapped as part of the lithic technology of the prehistoric peoples.[32] While jade has been since earliest times the most prized semi-precious stone for carving in East Asia and Pre-Columbian America, in Europe and the Middle East the different varieties of quartz were the most commonly used for the various types of jewelry and hardstone carving, including engraved gems and cameo ...
Quarz (help·info),[30] which is of Slavic origin (Czech miners called it křemen). Other sources attribute the words origin to the Saxon word Querkluftertz, meaning cross-vein ore.[31]. Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology. It is found regularly in passage tomb cemeteries in Europe in a burial context, such as Newgrange or Carrowmore in Ireland. The Irish word for quartz is grianchloch, which means sunstone. Quartz was also used in Prehistoric Ireland, as well as many other countries, for stone tools; both vein quartz and rock crystal were knapped as part of the lithic technology of the prehistoric peoples.[32]. While jade has been since earliest times the most prized semi-precious stone for carving in East Asia and Pre-Columbian America, in Europe and the Middle East the different varieties of quartz were the most commonly used for the various types of jewelry and hardstone carving, including engraved gems and cameo ...
ROSE QUARTZ COLLECTION Bergamot Rose Magnesium Oil Roll On with Essential Oils + ROSE QUARTZ Rollerball. Magnesium Oil will help you relax, stress less, calm, and sleep when you need it. Use in your daily self care routine, as a naturally relaxing fragrance. Rose Quartz is known as the LOVE stone, the stone of the HEART CHAKRA. *Please note: rose quartz is a natural stone, color may vary. Certified Cruelty Free and Vegan by PETA Made with Organic + Ethical Ingredients 10 mL Glass Roll On with Rose Quartz Roller Ball
Clear Quartz Penetrator Mini-Towers Extra (Brazil) - These Extra grade cut and polished Clear Quartz Penetrator Mini-Towers from Brazil sparkle and shine. These Clear Quartz pieces are so clear some might mistake them for glass (but we guarantee theyre really quartz!).
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Milky White Quartz Undrilled Yoni Egg- is a stone that brings good fortune. It is also a calming and soothing stone. Milky White quartz is helpful for meditation, and looking within.It also has all the properties of clear quartz yet to a gentler degree. It can be considered a very yin, feminine type of quartz.Milky White quartz is often used for purification on spiritual and other levels.Physically, it is said to be particularly beneficial for the immune system. These are very easy to clean.  Size 22MM Wide 30MM Long
The effect of freshly fractured quartz produced in sandblasting, rock drilling, tunneling, and silica flour milling operations on enhanced acute lung injury in rats was investigated. Three study groups of 20 male Fischer-344-rats were exposed to freshly fractured quartz (14808607) dust, aged quartz dust (for 60 days), or fresh air for 5 hours a day for 10 days. The mean quartz dust concentration i
Signed-off-by: Zebediah Figura ,z.figura12 at gmail.com, --- dlls/quartz/tests/vmr9.c , 116 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) diff --git a/dlls/quartz/tests/vmr9.c b/dlls/quartz/tests/vmr9.c index 656f943ca35..2416d2c0d19 100644 --- a/dlls/quartz/tests/vmr9.c +++ b/dlls/quartz/tests/vmr9.c @@ -3729,6 +3729,121 @@ out: ok(!ref, Got outstanding refcount %d.\n, ref); } +static void test_windowless_size(void) +{ + VIDEOINFOHEADER vih = + { + .bmiHeader.biSize = sizeof(BITMAPINFOHEADER), + .bmiHeader.biWidth = 32, + .bmiHeader.biHeight = 16, + .bmiHeader.biBitCount = 32, + .bmiHeader.biPlanes = 1, + }; + AM_MEDIA_TYPE mt = + { + .majortype = MEDIATYPE_Video, + .subtype = MEDIASUBTYPE_RGB32, + .formattype = FORMAT_VideoInfo, + .cbFormat = sizeof(vih), + .pbFormat = (BYTE *)&vih, + }; + IBaseFilter *filter = create_vmr9(VMR9Mode_Windowless); + LONG width, height, aspect_width, aspect_height; + IVMRWindowlessControl9 *windowless_control; + IFilterGraph2 *graph = ...
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Aura cluster rainbow quartz (1) [M25287] - rainbow Aura crystal quartz cluster with titanium and gold, 9.9 gr - mm 64 x 16 x 6, only a piece, as in pictures. Also available druses and geodes of Aura rainbow quartz at this link. The rainbow Aura borns from the bond of pure quartz with gold and titanium and are
Quartz with a hardness of seven exceeds the drilling capability of standard metal drill bits. Beyond dulling a metal drill bit rapidly, the heat generated by friction can crack the quartz crystal. To drill a hole in quartz, you need a drill bit that uses a material harder than quartz.
The U.S. Bureau of Mines conducted a series of laboratory tests in a full-scale model to determine the respirable quartz dust capture efficiency of an irrigated-filter collection system while testing different filter densities, different filter materials, preconditioning water sprays, and wetting additives in the spray water. Impactor samplers were operated upstream and downstream of the filter unit to determine overall dust collection efficiency. The impactor filters containing the 0.7- to 4.7-Um size fractions were analyzed for quartz content, and these data were used to calculate quartz dust collection efficiency. The results of this testing indicated that (1) increased filter density improved quartz dust collection, but also resulted in a significant increase in pressure drop across the filter, (2) an alternate synthetic filter material improved dust collection without increasing pressure drop, (3) preconditioning sprays mounted in the system ductwork can have a beneficial effect on dust ...
Poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC) chains were grown from near-monodisperse 13 µm diameter quartz fibres using surface-initiated atom transfer radical polymerisation (ATRP) at ambient temperature in 1 : 1 methanol-water at 20 °C. A covalently-bound siloxane-based ATRP initiator provided
The quartz crystal microbalance (QCM) technique refers to a bioanalytical approach capable of monitoring adsorption reactions at the solid-liquid interface with the help of thumbnail‐sized piezoelectric quartz crystals that perform resonant shear oscillations of nanometre amplitude
An in-line device for measuring the water content in ethanol was developed using a polyvinyl alcohol (PVA)-coated quartz crystal microbalance. Bio-ethanol is widely used as the replacement of gasoline, and its water content is a key component of its specifications. When the PVA-coated quartz crystal microbalance is contacted with ethanol containing a small amount of water, the water is absorbed into the PVA increasing the load on the microbalance surface to cause a frequency drop. The determination performance of the PVA-coated microbalance is examined by measuring the frequency decreases in ethanol containing 2% to 10% water while the ethanol flows through the measurement device. The measurements indicates that the higher water content is the more the frequency reduction is, though some deviation in the measurements is observed. This indicates that the frequency measurement of an unknown concentration of water in ethanol can be used to determine the water content in ethanol. The PVA coating is examined
TY - JOUR. T1 - Antibody immobilization on functional monolayers using a quartz crystal microbalance. AU - Aizawa, Hidenobu. AU - Gokita, Yasutoshi. AU - Park, Jong Won. AU - Yoshimi, Yasuo. AU - Kurosawa, Shigeru. PY - 2006/10. Y1 - 2006/10. N2 - This paper evaluated immobilization of anti-C-reactive protein (CRP) monoclonal antibody on a quartz crystal microbalance (QCM) when 2-aminoethanethiol (AET), 4,4-dithiodibutyric acid (DDA), and 11-mercaptoundecanoic acid (MUA) were deposited on the gold surface of QCM. In all monolayers, anti-CRP antibodies were immobilized such as Langmuir types because it had been introduced with a corresponding active group. According to the Langmuir isotherm equation amax, the maximum immobilized amounts of anti-CRP antibody were 4.27, 2.72, and 3.74 pmol/cm2, respectively. Although the immobilized amount of anti-CRP antibody was highest on the AET monolayer, the amount of antigen-antibody binding between the anti-CRP antibody and the CRP was highest on the MUA ...
Two quartz crystal microbalance oligonucleotide biosensors of a toxic microalga gene sequence (Alexandrium Minutum) have been designed. Grafting on a gold surface of 20-base thiol- or biotin-labeled probe, and selective hybridization with the complementary 20-base target, have been monitored in situ with a 27 MHz quartz crystal microbalance under controlled hydrodynamic conditions. The frequency of the set up is stable to within a few hertz, corresponding to the nanogram scale, for three hour experiments. DNA recognition by the two biosensors is efficient and selective. Hybridization kinetic curves indicate that the biosensor designed with the thiol-labeled probe is more sensitive, and that the biosensor designed with the biotin-labeled probe has a shorter time response and a higher hybridization efficiency.
TY - GEN. T1 - SAMS and protein adsorption studies for the calibration of miniaturized quartz crystal microbalance arrays. AU - Kao, Ping. AU - Goyal, Abhijat. AU - Allara, David. AU - Tadigadapa, Srinivas A.. PY - 2007/12/1. Y1 - 2007/12/1. N2 - We report the design and fabrication of a micromachined quartz crystal balance (QCM) array for self assembled monolayers (SAMs) and protein adsorption studies. The microQCM was fabricated using recently developed inductively coupled plasma etching process for quartz to realize resonators with 60 μm thickness and electrode diameters of 0.5 mm. The reduction in the thickness and lateral pixel size has resulted in a sensitivity improvement by factor of 1364 over a commercially available macro-sized QCM. In both rigid and viscoelastic film adsorption limits, we find the microQCM to exhibit three times greater sensitivity than the predicted value when operated at the third overtone. These results show that the micromachined QCM in array format is a very ...
We are developing methods to quantify antibody interactions that include a quartz crystal microbalance (QCM) system to measure, on a molecular basis, the interaction of p53 and anti-p53 antibodies. Previously, as a model system, we developed a measurement device consisting of p53 protein (human wild type), characterized by mass spectroscopy and immobilized at various concentrations on a glass slide. The device is designed as a control to be used with immunohistochemical (IHC) assays that incorporate commercially available anti-p53 antibodies and probes. In the current study, p53 protein is covalently immobilized on a silicon dioxide-coated quartz crystal and the resonance frequency shift is followed in-situ. The functionalized sensor is then incubated with the anti-p53 antibody, which provides a direct gravimetric measure of the antibody-antigen binding. This previously described method allows the comparison of the surface immobilized protein concentrations with estimates obtained by fluorescence
Aluminum hydroxide (AH) salts are the most widely used adjuvants in vaccine formulation. They trigger immunogenicity from antigenic subunits that would otherwise suffer from a lack of efficiency. Previous studies focusing on antigen-AH interaction mechanisms, performed with model proteins, suggested that electrostatic interactions and phosphate-hydroxyl ligand exchanges drive protein adsorption on AH. We however recently evidenced that NaCl, used in vaccine formulation, provokes AH particle aggregation. This must be taken into account to interpret data related to protein adsorption on AH. Here, we report on the successful development and use of a stable AH-coated surface to explore the mechanisms of protein adsorption by means of ultrasensitive surface analysis tools. Bovine serum albumin (BSA) adsorption was studied at different pHs and ionic strengths (I) using quartz crystal microbalance. The results show that protein adsorption on the AH adjuvant cannot be explained solely by electrostatic ...
An important virulence mechanism of the malaria parasite Plasmodium falciparum is cytoadhesion, the binding of infected erythrocytes to endothelial cells in the second half of asexual blood stage development. Conventional methods to investigate adhesion of infected erythrocytes are mostly performed under static conditions, many are based on manual or semi-automated read-outs and are, therefore, difficult to standardize. Quartz crystal microbalances (QCM) are sensitive to nanogram-scale changes in mass and biomechanical properties and are increasingly used in biomedical research. Here, the ability of QCM is explored to measure binding of P. falciparum-infected erythrocytes to two receptors: CD36 and chondroitin sulfate A (CSA) under flow conditions. Binding of late stage P. falciparum parasites is measured in comparison to uninfected erythrocytes to CD36- and CSA-coated quartzes by QCM observing frequency shifts. CD36-expressing cell membrane fragments and CSA polysaccharide were coated via poly-l-lysine
An important virulence mechanism of the malaria parasite Plasmodium falciparum is cytoadhesion, the binding of infected erythrocytes to endothelial cells in the second half of asexual blood stage development. Conventional methods to investigate adhesion of infected erythrocytes are mostly performed under static conditions, many are based on manual or semi-automated read-outs and are, therefore, difficult to standardize. Quartz crystal microbalances (QCM) are sensitive to nanogram-scale changes in mass and biomechanical properties and are increasingly used in biomedical research. Here, the ability of QCM is explored to measure binding of P. falciparum-infected erythrocytes to two receptors: CD36 and chondroitin sulfate A (CSA) under flow conditions. Binding of late stage P. falciparum parasites is measured in comparison to uninfected erythrocytes to CD36- and CSA-coated quartzes by QCM observing frequency shifts. CD36-expressing cell membrane fragments and CSA polysaccharide were coated via poly-l-lysine
Quartz crystal microbalance (QCM) is a piezoelectric sensor with multiple application such as antigen-antibody interactions, detection of virus capsids, protein adsorption, and DNA and RNA...
Quartz crystal microbalance (QCM) gas sensor coated with thin molecular recognition membrane using acrylic acid, methacrylic acid or stylene are prepared using plasma-polymerized chemical vapor deposition (CVD)method. The sensor coated with acrylic acid thin film as the molecular recognition membrane exhibits an excellent selectivity and a high sensitivity for ammonia and amine gases. The effect of the functional groups on the sensor characteristics is also investigated.
Membrane-active peptides include peptides that can cross cellular membranes and deliver macromolecular cargo as well as peptides that inhibit bacterial growth. Some of these peptides can act as both transporters and antibacterial agents. It is desirable to combine the knowledge from these two different fields of membrane-active peptides into design of new peptides with tailored actions, as transporters of cargo or as antibacterial substances, targeting specific membranes. We have previously shown that the position of the amino acid tryptophan in the peptide sequence of three arginine-tryptophan peptides affects their uptake and intracellular localization in live mammalian cells, as well as their ability to inhibit bacterial growth. Here, we use quartz crystal microbalance with dissipation monitoring to assess the induced changes caused by binding of the three peptides to supported model membranes composed of POPC, POPC/POPG, POPC/POPG/cholesterol or POPC/lactosyl PE. Our results indicate that the
TY - JOUR. T1 - Development of a real-time glucose biosensor by enzyme immobilization on the quartz crystal microbalance.. AU - Lasky, S. J.. AU - Buttry, Daniel. PY - 1990/2. Y1 - 1990/2. UR - http://www.scopus.com/inward/record.url?scp=0025380012&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0025380012&partnerID=8YFLogxK. M3 - Article. C2 - 1369264. AN - SCOPUS:0025380012. VL - 8. SP - 8. EP - 16. JO - American Biotechnology Laboratory. JF - American Biotechnology Laboratory. SN - 0749-3223. IS - 2. ER - ...
This paper critically evaluates the electrogravimetric curves measured on the thin metal (Fe, Ni, Al and Cu) film electrode/aqueous electrolyte system at our laboratory and elsewhere, to introduce how to apply the principle of electrochemical quartz crystal microbalance technique to the study of such interfacial reactions at electrode/electrolyte as corrosion, passivation and deposition of metals. From the electrogravimetric curve measured on various thin metal film electrode specimens simultaneously with steady state voltammogram, quasi-steady state or transient voltammogram, the interfacial reaction mechanisms of the metals have been proposed ...
Testing of six Midcourse Space Experiment (MSX) satellite thermoelectric quartz crystal microbalances (TQCM) was completed. These will be used to monitor contamination at various locations on the spacecraft. The tests included a 3-week drift test, power on/off tests; temperature cycling of TQCM crystals, mounting base, and flight electronics box; and deposition of carbon dioxide gas. The data obtained will be used for analyzing MSX satellite flight contamination data.
quartz crystal 제조업체 주소록 - EC21에는 세계곳곳에서 등록한 3,000,000개의 quartz crystal 수입업체, 수출업체, 제조업체, 공급업체, 도매업체, 유통업체, 무역회사, 셀러 등이 있습니다. EC21을 통해 쉽게 거래선을 발굴 하세요.
Buy Quartz Stone OQ1019 11 Apr, 2017. Quartz stone is known as Engineered Stone, as quartz stone is made from the natural quartz, about 93%, and little resin and pigment.So, the appearance of the quartz stone looks much more like the natural stone.The vein and color of the quartz stone is much more variety, so, even though the Engineered Stone is young material, but more and more popular in .... ...
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TY - JOUR. T1 - Modification of lignin with laccases for the adsorption of anionic ferulic acid studied by quartz cristall microbalance with dissipation and AFM. AU - Saarinen, Terhi. AU - Suurnäkki, Anna. AU - Österberg, Monika. AU - Laine, Janne. PY - 2009. Y1 - 2009. N2 - The adsorption of laccases and ferulic acid on a lignin substrate has been studied using a quartz crystal microbalance with dissipation (QCM-D) and an atomic force microscope (AFM). Two different additional strategies were applied: ferulic acid was added after laccase pretreatment, or coadsorbed together with laccase. The effect of two laccases isolated from Trametes hirsuta and Melanocarpus albomyces was compared on lignin activation. The QCM-D results were also compared against bulk experiments on chemithermomechanical pulp. The two laccases affected the adsorption of ferulic acid differently. Adsorption of T. hirsuta laccase was not observed, while the adsorption of M. albomyces laccase was obvious. However, both ...
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Detail Label-Free Observation of Molecular Interactions, Surface Layer Systems and Fluid Properties from 3T Analytik. PT. Medquest Jaya Global offers extremely high quality quartz crystal microbalances manufactured by 3T Analytik for bioanalytical studies.. Basic Information:. Quartz Crystal Microbalances (QCM) are highly sensitive instruments for measuring the mass and material properties of deposited molecular layers as well as of wetting liquids on their quartz sensor surfaces. The measuring principle of this technique is based on the precise oscillation of the quartz sensors at their resonant frequency when an alternating voltage is applied.. Depositions at the surface or wetting of the surface result in a frequency shift and, depending on the material properties, also in a damping of the oscillation. Both, the frequency shifts and the damping (dissipation) of the oscillation are captured with the 3T Analytik qCell/qCell T QCM instruments with high resolution and in real-time.. These novel ...
Supereruptions violently transfer huge amounts (100 s-1000 s km3) of magma to the surface in a matter of days and testify to the existence of giant pools of magma at depth. The longevity of these giant magma bodies is of significant scientific and societal interest. Radiometric data on whole rocks, glasses, feldspar and zircon crystals have been used to suggest that the Bishop Tuff giant magma body, which erupted ∼760,000 years ago and created the Long Valley caldera (California), was long-lived (|100,000 years) and evolved rather slowly. In this work, we present four lines of evidence to constrain the timescales of crystallization of the Bishop magma body: (1) quartz residence times based on diffusional relaxation of Ti profiles, (2) quartz residence times based on the kinetics of faceting of melt inclusions, (3) quartz and feldspar crystallization times derived using quartz+feldspar crystal size distributions, and (4) timescales of cooling and crystallization based on thermodynamic and heat flow
As an extremely accurate device, the Quartz Crystal Microbalance (QCM) measures the mass change down to 0.1 nanogram. Any mass loss or delamination of the electrodes on the quartz plate will be detected by the quartz crystal and cause significant measurement errors. As a result, the intrinsic quality of the electrode gold coating and the interfacial integrity of the coating/substrate system play an essential role in performing accurate and repeatable mass measurement. The Micro scratch test is a widely used comparative measurement to evaluate the relative cohesion or adhesion properties of coatings based on comparison of the critical loads at which failures appear. It is a superior tool for reliable quality control of QCMs.. Gold Coating Adhesion on Quartz Crystal Substrate. ...
Pure Quartz Crystal Singing Bowls have a strong, clear resonance, which has become a very effective tool for personal wellness, meditation practices, and healing in the medical and complementary medicine communities. Pure Quartz Crystal Singing Bowls are available in frosted, clear, colored, mineral fusion, and handle bowl styles. Each has different resonant properties, available in many sizes and pitches for various wellness practices and intentions.. You can read more here below, view all of our bowl selections in our Products section, or look at other specific topices in our FAQS section to your left, regarding pitch, size, chakras, how to select, and more. You can also call us for in depth consultations on the best choice for your individual or professional use of the bowls! (See Contact above.). See our article section for more information. Crystal bowls have been used in healing modalities since the 1980s. While some people speculate on the use of crystal singing bowls in ancient ...
These magic crystal wands are natural quartz crystal which have been electroplated with gold. The gold electroformed jewelry is made of environmental material, 24K gold plate over copper, which is lead and nickle free.These pretty little quartz crystal wands measure as follows,
One challenging aspect of quartz crystal microbalance (QCM) measurements is the characterization of adsorbed particles as the change in resonance frequency (Δf) is proportional not only to the inertia of the adsorbed layer but also to that of the hydrodynamically coupled fluid. Herein, by solving numerically
Q-Sense instruments - tracking changes at the surface - are based on the patented QCM-D technique. The instruments measure in real-time the mass of molec...
A combined setup of quartz crystal microbalance and generalized ellipsometry can be used to comprehensively investigate complex functional coatings comprising stimuli-responsive polymer brushes and 3D nanostructures in a dynamic, noninvasive in situ measurement. While the quartz crystal microbalance detects the overall change in areal mass, for instance, during a swelling or adsorption process, the generalized ellipsometry data can be evaluated in terms of a layered model to distinguish between processes occurring within the intercolumnar space or on top of the anisotropic nanocolumns. Silicon films with anisotropic nanocolumnar morphology were prepared by the glancing angle deposition technique and further functionalized by grafting of poly-(acrylic acid) or poly-(N-isopropylacrylamide) chains. Investigations of the thermoresponsive swelling of the poly-(N-isopropylacrylamide) brush on the Si nanocolumns proved the successful preparation of a stimuli-responsive coating. Furthermore, the potential of
Science & Technology, Physical Sciences, Chemistry, Analytical, Chemistry, QCM, biosensor, environmental, pesticides, FARADAIC IMPEDANCE SPECTROSCOPY, 4-AMINOPHENYL ACETATE, CYCLIC VOLTAMMETRY, BIOSENSOR, SENSOR, CHOLINESTERASE, ELECTRODES, ACETYLCHOLINE, INSECTICIDES, INTERFACE ...
Quartz crystal microbalance immunosensor has a capacity to perform a label-free and real time detection of a trace amount of analyte through the specific interaction between antibody and antigen. However, immobilization of antibody molecules on the sensor surface is a troublesome procedure for researchers who are not experienced in chemistry. Protein G has a specific affinity to antibody and would serve as a capturing agent for antibody when immobilized on the sensor surface. In this work, we prepared a protein G sensor chip by immobilizing protein G on the surface of quartz crystal microbalance and examined its capability to detect human haptoglobin or human transferrin with unpurified corresponding antiserum. Specific and dose dependent response was observed when the protein G chip was used for detection of antigens after saturated with antiserum. We also verified several advantageous aspects of the protein G chip such as improved flexibility and sensitivity. ...
Decorating lipid bilayers with oligonucleotides has great potential for both fundamental studies and applications, taking advantage of the membrane properties and the specific Watson-Crick base pairing. Here, we systematically studied the binding of DNA oligonucleotides with the frequently used hydrophobic anchors cholesterol, stearyl, and distearyl to supported lipid bilayers made of dioleoylphosphatidylcholine (DOPC) by quartz crystal microbalance with dissipation monitoring and spectroscopic ellipsometry (SE). All three anchors were found to incorporate well into DOPC lipid membranes, yet only the distearyl-based anchor remained stable in the bilayer when it was rinsed. The unstable anchoring of the cholesterol- and stearyl-based oligonucleotides can, however, be stabilized by hybridization of the oligonucleotides to complementary DNA modified with a second hydrophobic anchor of the same type. In all cases, the incorporation into the lipid bilayer was found to be limited by mass transport, ...
ISBN 13 : 9782011341594. Teverino; [Cora]. Tome 1 / George Sand Date de lA(c)dition originale: 1846 Ce livre est la reproduction fidA]le dune oeuvre publiA(c)e avant 1920 et fait partie dune collection ... ...
Nanobodies are single-domain fragments of camelid antibodies that are emerging as versatile tools in biotechnology. We describe here the interactions of a specific nanobody, NbSyn87, with the monomeric and fibrillar forms of α-synuclein (αSyn), a 140-residue protein whose aggregation is associated with Parkinsons disease. We have characterized these interactions using a range of biophysical techniques, including nuclear magnetic resonance and circular dichroism spectroscopy, isothermal titration calorimetry and quartz crystal microbalance measurements. In addition, we have compared the results with those that we have reported previously for a different nanobody, NbSyn2, also raised against monomeric αSyn. This comparison indicates that NbSyn87 and NbSyn2 bind with nanomolar affinity to distinctive epitopes within the C-terminal domain of soluble αSyn, comprising approximately amino acids 118-131 and 137-140, respectively. The calorimetric and quartz crystal microbalance data indicate that ...
Aalto-yliopisto on suomalaisille vahvuuksille rakentuva kansainvälinen yliopisto. Aalto-yliopistossa tiede ja taide kohtaavat tekniikan ja talouden. ...
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TY - JOUR. T1 - Fluid Inclusion Characteristics of Auriferous Quartz Veins in Archean and Paleoproterozoic Greenstone Belts of Eastern and Southern Finland. AU - Matti, Poutiainen. AU - Sami, Partamies. PY - 2003. Y1 - 2003. N2 - Fluid inclusions in auriferous quartz veins in five deposits in the Archean (2.9-2.7 Ga) and Paleoproterozoic (2.0-1.75 Ga) greenstone belts of eastern and southwestern Finland have been characterized on the basis of their composition, reconstructed isochores, and decrepitation behavior.The dominant fluids associated with gold mineralization are H2O-CO2 ± CH4 ± halite (Archean) and H2O-CO2-CH4 or H2O-CH4 (Paleoproterozoic) in composition; phase ratios were generally uniform H2O/CO2 in the Archean but were variable in the Paleoproterozoic. In the Archean Au ± sulfide quartz veins, the mineralizing fluids contain less CH4 (,30 mol %) and have higher salinities (up to 39 wt % NaCl equiv) than the corresponding fluids in the Paleoproterozoic Au-sulfide-quartz veins (up ...
PRODUCT DETAILS Name: Rainbow angel aura quartz crystal bismuth titanium silicon point Weight:122g Size:109*48*25mmPayment: Please pay by Paypal. Shipping: This item will be shipped by Economy Intl Shipping. Items are shipped within 2 business days of payment. We will check the shipping information. Any other questions, please feel free to contact us, we will always be happy to serve you. thanks! Picture: Pictures of goods, some are in the sun beat, some are under fluorescent light to shoot, I will take a different angle pictures of goods, the most beautiful part of the display of goods, at the same time as close as possible to the goods. Pictures and objects are color difference is inevitable, this is because the crystal material decisions, will be affected by the surrounding environment and light source,background, different light sources will show different color, display color difference is also a cause of color of the existence of commodity.. ...
The NX2016AA series of surface-mount quartz crystals from NDKAmerica are designed for frequency-control applications requiring extremely small size. he crystals measure only 2 x 1.6 x 0.45 mm and operate at fundamental frequencies from 24 to 80 MHz. The ...
This is a Himalayan Life Size Quartz Crystal Skull. Realize expanded realities, explore lucid dreaming, and meditate with this Life Size Crystal Skulls.
Results Miners had increased risk for lung cancer (SIR 1.48 (95% CI 1.22 to 1.78), based on 112 cases during 227 000 person-years). The increased risk could not be explained by exposure to radon or diesel exhaust but was associated with exposure to crystalline silica: SIR 0.96 (0.53 to 1.62), 1.45 (1.10 to 1.87), 1.99 (1.31 to 2.90) and 1.77 (0.92 to 3.10) in groups with exposure to 0, 0-2, 2-5 and ,5 mg years/m3, respectively. Reanalysis of data from the other mine indicated that quartz was a possible confounder in the analysis of relationship between radon and lung cancer. In the highest radon exposed group, the point estimate for the RR decreased from 5.65 to 3.90 when adjusting for concurrent exposure to quartz. ...
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The invention provides a novel silicone-coated, quartz glass-made optical fiber which is very advantageous in the high efficiency of the coating process as well as in the improved workability in the connecting works of the fiber terminals for extension of the communication lines by virtue of the excellent peelability of the coating layer from the surface of the quartz glass fiber even by mere drawing the coated fiber between fingers. The coating layer is formed of a radiation- or UV-cured silicone composition comprising (A-a) an organopolysiloxane having aliphatic unsaturation, e.g. vinyl, and/or (A-b) an organopolysiloxane having mercaptoalkyl groups, e.g. 3-mercaptopropyl groups, and (B) a curing accelerator.
China Fj High Efficent Factory Price Pharmaceutical Hydrothermal Synthesis Agitated Hydrogenation Quartz Reactor, Find details about China Reactor, Pharmaceutical Reactor from Fj High Efficent Factory Price Pharmaceutical Hydrothermal Synthesis Agitated Hydrogenation Quartz Reactor - Wenzhou Onway Machinery Co., Ltd.
Tunnel-type Quartz sand Microwave Drying and Sterilization Equipment are widely used for drying and sterilizing powder, granular, flakes or colloidal form foods, nutritional health Tunnel-type Microwave Drying and Sterilization Equipment products, grain, agricultural and sideline products(rice, cornmeal), bamboo shoot, tea(wild chrysanthemum flower, Tunnel-type Quartz sand Microwave Drying and Sterilization Equipment of broadleaf holly leaf, lotus leaf, green tea, black tea, puer tea), ginseng, mushroom, agaric, Tunnel-type Microwave Drying and Sterilization Equipment ganoderma, vegetables and fruits(spinach, carrot,
Rose Quartz is one of the most known to all, and the most used of crystals. Although it does have a high energy, its vibe is oh; so very calming, and soothing. This lovely mineral permeates on the highest level of all types of Love including self-love. The soothing energy of Rose Quartz resonates to each individual starting from the soft tones in pink, that can melt anyones heart with just gazing upon it. A stone this powerful can help one be conscious and aware of Empathy, reconciliation, and forgiveness of others. Lowering the levels of stress and tension in the heart area. It is especially beneficial when one is explicitly working on the heart chakra. This assists one in the opening of that energy center and reduces stress. Helps to clear out feelings of anger, and jealousy, even resentment of others. Providing the message that there is no need to haste under any circumstances, bringing calmness and clarity to every situation. It helps in restoring the mind back to
Milky quartz[edit]. Milk quartz or milky quartz is the most common variety of crystalline quartz. The white color is caused by ... α-quartz: trigonal β-quartz: hexagonal. Crystal class. α-quartz: trapezohedral (class 3 2); β-quartz: trapezohedral (class 6 2 ... the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz ... Rose quartz[edit]. Rose quartz is a type of quartz which exhibits a pale pink to rose red hue. The color is usually considered ...
Quartz-pebble conglomerate deposits[edit]. Quartz pebble conglomerate hosted uranium deposits are of historical significance as ... Uranium mineralised quartz-hematite breccia is related to Palaeoproterozoic granites with uranium contents of up to 100 ppm. ... Quartz pebble conglomerate hosted uranium deposits formed from the transport and deposition of uraninite in a fluvial ... Quartz pebble conglomerate uranium deposits are typically low grade but characterized by high tonnages. The Huronian deposits ...
"Quartz. Retrieved 26 April 2020.. *^ "How Long Does It Take to Charge an Electric Car?". J.D. Power. Retrieved 26 April 2020.. ...
"Quartz. Retrieved 8 December 2019.. *. ""중증장애인 삶은 늘 코로나 재난" 거리로 나온 장애인들 (Disabled people who have taken to the streets "Life ...
"Quartz. Retrieved 14 January 2014.. *^ "Somali piracy is down 90 per cent from last year". The Journal. 15 December 2013. ...
"Quartz. Retrieved February 7, 2020.. *^ "Giley, Rodriguez, Spread Fame Of Texas Country Music Heritage". Billboard. Nielsen ...
"Quartz. Atlantic Media Inc. Retrieved May 31, 2018.. Nicholas Daniel Hartlep (June 1, 2013). The Model Minority Stereotype: ...
"Quartz. June 27, 2019.. *^ Jones, Carolyn (December 4, 2000). "Amazing Voyage Through Perilous Arctic Ocean / Mounties boat ...
"Quartz. Retrieved December 8, 2015.. *^ Aughinbaugh, Alison; Robles, Omar; Sun, Hugette (2013). "Marriage and divorce: patterns ...
"Quartz. Retrieved 6 January 2017.. *^ Bochenski, Natalie (5 May 2015). "Brisbane developers assist Nepal". Brisbane Times. ...
"Quartz.. *^ a b c "内地总票房_电影历史票房_中国票房". www.cbooo.cn.. ...
"Quartz. Retrieved 2019-07-26.. *^ "AI Principles". Future of Life Institute. Retrieved 2019-07-26.. ...
"Quartz.. *^ "Colony Collapse Disorder Action Plan" (PDF). USDA. 20 June 2007.. *^ "CCD Steering Committee, Colony Collapse ...
"Quartz. Archived from the original on 22 December 2018. Retrieved 22 December 2018.. ...
fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal, peridot, tanzanite, rhodium, jade ...
"Quartz.. *^ Hanke, S. H., & Boland, J. J. (1971). "Water requirements or water demands?" Journal‐American Water Works ...
"Quartz. Retrieved 17 November 2020.. *^ "pandas.date_range - pandas 1.0.0 documentation". pandas. 29 January 2020. Retrieved 30 ...
In aventurine quartz, chrome-bearing fuchsite makes for a green stone and various iron oxides make for a red stone.[12] ... quartz, topaz, beryl, tourmaline and fluorite, among others. ...
"Quartz. Retrieved 3 October 2013.. *^ "Passenger Statistics for 2007". Mexico: Grupo Aeropuerto del Pacifico. Retrieved January ...
"Quartz. Retrieved 7 October 2019.. *^ "Beloved legacy" (PDF). www.netanya.ac.il.. ...
"Quartz. Retrieved December 14, 2017.. *^ Tim Wu, "Network Neutrality, Broadband Discrimination", Columbia University Law School ...
"Quartz.. *^ Solomon Williams Obotetukudo (2010). The Inaugural Addresses and Ascension Speeches of Nigerian Elected and Non- ...
"Quartz. Retrieved 11 May 2020.. Further reading[edit]. .mw-parser-output .refbegin{font-size:90%;margin-bottom:0.5em}.mw-parser ...
"Quartz. Retrieved 29 September 2019.. *^ Deng, Francis; Gluckstein, Jeffrey A.; Larsen, Douglas P. (1 December 2015). "Student- ...
"Quartz.. *^ "Indonesia bans 'gay' emojis on messaging apps". 12 February 2016. Retrieved 12 February 2016.. ...
"Quartz. Retrieved 24 April 2019.. *^ "ICAO Document 9303: Machine Readable Travel Documents, Part 9: Deployment of Biometric ...
Quartz. Retrieved September 25, 2020.. *^ "wikipedia.org Competitive Analysis, Marketing Mix and Traffic - Alexa". www.alexa. ... "Quartz. Archived from the original on July 9, 2018. Retrieved July 9, 2018.. ...
β-quartz hexagonal. hP18, P6222, No. 180[58] 2.533 Closely related to α-quartz (with an Si-O-Si angle of 155°) and optically ... The most common example is seen in the quartz polymorphs. For example, in the unit cell of α-quartz, the central tetrahedron ... The transformation from α-quartz to beta-quartz takes place abruptly at 573 °C. Since the transformation is accompanied by a ... Silicon dioxide is mostly obtained by mining, including sand mining and purification of quartz. Quartz is suitable for many ...
"Quartz. The Atlantic Media Company. Archived from the original on November 3, 2013. Retrieved August 6, 2013.. .mw-parser- ...
"Quartz. Archived from the original on 20 December 2015. Retrieved 10 March 2016.. ...
Milky quartz[edit]. Milk quartz or milky quartz is the most common variety of crystalline quartz. The white color is caused by ... α-quartz: trigonal β-quartz: hexagonal. Crystal class. α-quartz: trapezohedral (class 3 2); β-quartz: trapezohedral (class 6 2 ... the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz ... Rose quartz[edit]. Rose quartz is a type of quartz which exhibits a pale pink to rose red hue. The color is usually considered ...
Smoky quartz is a grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost- ... α-quartz: trigonal trapezohedral class 3 2; β-quartz: hexagonal 622[1]. ... "The Gemstone Smoky Quartz". minerals.net. Retrieved 14 December 2015.. *^ Joseph Needham, Science & Civilisation in China ( ... Quartz. Webmineral.com. Retrieved on 2013-03-07. *^ Hurlbut, Cornelius S.; Klein, Cornelis (1985). Manual of Mineralogy (20 ed ...
Oh, and your chances improve if you believe that the quartz will help.. There is no question, however, that quartz works to ... Other minerals do the same, but quartz is one of the most prevalent-and just about all petrified wood is solid quartz. The ... Or to a "quartz silicate concretion," recently discovered in a French mine, with two-million-year-old ripples formed by running ... The watch on your wrist probably keeps time with a sliver of quartz. It may not be much of a specimen compared to the wonders ...
quartz: Widely distributed mineral of many varieties that consists primarily of silica, or silicon dioxide (SiO 2). Minor ... Quartz exists in two forms: (1) alpha-, or low, quartz, which is stable up to 573 °C (1,063 °F), and (2) beta-, or high, quartz ... Quartz has great economic importance. Many varieties are gemstones, including amethyst, citrine, smoky quartz, and rose quartz ... silica mineral: Quartz. Quartz occurs in many varieties in almost all types of igneous, sedimentary, and metamorphic rocks. It ...
Quartz Master is a quartz surfaces manufacturer. It distributes through many locations in US and Montreal, Quebec, Canada. And ... About Quartz Master Quartz Master is a worlds experts of quartz surfaces. Quartz Masters slabs are made of 93% natural quartz ... Quartz Master produces the largest quartz slabs, 120" x 64". Quartz Master is determined to continue to push boundaries in ... Quartz Master is a quartz surfaces manufacturer, headquartered in Bayonne, New Jersey. The company produces the highest quality ...
The Quartz series is composed of four various formations of inorganic solids, abstracted in an organic manner.… ... The Quartz series is composed of four various formations of inorganic solids, abstracted in an organic manner. FORMAT: W:29.7 x ... The Quartz series is composed of four various formations of inorganic solids, abstracted in an organic manner. FORMAT: W:29.7 x ...
Green Quartz 12 x 8mm Pear Faceted Stone, AA-Grade - Item: 69393 ... Lavender Moon Quartz 16 x 12mm Oval Faceted Stone - Item: 79258 ... Lavender Moon Quartz 16 x 12mm Oval Faceted Stone More options available ...
quartz clock movement. Eventually mechanical movements terminated as well as electronic ones took their area. These use quartz ...
In Quartz, you belong to a group of dwarves who has just discovered a new mine on their land. Excited by the discovery, you ... Following along the same lines as its predecessor, Ouro de Tolo, Quartz is fast and tense game of push-your-luck and risk ...
The instantaneous values of the light intensity at several points of the luminous part of an alternating current quartz mercury ... has sent us an interesting communication describing measurements he has made on the intensity of the light emitted by a quartz ... Light Intensity of a Quartz Mercury Lamp. Nature volume 127, page254(1931)Cite this article ... The instantaneous values of the light intensity at several points of the luminous part of an alternating current quartz mercury ...
... quartz has been the common chameleon of gemstones, standing in for more expensive gemstones ranging from diamond to jade. ... Rose quartz. The pale pink colour of quartz, which can range from transparent to translucent, is known as rose quartz. The ... Smoky quartz. Smoky quartz is a brown transparent quartz that is sometimes used for unusual faceted cuts. The commercial market ... Rutilated quartz and tourmalinated quartz. While most varieties of transparent quartz are valued most when they show no ...
Citrix partnered with Quartz Insights to conduct and analyze research about technologys role in the modern workplace ... Combining Citrixs expertise on designing technology that empowers employees with Quartzs understanding of the changing ... New research from Citrix and Quartz Insights shows that a companys approach to fostering this positive connection is critical. ...
Find great deals on Swarovski Crystals Quartz Jewelry at Kohls today! ... Lavish by TJM 14k Rose Gold Over Silver & Sterling Silver Rose Quartz Ring - Made with Swarovski Marcasite ... Lavish by TJM Sterling Silver Cubic Zirconia & Simulated Quartz Openwork Heart Pendant - Made with Swarovski Marcasite ... Lavish by TJM Sterling Silver Champagne Quartz, Onyx & Cubic Zirconia Bib Necklace - Made with Swarovski Marcasite ...
Fine quartz particulates were collected on prototype filters in a Marple chamber, either open-faced or through PDMs during test ... Results suggest that the P-7 method is adaptable to variations in filter materials and that quartz dust analysis by the P-7 ... The filters were then subjected to MSHA P-7 analysis and the spectrometrically based analytical results for quartz mass were ... Research by the National Institute for Occupational Safety and Health (NIOSH) has pursued quartz analysis for the specialized ...
... quartz, in mine dusts. In this study we demonstrate the feasibility of end-of-shift measurement of a-quartz using a direct-on- ... Mining Publication: Direct-on-Filter alpha-Quartz Estimation in Respirable Coal Mine Dust using Transmission Fourier Transform ... Respirable Size-Selective Sampler for End-of-Shift Quartz Measurement: Development and Performance ...
PRWEB) May 04, 2013 -- Aypearl.com, a leading wholesale jewelry website, has recently released some new rose quartz jewelry to ... Wearing rose quartz jewelry can bring good luck to the wearer. Im very lucky after wearing the rose quartz beaded bracelet, ... There are many styles of many rose quartz jewelry on Aypearl.com , such as rose quartz necklace, bracelet, earrings, rings and ... Rose quartz is symbol for true love and beauty. Now it is known as the Stone of Unconditional Love. Single people can find ...
Quartz. Comments: Slightly smokey quartz overgrown with rose quartz. Note the exceptional transparency of the rose quartz.. ... Rock and Mineral Shows Google Search for Quartz. Weinrich Minerals, Inc. Google Search for Quartz. Ask about Quartz here :. Ask ... Visit our Advertisers for Quartz :. Cape Minerals Google Search for Quartz. Dakota Matrix Minerals Google Search for Quartz. ... Google Search for Quartz. Exceptional Minerals Google Search for Quartz. John Betts Fine Minerals Search for Quartz. McDougall ...
... src/main/java/org/apache/aurora/scheduler/cron/quartz/Quartz.java , PRE-CREATION , src/main/java/org/apache/aurora/scheduler/ ... Re: Review Request 19767: CronScheduler based on Quartz Maxim Khutornenko Mon, 21 Apr 2014 17:55:21 -0700 ... Re: Review Request 19767: CronScheduler based on Quartz Kevin Sweeney. * *Re: Review Request 19767: CronScheduler based on Qu ... src/test/java/org/apache/aurora/scheduler/cron/quartz/CronIT.java , PRE-CREATION , , src/test/java/org/apache/aurora/scheduler/ ...
The sensor uses a pressure-dependent sealed capacitor element constructed from fused quartz plates, and circuit detection ... Quartz Capsule Pressure Transducer for the Automotive Industry 810374. This paper describes a low-cost, high-performance ... Temperature effects due to the thermal elastic and linear expansion coefficients of the quartz capsule are also discussed, as ... Citation: Lee, C. and Pfeifer, J., "Quartz Capsule Pressure Transducer for the Automotive Industry," SAE Technical Paper 810374 ...
Investigations of market injury to U.S. domestic industry by foreign companies due to product dumping and/or subsidization under Sections 701 or 731 under Title VII of the Tariff Act of 1930 or injury due to substantially increase imports under sections 201 or 202 of the Trade Act of 1974 or section 302 of the NAFTA Implementation Act ...
... s largest selection and best deals for Pink Rose Quartz Costume Jewellery. Shop with confidence on eBay! ... rose quartz gemstone healing heart bracelet love 18mm rose quartz heart charm. healing heart charm. 8 & 10mm rose quartz beads ... A Rose Quartz Star 20mm Healing Crystal Pendant. Rose Quartz is a Stone Of Love, it can help you to feel more Loved. The ... Rose Quartz Crystal is a crystal that derives its name from its lovely rose pink color. These quartz crystals come in a range ...
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This is the high-temperature phase of α quartz. * Over the years, many people have told us that the coordinates and pictures ...
Rose Quartz Luminizer at Sephora. This organic emollient balm melts into the skin for extra hydration and imparts sheer ... Noni fruit extract, coconut and rosehip oils nourish skin while rose quartz enhances your natural glow.. What else you need to ... KORA OrganicsRose Quartz Luminizer. SIZE 0.21 oz/6 g•ITEM 2120483 ...
Great skill is required to cut quartz in this spiral form. The quartz offered in this Lot, and the two previous, is ice-clear ... A large quartz flame sculpture, Brazil -- 34cm. (13 3/8in.) high, 16kg with a turned marble socle ...
Blue quartz Chalcedony Citrine Rose quartz Prasiolite Rutilated quartz Sceptred quartz Smoky quartz Not all varieties of quartz ... the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz ... Milk quartz or milky quartz is the most common variety of crystalline quartz. The white color is caused by minute fluid ... Minerals portal Geology portal Earth sciences portal Fused quartz List of minerals Quartz fiber Quartz reef mining Quartzolite ...
This document is designed to be viewed using frames-capable browsers. If you are seeing this message you are using a browser not capable of frames ...
A vintage floral sculpture composed of a quartz crystal base decorated with patinated copper leaves and copper flowers.CIRCA: ... DESCRIPTION: A vintage floral sculpture composed of a quartz crystal base decorated with patinated copper leaves and copper ...
Top-rated Round Yellow Quartz Jewelry at Ross-Simons. On Sale Today. Free shipping & easy 30-day returns. Fabulous jewelry. ... Quartz Jewelry (Yellow, Round, $100 - $250). We were unable to find a match for your search. May we suggest these popular ... Quartz&sp_c=38&sp_n=1&sort=rank_sales. HTTP=1941; PARSE=8. ...
  • Many varieties are gemstones, including amethyst , citrine , smoky quartz , and rose quartz . (britannica.com)
  • Rose quartz. (britannica.com)
  • Despite the popularity of quartz gems like amethyst, citrine, ametrine, rose quartz, onyx, agates, chrysoprase, rutilated quartz and other varieties, many people in the jewellery industry take quartz for granted because of its affordable price. (gemstone.org)
  • The pale pink colour of quartz, which can range from transparent to translucent, is known as rose quartz. (gemstone.org)
  • Transparent rose quartz is very rare, and usually so pale that it does not show very much colour at all except in large sizes. (gemstone.org)
  • Aypearl.com, a leading wholesale jewelry website, has recently released some new rose quartz jewelry to indicate appreciation to all customers worldwide. (prweb.com)
  • Rose quartz is symbol for true love and beauty. (prweb.com)
  • Single people can find their lover easily after wearing rose quartz jewelry. (prweb.com)
  • In crystal healing, rose quartz can be utilized to treat the whole body, especially the heart and blood circulation. (prweb.com)
  • Rose quartz strengthens the physical heart and circulatory system and releases impurities from body fluids. (prweb.com)
  • Wearing rose quartz jewelry can bring good luck to the wearer. (prweb.com)
  • I'm very lucky after wearing the rose quartz beaded bracelet, oh, I decide to buy this bracelet at first sight, I bought it from Aypearl, I love it so much that I keep it with me all the time. (prweb.com)
  • There are many styles of many rose quartz jewelry on Aypearl.com , such as rose quartz necklace, bracelet, earrings, rings and so on. (prweb.com)
  • Everyone can choose favorite rose quartz jewelry to attract or show love. (prweb.com)
  • Slightly smokey quartz overgrown with rose quartz. (webmineral.com)
  • Note the exceptional transparency of the rose quartz. (webmineral.com)
  • The Rose Quartz consists of elements including magnesium, iron, and oxygen, while the stone aids in reducing visible inflammation and tension. (sephora.com)
  • Carefully selected and perfect set 5*5.5mm Heart Round Pink Rose quartz. (ebay.co.uk)
  • Lovely Dainty Rose Quartz. (ebay.co.uk)
  • CABOCHON : Natural Rose Quartz. (ebay.co.uk)
  • Rose Quartz Crystal is a crystal that derives its name from its lovely rose pink color. (ebay.co.uk)
  • Rose Quartz Heart pendant supplied in gift bag. (ebay.co.uk)
  • UK Beautiful Rose Quartz Love Heart Pendant Black Cord Necklace. (ebay.co.uk)
  • The high energy of quartz gives rose quartz the property of enhancing love in virtually any situation. (ebay.co.uk)
  • Handmade Fertility Wish Bracelet with Rose Quartz and opalite Moonstone- Gift ❤ Rose Quartz is Genuine, opalite Moonstone is manmade Close your eyes Make a Wish Tie this bracelet on your wrist When the bracelet breaks in two Your Wish may come true. (ebay.co.uk)
  • Rose Quartz is said to help increase overall fertility. (ebay.co.uk)
  • Rose quartz is helpful and protective during pregnancy and with childbirth. (ebay.co.uk)
  • Using Rose Quartz removes fears, resentments and anger. (ebay.co.uk)
  • 4 mm Round Rose quartz bead bracelet with 4 mm silver plated accent beads and a small angel wing charm. (ebay.co.uk)
  • Rose Quartz is the stone of unconditional love and infinite peace. (ebay.co.uk)
  • Considered the most important stone for the heart and heart chakra, Rose Quartz helps to teach the true essence of love, purifying and opening the heart at all levels while bringing deep inner healing and self love. (ebay.co.uk)
  • Rose Quartz is a soothing and happy stone that will remove resentments, fear and anger and will promote forgiveness, kindness, tolerance and compassion. (ebay.co.uk)
  • Noni fruit extract, coconut and rosehip oils nourish skin while rose quartz enhances your natural glow. (sephora.com)
  • Rose quartz is a quartz variety that gets its name from its delicate pink color. (gia.edu)
  • While rose quartz is often cabochon-cut, it's also popular in faceted styles. (gia.edu)
  • The delicate pastel pinks of rose quartz have a romantic appeal. (gia.edu)
  • Rose quartz is commonly translucent rather than transparent. (gia.edu)
  • This enormous rose quartz rough weighs 206.80 grams (over 1000 carats)! (gia.edu)
  • The color of rose quartz ranges from very light pink (almost white) to medium-dark pink. (gia.edu)
  • small rose quartz specimens with good color tend to be scarce. (gia.edu)
  • Rose quartz is usually found in massive form, so well-shaped crystals are highly prized. (gia.edu)
  • Rose quartz has been recognized as the gem that commemorates the fifth wedding anniversary. (gia.edu)
  • When rose quartz contains small, well oriented inclusions, it can sometimes show asterism. (gia.edu)
  • When rose quartz contains numerous small inclusions, it can show a cat's-eye or the more common star effect. (gia.edu)
  • Rose quartz has been popular with gem carvers for producing figurines and other small decorative objects. (gia.edu)
  • The following factors combine to determine rose quartz value. (gia.edu)
  • Rose quartz comes in a range of delicate shades, from very light to medium-dark pink. (gia.edu)
  • Rose quartz owes its cloudy translucence to microscopic mineral inclusions. (gia.edu)
  • Rose quartz is the stone of love, both of romance and friendship. (norbulingka.org)
  • Inspired by legends of rose quartz's ability to retain beauty and replenish energy, this nourishing facemask is infused with real rose quartz crystals. (freepeople.com)
  • Smoky quartz is a grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystal. (wikipedia.org)
  • Morion is the German, Danish, Spanish and Polish synonym for smoky quartz. (wikipedia.org)
  • Cairngorm is a variety of smoky quartz crystal found in the Cairngorm Mountains of Scotland . (wikipedia.org)
  • Smoky quartz is common and was not historically important, but in recent times it has become a popular gemstone , especially for jewellery . (wikipedia.org)
  • Sunglasses , in the form of flat panes of smoky quartz, were used in China in the 12th century. (wikipedia.org)
  • Wikimedia Commons has media related to Smoky quartz . (wikipedia.org)
  • Smoky quartz is a brown transparent quartz that is sometimes used for unusual faceted cuts. (gemstone.org)
  • Purple crystal of fluorapatite on slightly smoky quartz crystals. (webmineral.com)
  • Made from Natural Green Quartz Gemstone. (amazon.com)
  • This Ankh is Engraved on Natural Green Quartz Gemstone and engages Powers of Stone and Magic Symbol. (amazon.com)
  • Your each is (3) pretty points: (1) each of quartz, amethyst and citrine, each between 3/4" and 1-1/2" long. (sciplus.com)
  • Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings , especially in Eurasia . (wikipedia.org)
  • In nature quartz crystals are often twinned (with twin right-handed and left-handed quartz crystals), distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. (wikipedia.org)
  • And though many minerals create crystals, quartz is the mainstay of the crystal business. (nwf.org)
  • Not all the New Age lore about minerals involves quartz, of course, but it is a central ingredient. (nwf.org)
  • Quartz has a glassy lustre, and is hard in comparison to many other minerals. (ehow.co.uk)
  • Quartz worktops are fabricated from natural quartz, one of the hardest minerals found in the Earth, and small amounts of glass or metallic flecks are added to create variety, resulting in beautiful worktops. (silestone.com)
  • Frequently the faces are of different sizes (fig. 3): mis-shapen crystals are common and sometimes very puzzling, but they can always be orientated by the aid of the very characteristic striations on the prism faces, which serve also to distinguish quartz from other minerals of similar appearance. (wikisource.org)
  • The basal plane, so common on calcite and many other rhombohedral minerals, is of the greatest rarity in quartz, and when present only appears as a small rough face formed by the corrosion of the crystal. (wikisource.org)
  • Quartz minerals are essential for manufacturing many high-tech products in areas such as semi-conductor technologies telecommunications high temperature lamp tubing and optics. (authorstream.com)
  • Our team is skilled and qualified professionals for manufacturer minerals we are engaged in offering a wide range of Quartz Powder. (authorstream.com)
  • Quartz is one of the most common minerals, which makes it an affordable option for beads in jewelry designs. (artbeads.com)
  • Now consider the less scientific side of the human response to quartz: In forms that include color-banded agate, green jasper and purple amethyst, the mineral has beguiled jewelers, mythmakers and healers since ancient civilizations. (nwf.org)
  • White epistilbite cluster 25 mm across on amethyst quartz crystal matrix. (webmineral.com)
  • Amethyst is a form of quartz that ranges from a bright vivid violet to dark or dull lavender shade. (wikipedia.org)
  • What Is Swiss Quartz Movement? (reference.com)
  • Swiss quartz movement" refers to a clock or watch with a movement (the part of the watch that moves the hands) that is made in Switzerland and uses quartz. (reference.com)
  • A watch with Swiss quartz movement may have been assembled in a country other than Switzerland. (reference.com)
  • In the case of the label "Swiss quartz movement," the movement would meet the Swiss-made standards, but the watch may have been assembled in another country. (reference.com)
  • Make your own custom clock in a tick with this quartz movement. (sciplus.com)
  • Round dress watch featuring two-tone case and dark blue dial with baton hour markers 39 mm stainless steel case with Hardlex dial window Japanese quartz movement with analog display Croco-embossed leather band with buckle closure Water resistant to 100. (pricegrabber.com)
  • Brand Name: Swatch Model number: GN256 Case: Navy blue Dial color: Navy blue, floral design on each hour, white hands Band: Navy blue with floral pattern Clasp: Navy blue buckle Movement: Swiss Quartz Water Resistant Case dimension: 34 mm (3.4cm) Watch measurement: 9 1/4 inches (23.5 cm) Band Width: 18 millimeters (1.8 cm) Case Thickness: 8.75 mm MSRP: $60.00. (ebay.ca)
  • Brand Name: Swatch Model number: SUON118 Dial color: Mallard print on white dial, white knife and fork hands Case: Round dark green Band: Plaid print silicone with green loop Clasp: Dark green buckle and orange thong Water Resistant Movement: Swiss Quartz Case dimension: 41 mm (4.1 cm) Case thickness: 7 mm Watch measurement: 10 1/4 inches 26 cm) Band Width: 22 mm (2.2 cm) MSRP: $75.00. (ebay.ca)
  • Brand Name: Swatch Model number: SUOB120 Dial color: Yellow Case: Glossy black round Band: Black silicone with yellow loop Clasp: Plastic yellow buckle Water Resistant Movement: Swiss Quartz Case dimension: 43 mm (4.3 cm) Case thickness: 9 mm Watch measurement: 10 1/4 inches (26 cm) Band Width: 22 mm (2.2 cm) MSRP: $70.00 Original Swatch gift box and manual instruction booklet. (ebay.ca)
  • fashion timepieces that transcend from work to pleasure PRECISION TIMEKEEPING: Smooth quartz movement and superior. (pricegrabber.com)
  • Also check out our selection of Quartz Movement Accessories . (klockit.com)
  • There are many different varieties of quartz, several of which are semi-precious gemstones . (wikipedia.org)
  • Throughout history, quartz has been the common chameleon of gemstones, standing in for more expensive gemstones ranging from diamond to jade. (gemstone.org)
  • And in the 1980s, a New Age-inspired rage for crystals spawned a multi-million-dollar industry, mostly in translucent quartz. (nwf.org)
  • Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. (wikipedia.org)
  • Quartz watch movements work by passing electricity from a battery through a tiny piece of quartz (a mineral made from silicon dioxide), which oscillates at precisely 32,768 times per second. (reference.com)
  • Even with a diamond drill bit, you will need to reduce the friction at the contact point between the drill bit and the piece of quartz. (ehow.com)
  • Hitachi has announced (original press release in Japanese, translated to English) a new storage medium that uses a laser to imprint dots on a piece of quartz glass that correspond to binary code. (slashdot.org)
  • Featuring five striking quartz crystal spires in varying sizes, our gold necklace has a dreamy look with bold colors and eye-catching iridescence emanating from each unique piece of quartz. (worldmarket.com)
  • Quartz , widely distributed mineral of many varieties that consists primarily of silica , or silicon dioxide (SiO 2 ). (britannica.com)
  • Large amounts of quartz sand (also known as silica sand) are used in the manufacture of glass and ceramics and for foundry molds in metal casting. (britannica.com)
  • Crushed quartz is used as an abrasive in sandpaper, silica sand is employed in sandblasting, and sandstone is still used whole to make whetstones, millstones, and grindstones. (britannica.com)
  • Silica glass (also called fused quartz) is used in optics to transmit ultraviolet light . (britannica.com)
  • Microcrystalline varieties of silica known as chert , flint, agate , and jasper consist of a fine network of quartz. (britannica.com)
  • In order to help reduce silicosis in miners, the National Institute for Occupational Health and Safety (NIOSH) is developing field-portable methods for measuring airborne respirable crystalline silica (RCS), specifically the polymorph a- quartz , in mine dusts. (cdc.gov)
  • Shocked quartz is often associated with the high-pressure silica polymorphs coesite and stishovite . (mindat.org)
  • Silica glass melted out of high purity quartz provides a wide range of exceptional optical mechanical and thermal properties. (authorstream.com)
  • Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. (wikipedia.org)
  • HOYA's high precision fused silica quartz wafers are ideal for applications involving biotech arrays, telecommunications, photomasks, and sensors. (photonicsonline.com)
  • During the pressure shock, the crystalline structure of quartz will be deformed along planes inside the crystal. (mindat.org)
  • Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. (wikipedia.org)
  • Today, the term rock crystal is sometimes used as an alternative name for transparent coarsely crystalline quartz. (wikipedia.org)
  • Because of its piezoelectric property, a quartz plate can be used as a pressure gauge , as in depth-sounding apparatus. (britannica.com)
  • Quartz crystal microbalance (QCM) is a piezoelectric sensor with multiple application such as antigen-antibody interactions, detection of virus capsids, protein adsorption, and DNA and RNA hybridization. (springer.com)
  • Quartz crystals are piezoelectric, which is to say that when you deform them they develop an electrical charge, and when an electrical charge is applied to them they in turn deform. (hackaday.com)
  • Cathy I. Cheng, Yi-Pin Chang, Yen-Ho Chu (2012) Biomolecular interactions and tools for their recognition: focus on the quartz crystal microbalance and its diverse surface chemistries and applications. (springer.com)
  • Zuxuan Lin, Yip CM, Scott Joseph I, Ward MD (1993) Operation of an ultrasensitive 30-MHz quartz crystal microbalance in liquids. (springer.com)
  • Janshoff A et al (2000) The quartz-crystal microbalance in life science. (springer.com)
  • Zong-Han Liu, Chih-Hsiung Shen (2012) New groove structures for miniature quartz crystal microbalance with low crystal impedance. (springer.com)
  • Lai CC., Chen S.J., Shen CH. (2013) Innovative Designs for Quartz Crystal Microbalance. (springer.com)
  • The variety of chalcedonies is even greater than that of transparent quartz, including cryptocrystalline quartz with patterns as well as a wide range of solid colours. (gemstone.org)
  • Quartz Powder of different microns. (tradekey.com)
  • Earth Minechem offer Quartz Powder in wide range. (authorstream.com)
  • We are manufacture of Quartz Powder in India. (authorstream.com)
  • Bulk Supplier Quartz Powder in India http://www.earthminechem.com/quartz Earth Minechem offer Quartz Powder in wide range. (authorstream.com)
  • Earth Minechem provides Quartz Powder in India with best Quality. (authorstream.com)
  • Quartz Powder in India http://www.earthminechem.com/quartz Earth Minechem is best supplier of Quartz Powder in India with purity. (authorstream.com)
  • Quartz Master is a quartz surfaces manufacturer, headquartered in Bayonne, New Jersey. (prweb.com)
  • Quartz Master is a world's experts of quartz surfaces. (prweb.com)
  • Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). (webmineral.com)
  • As one of the hardest countertop surfaces around, quartz is considered by many to be the most durable choice available for kitchen or bathroom countertops. (hubpages.com)
  • Because it is a man-made product, quartz can be used for larger vertical surfaces like backsplashes or even shower enclosures, without one needing to be concerned about fissures and seaming. (hubpages.com)
  • Quartz is non-porous, which means that you don't need to be concerned about them absorbing germs or bacteria, thus making your work surfaces 99.9% bacteria free. (hubpages.com)
  • Caesarstone is a manufacturer of quality quartz surfaces for a range of applications such as kitchen countertops, bathroom vanities and counters, and custom solutions for home and commercial interiors. (caesarstoneus.com)
  • Available worldwide, Caesarstone is the professional choice for interior design ideas and beautiful, durable quartz surfaces. (caesarstoneus.com)
  • How to Clean a Quartz Stone" last modified May 13, 2017. (ehow.co.uk)
  • In June 2016, Quartz Master opened its new 6500 square foot warehouse in Los Angeles to serve Los Angeles County. (prweb.com)
  • First, the common denominator is the mineral quartz, capable of recording geological traumas of the distant past, creating petrified forests and regulating the information in our computers. (nwf.org)
  • The mineral quartz is the most abundant mineral in the earth's crust. (ehow.co.uk)
  • Set up a search alert to hear when Quartz Wristwatches items arrive. (liveauctioneers.com)
  • Considering these three key elements, let's narrow your search down to two of the main worktop materials, quartz and granite, both of which provide a wonderful solution that meets these ideal qualifications. (silestone.com)
  • I did an extensive search on the web for quartz heating elements and feel pretty safe in saying that they do not exist. (fixya.com)
  • [10] Today, the term rock crystal is sometimes used as an alternative name for the purest form of quartz. (wikipedia.org)
  • The room-temperature form of quartz, α-quartz, undergoes a reversible change in crystal structure at 573 °C to form β-quartz. (wikipedia.org)
  • Quartz mineral embedded in limestone (top right of the sample), easily identifiable by its hexagonal form. (wikipedia.org)
  • β-quartz belongs to the hexagonal system, space group P 6 2 22 and P 6 4 22, respectively. (wikipedia.org)
  • The structure of beta-quartz is hexagonal, with either a left- or right-handed symmetry group equally populated in crystals. (britannica.com)
  • Quartz crystallizes in the trapezohedral-hemihedral class of the rhombohedral division of the hexagonal system. (wikisource.org)
  • The majority of crystals of quartz are bounded not only by the faces of a hexagonal prism m {2 1 1 } and a hexagonal bipyramid, (fig. 1), though sometimes the prism is absent (fig. 2). (wikisource.org)
  • β-quartz belongs to the hexagonal system, space group P6222 and P6422, respectively. (wikipedia.org)
  • Numerous other faces have been observed on crystals of quartz, but they are of rare occurrence. (wikisource.org)
  • Twinned crystals of quartz are extremely common, but are complex in character and can only be deciphered when the faces s and x are present, which is not often the case. (wikisource.org)
  • Quartz belongs to the trigonal crystal system . (wikipedia.org)
  • α-quartz crystallizes in the trigonal crystal system, space group P 3 1 21 or P 3 2 21 depending on the chirality. (wikipedia.org)
  • The structure of alpha-quartz is trigonal, again with either a right- or left-handed symmetry group. (britannica.com)
  • Quartz Master's slabs are made of 93% natural quartz and 7% resin, making it the hardest, most durable and non-precious stone in the market. (prweb.com)
  • CaesarStone is composed of 93% natural quartz and 7% pigments and polymer resins. (patiogallery.com)
  • Also, the superspace symmetry of the incommensurate phases of quartz and aluminum phosphate is determined, and some consequences of the superspace symmetry are noted. (springer.com)
  • The additional faces s and x (figs. 4 and 5), which indicate the true degree of symmetry of quartz, are of comparatively rare occurrence except on crystals from certain localities. (wikisource.org)
  • That however will only give you part of the story, for there is more to the quartz resonator than first meets the eye. (hackaday.com)
  • Your options are nearly endless as quartz ranges from natural colors such as whites, blacks and browns to other colors such as golds or blues. (silestone.com)
  • However, unlike granite or marble, quartz countertops are made in a factory and have a ratio of 93% quartz to 7% resin, glass or metallic flecks, hence the ability to purchase them in so many variations of color and patterns. (hubpages.com)
  • Engineered stone, made of ground quartz and resin, has become a tremendously popular material for kitchen countertops due to its durability, low maintenance and customizable colors and patterns. (eurekalert.org)
  • Practical crystals take the form of precisely-ground discs or wafers of synthetic quartz, with chemically deposited metal electrodes on either side. (hackaday.com)
  • When deciding on what material to use for your kitchen worktop, you cannot go wrong with picking quartz or granite. (silestone.com)
  • The design of a quartz worktop not only brings character to your kitchen but offers performance advantages that exceed other traditional materials. (silestone.com)
  • This means that where one must reseal a granite countertop, with quartz resealing is unnecessary, thus making quartz countertops virtually maintenance free. (hubpages.com)
  • When looking for quartz countertop repair services close to you, Better Homes & Gardens Home Services helps you find local contractors, handyman, and home improvement services. (bhg.com)
  • Connect with quartz countertop repair services and get a free quote today. (bhg.com)
  • Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral . (wikipedia.org)
  • This is the high-temperature phase of α quartz . (univie.ac.at)
  • The high-temperature quartz glass envelope allows the filament to remain at a much higher temperature, for a light that's closer to natural daylight. (popularmechanics.com)
  • Wrap the quartz pendant with the dripping wet rag, leaving the area of the pendant where you need to drill the hole exposed. (ehow.com)
  • make sure the exposed area of the quartz pendant is facing up. (ehow.com)
  • Set the speed of the rotary tool mid-way and begin drilling into the quartz pendant. (ehow.com)
  • Remove the clean rag from the cold water and squeeze the rag over the quartz pendant to cool the diamond drill bit. (ehow.com)
  • Release the wet rag-wrapped quartz pendant from the table-mounted vise after you have completed the drilling process. (ehow.com)
  • Dry the drilled quartz pendant with a clean rag to make the quartz pendant ready for hardware. (ehow.com)
  • But not only are quartz countertops durable, but they are some of the most varied. (hubpages.com)
  • You get the smoothness and quality of quartz combined with a durable surface that is resistant to stains, scratches and moisture. (ikea.com)
  • Tiger's eye quartz contains brown iron which produces its golden yellow colour. (gemstone.org)
  • Properly cut plates of quartz are used for frequency control in radios, televisions, and other electronic communications equipment and for crystal-controlled clocks and watches. (britannica.com)
  • Quartz watches operate on batteries, rather than having to being wound. (reference.com)
  • Quartz movements can keep time longer and more accurately than ordinary watches or pendulum clocks. (reference.com)
  • Women's Stuhrling Original Vogue Blue Dial Watch - Blue - Watches Ladies diver quartz silver case, blue bezel, crystal studded blue mop dial, silver hands, silver markers, silver bracelet watch silver-tone alloy case with a silver-tone stainless steel. (pricegrabber.com)
  • The ZTE Quartz is the biggest, but it is one of the thickest Android Wear watches. (pcworld.com)
  • So, if you have a small wrist, you can add the ZTE Quartz to the list of Android Wear 2.0 watches that aren't made for you. (pcworld.com)
  • With a single button and a simple design, the ZTE Quartz won't stand out from other watches. (pcworld.com)
  • Shopping for the best deal on Mop dial stainless steel, Quartz, Round, Blue, Blue Watches - Select a product below or see other matches to read product reviews, compare prices and store ratings. (pricegrabber.com)
  • Trendy hot selling time service international titanium quartz watches bezel japan movt decorate your own wrist watch-- Packaging & Shipping Welcome to leave a message! (alibaba.com)
  • Although colourless quartz is relatively common, large flawless specimens are not, which is why crystal balls these days are made of glass, not quartz. (gemstone.org)
  • Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO 4 silicon-oxygen tetrahedra , with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2 . (wikipedia.org)
  • [6] Like other quartz gems, it is a silicon dioxide crystal. (wikipedia.org)
  • High purity quartz becomes a strategic raw material for the industries like Ferro alloys, Ferro silicon and Glass. (authorstream.com)
  • The high purity quartz can be applied as crucibles for semi conductor and solar optical quartz glass fillers silicon quartz wool metal refractory. (authorstream.com)
  • Crystal structure of α-quartz (red balls are oxygen, grey are silicon) β-quartz Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. (wikipedia.org)
  • Many stunning art deco jewellery designs featured the black and white quartz combination of rock crystal and onyx. (gemstone.org)
  • Another staple of the jewellery industry is black onyx, chalcedony quartz which owes its even black colour to an ancient dyeing process that is still used today. (gemstone.org)
  • Quartz that is formed not of one single crystal but a number of finely grained microcrystals is known as chalcedony. (gemstone.org)
  • A believer might, for example, hold jasper to increase energy, blue lace agate to achieve tranquility or pink quartz for self esteem. (nwf.org)
  • Quartz, with a hardness of seven, exceeds the drilling capability of standard metal drill bits. (ehow.com)
  • Quartz is the mineral defining the value of 7 on the Mohs scale of hardness, a qualitative scratch method for determining the hardness of a material to abrasion. (wikipedia.org)
  • Vig JR, LeBus JW, Filler RL (1977) Chemically polished quartz. (springer.com)
  • While most varieties of transparent quartz are valued most when they show no inclusions, some are valued chiefly because of them! (gemstone.org)
  • China, Japan, and Russia are the world's primary producers of quartz. (britannica.com)
  • In 2011, after 12 months of laborious engineering, Quartz Master introduced the world's first marble design to Quartz. (prweb.com)
  • The demand for Quartz Master's Marble Collection prompted the company to open its first distribution center in California. (prweb.com)
  • Rutilated quartz is transparent rock crystal with golden needles of rutile arrayed in patterns inside it. (gemstone.org)
  • DR. TSUNESABURO ASADA, of the Shiomi Institute of Physical and Chemical Research, Osaka, Japan, has sent us an interesting communication describing measurements he has made on the intensity of the light emitted by a quartz mercury lamp. (nature.com)
  • The grade Q3400 is made of 100 % high-purity quartz microfibers only and pre-heated to guarantee excellent weight and dimensional stability. (sartorius.com)
  • Our quartz wall panels are made from the same high-quality material as our quartz worktops. (ikea.com)
  • Quartz occurs in many varieties in almost all types of igneous, sedimentary, and metamorphic rocks. (britannica.com)
  • Metamorphism of quartz-bearing igneous and sedimentary rocks typically increases the amount of quartz and its grain size. (britannica.com)
  • At very high pressures alpha-quartz transforms into coesite and, at still higher pressures, stishovite . (britannica.com)
  • Purple-colored druse of amethystine quartz and white calcite. (webmineral.com)