Macrocyclic compounds analogous to CROWN ETHERS but which lack any OXYGEN atoms.
A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.
The upper part of the tooth, which joins the lower part of the tooth (TOOTH ROOT) at the cervix (TOOTH CERVIX) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (From Jablonski, Dictionary of Dentistry, 1992, p216)
Macrocyclic polyethers with the repeating unit of (-CH2-CH2-O)n where n is greater than 2 and some oxygens may be replaced by nitrogen, sulfur or phosphorus. These compounds are useful for coordinating CATIONS. The nomenclature uses a prefix to indicate the size of the ring and a suffix for the number of heteroatoms.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
A group of compounds derived from ammonia by substituting organic radicals for the hydrogens. (From Grant & Hackh's Chemical Dictionary, 5th ed)
Exclusive legal rights or privileges applied to inventions, plants, etc.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
A technique of operations research for solving certain kinds of problems involving many variables where a best value or set of best values is to be found. It is most likely to be feasible when the quantity to be optimized, sometimes called the objective function, can be stated as a mathematical expression in terms of the various activities within the system, and when this expression is simply proportional to the measure of the activities, i.e., is linear, and when all the restrictions are also linear. It is different from computer programming, although problems using linear programming techniques may be programmed on a computer.
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.
A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class.
Organic chemicals which have two amino groups in an aliphatic chain.
The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed)
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of the fetus than is the weight. The average crown-rump length of the fetus at term is 36 cm. (From Williams Obstetrics, 18th ed, p91)
The profession of writing. Also the identity of the writer as the creator of a literary production.
Collections of facts, assumptions, beliefs, and heuristics that are used in combination with databases to achieve desired results, such as a diagnosis, an interpretation, or a solution to a problem (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed).
The beginning third of a human PREGNANCY, from the first day of the last normal menstrual period (MENSTRUATION) through the completion of 14 weeks (98 days) of gestation.
The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.
The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization.
Round-shaped structure usually located in the upper fundus of the UTERUS in early pregnancy. It comprises EMBRYO; AMNIOTIC FLUID; and YOLK SAC. It is visible in PRENATAL ULTRASONOGRAPHY by the fifth week of pregnancy. Its size is often used to determine and monitor GESTATIONAL AGE; FETAL GROWTH; and PREGNANCY COMPLICATIONS.
Complex compounds in which a dumbbell shaped molecule is encircled by a macrocycle. They are named after rota (wheel) and axis (axle). Notation with a prefix is used to indicate the number of interlocked components. They have potential use in NANOTECHNOLOGY. Rotaxanes have been made with CYCLODEXTRINS and CYCLIC ETHERS.
A colorless and flammable gas at room temperature and pressure. Ethylene oxide is a bactericidal, fungicidal, and sporicidal disinfectant. It is effective against most micro-organisms, including viruses. It is used as a fumigant for foodstuffs and textiles and as an agent for the gaseous sterilization of heat-labile pharmaceutical and surgical materials. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p794)
Agents that reduce the frequency or rate of spontaneous or induced mutations independently of the mechanism involved.
Compounds of the general formula R-O-R arranged in a ring or crown formation.
A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.
A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals.
Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.
Motifs in DNA- and RNA-binding proteins whose amino acids are folded into a single structural unit around a zinc atom. In the classic zinc finger, one zinc atom is bound to two cysteines and two histidines. In between the cysteines and histidines are 12 residues which form a DNA binding fingertip. By variations in the composition of the sequences in the fingertip and the number and spacing of tandem repeats of the motif, zinc fingers can form a large number of different sequence specific binding sites.
Membrane proteins whose primary function is to facilitate the transport of positively charged molecules (cations) across a biological membrane.
Stable zinc atoms that have the same atomic number as the element zinc, but differ in atomic weight. Zn-66-68, and 70 are stable zinc isotopes.
Compounds having the nitro group, -NO2, attached to carbon. When attached to nitrogen they are nitramines and attached to oxygen they are NITRATES.
Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Organic compounds containing a carbonyl group in the form -CHO.
Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
Eighteen-carbon essential fatty acids that contain two double bonds.
The combining of administrative and organizational resources of two or more health care facilities.
The GTPase-containing subunits of heterotrimeric GTP-binding proteins. When dissociated from the heterotrimeric complex these subunits interact with a variety of second messenger systems. Hydrolysis of GTP by the inherent GTPase activity of the subunit causes it to revert to its inactive (heterotrimeric) form. The GTP-Binding protein alpha subunits are grouped into families according to the type of action they have on second messenger systems.
Methods or procedures used to obtain samples of URINE.
A major group of unsaturated cyclic hydrocarbons containing two or more rings. The vast number of compounds of this important group, derived chiefly from petroleum and coal tar, are rather highly reactive and chemically versatile. The name is due to the strong and not unpleasant odor characteristic of most substances of this nature. (From Hawley's Condensed Chemical Dictionary, 12th ed, p96)
Cytoplasmic proteins that bind certain aryl hydrocarbons, translocate to the nucleus, and activate transcription of particular DNA segments. AH receptors are identified by their high-affinity binding to several carcinogenic or teratogenic environmental chemicals including polycyclic aromatic hydrocarbons found in cigarette smoke and smog, heterocyclic amines found in cooked foods, and halogenated hydrocarbons including dioxins and polychlorinated biphenyls. No endogenous ligand has been identified, but an unknown natural messenger with a role in cell differentiation and development is suspected.
Energy transmitted from the sun in the form of electromagnetic radiation.
The maintenance of certain aspects of the environment within a defined space to facilitate the function of that space; aspects controlled include air temperature and motion, radiant heat level, moisture, and concentration of pollutants such as dust, microorganisms, and gases. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The motion of air relative to the earth's surface.
Materials or phenomena which can provide energy directly or via conversion.
Electric power supply devices which convert biological energy, such as chemical energy of metabolism or mechanical energy of periodic movements, into electrical energy.
A clinical syndrome caused by heat stress, such as over-exertion in a hot environment or excessive exposure to sun. It is characterized by SWEATING, water (volume) depletion, salt depletion, cool clammy skin, NAUSEA, and HEADACHE.
Devices that control the supply of electric current for running electrical equipment.

Metal ion promoted cleavage of RNA phosphodiester bonds: from Zn(II) aqua ion to artificial ribonucleases. (1/3)

The potential of Zn(2+) azacrown chelates as constituents of artificial ribonucleases is discussed.  (+info)

Labeling of adenovirus particles with PARACEST agents. (2/3)

 (+info)

Silica film coating method for veneering resin composite. (3/3)

The preceramic polymer perhydropolysilazane (PHPS) is an attractive candidate as a coating material to prevent discoloration of veneering resin composites. At the present time, however, a practical method to apply this material is not available. The purpose of this study was to establish a low-temperature method for applying a silica film coating to a veneering resin composite. Two types of PHPS, NP and NL, were coated onto a veneering resin composite. The specimens were exposed to hydrogen peroxide vapor at 97 degrees C, and the state of the conversion process was evaluated using FT-IR. With exposure to the hydrogen peroxide vapor, a 0.5-microm-thick silica film similar to that produced by baking was formed on the surface of the NP samples in 10 min, while a 0.2-microm-thick film was formed on the NL in 15 min. The silica coating method described in this study may mitigate the discoloration of veneering resin composite.  (+info)

The thrust of this thesis is to study oral solid dosage formulation using hot melt coating method and to use pharmacokinetic modeling and simulation (PK M&S) as a tool that can help to predict pharmacokinetics of a drug in human and the probability of passing various bioequivalence criteria of the formulation based on the PK of the drug. Hot-melt coating using a new method, direct blending, was performed to create immediate and sustained release formulations (IR and SR). This new method was introduced to offer another choice to produce IR and SR drug delivery formulations using single and double coating layer of waxes onto sugar beads and/or drug loaded pellets. Twelve waxes were applied to coat sugar cores. The harder the wax the slower the drug was released from single coated beads. The wax coating can be deposited up to 28% of the weight of the core bead with 58% drug loading efficiency in the coating The cores were coated with single or double wax layers containing acetaminophen. Carnauba ...
Adenovirus particles. Computer artwork showing the external protein structure of adenovirus particles. Adenoviruses are the largest viruses not to have a protein coat covering their capsid. The capsid is icosahedral, having 20 triangular faces made up of regular arrangements of hexon capsomeres. Penton capsomeres make up the 12 vertices, with a fibre and knob structure (red) protruding from each. Inside the capsid is the genetic material (DNA, not shown). Adenoviruses commonly cause infections of the upper respiratory tract and eyes. - Stock Image C016/8963
The present invention provides a cationic electrodepositable coating composition comprising: I! a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of: (A) a polyurethane compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule, (B) a bisphenol type epoxy resin having at least two epoxy groups in the molecule, and (C) an active-hydrogen-containing amine compound, and II! a nonionic film-forming resin. This composition can form a coating film having excellent weathering resistance and corrosion resistance and, when used in combination with an aqueous base coating and a powder coating (a top coat), can provide a coating system which is simple to apply, which can give a coating film very superior in appearance, corrosion resistance, weathering resistance, chipping resistance, etc
A method for coating or impregnating a substrate such as a textile fabric with a treatment material such as a water or stain resistant coating comprises the steps of (a) combining a substrate and an inert transfer vehicle (e.g., a sheet material) in a pressure vessel, the inert transfer vehicle carrying the treatment material; (b) pressurizing the vessel with a carbon dioxide medium; and then (c) agitating the substrate and the inert transfer vehicle together in the pressure vessel with the substrate and the inert transfer vehicle at least periodically immersed in the carbon dioxide medium so that the treatment material is transferred from the inert transfer vehicle to the substrate.
A method for coating a sealant (39) on a separator (40) for a fuel cell. The separator has a sealing groove (118) formed therein, and widths of the sealing groove at a coating-start portion (39a) and a coating-end portion (39b) of the sealant are made greater than widths of remaining portions of the sealing groove. The sealant coating-start portion and the coating-end portion are made to intersect at a place where the width of the sealing groove is large. Adhesion between the coating-start portion and the coating-end portion is improved, and also, degrees of freedom of a sealant coated position increase, and sealability of a cell for a fuel cell is improved.
Principal Investigator:FURUICHI Ryusaburo, Project Period (FY):1996 - 1998, Research Category:Grant-in-Aid for Scientific Research (A), Section:展開研究, Research Field:無機工業化学
Purchase your copy of BS EN 2491:1997 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available online in electronic and print formats.
The utilization of Electroless Nickel-Phosphorus (EN) coatings has witnessed a staggering increase during the last two decades. Many outstanding characteristics of the EN coating method have generated a lot of interest in various industries including oil and gas, electronic, chemical, automotive, aerospace, and mining. Some of the highlighted characteristics of EN coatings are superior corrosion and wear resistance especially in environments containing H2S and CO2, superior mechanical properties, uniform coating thickness, excellent surface finish properties, superb adhesion characteristics, and wide range of thickness. The EN coating process is based on a redox reaction in which a reducing agent is oxidized and Ni+2 ions are reduced on the surface of the substrate materials. Once the first layer of Ni is deposited, it acts as a catalyst for the process. Consequently, a linear relationship between coating thickness and time usually occurs. If the reducing agent is sodium hypophosphite, the ...
11.2 Definitions. As used in 11.0 of this regulation, all terms not defined herein shall have the meaning given them in the November 15, 1990 Clean Air Act Amendments (CAAA), or in 2.0 of this regulation.. Airless Spray means a spray coating method in which the coating is atomized by forcing it through a small nozzle at high pressure. The coating is not mixed with air before exiting from the nozzle opening.. As supplied means the VOC and solids content of a coating or coating component as sold and delivered to the end user.. Automotive coating means a coating or coating component used or recommended for use in motor vehicle or mobile equipment refinishing, service, maintenance, repair, restoration, or modification, except metal plating activities. A reference to automotive refinishing or automobile coating included on the container, on a label affixed to the container or in sales, advertising, technical or product literature constitutes a recommendation for use in motor vehicle or mobile ...
Olexander R&D Inc. has developed proprietary coating methods and technology to uniformly and reproducibly coat neuro, coronary and peripheral stents. Coating services are provided for both device manufacturers and academic institutions for a variety of applications. We are experts on a wide range of coating technologies from the popular Sono-Tek ultrasonic atomizers to less known but effective tooling used for difficult chemistries with high viscosities. We also utilize a host of special handling devices that allow us to coat stents without flipping! Response to customer needs and requirements is paramount and we will provide services ranging from coating formulation (drug, no drug, polymer, solvent carrier) to stent crimping and sterilization. We have coating experience in processing both permanent (biostable) and biodegradable polymeric formulations on metallic and biodegradable stent substrates. We have coated a variety of stent sizes including small configurations for mouse and neuro ...
Outer Airseal Abradable Rub Strip Manufacture Methods and Apparatus | WEAR RESISTANT COATING | THERMAL BARRIER COATING, TURBINE MEMBER, GAS TURBINE, AND MANUFACTURING METHOD FOR THERMAL BARRIER COATING | METHOD FOR PRODUCING A HOT-DIP ALUMINUM-COATED STEEL WIRE | ZINC-BASED PLATED STEEL SHEET |
Excessive use of antibiotics in human and animal husbandry is known to promote the selection and development of bacterial strains showing resistance to antibiotics.. Pathogens cause millions of infections and worldwide economic damage every year. The current (gold standard) detection methods of bacterial, viral or suspect cells in samples are not optimal. The current method is time consuming. Rapid pathogenic tests are not sensitive enough to detect very low numbers of cells in fluids, without an initial separation and concentration procedure. CBMR is currently developing a real time sensor system, this is a peptide-based coating method that is able to bind particles to an increased extent. It works like a magnet that attracts iron particles. The sensor selectively extracts particles, thereby rendering a high concentrate with specifically sought-after properties.. Possible other applications for AMPs are to eradicate pathogens from body surfaces of colonized patients, or to coat medical ...
CdZnO thin films with different ratio of CdO and ZnO (3:1, 1:1, and 1:3) were grown on glass substrate using sol-gel spin coating method. The morphology of the
A new high-temperature soft soldering system has been developed by the Bureau of Mines for use on copper, copper alloys, and low-carbon steel; the method is applicable to automobile radiators and home appliances. The system uses a unique sacrificial metal coating method to promote spontaneous wetting and spreading of zinc and zinc alloy solders on metallic substrates. The 10-5 to 10-6-cm-thick,
Porous silica films with various porosities were prepared via a sol-gel method using a nonionic amphiphilic triblock copolymer F127 as the structure-directing agent. Doppler broadening of positron annihilation radiation (DBAR) spectra were collected for the prepared films using a variable energy slow positron beam. Different linear relationships between positron annihilation line shape parameters S and W are found for the as-deposited films and calcined ones, indicative of the decomposition of the copolymer porogen in the as-deposited films upon calcination. This also reveals the variation of positron annihilation sites as a function of F127 loading or porosity. Strong correlations between positronium 3γ annihilation fraction, S parameter and porosity of the mesoporous silica films with isolated pores are obtained, which may provide a complementary method to determine closed porosities of mesoporous silica films by DBAR. ...
0072] At least the base material layer 1, the adhesive layer 2, the metal layer 3 and the sealant layer 4 are laminated in this order to obtain a laminate. Specifically, a solvent containing the resin composition is first applied to at least one of the base material layer 1 and the metal layer 3. For the application of the solvent, a coating method such as an extrusion method, a gravure coating method or a roll coating method can be employed. Next, the solvent is evaporated. Next, the base material layer 1 and the metal layer 3 may be bonded and laminated to each other. Lamination of the base material layer 1 and the metal layer 3 with the resin composition interposed therebetween can be performed by, for example, a dry lamination method. Next, the resin composition situated between the base material layer 1 and the metal layer 3 is irradiated with an ionizing radiation or heated to cure the resin composition, thereby forming the adhesive layer 2. For example, when the base material layer 1 is ...
In this paper, thermal conductivity of porous silica film with porosity from 21 to 64% was studied comprehensively. The corresponded dielectric constant is
United States Patent Roger J. Walton; RoyceG. Cowan, both of Bartlesville, Okla. 654,683 July 20, 1967 Sept. 21, 1971 Phillips Petroleum Company Inventors Appl. No. Filed Patented Assignee COATING COMPOSITION COMPRISING POLYETHYLENE AND A VISBROKEN COPOLYMER OF ETHYLENE AND PROPYLENE 6 Claims, No Drawings US. Cl 260/897, 117/132, 117/155, 156/244, 156/334, 161/250, 260/4585 Int. Cl C08f 37/18 Field of Search 260/897 References Cited Primary Examiner-SamuelH. Blech Assistant E;aminer-C. .I. Seccuro Alt0rney Youngtan l Quigg ABSTRACT: A coating composition comprising alilend of a thermally cracked copolymer containing a major amount of propylene and a low density homopolymer of ethylene and a coating method. COATING COMPOSITION COMPRISING POLYETHYLENE AND A VISBROKEN COPOLYMER OF ETHYLENE AND PROPYLENE This invention relates to a new and improved coating composition, coated substrate articles produced using the coating composition, and a method for coating the substrate using the coating ...
The coating of thin films is applied in numerous fields and many methods are employed for the deposition of these films. Some coating techniques may deposit films at high speed; for example, ordinary printing paper is coated with micrometre-thick layers of clay at a speed of tens of meters per second. However, to coat nanometre thin films at high speed, vacuum techniques are typically required, which increases the complexity of the process. Here, we report a simple wet chemical method for the high-speed coating of films with thicknesses at the nanometre level. This soap-film coating technique is based on forcing a substrate through a soap film that contains nanomaterials. Molecules and nanomaterials can be deposited at a thickness ranging from less than a monolayer to several layers at speeds up to meters per second. We believe that the soap-film coating method is potentially important for industrial-scale nanotechnology.. ...
Dow Corning Corp. (Midland, MI) offers a new silver-metallic color for a proven Molykote brand anti-friction coating (AFC) to enhance design options for reducing friction, noise and wear on various automotive components. According to Dow, the new silver-colored Molykote D-709 anti-friction coating offers the same high-performance dry-film lubrication advantages as glossy black Molykote D-708 anti-friction coating, which is proven effective in such applications as brake pad clips, springs and pins. Each Molykote AFC is formulated with polytetrafluoroethylene (PTFE) solid lubricants, organic resin binder and carrier solvent. Properly applied to pretreated parts with various coating methods, these AFCs provide a clean, dry, slippery film as the lubricating solids fill in surface asperities and smooth roughness. Processing is cleaner with less dust and potential contamination. For more information, visit www.dowcorning.com/auto. ...
TY - JOUR. T1 - Low-flow limit in slot coating of dilute solutions of high molecular weight polymer. AU - Romero, O. J.. AU - Suszynski, W. J.. AU - Scriven, L. E.. AU - Carvalho, M. S.. N1 - Funding Information: The authors would like to thank Prof. Matteo Pasquali for discussions on viscoelastic flows and for the suggestions on the rheological characterization of the low concentration PEO solutions. This work was funded by CNPq (Brazilian Research Council, Grants 300242/98-0 and 467662/00-2) and by the Industrial Partnership for Research in Interfacial and Materials Engineering (IPRIME) of the University of Minnesota.. PY - 2004/4/5. Y1 - 2004/4/5. N2 - Slot coating is a common method in the manufacture of a wide variety of products. It belongs to a class of coating method known as premetered coating : The thickness of the coated liquid layer in principle is set by the flow rate fed to the die and the speed of the substrate moving past, and is independent of other process variables. Thus, ...
0064] In an embodiment of the system and corresponding method of the disclosed subject matter, the translation of the expandable member with respect to the positioning device is a ratio of 1:1. The expandable member can be inflated to or above nominal pressure to minimize any compressive force resulting from the pressurized fluid impacting the expandable member. By utilizing a positioning device that does not contact the surface of the expandable member, the risk of interfering or disturbing the coating fluid applied by the outlet can be minimized. Additionally, the absence of contact between the expandable member and the positioning device is advantageous in reducing the forces required to establish the relative movement between the expandable member and the outlet of the applicator. As previously noted, the coating method and system of the disclosed subject matter can be performed on a fully assembled medical device, e.g. balloon catheters, wherein the force required to rotate or otherwise ...
ZnO thin film of 80 nm thickness was deposited by the sol-gel spin coating method on SiO2/Si substrate and subsequently post-annealed at 500°C with a flow of oxygen for 60 min. Crystallographic structure of the sample was characterized by X-ray diffraction (XRD) method while a field emission scanning electron microscope (FESEM) was used to investigate the surface physical morphology and chemical composition. The sensitivity of the sample was tested to acetic acid vapor with different concentrations (20 ppm, 40 ppm, and 80 ppm) in the temperature range of 200-400 °C. The results showed that the ZnO thin film can be introduced as an acetic acid vapor sensor with a good reliability and detection limit of 20 ppm at the operating temperature of 320°C.
Highly porous 45S5 bioactive glass-based scaffolds prepared by foam replication method were coated with cellulose nanowhiskers by dip coating method. The obtained cellulose nanowhisker-coated scaffolds retained the high porosity and interconnected pore structure. The cellulose coating improved the mechanical
Several years ago it was reported that the entry of adenovirus particles could augment the uptake of polylysine-condensed DNA molecules ( Curielet al. 1991), a phenomenon similar to previously...
蛋白质芯片 Slide H 应用于微阵列定制3-Dthin film coating 三维薄膜涂层NEXTERIONSlide HSCHOTT launched NEXTERIONSlide H as a dedicated slide surface for print
Read Appearance of cell-adhesion factor in osteoblast proliferation and differentiation of apatite coating titanium by blast coating method, Journal of Materials Science: Materials in Medicine on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Template:Team:Cambridge/CAM_2011_TEMPLATE_HEAD}} =Isolating Reflectin and Making Thin Films= [[File:Cam crazy multilayer3.jpg , thumb , 250px , right , A PDMS on reflectin multilayer thin film]] Previous in vitro investigations of reflectin showed that it was possible to use a method called [[Team:Cambridge/Protocols/Flow_coating , flow coating]] to deposit a thin layer of reflectin onto a silicon substrate which would then demonstrate structural colour. We wanted to investigate using a different coating method - [[Team:Cambridge/Protocols/Spin_Coating , spin coating]] - and to try out different methods for [[Team:Cambridge/Protocols/Protein_Purification , protein purification]]. A polyhis-tagged variant of the protein was overexpressed and purified using a polyhis affinity column. Thin films were made by precipitating with either [[Team:Cambridge/Protocols/Acetone_Precipitation_of_Proteins , acetone]] or [[Team:Cambridge/Protocols/Ethanol_Precipitation_of_Proteins , ethanol]] and resuspending ...
Cadmium chalcogenides with appropriate band gap energy have been attracting a great deal of attention because of their potential applications in optoelectronic devices. In this work CdS thin films were deposited on p - type silicon substrates by sol - gel spin coating method at different substrate temperatures. The CdS deposited wafers were characterized by X‐ray diffraction method (XRD), Scanning Electron Microscopy (SEM), Photoluminescence spectroscopy (PL), Raman spectroscopy and Fourier Transform Infra - Red spectroscopy (FTIR). XRD analysis showed that the films have crystallites with classical hexagonal structure along (0 0 2) plane. The grain size was found to be in the range of 111.79 nm to 167.66 nm varying with the annealing temperature. The SEM micrograph of annealed CdS thin film showed uniform granular structures with very well defined grain boundaries all over the surface. The Raman spectra of the CdS films presented a well-resolved line at 300 cm−1 (1LO) and at 611 cm-1 (2LO). PL
The effects of annealing temperature and time on sol-gel Cu2ZnSnS4 thin film spin coated on soda lime glass substrate were investigated in terms of crystallinity, morphology, composition, optical and electrical properties. The annealing process was achieved in a tube furnace under N-2 gas flow and S vapor. The importance of this work is the detailed investigation of annealing temperature and its effect on the Cu2ZnSnS4 thin films that were prepared by the sol-gel spin coating method. The threshold temperature where the film begins to crystallize has been determined to be 465 degrees C. A temperature increase of 15 degrees C from 450 to 465 degrees C boosted the crystallite size and main peak intensities and optimized energy gap from 1.38 to 1.46 eV. In summary, the effect of the annealing temperature on the crystallinity of the films was studied in detail and the threshold temperature value which improved the crystallinity was determined. ...
The WO3 thin films have been synthesized on to the glass substrates by a simple and easy spin coating method at different deposition cycles and their sensor responses towards various concentrations of NO2 gas were investigated. The WO3 films were spin coated at a spinning rate of 2500-3000 rpm for 5, 10 and 15 deposition cycles, respectively. Then the films were annealed at 400 °C for 1 h in a furnace. The structural, morphological, optical and electrical properties of WO3 films were studied by different characterization techniques such as X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), FT-RAMAN Spectroscopy and electrical resistivity measurements by laboratory made two probe method respectively. It reveals a spherical grain - like morphology with a pure monoclinic phase of WO3. The FT-RAMAN spectra also confirm the pure monoclinic phase of WO3. The WO3-10 film sensor exhibits maximum gas sensitivity 21.93 and 102.4% to 5 and 100 ppm NO2 at 200 °C, respectively. The WO3-10 thin ...
Anatase nanocrystals were precipitated mainly at the surface of the silica-titania gel films with hot water treatment, whereas the addition of poly(ethylene glycol) (PEG) in the films led to the dispe
Thin film coating services provide the means to improve durability, lifespan, usability, performance, and a great many other factors for appliances and devices across virtually all industries. However, what are thin film coatings? What are the processes utilized to achieve those vital improvements?. Thin Film Deposition. All thin film coating services rely on a process called TFD, or thin film deposition. This is nothing more than the process of coating a substrate with another material. These coatings are generally very thin, ranging from 100 micrometers to just a few nanometers. Each layer builds up, eventually creating a coating of the desired thickness.. Techniques. There are several different techniques used in thin film coating services. One of the most common is called chemical deposition, or chemical vapor deposition. This process is used in the semiconductor industry today, but also many others. Another example is physical vapor deposition, of which thermal evaporation and sputtering ...
Highly porous 45S5 bioactive glass-based scaffolds were fabricated by the foam replica technique and coated with collagen by a novel method. After an initial cleaning step of the bioactive glass surface to expose reactive –OH groups, samples were surface functionalized by (3-aminopropyl)triethoxysilane (APTS). Functionalized scaffolds were immersed in a collagen solution, left for gelling at 37 °C, and dried at room temperature. The collagen coating was further stabilized by crosslinking with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccinimide (NHS). Applying this coating method, a layer thickness of a few micrometers was obtained without affecting the overall scaffold macroporosity. In addition, values of compressive strength were enhanced by a factor of five, increasing from 0.04 ± 0.02 MPa for uncoated scaffolds to 0.18 ± 0.03 MPa for crosslinked collagen-coated scaffolds. The composite material developed in this study exhibited positive cell (MG-63)
Hematite (alpha-Fe2O3) is a promising semiconductor as photoanode in solar hydrogen production from photoelectrolysis of water due to its appropriate band gap, low cost and high electrochemical stability in aqueous caustic electrolytes. Operation of such photoanode in a biased photoelectrochemical cell constitutes an anodization with consequent redox reactions at the electrode surface. alpha-Fe2O3 thin film photoanodes were prepared by simple and inexpensive dip coating method on fluorine doped tin oxide (FTO) glass substrate, annealed in air at 500 degrees C for 2 h, then electrochemically oxidized (anodized) in 1 M KOH at 500 mV for 1 min in dark and light conditions. Changes in structural properties and morphology of alpha-Fe2O3 nanoparticles films were investigated by XRD, Raman spectroscopy and a high resolution FESEM. The average grain size was observed to increase from similar to 57 nm for pristine samples to 73 and 77 nm for anodized samples in dark and light respectively. Broadening and ...
Recently a perovskite-based material with exceptional photovoltaic properties has been discovered: CH3NH3PbI3. Energy conversion efficiencies beyond 19% have been reported for solution-processed thin film solar cells based on this perovskite. Within our Renewable Energy Labs at Monash University we have a major research effort (, 10 researchers) focused on elucidating the fundamental working principle of these cells. In one of our recent studies we have developed a novel conformal coating method to produce highly efficient perovskite solar cells (Angewandte Chemie Int. Ed., DOI: 10.1002/anie.201405334, in press). Together with our external partners we are also working towards the development of tandem cell concepts and the large scale deployment of perovskite solar cells.. ...
We introduce a method that combines two-photon polymerization (TPP) and surface functionalization to enable the indirect optical manipulation of live cells. TPP-made 3D microstructures were coated specifically with a multilayer of the protein streptavidin and non-specifically with IgG antibody using polyethylene glycol diamine as a linker molecule. Protein density on their surfaces was quantified for various coating methods. The streptavidin-coated structures were shown to attach to biotinated cells reproducibly. We performed basic indirect optical micromanipulation tasks with attached structure-cell couples using complex structures and a multi-focus optical trap. The use of such extended manipulators for indirect optical trapping ensures to keep a safe distance between the trapping beams and the sensitive cell and enables their 6 degrees of freedom actuation.. © 2015 Optical Society of America. Full Article , PDF Article ...
In this paper we have successfully demonstrated a new micromachined fuel processing system including vaporizer, catalytic combustor and methanol steam reformer. This fuel processing system utilizes the thermal energy generated from the catalytic hydrogen combustion to heat up the entire system. For the first time, we have used carbon nanotubes as a supporting structure of Pt catalyst for combustion. The catalytic combustor could supply the energy to heat the reformer and maintain its working temperature. We have also developed a new coating method of reforming catalyst (Cu/ZnO/Al2 O3 ) and observed that adequate amount of hydrogen can be generated for PEMFC. We have successfully reported the feasibility of the proposed fuel processing system in each assembled component.. Copyright © 2006 by ASME ...
Eustis S, Krylova G, Smirnova N, Eremenko A, Tabor CE, Huang WY, EL-Sayed MA. Using silica films and powders modified with benzophenone to photoreduce silver nanoparticles. Journal of Photochemistry and Photobiology a-Chemistry. 2006 ;181:385-393. ...
Eustis S, Krylova G, Smirnova N, Eremenko A, Tabor CE, Huang WY, EL-Sayed MA. Using silica films and powders modified with benzophenone to photoreduce silver nanoparticles. Journal of Photochemistry and Photobiology a-Chemistry. 2006 ;181:385-393. ...
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Low-density polyethylene (LDPE) nanocomposites containing metal oxide nanoparticles are considered as promising candidates for insulating materials in future high-voltage direct-current (HVDC) cables. The significant improvement in dielectric properties compared with unfilled polymer is attributed to the large and active interface between the nanoparticles and the polymer. The nanoparticles may also initiate cavitation under stress and potential accelerated aging risks due to the adsorption and inactivation of the protecting antioxidants. This study is focused on the possibilities of achieving well-balanced performances of the polyethylene nanocomposites for HVDC insulation via tailoring the particle interface in the nanocomposites.. A facile and versatile surface coating method for metal oxide particles was developed based on silane chemistry. The developed method was successfully applied to 8.5 nm Fe3O4, 25 nm ZnO and 50 nm Al2O3 particles, with the aim to develop uniform coatings that ...
Optical coherence tomography (OCT) has recently attracted a lot of interest in the pharmaceutical manufacturing industry as a fast, contactless and non-destructive modality for quantifying thin film coatings on pharmaceutical dosage forms, which cannot be resolved easily with other techniques. In this topical review, we present an overview of the research that has been performed to date, highlighting key differences between systems and outlining major challenges ahead. ...
The researchers targeted their fluorescent protein to the liver - an organ particularly difficult to visualize because of its high blood content. Adenovirus particles containing the gene for iRFP were injected into mice. Once the viruses and their gene cargoes infected liver cells, the infected cells expressed the gene and produced iRFP protein. The mice were then exposed to near-infrared light and it was possible to visualize the resulting emitted fluorescent light using a whole-body imaging device. Fluorescence of the liver in the infected mice was first detected the second day after infection and reached a peak at day five. (See accompanying images.) Additional experiments showed that the iRFP fluorescent protein was nontoxic.. Our study found that iRFP was far superior to the other fluorescent proteins that reportedly help in visualizing the livers of live animals, said Grigory Filonov, Ph.D., a postdoctoral fellow in Dr. Verkhushas laboratory at Einstein, and the first author of the ...
The researchers targeted their fluorescent protein to the liver - an organ particularly difficult to visualize because of its high blood content. Adenovirus particles containing the gene for iRFP were injected into mice. Once the viruses and their gene cargoes infected liver cells, the infected cells expressed the gene and produced iRFP protein. The mice were then exposed to near-infrared light and it was possible to visualize the resulting emitted fluorescent light using a whole-body imaging device. Fluorescence of the liver in the infected mice was first detected the second day after infection and reached a peak at day five. (See accompanying images.) Additional experiments showed that the iRFP fluorescent protein was nontoxic.. Our study found that iRFP was far superior to the other fluorescent proteins that reportedly help in visualizing the livers of live animals, said Grigory Filonov, Ph.D., a postdoctoral fellow in Dr. Verkhushas laboratory at Einstein, and the first author of the ...
Surface finish must be appropriate for the design objectives. If the part roughness is much greater than the coating thickness, then the coating cannot work properly. In a sliding wear application, the peaks of the roughness can shear off, exposing substrate material. In some applications, a part should not be too smooth either. In these applications a mirror finish can lead to sticking caused by suction between parts. A micro-rough finish can be advantageous to break the vacuum between parts allowing air to penetrate. BryCoat has finishing capabilities to change surface finish in many cases ...
AGCs CYTOP has achieved extremely high transparency, of which the visible light transmission ratio is more than 95%, with an amorphous structure completely different from existing fluoropolymers. Since CYTOP can be dissolved with a special fluorinated solvent, it can be used in thin film coatings to a thickness of a few sub-microns. Furthermore, as it has the characteristics of fluoropolymers, CYTOP is attracting attention as an innovative material ...
The medicine can be stored at a safe place away from anyones reach except the user. The medicine because of its potential can be used unwisely and, for the reason, should be kept away from the reach of children, pets, and potential drug abusers. Avoid placing medicine in the presence of moisture. Moisture can damage the film coating of your medicine. Keep the medicine in its original container only. Always read the leaflet provided to you along with the medicine. It may contain some information regarding storage ...
Here, we sought to develop a cell culture surface conversion technique that would not damage living cells. An alginate thin film, formed on a glass plate by spin coating of sodium alginate solution and dipping into calcium chloride solution, was used to inhibit adhesion of cells. The film could be removed by ethylenediaminetetraacetate (EDTA) at any time during cell culture, permitting observation of cellular responses to conversion of the culture surface in real time. Additionally, we demonstrated the validity of the alginate thin film coating method and the performance of the film. The thickness of the alginate thin film was controlled by varying the rotation speed during spin coating. Moreover, the alginate thin film completely inhibited the adhesion of cultured cells to the culture surface, irrespective of the thickness of the film. When the alginate thin film was removed from the culture surface by EDTA, the cultured cells adhered to the culture surface, and their morphology changed. ...
We show that the high-energy ion irradiation of embedded metallic spherical nanoparticles (NPs) is not limited to their transformation into prolate nanorods or nanowires. Depending on their pristine size, the three following morphologies can be obtained: (i) nanorods, (ii) facettedlike, and (iii) almost spherical nanostructures. Planar silica films containing nearly monodisperse gold NPs (8â€100 nm) were irradiated with swift heavy ions (5 GeV Pb) at room temperature for fluences up to 5Ã-1013 cm-2. The experimental results are accounted for by considering a liquid-solid transformation of the premelted NP surface driven by the in-plane stress within the ion-deformed host matrix. This work demonstrates the interest of using ion-engineering techniques to shape embedded nanostructures into nonconventional configurations ...
2012) Characterization of copper cobolt oxide thin film coatings synthesized via sol-gel dip-coating method. In: 3rd International Chemical and Environmental Engineering Conference (ICEEC 2012), 21 - 23 December, Kuala Lumpur, Malaysia pp. 31-36. El-Harbawi, M., Shaaran, S.N.A.Bt.S., Ahmad, F., Wahi, M.A.A., Abdul, A., Laird, D.W. and Yin, C-Y ...
A series of polynomial heterocyclic compounds, known as crown ethers, can be synthesized with ethylene oxide. One method is the ... "Reaction of benzene with ethylene oxide to produce styrene" Hiraoka M. (1982). Crown Compounds. Their Characteristics and ... Triplex heterocyclic compounds". ChemAnalitica.com. 1 April 2009. Retrieved 21 September 2009. Collins J. L. "Epoxy compounds ... Ethylene oxide is an organic compound with the formula C 2H 4O. It is a cyclic ether and the simplest epoxide: a three-membered ...
Polyethers are compounds with more than one ether group. The crown ethers are examples of small polyethers. Some toxins ... Related compounds[edit]. Many classes of compounds with C-O-C linkages are not considered ethers: Esters (R-C(=O)-O-R′), ... Crown ethers Cyclic polyethers that are used as phase transfer catalysts. Polyethylene glycol (PEG) A linear polyether, e.g. ... Ethers are a class of organic compounds that contain an ether group-an oxygen atom connected to two alkyl or aryl groups. They ...
"Donggung, the Crown Prince's compound". Gyeongbokgung Palace. Archived from the original on 3 July 2013. Retrieved 13 April ... The Crown Prince's and Princesses' Quarters) Bihyeongak (비현각, The Study of the Crown Prince) Gyeonghoeru (경회루, The Royal ... Donggung (Korean: 동궁; Hanja: 東宮), located south of the Hyangwonjeong pavilion, were the living quarters for the crown prince ... The four main buildings of the compound were Jaseondang and Bihyeongak, Chunbang (the lecture hall, where the prince received ...
Stems branch from the crown and are densely hairy. Leaves are opposite and pinnately compound. Densely hairy leaflets are ... The stems radiate from the crown to a diameter of about 10 cm (3.9 in) to over 1 m (3 ft 3 in), often branching. They are ... Toxic compounds in the plant are known to cause liver damage when ingested at harmful dosages. When ingested, phylloerythrin ... and the root crown. The larvae tunnel in the pith where they feed and pupate. Adults of both species overwinter in plant debris ...
... forms complexes with crown ethers, cryptands and other ligands.[25] For example, 15-crown-5 has a high affinity for ... Intermetallic compounds. Sodium forms alloys with many metals, such as potassium, calcium, lead, and the group 11 and 12 ... Crown ethers, like 15-crown-5, may be used as a phase-transfer catalyst.[23] ... In a flame test, sodium and its compounds glow yellow[7] because the excited 3s electrons of sodium emit a photon when they ...
These compounds have also shown to have various biological effects and a synergistic effect when combined with the ion they ... Many synthetic ionophores are based on crown ethers, cryptands, and calixarenes. Pyrazole-pyridine and bis-pyrazole derivatives ... Some of these compounds have also been used as growth and production promoters in certain ruminants, such as cattles, and ... Even simple organic compounds, such as phenols, exhibit ionophoric properties. The majority of synthetic receptors used in the ...
... (or Bis(2-bromoethyl) ether) is an organobromine compound that is also an ether. It is used in the ... manufacture of pharmaceuticals and crown ethers. Kudryatsev, K. V.; Samofin, V. V. (January 1997). "New approach to the ... Chemistry of Heterocyclic Compounds. 33 (1): 106-111. doi:10.1007/BF02290756. S2CID 95541398. Hansen, Thomas K.; Jørgensen, ...
... was the first compound isolated from garlic as a phytoalexin, a product induced in plants by continuous stress. This compound ... Mayama, S.; Matsuura, Y.; Iida, H.; Tani, T. (1982). "The role of avenalumin in the resistance of oat to crown rust, Puccinia ... Such compounds can be implied in the hypersensitive response of plants. High levels of polyphenols in some woods can explain ... Allixin (3-hydroxy-5-methoxy-6-methyl-2-pentyl-4H-pyran-4-one), a non-sulfur-containing compound having a γ-pyrone skeleton ...
"Synthesis of anionic sandwich compounds: [Ti(η-C6H5R)2]- and the crystal structure of [K(18-crown-6)(µ-H)Mo(η-C5H5)2]". ... In a compound or ion, the sum of the oxidation states equals the total charge of the compound or ion. Fluorine in compounds has ... When it was realized that some metals form two different binary compounds with the same nonmetal, the two compounds were often ... Oxygen in compounds has OS = −2 but only when not bonded to oxygen (e.g. in peroxides) or fluorine. This set of postulates ...
... "crown" compounds with variety of ring sizes, a number of ether oxygens and substituent groups. Shortly after crown compounds, ... "Macrocyclic coordination compounds formed by condensation of metal-amine complexes with aliphatic carbonyl compounds" ... Classic examples are crown ethers and porphyrins. Macrocyclic ligands exhibit particularly high affinity for metal ions. ... In 1967 a new series of macrocyclic compounds was reported by Pederson, who synthesized a number of cyclic polyethers or " ...
... crown ethers and cryptates Functional activation of fluorinated compounds •Graphic Software (1982-2005): TOM/FRODO + "FIT" ... crown-ether and cryptates). After his Ph.D. (1978) he spent one year at ONERA for his military service. He was then hired by ...
that bind and pre-organize compounds, guiding them toward formation of a particular ring size. The crown ethers are often ... Pedersen, Charles J. (1988). "Macrocyclic Polyethers: Dibenzo-18-Crown-6 Polyether and Dicyclohexyl-18-Crown-6 Polyether". ... Zhichang Liu; Siva Krishna Mohan Nalluria; J. Fraser Stoddart (2017). "Surveying macrocyclic chemistry: from flexible crown ... Classical examples include the crown ethers, calixarenes, porphyrins, and cyclodextrins. Macrocycles describe a large, mature ...
The crown conformation (below)[4] is slightly less stable. Among the many compounds exhibiting the crown conformation ( ... but it is often a reference compound for saturated eight-membered ring compounds in general. ... the "Gold Book") (1997). Online corrected version: (2006-) "crown conformation". doi:10.1351/goldbook.C01422 ...
The tree crown is wide, with irregular, stratified ramification and only few thick branches. The bark can be gray to brown, in ... Leaves are compound, digitate and deciduous. Each leaf has five leaflets of variable size, the middle one being the largest. ... Among the various active phytochemicals in the tree is lapachol, a natural organic compound isolated from various other ...
Crinoids are supported by jointed stalks containing substantial compound ossicles. The crown has ossicles scattered throughout ... Pedicellariae are compound ossicles that articulate with other ossicles and protrude from the aboral (upper) surface of some ... Ossicles have a variety of forms including flat plates, spines, rods and crosses, and specialised compound structures including ...
They are propagated from seed or by cutting up the crowns. Botanic Garden and Botanical Museum Berlin-Dahlem. "Details for: ... Its roots contain thirteen compounds, some with antibacterial activity. Plants grow best under cool, moist conditions, and ...
It has a relatively short trunk and a deep, dense crown. The bark is pale gray and rough with droplets of resin. The leaves are ... a compound with 5-8 pairs of leaflets. The upper surface of the leaves is glossy. The flowers are yellow and about 5 mm across ...
Bakelite resin compounded with wire screen and linen, the Skullgard Helmet is still manufactured. MSA also produced a low-crown ...
... is a psilocybin mushroom which has psilocybin and psilocin as main active compounds. It is in the section ... According to Richard E. Schultes the Zapotec name translates as "Crown of thorns mushroom". Other sources give the Zapotec name ...
ISBN 978-145970988-1. Jackson, D. Michael (2012). "Chapter 1: The Crown in the Provinces: Canada's Compound Monarchy". In ... Canada and the Crown. McGill-Queen's University Press. pp. 141-161. ISBN 978-1553392040. Jackson, D. Michael (2013). The Crown ... Edward's Crown. The Canadian Heraldic Authority designed the badge, with the authorisation on 20 May 2011 of Governor General ... Victoria 1867, V.63 Heard, Andrew (2020). "Chapter 2: The Provincial Crown and Lieutenant Governors". In Jackson, D. Micahel ( ...
Jackson, Michael D.; Haverstock, Lynda (10 June 2010). "The Crown in the Provinces: Canada's Compound Monarchy" (PDF). Kingston ... "It is true there is only one Crown, but as regards Crown revenues and Crown property by legislation assented to by the Crown ... Crown wards), as well as the owner of all state lands (Crown land), buildings and equipment (Crown-held property), state-owned ... "divided crown," or a "compound monarchy". The arrangement provides that each of Canada's provinces are all sovereign of each ...
His son, the crown prince Liholiho, also lived here, taking the name Kamehameha II. In December 1819, Kalanimoku led an army ... The residential compound included the personal shrine, ʻAhuʻena heiau, of the King. The name means "temple of the burning altar ...
Coordination number Ligand cone angle Coordination geometry What Is A Coordination Compound? Zhao, Meng; Wang, Hai-Bo; Ji, ... Crown-ethers bind to polyamine complexes through their second coordination sphere. Polyammonium cations bind to the nitrogen ...
It is a naturally occurring compound found in rotting fruits and vegetables. It was also isolated from crown gall tumors. ... Opines are low molecular weight compounds found in plant crown gall tumors or hairy root tumors produced by pathogenic bacteria ... It is obtained from crown gall tumors. Saccharopine Although not found in crown gall tumors, saccharopine (epsilon-N-(L-glutar- ... Mannopine Mannopine (N-1-(D-mannityl)-L-glutamine) is found in crown gall tumors. It is the head member of the mannityl family ...
It typically is multi-trunked, with a crown as broad as it is high. Trees are long lived, with an estimated lifespan between ... The leaves are dark green, palmately compound with five (rarely seven) leaflets. Each leaflet is 6-17 cm (2.4-6.7 in) long, ...
V. Gutmann (1976). "Solvent effects on the reactivities of organometallic compounds". Coord. Chem. Rev. 18 (2): 225-255. doi: ... "Critical evaluation of stability constants and thermodynamic functions of metal complexes of crown ethers". Pure Appl. Chem. 75 ...
It has a cubic structure and is used in cathode ray tubes, crown glass, and catalysts. It is harmful to human skin and if ... McGraw-Hill, 2002, ISBN 0-07-049439-8 "Compounds of barium: barium (II) oxide". Web Elements. The University of Sheffield. 2007 ... It replaced lead(II) oxide in the production of certain kinds of glass such as optical crown glass. While lead oxide raised the ... ISBN 978-0-618-94690-7. "Barium Oxide (chemical compound)". Encyclopædia Britannica. Encyclopædia Britannica. 2007. Retrieved ...
... s can also be Zintl phase compounds, such as [K(18-crown-6)]2K2Pb9·(en)1.5. This is not a simple Zintl compound, but ... A plumbide can refer to one of two things: an intermetallic compound that contains lead, or a Zintl phase compound with lead as ... compounds". Journal of Alloys and Compounds. Elsevier. 442 (1-2): 169-171. doi:10.1016/j.jallcom.2006.08.351. Kleinke, Holger ( ... Plumbides can be formed when lead forms a Zintl phase compound with a more metallic element. One salt that can be formed this ...
Compound leaves are a characteristic of some families of higher plants, such as the Fabaceae. The middle vein of a compound ... Crown (botany). *Evolutionary history of leaves. *Evolutionary development of leaves *Leaf Area Index ... This is due to the presence of a compound called chlorophyll. This compound is essential for photosynthesis as it absorbs light ... A compound leaf has a fully subdivided blade, each leaflet of the blade being separated along a main or secondary vein. The ...
12-crown-4 for Li+, 15-crown-5 for Na+, 18-crown-6 for K+, and 21-crown-7 for Rb+) and cryptands due to electrostatic ... Compounds with the group 13 elementsEdit. The intermetallic compounds of the alkali metals with the heavier group 13 elements ( ... CompoundsEdit. The alkali metals form complete series of compounds with all usually encountered anions, which well illustrate ... Caesium compounds are rarely encountered by most people, but most caesium compounds are mildly toxic. Like rubidium, caesium ...
The most common type of optical glass is crown glass, which has an index of refraction of about 1.52. An optimal single-layer ... See, for example, US Patent 5,091,244.) Absorbing ARCs often make use of unusual optical properties exhibited in compound thin ... MgF2 on a crown glass surface gives a reflectance of about 1%, compared to 4% for bare glass. MgF2 coatings perform much better ...
"Capirossi crowned king of Catalunya". crash.net. June 15, 2003.. *^ "Gibernau defeats Rossi in sizzling German duel". motogp. ... down after making an unscheduled pit stop-having run as high as fifth during the race-after losing grip on his softer-compound ...
"The Crown Property Bureau (in Thai). 2007. Archived from the original on 9 August 2007. Retrieved 25 September 2007.. (พระราชบั ... a compound of Bhūmi (भूमि), meaning "Land"; Bala (बल), meaning "Strength" or "Power"; Atulya (अतुल्य), meaning "Incomparable"; ... Honorary Recipients of the Order of the Crown of the Realm. *Knights Grand Cross with Collar of the Order of Merit of the ... His only son and the next in line to rule the kingdom, Crown Prince Maha Vajiralongkorn, presided over the bathing ritual at ...
The name was given to Désirée Clary not at birth but when she was crowned Crown Princess of Sweden in 1810. ... Slavic names are often of a peaceful character, the compounds being derived from word roots meaning "to protect", "to love", " ... Regnal names and religious or monastic names are special given names bestowed upon someone receiving a crown or entering a ...
The leaves are compound, the bark is whitish or gray, and it has small, yellowish or purplish flowers. Flowers and fruits ... Lannea coromandelica in the family Anacardiaceae is a medium-sized to large deciduous tree with a spreading crown and stout ... Olax in the family Olacaceae is a climber with compound, dark-green leaves and white bark. This is the most extensively used ...
"Red-crowned Parrot". American Bird Conservancy. Retrieved 6 January 2019.. *^ Benham, W. B. (1906). "Notes on the Flesh-eating ... Many species in the Americas, Africa, and Papua New Guinea consume clay, which releases minerals and absorbs toxic compounds ... Chestnut-fronted macaws, yellow-crowned amazons, and dusky-headed parakeets at a clay lick in Ecuador ... but the Pacific lorikeets in the genera Vini and Phigys can ruffle the feathers of the crown and nape, and the red-fan parrot ( ...
They have an ample bill with a relatively high culmen, helping impart a relatively narrow and high crowned facial look, ... by inadvertent poisonings and epidemics of nesting failures due to various manmade chemical pesticides and organic compounds, ... which is usually darker on the crown, underparts and flanks. The legs and cere at this young nestling age can range from ...
Ayittey, George B.N. (1999). "How the Multilateral Institutions Compounded Africa's Economic Crisis". Law and Policy in ... thousands of Black Loyalists were resettled by the Crown in Canada afterward, such as Thomas Peters. In addition, an estimated ...
Consider this matter in the context that natural gas producers generally buy mineral rights from the Crown but must negotiate ... new regulations enacted by the Alberta government in 1960 forced the industry to reduce its emissions of such sulphur compounds ...
Pamela Bianca Manalo, a flight attendant for Philippine Airlines before she was crowned Miss Philippines-Universe in 2009 ... which contain compounds that may act as hormone disruptors and increase the risk of some cancers.[58] ...
Ground-level ozone, or smog, is created by chemical reactions between NOx and volatile organic compounds (VOCs) in the presence ...
This inorganic compound-related article is a stub. You can help Wikipedia by expanding it.. *v ... Zinc phosphate cement is used for cementation of inlays, crowns, bridges, and orthodontic appliances and occasionally as a ... Zinc phosphate (Zn3(PO4)2) is an inorganic chemical compound used as a corrosion resistant coating on metal surfaces either as ...
The crown, by tradition, was woven from grasses and other plants taken from the actual battlefield.[33] Sulla then returned to ... rather than the common compound interest which so easily bankrupted the debtors. Also the interest rates were to be agreed ... the men who had hailed him Imperator in the Field and who had awarded him the Grass Crown (Corona Graminea).[44] His soldiers ... He was even awarded the Grass Crown for his command in the latter war. ...
... and Rhode Island was the first of the Thirteen Colonies to renounce its allegiance to the British Crown on May 4, 1776.[11] It ... compounded by the fact that Brown University is the city's second-largest employer.[80] ...
The mulberry plants allowed to grow tall have a crown height of 1.5 to 1.8 m (5 to 6 ft) from ground level and a stem girth of ... are Influenced by Volatile Compounds from Its Mulberry Host (Morus alba L.)". Insects. 7 (2): 19. doi:10.3390/insects7020019. ... and allowed to grow with a maximum of 8-10 shoots at the crown. The leaves are harvested three or four times a year by a leaf- ...
They excrete nitrogen as the complex nitrogenous waste compound uric acid, and related derivatives.[64] Uric acid's low ... "King of the Roxy seeks another crown at Ellis". Evansville Courier & Press. Retrieved 17 March 2017 ... Inositol Tetrakisphosphate: The Major Phosphate Compound in the Erythrocytes of the Ostrich (Struthio camelus camelus)". ... Animals must excrete this in the form of nitrogenous compounds.[64] Ostriches are uricotelic. ...
New York: Crown Publishers, Inc.. *↑ Friedlander Jr., Blaine (November 20, 2003). "CU scientists tout the health punch of cocoa ... Flavanols are also thought to help reduce blood platelet buildup and can balance levels of compounds called eicosanoids, which ... Morton, Frderic and Marcia (1986). Chocolate, An Illustrated History, Crown Publishers, INC. ISBN 0-517-55765-7 ... "Ahhhh! Better than red wine or green tea, cocoa froths with cancer-preventing compounds, Cornell food scientists say". Cornell ...
As a key province, but also the 'crown domain' where the emperors succeeded the divine Pharaohs, Egypt was ruled by a uniquely ... To further compound the whole situation, Jews, who themselves were very Hellenized overall, had their own communities, separate ...
2) Reaction of this diimine with a coupler compound (more detail below). 3) Oxidation of the resulting compound to give the ... There are also newer coloring techniques such as ombré, in which hair is dark on the crown and bit by bit becomes lighter ... The primary intermediates are aromatic para compounds, such as 1,4-diaminobenzene or 4-aminophenol. The coupler compounds ( ... Couplers are chemical compounds that define the color of the hair dye. Shown here are three red couplers (A, B, C), two yellow- ...
a b c d J. Bastianich & D. Lynch Vino Italiano pg 121, 280-281, 312-13 Crown Publishing 2005 ISBN 1-4000-9774-6 ... This purer form of charcoal obtained by the dry distillation of carbon compounds (such as wood or peat) has a high ratio of ... The length of maceration (where the must is in contact with the skin) will influence how much of these compounds are extracted ... The stability of these aromas is very dependent on the amount of anthocyanins and other phenolics that protect these compounds ...
The largest bats are the flying foxes and the giant golden-crowned flying fox, Acerodon jubatus, which can weigh 1.6 kg (3 1⁄2 ... compound the risk of zoonotic transmission.[176] Bats are implicated in the emergence of severe acute respiratory syndrome ( ... The largest bats are a few species of Pteropus megabats and the giant golden-crowned flying fox, (Acerodon jubatus), which can ...
Thus, the Crown is not subject to the TV Licensing regime."[82] Prison authorities can assert for Crown immunity to allow ... pensioners and the economically inactive and that the difficulties they have in paying the licence fee are compounded by the ... "Crown Office and Procurator Fiscal Office. Retrieved 21 July 2014.. *^ a b c "TV Licence - Fiscal Fines". COPFS. Retrieved 21 ... Enquiry officers make around four million visits a year to households in the UK and Crown dependencies.[119] Each week an ...
The bacterial virulence genes expression of approximately 10 operons is activated by perception of phenolic compounds such as ... thus forming the crown gall tumors typically induced by Agrobacterium tumefaciens infection. Whereas Agrobacterium rhizogenes ...
... include MY 2002 to 2006 Toyota Crown, Crown Majesta, Harrier, Mark X, Alphard, Kluger and Lexus GS350, IS250 and IS350. The ... The difficulty of investigations is compounded by the fact that driver error can be a possibility in certain cases. The Wall ... July 5, 2010 - World: 270,000 Crown and Lexus models for valve springs with potential production issue.[42] ... On July 7, 2010, Toyota recalled 270,000 Lexus and Crown vehicles worldwide for improperly manufactured valve springs. ...
... preshaped panels ply are bent into compound curves and sewn together. Little or no framework or longitudinal wood is used. This ...
The ancient Greeks, as recorded in Euripides's play The Phoenician Women, placed a crown of flowers on the head of the deceased ... This close relationship compounds the negative effects of extinction. The extinction of either member in such a relationship ...
Franz Ferdinand had become heir presumptive to the throne, after the suicide of his cousin Crown Prince Rudolf in 1889 and the ... Franz Ferdinand refused to renounce Sophie to marry equally and beget an heir to the throne, compounding the scandal ... attempting to proclaim his wife empress-queen or declaring their future children dynasts and thus eligible to inherit the crown ...
amide-lithium halide compounds , anionic crowns, salt effect, lithium, halides, inverse crowns, Chemistry, Medicine(all). ... Mixed lithium amide-lithium halide compounds : unusual halide-deficient amido metal anionic crowns ... Mixed lithium amide-lithium halide compounds : unusual halide-deficient amido metal anionic crowns. Angewandte Chemie, 50 (36 ... Surprisingly, a novel class of mixed amido-halide macrocyclic complexes, namely metal anionic crowns (MACs) was revealed (see ...
Crown Ethers and Analogous Compounds Published: 2nd June 1992 Editor: M. Hiraoka ...
Coldwater Crown: The Sea. - Compounded. ~ Compounded: Chemical Chaos. ~ Compounded: Geiger Expansion. ~ Compounded: ...
Other examples include dialkyl ethers of mono and oligo alkylene glycols; "crown" ethers; tertiary amines such as ... 5,496,940 teaches organolithium compounds containing a cyclic amino group. These compounds contain a lithium alkyl moiety that ... Polymers, elastomeric compounds and products thereof, derived from novel amine compounds containing side-chain organolithium ... One preferred method of preparing an initiator compound according to the present invention is to react a cyclic amine compound ...
A set of four hybrid host-guest complexes based on the inorganic crown ether analogue [H12W36O120]12− ({W36}) have been ... Compounds 1-4 were structurally characterised by single-crystal X-ray diffraction, elemental analysis, flame atomic absorption ... Tanmay Chatterjee, Monima Sarma, Samar K. Das, Polyoxometalate associated ion-pair solid based on a crown ether inclusion ... directs the solid-state arrangement of compounds 1-4. Guest cations with a hydrophobic phenyl tail result in an antiparallel ...
Resilient rubber compound reduces the effects of fatigue. Raised design provides superior traction. Yellow ramps for increased ... Resilient rubber compound reduces the effects of fatigue. Raised design provides superior traction. Yellow ramps for increased ...
Crown Ethers and Analogous Compounds Product Type: Book. Edition: 1. Volume: 45 ...
8. Chlorinated hydrocarbons to cobalt and cobalt compounds --. vol. 9. Coffee to crown ethers --. vol. 10. Cyrogenic technology ... 8. Chlorinated hydrocarbons to cobalt and cobalt compounds -- vol. 9. Coffee to crown ethers -- vol. 10. Cyrogenic technology ... Vanadium and vanadium compounds to wastewater --. vol. 39. Water to zirconium and zirconium compounds --. vol. 40. Index volume ... Vanadium and vanadium compounds to wastewater -- vol. 39. Water to zirconium and zirconium compounds -- vol. 40. Index volume. ...
Polyethers are compounds with more than one ether group. The crown ethers are examples of small polyethers. Some toxins ... Related compounds[edit]. Many classes of compounds with C-O-C linkages are not considered ethers: Esters (R-C(=O)-O-R′), ... Crown ethers Cyclic polyethers that are used as phase transfer catalysts. Polyethylene glycol (PEG) A linear polyether, e.g. ... Ethers are a class of organic compounds that contain an ether group-an oxygen atom connected to two alkyl or aryl groups. They ...
3. Ketonands, novel ketonic crowns of polyoxo[1n]orthocyclophane constitution. Woo Young Lee, Chang Hee Park, Hyo-Jung Kim and ... Solid-state reactions of iridium(I)-1,5-cyclooctadiene compounds with CO: synthesis of cationic (1,5-cyclooctadiene) ... A novel star-shaped crown ether: spontaneous isomerization of a macrocyclic polyketone to a spirobicyclic polyketal. Woo Young ... Synthesis from diamine of mono- and dinuclear cyclopentadienyliron dicarbonyl carbamoyl compounds. Crystal and molecular ...
... compound ~ ???????????? ???? cover ??????? ???? ; ?????? ???? crown ~ ?????? crystal ~ ????????, ??????????? ???? daylight ...
Associations of Crown-Rump Length with chemical compounds. *Among 250 laboratory-born bonnet macaques living in social groups ... Chemical compound and disease context of Crown-Rump Length. *We have previously shown that administration of progesterone ... Disease relevance of Crown-Rump Length. *In the current studies, indices of somatic growth [body weight, crown-rump length (CRL ... Biological context of Crown-Rump Length. *Using indwelling crown-rump length (CRL)-measuring devices, the growth rate of sheep ...
Macrocyclic compounds analogous to CROWN ETHERS but which lack any OXYGEN atoms. ... Intraoral Imaging at Clinical Crown Lengthening. Crown lengthening surgery is done when a tooth needs to be fixed with a crown ... Crown-rump Length. In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered ... We report the synthesis of five novel crystals [(4-BrAni+)(DB[18]crown-6)]2[SMo12O402-]·2CH3CN (1), [(4-BrAni+)(B[18]crown-6)]2 ...
Fire adaptations: Deerbrush recovers from fire by establishing from seed and by sprouting from the root crown [12,22,30,37,38, ... Flowers are borne in compound clusters. The fruit is a sticky capsule containing small, obovoid seeds [31,59]. Nitrogen-fixing ... Maximum age attained by roots and root crowns has not been determined, but life span of these organs can be more than 35 years ... Tall shrub, adventitious buds and a sprouting root crown. Ground residual colonizer (on site, initial community) Fire ...
Journal of Alloys and Compounds A new class of task-specific ionic liquids (TSILs) based on the covalent attachment of ... The effect observed is shown to vary with the hydrophobicity of the crown ether. Water-soluble crown ethers enhance the ... a result of the exclusion of the crown ether from the resin phase and the formation of cation-crown complexes in the solution ... Effect of crown ethers on the ion-exchange behavior of alkaline earth metals. Toward improved ion-exchange methods for the ...
Crown ethers are heterocyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ... Structures of some common crown ethers. Structures of common crown ethers: 12-crown-4, 15-crown-5, 18-crown-6, dibenzo-18-crown ... Aza-crowns. "Aza-crowns" consist of crown ethers wherein an ether oxygen has been replaced by an amine group. A well-known ... For example, 18-crown-6 has high affinity for the potassium cation, 15-crown-5 for the sodium cation, and 12-crown-4 for the ...
Leaf: palmately or pinnately dissected or compound, alternate, forming a terminal crown; base sheathing; petiole generally long ... Inflorescence: within crown, < leaves; flowers borne in 3s with 1 pistillate flower flanked by 2 staminate, also staminate ... Leaf: pinnately compound; petiole generally unarmed, bases not persistent on trunk; leaflet margins folded downward. ... compound, or 3, simple, ovaries superior, if 1, generally 3-chambered, styles free or fused. Fruit: generally a drupe, fleshy ...
Our compound feed plants consist of numerous individual machines, which are manufactured by KAHL. Our crown expander OEK plays ... Crown Expander Two steps with one machine: The crown expander not only expands a product, but shapes it at the same time. This ... Furthermore, existing expanders can easily be converted to crown expanders. With our crown expander you will work much more ... Compound Feed Plants. From weighing to proportioning, mixing, conditioning, expanding and extruding - AMANDUS KAHL not only ...
Crown J, *Stunell H, *et al. . Caspase 3 in breast cancer. Clin Cancer Res 2003;9:738-42. ... After treatment with S-PAC-1, cells were washed to remove compound and cultured in growth medium without compound. Cell death ... Discovery and Canine Preclinical Assessment of a Nontoxic Procaspase-3-Activating Compound. Quinn P. Peterson, Danny C. Hsu, ... S-PAC-1 is the first compound in the PAC-1 class (and the first small-molecule activator of procaspase-3) to be evaluated in a ...
Propose a synthesis for 18-crown-6. If a base is used in your synthesis, does it make a difference whether it i... ... 19 - The compound Pb3O4 (red lead) contains a mixture...Ch. 19 - Tin forms compounds in the +2 and +4 oxidation...Ch. 19 - The ... 19 - Lead forms compounds in the +2 and +4 oxidation...Ch. 19 - Many structures of phosphorus-containing compounds...Ch. 19 - ... 19 - Sulfur forms a wide variety of compounds in which...Ch. 19 - Halogens form a variety of covalent compounds with...Ch. 19 ...
This should lead to the discovery of new agrobacteria and pTi encoding for the biosynthesis of new opine compounds. Persistence ... The crown gall is a plant disease caused by bacteria belonging to the genus Agrobacterium. It is presently the main bacterial ... The long term objective of the project is to decrease the prevalence of crown gall in nurseries to below a reasonable threshold ... identify and monitor the fate of the causative agent and to critically view the methods that could be used to control crown ...
Create a new look in a room by installing crown molding to bridge the gap between walls and ceiling. Its easier than you think ... Fill nail holes with wood filler or patching compound, then sand. Use caulk or wood filler for small gaps at corners. Touch up ... How to Transform a Room with Crown Molding. Create a new look in a room by installing crown molding to bridge the gap between ... Crown Molding Tips and Tricks. *Keep a consistent scale from floor to ceiling. Although its tempting to install an impressive ...
Leaves splitting to be palmately or pinnately dissected or compound, alternate, forming a terminal crown, large; base sheathing ... Inflorescence within crown, , leaves. Flower: perianth yellowish; calyx 3-lobed; petals generally free; ovaries 3, free, simple ... Leaves pinnately compound; bases persistent on trunk; leaflets folded longitudinally with margins upward, lower sometimes ...
This category presents Compound Microbial Fertilizer, Microbial Fertilizer, from China Bio Fertilizer suppliers to global ... Compound Mircrobial Fertilizer Min. Order: 50 Tons Compound Mircrobial Fertilizer Composition: Quantity of effect microbe , ... Organic and Inorganic Compound Fertilizer for Vegetables and Fruits FOB Price: $400 - $410 / Ton Min. Order: 18 Tons ... Organic and Inorganic Compound Fertilizer for Crop and Vegetables FOB Price: $435 - $460 / Ton Min. Order: 18 Tons ...
9 Porosity in Metal-Organic Compounds 200. Alexander Schoedel and Omar M. Yaghi ... 17.5 Development of synthetic cation channels based on crown ethers 367. 17.6 Development of synthetic anion channels based on ... 16.2 Dynamic control of crown ether functions by chemical and physical signals 347 ...
A Crown Ether as Template for Microporous and Nanostructured Uranium Compounds Next article in issue: A Crown Ether as Template ... nitroalkenes is achieved by combining the excellent asymmetric induction ability of o-TMS-protected diphenylprolinol compounds ...
Computer simulations predict that compounds made of oxygen and titanium atoms form cages that can host electrons in their ... We found that these Ti-rich Ti-O compounds are primarily zero-dimensional electrides with excess electrons confined in the atom ... Ellaboudy, A., Dye, J. L. & Smith, P. B. Cesium 18-crown-6 compounds. A crystalline ceside and a crystalline electride. J. Am. ... Peng, F., Miao, M., Wang, H., Li, Q. & Ma, Y. Predicted lithium-boron compounds under high pressure. J. Am. Chem. Soc. 134, ...
CAPPA Seminar: BC Crown Royalties February 21, 2018 @ 8:30 am - 4:00 pm ... The GPA has a issued a revised standard GPA-2145-16 - Table of Physical Properties of Hydrocarbons and Other Compounds ... Table of Physical Properties of Hydrocarbons and Other Compounds effective 1 January 2017. This latest standard now becomes GPA ...
Compound Compensating Pendulum-. Centrifugal Pendulum-. Antique Clock Escapement-. Crown Tooth Escapement-. Double Ratchet- ... Tandem Compound Vertical Engine-. Compound Engines-. Compound Yacht Engine- High-Speed Tandem Compound Engine-. Modern High- ... HIGH-SPEED TANDEM COMPOUND ENGINE-. "Harrisburg model. TANDEM COMPOUND ENGINE-. Phoenix Iron Works model. A direct pipe ... Four-Pole Compound Generator-. Electric Gener-ator Construction-. Consequent-Pole Compound Generator-. Triple-Expansion Engine ...
Wallach received the Nobel Prize in 1910 for his work on alicyclic compounds. His other honours included Honorary Fellowships ... crowned with the highest possible distinction. ... Otto Wallach - Nobel Lecture: Alicyclic Compounds The Nobel ... his work on azo dyes and diazo compounds, and many others. They all denote his practical skill: like Emil Fischer and Adolf von ... differences between the structure of these compounds. A year later he could establish that many of them were indeed identical. ...
  • A set of four hybrid host-guest complexes based on the inorganic crown ether analogue [H 12 W 36 O 120 ] 12− ({W 36 }) have been isolated and characterised. (wiley.com)
  • Supramolecular self-assembly for designing non-centrosymmetric crystals based on Keggin polyoxometallates and crown ether. (bioportfolio.com)
  • Ethers are a class of organic compounds that contain an ether group -an oxygen atom connected to two alkyl or aryl groups. (wikipedia.org)
  • Polyethers are compounds with more than one ether group. (wikipedia.org)
  • The transfer of strontium ion from acidic nitrate media into a series of 1-alkyl-3-methylimidazolium-based room-temperature ionic liquids containing dicyclohexano-18-crown-6 is shown to proceed via cation-exchange, in contrast to conventional solvents such as alkan-1-ols, in which extraction of a strontium nitrato-crown ether complex is observed. (osti.gov)
  • In chloroform solutions also containing a crown ether (CE), water molecules strongly associate with the IL ions, and there is rapid proton exchange between these bound water molecules and hydronium associated with the CE. (osti.gov)
  • Crown ethers are heterocyclic chemical compounds that consist of a ring containing several ether groups. (newworldencyclopedia.org)
  • The term "crown" refers to the resemblance between the structure of a crown ether bound to a cation , and a crown sitting on a head. (newworldencyclopedia.org)
  • The first number in the name of a crown ether refers to the number of atoms in the cycle, and the second number refers to the number of those atoms that are oxygen . (newworldencyclopedia.org)
  • The denticity of the polyether influences the affinity of the crown ether for various cations. (newworldencyclopedia.org)
  • In 1967, Charles Pedersen, a chemist working at DuPont, discovered a simple method of synthesizing a crown ether when he was trying to prepare a complexing agent for divalent cations. (newworldencyclopedia.org)
  • Aza-crowns" consist of crown ethers wherein an ether oxygen has been replaced by an amine group. (newworldencyclopedia.org)
  • Mixed amine-ether crowns are also known. (newworldencyclopedia.org)
  • a) Crown ether-steroid amphiphile. (accessscience.com)
  • b) Crown ether bolaamphiphile. (accessscience.com)
  • Each tholin was dissolved in dichloromethane at 2 mg/ml with 2mM 18-Crown-6 ether. (nasa.gov)
  • The marked peaks in this figure, with M = 18-Crown-6 ether, correspond to two different series (triangles: NH 2 -(CH 2 ) n -CH 2 CN, where n=0 is the first in the series, and circles: NH 2 -(CH 2 ) n -CH(CN) 2 ,where n=2 is the first in the series). (nasa.gov)
  • The results of a similar experiment with the Smith tholin are shown in Figure 4, where several of the crown ether adduct peaks are labeled with an asterisk. (nasa.gov)
  • Complexation with 18-Crown-6 ether leads to the identification of primary amine functionality in both Tholin mixtures. (nasa.gov)
  • 2-Bromoethyl ether (or Bis(2-bromoethyl) ether) is an organobromine compound that is also an ether. (wikipedia.org)
  • A new family of aza-ether based compounds including linear, multi-branched and aza-crown ethers is provided. (osti.gov)
  • When added to non-aqueous battery electrolytes, the new family of aza-ether based compounds acts as neutral receptors to complex the anion moiety of the electrolyte salt thereby increasing the conductivity and the transference number of LI.sup. (osti.gov)
  • Surprisingly, a novel class of mixed amido-halide macrocyclic complexes, namely metal anionic crowns (MACs) was revealed (see picture: Li pink, N yellow, Cl green, Si orange, C black). (strath.ac.uk)
  • Macrocyclic compounds analogous to CROWN ETHERS but which lack any OXYGEN atoms. (bioportfolio.com)
  • Crown ethers are not the only macrocyclic ligands that have affinity for the potassium cation. (newworldencyclopedia.org)
  • In the newly prepared complexes the crown moiety oxygen atoms of the macrocyclic host did not generally interact with metal ions, whereas the two amino groups of the ligand always did. (hindawi.com)
  • Crown ethers strongly bind certain cations, forming complexes . (newworldencyclopedia.org)
  • Apart from its high affinity for potassium cations, 18-crown-6 can also bind to protonated amines and form very stable complexes in both solution and the gas phase. (newworldencyclopedia.org)
  • Those protonated amino groups can bind to the cavity of 18-crown-6 and form stable complexes in the gas phase. (newworldencyclopedia.org)
  • The compounds are ionophoric (form stable complexes with cations). (sigmaaldrich.com)
  • The crown of clean pinnately compound leaves forms an upright oval. (tamu.edu)
  • The plants are distinguished by crowns of large pinnately compound leaves and by large cones . (britannica.com)
  • Citing earlier work on the dissolution of potassium in 16-crown-4, [2] [3] he realized that the cyclic polyethers represented a new class of complexing agents that were capable of binding alkali metal cations. (newworldencyclopedia.org)
  • Two macro-cyclic compounds viz. (omicsonline.org)
  • A breakthrough towards this goal occurred when Charles Pedersen in the 1960's prepared cyclic compounds that contained carbon and oxygen atoms in rings of 18 up to 40 atoms. (nobelprize.org)
  • It was shown that parts of the organic guest cation protrude from the central binding cavity and the nature of this protruding organic "tail" directs the solid-state arrangement of compounds 1 - 4 . (wiley.com)
  • As for other organic compounds, very common ethers acquired names before rules for nomenclature were formalized. (wikipedia.org)
  • The fields of organic synthesis, phase transfer catalysts, and other emerging disciplines benefited from the discovery of crown ethers. (newworldencyclopedia.org)
  • Ethylene oxide is an organic compound with the formula C 2H 4O. (wikipedia.org)
  • The metal cation is the guest and the organic structure is the host in (a) 18-crown-6 complex of potassium cation (K+) and (b) sodium (Na+) complexed by a calix[4]arene. (accessscience.com)
  • Other organic compounds have been prepared which transport ions through biological membranes. (nobelprize.org)
  • This allows for the selective detection of primary amine functionality in a complex mixture of organic compounds. (nasa.gov)
  • The harnessing of natural processes for volatile organic compounds (VOC) and odor control. (ca.gov)
  • An Adaptive Indoor Air Quality Control Scheme for Minimizing Volatile Organic Compounds Density. (uni-trier.de)
  • Compounds 1 - 4 were structurally characterised by single-crystal X-ray diffraction, elemental analysis, flame atomic absorption spectroscopy, FTIR and bond valence sum calculations. (wiley.com)
  • The structures of all coordination compounds were determined via single crystal X-ray diffraction (XRD). (rsc.org)
  • The resulting cations often form salts that are soluble in nonpolar solvents, and for this reason crown ethers are useful in phase transfer catalysis. (newworldencyclopedia.org)
  • The opposite case was observed in solution as the exchange of calcium cations between [18]crown-6 and 1,2-disila[18]crown-6 ( 2 ) was studied via dynamic proton nuclear magnetic resonance (NMR) spectroscopy. (rsc.org)
  • The anionic electrons in the electrides are markedly different from the delocalized electrons in metals or entirely localized electrons in the covalent compounds, since they do not bond to any atoms and behave like "quasi" atoms in the lattice. (nature.com)
  • In all these compounds, whether anionic, cationic or neutral, the roles of Ar are quite different, yet all of them are weakly bound (if observable, they are only stable in low-temperature matrices) and Ar has a positive partial charge, i.e. donates electrons during the formation of the compounds. (nature.com)
  • Pinnately-compound, deciduous leaves are 12-20 in. (wildflower.org)
  • Pinnately-compound, deciduous leaves occur on bright-red leaf stalks and turn golden-orange in the fall. (wildflower.org)
  • For example, 18-crown-6 has high affinity for the potassium cation, 15-crown-5 for the sodium cation, and 12-crown-4 for the lithium cation. (newworldencyclopedia.org)
  • The mechanism of antifungal action of these coordination compounds is probably connected to an inhibition of lanosterol- 14- α -demethylase, a metallo-enzyme playing a key role in sterol biosynthesis in fungi, bacteria and eukariotes. (hindawi.com)
  • The crown of the tree is open and round-topped. (drugs.com)
  • 5 , 8 In one report, 45 volatile compounds were isolated from whole green walnuts. (drugs.com)
  • The Gas Producers Association, now known as the GPA Midstream Association ( www.gpaglobal.org ), has a issued a revised standard GPA-2145-16 - Table of Physical Properties of Hydrocarbons and Other Compounds effective 1 January 2017. (cappa.org)
  • Here you can see the latest Crown Bioscience Announcing 2017 Board Directors Election Results articles that have been published worldwide. (bioportfolio.com)
  • We have published hundreds of Crown Bioscience Announcing 2017 Board Directors Election Results news stories on BioPortfolio along with dozens of Crown Bioscience Announcing 2017 Board Directors Election Results Clinical Trials and PubMed Articles about Crown Bioscience Announcing 2017 Board Directors Election Results for you to read. (bioportfolio.com)
  • In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Crown Bioscience Announcing 2017 Board Directors Election Results Companies in our database. (bioportfolio.com)
  • You can also find out about relevant Crown Bioscience Announcing 2017 Board Directors Election Results Drugs and Medications on this site too. (bioportfolio.com)
  • ID: Pinnately compound, 5 to 9 lanceolate leaflets, pubescent beneath. (udel.edu)
  • ID: Bipinnately compound leaves with ovate, dark green leaflets. (udel.edu)
  • The crown gall is a plant disease caused by bacteria belonging to the genus Agrobacterium. (europa.eu)
  • The long term objective of the project is to decrease the prevalence of crown gall in nurseries to below a reasonable threshold providing substantial incomes to growers. (europa.eu)
  • As a specific objective, the scientists plan to establish a common set of standardized procedures to detect, identify and monitor the fate of the causative agent and to critically view the methods that could be used to control crown gall disease. (europa.eu)
  • Induction is mediated by novel compounds, called opines, that are secreted by crown gall tumours. (nih.gov)
  • Transfer is induced by the conjugal opines, a group of unique carbon compounds synthesized in crown gall tumors. (pnas.org)
  • He proceeded to report systematic studies of the synthesis and binding properties of crown ethers in a seminal series of papers. (newworldencyclopedia.org)
  • 8. The compound of claim 1, which is selected from the group consisting of: 2S)-1-(3-aminopropyl)-2-mercaptocyclopentanecarboxylic acid, (1R,2S)-2-acetylthio-1-(3-aminopropyl)-cyclopentanecarboxylic acid, an optical isomer thereof, and apharmaceutically acceptable acid addition salt thereof. (patentgenius.com)
  • Hydrogen-bonds are formed between the three hydrogen atoms of protonated amines and three oxygen atoms of 18-crown-6. (newworldencyclopedia.org)
  • The high affinity of 18-crown-6 for potassium ions contributes toward its toxicity. (newworldencyclopedia.org)
  • Other compounds recognize ions, such as sodium and potassium, and transport them in and out of the living cell. (nobelprize.org)
  • Ammonium compounds to antioxidants -- vol. 4. (worldcat.org)
  • Usually, autochthonous (natural) high elevation Norway spruce trees have narrow crown phenotypes, whereas lowland trees have broader crowns. (mdpi.com)
  • Several classes of in vivo carbon monoxide-releasing compounds are useful for the treatment and/or prevention of diseases, such as chronic inflammatory, e.g., rheumatoid arthritis, and of diseases with a strong inflammatory component, such as atherosclerosis, stroke, coronary disease, and Alzheimers disease. (freepatentsonline.com)
  • The in vivo carbon monoxide-releasing compounds can be attached to known drug vectors and/or known anti-inflammatory drugs, such as aspirin. (freepatentsonline.com)
  • The successful 18-Crown-6 adduct formation described earlier is being used as a starting point for reactive DESI , using neurotransmitters as test compounds. (nasa.gov)
  • This report describes the fabrication of a cobalt-chromium crown without an impression using a digitized and scanned temporary crown to provide excellent integration. (bioportfolio.com)
  • Chlorinated hydrocarbons to cobalt and cobalt compounds -- vol. 9. (worldcat.org)
  • [4] Pedersen shared the 1987 Nobel Prize in Chemistry for the discovery of the synthetic routes to and binding properties of crown ethers. (newworldencyclopedia.org)
  • Therefore, while the chemistry of Xe has developed quickly, over the last decades many scientists also tried to stabilise compounds of Argon. (nature.com)
  • Providing new physical stimuli might be a promising avenue to enrich the chemistry of argon beyond these few metastable bound compounds. (nature.com)
  • Our compound feed plants consist of numerous individual machines, which are manufactured by KAHL. (akahl.de)
  • He showed that these compounds had many peculiar and unexpected properties. (nobelprize.org)
  • Its effects include stimulating elements thought to be "inactive" to form unexpectedly stable compounds with unusual chemical and physical properties. (nature.com)
  • Various chemical compounds. (scribd.com)
  • Two unexpected Li m Ar n compounds (LiAr and Li 3 Ar) are predicted to be stable above 112 GPa and 119 GPa, respectively. (nature.com)
  • Therefore, Ar is very reluctant to form stable compounds under ambient conditions. (nature.com)
  • A case of an unusual dilacerated central incisor with a 90° crown-root angulation and palatally displaced crown is presented herein. (bioportfolio.com)
  • ID: Pinnately compound, yellow-green leaves. (udel.edu)
  • ID: Pinnately or bipinnately compound leaves with the petiole base swollen around a bud. (udel.edu)
  • Assets: Broadly rounded crown with compound leaves that cast a light shade. (udel.edu)
  • Walnut tree leaves are compound and between 15 and 30 cm long. (drugs.com)
  • Control of e-CVT to EV Mode Transition on Braking Deceleration Condition for a Compound Power-Split Hybrid Electrical Vehicle. (uni-trier.de)
  • The crown of this species is broad and its bole is not buttressed, straight, and cylindrical. (pfaf.org)
  • They have tested the amine reactive tag illustrated in Figure 5 using a mixture of the neurotransmitters dopamine, serotonin, and norepinephrine, which are all important biological compounds with primary amine functionality. (nasa.gov)
  • The TP1 (Textured Pearl 1) pearl reactive coverstock finished at 500/1000 Siaair and polished with Crown Factory Compound can handle heavier conditions with ease yet still performs on moderate conditions as well. (bowlingball.com)
  • We found that these Ti-rich Ti-O compounds are primarily zero-dimensional electrides with excess electrons confined in the atom-sized lattice voids or between the cationic layers playing the role as anions. (nature.com)
  • A detailed analysis of the electronic structure of LiAr and Li 3 Ar shows that Ar in these compounds attracts electrons and thus behaves as an oxidizing agent. (nature.com)
  • Narrow crown phenotypes are likely the result of adaptation to heavy snow loads combined with high wind speeds. (mdpi.com)
  • Structures of common crown ethers: 12-crown-4, 15-crown-5, 18-crown-6, dibenzo-18-crown-6, and diaza-18-crown-6. (newworldencyclopedia.org)
  • Here, using an unbiased structure search method based on CALYPSO methodology and density functional total energy calculations, the phase stabilities and crystal structures of Li−Ar compounds are systematically investigated at high pressure up to 300 GPa. (nature.com)
  • Assets: Straight, cylindrical trunk with an oblong crown or ascending and descending branches. (udel.edu)
  • 18-crown-6 coordinating a potassium ion. (newworldencyclopedia.org)
  • 18-Crown-6 can solubilize metal salts, particularly potassium salts, in nonpolar and dipolar aprotic solvents. (sigmaaldrich.com)
  • Depending upon the size of the synthesized crown, potassium, for example, could tit inside, while the cesium ion was too large to be trapped. (nobelprize.org)
  • Digital makeover (before-and-after) examples showing how repairs can be made using dental crowns. (animated-teeth.com)
  • The "after" picture for this makeover case (the "normal" picture above) shows how a dentist might rebuild this person's teeth by way of placing dental crowns. (animated-teeth.com)
  • b) Dental crowns probably make the best choice. (animated-teeth.com)
  • The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy (-CH 2 CH 2 O-). Important members of this series are the tetramer (n = 4, or four ethyleneoxy units), the pentamer (n = 5), and the hexamer (n = 6). (newworldencyclopedia.org)
  • For Makers Compounding Pharmacy & Hallmark, your physical size, health symptoms, and pain tolerance are unique to your condition. (makerscompounding.com)
  • From fine-tuned dosages to convenient combined preparations, you can count on our compound pharmacy for dedicated and courteous service. (makerscompounding.com)
  • With an expected 400 total attendees in 2014, CCH brings together the top-level compounding pharmacists and technicians from across the country with the same goal - to protect pharmacy compounding. (iacprx.org)
  • Don't miss the only pharmacy compounding event that takes our issues directly to Washington, D.C.'s doorstep. (iacprx.org)
  • A Compound Control Strategy for Improving the Dynamic Characteristics of the DC-Link Voltage for the PMSM Drive System Based on the Quasi-Z-Source Inverter. (uni-trier.de)