Fluoride 1995; 28(2):75-86 Amelioration of fluoride toxicity in some accessory reproductive glands and spermatozoa of rat. Chinoy NF, Narayana MV, Dalal V, Rawat M, Patel D. Reproductive Endocrinology and Toxicology Unit, School of Sciences, Gujarat University, Ahmedabad 380 009, India. Summary: Sodium fluoride (NaF) at a dose of 10 mg/kg body weight was administered orally to male rats (Rettus norvegicus) daily for 30 and 50 days to evaluate the effect of the physiology of some sex accessory glands and sperm functions. The effects of withdrawal upon cessation of NaF ingestion, and of administering ascorbic acid (AA) and/or calcium (Ca++) along with NaF, were also investigated. The results revealed that the NaF treatment caused a significant elevation in serum fluoride levels with a simultaneous rise in Ca++ levels. This could be attributed to the formation of a calcium fluoride complex leading to calcium accumulation. The treatment resulted in structural and metabolic alterations in sperm, ...

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The piezobirefringence of calcium fluoride, barium fluoride, strontium fluoride, gallium arsenide, and cadmium fluoride has been measured in the infrared over the wavelength range 3.5 to 11 micrometers. A large dispersion was found in the coefficients of the fluorides; moreover, some of the coefficients were observed to reverse sign. The data for GaAs showed a small yet significant dispersion. The data for the alkaline-earth fluorides were fitted to a three parameter strain-dependent oscillator representation of the infrared-active transverse-optic (TO) phonon; the predominant contribution to the dispersion comes from the strain-induced TO phonon splitting; estimates were made to the strain-induced oscillator strength anisotropy. The GaAs data were fitted to the same model but with only two free parameters; here the predominant contribution to the dispersion came from the estimated strain-induced oscillator strength anisotropy of the TO phonon; the experimental data agree fairly well with the theory of

Potassium salts diffuse along dentinal tubules working to decrease the excitability of intradental nerve fibers by blocking axionic action. Potassium citrate 5%, potassium citrate 5.5%, and potassium chloride 3.75% can be used interchangeably and are more effective than fluoride alone.2 Potassium nitrate 5% is most commonly found in the United States because it is the only ingredient approved by the FDA and validated for the relief of sensitivity by interruption of neural response to pain stimuli.3 Studies show potassium nitrate 5% must be used twice daily for at least two weeks for a measurable reduction in sensitivity, and four to eight weeks for pain reduction.2 The downside of potassium salts is solubility; the ingredient is only effective when potassium ion concentrations remain high.1 If this ingredient is effective in reducing a patients dentin hypersensitivity, continued long-term use can be recommended.. Fluoride decreases dentinal permeability by precipitation of calcium fluoride ...

The concept of fluorescence comes from fluorite: a mineral consisting of the salt calcium fluoride (CaF2), a known fluorescent substance. Types of

S33 8WP. Treak Cliff Cavern is known for its geological importance. It has been a designated Site of Special Scientific Interest for many years and by agreement with English Nature all the Blue John Stone deposits on the visitor route are preserved. Blue John Stone is the most prized ornamental variety of Fluor-Spar (Calcium Fluoride). Differing from any other flour-spars in that it has definite banded veins of colour running through it.. Blue John Stone, however, is regularly mined in Treak Cliff cavern from areas not seen by visitors. This is then crafted into fine jewellery, small bowls, ornaments and other decorative items which can be bought from Castleton village.. ...

Fluoride (F) varnishes are effective in preventing caries and reducing dentin sensitivity. The addition of calcium (Ca) and phosphate (PO4) salts may influence the F release rate and also induce formation of calcium/phosphate/fluoride as persistent F reservoirs. The hypothesis is that F release rate can be optimized with the F content and the addition of Ca and PO4 salts. Objectives: To study the effect of the F content and the Ca and PO4 salts on the ion release and precipitation of F varnishes. Methods: The varnish containing 1670 ppm or 22600 ppm fluoride with or without Ca salt (10%) and PO4 salt (5.8%) was painted on a 2x2 cm plastic substrate and immersed in a 0.03 mol/L NaCl solution (n=3). The released ions were measured with pH, Ca, and F electrodes under slow stirring at 22 oC for 3 days. The concentrations of Ca and PO4 were analyzed by spectrophotometric methods. The precipitated calcium phosphate fluoride was characterized with X-ray Powder Diffraction and Scanning Electron ...

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Modified lead titanate ceramics with a composition of (Pb0.88-xCaxSm0.08)(Ti0.98Mn0.02)O3; x = 0.11, 0.13, 0.15 and 0.17 were prepared. Simultaneous doping of samarium and calcium resulted in normal ferroelectric behavior, i.e. the dielectric properties changed in a manner typically associated with isovalent shifting of the Curie temperature. However, the unique attribute of this system appeared for the x=0.13 and 0.15 compositions, which exhibited kts ≥75%.

LeahsMintytoutou20 h, 49 m ago. Hi, are these those awful tasting chalky tablets you have to chew or just …Hi, are these those awful tasting chalky tablets you have to chew or just straight tablets to swallow? Thinking of getting some for my daughter but I wont bother if they are chewable onesthanks ...

Page contains details about Ag/C/Au nanocomposites . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com

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Page contains details about starch-montmorillonite nanocomposite . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com

Multilayer coextrusion has been used to produce extruded films having up to several thousand alternating layers with individual layer thicknesses ranging from several micrometers to

Gynergène caféiné is a medicine available in a number of countries worldwide. A list of US medications equivalent to Gynergène caféiné is available on the Drugs.com website.

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Presented by M di-T Gastein.. The hot springs of Wildbad Gastein in Salzburg, Austria, contain Sodium Sulphate predominantly, but also Silicic Acid, Potassium Sulphate and Carbonate, Lithium Chloride, Magnesium Carbonate, Ferrum Carbonate, Aluminium Phosphate, and traces of Calcium Fluoride, Strontium, Arsenicum, Titanic Acid, Rubidium, C sium; also free Carbonic Acid. Lapis albus is a kind of gneiss found in the spring. It is a Silico-fluoride of Calcium. Dilutions.. Clinical.─Amenorrh a. Apoplexy. Calculi. Callosities. Cold, easily taken. Constipation. Debility. Diarrh a. Gout. H morrhoids. Membranous dysmenorrh a. Paralysis. Rheumatism. Scars. Sexual weakness. Typhlitis. Varicose ulcers.. Characteristics.─The effects of the baths are thus described by Constantin James: General unpleasant sensation. Instead of expanding [as would be expected in a warm bath] the skin is drawn up upon itself as if by a tight astringent. There is slight dyspn a; the abdominal walls draw together; the ...

Receding Gums Relief is a homoeopathic formula combined with Schuessler Tissue Salts commonly used for temporary relief of inflamed, bleeding and receding gums. Dosage: Adults: 1 dose is 2 sprays. Take 1 dose twice daily for 4 - 5 weeks. Maintenance dose: 1 dose daily. Directions for use: Spray under the tongue. For best results take 10 minutes before food and/or cleaning teeth or as professionally prescribed. Ingredients: Hekla lava 6C, Fragaria vesca 6C, Plantago major 6C, Capsicum annum 6C, Calcium fluoride 6X, Coccinella septempunctata 6C, Carbo vegetabilis 6C, Contains ethanol. Warning: Always read the label and use only as directed. If symptoms persist consult your healthcare professional.. ...

Synonyms for fluorapatite crystal in Free Thesaurus. Antonyms for fluorapatite crystal. 4 words related to fluorapatite: atomic number 9, fluorine, F, apatite. What are synonyms for fluorapatite crystal?

Broadband SFG spectroscopy is shown to offer considerable advantages over scanning systems in terms of signal-to-noise ratios when probing well-formed single-component supported lipid bilayers formed from zwitterionic lipids with PC headgroups. The SFG spectra obtained from bilayers formed from DOPC, POPC, D Complex molecular systems: supramolecules, biomolecules and interfaces

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Dielectric Polymer Nanocomposites provides the first in-depth discussion of nano-dielectrics, an emerging and fast moving topic in electrical insulation.

I just had my new shelf delivered today. It was painted with varnish a few days ago and still has that varnish smell on it. Would this have any effect on...

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What do I know? I know I like to make mistakes, and I know I like to make them by myself. All the varnishing I do today came from an utterly absurd mistake I once made......the paper and the print looked just so stupid with the wet varnish all over and through .....you could almost see right through to the other side. Everyone knows that varnish is supposed to sit on the surface of the art....but to soak right through the paper ??? This was truly absurd, a definite failure of a try ...

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TY - JOUR. T1 - Interfacial structures and vibrational spectra at liquid/liquid boundaries. T2 - Molecular dynamics study of water/carbon tetrachloride and water/1,2- dichloroethane interfaces. AU - Ishiyama, Tatsuya. AU - Sato, Yuji. AU - Morita, Akihiro. PY - 2012/10/11. Y1 - 2012/10/11. N2 - Flexible and polarizable molecular dynamics simulations are carried out to elucidate the structure and vibrational sum frequency generation (SFG) spectra of two water/organic liquid interfaces: water/carbon tetrachloride (CCl 4) and water/1,2-dichloroethane (DCE). Preceding experimental spectra by Richmond and co-workers have shown quite contrasting features of the two SFG spectra. The former spectrum is analogous with that of water/vapor interface with two-band structure, while the latter is structureless without feature of the dangling OH bond. The present calculations well reproduced these experimental features, though the orientational structure of interfacial water is found to be qualitatively ...

|p||strong|Contents: |/strong||/p| |p||strong||/strong|0.05% w/v sodium fluoride BP equivalent to 0.23mg fluoride ion per ml. Also contains: Sorbitol, sodium saccharin, sodium benzoate, peppermint oil, menthol, ethanol, E131 |br /||br /||strong|Indicatio

Liu J, Wang X, Jin Q, Jin T, Chang S, Zhang Z, Czajka-Jakubowska A, Giannobile W, Nör J, Clarkson BH. The stiulation of adipose-derived stem cell differentiation and mineralization by ordered rod-like fluorapatite coatings. Biomaterials 2012; 33(20): 5036-5046.. Liu J, Jin TC, Chang S, Czajka-Jakubowska A, Clarkson BH. Adhesion and growth of dental pulp stem cells (DPSCs) on enamel-like fluorapatite (FA) surfaces. J Biomed Mater Res A. 2011; 98 (3): 528-34. Liu J, Jin TC, Chang S, Czajka-Jakubowska A, Zhang Z, Nör J, Clarkson BH. The effect of novel fluorapatite (FA) surfaces on osteoblast-like cell adhesion, growth and mineralization. Tissue Eng Part A. 2010; 16(9):2977-86.. Clarkson BH and Roger JM. Dental Education turned upside down. J Dent Res 2010; 89:106-107.. Czajka-Jakubowska AE, Liu J, Chang SR, Clarkson BH. The effect of the surface characteristics of various substrates on fluorapatite crystal growth, alignment, and spatial orientation. Med Sci Monit. 2009; 15(6):84-8.. ...

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Fluorine is found in the minerals fluorapatite, cryolite and fluorspar in the Earths crust. It is not found as a free element in nature because it is too...

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Processing techniques are critical in polymer manufacturing and this holds true for nanocomposites. Several processing methods and innovative techniques are discussed. This review is accompanied by around 400 abstracts compiled from the Polymer Library, to facilitate further reading on this subject.

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A team led by researchers at UCLA has created a super-strong yet light structural metal nanocomposite with extremely high specific strength and modulus.

Engineers from MIT have developed a strong and stretchable novel type of nanocomposite that one day might make it into the human body via implantable devic

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1. Introduction. In recent years there has been much attention given to polymer-clay nanocomposites, particularly those developed with layered silicates due to the need of more efficient engineering materials, and because of the fact that pure polymers do not present the properties needed for certain applications. Several methods have been applied for the preparation of polymer-clay nanocomposites, such as melting intercalation, the most used among them1.. Polymeric nanocomposites are hybrid materials where inorganic nanosized substances are dispersed in a polymer matrix2-3. Polymer layered silicate nanocomposites are compared to conventional polymeric composites due to the use of fillers to improve some specific properties1. Such nanocomposites present improvement on mechanical, thermal, flammability and dimensional stability properties, using low concentrations of silicate, around 1-5% by weight4.. From the surveys conducted by the Toyota group which developed polyamide 6 nanocomposites using ...

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This article reviews nanocomposites focusing on their impact and recent trends in the field of bone grafting. Although autogenous- and allogeneic-bone grafts have been used for a long time in bone therapies, there is still a donor shortage and infection risk. As an alternative, synthetic biomaterials have been developed and clinically used as bone grafts, but most of them differ substantially from natural bone either compositionally or structurally. It remains a great challenge to design an ideal bone graft that emulates natures own structure. Owing to the composition and structural similarity to natural bone, most of the current investigations involve the use of nanocomposites, particularly hydroxyapatite/collagen system, as promising bone grafts, but it is surprising that none of the reports review the rationale and design strategy of such nanocomposites in detail for the benefit of researchers. Accordingly, this article addresses the state-of-the-art of those nanocomposites and provides ...

Lithium-ion batteries designed for use in heavy-duty hybrid vehicles are continuously improved in terms of performance and longevity, but they still have limitations that need to be considered when developing new hybrid vehicles. The aim of this thesis has been to study and evaluate potential test and analysis methods suitable for being used in the design process when maximizing lifetime and utilization of batteries in heavy-duty hybrid vehicles.. A concept for battery cell cycling on vehicles has been evaluated. The work included development of test equipment, verification of hardware and software as well as an extended period of validation on heavy-duty trucks. The work showed that the concept has great potential for evaluating strategies for battery usage in hybrid vehicles, but is less useful for accelerated aging of battery cells. Battery cells encapsulated in flexible packaging material have been investigated with respect to the durability of the encapsulation in a demanding heavy-duty ...

|p|Offering improved barrier properties, fire resistance, and strength, polymer nanocomposites are increasingly desirable as coating, structural, and packaging materials in a wide range of automobile, civil, and electrical engineering applications|b|. Polymer Nanocomposites|/b| offers a comprehensive review of the main types of polymer nanocomposites and their properties. Part I reviews the range of layered silicates and discusses such properties as flammability, thermal stability, barrier properties, wear resistant and biodegradability. Part II considers nanotubes, nanoparticles, and inorganic-organic hybrid systems, and analysis elasticity and strength as well as magnetic and light-emitting properties.|/p|

Drilling is most commonly used secondary machining process for structural joining of Glass Fiber Reinforced Plastic (GFRP) composites. Performing drilling operations on GFRPs/Multi-Walled CarbonNanoTubes (MWCNTs) reinforced GFRPs is really a challenging task due to their non-homogeneity and anisotropic behavior, which directs to generation of material damages. The prime focus of current work is to identify the suitable process parameters for enhancing the performance of drilling of GFRP nanocomposites. In this study, the drilling experiments are conducted on 0.3wt.% MWCNT-GFRP nanocomposites with solid carbide, TiCN and TiAlN coated drills (6mm diameter) under dry and chilled air cutting environments. The dry drilling experiments are conducted without any assistance of cooling fluid in ambient condition. The chilled air at a temperature of 3°C was supplied from the vortex tube. Experimental data is used for ANOVA (balanced) analysis. The cutting parameters such as feed rate, cutting speed and ...

You can employ Varnish to improve the speed of any website that is hosted on a dedicated server from our company when the Hepsia hosting Control Panel is installed on it. Not only will you get the data caching platform ready for use at no extra fee, but you will also exert total control over it via the Hepsia Control Panels easy-to-use graphical interface. It will take just one click to start or remove an instance or to clear the cached data associated with any website that is using the Varnish platform and in case you are more advanced, you can also view the platforms system logs. Varnish comes with at least 3 GB of system memory for data caching purposes, so even in case you host an enormous number of websites on your dedicated server and they all use the platform, the improvement in their performance will be visible. Youll simply need to wait for a while till Varnish caches whatever web pages the website visitors load on their end. The Varnish platform works best if the websites use a ...

This is an archival, removable varnish that protects oil and acrylic paintings and allows for the removal of dirt without damaging the painting underneath. When applied as a final varnish it dries to a clear, non-tacky, water resistant, and hard film that prevents dirt and pollutants from contacting the painting surface. Soluvar Varnish is self-leveling and will not hold brush strokes. Its flexible, so it wont crack from temperature and humidity changes, and its also resistant to discoloration. Soluvar Varnish is available as a liquid in 8 oz. and 32 oz. bottles, and as an aerosol in 13 1/2 oz. spray cans. Its also available in both gloss and matte finishes.. ...

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Varnishes are used to protect paintings. For fine art usage varnishes should be removable so that paintings can be cleaned in the future.Artists Gloss Varnish - A general purpose gloss varnish that dries to a non-yellowing glossy finish. Removable. Ar

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Wood lacquer is a set of substances that can form a film in organic solvents and water. After the varnish is applied to the prepared surface and dries, it forms a transparent and durable protective film. Varnishing is an effective way to protect against decay of wood. Requirements for wo...