摘要:派瑞林、派拉伦 ( Parylene) 是一种保护性高分子材料,是 20 世纪 60 年代中期美国联合碳化物公司开发的一种分子级敷型涂层材料,是独特的聚对二甲苯 ( poly-P-xylylene) 聚合物系列的通用名称,也是军事标准中唯一一种固态涂料。在此小编为大家介绍了一下Parylene真空气相沉积工艺及应用。 关键词:Parylene,真空气相沉积工艺,应用 前言       派瑞林、派拉伦 ( Parylene) 是一种保护性高分子材料,是 20 世纪 60 年代中期美国联合碳化物公司开发的一种分子级敷型涂层材料,是独特的聚对二甲苯 ( poly-P-xylylene) 聚合物系列的通用名称,也是军事标准中唯一一种固态涂料。Parylene使用真空气相沉积工艺形成保护膜,这种薄膜具有厚度均匀、致密无针孔、透明无应力等特点,有优异的电绝缘性和防护性。1   Parylene 的分类Parylene
Mixed xylene (CAS 1330-20-7) comprises individual xylene isomers (m-xylene, o-xylene, p-xylene) and ethylbenzene. Data for these substances have been considered in this summary. Exposure levels of the xylene isomers associated with neurological effects in animals are well defined. Acute exposures to concentrations inducing behavioural changes included a 6 hour inhalation exposure to the individual xylene isomers at a concentration of 3000 ppm (Korsak, 1990). Rotarod performance was tested in male rats before and immediately after exposure. The results indicated that the toxic effects of exposure to o- and m-xylene were more pronounced than those of p-xylene at the single exposure level evaluated (Korsak et al, 1994). Sensory deficits resulting from exposure to p-xylene were observed in a key study of the acute neurotoxic effects (Dyer, 1988). A significant depression in amplitude of flash-evoked potential peak N3 was observed following an oral dose of 250 mg/kg or more of p-xylene and following ...
Entry into water may be direct or via atmospheric deposition, runoff and leaching.. Recorded levels in the marine environment. Xylenes have been regularly reported in the oceans, estuaries, precipitation, rivers, groundwaters, potable sources and drinking water, as well as aquatic sediments and biota (Hedgecott 1990, Crookes et al. 1993). High usage and release, high mobility in the atmosphere, and natural sources all contribute to widespread occurrence in waters. Post-1988 data for UK waters were summarised in Hedgecott and Lewis (1997). Most of the data are for estuarine and coastal waters, with xylenes apparently detected in relation to industrial releases of xylenes and releases during oil extraction and transport. None of the published values exceed the concentration of 30 mg l-1 of total xylenes which has been proposed as the annual average EQS value. Fate and behaviour in the marine environment Hedgecott and Lewis (1997) reviewed the fate and behaviour of xylenes.. Atmospheric xylenes are ...
Parylene C is used in a device because of its conformable deposition and other advantages. Techniques to study Parylene C aging were developed, and lessons learned that could be utilized for future studies are the result of this initial study. Differential Scanning Calorimetry yielded temperature ranges for Parylene C aging as well as post-deposition treatment. Post-deposition techniques are suggested to improve Parylene C performance. Sample preparation was critical to aging regimen. Short-term (%7E40 days) aging experiments with free standing and ceramic-supported Parylene C films highlighted lessons learned which stressed further investigations in order to refine sample preparation (film thickness, single sided uniform coating, machine versus laser cutting, annealing time, temperature) and testing issues (necking) for robust accelerated aging of Parylene C. ...
Environmental and biological monitoring were conducted to investigate exposure to xylene (1330207) in technologists in a histology laboratory. Xylene exposure was determined by breathing zone environmental sampling. An estimate of xylene uptake by inhalation was then made by multiplying breathing rate by environmental concentration, length of exposure, and a retention factor. M-methylhippuric-acid
Business Directory for Xylene Suppliers in Kolkata - Get contact details of Xylene Manufacturers, Wholesale Xylene Exporters, Best Xylene Traders & Distributors Across the Kolkata.
Business Directory for Mix Xylene Suppliers in Kolkata - Get contact details of Mix Xylene Manufacturers, Wholesale Mix Xylene Exporters, Best Mix Xylene Traders & Distributors Across the Kolkata.
Buy Mix Xylene Chemicals in India, Need to Buy 500ml to 20liter Mix Xylene, Xylene and p-xylene Online at ibuychemikals.com at low price with safe delivery
The properties of p-xylene and m-xylene adsorbed in NaY and KY faujasites have been studied by grand canonical Monte Carlo simulation. Biased particle insertions and deletions were implemented to allow the computation of equilibrium adsorption isotherms of such complex systems. This work is based on a new adsorbatezeolite potential function named TrAZ potential (transferable adsorbatezeolite potential). Adsorption isotherms and isosteric heats of adsorption of pure components have been calculated at 423 K and compared to the available experimental data. Grand canonical Monte Carlo simulations of coadsorption have also been performed. Three binary mixtures corresponding to different gas-phase compositions have been studied. The p-xylene/m-xylene selectivities predicted from the simulation are in good agreement with experiments: the NaY zeolite preferentially adsorbs the m-xylene isomer, whereas the KY faujasite is selective for p-xylene. From a detailed analysis of the xylene adsorption sites, we ...
2,6-dimethylphenol (2,6-DMP) is a product of phenol methylation, especially important for the plastics industry. The process of phenol methylation in the gas phase is strongly exothermic. In order to ensure good temperature equalization in the catalyst bed, the process was carried out using a catalyst in the form of a fluidized bed - in particular, the commercial iron-chromium catalyst TZC-3/1. Synthesis of 2,6-dimethylphenol from phenol and methanol in fluidized bed of iron-chromium catalyst was carried out and the fluidization of the catalyst was examined. Stable state of fluidized bed of iron-chromium catalyst was achieved. The measured velocities allowed to determine the minimum flow of reactants, ensuring introduction of the catalyst bed in the reactor into the state of fluidization. Due to a high content of o-cresol in products of 2,6-dimethylphenol synthesis, circulation in the technological node was proposed. A series of syntheses with variable amount of o-cresol in the feedstock allowed to
Formerly detector tubes of MSA Auer/Safety. Now even a bigger range of detector tubes available. Detector Tubes - Silica & Charcoal Tubes - Smoke Tubes
Lookup HS Codes for Paraguay v 27.07.30 - Xylene (xylenes). Avalara LandedCosts helps determine your duty rates and other import taxes for Paraguay.
Clear-Advantage is a specific fraction of petrochemical derivatives that creates a safer xylene substitute for processing, staining and coverslipping.
Determination by Modeling of the Interactions during the Adsorption Equilibrium of N-Propanol and Ortho Xylene on Activated Carbon Surface Abstract.
Pseudomonas putida Idaho utilizes toluene, m-xylene, p-xylene, 1,2,4-trimethylbenzene, and 3-ethyltoluene as growth substrates when these hydrocarbons are provided in a two-phase system at 5 to 50% (vol/vol). Growth also occurs on Luria-Bertani medium in the presence of a wide range of organic solvents. The ability of the organism to grow in the presence of organic solvents is correlated with the logarithm of the octanol-water partition coefficient, with dimethyl-phthalate (log P(OCT) = 2.3) being the most polar solvent tolerated. During growth with p-xylene (20% [vol/vol]), there was an initial lag period accompanied by cell death, which was followed by a period of exponential growth. The stationary phase of growth was characterized by a dramatic decrease in cell viability, although cell dry weight and turbidity measurements slowly increased. Electron micrographs revealed that during growth in the presence of p-xylene, the outer cell membrane becomes convoluted and membrane fragments are shed ...
No fertility studies are reported for the aromatic sulphonic acids. These substances are very corrosive as was demonstrated in skin and eye irritation studies, in the acute oral studies, and in the single repeated dose oral study. For animal welfare, long-term exposures to corrosive substances are not recommended. There are however studies for the chemically related hydrotrope substances that looked at reproductive organs and development of offspring. Hydrotropes are the salt form of the sulphonic acids and therefore are used as read-across for this endpoint. The 90-day oral rat and oral mouse studies and the 2-year chronic dermal rat and mouse studies with the closely related compound sodium xylene sulfonate (CAS No. 1300-72-7) included examination of sex organs of both sexes. No treatment related effects on reproductive organs were reported at doses roughly equivalent to those in the developmental toxicity study. The 1994 study with calcium xylene sulphonate (CAS No. 28088-63-3) did not follow ...
Measuring BTX aromatics (Benzene, Toluene & Xylene) is essential, as considered the most toxic components of gasoline & needs to be removed from water
Article Characteristics of benzene, toluene and xylene gas removal by a biofilter using scoria. The biodegradation experiments of Benzene, Toluene and Xylene (BTX) by bacillus culture were carried out. In batch biodegradation experiments of binary mi...
EWGs Tap Water Database Xylenes (total) results for Creston Public Water | Xylenes (total). Find out what is in your tap water
XYLENE (CAS 1330-20-7) Market Research Report 2018 aims at providing comprehensive data on xylene market globally and regionally (Europe, Asia, North
Ortho Xylene buy online at low price in India on Ibuychemikals.com. When you buy ortho xylene online from us, COA and MSDS are furnished to reassure quality.
The upper operon of the TOL plasmid pWW0 of Pseudomonas putida encodes a set of enzymes which transform toluene and xylenes to benzoate and toluates. The genetic organization of the operon was characterized by cloning of the upper operon genes into an expression vector and identification of their products in Escherichia coli maxicells. This analysis showed that the upper operon contains at least five genes in the order of xylC-xylM-xylA-xylB-xylN. Between the promoter of the operon and xylC, there is a 1.7-kilobase-long space of DNA in which no gene function was identified. In contrast, most of the DNA between xylC and xylN consists of coding sequences. The xylC gene encodes the 57-kilodalton benzaldehyde dehydrogenase. The xylM and xylA genes encode 35- and 40-kilodalton polypeptides, respectively, which were shown by genetic complementation tests to be subunits of xylene oxygenase. The structural gene for benzyl alcohol dehydrogenase, xylB, encodes a 40-kilodalton polypeptide. The last gene of ...
Thin parylene C membranes having smooth front sides and ultrathin regions (e.g., 0.01 μm to 5 μm thick) interspersed with thicker regions are disclosed. The back sides of the membranes can be rough compared with the smooth front sides. The membranes can be used in vitro to grow monolayers of cells in a laboratory or in vivo as surgically implantable growth layers, such as to replace the Bruchs membrane in the eye. The application further provides an implantable cage-like apparatus for culturing cells comprising the parylene membrane.
Methods of making parylene AF4 using novel that result in reduced cost. Low dilution technology may used to provide parylene AF4 in substantially improved yields. The relative amount of transition metal catalyst can be decreased. The amount of undesired byproduct is also reduced.
Benzene, toluene, ethylbenzene and xylene, also known as BTEX, are released into environmental media by petroleum product exploratory and exploitative activities and are harmful to humans and animals. Testing the effects of these chemicals on a significantly large scale requires an inexpensive, rapidly developing model organism such as Drosophila melanogaster. In this study, the toxicological profile of benzene, toluene, ethylbenzene, p-xylene, m-xylene, and o-xylene in D. melanogaster was evaluated. Adult animals were monitored for acute toxicity effects. Similarly, first instar larvae reared separately on the same compounds were monitored for the ability to develop into adult flies (eclosion). Further, the impact of fixed concentrations of benzene and xylene on apoptosis and mitosis were investigated in adult progenitor tissues found in third instar larvae. Toluene is the most toxic to adult flies with an LC50 of 0.166 mM, while a significant and dose-dependent decrease in fly eclosion was observed
* found in: Xylenes, AR® (ACS), p-Xylene, Xylene, Histological Grade, Xylenes, Purified, o-Xylene, m-Xylene, 99%, Xylenes ACS Reagent, ACS Reagent, p..
|p|Gastec Detector Tubes indicate concentrations directly by way of a calibrated scale printed on the tubes. Gastec detector tubes are used for analysing airborne gases/vapours, as well as pollutants in soil and water.|/p|
Matheson-Kitagawa precision detector tubes are formulated with high purity chemical reagents which absorb and react with the gas or vapor being measured. The reaction causes a colorimetric stain which varies in length to the concentration of the gas or vapor being measured. The length of stain is normally read directly off a scale printed on each tube. Four types of Matheson-Kitagawa tubes provide the needed flexibility for different gases and sampling conditions.. Dont order more than you will use in the near future. Gas detection tubes have a finite shelf life. MATHESON guarantees the detector tubes you receive will have at least three months of remaining shelf life.. ...
|p|Gastec Detector Tubes indicate concentrations directly by way of a calibrated scale printed on the tubes. Gastec detector tubes are used for analysing airborne gases/vapours, as well as pollutants in soil and water.|/p|
Sensidyne-Kitagawa detector tubes are single stroke detector tubes for easy, low cost spot detection of a wide range of hazardous gases and vapors#105SC Ammonia 5-260ppm
Detector Tubes Page2 Standard and Configurable Industrial Components from MISUMI.Mechanical components, Press Die, Plastic Mold products available from MISUMI. Free CAD download, short lead times, competitive price, no minimum.Detector Tubes Page2 Standard and Configurable Industrial Components from MISUMI.Mechanical components, Press Die, Plastic Mold products available from MISUMI. Free CAD download, short lead times, competitive price, no minimum.
Emissions of Volatile Organic Compounds (VOCs) at oil transfer stations are high and the primary pollutants of concern from a health perspective include benzene, toluene, ethylbenzene, and xylene (BTEX) BTEX. This exploratory study investigated personal exposure to BTEX through environmental air samples collected from 50 workers (tanker loading workers, tank-gauging workers, drivers, firefighters, and office workers) at a major oil distribution company in Iran. Airborne BTEX exposures were evaluated over 8-hour periods during work-shift by using personal passive samplers. Measured mean values for workers at four sites were, respectively, 2437, 992, 584, and 2788 mu g/m(3) for benzene; 4415, 2830, 1289, and 9407 mu g/m(3) for toluene; 781, 522, 187, and 533 mu g/m(3) for ethylbenzene; and 1134, 678, 322, and 525 mu g/m(3) for xylene. Exposure across job type was similarly stratified across all personal exposures to BTEX measured in air samples with maximum concentrations found for tanker loading ...
EWGs Tap Water Database 1,2,4-Trimethylbenzene results for Tract 349 Mutual Water Co. | 1,2,4-Trimethylbenzene. Find out what is in your tap water
Background: Today, advances in different areas of science and technology along with their application in industries have led to an increase in dangerous pollutants which can resist biodegradation. Volatile organic compounds (VOCs) are regarded as important factors of air pollution in closed environments. Xylene is one of these compounds which ...
Gafrarium divaricatum were exposed to xylene (4.25 and 8.50 mg l(-1)), benzene (4.35 and 8.70 mg l(-1)) and gear oil-WSF (1 and 2%) for 30 days. Chronic exposure of clams to the pollutants resulted in loss of bubbling epithelium, reduction in cytoplasm volume and density, fusion of cell membranes and nuclei forming darkly stained area at basal part of the cells. Disintegration of basement membrane due to damaged epithelial cells, disruption of inner lining of tubule, formation of necrotic spaces, separation of epithelial cells from basement membrane, increase in internal luminar area, complete necrosis of epithelial cells as well as occurrence of cell debris in between the tissue were also observed in the clams due to chronic exposure of the toxicants.
The NSW Environment Protection Authority (EPA) has issued a $15,000 fine to Parchem Construction Supplies Pty Ltd after a chemical spill at the companys premises in Wyong.. EPA Hunter Region Manager, Adam Gilligan, said the EPA attended the incident with Fire and Rescue crews on 13 October 2015.. Fire and Rescue New South Wales Hazmat (FRNSW Hazmat) and the EPA attended the premises. The site was evacuated whilst Hazmat undertook a clean-up recovery operation.. The spill occurred when a flammable wash solvent mix containing acetone and xylene was being moved by forklift as part of a decanting process. The mixing pot containing the chemicals was not secured adequately to the forklift, and 700 litres of the mix was spilt.. Acetone is a volatile organic solvent, which is toxic in high doses. When exposed to the air, it quickly evaporates and remains highly flammable, while short-term inhalation to mix can result in irritation of the eyes, nose, and throat, said Mr. Gilligan.. The spill ...
Global Xylene Formaldehyde Resin Market 2020 by Manufacturers, Regions, Type and Application, Forecast to 2025 published in Mar 2020 spread across 105 pages, providing competitive landscape analysis, market share info and more is now available for US $3480 at Market Research Reports.
VITLAB™ Narrow Mouth LDPE Safety Wash Bottles Chemical Label: Xylene, Capacity: 500ml VITLAB™ Narrow Mouth LDPE Safety Wash Bottles Wash Bottles
The persistence of neurobehavioral effects in female rats (Mol:WIST) exposed to 500 ppm technical xylene (dimethylbenzene, GAS-no 1330-20-7) for 6 hours per day on days 7-20 of prenatal development was studied. The dose level was selected so as not to induce maternal toxicity or decreased viability of offspring. Investigations of learning and memory abilities were performed using a Morris water maze. This task requires rats to spatially navigate, using distal extramaze cues to locate a small platform under the surface of the water in a large pool. At the age of 16 weeks, the exposed offspring showed impairments when the platform was relocated in the pool. Impaired performances after platform relocation were also observed in exposed offspring at 28 and 55 weeks of age, although the difference was not statistically significant at 55 weeks. These data could indicate that the effect was partly reversible, although over a long time period. However, another explanation could be that the animals became ...
Physico-chemical data are available for m, p and o xylene. Data on physical properties were obtained from a number of secondary sources. The data in these secondary sources are based on a critical evaluation of peer-reviewed data and the selected values are considered to be reliable and representative of the property under investigation. Information on the review process was documented in the introduction of the source. The use of Klimisch codes (Klimisch et al. 1997) was extended to these secondary sources and a reliability code of (2) valid with restrictions was assigned when using the authoritative secondary source. For the key values, the mean values of selected physico-chemical properties were used. The data show that m-xylene and o-xylene are liquids and although p-xylene is considered to be a solid, it has a low melting point. Therefore the flammability classification for the isomers has been determined following the criteria for flammable liquids. The flash point and boiling point of ...
In contrast to other conformal coatings that are brushed, dipped, or sprayed onto a substrate, parylene is applied via a vapor-deposition process in a vacuum chamber. During this vapor deposition polymerization process, raw dimer in powder form is subjected to high heat and, in turn, transforms into a gaseous monomer without an intermediate liquid stage. This gas is then deposited one molecule at a time onto the desired substrate in the coating chamber at ambient temperatures. Finally, the cold trap phase cools temperatures down to a range of -90° to -120°C in order to remove residual parylene.. This unique vapor-deposition method allows parylene to adequately penetrate and coat extremely small stent features. In addition, this process enables the uniform and consistent coating of the complex geometries that characterize the life-saving devices. Deposited in a 0.5-micron-layer thickness, parylene is also pinhole free and can fully coat inside crevices and contours as small as 0.001 mm. ...
Among the range of materials used in bioengineering, parylene-C has been used in combination with silicon oxide and in presence of the serum proteins, in cell patterning. However, the structural properties of adsorbed serum proteins on these substrates still remain elusive. In this study, we use an optical biosensing technique to decipher the properties of fibronectin (Fn) and serum albumin adsorbed on parylene-C and silicon oxide substrates. Our results show the formation of layers with distinct structural and adhesive properties. Thin, dense layers are formed on parylene-C, whereas thicker, more diffuse layers are formed on silicon oxide. These results suggest that Fn acquires a compact structure on parylene-C and a more extended structure on silicon oxide. Nonetheless, parylene-C and silicon oxide substrates coated with Fn host cell populations that exhibit focal adhesion complexes and good cell attachment. Albumin adopts a deformed structure on parylene-C and a globular structure on silicon ...
TY - JOUR. T1 - Estimation of glycated hemoglobin by 2,6-dimethylphenol. T2 - Sulphuric acid conventional method. AU - Mallya, H. M.. AU - Pattabiraman, T. N.. PY - 2001/12/1. Y1 - 2001/12/1. N2 - Glycated hemoglobin levels in hemolysate of normal and diabetic patients were determined by the 2,6-dimethylphenol:57.5% sulphuric acid conventional method and the values were 0.39±0.025 and 0.69±0.21 moles of hydroxymethylfurfural (HMF)/mole of globin, respectively. The mean increase in glycated hemoglobin values in diabetics (1.8 fold) was highly significant (p,0.001). A good correlation (r=0.95) was found between the glycated hemoglobin values obtained by this method and the phenohsulphuric acid method. The values obtained by former method were about 1.2-1.4 times the values by the phenohsulphuric acid method. This study indicates that conventional 2,6- dimethylphenol:57.5% sulphuric acid method is more sensitive for the estimation of glycated hemoglobin than any other method based on the same ...
Dntl provides Mix Xylenol with synonyms Dimethylphenol , Hydroxydimethylbenzene and cas no 1300-71-6 to be used in Fragrances. Cresylic acid, Mix cresols, Mix isomers of dimethyl Phenol, Solvents in wire enamel and organic intermediate in manufacturing perfume for Fragrances are the applications of Mix Xylenol in Fragrances.
In this experiment, I recrystallized garden sulfur (90% pure) to make pure sulfur crystals that gleam in the light and are a light yellow color. First, I acquired a solvent for sulfur. Since sulfur dissolves well in toluene, xylene, and carbon disulfide, I picked the most common option--xylene. My xylene came from paint thinner (it listed xylene as an component). To separate the xylene from the methanol and acetone also in the paint thinner, I mixed equal volumes of water and paint thinner and vigorously shook. This should be done outside, as the vapors are unhealthy. I poured the mixture into a graduated cylinder and let it settle for 15 minutes. The xylene, which is insoluble in water, floated at the top, while the acetone and methanol remained in the water layer. I syringed off the xylene and ended up with ~45mL from three 50mL batches of paint thinner ...
Xylene has been generally used as a clearing and deparaffinizing agent in histology. Because of the potential toxic and flammable nature of xylene, its substitutes have been introduced into some laboratories. In this study, we introduced a novel, non-toxic xylene substitute (SBO), which was generated through a mixture of 86% of white oil No.2 and 14% of N-heptane. SBO had a high boiling point (188°C) and flash point (144°C) coupled with a scentless and decreased volatility. To compare the effectiveness of SBO and xylene in histology, a wide range of tissue samples from rats and human beings were processed in parallel in SBO and xylene, subjected to various staining procedures. Similar to the xylene-processed paraffin blocks, the SBO-processed counterparts were easy to section without any evidence of cell shrinkage. Assessment of the SBO-treated sections stained with hematoxylin-eosin revealed a good maintenance of cell morphology and structure, and a clear definition of the cytoplasm and the ...
Sensidyne-Kitagawa detector tubes are single stroke detector tubes for easy, low cost spot detection of a wide range of hazardous gases and vapors#175SH Nitrogen Oxides 100-2500ppm
Buy GAS233 Chloropicrin Gastec Detector Tubes for range 0.045 - 22ppm from a1-cbiss. Next Day Delivery - We can deliver your Gastec detector tubes to your UK site for the next working day
151677-97-3 - Acetaldehyde, polymer with 2,5-dimethylphenol, formaldehyde, 3-methylphenol and 4-methylphenol - Searchable synonyms, formulas, resource links, and other chemical information.
Fixed thin film, gas/vapor phase bioreactors were assessed relative to their potential for the bioprocessing of methane, trichloroethylene (TCE), and p-xylene. Methanotrophic bacteria were used to process the methane and TCE while a xylene resistant strain of Pseudomonas putida was used to process the p-xylene. Comparisons between the gas phase bioreactors and conventional shaken cultures and sparged liquid bioreactors showed that the gas phase bioreactors offer advantages over the other two systems for the degradation of methane in air. Rates of methane removal with the gas phase bioreactors were 2.1 and 1.6 fold greater than those exhibited by the shaken cultures and sparged liquid bioreactors, respectively. The gas phase bioreactors were shown to have application for the removal of TCE vapors from air with a removal rate of approximately 9 μg TCE d-1 bioreactor-1. Xylene vapors were also scrubbed from air using gas phase bioreactors. At a feed rate of 140 μg of xylene min-1, approximately ...
This study assessed effects of exposure to p-xylene, a ubiquitous air pollutant, on mice infected with murine cytomegalovirus (MCMV), a mouse model for a common human virus. Mice were exposed to filtered air, 600 or 1,200 ppm p-xylene 6 h/d for 4 d and infected with a sublethal dose of MCMV after the first exposure. No deaths occurred among uninfected, p-xylene-exposed mice or infected, air-exposed mice; 34% and 0% mortality occurred respectively in infected mice exposed to 1,200 and 600 ppm p-xylene. Virus titers in the liver and splenic natural killer cell activity were unaffected by exposure to 1,200 ppm p-xylene. MCMV significantly suppressed and p-xylene significantly increased total P-450 levels in the liver, but there was no significant interaction between the two Isozymes 1A1, 2B1/B2, and 2E1 were decreased to a similar degree, suggesting that the virus does not target specific isozymes. Enhanced mortality was not due to immune suppression. While p-xylene potentiated liver damage was ...
Background|br /|The genetic network of the TOL plasmid pWW0 of the soil bacterium Pseudomonas putida mt-2 for catabolism of m-xylene is an archetypal model for environmental biodegradation of aromatic pollutants. Although nearly every metabolic and transcriptional component of this regulatory system is known to an extraordinary molecular detail, the complexity of its architecture is still perplexing. To gain an insight into the inner layout of this network a logic model of the TOL system was implemented, simulated and experimentally validated. This analysis made sense of the specific regulatory topology out on the basis of an unprecedented network motif around which the entire genetic circuit for m-xylene catabolism gravitates.|br /|Results|br /|The most salient feature of the whole TOL regulatory network is the control exerted by two distinct but still intertwined regulators (XylR and XylS) on expression of two separated catabolic operons (upper and lower) for catabolism of m-xylene. Following model
CAS 121-75-5 1330-20-7 UPC01641C ORTHO MALATHION 50 PLUS INSECT SPRAY malathion, o,o-dimethyl dithiophosphate of diethylxylene, dimethylbenzene, xylol (iarc - group 3) *95-1*aromatic petroleum derivative solventinert ients msds toxicity property
Xylene Antabuse. Free Samples For All Orders. Provide High Quality & Discounted Generic Drugs. Buy From Our Extensive Online Catalogue Of OTC Drugs.
TABLE-US-00003 TABLE 2 Solvents and Polycarbonate Discs Pattern Color Color Change Upon Solvent After IPA Description Conc., % Treatment Contact Durability Behavior 1,2- 100% NA NA NA Dissolves surface Dichlorethane but forms circular trace 2-Octanone, 98% 100% Whitish blue Clear Durable Spreads out Acetone/p- xylene 20%/80% White/Blue Clear Durable Solution Spreads out on tensile bone Benzyl Alcohol, 100% Powdery blue Almost wipes Scratchable Not a uniform anhydrous 99.8% clear shape, spreads out Benzyl Alcohol/p- 10%/90% Whitish blue Light blue Durable NA/Applied on xylene leur part only Calcium 1%/99% Bright white Clear Rubs off Circular but Stearate/p-xylene spreads out. Cracks form as solution dries Chlorobenzene 100% Light blue Somewhat clear Durable Circular, some pores visible Chloroform 100% NA NA NA Evaporates but reappears/smears when acetone is applied Cumene, 98% 100% White/blue Clear Scratchable circular Cumene, 98%/p- 5%/95% White Clear Durable circular xylene Cyclohexanone 100% ...
The heterogeneous oxidation of some substituted phenols has been studied by means of electron spin resonance. Strong signals, observed during the oxidation of the phenols with a free para-position, are due to secondary radicals derived from C4-O linked dimeric and polymeric phenols (A) are not to substituted 4, 4-di-pheno-semiquinones (B). Special attention has been given to the oxidation of 2, 6-dimethylphenol which yields a radical with non-equivalent methyl groups. The e. s. r. spectra of the secondary radicals from some 4-substituted 2, 6-dimethylphenol are identical to each other and to that from 2, 6-dimethylphenol itself. This indicates that in these radicals the para-substituent had been displaced by an aryloxy group. The ease of this displacement can be determined by use of the flow technique. ...
Benzene-In Presence Of Gasoline And/Or Other Aromatic Hydrocarbons 5-300 ppm Gas Detector Tube - Sensidyne is the Leader in Air Sampling Pumps and Equipment, Gas Detection, and Sound and Vibration Measurement.
Benzyl Chloride 1-16 ppm Gas Detector Tube - Sensidyne is the Leader in Air Sampling Pumps and Equipment, Gas Detection, and Sound and Vibration Measurement.
D4984-06(2015) Standard Test Method for Carbon Dioxide in Natural Gas Using Length-of-Stain Detector Tubes carbon dioxide content~ length-of-stain detectors~
Buy GAS133HA Tetrachloroethylene Gastec Detector Tubes 7 - 900ppm from a1-cbiss. Next Working Day Delivery - When Ordering Gastec Tubes from a1-cbiss, we aim to deliver to your site for the next working day
Concept Controls offers Gas Detector Tubes and VOC Zeroing, RAE-Sep VOC & Charcoal Zeroing Tubes for rapid and precise measurement of gases and vapors.
TY - GEN. T1 - A comprehensive biological and chemical model for in situ biodegradation of BTEX. T2 - 220th ACS National Meeting. AU - Maurer, Max. AU - Rittmann, Bruce. PY - 2000. Y1 - 2000. N2 - A comprehensive biological and chemical model was presented for the in situ biodegradation of BTEX (constitutes the greatest mass of compounds that partition from fuels into groundwater), focusing on the underlying chemical and biological processes that affect measurable chemical properties of a groundwater in which biodegradation of BTEX may be taking place. Under aerobic conditions, the biodegradability was high for all compounds. Under anaerobic conditions the electron acceptors nitrate, iron, manganese, and sulfate could be used for the degradation of most of the BTEX compounds. Under fermentative methanogenic conditions, all BTEX compounds seemed to be degradable. Abiotic chemical reactions had the potential to alter the chemical speciation of a groundwater significantly.. AB - A comprehensive ...
Ethylbenzene and para-xylene (p-xylene), but not the chemically closely related organic solvents ortho-xylene (o-xylene) and meta-xylene (m-xylene), are known to cause ototoxicity and irreversible hearing loss, though the underlying mechanisms are still unknown. In this study, effects of ethylbenzene and of p-, o-, and m-xylene on human heteromeric α9α10 nicotinic ... read more acetylcholine receptors (nAChRs) expressed in Xenopus oocytes were investigated using the two-electrode voltage clamp technique. ACh dose-dependently evoked an α9α10 nAChR-mediated ion current with an EC50 of 137 μM. When ACh is applied at a low concentration (10 μM), the nAChR-mediated ion current is inhibited by a low concentration (10 μM) of ethylbenzene and p-xylene, but not by the same concentration of the non-ototoxic solvents. At a high solvent concentration (300 μM), all solvents cause inhibition of the ion currents evoked by 10 μM ACh. Ion currents evoked by a near maximum-effective concentration ACh (1 ...
Corresponding author: arif[email protected], [email protected] ABSTRACT. Caralluma edulis (Edgew.) Benth. ex Hk.f. (Asclepiadaceae) is traditionally used for the management of rheumatism. The current study aimed to assess the anti-inflammatory effect of Caralluma edulis, to explain its medicinal use in inflammatory ailments. Caralluma edulis crude extract (Ce.Cr) was investigated in acute (carrageenan and xylene mediated) and chronic (formalin evoked) models of inflammation in mice. Ce.Cr which shows the presence of alkaloids, glycosides, flavonoids, saponins, phenols, terpenes and tannins caused dose-dependent (100, 300 and 1000 mg/kg) reduction of the carrageenan, xylene and formalin-induced inflammation (P , 0.05, P , 0.001 vs. saline group). At the lower dose of 30 mg/kg it was effective in inhibiting the xylene mediated ear edema. No mortality observed with Ce.Cr upto 5 g/kg. This study reveals that Caralluma edulis possess therapeutic ability to reduce inflammation, hence ...
The spatiotemporal variability of ambient volatile organic compounds (VOCs) in Tehran, Iran, is not well understood. Here we present the design, methods, and results of the Tehran Study of Exposure Prediction for Environmental Health Research (Tehran SEPEHR) on ambient concentrations of benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene (BTEX), and total BTEX. To date, this is…
Carbon nanotube networks are an emerging conductive nanomaterial with applications including thin film transistors, interconnects, and sensors. In this letter, we demonstrate the fabrication of single-walled carbon nanotube (SWNT) networks on a flexible polymer substrate and then provide encapsulation utilizing a thin parylene-C layer. The encapsulated SWNT network was subjected to tensile tests while its electrical resistance was monitored. Tests showed a linear-elastic response up to a strain value of 2.8% and nearly linear change in electrical resistance in the 0%â€2% strain range. The networks’ electrical resistance was monitored during load-unload tests of up to 100 cycles and was hysteresis-free ...
The Indian paint industry has been witnessing a gradual shift in the preferences of people from the traditional whitewash to high quality paints like emulsions and enamel paints, which is providing the basic stability for growth of Indian paint industry. Besides, it is creating a strong competitive market, where players are utilizing different strategies to tap the growing demand in the market for a larger share. Moreover, rise in disposable income of the average middle class coupled with increasing investment on education; urbanization; development of the rural market; and various launches of many innovative products, like friendly, odor free, and dust & water resistant paints, are major drivers that are propelling the growth of the paint market in India.. As per our report India Paint Industry Outlook 2022, provides study of Indian paints industry by value and volume, which is expected to grow at a CAGR of around 12% during 2018-19 to 2021-22 in value terms. The reports provide an in-depth ...
2011. López-Ruiz Heraclio,* Cortés-Hernández Mayra, Rojas- Lima Susana, Höpfl Herbert. Synthesis of nitrogen-, oxygen- and sulphur-containing tripodal ligands with a trimethylbenzene core. Journal of the Mexican Chemical Society, 55(3), 168-175. (2011). ...
Note: In all staining procedures for fecal and gastrointestinal tract specimens, the term Xylene will be used in the generic sense. Xylene substitutes are recommended for the safety of all personnel performing these procedures. 1. Prepare slide for staining. 2. Remove the slide from Schaudinns Fixative (30 minutes fixation time), and place it in 70% ethanol for 5 minutes. 3. Place the slide in 70% ethanol plus iodine for 1 minute for fresh specimens or 5 to 10 minutes for PVA air-dried smears. 4. Place the slide in 70% ethanol for 5 minutes.* 5. Place the slide in a second container of 70% ethanol for 3 minutes.* 6. Place the slide in trichrome stain for 10 minutes (staining times may vary on the thickness of the fecal material and/or the number of slides stained at one time). 7. Place the slide in 90% ethanol plus acetic acid for 1 to 3 seconds. Immediately drain the rack, and proceed to the next step. Do not allow slides to remain in this solution. 8. Dip the slide several times in 100% ...
cc: Subject: Re: Eosin bleeding out Hello, Long time since I posted. Please if anyone out there in HistoLand can tell me what causes and how can I get rid of Eosin counterstain bleeding out of frozen tissue sections after they are coverslipped and are drying. Once in awhile this is a problem. I have not changed any solutions or technique or mounting media. I use the following protocol: 1. Rapid Fixx-10 to 15 secs 2. Tap water rinse x2 3. Gill 3 Hemotoxylin 35-60 seconds depending on age of stain 4. Tap water rinse at the sink until water is clear 5. Lithium Carbonate Bluing-5 to 7 dips 6. 200 proof Ethanol-10 dips 7. 1% Alcoholic Eosin-2 quick dips 8. 200 proof Ethanol-4 containers-10 dips each 9. 200 proof Ethanol-1 container-1 minute 10.Xylene Substitute-Histosolve for 30 secs to a minute or longer. Coverslip with Histosolve and a Xylene Substitute mounting media-Histomount I get all my reagents except Ethanol from Shandon and have been very happy with staining quality. Any ideas! Thanks in ...
For implantable devices, Parylene C (hereafter referred to as Parylene) has shown promising properties such as flexibility, biocompatibility, biostability, and good barrier properties. Parylene-based flexible interconnection cable (FIC) was previously developed to connect a flexible penetrating microelectrode array (FPMA) with a recording system. However, Parylene-based FIC was difficult to handle and prone to damage during the implantation surgery because of its low mechanical strength. To improve the mechanical properties of the FIC, we suggest a mechanically enhanced flexible interconnection cable (enhanced FIC) obtained using a combination of Parylene and polyimide. To investigate the long-term stability of the enhanced FIC, Parylene-only FIC, and enhanced FIC were tested and their mechanical properties were compared under an accelerated aging condition. During the course of six months of soaking, the maximum strength of the enhanced FIC remained twice as high as that of the Parylene-only ...
-Xylene; Nonane; 1,2,4-Trimethylbenzene; Decane; 1,2,3-Trimethylbenzene; Undecane; Durene; Naphthalene; 2-Methylnaphthalene solution; 1-Methylnaphthalene
TY - JOUR AU - Jovanovic, T. AU - Koruga, Dj. AU - Jovančićević, Branimir AU - Vajs, Vlatka AU - Dević, Gordana PY - 2013 UR - http://cer.ihtm.bg.ac.rs/handle/123456789/1300 AB - The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84, were extracted by original procedures, with p-xylene and the mixture of xylenes from the samples of initial carbon soot, produced in electrical arc. The extracts were obtained in increased and high yields of 6% and 11.9%, respectively, due to application of the advanced procedures. The solubility of fullerenes in these solvents was compared. Chromatographic separation of the basic and the higher fullerenes from the obtained p-xylene extract was performed by continue elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to 75% toluene in hexane, on active Al2O3 column, by a new, improved method. Comparative spectroscopic characterization of the obtained purified fullerene ...
Complete article is available online.. PDF version is available online.. Purpose: To determine the precision and cost-effectiveness of the pHydrion(TM) ammonia test relative to the Draeger(TM) volumetric pump/ammonia detector tube method in measuring ammonia concentrations in swine barns.. Methods: Ammonia concentrations in farrowing, nursery, finisher, and gestating barns were monitored for 8 weeks using both the pHydrion(TM) test strips and the Draeger(TM) unit. The ammonia measurements were compared using bivariate correlation analysis. Average ammonia concentrations in each barn type were compared using an ANOVA. The precision and cost-effectiveness of each assay were demonstrated by plotting the width of the confidence interval by the number of dollars available for ammonia detection, as well as by the number of tests performed.. Results: The mean ammonia concentrations differed by room type (P ,.05) and increased in the following order: nursery, farrowing, gestating, and finishing rooms. ...
Xylenol Orange, sodium salt, Acros Organics™ Glass bottle; 5g Xylenol Orange, sodium salt, Acros Organics™ Amino Acids
Environmental and Occupational Diseases could be grouped as follows: 1. Diseases caused by chemical agents. 1.1 Disease caused by benzene or its toxic homologues. 1.2 Disease caused by toluene or its toxic homologues. 1.3 Disease caused by styrene or its toxic homologues. 1.4 Disease caused by xylene or its toxic homologues. 1.5 Disease caused by cadmium or its toxic compound. 1.6 Disease caused by chromium or its toxic compound. 1.7 Disease caused by manganese or its toxic compound. 1.8 Disease caused by arsenic or its toxic compound. 1.9 Disease caused by mercury or its toxic compound. 1.10 Disease caused by mercury or its toxic compound. 1.11 Diesease caused by chlorine. 1.12 Disease caused by ammonia. 1.13 Disease caused sulphur dioxide or sulphuric acid. 1.14 Disease caused by carbon monoxide. 1.15 Disease caused by hydrogensulphide. 1.16 Disease caused by pesticides. 2. Diseases caused by physical agents. 2.1 Hearing impairment caused by noise. 2.2 Disease caused by heat radiation. 3. ...
0230]In a 2-L autoclave were charged 381 g of toluene and 136 g of 1,3,5,7-tetramethylcyclotetrasiloxane. After the gas phase was substituted with nitrogen, the mixture was heated while stirring at an internal temperature of 60° C. Thereto was added a mixed solution of 100 g of vinylcyclohexeneoxide(1,2-epoxy-4-vinylcyclohexane), 100 g of toluene and 0.0262 g of a solution of a platinum vinylsiloxane complex in xylene (containing 3 wt % by platinum) dropwise over 60 min. After completing the dropwise addition, the internal temperature was elevated to 70° C., and the reaction was allowed for 60 min. The reaction rate of the vinyl group was then determined with 1H-NMR to be no less than 95%. The internal temperature was elevated to 105° C., and a mixture of 44.5 g of triallyl isocyanurate, 44.5 g of toluene and 0.0174 g of a solution of platinum vinylsiloxane complex in xylene (containing 3 wt % by platinum) was added dropwise over 40 min. After completing the dropwise addition, the internal ...
Dy-Mark Australia has for over 50 years, been a manufacturer of Paints, Markers, Stencilling, Inks & Dyes, Surface Protection, Cleaners & Lubricants, Decorations and Industrial Packaging. Dy-Mark has four catergories; Marking Products, Protective & Decorative Coatings, Cleaners & Lubricants and Industrial Packaging to help guide you.
MIME-version: 1.0 X-Mailer: Unknown (No Version) Content-type: multipart/alternative; boundary=Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) --Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Hello all. I could really use some help. Today, the pathologist called to say that she is seeing an artifact on the tissue. It looks like clusters of fine PCP organisms, only that they are not. Like someone took a very fine tip black marker and made circles around the cells. She said it is not on every slide. The slides she had me check were prostate needle bxs and an antrum bx. The only change in our routine has been that we are demonstrating a recycling system for alcohol and Xylene. I have not used the recycled product on the tissue processor or the H&E autostainer, but I have placed the recycled Xylene in our glass Coverslipper. I appreciate any and all comments. Thank you. Ryan Allan Memorial --Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) Content-type: ...
The consequences of acute xylene publicity to the enkephalinergic neuromodulatory technique were studied in rats. Male Sprague-Dawley rats have been injected ip with 0 or 1.6 mL/kg xylene every day for three consecutive times. 3 hr following the last dose, they ended up killed and also the brains were being eradicated. The brains ended up dissected in the parietal cortex. caudate putamen, medial preoptic regions of the hypothalamus, globus pallidus, olfactory tubercle, and central amygdaloid nuclei (CA). The assorted Mind components were being analyzed for improvements of their met-enkephalin content by an immunostaining procedure ...