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As-mineral-humic substance interactions [Elektronische Ressource] : influence of natural organic matter on sorption and mobility of As / vorgelegt von Prasesh Sharma : As-mineral-humic substance interactions - Influence of natural organic matter on sorption and mobility of As Dissertation zur Erlangung des Grades eines Doktors der Naturwissenschaften der Geowissenschaftlichen Fakultät der Eberhard Karls Universität Tübingen vorgelegt von Prasesh Sharma Kathmandu, Nepal 2010 Tag der mündlichen

Quantification of Zonula Occludens-1 mRNA expression in cultu-red bovine retinal endothelial cells, using SYBR green real-time PCR, Sekaran Muniandy, Koon Chu Yaiw, Jack Bee Chook,

The 2016-2021 World Outlook for Mixed Synthetic Organic Chemicals for Use As Flavor and Perfume Materials The 2016-2021 World Outlook for Mixed Synthetic Organic Chemicals - Market research report and industry analysis - 9128739

Slovenia Imports of Organic chemicals was US$867.32 Million during 2018, according to the United Nations COMTRADE database on international trade. Slovenia Imports of Organic chemicals - data, historical chart and statistics - was last updated on February of 2020.

DNA microarray technology is a high throughput technique by which the expression of the whole genome is studied in a single experiment. In dual label experiments the fluorescent dyes Cy 3 and Cy 5 are used to label the two RNA samples co-hybridized on a same array. Recently two more dyes have been proposed (Alexa 488 and Alexa 594) allowing the simultaneous hybridization of three or four samples. Forster et al. [2] have evaluated triple-target microarray by comparing results of single-target, dual-target and triple-target microarrays. They have concluded that the use of triple-target microarray is valid from an experimental point of view. One year later, Staal et al. [7] have investigated the four-target microarray experiments. Their approach differs from that of [2], but their conclusions are in fair agreement. Their study has shown that Alexa 594 is best suited as a third dye and that Alexa 488 can be applied as a fourth dye on some microarray types. These extensions of the microarray ...

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Natural organic matter (NOM) represents a complex molecular system that cannot be fully characterized compositionally or structurally in full atomistic detail. This makes the application of molecular modeling approaches very difficult and significantly hinders quantitative investigation of NOM properties and behavior by these otherwise very efficient computational techniques. Here we report and analyze three molecular dynamics (MD) simulations of Ca2+ complexation with NOM in aqueous solutions in an attempt to quantitatively assess possible effects of model- and system size-dependence in such simulations. Despite some obvious variations in the computed results that depend on the size of the simulated system and on the parameters of the force field models used, all three simulations are quite robust and consistent. They show Ca2+ ions associated with 35-50% of the NOM carboxylic groups at near-neutral pH and point to a strong preference for the stability of bidentate-coordinated contact ion pairs. The

Natural organic matter (NOM) from seawater is a complex mixture of compounds that has only been roughly characterized. In this study, advanced techniques such a

Introduction: Propionibacteriaceae (Propioni) are anaerobic bacteria associated with human and animal infections. Todays methods of diagnosis for Propioni are unsatisfactory due to lack of sensitivity of culture, time required for culture results (3 to 14 days) and difficulties for interpretation of SYBR Green real-time PCR results. The goal of this work was to validate a new rapid and sensitive test for the diagnosis of Propioni infections (endophthalmitis, corneal ulcers and others).. Material and methods: DNA was extracted using the MagNA Pure® isolation kit (Roche) and bacterial detection and quantification was carried out with a set of original primers and probe (5ATACGTAGGGTGCGAGCGTTGTCC; 5TGGTGTTCCTCCTGATATCTGCGC and [Amino C6+JOE]-GATCGCGTCGGAAGTGTAATCTTGGGG-Black Hole Quencher). PCR cycling program consisted in one cycle at 95°C, 20 sec and 45 cycles at 95°C, 3 sec and 30 sec at 60°C. DNA extraction yields were assessed in the same tube.. Results: This test detects as few as 0.01 ...

Galeano, Luis-Alejandro Y Luna, Crhistian Y Vicente, M. Angel Y Bravo, P.F Y Gil, Antonio Y Rosero, M. Y Delgado, S. Ximena Y Rodriguez, G. (2011) Removal of natural organic matter from a surface feedstock for drinking water production by Al/Fe-PILC - catalyzed wet peroxide oxidation: Effect of catalyst preparation from concentrated precursors. In: IWA Specialist Conference, Mayo, 2011, Valladolid, España.. ...

C. E. Gerwe, Lawler, D. F., Speitel Jr, G. E., Katz, L. E., and Bennett, P. C., Natural Organic Matter (NOM) Adsorption onto and Coprecipitation with Solids Formed during Softening, Annual Conference Proceedings. American Water Works Association, 2003 ...

13) Record the following: type of smartphone used, the distance from the base of the smartphone cradle to the measurement device (in cm), and attach one image for each position of the drop (5 images total). After assembling the fluorimeter, you can now determine if youve amplified the targeted DNA in your PCR experiment. Using the Fluorimeter, you can calculate the relative amount of DNA through fluorescence, which is generated by excitation and emission wavelengths. In order to detect fluorescence when dsDNA is present, youll be using SYBR Green I because its more safer compared to other dyes. With that being said, gloves must be worn when handling any liquid containing SYBR Green I. The fluorimeter itself is a very simple machine because it uses optical caustic, a special type of optics that completely removes the need for lasers, mirrors, or lenses. Also the flourimeter is battery-powered, lightweight and portable; this allows every student to have one of these at their lab table. ...

This report clearly demonstrates the feasibility of a fluorescence-based assay for high-throughput screening of antimalarials. The results of this malaria SYBR Green I-based fluorescence (MSF) assay were in agreement with those of the [3H]ethanoloamine assay, and the level of fluorescence was shown to have a direct, linear correlation with the level of parasitemia. The drugs tested in this study are varied in their structures, mechanistic actions, and potencies; and the range of parasitemia tested for fluorescence linearity includes the entire realistic range encountered in a 48-h assay under our starting conditions. On the basis of this side-by-side comparison, these observations suggest that the assay will be broadly applicable, and that has been our experience. In fact, in our laboratory the MSF assay has replaced assays that use radioisotopes and has been used to perform several hundred assays involving a wide range of experimental conditions.. The determination of EC50s by the MSF assay ...

Method 525.3 was developed by the US EPA for the determination of semi-volatile organic chemicals in drinking water. This is an analytical method that uses solid phase extraction (SPE) and gas chromatography/mass spectrometry (GC/MS) for the identification and quantitation of 123 selected compounds. These compounds range from polychlorinated biphenyls (PCBs), poly aromatic hydrocarbons (PAHs), and pesticides. The standards can be purchased individually or as a complete set for your laboratorys particular needs. Additionally, the required surrogate and internal standards are also offered.

Renovation of small-sized second-hand housing Cleverly loaded 54 flat mix fine pink nest Doors to buy doors and windows hardware window decorative door price decoration Other Organic Chemicals Other Organic Chemicals are chemmical materials except Alcohol And Hydroxybenzene, Benzene and Derivatives, Ester And Derivatives, Organic Acid , Organic Salt etc. The Other Organic Chemicals industry has experienced the cyclical adjustment of the previous round of the overall downturn, the basic chemical products have realized the cycle contraction of the production capacity, while the continuous pressure of environmental policies and the continued advance of the supply side reform have intensified the contraction of the supply of the industry and promoted the rise of the product price. At the same time, under the influence of policy, the prosperity of large chemical industry is at an upward stage. Other Organic Chemicals Attention: [ operation notice] Closed operation, local exhaust. Operators must ...

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Genotoxic compounds form covalently bound adducts with DNA, a process which could lead to mutagenesis and carcinogenesis. In this dissertation, methods that can be used to screen organic chemicals for genotoxicity were developed. The first method employs DNA-polyion films, neutral thermal hydrolysis of these films, and liquid chromatography-mass spectrometry (LC-MS) to quantify DNA adducts of molecules that interact directly with DNA. Neutral thermal hydrolysis provides a simple sample preparation procedure for N7-guanine and N3-adenone adducts because these adducts are selectively ejected from the DNA chain, resulting in a clean sample matrix enriched in nucleobase adducts. Coupling neutral thermal hydrolysis with LC-MS provides sensitive methods to detect and quantitate DNA adducts, and structural information is provided by MS. Neutral hydrolysates of DNA-polyion films used in voltammetric genotoxicity screening sensors were analyzed by LC-MS. Results showed that concentrations of N7-guanine DNA

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The organic chemicals that help cell membranes to conserve internal fluids are _____. hormones phospholipids amino acids proteins

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When I was in college during the late 1980s, I remember one of my chemistry professors telling me that he disposed of organic chemical waste by just pouring it in his gas tank and burning it along with the gasoline...

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Perform reliable qPCR with Bio-Rads pre-validated rhbdl2 primer pair, for the Zebrafish genome. Designed for SYBR Green-based detection.

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Two different real-time polymerase chain reaction (PCR) detection approaches based on SYBR Green I dye and Taqman probe based assays were developed for the detection and differentiation of infectious bursal disease virus (IBDV) subtypes. Both approaches were able to detect and differentiate IBDV subtypes based on the use of subtype-specific primers or subtype-specific probes where the primers were designed based on single nucleotide polymorphism (SNP) concept. After optimization of the primer combinations and PCR parameters, very virulent-specific primer, IF & IVIR, and classical-specific primer, IF & RCLA were used in the SYBR Green I real-time RT-PCR assay. Plasmid DNA carrying the VP4 gene of the references IBDV strains: very virulent strain UPM94/273 and classical strain D78 were established and used as positive controls in the real time RT-PCR. The developed assay had a dynamic detection limit which spans over 5 log10 concentration range for very virulent and spans over 7 log10 ...

Abstract: : Purpose: Our previous investigations proved that conjunctival impression cytology (CIC) is a valid, non-invasive technique that is useful to detect mRNA levels of ocular mucin genes in healthy individuals. This study was designed to perform the relative quantitation of MUC1, 2, 4, 5AC and 7 mucin genes in CIC samples from healthy males and females, younger and older of 60 years of age. Methods: Two polyethersulfone filters were applied to the superior bulbar conjunctiva of 38 healthy donors. Two age categories were considered: less that 60 years (7 males, 7 females), and 60 years or older (15 males, 9 females). Real time RT-PCR was performed using total RNA to examine the expression of MUC1, 2, 4, 5AC and 7. Their relative quantity was determined by SYBR® Green I dye detection. The housekeeping gene GAPDH was used to normalize the amount of expression levels. Data of mucin genes were analyzed using a logarithmic transformation to obtain a distribution closer to the normal ...

TY - JOUR. T1 - Quantitative structure-activity relationships for primary aerobic biodegradation of organic chemicals in pristine surface waters. T2 - starting points for predicting biodegradation under acclimatization. AU - Nolte, Tom M.. AU - Pinto-Gil, Kevin. AU - Hendriks, A. Jan. AU - Ragas, Ad M. J.. AU - Pastor, Manuel. PY - 2018/1. Y1 - 2018/1. KW - ACTIVITY-RELATIONSHIP MODELS. KW - MICROBIAL-DEGRADATION. KW - BIOTRANSFORMATION MODELS. KW - EMERGING CONTAMINANTS. KW - BACTERIAL CONSORTIUM. KW - ENVIRONMENT. KW - FATE. KW - PHARMACEUTICALS. KW - TRANSFORMATION. KW - KINETICS. U2 - 10.1039/c7em00375g. DO - 10.1039/c7em00375g. M3 - Article. VL - 20. SP - 157. EP - 170. JO - Environmental Science - Processes & Impacts. JF - Environmental Science - Processes & Impacts. SN - 2050-7887. IS - 1. ER - ...

Author: Pandey, S. et al.; Genre: Journal Article; Published in Print: 2002-02-21; Title: The photophysics of 6-(1-pyrenyl)hexyl-11(1-pyrenyl)undecanoate dissolved in organic liquids and supercritical carbon dioxide: Impact on olefin metathesis

A digital neutron-γ imaging technique for mixed radiation field is described. The imaging system is based upon an organic liquid scintillator detector, a narrow tungsten collimator, fast digitiser and adjustable equatorial mount. Radioactive sources have been attached to a vertical plane and the digitiser has been used to digitise neutron and γ events. The digitised events have been discriminated using pulse gradient analysis and images have been generated of the count distribution in the source plane.. ...

Article Reduction of natural organic matter by an electrolytic process, conventional coagulation and direct descending filtration in a pilot-scale water treatment system. Recently, alternative water treatment systems have been implemented due to the ...

Metal-organic frameworks (MOFs) are some of the most exciting materials in current science. Their utility and diversity of applications depends on a combination of their chemistry, their framework topology and the spatial dimensions of their pores. In this review we concentrate on the chemistry of MOFs. Spec Metal-organic frameworks and porous polymers - current and future challenges

Kipka, U. and Di Toro, D. M. (2011), A linear solvation energy relationship model of organic chemical partitioning to particulate organic carbon in soils and sediments. Environmental Toxicology and Chemistry, 30: 2013-2022. doi: 10.1002/etc.611 ...

This study compared three methods of breath sampling for assessment of exposure to volatile organic chemicals. Eleven healthy volunteers were exposed to four of these five chemicals: ethanol, acetone, methyl isobutyl ketone (MIBK), toluene, and halothane. After exposure, venous blood and mixed-exhaled breath, end-exhaled breath, and rebreathed gas were sampled ten times in four hours. The relationship between the concentrations of these chemicals in blood and each type of breath were calculated by linear regression. The calculated blood/gas partition coefficients and the goodness of fit for each breath sampling method were compared in order to evaluate which type of breath sample could best be used to predict blood concentrations. The effect of carbon dioxide correction and the effect of lung function on this relationship were investigated. Rebreathed gas concentrations predicted blood concentrations as well as end-exhaled concentrations and in most cases better than mixed-exhaled concentrations ...

The present invention is directed to providing a method of producing synthetic fuels and organic chemicals from atmospheric carbon dioxide. Carbon dioxide gas is extracted from the atmosphere, hydrogen gas is obtained by splitting water, a mixture of the carbon dioxide gas and the hydrogen gas (synthesis gas) is generated, and the synthesis gas is converted into synthetic fuels and/or organic products. The present invention is also directed to utilizing a nuclear power reactor to provide power for the method of the present invention.

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Dettenmaier, EM, Doucette WJ, Bugbee, B. 2008. Re-examining the relationship between plant uptake of organic chemicals and octanol water partition coefficients. Presented in a platform session at the 18th Annual AEHS Meeting and West Coast Conference on Soils, Sediments, and Water. San Diego, CA, March. 10-13.. ...

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0048] The dielectric core 48 is similar in construction to the dielectric core 52 depicted in FIGS. 5 and 6. However, the dielectric core 48 exemplifies an alternative dielectric core construction in that the dielectric core 48 includes a high dielectric constant elastomeric layer 49. The high dielectric constant elastomeric layer 49 may be constructed in the manner as disclosed above, exemplarily as a silicone elastomer with barium titanate particulates. The dielectric core 48 further includes an insulative support layer 47. The insulative support layer 47 runs the entire length of the organic chemical sensor 60 and thus provides additional support to the conductive layers 62, 64 and the high dielectric constant elastomeric layer 49. The insulative support layer 47 further assures that there is no electrical conductive path (e.g. pin hole) through the dielectric core 48 between the permeable conductive layer 62 and the electrically conductive layer 64. The insulative support layer 47 further ...

Get this from a library! Occurrence and distribution of organic chemicals and nutrients and comparison of water-quality data from public drinking-water supplies in the Columbia Aquifer in Delaware, 2000-08. [Betzaida Reyes; Delaware. Department of Natural Resources and Environmental Control.; Delaware Geological Survey.; Geological Survey (U.S.)]

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Development of an aerosol mass spectrometer for size and composition analysis of submicron particles, J.T. Jayne, D.C. Leard, X. Zhang, P. Davidovits, K.A. Smith, C.E. Kolb, and D.R. Worsnop, Aerosol Sci. Technol., 33, 49-70, 2000.. Ambient Aerosol Sampling with an Aerosol Mass Spectrometer, J. L. Jimenez, J. T. Jayne, Q. Shi, C.E. Kolb, D.R. Worsnop, I. Yourshaw, J.H. Seinfeld, R.C. Flagan, X. Zhang, K.A. Smith, J. Morris, and P. Davidovits, J. Geophys. Res. - Atmospheres, 108, (D7), 8425, doi:10.1029/2001JD001213, 2003.. A new Time-of-Flight Aerosol Mass Spectrometer (ToF-AMS) - Instrument Description and First Field Deployment, F. Drewnick, S.S. Hings, P.F. DeCarlo, J.T. Jayne, M. Gonin, K. Fuhrer, S. Weimer, J.L. Jimenez, K.L. Demerjian, S. Borrmann, D.R. Worsnop. Aer. Sci. Technol., 39, 637-658, 2005.. A Field-Deployable High-Resolution Time-of-Flight Aerosol Mass Spectrometer, P. F. DeCarlo, J.R. Kimmel, A. Trimborn, M.J. Northway, J.T. Jayne, A.C. Aiken, M. Gonin, K. Fuhrer, T. Horvath, ...

A nonrandom group of 40 volunteers participated in a study to determine the level of correlation between three methods of sampling for volatile organic compounds (VOC): organic vapor badges, charcoal tubes, and blood VOC levels. Each of 40 volunteers provided blood samples for analysis. Nineteen subjects wore organic vapor badges for at least 5 hours, and 24 subjects provided personal breathing zo

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The site‐selective reaction of a multifunctional linear molecule requires a suitable catalyst possessing both uniform narrow channel to limit the molecule rotation and a designed active site in the channel. Recently, nanoparticles (NPs) were incorporated in metal-organic frameworks (MOFs) with the tailorable porosity and ordered nanochannel, which makes these materials (NPs/MOFs) highly promising candidates as catalytic nanoreactors in the field of heterogeneous catalysis. Inspired by a Gondola sailing in narrow Venetian Canal without sufficient space for a U‐turn, a simple heterogeneous catalyst based on NPs/MOFs is developed that exhibits site‐selectivity for the oxidation of diols by restricting the random rotation of the molecule (the Gondola) in the limited space of the MOF channel (the narrow Venetian Canal), thereby protecting the middle functional group via steric hindrance. This strategy is not limited to the oxidation of diols, but can be extended to the site‐selective ...

Metal-organic frameworks (MOFs) have potential as air quality treatment media for various gaseous pollutants (e.g., ammonia) through diverse mechanisms (capture and catalytic degradation). A broad range of MOFs have been developed with numerous advantageous properties (e.g., high surface area, high degree of

In the past few years, numerous studies have demonstrated the great potential of nano particles of metal-organic frameworks (nanoMOFs) at the preclinical level for biomedical applications. Many of them were reported very recently based on their bioactive composition, anticancer application, or from a general drug delivery/theranostic perspective. In this review, the authors aim at providing a global view of the studies that evaluated MOFs biomedical applications at the preclinical stage, when in vivo tests are described either for pharmacological applications or for toxicity evaluation. The authors first describe the current surface engineering approaches that are crucial to understand the in vivo behavior of the nanoMOFs. Finally, after a detailed and comprehensive analysis of the in vivo studies reported with MOFs so far, and considering the general evolution of the drug delivery science, the authors suggest new directions for future research in the use of nanoMOFs for biomedical ...

Nanoporous materials, such as metal-organic frameworks (MOFs), enable the separation of various molecular mixtures. Thus, detailed knowledge of multi-component…

dd excitations in CPO-27-Ni metal-organic framework: comparison between resonant inelastic X-ray scattering and UV-vis spectroscopy.: We identify the dd excitat

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OK it is this time of year again, and time to teach organic chemistry to the first year chem eng students. Now before we get going I want to tell you a story about a man and his wife who wake up one morning in a world where organic compounds have suddenly stopped existing and doing…

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The RT² qPCR Primer Assay is the most reliable SYBR® Green-based quantitative real-time PCR assay for gene expression analysis. Our experimentally verified design algorithm yields gene-specific qPCR assays characterized by uniform and high PCR efficiencies and standardized amplification conditions. Every RT² Primer Assay is subjected to rigorous experimental verification. Single product amplification of the correct size and high PCR efficiency are guaranteed when using the appropriate RT² qPCR Master Mixes. The uniform PCR amplification efficiencies and PCR conditions of the RT² qPCR Primer Assays provide an accurate and scalable solution for multiple gene expression analyses. Browse Primer Assays By Gene ...

The RT² qPCR Primer Assay is the most reliable SYBR® Green-based quantitative real-time PCR assay for gene expression analysis. Our experimentally verified design algorithm yields gene-specific qPCR assays characterized by uniform and high PCR efficiencies and standardized amplification conditions. Every RT² Primer Assay is subjected to rigorous experimental verification. Single product amplification of the correct size and high PCR efficiency are guaranteed when using the appropriate RT² qPCR Master Mixes. The uniform PCR amplification efficiencies and PCR conditions of the RT² qPCR Primer Assays provide an accurate and scalable solution for multiple gene expression analyses. Browse Primer Assays By Gene ...