Red dye, pH indicator, and diagnostic aid for determination of renal function. It is used also for studies of the gastrointestinal and other systems.
A family of 3,3-bis(p-hydroxyphenyl)phthalides. They are used as CATHARTICS, indicators, and COLORING AGENTS.
An antiseptic and disinfectant aromatic alcohol.
Amounts charged to the patient as payer for medical services.
Benzene derivatives that include one or more hydroxyl groups attached to the ring structure.
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
Negative ions or salts derived from bromic acid, HBrO3.
Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.
The means of moving persons, animals, goods, or materials from one place to another.
The discarding or destroying of garbage, sewage, or other waste matter or its transformation into something useful or innocuous.
Bovine respiratory disease found in animals that have been shipped or exposed to CATTLE recently transported. The major agent responsible for the disease is MANNHEIMIA HAEMOLYTICA and less commonly, PASTEURELLA MULTOCIDA or HAEMOPHILUS SOMNUS. All three agents are normal inhabitants of the bovine nasal pharyngeal mucosa but not the LUNG. They are considered opportunistic pathogens following STRESS, PHYSIOLOGICAL and/or a viral infection. The resulting bacterial fibrinous BRONCHOPNEUMONIA is often fatal.
Large vessels propelled by power or sail used for transportation on rivers, seas, oceans, or other navigable waters. Boats are smaller vessels propelled by oars, paddles, sail, or power; they may or may not have a deck.
Individuals' concept of their own bodies.
Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.
A personality trait rendering the individual acceptable in social or interpersonal relations. It is related to social acceptance, social approval, popularity, social status, leadership qualities, or any quality making him a socially desirable companion.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Facilities which provide nursing supervision and limited medical care to persons who do not require hospitalization.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
Norms, criteria, standards, and other direct qualitative and quantitative measures used in determining the quality of health care.
Detection of drugs that have been abused, overused, or misused, including legal and illegal drugs. Urine screening is the usual method of detection.
A synthetic steroid that has been used for its anabolic action.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
Natural recurring desire for food. Alterations may be induced by APPETITE DEPRESSANTS or APPETITE STIMULANTS.
Increase in BODY WEIGHT over existing weight.
A sport in which weights are lifted competitively or as an exercise.
Mental processing of chromatic signals (COLOR VISION) from the eye by the VISUAL CORTEX where they are converted into symbolic representations. Color perception involves numerous neurons, and is influenced not only by the distribution of wavelengths from the viewed object, but also by its background color and brightness contrast at its boundary.
A vital dye used as an indicator and biological stain. Various adverse effects have been observed in biological systems.
Chemicals necessary to perform experimental and/or investigative procedures and for the preparation of drugs and other chemicals.
Substances added to pharmaceutical preparations to protect them from chemical change or microbial action. They include ANTI-BACTERIAL AGENTS and antioxidants.
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS.
A group of corticosteroids bearing a hydroxy group at the 11-position.
A major and the second most common isoform of apolipoprotein E. In humans, Apo E4 differs from APOLIPOPROTEIN E3 at only one residue 112 (cysteine is replaced by arginine), and exhibits a lower resistance to denaturation and greater propensity to form folded intermediates. Apo E4 is a risk factor for ALZHEIMER DISEASE and CARDIOVASCULAR DISEASES.
Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product.
A class of protein components which can be found in several lipoproteins including HIGH-DENSITY LIPOPROTEINS; VERY-LOW-DENSITY LIPOPROTEINS; and CHYLOMICRONS. Synthesized in most organs, Apo E is important in the global transport of lipids and cholesterol throughout the body. Apo E is also a ligand for LDL receptors (RECEPTORS, LDL) that mediates the binding, internalization, and catabolism of lipoprotein particles in cells. There are several allelic isoforms (such as E2, E3, and E4). Deficiency or defects in Apo E are causes of HYPERLIPOPROTEINEMIA TYPE III.
A degenerative disease of the BRAIN characterized by the insidious onset of DEMENTIA. Impairment of MEMORY, judgment, attention span, and problem solving skills are followed by severe APRAXIAS and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of SENILE PLAQUES; NEUROFIBRILLARY TANGLES; and NEUROPIL THREADS. (From Adams et al., Principles of Neurology, 6th ed, pp1049-57)
A contagious disease caused by canine adenovirus (ADENOVIRUSES, CANINE) infecting the LIVER, the EYE, the KIDNEY, and other organs in dogs, other canids, and bears. Symptoms include FEVER; EDEMA; VOMITING; and DIARRHEA.
Diseases of the domestic dog (Canis familiaris). This term does not include diseases of wild dogs, WOLVES; FOXES; and other Canidae for which the heading CARNIVORA is used.
Nucleotide sequences, generated by iterative rounds of SELEX APTAMER TECHNIQUE, that bind to a target molecule specifically and with high affinity.
A method of generating a large library of randomized nucleotides and selecting NUCLEOTIDE APTAMERS by iterative rounds of in vitro selection. A modified procedure substitutes AMINO ACIDS in place of NUCLEOTIDES to make PEPTIDE APTAMERS.
A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.
A methyl xanthine derivative from tea with diuretic, smooth muscle relaxant, bronchial dilation, cardiac and central nervous system stimulant activities. Theophylline inhibits the 3',5'-CYCLIC NUCLEOTIDE PHOSPHODIESTERASE that degrades CYCLIC AMP thus potentiates the actions of agents that act through ADENYLYL CYCLASES and cyclic AMP.
Compounds with a benzene ring fused to a thiazole ring.
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
Peptide sequences, generated by iterative rounds of SELEX APTAMER TECHNIQUE, that bind to a target molecule specifically and with high affinity.

Mechanism and specificity of the terminal thioesterase domain from the erythromycin polyketide synthase. (1/5815)

BACKGROUND: Polyketides are important compounds with antibiotic and anticancer activities. Several modular polyketide synthases (PKSs) contain a terminal thioesterase (TE) domain probably responsible for the release and concomitant cyclization of the fully processed polyketide chain. Because the TE domain influences qualitative aspects of product formation by engineered PKSs, its mechanism and specificity are of considerable interest. RESULTS: The TE domain of the 6-deoxyerythronolide B synthase was overexpressed in Escherichia coli. When tested against a set of N-acetyl cysteamine thioesters the TE domain did not act as a cyclase, but showed significant hydrolytic specificity towards substrates that mimic important features of its natural substrate. Also the overall rate of polyketide chain release was strongly enhanced by a covalent connection between the TE domain and the terminal PKS module (by as much as 100-fold compared with separate TE and PKS 'domains'). CONCLUSIONS: The inability of the TE domain alone to catalyze cyclization suggests that macrocycle formation results from the combined action of the TE domain and a PKS module. The chain-length and stereochemical preferences of the TE domain might be relevant in the design and engineered biosynthesis of certain novel polyketides. Our results also suggest that the TE domain might loop back to catalyze the release of polyketide chains from both terminal and pre-terminal modules, which may explain the ability of certain naturally occurring PKSs, such as the picromycin synthase, to generate both 12-membered and 14-membered macrolide antibiotics.  (+info)

Clinical and immunochemical study of the serum IgG fraction not precipitated in a zinc-sodium salicylate reagent. (2/5815)

A reagent made of zinc sulphate (0-08 M) in a 0-4 M sodium salicylate solution at pH 7-3 precipitated most of the IgG when a small volume of human serum was added. Sera with normal IgG levels or polyclonal hyperglobulinaemia showed a close correlation between total IgG and zinc-precipitated IgG (r = + 0-95). In clinical material, not including IgG myeloma, zinc-soluble IgG varied between 0 and 6 mg/ml and was independent of the IgG serum concentration. In 31 normal subjects the average IgG concentration, as determined by the Technicon immunonephelometric method, was 10-2 +/- 1-7 mg/ml for total IgG and 2-2 +/- 1-0 mg/ml for the soluble fraction. Among 173 sera, including 24 from cord blood, 16 from pregnant women, and 133 from patients with miscellaneous diseases, no pathological conditions except three cases of IgG myeloma were found with a zinc-soluble IgG definitely above the normal values; zinc-soluble IgG levels were often low in patients with hyperglobulinaemia, and the difference was highly significant in liver disease. kappa and gamma light chains as well as the four IgG-Hp chain subclasses were found in both zinc-soluble fractions of normal IgG. A study of myeloma monoclonal IgG showed that globulins of classes 1, 3, and 4 could be either soluble or insoluble in the zinc reagent. One, G2, was mainly insoluble. Hexose and antistreptolysin contents per milligram normal IgG were not significantly different in either fraction. It is suggested that zinc-soluble IgG consists of the recently synthesized molecules, the zinc-solubility of which has not yet been decreased by protein association, lipid interaction, antigen binding, or enzymatic denaturation. Within this hypothesis, a low level of soluble IgG would mean either an increased precatabolic protein or a decreased synthesis.  (+info)

Improved antibody detection by the use of range expansion and longer filter wavelength in a low ionic strength-protamine sulphate Auto-Analyzer system. (3/5815)

Range expansion, achieved by insertion of a variable resistance between the colorimeter and the recorder together with the use of 550 nm colorimeter filters, has resulted in markedly improved sensitivity for antibody detection, and improved sample identification, in a low ionic strength-protamine sulphate (LISPS) system. Range expansion also permits a lower concentration of red cells to be used, thus economizing on fully typed cells. Glycerol stored frozen cells were found to be only slightly less sensitive than fresh cells in this system.  (+info)

Light-induced calcium influx into retinal axons is regulated by presynaptic nicotinic acetylcholine receptor activity in vivo. (4/5815)

Visual activity is thought to be a critical factor in controlling the development of central retinal projections. Neuronal activity increases cytosolic calcium, which was hypothesized to regulate process outgrowth in neurons. We performed an in vivo imaging study in the retinotectal system of albino Xenopus laevis tadpoles with the fluorescent calcium indicator calcium green 1 dextran (CaGD) to test the role of calcium in regulating axon arbor development. We find that visual stimulus to the retina increased CaGD fluorescence intensity in retinal ganglion cell (RGC) axon arbors within the optic tectum and that branch additions to retinotectal axon arbors correlated with a local rise in calcium in the parent branch. We find three types of responses to visual stimulus, which roughly correlate with the ON, OFF, and SUSTAINED response types of RGC reported by physiological criteria. Imaging in bandscan mode indicated that patterns of calcium transients were nonuniform throughout the axons. We tested whether the increase in calcium in the retinotectal axons required synaptic activity in the retina; intraocular application of tetrodotoxin (10 microM) or nifedipine (1 and 10 microM) blocked the stimulus-induced increase in RGC axonal fluorescence. A second series of pharmacological investigations was designed to determine the mechanism of the calcium elevation in the axon terminals within the optic tectum. Injection of bis-(o-aminophenoxy)-N,N,N',N'-tetraacetic acid-AM (BAPTA-AM) (20 mM) into the tectal ventricle reduced axonal calcium levels, supporting the idea that visual stimulation increases axonal calcium. Injection of BAPTA (20 mM) into the tectal ventricle to chelate extracellular calcium also attenuated the calcium response to visual stimulation, indicating that calcium enters the axon from the extracellular medium. Caffeine (10 mM) caused a large increase in axonal calcium, indicating that intracellular stores contribute to the calcium signal. Presynaptic nicotinic acetylcholine receptors (nAChRs) may play a role in axon arbor development and the formation of the topographic retinotectal projection. Injection of nicotine (10 microM) into the tectal ventricle significantly elevated RGC axonal calcium levels, whereas application of the nAChR antagonist alphaBTX (100 nM) reduced the stimulus-evoked rise in RGC calcium fluorescence. These data suggest that light stimulus to the retina increases calcium in the axon terminal arbors through a mechanism that includes influx through nAChRs and amplification by calcium-induced calcium release from intracellular calcium stores. Such a mechanism may contribute to developmental plasticity of the retinotectal system by influencing both axon arbor elaboration and the strength of synaptic transmission.  (+info)

Purification and properties of a low-molecular-weight, high-alkaline pectate lyase from an alkaliphilic strain of Bacillus. (5/5815)

A low-molecular-weight, high-alkaline pectate lyase (pectate transeliminase, EC 4.2.2.2) was found in an alkaline culture of Bacillus sp. strain KSM-P15, purified to homogeneity, and crystallized. The enzyme had a relative molecular weight of approximately 20,300 as measured by sedimentation equilibrium, with a sedimentation coefficient (s20,w0) of 1.73 S. It was a basic protein with an isoelectric point of pH 10.3, and the alpha-helical content was only 6.6%. In the presence of Ca2+ ions, the enzyme degraded polygalacturonic acid in a random manner to yield 4,5-unsaturated oligo-galacturonides and had its optimal activity around pH 10.5 and 50-55 degrees C. It also had a protopectinase-like activity on cotton fibers. The N-terminal amino acid sequences of the intact protein (28 amino acids) and its two lysyl endopeptidase-cleaved peptide fragments (8 and 12 amino acids) had very low sequence similarity with pectate lyases reported to date. These results strongly suggest that the pectate lyase of Bacillus sp. strain KSM-P15 may be a novel enzyme and belongs in a new family.  (+info)

CLIP-170 highlights growing microtubule ends in vivo. (6/5815)

A chimera with the green fluorescent protein (GFP) has been constructed to visualize the dynamic properties of the endosome-microtubule linker protein CLIP170 (GFP-CLIP170). GFP-CLIP170 binds in stretches along a subset of microtubule ends. These fluorescent stretches appear to move with the growing tips of microtubules at 0.15-0.4 microm/s, comparable to microtubule elongation in vivo. Analysis of speckles along dynamic GFP-CLIP170 stretches suggests that CLIP170 treadmills on growing microtubule ends, rather than being continuously transported toward these ends. Drugs affecting microtubule dynamics rapidly inhibit movement of GFP-CLIP170 dashes. We propose that GFP-CLIP170 highlights growing microtubule ends by specifically recognizing the structure of a segment of newly polymerized tubulin.  (+info)

Sites of reaction of pilocarpine. (7/5815)

Analysis of the sites of reaction of a biologically important compound, pilocarpine, a molecule with imidazole and butyrolactone rings connected by a methylene bridge, has been accomplished in a quadrupole ion trap with the aim of characterizing its structure/reactivity relationships. Ion-molecule reactions of pilocarpine with chemical ionizing agents, dimethyl ether (DME), 2-methoxyethanol, and trimethyl borate (TMB), along with collision-activated dissociation elucidated the reaction sites of pilocarpine and made possible the comparison of structural features that affect sites of reaction. Based on MS/MS experiments, methylation occurs on the imidazole ring upon reactions with CH3OCH2+ or (CH3OCH2CH2OH)H+ ions but methylation occurs on the lactone ring for reactions with (CH3O)2B+ ions. Bracketing experiments with two model compounds, alpha-methyl-gamma-butyrolactone and N-methyl imidazole, show the imidazole ring to have a greater gas-phase basicity and methyl cation affinity than the lactone ring. The contrast of methylation by TMB ions on the lactone ring is explained by initial addition of the dimethoxyborinium ion, (CH3O)2B+, on the imidazole ring with subsequent collisional activation promoting an intramolecular transfer of a methyl group to the lactone ring with concurrent loss of CH3OBO. Semiempirical molecular orbital calculations are undertaken to further address the favored reaction sites.  (+info)

Do charge-remote fragmentations occur under matrix-assisted laser desorption ionization post-source decompositions and matrix-assisted laser desorption ionization collisionally activated decompositions? (8/5815)

The precursor ions of tetraphenylporphyrins that are substituted with fatty acids can be introduced into the gas phase by matrix-assisted laser desorption ionization (MALDI) and undergo post-source and collisionally activated decompositions (CAD) in a time-of-flight mass spectrometer. The goal of the research is to obtain a better understanding of post-source decompositions (PSD); specifically, we asked the question of whether ions undergoing PSD have sufficient energy to give charge-remote fragmentations along an alkyl chain. We chose the porphyrin macrocycle because we expected it to act as an inert "support," allowing the molecule to be desorbed by MALDI and to be amenable to charge-remote fragmentation. MALDI-PSD and MALDI-CAD spectra are similar to high-energy CAD spectra and considerably more informative than low-energy CAD spectra, showing that charge-remote fragmentations of the fatty acid moieties do occur upon MALDI-PSD and MALDI-CAD.  (+info)

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New, simple and cost effective spectrophotometric methods have been developed for the quality assessment of isoniazid (INH), in bulk and in pharmaceutical formulations by using novel reagents. The proposed methods involve the utility of ethyl 2-[(E)-(4-hydroxyphenyl) diazenyl]-3-oxobutanoate and benzil as novel reagents for the determination of INH. Developed methods are based on the condensation reaction of INH with reagents to give orange colored chromogen with an absorption band at 454 nm (for method A) and 436 nm (for method B). The applicability of these methods is demonstrated by the determination of the studied drug in commercial tablets and the results are statistically evaluated. The new procedures described in this paper are fast, convenient and have the novelty of carrying out the quantitative determination of INH in pure and in pharmaceutical formulation.
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Abstract. The coupling reagent ethyl 2-cyano-2-(2-nitrobenzenesulfonyloxyimino)acetate (o-NosylOXY) produces only byproducts that can be easily recovered and reused for the synthesis of the same reagent, making coupling reactions to yield amides, hydroxamates, peptides, and esters more environmentally friendly and cost-effective.. ...
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[[{type:media,view_mode:media_original,fid:4287,attributes:{alt:,class:media-image,typeof:foaf:Image}}]] We have improved the detection reagents used in our FluoroSpot assays. As of January 2, 2018, the new detection reagents are included in our FluoroSpot kits. The implemented changes only involve the tag/anti-tag reagents and do not affect the monoclonal antibodies or the biotin/streptavidin detection system.
Many chemicals are subject to strict legal stipulations.. Our offer is not directed toward consumers within the meaning of Section 13 of the German Civil Code (BGB), but exclusively toward companies (Section 14 of the German Civil Code), legal entities under public law or public-law special funds. Our products - insofar as a deviating agreement has not been reached - may not be used in unprocessed form as additives for foodstuffs or animal feed, medications for humans or animals, cosmetics or for in-vivo diagnostics purposes.. Notice: Your complete company data is required for purchasing chemicals. All new or additionally added addresses are initially examined by order processing. Please note that country-specific export restrictions apply to some products. ...
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Principal Investigator:OHRUI Hiroshi, Project Period (FY):1998 - 2000, Research Category:Grant-in-Aid for Scientific Research (B)., Section:一般, Research Field:Bioproduction chemistry/Bioorganic chemistry
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In recent years, amide coupling has become the most frequently used reaction in medicinal chemistry. However there are numerous reagents available.
Early buyers will receive 10% customization on reports.. This report studies the global chromatography reagents market for the forecast period of 2015 to 2020. This market is expected to reach USD 6.310 Billion by 2020 from USD 4.477 Billion in 2015, at a CAGR of 7.1%.. The global chromatography reagents market is segmented on the basis of types of reagents, applications, and regions.. Based on types, the chromatography reagents market is categorized into solvents, buffers, derivatization reagents, and ion pair reagents. In 2015, the solvents segment is estimated to account for the larger share of the chromatography reagents market.. Based on applications, the market is segmented into life sciences, environmental testing, food and beverage testing, and other application areas such as research, forensics, as a diagnostic tool, and applications in cosmetics, chemicals, oil, and petrochemical industries. Other application areas are expected to account for the largest share of the chromatography ...
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All reagents should be stored refrigerated (2-8°C). Return all reagents to 2-8°C promptly after use. Unopened reagents can be used for one year from the date of manufacture, as indicated by the expiration date on the package and bottle labels. Opened reagents can be used for one month if stored at 2-8°C ...
A multizone test device for the determination of analyte from a liquid test medium upon contact with the liquid test medium and a labeled reagent comprising a chemical group having a detectable chemical property. The test device preferably comprises multilayers including a reagent layer incorporated with an immobilized reagent and a detection layer incorporated with an immobilized form of an interactive detection reagent for the labeled reagent. The immobilized reagent in the reagent layer and the labeled reagent comprise specific binding partners which will bind to each other dependent upon the amount of analyte present. Labeled reagent which does not become bound to the immobilized reagent in the reagent layer migrates into the detection layer and interacts with the immobilized interactive detection reagent therein which results in the localized generation of a detectable reaction product which preferably is also immobilized in the detection zone. As a result, reverse migration of the labeled reagent,
All reagents should be stored refrigerated (2-8°C). Return all reagents to 2-8°C promptly after use. Unopened reagents can be used for one year from the date of manufacture, as indicated by the expiration date on the package and bottle labels. Opened reagents can be used for one month if stored at 2-8°C ...
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The Simons reagent actually consists of two reagents in two, separate bottles, marked A and B. Bottle A has a yellow label, and bottle B has a green label.. IMPORTANT: This test is to be used only after you have first received a positive result with Mandelin, Mecke or Marquis reagent. It should never be used alone. Always use one of the other reagents first to identify the presence of a particular set of substances Only afterwards should you use this test.. IMPORTANT: Never have more than one reagent bottle open at a time. If you mix up the caps and put the wrong cap on the wrong reagent bottle, this may cross-contaminate the reagents and ruin them. Be sure to perform the tests in a well-lit location.. ...
A heterogeneous specific binding assay method for determining the amount of a suspected analyte in an aqueous test medium wherein a reaction mixture is formed by combining the test medium with assay reagents including a labeled reagent, an immobilizable component, and a binding substance which causes the immobilizable component to precipitate. Free and bound species of the labeled reagent are formed as a function of the amount of the analyte in the test medium. One of the free and bound species of the labeled reagent is immobilized by binding of the immobilizable component with the binding substance. The immobilized labeled reagent is seperated from labeled reagent which has not been immobilized, and the amount of label in the labeled reagent in one of the separated fractions is determined and related to the amount of analyte in the test medium. The improvement provided is the use of an immobilizable component comprising a water dispersible, aggregatable reagent comprising a binding partner for the one
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Improved volatility, better thermal stability or a lower limit of detection in gas chromatography with GC derivatization reagents from MACHEREY-NAGEL.
Buy Boc-Ala(3-pyridyl)-OH (CAS 117142-26-4) from P3 Biosystems, a US supplier of Alanine (Ala), Unusual Amino Acids, Amino Acids, Protected Amino Acids, Peptide Coupling Reagents, Solid Phase Synthesis Resins and Peptides
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In article ,199609231357.JAA11376 at mail.med.cornell.edu,, mf at aol.com (W) wrote: #hey netters: # Ive been working on a method to isolate proteins comprising a putative #complex using an antibody to a single known protein in the complex. Ive #prepared polyclonal antibodies to the target protein, then Ive affinity #purified these antibodies and coupled them to a protein A bed (using DMP #as a covalent coupling reagent). Then Ive taken extracts from appropriate #cells that we have previously shown express the target protein and passed #them across the bed to isolate the complex. At this point things have #gotten a little difficult. Eluates from the column have shown by western #that there is a very low yield of the target protein; moreover, when Ive #taken a small amount of the bed matrix and boiled in SDS-PAGE sample #buffer, I get the target protein in expected amounts. Taken together Ive #interpreted this data as an indication that the elution conditions Im #using (0.2N Acetic acid, ...
Our salts for analysis are manufactured under strict production guidelines. Analytical purity and best quality reliably characterize each batch. Salts in p.a. quality made by Carl ROTH meet the high requirements for reproducible results. Most of our salts are additionally specified according to international standards like ACS and ISO. ...
The Centre for AIDS Reagents (CFAR) is a non-for-profit reagent repository based at the National Institute for Biological Standards and Control (NIBSC). Our mission is to acquire, archive and disseminate valuable reagents to support HIV research. Reagents are obtained through generous donations from scientists, participation in EU-funded consortia, partnerships with private companies, and our collaboration with the NIH AIDS Reagent Program. Through this network, we hope to facilitate advancement in HIV research and encourage wider networking and knowledge sharing. ...
Reagents. Details of primary and secondary antibodies used in this study are shown in Supplemental Table 1. DHE was from Invitrogen. The SCP and Nox2tat ([H]-RKKRRQRRRCSTRVRRQL-[NH2]) were provided by PeptideSynthetics (Peptide Protein Research Ltd.). All other reagents and chemicals were from Sigma-Aldrich unless otherwise stated. Animals. Nox2KO mice on a C57BL/6J background were originally obtained from the Jackson Laboratory. Nox2KO mice lack phagocyte superoxide production and manifest an increased susceptibility to infection. Littermates of WT and Nox2KO mice were bred at the University of Surrey from heterozygotes and genotyped. Animals were housed under standard conditions with a 12-hour-light/12-hour dark cycle, and food and water were available ad libitum. Male mice were randomly grouped (n = 10-12/per group) and used at young age (3-4 months), middle age (11-12 months), and old age (20-22 months) for the experiments. Endothelial cell-specific expression (under the murine Tie2 ...
The paper was one of four published by my lab in early May in Science. Collectively, these papers, along with one in June 1984 in Lancet, convinced the scientific community that HIV (then called HTLV-III) was the cause of AIDS. We described the technique and results of the HIV blood test as well as made available HIV-producing cell lines, and other reagents for the global scientific community.. Our paper in Science described frequent detection and short term culture of HIV from 48 patients with AIDS or in people with conditions defined by CDC as at great risk for AIDS; no virus was detected in blood cells obtained from 115 healthy heterosexuals. Because of the great difficulties in isolating HIV at the time, due to the low number of T cells in blood of AIDS patients and the very limited number of virologists accustomed to culturing human T cells with interleukin-2 (IL-2), I believed verification would be painfully slow. Consequently, my colleagues and I realized that a safe, simple, sensitive ...
HsGAD67 ChIP primer (Forward) DNA RNA and cDNA datasheet (ab83614). Abcam offers quality products including antibodies, assays and other reagents.
Ion-pairing chromatography has traditionally been implemented with the addition of an ion-pairing reagent into the mobile phase. Here, an alternative method is presented, in which the ion-pairing reagent is deposited on column as a sample additive instead of in the mobile phase.
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216 S11-E2 Page 2 Name Key I. (9 points) Answer in the boxes below the following questions for the Grignard reagent C 3 -Mg. (1) (2 points) Is the carbon atom associated with magnesium electrophilic or
Grignard Reagents Market: Pharmaceutical Industry to Remain the Dominating End User Segment Throughout the Forecast Period: NAFTA and Europe Industry Analysis and Opportunity Assessment, 2016 - 2026
Organolithium reagents are organometallic compounds that contain carbon - lithium bonds. They are important reagents in organic synthesis, and are frequently used to transfer the organic group or the lithium atom to the substrates in synthetic steps, through nucleophilic addition or simple deprotonation. Organolithium reagents are used in industry as an initiator for anionic polymerization, which leads to the production of various elastomers. They have also been applied in asymmetric synthesis in the pharmaceutical industry. Due to the large difference in electronegativity between the carbon atom and the lithium atom, the C-Li bond is highly ionic. This extremely polar nature of the C-Li bond makes organolithium reagents good nucleophiles and strong bases. For laboratory organic synthesis, many organolithium reagents are commercially available in solution form. These reagents are highly reactive, and are sometimes pyrophoric. Studies of organolithium reagents began in the 1930 and were pioneered ...
COVID-19 antigen rapid detection reagent Chinese manufacturer GYF from Brand:gyf;Model:COVID-19-jiuxiang;specification:50pcs/box; Certification:ce; Certification:fda; Certification:cfda; accuracy:98%;
Samples containing unknown levels of analytes are incubated with the antibody-coated MACSPlex Capture Beads, and analytes bind to the specific antibody. Two detection reagents, composed of a cocktail of either biotin-conjugated or APC-conjugated antibodies specific for the analytes, are added. Consequently, sandwich complexes are formed between the MACSPlex Capture Beads, the analyte and the Detection Reagent Biotin while the Detection Reagent APC binds to the biotinylated detection antibodies. These complexes can be analyzed based on the fluorescence characteristics. Standards of known quantities of given analytes are provided with the kit and are used for the quantification of the analytes within the unknown samples ...
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With its low-profile support, Corning filtration systems deliver the lowest hold-up volume of any major brand to reduce the loss of valuable media and other reagents.. With its low-profile support, Corning filtration systems deliver the lowest hold-up volume of any major brand to reduce the loss of valuable media and other reagents.. Learn More ...
As part of our complete cell culture offering, Cornings comprehensive line of standard and custom media helps create an optimal environment for all stages of cell culture growth and scaling. Our broad selection of vessels, surfaces, and media support your research, development, and production needs.. Corning® sera products can help enhance your cell culture research with additions such as bovine serum albumin (BVA), hormones, growth factors, enzymes, lipids, trace elements, minerals, and nutrients. Our sera products are held to the highest level of sterility - all while meeting strict specifications for endotoxins, residual hemoglobin concentration, pH, and microbiological quality.. To achieve successful growth and consistency, media often requires nutrients, supplements, and other reagents specific to the application and cell type. Whether derived from plants or animals, or used for growing microorganisms, such as bacteria or yeast, our comprehensive line of supplements and reagents can help ...
Ong, Quyen, Hameyer, Helge, Handa, Sheetal and Jones, Keith (2001) Synthetic studies on morphine-based analgesics: an approach to angular substitution in 4a-aryldecahydroisoquinolines via dienolate chemistry. Tetrahedron Letters, 42(44), pp. 7879-7882. ISSN (print) 0040-4039 ...
Histofine® primary antibodies and ancillary reagents are developed by Nichirei Biosciences Inc. These primary antibodies designed to stain human tissue sections are compatible with FFPE tissue sections and used for histopathological analysis. Pretreatment methods and dilutions indicated in this catalog are recommended staining conditions using the Histofine® Simple Stain™ MAX PO (MULTI) detection reagent. For other detection reagents, optimization of staining conditions is recommended.. ...
A wide range of AmpMedia products are available for the detection and quantification of various microorganisms. All AmpMedia products are available ready to use in liquid form. AmpMedia are supplemented with different indicator systems. Selection of the appropriate indicator system is driven by the specific application. As the LabImager TR is capable of the detection of any colour change, alongside with ph- and Redox indicators, the whole currently and future available chromogenic indicator system can be used. Fluorogenic substrates can also be used when the uv-imager UV-detection system will be used for detection ...
System contamination is a significant issue for labs analyzing gamma-hydroxybutyrate (GHB) as typical methods include derivatization and liquid injection. Here, an acid conversion solvent extraction method is evaluated for compatibility with both headspace and liquid injection techniques. This extraction method can improve lab efficiency and reduce contamination by eliminating the use of derivatization reagents.
ATCC® Transfection reagents may be used for the transfer of nucleic acids for a variety of applications, including protein expression and the overexpression of mutant genes. Our transfection reagents are cationic lipid-based; due to their positive charge, these transfection reagents interact with the negatively charged backbone of nucleic acids and cell membranes. This effect, coupled with the hydrophobic nature of the associated lipids, allows the cationic lipid-DNA complex to be transported into eukaryotic cells. ATCC offers:. ...
Annexin V-Biotin Apoptosis Reagent (ab14165). Quick and reliable detection of phosphatidylserine exposure by flow cytometry or microscopy.
The inositol portion was synthesised using the key TA step which had an superb yield of 74% on using (only) 1 mol% catalyst loading, giving the desired diastereomer exclusively. This step has been improved upon the previously reported result (61% yield at 4 mol% catalyst loading). The attacment of the inositol portion to the B+C part was achieved using standard coupling reagents and on deprotection yielded Hygromycin A in 17 linear steps and 10% overall yield a great improvement over the previous synthesis ...
Proven, cost-efficient LANCE Ultra reagents can be used to quantitate peptide modifications, detecting specific meythylation and acetylation states. No wash, homogenous LANCE Ultra reagents are HTS friendly - design your own epigenetics screening strategy for greatest efficiency.. Epigenetic enzymatic assays are optimized using a biotinylated histone H3-derived peptide as substrate. The modified peptide is captured by the Eu-labeled antibody (Ab) and ULight-Streptavidin (SA) which bring the Eu donor and ULight acceptor dye molecules into close proximity. Upon irradiation at 320 or 340 nm, the energy from the Eu donor is transferred to the ULight acceptor dye which, in turn, generates light at 665 nm. The intensity of the light emission is proportional to the level of biotinylated substrate modification.. ...
Opal Polymer HRP Ms + Rb is a ready-to-use immunohistochemistry detection reagent specifically optimized for use with Opal and TSA® Plus detection reagents for maximum sensitivity, reduced incubation time and low background. This product reacts specifically with primary antibodies raised in mouse and rabbit and is part of a rapid, biotin-free detection protocol.
3-(diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one: a coupling reagent for mediating amide bond formation with little or no racemization; structure in first source
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Apparatus and methods for aspirating and dispensing reagents are provided. Aspirating of reagents is accomplished by a probe, a vial insert and reagent vial according to the present invention wherein a seal is formed between the probe and the vial insert when the probe engages the vial insert. Dispensing of reagents is accomplished by a probe and a probe dispense and wash station according to the present invention wherein a seal is formed between the probe and the vial insert when the probe engages the probe dispense and wash station.
Miyawaki and his team are currently using Scale to study mouse brains and neurons. However, they are not oblivious to the myriad other uses their new reagent has. In fact, they are working on creating similar reagents that are mild enough to use on living tissue. Maybe Ive read too much science fiction, but Im picturing a doctor painting a swab of reagent on a patients chest to look at his heart. Im pretty sure thats not how it would work though, mores the pity. ...
Alkaline Phosphatase Enhancer Reagents datasheet (ab671). Abcam offers quality products including antibodies, assays and other reagents.
One important observation about HCP immunoassays is that they occasionally give dilution-dependent results. Dilution dependence arises because the HCPs in the sample (perhaps one or a few HCPs) do not dilute in parallel with those in the standard (a mixture of 1000s of proteins). Limiting amounts of reagents can come in the form of coat, conjugate antibodies, or even Streptavidin-HRP that are associated with antigen excess and non-linear dilution behavior. It is advised to check all reagents to minimize impacts of reagent limitation sample dilution linearity. From a product purity perspective, however, sample dilution non-linearity is not an assay artifact but rather could be an important indication that a large amount of a particular HCP has co-purified with product. Phospholipase B-like 2 (PLBL2) was found to co-purify with multiple CHO-derived Mab products. It may be that this is a common impurity in Mabs produced across the biotech industry since it was found to have co-purified with ...
This product is composed of the Corona Virus COVID-19 specific dominant epitope antigen, fixed on a nitrocellulose specific membrane, a coloured latex-labelled anti-human IgM antibody release pad and other reagents. The latex immunochromatographic technology was used to detect the Corona ...
Description: Quantitativesandwich ELISA kit for measuring Human Interleukin-34(IL34) in samples from serum, plasma, tissue homogenates, cell culture supernates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits ...
Description: Quantitativesandwich ELISA kit for measuring Mouse Interleukin 17, IL-17 in samples from serum, plasma, tissue homogenates, cell culture supernates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits ...
Recombinant human SDF1 beta protein Full length protein datasheet (ab9800). Abcam offers quality products including antibodies, assays and other reagents.
The Thermo Scientific Pierce c-Myc Tag IP/Co-IP Kit provides the affinity resin and other reagents necessary to easily perform immunoprecipitation (IP) or co-immunoprecipitation (co-IP) experiments using a c-Myc-tagged protein as the bait.The c-Myc peptide (EQKLISEEDL) has become a popular fusion ta
This report contains market size and forecasts of Immunohistochemistry Reagent in global, including the following market information: Global Immunohistochemistry Reagent Market Revenue, 2016-2021, 2022-2027, ($ millions) Global Immunohistochemistry Reagent Market Sales, 2016-2021, 2022-2027, (K Units) Global top five Immunohistochemistry Reagent companies in 2020 (%) The global Immunohistochemistry Reagent market was valued at xx million in […]. ...
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Protein modification reagents such as SATA, HPG, Sulfo-NHS-Acetate, and Trauts Reagent are useful for adding labels to or blocking functional groups on proteins, peptides, and other molecules.
ClearChem Diagnostics offers a complete list of Drugs of Abuse reagents through Thermo Scientific. Drugs of Abuse reagents are performed for addiction treatment, medical determinations, and to provide a quick index of drug-related problem.
Performing CRISPR/Cas9 experiment using RNP? jetCRISPR is an innovative reagent designed to deliver gRNA and Cas9 protein into cells. Request your sample today!
Ferroin indicator changes from red to pale blue when oxidized.[1] Preparation of ferroin indicator reagent[edit]. A solution of ... During the titration the color of the indicator changes from a green hue to a bright blue hue to a reddish brown upon reaching ... Note: Ferroin indicator is bright red from commercially prepared sources, but when added to a digested sample containing ... Once all the excess dichromate has been reduced, the ferroin indicator changes from blue-green to a reddish brown. The amount ...
Benedict's reagent (reducing sugars etc). *Aniline acetate test (pentoses). *Starch indicator. *Molisch's test (carbs) ...
The compound was once used as an indicator reagent. Aqueous solution are yellow at low pH, reddish-purple in weakly acidic ... Murexide is used in analytical chemistry as a complexometric indicator for complexometric titrations, most often of calcium ...
"Colored Indicators for Simple Direct Titration of Magnesium and Lithium Reagents". Journal of Organometallic Chemistry. 9: 165- ... It is a colorimetric indicator for organolithium compounds. Nelson, Todd D.; Crouch, R. David (2004). "Cu, Ni, and Pd Mediated ...
indicators and reagents (en) , Cathartic (en) eta Edulkoratzaile. Arriskuak. NFPA 704. 1 ...
"pH measurements with indicators". Retrieved 29 September 2011. "Titrating Soluble RM, R2NM and ROM Reagents" (PDF) - via https ... Redox indicators are also used. A drop of indicator solution is added to the titration at the beginning; the endpoint has been ... Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of ... Small volumes of the titrant are then added to the analyte and indicator until the indicator changes color in reaction to the ...
Cobalticyanide paper (Rinnmann's test for Zn) can be used as a chemical indicator for zinc. 4 g of K3Co(CN)6 and 1 g of KClO3 ... Diethylzinc ((C 2H5) 2Zn) is a reagent in synthetic chemistry. It was first reported in 1848 from the reaction of zinc and ... These considerations must be balanced against the paucity of adequate zinc biomarkers, and the most widely used indicator, ... Knochel, Paul; Jones, Philip (1999). Organozinc reagents: A practical approach. ISBN 978-0-19-850121-3. Archived from the ...
... can also be used in place of Schiff reagent in quantitative Feulgen staining of DNA. It can also be used to mediate ... Thionine is a pH-dependent redox indicator with E0 = 0.06 at pH 7.0. Its reduced form, leuco-thionine, is colorless. When both ...
Starch is often used in chemistry as an indicator for redox titrations where triiodide is present. Starch forms a very dark ... A very sensitive reagent for iodines, found in starch (amidone)]. Annalen der Physik. 49 (1-2): 146-153. Bibcode:1815AnP....49 ... Naiman, Barnet (1937). "Preservation of starch indicator". Journal of Chemical Education. 14 (3): 138. Bibcode:1937JChEd..14.. ... "Kinetic Analysis of Amylase Using Quantitative Benedict's and Iodine Starch Reagents". Journal of Chemical Education. 85 (3): ...
It is a triazene dye used as a stain and fluorescent indicator in microscopy. It is also used as a reagent for the detection of ... As an acid-base indicator, it changes color from yellow to red between pH 12 and pH 13. Thiazole Yellow G at Sigma-Aldrich v t ...
The waves continue until the reagents are consumed. The reaction can also be performed in a beaker using a magnetic stirrer. ... Ferroin, a complex of phenanthroline and iron, is a common indicator. These reactions, if carried out in petri dishes, result ...
It is chosen under the spectrophotometric determination method and used as indicator because the reagent forms different ... Benedict's reagent Tollens' reagent Lucas' reagent Pill testing "spiro(3h-2,1-benzoxathiole-3,9'-(9h)xanthene)-3',4',5',6'- ... Bromopyrogallol red is commonly used in analytical chemistry as a spectrophotometric reagent and complexometric indicator. When ... Instead of an indicator, bromopyrogallol red is now used as a catalyst, and its reaction rate depends upon enzyme and substrate ...
Reagent testing uses chemical indicators that show a colour change in the presence of particular drugs. These tests are widely ... and Mecke reagents being used to detect MDMA and Ehrlich's reagent common for detecting LSD. However, reagent testing only ... This can provide a false sense of security when illicit drugs are deliberately adulterated to fool reagent tests. The presence ... DanceSafe have operated in the USA since 1998 providing reagent testing and harm reduction advice. More recent services include ...
Cobalticyanide paper (Rinnmann's test for Zn) can be used as a chemical indicator for zinc. 4 g of K3Co(CN)6 and 1 g of KClO3 ... 2Zn) is a reagent in synthetic chemistry. It was first reported in 1848 from the reaction of zinc and ethyl iodide, and was the ... Knochel, Paul; Jones, Philip (1999). Organozinc reagents: A practical approach. ISBN 0-19-850121-8. Archived from the original ... and the most widely used indicator, plasma zinc, has poor sensitivity and specificity.[212] Diagnosing zinc deficiency is a ...
Later, the filter is tested with Nessler's reagent (an ammonia indicator) and a spectrophotometer reads the amount of ammonia ... through the tube and ammonia sticks to the filters which can then be tested for NH3 concentrations using Nessler's reagent and ...
... (Gibbs reagent) is an organic compound used as an colorimetric indicator to detect phenolic ... Upon reaction with phenol itself, 2,6-dichlorophenolindophenol is formed, a chemical that is used as a redox indicator. Arip, ... Svobodová, D.; Křenek, P.; Fraenkl, M.; Gasparič, J. (1977). "Colour Reaction of Phenols with the Gibbs Reagent. The Reaction ... Gibbs reagent) with permethrin - an optical sensor for rapid detection of permethrin in treated wood". Chem Cent J. 7: 122. doi ...
Cell Assays reagents and kits (i.e. FluoProbes indicators, high sensitive viability assay UptiBlue) and an innovate ... Interchim is a privately owned French company specialized in manufacturing and distribution of reagents, consumables and ...
... is soluble in water and has applications as a coloring agent, biological stain, optical detecting reagent, and a pH ... indicator. One example would be the measurement of intracellular pH. Pyranine is also found in yellow highlighters, giving them ...
Chemical tests use reagents to indicate the presence of a specific chemical in an unknown solution. The reagents cause a unique ... If no visible change is present, an indicator is added to the solution. The indicator changes color based on the pH of the ... The amount of reagent required for a change to occur is proportional to the amount of the unknown substances. This reveals the ... A reagent with a known volume and concentration is added to a solution with an unknown substance and concentration. ...
... is an organic reagent, most commonly used as a tetrasodium salt as an indicator for metal titrations. When used ...
The activity of glutathione reductase is used as indicator for oxidative stress. The activity can be monitored by the NADPH ... consumption, with absorbance at 340 nm, or the formed GSH can be visualized by Ellman's reagent. Alternatively the activity can ...
Indicator-H+(Yellow) + Protein → Indicator(Blue-green) + Protein-H+ The major source of error with reagent strips occurs with ... Traditional reagent strip testing for protein uses the principle of the protein error of indicators to produce a visible ... Contrary to the general belief that indicators produce specific colours in response to particular pH levels, certain indicators ... Reagent strip tests can detect concentrations as low as five red blood cells per microliter; however, care must be taken when ...
A useful indicator for the progress of lateral lithiations is the color of the reaction mixture. Benzyllithium compounds range ... Organolithium reagents are sensitive to moisture and thus should be handled under inert atmosphere in anhydrous conditions. ... The use of mixed zinc/copper organometallic reagents generated from benzyl bromides represents a second alternative to lateral ... 7) Sulfonamides require two equivalents of an organolithium reagent for lateral lithiation, but represent a useful class of ...
These reagents are added to a flask, mixed, and the flask is stoppered. The initial color of the solution is blue, but upon ... The reaction also works with other reducing agents besides glucose and other redox indicator dyes besides methylene blue. The ... These, in turn, can be affected by reagent concentration and temperature. In most cases, the overall reaction rate is ... The glucose solution is added to the solution containing indicator (dye indigo carmine) the color changes occur. This reaction ...
During incubation, metabolism produces color changes that are either spontaneous or revealed by the addition of reagents. For ... the pH within the well decreases and that change is indicated by a change in the color of the pH indicator. All positive and ...
If the molecule has not been well characterized, or has only one mAb, it is usually given the provisional indicator "w" (as in ... "CDw186"). For instance, CD2 mAbs are reagents that react with a 50‐kDa transmembrane glycoprotein expressed on T cells. Later, ...
This process is done by using both forms of bilirubin alongside a diazo reagent and a caffeine-benzoate reagent. Conjugated ... Color markers and indicators can be changed. Adding alkaline tartrate can make the purple azobilirubin into a blue azobilirubin ... bilirubin with the azo reagent will react, whilst the unconjugated bilirubin will not react with the azo reagent. "Azobilirubin ...
Sometimes a humidity indicator is included in the desiccant to show, by color changes, the degree of water-saturation of the ... Studies show that molecular sieves are superior as desiccants relative to chemical drying reagents such as sodium-benzophenone ... One commonly used indicator is cobalt chloride (CoCl2). Anhydrous cobalt chloride is blue. When it bonds with two water ... Desiccator Humidity buffering Humidity indicator card Hygroscopy Moisture sorption isotherm Solar air conditioning Oxygen ...
To test the broth for indole production, Kovac's reagent . Kovac's reagent consist of amyl alcohol and para- ... The pH indicator Methyl Red is added to one tube and a red color appears at pH's lower than 4.2, indicating a positive test ( ... After adding both reagents, the tube is shaken vigorously then allowed to sit for 5-10 minutes. A pinkish-red color indicates a ... Kovac's reagent is actually used to determine ability of an organism to separate indole from amino acid tryptophan and it is ...
Berger, Selman A.; McKay, J. Brian (July 1974). "The photometric titration of Fe(III) with EDTA using tiron indicator". ... Alexander, D.; Zuberer, David (1991-09-01). "Use of chrome azurol S reagents to evaluate siderophore production by rhizosphere ...
Oxidation in the liquid phase is caused by a wide range of reagents (HNO3, H2O2, KMnO4).[40][41][42] ... It is an important indicator of activated carbon to maintain its physical integrity and withstand frictional forces. There are ... or processing of carbon with nitrogenating reagents.[45][46][47] ...
Pan American Health Organization, Health situation in the Americas: Basic Indicators 2008 [2] page 9, "resources, access & ... The companies manufacturing reagents and equipment are 70 per cent United States owned, which makes it difficult to purchase ... "Renaissance and decay: A comparison of socioeconomic indicators in pre-Castro and current-day Cuba" (PDF). Archived from the ... Hirschfeld concludes that "Cuba's health indicators are at least in some cases obtained by imposing significant costs on the ...
Defined by ten indicators, a mineral with a higher index scratches those below it. The scale ranges from talc, a phyllosilicate ... When minerals react, the products will sometimes assume the shape of the reagent; the product mineral is termed a pseudomorph ... It has been suggested that biominerals could be important indicators of extraterrestrial life and thus could play an important ... of (or after) the reagent. Illustrated here is a pseudomorph of kaolinite after orthoclase. Here, the pseudomorph preserved the ...
... glassware such as the beaker or reagent bottle. *Analytical devices as HPLC or spectrophotometers ...
American Chemical Society (2006). Reagent chemicals: specifications and procedures : American Chemical Society specifications, ... which functions as a moisture indicator. ...
For example, the classical synthesis of deoxybenzoin calls for 1.1 equivalents of AlCl3 with respect to the limiting reagent, ... a pH indicator) from two equivalents of thymol and phthalic anhydride: A reaction of phthalic anhydride with resorcinol in the ... The viability of the Friedel-Crafts acylation depends on the stability of the acyl chloride reagent. Formyl chloride, for ... or other MXn reagent, as catalyst.[6] The general mechanism for tertiary alkyl halides is shown below.[7] ...
The paper is then rolled and placed in a jar filled with a butanol solution containing bromocresol green indicator dye for ... The enzymatic method allows for a quantitative measurement of both malic and lactic acids, but requires the expense of reagent ...
Instrumentation can control sampling, reagent use, reaction times, signal detection, calculation of results, and data ... quantified the importance of increased pain as an indicator of infection.[28] The review showed that the most useful finding is ... Other important indicators include parental concern, clinical instinct, and temperature greater than 40 °C.[35] ... however the tests are costly to develop and the reagents used in the test often require refrigeration. Some serological methods ...
Both the chromate and dichromate anions are strong oxidizing reagents at low pH:[16] ... "Determination of iron using potassium dichromate: Redox indicators". The Department of Chemistry UWI, Jamaica. Retrieved 8 ... Potassium dichromate is a chemical reagent, used as a titrating agent.[84] ...
Reagent - Separating funnel - Spectrophotometer - Schlenk flask- pH indicator - Litmus papers - Tongs - Soxhlet extractor - ...
Indicators and signs[edit]. The low energy consumption, low maintenance and small size of LEDs has led to uses as status ... This is because the use of UV fluorescence is reagent less, or a process that does not require an added chemical to produce a ... A typical red indicator LED achieves full brightness in under a microsecond.[129] LEDs used in communications devices can have ... A single or a few LED junctions may be packed in one miniature device for use as an indicator or pilot lamp. An LED array may ...
... s outside the normal range may be an indicator of a medical condition. A persistently high level is referred ... This is the most specific method, but the reagent used is toxic ... reducing property of glucose in a reaction with an indicator ...
McFeters, GA; Camper, AK (1983). Enumeration of indicator bacteria exposed to chlorine. Advances in Applied Microbiology. 29. ... Unangst, P. C. "Hypochlorous Acid" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, ...
However, indicator minerals can be misleading; a better approach is geothermobarometry, where the compositions of minerals are ... Under room temperature diamonds do not react with any chemical reagents including strong acids and bases. A diamond's surface ... Then surveyors must go to the area and collect samples, looking for kimberlite fragments or indicator minerals. The latter have ... Impact-type microdiamonds can be used as an indicator of ancient impact craters.[50] Popigai crater in Russia may have the ...
It is equipped with a wind indicator and pressure and temperature sensors. The MET also contains a lidar (light detection and ... Tufts University developed the reagent pellets, barium ISE, and ASV electrodes, and performed the preflight characterization of ... Such wavelength dependence may make it possible to discriminate between ice and dust, and serve as an indicator of the ...
2) with a standard solution of sodium thiosulfate or phenyl arsine oxide, using starch as indicator, until the blue color ... Even so, one report claims that a conventional 13.6% NaOCl reagent solution lost 17% of its strength after being stored for 360 ...
The Marquis reagent turns into a variety of colors when in the presence of different substances. Dille-Koppanyi reagent uses ... are used as indicators of the alcohol consumption. The amounts found in hair are measured in nanograms (one nanogram equals ... Van Urk reagent turns blue-purple when in the presence of LSD. Scott Test's chemical solution shows up as a faint blue for ... Duquenois-Levine reagent is a series of chemical solutions that turn to the color of purple when the vegetation of marijuana is ...
Philo of Byzantium may be the first writer known to describe an invisible ink using a reagent around 280-220 BC, with oak galls ... Phenolphthalein, commonly used as a pH indicator, turns pink in the presence of a base such as ammonia fumes or sodium ... Vinegar contains acetic acid that affects the pH indicator in red cabbage water. Vinegar may also be developed by heat, as ...
Hill, M.O.; Mountford, J.O.; Roy, D.B.; Bunce, R.G.H. (1999). Ellenberg's indicator values for British plants. ECOFACT Volume 2 ... Reagents; and Procedure. ... "Soil Quality Indicators: pH" (PDF). NCRS.USDA.. *^ "Solutions ... Use of an inexpensive pH testing kit, where in a small sample of soil is mixed with indicator solution which changes colour ... Documents like Ellenberg's indicator values for British plants[27] can also be consulted. ...
The shape and area of peaks are indicators of chemical structure too. In the example above-the proton spectrum of ethanol-the ... NMR has largely replaced traditional wet chemistry tests such as color reagents or typical chromatography for identification. A ...
Sequence-tagged sites is a process where PCR is used as an indicator that a particular segment of a genome is present in a ... Addition of reagents, such as formamide, in buffer systems may increase the specificity and yield of PCR.[21] Computer ... It requires no more than a test tube, a few simple reagents, and a source of heat."[76] DNA fingerprinting was first used for ... A basic PCR set-up requires several components and reagents,[10] including a DNA template that contains the DNA target region ...
The Rajendra features a fully digital high speed signal processing system with adaptive moving target indicator, coherent ... The kit uses reagents to detect various chemicals present in explosives.[23] ...
DU used in US munitions has 60% of the radioactivity of natural uranium.[4] Trace transuranics (another indicator of the use of ... and uranium-bearing reagents used in chemistry laboratories (e.g. uranyl acetate, used in analytical chemistry and as a stain ...
Also, TLC plates can be visualized if the compounds or a coloring reagent is fluorescent. Fluorescence is most effective when ... Therefore, individuals exhibiting strong fluorescence may be honest indicators of high individual quality, since they can deal ... Blood and other substances are sometimes detected by fluorescent reagents, like fluorescein. Fibers, and other materials that ...
... is also a useful and reliable chemical indicator of river / groundwater fecal contamination, as chloride is a non- ... all three of which are reactive chlorinating reagents that have been used in a laboratory. ...
... is a very important commodity chemical, and a nation's sulfuric acid production is a good indicator of its ... addition of acid to the water ensures that the acid is the limiting reagent. This reaction is best thought of as the formation ... Sulfuric acid is a very important commodity chemical, and indeed, a nation's sulfuric acid production is a good indicator of ...
... itself can be used, but due to its toxicity and volatility safer brominating reagents are normally used, such as N- ... Other uses of organobromine compounds include high-density drilling fluids, dyes (such as Tyrian purple and the indicator ... It reacts explosively with water and hydrocarbons, but is a less violent fluorinating reagent than chlorine trifluoride. It ...
... an oxidative stress indicator, and activities of the antioxidant enzymes superoxide dismutase, catalase, glutathione S- ... After proper mixing of the sample and the reagent, the mixture is incubated for 10 minutes at ambient temperature and the ...
"Indicator Reagents". Ullmanns Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a14_127.pub2. ... A redox indicator (also called an oxidation-reduction indicator) is an indicator which undergoes a definite color change at a ... Redox Indicator example: The molecule 2,2- Bipyridine is a redox Indicator. In solution,it changes from light blue to red at ... Therefore, sometimes redox indicators are also divided into two general groups: independent or dependent on pH. The most common ...
The General Hydroponics pH Test Indicator can help you maintain an ideal pH level (which is between 5.5 and 6.5). This can be ... The General Hydroponics pH Test Indicator works across a wide pH spectrum (pH 4.0 - 8.5). Kit includes sampling tube, reagent, ... The General Hydroponics pH Test Indicator can help you maintain an ideal pH level (which is between 5.5 and 6.5). This can be ... Reliably manage your pH levels with the General Hydroponics pH Test Indicator ...
Divergence Detection Indicator Using MACD * Pips Profits Trading Indicators * Forex Pro Indicator ...
N-Phenylanthranilic acid, Redox Indicator, for the detection of vanadium, ≥97% (T) -10G Honeywell ...
Thymol blue indicator solution (CIP) 0.04 Thymol blue in H2O MSRP: Now: $9.71 ...
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Stains Indicator Reagents (111) *Stock Clearance (22) *Supply & Services (Logistics) (10) *Swimming Pool & Spa (76) ...
Stains Indicator Reagents (111) *Stock Clearance (22) *Supply & Services (Logistics) (10) *Swimming Pool & Spa (76) ...
... find complete details about Safranine T BS Grade Reagent, Safranine T, Safranine O, BS Grade Reagent - Yonghua Chemical Co., ... Redox indicator. Biological staining. Acid-base indicator. The nitrite is analyzed by spotting. ... Redox indicator. Biological staining. Acid-base indicator. The nitrite is analyzed by spotting. ... Safranine T BS Grade Reagent Cas Number:477-73-6 Formula: C20H19ClN4 Molar Mass:350.85 EC Number:207-518-8 ...
Reagents > Inorganic , Find a product filtering parameters. The prices of goods and actual inventory are always visible. You ...
Indicators and Reagents; Methylene Chloride--chemistry; Solvents--chemistry; Time Factors. ...
Stains Indicator Reagents (111) *Stock Clearance (22) *Supply & Services (Logistics) (10) *Swimming Pool & Spa (76) ... Nitrite Test Reagent TK - 6. April 22, 2018 industri Catalysts and Absorbents, Lab Chemical, Water Treatment Comments Off on ... Sulfamic Acid Descaler Cleaner with colour indicator Inhibitor. April 21, 2018 industri Acids, Automative, Cleaning Chemicals, ... Water Treatment Comments Off on Sulfamic Acid Descaler Cleaner with colour indicator Inhibitor ...
The reagent handling module 14 moves the reagent probe 12 to and from the reaction vessel 10 to introduce reagent. A reagent ... provides an indicator value which may be compared to empirically determined values to test these related sample factors. ... Reagent is introduced into the reaction vessel 10 by means of a reagent probe 12 directed by a reagent handling module 14. ... The reagent fluid system 16 is connected to fluid conduits which flow measured quantities of reagent from a reagent container ...
I used the entire bottle of HCl and could not get the indicator reagent to change color. I cannot recommend wasting money on ... the reagents must be wrong. I will start out with the fact that I have a Ph.D. in biochemistry and have published over 100 peer ... When i add the SO2 indicator to the hydrogen peroxide, I get a bright pink. When I add the 40mL of distilled water it get pale ... Hi Patti, I am not a chemist, but it would be my guess that your reagents are spent. The hydrogen peroxide does not last long. ...
Titan Yellow is used as a stain and fluorescent indicator in microscopy in complex laboratory procedures. The product is useful ... as a reagent for detecting magnesium. This is also combined with magnesium hydroxide for developing an orange-colored lake for ...
Indicator and reagent papers for impregnation (raw papers). *. Filter papers for the production of beverages ...
Indicator and reagent papers for impregnation (raw papers). *. Filter papers for the production of beverages ...
Indicators. *Lubricants and Penetrating Oil. *Organics. *pH and Electrochemistry. *Reagents. *Salts and Inorganics ...
Was used as pH indicator measured with a reagent test strip for this reason it can electrostatically... Mist, or gas carbonic ... Indicator, acid-base pH indicator, acid-base pH indicator manage the pH of solution based on the on... Ph is usually measured ... upon testing I found that the pH indicator actually decreasing the … Color Changes and pH Ranges for Indicators Indicator Color ... It is even used as a color indicator, acid-base pH indicator and as a biological stain. Is a Masters Degree in Chemical ...
STANDARDS & REAGENTS * Analytical Volumetric Solutions & Indicators * Analytical Volumetric Solutions * Concentrated ...
Indicators are used to determine whether a solution is acidic or alkaline. Ans. Set the apparatus as shown in Fig. In it we ... But all metals do not react with these reagents. Non metals do not reacts with acids as such. As discussed previously, metals ... Acids, Bases and Salts 19 Which of these - vanilla, onion and clove, can be used as olfactory indicators on the basis of your ... With active metals to form salt and water Indicators are used to determine whether a solution is acidic alkaline. In it how do ...
2.2.5 Preparation of test reagents The reagents necessary involved redistilled pyridine, PA reagent, phenolphthalein indicator ... 5.2 Reag ent water. All references to water in this method refer to reagent water, a s defined in Chapter One. 5.3 Zinc acetate ... A caustic reagent which is typically used to neutralize acids and prepare sodium salts of reagents. Sodium hydroxide is a ... Rocky Mountain Reagents - Home - Rocky Mountain Reagents. Pardon our dust! Our website is being redesigned and is changing ...
Nessler s reagent was dropped into the test medium was dropped into the agar the. 1 ) one drop of Nessler s reagent was ... Test performed was a urea test, which produced a negative result for urease of 6, the indicator yellow. Is ray was passed into ... After aerobic incuba-tion at 37C for 6 hr, one drop of Nesslers reagent was dropped into the test medium. Shiny bluish yellow ... At a pH of 6, the indicator turns yellow, a negative test. aeruginosa. ASM journals are the most prominent publications in the ...
Reflux Impinger - fits Reaction Flask; has air and reagent intake, full-length impinger, and hose barb ... has permanent 50 mL indicator ...
... great economic indicators were achieved in the 300tpd gold mine heap leaching project in Mongolia. However, because of the high ... Using sodium cyanide as gold leaching reagents at the early stage, ... Using sodium cyanide as gold leaching reagents at the early stage, great economic indicators were achieved in the 300tpd gold ... Process Indicator. Subsequently, the project leader purchased some CNFREE gold environmental leaching agent from YANTAI ITAO ...
Due to bright color of molybdate, the compound is employed in paints, inks, and as an indicator & reagent in different ... It is also used in pharmaceutical industry as an analytical reagent. On the basis of prominent applications, global sodium ... In terms of application, the market can be divided into analytical reagent, fertilizers & micronutrient, catalyst, metals & ... Ammonium molybdate is manufactured in different grades such as reagent & technical grade, laboratory grade, food & ...
Indicators and detection reagents * Acids * Solvents * Microscopy * Special Chemicals * Chemical sets & class sets ...
Indicators and detection reagents * Acids * Solvents * Microscopy * Special Chemicals * Chemical sets & class sets ...
Indicators and detection reagents * Acids * Solvents * Microscopy * Special Chemicals * Chemical sets & class sets ...
  • MilliporeSigma provides various selected high-quality fluorescence indicators for a wide range of applications, e.g. for complexometric or precipitation titration, dye tracing in liquids, as stains and dyes for visualizing cells, cell components, chromosomes and bacteria in microscopy, or for detecting antigen-antibody reactions. (emdmillipore.com)
  • Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications. (carlroth.com)
  • NucBlue® Fixed-Cell and NucBlue® Live Reagents are ReadyProbes® formulations of the classic DAPI and Hoechst® 33342 dyes, respectively. (thermofisher.com)
  • For this purpose, fluorescent calcium-indicator dyes, which should be introduced into cells by microinjection or by bulk-loading using their acetoxymethyl ester forms ( 4 , 5 ), or genetically encoded calcium indicators (GECIs) have been used ( 6 , 7 ). (pnas.org)
  • Calcium signaling has been studied in astrocyte cell bodies using bulk loading of calcium indicator dyes, and astrocytes are known to display intracellular calcium transients. (jneurosci.org)
  • We assessed bulk loading using Sholl analysis ( Sholl, 1953 ) of astrocytes loaded with common calcium indicator dyes and compared these data with Sholl analysis of astrocyte morphology. (jneurosci.org)
  • In the CA1 region of the hippocampus from rats, we found that bulk loading of calcium indicator dyes only reports on calcium signals within the soma and in the most proximal processes, leaving ∼90% of the area of an astrocyte and its extensive processes unsampled. (jneurosci.org)
  • Early studies showed that under appropriate conditions, astrocytes in brain slices could be loaded with organic calcium indicator dyes ( Porter and McCarthy, 1995 ). (jneurosci.org)
  • NucBlue® Live Reagent is an optimized and validated Hoechst® 33342 solution that stains nuclei of live and fixed cells and tissues with bright blue fluorescence. (thermofisher.com)
  • With simplification in mind, we have developed a variety of ReadyProbes® fluorescent labeling reagents that make sample staining and image analysis much easier (Table 1) . (thermofisher.com)
  • Kelly-Cirino CD, Curry PS, Marola JL, Helstrom NK, Salfinger M. Novel multi-day sputum transport reagent works with routine tuberculosis tests and eliminates need for cold chain: Preliminary study of compatibility with the Xpert® MTB/RIF assay. (ucdenver.edu)
  • Evaluation of FLIPR Calcium 3 Assay Kit-A New No-Wash Fluorescence Calcium Indicator Reagent," J Biomol Screen, 2003, 8(5):571-577. (freepatentsonline.com)
  • Inclusion of an oxidizing agent from the group specified above stabilizes the reagent, thereby preventing a high blank reaction because a high blank introduces error into the assay of an analyte. (google.ca)
  • The reagent may be utilized to perform the assay of an analyte from a fluid sample. (google.ca)
  • The assay may be conducted in a solution medium by adding the fluid sample to the liquid reagent, and spectrophotometrically measuring absorbance of the color indicating the presence of formazan which was produced by reduction of the tetrazolium salt under assay conditions. (google.ca)
  • Alternatively, the assay may be conducted in a film medium by adding the fluid sample to the reagent incorporated in the film, and spectrophotometrically measuring reflectance or transmittance of the color indicating formazan. (google.ca)
  • This invention presents novel assay methods employing a capture reagent, involving a first binding member typically conjugated to a polymeric anion substance, and a solid phase material containing a reaction site comprising a polymeric cation substance having a nitrogen content of at least about two. (google.ca)
  • 7. The method according to Claim 1 , further comprising the addition of an ancillary specific binding member, wherein said ancillary specific binding member is capable of binding the analyte and is capable of binding a member selected from the group consisting of said indicator reagent or said capture reagent in an indirect assay. (google.ca)
  • Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. (ucdenver.edu)
  • Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. (ucdenver.edu)
  • Indicators and reagents substances used for the detection , identification , analysis , etc. (biologyonline.com)
  • Biological substances, international standards and reference reagents : 1990. (who.int)
  • In the process of oxidizing the organic substances found in the water sample, potassium dichromate is reduced (since in all redox reactions, one reagent is oxidized and the other is reduced), forming Cr 3+ . (wikipedia.org)
  • ATTORNEYS INVENTORS ADOLF WENZ ALFRED STEIN DIETER SCHMITT WW INDICATOR STRIP BACKGROUND OF THE INVENTION In analytical chemistry procedures, indicating devices permitting a rapid determination of the identity of substances dissolved in a liquid have become of increasing importance. (google.com)
  • ASTM Industrial Testing Reagents are used in the testing and evaluation of the physical and chemical properties of substances used or produced primarily in industrial applications for a variety of consumer goods including engine coolants, rubbers and plastics, and petroleum. (spectrumchemical.com)
  • ACS reagent redox indicator puriss. (sigmaaldrich.com)
  • A redox indicator (also called an oxidation-reduction indicator) is an indicator which undergoes a definite color change at a specific electrode potential. (wikipedia.org)
  • The most common redox indicator are organic compounds. (wikipedia.org)
  • Redox Indicator example: The molecule 2,2'- Bipyridine is a redox Indicator. (wikipedia.org)
  • Methods for detection the indicators of metabolism in the oral liquid (a rewiew). (bioportfolio.com)
  • Genetically encoded calcium indicator (GECI) polypeptides and the nucleic acid molecules encoding such polypeptides are provided. (freepatentsonline.com)
  • 1. An isolated nucleic acid molecule encoding a genetically encoded calcium indicator (GECI) polypeptide, wherein the GECI polypeptide comprises an amino acid sequence having at least 99% sequence identity to the sequence as set forth in SEQ ID NO: 6. (freepatentsonline.com)
  • In one aspect, a nucleic acid molecule encoding a genetically encoded calcium indicator (GECI) polypeptide is provided, wherein the GECI polypeptide comprises an amino acid sequence having at least 95% sequence identity to a sequence shown in SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:8 or SEQ ID NO:10. (freepatentsonline.com)
  • In this work, i utilized nucleic acid staining reagents as chromophores to develop a signaling strategy that avoids synthetic modification of aptamers. (missouristate.edu)
  • We demonstrate a simple, low cost and disposable microfluidic fluorescence activated cell sorting system (μFACS) for directed evolution of fluorescent proteins (FP) and FP-based calcium ion (Ca 2+ ) indicators. (rsc.org)
  • For example, in precipitation titrations where a well-defined change in hydrogen-ion concentration, oxidation potential, or metal-ion concentration occurs at the equivalence point, indicators whose fluorescent properties in solution are influenced by one of these properties can be used for endpoint determination. (emdmillipore.com)
  • pH Indicator Solution is a colorimetric spot test used to determine the pH. (qktest.com)
  • OTO Reagent Indicator Solution Replacement for testing swimming pool water. (spasaunadirect.com)
  • This 1/2 oz bottle is the replacement indicator solution for OTO (#1) for the test kit, item #22270. (spasaunadirect.com)
  • Benedicts reagent is an indicator for the presence of what in a solution? (socratic.org)
  • Bromocresol Purple is a pH indicator that is typically prepared as a 0.04% solution. (spectrumchemical.com)
  • Bromocresol purple indicator solution. (cdc.gov)
  • Bromocresol Green, 0.1 Percent (w/v) Aqueous Indicator Solution is used as a pH indicator and as a tracking dye for DNA agarose gel electrophoresis. (spectrumchemical.com)
  • The reagent may be provided in solution form by adding water, or may be included in a film by adding a film-forming agent. (google.ca)
  • NucBlue® Fixed-Cell Reagent provides you with a high-purity DAPI solution for blue-fluorescent staining of nuclei in fixed cells and tissues. (thermofisher.com)
  • In solution,it changes from light blue to red at an electrode potential of 0.97 V. pH indicator Ram W. Sabnis, Erwin Ross, Jutta Köthe, Renate Naumann, Wolfgang Fischer, Wilhelm-Dietrich Mayer, Gerhard Wieland, Ernest J. Newman, Charles M. Wilson (2009). (wikipedia.org)
  • A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually. (wikipedia.org)
  • Normally, the indicator causes the color of the solution to change depending on the pH. (wikipedia.org)
  • The transition range may shift slightly depending on the concentration of the indicator in the solution and on the temperature at which it is used. (wikipedia.org)
  • Imaging neural activity in worms, flies and mice with improved GCaMP calcium indicators," Nat. (freepatentsonline.com)
  • Optimization of a GCaMP Calcium Indicator for Neural Activity Imaging," J. Neurosci. (freepatentsonline.com)
  • Specifications for reagents mentioned in the International pharmacopoeia. (who.int)
  • Includes liquid reagent, instructions, and accessories. (commercialalgae.com)
  • These rods exhibit a serious disadvantage, because relatively viscous liquid media, such as serum, for ex ample, are very slowly absorbed by the indicator paper. (google.com)
  • The reagents contained in the indicator papers, insofar as they are soluble in the liquid to be tested, are also subjected to this chromatographic effect, as well as the components dissolved in the liquid to be tested. (google.com)
  • Includes a 10ml fluid CO2 Indicator Liquid. (microaquaticshop.com.au)
  • All reagents are high purity & ready to be used for your colorimetric tests. (qktest.com)
  • In particular, indicators from MilliporeSigma enable you to precisely determine the endpoint for a wide range of titration types. (emdmillipore.com)
  • Typically, the oxidation-reduction indicator ferroin is added during this titration step as well. (wikipedia.org)
  • During the titration the color of the indicator changes from a green hue to a bright blue hue to a reddish brown upon reaching the endpoint. (wikipedia.org)
  • The analytical methods recommended in the Standard Method for the Examination of Water and Waste Water [ 15 ] and the Official and Standardized Method of Analysis [ 16 ] are: (1) argentometric titration with silver nitrate using potassium chromate indicator, (2) titration with mercuric nitrate using s-diphenylcarbazone indicator, and (3) potentiometric titration using a glass and a silver-silver chloride electrode. (hindawi.com)
  • Specifically, FP-based Ca 2+ indicators are genetically encoded and can therefore be delivered to cells transiently in the minimally invasive form of the corresponding gene or constitutively expressed in transgenic animals. (rsc.org)
  • Genetically encoded calcium indicators (GECIs) allow measurement of activity in large populations of neurons and in small neuronal compartments, over times of milliseconds to months. (elifesciences.org)
  • Genetically-encoded calcium indicators (GECIs) enable non-invasive measurement of neuronal activity in vivo. (elifesciences.org)
  • To visualize how motor circuits in the spinal cord are activated during this behavior, we developed GCaMP-HS (GCaMP- h yper s ensitive), an improved version of the genetically encoded calcium indicator GCaMP, and created transgenic zebrafish carrying the GCaMP-HS gene downstream of the Gal4-recognition sequence, UAS (upstream activation sequence). (pnas.org)
  • Unlike expression vectors, BacMam reagents enable titratable and reproducible expression and offer high cotransduction efficiency, enabling multiple BacMam reagents to be used in the same cell. (thermofisher.com)
  • Spectrum specializes in providing the top tci organic ph indicators if you do not see the product, grade, or form of the ingredient you require, just contact our chemical specialist at 800-772-8786. (spectrumchemical.com)
  • 8. Toluene, reagent grade. (cdc.gov)
  • 9. Dichloromethane, reagent grade. (cdc.gov)
  • 10. Hexane, reagent grade. (cdc.gov)
  • 14. Tetrahydrofuran, reagent grade. (cdc.gov)
  • Diphenylamine may be used in the preparation of diphenylamine reagent, which is employed for the quantitative estimation of DNA from various biological sources by colorimetric method. (sigmaaldrich.com)
  • The Federal Research and Clinical Center of Physical-Chemical Medicine (SRI PCM) of the Federal Medical Biological Agency (FMBA) has presented new chips and reagents for the Indicator-BIO device. (technospark.ru)
  • Earlier Indicator-BIO was presented to Veronika Skvortsova, Head of the Federal Medical and Biological Agency. (technospark.ru)
  • Abcam's reputation as an innovator in the field of biological reagents and dedicated global commercialisation infrastructure, coupled with their transparent and collegiate partnership approach, made them the standout choice as our development and commercialisation partner for the PolyNaut ® Technology platform. (b3cnewswire.com)
  • As a global life sciences company, Abcam identifies, develops, and distributes high-quality biological reagents and tools that are crucial to research, drug discovery and diagnostics. (b3cnewswire.com)
  • Our portfolio includes acid-alkali (pH) indicators, complex or metal indicators, fluorescence indicators, redox indicators as well as special indicators that we tailor to the exact requirements of your applications. (emdmillipore.com)
  • A combination of phosphate (a mediator) and phenolphthalein (an indicator) was found to be the most successful. (hindawi.com)
  • In some indicators, such as phenolphthalein, one of the species is colorless, whereas in other indicators, such as methyl red, both species confer a color. (wikipedia.org)
  • Spectrum Chemical offers a wide selection of tci organic ph indicators which can be used in biology and analytical chemistry to determine the extent of a chemical reaction. (spectrumchemical.com)
  • As most naturally occurring organic compounds are weak protolytes, carboxylic acids and amines, pH indicators find many applications in biology and analytical chemistry. (wikipedia.org)
  • pH indicators are frequently employed in titrations in analytical chemistry and biology to determine the extent of a chemical reaction. (wikipedia.org)
  • We have a range of almost 4000 Laboratory Reagents & developed more than 400 Dehydrated Culture Media. (blulux.com)
  • Tabulated below are several common laboratory pH indicators. (wikipedia.org)
  • In one embodiment a test sample suspected of containing the analyte of interest may be contacted with the capture reagent to form a charged capture reagent/analyte complex. (google.ca)
  • Taylor Test Reagent R-0007-C Thiosulfate N/10. (shoptoit.ca)
  • The Taylor Test Reagent R-0007-C Thiosulfate N/10 is an ideal refill for your existing Taylor. (shoptoit.ca)
  • Taylor reagent R-0004-C tests the pH levels in your pool or hot tub water when used with a Taylor. (shoptoit.ca)
  • These commercial indicators (e.g., universal indicator and Hydrion papers) are used when only rough knowledge of pH is necessary. (wikipedia.org)
  • This method is applicable to isocyanate vapors (2,4-TDI vapor, 2,6-TDI vapor, and hexamethylene diisocyanate (HDI) vapor) [2,3], but not aerosols because of inefficient collection of aerosols and incomplete reaction of aerosol isocyanates with reagent. (cdc.gov)
  • Let us remind that the Indicator-BIO analyzer is capable of detecting up to four pathogens at the same time by means of polymerase chain reaction (PCR), which is a high-precision method of molecular and genetic diagnostics. (technospark.ru)
  • Inherent properties of p-nitrobenzene diazonium tetrafluoroborate appeared to be responsible for inaccuracies in that method, which could not be corrected by varying reagent concentration or the reaction conditions. (curehunter.com)
  • For the quantitative analysis of metal cations, the use of complexometric indicators is preferred, whereas the third compound class, the redox indicators, are used in titrations involving a redox reaction as the basis of the analysis. (wikipedia.org)
  • The general reaction scheme of a pH indicator can be formulated as: HInd + H 2O ⇌ H 3O+ + Ind− Here, HInd stands for the acid form and Ind− for the conjugate base of the indicator. (wikipedia.org)
  • Calcium imaging using synthetic calcium indicators has been used to measure neuronal spiking and synaptic input across populations of neurons in vitro and in vivo. (freepatentsonline.com)
  • This activity can be detected using fluorescent protein indicators, or "probes", which light up when neurons are active. (elifesciences.org)
  • would therefore like to make even more sensitive protein indicators that will allow larger networks of neurons deeper in the brain to be imaged. (elifesciences.org)
  • Test rods have been used which contain one or more test paper indicator strips sealed between plastic films. (google.com)
  • The determination is additionally impaired by an air bubble, which normally forms between the indicator paper and the top film when the test rod is immersed into the medium to be examined. (google.com)
  • The new reagents were promptly developed by the Russian scientists engaged by the FMBA, and it is thanks to these reagents that the time of obtaining a test result has been halved. (technospark.ru)
  • Note 3-Oils, such as many cutting oils, rustproofing oils, and similar compounded oils, or excessively dark-colored oils, that cannot be analyzed for acid number by this test method due to obscurity of the color-indicator end point, can be analyzed by Test Method D664 . (astm.org)
  • The acid numbers obtained by this color-indicator test method need not be numerically the same as those obtained by Test Method D664 , the base numbers obtained by this color indicator test method need not be numerically the same as those obtained by Test Method D4739 , but they are generally of the same order of magnitude. (astm.org)
  • The spike test revealed that all PT reagents positively correlated with edoxaban. (springer.com)
  • and d) detecting said indicator reagent associated with said solid phase to determine the presence or amount of the analyte in the test sample. (google.ca)
  • The Total Coliform / E. coli Indicator Bacteria Test Kit (Code 4-3616-UV) includes five tubes, each with a nutrient tablet. (lamotte.com)
  • In and of themselves, pH indicators are frequently weak acids or weak bases. (wikipedia.org)
  • Note: Ferroin indicator is bright red from commercially prepared sources, but when added to a digested sample containing potassium dichromate it exhibits a green hue. (wikipedia.org)
  • In the present study, we examined whether prothrombin time (PT) tests can serve as a clinically useful indicator of anti-factor Xa activity. (springer.com)
  • Our wide range of different products in various packaging sizes enables you to obtain all the indicators you need for your application from a single source. (emdmillipore.com)
  • Blood grouping reagents : preparation and application methods / by T. C. F. Roy, G. S. Nicholson, F. A. Ala. (who.int)
  • However, current red GECIs are inferior to the state-of-the-art GFP-based GCaMP6 indicators for detecting and quantifying neural activity. (elifesciences.org)