Wintertime urban air pollution in many global megacities is characterised by episodic rapid increase in particulate matter concentrations associated with elevated relative humidity - so-called haze episodes, which have become characteristic of cities such as Beijing. Atmospheric chemistry within haze combines gas- and condensed-phase chemical processes, leading to the growth in secondary species such as sulphate aerosols. Here, we integrate observations of reactive gas phase species (HONO, OH, NOx) and time-resolved aerosol composition, to explore observational constraints on the mechanisms responsible for sulphate growth during the onset of haze events. We show that HONO abundance is dominated by established fast gas-phase photochemistry, but the consideration of the additional formation potentially associated with condensed-phase oxidation of S species by aqueous NO2 leading to NO2− production and hence HONO release, improves agreement between observed and calculated gas-phase HONO levels. ...
Alicke, B., Platt, U., and Stutz, J.: Impact of nitrous acid photolysis on the total hydroxyl radical budget during the Limitation of Oxidant Production/Pianura Padana Produzione di Ozono study in Milan, J. Geophys. Res.-Atmos., 107, LOP 9-1-LOP 9-17, https://doi.org/10.1029/2000JD000075, 2002. Ammann, M., Kalberer, M., Jost, D. T., Tobler, L., Rössler, E., Piguet, D., Gäggeler, H. W., and Baltensperger, U.: Heterogeneous production of nitrous acid on soot in polluted air masses, Nature, 395, 157-160, https://doi.org/10.1038/25965, 1998. Arens, F., Gutzwiller, L., Baltensperger, U., Gäggeler, H. W., and Ammann, M.: Heterogeneous Reaction of NO2 Diesel Soot Particles, Environ. Sci. Technol., 35, 2191-2199, https://doi.org/10.1021/es000207s, 2001. Aubin, D. G. and Abbatt, J. P. D.: Interaction of NO2 with hydrocarbon soot: Focus on HONO yield, surface modification, and mechanism, J. Phys. Chem. A, 111, 6263-6273, https://doi.org/10.1021/jp068884h, 2007. Bohnenstengel, S. I., Belcher, S. E., ...
What is Nitrous acid? Nitrous acid is a weak and monobasic acid known only in solution, in the gas phase and in the form of nitrite salts.
Japan Geoscience Union Meeting 2018,GC/MS and IC Analysis of Nicotine Reaction with HONO<br />~As the first step of examining the effect of surfactant on carcinogen formation~
A phosphooligosaccharide has been proposed as a second messenger of insulin. It is believed to be structurally related to the carbohydrate moiety of phosphatidylinositol glycan anchors of many cell surface proteins. Herein we demonstrate that [32]phosphate in freshly isolated adipocytes and [3H]galactose in cultured hepatoma cells (H4IIE) labeled the same set of three different glycolipids. With all three, the radiolabel was made water soluble by phosphatidylinositol(glycan)-specific phospholipase C or D catalyzed hydrolysis. We isolated the three phospholipase C-released substances. One of them was susceptible to nitrous acid deamination, indicative of a hexosamine with a free amino group. This phosphooligosaccharide structure had an apparent molecular mass between tetra- and pentaglucose by gel filtration. By anion-exchange chromatography it was separated into two differently charged and interconvertible species. Adipocytes stimulated with insulin accumulated the nitrous acid sensitive ...
Oku ai a e fakatotolo o e tonu o e ngaahi ola o e C60 i he ngaahi selo mo e sino o e tangata i hono tuunga kimua. Mamao, fokotuu ki he kau fai savea oku uesia e he C60 a e lahi taha pe ko e mitochondria i he ngaahi selo. Oku iloa a e mitochondria ko ha akau tootoo o e malohi, tanaki a e ivi lahi i he fotunga o e adenosine a e triphosphate (ATP) o fakafou i he founga o e maolunga. Oku fakahehema a e fakahoko o e fanga kii selo mo e mitochondria mo fakatupulaki o e tau, ke kii mamalie hifo pea mo ngaue lelei sii ange. Mo e metabolism tootoo holo, tauataina radicals mo toxins tanaki i he ngaahi selo. Ko eni langa hake a e naunau oxidized oku ngalingali e taha o e ngaahi tefitoi tupuanga o e toulekeleka. Oku tuku a e ngaahi ako fakatotolo ke fakakaukau oku malava ke hu ki he mitochondria manifi mo e popula mo e tauataina radicals, ko hono tokonii enau excretion ko ha telefoni tootoo i hono potu lala a e C60 molecules. Tupulaki e lavamea ...
E lava ke fakahaai e he ngaahi ola o e ausia lolotonga e ako feasibility ha mau ivi maolunga aupito fekauaki mo e kii tohi nae fai. Ka ko e taumua o e sivii o e feasibility oku meimei fakatautautefito pe ia ke fakahaai a e ngaahi nunua o ha ki he naunau. Kapau ko e fai ia i he feasibility a e sivi lelei nae hoko a e ngaahi nunua, toe kuo pau ke ke fai ha feinga ke fakahoko lelei ange a e fika o e ivi e tohi. Oku uhinga eni ke vakaii a e fokotuutuu lelei o e ha a e ngaahi fakangatangata ke ausia a e maolunga taha oku omi o ngaue aki a e malava ke fai a e founga ngaue fakaekonomika taha uhinga lelei pea mo lelei a e ivi ko siisii ange. Ke mau a e fokotuutuu o e tokolahi lelei o e fakangatangata - hono mau o e ngaahi lelei fekauaki mo e ngaahi aonga siisii o e ivi - ki hono fakafekauaki o e ngaahi fakangatangata mahuinga taha amplitude, teke, mafana o e ea mo e vai Oku mau a e taanga ke ke fakatotoloi. Ko e sitepu hono ua ko ...
4. A resist underlayer composition comprising an organic solvent; and a polymer including a repeating unit represented by at least one of Chemical Formula 1 and Chemical Formula 2, ##STR00029## wherein, in Chemical Formulae 1 and 2, R1, R3, R4, R5, and R7 are each independently hydrogen, a hydroxy group, a halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted allyl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted amino group, a substituted or unsubstituted siloxane group, or a substituted or unsubstituted silane group, R2 and R6 are each independently hydrogen, a halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted allyl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted alkoxy group, a ...
Three types (T1, T2, T3) of proetoglycan (PG) filaments, as demonstrated by cuprolinic blue (CB) under critical electrolyte concentration method in the epithelial-stromal interface of the guinea pig lateral prostate, were characterized cytochemically by using a number of glycosaminoglycan(GAG)-degrading enzymes and nitrous acid. The results showed that T1 filaments located in basement membranes of the epithelium, endothelium, and smooth muscle cells, were removed by nitrous acid, heparitinase, and pronase but resistant to chondroitinase (Ch)-ABC and Ch-AC, heparinase, neuraminidase, and Streptomyces (S) hyaluronidase. The T1 filaments, therefore, contain heparan sulfate. The T2 filaments closely linked to collagen fibrils were removed by Ch-ABC, Ch-ABC plus S-hyaluronidase, and pronase but were resistant to nitrous acid, heparitinase, heparinase, neuraminidase, and S-hyaluronidase. These show that T2 filaments are rich in dermatan sulfate. The T3 filaments in the interstitial spaces and on the ...
0105]Examples of the substituent T include alkyl groups (preferably, 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms, e.g., including methyl, ethyl, i-propyl, t-butyl, n-octyl, n-decyl, n-hexadecyl, cyclopropyl, cyclopentyl, cyclohexyl, and the like), alkenyl groups (preferably, 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms, particularly preferably 2 to 8 carbon atoms, e.g., including vinyl, allyl, 2-butenyl, 3-pentenyl, and the like), alkynyl groups (preferably, 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms, particularly preferably 2 to 8 carbon atoms, e.g., including propargyl, 3-pentynyl, and the like), aryl groups (preferably, 6 to 30 carbon atoms, more preferably 6 to 20 carbon atoms, particularly preferably 6 to 12 carbon atoms, e.g., including phenyl, p-methylphenyl, naphthyl, and the like), substituted or unsubstituted amino groups (preferably, 0 to 20 carbon atoms, more preferably 0 to 10 carbon atoms, ...
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Nitrous acid, 1,1-dimethylethyl ester EINECS 208-757-0 Nitrous acid, t-butyl ester tert-Butylnitrite 4-01-00-01622 4-01-00-01622 (Beilstein Handbook Refer.... ...
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Original description:. While digging into performance issues in the Eclipse Hono project I noticed a high consumption of CPU time when encoding AMQP messages using proton-j.. I made a small reproducer and threw the same profiler at it, here are the results:. As you can see in the attach screenshot (the first is the initial run with the current code) most of the time is consumed in EncoderImpl#writeRaw(String). This due to the fact that is call put for every byte it want to encode.. The following screenshots are from a patched version which uses a small thread local buffer to locally encode the raw data and then flush it to the buffer in bigger chunks.. Screenshot 3 and 4 show the improve performance, but also show that the memory consumption stays low.. ...
If you would like to present, enter your name and a short abstract and title. Henning Treu (Deutsche Telekom AG): Eclipse SmartHome - Das Framework für Heimautomatisierungslösungen. Karsten Thoms (Itemis AG): A RESTful microservice for querying p2 repository contents. (Bredex GmbH): Automating tests in Jubula Boris Aydrian (Zühlke Engineering): Marc Pellmann (Bosch): Eclipse Hono ...
Nitrous [ NITROUS, a. Pertaining to niter; partaking of the qualities of niter, or resembling it. Nitrous acid is one of the compounds formed of nitrogen and oxygen, in which the oxygen is in a lower proportion than that in which the same elements form nitric ... ]
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The concentration of nitrogen oxides (NOx) plays a central role in controlling air quality. On a global scale, the primary sink of NOx is oxidation to form HNO3. Gasphase HNO3 photolyses slowly with a lifetime in the troposphere of 10 days or more. However, several recent studies examining HONO chemistry have proposed that particle-phase HNO3 undergoes photolysis 10−300 times more rapidly than gas-phase HNO3. We present here constraints on the rate of particle-phase HNO3 photolysis based on observations of NOx and HNO3 collected over the Yellow Sea during the KORUS-AQ study in summer 2016. The fastest proposed photolysis rates are inconsistent with the observed NOx to HNO3 ratios. Negligible to moderate enhancements of the HNO3 photolysis rate in particles, 1−30 times faster than in the gas phase, are most consistent with the observations. Small or moderate enhancement of particle-phase HNO3 photolysis would not significantly affect the HNO3 budget but could help explain observations of HONO ...
Two antimutagenic DNA polymerases of bacteriophage T4 markedly reduce transition mutagenesis by a variety of chemical mutagens. Spontaneous mutation and mutagenesis by 2-aminopurine, 5-bromodeoxyuridine, and thymine deprivation are strongly suppressed. Mutagenesis at G:C sites by ethyl methanesulfonate, and at A:T sites by nitrous acid, is moderately suppressed. Mutagenesis at G:C sites by hydroxylamine and by nitrous acid is not suppressed. These results support the notion that the indispensable DNA polymerase of bacteriophage T4 plays a crucial role in the selection of the correct base during DNA replication. The data also reveal that mutagenic specificities of chemical agents depend as much upon the characteristics of the enzymatic apparatus of DNA replication as they do upon the chemistry of primary mutational lesions.. ...
Nitric oxide, as well as several other oxides of nitrogen, were assayed for their antibacterial action. It is shown that nitric oxide has virtually no effect on bacteria, whereas both NaNO3 and NaNO2 appear to have either neutral or stimulatory effects. It is suggested that the formation of nitrous acid is mainly responsible for the quantitative as well as the qualitative changes that occur in the bacterial flora of cured meat. A pH-dependent nitrite cycle is presented to account for the production of nitrous acid in cured meat systems. ...
Valtrex está indicado para el tratamiento de herpes zoster agudo localizado en adultos inmunocompetentes? In an embodiment, tautologically go wherein said substituent is unsubstituted amino. Thus, in another embodiment, a kit of the invention includes 1) a first nucleic acid encoding a transcriptional regulator fusion protein of the invention (or a eukaryotic cell into which the nucleic acid has been stably introduced) and 2) a second nucleic acid comprising a nucleotide sequence comprising in a 5′ to 3′ direction: a first cloning site for introduction of a first nucleotide sequence of interest operatively linked to at least one tet operator sequence operatively linked to a second cloning site for introduction of a second nucleotide sequence of interest, wherein transcription of the first and second nucleotide sequences proceeds in opposite directions from the at least one tet operator sequence! Both type 1 and type 2 herpes simplex viruses reside in a latent state in spinal anterior horn ...
Ko e mahaki huhunu (varicella) ko e vailasi ia oku ikai ke fuu fakatuutāmaki, ka e lava o iku ke fakatuutāmaki ange o hangē ko e niumonia, faingataaia ai a e kofuua, mafu, hokotanga hui pea pe ko e ngaahi neave foki.. Ko e tifitēlia (diphtheria) ko ha mahaki pipihi o e mongá. Faingataa e mānavá pe folo. Ko e tifitēlia e lava ke uesia ai a e ngaahi neave, uoua pea mo e mafú.. Ko e fulū hemofilusi kalasi b (Hib) oku ne fakatupu a hono ulufia o e kofui utó pea mo fufula a e foi monga o ala mapuni ai a e halanga mānava. E ala tupu ai mo ha niumonia pea mo ha ulufia o e hokotanga hui pea mo e kili foki.. Ko e hepataitisi B oku ne maumaui e ia a e ate. Te ke ongoi tokakovi mo tāvaivaia pea lanu engeenga a ho kili.. Ko e HPV pe ko e human papillomavirus oku ne fakatupu e ia a e kanisā o e taungafanau mo e ngaahi kanisā kehe. Ko e vailasi eni oku meimei fetaulaki ia mo e kakai kotoa pe o Nuusila he taimí niihi. E lava foki ke tupu mei ai a e ...
The generation of viral mutants in vitro was demonstrated by treatment of the isolated RNA of Tobacco Mosaic Virus by nitrous acid. This agent causes deaminations converting cytosine into uracil, and adenine into hypoxanthine. Our assay for mutagenesis was the production of local lesions on a tobacco variety on which the untreated strain produces systemic infections only. A variety of different mutants are generated in this way. Quantitative analysis of the kinetics of mutagenesis leads to the conclusion that alteration of a single out of the 6000 nucleotides of the viral RNA is sufficient for causing a mutation ...
Other articles where Nitrosamine is discussed: amine: Substitution: …aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl…
1. Isonitroso-1:3-diphenylthio-hydantoin has been obtained for the first time by the action of nitrous acid on 1:3-diphenylthio-hydantoin. 2. Isonitroso-diphenylthio-hydantoin has a bright yellow colour in the solid state or in solution in organic solvents, but on treatment with alkalies or organic bases, intense crimson coloured salts are formed the transition of colour from yellow to crimson being sufficiently strong and sharp for the compound to act as an excellent indicator. 3. The change of colour of the above compound from yellow to crimson has been shown from theoretical considerations to be due to a fundamental change in the constitution of the molecules from an oximinoketonic to a nitroso-enolic form. 4. The above change is quite in accordance with a Theory of colour on the basis of molecular strain, advanced by Dutt. ...
1.Gertler A, Hofmann T The involvement of the amino-terminal amino acid in the activity of pancreatic proteases. I. The effects of nitrous acid on elastase, J Biol Chem, 1967 ...
The bodys response to moist heat is dilation of the blood vessels, causing an increase in the blood flow to the area under treatment. This helps flush away waste products and bring in fresh blood to the treatment area. Moist heat soothes back pain caused by muscle spasms and temporarily relieves the pain of arthritic and muscle skeletal conditions ...
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OPUS (Open Publications of UTS Scholars) is the UTS institutional repository. It showcases the research of UTS staff and postgraduate students to a global audience. For you, as a researcher, OPUS increases the visibility and accessibility of your research by making it openly available regardless of where you choose to publish.. Items in OPUS are enhanced with high quality metadata and seeded to search engines such as Google Scholar as well as being linked to your UTS research profile, increasing discoverability and opportunities for citation of your work and collaboration. In addition, works in OPUS are preserved for long-term access and discovery.. The UTS Open Access Policy requires UTS research outputs to be openly available via OPUS. Depositing your work in OPUS also assists you in complying with ARC, NHMRC and other funder Open Access policies. Providing Open Access to your research outputs through OPUS not only ensures you comply with these important policies, but increases opportunities ...
PROCESS FOR MAKING GEMINAL BISPHOSPHONATES Abstract of the Invention The present invention relates to a novel process for making geminal bisphosphonates. The process provides for bisphosphorylation using phosphorus trihalide, phosphorous acid as a reactant/solvent, and a base as an acid acceptor/solvent. The present invention is directed to a process for making geminal bisphosphonates of the general formula (I), wherein Q is oxygen, -NR4-, sulfur, selenium, or a single bond; m+n is an integer from 0 to about 5, Z is a ring selected from the group consisting of pyridine, pyridazine, pyrimidine, and pyrazine; R1 is hydrogen, substituted or unsubstituted amino, amido, hydroxy, alkoxy, halogen, carboxylate, substituted or unsubstituted alkyl (saturated or unsaturated) having from 1 to about 6 carbon atoms, substituted or unsubstituted aryl, or substituted or unsubstituted benzyl; each R2 is independently, hydrogen, or substituted or unsubstituted alkyl (saturated or unsaturated) having from 1 to ...
Two conformers, cis-cis and trans-perp HOONO, are identified in the 2vOH region by vibrational overtone initiated photodissociation spectroscopy, and the isomerization barrier from the less stable trans-perp to cis-cis HOONO is determined experimentally, statistically, and ab initio to be ~ 40 kJ/mol. This low barrier indicates that only cis-cis HOONO is atmospherically important. The complex vibrational spectroscopy of cis-cis HOONO is assigned with the aid of a simple two-dimensional OH-stretch/torsion coupling model of the planar, partially hydrogen-bound molecule. Combined with nonuniform quantum yield, this model explains the major features in the cis-cis HOONO spectrum. Its application to the fundamental region suggests an upward adjustment of the atmospherically important HOONO/HONO2 product branching ratio in the OH + NO2 association reaction. The rotational spectrum and dipole moment of cis-cis HOONO and DOONO are measured in the submillimeter region to characterize the molecular ...
Professor James Donaldson, who has been studying urban grime for more than a decade, recently presented new research detailing how urban grime releases smog-forming nitrogen oxide compounds when exposed to sunlight. This paper, co-authored with PhD student Alyson Baergen, has overturned the previously held notion that such compounds remain trapped in the grime. The research involved field studies in Toronto and Leipzig, Germany, and helps to explain why nitrous oxide (HONO) compounds have been recently reported in urban environments at higher levels than can be explained by current models. It has also shown, notes Donaldson, that we do not understand urban air pollution as well as we had thought. His research team is continuing to explore the chemistry occurring with sunlight and grime and are planning a similar study in Shanghai with colleagues at Fudan University, and are also undertaking a long-term study in Toronto. The story has captured the attention of international media and an ...
word: (written, printed) vorto; (spoken) parolo; (notification) avizo, inform-ajo; (second person of the Trinity) Verbo; (of command) imper-vorto; (milit.) komando(-parolo); (promise) promiso; (dispute) disputo; by w. of mouth: voce, parole; word for word: vort-ope; in other w.s: altra-vorte; to form w.s: vort-ifar; to say a w. to: dicar (un) parolo ad (ulu); he does not say a w.: il dicas nulo o il tacas; in a w.: un-vorte, rezume; passw.: pas-vorto; to have w.s: disputar; inter-reprochar; take my w.: kredez me! w. of hono(u)r: honor-promiso; to break his w.: faliar sua promiso (ad ulu); to give his w.: asertar promiso per sua honoro; to w.: expresar; enuncar; skribar; redaktar; stil-izar; w. book: vort-aro; w.iness: prolix-eso; parol-em-eso; vort-abundo; w.ing: vort-if-ado; vort-, parol-selekto; vort-expreso; stilo; texto; redakt-(ad)o, -eso; w.less: sen-vorta; sen-parola; (silent) tac-anta; w.y: prolixa; parol-ema, -oza; vort-oza ...
The chemical and immunological characteristics of the type-specific substance (M) of Streptococcus hæmolyticus are considered.. 1. A summary of the evidence for the protein nature of this substance follows:. (a) It is precipiated by the usual protein precipitants such as, dilute alcohol, dilute acetic acid, and picric acid.. (b) It contains 14 per cent protein nitrogen after considerable purification.. (c) It is progressively destroyed by removal of the NH2 group by treatment with nitrous acid.. (d) It is completely and readily digested by trypsin and by pepsin.. 2. Purified extracts react in relatively high dilution with homologous antibacterial sera, but do not precipitate most heterologous antibacterial sera or sera potent in non-type-specific antibodies for the group reactive nucleoprotein P or for the species-specific probable carbohydrate C. Attempts to immunize rabbits with the type-specific protein have been unsuccessful, with simple salt solution extracts of streptococci as well as ...
Step (a) of the above method of the invention is preferably performed using doped primers. For instance, the random mutagenesis may be performed by use of a suitable physical or chemical mutagenizing agent, by use of a suitable oligonucleotide, or by subjecting the DNA sequence to PCR generated mutagenesis. Furthermore, the random mutagenesis may be performed by use of any combination of these mutagenizing agents. The mutagenizing agent may, e.g., be one, which induces transitions, transversions, inversions, scrambling, deletions, and/or insertions. Examples of a physical or chemical mutagenizing agent suitable for the present purpose include ultraviolet (UV) irradiation, hydroxylamine, N-methyl-N-nitro-N-nitrosoguanidine (MNNG), O-methyl hydroxylamine, nitrous acid, ethyl methane sulphonate (EMS), sodium bisulphite, formic acid, and nucleotide analogues. When such agents are used, the mutagenesis is typically performed by incubating the DNA sequence encoding the parent enzyme to be mutagenized ...
The 9000C Ambient Ion Monitor (AIM) is a scientifically-advanced, multi-pollutant monitoring method which allows for continuous measurements of particle nitrate, sulfate, nitrite, chloride and phosphate. At the same time, the AIM provides time-resolved gas measurements of hydrogen chloride, sulfur-dioxide, nitric acid and nitrous acid.. ...
Synonym: Nitrous acid sodium salt Formula: NaNO2 F.W.: 69.00 CAS No.: 7632-00-0 Characteristics: White to slightly yellow crystalline solid Storage Code: Yellow reactive
ANORGANISCHE PEROXIDE + ANORGANISCHE PEROXOVERBINDUNGEN; SALPETRIGE SÄURE UND NITRITE (ANORGANISCHE CHEMIE); HÄMOGLOBIN (PROTEINE); MYOGLOBIN (PROTEINE, PEPTIDE); INORGANIC PEROXIDES + INORGANIC PEROXO-COMPOUNDS; NITROUS ACID AND NITRITES (INORGANIC CHEMISTRY); HEMOGLOBIN (PROTEINS); MYOGLOBIN (PROTEINS AND PEPTIDES ...
Define Nitranilic. Nitranilic synonyms, Nitranilic pronunciation, Nitranilic translation, English dictionary definition of Nitranilic. a. 1. Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone....
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Cold compresses or cold packs are more likely to provide relief to gout pain sufferers than heat, says WebMD. Resting the joint and increasing water intake are also recommended home care treatments,...