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You searched for: Subject term nitric oxide Remove constraint Subject term: nitric oxide Subject term heat production Remove constraint Subject term: heat production
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1. Superoxide anion and singlet oxygen dominated faster photocatalytic elimination of nitric oxide over defective bismuth molybdates heterojunctions

Author:
Xianglong Yang; Xing Ding; Shengyao Wang; Jin Mao; Ling Cheng; Peiwu Li; Hao Chen
Source:
Journal of colloid and interface science 2022 v.618 pp. 248-258
ISSN:
0021-9797
Subject:
adsorption; bismuth; guidelines; heat production; infrared spectroscopy; molybdates; nitric oxide; photocatalysis; singlet oxygen; superoxide anion
Abstract:
... Establishing an ideal photocatalytic system with efficient reactive oxygen species (ROS) generation has been regarded as the linchpin for realizing efficient nitric oxide (NO) removal and unveiling the ROS-mediated mechanism. In this work, a novel oxygen-deficient 0D/1D Bi₃.₆₄Mo₀.₃₆O₆.₅₅/Bi₂MoO₆ heterojunctions (BMO-12-H) were successfully synthesized under the enlightenment of clarified crystal g ...
DOI:
10.1016/j.jcis.2022.03.014

2. Nitric oxide release activated near-Infrared photothermal agent for synergistic tumor treatment

Author:
Yunjian Xu; Shiqi Wang; Zhenjiang Chen; Rui Hu; Yihua Zhao; Kexin Wang; Junle Qu; Liwei Liu
Source:
Biomaterials 2021 v.276 pp. 121017
ISSN:
0142-9612
Subject:
absorption; biocompatible materials; cytotoxicity; fluorescence; heat production; neoplasms; nitric oxide; nitrosamines; phototherapy; photothermotherapy; survival rate; water solubility; wavelengths
Abstract:
... Activatable phototherapeutic agents (PTA) in one system with synergistic gas therapy (GT) and photothermal therapy (PTT) hold great promise for highly efficient tumor treatments. In this study, an activatable multifunctional platform with photothermal conversion “turn on” features via nitric oxide (NO) release for synergistic GT and PTT was rationally designed using an aryl N-nitrosamine (NO-donat ...
DOI:
10.1016/j.biomaterials.2021.121017

3. Polysaccharide (laminaran and fucoidan), fucoxanthin and lipids as functional components from brown algae (Padina tetrastromatica) modulates adipogenesis and thermogenesis in diet-induced obesity in C57BL6 mice

Author:
Priya Prakash Sharma; V. Baskaran
Source:
Algal research 2021 v.54 pp. 102187
ISSN:
2211-9264
Subject:
Padina; adipogenesis; adipose tissue; algae; antioxidant enzymes; bioactive compounds; catalase; cholesterol; computer simulation; dietary supplements; fucoidan; glutathione peroxidase; glutathione transferase; heat production; insulin; insulin-like growth factor I receptor; lifestyle; liver; metabolic diseases; metabolites; mice; nitric oxide; non-specific serine/threonine protein kinase; obesity; oxidative stress; peroxidase; protein synthesis; research; signal transduction; superoxide dismutase; triacylglycerols
Abstract:
... Currently, mounting demand for safe natural bioactives has strengthened marine algae as an important source of nutraceuticals to tackle lifestyle diseases. Indian brown algae (Padina tetrastromatica) comprises several nutraceutical constituents with proposed anti-obese properties. In the present study, we have isolated, characterized fucoxanthin, polysaccharides (laminaran and fucoidan) and total ...
DOI:
10.1016/j.algal.2021.102187

4. The myokine irisin: localization and effects in swine late medium and large antral ovarian follicle

Author:
G. Basini; S. Bussolati; M. Iannarelli; L. Ragionieri; S. Grolli; R. Ramoni; A. Dodi; F. Gazza; F. Grasselli
Source:
Domestic animal endocrinology 2021 v.74 pp. 106576
ISSN:
0739-7240
Subject:
adipose tissue; antioxidant activity; biochemical pathways; cardiovascular system; cell growth; cell proliferation; energy expenditure; estradiol; exercise; heat production; nitric oxide; peptides; progesterone; skeletal muscle; steroidogenesis; superoxide anion; swine; white adipocytes
Abstract:
... Irisin is mainly synthesized by skeletal muscle tissue, where it is believed to be responsible for the benefits of exercise on metabolism and cardiovascular system. In adipose tissue, its best-known effect is the browning of white adipocytes, resulting in the increase of thermogenesis and energy expenditure. As it has been largely documented that metabolic dysfunctions can frequently be associated ...
DOI:
10.1016/j.domaniend.2020.106576

5. Atmospheric oxidation of HFE-7300 [n-C2F5CF(OCH3)CF(CF3)2] initiated by •OH/Cl oxidants and subsequent degradation of its product radical: a DFT approach

Author:
Subrata Paul; Bhupesh Kumar Mishra; Satyajit Dey Baruah; Ramesh Chandra Deka; Nand Kishor Gour
Source:
Environmental science and pollution research international 2020 v.27 no.1 pp. 907-920
ISSN:
0944-1344
Subject:
atmospheric chemistry; global warming potential; heat production; hydroxyl radicals; nitric oxide; oxidants; oxidation; potential energy; temperature
Abstract:
... To understand the atmospheric chemistry of hydrofluoroethers, we have studied the oxidation of a highly fluorinated compound n-C₂F₅CF(OCH₃)CF(CF₃)₂ (HFE-7300) by OH/Cl oxidants. Here, we have employed M06-2X functional along with a 6-31 + G(d,p) basis set to obtain the optimized structures, various forms of energies, and different modes of frequencies for all species. We have characterized energie ...
DOI:
10.1007/s11356-019-06975-1

6. Reactive molecular dynamics simulation of the high-temperature pyrolysis of 2,2′,2′′,4,4′,4′′,6,6′,6′′-nonanitro-1,1′:3′,1′′-terphenyl (NONA)

Author:
Liang Song; Feng-Qi Zhao; Si-Yu Xu; Xue-Hai Ju
Source:
RSC advances 2020 v.10 no.9 pp. 5507-5515
ISSN:
2046-2069
Subject:
activation energy; carbon dioxide; diffusivity; endothermy; heat production; heat tolerance; homolytic cleavage; isomerization; molecular dynamics; nitric oxide; nitrogen; nitrogen dioxide; pyrolysis; simulation models; temperature
Abstract:
... 2,2′,2′′,4,4′,4′′,6,6′,6′′-Nonanitro-1,1′:3′,1′′-terphenyl (NONA) is currently recognized as an excellent heat-resistant explosive. To improve the atomistic understanding of the thermal decomposition paths of NONA, we performed a series of reactive force field (ReaxFF) molecular dynamics simulations under extreme conditions of temperature and pressure. The results show that two distinct initial de ...
DOI:
10.1039/c9ra10261b

7. Effect of hydrogen addition on combustion and heat release characteristics of ammonia flame

Author:
Jun Li; Hongyu Huang; Lisheng Deng; Zhaohong He; Yugo Osaka; Noriyuki Kobayashi
Source:
Energy 2019 v.175 pp. 604-617
ISSN:
0360-5442
Subject:
ammonia; combustion; emissions; endothermy; fuels; heat production; hydrogen; nitric oxide; nitrous oxide; oxygen
Abstract:
... As a key parameter of fuel, the heat release characteristics of ammonia (NH3) flames under hydrogen (H2)-enriched conditions constitute the emphasis of this research. The effect of H2 addition on heat release characteristics of premixed laminar NH3 flames are numerically investigated by considering the detailed chemical mechanism. The NH3, O2, H2O, NO, and N2O mole fraction distributions based on ...
DOI:
10.1016/j.energy.2019.03.075

8. Functional Relationship between Leptin and Nitric Oxide in Metabolism

Author:
Sara Becerril; Amaia Rodríguez; Victoria Catalán; Beatriz Ramírez; Xabier Unamuno; Piero Portincasa; Javier Gómez-Ambrosi; Gema Frühbeck
Source:
Nutrients 2019 v.11 no.9 pp. -
ISSN:
2072-6643
Subject:
angiogenesis; arginine; bioactive properties; blood pressure; body weight; bone formation; endothelial nitric oxide synthase; energy balance; free radicals; genes; heat production; hematopoiesis; immune response; inducible nitric oxide synthase; leptin; leptin receptors; metabolism; neuronal nitric oxide synthase; nitric oxide; reproduction; satiety; tissues
Abstract:
... Leptin, the product of the ob gene, was originally described as a satiety factor, playing a crucial role in the control of body weight. Nevertheless, the wide distribution of leptin receptors in peripheral tissues supports that leptin exerts pleiotropic biological effects, consisting of the modulation of numerous processes including thermogenesis, reproduction, angiogenesis, hematopoiesis, osteoge ...
DOI:
10.3390/nu11092129
PubMed:
31500090
PubMed Central:
PMC6769456

9. Mechanism and kinetics of the oxidation of dimethyl carbonate by hydroxyl radical in the atmosphere

Author:
Mannangatti Gnanaprakasam; Lakshmanan Sandhiya; Kittusamy Senthilkumar
Source:
Environmental science and pollution research international 2019 v.26 no.4 pp. 3357-3367
ISSN:
0944-1344
Subject:
anhydrides; carbon; carbonates; chemical bonding; energy; enthalpy; heat production; hydrogen; hydroxyl radicals; nitric oxide; nitrogen dioxide; oxidants; oxidation; oxygen; quantum mechanics; temperature
Abstract:
... The mechanism and kinetics for the reaction of dimethyl carbonate (DMC) with OH radical have been studied by using quantum chemical methods. Four reaction pathways were identified for the initial reaction. In the first two pathways, hydrogen atom abstraction is taking place and alkyl radical intermediate is formed with the energy barrier of 6.4 and 7.9 kcal/mol. In the third pathway, OH addition r ...
DOI:
10.1007/s11356-018-3831-z

10. NO reduction over an Al-embedded MoS₂ monolayer: a first-principles study

Author:
Mehdi D. Esrafili; Safa Heydari
Source:
RSC advances 2019 v.9 no.67 pp. 38973-38981
ISSN:
2046-2069
Subject:
activation energy; air; ambient temperature; carbon dioxide; carbon monoxide; catalysts; dissociation; energy; heat production; moieties; nitric oxide; oxygen; toxicity
Abstract:
... Converting toxic air pollutants such as nitric oxide (NO) and carbon monoxide (CO) into less harmful gases remains a critical challenge for many industrial technologies. Here, by performing first-principles calculations, we introduce a cheap, stable and novel catalyst for the conversion of NO and CO molecules into N₂O and CO₂ using Al-doped MoS₂ (Al–MoS₂). According to our results, dissociation of ...
DOI:
10.1039/c9ra05759e

11. Density Functional Theory Study of the Role of an Carbon–Oxygen Single Bond Group in the NO–Char Reaction

Author:
Tong Zhao; Wenli Song; Chuigang Fan; Songgeng Li; Peter Glarborg; Xiaoqian Yao
Source:
Energy & fuels 2018 v.32 no.7 pp. 7734-7744
ISSN:
1520-5029
Subject:
active sites; carbon dioxide; carbon monoxide; chemical bonding; dehydrogenation; density functional theory; energy; fuels; heat production; nitric oxide
Abstract:
... The mechanism of the reaction between char and nitric oxide (NO) on zigzag and armchair edge structures was studied based on density functional theory (DFT). Four possible pathways were presented to illustrate the chemical processes. The results show that the activation step and the release of carbon monoxide (CO) and carbon dioxide (CO₂) are the controlling steps in the NO–char reaction. The exot ...
DOI:
10.1021/acs.energyfuels.8b01124

12. Dynamics of organic matter decomposition during vermicomposting of banana stem waste using Eisenia fetida

Author:
Chandra Khatua; Somoshree Sengupta; Vamsi Krishna Balla; Biswanath Kundu; Ashis Chakraborti; Sudipta Tripathi
Source:
Waste management 2018 v.79 pp. 287-295
ISSN:
0956-053X
Subject:
Eisenia fetida; Fourier transform infrared spectroscopy; bananas; calcium; carbon dioxide; cattle manure; cell respiration; chemical analysis; crop production; earthworms; germination; heat production; humification; iron; magnesium; moieties; nitrates; nitric oxide; nutrients; organic matter; peas; phosphorus; potassium; rice; seeds; vermicomposting; vermicomposts; vibration
Abstract:
... A better understanding of how dynamics of physical and chemical changes occur during vermicomposting process would be helpful for determining the stability and maturity of vermicompost. For improving the knowledge about this issue several instrumental techniques were used in the present study to analyse the physical and chemical changes as a function of vermicomposting time of banana stem waste (B ...
DOI:
10.1016/j.wasman.2018.07.043

13. Investigation on the thermal decomposition of hydroxyl terminated polyether based polyurethanes with inert and energetic plasticizers by DSC-TG-MS-FTIR

Author:
Yapeng Ou; Yalun Sun; Xueyong Guo; Qingjie Jiao
Source:
Journal of analytical and applied pyrolysis 2018 v.132 pp. 94-101
ISSN:
0165-2370
Subject:
Lewis acids; carbon dioxide; carboxylic acids; cleavage (chemistry); decarboxylation; depolymerization; differential scanning calorimetry; endothermy; engineering; free radicals; glycerol; heat production; infrared spectroscopy; melting; nitric oxide; plasticizers; polyurethanes; pyrolysis; temperature
Abstract:
... Thermal decomposition behavior of hydroxyl terminated polyether (HTPE) based polyurethanes (PUs) containing glycerol triacetate (TA), bis(2,2-dinitropropyl)-acetal/formal (BDNPA/F, also known as A3) and N-butyl-N-(2-nitroxyethyl)nitramine (NENA) respectively as plasticizers were investigated by the combination of differential scanning calorimetry-thermogravimetry-mass spectrometry-Fourier transfor ...
DOI:
10.1016/j.jaap.2018.03.011

14. Mannoside and 1,2-mannobioside β-cyclodextrin-scaffolded NO-photodonors for targeting antibiotic resistant bacteria

Author:
Giovanna Cutrone; Gábor Benkovics; Milo Malanga; Juan Manuel Casas-Solvas; Éva Fenyvesi; Salvatore Sortino; Luis García-Fuentes; Antonio Vargas-Berenguel
Source:
Carbohydrate polymers 2018 v.199 pp. 649-660
ISSN:
0144-8617
Subject:
aniline; antibiotic resistance; bacteria; beta-cyclodextrin; calorimetry; concanavalin A; endothermy; heat production; mannose; moieties; nanocarriers; nitric oxide; nitroanilines; nuclear magnetic resonance spectroscopy; titration
Abstract:
... Two β-cyclodextrin derivatives randomly appended on the primary face with both the nitric oxide (NO) photodonor 4-nitro-3-(trifluoromethyl)aniline and a mannose or α(1→2)mannobioside residue are reported to construct targeted NO photoreleasing nanocarriers. 2D ROESY and PGSE NMR suggested supramolecular homodimerization in water by inclusion of the nitroaniline group into the facing macrocycle cav ...
DOI:
10.1016/j.carbpol.2018.07.018

15. Adsorbate Pairing on Oxide Surfaces: Influence on Reactivity and Dependence on Oxide, Adsorbate Pair, and Density Functional

Author:
Van den Bossche Maxime; Grönbeck Henrik
Source:
The Journal of Physical Chemistry C 2017 v.121 no.15 pp. 8390-8398
ISSN:
1932-7455
Subject:
adsorption; ceric oxide; electrostatic interactions; energy; heat production; nitric oxide; nitrogen dioxide; oxygen; titanium dioxide
Abstract:
... Open-shell molecules on metal oxide surfaces frequently display cooperative adsorption mechanisms, where pairs of adsorbates are significantly more stable than the isolated species. In this work, density functional theory is used to investigate the cooperative adsorption of OHH and NO₂NO on rocksalt BaO(100), rutile TiO₂(110), fluorite CeO₂(111), and tetragonal PdO(101) surfaces. The OH and NO₂ ...
DOI:
10.1021/acs.jpcc.6b12789

16. Emissions from a domestic two-stage wood-fired hydronic heater: Effects of non-homogeneous fuel decomposition

Author:
Joseph P. Richter; Joshua M. Weisberger; Joseph C. Mollendorf; Paul E. DesJardin
Source:
Renewable energy 2017 v.112 pp. 187-196
ISSN:
0960-1481
Subject:
air; carbon dioxide; carbon monoxide; combustion; emissions; flue gas; fuels; heat production; hydrogen; industry; nitric oxide; oxygen; phytomass; renewable energy sources; spectroscopy
Abstract:
... Accurate knowledge of the combustion gas composition is necessary for practical combustion systems where emissions reduction is a major concern. Industries use a variety of sensor technologies, many of which can be expensive. In industries that use plant biomass for heat production, a constant fuel composition is often assumed for estimation of unmeasured exhaust gas species and for the calculatio ...
DOI:
10.1016/j.renene.2017.05.038

17. A Cr-phthalocyanine monolayer as a potential catalyst for NO reduction investigated by DFT calculations

Author:
Jittima Meeprasert; Anchalee Junkaew; Nawee Kungwan; Bavornpon Jansang; Supawadee Namuangruk
Source:
RSC advances 2016 v.6 no.25 pp. 20500-20506
ISSN:
2046-2069
Subject:
catalysts; chemical bonding; density functional theory; dissociation; energy; heat production; nitric oxide; nitrogen; nitrous oxide; reaction mechanisms; temperature
Abstract:
... The reaction mechanism of nitric oxide (NO) reduction to nitrous oxide (N₂O) and N₂ catalyzed by a Cr-phthalocyanine sheet (CrPc) was investigated using periodic density functional theory (DFT). The results show that direct NO dissociation on the catalyst is inhibited by a large energy barrier owing to the difficulty of direct cleavage of the strong NO bond. The dimer mechanism in which two NO mol ...
DOI:
10.1039/c5ra25631c

18. Evaluation of thermal hazards and thermo-kinetic parameters of N,N′-dinitro-4,4′-azo-Bis(1,2,4-triazolone) (DNZTO)

Author:
Jiaping Zhu; Shaohua Jin; Yuehai Yu; Chunyuan Zhang; Lilijie Li; Shusen Chen; Qinghai Shu
Source:
Thermochimica acta 2016 v.623 pp. 58-64
ISSN:
0040-6031
Subject:
calorimetry; carbon dioxide; carbon monoxide; differential thermal analysis; heat production; hydrogen cyanide; nitric oxide; nitrogen dioxide; nitrous oxide; pyrolysis; temperature; thermal properties; thermogravimetry
Abstract:
... Thermogravimetric–differential thermal analysis (TG–DTA) and accelerating rate calorimetry (ARC) were performed to understand thermal characteristics and kinetics of energetic N,N′-dinitro-4,4′-azo-Bis(1,2,4-triazolone) (DNZTO). A single sharp and narrow exothermic decomposition occurred at 143.3, 150.3, 156.4, 157.4, 159.8 and 160.3°C at different heating rates (0.5, 1, 2, 3, 4, and 5°Cmin⁻¹) sug ...
DOI:
10.1016/j.tca.2015.11.018

19. Crystal structure, thermal decomposition, mechanical sensitivity of Na[CL-14·2H₂O] and its catalytic effect on the thermal decomposition of ammonium nitrate

Author:
Jian Cheng; Yan Dong; Hui Ma; Lixia Li; Zuliang Liu; Fengqi Zhao; Siyu Xu
Source:
RSC advances 2015 v.5 no.79 pp. 64358-64367
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Gibbs free energy; X-ray diffraction; activation energy; ammonium nitrate; carbon dioxide; catalysts; catalytic activity; crystal structure; endothermy; enthalpy; entropy; equations; friction; heat production; mass spectrometry; nitric oxide; sodium carbonate; temperature; thermal degradation; thermogravimetry
Abstract:
... A one-dimensional energetic complex (Na[CL-14·2H₂O]) constructed from sodium and 5,7-diamino-4,6-dinitrobenzofuroxan (CL-14) was synthesized, and its crystal structure was analyzed by X-ray diffraction. The crystal belongs to a monoclinic system with space group P2₁/c. The complex possesses a one-dimensional coordination framework based on the [ONaN]ₙ chain, which might result in its low sensitivi ...
DOI:
10.1039/c5ra13156a

20. Removal of element mercury by medicine residue derived biochars in presence of various gas compositions

Author:
Guoliang Li; Boxiong Shen; Yongwang Li; Bin Zhao; Fumei Wang; Chuan He; Yinyin Wang; Min Zhang
Source:
Journal of hazardous materials 2015 v.298 pp. 162-169
ISSN:
0304-3894
Subject:
active sites; adsorbents; adsorption; ammonium chloride; biochar; energy; flue gas; heat production; medicine; mercuric chloride; mercury; nitric oxide; oxygen; quartz; sulfur dioxide; surface area; wastes
Abstract:
... Pyrolyzed biochars from an industrial medicinal residue waste were modified by microwave activation and NH4Cl impregnation. Mercury adsorption of different modified biochars was investigated in a quartz fixed-bed reactor. The results indicated that both physisorption and chemisorption of Hg0 occurred on the surface of M6WN5 which was modified both microwave and 5wt.% NH4Cl loading, and exothermic ...
DOI:
10.1016/j.jhazmat.2015.05.031

21. Thermal stability and mechanism of decomposition of emulsion explosives in the presence of pyrite

Author:
Zhi-Xiang Xu; Qian Wang; Xiao-Qi Fu
Source:
Journal of hazardous materials 2015 v.300 pp. 702-710
ISSN:
0304-3894
Subject:
ambient temperature; ammonia; ammonium nitrate; emulsions; explosives; gases; heat production; mining; nitric oxide; nitrogen dioxide; nitrous oxide; pyrite; shale; sulfur dioxide; thermal degradation; thermal stability
Abstract:
... The reaction of emulsion explosives (ammonium nitrate) with pyrite was studied using techniques of TG-DTG-DTA. TG–DSC–MS was also used to analyze samples thermal decomposition process. When a mixture of pyrite and emulsion explosives was heated at a constant heating rate of 10K/min from room temperature to 350°C, exothermic reactions occurred at about 200°C. The essence of reaction between emulsio ...
DOI:
10.1016/j.jhazmat.2015.07.069

22. Thermodynamic and kinetic evaluation of the reaction between NO (nitric oxide) and char(N) (char bound nitrogen) in coal combustion

Author:
Hai Zhang; Jiaxun Liu; Jun Shen; Xiumin Jiang
Source:
Energy 2015 v.82 pp. 312-321
ISSN:
0360-5442
Subject:
combustion; credit; density functional theory; desorption; electrons; energy; heat production; models; nitric oxide; nitrogen; pyridines
Abstract:
... Using pyridine nitrogen as representative of nitrogen-containing char model, detailed theoretical calculations based on DFT (density functional theory) and conventional TST (transition state theory) are carried out to investigate the thermodynamics and kinetics of the heterogeneous interaction between NO (nitric oxide) and char(N) (char bound nitrogen) during coal combustion. Focus is directed on ...
DOI:
10.1016/j.energy.2015.01.040

23. Application of density functional theory to the nitric oxide heterogeneous reduction mechanism in the presence of hydroxyl and carbonyl groups

Author:
Hai Zhang; Xiumin Jiang; Jiaxun Liu; Jun Shen
Source:
Energy conversion and management 2014 v.83 pp. 167-176
ISSN:
0196-8904
Subject:
activation energy; active sites; carbon dioxide; density functional theory; energy; heat production; moieties; nitric oxide; nitrogen; oxygen
Abstract:
... Comprehensive theoretical calculations are carried out to investigate the nitric oxide (NO) heterogeneous reduction mechanism in the presence of hydroxyl (OH) and carbonyl (>CO) groups. Energetics (activation energy and thermochemistry data) and kinetics (thermal rate constant) for the proposed pathways are provided by density functional theory (DFT) and conventional transition state theory (TST), ...
DOI:
10.1016/j.enconman.2014.03.067

24. Degradation of methyl salicylate through Cl initiated atmospheric oxidation – a theoretical study

Author:
A. Mano Priya; L. Senthilkumar
Source:
RSC advances 2014 v.4 no.45 pp. 23464-23475
ISSN:
2046-2069
Subject:
benzene; chemical structure; density functional theory; hardness; heat production; longevity; methyl salicylate; nitric oxide; oxidation; reaction mechanisms; temperature; topology
Abstract:
... In the present study, a possible reaction mechanism for the degradation through Cl initiated atmospheric oxidation of methyl salicylate (MeSA) was studied using density functional theory at B3LYP and M06-2X levels of theory with 6-311++G(d,p) basis set. The degradation occurred through an abstraction process at the meta position of MeSA along the entire reaction path. The barrier height values ind ...
DOI:
10.1039/c4ra02398f

25. Effect of Thermal Degradation on the CO, C3H6, and NO Oxidation Performance of Pt/Al2O3 with a Zoned Distribution of Pt

Author:
Abedi Ali; Epling William
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.14 pp. 5692-5700
ISSN:
1520-5045
Subject:
air; atmospheric pressure; catalysts; engineering; heat production; nitric oxide; ovens; oxidation; oxygen; temperature; thermal degradation
Abstract:
... Temperature-programmed oxidation (TPO) experiments were used to evaluate the performance of uniformly (standard) and nonuniformly (zoned) distributed Pt/Al₂O₃ catalysts after homogeneous and heterogeneous thermal degradation. Both catalysts were homogeneously aged in an oven by exposing the entire catalyst to 750 °C in air for 4 h at atmospheric pressure. In heterogeneous aging, only the back of t ...
DOI:
10.1021/ie403317w

26. Polar Bears Exhibit Genome-Wide Signatures of Bioenergetic Adaptation to Life in the Arctic Environment

Author:
Andreanna J. Welch; Oscar C. Bedoya-Reina; Lorenzo Carretero-Paulet; Webb Miller; Karyn D. Rode; Charlotte Lindqvist
Source:
Genome biology and evolution 2014 v.6 no.2 pp. 433-450
Subject:
Ursus arctos; Ursus maritimus; adenosine triphosphate; amino acid substitution; cell respiration; cold; cytochrome-c oxidase; diet; energy; fasting; genes; glucose; heat production; hibernation; mitochondria; nitric oxide; overeating; proteins; temperature; Arctic region
Abstract:
... Polar bears (Ursus maritimus) face extremely cold temperatures and periods of fasting, which might result in more severe energetic challenges than those experienced by their sister species, the brown bear (U. arctos). We have examined the mitochondrial and nuclear genomes of polar and brown bears to investigate whether polar bears demonstrate lineage-specific signals of molecular adaptation in gen ...
DOI:
10.1093/gbe/evu025
PubMed:
24504087
PubMed Central:
PMC3942037

27. Synthesis and thermal behaviors of 1,8-dihydroxy-4,5-dinitroanthraquinone barium salt

Author:
Ying-Lei Wang; Feng-Qi Zhao; Yue-Ping Ji; Qi-Long Yan; Jian-Hua Yi; Si-Yu Xu; Yang Luo; Xian-Ming Lu
Source:
Journal of analytical and applied pyrolysis 2014 v.105 pp. 295-300
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; Gibbs free energy; activation energy; barium; carbon dioxide; carbon monoxide; catalysts; combustion; differential scanning calorimetry; enthalpy; entropy; heat production; mass spectrometry; nitric oxide; pyrolysis; soot; temperature; thermal properties; thermogravimetry
Abstract:
... A novel energetic green combustion catalyst, 1,8-dihydroxy-4,5-dinitroanthraquinone barium salt (DHDNEBa), was firstly synthesized by the process of metathesis reaction with a yield of 95.7%, and its structure and thermal behavior were characterized by IR, elemental analysis, thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). The thermal decomposition kinetics and mechani ...
DOI:
10.1016/j.jaap.2013.11.016

28. Formation of Nitrosamines and Alkyldiazohydroxides in the Gas Phase: The CH3NH + NO Reaction Revisited

Author:
da Silva Gabriel
Source:
Environmental Science & Technology 2013 v.47 no.14 pp. 7766-7772
ISSN:
1520-5851
Subject:
combustion; energy; equations; gases; heat production; isomerization; isomers; nitric oxide; nitrogen; nitrosamines; oxygen; primary amines; superoxide anion; troposphere
Abstract:
... Aminyl free radicals of the form RN•H are formed in the photochemical oxidation of primary amines, and their reaction with •NO is an important tropospheric sink. Reaction of the parent methylamidogen radical (CH₃N•H) with •NO in the gas phase has been studied using quantum chemical techniques and RRKM theory/master equation based kinetic modeling. Calculations with the G3X-K composite theoretical ...
DOI:
10.1021/es401591n

29. Photooxidation of Ammonia on TiO2 as a Source of NO and NO2 under Atmospheric Conditions

Author:
Kebede Mulu A.; Varner Mychel E.; Scharko Nicole K.; Gerber R. Benny; Raff Jonathan D.
Source:
Journal of the American Chemical Society 2013 v.135 no.23 pp. 8606-8615
ISSN:
1520-5126
Subject:
ammonia; ammonium compounds; chemiluminescence; heat production; hydroxyl radicals; isomerization; nitric acid; nitric oxide; nitrogen; nitrogen dioxide; oxidants; oxygen; ozone; photooxidation; pollution control; relative humidity; spectroscopy; superoxide anion; titanium dioxide; urban areas
Abstract:
... Ammonia is the most abundant reduced nitrogen species in the atmosphere and an important precursor in the industrial-scale production of nitric acid. A coated-wall flow tube coupled to a chemiluminescence NOₓ analyzer was used to study the kinetics of NH₃ uptake and NOₓ formation from photochemistry initiated on irradiated (λ > 290 nm) TiO₂ surfaces under atmospherically relevant conditions. The s ...
DOI:
10.1021/ja401846x

30. Theoretical study on the specific role of superfine char surface oxygen—NO consumption mechanism

Author:
Hai Zhang; Xiumin Jiang; Jiaxun Liu; Jun Shen
Source:
Powder technology 2013 v.249 no. pp. 82-88
ISSN:
0032-5910
Subject:
carbon dioxide; combustion; desorption; heat production; models; nitric oxide; oxygen; temperature
Abstract:
... Mechanochemistry plays a crucial role in characterizing the superfine char surface chemistry properties. Conventional char with carbonyl oxygen(>CO) bonded to its surface is applied to represent the superfine char model for the first time. Comparisons of two char models are performed and the results reveal that surface oxygen is responsible for high reactivity of CO desorption. Comprehensive densi ...
DOI:
10.1016/j.powtec.2013.07.035

31. Synthesis and thermal behaviors of 4-amino-3,5-dinitro-1H-pyrazole

Author:
Ying-Lei Wang; Feng-Qi Zhao; Yue-Ping Ji; Qing Pan; Jian-Hua Yi; Ting An; Wei Wang; Tao Yu; Xian-Ming Lu
Source:
Journal of analytical and applied pyrolysis 2012 v.98 no. pp. 231-235
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; activation energy; differential scanning calorimetry; heat production; nitric oxide; nitrogen dioxide; nuclear magnetic resonance spectroscopy; pyrolysis; thermal stability
Abstract:
... 4-Amino-3,5-dinitro-1H-pyrazole (LLM-116) was synthesized by vicarious nucleophilic substitution (VNS) reaction, and its structure was characterized by NMR, IR and element analysis. The thermal decomposition kinetics and mechanism were studied by means of different heating rate differential scanning calorimetry (DSC), thermolysis in situ rapid-scan FTIR and simultaneous TG–MS technology. The resul ...
DOI:
10.1016/j.jaap.2012.08.014

32. Thermal decomposition studies on energetic triazole derivatives

Author:
Nimesh Sasidharan; B. Hariharanath; A.G. Rajendran
Source:
Thermochimica acta 2011 v.520 no.1-2 pp. 139-144
ISSN:
0040-6031
Subject:
carbon dioxide; heat production; mass spectrometry; nitric oxide; nitrogen; nitrogen dioxide; qualitative analysis; temperature; thermal degradation; thermal stability; triazoles; weight loss
Abstract:
... Thermal decomposition studies on two energetic triazole derivatives, viz N-(2,4-dinitrophenyl)-3-nitro-1,2,4-triazole (1a) and N-(2,4-dinitrophenyl)-3-azido-1,2,4-triazole (1b) have been investigated using simultaneous TG-DTA and TG-GC/MS techniques. Both compounds (1a) & (1b) showed good thermal stability, with exothermic decomposition peaks at 349°C and 217°C, respectively on DTA. Compound (1a) ...
DOI:
10.1016/j.tca.2011.03.031

33. Antioxidative defense and mitochondrial thermogenic response in brown adipose tissue

Author:
Vesna Petrović; Biljana Buzadžić; Aleksandra Korać; Bato Korać
Source:
Genes & nutrition 2010 v.5 no.3 pp. 225-235
ISSN:
1555-8932
Subject:
arginine; brown adipose tissue; copper; gene expression; heat production; manganese; messenger RNA; mitochondria; nitric oxide; protein synthesis; rats; superoxide anion; superoxide dismutase; temperature; transcription (genetics); transcription factor NF-kappa B
Abstract:
... Cold-exposure activates interscapular brown adipose tissue (IBAT) non-shivering thermogenesis that relies primarily on intensification of metabolic rate and uncoupling. During cold-acclimation, uncoupling in IBAT decreases superoxide (O₂ ·⁻) production and as an adaptive response the activities of manganese and copper, zinc superoxide dismutase (Mn- and CuZn-SOD, respectively) are decreased, as we ...
DOI:
10.1007/s12263-009-0162-1
PubMed:
20012899
PubMed Central:
PMC2935534

34. Deletion of Inducible Nitric-Oxide Synthase in Leptin-Deficient Mice Improves Brown Adipose Tissue Function

Author:
Becerril, Sara; Rodriguez, Amaia; Catalan, Victoria; Sainz, Neira; Ramirez, Beatriz; Collantes, Maria; Penuelas, Ivan; Gomez-Ambrosi, Javier; Fruhbeck, Gema
Source:
PloS one 2010 v.5 no.6 pp. -
ISSN:
1932-6203
Subject:
adipocytes; quantitative polymerase chain reaction; temperature; transcription factors; phenotype; nitric oxide; immunohistochemistry; body weight; leptin; mice; genes; inducible nitric oxide synthase; mutants; energy balance; heat production; lipid metabolism; brown adipose tissue; adipogenesis
Abstract:
... Background: Leptin and nitric oxide (NO) on their own participate in the control of non-shivering thermogenesis. However, the functional interplay between both factors in this process has not been explored so far. Therefore, the aim of the present study was to analyze the impact of the absence of the inducible NO synthase (iNOS) gene in the regulation of energy balance in ob/ob mice. Methods and F ...
DOI:
10.1371/journal.pone.0010962
PubMed:
20532036
PubMed Central:
PMC2881035

35. Induction of alternative respiratory pathway involves nitric oxide, hydrogen peroxide and ethylene under salt stress

Author:
Huahua Wang; Junjun Huang; Yurong Bi
Source:
Plant signaling & behavior 2010 v.5 no.12 pp. 1636-1637
ISSN:
1559-2324
Subject:
Arabidopsis; callus; ethylene; heat production; hydrogen peroxide; models; nitric oxide; ripening; salt stress; salt tolerance
Abstract:
... Alternative respiratory pathway (AP) plays an important role in plant thermogenesis, fruit ripening and responses to environmental stresses. AP may participate in the adaptation to salt stress since salt stress increased the activity of the AP. Recently, new evidence revealed that ethylene and hydrogen peroxide (H₂O₂) are involved in the salt-induced increase of the AP, which plays an important ro ...
DOI:
10.4161/psb.5.12.13775
PubMed:
21139431
PubMed Central:
PMC3115120

36. Susceptibility of a heterogeneous catalyst, Rh/γ-alumina, to rapid structural change by exposure to NO

Author:
Tom Campbell; Andrew J. Dent; Sofia Diaz-Moreno; John Evans; Steven G. Fiddy; Mark A. Newton; Sandra Turin
Source:
Chemical communications 2002 v. no.4 pp. 304-305
ISSN:
1364-548X
Subject:
aluminum oxide; catalysts; chemical reactions; heat production; nitric oxide; particle size; rhodium
Abstract:
... Metal particles in a Rh/γ-Al₂O₃ catalyst of differing particle size are oxidised by NO/He within 5 seconds at 313 K; rapid, highly exothermic dissociative chemisorption of NO is the initial step. ...
DOI:
10.1039/b106846f