mostly hydrogen sulfide and ammonia

Hydrogen sulfide and neurogenic inflammation in a murine model of polymicrobial sepsis

Ngày tải lên : 10/09/2015, 08:32

... solutions and at pH 7.4, approximately one third of H2S exists as the undissociated form and two thirds dissociate into H+ and HS- (hydrosulfide ion); which may subsequently decompose to H+ and S2- (sulfide ... capsazepine on lung and plasma SP levels, and lung PPT-A mRNA expression in septic mice 112 Figure 4.2 Effect of NaHS and capsazepine on protein levels of cytokines and chemokines in the lung and liver ... plasma ALT and AST activities, and pulmonary edema (measured as lung wet-to-dry weight ratio) in septic mice 122 Figure 4.7 Effect of PAG and capsazepine on lung and plasma SP levels, and lung...

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Báo cáo y học: "Effects of hydrogen sulfide on hemodynamics, inflammatory response and oxidative stress during resuscitated hemorrhagic shock in rats" potx

Ngày tải lên : 13/08/2014, 21:21

... perfusion of 1.2 ml per hour of 0.9% NaCl in all groups Hydrogen sulfide donor preparation The dehydrated NaHS powder (sodium hydrogen sulfide, anhydrous, g, Alpha Aesar GmbH & Co, UK) was dissolved ... in in vitro measurements and in the design of the protocol, and drafted the manuscript MB carried out the Western blotting MdlB and LF carried out the surgical procedure and in vitro measurements ... investigations AM, PC and DH helped to design the study PR helped to design the study and to draft the manuscript LL participated in in vitro measurements PA designed the study, and coordinated and drafted...

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Báo cáo y học: " Administration of hydrogen sulfide via extracorporeal membrane lung ventilation in sheep with partial cardiopulmonary bypass perfusion: a proof of concept study on metabolic and vasomotor effects" ppt

Ngày tải lên : 14/08/2014, 07:21

... hour, followed by and 200 ppm during the third and fourth hours and finally and 300 ppm H2S during the fifth and sixth hours This procedure was chosen to detect the hemodynamic and metabolic effects ... plasma sulfide concentrations Plasma sulfide concentrations were determined in duplicate from arterial and ECML-efferent blood The baseline plasma concentration of sulfide was 1.9 ± 0.3 μM, and ... contributions MD and RCF performed the experiments and data analysis, contributed to the design and interpretation of the study and wrote the manuscript KK performed plasma H2S measurements and helped...

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A novel and cost effective hydrogen sulfide removal technology us

Ngày tải lên : 27/02/2015, 09:19

... (Nagl, 1997) Hydrogen sulfide can significantly damage mechanical and electrical equipment used for process control, energy generation, and heat recovery The combustion of hydrogen sulfide results ... amounts of hydrogen sulfide (H2S), ammonia (NH3), hydrogen (H2), nitrogen (N2), carbon monoxide (CO), saturated or halogenated carbohydrates, and oxygen (O2) Biogas is usually water saturated and also ... discussed in the next section Some physical and chemical properties of hydrogen sulfide are listed in Table Table 1, Physical and chemical properties of hydrogen sulfide (U.S EPA, 2003) Molecular formula...

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The role of hydrogen sulfide in normal and ischemic heart

Ngày tải lên : 11/09/2015, 09:57

... easily and rapidly administered, and create a low risk for intra-cerebral and systemic bleeding (White and Van de Werf, 1998) Currently available thrombolytic agents are streptokinase, urokinase, and ... Ischemic Postconditioning 21 1.6. Hydrogen sulfide (H2S) 23 1.6.1. Physical and chemical properties of H2S 23 1.6.2. Biosynthesis and catabolism of H2S 24 1.6.2.1. ... rhythm, cell viability and electrically-induced [Ca2+]i transients in the presence and absence of H2S synthase inhibitors 68 3.3.5. Effects of IP and SP on cell viability and electrically induced...

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Roles and relationship of gasotransmitters hydrogen sulfide nitric oxide in myocardial infarction

Ngày tải lên : 14/09/2015, 08:45

... Yes Table 1.1 Properties and characteristics of gasotransmitters H2S, NO and CO (Nakao et al., 2009) INTRODUCTION 1.3.1 Hydrogen Sulfide 1.3.1.1 Overview of H2S Hydrogen sulfide (H2S) is a colourless, ... and NO The third study examined this crosstalk on a common platform using both donors and inhibitors of H2 S and NO in in vivo MI mode ls NaHS and molsidomine attenuated infarct enlargement and ... inhibitors of CSE and NOS exacerbated these Crosstalk is evidently present between H2 S and NO Firstly, NaHS increased LV and plasma NO levels due to an upr egulation of eNOS and iNOS gene and protein...

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A novel role of hydrogen sulfide in wound healing and a new approach to wound dressing in rat model

Ngày tải lên : 26/09/2015, 09:39

... PhD A novel role for hydrogen sulfide (H2S) in wound healing in the rat Wound Repair and Regeneration [in progress] 2．Lingxu Hu, Philip K, Moore: The novel role of hydrogen sulfide in wound healing ... toluene and then embedded in paraffin wax 4um sections were thereafter cut and stained with hematoxylin and eosin (H&E) After deparaffinization and rehydration, sections were then washed, mounted and ... roles for gases such as nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) have been identified in physiology and in disease Nitric oxide was previously considered to be no more...

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Simultaneous hydrogen production and consumption in Anaerobic mixed culture fermentation

Ngày tải lên : 05/09/2013, 14:58

... of hydrogen consumption (molecular hydrogen or equivalents) on the overall hydrogen yield are previously discussed by Dinamarca and Bakke [7] The formation of reduced products, biomass growth and ... Quantification of the impact of hydrogen consumers on the total hydrogen production and hydrogen yield cannot be determined exactly based on the data obtained in this study and literature data It can, ... a decrease in butyrate and hydrogen production and an increase in acetate and ethanol with increasing pH The authors agree that the results are reproducible, reversible and independent of the...

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Hydrogen Energy and Fuel Cells docx

Ngày tải lên : 07/03/2014, 17:20

... TECHNICAL ANNEX Hydrogen and fuel cell technologies and related challenges 25 ANNEX I High Level Group on Hydrogen and Fuel Cells Technologies 32 ANNEX II High Level Group on Hydrogen and Fuel Cells ... reservoir Why hydrogen and fuel cells? sustainable high quality of life is the basic driver for providing tion of hydrogen Regenerative hydrogen, and hydrogen pro- a clean, safe, reliable and secure ... ANNEX Hydrogen and fuel cell technologies and related challenges Hydrogen production Hydrogen can be produced in many different ways, using a board reformers, which extract hydrogen from gaseous and...

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RAND Forum on Hydrogen Technology and Policy doc

Ngày tải lên : 15/03/2014, 22:20

... the conference attendees and both the introduction and collection itself have been reviewed and approved by RAND Science and Technology RAND Forum on Hydrogen Technology and Policy A Conference ... commodity prices, and regulations Uses of Hydrogen Hydrogen is now used primarily to produce ammonia and methanol, and to upgrade and desulfurize petroleum products at refineries Hydrogen is also ... sector needs to better understand the prospects for hydrogen energy and the value of investments in hydrogen, and its investment decisions need to reflect an understanding of the risks associated...

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influence of dopant in the synthesis, characteristics and ammonia sensing behavior

Ngày tải lên : 20/03/2014, 13:04

... morphology of the single and co-doped PANI and the direct effects on their conductivity and ammonia gas sensing properties mer, it was ﬁltered and washed several times with methanol and deionized water ... to apply the current and to measure the voltage drop respectively R and R0 are the resistances measured in the presence of ammonia and air respectively A known volume of ammonia gas was introduced ... at 1324 cm− and 1296 cm− for PANI_PTSA and PANI_HCl_PTSA respectively can be assigned due to –NH– stretching of secondary amine The bands at 1158 cm− and 1139 cm− for PANI_HCl_PTSA and PANI_PTSA...

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inorganic membranes for hydrogen production and purification a critical review and perspective

Ngày tải lên : 13/05/2014, 01:01

... delivery and distribution infrastructure (4) Efﬁcient fuel cells and other energy conversion technologies that utilize hydrogen One of the promising candidates for hydrogen separation and puriﬁcation ... economy’ is Iceland which has set a goal for a complete transition to hydrogen by 2030 In this scenario, hydrogen will be produced via Iceland’s geothermal and hydro resources and fed into fuel ... (in the 1970’s) and it was for hydrogen separation by polymeric membranes from ammonia purge gas streams, and to adjust the hydrogen/ carbon monoxide ratio in synthesis gas [9] Hydrogen separations...

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the hydrogen bond and the water molecule - y. marechal (elsevier, 2007) ww

Ngày tải lên : 04/06/2014, 16:03

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báo cáo hóa học: " Japanese experience of hydrogen sulfide: the suicide craze in 2008" pptx

Ngày tải lên : 20/06/2014, 00:20

... Medicine and Toxicology 2010, 5:28 http://www.occup-med.com/content/5/1/28 Page of Figure 220 cases during the period from March 28 to June 15, 2008 Profile of hydrogen sulfide Hydrogen sulfide ... Fe 3+ of cytochrome oxidase and protects it from oxidization by sulfide This mechanism is expected to ameliorate cellular anoxic conditions (Table 2) The efficacy and administration method of ... Cite this article as: Morii et al.: Japanese experience of hydrogen sulfide: the suicide craze in 2008 Journal of Occupational Medicine and Toxicology 2010 5:28 ...

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Báo cáo hóa học: " Relationship between structural changes, hydrogen content and annealing in stacks of ultrathin Si/Ge amorphous layers" docx

Ngày tải lên : 21/06/2014, 05:20

... Incorporation and thermal stability of hydrogen in amorphous silicon and germanium J Non-Cryst Solids 1996, 198-200:40 22 Chou YP, Lee SC: Structural, optical, and electrical properties of hydrogenated ... 6.3 and 13.5 nm/min for a-Si and a-Ge, respectively Hydrogenation was carried out by letting hydrogen flow into the deposition chamber at flow rates of 0.4, 0.8 and 1.5 ml/min These values correspond ... the a-Si single layers hydrogenated at flow rates of 0.4, 0.8 and 1.5 ml/min (#4, #8 and #15, respectively, in the plot) (b) Total H concentration in a-Si (solid black line) and aGe (dash blue line)...

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Báo cáo hóa học: " Graphene on ferromagnetic surfaces and its functionalization with water and ammonia" doc

Ngày tải lên : 21/06/2014, 05:20

... homogeneity, and cleanliness of the graphene/Ni(111) system were verified by means of lowenergy electron diffraction and core-level, as well as valence-band photoemission Water and ammonia were ... K point, there is a shift of this band to the higher binding energies of about 50 and 70 meV for the water and ammonia adsorptions, respectively Thus, ARPES and XAS data allow us to refer the ... (Eint) and the equilibrium distances (d0) between H2O and the surface of the freestanding graphene layer as obtained for the six selected geometries at DFT level with standard PBE functional and...

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HYDROGEN, OXYGEN AND NITROGEN AND GROWTH doc

Ngày tải lên : 29/06/2014, 15:20

... obtain nitrogen? What is ammonia? How is it formed? Where does it always exist? How plants take up ammonia? Ammonia is composed of nitrogen and hydrogen It has a pungent smell and is familiarly known ... Hydrogen and oxygen are never taken into consideration in manuring lands, as they are so readily obtained from the water constituting the sap of the plant, and consequently should ... rains, dews, &c., absorbs the ammonia which the decomposition of nitrogenous matter had sent into the atmosphere, and we find that all rain, snow and dew, contain ammonia This fact may be chemically...

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Báo cáo y học: "Effects of hydrogen sulfide on inflammation in caerulein-induced acute pancreatitis." ppt

Ngày tải lên : 11/08/2014, 08:22

... levels of chemokines (CCL2, CCL3 and CXCL1) and adhesion molecules (E- and P-selectins, ICAM-1, and VCAM-1) were measured in pancreas and lung tissue homogenate by a sandwich ELISA using DuoSet ELISA ... inflammation as evidenced by pancreas MPO and histology (Fig 2A and 2B) and pulmonary inflammation, as evidenced by lung MPO and histology (Fig 3A and 2B) and a significant reduction of inflammation ... significantly reduced all pancreatic and pulmonary adhesion molecules except pulmonary E-selectin (Fig 5: A, B, C and 5D) Discussion Hydrogen sulfide, like nitric oxide (NO) and carbon monoxide (CO) is...

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Báo cáo y học: " Bench-to-bedside review: Hydrogen sulfide – the third gaseous transmitter: applications for critical care" pptx

Ngày tải lên : 13/08/2014, 11:23

... panel) and after hours of organ ischemia and hours of reperfusion (right panel) in control swine (n = 7; open box plots) and in animals treated with the hydrogen sulfide donor sodium disulfide ... acute hydrogen sulfide inhalation: correlation with tissue sulfide concentrations in the rat brain, liver, lung, and nasal epithelium Toxicol Sci 2002, 65:18-25 Lowicka E, Beltowski J: Hydrogen sulfide ... monoxide, nitric oxide, hydrogen cyanide and hydrogen sulfide: chemical mechanism and physiological significance J Bioenerg Biomembr 2008, 40:533-539 44 Leschelle X, Goubern M, Andriamihaja M, Blottiere...

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Báo cáo y học: "Aspergillus fumigatus allergen expression is coordinately regulated in response to hydrogen peroxide and cyclic AMp" doc

Ngày tải lên : 13/08/2014, 13:22

... significance Results Selection of a standard comparator gene and validation of qRT-PCR Actin, b-tubulin, glucan synthetase subunit (Fks1) and glyceraldehyde phosphate dehydrogenase (GpdA) were assessed ... proteases) and proteins of unknown to date functions (Asp f 2, -4, -7 and -17) Asp f 11, -12 and -22 were induced 5-10 fold under the same conditions Expression of Asp f (peroxiredoxin) and Asp ... MOI - 1:200 and 1:2000 spores/macrophage The MOI used were chosen to give conditions where both fungus and macrophage were able to grow and remain viable for Fraczek et al Clinical and Molecular...

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