نتایج جستجو برای: cs2.

تعداد نتایج: 852  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1388

امروزه شیمی محاسباتی، ساختار ، خواص مولکول ها و واکنش های شیمیایی را به دو روش نظری ساختار الکترونی و مکانیک مولکولی بر اساس قوانین فیزیکی به صورت عددی شبیه سازی می کند. بر این اساس، در این تحقیق با استفاده از روش ساختار الکترونی یک سطح انرژی پتانسیل چهار بعدی برای سامانه cs2-cs2 با محاسبات از اساس، انرژی برهم کنش برای پیکربندی های مختلف به دست آمده است. برای این کار از روش ابر مولکول و سطح محا...

1998
Toru Takebayashi Kazuyuki Omae Chizuru Ishizuka Tetsuo Nomiyama Haruhiko Sakurai

Objectives—A prospective cohort study was initiated to clarify whether the current level of exposure to carbon disulphide (CS2) is low enough to prevent occurrence of subclinical health impairments or to ameliorate health eVects due to past high exposure. This paper describes the eVects of exposure to CS2 on the nervous and endocrine systems, and the subjective symptoms in a baseline observatio...

Journal: :British journal of industrial medicine 1992
F Brugnone G Maranelli S Zotti I Zanella P De Paris S Caroldi A Betta

Assay of free and acid labile carbon disulphide (free and total CS2 respectively) in human blood was performed by gas chromatography/spectrometry. The method used a large dynamic head space volume and a "cryogenic trap". Blood CS2 concentration was measured in 42 subjects not occupationally exposed to CS2 (group A) and in 11 alcoholic subjects (group B) treated with disulfiram. Free CS2 concent...

Journal: :The Keio journal of medicine 1977
H Sakurai Y Seki

Records of blood pressure and body weight of CS2 workers were analyzed in relation to the levels of CS2 exposure at a Japanese rayon-producing fac tory. A cohort of 46 CS2 workers who had later been transferred to non-CS2 jobs showed first a statistically significant rise, which was then followed by two consecutive episodes of statistically significant falls in systolic blood pressure. These ep...

2015
Alisa L Rich Jay T Patel

Carbon disulfide (CS2) has been historically associated with the production of rayon, cellophane, and carbon tetrachloride. This study identifies multiple mechanisms by which CS2 contributes to the formation of CO2 in the atmosphere. CS2 and other associated sulfide compounds were found by this study to be present in emissions from unconventional shale gas extraction and processing (E&P) operat...

Journal: :Occupational and environmental medicine 1998
T Takebayashi K Omae C Ishizuka T Nomiyama H Sakurai

OBJECTIVES A prospective cohort study was initiated to clarify whether the current level of exposure to carbon disulphide (CS2) is low enough to prevent occurrence of subclinical health impairments or to ameliorate health effects due to past high exposure. This paper describes the effects of exposure to CS2 on the nervous and endocrine systems, and the subjective symptoms in a baseline observat...

Journal: :Journal of bacteriology 1990
M R Hyman C Y Kim D J Arp

Carbon disulfide has long been recognized as a potent inhibitor of nitrification, and it is the likely active component in several nitrification inhibitors suitable for field use. The effects of this compound on Nitrosomonas europaea have been investigated, and the site of action has been determined. Low concentrations of CS2 (less than 400 microM) produced a time-dependent inhibition of ammoni...

2011
Behzad Elahi Carolyn Gunraj Robert Chen

20 Paired associative stimulation (PAS) of the motor cortex leads to increased motor evoked potential 21 (MEP) amplitudes in the stimulated hand muscles. We hypothesized that evoking GABA A receptor-22 mediated short-interval intracortical inhibition (SICI) simultaneously with excitatory PAS would depress 23 long-term potentiation plasticity in motor cortex. Four different PAS paradigms were te...

2016
Alisa L. Rich Jay T. Patel Samiah S. Al-Angari

Carbon disulfide (CS2) has been historically associated with the manufacturing of rayon, cellophane, and carbon tetrachloride production. This study is one of the first to identify elevated atmospheric levels of CS2 above national background levels and its mechanisms to dysregulate normal glucose metabolism. Interference in glucose metabolism can indirectly cause other complications (diabetes, ...

Journal: :The journal of physical chemistry. A 2006
Ping Cheng Gregory K Koyanagi Diethard K Bohme

The reactions of 46 atomic-metal cations with CS2 have been investigated at room temperature using an inductively-coupled plasma/selected-ion flow tube (ICP/SIFT) tandem mass spectrometer. Rate coefficients and products were measured for the reactions of fourth-period atomic ions from K+ to Se+, of fifth-period atomic ions from Rb+ to Te+ (excluding Tc+), and of sixth-period atomic ions from Cs...

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