نتایج جستجو برای: hydrogen ion

تعداد نتایج: 340529  

2009
W. Oohara O. Fukumasa

Pair plasmas consisting of only positiveand negative-charge particles of equal mass have attracted special attention because they maintain space-time symmetry. A fullerene pair-ion plasma, consisting of positive and negative ions of equal mass (C60 and C60), has been generated and its collective phenomena have been investigated experimentally [1]. In order to investigate more extensive physical...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

Journal: :محیط شناسی 0
الهام عظیمیان دانشجوی کارشناسی ارشد زمین شناسی زیست محیطی، دانشکدۀ علوم طبیعی، دانشگاه تبریز علی کدخدائی استادیار گروه زمین شناسی، دانشکدۀ علوم طبیعی دانشگاه تبریز مجید بغدادی استادیار گروه عمران، دانشکدۀ محیط زیست دانشگاه تهران اصغر اصغری مقدم دانشیارگروه زمین شناسی، دانشکدۀ علوم طبیعی، دانشگاه تبریز رضا مرادی کارشناسی ارشد زیست محیطی، دانشگاه چمران

oil exploration and production zones are very frequently contaminated with petroleum hydrocarbons or its derivatives. the most important exploration and production zones are located in south-west and south of the country, in iran. masjed soleiman city is located on an oil field. the soil of this region has been affected by the petroleum composition. mach petroleum seepages and springs (asphalt,...

2009
Jung-Chuan Chou

A measurement system was successfully fabricated to detect ion concentrations (hydrogen and chlorine) in this study. PIC18F4520, the microcontroller was used as the control unit in the measurement system. The measurement system was practically used to sense the H and Cl in different examples, and the pH and pCl values were exhibited on real-time LCD display promptly. In the study, the measureme...

2001
T. Gans

We report on the observation of fast hydrogen atoms in a capacitively coupled RF reactor by optical emission spectroscopy. For the analysis we use the prominent H emission line of atomic hydrogen in combination with other lines from molecular hydrogen and argon. Several characteristic emission structures can be identified. One of these structures is related to fast hydrogen atoms traveling from...

2010
Guang-Zhen Zhong

-Arrhythmia is a big headache for cardiologist for a long time. A new antiarrythmic drug with good effects and few side effects should be explored. Hydrogen sulfide, a newly found gaseous transmitter, was found to have multi-effects on a variety of ion channels. It may be a promising antiarrythmic drug. This article reviews the different effects of hydrogen sulfide on different ion channels.

2009
Xiao-Li Cheng Shan Gao Seik Weng Ng

In the title compound, C(4)H(6)N(3) (+)·NO(3) (-), the cation is coplanar with the anion (r.m.s. deviation = 0.048 Å), and links to the anion via an N-H⋯O hydrogen bond, forming an ion pair. In the crystal, adjacent ion pairs are further linked by N-H⋯O hydrogen bonds into linear chains running along the b axis.

Journal: :Applied and environmental microbiology 1979
J Carlsson G P Granberg G K Nyberg M B Edlund

Peptostreptococcus anaerobius VPI 4330-1 was exposed to atmospheric oxygen in a dilution bland (0.2% gelatin, salts, resazurin) solution. The organisms were rapidly killed when the solution contained cysteine. The organisms were effectively protected by catalase and horseradish peroxidase as well as by the metal ion-chelating agents 8-hydroxyquinoline and 2,2'-bipyridine. Superoxide dismutase i...

Journal: :The Review of scientific instruments 2016
K Ikeda D Wünderlich U Fantz B Heinemann M Kisaki K Nagaoka H Nakano M Osakabe K Tsumori S Geng O Kaneko Y Takeiri

A spectrally selective imaging system has been installed in the RF negative ion source in the International Thermonuclear Experimental Reactor-relevant negative ion beam test facility ELISE (Extraction from a Large Ion Source Experiment) to investigate distribution of hydrogen Balmer-α emission (Hα) close to the production surface of hydrogen negative ion. We selected a GigE vision camera coupl...

2011
T. S. Perova B. M. Armstrong J. Wasyluk P. Rainey S.J.N. Mitchell D. W. McNeill H. S. Gamble R. Hurley

The technology for thin Ge layer transfer by hydrogen ion-cut process is characterised in this work. Experiments were carried out to determine suitable hydrogen ion implantation doses in germanium for the low temperature ion cut process by examining the formation of blisters on implanted samples. Raman and Spreading Resistance Profiling (SRP) have been used to analyse defects in germanium cause...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید