نتایج جستجو برای: gases

تعداد نتایج: 42917  

2005
V. I. Yukalov

One-dimensional Bose gases are considered, interacting either through the hardcore potentials or through the contact delta potentials. Interest in these gases gained momentum because of the recent experimental realization of quasi-one-dimensional Bose gases in traps with tightly confined radial motion, achieving the Tonks-Girardeau (TG) regime of strongly interacting atoms. For such gases the F...

2010
MORRIS B. JACOBS

The public health aspects of incinerator exhaust gases are discussed first in the light of the physio­ logical response induced by specific contaminants such as sulfur oxides, nitrogen oxides, and other inorganic gases and aldehydes, organic acids, esters, polynu� clear hydrocarbons' , and other organic compounds; second, with respect to their relation to illness caused by air pollution in gene...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Sara Seager

The discovery and characterization of exoplanets have the potential to offer the world one of the most impactful findings ever in the history of astronomy--the identification of life beyond Earth. Life can be inferred by the presence of atmospheric biosignature gases--gases produced by life that can accumulate to detectable levels in an exoplanet atmosphere. Detection will be made by remote sen...

2006
D. Nakashima S. Herrmann U. Ott A. El Goresy T. Nakamura

Introduction: The KLE98300 meteorite is an Antarctic meteorite and is classified as an EH3 chondrite [1]. In this meteorite, we found large numbers of graphite grains associated with Fe-Ni metal. Such graphite grains are considered to be products of parent body metamorphism [2, 3]. Isotopic compositions of carbon and nitrogen in graphite and in bulk meteorites give important clues to the parent...

2013
Nicoleta Chivu Mojtaba Kahrizi

Gas ionization sensor (GIS), made of two parallel plates, works on measuring the breakdown voltage of gases that is unique for each gas. The gas breakdown inside the gas chamber occurs due to the ionization of gas molecules by accelerated electron impacts. The acceleration of electrons is very depended on the effective electric field they experience. It is shown that metallic or semiconductor n...

2018
Abdulrahman Abdullah Alkandari Samer Moein

Received Jan 9, 2018 Revised Mar 2, 2018 Accepted Mar 18, 2018 Because of rising dependency on fossil fuels, and rising amounts of toxic gases in the environment, it found that people are in need of a way to ensure the safety specifically those that live in cities. An approach is suggested in this paper, that is economical yet affords good detection, and can give accurate readings that can be a...

2013

Water contains oxygen which may make a human breathe under water like a fish. Centrifugal separator can separate dissolved gases from water. Carrier solution can increase the separation of dissolved oxygen from water. But, to develop an breathing device for a human under water, the enhancement of separation of dissolved gases including oxygen and portable devices which have dc battery based dev...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2008
S Paramasivam Gamola Z Fortenberry Afolabi Julius Kenneth S Sajwan A K Alva

Increase in concentrations of various greenhouse gases and their possible contributions to the global warming are becoming a serious concern. Anthropogenic activities such as cultivation of flooded rice and application of waste materials, such as sewage sludge which are rich in C and N, as soil amendments could contribute to the increase in emission of greenhouse gases such as methane (CH(4)) a...

Journal: :Journal of the American Chemical Society 1899

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