نتایج جستجو برای: non standard nitrogen separation

تعداد نتایج: 1966278  

2002
J. W. F. Valle

I review the interpretation of solar and atmospheric neutrino data in terms neutrino oscillations and describe some ways to account for the required neutrino masses and mixing angles from first principles, both within topdown and bottom-up approaches. I also discuss non-oscillation phenomena such as ββ0ν which may probe the absolute scale of neutrino mass, and also reveal its Majorana nature. I...

Journal: :Journal of Research of the National Bureau of Standards 1954

2017
Moises A. Carreon Chongmin Wang

Natural gas consumption has grown from 5.0 trillion cubic feet (TCF) in 1949 to 27.0 TCF in 2014 and is expected to be ;31.6 TCF in 2040. This large demand requires an effective technology to purify natural gas. Nitrogen is a significant impurity in natural gas and has to be removed since it decreases the natural gas energy content. The benchmark technology to remove nitrogen from natural gas i...

Journal: :Scientific reports 2016
Juan Manuel Restrepo-Flórez Martin Maldovan

Being able to manipulate mass flow is critically important in a variety of physical processes in chemical and biomolecular science. For example, separation and catalytic systems, which requires precise control of mass diffusion, are crucial in the manufacturing of chemicals, crystal growth of semiconductors, waste recovery of biological solutes or chemicals, and production of artificial kidneys...

Journal: :Journal of environmental sciences 2015
Huidong Qiu Dongdi Sun Sameera R Gunatilake Jinyan She Todd E Mlsna

An improved method for trace level quantification of dicyandiamide in stream water has been developed. This method includes sample pretreatment using solid phase extraction. The extraction procedure (including loading, washing, and eluting) used a flow rate of 1.0mL/min, and dicyandiamide was eluted with 20mL of a methanol/acetonitrile mixture (V/V=2:3), followed by pre-concentration using nitr...

Journal: :Clinical chemistry 1969
J E Stitcher C R Jolliff R M Hill

The present study was undertaken to compare the nitrogen content of human feces as determined by the Kjeldahl technic and the micro-Dumas method as utilized in the automated Coleman nitrogen analyzer. The standard deviation between duplicate determinations of the same sample was 0.06% nitrogen in the case of the nitrogen analyzer and 0.02% nitrogen for the Kjeldahl method. The standard deviatio...

Journal: :journal of agricultural science and technology 2012
h. rasouli pirouzian j. hesari s. farajnia m. moghaddam sh. ghiassifar1

the main objective of this study was to investigate the effect of enterococci isolated from traditional lighvan cheese on the quality of iranian uf white during ripening. four samples of cheese were provided from four different cheese production units in lighvan region. strains of enterococci in these samples were isolated by standard microbiological methods and selective medium of kanamycin es...

Journal: :Biological communications 2021

The aim of our study was to assess the efficiency application biomodified nitrogen fertilizers for barley, reveal sources used biomass formation with use 15N stable isotope, and flows in system fertilizers–soil–plants–atmosphere. We demonstrated a model experiment ability plant growth-promoting bacteria Bacillus subtilis Ch-13 move from granules mineral roots colonize them effectively. effectiv...

2003
Helmut Hermann Matthias Krause Petra Georgi Jens Noack Andrei Touzik Pavel Janda Steffen Oswald Norbert Mattern Lothar Dunsch

focus of fundamental and applied materials research since the first preparation of macroscopic C60 quantities by Krätschmer et al. in 1990 [1]. The ability to encage atoms and small molecules opened the door to new structures which are highly reactive under standard conditions. Up to now low production yields and a time consuming multi stage separation hampered the search for applications of en...

A. Keshavarzi and M. J. Kazemzadeh Parsee,

Flow separation at water intake is the main cause of head loss and flow discharge reduction. &#10As a result, study of shape and size of separation is very essential when designing an optimum water intake. Water intake is normally built with a 90 degree angle to the main channel flow direction. However, the flow structure in this type of water intake consists of large separation size along wit...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید