نتایج جستجو برای: acid gas

تعداد نتایج: 974536  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Yasuhiro Iida Yuko Suganuma Kunio Matsumoto Ikuo Satoh

A novel determination method for urea using an acid urease column-FIA system was developed, and the system was applied to the determination of urea in rice wine. This novel FIA system was characterized by CO2 detection due to the property of acid urease and by a microfluidic gas-diffusion device with the use of an ultra-thin hollow fiber membrane. A biosensing system fabricated in this study wa...

Journal: :Bioresource technology 2003
B A Sheridan T P Curran V A Dodd

Odour control from pig production facilities is a significant concern due to increased public awareness and the development of more stringent legislation to control production. Although many technologies exist, biofiltration is still the most attractive due to its low maintenance and operating costs. One of the key odour components, n-butyric acid, was selected for a laboratory scale biofilter ...

Journal: :Journal of clinical microbiology 1980
M A Lambert C W Moss

Peptostreptococcus anaerobius was found to metabolize tyrosine to p-hydroxyhydrocinnamic acid [3-(p-hydroxyphenyl)propionic acid]. This acid was detected in spent growth media by gas-liquid chromatography, and its identity was confirmed by mass spectrometry.

Journal: :The Journal of clinical investigation 1998
H M Schrager S Albertí C Cywes G J Dougherty M R Wessels

We used wild-type and isogenic mutant strains of group A Streptococcus (GAS) that expressed M protein, capsule, or both to study the function of M protein and the hyaluronic acid capsular polysaccharide in attachment of GAS to human keratinocytes. Types 6 and 24, but not type 18, M protein were found to mediate attachment of GAS to soft palate or skin keratinocytes, but this interaction was pre...

2011
Nicola Horstmann Pranoti Sahasrabhojane Bryce Suber Muthiah Kumaraswami Randall J. Olsen Anthony Flores James M. Musser Richard G. Brennan Samuel A. Shelburne

Sequencing of invasive strains of group A streptococci (GAS) has revealed a diverse array of single nucleotide polymorphisms in the gene encoding the control of virulence regulator (CovR) protein. However, there is limited information regarding the molecular mechanisms by which CovR single amino acid replacements impact GAS pathogenesis. The crystal structure of the CovR C-terminal DNA-binding ...

2005
Craig FREEMAN

Human glucuronate 2-sulphatase (GAS), which is involved in the degradation of the glycosaminoglycans heparan sulphate and chondroitin 6-sulphate, was purified almost 2000000-fold to homogeneity in 8 0 yield from liver with a four-step six-column procedure, which consists of a concanavalin A-Sepharose/Blue A-agarose coupled step, a DEAE-Sephacel/octyl-Sepharose coupled step, CM-Sepharose chromat...

Journal: :Journal of Applied Materials and Technology 2021

Claus process is a widely adopted to reduce emissions from refineries by converting H2S into elemental sulfur. On the other hand, Haldor Topsoe’s Wet Gas Sulfuric Acid (WSA) an alternative convert directly sulfuric acid. The purpose of this project was simulate both these state-of-the-art technologies and evaluate their suitability for various acid gas capacity concentrations. Three sustainabil...

Journal: :Applied and environmental microbiology 1979
S D Fazio W R Mayberry D C White

An improved chromatographic assay for muramic acid which is sufficiently sensitive for marine sandy sediments is described; it involves acid hydrolysis, thin-layer chromatography, and gas-liquid chromatography.

C. Mizrak H. Kutay M. Baylan M. Boga P. Cubukcu S. Ergul S. Naeim Saber T. Ayasan,

This study was conducted to determine the nutritive value of soybean varieties using in vitro methods and gas production technique.In vitro gas productions and gas production kinetics of soybean variety were determined at 0, 3, 6, 12, 24, 48, 72 and 96 h incubation times. This study revealed that there were variations among five different soybean varieties in terms of chemical...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
nabiollah mansouri dept. of environmental engineering, school of environmental and energy, science and research branch, islamic azad university, tehran mohammad reza massoudinejad dept. of environmental health, school of health, shahid beheshti university of medical sciences, tehran hasan asilian dept. of accupational health, school of medicine, tarbiat modares university, tehran azadeh mafreshi dept. of environmental engineering, school of environmental and energy, science and research branch, islamic azad university, tehran

background: no2 is a poisonous gas that potential to cause major threat to human being health and the environment, as a result, removing this gas from environment seems to be essential. methods: the study aimed to remove this gas from environment using iranian natural zeolite, clinoptilolite. after crushing and preparing two sizes of 1 and 2 mm zeolite they were activated in 380 to 420 ºc for 2...

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