نتایج جستجو برای: double ring infiltrometer

تعداد نتایج: 359448  

Journal: :iranian journal of mathematical chemistry 2013
h. tavakol h. mohammadi s. a. aslanzadeh

in the present work, dft calculations are employed to obtain the optimized structures of 4-acyl pyrazolone tautomers (19 tautomers) using b3lyp/6-311++g** calculations. inaddition, molecular parameters, ir frequencies and relative energies are extracted for alltautomers. the existence of aromatic ring, keto tautomer (versus enol tautomer), n-h bond(versus c-h bond) and c=n double bond (versus n...

تناسان, اسداالله, جمشیدی, معصومه, صدیقی, ایرج,

Introduction: Pneumonia is one of the most common infections during childhood. In children with recurrent bacterial pneumonia complete evaluation for underlying factors is necessary. The most common underlying diseases include: antibody deficiencies , cystic fibrosis , tracheoesophageal fistula and increased pulmonary blood flow. Vascular ring and its pressure effect is a less common cause of...

Journal: :The Journal of biological chemistry 2001
W Ranatunga D Jackson J A Lloyd A L Forget K L Knight G E Borgstahl

The human RAD52 protein plays an important role in the earliest stages of chromosomal double-strand break repair via the homologous recombination pathway. Individual subunits of RAD52 self-associate into rings that can then form higher order complexes. RAD52 binds to double-strand DNA ends, and recent studies suggest that the higher order self-association of the rings promotes DNA end-joining. ...

Journal: :Water 2022

Superabsorbent polymers (hydrogels) have been studied for their ability to influence soil hydraulic conductivity because they can store and release water due swelling properties. However, concerns related the increased use of synthetic hydrogels necessitates a switch bio-based hydrogels, which are renewable more biodegradable in comparison hydrogels. In this study, we synthesized lignin-based h...

2005
Bing Cheng

numerical instability can be problems. Therefore, the nonlinear least-squares regression method introduced Tension infiltrometer measurements have been used to measure by Logsdon and Jaynes (1993) has been widely used, steady-state infiltration rates at applied tensions. The measurements owing to its simplicity. They estimated saturated hycan be used to determined soil hydraulic properties thro...

2018
Ryuichi Ishida Tomoya Okamoto Fumihiro Motojima Hiroshi Kubota Hiroki Takahashi Masako Tanabe Toshihiko Oka Akira Kitamura Masataka Kinjo Masasuke Yoshida Michiro Otaka Ewa Grave Hideaki Itoh

The E. coli GroEL/GroES chaperonin complex acts as a folding cage by producing a bullet-like asymmetric complex, and GroEL exists as double rings regardless of the presence of adenosine triphosphate (ATP). Its mammalian chaperonin homolog, heat shock protein, HSP60, and co-chaperonin, HSP10, play an essential role in protein folding by capturing unfolded proteins in the HSP60/HSP10 complex. How...

Journal: :bulletin of the iranian mathematical society 2015
p. sahandi n. shirmohammadi

in this paper, we study some ring theoretic properties of the amalgamated duplication ring $rbowtie i$ of a commutative noetherian ring $r$ along an ideal $i$ of $r$ which was introduced by d'anna and fontana. indeed, it is determined that when $rbowtie i$ satisfies serre's conditions $(r_n)$ and $(s_n)$, and when is a normal ring, a generalized cohen-macaulay ring and finally a filter ring.

Journal: :Acta crystallographica. Section C, Crystal structure communications 2005
Vijayakumar N Sonar Sean Parkin Peter A Crooks

The crystal structure of the title compound, C(15)H(17)NO(2), contains two nearly identical but crystallographically independent molecules, each with a double bond connecting an azabicyclic ring system to a 3-methoxybenzylidene moiety. The space group is triclinic P-1. The benzene ring is twisted by 18.44 (5) and 22.35 (4) degrees with respect to the plane of the double bond connected to the az...

Journal: :Forests 2021

The paper deals with measurements of water infiltration carried out on a well-developed forest floor formed by needle-leaf litter Norway spruce. Three field methods (tension disk permeameter, single-ring infiltrometer and Guelph permeameter) were used to determine the soil hydraulic conductivity. results strongly influenced repellency at interface between O- A-horizons. This was severely repell...

Journal: :Journal of Hydrology and Hydromechanics 2021

Abstract The determination of soil hydraulic properties is important in several environmental sciences but may be expensive and time consuming. Therefore, during the last decades, a great effort has been made to develop relatively easy, robust, inexpensive methods for characterization. In this manuscript, we reviewed discussed different infiltrometer techniques light available experimental appl...

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