نتایج جستجو برای: organo

تعداد نتایج: 1783  

Journal: :South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie 2012
Ahmed O Krim S Andronikou G Rubin

Two cases of gastric volvulus are presented to highlight the predisposing factors, mechanism and different types of volvulus, and the role of imaging in making the diagnosis. Eventration of the diaphragm and hiatus hernia are precipitating factors for developing organo-axial and mesentero-axial volvulus. Imaging is key to making the diagnosis and distinguishing the types of volvulus in orde...

Journal: :Minerals 2023

The research of organoclays has been occurring for many years to develop and add value these inorganic materials several industrial applications, such as pollutant absorbers or impermeable plastics. organoclay applications are intrinsically related organo-modification the structure clays. This study shows preparation characterization produced by a nontronite type clay (calcic bentonite) from To...

Journal: :Polymer Chemistry 2021

This review deals with recent organo-catalyzed/initiated developments of co-polymerization cyclic anhydrides and epoxides to access polyesters.

Journal: :Chemical communications 2009
Jouliana M El Khoury Xiaoli Zhou Liangti Qu Liming Dai Augustine Urbas Quan Li

Organo-soluble photoresponsive azo thiol monolayer-protected gold nanorods were synthesized; the resulting gold nanorods encapsulated by thiols on their entire surface with strong covalent Au-S linkages were very stable in both organic solvents and in the solid state without aggregation or decomposition.

Journal: :British journal of industrial medicine 1965
J L GRECH

The alterations in serum pseudo-cholinesterase, transaminases, and aldolase observed in 12 agricultural workers exposed to the organo-phosphorus insecticide, malathion, over a period of six months are recorded. A comparison with a series of unselected controls and a series of manual workers is made. Evidence is produced that the majority of the agricultural workers have been suffering from mino...

Journal: :Chemical communications 2015
Avijit Jana John Mondal Parijat Borah Sujan Mondal Asim Bhaumik Yanli Zhao

A versatile heterogeneous photocatalysis protocol was developed by using ruthenium bipyridyl tethered porous organosilica (Ru-POS). The versatility of the Ru-POS catalyst in organo-photocatalysis was explored by (i) oxidative aromatization of Hantzsch ester, (ii) reductive dehalogenation of alkyl halides, and (iii) functional group interconversion (FGI) of alcohols to alkyl halides.

Journal: :Organic & biomolecular chemistry 2013
Hiroyuki Kawai Zhe Yuan Etsuko Tokunaga Norio Shibata

A simple strategy avoiding the decomposition of a naked trifluoromethyl anion to difluorocarbene by a sterically very demanding organo-superbase without the help of a trifluoromethyl anion reservoir such as DMF is reported. The direct non-metallic trifluoromethylation of carbonyl compounds using fluoroform in the presence of t-Bu-P4 base afforded trifluoromethyl alcohols in high yields.

2007
M. Kleber

In this paper, we propose a structure for organo-mineral associations in soils based on recent insights concerning the molecular structure of soil organic matter (SOM), and on extensive published evidence from empirical studies of organo-mineral interfaces. Our conceptual model assumes that SOM consists of a heterogeneous mixture of compounds that display a range of amphiphilic or surfactant-li...

2008
C. T. MORTIMER

After the combustions, the phosphoric acid was, in fact, in aqueous solution, so that a correction for the heat of solution was necessary. These combustions were made in a static bomb, and as a result the concentration of phosphoric acid probably varied considerably in different parts of the bomb, leading to the comparatively large error of ±O·l per cent, associated with the heats of combustion...

2008
Rajkiran R. Tiwari Kartic C. Khilar Upendra Natarajan

Sodium Montmorillonite (NaMMT) has been modified via cation exchange reaction using three different organic cations. Basal spacings, interlamellar structure and thermal stability of these organo-montmorillonites (OMMT) clays have been characterized using wide angle X-ray diffraction (WAXD) and thermogravimetric analysis (TGA) techniques. Increase in the basal spacing due to organic modification...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید