نتایج جستجو برای: formic acid

تعداد نتایج: 747589  

H. Sadeghi K. Gholami K.B. Lankarani M. Masoumpoor Mohsen Moghadami, S.M.B. Tabei S.M.H. Tabaei

Background: Methanol poisoning may result to death and permanent complications, sporadic cases of methanol poisoning are fairly rare and the largest experience are generally gained from managing methanol intoxication epidemics. The main metabolite of methanol is acid formic that is the prime metabolite responsible for toxic effects of methanol and since folate dependent systems are responsible ...

1996
Chen Xu

The adsorption and reaction of formic acid, HCOOH, on monolayer and multilayer palladium supported on a Mo(110) surface have been studied using temperature-programmed desorption (TPD) and high-resolution electron energy loss spectroscopy (HREELS). On multilayer palladium, formic acid adsorbs molecularly at 100 K and desorbs primarily intact upon heating to 200 K. A small amount of the adsorbed ...

2016
Min-Ho Jin Duckkyu Oh Ju-Hyoung Park Chun-Boo Lee Sung-Wook Lee Jong-Soo Park Kwan-Young Lee Dong-Wook Lee

For the application of formic acid as a liquid organic hydrogen carrier, development of efficient catalysts for dehydrogenation of formic acid is a challenging topic, and most studies have so far focused on the composition of metals and supports, the size effect of metal nanoparticles, and surface chemistry of supports. Another influential factor is highly desired to overcome the current limita...

2004
Sharan Shetty Dilip G. Kanhere Annick Goursot

We have performed ab initio molecular dynamics simulations to study the nature of the synchronous double proton transfer in formic acid dimer. In order to understand the evolution of the bonding during the double proton transfer, we have used the electron localization function and the molecular orbital isosurfaces. During the dynamics of the double proton transfer in formic acid dimer the two f...

Journal: :Journal of economic entomology 2009
Joseph B White Yong-Lak Park Todd P West Patrick C Tobin

With the recent decline of honey bees, Apis mellifera (L.) (Hymenoptera: Apidae), there is a need for alternative or supplemental crop pollinators, such as Osmia cornifrons (Radoszkowski) (Hymenoptera: Megachilidae). However, O. cornifrons propagation could be impeded by a cleptoparasitic mite, Chaetodactylus krombeini Baker. We investigated the effects of formic acid and wintergreen oil on mor...

Journal: :Journal of economic entomology 2008
Dennis vanEngelsdorp Robyn M Underwood Diana L Cox-Foster

Controlling populations of varroa mites is crucial for the survival of the beekeeping industry. Many treatments exist, and all are designed to kill mites on adult bees. Because the majority of mites are found under capped brood, most treatments are designed to deliver active ingredients over an extended period to control mites on adult bees, as developing bees and mites emerge. In this study, a...

Journal: :Biomacromolecules 2008
Andreia Vasconcelos Giuliano Freddi Artur Cavaco-Paulo

Wool and silk were dissolved and used for the preparation of blended films. Two systems are proposed: (1) blend films of silk fibroin and keratin aqueous solutions and (2) silk fibroin and keratin dissolved in formic acid. The FTIR spectra of pure films cast from aqueous solutions indicated that the keratin secondary structure mainly consists of alpha-helix and random coil conformations. The IR...

Journal: :Acta crystallographica. Section B, Structural science 2003
Ronald W H Small

The nature of the inclusions in ten clathrate complexes of Dianin's compound have been investigated by the use of electron-density difference maps. The guest species are the first eight straight-chain carboxylic acids, formic to octanoic, a branched-chain acid (dimethylacetic acid) and trifluoroacetic acid. The point-group symmetry of the clathrate cavity, 3, is satisfied by partial occupation ...

Journal: :The Journal of biological chemistry 1950
M B MATHEWS B VENNESLAND

Interest in the metabolic fate of formic acid has been renewed as the result of recent experiments showing active incorporation of carbon-labeled formate into normal body constituents of the pigeon (l-3) and the rat (4, 5). Prior to these findings, enzymes capable of catalyzing the oxidation of formic acid had been reported, widely distributed in plant and animal tissues (6). Only in the case o...

2016
Jing Hou Ming-Lei Yuan Jian-Hua Xie Qi-Lin Zhou

Acrylic acid is an important commodity chemical and is widely used as a base material for the industrial production of paints, plastics, superabsorbent polymers, rubber, and so on. Currently acrylic acid is produced by partial oxidation of propene, which is refined from petroleum. Catalytic hydrocarboxylation of acetylene with CO is another way to synthesize acrylic acid with high atom-economy....

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