in the presence of造句
(151) Benzoyl chloride and ethyl acetoacetate react and hydrolyze in the presence of a catalyst to synthesize ethyl benzoylacltete, yielding 60%, with a purity of more than 98%.
(152) A method to prepare chemical manganese dioxide by directly oxidizing manganese hydroxide with air in the presence of catalyzer was investigated.
(153) It has been shown that proteins and enzymes can be bound covalently to freshly prepared magnetite in the presence of carbodiimide.
(154) From a DBA perspective, the roll-out operation progresses in the presence of a long-running reporting workload.
(155) The reaction takes place only in the presence of a catalyst.
(156) In the presence of the same source of DOM, a stronger chlorotoluron toxicity to YM-158 than to NM-9 was observed.
(157) Pinellin dissociated into subunits in the presence of sodium dodecyl sulfate or guanidine hydrochloride.
(158) However, in the presence of amplitude variation with offset (AVO), and particularly at large offsets, reflection coefficients and polarities may differ significantly from those at normal incidence.
(159) Congenital hyperinsulinism (CH) is a genetic disorder characterized by inadequate suppression of insulin secretion in the presence of recurrent hypoglycemia.
(160) Isobornyl ethyl ether was prepared by ethoxylation of camphene with absolute ethanol in the presence of DCP heat-resistant ion exchange resin.
(161) He repaired, however, the public scandal he had given by a sincere retractation made in the presence of Pope Gregory VII at a synod held in Rome in 1079, and died reconciled to the Church.
(162) In the presence of radiation trapping effect, the effective radiative rate is equel to the spontaneous radiation rate multiplying the transmission factor.
(163) In the presence of rhamnolipid, the degradation site changed from the granule surface to the medium aqueous phase and it led to a different degradation manner.
(164) Furthermore, the multi-functional trimer of N-(11-carboxyundecyl) maleimide was prepared via trimerization of the precursor in the presence of triphenylphosphine and phenol.
(165) Nipagin esters was synthesized by the esterification of n - butyl and iso- butyl alcohol with p - hydroxybenzoic acid in the presence of vitamin C.
(166) To effectively enhance the contraposition selectivity of chlorinating reaction the p-chlorotoluene was prepared by direct chlorination of toluene and chlorine gas in the presence of zeolite catalyst.
(167) These werecharacterized by cyclic voltammetry in the presence of ferrocenemonocarboxylate and hexamine ruthenium as probe molecules.
(168) The dispersion comprises the product of polymerization of a vinyl monomer in the presence of a free radical initiator in a reactive organic dispersion medium.
(169) Nickel coating is deposited through redox reaction in the presence of catalytic centers.
(170) In the presence of ethanonitrile and polyethylene glycol, anthrone reacts with ammonium ceric nitrate to form 1 nitroanthraquinone.
(171) Based on the theory of the probability interpretation algorithm, a statistical model of RLC interconnect delay in the presence of process variations was put forward.
(172) Synergistic chromogenic reaction of niobium with bromopyrogallol red and butyl rhodamine B in the presence of hexadecylpyridinium bromide was studied.
(173) In this paper, robustness of model reference adaptive control systems in the presence of high freqency parasitics, external disturbances and high freqency reference input is analysed.
(174) This paper presents a differential modulation diversity used in the presence of unknown multi-path.
(175) At high temperature and in the presence of phosphoric acid, the alkyl group is fractured into the corresponding olefine , according to which the alkyl of long-chain aliphatic amine can be identified.
(176) The reaction of benzotrichloride and chloroacetic acid to form chloroacetyl chloride and benzoyl chloride in the presence of catalyst was studied.
(177) In the presence of closed timelike curves, though, we generally will not be able to slice space-time that way.
(178) Peroxide crosslinking of syndiotactic polypropylene (sPP) in the presence of trimethylolpropane trimethacrylate (TMPTMA) was studied by using DSC method.
(179) The reaction of aryloxy acetic acid with thiosemicarbazide in the presence of dehydrating agent, POCl_3, affords a series of 2amino5aryloxymethyl1,3,4thiadiazoles under microwave irradiation (MWI).
(180) In the presence of noise, the performance of the peak search method can be further improved by using a maximum likelihood (ML) technique in the evaluation of wide band ambiguity function.
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