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The effects of biodegradation on the compositions of aromatic hydrocarbons and maturity indicators i
By the aid of GC-MS technique,a series of sequentially biodegraded oils from Liaohe Basin have been analyzed. The result......
AIM:To assess the expression of selected microRNAs(miRNA) in hepatitis C,steatotic hepatitis C,noninfected steatotic and......
The electron spin resonance（ESR）and lumiuescence properties of MFX:Eu（M=Ca,Sr,Ba;X=Cl,Br,I）and correlations between them hav......
Electrochemical synthesis of poly(2,6-pyridinediamine)(PPa) in aqueous sodium hydroxide solution has been carried out by......
Kinetics of photocatalytic degradation of methylene blue(MB) over Ca Ti O3 was studied. Effects of the solution p H, the......
A bismuth(Ⅲ) PVC membrane ion selective electrode based on5-(3,4,5-trimethoxyphenyl)-4-amino-1,2,4-t
The construction,performance characteristics and application of a new bismuth(Ⅲ) PVC membrane electrode based on 5-(3,4......
Direct electrochemical formation of hydrogen peroxide(H2O2) from pure O2 and H2on cheap metal-free earth abundant cataly......
Influence of graphene oxide on electrochemical performance of Si anode material for lithium-ion batt
We have developed a Si/graphene oxide electrode synthesized via ultrasonication-stirring method under alkaline condition......
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Immature crude oils in the salt lake depositional environment are related to organic matter precipit
The present paper studies the mineralogy and geochemistry of a geological section in Jianghan basin. Widely distributed......
Relations between A-type granites and copper mineralization as exemplified by the Machangqing Cu dep
This paper deals with the relations between the Machangqing rockbody which corresponds to the A-type granites and porphy......
In order to research engineering geological properties of the soil in Zhenlai of western Jilin,especially the dispersivi......
In Vitro Characterizations of PLLA/β-TCP Porous Matrix Materials and RMSC-PLLA-β-TCP Composite Scaff
To develop a novel degradable poly (L-lactic acid)/β-tricalcium phosphate (PLLA/β-TCP) bioactive materials for bone t......
Electrochemical properties of CeMg_(11)Ni+x% Ni composites (x=0,50, 100 and 200) prepared by ball-mi
The electrochemical properties of the as-cast CeMg_(11)Ni and ball-milled CeMg_(11)Ni+x% Ni(x=0, 50, 100 and 200, mass f......
Recently procured outstanding achievements in iron and steel industry in China are presented by data or facts in steel ......
AIM: Aloe vera, plant extracts of Aloe barbadensis miller, is widely used in phytomedicine. The first case of acute hepa......
The Koenig-Knorr method is still the most useful method for the synthesis of glycosides thoughpartly inherent disadvant......
The present paper deals mainly with the relationships between the distribution of rare earth elements (REE) in differen......
目的：研究Ａｄａ蛋白质对ａｌｋＡ基因表达的调节，探讨Ａｄａ蛋白质与ａｌｋＡ基因有效转录的关系。方法：采用ＤＮＡ顺序测定和体外转录的方法，以ｌａｃ基因启动子为对照进行实验......
Mantle metasomatism by P- and F-rich melt/fluids: evidence from phosphate glass in spinel lherzolite
Spinel lherzolite xenoliths were found in phonolitic alkaline basalt in the Keluo area, Heilongjiang Province. Detailed ......
Alkaline-surfactant-polymer(ASP)flooding using sodium hydroxide as the alkali component to enhance oil recovery in Daqin......
In vitro antioxidant,cytotoxic,thrombolytic activities and phytochemical evaluation of methanol extr
Objective:To study the leaves of Adiantum philippense L.for their antioxidant,cytotoxicity and thrombolytic activities a......
Antiviral activities against influenza virus(FM1) of bioactive fractions and representative compound
OBJECTIVE: To study the antiviral activities of clemastanin B(CB), epigoitrin, phenylpropanoids portion(PEP) and the mix......
A new type of aromatic tetraamine containing biphenyl moiety in the side chain was synthesized via a modified Chichibabi......
Surface structure and catalytic activity of electrodeposited Ni-Fe-Co-Mo alloy electrode by partiall
Ni-Fe-Mo-Co alloy electrode was prepared in a citrate solution by electrodeposition, and then Mo and Fe were partially l......
Influence of steric and intramolecular inductive effects on the variable trends in R-X (R=Alkyl) bon
The question “why are the variation trends of R-X bond dissociation energy different?” is answered. The R-X bond disso......
Synthesis and evaluation of benzylisoquinoline derivatives for their inhibition on pancreatic lipase
The present study was designed to synthesize and evaluate a series of benzylisoquinoline derivatives. These compounds we......
It is of great significance and challenge to achieve direct conversion of cellulose to specific polyols,e.g.,ethylene gl......
Cesium hydroxide-catalyzed hydrothiolation of alkynyl selenides to highly stereo- and regioselective
In the presence of catalytic amount of cesium hydroxide the hydrothiolation of alkynyl selenides occurred at room temper......
Novel C-17-chloro-substituted derivative of vinorelbine or vinflunine has been regio-selectively synthesized via the chl......
The corrosion behavior of a NdFeB magnet obtained at room temperature,with and without ultrasonic were investigated.The ......
The transfer processes of organic pollutants during sewage - seawater mixing were simulated in three different mixing s......
酰胺作为稳定的合成中间体被广泛应用于有机合成和药物化学.因此,发展通用、化学选择性的酰胺直接转化的方法十分重要.在本工作中,......
Factors associated with increased incidence of severe toxicities following yttrium-90 resin microsph
AIM: To further define variables associated with increased incidences of severe toxicities following administration of y......
目的 应用ELISA方法检测骨髓间充质干细胞移植后角膜碱烧伤愈合过程中外周血及房水中的血管内皮生长因子(VEGF)、白细胞介素-2(IL-......
电池生产中,正极片切片后会进行一段时间的放置,测量正极片的含水量难以直接确定用于制作电池正极片是否变质。通过正极片放置在不......
苦瓜籽多肽K能有效改善胰岛素抵抗状态,具有显著的降糖效果。为提高苦瓜籽中多肽K的提取率,选育出多肽K含量较高的苦瓜籽品种,以5......
碱溶性羟乙基纤维素是纤维素的一种低醚化度的醚化产物,采用气固相的反应方法可以得到碱溶性良好、醚化度均一的羟乙基纤维素。研......
目的：探讨湛江地区骨质疏松症患者并发压缩性骨折情况。方法：收治骨质疏松症患者583例。调查内容包括患者入院基本情况、一般医学相......
对4份白肋烟（Nicotiana tabacun L.cv.Burley）品系,按叶片着生部位依次取样,分析了烟碱含量,结果表明,烟碱含量因叶片在植株上的着生......
NEW HETEROCYCLIC SYSTEM SYNTHESIS H THE REACTION OF 2,3-DIHYDRO-1,5-BENZOTHIAZEPINES WITH DICHLOROCA
The reaction of two series of 2,3-dihydro-1,5-henzothiazepines Ⅰ with dichloro-carbene,gave azirino[2,1-d][1,5]benzothi......
通过对铁木尔特热水沉积多金属矿床的地质特征，岩石化学，矿床地球化学以及交代蚀变等方面的研究，提出了成矿热水的形成机理，即是深部烃......
介绍了J.Leddy和J.P.Tesene进行的通过磁化作用改变电解二氧化锰在碱性锌锰电池中的放电机理的试验,实验结果表明磁化可提高碱锰电......
采用国产碱性果胶酶对棉针织物的精练加工进行了响应面分析法最优工艺研究．首先考察了沸水预处理对酶精练效果的影响，然后采用中心组......
某水电站工程位于东南亚某国，由于天然砂砾料缺乏，混凝土骨料就近选择花岗片麻岩人工骨料。其岩石矿物组成主要是斜长石、石英、钾长......
采用密度泛函理论（DFT）B3LYP方法得到具有有机穴状配体的碱金属化物M＋aza222M′-（M,M′=Li,Na,K）的几何结构.并使用了BHandHLYP方法计算......
目的：探讨转化生长因子-β1（TGF-β1）对老年人牙周膜细胞碱性磷酸酶活性和骨钙素分泌的影响。方法：将不同浓度的TGF-β1（0．5μg／L，1μg／L，2μ......
基于集团模型电荷自洽的EHT(Extended Hückel Theory)方法对K在石墨(0001)表面吸附态进行了优化计算。在3种不同的覆盖度(Θ)......
针对动物胶常温凝聚、热硬消耗能源且效率低的问题，以动物骨胶为主要原料，经过碱解、改性处理后得到了～种新型型芯粘结剂，并采用吹CO2......
