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chemical research in chinese Universities 2008年第1期24卷 75-79页

作者： GAO Zheng-lun SHENG Jun HAO Shu-mei LIU Dan LIU Xiao-yu JI Hai-bin LI Juan ZHANG Xian-ping college of Life Science Jilin University Changchun 130012 P R. China changchun Institute of Biological product Changchun 130062 P. R China changchun University of Science and Technology Changchun 130022 P. R. China Jilin Institute for Food and Drug control Changchun 130062 P R. China

The 5＇-nontranslated leader（omega sequence） of Tobacco mosaic virus（TMV） was used as a translational enhancer sequence in the expression of the hepatitis B surface antigen（HBsAg） gene in transgenic ginseng callus cultures. The adr subtype HBsAg gene was placed under the control of the cauliflower mosaic virus（caMV） 35S promoter linking to the TMV leader sequence. The antisense omega sequence was used in a control construct. The resulting constructs cloned in the binary vector pBI121 were used to transform the ginseng callus tissue via the Agrobacterium-mediated procedure. The integration and expression of the HBsAg gene were evaluated by pcr and western blot, respectively. Enzyme-linked immunoassays（ELISA） using a monoclonal antibody directed against human serum-derived HBsAg revealed a three to four-fold enhanced expression of HBsAg in ginseng cells conferred by the TMV omega element.

关键词： Translational enhancer Omega sequence Hepatitis B surface antigen Ginseng callus

Anick resolution and the Minimal projective resolution of U_(q)+(c_(3))

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Acta Mathematica Sinica,English Series 2023年第6期39卷 1022-1052页

作者： Ling Ling MAO Xiao Long XIN School of Mathematics Northwest UniversityXi'an 710127P.R.China School of Science Xi'an Polytechnic UniversityXi'an 710048P.R.China

In this paper,from the Anick’s resolution and Grobner-Shirshov basis for quantized enveloping algebra of type c_(3),we compute the minimal projective resolution of the trivial module U_(q)+(c_(3))and as an applicatio... 详细信息

关键词： Anick resolution minimal projective resolution Grobner-Shirshov basis global dimension

Mechanisms of cytochrome c Extraction by reverse Micelles

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chemical research in chinese Universities 2001年第1期17卷 73-76页

作者： YU Yan chun QIAN Bao hua cHU Ying WU Zi sheng GAO chang qing Department of chemical Engineering Huaihai Institute of TechnologyLianyungang 222005P.R.China Department of chemistry Northeast Normal UniversityChangchun 130024P.R.China

The extraction of cytochrome c was carried out by means of phase transfer technique with three different reverse micellar systems, i.e. , a cTAB micellar solution in n butyl alcohol chloroform(volume ratio 4∶1), an AOT micellar solution in isooctane and a SDSS D 2EHpA micellar solution in isooctane. The extraction mechanisms were studied. The results show that the extraction mechanisms for the same proteins with different types of reverse micellar systems can be distinct. The extraction of cytochrome c with cTAB and SDSS D 2EHpA reverse micellar systems are carried out according to the mechanism of electrostatic interaction. However, in the extraction of cytochrome c with the AOT reverse micellar system, the electrostatic interaction between the protein and the surfactant is not important.

关键词： Mechanism cytochrome c Extraction reverse micelles

Boron-catalyzed α-c–H fluorination of aryl acetic acids

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Organic chemistry Frontiers 2022年第5期9卷 1315-1320页

作者： Haipeng Hu cuilin Wang Xin Wu Yangu Liu Guizhou Yue Gehong Su Juhua Feng college of Science Sichuan Agricultural University Ya’anSichuan625014P.R.China Sichuan Normal University Chengdu 610068P.R.China

The catalyticα-c–H fluorination of aryl acetic acids was achieved with good functional group tolerance in the presence of a boron catalyst.A series ofα-fluoro aryl acetic acids were obtained in a single step with high yields(up to 96%).The catalytic reaction was employed for the synthesis of bioactive molecules and the modification of profen ***,the reaction could be performed on a gram *** transformations were carried out.

关键词： catalyst acetic catalyzed

c-type natriuretic peptide stimulates chicken myoblast differentiation through NprB/Nprc receptors and metabolism pathway

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Journal of Integrative Agriculture 2022年第2期21卷 496-503页

作者： HUANG Hua-yun LIANG Zhong LIU Long-zhou LI chun-miao HUANG Zhen-yang WANG Qian-bao LI Shou-feng ZHAO Zhen-hua Jiangsu Institute of poultry Science Yangzhou 225125P.R.China college of Animal Science Yangtze UniversityJingzhou 8060550P.R.China

Skeletal muscle development is closely related with the amount of meat production and its quality in chickens. Natriuretic peptides(Nps) play an important role in myotube formation and fat oxidation of skeletal muscle in animals. The effect of c-type natriuretic peptide(cNp), an important member of the Nps, and its underlying molecular mechanisms in skeletal muscle are incompletely understood. Treatment of myoblasts with cNp led to enhanced proliferation/differentiation and significantly upregulated(prNA expression of the cNp receptors natriuretic peptide receptor B(NprB) and the clearance receptor c(Nprc). In cells exposed to cNp, 142 differentially expressed genes(84 up-regulation and 58 down-regulation)(pre identified by rNA-sequencing compared with those in control cells. Sixteen genes were significantly enriched(pc pathway, and six of them(phospholipase c β4, phospholipase c β2, phosphoglycerate mutase 1, creatine kinase B, peroxiredoxin 6 and cD38) were closely related to skeletal muscle development and differentially expressed. In conclusion, cNp stimulated differentiation of myoblasts by upregulating expression of the NprB and Nprc receptors and enriching key genes in the metabolic pathway.

关键词： cNp NprB/Nprc receptor myoblast differentiation metabolism pathway chicken

Ordered reproducing Hilbert Spaces over c^2

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Acta Mathematica Sinica,English Series 2008年第3期24卷 503-510页

作者： Sheng Zhao HOU Jie WANG Department of Mathematics Suzhou University Suzhou 215006 P R China Department of Mathematics Shanxi Normal University Linfen 041004 P. R. China

In this paper, we study the relation between the ordered reproducing Hilbert space and its reproducing kernel. A complete description of a similar and unitary equivalence of two quasi-invariant subspaces generated by ... 详细信息

关键词： ordered reproducing Hilbert spaces quasi-invariant subspaces

SpMH：A Solution to the problem of Malicious Hosts

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Journal of computer Science & Technology 2002年第6期17卷 738-748页

作者：周冲孙永强等 DepartmentofcomputerScienceandEngineering ShanghaiJiaotongUniversityShanghai200030P.R.China DepartmentofcomputerScienceandEngineering ShanghaiJiaotongUniversityShanghai200030P.R.C

In this paper, a solution to the problem of Malicious Hosts, named SpMH, issuggested. At first, Mobile Agent Blackbox construction Method based on Loureiro's protocol(MABcM-Lp) is suggested to convert a mobile agent into a Mobile Agent Blackbox (MAB)which makes the mobile agent difficult to be understood and tampered by malicious *** the same time, a protocol Tracing the Inputs/outputs and results (pTIr) is developed totrace the mobile agent running at a host, which can be used to detect and prove the attacks bymalicious hosts. It is proved that this solution is secure, correct, and robust. It is found firstlythat the detection method and the prevention method are complementary to each other, andthis is the first solution that integrated both of these two methods too.

关键词： mobile agent security the problem of malicious hosts computing withencrypted function reference states

preparation of c-Axis Oriented LiNb_(1-x) Ta_xO_3 Films on Si(111) Substrates by a Modified Sol-gel process

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chemical research in chinese Universities 2002年第3期18卷 255-257页

作者： QIANG Liang sheng FU Hong gang Department of Applied chemistry Harbin Institute of TechnologyHarbin 150001P.R.China School of chemistry and Engineering Heilongiang UniversityHarbin 150080P.R.China

In this work, we succeeded in the preparation of LiNb 1- x Ta x O 3 films on Si(111) substrates by means of sol gel process, and the usual sol gel process for the preparation of LiNbO 3 and LiTaO 3 films on Si substrates was improved by adding a 33% aqueous solution of cH 3cH 2OH to the mixed sols of LiNb(OcH 2cH 3) 6 and LiTa(OcH 2cH 3) 6 . The crystallization behavior of LiNb 1- x Ta x O 3 films on Si(111) substrates has been studied. Highly c axis oriented LiNb 1- x Ta x O 3 films have been obtained within the tantalum composition range of \{0ctors such as the hydrogen termination of the silicon surface, the rTp annealing process that provides the unidirectional heat flow and the preheating temperature are discussed to analyze the crystallization of the c axis oriented films.

关键词： LiNb 1- x Ta x O 3 film crystallization behavior Si substrate Sol gel

Specification and Verification of Multimedia Synchronization in Duration calculus

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Journal of computer Science & Technology 2003年第2期18卷 172-180页

作者：马华东 SchoolofcomputerScienceandTechnologyBeijingUniversityofpostsandTelecommunications Beijing100876P.R.C

This paper proposes a new method of specifying multimedia synchronization basedon Duration calculus (Dc), a real time interval logic, presents the completeness of the new model,and uses it to specify the temporal relations between multimedia objects. Moreover, the paperprovides a method of constructing a meta-script based on basic synchronization requirements. Someproperties of the formal specifications, including safety and liveness, are stated in Dc. Furthermore,the verification of the above properties is discussed in Dc semantic. compared with other methodsfor specifying multimedia synchronization, this method is more powerful and flexible, and it is goodat specifying the quantitative properties of multimedia synchronization.

关键词： liveness safety temporal synchronization duration calculus multimedia

Analytic properties for Holomorphic Matrix-valued Maps in c^2×2

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Acta Mathematica Sinica,English Series 2017年第11期33卷 1536-1548页

作者： chao FU Ye Zhou LI Xiao YAO School of Science Beijing University of Posts and TelecommunicationsBeijing 100876P.R.China Shanghai center Mathematical Sciences Shanghai 200433P.R.China

In this paper, we investigate some analytic properties for a class of holomorphic matrix- valued functions. In particular, we give a picard type theorem which depicts the characterization of picard omitting value in these functions. We also study the relation between asymptotic values and picard omitting values, and the relation between periodic orbits of the canonical extension on c^2×2 and Julia set of one dimensional complex dynamic system.

关键词： picard theorem holomorphic matrix-value functions asymptotic values Julia set