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Efficient oxidation of benzyl alcohol with heteropolytungstate as reaction-controlled phase-transfer catalyst

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Chinese Chemical Letters 2007年第8期18卷 936-938页

作者： Zhi Huan Weng Jin yan wang xi Gao Jian Department of Polymer Science and Materials Dalian University of Technology Liaoning Research Center of High Performance Resin Engineering and Technology Dalian 116012 China

A series of heteropolytungstates has been synthesized and utilized as catalysts to catalyze oxidation of benzyl alcohol with aqueous hydrogen peroxide. The results indicated that three of these catalysts showed the properties of reaction-controlled phasetransfer catalysis, and they had excellent catalytic ability to the oxidation of benzyl alcohol. No other by-products were detected by gas chromatography. Once the hydrogen peroxide was consumed completely, the catalyst precipitated from solvent, and the results of the catalyst recycle showed that the catalyst had high stability.

关键词： Heteropolytungstate Reaction-controlled phase-transfer Benzyl alcohol Benzaldehyde Hydrogen peroxide

Heteropolymolybdate as a New Reaction-controlled Phase-transfer Catalyst for Efficient Alcohol Oxidation with Hydrogen Peroxide

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Chinese Chemical Letters 2006年第6期17卷 848-850页

作者： Zhi Huan WENG Jin yan wang xi Gao JIAN Department of Polymer Science and Materials Dalian University of TechnologyLiaoning High Performance Polymer Engineering Research Center Dalian 116012

A new catalytic process for the synthesis of aldehyde from alcohol by oxidation with H202 with high selectivity, was studied. In this system, heteropolymolybdate [C7H7N（CH3）3]3 {PO4[MoO（O2）2]4} was utilized as the reaction-controlled phase-transfer catalyst to catalyze oxidation of benzyl and aliphatic alcohols. The molar ratio of H2O2 and alcohol was 0.75, no other by-products were detected by gas chromatography, the results of oxidation reaction indicated that the catalyst has high activity and stability.

关键词： Heteropolymolybdate reaction-controlled phase-transfer alcohol oxidation.

Influence of the adjuvant therapy on the survival of patients with stage Ⅱ pancreatic carcinoma

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Frontiers of Medicine 2010年第4期4卷 430-435页

作者： xi-yan wang Hai-Jun LI Hao WEN Dong yan Shu-Yong PENG Department of Hepatopancreatobiliary Surgery Affiliated Tumor HospitalXinjiang Medical UniversityUrumqi 830011China Department of Hepatobiliary Surgery The First Affiliated HospitalXinjiang Medical UniversityUrumqi 830054China Department of General Surgery Sir Run Run Shaw HospitalCollege of MedicineZhejiang UniversityHangzhou 310016China

This study aimed to investigate the effect of adjuvant therapy on the treatment of stage II pancreatic *** clinical data of 139 cases of stage II pancreatic carcinoma were analyzed *** overall 1-,3-,and 5-year cumulative survival rates of 139 patients were 40%,6%,and 3%,respectively,and the median survival time(MST)was 279 *** MST was 399 days for those with adjuvant therapy,210 days for those without adjuvant therapy,390 days for the radical resection group,270 days for the bypass operation and laparotomy group,and 132 days for the nonsurgical *** adjuvant therapy could not prolong the survival time and decrease the liver metastasis rate of the patients with stage II carcinoma signiﬁcantly in radical resection group(P>0.05).In the bypass operation and laparotomy group and nonsurgical group,the adjuvant therapy could improve the survival of the patients signiﬁcantly(P0.05);or between gemcitabine(GEM)regimen and 5-ﬂuorouracil regimen(P>0.05);or between GEM monotherapy and GEM combined with platinum/capeci-tabine(P>0.05).The proper adjuvant therapy can be suggested according to the general condition of the patients after radical resection for stage II pancreatic *** combined with radiation should be applied actively for the patients whose cancerous tissues were not radically *** clinical efﬁcacy of GEM combined with platinum/capecitabine is relatively better than GEM.

关键词： pancreatic neoplasms neoadjuvant therapy survival

Molecular Characterization and Expression Pattern of Rheb Gene in Inner Mongolia Cashmere Goat(Capra hircus)

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Agricultural Sciences in China 2011年第9期10卷 1452-1458页

作者： ZHENG Xu yanG Jiao-fu wang xiao-jing LIANG yan WU Man-lin SHI Jie-jun ZHANG Tao QIN Yin LI Shu-yu HAO xi-yan wang Zhi-gang LIU Dong-jun College of Life Science lnner Mongolia University/Key Laboratory of Mammal Reproductive Biology and Biotechnology Ministry of Education Hohhot 010021 P.R.China

As one member of the Ras super family, Rheb is an upstream regulator of mTOR signaling pathway, which regulates the process of cell-growth, proliferation and differentiation. In order to study the relationship between Rheb and mTOR in Inner Mongolian Cashmere goat （Capra hircus） cells, Ras homolog enriched in brain （Rheb） gene eDNA was amplified by RT-PCR. It is 555 bp in length and includes the complete ORF encoding 184 amino acids （GenBank accession no. HM569224）. The full eDNA nucleotide sequence has a 99% identity with that of sheep, 98% with cattle and 93% with human while their amino acids sequence shares identity with 98, 97 and 97% of them, correspondingly. The bioinformatics analysis showed that Rheb has a Ras family domain, two casein kinase II phosphorylation sites, two ATP/GTP-binding sites motifA （P-loop）, a prenyl group binding site （CAAX box）. Tissue-specific expression analysis performed by semi- quantitative RT-PCR. The Rheb gene was expressed in all the tested tissues and the highest level ofmRNA accumulation was detected in brain, suggesting that Rheb played an important role in goat cells.

关键词： Inner Mongolia Cashmere goat Rheb gene expression pattern

Significance of the preoperative guidance of dual-source CT in carotid body tumor

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Chinese Medical Journal 2010年第20期123卷 2816-2819页

作者： DENG yan wang xi-ming WU Le-bin SUN Cong DUAN yan-hua CHENG Zhao-ping WU Da-wei Shandong University Shandong Medical Imaging Research InstituteJinanShandong 250021China

Background Accurate views of the head and neck vessels, tumor angiogenesis and the relationship of tumor and the surrounding blood vessels are especially crucial to carotid body tumor （CBT） patients. The aim of this study was to explore the value of dual-source CT （DSCT） cerebral and carotid angiography in CBT *** DSCT cerebral and carotid angiography was performed on nine patients with CBT. Two-dimensional and three-dimensional reconstruction images were obtained by means of multiple planar reconstructions （MPR）,maximum intensity projection （MIP） and volume rendering （VR）. All patients were subjected to color Doppler flow imaging （CDFI） examination. Two kinds of examinations were performed in 3 days, and all patients were confirmed by *** DSCT angiography was successful in all patients. CBTs were diagnosed in 9 patients with 10 lesions （1 case had multiple bilateral CBTs）. The largest lesion was 12 cm in diameter, and the smallest one was 1.6 cm in diameter. All patients had clearly demonstrated head and neck vessels, tumor angiogenesis, and tumor relationship with the surrounding blood vessels. The internal and external carotid artery （ICA, ECA） were involved in 2 cases. There were 7 cases with basilar artery ring integrity, and 1 case had the posterior communicating artery absent; 1 case had middle cerebral artery stenosis; 4 cases （4 tumors） showed arterial phase homogeneous enhancement; 5 cases （6 tumors） had obvious heterogeneous enhancement where irregular low-density necrosis could be seen in the tumors. CDFI could demonstrate the nearby blood vessels and tumor structure, instead of tumor angiogenesis. However, DSCT can display both the tumor and the peripheral vascular tumor angiogenesis consistent with surgical *** DSCT cerebral and carotid angiography can provide reliable information for the operation. It might be a valuable CBT diagnostic method by showing accurate views of the CBT along with the bilateral neck

关键词： CT angiography carotid body tumor cerebral and carotid arteries

Non-junctional Cx32 mediates anti-apoptotic and pro-tumor effects via epidermal growth factor receptor in human cervical cancer cells

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中国药理学与毒理学杂志 2017年第10期31卷 971-972页

作者： Yi-fan ZHAO Yong-chang LAI Hui GE Yun-quan GUO Xue FENG Jia SONG Qin wang Li-xia FAN Andrew L HARRIS xi-yan wang Liang TAO Department of Anesthesiology Sun Yat-Sen Memorial HospitalSun Yat-Sen University Department of Pharmacology Zhongshan School of MedicineSun Yat-Sen University Tumor Research Institute Xinjiang Medical University Affiliated Tumor Hospital Department of Pathology Xinjiang Medical University Affiliated Tumor Hospital Department of Pharmacology Physiology and NeuroscienceNew Jersey Medical School-Rutgers UniversityNewark

OBJECTIVE To investigate the role of connexin proteins(Cx),which form gap junctions(GJ),in progression and chemotherapeutic sensitivity of cervical cancer(CaC x).METHODS We analyze the expression of Cx26,Cx30,Cx32 and Cx43 in human specimens consisting of:Normal cervix(n=78),CaCx FIGO stageⅠ(n=148),CaCx FIGO stageⅡ(n=165).In CaCx cell lines,Hela-Cx32(induced expression by doxycycline),C-33A(endogenously express Cx32)and si Ha(transiently transfected plasmid with Cx32),we detected the role of Cx32 against tostreptonigrin/cisplatin-induced apopotosisin presence or absence of functional GJ through using GJ inhibitors or low density ***,we observed the relativity of Cx32 and EGFR expression in human ***,we detected the role of EGFR signaling pathway in the process of Cx32 anti-apoptosis through suppressed EGFR expression by inhibitors or si RNA sequences in cell *** We firstly demonstrated the expression of Cx32 was highly upregulated and accumulated in cytoplasm in the CaCx specimens,and the degree of upregulation correlated with advanced FIGO ***,in three human cervical cell lines,Cx32 was shown to suppress apoptosis when GJ formation is *** matter in cases of CaCx or cell lines,Cx32 expression was highly correlated with expression of EGFR and the EGFR pathway is an essential component of the Cx32-induced anti-apoptotic *** Cx32,traditionally tumor suppressive protein,was shown to be tumor protective against chemotherapy through EGFR pathway in a GJ-independent way.

关键词： gap-junction connexin cervical cancer apoptosis epidermal growth factor receptor

Experimental study on the gas-stripping chamber of an E//B neutral particle analyzer

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Nuclear Science and Techniques 2024年第11期35卷 98-107页

作者： Long Ma De-Hao xie yan-xi wang Shuo wang Ji-Feng Han Wei-Ping Lin Jian-Li Liu xing-Quan Liu Yu-Guo Liu xiao-Bing Luo Yuan Luo Guo-Feng Qu Yu-Fan Qu Pei-Pei Ren Roy Wada Lin-Ge Zang Jing-Jun Zhu Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Southwestern Institute of Physics Chengdu 610218China Cyclotron Institute Texas A&M UniversityCollege StationTX 77843USA

Stripping units take a key role in the neutral particle analyzer(NPA).A renovated gas-stripping unit was constructed for the newly designed E//B *** H_(2)as the working gas,we measured the gas inlet pressure(P_(0))and vacuum chamber pressure(P_(3)).The pressure distribution inside the gas-stripping room was calculated with Ansys Fluent,using the measured P_(0)and P_(3)as boundary *** stripping efficiency of the stripping unit was then simulated utilizing the Geant4 Monte Carlo code for the H and D *** pressure P_(0)=40 Pa,which is one-sixth of what found in the previous design and corresponds to a thickness of 1.27×10^(17)atoms∕cm^(2),was obtained as the optimum working pressure for the upgraded stripping *** 50 kV electron cyclotron resonance(ECR)ion source platform was designed and constructed for E//B NPA calibration,and its performance has been *** the ECR ion source platform,we measured the efficiency of the stripping unit through an inverse experiment with proton *** compared the current ratios of measurements with and without H_(2)gas to Geant4 simulation *** found adequate agreement between the overall trends of the experiment and the *** significant deviation for incident energies below 20 keV may result from the scattering effects of low-energy protons,leading to reduced accuracy in single-scattering physics in Geant4 *** the scattering corrections observed in the reverse experiments obtains more accurate stripping efficiencies for H and D atoms in the energy range of 20–200 keV and the global efficiency with the maximum values of 95.0%for H atoms and 78.9%for D atoms at 200 keV.

关键词： NPA Gas-stripping ECR ion source Stripping efficiency Geant4

Novel methods for the deoxygenation of triphenylarsine oxide to triphenylarsine

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Chinese Journal of Chemistry 1985年第4期3卷 337-341页

作者： LU xi-yan wang Qi-Wen TAO xiao-Chun SUN Jun-Hui LEI Gui-xin $Shanghai Institute of Organic Chemistry,Academia Sinica,Shanghai Shanghai Institute of Organic Chemistry. Academia Sinica Shanghai

Two new and convenient methods using triphenyl phosphite or sodium dithionite todeoxygenate triphenylarsine oxide to triphenylarsine are described.P NMR spectra was used tostudy the reactivity of triphenylphosphite and triphenylphosphine in deoxygenating triphenylarsineoxide,pyridine-N-oxide and dimethyl sulroxide and the influence of complex MoO[SCN（CH）]on the *** mechanisms of above reactions are briefly discussed.

关键词： Ph Novel methods for the deoxygenation of triphenylarsine oxide to triphenylarsine

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制造业低碳信息管理创新与信息平台建设研究

情报科学 2017年第2期35卷 102-106页

作者：彭诗言王西北华大学经济管理学院吉林吉林132013 吉林省社会科学院经济研究所吉林长春130033 吉林大学东北亚研究院吉林长春130032

【目的/意义】制造业作为《中国制造2025》规划实施主体,其低碳创新发展情况,直接影响着该规划目标的实现程度,因此,制造业的低碳创新是落实实施该规划的重要路径之一,而低碳创新信息平台是实现低碳创新的重要保障。【方法/过程】在阐... 详细信息

【目的/意义】制造业作为《中国制造2025》规划实施主体,其低碳创新发展情况,直接影响着该规划目标的实现程度,因此,制造业的低碳创新是落实实施该规划的重要路径之一,而低碳创新信息平台是实现低碳创新的重要保障。【方法/过程】在阐述低碳创新信息平台是制造业低碳信息管理创新重要构成的基础上,解析在低碳信息管理创新中应通过转变思想、培育人才和完善保障机制等方式搭建起制造业低碳信息管理创新的基础服务平台。【结果/结论】在信息平台的起步发展阶段,政府应从政策激励方面做好制度保障,平台应从服务管理方面做好服务保障,科研院所应从成果转化方面做好创新保障,企业应从市场研究方面做好信息保障。

关键词：制造业低碳创新信息平台