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Journal of Environmental Sciences 2007年第5期19卷 540-545页

作者： zhang bao-hua WU De-yi WANG Chong HE Sheng-bing zhang Zhen-jia KONG Hai-nan School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Zeolite synthesized from fly ash （ZFA） without modification is not efficient for the purification of NH4＋ and phosphate at low concentrations that occur in real effluents, despite the high potential removal capacity. To develop an effective technique to enhance the removal efficiency of ammonium and phosphate at low concentrations, ZFA was modified with acid treatment and the simultaneous removal of ammonium and phosphate in a wide range of concentration was investigated. It was seen that when compared with untreated ZFA, only the treatment by 0.01 mol/L of H2SO4 significantly improved the removal efficiency of ammonium at low initial concentrations. The behavior was well explained by the pH effect. Treatment by more concentrated H2SO4 led to the deterioration of the ZFA structure and a decrease in the cation exchange capacity. Treatment by 0.01 mol/L H2SO4 improved the removal efficiency of phosphate by ZFA at all initial P concentrations, while the treatment by concentrated H2SO4 （≥0.9 mol/L） resulted in a limited maximum phosphate immobilization capacity （PIC）. It was concluded that through a previous mild acid treatment （e.g. 0.01 mol/L of H2SO4）, ZFA can be used in the simultaneous removal of NH4＋ and P at low concentrations simulating real effluent.

关键词： zeolite fly ash acid treatment ammonium phosphate removal

Characteristics of an Indium-Rich InGaN p-n Junction Grown on a Strain-Relaxed InGaN Buffer Layer

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Chinese Physics Letters 2013年第4期30卷 174-176页

作者： YANG Lian-Hong zhang bao-hua GUO Fu-Qiang Xinjiang Laboratory of Phase Transitions and Microstructures of Condensed Matter Yili Normal UniversityYining 835000 Department of Physics Changji CollegeChangji 831100

An indium-rich InGaN p-n junction is grown on a strain-relaxed InGaN buffer *** results show that the n-InGaN is grown coherently on the buffer layer but the p-InGaN layer exhibits a partial strain *** fabricated InGaN p-n junction has a low reverse leakage current density on the order of 10^(-8)A/cm^(2)within the measured voltage range,and exhibits a wide spectral response due to the presence of band tail states or deep level states which origin from indium composition fluctuation or various *** measured peak responsivity at 438 nm is 31 mA/W at zero bias and reaches 118 mA/W at 3 V reverse *** addition,the Raman spectra of the p-and n-type InGaN alloys are also analyzed.

关键词： InGaN relaxed indium

The Up-conversion Laser Properties of a Non-polar Organic Dye and the Influence of Solvents and Pumping Wavelengths

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Chinese Chemical Letters 2006年第1期17卷 81-84页

作者： Xiao Qiang YU Xian zhang Gui bao XU hua Ping ZHAO Wei HE Zong Shu SHAO Xian Gang XU Min hua JIANG The National Key Lab of Crystal Materials Shandong University Jinan 250100

A non-polar organic dye, E, E-1, 4-bis[4＇-（N,N-dibutylamino）styryl]-2,5-dimethoxybenzene （DBASDMB）, has been synthesized and characterized, and its structure has been determined. Pumped with a 200fs pulse this dye showed the up-conversion laser properties. The influences of various organic solvents and different pumping wavelength on the laser properties have been demonstrated.

关键词： Up-conversion laser two-photon absorption non-polar organic dye.

Cloning of α-β fusion gene from Clostridium perfringens and its expression

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World Journal of Gastroenterology 2006年第8期12卷 1229-1234页

作者： Jia-Ning Bai Yan zhang bao-hua Zhao College of Life Science Hebei Normal University Shijiazhuang 050016 HebeiProvince China

AIM： To study the cloning of α-β fusion gene from Closindium perfringens and the immunogenidty of 0-6 fusion expression. METHODS： Cloning was accomplished after PCR amplification from strains NCTC64609 and C58-1 of the protective antigen genes of α-toxin and β-toxin. The fragment of the gene was cloned using plasmid pZCPAB. This fragment coded for the gene with the stable expression of α-β fusion gene binding. In order to verify the exact location of the α-β fusion gene, domain plasmids were constructed. The two genes were fused into expression vector pBV221. The expressed α-β fusion protein was identified by ELISA, SDS-PAGE, Western blotting and neutralization assay. RESULTS： The protective co-toxin gene （cpa906） and the β-toxin gene （cpb930） were obtained. The recombinant plasmid pZCPAB carrying α-β fusion gene was constructed and transformed into BL21（DE3）. The recombinant strain BL21（DE3）（pZCPAB） was obtained. After the recombinant strain BL21（DE3）（pZCPAB） was induced by 42℃, its expressed product was about 22.14% of total cellular protein at SDS-PAGE and thin-layer gel scanning analysis. Neutralization assay indicated that the antibody induced by immunization with α-βfusion protein could neutralize the toxicity of α-toxin and β-toxin. CONCLUSION： The obtained α-toxin and β-toxin genes are correct. The recombinant strain BL21（DE3）（pZCPAB） could produce α-β fusion protein. This protein can be used for immunization and is immunogenic. The antibody induced by immunization with α-β fusion protein could neutralize the toxicity of α-toxin and β-toxin.

关键词： Clostridium perfringens α-β fusion gene Cloning and expression

new anastomosis method for choledochojejunostomy by the way behind antrue pyloricum

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Chinese Medical Journal 2013年第24期 4633-4637页

作者： YANG Xin-wei YANG Jue WANG Kui zhang bao-hua SHEN Feng WU Meng-chao Eastern Hepatobiliary Surgery Hospital Second Military MedicalUniversity Shanghai 200438 China

Background Reflux cholangitis has been the most common In this study we intended to evaluate the perioperative and choledochojejunostomy. complication after Roux-en-Y choledochojejunostomy. long-term efficacy of a new anastomosis method for Methods Clinical data of 143 eligible patients who underwent choledochojejunostomy in the Eastern Hepatobiliary Surgery Hospital affiliated to the Second Military Medical University, China between January 2007 and December 2010 were retrospectively analyzed. Among the patients, 38 consecutive cases underwent this new anastomosis method for choledochojejunostomy （improved group, IG） and 105 underwent standard Roux-en-Y choledochojejunostomy （control group, CG）. Changes in the incidence of cholangitis, the time of beginning to eat liquid meals, post-operative delayed gastric emptying and liver function between the two groups were compared. Results There was no statistical difference in the levels of alanine transaminase, alkaline phosphomonoesterase and gamma-glutamy transferase between the two groups. The time of beginning to eat liquid meals was significantly shorter in IG than CG （P 〈0.05）. The incidence of delayed gastric emptying was lower in IG than CG, with statistical tendency between the two groups （P=0.052）. Among nine patients with different degrees of acute cholangitis in the two groups, one patient （2.6%） in IG and eight （7.6%） in CG suffered from acute cholangitis within six months of follow-up after discharge, but with no statistical difference between the two groups （P 〉0.05）. Of the nine patients with acute cholangitis, none in IG and four in CG were hospitalized for further treatment （P 〉0.05）. Conclusions Patients in IG had satisfactory perioperative and long-term prognosis with shorter time of beginning to eat liquid meals and lower incidence of delayed gastric emptying. This new procedure of choledochojejunostomy by the way behind antrue pyloricum was easy and safe to perform with no mortality and low complicat

关键词： cholangitis choledochojejunostomy anastomosis, prognosis

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“知识服务”概念解读的两个视角比较

图书馆论坛 2011年第2期31卷 1-2,5页

作者：张华宝华南师范大学图书馆广东广州510631

目前对于"知识服务"概念的解读多数是以"知识"为突破口,通过"知识"的属性来解读"知识服务"的内涵。文章侧重于将"知识服务"作为一个整体放入知识经济时代背景中来解读,突出其对知识经济社会的信息支持和智力支持,强调其时代特征、知识... 详细信息

目前对于"知识服务"概念的解读多数是以"知识"为突破口,通过"知识"的属性来解读"知识服务"的内涵。文章侧重于将"知识服务"作为一个整体放入知识经济时代背景中来解读,突出其对知识经济社会的信息支持和智力支持,强调其时代特征、知识含量和社会责任。

关键词：知识服务概念解读知识经济

Influence of soil organic matter contents on soil water characteristics of forests on east slope of Gongga Mountain

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Journal of Forestry Research 2007年第1期18卷 78-80页

作者： zhang bao-hua WANG Zhen-jian LIU Zi-ting huaNG Ai-min TANG Qing-xin He Yu-rong School of Environment and Planning Henan University Kaifeng 475001 P. R. China School of Environment and Planning Liaocheng University Liaocheng 252059 P. R. China Institute of Mountain Hazards ＆ Environment of Chinese Academy of Sciences Chengdu 610041 P. R. China

By testing soil organic matter （SOM） contents, soil water contents （SWC） within low suctions, and saturated infiltration rates of samples taken from east slope of Gongga Mountain of China, the enhancive effects of SOM contents on SWC within low suctions and saturated infiltration rates were quantified. The simulated functions might be applied on regional experience forest-hydrology model. The improving function of protecting forest floor and increasing SOM contents on forest ecosystem hydrological effects were also embodied.

关键词： Gongga Mountain Soil organic matter content Soil water content within low suction Saturated infiltration rate

Traffic flow prediction of urban road network based on LSTM-RF model

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Journal of Measurement Science and Instrumentation 2020年第2期11卷 135-142页

作者： ZHAO Shu-xu zhang bao-hua School of Electronic and Information Engineering Lanzhou Jiaotong UniversityLanzhou 730070China

Traffic flow prediction,as the basis of signal coordination and travel time prediction,has become a research point in the field of *** traffic flow prediction,researchers have proposed a variety of methods,but most of these methods only use the time domain information of traffic flow data to predict the traffic flow,ignoring the impact of spatial correlation on the prediction of target road segment flow,which leads to poor prediction *** this paper,a traffic flow prediction model called as long short time memory and random forest(LSTM-RF)was proposed based on the combination *** the process of traffic flow prediction,the long short time memory(LSTM)model was used to extract the time sequence features of the predicted target road ***,the predicted value of LSTM and the collected information of adjacent upstream and downstream sections were simultaneously used as the input features of the random forest model to analyze the spatial-temporal correlation of traffic flow,so as to obtain the final prediction *** traffic flow data of 132 urban road sections collected by the license plate recognition system in Guiyang City were tested and *** results show that the method is better than the single model in prediction accuracy,and the prediction error is obviously reduced compared with the single model.

关键词： traffic flow prediction long short time memory and random forest(LSTM-RF)model random forest combination model spatial-temporal correlation

A new anastomosis method for choledochojejunostomy by the way behind antrue pyloricum

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中华医学杂志(英文版) 2013年第24期126卷 4633-4637页

作者： YANG Xin-wei YANG Jue WANG Kui zhang bao-hua SHEN Feng WU Meng-chao Eastern Hepatobiliary Surgery Hospital Second Military Medical University

Background Reflux cholangitis has been the most common complication after Roux-en-Y *** this study we intended to evaluate the perioperative and long-term efficacy of a new anastomosis method for *** Clinical data of 143 eligible patients who underwent choledochojejunostomy in the Eastern Hepatobiliary Surgery Hospital affiliated to the Second Military Medical University,China between January 2007 and December 2010were retrospectively *** the patients,38 consecutive cases underwent this new anastomosis method for choledochojejunostomy(improved group,IG) and 105 underwent standard Roux-en-Y choledochojejunostomy(control group,CG).Changes in the incidence of cholangitis,the time of beginning to eat liquid meals,post-operative delayed gastric emptying and liver function between the two groups were *** There was no statistical difference in the levels of alanine transaminase,alkaline phosphomonoesterase and gamma-glutamy transferase between the two *** time of beginning to eat liquid meals was significantly shorter in IG than CG(P 0.05).Of the nine patients with acute cholangitis,none in IG and four in CG were hospitalized for further treatment(P >0.05).Conclusions Patients in IG had satisfactory perioperative and long-term prognosis with shorter time of beginning to eat liquid meals and lower incidence of delayed gastric *** new procedure of choledochojejunostomy by the way behind antrue pyloricum was easy and safe to perform with no mortality and low complication rates.

关键词： cholangitis choledochojejunostomy anastomosis prognosis

Imaging features and appropriate treatment strategy of a rare biliary tract neoplasm

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Chinese Medical Journal 2013年第13期126卷 2573-2576页

作者： YANG Xin-wei YANG Jue zhang bao-hua SHEN Feng WANG Kui WU Meng-chao Eastern Hepatobiliary Surgery Hospital Second Military Medical University Shanghai 200438 China

Mucin-producing bile duct tumors （MPBTs） are characterized by intraductal papillary tumorsproducing large amounts of mucin. The tumor comprises macroscopically prominent intraductal papillary neoplastic epithelia and produces a large amount of viscid mucin, resulting in dilatation of the bile ducts.1 These tumors of the peripheral bile duct, which include benign and malignant lesions, have also been referred to as intraductal growth- type peripheral cholangiocarcinomas,2 mucin-producing cholangiocellular carcinomas,3 intraductal papillary neoplasms （IPNs） of the biliary tract,4 IPNs of the liver,5 or IPNs of the bile duct.6 MPBTs have been the subject of recent attention due to its peculiar histopathology, biological and clinical behavior, varied radiological manifestations, and good prognosis of the patients] Due to the rarity of this disease entity and the non-specific clinical presentation, MPBTs are not well characterized. The purpose of this study was to define the precise diagnosis and correct management of MPBTs with the help of nine clinical cases observed in the last 10 years. The preoperative differential diagnosis, surgical procedure, and postoperative course of these nine cases were retrospectively reviewed.

关键词： biliary tract neoplasms mucin-producing bile duct tumors surgery prognosis