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    题名 作者 年代 出处 被引量
1Establishment and characterization of four human hepatocellular carcinoma cell lines containing hepatitis B virus DNA显示文摘INTRODUCTIONHepatocelularcarcinoma(HCC)isoneofthemostprevalentmalignantdiseasesencounteredintheworld,kilingupto1milionpeoplea...Jae Ho Lee 1, Ja Lok Ku 1, Young Jin Park 1,2 , Kuhn Uk Lee 2, Woo Ho Kim 3 and Jae Gahb Park 1,2 1999World Journal of Gastroenterology1999,5,4:28
2A Novel Semiconductor CIGS Photovoltaic Material and Thin-Film ED Technology显示文摘In order to achieve low cost high efficiency thin film solar cells,a novel Semiconductor Photovoltaic (PV) active material CuIn 1-x Ga x Se 2 (CIGS) and thin film Electro Deposition (ED) technology is explored.Firstly,the PV materials and technologies is investigated,then the detailed experimental processes of CIGS/Mo/glass structure by using the novel ED technology and the results are reported.These results shows that high quality CIGS polycrystalline thin films can be obtained by the ED method,in which the polycrystalline CIGS is definitely identified by the (112),(204,220) characteristic peaks of the tetragonal structure,the continuous CIGS thin film layers with particle average size of about 2μm of length and around 1 6μm of thickness.The thickness and solar grade quality of CIGS thin films can be produced with good repeatability.Discussion and analysis on the ED technique,CIGS energy band and sodium (Na) impurity properties,were also performed.The alloy CIGS exhibits not only increasing band gap with increasing x ,but also a change in material properties that is relevant to the device operation.The beneficial impurity Na originating from the low cost soda lime glass substrate becomes one prerequisite for high quality CIGS films.These novel material and technology are very useful for low cost high efficiency thin film solar cells and other devices.ZHENG Guang fu 1,YANG Hong xing 1,MAN Cheuk ho 1,WONG Wing lok 2, AN Da wei 1 and John BURNETT 1(1 Centre for Development of Solar Energy Technology,Department of Building Services Engineering, The Hong Kong Polytechnic University,Hong Kong,C 2001Journal of Semiconductors2001,22,11:10
3Helicobacter pylori acquisition of metronidazole resistance by natural transformation in vitro显示文摘INTRODUCTIONGenetictransformationisaprocesbywhichaceltakesupnakedDNAfromthesurroundingmediumandincorporatesitintoitsowngenomi...HUA Jiesong 1, ZHENG Peng Yuan 1, Teo Keng Fong 1, Khin Mar Mar 2 and HO Bow 1 1998World Journal of Gastroenterology1998,4,5:8
4Developmental Lead Exposure Alters the Distribution of Protein Kinase C Activity in the Rat Hippocampus显示文摘Chronic low-level lead (Pb) exposure in children is known to cause a deficit in learning and memory. In vitro studies have demonstrated that Pb altered protein kinase C (PKC) activityt Especially, hippocampal PKC has been correlated with performance in several learning tasks. The effects of Pb exposure on hippocampal PKC were investigated during development at various postnatal ages: postnatal day (PN) 7, 14, 28, and 56. Two-tenth % Pb acetate was administered to pregnant and lactating dams and then administered to weanling rats in drinking water. PKC activity was measured in both membrane and cytosolic fractions from the hippocampi of the controls and Pb-exposed animals. Pb-induced increase in PKC activity in the cytosolic fraction was obsereved in the PN56 rats. In contrast, PKC activity was decreased by Pb at PN7 in the membrane fraction. Furthermore, a significant decrease in the ratio of membrane to cytosolic PKC activity which is representative of PKC distribution was observed in the PN28 and PN56 Pb-exposed rats relative to the same-age controls. This study indicates that chronic Pb exposure during development influences hippocampal PKC activity and distribution. These changes may be involved in the subclinical neurotoxicity of chronic Pb exposure in young children.HWEI-HSIEN CHEN TANGENG MA ARTHUR S. HUME AND ING K. HO(Deportment of Pharmacology and Toxicology, University ofMississippi Medical Center, 2500 North State Street,Jackson, MS 39216, USA) 1998Biomedical and Environmental Sciences1998,11,1:7
5Testicular sperm extraction and intracytoplasmic sperm injection in non obstructive azoospermia显示文摘Objective To report the experience in sperm extraction from testicular biopsies (TESE) performed from March 1996 to July 1998 in men with non obstructive azoospermia (NOA) Methods Comparisons of age, volume of both testes, serum FSH and testosterone in men, and histology of testicular samples in the first cycles between cycles with spermatozoa found and those without spermatozoa found were performed Comparisons of fertilization, cleavage and pregnancy rates between cycles with spermatozoa injected and those with spermatids injected were performed Results Spermatozoa were found in only 12 out of 26 first TESE cycles (46 2%) and other cycles had spermatids (round cells) only Age of men, history of mumps orchitis/oligozoospermia, volume of both testes and serum FSH/testosterone levels in men were not significantly different between cycles with and without spermatozoa The fertilization rate was significantly higher in cycles with spermatozoa injected than those with round cell injections (63 3% vs 23 2%, P <0 0001, Chi squared test) The pregnancy rate was 14 3% per cycle when spermatozoa were injected Conclusions TESE followed by Intracytoplasmic sperm injection (ICSI) is an effective treatment in patients with NOA Less than half of the patients undergoing TESE had spermatozoa recovered Age of men, volume of both testes and serum FSH/ testosterone levels in men were not useful in predicting successful recovery Compared to using ejaculated and epididymal spermatozoa, fertilization and pregnancy rates were achieved when testicular spermatozoa were used forNg Hung Yu Ernest, Lau Yee Lan, Yeung Shu Biu, So Wai Ki, Tam Po Chor and Ho Pak Chung 2000Chinese Medical Journal2000,,3:7
6Expression and Chromosomal Mapping of Mouse Gpx2 Gene Encoding the Gastrointestinal Form of Glutathione Peroxidase, GPX-GI显示文摘GPX-GI is a cytosolic tetrameric Se-dependent glutathione peroxidase, similar in properties to GPX-1. Unlike the almost ubiquitous GPX-1, GPX-GI is mainly expressed in the epithelium of gastrointestinal tract. GPX-GI contributes to at least fifty percent of GPX activity in rodent small intestmal epithelium. The total GPX activity consists of at least 70% of selenium-dependent GPX activity in this compartment.By analyzing a panel of mouse mterspecies DNA from the Jackson Laboratory’s backcross resource,we mapped Gpx2 gene to mouse chromosome 12 between D12Mit4 and D12Mit5, near the Ccs1 locus which contains a colon cancer susceptibility gene. A pseudogene, Gpx2-ps is mapped to mouse chromosome 7.Comparison of Gpx2 gene expression in three pairs of C57BL/6Ha and ICR/Ha mice which are respectively resistant and sensitive to dimethylhydrazine-induced colon cancer, we found a higher Gpx2 mRNA level in C57BL/6Ha colon than ICR/Ha colon. Interestingly, a lower level of GPX activity is found in the resistant strain of mice. Because GPX-1 has three times higher specific activity than GPX GI, our data suggest that the decreased GPX activity may result from a higher level of Gpx2 gene expression in those cells co-express GPx1FONG-FONG CHU R. STEVEN ESWORTHY YE SHIH HO MARGIT BERMEISTER KRISTINE SWIDEREK AND ROSEMARY W. ELLIOTT(Department of Medical Oncology, City of Hope Midical Center, Duarte,CA91010, USA Department of Psychiatry and Human Genetics,Mintal Health Research 1997Biomedical and Environmental Sciences1997,10,2:5
7Species differentiation and identification in the genus of Helicobacter显示文摘Asearlyasnineteencentury,incidentalpresenceofspiralorganismswasnotedinthestomachsofdogs[1],ratsandcats[2].Intheearlyyearsofth...HUA Jie Song, ZHENG Peng Yuan and HO Bow 1999World Journal of Gastroenterology1999,5,1:5
8Coexistence of Helicobacter pylori spiral and coccoid forms in experimental mice显示文摘AbstractAIMToinfectmicewithHelicobacterpylorianddetectimmuneresponseagainsttwoformsofH.pylori.METHODSAnisolateofH.pyloriobtai...HUA Jiesong 1, HO Bow 1, ZHENG Pengyuan 1, YEOH Khay Guan 2, NG Han Chong 1 and LIM Seng Gee 2 1998World Journal of Gastroenterology1998,4,6:2
9Measuring the Transaction Sector in the Australian Economy, 1911-1991显示文摘 Brian and Wai Ho Leong 1998Australian Economic History Review1998,38,3:1
10Weekend effect in diurnal temperature range in China: Opposite signals between winter and summer显示文摘Gong Daoyi Dong Guo and Chang-Hoi Ho 2006Journal of Geophysical Research2006,,:1
11Impact of Caregiving on Health and Quality of Life : A Comparative Popu- lation-based Study of Caregivers for Elderly Persons and Noncaregivers 显示文摘Ho S C Chan A Woo J Chong P and Sham A 2009Journals of Gerontology Series A: Biologi- cal Sciences and Medical Sciences2009,64,:1
12Existence of a Photonic Gap in Periodic Dielectric Structure显示文摘 C T Chan and C M Soukoulis 1990Physical Review Letters1990,65,:1
13A simple and efficient estimator for hyperbolic location显示文摘Y Chan T and Ho K C 1994IEEE Transactions on Signal Processing1994,42,8:1
14Fiber property modification by mechanical pretreatment显示文摘Yung Bun Seo Chan Ho Choi and Seung Won Seo 2002Tappi J2002,1,1:1
15Reaction of solder with Ni/Au metallization for electronic packages during reflow soldering显示文摘HO C E TSAI S Y and KAO C R 2001IEEE Trans Adv Packag2001,24,4:1
16Inhibitory effects of Hibiscus sabdariffa L extract on low-density lipoprotein oxidation and anti-hyperlipidemia in fructose-fed and cholesterol-fed rats显示文摘Chang-Che Chen Fen-Pi Chou Yuang-Chyan Ho Wes-Lung Lin Chin-Pin Chou Erl-Shyh Hao An-Chung Huang and Chau-Jong Wang 2004J Sci Food Agric2004,84,:1
17An approximately efficient TDOA localization algorithm in closed-form for locating multiple disjoint sources with erroneous sensor positions显示文摘Yang L and Ho K C 2009IEEE Transactions on Signal Processing2009,57,12:1
18A Design of Equalization Digital On-Channel Repeater for Single Frequency Network ATSC System显示文摘Yong - Tae Lee Sung Ik Park Ho Min Eum Jae Hyun Seo Heung Mook Kim Seung Won Kim and Jong Soo Seo 2007IEEE2007,,53:1
19Automatic tuning and adaptation for PID controllers: a syrvey显示文摘K J Alstrom T Hagglund C C Hang and W K Ho 1993Control Engineering Practice1993,1,4:1
20Housing and the Macro Eonomy:Hong Kong as a Oase显示文摘Lok Sang Ho and Gary Wai-chung Wong 2003OPPS WorKing Paper Series2003,,:1
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