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| 1 | Potential role of tetrandrine in cancer therapy显示文摘Tetrandrine,a bisbenylisoquinoline alkaloid isolated from the dried root of Stephenia tetrandra S Moore,exhibits very broad pharmacological actions,including anti-tumor activity.The beneficial effects of tetrandrine on tumor cell cytotoxicity and radiosensitization,multidrug resistance,normal tissue radioprotection,and angiogenesis are most promising and deserve great attention.Tetrandrine has potential either as a tumoricidal agent or as an adjunct to chemotherapy and radiotherapy.to evaluate the potential clinical efficacy of tetrandrine for cancer therapy,more mechanism-based pharmacological,pharmacokinetic,and pharmacodynamic studies are required. | CHEN Yu-JenDepartment of Radiation Oncology, Mackay Memorial Hospital, Taipei, Taiwan 104, Department of Martial Arts, Chinese Culture University, Taipei, Taiwan 111, China | 2002 | Acta Pharmacologica Sinica2002，23，12： | 38 |
| 2 | Immunomodulatory effects and mechanisms of plant alkaloid tetrandrine in autoimmune diseases显示文摘Autoimmune diseases characterized by activation of immune effector cells and damage of target organs are currently treated with a combination of several disease-modifying antirheumatic gruge(DMARDs) that preserve different immunomodulatory mechanisms.such a combination treatment strategy not only provides synergistic effects but also reduces side effects from individual drug.Tetrandring(Tet),purified from a creeper Stephania tetrandra S Moore,is a bis-benszylisoquinoline alkaloid and has been used to treat patients with silicosis,autoimmune disorders,and hypertension in China's Mainland for decades.The accumulated studies both in vitro and in vivo reveal that Tet preserves a wide variety of immunosuppressive effects.Importantly,the Tet-mediated immunosuppressive mechanisms are evidently different from some known DMARDs.The synergistic effects have also been demonstrated between Tet and othe DMARDs like FK506 and cyclosporin.These results highlight Tet a very potential candidate to be considered as one of DMARDs in the treatment of autoimmune diseases,especially rheumatoid arthritis.This review summarizes evidence-based in vivo and in vitro studies on this potential Chinese immunosuppressive herb. | LAI Jenn-HaungRheumatology/Immunology and Allergy, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, China | 2002 | Acta Pharmacologica Sinica2002，23，12： | 18 |
| 3 | Dating of the Karakorum Strike-slip Fault显示文摘This paper mainly discusses the timing of the Karakorum strike-slip fault, and gives a brief introduction of its structures, offset, and deformational style. This fault strikes NNW-SSE. Asymmetrical folds, stretching lineation, S-C fabrics, feldspar and quartz (-porphyroclasts, domino structure, shear cleavages and faults in the fault zone are products of tectonic movements. They all indicate a dextral slip sense of faulting. Mylonitic bands are widely developed along this fault. Phengite appears, indicating rather high deformational pressure. Geochronological data indicate that the Karakorum strike-slip faulting occurred from 6.88(0.36 to 8.75(0.25 Ma. The cumulative displacement from Muztag Ata to Muji is about 135 km. | ZHOU Yong, XU Ronghua, YAN Yuehua, PAN Yusheng,Tsanyao Frank YANG, Wei LO and WU Chunming Laboratory of Lithosphere Tectonic Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029Department of Geology, National Taiwan University, 245 Choushan Road, Taipei 106-17, TaiwanDepartment of Geology, Chinese Culture University, Hwa-kang, Yang-Ming-Shan, Taipei, Taiwan Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 | 2001 | Acta Geologica Sinica(English Edition)2001，75，1： | 12 |
| 4 | Is inconsistency of α-fetoprotein level a good prognosticator for hepatocellular carcinoma recurrence?显示文摘AIM: To identify the clinical outcomes of hepato-cellular carcinoma (HCC) patients with inconsistent α-fetoprotein (AFP) levels which were initially high and then low at recurrence.METHODS: We retrospectively included 178 patients who underwent liver resection with high preoperative AFP levels (≥ 200 ng/dL). Sixty-nine HCC patients had recurrence during follow-up and were grouped by their AFP levels at recurrence: group Ⅰ, AFP ≤ 20 ng/dL (n = 16); group Ⅱ, AFP 20-200 ng/dL (n = 24); and group Ⅲ, AFP ≥ 200 ng/dL (n = 29). Their preoperative clinical characteristics, accumulated recurrence rate, and recurrence-to-death survival rate were compared. Three patients, one in each group, underwentliver resection twice for primary and recurrent HCC. AFP immunohistochemistry of primary and recurrent HCC specimens were examined.RESULTS: In this study, 23% of patients demon-strated normal AFP levels at HCC recurrence. The AFP levels in these patients were initially high. There were no significant differences in clinical characteristics between the three groups except for the mean recur-rence interval (21.8 ± 14.6, 12.3 ± 7.7, 8.3 ± 6.6 mo, respectively, P < 0.001) and survival time (40.2 ± 19.9, 36.1 ± 22.4, 21.9 ± 22.0 mo, respectively, P = 0.013). Tumor size > 5 cm, total bilirubin > 1.2 mg/dL, vessel invasion, Child classification B, group Ⅲ, and recurrence interval < 12 mo, were risk factors for survival rate. Cox regression analysis was performed and vessel invasion, group Ⅲ, and recurrence interval were independent risk factors. The recurrence inter-val was significant longer in group Ⅰ (P < 0.001). The recurrence-to-death survival rate was significantly bet-ter in group Ⅱ (P = 0.016). AFP staining was strong in the primary HCC specimens and was reduced at recur-rence in group Ⅰ specimens.CONCLUSION: Patients in group Ⅰ with inconsistent AFP levels had a longer recurrence interval and worse recurrence-to-death survival rate than those in group Ⅱ. This clinical presentation may be caused by a delay in the detection of HCC recurrence. | Chung-Bao Hsieh, Teng-Wei Chen, Division of General Sur-gery, Tri-Service General Hospital, Taipei 114, Taiwan, China Chung-Bao Hsieh, Kuo-Piao Chung, Graduate Institute of Health Care Organization Administration, National Taiwan University, Taipei 100, Taiwan, China Chi-Ming Chu, Section of Biostatistics and Informatics, De-partment of Epidemiology, School of Public Health, National Defense Medical Center, Taipei 114, Taiwan, ChinaHeng-Cheng Chu, Department of Internal Medicine, Tri-Service General Hospital, Taipei 114, Taiwan, ChinaCheng-Ping Yu, Department of Pathology, Tri-Service General Hospital, Taipei 114, Taiwan, China | 2010 | World Journal of Gastroenterology2010，16，24： | 11 |
| 5 | Metamorphosed mafic rocks with N-type MORE geochemical features in Hainan Island-Remnants of the Paleo-Tethys Oceanic Crust?显示文摘A number of metamorphosed mafic rocks occurred within the Paleozoic strata in the Chenxing and Bangxi regions at the northern side of the Changjiang-Qionghai Fault in Central Hainan Island. These metamorphosed mafic rocks are tholeiites in chemistry. They are characterized by extreme depletion of Th, Nb, Ta and LREEs, resembling the depleted N-type mid-ocean ridge basalts (MORE). Field relations suggest that the protolith of the metamorphosed mafic rocks were likely formed in Paleozoic. These metamorphosed mafic rocks with N-type MORB geochemical features were probably the remnants of the Paleo-Tethys oceanic crust. | LI Xianhua, ZHOU Hanwen, DING Shijiang, LEE Chi-yu, ZHANG Renjie, ZHANG Yeming & GE Wenchun1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2. Hainan Geological Survey, Haikou 570206, China 3. Department of Geology, Taiwan University, Taipei 106-17, China 4. Yichang Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, Yichang 443003, China | 2000 | Chinese Science Bulletin2000，45，10： | 9 |
| 6 | The Induction of Liver Microsomal Cytochrome P450 by Glycyrrhiza uralensis and Glycyrrhetinic acid in Mice显示文摘The effect of Glycyrrhiza uralensis Fisch (GRZ) aqueous extract and one of its active principles Glycyrrhetinic acid (GRT) on hepatic cytochrome P450 in mice were investigated. Oral administration of GRZ at 10g/kg/d or GRT at 50 mg/kg/d for 7 days was foulld to increase the P450 contents up to 4.6 fold compared with the controls. The activities of aryl hydrocarbon hydroxylase (AHH,3. 1 and 3. 3 fold), aminopyrine N-demethylase (ADM, 4. 2 and 3. 2 folds), and 7-ethoxycumarin O-deethylase (ECOD, 2. 8 and 2. 5 fold) were also shown to be increased. Westem blot analysis showed that the subtypes of P450 isoforms induced selectively by GRZ and GRT included CYP1A1 (1. 8 and 1. 5 fold over that of the control, respectively), CYP2B1 (both 1.3 fold), and CYP2C11(3 .2 and 3 .0 fold). Moreover, significant positive correlation between the P450 content or the isoforms and the corresponding enzyme activities mentioned above was observed. | HU WEN-YU LI YA-WEI HOU YAN-NING HE KAN (Department of Pharmacology, Instiute of Materia Medica, Chinese Academy of Medical Scicnces & Beijing Union Medical College, Beijing 100050, China) CHEN JIE-FU (Yang-Ming Medical University, Taipei) BUT PAUL PU | 1999 | Biomedical and Environmental Sciences1999，12，1： | 8 |
| 7 | S-Nitrosoglutathione and glutathione act as NMDA receptor agonists in cultured hippocampal neurons显示文摘瞄准:在 N-methyl-D-aspartate 上描绘联合在前和出生后的吗啡暴露的效果受体(NMDA ) 受体在上瘾吗啡的雌老鼠的后代的海马趾的神经原发信号。方法:有教养的海马趾的神经原和 synaptosomes 被准备从新生并且 2-week-old 后代,分别地控制或上瘾吗啡的雌老鼠。cytosolic Ca2+ 集中的增加([Ca2+] 我) 用 Fura-2 有教养的房间被测量,并且充斥从 synaptosomes 的使挫折版本被测量酶的联盟者。结果:两个都充斥引起一个剂量依赖者的使挫折和 NMDA 增加在[Ca2+] 我。氮的氧化物(没有) 施主, S-nitrosoglutathione (GSNO ) ,然而并非 3-morpholinosydnonimine,硝普化钠,和 S-nitroso-N-acetylpenicillamine,也导致了一[Ca2+] i 增加。引起一个剂量依赖者的 GSNO 和谷胱甘肽增加在[Ca2+] 有 56 和 414 micromol/L 的各自的 EC50 价值的 i。效果被 Mg2+ 或一个 NMDA 受体对手禁止并且由一个 glut 使挫折清道工人的存在是未受影响的。另外的谷胱甘肽衍生物,氧化谷胱甘肽, S-methylglutathione, S-ethylglutathione, S-propylglutathione,和 S-butylglutathione, dipeptides, Glu-Cys 并且 Cys-Gly,并且抗氧化剂, dithiothreitol 和 mercaptoethanol,失败了到 induce 一[Ca2+] i 增加。另外,谷胱甘肽引起了剂量依赖者增加在充斥从 synaptosomes 的使挫折版本。为 glutamate- 的最大的回答和 EC50 值, NMDA- , GSNO- ,并且导致谷胱甘肽[Ca2+] i 增加并且导致谷胱甘肽充斥使挫折版本在从控制和上瘾吗啡的雌老鼠的后代的神经原是难区分的。结论:GSNO 和谷胱甘肽充当 NMDA 受体收缩筋并且与海马趾的大脑片相对照,联合了暴露不调制 NMDA 受体在有教养的海马趾的神经原发信号的在前和出生后的吗啡。 | Ting-yu CHIN~2 Sheau-huei CHUEH~(3,5) Pao-luh TAO~42 Department of Bioseience Technology,Chung-Yuan Christian University,Chung-Li,Taiwan,China 3 Department of Biochemistry,National Defense Medical Center,Taipei,Taiwan,China 4 Department of Pharmacology,National Defense Medical Center Taipei,Taiwan,China | 2006 | Acta Pharmacologica Sinica2006，27，7： | 5 |
| 8 | Lamivudine does not increase the efficacy of interferon in the treatment of mutant type chronic viral heaptitis B显示文摘AIM:To study the role of lamivudine in improving the efficiency of interferon for the treatment of mutant type chronic hepatits B.METHODS:Fifteen patients with mutant type chronic hepatitis Bwere prospectively studied.All patients had liver histology and serology to prove the diagnosis of chronic hepatitis B.Each patient received4.5millionunits of interferon alpha-2a thrice weekly and 100mg of oral lamivudine daily for 24weeks.Patents were observed and tested for blood chemistry every week for the initial 4weeks and every 2weeks thereafter during the treatment until 24weeks.After the end of treatment,patients were followed up at4-week intervals for an additional6months,SerumHBVDNAlevels were tested using the liquid phase molecular hybridization assay.Those with non-detectable HBVDNA were also tested using the real-time polymerase chain reaction.One patient,who did not finish treatment due to depression.was excluded.RESULTS:At the end of treatment.7(50%)patients had serum ALTlevels within normal limits:12(86%)patients had serumHBVDNAlevels<5pg/mLusing the liquid phase molecular hybridization assay,but only8(67%)were<20copies/dL using the real-time polymerase chain reaction Six months after treatment only two(14%)patents had a susained complete response to the combination therapy with serum ALTlevel<35iu/Land undetectable serum HBVDNA levels.CONCLUSION:These pilot data showed that lamivudine did not increase the efficacy of interferon in the treatment of mutant type chronic hepatitsB.The liquid phase molecular hbridization assay was not sensitive enough to detect the lov HBVDNAlevels during combined interferon and lamivudine therapy. | Sien-Sing Yang Jui-Ting Hu Yung-Chih Lai Chi-Hwa Wu Liver Unit,Cathay General Hospital,Taipei,Taiwan,China Sien-Sing Yang Chao-Tien Hsu Medical Faculty,China Medical College and Hospital,Taichung,Taiwan,China | 2002 | World Journal of Gastroenterology2002，8，5： | 5 |
| 9 | TRANSPORT OF OXYGEN,NUTRIENTS AND CARBONATES BY THE KUROSHIO CURRENT显示文摘Measured concentrations of dissolved oxygen,phosphate,silicate,total alkalinity and calculated totalCO2 in a section between 121°E and 125°E across the Kuroshio near 22°N off Taiwan and thegeostrophic velocity were used to estimate the gross transport of oxygen,nutrients and carbonates. The flux of dissolved oxygen is 6.7×106 mol/s northward and 0.9×106 mol/s southward.The netflux equals 5.8×106 mol/s down-stream.The northward flux of phosphate is 22.6×103 mol/s;the south-ward flux is 1.4×103 mol/s.The net phosphate flux is 21.2×103 mol/s northward.The flux of silicateis 967×103 northward and 59×103 mol/s southward;the net transport is 908×103 mol/s down-stream.The flux of alkalinity is 75.5×106 mol/s northward,and 10.8×106 mol/s southward,the net flux is64.7×106 mol/s northward.For total CO2 the transport is 73.4×106 mol/s northward and 10.8×106 mol/ssouthward,or a net transport of 62.6×106 mol/s northward. | C. T. A. Chen(Institute of Marine Geology, National Sun Yat-Sen University, Kaohsiung, Taiwan)C. T. Liu and S. C. Pai(Institute of Oceanography, National Taiwan University, Taipei, Taiwan) | 1994 | Chinese Journal of Oceanology and Limnology1994，12，3： | 5 |
| 10 | Analyses of spring mean circulations for major andminor dust storm years in China-Mongolia area显示文摘To better understand the dust storm (hereafter DS) inducing circulation in the China-Mongolia (CM) DS activity area,the spring mean circulation features and differences on lower levels in three subregions of the CM DS area for the majorandminor-DS years have,as a whole (not partly),been analyzed,utilizing the National Centers for Environmental Prediction and the National Center for Atmospheric Research (NCEP/NCAR) reanalyzed gridded data,the observed DS frequency data in the CM area,and the composite analysis method.The main conclusions are as follows:(1) Judging from the differences in the DS-inducing systems,dust origins,paths of invading cold air,and main DS-strike areas,the whole CM DS area is roughly divided into the three subre-gions:the East-,Middleand West-CM subregions (in this paper,referred to as E-,M-,and W-CM).(2) In major DSs during spring over the E-CM,the middleand lower-level troughs or cyclones over the Japan Sea and northeastern China (NEC) domi-nate.The invading cold air along the northeastern (NE) or north by east (NE) path often causes the DS in the E-CM region.But nearly the opposite is true inminor DS during spring in E-CM.(3) In the major DS during spring over the M-CM region,the Mongolian troughs or cyclones are the main DS-inducing systems.The strong invading cold air along the northwestern (NW)or north by west (Nw) path causes the DSs in the M-CM region.(4) In the major DSs during spring over the W-CM region,the South Xinjiang heat lows prevail,the intruding cold air has a western path,and creates the DSs in South Xinjiang.(5) In the past 50 years,the DSs over the M-CM region have had the most severe impact on the preceding three subregions of the CM DS area.Overall,DS activities over all of three regions of the CM area decreased in the past (particularly,over Mand W-CM regions since the mid-1980s.But there existed a short and sudden increasing in E-CM in the years 2000-2002.(6) It is circulation changes and desertification evolutions that cause the yearly and decadal changes of DS in CM area,especially the former.With the backdrop of global warming in the future,perhaps the decreased DS activities over Mand W-CM will persist for some time again,and special attention should be paid to ones over E-CM or to the individual DS events over Mand W-CM. | MinHong Song 1,ZhengAn Qian 1,Ying Cai 1,ChungMing Liu 2 1.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China.2.Department of Atmospheric Sciences,Taiwan University,Taipei 106,China. | 2009 | Research in Cold and Arid Regions2009，1，4： | 3 |
| 11 | Some advancements in measurements of physical parameters of earth's material at high temperature and ultrahigh pressure显示文摘IT is very important to measure physical parameters of minerals, rocks, melts and fluids athigh pressure and high temperature. The data from these experiments can provide materialsfor explanation of geophysical observations on large scale, and information of geochemicalfield. Therefore, we set up measurement methods on elastic wave velocity, electrical conduc-tivity and differential thermal analysis in YJ-3000 ton press fitted with a wedge-type | XIE Hongsen, ZHANG Yueming, GUO Jie, XU Ji’an, SONG Maoshuang, XU Yousheng and HOU Wei1. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2, Institute of Earth Science, Academia Sinica, Taipei, China | 1997 | Chinese Science Bulletin1997，42，21： | 3 |
| 12 | Compressional Wave Velocities in Some Volcanic Rocks at Pressure up to 4.5 GPa显示文摘INTRODUCTIONThecompressionalwavevelocity(vp)inrockmeasuredathighpressureandhightemperatureisofsignificantimpor-tancetoelucida... | Zhou Wenge Zhao Zhidan Xie Hongsen Li Yuwen Guo Jie Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 Xu Ji ’an Institute of Earth Sciences, Academia Sinica, Nankang PO Box1 55, Taipei, Taiwan 115 | 1998 | Journal of Earth Science1998，17，2： | 3 |
| 13 | VELOCITY PROFILE OF SEDIMENT-LADEN OPEN CHANNEL FLOW显示文摘A detailed literature survey of the existing models for vertical velocity profiles of open channel flow for both clear water and sediment-laden water is performed. It is found that flow resistance and suspended sediment particles affect velocity profiles significantly. The Karman constant K of the logarithmic law is equal to 0.41 near the channel bed but far from the bed the value will change due to flow resistance and sediment suspension. The exponent of the power law velocity profile is also affected by those two factors. A general logarithmic law and a general power law for the description of velocity profiles arc proposed herein and verified by the experiment data presented by several investigators. Satisfactory results were obtained. | LEE Hong Yuan and YU Wei Sheng Associate Professor, Dept. of Civil Engineering, National Taiwan University, Taipei, Taiwan, China Graduate Research Assistant, Dept. of Civil Engineering, National Taiwan University, Taipei, Taiwan, China | 1991 | International Journal of Sediment Research1991，6，1： | 2 |
| 14 | PHYSICAL MODELING OF HYDRAULIC DESILTATION IN TAPU RESERVOIR显示文摘A movable bed physical model was constructed to investigate hydraulic desiltation by flushing and lateral erosion in the Tapu reservoir, Taiwan. The model scaling is based on the requirement for dynamic similarity of cohesive sediment deposit initiation in flushing processes. For model scaling, flume experiments investigating the initiation of cohesive sediment deposits were carried out to establish the relationship between critical shear stress of the flow and dry density of the deposit. Experiments in the physical model were then performed to measure the variations of the reservoir water level, the outlet discharge and the outflow sediment discharge. The processes of emptying and flushing were observed and analyzed in the main flushing channel. One of the experiments was conducted to simulate the on-site flushing operations on June 11, 1997. The results showed that the total 0cumulative flushed sediment volume by physical modeling was close to that by numerical simulation. To deal with the fioodplain deposits, experiments of lateral erosion as an auxiliary method were also conducted in the physical model to investigate the effectiveness and applicability for the0 Tapu reservoir. | Jihn-Sung LAI and Fi-John CHANG Assistant Research Fellow, Hydrotech Research Institute, National Taiwan University, Taipei, 10617, Taiwan Professor, Department of Agriculture Engineering and Hydrotech Research Institute, National Taiwan University, Taipe | 2001 | International Journal of Sediment Research2001，16，3： | 2 |
| 15 | ENCAPSULATION OF STRONG SOLID ACID NANOPARTICLES IN MESOPOROUS CHANNEL HOSTS显示文摘Mesoporous molecular sieve with Al-promoted sulfated rirconia (SZA) based strong solid acid nano-particles within its mesoporous channels was synthesized by using a one-step incipient wetness impregnation method with zirconium sulfate and aluminum sulfate as the precursors. The assemblies of SZA/MCM-41 were obtained by thermal decomposition of the precursors in air.The resultant composite was characterized with various techniques such as nitrogen physisorption, X-ray diffraction, SEM and TEM. It was shown that the well-ordered channels of MCM-41 arranged in hexagonal arrays as well as the hollow tubular morphology was retained. The strong solid acid nanoparticles were isolated born each other and highly, dispersed in the channels. Nitrogen sorption showed the expected decrease in pore volume. The catalytic activity of SZA/MCM-41 composite in the isomerization of n-butane was dramatically improved in comparison to bulk SZA or SZA/silica. | Chen Changlin and Xu Nanping, Mou Chungyuan and Cheng Soofin (College of Chemical Engineering, Naming University of Chemical Technology, Nanjing 210009) (Department of Chemistry, National Taiwan University, Taipei 106) | 2000 | 化工学报2000，51，S1： | 1 |
| 16 | UltrastructuralobservationonthepollenwalldevelopmentinEucommiaulmoidesOlivMeitaiColorPrintCo,SporeFloraofTaiwan[M],(杜仲花粉壁发育的超微结构观察)[J]显示文摘 | HuangTC(黄增泉) Taipei Ltd LiuN(刘宁) LiangJN(梁静南) | 1981 | 西北植物学报1981，29，9： | 1 |
| 17 | Isolated rectal diverticulum complicating with rectal prolapse and outlet obstruction: Case report显示文摘The occurrence of rectal diverticula is very rare, with only sporadic reports in the literature since 1911. Symptomatic rectal diverticula are encountered even less frequently.Treatments of these complicated events range from conservative treatments to major surgical interventions.We present a hitherto unreported occurrence of isolated rectal diverticulum complicated with rectal prolapse and outlet obstruction. Delorme's procedure resulted in subsidence of symptoms and resolution of the diverticulum. It provides a minimal invasive surgical technique to successfully address the reported malady. | Chuang-Wei Chen, Shu-Wen Jao, Huang-Jen Lai, Ying-Chun Chill, Jung-Cheng Kang, Division of Colon and Rectal Surgery, Department of Surgery Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan, China | 2005 | World Journal of Gastroenterology2005，11，48： | 1 |
| 18 | Identification of illegal coal tar dyes constituents in mucous cosmetics by HPLC method 显示文摘 | Wu Kun Shan Wu An-Bang Huang Ming-Chuan Chen Chau- Yang(Graduate Institute of Pharmaceutical Science Taipei Medical College Taipei Taiwan) | 1999 | Yaowu Shipin Fenxi1999，7，2： | 1 |
| 19 | Rashba electron transport in one-dimensional quantum waveguides显示文摘The properties of Rashba wave function in the planar one-dimensional waveguide are studied, and the following results are obtained. Due to the Rashba effect, the plane waves of electron with the energy E divide into two kinds of waves with the wave vectors k 1 =k 0 +k δ and k 2 =k 0 -k δ , where k δ is proportional to the Rashba coefficient, and their spin orientations are +π/2 (spin up) and -π/2 (spin down) with respect to the circuit, respectively. If there is gate or ferromagnetic contact in the circuit, the Rashba wave function becomes standing wave form exp(±ik δ l)sin[k 0 (l-L)], where L is the position coordinate of the gate or contact. Unlike the electron without considering the spin, the phase of the Rashba plane or standing wave function depends on the direction angle θ of the circuit. The travel velocity of the Rashba waves with the wave vector k 1 or k 2 are the same hk0/m * . The boundary conditions of the Rashba wave functions at the intersection of circuits are given from the continuity of wave functions and the conservation of current density. Using the boundary conditions of Rashba wave functions we study the transmission and reflection probabilities of Rashba electron moving in several structures, and find the interference effects of the two Rashba waves with different wave vectors caused by ferromagnetic contact or the gate. Lastly we derive the general theory of multiple branches structure. The theory can be used to design various spin polarized devices. | LIU DuanYang 1 , XIA JianBai 1,2 & CHANG YiaChung 2 1 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Beijing 100083, China 2 Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan 11529, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 0 |
| 20 | An AI Embedded Object-Oriented Approach for Formulating Computable General Equilibrium显示文摘This paper proposes and illustrates an AI embedded object-oriented methodology to formulate the computable general equilibrium (CGE) models. In this framework, a CGE model is viewed as a collection of objects embedded AI or namely agents in computer world, corresponding to economic agents and entities in real world, such as government, households, markets and so on. A frame representation of major objects in CGE model is used for trade and environment. Embedded Al object-oriented approach (or software agent) is used in the CGE model representation can able to narrow the gap among the semantic representation, formal CGE (mathematical) representation and computer and algorithm representation, and to improve CGE in understanding and maintenance etc. In such a system, constructing a CGE model to appear an intuitive process rather than an abstract process. This intuitive process needs more understanding of the substance of economics and the logic underlying the problem rather than mathematical notation. | Li Tong (Department of Automatic Control Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China) Chen Shuheng (Department of Economics, National Chengchi University, Taipei, 11623) Feng Shan (Department of Automatic Control | 2000 | Journal of Systems Engineering and Electronics2000，11，1： | 0 |
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