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Search Results: 1 - 10 of 31829 matches for " Ming-Tai Kuo "
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Heat Treatment Effects on the Mechanical Properties and Morphologies of Poly (Lactic Acid)/Poly (Butylene Adipate-co-terephthalate) Blends
Hsien-Tang Chiu,Szu-Yuan Huang,Yan-Fu Chen,Ming-Tai Kuo,Tzong-Yiing Chiang,Chi-Yung Chang,Yu-Hsiang Wang
International Journal of Polymer Science , 2013, DOI: 10.1155/2013/951696
Abstract: In this study the relationships between mechanicals properties and morphology of the poly (lactic acid) (PLA)/poly (butylene adipate-co-terephthalate) (PBAT) blends with or without heat treatment were investigated. The differential scanning calorimetry (DSC) analysis showed that blends have a two-phase structure indicating that they are immiscible. On the other hand, the PLA/PBAT (30/70) blend achieved the best tensile and impact strength because of its sea-island morphology, except for high PBAT content. The PLA/PBAT (70/30) and PLA/PBAT (50/50) blends showed irregular and directive-layer morphologies, in scanning electron microscopy (SEM) analysis, producing a break cross-section with various fiber shapes. Both blends showed lower tensile strength and impact strength than the PLA/PBAT (30/70). After heat treatment, the PLA/PBAT blends showed high modulus of tensile and HDT because of a high degree of crystallization. The high degree of crystallization in the blends, which originated in the heat treatment, reduced their impact strength and elongation. However, the effect of high degree of crystallization on the PLA/PBAT (30/70) blend was small because of its sea-island morphology. 1. Introduction The large-scale production and consumption of plastics has created several problems: diminishing oil resources, increased discharge of CO2 into the atmosphere, and environmental pollution caused by waste plastics. However, the development and acceptance of biodegradable polymers might be a solution to the waste plastics problem. Polylactic aced (PLA) is a biodegradable thermal plastic that can be manufactured from biomass materials, such as cornstarch or beet sugar [1–3]. Although PLA has excellent biodegradability and tensile strength, its elongation ability, impact strength, shock absorbance, toughness, physical aging, and heat deflection properties are unsatisfactory for practical applications [4, 5]. Therefore, many researchers have attempted to increase the toughness, rigidity, and biodegradability of PLA by blending it with various biodegradable soft polymers, including poly (propylene carbonate) (PCC) [3], poly (butylene succinate adipate) (PBSA) [4], poly (butylene adipate-co-terephthalate) (PBAT) [5], and poly (amide elastomer) (PAE) [6]. To improve the heat distortion temperature of PLA, it can be dispersed with nanomontmorillonite or melt-blended with high-temperature-resistant engineering plastics [7, 8]. However, the resulting improvement in toughness remains far less than that of soft polymers. In recent years, much attention has increased on
Electron transport in solid-state dye-sensitized solar cells based on polyaniline

Guo Li,Liang Lin-Yun,Chen Chong,Wang Ming-Tai,Kong Ming-Guang,Wang Kong-Jia,

物理学报 , 2007,
Abstract: 以导电聚苯胺为空穴传输材料,制备了固态染料敏化太阳电池(DSC).利用强度调制光电流谱(IMPS)和强度调制光电压谱(IMVS)研究了TiO2多孔膜内的电子输运及复合过程.通过TiO2多孔膜内电子的平均传输时间(τd)和电子寿命(τn)及对IMPS实验数据的拟合,获得电子在TiO2膜内的有效扩散系数(Dn)和扩散长度(Ln).这些聚苯胺基电池中的τn值为相应的液体型电池的1/10倍左右,表明在该固体电池中存在严重的光生电子的复合过程,这很可能主要是与氧化态染料分子和导电电子间的复合有关.随着TiO2膜厚的增加,τn和τd均变小,但Dn和Ln随之增加,只有在合适的膜厚范围内才能获得较高的光伏性能.
Amorphous/crystalline blend effects on the performance of polymer-based photovoltaic cells

Peng Rui-Xiang,Chen Chong,Shen Wei,Wang Ming-Tai,Guo Ying,Geng Hong-Wei,

物理学报 , 2009,
Abstract: 以局域规整聚(3-己基噻吩) (P3HT)制备了TiO2/聚合物型双层结构光伏电池.利用稳态电流-电压测试和动态强度调制光电压谱,结合差热分析、吸收光谱和荧光光谱, 研究了非晶支化聚亚乙基亚胺(BPEI)作为P3HT膜层的添加成分对TiO2/P3HT双层电池性能的影响.由于P3HT链的高结晶性,使得TiO2/P3HT界面接触不好,导致电池性能差.当在P3HT中共混重量比WBPEI/P3HT=1%—5%的BPEI时,电池性能得到显著改善;尤其是当WBPEI/P3HT= 1%时,电池表现出近0.8V的开路电压和20μA/cm2的短路电流.结果表明BPEI对电池性能的影响不是源于P3HT-BPEI共混体系光学性能的变化,而主要是由于其改变了TiO2/P3HT界面接触性能.BPEI对TiO2/P3HT界面接触有两个相互竞争的影响,这取决于P3HT-BPEI共混体系的组成.一方面,通过降低P3HT的结晶度和增强与TiO2表面的相互作用,改善P3HT链在TiO2 表面的附着;另一方面,当BPEI含量过高时,BPEI在TiO2表面的附着量将增加,反而会阻碍P3HT与TiO2表面的接触.良好的TiO2/P3HT界面接触有利于提高激子的界面分离效率、光生电子的寿命和电池效率.本文结果有望为聚合物光伏电池性能的改善提供新的认识和方法.
The creativity of informative forecasting theory and it''''s significance

XU Dao-yi,WANG Ming-tai,GENG Qing-guo,WANG Wei-lin,

地球物理学进展 , 2007,
Abstract: Weng Wen-Bo,member of the Board of Chinese Academy of Sciences,suggested the Informational Forecasting Theory(IFT),characterized as a creative system either in science,or in practice.Several main creative features can be summarized as following:(1) Weng Wen-Bo suggested three types of cognitive system: Abstract system,Physical system and Informative system,in which the Informative system was suggested firstly by him;(2) A new view point to view the basic characteristics of data,particularly to indicate the significance of so-called natural number and integer in researches and forecasting of natural events;(3) A new concept "informative forecasting" differed from the "statistical forecasting" has been suggested.The real progress based on the applications of the IFT is the successful improvements in the forecasting of various kinds of natural disasters.
Perinatal Outcomes of Polyhydramnios without Associated Congenital Fetal Anomalies after a Gestational Age of 20 weeks.
Kuang-Chao Chen,Jui-Der Liou,Tai-Ho Hung,Dong-Ming Kuo
Chang Gung Medical Journal , 2005,
Abstract: Background: Polyhydramnios carries a high rate of complications during pregnancy andadverse perinatal outcomes. We could find no studies of this condition in alarge Asian population. The aim of this investigation was to evaluate therisks of adverse perinatal outcomes in a large study population with polyhydramnioswithout associated fetal anomalies after the gestational age of 20weeks in Taiwan.Methods: We retrospectively reviewed the computerized records of women who hadbabies without associated fetal anomalies after the gestational age of 20weeks at Chang Gung Memorial Hospital from July 1990 to December 2001.Possible confounding factors that could affect the occurrence of polyhydramnioswere analyzed. We then investigated the relative risks of these events toadverse perinatal outcome by adjusting the variants.Results: Significantly higher incidences of preeclampsia, placental abruption, placentaaccreta, past history of fetal death or preterm delivery, multiple pregnancy,bodyweight gain 20kg during pregnancy and primiparity were noted inpatients with polyhydramnios than in patients without this condition. Thepresence of polyhydramnios significantly increased the rate of preterm delivery,low birth weight or very low birth weight, low one- and five-minuteApgar scores, fetal death, large for gestational age babies, meconium-stainedamniotic fluid, Cesarean section, fetal distress in labor, NICU transfer andneonatal death.Conclusions: Polyhydramnios carried a higher incidence of adverse perinatal outcomes,such as low Apgar scores, fetal death, fetal distress in labor, NICU transferand neonatal death, despite exclusion of congenital anomalies from the studypopulation. Detailed antepartum fetal well-being surveillance, intensiveintrapartum monitoring and further attention postpartum are warranted inpatients with this condition.
Adenoviral-Mediated Glial Cell Line–Derived Neurotrophic Factor Gene Transfer Has a Protective Effect on Sciatic Nerve Following Constriction-Induced Spinal Cord Injury
An-Kuo Chou, Ming-Chang Yang, Hung-Pei Tsai, Chee-Yin Chai, Ming-Hong Tai, Aij-Li Kwan, Yi-Ren Hong
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0092264
Abstract: Neuropathic pain due to peripheral nerve injury may be associated with abnormal central nerve activity. Glial cell-line-derived neurotrophic factor (GDNF) can help attenuate neuropathic pain in different animal models of nerve injury. However, whether GDNF can ameliorate neuropathic pain in the spinal cord dorsal horn (SCDH) in constriction-induced peripheral nerve injury remains unknown. We investigated the therapeutic effects of adenoviral-mediated GDNF on neuropathic pain behaviors, microglial activation, pro-inflammatory cytokine expression and programmed cell death in a chronic constriction injury (CCI) nerve injury animal model. In this study, neuropathic pain was produced by CCI on the ipsilateral SCDH. Mechanical allodynia was examined with von Frey filaments and thermal sensitivity was tested using a plantar test apparatus post-operatively. Target proteins GDNF-1, GDNFRa-1, MMP2, MMP9, p38, phospho-p38, ED1, IL6, IL1β, AIF, caspase-9, cleaved caspase-9, caspase-3, cleaved caspase-3, PARP, cleaved PARP, SPECTRIN, cleaved SPECTRIN, Beclin-1, PKCσ, PKCγ, iNOS, eNOS and nNOS were detected. Microglial activity was measured by observing changes in immunoreactivity with OX-42. NeuN and TUNEL staining were used to reveal whether apoptosis was attenuated by GDNF. Results showed that administrating GDNF began to attenuate both allodynia and thermal hyperalgesia at day 7. CCI-rats were found to have lower GDNF and GDNFRa-1 expression compared to controls, and GDNF re-activated their expression. Also, GDNF significantly down-regulated CCI-induced protein expression except for MMP2, eNOS and nNOS, indicating that the protective action of GDNF might be associated with anti-inflammation and prohibition of microglia activation. Immunocytochemistry staining showed that GDNF reduced CCI-induced neuronal apoptosis. In sum, GDNF enhanced the neurotrophic effect by inhibiting microglia activation and cytokine production via p38 and PKC signaling. GDNF could be a good therapeutic tool to attenuate programmed cell death, including apoptosis and autophagy, consequent to CCI-induced peripheral nerve injury.
Risk Factors for Acute Toxoplasma gondii Diseases in Taiwan: A Population-Based Case-Control Study
Ting-Yi Chiang, Ming-Chu Kuo, Chang-Hsun Chen, Jyh-Yuan Yang, Cheng-Feng Kao, Dar-Der Ji, Chi-Tai Fang
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0090880
Abstract: Although human toxoplasmosis is a notifiable disease in Taiwan since 2007, little is known about its risk factors. This study aimed to investigate the risk factors for acute Toxoplasma gondii diseases in Taiwan. We conducted a nationwide population-based case-control study. Cases of acute human toxoplasmosis notified to the Taiwan Centers for Diseases Control (Taipei, Taiwan) during 2008–2013 were compared with controls that were randomly selected from healthy T. gondii-seronegative blood donors who participated in a nationwide T. gondii seroepidemiologic study during 2009–2010. Cases and controls were matched according to age, gender and residency at an 1:8 ratio. Structured questionnaires were used to gather information regarding risk factors. A total of 30 laboratory-confirmed acute T. gondii disease cases and 224 controls were enrolled. The most common clinical manifestation of the cases was flu-like symptoms (n = 20), followed by central nervous system disease (n = 4), ocular diseases (n = 3), abortion (n = 2), and congenital infection (n = 1). Multivariate conditional logistic regression showed that raw clam consumption (adjusted odds ratio [OR] = 3.7; 95% confidence interval [CI] = 1.4–9.9) and having a cat in the household (adjusted OR = 2.9; 95% CI = 1.1–7.9) were two independent risk factors for acute T. gondii disease. We conclude that raw shellfish consumption and domestic cat exposure were risk factors for acquiring acute T. gondii diseases in Taiwan. This finding may guide future research and control policies.
The Changes of Liver Stiffness and Its Associated Factors for Chronic Hepatitis B Patients with Entecavir Therapy
Yuan-Hung Kuo, Sheng-Nan Lu, Chien-Hung Chen, Kuo-Chin Chang, Chao-Hung Hung, Wei-Chen Tai, Ming-Chao Tsai, Po-Lin Tseng, Tsung-Hui Hu, Jing-Houng Wang
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0093160
Abstract: Liver stiffness measurement (LSM) using transient elastography has been proposed to assess liver fibrosis well in various liver diseases. This study was to determine the changes of LSM and its associated factors for chronic hepatitis B (CHB) patients undergoing Entecavir therapy. Consecutive CHB patients underwent Entecavir therapy with two LSMs were enrolled. Patients with aspartate transaminase (AST) and/or alanine transaminase ≧200 IU/L were excluded. The retrospective study enrolled 233 patients including 132 without cirrhosis (group 1) and 101 with cirrhosis (group 2). The mean values of initial liver stiffness were 7.9 and 16.6 kPa for patients in group 1 and group 2, respectively (p<0.001). In addition to the decline of transaminase levels, there was significant reduction of liver stiffness value in a mean interval of 52.8 and 61.9 weeks between the two LSMs for patients in group 1 and 2, respectively (p<0.001). Multivariate analysis showed that higher initial LSM value and presence of hepatitis B e-antigen were associated with a greater decline of LSM value, whereas follow-up AST≧40 IU/L with increased LSM value for group 1 patients. For group 2 patients, longer interval between the two LSMs, higher initial LSM value and AST≧40 IU/L were associated with a greater decline of LSM value, whereas presence of diabetes mellitus (DM) contributed to increased LSM value. In conclusion, CHB patients improved their LSM values after Entecavir therapy. Higher initial LSM value contributed to greater LSM reduction. However, in cirrhotic patients, DM was associated with an increased LSM value after therapy.
Ten-Day versus 14-Day Levofloxacin-Containing Triple Therapy for Second-Line Anti-Helicobacter pylori Eradication in Taiwan
Wei-Chen Tai,Chien-Hua Chiu,Chih-Ming Liang,Kuo-Chin Chang,Chung-Mou Kuo,Yi-Chun Chiu,Keng-Liang Wu,Ming-Luen Hu,Yeh-Pin Chou,Shue-Shian Chiou,King-Wah Chiu,Chung-Huang Kuo,Tsung-Hui Hu,Ming-Tsung Lin,Seng-Kee Chuah
Gastroenterology Research and Practice , 2013, DOI: 10.1155/2013/932478
Abstract: Second-line Helicobacter pylori (H. pylori) eradication with fluoroquinolone-containing triple therapy is one of the recommended treatment options, but neither 7-day nor 10-day regimens provide >90% success rates. The current retrospective study aimed to clarify the effects of 10-day and 14-day levofloxacin-containing triple therapies for second-line H. pylori eradication in a Taiwanese cohort and to evaluate the potential clinical factors influencing eradication. A total of 200 patients who failed H. pylori eradication using the standard triple therapy were prescribed with either a 10-day (EAL-10) or a 14-day (EAL-14) levofloxacin-containing triple therapy group (levofloxacin 500?mg once daily, amoxicillin 1?g twice daily, and esomeprazole 40?mg twice daily). Follow-up studies to assess treatment response were carried out 8 weeks later. Eradication rates attained by EAL-10 and EAL-14 were 75.6%; 95% –85.3% and 92.5%; 95% –98.1%, in the per protocol analysis and 68%; 95% –78.5% and 86%; 95% –93.4%, in the intention-to-treat analysis. The duration of H. pylori therapy is the independent risk factor of H. pylori eradication ( ). In conclusion, 14-day levofloxacin-containing triple therapy can provide a >90% H. pylori eradication rate, but 10-day treatment duration may be suboptimal. The longer duration of H. pylori therapy (14 days) is the independent risk factor. 1. Introduction Many gastrointestinal diseases, either benign or malignant, are associated with Helicobacter pylori (H. pylori) infections, including peptic ulcer diseases, gastric adenocarcinoma, and gastric mucosa-associated lymphoid tissue lymphoma (MALToma) [1–3]. The successful rate of standard first-line triple therapies using a proton pump inhibitor (PPI), clarithromycin, and either amoxicillin or metronidazole for 7 to 14 days has dropped to less than 80% in many countries especially in areas of high clarithromycin resistance [4–7]. The Maastricht IV/Florence consensus report states that the standard treatment to eradicate H. pylori infection is triple therapy; using a proton pump inhibitor (PPI), clarithromycin, and either amoxicillin or metronidazole for 7 to 14 days is recommended for first-line empirical treatment in areas of low clarithromycin resistance, while bismuth-containing quadruple therapy is also an alternative [8]. In areas of high clarithromycin resistance, bismuth-containing quadruple therapies, sequential treatment, or nonbismuth quadruple therapy is used for first-line empirical treatment. Avoiding problems due to antibiotic resistance has become an important issue
Integrated Movable System of Fuel Cell with Replaceable Fiber Bipolar Plate  [PDF]
Chang Shiuh Ming, Kuo Jenn Kun
Smart Grid and Renewable Energy (SGRE) , 2011, DOI: 10.4236/sgre.2011.24046
Abstract: It is important for the fuel cell integrated movable system to operate voltage and current using safety control technology. In order to work at the convenient condition of the fuel cell system, high performance fuel cell stack with replaceable fiber bipolar plate should be arranged with the integrated subsystem and appropriate working process. The parameters which affect the performance of PEMFC consisting of relative humidity, reaction temperature, gas inlet temperature, gas inlet pressure, and hydrogen and air flow rate. This study is to develop the integrated movable system on distributed power generation and backup power application, such as oxidant supply system, fuel supply system, heat management system, water management system, and power conditioning system. It comprises a novel PLC (Programmable Logic Control) system and human-machine interface. The controller is developed to control fuel cell system and record the operation data by using data acquisition system. The controller can be applied to high performance stack and system to obtain the best performance. The easy-taken high capacity hydrogen barrel embedded into steel plate of this movable system and more convenient than other fuel cell system.
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