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Comparative Effects of Salt Stress and Extreme pH Stress Combined on Glycinebetaine Accumulation,Photosynthetic Abilities and Growth characters of Two Rice Genotypes

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Rice science 2009年第4期16卷 274-282页

作者： Suriyan cha-UM Kanyaratt SUPAIBULWATTANA chalermpol KIRDMANEE National Center for Genetic Engineering and Biotechnology National Science and Technology Development Agency113 Thailand Science ParkPaholyothin RoadKlong 1Klong LuangPathumthani 12120Thailand Department of Biotechnology Faculty of ScienceMahidol UniversityBangkok 10400Thailand

Glycinebetaine （Glybet） accumulation, photosynthetic efficiency and growth performance in indica rice cultivated under salt stress and extreme pH stress were investigated. Betaine aldehyde dehydrogenase （BADH） activity and Glybet accumulation in the seedlings of salt-tolerant and salt-sensitive rice varieties grown under saline and acidic conditions peaked after treatment for 72 h and 96 h, respectively, and were higher than those grown under neutral pH and alkaline salt stress. A positive correlation was found between BADH activity and Glybet content in both salt-tolerant （P=0.71） and salt-sensitive （P=0.86） genotypes. The chlorophyll a, chlorophyll b, total chlorophyll and total carotenoids contents in the stressed seedlings significantly decreased under both acidic and alkaline stresses, especially in the salt-sensitive genotype. Similarly, the maximum quantum yield of PSII （Fv/Fm）, photon yield of PSII （ФPSII）, non-photochemical quenching （NPQ） and net photosynthetic rate （Pn） in the stressed seedlings were inhibited, leading to overall growth reduction. The positive correlations between chlorophyll a content and Fv/Fm, total chlorophyll content and ФPSII, and Pn as well as Pn and leaf area in both salt-tolerant and salt-sensitive genotypes were found. Saline acidic and saline alkaline soils may play a key role affecting vegetative growth prior to the reproductive stage in rice plants.

关键词： rice betaine aldehyde dehydrogenase glycinebetaine accumulation photosynthetic ability chlorophyll a fluorescence pigment saline acidic soil saline alkaline soil pH stress

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Case of cannabinoid hyperemesis syndrome with long-term follow-up

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World Journal of Clinical Cases 2014年第12期2卷 930-933页

作者： Jae Myung cha Richard A Kozarek Otto S Lin Gastroenterology Division Department of Internal Medicine Kyung Hee University Hospital at Gang Dong Kyung Hee University School of Medicine Seoul 134-727 South Korea Digestive Disease Institute Virginia Mason Medical Center Seattle WA 98101 United States

Long-term cannabis use may be associated with attacks of severe nausea and vomiting, and a characteristic learned behavior of compulsive hot bathing, termed cannabinoid hyperemesis syndrome(CHS). Long-term follow-up and prognosis of CHS have not been reported previously. A 44-year-old Caucasian man with a long history of addiction to marijuana presented with chronic abdominal pain complicated by attacks of uncontrollable vomiting for 16 years. He had a compulsion to take scalding hot showers, as many as 15 times a day, to relieve his symptoms. All previous therapies had been ineffective. However, abstinence from marijuana led to rapid and complete resolution of all symptoms and his compulsive hot showering behavior. He has been followed for nine years, and is still doing well without recurrence of symptoms. Physicians should have a high index of suspicion for this under-recognized condition, as excellent long-term prognosis of CHS can be achieved when abstinence is maintained.

关键词： Cannabinoids Hyperemesis Prognosis Abdominal pain Adverse drug effect

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螺旋式脉冲爆震发动机实验研究

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实验流体力学 2012年第2期26卷 12-16,22页

作者：王玮邱华范玮熊姹严传俊西北工业大学动力与能源学院西安710072

目前以碳氢燃料与空气可爆混合物的直管爆震室存在较长的爆燃向爆震转变(Deflagration to Detonation Transition,简称'DDT')距离,从而导致发动机整机长度过长等问题。为解决此问题,采用8种螺旋构型的爆震管替代现有国内外普遍研究的直... 详细信息

目前以碳氢燃料与空气可爆混合物的直管爆震室存在较长的爆燃向爆震转变(Deflagration to Detonation Transition,简称'DDT')距离,从而导致发动机整机长度过长等问题。为解决此问题,采用8种螺旋构型的爆震管替代现有国内外普遍研究的直管构型的爆震管进行了一系列实验。首先对不同螺旋结构的爆震管进行冷态流阻特性实验,得出了螺旋结构参数和流阻的关系;再结合冷态实验结果,选取4种螺旋结构进行了热态爆震实验。实验结果表明,所有螺旋结构均可获得充分发展的爆震波;螺旋爆震管缓燃向爆震转变时间随螺旋中轴线曲率半径增加而减小;相对于长2.0m的直管爆震管,螺旋爆震管DDT时间缩短了0.415～0.589ms,DDT距离沿螺旋线方向缩短了0.35m,爆震管轴向长度缩短了0.78～1.28m。

关键词：脉冲爆震螺旋爆震管 DDT 实验

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The electronic structures,magnetism and metastable states of DNA

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Chinese Science Bulletin 2006年第14期51卷 1666-1672页

作者： WANG Yongjuan LI Hua DONG Jianmin ZHANG cha'ngwen PAN Fengchun School of Physics and Microelectronics Shandong University Jinan250100 China

The electronic density of states, spin- splittings and atomic magnetic moments of the six- member ring N2C4 cluster with folding configuration in DNA bases have been studied by spin-polarized MS-Xα method. The results showed that there are at least four metastable states near the ground state level ?7.01635×103 eV. Those metastable states found in the calculation are at the levels ?7.01626× 103, ?7.01616×103, ?7.01606×103 and ?7.01597×103 eV, respectively. The electronic structures of those states were found to differ from each other. Therefore, they have different characteristics. The cluster exhib-its metal properties and has a weak antiferromag-netism in the ground state, while it shows ferrimag-netism and half-metal properties in the first metasta-ble state. The distribution of the electronic density of states of the six-member ring N2C4 cluster is very similar to that of some diluted magnetic semicon-ductors near the Fermi surface.

关键词： DNA 电子结构自旋极化磁性半金属亚稳态

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The effect of α-helix comformation on interaction between model oligopeptides and polymers

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Chinese Science Bulletin 2008年第3期53卷 473-476页

作者： LI JiHong DANG QinQin SUN Hongwei cha RuiTao YUAN Zhi College of Chemistry Nankai University Tianjin 300071 China College of Basic Medical Science Tianjin Medical University Tianjin 300070 China College of Material Science and Chemical Engineering Tianjin University of Science and Technology Tianjin 300457 China

The study of interactions between peptides and synthetic polymers has aroused considerable interest *** the present paper,the interaction mechanism between adsorbent DMAPAM and two pep-tides,VVRGCTWW(V8)and CTWW(C4),was investigated at molecular level by NMR and molecular *** results demonstrated that the conformation of oligopeptides played a vital role in their adsorption capacity on the *** interactions could incorporate with each other between V8 and DMAPAM because there was a hydrophobic cleavage in α-helix conformation of *** the ad-sorption capacity of DMAPAM to V8 was *** was significant to explore the interaction mecha-nism between peptides and biomaterials.

关键词：低聚缩氨酸分子构造聚合物交互作用机制

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Feeding Broodstocks Different Starfish Diets Affect Growth and Survival of Larvae of Trumpet Shell(charonia lampas sauliae Reeve 1844)

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Journal of Ocean University of China 2016年第5期15卷 861-865页

作者： KANG Kyoungho KIM Malhee HONG Hyeran cha Guyong SUI Zhenghong Division of Aqua Life Science Chonnam National University College of Marine Life Sciences Ocean University of China

Trumpet shell(charonia lampas sauliae)(Mollusca, Heterogastropoda, Cymatidae) has extensive economic value. Studies on the artificial larval development of C. lampas sauliae for aquaculture utilization have become especially important due to the finite natural resources. In the present study, the growth and survival rate of the larvae of C. lampas sauliae broodstocks fed three types of starfish diets, Asterina pectinifera Müller & Troschel 1842, A. amurensis Lütken 1871 and their mixture were compared. The larval size increased gradually between day 10 and day 20 after hatching at 15℃ and 20℃. No difference was found in body size and specific growth rate(SGR)(two-way ANOVA; P > 0.05). However, during transition from trochophore to veliger stage 20 days after hatching, significant increases in larval survival and growth rates were observed. The maximum survival rate was observed on day 10. The mean survival rate was 0.463, 0.730 and 0.515 at 15℃, and 0.369, 0.713 and 0.444 at 20 when ℃ A. pectinifera, A. amurensis and their mixture were fed, respectively. The SGR and survival rate of the larvae were definitely influenced by the diets(P < 0.05), and the effect of A. amurensis alone was higher than that of A. pectinifera alone and their mixture.

关键词： larvae Mollusca aquaculture definitely alone length capsules seawater cilia filtered

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Analysis of Differences in Electrochemical Performance Between Coin and Pouch Cells for Lithium-Ion Battery Applications

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Energy & Environmental Materials 2024年第3期7卷 59-63页

作者： Yeonguk Son Hyungyeon cha Taeyong Lee Yujin Kim Adam Boies Jaephil Cho Michael De Volder Department of Engineering University of Cambridge17 Charles Babbage RoadCB30FSCambridge UK Department of Chemical Engineering Changwon National UniversityChangwon Gyeongsangnam-do 51140Korea Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST) Ulsan 44919Korea

Small coin cell batteries are predominantly used for testing lithium-ion batteries(LIBs)in academia because they require small amounts of material and are easy to ***,insufficient attention is given to difference in cell performance that arises from the differences in format between coin cells used by academic researchers and pouch or cylindrical cells which are used in *** this article,we compare coin cells and pouch cells of different size with exactly the same electrode materials,electrolyte,and electrochemical *** show the battery impedance changes substantially depending on the cell format using techniques including Electrochemical Impedance Spectroscopy(EIS)and Galvanostatic Intermittent Titration Technique(GITT).Using full cell NCA-graphite LIBs,we demonstrate that this difference in impedance has important knock-on effects on the battery rate performance due to ohmic polarization and the battery life time due to Li metal plating on the *** hope this work will help researchers getting a better idea of how small coin cell formats impact the cell performance and help predicting improvements that can be achieved by implementing larger cell formats.

关键词： coin cell full cell lithium-ion batteries pouch cell

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CONNECTING THE DOTS OF A NEW WORLD LANDSCAPE--Interview with Thai Prime Minister Prayut chan-o-cha

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China Report ASEAN 2019年第9期4卷 34-37页

作者： Wang Fengjuan Shi guang 不详

On June 11, Chinese Premier Li Keqiang sent a telegram to Prayut chan-o-cha to congratulate him on re-election as prime minister of the Kingdom of Thailand. In his congratulatory message, Li expressed belief that he would continue to lead the Thai people to improve the country.“China and Thailand are close neighbors and enjoy friendly relations,” Li remarked.“Cooperation between the two countries on jointly building the Belt and Road has been fruitful. I am ready to work with you to improve the China-Thailand traditional friendship, deepen comprehensive strategic cooperation and generate more benefits to the two peoples.”

关键词： Li Keqiang building peoples

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3.3 kV 4H-SiC DMOSFET with a source-contacted dummy gate for high-frequency applications

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Journal of Semiconductors 2021年第6期42卷 41-47页

作者： Kyuhyun cha Kwangsoo Kim Department of Electronic Engineering Sogang UniversitySeoul 04107Korea

In this paper,a 4 H-Si C DMOSFET with a source-contacted dummy gate(DG-MOSFET)is proposed and analyzed through Sentaurus TCAD and PSIM *** source-contacted MOS structure forms fewer depletion regions than the PN ***,the overlapping region between the gate and the drain can be significantly reduced while limiting RON *** a result,the DG-MOSFET offers an improved high-frequency figure of merit(HF-FOM)over the conventional DMOSFET(C-MOSFET)and central-implant MOSFET(CI-MOSFET).The HF-FOM(RON×QGD)of the DG-MOSFET was improved by59.2%and 22.2%compared with those of the C-MOSFET and CI-MOSFET,*** a double-pulse test,the DG-MOSFET could save total power losses of 53.4%and 5.51%,***,in a power circuit simulation,the switching power loss was reduced by 61.9%and 12.7%in a buck converter and 61%and 9.6%in a boost converter.

关键词： 4H-Si C MOSFET dummy-gate gate-drain charge switching loss

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Iron Toxicity Tolerance of Rice Genotypes in Relation to Growth,Yield and Physiochemical characters

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Rice science 2023年第4期30卷 321-334,I0013-I0023页

作者： Sheikh Faruk AHMED Hayat ULLAH May Zun AUNG Rujira TISARUM Suriyan cha-UM Avishek DATTA Agricultural Systems and Engineering Department of FoodAgriculture and BioresourcesSchool of EnvironmentResources and DevelopmentAsian Institute of TechnologyKlong LuangPathum Thani 12120Thailand National Center for Genetic Engineering and Biotechnology National Science and Technology Development AgencyKlong LuangPathum Thani 12120Thailand

Iron(Fe)toxicity,generated from excess reduced ferrous Fe(Fe^(2+))ion formation within the soil under submerged condition,is a potent environmental stress that limits lowland rice *** 11 diverse Thai rice genotypes,including a recognized tolerant genotype Azucena and a susceptible genotype IR64,were evaluated against 5 Fe^(2+)levels[0(control),150,300,600 and 900 mg/L]to screen the tested genotypes for their Fe-toxicity tolerance and to classify them as a sensitive/tolerant *** evaluation was conducted by a germination study,followed by a polyhouse study on growth,yield and physiochemical *** showed significant variations in Fe^(2+)-tolerance across *** Fe^(2+)level beyond 300 mg/L was detrimental for germination and growth of all the tested genotypes,although germination responses were negatively affected at Fe^(2+)≥300 mg/*** responses in the form of leaf greenness,net photosynthetic rate,membrane stability index and Fe contents in leaf and root were the most representative of Fe^(2+)-toxicity-mediated impairments on overall growth and *** in physiochemical responses was effectively correlated with the contrasting ability of the genotypes on lowering excess Fe^(2+)in *** of average tolerance and stress tolerance index unveiled that the genotypes RD85 and RD31 were the closest to the tolerant check Azucena and the sensitive check IR64,*** unweighted pair group method with arithmetic means clustering revealed three major clusters,with cluster Ⅱ(four genotypes)being Fe^(2+)tolerant and cluster Ⅰ(four genotypes)being Fe^(2+)*** component(PC)analysis and genotype by trait-biplot analysis showed that the first two components explained 90.5%of the total variation,with PC1 accounting for 56.6%and PC2 for 33.9%of the total *** identified tolerant rice genotypes show potentials for cultivation in Fe^(2+)-toxic lowlands for increased productiv

关键词： iron toxicity Oryza sativa L. submerged soil principal component analysis stress tolerance index

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