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| 1 | 植物中硝酸还原酶和亚硝酸还原酶的作用显示文摘植物通过硝酸盐同化途径以硝酸盐和氨的形式吸收氮元素。硝酸盐的同化是一个受到严格控制的过程,其中两个先后参加反应的酶——硝酸还原酶(NR)和亚硝酸还原酶(NiR)对初级氮的同化起主要调控。在高等植物中,NR和NiR基因的转录及转录后加工受到各种内在和外在因素的影响,翻译后调控是消除亚硝酸盐积累的重要机制。随着分子生物学技术的发展,可以更容易地通过突变体和转基因方式来研究NR和NiR基因的调控。 | May Sandar Kyaing 顾立江 程红梅 | 2011 | 生物技术进展2011,1,3: | 68 |
| 2 | 缅甸中部抹谷早白垩世构造岩浆作用及对特提斯演化的启示显示文摘本文系统报道了缅甸抹谷变质带中部Yinmabin花岗闪长岩体及其基性岩墙的主量元素、微量元素及锆石U-Pb年龄和Lu-Hf同位素组成,重点讨论了花岗闪长岩和基性岩墙的岩石成因、物质来源及其地质意义。抹谷Yinmabin花岗闪长岩体主量元素显示富钠(N2O/K2O=1.5~1.75)、准铝(ACNK=0.94~0.97)和钙碱性岩石系列的地球化学特征。样品富集轻稀土(LREE)元素、大离子亲石元素(LILE),相对亏损高场强元素(HFSE)。岩体的主、微量元素地球化学特征均显示其具有活动陆缘I型花岗岩的地球化学属性。抹谷Yinmabin花岗闪长岩的锆石U-Pb年龄为131~135 Ma,其εHf(t)值在-15.66^-2.99之间,平均值为-8.77,单阶段模式年龄(tDM)为795~1569 Ma;而后期侵位的辉绿岩的锆石U-Pb年龄为120~118 Ma,其εHf(t)值在-13.72^+5.82之间,平均值为-2.72,单阶段模式年龄(tDM)为570~1341 Ma,表明这些岩石可能主要来源于古老下地壳部分熔融但同时也受到地幔物质的加入混染。与滇西以及北拉萨岩浆带的Lu-Hf同位素特征十分相近,暗示抹谷-毛淡棉地块早白垩世岩浆岩带与波密-察隅-高黎贡-拉萨岩浆岩带形成环境相似,可能是腾冲岩浆岩带向南延伸的一部分。结合岩石成因、源区性质和区域构造演化,认为抹谷花岗闪长岩体及基性岩墙的形成与中特提斯洋板块的俯冲作用密切相关,同时俯冲-碰撞转换的时限应该在120 Ma左右。这对于研究抹谷地体在中生代期间中特提斯洋俯冲碰撞过程具有重要的地质意义。 | 陈希节 许志琴 Kyaing Sein 孟元库 蔡志慧 | 2016 | 地质学报2016,90,11: | 7 |
| 3 | Optimization of Fractal Iterated Function System(IFS) with Probability and Fractal Image Generation显示文摘There are several methods for rendering fractal images based on IFS (Iterated Function System) in computer graphic; but one concern of the computer graphic community has been the efficiency rendering algorithms. The invariant measures arising from IFSP(It- erate Function System with Probability) using the probabilistic algorithm are also known as chaos games. The role of these probabilities to generate the image of the attractor has been investigated using a multi-fractal analysis. The conventional choice of probability associ- ated with each set fat to generate the attractor in least time possible is introduced, then a new method based on the self similarity and multi-fractal analysis is presented. The efficiency of the new method has been proved over the conventional method. | Berthe Kya, Yang Yang (Information Engineering School, University of Science and Technology Beijing, Beijing 100083, China) | 2001 | Journal of University of Science and Technology Beijing2001,8,2: | 6 |
| 4 | 缅甸Twintaung玛珥湖碳酸盐年纹层及100年来微区原位元素分析显示文摘报道了缅甸蒙育瓦地区发现的5个玛珥湖,通过对这些玛珥湖的纹层研究,发现深度最大的Twintaung玛珥湖发育了碳酸盐年纹层,纹层层偶由厚度约为50~400?m的碳酸盐微层以及厚度100~600μm的碎屑-有机质层组成,其中碳酸盐微层是鉴定年纹层的重要标志.Twintaung玛珥湖年纹层的形成与缅甸蒙育瓦地区特殊的气候环境密切相关,每年12~4月为“干-热季”,降水少、蒸发高、湖水过饱和,导致方解石微晶生成;同时,每年干旱季节也是蓝藻Spirulina的繁盛时期,藻类繁盛需要消耗大量的CO_2,也促使碳酸盐生成.5~11月为“湿-热季”,降水较多,形成碎屑、有机质混合层.独立的核素测年(137Cs,210Pb)数据与纹层计数基本一致,证明了纹层的年季特征.为了理解元素指标的气候意义,我们运用同步辐射原位分析方法获得高分辨率元素数据,并与气象观测记录对比.通过主成分分析及与气象记录的对比,认为第一主成分主要包括岩石成因的元素(K,Ti,Fe,Cu,Zn,Rb和Zr等),可能主要与物理化学风化作用、降水以及粉尘输入有关,影响因素复杂;第二主成分主要包括元素Ca和Sr,主要赋存于碳酸盐颗粒中,可能主要与蒸发-降水关联.气候干旱时期,湖水中Ca离子呈过饱和,促使碳酸盐沉淀.缅甸Twintaung玛珥湖碳酸盐年纹层沉积中Ca元素可能是高分辨率古气候变化研究的重要替代指标. | 孙青 单雅冰 SEIN Kyaing 苏有亮 朱庆增 旺罗 孙继敏 顾兆炎 储国强 | 2015 | 科学通报2015,60,11: | 5 |
| 5 | 生物技术在缅甸的研究和应用现状显示文摘Myanmar(缅甸),即以前的Burma,是一个农业国家。农业是整个国家经济的重要组成部分,其独特的气候适宜多种作物生长。缅甸主要的农业研究中心从属于农业和灌溉部(Ministry of Agriculture and Irrigation,MOAI)、科学和技术部(Ministry of Scienceand Technology,MOST)及教育部(Ministry of Education,MOE);主流的生物技术研究集中在植物种苗组培快繁、分子育种和水稻γ射线辐射育种、转基因棉花、水稻栽培种的遗传差异和生物肥料等方面。目前在生物安全、转基因食品和转基因衍生食品的管理方面,缅甸还没有相关的国家政策和指导方针。但是它可能从邻近的国家进口种子(也可能是转基因种子)。2010年,缅甸正式成为南亚和东南亚地区的第5个,同时是世界上第29个转基因作物(特别是Bt抗虫棉)商业化的国家。然而,尽管缅甸的生物技术工作已经开展了十年之久,但是训练有素的生物技术人员、当地和国际之间的交流合作和良好的科研体系仍需改善。 | May Sandar Kyaing 苏晓峰 | 2012 | 生物技术进展2012,2,3: | 2 |
| 6 | Cenozoic ultrahigh-temperature metamorphism in pelitic granulites from the Mogok metamorphic belt, Myanmar显示文摘Ultrahigh-temperature(UHT)metamorphism is critical for understanding the most extreme thermal evolution of continental crust.However,UHT metamorphism predominantly occurred in the Precambrian and is rarely observed in the modern Earth.Here,we report the discovery of~25 Ma UHT granulites from the Mogok metamorphic belt(MMB)in Myanmar via a combined study of petrology and geochronology.The studied pelitic granulites well preserve a peak mineral assemblage of garnet+sillimanite+plagioclase(antiperthite)+K-feldspar+quartz+Ti-rich biotite+rutile+ilmenite.Pressure(P)-temperature(T)pseudosections and conventional geothermobarometry data only constrain the P-T conditions of the peak stage to<12 kbar and 780–890°C.However,high Zr contents in the matrix rutile(3005–4308 ppm)and high Ti contents(up to 9.2 wt% TiO_(2))in the biotite demonstrate that the Mogok granulites may have experienced UHT metamorphism.The Zr-in-rutile thermometer and X_(Grs) isopleth in the pseudosections yield peak P-T conditions of~12 kbar and>900°C.In situ SIMS and LAICP-MS U-Pb dating and trace element analyses show that both metamorphic zircon cores and rims have flat heavy rare earth element(HREE)patterns with negative Eu anomalies.The metamorphic zircon rims show the lowest HREE contents and yield ^(206)Pb/^(238)U ages of 24.9±0.5 and 25.4±0.6 Ma,respectively,representing the timing of UHT metamorphism.Our results indicate that the central MMB underwent~25 Ma UHT metamorphism,which is possibly induced by continental rifting along the thinned orogenic lithosphere.Our data,as well as reported Cenozoic UHT events,further suggest that UHT metamorphism can be produced in the modern plate tectonic regime by lithospheric extension. | Si CHEN Yi CHEN Yibing LI Bin SU Qinghua ZHANG Me Me AUNG Kyaing SEIN | 2021 | Science China Earth Sciences2021,64,11: | 2 |
| 7 | Fractal image encoding based on adaptive search显示文摘Finding the optimal algorithm between an efficient encoding process and the rate distortion is the main research in fractal image compression theory. A new method has been proposed based on the optimization of the Least-Square Error and the orthogonal projection. A large number of domain blocks can be eliminated in order to speed-up fractal image compression. Moreover, since the rate-distortion performance of most fractal image coders is not satisfactory, an efficient bit allocation algorithm to improve the rate distortion is also proposed. The implementation and comparison have been done with the feature extraction method to prove the efficiency of the proposed method. | Kya Berthe | 2003 | Journal of University of Science and Technology Beijing2003,10,6: | 1 |
| 8 | Causes and consequences of social interaction on the internet: A conceptual framework 显示文摘 | McKenna KYA Bargh JA | 1999 | Media Psychology1999,1,: | 1 |
| 9 | LTE and beyond - the long way to 4G mobile communication显示文摘 | Othmar Kyas | 2009 | Microwave Engineering Europe2009,,: | 1 |
| 10 | Improve Fractal Compression Encoding Speed Using Feature Extraction and Self-organization Network显示文摘Image compression consists of two main parts: encoding and decoding. One of the important problems of the fractal theory is the long encoding implementation time, which hindered the acceptance of fractal image compression as a practical method. The long encoding time results from the need to perform a large number of domain-range matches, the total encoding time is the product of the number of matches and the time to perform each match. In order to improve encoding speed, a hybrid method combining features extraction and self-organization network has been provided, which is based on the feature extraction approach the comparison pixels by pixels between the feature of range blocks and domains blocks. The efficiency of the new method was been proved by | Berthe Kya, Yang Yang Information Engineering School. University of Science and Technology Beijing. Beijing 100083. China | 2001 | Journal of University of Science and Technology Beijing2001,8,4: | 1 |
| 11 | Rifampin drug resistance tests for tuberculosis: challenging the gold standard 显示文摘 | Armand Van Deun Kya JM Aung Valentin Bola | 2013 | J Clin Mierobiol2013,51,8: | 1 |
| 12 | Transient simulation to predict the kinetic behavior of hydrogelsr esponsive to electric stimulus显示文摘 | Li H Chen J Lam KYA | 2006 | Biomacromolecules2006,7,: | 1 |
| 13 | Relationship formation on the internet:What's the big attraction显示文摘 | McKenna KYA Green AS Gleason MEJ | | 0,,: | 1 |
| 14 | Relationship forma- tion on the Intemet:What's the big attraction? 显示文摘 | MCKENNA KYA GREEN AS GLEASON MEJ | 2002 | J Soc Iss2002,58,1: | 1 |
| 15 | Automatic edge and target extraction base on Pulse-Couple Neuron Networks Wavelet theory (PCNNW)显示文摘 | Kya BERTHE Yang YANG | 2002 | SPIE2002,4668,: | 1 |
| 16 | Evaluation of the virucidal performance of domestic laundry procedures 显示文摘 | Heinzel M Kyas A Weide M | 2010 | Int J Hyg Environ Health2010,213,: | 1 |
| 17 | Fusarium martgiferae associated with mango malformation in the Sultanate of Oman显示文摘 | KYAS M STEENKAMP E T A1ADAWI A O | 2008 | European Journal of Plant Pathology2008,121,2: | 1 |
| 18 | Effects of human stem cell factor (c-Kit ligand) on proliferation of myeloid leukemia ceils: heterogeneity in response and synergy with other hema- topoietie growth factors显示文摘 | Pietsch T Kyas U Steffens U | 1992 | Blood1992,80,5: | 1 |
| 19 | Plasticity and expanding complexity of the hepatic transcription factor network during liver development显示文摘 | Kya'mizi I Hatzis P Katrakili N | 2006 | Genes & Development2006,20,16: | 1 |
| 20 | Identification of (η6-arene)ruthenium(Ⅱ)protein binding sites in E-coli cells by combined muhidimensional liquid chromatography and ESI tandem mass spectrometry:specific binding of to stress-regulated proteins and to helicases显示文摘 | WILL J KYAS A SHELDRICK W S | 2007 | Journal of Biological Inorganic Chemistry2007,12,6: | 1 |