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The levels of jasmonic acid and salicylic acid in a rice-barnyardgrass coexistence system and their relation to rice allelochemicals

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The levels of jasmonic acid and salicylic acid in a rice-bar...

中国第五届植物化感作用学术研讨会

作者： YOU Li-Xin 1,WANG Peng 1,KONG Chui-Hua 2,XU Xiao-Hua 3 1 Institute of Applied Ecology,chinese academy of sciences,Shenyang 110016,china 2 College of Resources and Environmental sciences,china Agricultural university,beijing 100193,china 3 State Key Laboratory of Elemento-organic Chemistry,Nankai university,Tianjin 300071,china

Despite increasing knowledge of the jasmonic acid (JA) and salicylic acid (SA) as signaling compounds involved in the defense of rice against attacking microbes and insect predators,relatively little is known about their levels in the growth media and their interactions with other plant *** study quantified JA and SA in a rice-barnyardgrass coexistence system followed by correlation analysis to access rice *** rice and barnyardgrass biosynthesized JA and SA,but their contents varied greatly with species,tissue source and *** was a positive correlation in the contents between rice allelochemicals and JA in roots or SA in *** JA was exuded from roots eliciting the production of rice *** was not detected in growth media as an exogenous signaling compound in a rice-barnyardgrass coexistence system,but SA content in rice shoots was an indicator for distinguishing the allelopathic rice traits from the non-allelopathic ***,JA may be an integral part of a general signal transduction system regulating rice-barnyardgrass allelopathic interactions mediated by *** study provided the first data linking the levels of endogenous SA to the allelopathic suppression and allelochemicals among rice varieties.

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热处理对煤焦反应性及微观结构的影响

燃料化学学报 2004年第6期32卷 673-678页

作者：张守玉吕俊复王文选朱廷钰黎永岳光溪清华大学热能工程系热能工程研究所中国科学院过程工程研究所北京100080

用热天平和XRD考察了热处理对二种煤(河北蔚县褐煤、四川湔江烟煤)镜质组半焦微观结构和反应活性的影响。TGA结果表明,热处理温度增加,蔚县煤镜质组(YXV)与湔江煤镜质组(JJV)焦炭的反应性降低;YXV焦炭的反应性随着热处理时间的增加而急... 详细信息

用热天平和XRD考察了热处理对二种煤(河北蔚县褐煤、四川湔江烟煤)镜质组半焦微观结构和反应活性的影响。TGA结果表明,热处理温度增加,蔚县煤镜质组(YXV)与湔江煤镜质组(JJV)焦炭的反应性降低;YXV焦炭的反应性随着热处理时间的增加而急剧下降,但一定热处理时间(60min)后,其下降趋势变缓;热处理时间对JJV焦炭的影响较小。XRD结果表明,在热处理温度为900℃,初焦热处理时间为60min时,YXV焦炭晶格结构发生明显改变,900℃以上,YXV焦炭芳香堆垛高度Lc随着热处理时间的增加而增加;热处理时间对JJV焦炭的影响不如YXV显著,而只有在较高的热处理温度(1200℃)下,碳的微观结构才出现明显的有序化。热处理导致的焦炭微观碳结构趋于有序化是焦炭反应性下降的主要原因。

关键词：煤焦反应活性微观结构热处理

Temperature Anomalies in Central and Eastern Tibetan Plateau in Relation to General Circulation Patterns

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Increased plasma melatonin level and mtDNA copy number and decreased mtDNA damage as biomarkers for greater opiates abstinence

作者： Yin Zhiyong,Lin Zhengyao and Zhao Xinyi Dept. of Anthropology and Geography,Georgia State university,Atlanta,GA 30303,USA Institute of Geography,chinese academy of sciences,beijing 100101,P. R. china, Dept. of Urban and Environmental Science,Peking university,beijing 100871,P. R. china

Temperature anomalies at 44 stations with fairly complete records from 1961-1987were analyzed with principal component analysis,producing three major subregions in the centraland eastern Tibet *** first region covers the southeastern part of the Tibet *** second subregion covers mostly Qinghai Province,while the third subregon coverswestern Sichuan *** data during 1951-1993 for 77 stations were used toconstruct temperature anomaly records for those three *** correlation field analysisbetween subregional temperature anomalies and 500 hPa geopotential height anomalies,we foundthat each region responded differently to the pressure height anomaly ***,different patterns were identified during cold(October-Marh)and warm(April-September)*** analysis suggests that different teleconnections representing the midtroposphericcirculation patterns in the Northern Hemisphere can be considered as the causes of temperatureanomalies of these subregions.

关键词： temperature anomaly,circulation pattern,geopotential height,Tibetan Plateau

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Increased plasma melatonin level and mtDNA copy number and d...

CHEMICAL　INCORPORATING　INSECTICIDES　***　OF　NEWPYRETHROIDS　WITH　ORGANOPHOSPHATE　AS　POTENTIAL　INSECTICIDES

“细胞活动生命活力”——中国细胞生物学学会全体会员代表大会暨第十二次学术大会

作者： Yue-mei Feng~(1,3),Ling-Yan Su~(1,3),De-Xiang Li~2,Yi-Ping Zhang~2,Yong-Gang Yao~1 1.Key Laboratory of Animal Models and Human Disease Mechanisms of the chinese academy of sciences & Yunnan Province,Kunming Institute of Zoology,Kunming,Yunnan 650223,china 2.Yunnan Police Officer academy,Kunming,Yunnan 650223,china 3.graduate School of the chinese academy of sciences,beijing 100039,china

Drug addiction is a very serious social problem and continues to cause enormous financial costs on society. The available treatments remain to be inadequate for the drug abusers and addiction relapse rates vary depending on the substance being ***,an improved understanding of the biological change during the process of drug abstinence will lead to more effective treatment and eventually to improve the recovery of drug *** studies have demonstrated that the endocrine and metabolism systems were actively involved in this *** is the main secretory product of the pineal gland which is known to affect drug *** also functions as a powerful antioxidant to protect mitochondria and mtDNA from the oxidative damage caused by reactive oxygen species in the central nervous *** hypothesized that the change of plasma melatonin level and alteration of mtDNA in peripheral blood could be used as biomarkers for better drug *** this study,we detected the plasma melatonin level and mtDNA copy number change and damage in 13 opiate dependent females who received drug detoxification at 0,3 and 6 *** overall pattern in the drug abusers during abstinence was compared to that of 17 matched normal *** opiate abusers had a mean age of 31.7±2.4 years and were recruited from the Kunming Compulsory Drug Detoxification *** control group had a mean age of 30±1.7 years and had no history of medical,neurological or psychiatric *** melatonin level was quantified by enzyme-linked immunosorbent assay(ELISA).Quantitative real-time PCR was used to detect mtDNA copy number change and *** melatonin level,mtDNA copy number and mtDNA damage between the normal controls and drug abusers undergoing abstinence at different time points were compared by unpaired t *** also examined the time-dependent change of plasma melatonin level, mtDNA copy number change and damage in these drug abusers during drug abst

关键词： drug addiction melatonin mtDNA copy number mtDNA damage

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chinese Chemical Letters 1995年第9期6卷 755-758页

作者： Er Le ZANG Shi Yang XU Ping LI(Department of Applied Chemistry, beijing Agricultural university, beijing 100094) beijing Agr Univ Dept Appl Chem Beijing 100094 Peoples R China

Abstract: Several potential insecticides were synthesized by incorporating chrysanthemic acid and O,O-dialkyl phosphorodithioate through a pyrrolongdine-2,5-dione group. Their structures were determined by elementary ... 详细信息

关键词： AS ORGANOPHOSPHATE POTENTIAL WITH NEWPYRETHROIDS OF INCORPORATING CHEMICAL

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MOND理论和暗物质模型的检验

天文学报 2003年第4期44卷 375-381页

作者：张杨赵文韩金林中国科学技术大学天体物理中心合肥230026 中国科学院国家天文台北京100012

从理论上探讨在地球引力系统内,修正动力学的引力理论以及暗物质模型的预言.着重研究修正动力学(MOND)的引力理论中一些常用的模型,对其中一个最简单模型,给出了球对称情况下引力势的一般表达式,计算了地球引力场中这些模型预言的卫星... 详细信息

从理论上探讨在地球引力系统内,修正动力学的引力理论以及暗物质模型的预言.着重研究修正动力学(MOND)的引力理论中一些常用的模型,对其中一个最简单模型,给出了球对称情况下引力势的一般表达式,计算了地球引力场中这些模型预言的卫星角速度,发现不同模型给出的角速度是不相同的,并且将这些值分别与牛顿理论的角速度值相比较.虽然这些模型的角速度与牛顿理论角速度的差异都很小,但简单模型的差异更大一些.对于月球作为卫星的情况,目前的技术有可能对这个角速度差进行实际观测.最后估算暗物质模型中月球绕地球运动角速度所受到的影响,证明它远远小于MOND理论的效应.由此对这个角速度差的观测,就构成检验MOND理论与暗物质模型的一个判据.

关键词： MOND理论暗物质模型修正动力学角速度差

UNUSUAL FORMATION OF ORGANO-NEODYMIUM AND -SAMARIUM CATIOHS AND X-RAY STRUCTURE OF [(MeOCH_2CH_2C_5H_4 ) _2Sm(thf) ] [Co (CO)_ 4]

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chinese Chemical Letters 1994年第4期5卷 345-348页

作者： Dao Li DENG Xiao Fan CHENG Chang Tao QIAN(Laboratory of Organometallia Chemistry, shanghai Instituteof orgauio Chemistry, chinese academy of sciences, 345 Lingling Lu, shanghai 200032)Xiang Lin JIN(Department of Chemistry, Peking university. beijing 100

The [CP' 2Ln (thf) ] + cation (CP' = MeOCH2CH2C5H4, Ln =Nd 1, Sm 2) has been synthesized by the reaction of Cp'2LnI with KCo (CO) 4. A single-crystal X-ray diffraction study shows that the heterobimetallic complex 2 e... 详细信息

关键词： CH MeOCH2CH2C5H4 thf STRUCTURE Sm AND CO

Air-sea heat flux exchange over the South china Sea under different weather conditions before and after southwest monsoon onset in 2000

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Acta Oceanologica Sinica 2003年第3期22卷 369-383页

作者： Junyue Yan, Huadong Yao, Jianglong Li, Zhiyi Tang, Guorong Jiang, Wenyu Sha, Xunqiang Li, Yiguo Xiao National Climate Center, beijing 100081, china. E-mail: yanjy@cma.gov.cnPLA university of Science Technology, Nanjing 211101, china Natl Climate Ctr Beijing 100081 Peoples R China PLA Univ Sci Technol Nanjing 211101 Peoples R China

With the data observed from the Second SCS Air-Sea Flux Experiment on the Xisha air-sea flux research tower, the radiation budget, latent, sensible heat fluxes and net oceanic heat budgets were caculated before and after summer monsoon onset. It is discovered that, after summer monsoon onset, there are considerable changes in air-sea fluxes, especially in latent heat fluxes and net oceanic heat budget. Furthermore, the analyzed results of five synoptic stages are compared. And the characteristics of the flux transfer during different stages around onset of South china Sea monsoon are discussed. The flux change shows that there is an oceanic heat accumulating process during the pre-onset and the break period, as same as oceanic heat losing process during the onset period. Moreover, latent fluxes, the water vapor moving to the continent, even the rainfall appearance in chinese Mainland also can be influenced by southwester. Comparing Xisha fluxes with those obtained from the Indian Ocean and the western Pacific Ocean, their differences may be observed. It is the reason why SSTs can keep stable over the South china Sea while they decrease quickly over the Arabian Sea and the Bay of Bengal after monsoon onset.

关键词： South china Sea air-sea heat fluxes South china Sea monsoon

Using OCT image to distinguish human acupoint from non-acupoint tissues after irradiation with laser in vivo:a pilot study

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chinese Optics Letters 2010年第4期8卷 418-420页

作者：钟会清张祖德郭周义魏华江杨洪钦何永红谢树森刘颂豪 Key Laboratory of Laser Life Science of Ministry of Education of china South china Normal university Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education of china Fujian Normal university graduate School at Shenzhen Tsinghua university

Using the optical coherence tomography（OCT） images,the optical attenuation coefficients（μ_t） of human Laogong acupoint and non-acupoint tissues are measured after empty irradiation and 808-nm 100-mW irradiation for 10 min in vivo *** results show that there is no significant difference ofμ_t of Laogong acupoint and non-acupoint tissues after empty ***,there are significant differences ofμ_t between Laogong acupoint and non-acupoint tissues after laser irradiation at the power of 100 mW（statistical definition of probability p0.01）.The results of the pilot study indicate that the OCT could distinguish the acupoint from the surrounding tissues after irradiation with laser in vivo non-invasively.

关键词： Coherent light Electromagnetic wave attenuation Histology Irradiation Probability density function Radiation Tissue Tomography