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Current Zoology 2011年第2期57卷 225-236页

作者： Gail L. PATRICELLI Alan H. KRAKAUER Richard MCELREATH Department of Evolution and Ecology University of California Davis CA 95616 USA Department of Anthropology University of California Davis CA 95616 USA

Economists study negotiation as a series of events--partner choice, information gathering, bargaining, etc.--with each step of the process affecting the outcome of the next, and the optimal decision at each stage depending on the player＇s bargaining power. The context in which these negotiations occur--the market--is critical, since players can adjust their behaviors in response to outside offers. Animals similarly are faced with sequential decisions regarding courtship： who to court, how to approach a potential mate, at what level to display, when to give up, etc. Thus economic models of negotiation in a market provide a framework in which we can view not just the outcome of courtship （assortative mating）, but also the process, where each sex can use tactics to improve their negotiating outcome, using the assets that they have available. Here we propose to use negotiation as a conceptual framework to explore the factors promoting tactical adjustments during sequential stages of courtship in lekking species. Our goal is to discuss the utility of negotiation as a heuristic tool, as well as the promise and peril of co-opting game theoretic models from economics to understand animal interactions. We will provide a brief overview of a few areas where we see promise for using negotiation as a framework to understand animal courtship dynamics： choice of a display territory, tactical partner choice for negotiation, approaching a potential partner and courtship haggling .

关键词： Bargaining Game theory lek Sexual selection Signaling Negotiation

Geology, Geochronology, and Hf Isotopic Composition of the Pha lek Fe Deposit, Northern Laos: Implications for Early Permian Subduction-Related Skarn Fe Mineralization in the Truong Son Belt

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Journal of Earth Science 2019年第1期30卷 109-120页

作者： Lin Hou Shusheng Liu Linnan Guo Fuhao Xiong Chao Li Meifeng Shi Qiming Zhang Siwei Xu Songyang Wu Chengdu Center China Geological Survey Key Laboratory of Tectonic Controls on Mineralization and Hydrocarbon Accumulation of Ministry of Land and Resources Chengdu University of Technology National Research Center of Geoanalysis Chinese Academy of Geological Science China University of Geosciences

The Truong Son metallogenic belt in central Laos and Vietnam is an important Fe-Cu-Sn-Au polymetallic ore district. The Pha lek Fe deposit is closely related to Late Carboniferous– Early Permian I-type granitic magmatism, and contains >50 Mt @ 45% to 50% of Fe ore. Ore minerals occur mainly as magnetite and hematite in the skarn alteration zone between a granitic pluton and metamorphosed Middle–Upper Devonian carbonates. The granitic pluton comprises granodiorite and granite, with zircon U-Pb dating indicating synchronous emplacement at 288.2±1.3 and 284.9±1.2 Ma, respectively. Zircons from these granitoids have ε_(Hf)(t) values of 2.9–11.2 and relatively young TDM2 ages(lek granitic magmatism. A Late Carboniferous–Early Permian subduction-related skarn-type Fe mineralization model is proposed for the Pha lek deposit. More evidence is needed to verify a hypothesis of volcanic overprinting during Late Triassic post-collisional extension.

关键词： Truong Son belt Pha lek Fe deposit granitic intrusions geochronology Hf isotopic composition.

观察电针对牛乳性发热的抑制作用及其中枢cAMP和lek含量变化

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中国病理生理杂志 1989年第6期5卷 339-343页

作者：赵锡庚侯灿南京铁道医学院病理生理学教研室中山医科大学病理生理学教研室

以0.6ml/kg消毒牛乳静脉注射诱导家兔发热后电针百会穴,可使最大发热高度(△T)及体温反应指数(FRI)比对照组减小,体温较快恢复正常。用放免法测定家兔发热前、发热2小时和3.5小时内的脑脊液环磷酸腺苷(cAMP)和亮氨酸脑啡肽(lek)含量,发... 详细信息

以0.6ml/kg消毒牛乳静脉注射诱导家兔发热后电针百会穴,可使最大发热高度(△T)及体温反应指数(FRI)比对照组减小,体温较快恢复正常。用放免法测定家兔发热前、发热2小时和3.5小时内的脑脊液环磷酸腺苷(cAMP)和亮氨酸脑啡肽(lek)含量,发现发热时中枢cAMP含量明显增高,而lek含量在2小时增高,3.5小时则下降到正常,电针使体温降低的同时,出现中枢cAMP含量明显下降,而lek含量明显升高,提示电针抑制发热可能与这些中枢生物活性物质含量改变有关。

关键词：发热腺苷环一磷酸脑啡肽亮氨酸电针治疗 cAMP lek

用HPLC分析脑梗塞病人脑脊液中lek和一个未知组分

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中国神经精神疾病杂志 1991年第1期17卷 1-4页

作者：周萌刘道宽吴永麟何成潘小平王德岭上海医大神经病学研究所上海医大化学教研室

本实验建立了HPLC配备荧光检测器(FD)梯度洗脱、检测CSF中丹磺酰亮氨酸脑啡肽(DNS-lek)的方法。在测定lek的同时,从CSF中发现一个响应值高、保留时间恒定的与脑梗塞有关的未知组分(unknown fraction,Fu),并对它进行了分离纯化和初步的... 详细信息

本实验建立了HPLC配备荧光检测器(FD)梯度洗脱、检测CSF中丹磺酰亮氨酸脑啡肽(DNS-lek)的方法。在测定lek的同时,从CSF中发现一个响应值高、保留时间恒定的与脑梗塞有关的未知组分(unknown fraction,Fu),并对它进行了分离纯化和初步的化学鉴定。发现脑梗塞病人CSF中lek的含量(128.67±42.76ng/ml)明显高于对照值(78.25±16.09 ng/ml),(Plek含量增高,而Fu则减少,两者在缺血发作中起何作用,都是有待继续研究的问题。

关键词：脑栓塞 HPLC lek 脑脊液

106例帕金森病长期多巴治疗的随访与美多巴治疗前后CSF中HVA和lek的变化

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中国神经精神疾病杂志 1990年第4期16卷 223-227页

作者：黄学明刘道宽上海医科大学华山医院神经内科

106例多巴治疗的原发性帕金森病患者分为三组,发现它们的病情严重程度随着治疗前病程的延长而增加,当疗程不同而病程相同时,三组之间病情严重程度无明显差别。说明病情严重程度的决定因素是病程而不是疗程。疗效减退与起病和开始治疗年... 详细信息

106例多巴治疗的原发性帕金森病患者分为三组,发现它们的病情严重程度随着治疗前病程的延长而增加,当疗程不同而病程相同时,三组之间病情严重程度无明显差别。说明病情严重程度的决定因素是病程而不是疗程。疗效减退与起病和开始治疗年龄、治疗前病程、治疗前症状的严重程度、治疗剂量以及总病程均无明显关系,主要与疗程有关。异常不自主运动多发生在起病及开始治疗年龄较轻者,与治疗前病程,治疗前症状的严重程度及治疗剂量无明显关系。腰区CSF中HVA的含量在多巴治疗前明显降低,治疗后明显增高。lek的含量在治疗前明显增高。头颅MRI检查未发现特殊改变。对上述诸问题发生的可能机理进行了讨论。

关键词：帕金森病多巴美多巴 HVA lek

不同麻醉诱导期血浆β-内啡肽(β-EP)、亮啡肽(lek)和去甲肾上腺素(NE)含量的变化

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针刺研究 1991年第Z1期 280-281页

作者：奚桂芳丁秀娟李丽卿睢久红陈永荣江澄川陈商群上海市针灸经络研究所上海华山医院上海200030 上海华山医院上海大华医院

本文分析针麻(AA)39例、全麻(GA)11例和硬膜外麻醉(PA)13例,AA 诱导20分钟前后及GA和PA用药前同用药20分钟后血浆中刀一EP、lek和NE含量的变化。AA诱导期血浆声EP和lek含量增加(变化值:

关键词： EOP lek 血浆诱导期含量变化 NE EP

计算机(PC-1500)在lek放射免疫分析中的应用

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空军军医大学学报 1984年第2期 148-151页

作者：王正洪刘彩云第四军医大学数理教研室第四军医大学生理教研室

作者在PC—1500(日本SHARP公司出品)计算机上用BASIC语言,将亮脑啡肽(lek)射放免疫分析中的结果处理,编成程序,绘制标准曲线,打印出各种样品管的lek含量,并将实验结果作统计学分析,绘制出直方图。本工作表明,这种计算机不仅在lek放射免... 详细信息

作者在PC—1500(日本SHARP公司出品)计算机上用BASIC语言,将亮脑啡肽(lek)射放免疫分析中的结果处理,编成程序,绘制标准曲线,打印出各种样品管的lek含量,并将实验结果作统计学分析,绘制出直方图。本工作表明,这种计算机不仅在lek放射免疫分析中能提高工作效率,在其它医学科研中也可发挥一定作用。

关键词：放射免疫分析 PC-1500 标准曲线放射免疫测定放射性同位素诊断 lek 计算机

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lek型电除尘器开发介绍

LEK型电除尘器开发介绍

Do males choose their mates in the lekking moth Achroia grisella？ Influence of female body mass and male reproductive status on male mate choice

第十一届全国电除尘学术会议

作者：宋锐凯迪蓝天科技有限公司

本文介绍了以 LURGI、EE 技术为基础、博采众家之长整合开发成功的 lek 型电除尘器,文中简要介绍了 LURGI、EE 技术各自的特点,重点描述了 lek 型电除尘器的特点和优势,lek 型电除尘器已在300MW 火电机组上成功应用。

关键词：电除尘器 lek 开发整合

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Insect Science 2018年第5期25卷 861-868页

作者： Marlene Goubault Rebecca Burlaud Institut de Recherche sur la Biologie de I'Insecte UMR 7261 CNRS-Universite Francois-Rabelais Tours France

lekking males aggregate to attract females and contribute solely to egg fer- tilization, without any further parental care. Evolutionary theory therefore predicts them to be nonchoosy toward their mates, because any lost mating opportunities would out- weigh the benefits associated with such preferences. Nevertheless, due to time costs, the production of energetically costly sexual displays, and potential sperm limitation, the mat- ing effort of lekking males is often considerable. These factors, combined with the fact that many females of varying quality are likely to visit leks, could favor the evolution of male mate preferences. Here, we show that males of the lekking lesser wax moth, Achroia grisella, were indeed more likely to mate with heavier females in choice experiments, even at their virgin mating （i.e., when their reproductive resources have not yet been depleted by previous matings）. This differential female mating success could not be attributed to female behavior as heavy and light females showed similar motivation to mate （i.e., la- tency to approach the males） and time to copulate. Males seem to benefit from mating with heavier females, as fecundity positively correlated with female mass. This new em- pirical evidence shows that male mate choice may have been tmderestimated in lekking species

关键词： fecundity lek lesser wax moth mate choice mating status sexual behavior

THE CLONING AND EXPRESSION OF THE SYNTHETIC LEU-ENKEPHALIN GENE IN ***

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Science in China,Ser.B 1984年第1期27卷 28-36页

作者：敖世洲梁镇和汤锦炎周晓雄丁晓华陈常庆李载平 Shanghai Institute of Biochemistry Academia Sinica

The synthetic leu-enkephalin (lek) gene was joined with pBR322 and transformed toE. coli. The recombinant plasmids containing the lek gene were selected by colony hybri-dization, and characterized by restriction mapping and Southern’s technique. The lac operonwas used to control the expression of the lek gene. A recombinant plasmid, pEL 103, inwhich the lac operon and lek gene are transcribed in the same direction, produces lek inE. coli. The level of lek detected by radioimmunoassay reaches 426 ng per mg of bacte-rial protein.

关键词： lek gene