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61.
对贵州省38个县633个乡(镇)的1121头耕牛(黄牛366头,水牛755头)用蠕虫学局部剖检法在其中45头牛的瘤胃内检出巨盘腹袋吸虫(Gastrothylaxmagnadiscussp.nov.),总感染率为4.01%,在不同性别的黄牛、水牛无显著差异,而与年龄呈正相关。该吸虫的感染有明显的季节性和地域性,主要分布于潮湿低洼地区。另剖检768只山羊和91只绵羊,均未发现该吸虫感染  相似文献   
62.
Abstract:  Optimization of a light emitting diode (LED)-based excitation system for the detection of pretreated fingerprint fluorescence is described. Fluorescent ridges can usually be excited by irradiation with forensic light sources such as xenon arc lamps or quartz-halogen lamps with high-power output and suitable filters. However, they are too expensive for many crime laboratories in smaller organizations. We concentrated on LEDs which have advantages over conventional light sources in that they are simpler and of lower cost, but the power output and quality of each individual LED unit is not sufficient for the detection of weak fluorescent ridges. To resolve this subject, blue and green LED arrays composed of ninety LED units were adopted and suitable low pass filters for them were designed. An experimental system, consisting of blue and green LED arrays with the suitable low pass filters for illumination, high pass filters for viewing, a digital camera and a computer, was tested. The fluorescent images of cyanoacrylate ester fumed/rhodamine 6G stained fingerprint on white polyethylene sheet and weak fluorescent ridges of ninhydrin/indium chloride treated fingerprint on white paper were successfully detected and photographed. It was shown that the improvement of LED beam in intensity and quality can compensate the disadvantages, resulting in well-contrasted images.  相似文献   
63.
First, we describe and analyze the main set of G77 positions in the climate negotiations and the dynamics behind the emergence of these positions. While it is puzzling that the G77 has managed to maintain itself as a group in spite of internal differences along variables as prosperity, emissions and vulnerability to climate change, we claim that a core element behind this cohesion is that these countries share domestic governance problems as much as poverty and economic underdevelopment. Second, we discuss how recent trends of economic and political development in the third world influence the climate policy strategies of the G77 group in the future. The main factor here is the economicand social progress in states like China, India and Brazil, which separates them from the poorer and less powerful G77 states. Increasing heterogeneity along variables like governance, growth, and importance for the international economy is creating an increasing drive among the most successful G77 states towards bilateral agreements with industrialised powers. We do not foresee a departure from traditional G77 positions and membership by these states in the official climate negotiations or a departure from the Kyoto process, but an increasing reliance on bilateral agreements with industrialized countries that link considerations for energy security and the environment. The ability to gain these advantages without commitments may make these states less interested in adopting commitments for the post-Kyoto period. This is unfortunate for the LDCs and the AOSIS groups within the G77, who probably are most vulnerable to climate change.
Sjur KasaEmail:
  相似文献   
64.
Taejin Hwang 《亚洲研究》2019,51(2):253-273
ABSTRACT

As the largest contingent of Americans in postwar South Korea, the G.I. best represented the United States’ Cold War objectives. Their deployment was an emblem of hard power containment, but the G.I. also embodied soft power integration, and through both, G.I.s helped to promote Pax Americana. This article focuses on the militarized masculinity of these ambassadors of America and their people-to-people diplomacy in South Korea between 1954 and 1966. These American G.I.s constructed their militarized masculinity vis-à-vis the Korean male Other, their “lesser” counterparts – the hapless houseboy, the inferior partner soldier, and the menacing slicky boy. At the same time, this liberal imperialism did not go uncontested. Violent imaginaries of the American G.I. from the borderlands were used by Koreans to demand a new bilateral framework – the Status of Forces Agreement in 1966 – to replace the outmoded wartime extraterritorial jurisdiction wielded by the American military after cessation of hostilities on the Korean peninsula in 1953. The militarized masculinity practiced in everyday encounters, thus, became the basis of a critique of American liberal imperialism in one of the United States closest Cold War “brother” nations.  相似文献   
65.
LGBQ youth are more likely to consider, plan, and/or attempt suicide compared to their heterosexual peers. Evidence from the general population suggests that risky behaviors, like suicide, may be mediated by protective factors, including social support and self-efficacy. Using Agnew’s general strain theory and data from a statewide probability sample, the results of this study suggest that victimization, as a source of strain, is a risk factor for both LGBQ and heterosexual youth suicidality. While social support and self-efficacy reduce the risk of suicidality among heterosexual youth, they are not significant protective factors for LGBQ youth. Theoretical and policy implications are discussed.  相似文献   
66.
Peter Marshall 《圆桌》2015,104(1):19-30
This article offers a personal view of Britain’s place in the contemporary world, analysed in terms of five interlocking rings: the traditional three, i.e. relations with the United States, with Europe and the Commonwealth, to which are added the concepts of process and soft power.  相似文献   
67.
This article is a contribution to recent literature on the shape of the polycentric world order. It argues that the Third World remains a valid concept for describing the interests and ideas that shape the foreign policies of many key non-Western states. However, the Third World has changed in a fundamental way. The article describes the historical emergence and contemporary manifestations of a ‘creative’ Third World in contrast to the ‘protest’ Third World of the past. It describes the nature of this shift and how it is reshaping Western leadership. It argues that the main challenge for the West is to create a coherent pluralism in international order that embraces this creative Third World.  相似文献   
68.
将禽副粘病毒2型的标准毒株Yucaipa病毒和国内分离株F4、F6和F8株分别接种SPF鸡胚,收获鸡胚尿囊液;经差速离心和蔗糖密度梯度离心后,分别制备电镜样品和免疫电镜样品;经10 g/L醋酸双氧铀负染后电镜观察病毒粒子形态.电镜下病毒粒子大小差别较大,形态呈圆形或椭圆型,直径150-300 nm,有结构致密的基质蛋白膜,有的囊膜外可见纤突.免疫电镜样品中病毒明显集中,便于观察.  相似文献   
69.
Recently a revisionist view of strain theory's empirical adequacy has emerged which holds that the theory's explanatory power depends on how it is operationalized. With an adult community sample, we empirically assess three separate measures of strain to explain self-reported crime: the gap between aspirations and expectations, blocked opportunities, and relative deprivation. The findings reveal that the aspirations-expectations measure is not related to criminal involvement, while perceived blocked opportunities and feelings of relative deprivation significantly affect adult offending. These relationships, however, fail to persist after measures from competing theories (i.e., low self-control, differential association, and social bond) are introduced as controls in the regression equations. Thus, measures from rival theories offer a more fruitful approach to explaining self-reported adult offending.A version of this paper was presented at the 1993 American Society of Criminology meetings, Phoenix, Arizona.  相似文献   
70.
Die Ver?u?erung eines von mehreren in einheitlichen Mietr?umen geführten selbst?ndigen Betriebes bewirkt wegen der ohne Zustimmung des Vermieters nicht m?glichen Zerlegung der Mietrechte den Rechtsübergang nicht.  相似文献   
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