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31.
INTRODUCTION It is well-known from the genetic code structure that there exists a connection between codons and physical and chemical amino acid properties (Lewin, 1983). Codon properties in turn are defined by physical properties of the nucleotides from which they are compounded (Ratner, 1985; 2000). The most important properties of nucleotides as complex three-dimensional molecules are their dipole moment, heat of formation and energy of the most stable con- formation (Schneider and Be… 相似文献
32.
Y.A. Saet 《Journal of The Franklin Institute》2005,342(5):489-501
A system of non-Hermite, non-orthogonal functions that are new for concrete applications is introduced to generate explicit and previously unknown, physically meaningful solutions for bar and plate equations. The approach allows in some cases to establish completeness of these sets of solutions. Various other separate results technically related to these basic development are presented. In the available literature there are no registered efforts to extract the two velocities from exact solutions of the equations of the processes in which the two parameters are explicitly present. 相似文献
33.
Islam MR Khandoker MA Afroz S Rahman MG Khan RI 《Journal of Zhejiang University. Science. B》2007,8(7):465-469
Goat ovaries were collected from the slaughterhouse and categorized as right, left, corpus luteum (CL)-present and -absent group and evaluated on the basis of weight (g), length (cm), width (cm), number of follicles, follicles aspirated and number and state ofcumulus-oocyte-complexes (COCs). Comparatively higher weight [(0.66±0.02) vs (0.64±0.02) g], length [(1.17±0.02) vs (1.1 ±0.02) cm] and width [(0.77±0.02) vs (0.74±0.02) cm] were found in right ovaries than those of left. On the other hand significantly (P〈0.05) higher weight [(0.71±0.03) vs (0.64±0.01) g] and width [(0.76±0.03) vs (0.75±0.01) cm] were found in CL-present group than those of CL-absent group of ovaries. The left ovaries contained comparatively higher number of normal COCs [(1.06±0.09) per ovary] than fight ovaries [(1.03±0.10) per ovary] and the similar trend was found in total number of follicles [(4.51±0.25) vs (4.30±0.23) per ovary] and follicles aspirated [(2.55±0.14) vs (2.52±0.12) per ovary]. But the total COCs per ovary was almost similar in both ovaries [right and left: (1.85±0.12) and (1.85±0.11) per ovary, respectively]. Higher number of total COCs [(1.87±0.09) vs (1.76±0.16) per ovary], total number of follicles [(4.45±0.19) vs (4.16±0.37) per ovary], follicles aspirated [(2.55±0.10) vs (2.48±0.21) per ovary] and normal COCs [(1.12±0.07) vs (0.76±0.14) per ovary] were found in CL-absent group than those of CL-present group of ovaries. 相似文献
35.
Rebecca J. M. Gotlieb Courtney Pollack Jessica W. Younger Elizabeth Y. Toomarian Genevive Allaire‐Duquette Nadja M. Mariager 《Mind, Brain, and Education》2019,13(3):120-132
An increasing number of scholars are being trained in the field of mind, brain, and education (MBE), yet discussions of trainees' needs and how to meet them are rare. We, the inaugural International Mind, Brain, and Education Society (IMBES) Trainee Board, identify three broad needs of MBE trainees: guidance and support, greater access to and connections among the MBE community, and professional development. We report a first step to address these needs: a daylong trainee conference, which included sessions to foster connections among trainees, provide mentorship from MBE leaders, and provide knowledge and skill building for careers. Attendees' survey results suggest the conference successfully supported trainees' development. As substantial trainee needs remain, we offer specific ways that principal investigators, institutions, funding agencies, future IMBES trainee boards, and the MBE community can further address trainees' needs to support early‐career development and strengthen the MBE field generally. 相似文献
36.
霍桂利 《山西广播电视大学学报》2011,(6):51-53
分布式算法具有高度的适应性、可伸缩性、低性能损耗和容易连接等特性,可以作为挖掘关联规则的理想平台。分布式系统环境下实现高效分布式算法的方法。数据挖掘同关系数据库的关系,实现算法对数据库结构的要求,明确在实现中需要解决的几个核心问题。 相似文献
37.
38.
Lei Shuai Gongxun Zhong Quan Yuan Zhiyuan Wen Chong Wang Xijun He Renqiang Liu Jinliang Wang Qinjian Zhao Yuxiu Liu Ningning Huo Junhua Deng Jingjing Bai Hongchao Wu Yuntao Guan Jianzhong Shi Kegong Tian Ningshao Xia Hualan Chen Zhigao Bu 《国家科学评论(英文版)》2021,8(3):16-23
Minks are raised in many countries and have transmitted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to humans. However, the biologic properties of SARS-CoV-2 in minks are largely unknown. Here, we investigated and found that SARS-CoV-2 replicates efficiently in both the upper and lower respiratory tracts, and transmits efficiently in minks via respiratory droplets; pulmonary lesions caused by SARS-CoV-2 in minks are similar to those seen in humans with COVID-19. We further found that a spike protein-based subunit vaccine largely prevented SARS-CoV-2 replication and lung damage caused by SARS-CoV-2 infection in minks. Our study indicates that minks are a useful animal model for evaluating the efficacy of drugs or vaccines against COVID-19 and that vaccination is a potential strategy to prevent minks from transmitting SARS-CoV-2. 相似文献
39.
Mizoguchi Yūzō 《Inter-Asia Cultural Studies》2016,17(4):574-605
This article excavates some of the core intellectual elements underlying the Xinhai Revolution of 1911 and their historical genealogies. Rather than focusing on the modern nature of the revolution, Mizoguchi locates the revolution within the context of traditional Chinese culture and thought. A central focus of the article is the notion of “self-governance” (zizhi), which played a central role in determining the shape the revolution was to ultimately take. It analyzes the social thought of key figures of the Qing period, showing how in modified guise, core Confucian ethical concepts such as the dichotomy between the private (si) and public (gong) as well as utopian concepts such as datong (great harmony) determined the deep structure of revolutionary thought at the end of the Qing and into the Republican and Communist periods. 相似文献
40.
S. Y. Aspinall 《Psychology in the schools》1996,33(4):341-349
Today's children increasingly are exposed to death in their environments. The professional literature indicates potentially adverse effects of unresolved childhood grief. These factors point to the need for death education to be included in the school curriculum, with a focus on promotion of health and prevention of disorders. School psychologists should be in the forefront of advocating, developing, and implementing such a program, in collaboration with the teachers. This article reviews what is known about children's conceptions of death, how children grieve, and relevant research. The guidelines of clinicians in the field are presented on such issues as explaining death to children, their attending funerals, and treating bereaved youths and their families. In addition the broad outline for a death education program is presented, incorporating developmental and theoretical principles about children's grieving process. The curriculum's goals are to provide students with appropriate information about the life cycle, to identify affective issues associated with grief, and to facilitate the development of effective coping strategies for managing bereavement reactions. A death education program may help students to more fully appreciate life while realizing that death is a natural part of the life process. 相似文献