Xem 1-20 trên 60 kết quả Body size
  • More than ten years ago, two of us (AGH and DGR) were lucky enough to edit a previous symposium of the British Ecological Society (BES) – Aquatic Ecology: Scale, Pattern and Process (Giller, Hildrew & Raffaelli, 1994). In the Introduction to that volume, we pointed out that the BES had not devoted a single previous symposium to aquatic ecosystems.

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  • Humans are characterized by having a large brain relative to body size, with a particularly well developed neocortex, prefrontal cortex and temporal lobes, making them capable of abstract reasoning, language, introspection, problem solving and culture through social learning. This mental capability, combined with the adaptation to bipedal locomotion that frees the hands for manipulating objects, has allowed humans to make far greater use of tools than any other living species on Earth.

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: A quantitative analysis of the mechanism that controls body size in Manduca sexta...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic effects of static magnetic fields. Body size increase and lethal mutations induced in populations of Drosophila melanogaster after chronic exposure

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Identification of co-regulated transcripts affecting male body size in Drosophila...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Body size reaction norms in Drosophila melanogaster: temporal stability and genetic architecture in a natural population

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Body size and developmental temperature in Drosophila simulans: comparison of reaction norms with sympatric

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  • The relationship of structure to function has been substantially studied. Over the years, research results in this area of interest have well demonstrated this relationship. While physique essentially encompasses the study of body structure, body size, and body composition, fitness and performance are descriptives of the applied interaction of morphological, muscular, cardiovascular, motor, and metabolic component capacities, abilities, and skills that are developed and acquired through exercise and physical training programs....

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  • Order Anura - Frogs: Adults lack tails and have four legs, Body size ranges from 2-3 up to about 15 cm, Aquatic larvae usually present, Larvae are basically herbivorous, Adults are never herbivorous, 5 Families known from Cat Tien, 0-40 species known from Cat Tien

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  • CHAPTER 9 USABILITY Karl H. E. Kroemer, Ph.D. Professor of Industrial and Systems Engineering Virginia Tech Blacksburg, Virginia 9.1 DESIGNING FOR HUMAN BODY SIZE / 9.2 9.2 DESIGNING FOR HUMAN BODY POSTURE / 9.5 9.3 DESIGNING FOR REACH AND MOBILITY / 9.9 9.4 DESIGNING FOR HUMAN FORCE AND POWER / 9.13 9.5 DESIGNING FOR FAST AND ACCURATE CONTROL ACTIVATION /9.17 9.6 DESIGNING LABELS AND WARNINGS / 9.23 9.7 DESIGNING FOR VISION / 9.24 9.8 DESIGNING FOR MATERIAL HANDLING / 9.25 9.9 CONCLUSION / 9.28 REFERENCES / 9.28 ADDRESSES / 9.

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  • Prostate cancer is the most common male cancer diagnosed in Western populations. Autopsy studies have shown that with increasing age, the majority of men will develop microscopic foci of cancer (often termed “latent” prostate cancer) and that this is true in populations that are at both high and low risk for the invasive form of the disease (1). However, only a small percentage of men will develop invasive prostate cancer. The prevalence of prostate cancer is, thus, very common; but to most men, prostate cancer will be only incidental to their health and death....

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  • There are several actors involved in the development of marketing communications and their subsequent dissemination to the target audience. The key relevant actors are illustrated in Figure 3. Food manufacturers and food retailers (and their respective trade associations and representative bodies) range from large global food and non-alcoholic beverage producers to small local vendors and kiosks, including supermarkets and quick- service restaurant chains.

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  • Today, approximately one in every hundred babies born in the US is conceived using ART. Growth in the use and scientific refinement of ART is carefully monitored by the American Society for Reproductive Medicine (ASRM) and its affiliate, the Society for Assisted Reproductive Technology (SART), whose memberships consist of specialists in this field of medicine. In December 2009, ASRM convened a meeting of professionals, patient advocates, congressional and federal agency representatives, legal experts, and consumers to examine the oversight of ART.

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  • The core of this chapter is a discussion of EITC-related behavioral issues and research. Section 3.3 provides EITC program statistics. As would be expected with a program that has more than tripled in size (in real dollars) in the 1990s, a considerable amount of attention has been paid to the EITC in recent years. In section 3.4, we outline the conceptual underpinnings of much of this recent work and discuss EITC participation and compliance, its effects on labor force participation and hours of work, marriage and fer- tility, skill formation, and consumption.

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  • The distinctive features of reproduction in squirrels are the lack of allometric influences on the duration of reproductive investment; the strong allometric influences on offspring mass; and a trade-off between number and size of young, suggesting an important developmental component to reproduction. Lengths of gestation and lactation do not vary with body size but neonatal and weaning mass do. Apparently, the major constraint on reproduction in squirrels is not resources per se (food, calories, minerals, or water) but rather the length of time such resources are available.

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  • Biodiversity forms patterns not just across space, but also across time. New species emerge, old ones become extinct; rates of diversification speed up and slow down. These long-term patterns in evolution get their start in the generation-to- generation processes of natural selection, genetic drift, and reproductive isolation. When a lineage of organisms evolves over a few million years, these processes can potentially produce a wide range of patterns (see ). Natural selec- tion may produce a significant change in a trait such as body size, for example.

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  • S ystems ecology, also called ecosystem theory, offers today a complete theory about how ecosystems are working as systems. The theory will inevitably be improved in the coming years, when it hopefully will be used increasingly to explain ecological observations and to facilitate environmental management including the use of ecotechnology. The theory is, however, sufficiently developed today to be presented as a complete theory that offers a wide spectrum of applications.

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  • The physical and functional properties of the means are conditioning the ways in which the information may be articulated. Therefore, factors such as economy and access to raw materials play an important role in determining the level of cognitive complexity of a society. According to Lave (1988: 1), cognition is distributed, i.e., “stretched over, not divided among—mind, body, activity, and culturally organized settings (which include other actors).

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  • A reduced water supply can be tolerated by a number of species of desert-adapted animals and under these conditions its use becomes more efficient. Efficiency of use and dehydration tolerance vary among species. Among domestic animals kept under the same conditions, cattle lose water three times faster than camels (equivalent to 6.1% of body weight per day at day/night temperatures of 40°C/25°C) and sheep two to two and a half times faster (4 to 5% of body weight).

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  • What are the main functions of automobile nowadays? - To serve the needs of people transportation - Shipping goods - Tourist - Để phục vụ nhu cầu vận chuyển người - Vận chuyển hàng hoá - Du lịch

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