共查询到20条相似文献,搜索用时 9 毫秒
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Humphrey JD 《Biomechanics and modeling in mechanobiology》2011,10(3):281-282
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Svilicić N 《Collegium antropologicum》2011,35(1):187-192
Visual recording of communication processes between communities or individuals by means of filming of photographing is of significant importance in anthropology, as it documents on site the specific features of various social communities in their encounter with the researcher. In terms of film industry, it is a sort of ethno-documentary pursuing originality and objectivity in recording the given subject, thus fulfilling the research mission. However, the potential of visual anthropology significantly exceeds the mere audiovisual recording of ethnologic realities. Modern methods of analysing and evaluating the role of visual anthropology suggest that it is a technical research service aimed at documenting the status quo. If the direction of proactive approach were taken, then the term ,visual anthropology' could be changed to ,anthropology of the visual,. This apparently cosmetic change of name is actually significantly more accurate, suggesting the denoted proactive swift in perceiving visual anthropology, where visual methods are employed to ,provoke< the reaction of an individual or of the community. In this way the "anthropology of the visual, is promoted to a new scientific sub-anthropological discipline. 相似文献
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With the recent globalization of industrial products, there is doubt as to whether the methodology of Physiological Anthropology has also been standardized. The purpose of this study is to assess signs of standardization through a comparative analysis of Physiological Anthropology design in Germany and Japan. This survey investigates its characteristics through four factors: comfort, usability, sensation and aesthetics.Both nations regard the first three indicators as important. The difference in assessment is, however, considerable. While German physiological anthropologists use subjective evaluation by means of questionnaires, somatometry and biomechanical analysis, their Japanese counterparts apply physiological measurements of the higher nervous system and the autonomic nervous system. Polymorphism and improving functional potentiality have recently gained increasing respect in Japan.Notions of aesthetics are not consciously analyzed in both countries. If the sense of beauty of product design relates to a physical and mental response, developing a systematic analysis on this factor would be a useful task for Physiological Anthropology. 相似文献
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The erythroblastic island: past and future 总被引:5,自引:0,他引:5
J Bernard 《Blood cells》1991,17(1):5-10; discussion 10-4
The erythroblastic island consists of a macrophage surrounded by erythroblasts of different maturation stages. The cohesion of cells is lost during spreading, so that the islands can no longer be seen in smears. However, in undisturbed preparations, either living or fixed, the islands can be visualized, isolated, cultured, and their function studied. Many questions remain, such as the production of growth factors by the macrophage, the causation of the adhesion of cells forming the islands, the role of calcium in the adhesion, and others. New technical advances, including flow cytometry, immunolabeling, and in situ hybridization will assist in answering these questions. 相似文献
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Scanlan PD 《Trends in parasitology》2012,28(8):327-334
Blastocystis is a genetically heterogeneous protist found in the intestinal tract (IT) of many vertebrates, and although it is implicated in a variety of human intestinal disorders, data regarding the clinical relevance of Blastocystis is at best speculative. Several research issues, including a lack of standardization across studies, the potential for intrasubtype variation in pathogenicity, and difficulties associated with diagnostics for many idiopathic disorders of the human IT have led to conflicting reports in support of a role for Blastocystis pathogenicity. Here, several research areas and methodologies are reviewed that if integrated appropriately into a prospective study may prove useful and facilitate a better understanding of the role of Blastocystis in human health and disease. 相似文献
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Anti-idiotype cancer vaccines: past and future 总被引:2,自引:0,他引:2
D. Herlyn Rajasekharan Somasundaram Weiping Li Haruhiko Maruyama 《Cancer immunology, immunotherapy : CII》1996,43(2):65-76
Anti-idiotypic antibodies (Ab2) binding to the antigen-combining site of antitumor antibodies (Ab1) can induce anti-anti-idiotypic
antibodies (Ab3) that specifically bind to the tumor antigen recognized by Ab1. Furthermore, Ab2, mimicking tumor antigens,
have been shown to induce anti-anti-idiotypic proliferative T lymphocytes of the helper and suppressor type, as well as cytotoxic
lymphocytes. The immunomodulatory activities of Ab2 have been demonstrated both in animals and in patients. The demonstration
of tumor growth inhibition by anti-idiotypes in preclinical and phase I clinical studies emphasizes that randomized control
trials should be performed to demonstrate clinical efficacy of Ab2 vaccines.
Received: 25 July 1996 / Accepted: 22 August 1996 相似文献
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Metagenomic analyses: past and future trends 总被引:2,自引:0,他引:2
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Ranavirus: past, present and future 总被引:1,自引:0,他引:1
Lesbarrères D Balseiro A Brunner J Chinchar VG Duffus A Kerby J Miller DL Robert J Schock DM Waltzek T Gray MJ 《Biology letters》2012,8(4):481-483
Emerging infectious diseases are a significant threat to global biodiversity. While historically overlooked, a group of iridoviruses in the genus Ranavirus has been responsible for die-offs in captive and wild amphibian, reptile and fish populations around the globe over the past two decades. In order to share contemporary information on ranaviruses and identify critical research directions, the First International Symposium on Ranaviruses was held in July 2011 in Minneapolis, MN, USA. Twenty-three scientists and veterinarians from nine countries examined the ecology and evolution of ranavirus-host interactions, potential reservoirs, transmission dynamics, as well as immunological and histopathological responses to infection. In addition, speakers discussed possible mechanisms for die-offs, and conservation strategies to control outbreaks. 相似文献
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Chitosomes: past, present and future 总被引:4,自引:0,他引:4
Bartnicki-Garcia S 《FEMS yeast research》2006,6(7):957-965
José Ruiz-Herrera's discovery that chitin microfibrils could be made by a fungal extract paved the way for elucidating the intracellular location of chitin synthetase. In collaboration with Charles Bracker, chitosomes were identified as the major reservoir of chitin synthetase in fungi. Unique in size, buoyant density, and membrane thickness, chitosomes were found in a wide range of fungi. Their reversible dissociation into 16S subunits is another unique property of chitosomes. These 16S subunits are the smallest molecular entities known to retain chitin synthetase activity. Further dissociation leads to complete loss of activity. From studies with secretory mutants, yeast researchers concluded that chitosomes were components of the endocytosis pathway. However, key structural and enzymatic characteristics argue in favor of the chitosome being poised for exocytotic delivery rather than endocytotic recycling. The chitosome represents the main vehicle for delivering chitin synthetase to the cell surface. An immediate challenge is to elucidate chitosome ontogeny and the role of proteins encoded by the reported chitin synthetase genes in the structure or function of chitosomes. The ultimate challenge would be to understand how the chitosome integrates with the cell surface to construct the organized microfibrillar skeleton of the fungal cell wall. 相似文献
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Nealson KH Conrad PG 《Philosophical transactions of the Royal Society of London. Series B, Biological sciences》1999,354(1392):1923-1939
Molecular methods of taxonomy and phylogeny have changed the way in which life on earth is viewed; they have allowed us to transition from a eukaryote-centric (five-kingdoms) view of the planet to one that is peculiarly prokarote-centric, containing three kingdoms, two of which are prokaryotic unicells. These prokaryotes are distinguished from their eukaryotic counterparts by their toughness, tenacity and metabolic diversity. Realization of these features has, in many ways, changed the way we feel about life on earth, about the nature of life past and about the possibility of finding life elsewhere. In essence, the limits of life on this planet have expanded to such a degree that our thoughts of both past and future life have been altered. The abilities of prokaryotes to withstand many extreme conditions has led to the term extremophiles, used to describe the organisms that thrive under conditions thought just a few years ago, to be inconsistent with life. Perhaps the most extensive adaptation to extreme conditions, however, is represented by the ability of many bacteria to survive nutrient conditions not compatible with eukaryotic life. Prokaryotes have evolved to use nearly every redox couple that is in abundance on earth, filling the metabolic niches left behind by the oxygen-using, carbon-eating eukaryotes. This metabolic plasticity leads to a common feature in physically stratified environments of layered microbial communities, chemical indicators of the metabolic diversity of the prokaryotes. Such 'metabolic extremophily' forms a backdrop by which we can view the energy flow of life on this planet, think about what the evolutionary past of the planet might have been, and plan ways to look for life elsewhere, using the knowledge of energy flow on earth. 相似文献
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Immunotherapy: past,present and future 总被引:15,自引:0,他引:15
Waldmann TA 《Nature medicine》2003,9(3):269-277
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On 12-15 May 2011, a diverse group of students, researchers and practitioners from across Canada and around the world met in Banff, Alberta, to discuss the many facets of biodiversity science at the 6th Annual Meeting of the Canadian Society for Ecology and Evolution. 相似文献
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Ice GH 《Collegium antropologicum》2003,27(1):1-6
Biological anthropologists have a strong tradition of studying growth and development and research on aging has been limited. This paper explores the past and current contribution of biological anthropologists to the field of aging through an examination of the American Journal of Physical Anthropology (AJPA) and the American Journal of Human Biology (AJHB). It is clear from this survey that biological anthropologists and human biologists have predominantly studied growth and developmental processes relative to aging. However, there is a trend of increasing interest in aging over time. In the AJHB, papers discussing chronic disease were predominant, followed by reproductive aging (19%), bone aging (15%) and body composition (10%). Within the AJPA, the majority of articles were in the field of human biology (43%) and bioarchaelogy (42%) with a lesser contribution from primatology (14%) and dermatogliphics (1%). Biological anthropologists still have great potential to make contributions to gerontology with our evolutionary and holistic perspectives and focus on cross-cultural research. 相似文献
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Gene duplication: past, present and future 总被引:20,自引:0,他引:20
Holland PW 《Seminars in cell & developmental biology》1999,10(5):541-547
Gene duplication is of central interest to evolutionary developmental biology, having been implicated in evolutionary increases in complexity. These ideas stem principally from the Lewis model for the evolution of the BX-C and Ohno's proposal for genome duplications during chordate evolution. Here I revisit these models and show how recent data have confirmed their essential features, but forced some important revisions. These include revised dates for homeotic gene duplications and for widespread gene duplication in vertebrate evolution. I also outline the major unresolved questions in the study of gene duplication, and its relevance to evolution and development. 相似文献
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Persian or English walnut (Juglans regia L.), the walnut species cultivated for nut production, is one of the oldest food sources known. Persian walnuts, native to the mountain valleys of Central Asia, are grown worldwide in temperate areas. World production exceeds three million tons since 2012, mostly provided by China, the USA, and Iran. Despite very ancient culture of walnut species (Juglans spp.), breeding actually started in the twentieth century. Using a range of methodologies, from morphological markers to the most recent advances in genome analysis, many genetic studies of walnut have been conducted during the past 30 years, including examination of diversity, determination of relationships within or among germplasm collections and populations, phylogenetic and origin elucidation, genetic map construction, and biotic or abiotic stress investigations. The genetic improvement of walnut has undergone great evolution. The producing countries of the Middle East have widely studied morphological characteristics of walnut. The USA and France, for example, are behind important cultivar releases such as “Chandler” and “Franquette.” Finally, genomics represents a major breakthrough in walnut improvement, in particular by recent sequencing of both chloroplast and nuclear genomes. This review summarizes worldwide molecular and “omics” studies and gives an overview of the main walnut breeding programs. 相似文献