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11.
Roy E. Licklider 《Human ecology: an interdisciplinary journal》1978,6(2):165-177
This paper considers projections made about world population levels and world food production from 1945 to 1970, attempting to evaluate them in terms of actual levels of 1975. Most underestimated the population explosion of the past two decades; short-term estimates were more reliable than long-term ones; there was little variation in population estimates at any one time; and U. N. figures were generally the most useful. Projections of world food production were less satisfactory than those of population levels, as both data and measures were debatable. The research suggests some of the problems in evaluating the danger of world famine by examining projections of population and food supply mechanically and in isolation from the complex processes which affect these factors. 相似文献
12.
A checklist of identified oribatid mite taxa from riverine freshwater environments from six islands in Polynesia (New Caledonia, Tahiti, Moorea, Rurutu, Tubuai, Raiatea) is presented; 18 species, 16 genera and eight families were recorded. Trhypochthoniellus longisetus (Berlese, 1904) and Trimalaconothrus albulus Hammer, 1972 prevailed on distribution. Fortuynia smiti
sp. n. (Fortuyniidae) is described from New Caledonia. The new speciesis morphologically most similar to Fortuynia marina Hammen, 1960 from New Guinea, but it differs from the latter by the longer notogastral setae dm, lm, c2, p1, epimeral setae 3b and adanal setae ad1 and the presence of prodorsal lateral ridges. 相似文献
13.
AYODELE S. JEGEDE 《Developing world bioethics》2009,9(3):128-137
Africa is a continent in transition amidst a revival of cultural practices. Over previous years the continent was robbed of the benefits of medical advances by unfounded cultural practices surrounding its cultural heritage. In a fast moving field like genetic screening, discussions of social and policy aspects frequently need to take place at an early stage to avoid the dilemma encountered by Western medicine. This paper, examines the potential challenges to genetic screening in Africa. It discusses how cultural practices may affect genetic screening. It views genomics science as a culture which is trying to diffuse into another one. It argues that understanding the existing culture will help the diffusion process. The paper emphasizes the importance of genetic screening for Africa, by assessing the current level of burden of diseases in the continent and shows its role in reducing disease prevalence. The paper identifies and discusses the cultural challenges that are likely to confront genetic screening on the continent, such as the worldview, rituals and taboos, polygyny, culture of son preference and so on. It also discusses cultural practices that may promote the science such as inheritance practices, spouse selection practices and naming patterns. Factors driving the cultural challenges are identified and discussed, such as socialization process, patriarchy, gender, belief system and so on. Finally, the paper discusses the way forward and highlights the ethical considerations of doing genetic screening on the continent. However, the paper also recognizes that African culture is not monolithic and therefore makes a case for exceptions. 相似文献
14.
Miguel Kottow 《Developing world bioethics》2020,20(3):122-129
Concern about the rapid ageing of all societies reaches alarming proportions as healthcare inequities are steeply rising, prompting the elderly to live longer but subject to insufficient social protection and healthcare in the wake of dwindling public resources. The aged population of developing nations are facing additional hardships due to the growing gap between needs and the financial reductions of public institutions, retirement funds, and the trend towards privatization of essential services turned into commodities. Current approaches to allocation of insufficient resources without ageist discrimination are briefly discussed: individual self‐care aimed at successful, active and healthy ageing based on resourcefulness of the privileged elderly; utilitarian approaches founded on QALY and fair innings, and human rights focused on the plights of the elderly. These approaches cannot apply to resources poor nations, who need to engage in context‐bound bioethics dealing with the realities of their exposed ageing population. A developing world bioethics is needed to face the plights of the elderly in countries with low and middle‐income and insufficient social capital. Suggested are: 1) a phenomenological approach based on the interaction of bioethics and ethnology, furthering grass‐roots input from the elderly; 2) Create small communities –campus‐like boroughs– to simplify accessibility to social services and healthcare facilities, as an alternative to the high‐cost WHO proposal of age‐friendly large cities. 相似文献
15.
造礁石珊瑚是珊瑚礁框架建造者, 具有维持珊瑚礁生态系统功能和稳定性的重要作用, 其分类对于造礁石珊瑚和珊瑚礁的研究与保护至关重要。目前, 随着分子系统学的不断发展, 造礁石珊瑚的分类体系发生改变, 伴随着出现大量同物异名。近年来也出现许多无中文学名的中国造礁石珊瑚新记录种, 这些都给物种认定和命名带来困难, 阻碍了中国造礁石珊瑚的研究与保护工作。为此, 本文收集了中国造礁石珊瑚物种记录文献资料, 采用最新的造礁石珊瑚分类体系, 确认同物异名, 形成中国造礁石珊瑚物种名录, 并对中国造礁石珊瑚物种的中文名进行统一的规范和命名。结果表明, 中国共有造礁石珊瑚2个类群16科77属445种。与《中国动物志·腔肠动物门·珊瑚虫纲·石珊瑚目·造礁石珊瑚》相比, 科级分类阶元新增7个科, 变更5个科; 属级分类阶元新增26属, 变更1属, 合并3属; 种级分类阶元新增291种, 变更13种, 合并20种, 新命名305个物种的中文名。并且筛选出187个同物异名。此外, 由于造礁石珊瑚分类体系现仍有部分争议, 文章也进行了讨论说明。 相似文献
16.
根据对新疆博格达山地面生地衣群落27个样点(20 m×20 m)调查的数据,以各地衣种的盖度为指标结合双向指示种分析方法(TWINSPAN)和除趋势对应分析法(DCA)对博格达山地面生地衣群落进行数量分类并分析了群落结构特征及其多样性和相似性。采用典范对应分析法(CCA)对各群落的物种分布格局与环境因子的关系进行了探讨。结果表明,TWINSPAN分析和DCA排序将分布在博格达山的37种地面生地衣分为以下5个群丛。群丛1:膜地卷(Peltigera membranacea)+伴藓大孢蜈蚣衣(Physconia muscigena)群丛;群丛2:地卷(Peltigera rufescens)+伴藓大孢蜈蚣衣(Physconia muscigena)群丛;群丛3:裂边地卷(Peltigera degenii)+平盘软地卷(Peltigera elisabethae)群丛;群丛4:喇叭石蕊(Cladonia pyxidata)+犬地卷(Peltigera canina)群丛;群丛5:盾鳞衣(Placidium squamulosum)+缠结茸枝衣(Seirophora contortuplicata)群丛。物种多样性以群丛4最大为3.427;群丛1最小为0.672;群丛1和群丛4间的相似性最高为0.889,群丛3和群丛4相似性系数最低为0.607。CCA排序结果反映,该地区地面生地衣的分布受到森林植被郁闭度、人为干扰、光照强度的影响,而地表植被盖度和土壤pH等因素的影响不大。 相似文献
17.
Masoumeh Shayanmehr Elliyeh Yahyapour Morteza Kahrarian Elham Yoosefi Lafooraki 《ZooKeys》2013,(335):69-83
The Collembola fauna of Iran is little known and no comprehensive examination of this group of Hexapoda is available for this region. The only notable work on Collembola was carried out by Cox (1982). Recently, studies on the Collembola fauna have started in several regions. In this paper, publications by different researchers are documented and the species that have been found in different regions of Iran until January 2013 are listed. At present, 112 species, belonging to 18 families and 57 genera are known from Iran. 相似文献
18.
An up-to-date checklist of the Italian Dermestidae is provided. The presence of 95 species in Italy is confirmed, while further 5 species (Dermestes (Dermestes) vorax Motschulsky, 1860, Thorictuspilosus Peyron, 1857, T. wasmanni Reitter, 1895, Attagenus (Attagenus) simonis Reitter, 1881 and Globicornis (G.) breviclavis (Reitter, 1878)) and 1 subspecies (A. (A.) tigrinus pulcher Faldermann, 1835) are excluded from the Italian fauna.Attagenus (Attagenus) calabricus Reitter, 1881 and A. (A.) lobatus Rosenhauer, 1856 are for the first time recorded from Abruzzi and Tuscany respectively; A. (A.) silvaticus Zhantiev, 1976 is recorded for the first time from mainland Italy (Apulia); Anthrenus (Anthrenus) angustefasciatus Ganglbauer, 1904 is new to northern Italy (Friuli-Venezia Giulia), central Italy (Tuscany), Apulia and Basilicata; A. (A.) munroi Hinton, 1943 is new to central Italy (Elba Island); A. (A.) delicatus Kiesenwetter, 1851 is for the first time recorded from Apulia; Globicornis (Globicornis) fasciata (Fairmaire & Brisout de Barneville, 1859) is new to southern Italy (Basilicata); G. (Hadrotoma) sulcata (C.N.F. Brisout de Barneville, 1866) is for the first time recorded from central Italy (Abruzzi), Campania and Sicily, whileTrogoderma inclusum LeConte, 1854 is new to Apulia.Seven species (Dermestes (Dermestes) peruvianus Laporte de Castelnau, 1840, D. (Dermestinus) carnivorus Fabricius, 1775, D. (Dermestinus) hankae Háva, 1999, D. (Dermestinus) intermedius intermedius Kalík, 1951, D. (Dermestinus) szekessyi Kalík, 1950, Anthrenus (Anthrenops) coloratus Reitter, 1881 and Trogodermaangustum (Solier, 1849)) recently recorded from Italy (without further details) are discussed.The lectotype and a paralectotype are designated forAttagenus (A.) calabricus Reitter, 1881 from Calabria.Attagenus pellio (Linnaeus, 1758) var. pilosissimus Roubal, 1932 is removed from synonymy with A. (A.) pellio and recognized as a valid species (stat. prom.); it is known from Lombardy, Apulia and Calabria. 相似文献
19.
《African Journal of Aquatic Science》2013,38(2):171-174
Additions and changes to the scientific and common names of southern African freshwater fishes made since 1993, are recorded and explained. Nineteen new scientific names are listed including five new species, three genus-name changes, three species-name changes and four new records from the area. Recommended common names for nineteen species are listed. 相似文献
20.
An overview of the Tipulidae known to occur in northern Morocco with an emphasis on the Rif mountains is given, incorporating new distribution data based on recently collected material in the area. Dolichopeza (Dolichopeza) hispanica, Tipula (Lunatipula) subpustulata, and Tipula (Yamatotipula) afriberia afriberia are recorded for the first time for the Rif. Tipula (L.) stimulosa Mannheims, 1973 and T. (Vestiplex) vaillanti vaillanti Theowald, 1977 are reported for the first time for the Rif and Morocco. Tipula (Lunatipula) pseudocinerascens Strobl, 1906 and Tipula (Savtshenkia) confusa van der Wulp, 1883 are recorded for the first time for the Rif, Morocco and North Africa. A new species of the subgenus Lunatipula, T. (L.) pjotri n. sp., is described and illustrated. Nephrotoma exastigma, previously reported for the Rif, seems to be absent in Morocco. Reports of Tipula (Emodotipula) obscuriventris Strobl, 1900 for Morocco actually refer to T. (E.) leo. This brings the number of Tipulidae for Morocco to 39 species and for the Rif to 28. An updated checklist of the Tipulidae of Morocco is provided. 相似文献