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61.
An adult male of Maynard's Longnose Sand Snake (Lytorhynchus maynardi) was collected on 24 July 2009 from the east of Sistan and Baluchistan Province in south-eastern Iran. The new locality is the westernmost record of this species in western Asia, and the first record for 42 years from Iran. Information on the geographic distribution of the genus Lytorhynchus Peters, 1863 in Iran, comparative morphology and some ecological data are presented here.  相似文献   
62.
目的:调查孝感城区中老年对慢性病及其社区管理现状认知情况。方法:选择2010年7月至2015年7月在孝感城区3个社区的500名中老年人作为研究对象,利用自拟调查问卷对所有受试者进行数据调查,分析孝感城区中老年对慢性病的认知情况,及对慢性病社区管理现状的认知情况,分析影响慢性病认知的因素。结果:在慢性病种类中,孝感城区中老年人对于高血压和糖尿病,及风湿性关节炎与慢性支气管炎的认知率较高,而对于癌症、偏瘫及血栓的认知率较低,差异有统计学意义(P0.05)。在慢性病的危险因素中,孝感城区中老年人对于缺乏锻炼、吸烟及膳食不合理的认知率明显较高,而对于酗酒、缺乏保健知识及悲观情绪的认知率明显较低,差异有统计学意义(P0.05)。在慢性病社区管理现状上,孝感城区中老年对于指导其改变生活习惯的认知率较高,为62.00%,而在进行三级预防、强化慢性病自我管理、定期举办慢性病专题讲座以及建立社区卫生的信息服务平台等方面的认知率明显较低,分别为22.40%、36.80%、42.20%及21.80%,差异有统计学意义(P0.05)。Logistic分析显示,文化程度低、经济收入低、未患慢性病及年龄≥60岁均为慢性病认知的危险因素。结论:孝感城区中老年对慢性病及其社区管理现状认知仍存在一定的不足,相关社区卫生管理部门应针对问题的影响因素,积极采取措施,改善社区管理现状。  相似文献   
63.
One hundred and seventy collected samples from Jebil section have been carefully studied for their ostracod content and referred to 41 species belonging to 20 genera. Their vertical distribution allowed to distinguish five successive associations of ostracod assemblages; two of which are correlated with the Early Lutetian, one with the Late Lutetian, another association with the Bartonian and the last one with the Priabonian. Community structure of the collected ostracod fauna has been studied; three indices have been calculated for each sample: Shannon (diversity), Margalef (richness) and Equitability indexes. In the lower and the middle part of the Formation, they indicate a stable environment supporting high diversity ostracod communities; whereas in the upper portion the environmental conditions were unstable characterized by low diversity. The results of a multivariate statistical method, using the cluster analysis and the Detrended Correspondence Analysis of the 41 ostracod species and the 170 samples, have led to conclude that the most effective environmental factor in the study area is the paleodepth and of less importance oxygenation and salinity. Thus, it allowed to distinguish four palaeoenvironmental intervals within the Cherahil Formation: the first one represented by taxa that are known from the shallower parts of the shelf; the second interval includes the majority of the encountered species of inner neritic shelf with normal salinity; the third one, corresponding to an outer neritic domain; and the last interval refers to a circalittoral environment, is comprised mainly of Cytherella angulata and of Soudanella laciniosa triangulata.  相似文献   
64.
The field of reproductive medicine witnessed a breakthrough in September 2014 with the first successful live birth post uterine transplantation. This success represents the culmination of decades' worth of research on infertility and reproductive medicine. This subject of infertility gathers special attention in the Middle East, as childbearing is given paramount importance in the family unit. And as with any new medical advancement, Middle Eastern people look to their religious authorities for guidance. This paper describes the various ethical quandaries related to uterine transplantation, from a perspective of the religious and societal factors that are unique to the Middle East, and embeds them within the conversation of its alternative solutions.  相似文献   
65.
The spatial structure of archeological sites can help reconstruct the settlement dynamics of hunter‐gatherers by providing information on the number and length of occupations. This study seeks to access this information through a comparison of seven sites. These sites are open‐air and were all excavated over large spatial areas, up to 2,000 m2, and are therefore ideal for spatial analysis, which was done using two complementary methods, lithic refitting and density zones. Both methods were assessed statistically using confidence intervals. The statistically significant results from each site were then compiled to evaluate trends that occur across the seven sites. These results were used to assess the “spatial consistency” of each assemblage and, through that, the number and duration of occupations. This study demonstrates that spatial analysis can be a powerful tool in research on occupation dynamics and can help disentangle the many occupations that often make up an archeological assemblage.  相似文献   
66.
Occurrence of the family Ismaridae Thomson is recorded for the first time from Iran, represented by a single species, Ismarus rugulosus Förster, 1850. A series of diagnostic characters and morphometric ratios for this species is presented, as well as a distribution map throughout the Holarctic region.  相似文献   
67.
刘武  吴秀杰  邢松 《人类学学报》2019,38(4):473-490
以往,在东亚大陆发现的更新世中期人类化石被分别归入直立人和古老型智人。这种分类的主要依据是化石形态特征以及年代。魏敦瑞对周口店第一地点人类化石研究描述的一些头骨、下颌骨和牙齿特征通常被作为判定直立人的标准。根据这些化石的年代分布,一般将30万年前的中更新世晚期作为划分直立人与古老型智人的大致年代界限。近20年来,在非洲、欧洲和东亚新发现了一些更新世中期人类化石,目前古人类学界对中国更新世中期人类化石特征及演化有了与以往不同的认识。最近对大荔、许家窑、盘县大洞、许昌、华龙洞等人类化石的研究显示,近30万年以来东亚大陆人类演化呈现复杂的多样性,将这一时期人类全部归入古老型智人难以准确反映更新世中期中国古人类演化模式及规律。本文结合近年中国更新世中期人类演化研究进展,选择部分具有演化及分类价值的形态特征,分析这些特征在更新世中期中国古人类化石的表现特点。在此基础上,对更新世中期中国古人类演化模式做了尝试性探讨。本研究发现,周口店、和县、沂源、南京等中更新世早期人类化石呈现有较多的区域性特征,形态特征表现相对稳定;而大荔、金牛山、许家窑、许昌、华龙洞、马坝、盘县大洞等中更新世晚期人类在化石形态特征表现复杂多样,变异范围大。此外,在这一时期人类化石上发现较多与生存活动、健康、环境适应有关的证据。根据这些发现,作者认为中国中更新世早期组人类演化以形态连续性为主;进入中更新世晚期,中国古人类演化区域性特征减弱,演化模式以多样性为主。一系列新的化石发现和研究证据提示中更新世晚期东亚大陆可能生存有不同的古人类成员。根据目前掌握的化石形态和年代证据,大约30万年前是中国更新世中期演化变化关键时间节点。  相似文献   
68.
目的探索一种从人中鼻甲分离培养嗅鞘细胞的方法并鉴定所获得的细胞。 方法通过手术获取人中鼻甲黏膜组织,随后进行两步消化并剥离黏膜上皮组织,得到体积较小的组织块,再进行组织块原代(传代)培养并加压筛选,最终得到双极或多极样细胞并对获得的细胞进行免疫荧光鉴定。上皮样细胞比例、S100β和p75阳性细胞比例用 ±s表示,组间比较采用独立样本t检验。 结果将不剥离上皮层与剥离上皮层培养的原代细胞中上皮样细胞的比例进行对比,发现上皮层组上皮样细胞比例为(92.23±3.93)%高于剥离上皮层组上皮样细胞的比例(77.63±2.97)%,差异具有统计学意义(t = 5.129,P = 0.007)。采用剥离上皮层法培养原代细胞,经过加压筛选的细胞呈现双极或多极样,符合嗅鞘细胞形态学特点。免疫荧光染色发现,S100β阳性细胞占总细胞量的(8.1±1.7)%,而p75阳性细胞占总细胞量的5%以下,达到国内外研究同等水平。 结论通过使用两步消化法和加压筛选联合的方法从人中鼻甲粘膜组织中成功获得了人中鼻甲嗅鞘细胞,相比较传统方法,细胞分离培养周期明显缩短。  相似文献   
69.
Following a recent chronostratigraphic revision of 17 fossiliferous sites hosting assemblages constituting local faunas of the Aurelian Mammal Age for peninsular Italy, we provide a re-structured biochronological framework and discuss the current validity and significance of the middle Pleistocene Faunal Units (FU) for this region. Contrasting with the previous model of a wide faunal renewal during Marine Isotope Stage (MIS) 9 (∼ 330 ka), the First Occurrences (FO) of several species of the Torre in Pietra FU are significantly backdated and referred to the Fontana Ranuccio FU (530–400 ka). We show that the faunal renewal was more gradual and occurred earlier than previously assumed. Many taxa that are typical of the late Pleistocene register their FO in the Fontana Ranuccio FU, latest Galerian, which is characterized by the almost total disappearance of Villafranchian taxa and by the persistence of typical Galerian taxa such as Dama clactoniana, Bison schoetensacki and Ursus deningeri, and by the FO of Stephanorhinus kirchbergensis, S. hemitoechus, Hippopotamus amphibius, Cervus elaphus eostepahnoceros, Ursus spelaeus, Canis lupus, and Vulpes vulpes. The next Torre in Pietra FU is characterized only by the FO of Megaloceros giganteus and Mustela putorius. However, we observe that MIS 9 marks the actual moment when the faunal assemblages of this region are represented only by those taxa characterizing the late middle Pleistocene and late Pleistocene. For this reason, we propose to still consider the Torre in Pietra (lower levels) local fauna as a conventional boundary for the Galerian-Aurelian transition. Finally, we remark that the strong faunal renewal in MIS 13, with five FOs, coincides with the temperate climatic conditions due to the absence of marked glacial periods that could have favored the FO and the subsequent spread of these taxa.  相似文献   
70.
《L'Anthropologie》2019,123(2):276-288
Previously the single bifacial tools found in different industrial variants of the Altai Middle Paleolithic (Sibiryachikha and Kara-bom) were not considered to be cultural markers that could be used to differentiate the technological/cultural variants, but rather a bright, but situational manifestation of the typological variability, especially in the case of the Sibiryachika assemblages. As a result of recent studies of Chagyrskaya Cave, the key-site of Sibiryachikha, it was found that all the bifaces are made using plano-convex technology. In the Chagyrskaya Cave assemblage all stages of bifacial production have been found: pre-forms, bifacial tools and tools made on the bifacial thinning flakes, accompanied by numerous bifacial thinning flakes and bifacial thinning chips. A preliminary study of the bifaces from the second Sibiryachikha site, Okladnikov Cave evidenced the use of the same plano-convex technology. On the other hand, in the Kara-bom complexes (Kara-Bom, Ust-Karakol-1, Anuy-3), all bifacial tools are made using bi-convex bifacial technology. Thus, the criteria for the technological distinction of bifacial production assume special importance as a cultural marker that allows the differentiation the Altai Middle Paleolithic technological variants. Taking into account the fact that Chagyrskaya Cave and Okladnikov Cave are associated only with Neanderthal remains, it can be assumed that bifacial plano-convexe technology in the Middle Paleolithic of Altai is linked to the appearance and existence of their population in the region.  相似文献   
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