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991.
Heloisa S.L. Coelho Gergia C. Atella Monica F. Moreira Ktia C. Gondim Hatisaburo Masuda 《Archives of insect biochemistry and physiology》1997,35(3):301-313
The density of lipophorin was determined in adult females of Rhodnius prolixus on different days after a meal. Several populations of lipophorins, differing in density but always in the range of HDL, were found in the hemolymph. The density of the major population was analyzed and a complex profile of density variation was found associated with the principal metabolic events in these insects digestion and oogenesis. During the initial three days after the blood meal, with the onset of the digestive process, the density of lipophorin decreased from 1.1185 g/l to 1.1095 g/l, associated with the transfer of lipids from midgut to the lipophorin particles. During the period of intense vitellogenesis and lipid uptake by the ovary, the lipophorin density started to increase and reached the value, 1.1322 g/l, and remained stable up to the end of oogenesis. As soon as the requirement of lipids to build up the oocytes ceased, the density of lipophorin decreased to its initial value associated with the transfer of lipids from fat body to lipophorin. Soon after the blood meal the midgut was the main source of lipids capable of replenishing the lipophorin particles, while the fat body assumed this function during the succeeding days and reached its maximum capacity around day 10, as estimated by the rate of lipid transfer. The principal lipids transferred were phospholipids and diacylglycerols. Except in the protein/lipid ratio no major changes were observed among different lipids isolated from lipophoin of different densities. Arch. Insect Biochem. Physiol. 35:301-313, 1997.© 1997 Wiley-Liss, Inc. 相似文献
992.
993.
994.
Ricardo Alcántara-de la Cruz Douglas Silva Parreira Francisco Andreas Rodríguez Dimaté Lorena Duarte Batista Rafael Coelho Ribeiro José Cola Zanuncio 《Journal of Asia》2021,24(2):64-67
Bioactivity of nine essential oils (EOs) was studied on Anagasta kuehniella eggs in relation to the longevity of females, parasitism and emergence rates and sex ratio in the generations parental, F1 and F2 of Trichogramma galloi in comparison to a trade formulation of Azadirachta indica. There was no F1 and F2 progeny with Zingiber officinale being the most harmful. The greatest reductions in the parasitism rates (57, 43 and 28%) in the parental generation was caused by Allium sativum, Carapa guianensis and A. indica, respectively. In addition, A. sativum reduced the longevity (4.7 days) in the parental generation and emergence (33%) of F1. Tested EOs did not affect the sex ratio in the generations F1 and F2 and emergence in the F2. Allium sativum and Z. officinale were non-selective to T. galloi; while A. indica, C. guianensis and P. nigrum oils may compromise the progeny; therefore, their use must be avoided. Citrus sinensis, Mentha piperita, Origanum vulgare, Syzygium aromaticum and Thymus vulgare were selective to T. galloi, and these EOs are promising for IPM programs. 相似文献
995.
996.
Onice Teresinha Dall’Oglio Rafael Coelho Ribeiro Francisco de Souza Ramalho Flávio Lemes Fernandes Carlos Frederico Wilcken Sebasti?o Louren?o de Assis Júnior Rosa Angélica Plata Rueda José Eduardo Serr?o José Cola Zanuncio 《PloS one》2016,11(3)
The understory in forest plantations can increase richness and diversity of natural enemies due to greater plant species richness. The objective of this study was to test the hypothesis that the presence of the understory and climatic season in the region (wet or dry) can increase the richness and abundance of Hymenoptera parasitoids in Eucalyptus plantations, in the municipality of Belo Oriente, Minas Gerais State, Brazil. In each eucalyptus cultivation (five areas of cultivation) ten Malaise traps were installed, five with the understory and five without it. A total of 9,639 individuals from 30 families of the Hymenoptera parasitoids were collected, with Mymaridae, Scelionidae, Encyrtidae and Braconidae being the most collected ones with 4,934, 1,212, 619 and 612 individuals, respectively. The eucalyptus stands with and without the understory showed percentage of individuals 45.65% and 54.35% collected, respectively. The understory did not represent a positive effect on the overall abundance of the individuals Hymenoptera in the E. grandis stands, but rather exerted a positive effect on the specific families of the parasitoids of this order. 相似文献
997.
John H. Relethford Anthony M. Coelho Wendy A. Lawrence 《American journal of primatology》1982,2(2):205-209
Two regression methods are proposed for estimating age in nonhuman primates from deciduous dental eruption data. The first method consists of step-wise multiple regression using dental eruption state (present/absent) of each tooth as independent variables. The second method uses the total number of teeth erupted as an independent variable in an exponential model. We applied both methods to a sample of 175 well nourished infant and juvenile baboons (Papio sp.), housed in an outdoor breeding corral, and ranging in age from birth to 763 days. From this sample, 129 animals were used to compute the regression formulae, and 46 animals were used for cross validation. Both models show good overall fits and high predictive accuracy with the independent cross validation sample. 相似文献
998.
999.
Igor P. Coelho Sara J. Collins Eduardo M. Santos Júnior Mônica M. Valença-Montenegro Leandro Jerusalinsky André C. Alonso 《American journal of primatology》2020,82(5):e23126
Effective management of threatened species requires accurate population size estimation and monitoring. However, reliable population size estimates are lacking for many endangered species. The critically endangered blond titi monkey (Callicebus barbarabrownae) is an endemic primate of the Caatinga biome in Northeastern Brazil. A previous assessment based on presence-only data estimated a minimum population size of 260 mature individuals in 2,636 km2, and studies based on visual records suggested very low local relative abundance. However, this cryptic species is known to be difficult to visually detect. We played back recordings of C. barbarabrownae loud calls to count the number of responding groups in 34 sampling sites during 9 consecutive days in a 221-km2 study area. Repeated group counts at sites were used in N-mixture models, which account for imperfect detection, to estimate the number of groups in relation to dry forest area and distance to villages. We estimated a total of 91 groups in the study area. Considering the mean number of adults per group as three, we estimated a population of 273 adult individuals, resulting in a density of 2.3 individuals/km2 in the dry forest habitat. Detection probability was four times higher for surveys conducted between sunrise to midmorning than between midmorning to sunset. We also found that C. barbarabrownae abundance increases with increasing dry forest area and increasing distance to the nearest village, indicating the need to promote dry forest restoration in the Caatinga. As our results suggest a larger population of C. barbarabrownae than had been previously estimated for its entire distribution, our results suggest a need for similar assessments in other areas to reliably estimate the total population size. This study demonstrates how playback surveys coupled with N-mixture models can be used to estimate population sizes of acoustically-responsive primates, and thus contribute to more effective conservation management. 相似文献
1000.
Sebastian A Baldauf Theo CM Bakker Fabian Herder Harald Kullmann Timo Thünken 《BMC evolutionary biology》2010,10(1):301