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541.
Aguiar LM Ludwig G Svoboda WK Teixeira GM Hilst CL Shiozawa MM Malanski LS Mello AM Navarro IT Passos FC 《American journal of primatology》2007,69(2):241-247
Howlers (genus Alouatta) are widely captured with the use of anesthetic projectiles; however, no capture protocol involving the use of traps has been described to date. In the present study we describe the first efficient capture program for black and gold howlers (Alouatta caraya) using traps, which was implemented on the islands of the upper Paraná River in southern Brazil. We constructed two trap models with either manual or automatic activation (trap A with two entrances and guillotine-type doors; trap B with one entrance and a guillotine-type door). The traps were suspended in the canopy by means of vertical climbing techniques, and were baited regularly and abundantly with bananas and mangoes. We captured 70 howlers (86% using manual activation and 14% using automatic activation) on four different islands. We restrained 41 of these animals and measured their body mass, which averaged 5.30 kg+/-1.79. Given our results, we suggest that the system described in the present study represents an alternative capture program for howlers in areas that have low food diversity and no other mammal species that will compete for the bait, as has been observed in riparian environments, islands, and forest fragments. 相似文献
542.
Rocha LL de Aguiar Cordeiro R Cavalcante RM do Nascimento RF Martins SC Santaella ST Melo VM 《Mycopathologia》2007,164(4):183-188
This study investigated the aerobic degradation of phenol by yeast strains isolated from an oil refinery wastewater from the
Northeast of Brazil. The samples displayed low fungal diversity, as only yeast colonies were detected on Sabouraud dextrose
agar containing chloramphenicol 0.05% (w/v). Among the isolates, three yeast strains were selected to be evaluated for their
potential for degrading high phenol concentrations. These species were identified through morphological and biochemical characteristics
as Candida tropicalis, C. rugosa, and Pichia membranaefaciens. Although the strains were able to degrade the phenol concentration present in the wastewater, which was 7 mg l−1, only C. tropicalis was capable of growing at high concentrations of phenol such as 500 mg l−1 and 1,000 mg l−1 in a mineral medium containing this pollutant as the only carbon source. C. rugosa and P. membranaefaciens were inhibited in the presence of 500 mg l−1 of phenol. However, a longer incubation time was needed for C. tropicalis strain to degrade 1,000 mg l−1 of phenol compared to the time required to degrade 500 mg l−1. Moreover, the strain released a significant amount of polysaccharide biosurfactant in the medium probably to minimize the
toxic effect of the high phenol concentration. When challenged with 1,500 and 2,000 mg l−1 of phenol, C. tropicalis was unable to grow at the tested conditions. The results indicate that this strain of C. tropicalis can be considered both a good phenol-degrader and biosurfactant-producer. Application of this strain might be useful in bioremediation
activities or treatment of phenol-polluted wastewater. 相似文献
543.
Omega-3 effects on electrocorticographic patterns of adult Wistar rats exposed to ionizing radiation
H.G.I.F. Lima I.M.S.S. Lopes A.P.B. Oliveira E.V.L. Costa L.A.A. Aguiar B.P.A. Lindoso M.C.O. Silva J.E.S. Silva R.A. Nogueira 《Biochemistry and Biophysics Reports》2021
This study aimed to assess the effect of supplementation with omega-3 in Wistar rats exposed to ionizing radiation in a dose of 18 Gy on the cortical electrical activity, using mathematical methods such as the power spectrum (PS) and the detrended fluctuation analysis (DFA) in the evaluation of the electrocorticogram (ECoG) record. The PS analysis showed that in non-irradiated animals but supplemented with omega-3 there was a decrease in the power of the beta rhythm, while the DFA applied to different frequency ranges of the ECoG showed a significant increase in the long-range correlation only for the theta wave when compared with non-supplemented animals. In the evaluation of the radiation effect through the PS, an increase in the power of the theta rhythm was observed in both groups (non-supplemented and supplemented animals) only when they were evaluated one week after irradiation. The DFA method also showed difference in this wave. The PS and DFA methods applied to the ECoG record allowed a quantitative analysis of the cortical electrical activity in rats in response to the omega-3 effects, ionizing radiation, or both. 相似文献
544.
Garbinato Cristiane Lima-Rezende Cássia Alves Schneider Sabrina Ester Pedroso Jefferson dos Santos Aline E. Petry Fernanda Aguiar Gean Pablo S. Müller Liz Girardi Lanza Marcelo Piato Angelo Vladimir Oliveira J. Siebel Anna Maria 《Neurochemical research》2021,46(11):3025-3034
Neurochemical Research - Epilepsy affects around 50 million people worldwide, and an important number of patients (30%) fail to respond to any available antiepileptic drug. Previous studies have... 相似文献
545.
Gustavo Henrique Soares Guedes Iracema David Gomes Aparecida Alves do Nascimento Fernanda Silva de Aguiar Francisco Gerson Araújo 《Journal of fish biology》2021,98(3):743-755
The reproductive strategy of the non-native predator cichlid Cichla kelberi was determined to explain its success after more than 60 years of being introduced into an isolated reservoir in southeastern Brazil. This was one of the first-known translocations of the genus Cichla out of its natural range. Macro- and microscopy characteristics of the gonadal development stages and the maturation phases, along with the reproductive features (size at first maturation size, gonado-somatic index and sex ratio), were described. It was hypothesized that the stable conditions of the reservoir, with low connectivity, weakly defined spatial gradient and slight seasonal changes in environmental variables, favour the equilibrium strategy that enables predators to have high offspring survivorship because of great parental investment in individual progeny. Sex ratio was well balanced, with males and females reaching first maturity between 30.0 and 28.6 cm total length (LT), respectively. The stages of oocyte (primary and secondary growth, vitellogenic and atresia) and spermatocyte (spermatogonia, spermatocytes, spermatids and spermatozoa) development were identified. Five phases of gonadal development (immature, developing, spawning capable, regressing and regenerating) were described for both sexes. A long reproductive season was found, with spawning peaks in August/September and, to a lesser extent, in April/May. Parental care and spawns in parcels (batch spawns) corroborated the raised equilibrium strategy that was effective in this isolated reservoir. This species developed reproductive mechanisms that fit to different environmental conditions, with multiple spawning being associated with lentic environments and asynchronous development of oocytes, which are released over long periods. The reproductive plasticity in reservoirs may be one of the main factors inherent to the successful of colonization and establishment of the peacock bass in the environments in which they were introduced. 相似文献
546.
Piazza Maria-Victoria Oñatibia Gastón R. Aguiar Martín R. Chaneton Enrique J. 《Plant and Soil》2021,460(1-2):483-495
Plant and Soil - It is well known that plant root-microbe interactions are critical drivers of ecosystem processes such as soil carbon and nutrient cycling; however, considerable uncertainties... 相似文献
547.
Ogaki Mayara Baptistucci Câmara Paulo Eduardo Aguiar Saraiva Pinto Otávio Henrique Bezerra Lirio Juan Manuel Coria Silvia H. Vieira Rosemary Carvalho-Silva Micheline Convey Peter Rosa Carlos Augusto Rosa Luiz Henrique 《Extremophiles : life under extreme conditions》2021,25(3):257-265
Extremophiles - We assessed the diversity of fungal DNA present in sediments of three lakes on Vega Island, north-east Antarctic Peninsula using metabarcoding through high-throughput sequencing... 相似文献
548.
Different anthropogenic sources of metals can result from agricultural, industrial, military, mining and urban activities that contribute to environmental pollution. Plants can be grown for phytoremediation to remove or stabilize contaminants in water and soil. Copper (Cu), manganese (Mn) and zinc (Zn) are trace essential metals for plants, although their role in homeostasis in plants must be strictly regulated to avoid toxicity. In this review, we summarize the processes involved in the bioavailability, uptake, transport and storage of Cu, Mn and Zn in plants. The efficiency of phytoremediation depends on several factors including metal bioavailability and plant uptake, translocation and tolerance mechanisms. Soil parameters, such as clay fraction, organic matter content, oxidation state, pH, redox potential, aeration, and the presence of specific organisms, play fundamental roles in the uptake of trace essential metals. Key processes in the metal homeostasis network in plants have been identified. Membrane transporters involved in the acquisition, transport and storage of trace essential metals are reviewed. Recent advances in understanding the biochemical and molecular mechanisms of Cu, Mn and Zn hyperaccumulation are described. The use of plant-bacteria associations, plant-fungi associations and genetic engineering has opened a new range of opportunities to improve the efficiency of phytoremediation. The main directions for future research are proposed from the investigation of published results. 相似文献
549.
550.
Carla?J?Aguiar Jo?o?A?Rocha-Franco Pedro?A?Sousa Anderson?K?Santos Marina?Ladeira Cibele?Rocha-Resende Luiz?O?Ladeira Rodrigo?R?Resende Fernando?A?Botoni Marcos?Barrouin Melo Cristiano?X?Lima José?M?Carballido Thiago?M?Cunha Gustavo?B?Menezes Silvia?Guatimosim M?Fatima?LeiteEmail author 《Cell communication and signaling : CCS》2014,12(1):78