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Javad Tavakkoly Bazzaz Mahnaz Shojapoor Habibollah Nazem Parvin Amiri Hossein Fakhrzadeh Ramin Heshmat Maryam Parvizi Shirin Hasani Ranjbar Mahsa M. Amoli 《Molecular biology reports》2010,37(1):105-109
Methylenetetrahydrofolate reductase (MTHFR) polymorphism may play an important role in the pathophysiology of obesity and
diabetes accompanied by obesity due to its influence on plasma homocysteine levels. There are significant and sometimes very
strong relationship between levels of homocysteine and several multi-system diseases including CHD and CVA. To examine the
association between MTHFR gene C677T polymorphism in diabetes and obesity with serum homocysteine levels. A total of 682 subjects
were recruited in four groups (Normal, obese, diabetic and obese and diabetics). MTHFR gene C677T polymorphism was detected
using PCR-RFLP technique. Serum homocysteine levels were measured using HPLC. There was a significant increase in the mean
serum homocysteine levels in subjects carrying TT genotype (34.6 ± 26.5) compared to subjects carrying CC (15.1 ± 8) or CT
genotype (16.4 ± 7.8) (P < 0.000). We found no significant differences for MTHFR allele and genotype frequencies between different groups. Our data
have confirmed the association between serum homocysteine levels and MTHFR C677T genotype reported in other populations. 相似文献
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Javad Zamani Mohammad Ali Hajabbasi Mohammad Reza Mosaddeghi Mohsen Soleimani Mehran Shirvani Rainer Schulin 《Soil & Sediment Contamination》2018,27(1):13-30
Plant-based methods such as rhizodegradation are very promising for the remediation of petroleum-contaminated soils. Associations of plants with endophytes can further enhance their phytoremediation potential. In this study, a rhizobox experiment was conducted to investigate whether inoculation with the root-colonizing fungus Piriformospora indica could further enhance the degradation of petroleum hydrocarbons in the root zone of maize (Zea mays L.). The rhizoboxes were subdivided into compartments in accordance with distance from the plants. After filling the boxes with soil from a petroleum-contaminated site, seedlings that had either been inoculated with P. indica or not were grown in the middle compartments of the rhizoboxes and grown for 64 days. A plant-free treatment was included for control. The presence of roots strongly increased the counts of total and petroleum-degrading soil bacteria, respiration, dehydrogenase activity, water-soluble phenols and petroleum degradation. All these effects were also found in the soil adjacent to the middle compartments of the rhizoboxes, but strongly decreased further away from it. Inoculation with P. indica further enhanced all the recorded parameters without changing the spatial pattern of the effects. Inoculated plants also produced around 40% more root and shoot biomass than noninoculated plants and had greener leaves. Together, the results indicate that the treatment effects on the recorded soil microbial and biochemical parameters including petroleum hydrocarbon degradation were primarily due to increased root exudation. Irrespectively of this, they show that maize can be used to accelerate the rhizodegradation of petroleum hydrocarbons in soil and that inoculation with P. indica can substantially enhance the phytoremediation performance of maize. 相似文献
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The demands for wearable technologies continue to grow and novel approaches for powering these devices are being enabled by the advent of new electromaterials and novel fabrication strategies. Herein, a novel approach is reported to develop superelastic wet‐spun hybrid carbon nanotube graphene fibers followed by electrodeposition of polyaniline to achieve a high‐performance fiber‐based supercapacitor. It is found that the specific capacitance of hybrid carbon nanotube (CNT)/graphene fiber is enhanced up to ≈39% using a graphene to CNT fiber ratio of 1:3. Fabrication of spring‐like coiled fiber coated with an elastic polymer shows an extraordinary elasticity capable of 800% strain while affording a specific capacitance of ≈138 F g?1. The elastic rubber coating enables extreme stretchability and enabling cycles with up to 500% strain for thousands of cycles with no significant change in its performance. Multiple supercapacitors can be easily assembled in series or parallel to meet specific energy and power needs. 相似文献
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Badab-e Surt spring is a travertine spring that has low to moderate levels of salt, so it is a good model for isolating moderately halophilic bacteria and investigating the relationship between microbe and environment. For isolating bacterial strains, water and sediment samples were collected from different springheads of the Badab-e Surt spring. Among the 171 bacterial isolates, 110 strains were halophiles. According to comparative partial 16S rRNA sequence analysis, the selected halophilic gram-positive and gram-negative strains were identified as members of the genera: Roseovarius, Labrenzia, Erythrobacter, Erythromicrobium, Massilia, Marinobacter, Halomonas, Shewanella, Pseudomonas, Flavobacterium, Bacillus, Brevibacterium, Staphylococcus, Microbacterium, Kocuria, and Streptomyces. To investigate mineralization, potential strains were screened by the culturing method, and then analyzed with a polarizing and scanning microscope. Five strains, Bss-11a, Bss-3, Bsw-1c1, Bsw-28d, and Bsw-39b, had potential for the mineralization of calcite that very closely resembled species Bacillus cohenii DSM 6307T, Labrenzia aggregate IAM 12614T, Bacillus safensis FO-036bT, Marinobacter flavimaris SW-145T, and Marinobater adhaerens HP15T, respectively. 相似文献
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Chondrogenic differentiation of human scalp adipose‐derived stem cells in Polycaprolactone scaffold and using Freeze Thaw Freeze method 下载免费PDF全文