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201.
Shefali Gupta Tapan Kumar Subodh Verma Chellapilla Bharadwaj Sabhyata Bhatia 《Molecular biology reports》2015,42(11):1571-1580
202.
This paper investigates scheduling strategies for divisible jobs/loads originating from multiple sites in hierarchical networks
with heterogeneous processors and communication channels. In contrast, most previous work in the divisible load scheduling
theory (DLT) literature mainly addressed scheduling problems with loads originating from a single processor. This is one of
the first works that address scheduling multiple loads from multiple sites in the DLT paradigm. In addition, scheduling multi-site
jobs is common in Grids and other general distributed systems for resource sharing and coordination. An efficient static scheduling
algorithm PPDD (Processor-set Partitioning and Data Distribution Algorithm) is proposed to near-optimally distribute multiple
loads among all processors so that the overall processing time of all jobs is minimized. The PPDD algorithm is applied to
two cases: when processors are equipped with front-ends and when they are not equipped with front-ends. The application of
the algorithm to homogeneous systems is also studied. Further, several important properties exhibited by the PPDD algorithm
are proven through lemmas. To implement the PPDD algorithm, we propose a communication strategy. In addition, we compare the
performance of the PPDD algorithm with a Round-robin Scheduling Algorithm (RSA), which is most commonly used. Extensive case
studies through numerical analysis have been conducted to verify the theoretical findings. 相似文献
203.
Nirmali Gogoi Muhammad Farooq Sharmistha Barthakur Bhaswatee Baroowa Sreyashi Paul Nandita Bharadwaj Sunkar Ramanjulu 《Journal of Plant Biology》2018,61(5):265-291
Temperature stress (cold, heat) during reproductive development is one of the serious constraints to the productivity of grain legumes as their cultivation is expanding to warmer environments and temperature variability is increasing due to climate change. Grain legumes exposed to temperature below 10-15°C or above 30°C show flower abortion, pollen and ovule infertility, impaired fertilization, and reduced seed filling, leading to substantial reduction in grain yield. For managing these effects of temperature extremes, it is important to improve the resistance of grain legumes by using improved breeding and genetic engineering tools. In this review article, the impact of both high and low temperature stress on different phases of the reproductive stage, from meiosis to grain filling, and the sensitivity of different reproductive organs to temperature extremes are discussed. The review also covers the management options to improve resistance to temperature stress in grain legumes. Furthermore, innovative breeding, genetic and molecular strategies in grain legumes against temperature stress are also discussed. 相似文献
204.
205.
Krishna Kumar Veeravalli Venkata Ramesh Dasari Andrew J. Tsung Dzung H. Dinh Meena Gujrati Dan Fassett Jasti S. Rao 《Neurochemical research》2009,34(7):1183-1194
We investigated the involvement of tPA after SCI in rats and effect of treatment with human umbilical cord blood derived stem
cells. tPA expression and activity were determined in vivo after SCI in rats and in vitro in rat embryonic spinal neurons
in response to injury with staurosporine, hydrogen peroxide and glutamate. The activity and/or expression of tPA increased
after SCI and reached peak levels on day 21 post-SCI. Notably, the tPA mRNA activity was upregulated by 310-fold compared
to controls on day 21 post-SCI. As expected, MBP expression is minimal at the time of peak tPA activity and vice versa. Implantation
of hUCB after SCI resulted in the downregulation of elevated tPA activity/expression in vivo in rats as well as in vitro in
spinal neurons. Our results demonstrated the involvement of tPA in the secondary pathogenesis after SCI as well as the therapeutic
potential of hUCB. 相似文献
206.
Sony Jacob Victorio Pidlaoan Jaspreet Singh Aditya Bharadwaj Mehul B Patel Antonio Carrillo 《Indian pacing and electrophysiology journal》2010,10(1):21-39
Defibrillation threshold (DFT) testing has traditionally been an integral part of implantable cardioverter defibrillator (ICD) implantation. With the increasing number of patients receiving ICDs, physicians are encountering high DFT more often than before. Tackling the problem of high DFT, warrants an in-depth understanding of the science of defibrillation including the key electrophysiological concepts and the underlying molecular mechanisms. Numerous factors have been implicated in the causation of high DFT. Due consideration to the past medical history, pharmacotherapy, laboratory data and cardiac imaging, help in assessing the pre-procedural risk for occurrence of high DFT. Drugs, procedural changes, type and location of ICD lead system are some of the key players in predicting DFT during implantation. In the event of encountering an unacceptably high DFT, we recommend to follow a step-wise algorithm. Ruling out procedural complications like pneumothorax and tamponade is imperative before embarking on a search for potentially reversible clinical or metabolic derangements. Finally, if these attempts fail, the electrophysiologist must choose from a wide range of options for device adjustment and system modification. Although this review article is meant to be a treatise on the science, signs and solutions for high DFT, it is bound by limitations of space and scope of the article. 相似文献
207.
Padala Abdul NishadAnupkumar Bhaskarapillai Sankaralingam Velmurugan Sevilimedu Veeravalli Narasimhan 《Carbohydrate polymers》2012,87(4):2690-2696
The selectivity of chitosan has been modified through metal ion imprinting technique for its potential application in nuclear industry. Considerable reduction in radioactive waste volume, generated during the chemical decontamination of nuclear power plants, can be achieved through the selective removal of the radionuclides. In this context, a Co(II) imprinted chitosan was synthesized using epichlorohydrin as the crosslinker. The selective removal of Co(II) in presence of Fe(II), which is the major non-radioactive ion present in excess during decontamination, was studied. The imprinted chitosan showed selective sorption of Co(II) over Fe(II), while the raw chitosan was selective to Fe(II) over Co(II). The imprinted chitosan was found to retain the enhanced selectivity towards Co(II) under various solution conditions, including typical nuclear reactor decontamination formulations containing strong complexants. The highest uptake by the imprinted chitosan, with maximum selectivity for Co(II) over Fe(II), was obtained in citrate medium at pH 4.8. 相似文献