نتایج جستجو برای: isolation techniques
تعداد نتایج: 750748 فیلتر نتایج به سال:
Failure reproduction and fault isolation are key activities in the post-release phase. As we develop techniques to exploit field data to accelerate and improve these activities, we must be aware of the impact of field data integrity. This work scopes and provides details about a study we are conducting to quantify the impact of users’ contribution and filtering processes in the integrity of fie...
during 2009-10, real time rt-pcr and conventional rt-pcr techniques used for detecting btvs rna in 310 blood samples. for real time and gel based rt-pcr segment-1 and segment-10 selected as conserve genes to search any btv strains. using these methods, 58 (%18.7) and 14 (%4.5) positive samples were detected among the clinically suspected sheep. sensitivity of both molecular techniques evalua...
In this paper we discuss the application of our recently de-veloped nonlinear analytical redundancy (NLAR) fault detection techniqueto a two-degree of freedom robot manipulator. NLAR extends the tradi-tional linear AR technique to derive the maximum possible number of in-dependent model-based fault detection tests into the continuous nonlineardomain. The ability to handle no...
Much evidence has shown that postzygotic reproductive isolation (hybrid inviability or sterility) evolves by the accumulation of interlocus incompatibilities between diverging populations. Although in theory only a single pair of incompatible loci is needed to isolate species, empirical work in Drosophila has revealed that hybrid fertility problems often are highly polygenic and complex. In thi...
Understanding the genetic basis of reproductive isolation between recently diverged species is a central problem in evolutionary genetics. Here, I present analyses of the genetic architecture underlying hybrid male sterility and segregation distortion between the Bogota and USA subspecies of Drosophila pseudoobscura. Previously, a single gene, Overdrive (Ovd), was shown to be necessary but not ...
This work presents a design and verification of low power and high performance router by using dynamic power reduction technique i.e. Clock gating and Operand isolation. The power consumption of the presented router is significantly lower than that of a router with unnecessary switching activities. The clock gating and operand isolation techniques allows a variety of features such as easily con...
Postzygotic reproductive isolation (RI) plays an important role in speciation. According to the stage at which it functions and the symptoms it displays, postzygotic RI can be called hybrid inviability, hybrid weakness or necrosis, hybrid sterility, or hybrid breakdown. In this review, we summarized new findings about hybrid incompatibilities in plants, most of which are from studies on Arabido...
Large-scale data centers leverage virtualization technology to achieve excellent resource utilization, scalability and high availability. Although virtualization technology has the advantages such as fault isolation, environmental isolation and security isolation, current virtualization techniques do not have effective performance isolation among virtual machines. The hidden resource competitio...
To investigate the time course of speciation, we gathered literature data on 119 pairs of closely related Drosophila species with known genetic distances, mating discrimination, strength of hybrid sterility and inviability, and geographic ranges. Because genetic distance is correlated with divergence time, these data provide a cross-section of taxa at different stages of speciation. Mating disc...
Hybrid incompatibility resulting from deleterious gene combinations is thought to be an important step toward reproductive isolation and speciation. Here, we demonstrate involvement of a silent epiallele in hybrid incompatibility. In Arabidopsis thaliana accession Cvi-0, one of the two copies of a duplicated histidine biosynthesis gene, HISN6A, is mutated, making HISN6B essential. In contrast, ...
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