نتایج جستجو برای: lowen
تعداد نتایج: 58 فیلتر نتایج به سال:
UNLABELLED The anamorphic genus Phoma was subdivided into nine sections based on morphological characters, and included teleomorphs in Didymella, Leptosphaeria, Pleospora and Mycosphaerella, suggesting the polyphyly of the genus. Recent molecular, phylogenetic studies led to the conclusion that Phoma should be restricted to Didymellaceae. The present study focuses on the taxonomy of excluded Ph...
Recent isolation of a novel swine-origin influenza A H3N2 variant virus [A(H3N2)v] from humans in the United States has raised concern over the pandemic potential of these viruses. The goal of this study was to compare the mammalian transmissibility of an A/Sw (H3N2) swine virus, which was isolated from a pig, to a genetically similar A(H3N2)v virus, isolated from a human, to determine if the h...
The effect of Gamma-irradiation on the electrical characteristics of GaAs diodes have been investigated using current-voltage (I-V) in the forward and reverse bias as a transient and permanent effects. The samples GaAs diodes were applied till 50 V in the reverse bias. The measured current was 1 nA before irradiation and was about 21 uA steady state photocurrent and 0.0065 Gy/sec dose rate afte...
This paper identifies the temporal sequence during which important cultural beliefs (food taboos) are transmitted to individuals in an oral society living in the Democratic Republic of Congo. Results are based on patterns of correlation in scaled measures of cultural similarity between same-household and same-clan members. In the first phase of the cultural life history (0-10 years-of-age), ind...
THISARTtcLE EXAMINES DISC:OURSES IN THE academic and information science literature that attempt to justify and promote, to criticize and resist, or to explain and interpret transformational social change. These discussions represent one face of a much larger wave of popular and technical discourse that has arisen in response to pressures put on currently dominant institutions by the processes ...
The 1918 “Spanish Influenza” was one of the three most devastating epidemics known to humankind. Today it is taken as a model of possible future pandemics by health authorities in many countries. This study reviews and assesses the qualitative and quantitative studies of the 1918 pandemic. It shows that the qualitative studies, while wide-ranging, are neither consistent nor comprehensive at the...
The control of circadian rhythms in the mammalian brain can be localized to a brain region known as the suprachiasmatic nucleus (SCN). The SCN consists of approximately 20,000 neurons whose firing rates oscillate on an approximately 24 hour rhythm. A large portion of these neurons are capable of maintaining a circadian rhythm in isolation in vitro. The firing rate of each neuron seems to be dri...
A key problem for neuronal information processing is the variability of spike trains, which is likely to constrain the encoding of sensory signals. We measured interspike interval variability (coefficient of variation) as well as spike count variability (Fano factor) in the metathoracic auditory system of locusts. We performed simultaneous intracellular recordings at the first three processing ...
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