نتایج جستجو برای: fre quency domain
تعداد نتایج: 406373 فیلتر نتایج به سال:
We describe a setup, in the Animal Park of Planckendael (Belgium), for an integrated study of terrestrial locomotion in bonobos (Pan paniscus). The setup consists of two orthogonal video cameras (50 Hz), and of three synchronized measurement units (250 Hz) incorporated in the floor of the walkway. Each unit consists of a force plate and a functionally coupled highresolution pressure-sensitive m...
We recently established transfectants of MCF-7 human breast cancer cells with fibroblast growth factor 4 (Jgf-4) that showed rapid growth and spontaneous metastasis in ovariectomized and tamoxifen-treated nude mice. To establish a spontaneous metastatic model of human breast cancer cells in nude mice with a sensitive marker for detection of micrometastasis, the transfection offgf-4 was combined...
The present time is characterized by the greate acivements of the computer technologies structures memory fre quency and methods of the calculations and wide dif ferentiation of the neurochips One priority of the future stage of the civilization will be the Personal orientness for the diffrent forms the User s activity business cul ture medicine etc These possibilities allow to realize the impo...
AbstractIn this paper we describe the design of microwave low pass filter by using micro strip layout. Most of the communication system has an RF front end that performs signal processing with RF filters. Micro strip filters provides a low cost means for this. Filters play an important role in microwave applications. Microstrip filter is a two port network used to control the fre-quency respons...
Caffeine enhancement of chemical carcinogen-induced transformation of cultured Syrian hamster cells.
depends upon: (a) concentration of caffeine; (fc) time of addition of caffeine; (c) length of exposure; and (d) carcinogen used. The addition of caffeine to cells treated 1 hr previously with carcinogen resulted in the potentiation of toxicity. Toxicity increased with caffeine concentration and length of exposure to carcinogen-containing medium. With 50 ¿ig caffeine per ml medium for 2 days cl...
The designing of a continuous wave radar radar (CW) intended for remote counting of traf fic (remote traffic counter) and speed measurement of transport means with the help of high speed trajectories in the radar beam for long range transferring of these data is considered. It was experimen tally shown that, for recording the current number of transport means and measuring the speed of each of ...
[1] Biomass burning is an important global phenomenon impacting atmospheric composition. Application of satellite based measures of fire radiative energy (FRE) has been shown to be effective for estimating biomass consumed, which can then be used to estimate gas and aerosol emissions. However, application of FRE has been limited in both temporal and spatial scale. In this paper we offer a metho...
The frequency of recombinational exchanges (FRE) that disrupt co-inheritance of transferred donor markers in Escherichia coli Hfr by F(-) crosses differs by up to a factor of two depending on physiological factors and culture conditions. Under standard conditions we found FRE to be 5.01 +/- 0.43 exchanges per 100-min units of DNA length for wild-type strains of the AB1157 line. Using these cond...
background: despite advances in the medical care of renal transplant recipients which have led to an improvement in allograft survival, renal allograft rejection is still a major ob-stacle to successful organ transplantation. understanding the mechanisms contributing to allograft rejection will be of great importance for the development of efficient antirejection strategies. objective: the aim ...
Aspiration of meconium produces a syndrome (Meconium Aspiration Syndrome MAS) characterized by hypoxia, hypercapnia, and acidosis. Perinatal hypoxia, acute airway obstruction, pulmonary inflammation, pulmonary vasoconstriction, pulm onary hypertension, and surfactant inactivation all play a role in the pathogenesis of MAS. Most aspiration of meconium probably occurs before birth. Following asp...
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