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تعداد نتایج: 366815 فیلتر نتایج به سال:
Purpose: The present study aimed to investigate the effect of voluntary and electrically stimulated quadriceps muscle fatigue on postural control. Methods: Sixteen healthy young males participated in this quasi-experimental study. All subjects performed two fatiguing exercises with equal intensity of isometric maximal voluntary contraction: Voluntary (VOL) and Electrical Stimulation (ES). The ...
Kurzfassung. Der Einsatz von 3D-Ultraschall ist für zahlreiche medizinische Applikationen interessant. Ein 3D-Ultraschall Datensatz kann aus 2D-Schichtbildern rekonstruiert werden, wenn deren Positionen im Raum bekannt ist. Mittels eines Trackingsystems kann die Position eines Schallkopfes im Raum verfolgt werden. Die Beziehung von Bildebene und Schallkopf muss durch eine Kalibrierung bestimmt ...
this paper presents future trends of urban wastes and their impacts on the environment of african cities using plausible mitigation scenarios. to accomplish this, an integrated dynamic model for urban waste flows was developed, tested, calibrated and validated. its parameter sensitivity was analyzed. using population projection up to 2052 with different levels of technological implementation, p...
We have developed a large-scale, expression-based gene trap strategy to perform genome-wide functional analysis of the murine hematopoietic and vascular systems. Using two different gene trap vectors, we have isolated embryonic stem (ES) cell clones containing lacZ reporter gene insertions in genes expressed in blood island and vascular cells, muscle, stromal cells, and unknown cell types. Of 7...
ACS Announcements ● Celebrate Earth Day 2006 with ACS Publications: "Dig into" selected research on soil and plant science from Environmental Science & Technology, the Journal of Agricultural and Food Chemistry, the Journal of Natural Products, and the Journal of Proteome Research. ● Most-Accessed Articles for ES&T in 2005. ● ES&T is #1 in total citations (34,474) and #1 in articles published (...
BACKGROUND The aim of this study was to compare superoxide dismutase (SOD) activity in Fasciola hepatica and Fasciola gigantica parasites. MATERIALS F. gigantica and F. hepatica helminths were collected from abattoir and cultured in buffer media for 4 h at 37 °C. Excretory-Secretory (ES) products were collected, centrifuged and stored at -20(°)C. E-S protein concentration was measured by Brad...
Evolution Strategies (ES) are a class of Evolutionary Algorithms based on Gaussian mutation and deterministic selection. Gaussian mutation captures pair-wise dependencies between the variables through a covariance matrix. Covariance Matrix Adaptation (CMA) is a method to update this covariance matrix. In this paper, the CMA-ES, which has found many applications in solving continuous optimizatio...
The stability of N-[2-(4-o-fluorophenylpiperazin-1-yl)ethyl]-2,5-dimethyl-1-phenylpyrrole-3,4-dicarboximide (PDI; a derivative with an analgesic activity) was studied in order to investigate its degradation mechanism and identify its degradation products in aqueous-organic solutions. The stability of PDI and its two degradation products (A and B) was performed with an HPLC method: (LiChrospher ...
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