نتایج جستجو برای: fre quency domain
تعداد نتایج: 406373 فیلتر نتایج به سال:
An important aspect of the studies undertaken in bioelectromagnetism relates to the choice of exposure facility. The characteristics of a real electromagnetic environment are far more complex compared to the one plane wave irradiation set-up used in the majority of bioelectromagnetic studies. Moreover, biological requirements should represent the starting point in the design of an in vitro expo...
For quantitative study of the sort of random drift due to inbreeding it is de sirable to experiment with segregating genotypes that can be classified without risk of error and with populations that are all of a very small definitely known size. With respect to the first condition, it is much the most satisfactory if all segregat ing genotypes can be distinguished ac curately. This, however, lim...
The study of metaphase chromosomes of ascites tumors has shown that, for a given strain of tumor, there is found a characteristic modal chromosome number (referred to as «),which frequently lies near that of the diploid number for the host organism (3). Other tumors have modal numbers in the tetraploid range, this condition appearing to enhance the ability of the tumor cells to grow in host st...
The purpose of this study was to quantify postimplantation migration of percutaneously implanted cylindrical gold seeds ("seeds") and platinum endovascular embolization coils ("coils") for tumor tracking in pulmonary stereotactic ablative radiotherapy (SABR). We retrospectively analyzed the migration of markers in 32 consecutive patients with computed tomography scans postimplantation and at si...
Aim. The objective was to evaluate the synergistic effects of fermented rice extracts (FRe) on the laxative and probiotic properties of yoghurt in rats with loperamide-induced constipation. Methods. After constipation induction, yoghurt containing FRe (BFRe; 0.05%, 0.1%, or 1%) was administered orally once per day for 6 days. Results. Loperamide treatment caused marked decreases in fecal pellet...
This work examines a neural network model of a cortical mod ule where neurons are organized on a dimensional sheet and are connected with higher probability to their spatial neighbors Moti vated by recent ndings that cortical neurons have a resonant peak in their impedance magnitude function we present a frequency spatial transformation scheme that is schematically described as follows An exter...
Our investigations (5,6) concerned with quanti tative data on problems of growth, regeneration, and the differential response of normal tissue to changes induced by x-radiation in the testes of mice are now augmented by further data on testes, on germinal cells in the ovary, and on mouse tumors. These studies confirm the belief that there is more than one kind of resting spermatogonia and that ...
Image quality is a key issue in radiology, particularly in a clinical setting where it is important to achieve accurate diagnoses while minimizing radiation dose. Some computed tomography (CT) manufacturers have introduced algorithms that claim significant dose reduction. In this study, we assessed CT image quality produced by two reconstruction algorithms provided with GE Healthcare's Discover...
Four allelic variants of glutathione (GSH) S-transferase Pl-1 (hGSTPl-1) that differ in their structures at amino acid(s) in position(s) 104 and/or 113 are known to exist in human populations. However, the physiological significance of hGSTPl-1 polymorphism is not fully under stood. In this communication, we report that the I104,AII3 alÃ-eleof hGSTPl-1, which is most frequent in human populatio...
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