نتایج جستجو برای: quency domain
تعداد نتایج: 405943 فیلتر نتایج به سال:
BALB/c mice were treated with different combinations of hormones (estrogens, progesterone, and Enovid) and herpesvirus type 2 (HSV-2). Characteristic cytological changes of herpesvirus infection were observed in 40% of 140 mice treated with the virus; these mice had previously been immunized with HSV-2 inactivated with ultraviolet light. No significant differences were observed in the fre quenc...
For most patients with advanced hepatocellular carcinoma (HCC), surgery with curative intent or a locally ablative technique, such as percutaneous ethanol injection or radiofre‐ quency ablation, are no longer available [1]. Patients can now be treated using transarte‐ rial chemoembolization (TACE) or systemic chemotherapy. Several chemotherapeutic drugs have been developed and tested. The anti-...
Nitrate balance and N-nitrosodimethylamine (NDMA) excretion were studied in woodchucks chronically infected with woodchuck hepatitis virus (WHY). Twenty-four-h urinary recovery of a bolus dose of |l5N]nitrate was 54 ±12% in woodchucks. VVHV-infectedanimals formed 3-fold more nitrate endogenously than did control animals (/' < 0.01). Treatment of WHV-infected animals with Escherìchiacoli lipop...
R ecently malf unctions of teleco mmunication installations caused by switching noises of el ectric equipment or devices have been increasing. T he switching noises usually have low frequency components less than 50Hz and also more than 9kHz or 150 kHz. It is useful to detect power spectrum of noises in order to solve EMC proble ms. The LPC (Linear Prediction Cod e) me thod is kn own as a power...
NASA Tech Briefs, November 2008 quency mode; analysis of the results led to the conclusion that this mode is useful for measuring thicknesses between 0.5 and 1 m. Several modifications have been conceived for implementation in further development toward an improved practical system: • The system would function in a single frequency-band/mode (100 to 1,200 MHz) that would afford a resolution of ...
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...
quency, the demodulated and sampled received signal can be modeled by, The problem of separating and estimating signals received by an array whose array manifold has an unknown structural form is usually referred to as the blind N X jÁ (t ) n k signal copy problem. In this paper we consider the x(t ) = a e +n(t ) = As(t ) +n(t ) (2) k n k k k blind signal copy problem for polynomial phase sign=...
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...
Given our initial experience with the low-frequency, impulsive noise emissions from the ~OD-I wind. turbine and their impact on the surroundmg commumty, the ability to assess the potential of in~erior lo~-fr~quency annoyance in homes located near wmd turbme mstallations may be important. Since there are currently no universally accepted metrics or descriptors for. I~w frequency community annoy...
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