نتایج جستجو برای: integrated sidelobe level isl
تعداد نتایج: 1318483 فیلتر نتایج به سال:
A novel single-cavity dual mode substrate integrated waveguide (SIW) filter with mixed source-load coupling (MSLC) is presented. By using an interdigital slot-line (ISL) to introduce mixed coupling between source and load, the proposed filter with only one cavity could have three transmission zeros which can be controlled flexibly. Under the circumstances, the filter exhibits better frequency s...
Abstract Skin ischemia-reperfusion (I/R) injury is a serious condition that compromises skin flap surgery and leads to organ dysfunction. It arose due restoration of blood supply after prolonged ischemia. The present study was conducted explore the possible protective Isoliquiritigenin (ISL) on in rats. ISL administered rats dose 10 mg/kg, 20 30 mg/kg. effect quantified tissue following I/R var...
Peak sidelobe level reduction (PSLR) is crucial in the application of large-scale array antenna, which directly determines radiation performance antenna. We study PSLR subarray aperiodic arrays and propose three structures: dislocated subarrays with uniform elements (DSUE), random (USRE), (DSRE). To optimize dislocation position elements, improved Bat algorithm (IBA) applied. draw comparison ef...
The saliva of hematophagous arthropods contains potent anti-inflammatory and antihemostatic activities that promote acquisition of the blood meal and enhance infection with pathogens. We have shown that polymorphonuclear leukocytes (PMN) treated with the saliva of the tick Ixodes scapularis have reduced expression of beta(2) integrins, impaired PMN adherence, and reduced killing of Borrelia bur...
سابقه و هدف: در این مطالعه، تمایز سلول های بنیادی خون ساز CD133+ و CD34+ مشتق از خون بند ناف انسان، به سلولهای شبه عصبی حرکتی، بررسی شد. روش بررسی: سلولهای بنیادی خون ساز از خون بند ناف انسان جدا شده و سپس، سلولهای CD133+ و CD34+ براساس مارکر، توسط تکنیک جداسازی مغناطیسی MACS تفکیک شدند. بررسی فلوسایتومتری، برای تعیین درصد خلوص سلول های جداشده، انجام گرفت. پس از آن، سلولها در محیط کشت د...
This paper presents a new pattern synthesis algorithm for arbitrary arrays based on adaptive array theory. With this algorithm, the designer can efficiently control both mainlobe shaping and sidelobe levels. The element weights optimize a weighted L2 norm between desired and achieved patterns. The values of the weighting function in the L2 norm, interpreted as imaginary jammers as in Olen and C...
Thickness vibration mode is commonly used for high-frequency transducers. For disc piezoelectric ceramics, there no ideally pure thickness because the coupling between radial and modes always exists. Furthermore, it also deteriorates transmission voltage response directivity of transducer. In this paper, based on theoretical calculation finite element simulation method, a new method was propose...
The joint radar and communications (JRC) waveform often has a high range sidelobe, which will degrade the target detection performance of an automotive JRC system. To solve this problem, complementary group (JRC-CWG) design method is proposed in paper by exploiting philosophy sequence. In JRC-CWG, traditional unimodular waveforms, such as binary phase shift keying (BPSK) waveform, are used to p...
The sign language is the essential communication method between the deaf and dumb people. In this paper, the authors present a vision based approach which efficiently recognize the signs of Indian Sign Language (ISL) and translate the accurate meaning of those recognized signs. A new feature vector is computed by fusing Hu invariant moment and structural shape descriptor to recognize sign. A mu...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید