نتایج جستجو برای: integrated sidelobe level isl

تعداد نتایج: 1318483  

2013
Ziqiang Xu Yu Shi Congyu Xu Peng Wang

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...

Journal: :Israel Journal of Plant Sciences 2021

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...

Journal: :IEEE Access 2023

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...

Journal: :Infection and immunity 2009
Xiuyang Guo Carmen J Booth Michael A Paley Xiaomei Wang Kathleen DePonte Erol Fikrig Sukanya Narasimhan Ruth R Montgomery

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...

حیاتی رودباری , نسیم, علوی مقدم, سپیده , فقیهی, فائزه,

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...

1999
Philip Yuanping Zhou Mary Ann Ingram

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...

Journal: :Actuators 2021

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...

Journal: :Remote Sensing 2023

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...

Journal: :IJCVIP 2012
Karishma Dixit Anand Singh Jalal

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...

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