نتایج جستجو برای: fed elements

تعداد نتایج: 360809  

Journal: :Journal of physics 2022

Abstract A novel dual-band dual-polarized shared-aperture antenna array is presented for fifth generation wireless communication application. This a combination of low-band and four high-band antennas. In order to simplify the design model while achieving broadband, working on (from 0.68 0.99 GHz) 3.3 5.1 are both loop-shape radiator fed by Y-shape feed. Coplanar, resolved embedding HB elements...

Journal: :Biotechnology progress 2004
Longan Shang Seong Chun Yim Hyun Gyu Park Ho Nam Chang

Several important properties of poly(3-hydroxybutyric-co-3-hydroxyvaleric acids) (P(3HB-co-3HV) depend mainly on the HV unit fraction of the copolymer. Sequential and simultaneous feeding of glucose and valerate were employed to produce P(3HB-co-3HV) in a fed-batch culture of Ralstonia eutropha, and the effects of feeding models on the cell growth, 3HV unit fraction, and copolymer productivity ...

2007

Cell Culture Bioreactors Basic Types of Bioreactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Stirred Tank (Well Mixed) vs. Tubular Reactor (Plug Flow) . . . . . . . . . . . . . . . . . 3 Segregated Bioreactors (Dead Zone Present) Compartmentalized Bioreactors . . 4 Implication When Growth or Reaction Occurs in the Reactor . . . . . ....

Journal: :IEEE Antennas and Wireless Propagation Letters 2022

A wideband slot array antenna at W-band with a single-layer corporate feeding network is presented in this letter. The radiating slots are fed by open-ended rectangular waveguides to widen the impedance bandwidth instead of commonly used coupling mechanism. subarray two elements placed H-plane designed. In order fit into one layer, compact hybrid used, which combination ridge and E-plane hollow...

Journal: :Microwave and Optical Technology Letters 2023

Abstract A wideband differential‐fed (DF) metasurface (MTS) antenna array is proposed in this letter. As the element of array, a nonuniform MTS designed step by using characteristic mode analysis. In first step, 2 × rectangular patch‐based investigated. We observe that its two fundamental modes exhibit even/odd symmetric current distributions, which can be regarded as pair c/π modes. Unlike c m...

Journal: :The British journal of nutrition 1985
E C Allotta S Samman D C Roberts

To characterize the hypercholesterolaemic effect of casein further, four groups of young male rabbits in two separate experiments were placed on cholesterol-free semi-purified diets for 12 weeks. The diets were similar in composition, with either casein or soya-bean-protein isolate providing the protein source (250 g/kg). In two of these diets the salt mix was reduced by 45% (normally 40 g/kg) ...

2004
J. D. COLEMAN

~UMMARY: The feeding ecology of the starling, Sturn us vulgaris, was studied in Canterbury from 1968-71. StarHngs fed in f10cks which varied seasonally in composition and behaviour. During breeding, parent birds fed in smaIl isolated multi specific flocks which after breeding, coalesced into much larger more regimented monospecific flocks. Starlings dietary patterns varied seasonally both in di...

Journal: :Computers, materials & continua 2022

Due to the limited space and large mutual coupling levels, design of sub-6 GHz massive Multi-Input Multi-Output (m-MIMO) smartphone antenna system attracts antennas’ designers engineers worldwide. Therefore, this paper presents 18-element m-MIMO that covers long-term evolution 42 (LTE42) frequency band (3.4–3.6 GHz) for fifth generation (5G) applications in metallic frame smartphones. The propo...

2006
Christopher B. Kaelin Lijie Gong Allison Wanting Xu Fayi Yao Kristin Hockman Gregory J. Morton Michael. W. Schwartz Gregory S. Barsh Robert G. MacKenzie

Energy homeostasis depends on the regulation of hypothalamic neurons by leptin, an adipocyte hormone whose circulating levels communicate body energy stores. Leptin activates the transcription factor Signal Transducer and Activator of Transcription 3 (Stat3) in hypothalamic neurons, including neuronal subtypes producing Agouti-related protein (Agrp), a neuropeptide which stimulates feeding. Pre...

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