• Title/Summary/Keyword: Miniature

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Design of Miniature High Power WG ceramic BPF with Improving characteristic (소형의 고감쇄 특성을 가지는 고출력용 세라믹 도파관 대역통과 여파기의 설계)

  • Kim, Jong-Chel;Kim, Seung-Wan;Song, Doo-Hee;Lee, Kie-Jin
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.165-166
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    • 2006
  • By using a ceramic material with dielectric constant 37, the miniature waveguide ceramic bandpass filter was implemented. The proposed waveguide ceramic bandpass filte was based on the mode matching method and simulation process. For overcoming high power, We used the connector at in/output of waveguide ceramic bandpass filte. The result of power test satisfied the 30W. The product will used as a parts of repeater for wibroband.

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Growth of $NdAl_3(BO_3)_4$ Single Crystal for Miniature Solid State Laser (소형 고체 레이저용 $NdAl_3(BO_3)_4$ 단결정 육성)

  • 정선태;강진기;김정환;정수진
    • Journal of the Korean Ceramic Society
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    • v.30 no.8
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    • pp.643-650
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    • 1993
  • NdAl3(BO3)4 have been developed for miniature solid state laser material. Single crystals of NdAl3(BO3)4 were grown by TSSG technique using BaB4O7 flux. The effects of growth conditions such as cooling rate, seed orientation and rotation speed on crystal quality and the morphology were studied. At the cooling rate of 2.4$^{\circ}C$/day and the crystal rotation speed of 30~40rpm with the seed orientation in <201> or <100> directions, transparent and light violet colored crystals in size of 10$\times$15$\times$20㎣ with well developed {010}, {111}, {111}, {021}, {001}, {102}, {112}, {021} faces were obtained. By X-ray diffraction analysis, the space group was determined as C2/c, and the X-ray powder data was obtained.

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Rotation of Orthotropy Axes under Plane Stress (평면응력하에서의 직교이방성 대칭축의 회전)

  • 인정제;김권희
    • Transactions of Materials Processing
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    • v.3 no.3
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    • pp.320-334
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    • 1994
  • A set of full size cold rolled steel sheets has been prestrained in the direction of rolling by uniform tensile elongation of 3% and 6%. Then mid-sized tensile specimens were cut from each of the full size sheets at 30, 45, 60 and 90 degrees to the rolling direction. The mid-sized tensile specimens were then prestrained again by uniform tensile elongation by 1%, 2%, 5%, 10% and 15%. finally, miniature tensile specimens were prepared from each of the mid-sized specimens at every 10 degrees to the specimen axis. From the tensile tests on miniature specimens material's hardening behavior under non-proportional loading has been investigated. There are a number of new observations which has not been known to the authors before current work. One of them is continuous reservation of orthoropic symmetry during tensile elongation of mid-sized specimens. Another is continuous rotations of orthotropy axes. Existing theories seem to fail to explain this observations. A new model is proposed in relation to the rotation of orthotropy axes.

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A Study on the Concentration of Occupational Exposure Limit by Histogram (히스토그램에 의한 작업장노출한계 추정에 관한 연구)

  • Lee, Cheol-Jae;Cho, Dae-Hwan
    • Journal of the Korean Society of Mechanical Technology
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    • v.13 no.2
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    • pp.107-113
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    • 2011
  • This study was performed for the application of the exposure limit in work field and the relative noxious gas concentration was estimated by using a miniature ship. The noxious gas concentration about light and shade number distribution of measuring subject field was estimated by using floating visualization image from a miniature ship in a large wind tunnel. About the concentration estimation, the correlation of concentration distribution drawn from the existing experimental results was used, the estimation result satisfied LTEL standard.

An Experimental Study on Miniature Two-phase Closed Thermosyphons With Inserts (철사를 삽입한 초소형 열사이폰에 관한 기초 실험 연구)

  • Lee, Y.S.;Chun, W.G.;Lee, Y.P.
    • Solar Energy
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    • v.15 no.2
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    • pp.39-46
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    • 1995
  • Reported is a visual and quantitative experimental study on the two-phase flow and heat transfer characteristics of miniature two-phase closed thermosyphons with wire inserts. The visual study clearly demonstrated the two-phase flow involved in such thermosyphons. In the quantitative study, the effects on the heat transfer rate of the insert wire diameter, the ratio of heated-length to cooled length and the applied heat flux were investigated.

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Primary Salivary Gland Adenocarcinoma in a Dog

  • An, Su-Jin;Kim, Dae-Young;Ahn, Soo-Min;Jung, Dong-In;Hwang, Tae-Sung;Lee, Hee-Chun;Lee, Jae-Hoon;Yu, Do-Hyeon
    • Journal of Veterinary Clinics
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    • v.35 no.6
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    • pp.308-310
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    • 2018
  • A 17-year-old neutered male Miniature Pinscher dog presented with a mass on the left side of the submandibular region. Fine needle aspiration revealed malignant epithelial cells from the salivary gland but no evidence of metastasis was found on radiography, ultrasonography, or computed tomography. The cervical mass was surgically resected, and the histopathological examination confirmed adenocarcinoma of the mandibular salivary gland. Seven months after the initial diagnosis, the dog is alive without any clinical signs. This report describes the clinical findings, cytology, diagnostic imaging, and histopathological characteristics of a mandibular salivary gland adenocarcinoma in a Miniature Pinscher dog.

Development of a 3D thermohydraulic-neutronic coupling model for accident analysis in research miniature neutron source reactor (MNSR)

  • Ahmadi, M.;Rabiee, A.;Pirouzmand, A.
    • Nuclear Engineering and Technology
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    • v.51 no.7
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    • pp.1776-1783
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    • 2019
  • To accurately analyze the accidents in nuclear reactors, a thermohydraulic-neutronic coupling calculation is required to solve fluid dynamics and nuclear reactor kinetics equations in fine cells simultaneously and evaluate the local effects of neutronic and thermohydraulic parameters on each other. In the present study, a 3D thermohydraulic-neutronic coupling model is developed, validated and then applied for Isfahan MNSR (Miniature Neutron Source reactor) safety analysis. The proposed model is developed using FLUENT software and user defined functions (UDF) are applied to simulate the neutronic behavior of MNSR. The validation of the proposed model is first evaluated using 1mk reactivity insertion experiment into Isfahan MNSR core. Then, the developed coupling code is applied for a design basis accident (DBA) scenario analysis with the insertion of maximum allowed cold core reactivity of 4 mk. The results show that the proposed model is able to predict the behavior of the reactor core under normal and accident conditions with a good accuracy.

A Successful Treatment of Compulsive Tail-Chasing Behavior with Only Psychotropic Medications in a Miniature Poodle

  • Shin, Yoon-Joo;Kim, Sun-A
    • Journal of Veterinary Clinics
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    • v.39 no.5
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    • pp.282-285
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    • 2022
  • Compulsive behavior is a sequence of movements usually derived from normal maintenance behaviors that are performed out of context in a repetitive, exaggerated, ritualistic, and sustained manner. In general, the treatment plan includes environmental management, behavior modifications, and psychotropic medications, however, the prognosis is varied. In this case report, a 9-year-old neutered male miniature poodle presented with a lifelong history of tail chasing and mutilation. Based on the behavioral history, observations, and physical examination, compulsive disorder was diagnosed. The dog's compulsive tail chasing behavior improved only with a combination of psychotropic medications, including fluoxetine, trazodone, and gabapentin.

Penile neoplasm associated with Equus caballus papillomavirus type 2 infection in a miniature Appaloosa: a case report

  • Sang-Kyu Lee;Jungho Yoon;Youngjong Kim;Inhyung Lee
    • Korean Journal of Veterinary Research
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    • v.64 no.1
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    • pp.8.1-8.5
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    • 2024
  • An 18-year-old miniature Appaloosa stallion presented with 6 months of history of sanguineous crusts on medial hind limbs and discomfort of micturition. Cauliflower-like and small masses were treated with cryotherapy for 6 months, but the regrowth of masses occurred. Subsequently, local excision via laser and topical treatment with 5% 5-fluorouracil for 5 months were followed. However, the horse was euthanized 4 months later due to regrowth of the masses. The mass was diagnosed as penile papilloma with cellular atypia and Equus caballus papillomavirus type 2 (EcPV-2) DNA was detected. This is the first report of equine penile neoplasm with EcPV-2 infection in Asia.