• 제목/요약/키워드: cellular level

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중학생의 휴대전화 이용 동기 및 성별에 따른 부모와의 의사소통 수준 (Motivations for Cellular Phone Uses and Parent-Children Communication by Gender among Middle School Students)

  • 천혜정;이정은
    • 가정과삶의질연구
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    • 제24권5호
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    • pp.101-112
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    • 2006
  • This study examined factors related to the motivation for the uses of cellular phones and the relationship between motivation for cellular phone use and parent-child communication among middle school students. A total of 223 questionnaires were submitted and analyzed. The characteristics of motive structure of the middle school students were found as recreation, time management, information-seeking, reassurance and fashion/showing off. Among those motivations, these middle school students examined here were found to use cellular phones in similar ways to how conventional telephone is used such as work/instrumental reasons and socializing/entertaining. The motivations showed a significant association with the level of parent-child communication. Information-seeking and time management motivation were positively related with an open communication level while fashion/showing off and recreation were negatively related with an open communication level.

신경망을 이용한 휴대전화에 의한 RF 노출 평가 모델의 개발 (Development of a Model to Evaluate RF Exposure Level from Cellular Phone using a Neural Network)

  • 김수찬;남기창;안선희;김덕원
    • 한국전자파학회논문지
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    • 제15권10호
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    • pp.969-976
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    • 2004
  • 이동통신 가입자가 증가함으로 인하여 휴대전화로부터 유발되는 전자파 노출 유해성 여부에 대한 논란이 끊임없이 제기되면서 이와 관련한 연구가 국제적으로 활발하게 이루어지고 있다. 휴대전화 사용에 관한 정보로 사용자 본인이 정량적인 전자파 노출량을 직접 알 수 있다면 매우 이상적일 것이다. 그러나 인체에 노출되는 전자파의 양을 직접적으로 측정하는 것은 매우 어렵기 때문에 정확한 노출량을 아는 것은 쉽지 않다. 따라서 본 연구에서는 국내외에서 선행된 연구 결과 및 쉽게 알 수 있는 휴대전화의 모델에 관한 간단한 정보, 사용경향을 이용하여 개인의 휴대전화 전자파의 노출 정도를 제시해 보고자 한다. 휴대전화 사용에 따른 노출 정도를 제시하기 위하여 1일 평균 통화시간, 총 사용기간에 관한 정보와 선행된 연구 결과들을 기반으로 휴대전화 사용시 이격거리와 기울기, 핸즈프리와 안테나의 사용 여부, 휴대전화의 SAR(Specific Absorption Rate), 플립 혹은 폴더형인지 등에 관한 인자들을 이용하였다. 이 인자들을 신경망 회로를 이용하여 노출 정도를 간접적으로 평가하여 사용자에게 제시해 보고자 하였다.

Occurrence of Glutathione Sulphydryl (GSH) and Antioxidant Activities in Probiotic Lactobacillus spp.

  • Yoon, Yung H.;Byun, Jung R.
    • Asian-Australasian Journal of Animal Sciences
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    • 제17권11호
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    • pp.1582-1585
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    • 2004
  • The antioxidative ability on the basis of reduced glutathione sulphydryl level, the inhibition activities of linoleic acid peroxidation of cell free extract of Lactobacillus spp. and the effects of types of media and growth phase of the cells on the cellular GSH level have been determined. Correlation between reduced glutathione sulphydryl level and antioxidative ability of Lactobacillus spp. was analyzed: Lactobacillus casei HY 2782 contained 25.15 $\mu$mole/g of GSH, the cellular GSH level of L. casei HY 2782 reached maximum after 24 h of cultivation and tended to decrease on further cultivation up to 72 h. There was a significantly higher level of cellular GSH when grown in de Man Rogosa and Sharpe (MRS) broth than in tryptone phytone yeast extract (TPY) broth or bromcresol pruple dextrose (BCP) broth (p<0.05). The antioxidant activity of cell free extract of Lactobacillus spp. have been shown to be significantly different among strains in the inhibition of linoleic acid peroxidation by thiobarbituric acid (TBA) test (p<0.01). L. casei HY 2782 and L. acidophilus ATCC 4356 revealed a high degree of antioxidative effect in linoleic acid oxidation system. Spearmans' rank correlation coefficient between inhibitory activity on linoleic acid peroxidation and cellular GSH levels of Lactobacillus spp. was 0.65, which means a significant positive correlation.

광대역 CDMA 셀룰러 표준을 위한 시스템 수준 시뮬레이터의 설계 방법론 (Design Methodology of System-Level Simulators for Wideband CDMA Cellular Standards)

  • 박성경
    • 한국시뮬레이션학회논문지
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    • 제22권1호
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    • pp.41-51
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    • 2013
  • 이 논문에서는 EV-DO나 브로드캐스트 멀티캐스트 서비스와 같은 CDMA 셀룰러 표준을 목표로 하는 시스템 수준 시뮬레이터의 설계 방법론을 소개한다. 셀 레이아웃, 모바일 분포, 채널 모델링, 수신 전력 계산, 스케줄링, 패킷 에러 예측, 트래픽 생성 등의 절차를 따라 가면서, 시스템 수준 시뮬레이터의 기본 구조와 시뮬레이션 흐름을 기술하였다. 시뮬레이터를 모델링하기 위해, CDMA 시스템과 EV-DO 방송 시스템의 순방향 링크에서의 패킷 데이터 전송을 고려하였다. 셀룰러 표준을 위한 시스템 수준 시뮬레이터는 상위 수준 언어로 모델링 및 개발 되었고, 용량과 커버리지를 포함한 에어 접속부 성능 지표들을 계산 및 예측하는 데에 이용되었다.

계지복령환(桂枝茯苓丸)의 배오(配伍)분석과 그 생리활성 (Analysis for Compatibility of Gyejibongnyeong-hwan and Its Biological Activities)

  • 김도회;정양삼;윤미정;윤유식;신순식
    • 대한한의학방제학회지
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    • 제24권4호
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    • pp.353-365
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    • 2016
  • Objectives : We analysed Gyejibongnyeong-hwan's compatibility principle and investigated biological activities by categorizing with molecular level, cellular level, animal level and human level based on Korean study for this formula. Methods : Gyejibongnyeong-hwan's compatibiltity principle was examined by the system of chief, deputy, assistant, and envoy. We looked into studies that presented in Korea from 1956 to 2016 about Gyejibongnyeong-hwan through Korea Institute of Oriental Medicine, Korean medicine information system (OASIS). Then classify into molecular level, cellular level, animal level and human level to analyse. Results : According to the system of chief, deputy, assistant, and envoy, chief herb is Cinnamomi Ramulus, deputy herb is Persicae Semen, assistant herb is Moutan Cortex, Paeoniae Radix, Poria, and envoy herb is Mel. Biological activities can be detected in transcription factors, enzymes, and inflammatory mediators for molecular level. For cellular level, it can be determined in human uterine endometrial cancer cell, human hepatocarcinoma cell, and human platelets. In mouse and rats for animal level, in overian cystoma, menorrhalgia, quality of life improvement in postmenopausal women, and blood stasis with motor vehicle accident for human level, biological activities was caught. Conclusions : From above results, Gyejibongnyeong-hwan is composed in line with the system of chief, deputy, assistan, and envoy. Biological activities are effective to improvement of menorrhalgia, anti-cancer, anti-oxidative, anti-inflammation, improvement of atherosclerosis, analgesic, anti-convulsion, wound healing, and improvement of liver function.

D2D Power Control in the Cellular System: Iterative Algorithm and Convergence

  • Oh, Changyoon
    • 한국컴퓨터정보학회논문지
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    • 제22권9호
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    • pp.41-47
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    • 2017
  • In this paper, we consider the case where D2D users and the cellular user share the uplink of the cellular system. We propose an iterative power control algorithm that converges to the optimum power value. Each user iteratively updates its transmit power level according to the interference function. Finally, all D2D users and cellular user that participate in the transmission get the optimum transmit power level. We first investigate the interference structure and define the interference function. Then, we show that the considered interference function belongs to the standard interference function that converges the unique transmit power level. Through numerical examples, the convergence of the proposed power control algorithm is examined in the various transmission scenarios.

서울지역 삼림에서 세포성 점균의 분포와 토양 미생물과의 관계 (The Distribution of Cellular Slime Molds in Forests of Seoul Area and Relationship between Cellular Slime Molds and Soil Microorganisms)

  • 홍정림;장남기
    • 아시안잔디학회지
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    • 제10권3호
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    • pp.247-262
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    • 1996
  • In this study, the distribution of dictyostelid cellular slime molds was investigated from F, H and $A_1$ horizon of pinus, oak forests in Mt. Puk'an, Mt. Nam and Mt. Kwanak. The relationship of cellular slime molds with other soil microorganisms and abiotic factors were analyzed. The six species were isolated as follows: Polysphondlium pallidurn, Dictyostelium purpureum, D. mucoroides, D. crassicaule, D. capitatum, D. implicatum. The dominant species in pinus forests was P. pallidum, and in oak forests it was D. macro ides. In Mt. Nam, D. mucoroides and P. pallidum were isolated at only oak forest. The Correlations of slime mold abundance with bacteria were significant. Even though positive correlations of cellular slime molds with actinomycetes or fungi were not significant, correlations between soil microorganisms were analyzed. Correlation coefficients were high in Mt. Kwanak(r=0.5921) and Mt. Nam(r=0.7243) at significant level P<0.01. There were significant correlations between total slime molds and abiotic factors. It supports that cellular slime molds are limited by foods in nature. In low level of pH, water content and organic matter, that community diversity is more affected by bacteria whose organic degradation capacity is regulated by interactions of soil microorgaisms. Key words: Cellular slime molds, Soil microorganisms, Correlations, Abiotic factors.

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세포교정영양요법(OCNT)을 이용한 고지혈증 개선 사례 연구 (A Case Study on the Improvement of Hyperlipidemia Patients Using Ortho-Cellular Nutrition Therapy (OCNT))

  • 강선희
    • 셀메드
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    • 제13권9호
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    • pp.33.1-33.4
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    • 2023
  • Objective: A case report on the Improvement of Hyperlipidemia Patients Using Ortho-Cellular Nutrition Therapy (OCNT). Methods: A Korean woman in her 50s was diagnosed with hyperlipidemia, and she has had a very high level of LDL-cholesterol. Results: After performing OCNT, the LDL-cholesterol level decreased from 208 mg/dL to 109 mg/dL. Conclusion: The application of OCNT to patients with hyperlipidemia can help reduce their LDL-cholesterol levels and relieve symptoms.

The five elements of the cell

  • Chung, SunKu;Cha, Seongwon;Lee, Seo-Young;Park, Jung-Hyun;Lee, Siwoo
    • Integrative Medicine Research
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    • 제6권4호
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    • pp.452-456
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    • 2017
  • Everything in the surrounding universe can be attributed into five elements. Human organs can be also linked to the five elements. Cells, the smallest unit of the human body, consist of cellular organelles as little organs. Here, we extended the concept of the five elements to a cellular level via the human organs, theoretically re-evaluating the overall association of cellular organelles in maintaining the homeostasis of cellular functions.

세포교정영양요법(OCNT)을 이용한 혈액암 환자 사례 연구 (A Case Study on Patients with Hematologic Malignancies Receiving OrthoCellular Nutrition Therapy (OCNT))

  • 김영로
    • 셀메드
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    • 제13권5호
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    • pp.20.1-20.3
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    • 2023
  • Objective: A case report on the improvement of patients with hematologic malignancies by Ortho-Cellular Nutrition Therapy (OCNT). Methods: A 69-year-old Korean female diagnosed with Stage 4 ACUTE LYMPHOBLASTIC Leukemia (ALL) had a very low platelet count of 8000/µl. Results: The platelet count improved to its normal level after Ortho-Cellular Nutrition Therapy (OCNT). Conclusion: Ortho-Cellular Nutrition Therapy (OCNT) is effective in relieving the symptoms of acute lymphoblastic leukemia patients with thrombocytopenia.