• Title/Summary/Keyword: Human-Body Effect

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A Study on the Effects of Electroencephalogram of Blocking Electromagnetic Wave Materials by useing the Nano Silver (나노 은을 이용한 전자파 차폐 직물이 뇌파에 미치는 영향)

  • Lee, Su-Jeong;Lee, Tae-Il
    • Fashion & Textile Research Journal
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    • v.6 no.6
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    • pp.810-814
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    • 2004
  • This study is one of the fundamental researches for the development of future smart clothing and textile products using silver(Ag) nano powder. Our study was focused on the blocking or insulating effects of nano-processed textiles from electromagnetic waves. Also, for the surveying of the actual effect to human body, we measure the variation of electroencephalogram which is an indication of human physical symptoms. Among various textiles in this experiment, nano silver processed case has shown the best blocking performance from the electromagnetic waves, which decreases depending on the distance. As a reference model of working environment, we setup the visual stimuli object on the computer that is a source of electromagnetic wave. The power spectrum distribution and the incidence of electroencephalogram was measured. The analysed data has shown that, with nano-processed textiles, ${\beta}$ wave does not appear very often where ${\beta}$ wave appears only to illustrate the stable states of human's body. However, as for the materials without nano processing, the ratio of ${\gamma}$ waves in the total level of electroencephalogram becomes higher in spite of short exposure to visual stimuli in work environment, which shows that the worker becomes stressed. The ${\beta}$ wave electroencephalogram of all materials is drawn in calcarine fissure of occipital lobe to show the convergent distribution, and stronger with block-processed Nano Silver Silk(NSS). The study based on the potential risks of human diseases such as physical fatigue by electromagnetic waves, and has shown that the application of Nano Silver textile for human uses require a proper particle size of it which would not penetrate cellular tissues, and a proper binder and binding treatment for it. However, it is highly required for back-up researches to verify various aspects in applying nano silver to textile products.

Effect on the Subcutaneous Fat Thickness of the clothing Training in the Cold Condition (향한기의 표의훈련이 피하지방두께에 미치는 영향)

  • 박승순;이원자
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.4
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    • pp.551-562
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    • 1999
  • This study was intended to investigate the effect on the human body such as subcutaneous fat thickness the circumference of extremities etc. of the clothing training of putting on thin clothes periodically from the cold period. The subjects were divided into the clothing training group and the non-training group, The training group was asked to wear cool clothes in daily life and to wear the training clothes of T-shirts with half-length sleeves and pants and perform the clothing training for two hours daily three times a week in a cold environment over the period from November to February. The non-training group was asked to lead a life wearing comfortable clothes. Then a comparative experiment was conducted at 15$\pm$1$^{\circ}C$, 50$\pm$5% R, H and 0.25m/sec before and after the clothing training. After the clothing training regardless of gender subcutaneous fat thickness was more increased and total clothing weight per the surface area of the body was decreased in the training group than the non-training group. The training group showed lower skin temperature in the limbs and lower average skin temperature than the non-training group irrespective of gender which proved the effect of the clothing training. The training group was shown to have attendancy toward a greater sense of warmth and a less sense of discomfort which proved the effect of the clothing training.

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A Handset Antenna Design with the Real-Portable Mock-Up and Its HAC with the Hand-Effect (착용환경을 고려한 안테나 설계와 손 부착 시 HAC 지수의 관찰)

  • Kahng, Sungtek;Choi, Dong-Geun;Jeon, Jinsu;Park, Jeong-Hoon
    • Journal of Satellite, Information and Communications
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    • v.9 no.1
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    • pp.102-106
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    • 2014
  • In this paper, we investigate the realistic environment influence on the Hearing-Aid Compatibility(HAC) of the body-held device mock-up with a dual-band antenna. In detail, first, a dual-band internal antenna is designed considering the neighboring objects essential to a real attachable mobile device. This comes to reality by making its mock-up version. Second, the HAC of this device is simulated and measured for 'stand alone', and 'hand-held' cases. Particularly, the electromagnetic simulation of the designed antenna in the real device is verified by the standard measurement. Finally, the evaluated HAC is analyzed in terms of the relations with the bands, the mock-up environment and the hand effect.

Design of a WBAN Repeater Antenna for MICS and ISM Bands (MICS와 ISM 대역을 위한 인체 통신 중계용 안테나 설계)

  • Lee, Ho-Joo;Kwon, Kyeol;Lee, Soon-Yong;Choi, Jae-Hoon
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.23 no.3
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    • pp.314-319
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    • 2012
  • In this paper, a repeater antenna operating at MICS and ISM bands is proposed and the antenna performance including the human body effect is investigated. The proposed antenna is composed of a ZOR(Zeroth Order Resonator) and a loop antenna. A loop antenna is operated at ISM band and a loop antenna capacitively coupled with a ZOR acts as an antenna for MICS band. Simulation was carried out in order to analyze the effects of human body on antenna performance when a human body is located in the near field of an antenna. According to the simulated and measured results, the proposed antenna has -10 dB $S_{11}$ bandwidth wide enough to cover both MICS and ISM bands. The measured peak gains are -28.53 dBi and 3.85 dBi at MICS and ISM band, respectively. The dual band and radiation properties of the proposed antenna are well suited for the WBAN repeater system.

A comparative study on Five Mental(Hun, Shin, Beak, Vi, Zhi) and soul of Confucianism (오신과 유가의 정신개념에 관한 비교 연구)

  • Choi Sung Wook;Kang Jung Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.4
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    • pp.626-629
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    • 2002
  • In Oriental medicine, Five Mental is a concept for understanding of man's mental structure. Spirit and body is inseparable relation in Oriental Medicine. Function of spirit and body is regarded as one in Oriental Medical physiology. Spirit is the essence of a function which an organism reveal, and it is regarded in the same with life. For this reason, identification spirit with life is special feature of Oriental Medicine. In Confucianism, Li(理) refers to nature's discipline, which everything under the sun shares. It is similar to the concept of Shin(神) in a broad sense and Sung(性) is similar to that of Shin(神) in a narrow sense. Confucianism's principle is similar to Oriental medicine's, in that they classify Sung(性) into Gi-Jil-Ji-Sung(氣質之性) and Bon-Yeon-Ji-Sung(本然之性), that Sung(性) acts upon man differently according to his disposition, and that materials have an effect on Shin(神)'s action. According to mind's action, there are Human mind(人心) and Moral mind(道心). Human mind(人心) is defined as a mental action of higher degree and Moral mind(道心) is conceived as a mental action related to body. It is similar to Oriental medicine's principle in which Shin(神) is classified into Hun(魂) and Beak(魄) according to its action. Yi(意) is self-control and application, and Zhi(志) is a conscious state in which basic acts towards the object are fixed regularly. Those are similar to the concepts of Oriental medicine.

Research on Thermal Comfort by Increasing Air Conditioner Temperature (에어컨 온도상승에 따른 온열쾌적성 변화에 관한 연구)

  • Kim, Hyung-Chul;Kum, Jong-Soo;KIM, Dong-Gyu;CHUNG, Yong-Hyun
    • Journal of Fisheries and Marine Sciences Education
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    • v.18 no.2
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    • pp.77-84
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    • 2006
  • This research evaluates thermal comfort by comparing the case of maintain cooing temperature of room with the case of raising it at the point of time that human body begins to adapt. An experiment uses constant temperature & humidity chamber 2 places. Pretesting room make up summer season environment, the testing room control by air-conditioner. In condition that maintain temperature of $33^{\circ}C$. The subjects stay in the pretesting room during the 30 minute for the heat storage amount of the normal summertime. The subjects stay in the testing room under each case (case 1: maintaining $24^{\circ}C$, case 2: maintaining $26^{\circ}C$, case 3: up $1^{\circ}C$ after maintaining $24^{\circ}C$ during 30 minute, case 4: up $1^{\circ}C$ after maintaining $26^{\circ}C$ during 40 minute). 1. Result of comparison of case 1 and case 2 appears that thermal sensitive vote examine from slight cool to cool and thermal comfort examine slight comfort by temperature rise at human body adaptation point of time.2. Test of case 3 and case 4 appear similar value at thermal sensitive vote and thermal comfort.3. Through the case 2 and case 4, continuous thermal comfort maintain at $24^{\circ}C$, if raise $26^{\circ}C$, same thermal comfort maintain after a human body adaptation temperature rising effect bring energy saving.

Development of Syllabuses for Biological Nursing Science Subjects based on Learning Outcomes: Structure and Function of Human Body, Pathogenic Microbiology, Pathophysiology, and Mechanisms and Effects of Drugs (학습성과를 기반으로 한 기초간호학 교과목의 강의계획서 개발: 인체 구조와 기능, 병원미생물학, 병태생리학, 약물의 기전과 효과)

  • Park, Hyunju;Kim, Yun-Kyung;Kim, Joo Hyun;Jeong, Jae Sim;Choi Kwon, Smi;Hong, Hae Sook
    • Journal of Korean Biological Nursing Science
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    • v.17 no.2
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    • pp.188-210
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    • 2015
  • Purpose: The purpose of this study was to develop syllabuses of basic nursing science subjects (Structure and Function of Human Body, Pathogenic Microbiology, Pathophysiology, and Mechanisms and Effects of Drug) based on learning outcomes. Methods: We developed a 3-phase plan to develop the syllabuses. In the first phase, The Korean Society of Biological Nursing Science (KSBNS) held a workshop in May, 2013 in which professors who are in charge of basic nursing science subjects shared opinions about learning outcomes. As a result, initial prototype syllabuses came out. In the second phase, revised syllabuses based on learning outcomes were presented and discussed in the conference held by KSBNS in November, 2013. In the last phase, a research team who taught basic nursing science subjects finalized the syllabuses during the meetings. Results: Syllabuses of 4 basic nursing science subjects were developed. Conclusion: These syllabuses of 4 subjects need to be disseminated throughout nursing colleges. Further revision needs to be made according to the circumstances and context of each school.

Assessment of Chronic Toxicity of an Ayurvedic Herbo-Metallic Formulation Rasaraj Rasa in Wistar Rats

  • Chaitali S. Waghmare;Shivcharan R. Bidve;Ramacharya V. Gudi;Megha L. Nalawade;Mukesh B. Chawda
    • Journal of Pharmacopuncture
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    • v.25 no.4
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    • pp.354-363
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    • 2022
  • Objectives: This study aimed to assess the adverse effects of Rasaraj Rasa tablets after repeated oral administration for 180 days in Wistar rats. Methods: Wistar rats were divided into five groups, of which three were treated with 54, 162, and 270 mg/kg body weight of Rasaraj Rasa, respectively, which correspond to one, three, and five times the proposed human therapeutic dose, for 180 days consecutively. The fifth group (satellite) also received 270 mg/kg body weight of Rasaraj Rasa for 180 days. Body weight and food intake were measured weekly. At the end of the study, all rats were sacrificed, and their blood, serum, and organs were collected and examined using hematology, serum biochemistry, gross pathology, and histopathology tests. In contrast, the satellite group was kept for 4 weeks after treatment. Results: No significant treatment-related toxicological findings were observed in the clinical features, body weight, laboratory findings, and pathological findings of the high-dose treated groups, when compared to those of the control group. Conclusion: The no-observed-adverse-effect-level for Rasaraj Rasa in Wistar rats is set at 270 mg/kg body weight.

Acute Toxicity Study of Recombinant Human Interferon ${\alpha}A$ (LBD-007) in ICR Mice

  • Kim, Hyoung-Chin;Song, Si-Whan;Cha, Shin-Woo;Shin, Chun-Chul;Ha, Chang-Su;Han, Sang-Seop
    • Biomolecules & Therapeutics
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    • v.1 no.2
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    • pp.266-269
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    • 1993
  • The acute toxicity of a recombinant human interferon $\alpha$A (code name: LBD-007) was evaluated in both sexes of ICR mice, 5 weeks old, by the oral, subcutaneous and intravenous routes of administration. Based on the results, LBD-007 was not considered to induce any toxic effect on the mice in mortalities, clinical findigs, body weights and gross findings. It is suggested that LD$_{50}$ values in mice would be $>48{\times}10^8$ IU/kg in the oral, subcutaneous or intravenous routes.s.

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Subacute Toxicity of Recombinant Human Erythropoietin (rHu-EPO) in Beagle Dogs (비글개에서 인체 재조합 적혈구 조혈인자, rHu-EPO의 아급성정맥독성시험)

  • 조명행;성하정;김형식;곽승준;임소영;천선아;김원배;김병문;안병옥
    • Biomolecules & Therapeutics
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    • v.4 no.4
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    • pp.323-329
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    • 1996
  • A recombinant human erythropoietin (rHu-EPO), was administered intravenously to beagle dogs at doses of 100, 500 and 2, 500IU/kg/day for 30 days. There were no significant clinical signs such as body weight, food intake, physical and opthalmic examination, urine analysis, etc. Any toxic response was not observed except for enlarged spleen and extramedullary hematopoiesis. No observed adverse effect level (NOAEL) of rHu-EPO for 30 days was considered to be 100IU/kg/day in beagle dogs.

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