• 혜화의학회지
• /
• 제19권2호
• /
• pp.35-42
• /
• 2011

The purpose of this study is to evaluate the difference about pathogenesis of skin type. the theory that explains each individual react to certain stress is generally accepted in traditional oriental medicine. The aim of this experiment is to find out relationship between the effect of facial condition and the vital conditions of traditional Oriental medicine. We recognized that pattern identification of fluid-humor could be divided into 4 different groups. The reason is that the fluid-humor could be interpreted as Qi & Blood, furthermore Qi & Blood were categorized into deficiency and excess groups. Korean female volunteers in good health participated in this experiment. Three doctors of Oriental medicine classified them into 4 groups based on qi-blood and deficiency-excess concept(qi-deficiency; qi-excess:qi-stagnation; blood-deficiency; blood-excess:static-blood). Volunteers were assessed with non-invasive skin measuring devices. And we analyzed the correlation of skin physiological parameters with vital conditions; moisture, sebum and elasticity. Measurement moisture and sebum of facial skin tended to deacease only in static blood group.

• 대한화장품학회지
• /
• 제44권3호
• /
• pp.259-266
• /
• 2018

오늘날의 사회에서는 삶의 질 향상으로 실제 나이보다 젊어 보이며 이에 따라 노화방지에 대한 관심이 증가하고 있다. 또한 같은 나이의 사람들과 비교했을 때 본인이 젊어 보이는지에 대한 관심이 높아지고 있다. 이 연구에서 우리는 외적 노화에 가장 주요한 영향을 주는 주름 지수를 구하고자 하였다. 전체 얼굴의 주름은 8개로 분할된 영역에 의해 점수화되었고, 실제 연령과 피부 파라미터 사이의 상관 관계를 분석하였다. 연구 대상자 206명(한국인 여성 105명, 몽골 여성 101명)을 대상으로 하였다. 대상자는 연령대별로 20대, 30대, 40대, 50대를 네 군으로 나누었다. 주름 패턴은 주름, 미간, 코뿌리, 눈꺼풀, 눈밑주름, 눈꼬리, 팔자주름, 입가 8개 부위의 주름을 평가하고 주름 점수에 따른 계산식을 개발 하였다. 또한 계산식에 의해 얻어진 주름지수와 연관성 있는 피부 특성 파라미터를 알아보고자 피부 탄력, 모공, 주름, 피지 분비를 측정하였다. 방정식을 적용하여 계산한 한국인의 경우 주름연령과 실제연령과의 차이는 없었다. 반면, 몽골인에서는 실제연령과 비교하여 9세가 더 나이 들어 보인다고 밝혀졌다. 얼굴 주름 나이와 피부 특성 파라미터 사이의 상관 관계는 양국에서 피부 탄력 > 모공 또는 눈꼬리 주름 > 피부 색 > 피지 분비 순으로 나타났다. 피부 탄력은 얼굴 주름 나이와 가장 관련이 있는 변수로 나타났다. 본 연구를 통해 한국과 몽골 여성의 연령별 피부 주름 패턴을 규명하였으며, 이 연구로부터 개발된 주름살 계산식을 향후 화장품의 효능 연구에서 얼굴 주름의 나이를 계산하는 도구로 사용할 수 있을 것으로 생각된다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
• /
• pp.42-44
• /
• 2005

Many cellular phone volunteer studies have been conducted since such a social issue is raised that the long time usage of cellular phone may increase health risk. While there were various volunteer studies using GSM cellular phone on heart rate and blood pressure at abroad, very few studies using CDMA phone were conducted in domestic and abroad. In this study, the volunteer groups of 21 adults were exposed at 300 mW for half an hour, and the physiological parameters such as blood pressure, heart rate, respiration rate, and skin impedance were measured. All the parameters' results did not reveal any differences between exposure and non-exposure conditions in adults.

• Asian-Australasian Journal of Animal Sciences
• /
• 제30권4호
• /
• pp.593-601
• /
• 2017

Objective: The aim of this study was to evaluate heat tolerance using heat tolerance indices, physiological, physical, thermographic, and hematological parameters in Santa Ines and Morada Nova sheep breeds in the Federal District, Brazil. Methods: Twenty-six adult hair sheep, one and a half years old, from two genetic groups (Santa Ines: 12 males and 4 females; Morada Nova: 7 males and 3 females) were used and data (rectal temperature, respiratory rate, heart rate, skin temperatures; hematological parameters) were collected during three consecutive days, twice a day (morning and afternoon), with a total of six repetitions. Also physical parameters (biometric measurements, skin and hair traits) and heat tolerance indices (temperature-humidity index, Iberia and Benezra) were evaluated. The analyses included analyses of variance, correlation, and principal components with a significance level of 5%. Results: The environmental indices, in general, indicate a situation of thermal discomfort for the animals during the afternoon. Breed significantly influenced (p<0.001) physiological and physical characteristics of skin, hair, biometric measurements and Iberia and Benezra heat tolerance indices. Santa Ines animals were bigger and had longer, greater number and darker hair, thicker skin, greater respiratory rate and Benezra index and lower Iberia index compared with Morada Nova breed. Conclusion: Although both breeds can be considered adapted to the environmental conditions of the region, Morada Nova breed is most suitable for farming in the Midwest region. The positive correlation found between the thermographic temperatures and physiological parameters indicates that this technique can be used to evaluate thermal comfort. Also, it has the advantage that animals do not have to be handled, which favors animal welfare.

• 대한인간공학회지
• /
• 제22권2호
• /
• pp.15-28
• /
• 2003

The one of the most important factors is the platoon design on developing AH3(Advanced Highway System), as it is related to traffic efficiency and drivers' safety. This study was evaluated that how much speed is comfortable for drivers and how long distance is appropriate for vehicular gap of platoon by measuring drivers' physiology signal and sensibility. A fixed-based AHS simulator was developed by using a real vehicle cockpit and the restructured part of Korean highway for human factors evaluation. The EEG(electroencephalogram), ECG (electrocardiogram) and GSR(Galvanic Skin Response) were measured for obtaining drivers' physiology signal according to the change of speed and gap. The brain wave(${\alpha},\;{\beta},\;{\delta},\;{\theta}$) by EEG, the response of the autonomic nervous system. the sympathetic and parasympathetic nervous system, by ECG, and relax-arousal situation by GSR were analyzed. The SD(Semantic Differential) method was also applied to evaluate drivers' sensibility by 5-grade evaluation scale with 96 adjectives. SSQ(Simulator Sickness Questionnaire) was used to measure the simulator sickness of pre and post driving, two times. As the results, drivers were comfortable with 120km/h speed of platoon and lam to 15m vehicular distance. The results of this study may differ from the adaption of the reality because of many parameters. However, the purpose of this study is show to significant results of the drivers' safety and the acceptability of human factors evaluation.

• 한국축산식품학회지
• /
• 제35권3호
• /
• pp.413-420
• /
• 2015

The aim of our study was to evaluate the potential benefits of an oral supplement containing porcine placenta extract (PPE) on skin parameters related to cutaneous physiology and aging. PPEs were administered orally to hairless mice for 12 wk. The effects of oral PPE administration on skin water-holding capacity and Transepidermal Water Loss (TEWL) were similar to those of oral collagen (HYCPU2) administered as a positive control. Magnified photographs and replica images showed a reduction in UVB-induced wrinkle formation after collagen and PPE treatments. PPE treatments ameliorated the thicker skin surface that results from UVB exposure, based on a histological examination of skin tissue. The groups that were orally administered PPE (0.05%, OL; 0.1%, OH group) showed significantly reduced Matrix Metaloproteinase-2 (MMP-2) mRNA expression levels compared with the UVB control (Con), by 33.5% and 35.2%, respectively. The mRNA expression of another collagen-degrading protein, MMP-9, was also significantly lower in the groups that received oral administration of PPE (especially in the OH group) than in the control group. Additionally, oral administration of PPE significantly upregulated tissue inhibitor of metalloproteinase-1 (TIMP-1) and -2 mRNA expression levels compared with expression levels in the control group (p<0.05). This indicates that orally administered PPE activated the expression of Timp-1 and -2, inhibitors of MMP, which is responsible for collagen degradation in skin. Taken together, we propose that long-term oral administration of PPE might have a beneficial effect with respect to skin photo-aging.

• 동의생리병리학회지
• /
• 제18권5호
• /
• pp.1356-1361
• /
• 2004

Moxa-combustion therapy make use of heat stimulus and chemicals result form when cauterize the skin with moxa cones to medical cares. However, recently moxibustion have been utilized less than acupuncture for treatment of disease in a practicing oriental physicians. To determine variable parameters (the numbers, the times, the quantities, the locations) affected moxibustion's effects, the gastrin serum level in rats were observed. In experiment, male Spraque-Dawley rats (body wt. 140-160g) were selected. Anything is performed to normal group. Control group were only anesthetized with inhalation in normal group. Experimental group were anesthetized and cauterized with moxa at BL21 by way of direct moxibustion. The size of moxa cone is 1.6±0.2㎎. The moxibustion as 5 times a day for five days has shown most significant effects and the moxibustion as a aquantity of 1, 5, 10 times moxa united one respectly, inverse to quantity in effects. The moxibustion for five days has also shown an most significant effects. The moxibustion at unilateral acupoints BL21 have less effects than bilateral one and these effects had no difference between control group after vagotomy. This results indicate that moxibustion's effects are not direct proportion to moxa cone size and frequency but imply that there is adequate value of moxibustion.

• The Korean Journal of Physiology
• /
• 제23권2호
• /
• pp.409-420
• /
• 1989

Extracellular recordings were made from the spinal neurons in the lumbar enlargement of 16 cats before and during electrical stimulation of the radial nerve ipsilaterally and contralaterally. Only neurons activated by remote nerve stimulation (RNS) were included in sample. All the cell classes of spinal neurons which received afferents message from the skin and/or muscles were activated by RNS except LT cells. Approximately three quaters of cells activated by RNS had an inhibitory receptive field (RF) on the ipsilateral hindlimb and two thirds of RNS-activated neurons showed spontaneous activity. The most of these RNS-activated cells seemed to be in deep dorsal horn and in ventral horn as well. Stimulation of contralateral radial nerve produced activation of spinal neurons almost same degree as by ipsilateral nerve stimulation. The optimal stimulation parameters of radial nerve for activation of spinal cells were 5Hz-0.5 msec-2V while threshold stimulus for activation was approximately 0.18 V. Following close intra-arterial injection of $K^+$ ion excitability of RNS-activated neuron was increased in 4 of 8 cells whereas it was decreased in 2 of 8 cells. The results indicate that there are some spinal neurons in the lumbar enlargement of cats that can be activated by forelimb afferent $(A{\beta}\;&\;A{\delta})$ inputs.

• 한국전자파학회논문지
• /
• 제16권5호
• /
• pp.511-517
• /
• 2005

최근 성장기에 있는 청소년들의 장시간 휴대폰 사용이 건강에 유해한 영향을 미칠 수 있다는 사회적인 문제가 제기되면서 휴대폰 사용이 인체에 미치는 영향에 관한 연구가 활발하게 이루어지고 있다. 국외에서는 주로 GSM방식의 휴대폰 사용에 의한 성인의 혈압과 맥박수 변화에 대한 자원자 연구는 수행되었으나, CDMA 방식의 휴대폰 사용에 의한 청소년의 인체 영향에 관련한 연구는 거의 이루어지지 않았다. 국내의 경우에도 자원자를 대상으로 한 CDMA 방식의 휴대폰 사용이 인체에 미치는 영향에 관한 연구는 거의 없어 국내 실정에 맞는 연구가 필요하다. 파라서 본 연구에서는 청소년 21명, 성인 21명의 자원자를 대상으로 30분간 300 mW의 CDMA 휴대폰 전자파에 노출 시 맥박, 혈압 및 교감신경의 흥분을 나타내는 호흡수, 피부 저항의 변화를 정량적으로 측정하였다. 그 결과, 청소년 집단의 피부 저항에서만 변화가 있었고 그 외 모든 측정치에서는 변화가 없었다. 청소년 집단에서의 피부 저항은 휴대폰의 실제 노출 하에서 통계적으로 유의하게 감소하였고, 노출 중지 후에는 가역적 반응을 보였다.

• Animal Bioscience
• /
• 제35권5호
• /
• pp.711-720
• /
• 2022

Objective: The objective of this study was to determine the appropriate amount of eri silkworm pupae meal (Samia ricini) to add to the broiler diet. Methods: Two hundred 1-day-old male chicks with initial weight at 50.03±0.56 g/chick were divided into four groups (five replicates per group and ten chicks per replicate): a control group fed a corn-soybean diet and experimental groups supplemented with 5%, 10%, or 15% eri silkworm pupae meal. All experimental diets were isocaloric and isonitrogenous and formulated respecting nutrient requirements. Growth performances were collected during the experimental period and other parameters were collected at the end of experiment when broilers reached thirty-eight days old. Results: A higher cold carcass weight and skin yellowness in the broilers fed 10% eri silkworm pupae meal compared with the other groups (p<0.05). Therefore, supplementation with 10% eri silkworm pupae meal is suggested for the broiler diet formulation because it did not cause any serious negative consequences on growth performance, health status, carcass characteristics and meat quality. However, the usage of eri silkworm pupae meal at 15% is not recommend because it led to negative outcomes Conclusion: The addition of eri silkworm pupae at 10% can be used as an alternative protein sources for broiler chickens which provided benefits on cold carcass weight and skin yellowness without adverse effects.