• International Journal of Human Ecology
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• v.14 no.2
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• pp.93-103
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• 2013

This study investigated the relationship of clothing microclimate and physiological responses in order to examine the layering effects on the clothing microclimate as an index to predict clothing thermal insulation ($I_{cl}$). Experiments were conducted in a $15^{\circ}C$ environment on six physically active males. Increased clothing layers resulted in higher mean temperature inside the clothing ($\bar{T}_{cl}$) and $I_{cl}$. The $I_{cl}$ had a high correlation with: $\bar{T}_{cl}$ (r = 0.556), the difference between the innermost surface temperature and the outermost surface temperature at the chest (DST) (r = 0.549) and the temperature inside clothing at the abdomen (r = 0.478). $\bar{T}_{cl}$ had the highest correlation with the temperature inside clothing at the abdomen (r = 0.889). $\bar{T}_{cl}$ also had the highest correlation with $\bar{T}_{sk}$ (r = 0.860). The results showed that the relationship between $I_{cl}$ and $\bar{T}_{cl}$ was linear (p < .01). Thermal comfort had a negative correlation with $\bar{T}_{cl-thigh}$ (r=-0.411) and $\bar{T}_{cl}$ (r = -0.323) (p < .01.)

• Korean Journal of Fisheries and Aquatic Sciences
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• v.49 no.2
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• pp.184-189
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• 2016

We investigated physiological changes in the freshwater cichlid, fish Maylandia lombardoi in response to different calcium concentrations in rearing water. Four different calcium concentrations (0, 2, 4 and 8 mM) were prepared in rearing water by the addition of ionized calcium (CaO) to examine the effect of various calcium concentrations in rearing water on physiological changes in the cichlid fish, M. lombardoi. Total calcium concentrations in plasma and body increased in a calcium concentration-dependent manner and reached the maximum at 8-mM calcium concentration. Stress-related cortisol was significantly decreased in the 8-mM group compared to the control group (0 mM). Lysozyme activity also significantly decreased in the 8-mM group. These results suggest that CaO in rearing water increases calcium uptake in fish and affects the body by decreasing stress and improving immunity in fish.

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.195-195
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• 2017

The water in the crop cultivation shows difference according to the variety of crop, cultivations period and climatic condition. The growth and development, quantity and fruit enlargements are affected by soil water conditions. In previous study, leaf area and photosynthesis are decreased by lower soil moisture. Other research reported that excess moisture condition at vegetative and reproductive growth period in cultivation of soybean caused highest reduction in crop growth rate (CGR) and dry weights of plant parts. In particular, the damage was bigger during vegetative growth stage than reproductive growth period. Soybean (Glycine max (L.) Merill) is useful and popular crop throughout the world. It is very popular crop in Korea, China, Japan and other Asian countries. Soybeans used in various way including soybean sprouts, paste, soymilk, oil and tofu. Two soybean cultivars grown in four different irrigation conditions were determined for physiological responses. In this study, we examined leaf area (LA), leaf dry weight (LDW), specific leaf area (SLA), root dry weight (RDW) and shoot height (SH) in different water conditions. 50mL/9day irrigation periods showed the lowest contents in LA, LDW, RDW, SH. Water deficit caused increase of leaf Water saturation deficits (WSD), Cheongjakong 3 and Taekwangkong showed increase of leaf water saturation deficits (WSD) in drought conditions and leaf water potential and stomatal conductance were decreased. Photochemical efficiency was decreased in 50mL/1day irrigation condition while, there was decrease of growth and development in 50mL/9day with drought.

• Journal of the Korean Society of Costume
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• v.63 no.5
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• pp.102-114
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• 2013

This study performed the evaluation of skin temperature, heart rate, humidity and temperature inside clothing, and subjective sensation to estimate the physiological responses of the human body and its feeling of comfort for developing value-added dox fabric. Experiments were performed on five healthy adult women whose average age was 21, at climate chamber in which temperature, relative humidity and air current were set up below $28{\pm}5^{\circ}C$, $50{\pm}10%$, 0.2m/s, respectively. Two kinds of clothes were used for the experiments: 100% cotton and dox clothes. The clothes were identical in size and form, and the attire consisted of long-sleeved shirts, long trousers, and socks. The experiment was performed for 30 minutes using ergometer. The results are as follows. 1) It showed low skin temperature of forearm, breast, back, forehead and lower leg in exercise, but high skin temperature of them in recovery. However skin temperature of thigh and foot increased from rest to recovery. 2) It showed significant difference (p<0.001, p<0.01) in average skin temperature between cotton and dox clothes. Cotton clothes had a higher average skin temperature compared to dox. Not only was there a significant difference in temperature inside clothing (p<0.001), this was also the case with humidity inside the clothing (p<0.001).

• Journal of the Korean Institute of Telematics and Electronics
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• v.22 no.6
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• pp.28-33
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• 1985

ISFETS for physiological applications have been developed using the techniques for integrated circuit fabrication. The silicon nitride layer was used as a H+ sensing membrane. However, K+, Na+ and Ca++ sensing ISFETS were fabricated by forming tach specification sensing membranes over the silicon nitride gate insulator. The sensitivities of the fabricated devices were very good. The typical values of measured sentivities were iEmV/pH, 42mv1, pH,5 gmV/pNa and 28mv1p0a. However, the selectivity and stability should be somewhat improved for practical physiological uses with good reliability. The response times were, less than one second, short enough for the practical uses in physiological applications.

• Journal of Microbiology and Biotechnology
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• v.21 no.11
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• pp.1184-1192
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• 2011

A bacterial isolate (strain JS-2) characterized as Bacillus sp. was challenged with high concentrations of toxic selenite ions. The microbe was found to transform the toxic, soluble, colorless selenite (${SeO_3}^{2-}$) oxyions to nontoxic, insoluble, red elemental selenium ($Se^0$). This process of biotransformation was accompanied by cytoplasmic and surface accumulation of electron dense selenium ($Se^0$) granules, as revealed in electron micrographs. The cells grown in the presence of selenite oxyions secreted large quantities of extracellular polymeric substances (EPS). There were quantitative and qualitative differences in the cell wall fatty acids of the culture grown in the presence of selenite ions. The relative percentage of total saturated fatty acid and cyclic fatty acid increased significantly, whereas the amount of total unsaturated fatty acids decreased when the cells were exposed to selenite stress. All these physiological adaptive responses evidently indicate a potentially important role of cell wall fatty acids and extracellular polymeric substances in determining bacterial adaptation towards selenite-induced toxicity, which thereby explains the remarkable competitiveness and ability of this microbe to survive the environmental stress.

• Journal of Sasang Constitutional Medicine
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• v.33 no.2
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• pp.25-36
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• 2021

Objectives The aim of this study was to reveal the difference of body shape, personality, physiological characteristics between migrant Vietnam and Daejeon women using propensity matching. Methods The number of 274 Vietnamese migrant women and Daejeon city women participate in this study. We surveyed Sasang Constitution (SC) expressive factor, such Body Mass Index (BMI) using Korea Sasang Constitutional Diagnostic Questionnaire (KS-15). A Chi-square test and a T-test were used. Significant p was .05. Results The height, weight and BMI of Daejeon women was bigger than those of Vietnam(p<.001). There was significant difference in personality characteristics in 'broad mind-narrow mind'(p<.001), 'Active-Passive'(p<.001), 'Masculine-Feminine'(p=.002). There was significant differentce in physio-pathological symptom in 'digestion'(p<.001), 'urine time'(p<.001), 'feeling cold/heat'(p=.006). There was significant differentce in distribution of SC between Vietnam and Daejeon women(p=.025). Conclusions This study reveals that there is differentce in body shape, personality, physiological characteristics between Vietnam and Daejeon women. These factors might influence on SC distribution between Vietnam and Dajeon women

• International conference on construction engineering and project management
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• 2015.10a
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• pp.336-338
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• 2015

This research is to propose an applicable framework for real-time health surveillance and safety monitoring at construction sites. First this study aims at finding (1) a framework for health surveillance that is likely to benefit employers and employees in the industry, (2) a valid way to identify factors or conditions with potential health concerns that can occur under particular work conditions, (3) An effective way to apply wireless/mobile sensors to construction workers using real-time/live data transmission methods, and (4) A relationship between a worker's vital signs and job site environment. Biosensors for physiological response and devices for weather/work related data are to collect real-time data. Relationships between jobs and physiological responses are analyzed and factors that touched particularly contributing to certain responses are identified. When data are incorporated with tasks, factors affecting tasks can be identified to estimate the magnitude of the factors. By comparing work and normal responses possible precautionary actions can be considered. In addition, the study would be lead to improving (1) trade-specific dynamic work schedules for workers which would be based on various factors affecting worker health level and (2) reevaluating worker productivity with health status and work schedule, thereby seeking ways to maximize worker productivity. Through a study, the paper presents expected benefits of implementing health monitoring.

• The Korean Journal of Physiology
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• v.6 no.2
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• pp.1-8
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• 1972

A study was planned to see if the mammillary bodies have any influence upon orienting response Thirty-nine male rats were divided into two groups. One group of animals received electrolytic lesion of the mammillary bodies through stereotaxically implanted electrodes (mammillary body group), and the other group received the same treatment short of electrolytic lesion(operated control group). All animals were tested for orienting response 3 weeks after surgery. Orienting response was regarded as elicited when an animal in alertness ceased ongoing activity upon 1,000 Hz tone presentation and/or turned head toward the source of stimulus. Weak (momentary and inconspicuous) and strong (marked and more persistent) responses were discriminated. Occurrence and duration of orienting response were measured, and the rate of habituation was estimated in 20 trials. Shift of attention from sound to light stimulus (10 trials) as well as orienting response of thirsty animals to sound stimulus while drinking (5 trials) and while at rest (5 trials) were also tested. 1. Simple orienting respons to sound stimulus tended to occur more often and its duration tended to be shorter in the mammillary body group than in the operated control group. 2. With repetition of trials, the occurrence of orienting response in each trial decreased progressively in both groups (habituation). However, the rate of habituation was significantly less prominent in the mammillary body group than in the operated control group. 3. Under attention·shift situation, orienting response tended to occur less often and its duration tended to be shorter in the mammillary body group than in the operated control group. 4. Orienting response to sound stimulus while drinking to quench thirst tended to occur more often and its duration tended to be shorter in the mammillary body group than in the operated control group. In quiet state, however, there existed no group difference with regard to the occurrence and duration of the orienting response. Although no obvious inference can be drawn from the above results, they may suggest the mammillary bodies being involved in the orienting response as a control mechanism inhibitory to the occurrence and facilitatory to the habituation of the response.

• The Korean Journal of Physiology
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• v.23 no.2
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• pp.401-408
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• 1989

This study was conducted to investigate whether an electrical stimulation of medial amygdaloid nucleus in rats increases pancreatic secretion. And an involvement of vagus nerve or plasma secretin in this process was also studied. In fasting rats anesthetized with urethane, a monopolar stainless steel electrode was stereotaxically inserted into the right medial amygdaloid nucleus. Pancreatic juice was collected for 20 minutes, during which physiological saline or 0.01 N HCI (0.18 ml/min) was perfused into the duodenum with or without bilateral subdiaphragmatic vagotomy. In the medial amygdaloid group, an electrical stimulation was continuously applied to the medial amygdaloid nucleus during the perfusion period. After collection of pancreatic juice, blood was drawn from the abdominal aorta for determination of the plasma secretin level. The results were as follows: 1) The electrical stimulaion of the medial amygdaloid nucleus did not influence the pancreatic secretion in response to intraduodenal saline perfusion. 2) The stimulation of the medial amygdaloid nucleus significantly increased the pancreatic secretory response (volume, bicarbonate output) to the intraduodenal 0.01 N HCI perfusion, and the increases were abolished by vagotomy. 3) The plasma secretin concentration after the intraduodenal 0.01 N HCI perfusion was higher than that after the saline perfusion. However, neither the electrical stimulation of the medial amygdaloid nucleus nor vagotomy affected the plasma secretin concentration during the intraduodenal perfusion with saline or 0.01 N HCI. It is, therefore, suggested that the medial amygdaloid nucleus facilitates the pancreatic secretion (volume, bicarbonate) elicited by intraduodenal HCI perfusion through the vagus nerve.