• 한국미생물생명공학회:학술대회논문집
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• 한국미생물생명공학회 1986년도 추계학술대회
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• pp.522.2-522
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• 1986

In order to optimally induce sporulation and toxin formation in Bacillus thuringiensis, exhaustion of specific nutrients as well as resuspension experiments were tried. Sporulation and toxin formation was most abunduntly occurred when the growth was limited by carbon source. It was also occurred in a resuspension medium containing only distilled water. Various environmental and physiological factors affecting the efficiencies of spore and toxin formation were examined in chemically defined media. As a result of these studies, a batch fermentation resulted in higher spore and toxin yield than ever reported

• 대한한의학회지
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• 제18권2호
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• pp.5-14
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• 1997

This paper documents a study of the physiology of the lung. The aim of this paper is to better comprehend the physiological function of lung. To this end, the relationship between the physiological function of the lung and the characteristics of the 'Keum Un Qi Hua'(金運氣化), and the functional changes of the lung and its surrounding physiological systems have been studied in their relationship to the concept of the organism as a whole. The results of this study are as follows; The function of the lung is comprehended as corresponding to the 'Keum Un Qi Hua'. In visceral phenomenon, the lung has specific relations with the large intestine(大腸), nase(鼻), skin and hair(皮毛), sweat gland(汗孔), nasal mucus(涕), spirit(氣魄), grief and melancholy(憂 悲), the lung channel of hand-taiyin(手太陰肺經), the large intestine channel of hand-yangming(手陽明大腸經). This is called ‘the physiological systems of the lung’, and because these mutual relations reflect the functional changes of the lung, it is applied as the elementary knowledge to diagnose and treat the lung. For instance, a deficiency of the 'Qi‘ of the lung brings on an unconsolidated defending energy whose manifestations are sweating spontaneously as well as being susceptible to the common cold due to a diability in fighting against external pathogenic factors. Invasion of the lung by external pathogenic factors blocks the movement of the 'Qi' of the lung, which results in nasal obstraction. watery nasal discharge and a hyposmia. So the physiological functions and pathological changes of the lung can be determined by observing ’the physiological systems of the lung‘ based on the precepts of oriental medicine. As a result, the function of the lung is to be understood based on the characteristics of the 'Keum Un Qi Hua'. Furthermore we can know that the physiological systems of the lung mirrors the functional changes of the lung.

• Annals of Clinical Neurophysiology
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• 제1권2호
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• pp.118-125
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• 1999

Background and Aims : Nerve conduction study is invaluable in clinical neurology, especially for assessing peripheral neuropathies. Abnormal nerve conduction studies may result not only from peripheral nerve dysfunction itself, but also from other various mechanical, technical, and physiological factors such as age, sex, height and temperature. So we conducted this study to establish the our own normal values. Methods : In this study, from March. 1997 to July. 1998, 40 Korean adults among person came to Health Promotion Center over the age of 20 without any suspicion of neurological deficits were analysed to determine the effect of compound effects of several physiological factors. Results : The nerve conduction velocities of the upper extremity and proximal segments were faster than those of the lower extremity and distal segments. Physiological factors such as age, height and temperature affect the results of nerve conduction studies in multiple regression analysis. The sex difference is recognized over peroneal motor nerve. There are no sex differences in amplitude transformed into normal distribution. The significant physiological factor affecting the amplitude of nerve conduction is age, whereas height and temperature play no role. Conclusions : In multiple regression analysis, height is widespread variable for the nerve conduction velocities and temperature is important variable for lower extremities. The parametric statistical analysis cannot be applied to the amplitude of the compound muscle or nerve action potentials because of marked left shift in distribution. Sqareroot transformation of the CMAP and CNAP may be useful in normalizing the distribution. The most significant physiological factor affection the amplitude is age. Sex differences are not seen in nerve conduction study.

• 임상간호연구
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• 제23권2호
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• pp.258-266
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• 2017

Purpose: The study aimed to examine quality of sleep in hemodialysis patients and explore physical, physiological, and psychological factors determining sleep quality. Methods: The survey was conducted among 165 patients on maintenance hemodialysis at a university hospital. Data were collected from July to October in 2015. The sleep quality and its related factors were assessed by standardized questionnaires, anthropometric measures, and lab tests after obtaining a written consent from the participant. Results: The mean age of the participants was 62.58 years old, and 67.9% of the participants experienced sleep disorders such as 'not falling asleep within 30 minutes' or 'frequently waking up at night'. Pain (t=-3.29, p=.007) and depression (t=-6.028, p<.001) were significantly different between the group with sleep disorder and the other without. The demographic factors (age, shared room, sleep during the day), physical factors (pain and symptom), and psychological factors (depression and trait and status anxiety) together explained 20.0% of variance in sleep quality. Conclusion: Sleep disorder was frequently experienced among the patients on maintenance hemodialysis. The effective nursing strategies should focus on sleep environment, pain and depression management. Further study is warranted to explore the effect of physiological factors related to the disease on sleep disorder in this population.

• Journal of Nutrition and Health
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• 제25권7호
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• pp.656-667
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• 1992

This study was designed to investigate the effect of environmental an d physiological factors on bone mineral density(BMD) of the lumbar spine(L2longrightarrowL4) in 41 postmenopausal women. There were a positive relationships between BMD of the lumbar spine and monthly income food expenses pocket money energy expenditure(EXP) per day sociocultural EXP activity intensity time of standing and walking or age at first pregnancy. BMD of the lumbar spine was negatively correlated with age Engel index time of sleeping and sitting number of childbirty and children period of breastfeeding or menopausal period. But there were no significant relationships between BMD and physiological domestic EXP body mass index age at menar-che menstruation cycle or age at menopause. The complex interrelations between BMD and these variables were examined using stepwise multiple regression analysis. From this analysis in subject aged 50~59 years. EXP per body weight physiological EXP age at menopause time of sleeping were positively significant independent predictors of BMD. In subjects aged 60~69 years, . time of walking only and in total subjects. EXP per body weight pocket money were positively significant independent predictors ofBMD. This study suggest that EXP and pocket money are major constituents affection lumbar spine BMD in postmenopausal women.

• Journal of Biosystems Engineering
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• 제38권2호
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• pp.163-170
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• 2013

Purpose: The purpose of this study is to provide analysis of physiological, biomechanical responses occurring from the operation to lifting or twist lifting task appears frequently in agricultural work. Methods: This study investigated the changes of physiological factors such as heart rate, heart rate variability (HRV) and biomechanical factors such as physical activity and kinetic analysis in the task of twisting at the waist while lifting. Results: Heart rates changed significantly with the workload. The result indicated that the workload of 2 kg was light intensity work, and the workload of 12 kg was hard intensity work. Physical activity increased as the workload increased both on wrist and waist. Besides, stress index of the worker increased with the workload. Dynamic load to herniated discs was analyzed using inertial sensor, and the angular acceleration and torque increased with the workload. The proposed measurement system can measure the recipient's physiological and physical signals in real-time and analyzed 3-dimensionally according to the variety of work load. Conclusions: The system we propose will be a new method to measure agricultural workers' multi-dimensional signals and analyze various farming tasks.

• Journal of Ginseng Research
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• 제6권2호
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• pp.168-203
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• 1982

Effects of soil moisture on growth of Panax ginseng, of various factors on soil moisture, and of moisture on nutrition, quality, physiological disorder, diseases and insect damage were reviewed. Optimum soil moisture was 32% of field capacity with sand during seed dehiscence, and 55-65% for plant growth in the fields. Optimum soil moisture content for growth was higher for aerial part than for root and higher for width than for length. Soil factors for high yield in ginseng fields appeared to be organic matter, silt, clay, agreggation, and porosity that contributed more to water holding capacity than rain fall did, and to drainage. Most practices for field preparation aimed to control soil moisture rather than nutrients and pathogens. Light intensity was a primary factor affecting soil moisture content through evaporation. Straw mulching was best for the increase of soil moisture especially in rear side of bed. Translocation to aerial part was inhibited by water stress in order of Mg, p, Ca, N an Mn while accelerated in order of Fe, Zn and K. Most physiological disorders(leaf yellowing, early leaf fall, papery leaf spot, root reddening, root scab, root cracking, root dormancy) and quality factors were mainly related to water stress. Most critical diseases were due to stress, excess and variation of soil water, and heavy rain fall. The role of water should be studied in multidiciplinary, especially in physiology and pathology.

• Journal of Korean Biological Nursing Science
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• 제5권2호
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• pp.5-12
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• 2003

Purpose : The purpose of this study was to identify the relationship between fatigue and physiological factors in patients on hemodialysis. Method : Data were collected between June 1 and 7, 2003 using a structured questionnaire which included general characteristics, Visual Analogue scale and laboratory result. Result : Fatigue score changes is the mean of predialysis fatigue score was 4.36 and postdialysis fatigue score 4.66. There were statistically significant differences in score of postdialysis to sex, education and admission. The relationship between predialysis fatigue and interdialytic weight gain showed a positive correlation. The relationship between postdialysis fatigue and Cr showed a negative correlation. Conclusion : Nursing Management program should be developed to fatigue factors in patients on hemodialysis.

• 한국주거학회논문집
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• 제7권2호
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• pp.79-89
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• 1996

In this paper, various characteristics-physiological, psychological and social peculiarities \ulcorner of the elderly are analyzed. Then planning factors of living environment are studied to grope directions on design of living spaces for the aged in the future, which is pertinent to their needs.The peculiar properties of the elderly are analyzed and planning factors of architectural spaces are studied by referring to sundry records from many branch \ulcorner gerontology, medical science, psychology, sociology, etc. \ulcorner of knowledge. In planning house for the aged, we have to consider their physiological, psychological, social characteristics and build many types of living spaces in order to meet their special needs in mind, to maintain their living styles. because their personalities, human relations, living patterns, and so forth have been formd individually for a long period of time and their present conditions are different respectively.

• 생명과학회지
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• 제16권4호
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• pp.584-588
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• 2006

본 연구는 평소 신체활동이 부족한 여성 노인들에게 스트레칭을 포함하는 요가운동 및 레크리에이션이 여성노인의 심리적 변화, 생리적 변화 및 운동능력에 미치는 영향을 밝히고자 수행되었다. 본 연구의 결과로 규칙적인 요가 운동이 체지방, 혈압, 콜레스테롤 등을 감소시키고, 우울증의 감소와 더불어 삶의 만족도와 일상 생활도를 증가시키며, 협응성, 민첩성, 평형성 등을 포함하는 체력을 증가 시켰다. 이러한 실험결과를 바탕으로 여성노인들에 대한 과학적인 운동치료에 관한 연구가 시급히 이루어져야 할 것으로 여겨진다.