• Title/Summary/Keyword: Physiological responses

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The Effects of Road Transportation on Some Physiological Stress Measures in Goats

  • Rajion, M.A.;Mohamed, I.;Zulkifli, I.;Goh, Y.M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.14 no.9
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    • pp.1250-1252
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    • 2001
  • A study to assess the physiological stress responses in goats that were subjected to road transportation was carried out using 10 Kacang crossbred does. Five does were transported in the morning with another five transported in the afternoon covering a distance of 46 km in an open-truck at an average speed of 55 km/h. Immediately following the road transportation, there were dramatic increases in neutrophil:lymphocyte ratios and plasma glucose concentrations but plasma cholesterol concentrations and body temperature were not affected. The neutrophil:lymphocyte ratios and plasma glucose concentrations appear to be reliable indicators of stress in goats.

Efficiency of Sustained Work and Its Influence on Physiological Responses in Young Bulls of Hariana Cattle

  • Yadav, A.S.;Dhaka, S.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.14 no.8
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    • pp.1062-1066
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    • 2001
  • Studies were carried out on forty young bulls of the Hariana breed (around 18 months of age) selected on the basis of their dam's milk yield at the animal farm of CCS HAU, Hisar during the period 1993-1999. Since animals showed variation in capacity to work over prolonged periods, they were subjected to regimes of carting without load and with 8 qtls. of load for three hours. The study revealed that maximum change took place in the pulse rate, followed by respiration rate and rectal temperature. The mean fatigue score for pulling an empty cart ranged between 1.66 to 2.20 after two hours work, and 2.36 to 2.73 after three hours work. For a cart loaded with 8 qtls., the corresponding ranges were 2.90 to 3.36 and 3.40 to 4.10, respectively. These results indicated that the animals under experiment had the capacity to pull moderate load (8 qtls.) for about two hours without showing any serious effect on the ability to recover and soon to work again.

A Study on the Development of a Validation Method for Driving Simulator - Recognition of the Distance & Turning Angle - (Driving Simulator 평가 수법 개발에 관한 연구 - 거리 및 선회각도 인지 -)

  • Oh, S.G.;Son, K.H.;Jeong, D.S.;Lim, J.J.;Kim, N.G.
    • Proceedings of the KOSOMBE Conference
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    • v.1998 no.11
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    • pp.135-136
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    • 1998
  • The purpose of this study is to develope a validation method for driving simulator. Physiological responses such as EOG, ECG, and driver's behaviour were measured by using actual vehicles. The characteristics of the recognition of the acceleration by the human are investigated. These results showed that physiological responses was changed by the driving environment. Subject recognized that he drove more than real distance and turning angle.

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Ecotypic Variation in Salinity Responses of Ulva pertusa(Chlorophyta) from the Korean Coast

  • Kim, Kwang-Young;Suh, Hae-Lip
    • Journal of the korean society of oceanography
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    • v.31 no.1
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    • pp.1-6
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    • 1996
  • Salinity ecotypes in Ulva pertusa Kjellman were examined for the growth responses of the three isolates taken from different salinity regimes. All isolates showed a broad salinity tolerance, but growth patterns were correlated with the salinity regime of their original habitat. The germlings from Anin exhibited optimum growth at the native salinity of 32%. The germlings from Yongyon which had hypersaline habitats were tolerable to high salinity, i.e. growth rates peaked at 40%, whereas those from Samgando which had low salinities achieved maximum growth rate at 24\%. The germlings of inter-isolate cross demonstrated intermediate growth response between that of their respective parents. Our data also clearly indicated intraspecific differences among the three isolates, which was interpreted as development of different physiological ecotypes. We conclude that U. pertusa may consist of several ecotypes, each of which has some capacity for physiological adaptation to salinity variations.

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The Effect of Job Stress Responses on Human Error (직무스트레스 반응이 인적과오에 미치는 영향)

  • Ahn, Kwan-Young;Son, Yong-Seung
    • Journal of the Korea Safety Management & Science
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    • v.13 no.4
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    • pp.53-60
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    • 2011
  • Job stress weakens physical ability causing the diseases related to working condition, decreases a production level, and increases mistakes and accidents. This study examined the relationship between job stress and human error, and focused on the moderating effect of age and maintenance type on the relationship between job stress and human error. The study used a quantitative design based on the 450 questionnaires of maintenance personnel in the Air force. The results of multiple regression analysis showed that physiological and psychological stress responses have positively related with human error. In moderating effect test, age appeared to impact on the relationship between physiological/behavioral stress and human error.

The Effect of Superior Leadership on Job Stress (상급자의 리더십이 직무스트레스에 미치는 효과: 공군 정비사를 대상으로)

  • Ahn, Kwan-Young;Son, Yong-Seung
    • Journal of the Korea Safety Management & Science
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    • v.13 no.1
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    • pp.75-80
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    • 2011
  • This paper reviewed the relationship between superior leadership and job stress responses, and the moderating effect of age in maintenance area of air force. Based on the responses from 450 air force maintenance persons, the results of multiple regression analysis showed that transactional leadership has negative relationship with physiological stress response, charisma has negative relationship with psychological stress, and individual consideration has negative relationship with behavioral stress. In moderating effects, age has negative effect on the relationship between transactional leadership and physiological stress response, and age has positive effect on the relationship between charisma and psychological stress response.

Evaluation of Physiological Responses and Subjective Sensation in Different Sock Materials (양말 소재별 인체생리적 반응 및 주관적 감각평가)

  • 김칠순;정명희
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.8
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    • pp.1475-1483
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    • 2001
  • The purpose of this study was to determine the physiological responses and subjective sensation according to fiber content of socks. Six female students participated in the wear trial test which was conducted in controled environmental chamber with 26${\pm}$1$^{\circ}C$ and 60${\times}$3%. R.H.SAS program was used for statistical analysis. The results of this study were as follows. Mean skin temperature was significantly different among three different socks. AWNP socks had the highest mean skin temperature and instep temperature. Also relative humidity in the microclimate of socks as well as heart rate were influenced by fiber content of socks, However, test of subjective sensation such as thermal, humid, comfort sensation showed that there was no significant difference among three different socks thermal sensation during the exercise and recovery period.

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Physiological and Biochemical Changes in Lucerne (Medicago sativa) Plants Infected with 'Candidatus Phytoplasma australasia'-Related Strain (16SrII-D Subgroup)

  • Ayvaci, Humeyra;Guldur, M. Ertugrul;Dikilitas, Murat
    • The Plant Pathology Journal
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    • v.38 no.2
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    • pp.146-158
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    • 2022
  • Changes in physiological and biochemical patterns in lucerne plants caused by the presence of 'Candidatus Phytoplasma australasia', which is one of the significant pathogens causing yield losses in lucerne plants, were investigated. Significant differences were evident in total chlorophyll, chlorophyll a, chlorophyll b, and protein amounts between 'Ca. Phytoplasma australasia'-positive and negative lucerne plants. Stress-related metabolites such as phenol, malondialdehyde, and proline accumulations in 'Ca. Phytoplasma australasia'-positive plants were remarkably higher than those of phytoplasma-negative plants. As a response to disease attack, phytoplasma-positive plants exhibited higher antioxidant enzymes (peroxidase and catalase) and nonenzymatic metabolite responses such as jasmonic and salicylic acids. We state that partial disease responses were revealed for the first time to breed resistant lucerne lines infected by 'Ca. Phytoplasma australasia'.

Comparative physiological and proteomic analysis of leaf in response to cadmium stress in sorghum

  • Roy, Swapan Kumar;Cho, Seong-Woo;Kwon, Soo Jeong;Kamal, Abu Hena Mostafa;Kim, Sang-Woo;Lee, Moon-Soon;Chung, Keun-Yook;Woo, Sun-Hee
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.124-124
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    • 2017
  • Cadmium (Cd) is of particular concern because of its widespread occurrence and high toxicity and may cause serious morpho-physiological and molecular abnormalities in in plants. The present study was performed to explore Cd-induced morpho-physiological alterations and their potentiality associated mechanisms in Sorghum bicolor leaves at the protein level. Ten-day-old sorghum seedlings were exposed to different concentrations (0, 100, and $150{\mu}M$) of $CdCl_2$, and different morpho-physiological responses were recorded. The effects of Cd exposure on protein expression patterns in S. bicolor were investigated using two-dimensional gel electrophoresis (2-DE) in samples derived from the leaves of both control and Cd-treated seedlings. The observed morphological changes revealed that the plants treated with Cd displayed dramatically altered shoot lengths, fresh weights, and relative water content. In addition, the concentration of Cd was markedly increased by treatment with Cd, and the amount of Cd taken up by the shoots was significantly and directly correlated with the applied level of Cd. Using the 2-DE method, a total of 33 differentially expressed protein spots were analyzed using MALDI-TOF/TOF MS. Of these, treatment with Cd resulted in significant increases in 15 proteins and decreases in 18 proteins. Significant changes were absorbed in the levels of proteins known to be involved in carbohydrate metabolism, transcriptional regulation, translation and stress responses. Proteomic results revealed that Cd stress had an inhibitory effect on carbon fixation, ATP production and the regulation of protein synthesis. In addition, the up-regulation of glutathione S-transferase and cytochrome P450 may play a significant role in Cd-related toxicity and stress responses. Our study provides insights into the integrated molecular mechanisms involved in response to Cd and the effects of Cd on the growth and physiological characteristics of sorghum seedlings. The upregulation of these stress-related genes may be candidates for further research and use in genetic manipulation of sorghum tolerance to Cd stress.

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The Effects of Kangaroo Care on Maternal Self-esteem and Premature Infants' Physiological Stability

  • Lee, Ji-Hye;Bang, Kyung-Sook
    • Women's Health Nursing
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    • v.17 no.5
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    • pp.454-462
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    • 2011
  • Purpose: This paper identified the effects of kangaroo care (KC) on maternal self-esteem and the growth and physiological stability of premature infants hospitalized in the neonatal intensive care unit. Methods: The experiment was conducted with an experimental group of 17 infants, and a control group of 17 infants selected by convenience sampling. KC was given to the infants one time a day for 30 minutes after feeding for two weeks. Their weight was measured every morning, and their physiological stability was measured in terms of their body temperature, respiratory rate, heart rate, oxygen saturation, and stability of the cardio-respiratory system in premature infants (SCRIP) score, as physiological responses at every 10 minutes during the intervention. Maternal self-esteem was assessed by a maternal self-report inventory. Results: The experimental group showed significant increase in the self-esteem of mothers. Also, KC was effective on physiological stabilization of preterm infants. Conclusion: This study suggests that KC can be provided in clinical settings more widely in Korea as one of the nursing interventions aimed at promoting maternal self-esteem as well as infants' physiological stabilization.