• Title/Summary/Keyword: Acclimatization

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Observations on Normal Body Temperatures in Differently Climate Conditions

  • Nguyen, My-Hang;Hiromi Tokura
    • Journal of Photoscience
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    • v.9 no.2
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    • pp.406-408
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    • 2002
  • In order to know the characteristics of circadian rhythms in core temperature in tropical inhabitants, we measured rectal temperatures every 10 min for 24 hrs in 6 Vietnamese, 20 - 22 yrs (5 males and I females) under natural conditions. Average light intensity was 16000 lx. Ambient temperatures ranged from 33 to 36 oC. These data obtained were compared with those in Japanese setters and the Polish inhabitants. The participants were sitting mostly during wakefulness and lying in bed during sleep. The results obtained are summarized as follows: I) The average maximum value was 37.7 oC, which was significantly higher than in the Japanese and Polish as well. 2) The average minimum value was 36.4 oC, which was also lower. 3) A range of oscillation was 1.3 oC, which was clearly greater than in the people living in the temperate areas. The higher maximum value of core temperature, which was actively regulated under warm temperature, seemed of adaptive significance in order to reduce water consumption. A greater rage of oscillation in tropical Vietnamese people might have ecological significance for efficient acclimatization in the environment with strong light intensity and high ambient temperature, suggesting that the setpoint of core temperature could show a greater range of oscillation.

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Effect of Recombinant Bovine Somatotropin (Boostin-250) on Blood Metabolites and Milk Yield of Lactating Buffaloes

  • Mishra, A.;Shukla, D.C.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.9
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    • pp.1232-1235
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    • 2004
  • In order to investigate the effect of recombinant bovine somatotropin (rbST) on blood metabolites and milk yield of lactating buffaloes, 30 lactating buffaloes after acclimatization for 30 days were divided into 2 groups as control (n=10) and experimental (n=20). Animals were injected 250mg of rbST (Boostin-250) on 0, $14^{th}$ and $28^{th}$ day subcutaneously at ischiorectal fosse, where as control animals were given placebo of 2 ml normal saline. Fortnightly blood samples were collected from 15 days prior to 60 days post injection to estimate different blood metabolites. Daily milk yield was recorded and weekly average yield of each animal was calculated. From this study, it was found that blood metabolites such as glucose, triglycerides, total proteins, albumin, globulin and electrolytes like sodium and potassium were not altered by rbST injection. However, there was a significant (p<0.05) decrease in blood urea nitrogen (BUN) concentration in experimental group as compared to that of control group. The weekly average milk yield was significantly (p<0.001) higher (25%) in rbST injected group over the control group.

In vitro Propagation and Ex vitro Rooting of Tectona grandis (L.f ), APNBV-1 Clone

  • Ramesh, Kommalapati;Chandra, Mouli Kalla;Vijaya, Tartte
    • Journal of Forest and Environmental Science
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    • v.25 no.2
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    • pp.119-126
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    • 2009
  • An efficient in vitro plant regeneration system was developed through shoot proliferation from axillary buds of Tectona grandis (L.f), APNBV-1 (Andhra Pradesh North Badrachalam Venkatapuram-1) clone. Multiple shoots of high quality were produced in vitro from axillary bud explants. An average of 4.39 shoots/explant were obtained on Murashige and Skoog's (MS) medium supplemented with plant growth regulators (PGRs) benzyl amino purine (BA), kinetin (KN), indole acetic acid (IAA), gibberillic acid ($GA_3$), growth adjuvants casein hydrolysate (CH), adenine sulphate (Ads) and antioxidants ascorbic acid, polyvinyl pyrrollidine (PVP). Eighty five percent of rooting was observed in ex vitro rooting media containing IBA and vermiculite. In ex vitro rooting, single shoots with 2 to 3 nodes were subjected to IBA of different concentrations at different periods of time intervals. Direct rooting in vermiculite at 500 ppm concentration of IBA resulted in 4.3 number of roots with 2 cm length. Minimum response of rooting and length of roots were recorded at 100 ppm concentration of IBA. Planlets were transferred to plastic bags for short acclimatization stage in green house where they survived at 95%.

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Effects of Sojongchobisunki-tang on Cisplatin-induced Rat Acute Renal Failure (소종조비순기탕(消腫調脾順氣湯)이 Cisplatin으로 유발(誘發)된 흰쥐의 급성신부전(急性腎不全)에 미치는 영향)

  • Yoon, Gyeong-Min;Kang, Seok-Bong
    • The Journal of Internal Korean Medicine
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    • v.32 no.2
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    • pp.278-287
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    • 2011
  • Objectives : The object of this study was to observe the nephroprotective effects of Sojongchobisunki-tang (SCST), which has traditionally been used as Korean medicine for treating various renal diseases, on cisplatin-induced rat acute renal failure. Methods : Three different dosages of SCST were orally administered once a day for 23 days before cisplatin treatment (5 mg/kg, single intraperitoneally administered) and 5 days after cisplatin treatment (once a day for 28 days). 6 groups, of 8 rats per group were used in the present study after 7 days of acclimatization. Changes of the body weight, kidney weight, serum BUN and creatinine levels were observed, as well as changes of the kidney MDA and GSH contents. The results were compared with captopril 100 mg/kg of which the effects on cisplatin-induced acute renal failures are already confirmed. Results : Acute renal failure induced by cisplatin were induced by oxidative stress and related lipid peroxidation in the present study. However, these acute renal failures and inhibition of antioxidant effects induced by cisplatin were dose-dependently reduced by treatment at all three different dosages of SCST extracts. Conclusions : This study suggests that SCST extracts showed favorable effects on the cisplatin-induced rat ARF.

Seasonal Variations in the Basal Metabolic Rate of Korean Airmen Volunteers (한국인 기초 신진대사량의 계절에 따른 변동)

  • Lee, Kae-Yol;Chee, Sun-Ho;Hong, Seung-Kil;Sung, Yang-Ho
    • The Korean Journal of Physiology
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    • v.6 no.2
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    • pp.23-30
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    • 1972
  • Contrary to most of European and American investigators failed to find out the seasonal variations of basal metabolic rate in man, Japanese and Korean investigators reported the increase in winter, decrease in summer season. But the causes of variation were not found clearly. To find out whether metabolic acclimatization to climate could be arise or not in human being, the basal metabolic rate was determined monthly for a period of one year in Airmen volunteers who live in Seoul, with 9 l Collins spirometer. The results obtained were as follows: 1. The average ambient temperature was lowest in February $(-5.88^{\circ}C)$ and highest in July $(27.34^{\circ}C)$. 2. Basal metabolic rate was lowest in June and highest in December showing seasonal variations. Interestingly, the increase of basal metabolic rate followed after the drop of ambient temperature below $0^{\circ}C$ (December) and the decrease followed after the elevation of ambient temperature from optimum to hot (June) or cold to warm (March). 3, Mean skinfold thickness increased in spring, decreased in winter. 4. These findings indicate that the basal metabolic rate of Korean reveals the seasonal variation affected by ambient temperature highly.

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Rapid Micropropagation of Hovenia dulcis Thunb. Through in vitro Stem Nodal Cultures

  • Park, Dong-Jin;Kang, Young-Min;Jung, Ha-Na;Min, Ji-Yun;Kim, Yong-Duck;Karigar, Chandrakant S.;Choi, Myung-Suk
    • Journal of Korean Society of Forest Science
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    • v.95 no.2
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    • pp.155-159
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    • 2006
  • An efficient method for in vitro propagation of the medicinal plant Hovenia duleis, was established. Plantlets for micropropagation of H. dulcis were obtained from in vitro germinated seeds. The effectiveness of various levels of cytokinins (BAP, Kinetin and TDZ) on multiple shoot formation from stem nodes was tested. BAP (1.0 mg/L) treatment induced highest number of multiple shoots. The growth pattern of plantlet on various culture media was undertaken. The shoot elongation was optimal on 2MS basal medium without growth regulators. The in vitro rooting ability of H. dulcis shoots was examined with two-auxins IAA and IBA. The IAA (1.0 mg/L) treatments induced earliest rooting with maximum number of roots and root growth. Rooted shoots were transferred directly to small pots with artificial soil and such established plant exhibited a normal growth pattern similar to wild plantlet.

Regeneration and selection of root resistant Coleus forskohlii A threatened medicinal plant

  • George, Manju M.;Ssubramanian, R.B.;Prajapati, Hiren A.
    • Plant Resources
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    • v.4 no.2
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    • pp.65-74
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    • 2001
  • Coleus forskohlii Briq, of the family Lamiaceae yields a valuable secondary metabolity known as forskolin which is a labdane diterpenoid.. Coleus forskohlii is the only known source of this compound. Forskolin is used in medicine for the treatment of glaucoma, congestive cardiomyopathy and asthma. Morphogenic callus was induced from young leaves on MS medium augmented with NAA and BA. These calli, when subcultured on MS with KN alone gave rise to shoots. The regenerated shoot developed good root system on MS medium fortified with NAA. The fully grown plantlets were transferred to soil for acclimatization. Coleus plant is mainly infected by a fungi Lasiodiplodia theobromae which causes root rot disease. The fungal culture filterate (ECE) of Lasiodiplodia theobromae, has been used in regeneration media to find the MIC and further to select resistant plants to the pathogen. In the present study 40% ECF in the medium showed maximum inhibition and is there fore considered as the MIC level of Coleus forshohlii. This data could prove to be useful for the future for selecting a resistant C.forskohlii plant against the root disease caused by L. theobromae.

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Plant Regeneration through Somatic Embryogenesis from Embryogenic Callus of Lacquer Tree (Rhus vernicifera Stokes) (참옻나무(Rhus verniciflua)배발생캘러스로부터 체세포배발생에 의한 식물체 재분화)

  • Kim, Jae-Whune;Lee, Won-Seok;Kwon, Ki-Won;In, Jun-Gyo;Choi, Yong-Eui
    • Journal of Plant Biotechnology
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    • v.30 no.3
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    • pp.275-279
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    • 2003
  • Excised cotyledons and embryo axises of zygotic embryos of Rhus vemicifera were cultured on Murashige and Skoog(MS) medium with various concentrations of 2,4-D. About 3-5% of explants produced callus. Embryogenic callus was preferentially induced from basal parts of embryo axis of zygotic embryos seeds when they were cultured without removal of seed coats. Somatic embryos were developed from embryogenic callus in growth regulator-free medium after 2-3 subcultures on medium with 1.0mg/L 2,4-D and these embryos were matured to cotyledonary stage. Plantlets with well-developed shoots and roots from embryos were obtained on $\frac{1}{4}$MS medium with GA$_{3}$. After acclimatization of plantlets on artificial soil, they were exposed to soil pots.

Adaptation Experience of Living Kidney Donors after Donation (생체 신장 공여자의 공여 후 적응 경험)

  • Kang, Da-Hai-Som;Yang, Jinhyang
    • Journal of Korean Academy of Nursing
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    • v.46 no.2
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    • pp.271-282
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    • 2016
  • Purpose: This study was done to explore adaptation experience of living kidney donors after donation. Specific aims were to identify challenges donors face in the process of adaptation following surgery and how they interact with recipients and other people. Methods: Grounded theory methodology was utilized. Participants were 13 living kidney donors at six months or more after donation. Data were collected by in-depth interviews with individual participants. Data were analyzed using constants comparative method with theoretical saturation. Results: A core category emerged as 'keeping the fences of my family in spite of vulnerability'. The adaptation process after donation was manifested in four phases: exploration, balance, maintenance, and acclimatization. Phenomenon was perception of vulnerability. Strategies to manage the vulnerability were assessing changes of body awareness, tailoring regimen to one's own body condition, coping with health problems, keeping restoration of health, and ruminating on the meaning of one's kidney donation. Consequences were reestablishing family well-being, realizing the values of one's kidney donation, and living with uncertainty. Conclusion: Findings of the study indicate that there is a need for health professionals to understand the vulnerability of living kidney donors and help their family system maintain a healthy and productive life. The results of this study can be used to develop phase-specific, patient-centered, and tailored interventions for living kidney donors.

Effects of Plant Growth Regulation on Adventitious Root Formation of Pulsatilla koreana Nakai (할미꽃 기내발근에 미치는 식물생장조절제의 영향)

  • Yoon, Eui-Soo;Kwon, Hye-Kyoung;Cho, Yi-Yun
    • Korean Journal of Medicinal Crop Science
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    • v.14 no.4
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    • pp.225-228
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    • 2006
  • To acquire the normal regeneration of plantlets, we investigated combinations and concentrations of plant growth regulations for optimal conditions of adventitious root formation. Based on the previous study, we performed callus and shoot induction. When induced shoot was transferred into a rooting medium containing plant hormones, it wilted and died. Thus, the shoot proliferated on 1/2 MS medium for 10 days and was then treated with MS medium supplemented with 3.0 mg/L NAA for 3 days. Adventitious root formations were observed after shoot planlets were transferred to 1/3 MS medium. The concentrations of salt and sucrose were gradually reduced in MS medium and the rooted plantlets were transferred for acclimatization into a mixture of peatmoos : perlite (3 : 2).