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Stack,James P.,Engler,Cady R.,Albert,Carcia Ⅲ,Koh,Jeong-Sam 濟州大學校 亞熱帶農業硏究所 1990 亞熱帶農業硏究 Vol.7 No.-
땅콩에서 分離한 곰팡이를 사용하여 免疫抑制活性을 갖는 抗菌性代謝産物의 生産을 위한 振揚培地條件을 檢討하였다. 耐熱性인 이 菌을 Penicillium citrinum var Pa-6으로 同定하였으며, 窒素源을 制限한 培地에서 35℃, 2주간 培養에서 最大의 抗菌作用을 나타냈다. 最適培地組成을 檢査한 結果, 1.5% 칼락토스와 0.5% 포도당을 炭素源으로 하여 C/N비율이 50이 되도록 0.046% NH₄NO₃를 窒素源으로 添加하고, 10mM 無機隣酸과 無機鹽類를 少量 첨가한 培地였다. 또한 페닐알라닌, 글루타민 또는 타이로신과 같은 몇 종류의 아미노산을 添加함으로써 抗菌作用은 배양중에 빨리 나타남을 알 수 있었다. Cultural conditions of shake-flask culture for the production of antimicrobial metabolites containing immunosuppressive activities by fungi isolated from peanut seeds were investigated. The thermotolerant stain, identified as Penicillium citrinum var Pa-6, produced maximum antimicrobial metabolites at 35℃ after 2 weeks on nitrogen-limiting medium. According to cultural conditions, optimum medium compositions for antimicrobial metabolites production were defind as follws; 1.5% of galactose with 0.5% dextrose, 0.046$ NH₄NO₃(C/N ratio 50), 10mM of Pi and trace elements. The expression of antimicrobial actvities were appeared sooner than control during cultivation with the addition of some amino acid such as phenylalanine, glutamine or tyrosine.
지남주,홍연표,Steven John Stack,이원영 대한의학회 2014 Journal of Korean medical science Vol.29 No.8
The aims of this study were to analyze annual trends of charcoal burning (CB) suicide, 2000to 2011, and to examine the risk factors of CB suicide in Korea. Data on suicides(n = 138,938) were obtained from the Statistics Korea. The proportion of CB suicidesamong all suicide deaths reported was 0.7% (84 cases) in 2007, and since 2008 it hasrapidly increased to 7.9% (1,251 cases) in 2011. Of significant risk factors of CB suicide,the presence of the media report of Ahn’s suicide was the greatest risk factor (adjustedodds ratio, 11.69; 95% CI, 10.30-13.23) of the initial phase of the continuing CB suicidessince 2008. Korean Government should urgently consider effective measures against CBsuicide, including enforced media regulations on reporting such suicides.
Helminthosporium sativum 이 생성하는 D-toxin 의 생물학적 활성
이상선,Vcik, Brady A.,Stack, Robert W. 한국균학회 1991 韓國菌學會誌 Vol.19 No.2
Diethyl ether soluble toxin produced by H. sativum had the characteristics of helminthosporal as based on UV, GC-MS, and chemical analysis, but was not a helminthosporal. It was speculated that it was a polymer of helminthosporal. It stimulated the productions of reducing sugar in the barly endosperm like gibberellic acid, but acted in the responses on the barley roots and coleoptiles like gibberellic acid. It seemed to be involved in Foliar and Root rot diseases with host specificity, based on the analysis of linear regression.
Integration of a deep-learning-based fire model into a global land surface model
Rackhun Son,Tobias Stacke,Veronika Gayler,Julia E.M.S. Nabel,Reiner Schnur,Lazaro Alonso,Christian Requena-Mesa,Alexander J. Winkler,Stijn Hantson,Sonke Zaehle,Ulrich Weber,Nuno Carvalhais 한국기상학회 2023 한국기상학회 학술대회 논문집 Vol.2023 No.10
Integration of a deep-learning-based fire model into a global land surface model
Rackhun Son,Tobias Stacke,Veronika Gayler,Julia E.M.S. Nabel,Reiner Schnur,Lazaro Alonso,Christian Requena-Mesa,Alexander J. Winkler,Stijn Hantson,Sonke Zaehle,Ulrich Weber,Nuno Carvalhais 한국기상학회 2023 한국기상학회 학술대회 논문집 Vol.2023 No.11
Youping Sun,Lois Berg Stack,Donglin Zhang,Zhanying Gu 한국원예학회 2011 Horticulture, Environment, and Biotechnology Vol.52 No.4
Ethephon was sprayed on Euphorbia pulcherrima Willd. ex Klotzsch (poinsettia) ‘Sonora Jingle’ and ‘Sonora White’ to control their height and produce more compact potted plants. The results showed that Ethephon could effectively control the growth of ‘Sonora Jingle’ and ‘Sonora White’ poinsettia. Height was reduced by was 33.4 ± 0.8% for ‘Sonora Jingle’ and 30.8 ± 1.3% for ‘Sonora White’ poinsettia, when 700 mg・L^(-1) Ethephon was sprayed three times on 29 August, 20September, and 13 October 2005, respectively. Similar to other plant growth retardants, side effects including phytotoxicity and delays to first bract color were also observed on Ethephon treated poinsettia. However, all plants produced were still of a marketable quality.
Erin K. Crowley,Stefanie Grabrucker,Caitriona M. Long-Smith,Alice Stack,Denise M. O’Gorman,Yvonne M. Nolan 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.9
Middle age is increasingly accepted as a key period during which individuals are susceptible to the effect of environmental and lifestyle factors. Emerging research indicates that dietary factors play a crucial role in brain health and cognitive function, and studies in both animals and humans have demonstrated that dietary interventions can mitigate cognitive impairment. Specifically, magnesium has been shown to enhance learning and memory, and magnesium deficiency is associated with impaired hippocampal-dependent memory formation in animal studies. The aim of this study was to examine if supplementation with a magnesium-rich marine mineral blend (MMB) could alter middle-age-related cognitive impairment. Young and middle-aged rats were given access to a control diet or an experimental diet formulated with an MMB for 4 weeks before undergoing a series of behavioral assessments. Supplementation of MMB to middle-aged rats rescued a deficit in cognitive impairment, specifically a pattern separation paradigm that is sensitive to alterations in a type of brain plasticity called neurogenesis. It had no effect on general activity in the open field or performance on other hippocampal-associated tasks. Changes in cognitive function occur as a predictable consequence of aging. Research into whether modification of dietary factors, such as this MMB, may play a role in the prevention of age-related cognitive impairment warrants further investigation.
Lee, Y H,Simmons, M M,Hawkins, S A C,Spencer, Y I,Webb, P,Stack, M J,Wells, G A H American College of Veterinary Pathologists 2009 Veterinary pathology Vol.46 No.1
<P>To investigate the relative involvement of the olfactory region in classical bovine spongiform encephalopathy (BSE), immunohistochemical labeling of prion protein scrapie (PrP(Sc)) was scored in the brainstem, frontal cerebral cortex, and olfactory bulb of cattle with natural and experimental clinical cases of BSE in Great Britain. The intensity of immunolabeling was greatest in the brainstem, but PrP(Sc) was also detected in the olfactory bulb and the cerebral cortex. A diffuse, nonparticulate labeling, possibly due to abundance of cellular PrP, was consistently observed in the olfactory glomeruli of the cases and negative controls. Involvement of the olfactory bulb in BSE and other naturally occurring TSEs of animals raises speculation as to an olfactory portal of infection or a route of excretion of the prion agent.</P>