• Title/Summary/Keyword: Physiological characteristics

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Physiological and Biological Characteristics of Cuttings of Mulberry Trees in Korea(Abstract)

  • Chung, Tae-Am
    • Journal of Sericultural and Entomological Science
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    • v.19 no.1
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    • pp.37-38
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    • 1977
  • Since 1972 a series of experiments were conducted to reveal physiological function and biological activities involved in rooting of mulberry cuttings, and the behaviour of ether extractable growth control substances in leaves and stens. Measurements were made on various mulberry varieties for respiration of cuttings, suitable size for the production of cuttings, change of rootability of cuttings with growth of cutting shoots after cutting date, rooting tests on the green beans with ether leaf extract and ether stem extract, and rooting effect of cutting by NAA treatment. (omitted)

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Biophysical Characteristics of $Mg^{2+}$ Blockades in Ion Channels and Their Physiological Roles

  • Park, Chul-Seung
    • Proceedings of the Korean Biophysical Society Conference
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    • 1999.06a
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    • pp.26-27
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    • 1999
  • Ionic currents through many different cation channels are specifically reduced by internal and/or external $Mg^{2+}$ within a concentration range of physiological relevance. Although there are many ways for a divalent cation to reduce channel currents, the current blockade by directly binding to a conduction pore has been most well studied.(omitted)

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Physiological Characteristics of Poplar Clones in the Saemanguem Reclaimed Land (새만금간척지에 식재한 포플러 클론의 생리적 특성)

  • Lee, Jong Kyu;Jang, Ji Hwi;Li, Yang;Kim, Hae Naem;Kwak, Myeong Ja;Khaine, Inkyin;Lee, Tae Yoon;Lee, Hyun Kyung;Kim, Ie Rae;Jang, Gyeong Hwan;Lee, Wi Young;Kang, Ho Duck;Woo, Su Young
    • Journal of Korean Society of Forest Science
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    • v.106 no.2
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    • pp.186-195
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    • 2017
  • This research aims to study the physiological characteristics of poplar clones in Saemanguem reclaimed land where has lower minerals and bad drainage than those in paddy field. In July and August, different poplar clones including Populus euramericana clone (Venziano and L.Avanzo) and deltoides hybrid clone (97-18 and 97-19) showed different physiological characteristics. Physiological characteristics of P. euramericana clones were better than those of P. deltoides hybrid clones. Especially, the average net photosynthetic rate ($A_{net}$) of clone Venziano were $18.62{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$ and $17.11{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$, respectively. Those were the highest numerical values among other poplar clones. On the other, the total chlorophyll and carotenoid contents of P. deltoides hybrid clones were higher than those of P. euramericana clones in July. Particularly, the total chlorophyll content of clone 97-18 was $2.37mg{\cdot}g^{-1}FW$. In August, those of P. deltoides hybrid clones decreased than in July. In term of the physiological activity such as net photosynthetic rate and stomatal conductance of P. deltoides hybrid clones were much lower in August than in July. As a result, physiological characteristics of P. euramericana Venziano clone was superior than the other clones in Short rotation coppice (SRC) in Saemanguem area.

Definition, Role and Method of Yinyang Pattern Differentiation (음양변증(陰陽辨證)의 정의와 기능 및 판별방법 연구)

  • Chi, Gyoo-yong;Park, Shin-hyung
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.35 no.2
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    • pp.47-55
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    • 2021
  • In order to ensure the fact that eight principle pattern differentiation is used clinically as a basic guideline for Korean medicine practice, the definition, role and method of yin-yang pattern differentiation with its case report were explored at first. Yinyang Pattern Differentiation is a method of discriminating human tendencies or morbidity based on the yin and yang characteristics expressed in living bodies. And yin and yang are the two contrasting characteristics and aspects of the interaction when certain physical conditions that have a lasting effect on the human physiological metabolic function are correlated with the morbidity. Specific methods of yinyang pattern differentiation can be divided into several types of yin and yang indicators. First, time and space factors like day and night, hot and cold seasons, above and below, topographical districts. Second, colors and pulse and their/or relative clearness and muddiness, hardness and softness, moving and resting. Third, diagnose yin and yang patterns through distinguishing the true and false of a fever and cold in an emergency phase such as increase of brain pressure and shock state. Fourth, general characteristics of the propensity and constitution of a subject such as body type, speech, behavior, and physiological metabolism. And for clinical use, these were summarized again as a symptom indicators of physical signs and color, pulse, tongue and questionnaire indicators of propensity, body type, and space-time characteristics. Conclusively, it was confirmed that yinyang pattern differentiation has its own diagnostic significance which is distinct from exterior-interior, cold-heat and deficiency-excess pattern differentiation.

Artificial Intelligence Based Approaches to the Effect of Cognitive Style and Physiological Phenomena on Judgmental Time series forecasting: A Proposal

  • Park, Hung-Kook;Yoo, Hyeon-Joong;Byoungho Song
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2000.04a
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    • pp.318-327
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    • 2000
  • Managerial intuition is a well-recognized cognitive ability but still poorly understood for the purpose of developing effective decision support systems. this research investigates whether the differences in accuracy of "time series forecasting" are related to the differences in one's cognitive style, using statistical test The hypotheses established in the research model did not have positive correlation The lack of correlation between "cognitive style and physiological measures" and accuracy in forecasting may be caused by uncontrolled external variable. Thus, further analyses on physiological characteristics and brainwaves are needed. The approaches such as neural network and data mining are proposed.

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Design of Hybrid Unsupervised-Supervised Classifier for Automatic Emotion Recognition (자동 감성 인식을 위한 비교사-교사 분류기의 복합 설계)

  • Lee, JeeEun;Yoo, Sun K.
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.9
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    • pp.1294-1299
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    • 2014
  • The emotion is deeply affected by human behavior and cognitive process, so it is important to do research about the emotion. However, the emotion is ambiguous to clarify because of different ways of life pattern depending on each individual characteristics. To solve this problem, we use not only physiological signal for objective analysis but also hybrid unsupervised-supervised learning classifier for automatic emotion detection. The hybrid emotion classifier is composed of K-means, genetic algorithm and support vector machine. We acquire four different kinds of physiological signal including electroencephalography(EEG), electrocardiography(ECG), galvanic skin response(GSR) and skin temperature(SKT) as well as we use 15 features extracted to be used for hybrid emotion classifier. As a result, hybrid emotion classifier(80.6%) shows better performance than SVM(31.3%).

Growth Characteristics and Physiological Functionality of Yeasts in Pear Marc Extracts

  • Jang, In-Taek;Kang, Min-Gu;Na, Kwang-Chul;Lee, Jong-Soo
    • Mycobiology
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    • v.39 no.3
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    • pp.170-173
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    • 2011
  • Kluyveromyces fragilis KCTC 7260 and Saccharomyces cerevisiae KCTC 7904, which both grew well in pear marc extract, were selected and their growth profiles and physiological functionalities were determined. Both of the selected yeasts established maximal growth by 20 hr of cultivation at $30^{\circ}C$ in pear marc extract. The cell-free extracts showed high antihypertensive angiotensin I-converting enzyme inhibitory activity of 68.9% and 52.1%, respectively. The extracts also displayed 9.2 U/mL and 12.0 U/mL of protease activity, respectively.

Consideration of Physiological Functional Characteristics in Garlic, Allium sativum L. (마늘 (Allium sativum L.)의 생리조절 기능특성과 평가에 관한 연구고찰)

  • 장현세;홍경훈
    • Food Science and Preservation
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    • v.5 no.2
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    • pp.191-197
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    • 1998
  • Garlic is an important condimental vegetable which has many minerals and numerous organic sulfur compounds. Owing to these components, garlic has many medicinal properties and physiological activities on human health. It can lower sect lipid levels and reduce the severity of cholesterol-induced atherosclerosis. And it appeals to protect against mutagenic and carcinogenic effects. Today's our eating habit is concentrated on the physiological function in floods rather than their taste or mutagenic. To improve garlic's value as a flood or a vegetable, further scientific researches about its volatile and nonvolatile sulfur compounds through the biochemical approach are needed. In addition to that, both areas that the development of garlic-processed goods and utilization of garlic as materials for medicine must be actively studied.

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Coping methods related with post-traumatic stress types for the firefighters who experienced the Dae-gu subway fire disaster (대구지하철 참사를 경험한 소방관의 외상 후 스트레스유형에 따른 대처방식)

  • Baek, Mi-Lye
    • The Korean Journal of Emergency Medical Services
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    • v.11 no.3
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    • pp.5-15
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    • 2007
  • The purpose of this study was to identity the distribution of post-traumatic stress types and coping methods and to find the relationship between the post-traumatic stress types and the coping methods, for firefighters who experienced in Dea-Gu Subway Fire Disaster. The Subjects of this study were 126 firefighters who experienced Deagu Subway Disaster. Q questionnaire developed by Q-study and coping methods instrument based on that of Folkman & Lazaruswas revised and complemented by Kim Jung Hee was used. Data were analyzed by t-test, ANOVA using SPSS. The results of this study were as follows : 1. The distribution of post-traumatic stress types were 52.4% of Emotional arousal trauma, 34.1% of Trauma experience persistence and 13.5% of Physiological symptom experience. 2. The difference of post-traumatic stress types according to the general characteristics were significantly related to the physical injury(p = .010). 3. The minimum score of coping with post-traumatic stress types was 0.07, the maximum was 2.96 and the mean score was 1.27. 4. The coping methods according to the general characteristics were significantly different at active coping method according to educational level(p = .001), passive coping method according to educational level(p = .003) and passive coping method according to diagnosis(p = 0.20). 5. The mean score of active coping method according types were Emotional arousal trauma(1.505), trauma experience persistance(1.322) and Physiological symptom experience(1.276). The mean score of passive coping method related with types were Emotional arousal trauma(1.328), trauma experience persistance(1.254) and Physiological symptom experience(1.219).

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Comparison of Absorption Ability by Difference of Physiological Response in Three Foliage Plants Exposed to $O_3 and SO_2$ SIngly and in Combination (관엽식물의 생리적 반응 차이에 의한 대기오염물질 $(O_3, SO_2, O_3+SO_2)$의 흡수능 비교)

  • 박소홍;이영이;배공영;이용범
    • Journal of Korean Society for Atmospheric Environment
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    • v.14 no.1
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    • pp.35-42
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    • 1998
  • We compared absorption and adsorption rates of air pollutants by plants to eveluate the difference of absorption capacity of plant species and kinds of air pollutants, when foilage plants were exposed to $O_3$ and $SO_2$ singly and combiningly. Absorption and adsorption rates of three foliage plants exposed to $O_3$ and $SO_2$ singly and in combination varied a little according to plant species and kinds of air pollutants. But total absorption rate of Spathiphyllum patinii and Ficus benjamina was higher, and it was lower in Pachira aquatica. When exposed to $O_3$ and $SO_2$ at the same concentration, Pachira aquatica absorbed more $O_3$ than $SO_2$, in contrast to Ficus benjamina absorbing more $SO_2$. On the other hand, Spathiphyllum patinii absorbed as much $O_3$ as $SO_2$. Physiological activities were measured since absorption rates were affected by physiological characteristics of plants. Spathiphyllum patinii and Ficus benjamina showed higher photosynthetic and transpiration rates, and Pachira aquatica showed lower values. And diffusive and stomatal resistences of Pachira aquatica were higher than those of two other species. These results showed that absorption capacity was affected by the differences of physiological characteristics. Absorption capacity of air pollutants increased in plants, such as Spathiphyllum patinii and Ficus benjamina, which had high $SO_2$ absorption rate. We found that plants showing high $CO_2$ absorption rates absorb a lot of air pollutnats.

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