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      • KCI등재

        The effect of water status on productive and fl owering variables in young ‘Arbequina’ olive trees under limited irrigation water availability in a semiarid region of Chile

        Víctor Beyá-Marshall,Julio Herrera,Thomas Fichet,Eduardo R. Trentacoste,Cristián Kremer 한국원예학회 2018 Horticulture, Environment, and Biotechnology Vol.59 No.6

        The intense drought aff ecting olive production in Northern Chile underscores the need to research non-traditional irrigationstrategies to obtain the best crop performance. Accordingly, this study aimed to obtain preliminary data to guide futureresearch on this topic. Diff erent water replenishment levels on crop evapotranspiration (ET c ; 13.5, 27.0, 40.5, and 54%)were established in a young orchard, cv. Arbequina, from the end of fruit drop (EFD) to full bloom in the next season. Weevaluated the infl uence of plant water status (Ψ stem ) and crop load, considered as function of fruit number divided by trunkcross-sectional area, on reproductive and productive variables using multiple linear regressions. Our results show that cropload and Ψ stem measured from EFD to harvest affected yield components. Nevertheless, Ψ stem had the strongest infl uenceon fruit size, pulp development, oil accumulation, and yield. Oil content and yield were reduced by 54% and 50% for eachMPa, respectively, from Ψ stem EFD-H − 1.8 MPa, an effect that intensifi ed as crop load increased. During the period of fl owerdevelopment (September–November), the number of flowers per infl orescence and percentage of perfect flowers were reducedwhen Ψ stem was less than − 2.0 MPa. These preliminary results showed that bud differentiation, infl orescence and flowerformation are highly sensitive to water deficit. The intense drought aff ecting olive production in Northern Chile underscores the need to research non-traditional irrigationstrategies to obtain the best crop performance. Accordingly, this study aimed to obtain preliminary data to guide futureresearch on this topic. Diff erent water replenishment levels on crop evapotranspiration (ET c ; 13.5, 27.0, 40.5, and 54%)were established in a young orchard, cv. Arbequina, from the end of fruit drop (EFD) to full bloom in the next season. Weevaluated the infl uence of plant water status (Ψ stem ) and crop load, considered as function of fruit number divided by trunkcross-sectional area, on reproductive and productive variables using multiple linear regressions. Our results show that cropload and Ψ stem measured from EFD to harvest affected yield components. Nevertheless, Ψ stem had the strongest infl uenceon fruit size, pulp development, oil accumulation, and yield. Oil content and yield were reduced by 54% and 50% for eachMPa, respectively, from Ψ stem EFD-H − 1.8 MPa, an effect that intensifi ed as crop load increased. During the period of fl owerdevelopment (September–November), the number of flowers per infl orescence and percentage of perfect fl owers were reducedwhen Ψ stem was less than − 2.0 MPa. These preliminary results showed that bud differentiation, infl orescence and flower formation are highly sensitive to water deficit.

      • BEYTrans: A Free Online Collaborative Wiki-Based CAT Environment Designed for Online Translation Communities

        ( Youcef Bey ),( Kyo Kageura ),( Christian Boitet ) 한국언어정보학회 2007 학술대회 논문집 Vol.2007 No.-

        This paper introduces BEYTrans (Better Environment for Your TRANSlation), the first experimental environment for free online collaborative computer-aided translation. The requirements and functionalities related to individual translators and communities of translators are distinguished and described. These functionalities have been integrated in a Wiki-based complete environment, equipped with all currently possible asynchronous linguistic resources and translation aids. Functions provided by BEYTrans are also compared with existing CAT systems and ongoing experiments are discussed.

      • KCI등재

        Optimization of Phenolic Compound Recovery and Antioxidant Activity of Light and Dark Dried Fig (Ficus carica L.) Varieties

        Mostapha Bachir Bey,Hayette Louaileche,Salima Zemouri 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.6

        The optimum conditions for extraction of totalphenolic contents (TPC) and for enhancing the antioxidantactivity from light and dark dried figs were determined. The effects of the solvent nature (acetone, ethanol, methanol,or water), solvent concentration (20-80%), acetic acidconcentration (0-2%), extraction temperature (25-70oC),extraction time (0.5-4 h), sample to solvent ratio (1/25-1/100), and number of extractions (1, 2, and 3) weredetermined. The TPC was used to identify antioxidantcompounds. 2,2-diphenyl-1-picrylhydrazyl (DPPH) wasused to evaluate antioxidant activity. All extraction parametershad significant effects (p<0.05) on the TPC and theantioxidant activities. The best conditions were obtainedwith double extraction using 60% acetone withoutacidification, at 40oC for 120 min, and with a 1/75 solid tosolvent ratio. These conditions resulted in TPC concentrationsof 469.46 (light variety) and 399.79 mg of gallic acid(GAE)/100 g (dark variety), and antioxidant activities of96.47 and 102.28 mg of GAE/100 g, respectively.

      • SCIESCOPUSKCI등재

        Determination of levels of nitric oxide in smoker and nonsmoker patients with chronic periodontitis

        Wadhwa, Deepti,Bey, Afshan,Hasija, Mukesh,Moin, Shagufta,Kumar, Arun,Aman, Shazia,Sharma, Vivek Kumar Korean Academy of Periodontology 2013 Journal of Periodontal & Implant Science Vol.43 No.5

        Purpose: Cigarette smoking is a major risk factor in periodontal diseases. The pathogenesis of periodontal diseases may be affected by alterations of the inflammatory response by smoke. Nitric oxide (NO) is a gaseous, colorless, highly reactive, short-lived free radical with a pivotal role in the regulation of various physiological and pathological mechanisms in the body. It is important in host defense and homeostasis, on the one hand, whereas, on the other hand, it modulates the inflammatory response in periodontitis, leading to harmful effects. The aim of this study was to assess the levels of NO in both the serum and saliva of smokers and nonsmokers having chronic periodontitis and to compare them with periodontally healthy controls. Methods: Sixty subjects participated in the study and were divided into three groups: group I, healthy nonsmoking subjects; group II, nonsmoking patients with chronic periodontitis; group III, smoking patients with chronic periodontitis. Each group consisted of twenty subjects. The biochemical estimation of NO in the collected serum and in the saliva was performed using the Griess colorimetric reaction. Results: The results showed that the mean value of the salivary and serum NO was greater in group II than in group I, and also greater in group III than in group II. Conclusions: NO appears to play an important and rather complex role in the immuno-inflammatory process and in the remodeling and maintenance of osseous structures. It is therefore logical that modulation of this mediator has potential for the treatment of a number of inflammatory conditions including periodontal disease.

      • SCIESCOPUSKCI등재

        Synaptic Plasticity in Mouse Models of Autism Spectrum Disorders

        Chung, Leeyup,Bey, Alexandra L.,Jiang, Yong-Hui The Korean Society of Pharmacology 2012 The Korean Journal of Physiology & Pharmacology Vol.16 No.6

        Analysis of synaptic plasticity together with behavioral and molecular studies have become a popular approach to model autism spectrum disorders in order to gain insight into the pathosphysiological mechanisms and to find therapeutic targets. Abnormalities of specific types of synaptic plasticity have been revealed in numerous genetically modified mice that have molecular construct validity to human autism spectrum disorders. Constrained by the feasibility of technique, the common regions analyzed in most studies are hippocampus and visual cortex. The relevance of the synaptic defects in these regions to the behavioral abnormalities of autistic like behaviors is still a subject of debate. Because the exact regions or circuits responsible for the core features of autistic behaviors in humans are still poorly understood, investigation using region-specific conditional mutant mice may help to provide the insight into the neuroanatomical basis of autism in the future.

      • 접어율에 의한 영어의 재구조와 음악과의 관계 설정

        김기섭,Kim Bey-Seop 대한음성학회 1998 말소리 Vol.35 No.-

        This research, based on the support for the existence of 'Clitic Group', proves the 'Clitic Cadence' as the solid evidence to the point that music underlies poetic rhythm in the words or poetic lines which, in turn, underly speech rhythm. Through the relation of stress-beat and clitic cadence to musical schema, such as measure, motive and period, the study clarifes the figurations of cliticization, sometimes procliticized and sometimes encliticized, even if the former appears more often than the latter. Above all, this research puts emphasis on the separate position of clitics not criticized but positioned in strong positions in music, Finally, it suggests some use of clitics to teachers and learners of English for stress-beating for rhythmization of English.

      • KCI등재

        Determination of levels of nitric oxide in smoker and nonsmoker patients with chronic periodontitis

        Deepti Wadhwa,Afshan Bey,Mukesh Hasija,Shagufta Moin,Arun Kumar,Shazia Aman,Vivek Kumar Sharma 대한치주과학회 2013 Journal of Periodontal & Implant Science Vol.43 No.5

        Purpose: Cigarette smoking is a major risk factor in periodontal diseases. The pathogenesis of periodontal diseases may be affected by alterations of the inflammatory response by smoke. Nitric oxide (NO) is a gaseous, colorless, highly reactive, shortlived free radical with a pivotal role in the regulation of various physiological and pathological mechanisms in the body. It is important in host defense and homeostasis, on the one hand, whereas, on the other hand, it modulates the inflammatory response in periodontitis, leading to harmful effects. The aim of this study was to assess the levels of NO in both the serum and saliva of smokers and nonsmokers having chronic periodontitis and to compare them with periodontally healthy controls. Methods: Sixty subjects participated in the study and were divided into three groups: group I, healthy nonsmoking subjects;group II, nonsmoking patients with chronic periodontitis; group III, smoking patients with chronic periodontitis. Each group consisted of twenty subjects. The biochemical estimation of NO in the collected serum and in the saliva was performed using the Griess colorimetric reaction. Results: The results showed that the mean value of the salivary and serum NO was greater in group II than in group I, and also greater in group III than in group II. Conclusions: NO appears to play an important and rather complex role in the immuno-inflammatory process and in the remodeling and maintenance of osseous structures. It is therefore logical that modulation of this mediator has potential for the treatment of a number of inflammatory conditions including periodontal disease. Purpose: Cigarette smoking is a major risk factor in periodontal diseases. The pathogenesis of periodontal diseases may be affected by alterations of the inflammatory response by smoke. Nitric oxide (NO) is a gaseous, colorless, highly reactive, shortlived free radical with a pivotal role in the regulation of various physiological and pathological mechanisms in the body. It is important in host defense and homeostasis, on the one hand, whereas, on the other hand, it modulates the inflammatory response in periodontitis, leading to harmful effects. The aim of this study was to assess the levels of NO in both the serum and saliva of smokers and nonsmokers having chronic periodontitis and to compare them with periodontally healthy controls. Methods: Sixty subjects participated in the study and were divided into three groups: group I, healthy nonsmoking subjects;group II, nonsmoking patients with chronic periodontitis; group III, smoking patients with chronic periodontitis. Each group consisted of twenty subjects. The biochemical estimation of NO in the collected serum and in the saliva was performed using the Griess colorimetric reaction. Results: The results showed that the mean value of the salivary and serum NO was greater in group II than in group I, and also greater in group III than in group II. Conclusions: NO appears to play an important and rather complex role in the immuno-inflammatory process and in the remodeling and maintenance of osseous structures. It is therefore logical that modulation of this mediator has potential for the treatment of a number of inflammatory conditions including periodontal disease.

      • Determining Potential Obstacles in Unobservable Areas Based on Current and Past Perception

        Julia Baumgartner,Henrik Bey,Dennis Faßbender,Jorn Thielecke 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10

        Automated vehicles perceive only a small part of their environment. Especially unobservable vehicles pose a significant risk. To achieve safe but also comfortable behavior, potential, unobservable vehicles must be considered in behavior planning. Conventional methods use solely the current observation of the environment to determine potential obstacles. Past observations are rarely considered, although these may contain helpful information to rule out potential obstacle positions. This paper presents a novel algorithm that uses past observations besides the current observation to determine possible obstacle states. By means of a particle filter, we iteratively predict and filter feasible states of a potential obstacle. This results in a probability distribution for the position and velocity of an unobservable obstacle. We furthermore present a concept for the interface between our method and a basic behavior planning algorithm. The real-time capable method is tested on both simulated and real-world data. By comparing the algorithm to a baseline algorithm which uses only the current observation, we show that our algorithm prevents overly cautious assumptions about a potential obstacle’s state in certain situations. As a result, a more comfortable driving behavior can be achieved.

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