Impacts and Countermeasures of Climate Change on Food Supply

Kim Chang-gil,Jeong Hak-kyun,Han Suk-ho,Kim Jeong-seung,Moon Dong-hyun 한국농촌경제연구원 2013 한국농촌경제연구원 기본연구보고서 Vol.- No.-

Climate change has become a megatrend that will lead to significant changes in future society. Korean and overseas agencies specializing in climate forecasts predict that average global temperatures will continue to rise. While climate change may potentially have certain positive impacts for crop yields, the overall impact is predicted to be negative for environment and food security. In this context, our study aims to suggest a plan for systematically establishing a stable food supply system in Korea in respose to climate change. Various analytical models were employed, including: a response analysis based on questionnaire for farmers, panel-based analysis of the causes of pests and diseases in rice production, a random-effects model for panel data of extreme weather impact, and an analysis of food supply effects using the Simulation Model for Climate-Agriculture Relations (SIMCAR) integrated model in conjunction with the Crop Estimation through Resource and Environment Synthesis (CERES) model of the Korea Agricultural Simulation Model (KASMO). An analysis was made of major grain yields by means of the KREI-KASMO. This revealed reduced yields and area in comparison with the baseline in 2050, resulting in a reduction of rice production by 17.8%p in the RCP8.5 scenario, and reduction of soybean by 21.2%p and reduction of barley by 13.7%p in the A2 scenario. Self-sufficiency ratio of major grains in 2050 drawn from the SIMCAR revealed that the climate change scenario for rice showed 55.0% to be reduced by 18.3% in comparison with the baseline. It is predicted that selfsufficiency ratio in rice will drop to 50% which means a half of consumed rice should be imported. Key tasks for building a stable food supply system to cope with climate change were developed based on the domestic production capacity, the buffering capacity to climate change, import capacity from other countries, and policy performance capacity with reference to the empirical analysis. First, the suggested key tasks for improving the domestic production capacity include developing and disseminating adaptation technology, conserving farmland and expanding arable land, practicing climate-smart agriculture by using fusion technology, and modernizing infrastructure for agriculture. Second, key tasks for improving buffering capacity to climate change are improving resilience and biodiversity, building a risk management system, and further improving storage of food in Korea and other countries. Third, major tasks for improving the import capacity from other countries are constructing overseas food bases, effectively using the international grain market, and enhancing international cooperation with relevant countries. Finally, key tasks for improving policy performance capacity are refining and applying the climate change impact analysis model with respect to policies, expanding investments in research and development, building a vulnerability assessment system, enhancing education and training, and installing Climate Change Response Center for Agriculture (tentative). In this study, several key challenges were presented in the four different areas related to building a stable food supply system which can help overcome the challenges of climate change. It is expected that the nature of the policies that need to be prioritized and promoted, given the constraints of budget, organization and information will be addressed in future research. Also, in order for the solutions for key challenges to work properly in the field such that policy outcomes will be maximized, a consortium of research bodies in the related fields of agriculture, agricultural meteorology and agricultural economics should be created. As preparation for specific action programs. Furthermore, follow-up studies should be conducted to verify the expenses required for developing reliable climate change impact assessment models and the effectiveness of the enforced policies. Such fie

사상 : 농암 김창협의 학문 수용과 지각론

김영훈 ( Young Hoon Kim ),전선숙 ( Sun Suk Jeon ),신창호 ( Chang Ho Shin ) 영산대학교 동양문화연구원 2012 동양문화연구 Vol.11 No.-

본 연구는 조선시대 유학자인 농암(農巖) 김창협(金昌協, 1651-1708)의 학문 수용 과정을 지각론을 중심으로 살펴본 것이다. 김창협은 율곡학파 계열의 학자이지만 퇴계 이황의 학설에 호감을 갖고 이를 긍정하여 자신의 학파와 절충하는 독특한 사상을 전개하였다. 율곡 이이의 사단칠정론에 대해 반대한 것은 아니지만 비판적 입장을 취하면서, 리발(理發)을 중심으로 하는 퇴계 이황의 이론을 수용하였다. 그것은 호락논쟁으로 이어지면서 김창협의 학문적 성숙을 유도하였고, 마침내 지각설이라는 이론 체계로 드러났다. 그의 지각론은 첫째, 성(性)은 성즉리(性卽理)의 입장에서 파악해야 하고 지(智) 또는 리(理)를 중심으로 해석해야 한다는 것, 둘째, 지(智)는 분별의 리(理)로 해석하는 것이 옳고, ‘밝게 비춘다’라는 구절의 해석에서 기미와 색상은 자연스럽게 드러난다는 점, 셋째, 지(智)는 사물의 시비득실(是非得失)의 차별을 구별하고 판단하는 기준이 된다는 점 등이 강조되었다. 다시 말하면, 인간은 사물을 접하게 마련이고, 심(心)의 지각은 이를 감각 기관을 통하여 받으며, 지각을 통해 받아들인 것은 인의예지신(仁義禮智信)의 성(性)에 의해 정해지고, 인간은 자신의 행동을 결정하며, 지는 인간의 내부에서 구체적인 정(情)의 작용인 측은지심, 수오지심, 사양지심, 시비지심의 모습으로 나타난다는 것이다. 이러한 인식은 인간을 주체이고 능동적 역할을 하는 존재로 부각시키는 사상적 근거가 된다. This research aimed to review the process regarding acceptance of studies about Nongam Kim Chang-Hyeop who was a confucian of Joseon Dynasty with the theory of intelligence and perception as the central figure. Being the scholar of Yulgok school, Kim Chang-Hyeop was interested in Toegye Lee Hwang`s theory, agreed with it, made a compromise with his school, and developed his unique thought. Although he did not object to Yulgok Lee Yi`s Sa Dan Chil Jeong Non(四端七情論, it is a theory regarding Sa Dan which are perfect virtue, righteousness, courtesy, and perception according to the theory of Mencius. and Chil Jeong which are pleasure, anger, sadness, joy, love, hate, and avariciousness), he took a critical attitude regarding it and accepted Lee Hwang`s theory with Li Bal(理發, appearing principle law) as the central figure. It was followed by Ho Rak Non Jaeng(湖洛論爭, it is an argument regarding whether human nature and thing`s nature are same or not), led the maturity of Kim Chang-Hyeop`s study, and finally appeared with the theoretical system of intelligence and perception. His theory of intelligence and perception emphasized that first, nature is perceived by "nature is principle law" and interpreted by intelligence or principle law. Second, it is right that intelligence is interpreted by principle law of discernment and smell, taste, and color naturally appear with interpretation of "shine brightly on." Third, intelligence is the criterion of discernment and judgement regarding differentiation of Si Bi Deuk Sil(是非得失, right, wrong, obtaining, and losing) about things. In other words, a person always faces any things, intelligence and perception of mind is arranged through sense organ, things accepted through intelligence and perception are determined by the nature of In Ui Ye Ji Sin(仁義禮智信, perfect virtue, righteousness, courtesy, intelligence, and trust), people determine their action, intelligence appears with the working of feeling which are Cheuk Eun Ji Sim, So O Ji Sim, Sa Yang Ji Sim, and Si Bi Si Sim. This perception becomes a foundation of thought which emphasizes human beings as a active role and a subject.

Lifestyle-dependent brain change: a longitudinal cohort MRI study

Kim, Regina EY.,Yun, Chang-Ho,Thomas, Robert J.,Oh, Jang-Hoon,Johnson, Hans J.,Kim, Soriul,Lee, Seungku,Seo, Hyung Suk,Shin, Chol Elsevier 2018 Neurobiology of aging Vol.69 No.-

<P><B>Abstract</B></P> <P>We investigated both independent and interconnected effects of 3 lifestyle factors on brain volume, measuring yearly changes using large-scale longitudinal magnetic resonance imaging, in middle-aged to older adults. We measured brain volumes in a cohort (<I>n</I> = 984, 49–79 years) from the Korean Genome and Epidemiology Study group, using baseline and follow-up estimates after 4 years. In our analysis, the accelerated brain atrophy in normal aging was observed across regions (e.g., brain tissue: -0.098 ± 0.01 mL/y, <I>p</I> < 0.001). An independent lifestyle-specific trend of brain atrophy across time was also evident in men, where smoking (<I>p</I> = 0.012) and physical activity (<I>p</I> = 0.014) showed the strongest association with the atrophy rate. Linear regression analysis of the interconnected effect revealed that brain atrophy is mitigated by intense physical activity in smoking males. Lifestyle factors did not show any significant effect on brain volume in women. These results provide important information regarding lifestyle factors that affect brain aging in mid-to-late adulthood. Our findings may aid in the identification of preventive measures against dementia.</P>

In vitro Screening of Jeju Medicinal Plants for Cosmeceutical Materials

Kim, Sang-Suk,Hyun, Chang-Gu,Lee, Jong-Sung,Lim, Ji-Hee,Kim, Ji-Young,Park, Deok-Hoon The Korean Society for Applied Biological Chemistr 2007 Journal of Applied Biological Chemistry (J. Appl. Vol.50 No.4

One of the important functions of skin is protection from harmful environments. Many studies have explored how to prevent skin from wrinkling and the occurrence of pigmentation changes. Skin wrinkling and pigmentation changes could be caused by unusual disruption of connective tissue, the formation of free radicals and ultraviolet radiation. In this study, extracts obtained from 254 different kinds of Jeju medicinal plants were screened for inhibitory effects on tyrosinase and elastase, and for free radical scavenging effects. Four herbs, Phormium tenax, Morus bombycis, Morus alba, and Cudrania tricuspidata, were potent inhibitors of tyrosinase ($IC_{50}$ values 4.62, 5.46, 8.17, and 64.17 ${\mu}g$/mL, respectively). Aleurites fordii [$IC_{50}$: 5.29 ${\mu}g$/mL, 1,1-diphenyl-2-picrylhydrazyl (DPPH)], Distylium racemosum ($IC_{50}$: 6.14 ${\mu}g$/mL), Acer palmatum ($IC_{50}$: 5.44 ${\mu}g$/mL), and Spiraea salicifolia ($IC_{50}$: 5.25 ${\mu}g$/mL) showed good antioxidative effects. Furthermore, Distylium racemosum ($IC_{50}$: 7.51 ${\mu}g$/mL), Diospyros kaki ($IC_{50}$: 15.1 ${\mu}g$/mL), Cornus macrophylla ($IC_{50}:$ 16.59 ${\mu}g$/mL), and Psidium guajava ($IC_{50}$: 40.25 ${\mu}g$/mL) exhibited potent inhibitory effects on elastase. These results suggest that medicinal plants possessing several biological activities may be potent inhibitors of the processes involved in pigmentation increases and aging. Further investigations will focus on in vivo assays and on the chemical identification of the major active components responsible for whitening and anti-aging activity in the screened efficacious extracts.

Combined Effect of Bilateral Ovariectomy and Anterior Cruciate Ligament Transection With Medial Meniscectomy on the Development of Osteoarthritis Model

Kim, Jae Lim,Moon, Chang Won,Son, Young Suk,Kim, Sang Jun Korean Academy of Rehabilitation Medicine 2016 Annals of Rehabilitation Medicine Vol.40 No.4

<P><B>Objective</B></P><P>To investigate the combined effect of bilateral ovariectomy (OVX) and anterior cruciate ligament transection (ACLT) with medial meniscectomy (MM) on the development of osteoarthritis (OA).</P><P><B>Methods</B></P><P>Twenty female 15-week-old Sprague-Dawley rats were used. Five rats in each group underwent bilateral OVX (OVX group), bilateral ACLT with MM (ACLT with MM group), bilateral OVX plus ACLT with MM (OVX plus ACLT with MM group), and sham surgery (SHAM group). All the rats were subjected to treadmill running for 4 weeks. The behavioral evaluation for induction of OA used the number of rears method, and this was conducted at 1, 2, and 4 weeks post-surgery. Bone mineral density (BMD) was calculated with micro-computerized tomography images and the modified Mankin's scoring was used for the histological changes.</P><P><B>Results</B></P><P>The number of rears in the OVX plus ACLT with MM group decreased gradually and more rapidly in the ACLT with MM group. Histologically, the OVX plus ACLT with MM group had a significantly higher modified Mankin's score than the OVX group (p=0.008) and the SHAM group (p=0.008). BMDs of the OVX plus ACLT with MM group were significantly lower than the SHAM group (p=0.002), and the ACLT with MM group (p=0.003).</P><P><B>Conclusion</B></P><P>We found that bilateral OVX plus ACLT with MM induced definite OA change in terms of histology and BMD compared to bilateral OVX and ACLT with MM alone. Therefore, OVX and ACLT with MM was an appropriate degenerative OA rat model.</P>

울형성 심부전증에서 심혈관계 보상기전의 지표로서 저나트륨혈증의 의의에 관한 연구

김경환,김미경,이우형,홍사석,신길자,장일중 대한내과학회 1986 대한내과학회지 Vol.31 No.3

In patient with congestive heart failure, it is well known that the sympatho-adrenal system and the renin angiotensin system are activated to compensate for the reduction of cardiac output and the redistribution of blood flow. Although Lilly, et al. (1984) and Francis, et al. (1985) have insisted that the induction of these circulatory compensation mechanism by pastura1 changes is closely related to the concentration of plama sodium in congestive heart failure, it is still controversial. Thus, in an effort to clarify this hypothesis, present study was designed to determine the relationship between the existing sodium concentration in plasma and the changes of the plasma catecholamine concentration and renin activity during postural alterations in patients with congestive heart fai1ure and normal subjects. Ten patients with congestive heart failure who had been admitted to the Ewha Womans University Hospital from May, 1985 to July, 1985 and five normal volunteers were chosen. Patients with more than one year history of congestive heart failure belonging to class 3 or 4 as the criteria set by the New York Heart Association have been selected for this study. Among these ten patients, 5(3 males and 2 females) had low plasma sodium concentration(below 135mEq/l) and 5(3 males and 2 females) had normal plasma sodium concentration(above 135mEq/l). The observed results are as follows: 1) In the normal subjects, the observed plasma renin activity was 1,2±0.4ng/ml/hr and the concentrations of norepinephrine and epinephrine were 177.5±27 and 150.0±8pg/ml, respectively, at supine position. However, these values were increased by about 2 times by changing to upright position. 2) In patients with hyponatremic congestive heart failure, the values of plasma renin activity and catecholamine levels were significantly higher than those patients having normonatremia. 3) The increase in the plasma renin activity and catecholamin levels induced by upright position were minimal in patients with congestive heart failure having normonatremia. 4) However, in patients with hyponatremic congestive heart failure, the plasma renin activity and the levels of plasma catecholamines were not altered, or rather decreased, by the same postural changes. Based on the results, the levels of plasma sodium concentration in patients with congestive heart failure could provide an index for the induction of circulatory compensation mechaniams and may have important significance in determining the severity and prognosis of the disease. Particularly in the congestive heart failure patients with hyponatremia, as the circulatory compensation mechanism appear to be operating at maximum already, they would not be able to utilize the reflex compensation mechanism inducible with the changes of body position.

ZnO/TiO₂ 박막 제작과 유전율 특성

김창석,최창주,이우선,오무송,김태성,김병인 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.2

In this study, ZnO is evaporated to be coated on n-type Si wafer substrate. Refractive coefficient of thin film that is evaporating TiO₂onto ZnO increases linearly as thickness is getting thinner to have high value and high angle and it satisfies theoretical equation I(x)=Io exp (-αx) theory that represents the strength of photon energy advancing through ZnO thin film. And dielectric constant of TiO₂thin film evaporated onto ZnO is high and ε₂ is smaller than ε₁. The specimen TiO₂thin film evaporated onto ZnO has much higher dielectric constant when photon energy is increased.

공동주택조명 설비 기준 설정을 위한 조사 연구

김동관,송진원,이경섭,김병인,김창석 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.2

Current interior lighting design way that is consisting uniformly by designer's experience or simple capacity calculation diversifies according to standard of living elevation and there is problem that do not reflect been individualising resident's change request in lighting plan, design properly. Therefore, because this resident's request, enough judgment data that is worth reflecting dissatisfaction item in design concretely or standard is not saved up in business post, had gotten into bottleneck at lighting design. Diagnose resident's consciousness and feedback degree about interior lighting to existent apartment complex in this research and examined improvement plan. As a result, in the case of illumination, wanted higher brightness and showed reason that is most Afirmativ about order way of lighting fixtures. The reason is because can select registration nine that want by oneself directly. Plan qualitative elevation of house lighting environment making lighting image which is coincided in our real condition, and is thought to reflect various resident's character, fondness in design and solved dissatis faction.

주암댐 주변지역의 인문, 자연환경과 보전

김준선,장석모,김종홍 順天大學校 1992 論文集 Vol.11 No.1

주암댐이 건설됨에 따라 유역인구는 감소하였고, 전답은 침수되어 농업이 쇠퇴하여 댐 건설 전과 댐 건설 후의 인문환경은 차이가 있었다. 댐 주변지역의 기상은 안개일수의 증가와 일조시수의 감소가 뚜렷하여 내수면 증가에 따른 기상변화가 확인되었다. 현존 식생은 소나무림과 낙엽활엽수림으로 구성되었고 이는 7개의 자연군락과 10개의 대상군락으로 구분되었으며 식재림이 도처에 산재하였다. 댐 주변지역의 식물은 41목 122과 433속 629종 2아종 109변종 12품종으로 총 752종이 관찰되었다. 한편 녹지자연도 5, 7, 8이 대부분의 지역을 차지하였으며 수역이 증가하였고 어류상과 동물상의 변화는 생태계의 먹이사슬에 영향을 미치는 것으로 판단되었다. The population and the number of household around Juam-Dam watershed dscreased after the construction of the Dam. Lots of dry fields and paddy fields were submerged, which resulted in the decline of agriculture. Cultural environment, thus, seemed to have been changed in the area around Juam-Dam. Climatic changes were also observed between before and after the construction of the Dam. Especially foggy days were more frequently observed and photoperiod decreased in 1990 than previous years. Actual vegetation consisted of pine forests and broad-leaved forests. Nine kinds of natural forest community and 10 dinds of substitutional vegetation were classified in the surveyed area. Artificial forests were scattered in places. As for flora, a total of 752 species, that is 41 orders, 122 families, 433 genera, 629 species, 2 subspecies, 109 varieties and 12 forma, were observed. Degree of green naturality (DGN) of 5, 7, 8 was rated in the greater part of surveyed area with the increase of waters. As fishes and fauna changed, food web might be affected by deterioration of ecosystem.

口眼渦斜 患者의 Gadolinium-DPTA enhanced MRI 所見에 대한 臨床的 考察

김재수,최우석,김용석,고형균,강성길,김창환 경희대학교 동서의학연구소 2001 東西醫學硏究所 論文集 Vol.2000 No.-

This study is designed to evaluate the clinical implications of Gd-DPTA (Gadolinium-diethyl - enetriamine pentacetic acid) enhanced MRI(Magnetic resonance imaging) in Bell's palsy and find it's usefulness in Oriental Medicine In this study, 25 outpatients with Bell's palsy were studied that MRI was performed. To evaluate degree of facial palsy, H-B(House-Brackmann) Grade was used. In Oriental Medical therapy, Acupuncture and Herbal medicine were treated. Subjective causes was divided into exposure to chill, fatigue, stress, mixed cases. Enhanced site was compared with symptoms which were disorder of eye, hearing, taste, and facial muscle palsy. Also, Relation between time which was performed MRI and enhancement was analyzed. The enhanced lesion in MRI was divided into five segments; Internal auditory canal, Labyrinthine segment, Geniculate ganglion, Tympanic segment, Mastoid segment. In Bell's palsy, 20 of 25 patients(80%) had abnormal contrast enhancement of the facial nerve. The H-B grade and interval performed MRI from onset were directly proportionate to enhancement. That is to say, Severe facial palsy short interval show high possibility of enhancement. There was no relation between subjective causes and enhanced site of facial nerve in MRI. Also Clinical symptoms didn't coincide with MRI findings.