이화명충(二化螟蟲) 발육(發育)의 지역적(地域的)인 차이(差異)를 조사(調査)하기 위해 전국(全國) 8 개(個) 지역(地域)에서 1984년(年) 11월(月) 하순(下旬)부터 12월(月) 하순(下旬)까지 월동중(越冬中)인 이화명충(二化螟蟲) 유충(幼蟲)을 채집(採集) 하여 1985년(年) 1월(月) 15일(日), 2월(月) 15일(日) 2차(次)에 걸쳐 가온사육(加溫飼育)하였다. 1. 용화전기간은 2차(次) 가온사육(加溫館育)에서 춘성산(春城産)이 17.9일(日)로 가장 빠르고 광산산(光山産)이 27.7일(日)로 늦었으며 1, 2차(次) 모두 위도(緯度)가 높은 지역(地域)에서 발육기간(發育期間)이 빠르고 위도(緯度)와 평균(平均) 용화전기간 사이에는 부(負)의 상관관계(相關關係)가 있었다. 2. 평균(平均) 용기간은 지역간(地域間) 큰 차(差)는 없었으며 우화(羽化)까지의 기간(期間)은 용화전기간과 같은 경향(傾向)이었다. 우화(羽化)는 위도(緯度)가 높은 지역(地域)에서 빨리, 낮은 지역(地域) 에서 늦게 되었다. 3. 우화양상(羽化樣相)은 춘성(春城), 평택산(平澤産)은 뚜렷한 peak 가 있었으나 논산(論山), 이리(裡里), 광산산(光山産)은 뚜렷한 peak가 었이 불규칙(不規則)하게 우화(羽化)하였다.

수잉기에 지엽엽초내의 유수를 도열병균포자현탁액으로 주사접종후 목도열병병징발현시의 잠복기간을 구명하였다. 접종일로부터 병징발현시까지 일이 소요되었는데 병원균의 발아, 부착기형성, 침입, 감염이 일어나기까지의 소요일수 약 2일간을 감안할 때 목도열병의 잠복기간은 9일에서 13일 사이로 측정되었다.

濟州道內 6個部落 共同牧場 野草地를 對象으로 野草의 生産性과 植生比率이 家畜 增體에 미치는 效果를 究明하기 위해 1981년 5월부터 동년 11월까지 調査, 分析한 結果는 다음과 같다. 1. 乾物收量은 7月收穫보다 10月收穫에서 2培二上 높았으며 모든 牧場이 같은 趨勢였다. 2. 野草의 祖蛋白質 含量은 7월보다 10월에서 낮았으며 粗纖維는 그 반대였다. 3. 牧場別로 볼 때 1일 增體量이 높은 河源과 海安牧場이 野草의 組蛋白質 含量이 가장 높았고 增體率이

전남지역(全南地域)의 간척지(干拓地), 간사지(干潟地) 및 하천제방(河川堤防) 등에 널리 자생(自生)하고 있는 갈대에 대(對)하여 1982년(年) 5월(月)부터 동년(同年) 10월(月)까지 전남 영암군 군서면 해창리, 함평군 학교면 곡창리, 광양군 진월면 망덕리 지역(地域)의 간척지(干拓地), 하천제방(河川堤防) 및 간석지(干潟地)를 중심(中心)으로 생육시기별(生育時期別), 지역별(地域別) 수량(收量), 영양소(營養素) 함량(含量) 및 in-vitro

한국의 거세미류중에서 숯검은밤나방이 과연 우점종인가를 밝히고 그 가해기간 및 가해기의 유충령기를 조사하였다. 년의 조사결과 숯검은밤나방유충이 봄철에 채집된 거세미류중 약 이상을 차지하며 밭작물의 피해초기에는 대부분이 령충으로 가해기간은 약 개월이 됨을 알 수 있었다. 이 해충의 영명을 'dark grey cutworm'으로 명명하였다.

알루미나이징강에 대하여 초기마모영역에서 rolling-sliding 마모시험을 한 결과를 요약하면 다음과 같다. 1) 2차 확산재의 내마모성이 가장 우수하고 처녀재에 비하여 저응력 레벨에서 약 18%, 고응력에서 약 40%의 마모감소를 나타낸다. 2) 2차 확산재는 피복층과 합금층 경계부근의 공공생성으로 인하여 예상보다 내마모성이 낮다. 3) 알루미나이징강의 rolling-sliding 접촉에 의한 마모파양의 형태는 spalling 이며 spalling crack은 합금속의 경계부근에서 발생한다.

Il-Cohin of the 24 subseasons is found to be repeated in the period ut 103, solar yeors. And that of the date in the old Chinese calendar xear is, repeating in the period of 102 solar years. It is also found that the length of lunar month is repeating in nearly 64solar years.

본 시험은 우리나라 씨감자 주요 생산지인 대관령지방에 분포되어 있는 역병군의 생리형을 조사 판별하기 위해 71-73년에 걸쳐 수행되었던 바. 1. 1971년에는 68계통을 분리 접증 했는데 Race 0, Race 1, Race 2, Race 3, Race 1.3, Race 1.4, Race 3.4, Race 1.3.4, Race 2.3.4, Race 1.2.3.4등 10가지 생리형이 간별 되었으며 그중 Race 0와 Race 3가 제일 널리 분포 되었었고 2. 1972년에는 62계통을 분리 하였던 바 Race 0, Race 1, Race 4, Race 1.3, Race 1.3.4등 5가지 생리형이 나타났으며 그중 전해에 이어 Race 0가 널리 분포되어 있었다. 3. 1973년에는 76계통비서 Race 0, Race 3, Race4, Race 1.3, Race 3.4 Race 1.3.4 등 9가지 생리형이 나타났던 바 Race 0와 Race 4가 가장 널리 분포 되어있는 생리형으로 나타났다. 4. 이로써 우리나라에는 Race 0, Race 1, Race 2, Race 3, Race 4, Race 1.3, Race 1.4, Race 3.4, Race 1.3.4, Race 2.3. 4,Race 1.2.3.4 등 11가지 Race가 존재함이 밝혀졌으며 Race 0, Race 3과 Race 4가 가장 널리 분포 되어있는 생리형으로 나타났다. 5. 이와 같이 생리형은 매년 기후조건의 차이에 따라 발생정도가 다름을 알 수 있다.

Since the reform and opening up, China has maintained rapid economic growth for nearly 40 years, and is the country with the fastest economic growth in the world. However, the rapid economic growth has also paid a huge social price, which is directly related to the unreasonable economic structure and extensive growth mode. Traditional engines of economic growth began to fade. This paper through the analysis to the theory of ancient and modern Chinese and foreign economists study on economic growth: economic growth is an extremely complex process, many factors influence the economic growth, correctly grasp the role of these factors in economic growth, to grasp the law of economic growth, the correct understanding of modern economic growth is very important. Sustained economic growth in China, on the basis of dynamic analysis, combined with the current economic situation at home and abroad, as you can see, in the high-speed economic growth since reform, various factors have been attenuation or mutation, the major developed countries and regions for the adjustment of the external imbalance in pressure, the depth of the global economic growth and recovery of the factors of uncertainty, It is difficult to maintain and improve the driving force and source of China’s economic growth in the future. The current industrialization process has reached a historical and international high level and is nearing the end. The growth rate of industrial investment will slow down significantly in the future. The demographic dividend is gradually depleting, and the savings rate will gradually decrease in the future. The era of rapid economic growth brought by demographic dividend and high savings rate in a long period of time will change. Therefore, based on the perspective of supply side demand and the development of new industries, the paper analyzes the driving force of traditional economic growth in China in the past, and holds that the driving force of consumption upgrading and digital economy are the important driving force of economic growth, and strives to improve the consumption structure of residents, increase the consumption rate and vigorously develop digital economy. Shifting China’s economic growth from relying on external demand to relying on domestic demand will provide strong support for high-quality development.

2020년 초 코로나가 온 세계를 휩쓸어 전 세계 경제에도 심각한 충격을 줬지만, 중국 전자상거래는 이번 사태에서 새로운 발전을 보여주고 있다. 본고에서는 코로나 이후 중국 전자상거래 새로운 소비 증의 발전, 신 유형 출현, 코로나로 인한 물류 발전, 중국 크로스보더 이커머스(cross-border e-commerce, 跨境電商)등의 측면에서 중국 전자상거래의 새로운 변화를 파악하고 코로나 시대 중국 전자상거래가 직면한 문제점과 시사점을 제시하였다. 예를 들어 전자상거래 플랫폼 관리의 미흡하다, ‘쭝차우(種草)’패턴은 소비자의 충동적 소비를 쉽게 유발한다, 신유형 전자상거래 모델이 성숙하지 않다, 콜드 체인 운송비용이 높다, 크로스보더 이커머스 물류체계가 미비하다. 농촌 지역 전자상거래 발전이 낙후된다, 전자상거래 전문인력이 부족하다. 이를 바탕으로 전자상거래 플랫폼 규제 강화, 건전하고 이성적인 인터넷 소비환경 조성, 전자상거래의 새로운 패러다임 육성, 농촌 전자상거래, 크로스보더 이커머스 인프라 강화, 스마트 물류의 커버리지 향상, 인재양성 중시 등의 대책과 건의 등을 제시해 중국 전자상거래의 장기적인 발전을 도모한다.

The spatial characteristics of typhoon-class strong wind during the non-typhoon period were analyzed using, a cluster analysis of the observational data and of special strong wind advisories and, warnings issued by the Korean Meteorological Administration. On the Korean Peninsula, strong winds during non-typhoon periods showed a wide variety of spatial characteristics. In particular, the cluster analysis showed that strong winds could be classified into six clusters on the Korean Peninsula, and that the spatial distribution, occurrence rate of strong winds, and strong wind speed in each cluster were complex and diverse. In addition, our analysis of the frequency of issuance of special strong wind warnings showed a significant difference in the average frequency of strong wind warnings issued in metropolitan cities, with relatively high numbers of warnings issued in Gyeongsangbuk-do and, Jeollanam-do, and low numbers of warning issued inland and in other metropolitan cities. As a result of the changing trend in warnings issued from 2004 to 2019, Ulsan and Busan can be interpreted as having a relatively high number of warnings; the frequency of strong wind warnings issuances and strong wind occurrences in these cities is increasing rapidly. Based on the results of this study, it is necessary to identify areas with similar strong wind characteristics and consider specific regional standards in terms of disaster prevention.

로나 바 이러스는 관광 산 업에 심각한 충 격을 주었으며, 이로 인해 관광 시장의 특 징과 관광 소비자의 선호도가 변화되기 시작하였다. 본 논문은 코로나 이후 중국 관광시장의 변화 추이 특징을 분석하고, 중국 관광 발전이 직면한 주요 모순을 파악하여 이를 기초로 코로나 이후 중국 관광 산업의 발전을 6가지 측면에서 대응책과 건의를 제시하였다.

This study analyzed how the impacts of major teleconnection patterns on December mean temperature in Korea have been changed during the period before and after the regime shift of 1986 for the last 61 years from 1958 to 2018. During the period before the regime shift, the teleconnection patterns originating from the North Atlantic mainly affected the temperature variability in Korea, but its influence almost disappeared after the regime shift. On the other hand, the Arctic Oscillation (AO) and warm Arctic and cold Eurasia (WACE) patterns played a more important role in the temperature variability in Korea after the regime shift. Regression analysis showed that the AO could explain about 12% of the total temperature variability before the regime shift, but about 22% after the regime shift. WACE pattern also explained about 4% before the regime shift, but after the regime shift, the importance increased by about 4.5 times to 18%. On the other hand, East Atlantic pattern (EA) and North Atlantic Oscillation (NAO), which are east-west teleconnection patterns, explained 27% and 11%, respectively, before the regime shift, but had little influence within 3% after the regime shift. This means that the influence of east-west teleconnection patterns disappeared after the regime shift, and teleconnection patterns by the Arctic Circle became more important.

This study was conducted to investigate the distribution of duck production in duck housing as a function of the breeding period. The items in duck production distribution included body weight, feed intake, feed conversion ratio, and average duck production. All data were based on eight cycles (June and December, 2017; February, June, August, September, and November, 2018; February, 2019) at Farm Site 1 through 7. The most optimal results in the duck production distribution were observed at Site 1 for weight gain, feed intake, and feed efficiency. This could be explained by the fact that Site 1 was well managed in environmental improvement and sustainability. Based on these data, selective alternatives to improve duck production in duck farms are recommended as follows: first, proper management and recording of litter used as a flooring material are required, and second, continuous management such as temperature, relative humidity and ventilation is needed. Lastly, it is necessary to change duck facilities by introducing environmental management techniques. Furthermore, efforts to improve the overall facilities and management of duck breeding farms through additional field studies are needed in the future.

Since the beginning of 2020, Corona-19 has broke out and spread around the world. In order to control the epidemic, China has adopted a series of measures such as delaying the resumption of work and production of enterprises, compulsory closure of restaurant and entertainment business, which have effectively contained the spread of the epidemic to a large extent. However, a series of policies in response to the epidemic have also traumatized the economy. In particular, it has caused great difficulties to the operation of small and medium-sized enterprises. This article conducted a questionnaire survey on the status of SMEs (small and medium-sized enterprises) affected by the epidemic. The results of the survey show that 85% of SMEs have a cash balance that is able to support operation for less than 3 months, indicating that SMEs have a high risk of financial vulnerability, and most SMEs face the risk of capital disruption and crisis. The central and local governments have successively issued hundreds of policies to help small and medium-sized enterprises overcome the difficulties. In addition to the well utilization of supporting policies of the government, small and medium-sized enterprises should seek self-help and development based on their own particularly on the working capital management. In this process, small and medium-sized enterprises need to be more conservative, pay attention to reducing expenditure, try to save cash by negotiation and signing agreements etc. and set scientifically credit conditions, use the Internet to strengthen cooperation, expand sales channels and smoothly survive this difficult epidemic period.

Lentinula edodes mushrooms cultivated under different relative humidities were wrapped at 4℃ and the results of storage characteristics were investigated. Changes in water content of fruiting bodies during the storage period showed the highest water content in fruit bodies harvested from the treatment with the highest relative humidity. The luminosity of the fresh fruiting bodies showed no significant change during the storage period, and the redness was higher in the relative humidity 95% treatment than in the other treatments. According to this study, the relative humidity of the pileus was 65%, and the content of Ergosterol was 0.67 ± 15 g / L at relative humidity of 65%, 80% and 95%. In addition, amino acid analysis and Principal Component Analysis (PCA) confirmed that methionine was the main cause of changes in storage time and relative humidity.