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Host Preference by the Small Brown Planthopper and Green Rice Leafhopper on Barley and Water Foxtail (I) (보리와 둑세풀에 대한 애멸구$\cdot$끝동매미충의 기주 선택성(제1보))

  • Choi S. Y.;Lee H. R.
    • Korean journal of applied entomology
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    • v.15 no.4 s.29
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    • pp.179-184
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    • 1976
  • Laboratory experiments were conducted to clarity the early-spline host·selectivity by the small brown planthopper(SBPH), Laodelphax striatellus Fallen, and green rice Leafhopper(GLH), Nephotettix cincticeps Uhle., on the bailey (the variety Suweon #18) and water foxtail (Alopeculus aequadis Sosbol). The host selectivity was evaluated on the bases of feeding and ovipositional perferences of the insects on the plants and their biological effects on the plants. The nymphs of SBPH much more preferred barley for feeding than water forxtail, while the nymphs of GLH relatively prefered water foxtail. There was no significant difference in ovipositional preference by SBPH among the test plants, and ovipositional preference by GLH Ivas significantly lower on barley and water foxtail than on rice. Nymphal growth an4 adult emergence of SBPH were significantly faster and higher on barley than on water foxtail. No adult emergence of GLH was observed on barley, and adult emergence was still quite lower even on water foxtail. The adult of SBPH fed on barley showed longer longevity aad higher fecundity than that of SBPH from water foxtail and rice. The adult GLH fed ell water foxtail shorted relatively shorter longevity and to)ver fecundity than that of GLH on rice. In conculsion, barley seems to be more adequate for spring host of SBPH than water foxtail, but barley may not be quite adequate for spring host of GLH. At presont moment, GLH seems rather to primarily select the water foxtail than barley as a spring host, even if the water foxtail is not so adequate for development of GLH.

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A Study on the Biology of Nesodiprion japonicus($M_{ARLATT}$) (솔잎벌의 생능에 관한 연구)

  • 이찬용;김인래
    • Korean journal of applied entomology
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    • v.33 no.2
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    • pp.60-65
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    • 1994
  • This study was carried out to investigate the ecology of Nesodiprion japonlcus (Mmm,m) damaging many conifers The results obtained were as follows: Nesod~prion japonicus (Maun) emerged two times for a year and their body was black m both sexes. A female (10.1t 1 2 mm) adult was larger than a male (9.9t 0.8 mm) one in the body size. The size of antenna as plumose of female was different from that of male. Life span of adults was 3 or 4 days, those emergence rate was 92% and sex ratio of female to male was 6: 4. Adults 1a1d only an egg in the leaf and the region of the leaf aviposited turned brown. Duration of egg was 14.35 1 2 days, egg was In the shape of banana and red~sh-yellow,a nd its sire was 2.4+ 0.2 mm long. Duration of larvae was 30.35 2.1 days and its slze 20.15 2.2 mm, body was green with grey~sh shipes on the dorsal and lateral aspect, the tip of front and hind was yellow and head was brown with a dark-p~gmented area. Mature larva turned into light green and get lost a dark-pigmented area of head. The firstly-emerged larva made cocoons on the base of leaves and the secondawemerged larva among fallen leaves Duration of prepupa was 14.3f 2.0 days and their size 10.15 2.3 mm Duration of pupa was 12.2+ 1.3 days and its size 10.lt0.2mm.

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Switching Positionality of Border Region as Exceptional Space (예외 공간으로서 접경지역의 위치성 전환)

  • Kim, Boo-Heon;Lee, Sung-Cheol
    • Journal of the Economic Geographical Society of Korea
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    • v.20 no.3
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    • pp.267-286
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    • 2017
  • The main purpose of this paper is to identify the spatiality of North Korea and China border regions through investigating the exceptional characteristics of the regions with the concept of positionality, which allows us to realize the relative position between subject and object. Border regions could be identified appropriately by considering the concept of switching positionality, as it is a kind of multiple space in which its sudden closure and opening should be configured in accordance with geopolitical and geoeconomic changes centering around border line. The main arguments of this research concerned with border regions with the concept of switching positionality are fallen into three. Firstly, changes in border regions should be analyzed by investigating more broader contexts and conjunctural perspectives, and even an internal condition stemmed from locality. Secondly, trajectories of border regions could be analyzed by the assemblages of various powers. Finally, the positionality of economic actors should be examined by identifying dynamic relations between geoeconomics and geopolitics. In particular, the concept of positionality has led to a number of insights into discussions on time-space, and spatiality in relational-dialectical, socio-spatial, and power-topological perspectives. Based upon this concept of positionality, the research has identified exceptional characteristics in North Korea and China border regions. It argues that the exceptionality of the region has stemmed from the intersection between the unstability of geopolitical security and various geoeconomic benefits.

Konjuktivgebrauch in der indirekten Rede (간접화법에 있어서의 접속법의 사용)

  • Kim Tae-Seong
    • Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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    • v.6
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    • pp.185-219
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    • 2002
  • Die vorliegende Arbeit soll einen Beitrag zu $Verst\"{a}ndnis$ des Konjunktivs(=Konj.) leisten. Insbesondere geht es um die Verwendung des Konj. in der indirekten Rede. Die Belegmaterialien zum Konjunktivgebrauch wurden politischen und wissenschaftlichen Zeitungsartikeln entnommen, im Wesentlichen der 'Welt' und der 'FAZ'. Obwohl in der deutschen Gegenwartssprache offenbar ein Wandel im Modusgebrauch im Allgemeinen var sich geht, lasst sich sagen, dass in den Pressemeldungen der Kanj. I $durchg\"{a}ngig$ verwendet wird. Die Mouswahl $f\"{u}r$ den Konj. I ist nicht nur ein Kennzeichen $f\"{u}r$ mittelbare Redewiedergabe, sandern sie kann in bestimmten $F\"{a}llen$ ein Sprechereinstellung $ausdr\"{u}cken$, da der Konj. I in den $dass-Kamplements\"{a}tzen$ allgemeiner an $Nichtfaktivit\"{a}t$ gebunden ist $F\"{u}r$ die sog. 'berichtete Rede' ist der Konj. I als Zitierzeichen obligatorisch. Bei der morphologischen Betrachtung wurden die Charakteristika der morphologischen Formbildung im Konj. beschrieben. Im Kanj. werden alle Farmen mit 'e' gebildet. Es wird angenommen, dass der Schwa-Laut des Kanj. in der Regel varhanden sei, es aber nicht ein Marphem sei. Die Ersetzung des Kanj. I durch den Kanj. II in der indirekten Rede hat ihren Grund in der mangelnden $Distinktivit\"{a}t$ zum Indikativ $Pr\"{a}sens$. Im Kanj. II wird der Umlaut als Konjunktivmarker der starken Verben angesehen. Im Unterschied zu den starken Verben fallen Indikativ und Kanj. im $Pr\"{a}teritum$ der schwachen Verben, die keinen Vokalwechsel haben, formal zusammen. In diesem Fall wird der Kanj. durch die wiirde-Konstruktian ersetzt. Im Rahmen der syntaktischen Betrachtung wurden die Konkurrenzformen vorgestellt. Die indirekte Rede kann durch vielerlei grammatische Mittel angezeigt werden. In diesen $F\"{a}llen$ wird statt des Hauptsatzes eine grammatisch-lexikalische Paraphrase (mit Hilfe von $Pr\"{a}positionalgruppen$ mit nach, zufolge oder laut beispielsweise, und wie- $S\"{a}tzen,\; dar\"{u}ber$ hinaus Modalverben sollen und wollen) verwendet. Schliesslich wurde darauf hingewiesen, dass die $w\"{u}rde-Paraphrase$ zwar eine Umschreibung des Konj. sein kann, dass einer solchen $F\"{u}gung$ aber der $Temporalit\"{a}tscharakter$ nicht abgesprochen wird, insofern die $Temporalit\"{a}t\;mit\;der\;Modalit\"{a}t$ zu tun h

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ORTHODONTIC TRACTION AFTER THE TRAUMATIC INTRUSION OF UPPER CENTRAL INCISOR (외상에 의하여 함입된 상악 중절치의 교정적 견인)

  • Han, Yoon-Beum;Lee, Jae-Ho;Choi, Hyung-Jun;Sohn, Hyung-Kyu;Kim, Seong-Oh;Song, Je-Seon;Choi, Byung-Jai
    • Journal of the korean academy of Pediatric Dentistry
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    • v.36 no.2
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    • pp.293-297
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    • 2009
  • Traumatic intrusion is a type of injury that involves axial displacement of a tooth toward the alveolar bone. Its occurance is relatively rare compared to other types of luxation in permanent dentition. It is more common in boys than in girls, and most common etiology of intrusion is fallen down. Various complication may occur following traumatic intrusion, such as pulp necrosis, root resorption, pulp obliteration and marginal bone loss. In addition, traumatic intrusion is commonly combined with hard or soft tissue injuries. Therefore, it is difficult to establish proper treatment plan. Choice of treatment for an intruded tooth by trauma include waiting for spontaneous re-eruption, orthodontic repositioning, and surgical repositioning. In this case, we repositioned the intruded central incisor using orthodontic traction, in a six-year old girl, which failed to re-erupt spontaneously.

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A Study of the City of Guangzhou in the Geographical Perspecives (광저우(廣州)에 대한 지리적 고찰(考察))

  • Sohn, Yong-Taek
    • Journal of the Economic Geographical Society of Korea
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    • v.14 no.3
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    • pp.407-418
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    • 2011
  • The southern region including Guangzhou(黃州), the capital of Guangdong Province, was called "South of the Mountain Range" (嶺南) because it is located south of the Five Mountain Ranges (五嶺) which made mobility difficult prior to unification of China by Qin dynasty (秦) in 221 BCE. The Guangdong region of the South of the Mountain Range (嶺南) was an administratively independent unit and, as such, called the Nanyue kingdom (南越國). This is the origin of the Chinese character "yue", and terms such as yueyu (Cantonese), yuecai (Cantonese cuisine), yueju (Cantonese opera) are still in use today. Guangzhou, called Panyu (番禹) during the Nanyue kingdom period, was settled early in the northern part of the Pearl River (珠江, Zhu Jiang) delta. It became the first port to open its doors to the great powers of the West during the Qing period. Although it has now fallen behind Shanghai which developed later, Guangzhou is still the third largest city after Beijing and Shanghai, and thus, it is an influential open coastal city. Today, not only is Guangzhou the world center of the light textile industry, it also spurs development in various manufacturing industries. Along with nearby Hong Kong, Macao, and Shenzhen, it plays the role of cradle of the Pearl River delta economic zone. Firmly established early on as the greatest central city in southern China, Guangzhou is simultaneously a hub in various aspects such as regional politics, economics, and culture; it was also the center of revolution and resistance which attempted to challenge the northern political powers. Guangzhou is known for the history of the rise and fall of its port, but with developmental efforts, it still maintains its influence. Guangzhou's dynamic development of today brings with it issues such as the environment and moral system which must be dealt with.

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Influence of Heat Treatment on Transformation Characteristics and Shape Recovery in Fe-X%/Mn-5Cr-5Co-4Si Alloy Ribbons (Fe-X%Mn-5Cr-5Co-4Si 합금 리본의 변태특성 및 형상기억능에 미치는 열처리 영향)

  • Kang, H.W.;Jee, K.K.;Jang, W.Y.;Kang, J.W.
    • Journal of the Korean Society for Heat Treatment
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    • v.14 no.3
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    • pp.160-166
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    • 2001
  • The change of ribbon geometry, microstructure and shape recovery with Mn contents, wheel speed and various annealing temperature have been studied in Fe-X%Mn-5Cr-5Co-4Si (X%=15, 20, 24) shape memory alloy (SMA) ribbons rapidly solidfied by single roll chill-block melt-spinning process. The thickness and width of melt-spun ribbons are reduced, results in refining and uniformalizing grains with increasing wheel speed. In the ribbons melt-spun at a wheel speed of 15m/sec, both ${\varepsilon}$ and ${\alpha}^{\prime}$martensites are formed in ribbon 1 (15.5wt%Mn), while only ${\varepsilon}$ martensite is revealed in ribbon 2 (20.2wt%Mn) and ribbon 3 (23.5wt%Mn). The volume fraction of ${\varepsilon}$ martensite is decreased with increasing Mn contents, and those of ${\varepsilon}$ as well ${\alpha}^{\prime}$martensites are increased due to thermal stress relief and grain growth with increasing annealing temperature. Ms temperatures of the ribbons 1, 2 and 3 are fallen with increasing Mn contents. $M_s$ temperatures of the ribbons 1, 2 and 3 annealed at $300^{\circ}C$ for 3 min are risen abruptly, but are nearly constant even at higher annealing temperature, i.e., 400, 500 and $600^{\circ}C$ for 3 min. Shape recovery of the ribbons 1, 2 and 3 increased 30%, 52% and 69% with Mn contents, respectively. Shape recovery of ribbon 1 (15.5wt%Mn) formed ${\varepsilon}$ and ${\alpha}^{\prime}$martensites decreased because of the presence of ${\alpha}^{\prime}$martensite but those of ribbon 2 (20.2wt%Mn) and ribbon 3 (23.5wt%Mn) formed ${\varepsilon}$ martensite increased with increasing annealing temperature.

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Traditional Jeupjang - A Study on Traditional Jeupjang (Succulent Jang) - (전통즙장 - 전통 즙장에 대한 연구 -)

  • Ann, Yong-Geun;Moon, Young-Ja
    • The Korean Journal of Food And Nutrition
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    • v.28 no.5
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    • pp.835-848
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    • 2015
  • In the past, Korea had many kinds of jeupjang (succulent jang), a rapidly maturing original Korean jang (fermented soybean paste) of which there is no record in Chinese cookbooks. However, this local delicacy has almost been forgotten. Therefore, we looked for information about jeupjang in cookbooks written prior to the Joseon Dynasty in Korea (1392~1910) and in the 1950s. Among the recipes, there were 34 jeupjangs prepared with vegetables, such as eggplant and cucumber, and 9 without. The main ingredients of jeupjang are soybean, bran (wheat crust), and barley, and wild wheat is also used. Jeupjang is made in small portions to expedite its rapid maturation, but the most common form is egg-shaped, and there is also a flat or round, hilt-shaped version. In most cases, jeupjang consists of a mixture of meju powder (moldy soybean), water, and salt. Other ingredients can include nuruk (moldy bran), bran, wheat flour, an alcoholic beverage, maljang (dried fermented soybeans), ganjang (liquid soy sauce), malt, and takju (Korean murky wine). Jeupjang meju can be fermented in a vessel, most widely in baskets made of straw (sum and dungumi) or willow or interwoven twigs (chirung), but jars can also be used. The leaves of the paper mulberry are generally used for the mat and cover, but straw or leaves of the sumac, mulberry, or pine tree, soy, and fallen leaves are also used. Unlike other jangs, jeupjang is matured at $60^{\circ}C$ to $65^{\circ}C$, using heat emitted from the decomposition of horse dung, haystacks, or manure. Jeupjang became defunct or was transformed into jeomjang, jiraejang, mujang, paggeumjang, makjang, jipjang, and tojang. These jangs differ from jeupjang in that they use rice, malt, or hot pepper powder.

Performance Test for the Long Distance Sprayer by an Image Processing (영상처리를 이용한 광역방제기 팬의 성능실험)

  • Min, B.R.;Kim, D.W.;Seo, K.W.;Hong, J.T.;Kim, W.;Choi, J.H.;Lee, D.W.
    • Journal of Animal Environmental Science
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    • v.14 no.3
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    • pp.159-166
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    • 2008
  • This research was carried out to test and analyze capacity of the long distance sprayer fan in large livestock farmhouses. Long distance sprayer was manufactured to be able to spray a lot of water, which was a solvent for agricultural chemicals and black dye with the maximum spraying distance of 140 m and the effective spraying distance of 100 m. The spraying quantity and the distance were measured the intensity values of images within A4 papers, which absorbed the agricultural chemicals by spraying by binary image processing. These A4 papers were fixed upon the height of 1 m from soil ground at regular 10 m interval. After the A4 papers were collected and analyzed the intensity values of gray level. Gray level was ranged from 0 to 255, where 0 was black and 255 was white. A4 paper was fallen down from the stick at 10 m distance, because there were too large amount of sprayed water with black dye. Also, the paper showed low gray level at distance 30 m because of dropping lots of black water. The intensity value of gray level was showed almost less than 200 on the A4 papers between the distance 20 m and 100 m, which meant equality of spraying quantity. Additionally, it was possible to spay agricultural chemicals of until 180 m. Throughout this research, long distance sprayer could apply for preventing hoof-and-mouth disease in large livestock farmhouses.

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Identification and Ecological Characteristics of Bacterial Blossom Blight Pathogen of Kiwifruit (참다래 꽃썩음병균의 동정 및 발생생태)

  • Shin, Jong-Sup;Park, Jong-Kyu;Kim, Gyoung-Hee;Park, Jae-Young;Han, Hyo-Shim;Jung, Jae-Sung;Hur, Jae-Seoun;Koh, Young-Jin
    • Research in Plant Disease
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    • v.10 no.4
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    • pp.290-296
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    • 2004
  • Bacterial blossom blight is one of the most important diseases of kiwifruit (Actinidia deliciosa). The disease occurs during flowering in the late May and disease outbreaks associated with rainfall during the flowering season have resulted in a severe reduction in kiwifruit production. The causal organism isolated from diseased blossoms of kiwifruits was identified as Pseudomonas syringae pv, syringae based on the physiological and biochemical characteristics and pathogenicity test. Dead fruit stalks, dead pruned twigs, fallen leaves and soils mainly provided R syringae pv. syringae with overwintering places in the kiwifruit orchards, and the inocula also overwintered on buds, trunks, branches, and twigs on the kiwifruit trees. Among the overwintering places, the incula were detected in the highest frequencies from dead fruit stalks. The population density of P. syringae pv. syringae was speculated to be over $1{\times}10^4$cfu/ml for the bacterial infection, and the optimum temperature for the bacterial growth ranged 20 to $25^{\circ}C$. The highest population density of P. syringae pv. syringae on the overwintering places was detected in May and June when the daily average temperature coincided with the optimum temperature for bacterial growth of P. syringae pv. syringae.