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        검색결과 1,597

        347.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A new species of free-living marine nematode is described from intertidal sediments of the East Sea, Korea. Phanoderma koreense sp. nov. is characterized by the presence of well-developed pharyngeal and cephalic capsule, six inner labial sensilla present as minute papillae around with circular groove, long and slender spicules with 4-5 serrated distal end, located at the base of the precloacal supplement, a series of eight to nine stout and short setae on the ventral cloacal region and conico-cylindrical tail with two pairs of blunt setae. In this study, we provide taxonomic descriptions and illustrations of a new species by differential interference contrast microscope and a pictorial key to the valid species of Phanoderma Bastian, 1865. This is the first record of the genus Phanoderma in the East Sea, Korea.
        4,000원
        348.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Hay-making is one of the most common way for forage preservation in livestock industry. The quality and production of hay could be affected by various factors. This experiment was conducted to investigate the effect of tedding time and frequency on drying rate and feed value of forage rye (Secale cereale L.) hay. Rye was harvested on heading stage using mower conditioner. Hay was tedded at each set hour(09:00, 13:00 and 17:00) and sampled at each set hour to determine dry matter (DM) content. After two months’ preservation, CP (crude protein), ADF (acid detergent fiber), NDF (neutral detergent fiber), IVDMD (in vitro dry matter digestibility), TDN (total digestible nutrient), RFV (relative feed value), DM loss, visual scores and total fungi count were determined for estimation of hay quality. Tedding was necessary for both speeding up drying rate and improving forage quality. Tedding at 17:00 showed lower NDF content (p<0.05), and also higher RFV value was found compared with tedding at 9:00 and 13:00 (p<0.05). On the other hand, it was observed that more DM losses would be found when tedding later (p<0.05). Tedding in 1~3 times per day were lower in ADF and NDF content (p<0.05), increased CP, TDN and RFV (p<0.05), got less DM loss (p<0.05), and contained less fungi during conservation compared with no tedding (p<0.05). On the other hand, tedding too frequent caused more DM loss (p<0.05). In conclusion, for shorter drying process and higher quality of forage rye hay, tedding at 13:00∼17:00 for 1∼2 times per day was recommended in this study.
        4,000원
        349.
        2019.09 구독 인증기관 무료, 개인회원 유료
        Clear cell odontogenic carcinoma (CCOC), a very rare neoplasm located mostly in the mandible, has been regarded as a benign tumor. However, due to the accumulation of case reports, CCOC has been reclassified as a malignant entity by the World Health Organization. Patients with CCOC present with regional swelling and periodontal indications with variable pain, often remaining misdiagnosed for a long period. CCOC has slow growth but aggressive behavior, requiring radical resection. Histologic analysis revealed the monophasic, biphasic, and ameloblastic types of CCOC with clear cells and a mixed combination of polygonal and palisading cells. At the molecular level, CCOC shows the expression of cytokeratin and epithelial membrane antigen, along with markers that assign CCOC to the sarcoma family. At the genetic level, Ewing sarcoma breakpoint region 1-activating transcription factor 1 fusion is regarded as the key feature for identification. Nevertheless, the scarcity of cases and dependence on histological data delay the development of an efficient therapy. Regarding the high recurrence rate and the potential of distant metastasis, further characterization of CCOC is necessary for an early and accurate diagnosis.
        3,000원
        350.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Stroke is a health problem experienced by many elderly people around the world. Stroke has a devastating effect on quality of life, causing death or disability. Hemiplegia is clearly an early sign of a stroke and can be detected through patterns of body balance and gait. The goal of this study was to determine various feature vectors of foot pressure and gait parameters of patients with stroke through the use of a wearable sensor and to compare the gait parameters with those of healthy elderly people. To monitor the participants at all times, we used a simple measuring device rather than a medical device. We measured gait data of 220 healthy people older than 65 years of age and of 63 elderly patients who had experienced stroke less than 6 months earlier. The center of pressure and the acceleration during standing and gait-related tasks were recorded by a wearable insole sensor worn by the participants. Both the average acceleration and the maximum acceleration were significantly higher in the healthy participants (p < .01) than in the patients with stroke. Thus gait parameters are helpful for determining whether they are patients with stroke or normal elderly people.
        4,000원
        351.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 게임이용장애 대학생에 대한 감각자극 기반 미술치료 진단 및 개입 방안에 대하여 살펴보기 위하여 검증된 학술지를 분석하였다. 대학생이 게임이용장애에 취약할 수 있으며, 좀 더 주목해야 할 대상군이다. 게임이용장애자들이 시각적 자극에 매우 민감하므로 그들의 민감성을 고려하여 진단과 개입 프로그램이 개발되어야 한다. 온라인 게임 중독자들은 감각에 통해 받아들인 게임 자극을 뇌에서 적극적으로 분석하고 처리한다. 따라서 감각기반 개입방안들이 적극적으로 고려되어야 하고, 이에 대한 기초연구가 다각적으로 이루어져야 한다. 대학생 게임이용장애 원인을 바탕으로 한 진단과 개입을 위한 투사 그림검사는 자아정체감, 자아탄력성, 성인애착과 나무그림, HTP(집-나무-사람), 우울과 발테그 그림검사(WZT), 대학생활 적응수준과 풍경구성기법(LMT), 가족건강성과 동적가족화(KFD), 스트레스 대처방식과 빗속 사람 그림(PITR), 대인관계, 자아탄력성, 애착과 모자화(Mother and Child Drawing), 자아탄력성과 좋아하는 날씨 그림(FKW), 우울 및 조증, 스트레스 대처수준과 사과 따는 사람 그림(PPAT), 우울 및 불안과 별-파도 그림(SWT)이었다.
        4,000원
        352.
        2019.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, activated carbon with well-developed mesopores was fabricated using kenaf short fibers as a representative biomass. Concentrated phosphoric acid was selected as an activation agent to create highly developed porous structures, and pore development was observed to occur in relation to the weight ratio of phosphoric acid and kenaf. The pore characteristics of the kenaf-based activated carbon were determined using the N2/ 77K adsorption isotherm, and its microcrystalline structure was analyzed using X-ray diffraction. The highest specific surface area (1570 m2/g) was observed when the weight ratio of phosphoric acid to kenaf was 3:1, and the highest mesopore fraction (74%) was observed at 4:1. The carbonization yield was 45–35%, which is higher than that of commercial activated carbon. The production of porous carbon material by this method offers high potential for application because it can be controlled over a wide range of average pore diameter from 2.48 to 5.44 nm.
        4,000원
        356.
        2019.07 구독 인증기관 무료, 개인회원 유료
        This study aims to investigate the effect of the core capability of products in eco-friendly stores on perceived CSR and consumers’ purchasing behavior. It is also to verify the moderating mediation effect of store type (multi-category store vs. single-category store). The results indicate that generally, in eco-friendly stores, consumers perceive the core competency of the products, which increases perceived CSR and purchasing intention. In the single-category store (i.e., fashion only) compared to the multi-category store (i.e., food and fashion), consumers perceive that the core capability and CSR are higher and thus they have higher purchase intention.
        4,000원