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        검색결과 1,579

        942.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Supposing that somatotype evaluation results would have significant differences between the public group with less amounts of exercises and the special group with intensive exercises for three to four times a day, this study aimed at comparing the mutual consistency between the results determined by somatotype evaluation tools such as visually calculated index(VCI), Rohrer's Index(RI) and Body Mass Index(BMI). The public, taekwondo players and judo players groups were com˗ posed of fifty persons, taekwondo players and judo players passed through VCI determination, respectively. Their height and weight were examined and analyzed with somatotype evaluation tools. Comparison of somatotype dispersion of RI and VCI showed that most women were determined by VCI as lean type but were deter˗ mined by RI as normal type. And that women were determined by VCI as fat type but were determined by RI as normal type. Therefore both men and women showed significant differences in VCI and RI. Comparison of somatotype dispersion of VCI and BMI showed that both men and women were overestimated or underestimated by VCI rather than by BMI. Comparison of somatotype dispersion of RI and BMI showed that men were less determined by BMI as lean type compared with women; both men and women less determined by BMI rather than by RI as normal type; and both men and women, in particular, were more determined by BMI as fat type but men were more determined by BMI rather than by RI as fat type. Total somatotype consistency by tools showed that VCI has the greatest possibility of determining the public group, compared with other groups as lean type and that the consistency of the three tools were relatively higher for the taekwondo players and judo players groups, compared with the public.
        4,000원
        943.
        2010.03 구독 인증기관 무료, 개인회원 유료
        Glycoprotein hormones have a common α-subunit that is involved in the signaling pathway together with G protein, adenylcyclase and cAMP induction; however, it is an unclear how this common structure is related to hormonal action. To determine the biological functions of the COOH-terminal amino acids in the α-subunit of these glycoprotein hormones, a tethered-molecule was constructed by fusing the NH2-terminus of the α-subunit to the COOH-terminus of the β-subunit of equine chorionic gonadotropin (eCG). The following deletion mutants were created by PCR; Ile was inserted at position 96 to form Δ96, Lys was substituted at position 95 to form Δ95, His was inserted at position 93 to form Δ93 and Tyr was substituted at position 87 to form Δ87. Each mutant was transfected into CHO-K1 cells. Tethered-wt eCG, and Δ96, Δ95, and Δ93 mutants were efficiently secreted into the medium but the Δ87 mutant was not secreted. Interestingly, the RT-PCR, real-time PCR, and northern blot analyses confirmed that the RNA was transcribed in the Δ87 mutant. However, the Δ87 mutant protein was not detected in the medium or the intracellular fraction of the cell lysates. The LH- and FSH-like activities of the recombinant proteins were assayed in terms of cAMP production using rat LH/CG and rat FSH receptors. The metabolic clearance rate (MCR) was determined by injecting rec-eCG (2 IU) into the tail vein. The Δ95 and Δ93 mutants were completely inactive in both the LH- and FSH-like activity assays. The Δ96 mutant showed slight activity in the LH-like activity assay. In comparison to the wild type, the activity of the Δ96 mutant in the FSH-like activity assay was the highest among all the mutants. The MCR assay in which rec-eCG was injected showed a peak at 10 min in all the treatment groups, which disappeared 4 h after injection. These results imply a direct interaction between the receptor and the COOH-terminal region of the α-subunit. The data also reveal a significant difference in the mechanism by which the eCG hormone interacts with the rLH and rFSH receptors. The COOH-terminal region of the α-subunit is very important for the secretion and functioning of this hormone.
        4,000원
        944.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        2 week study was conducted to investigate the effects of Interferential Current(IC) and Kaltenborn-Evjenth Orthopedic Manual Therapy(KEOMT) on functional constipation. Interventions were applied to spinal segments between T9-L2 which provides innerva˗ tions to the gastrointestinal tract. Subjects(n=24) were randomly allo˗ cated to two treatment groups: the IC group or the KEOMT group. Results for the IC therapy demonstrated significant decrease with the colonic transit time(CTT) as well as scores on the constipation assessment scale(CAS). The frequency of defecations per week had increased significantly(p<0.05). The KEOMT displayed decreased CTT in the left colon region. The scores on the CAS were reduced and frequency of defecations per week had increased significantly (p<0.05). This study not only showed that both modes of therapy improved symptoms of constipation, but also optimized gastrointesti˗ nal content movement, eventuating in a more normalized CTT. In conclusion, both the IC therapy and the Kaltenborn-Evjenth Orthopedic Manual Therapy have shown to be effective interventions for improving functional constipation.
        4,000원
        945.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study has been conducted on the subjects of eight undergradu˗ ate students with abdominal obesity and eight undergraduate stu˗ dents with normal weight to find out correlation between substantial fatigue and Ratings of perceived exertion through analysis of their blood components when they took exercises to strengthen their abdominal muscular power. Comparatively analyzing HDL-C, LDL-C and lactic acid before and after they took sit-up at level of RPE 19-20, no statistically significant differences in HDL, LDL, lactic acid meas˗ ures were observed between groups, but a significant difference in RPE was noted between groups(p<0.05) Our findings suggest that control group showed no significant differ˗ ence in increase of fatigue material whereas the obese group showed a lower frequency of sit-up, though both groups took the same abdominal exercise. Additionally, the lower frequency of sit-up in obese group results from relatively higher Ratings of perceived exer˗ tion rather than increase of substantial fatigue material. This study invites future research that examines the effect of a comprehensive obesity exercise program combined with dietetic
        4,000원
        946.
        2010.03 구독 인증기관 무료, 개인회원 유료
        Equine chorionic gonadotropin (eCG) is a heavily glycosylated glycoprotein composed of non-covalently linked α- and β-subunits. To study the function and signal transduction of tethered recombinant-eCG (rec-eCG), a single chain eCG molecule was constructed, and the rec-eCG protein was prepared. In this study, we constructed 5 mutants (Δ1, Δ2, Δ3, Δ4, and Δ5) of rec-eCG using data about known glycoprotein hormones to analyze the role of specific follicle stimulating homone (FSH)-like activity. Three amino acids of certain specific sites were replaced with alanine. The expression vectors were transfected into CHO cells and subjected to G418 selection for 2~3 weeks. The media were collected and the quantity of secreted tethered rec-eCGs was quantified by ELISA. The LH- and FSH-like activities were assayed in terms of cAMP production by rat LH/CG and rat FSH receptors. Then, the metabolic clearance rate analyzed by the injection of rec-eCG (5 IU) into the tail vein was analyzed. The mutant eCGs (Δ1, Δ4, and Δ5) were transcripted, but not translated into proteins. Rec-eCG Δ2 was secreted in much lower amounts than the wild type. Only the rec-eCG Δ3 (β-subunit: Gln94-Ile95-Lys96→Ala94-Ala95-Ala96) was efficiently secreted. Although activity is low, its LH-like activity was similar to that of tethered eCGβα. However, the FSH-like activity of rec-eCGβαΔ3 was completely flat. The result of the analysis of the metabolic clearance rate shoed the persistence of the mutant in the blood until 4 hours after the injection. After then, it almost disappeared at 8 hours. Taken together, these data suggest that 94~96 amino acid sequences in eCG β-subunit appear to be of utmost importance for signal transduction of the FSH receptor.
        4,000원
        947.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to investigate the effects of group exer˗ cise program on depression in the elders with dementia. Subjects of this research were selected from the patients of Hyoja hospital(Yong˗ in, Korea). They were elders with dementia having minor to moderate degrees of cognitive function. Twenty-four subjects were randomly assigned into two groups, each with 12 people; exercise group and the control group. The control group only performed general physio˗ therapy, while the exercise group performed exercise program and general physiotherapy for 8 weeks. Depression of the exercise group and the control group were measured at baseline before the study, at 4 weeks, and at 8 weeks after the study. Depression was measured by Geriatric Depression Scale Short Form Korea Version(GDSSF-K). Firstly, when comparing the levels of depression within the same group, depression was significantly lower in the exercise group, after the group exercise program. However, depression of the control group did not show significant changes before or after the study. Secondly, when comparing the levels of depression of the control group and the exercise group, differences between the levels meas˗ ured before the study and 8 weeks after the study, was a statistically significant decrease of depression. Thirdly, effects of group exercise program according to the applied period were analyzed showing 8 weeks of group exercise to be more beneficial than 4 weeks. People who performed continuous group exercise program showed decrease in depression compared to the absence of group exercise program. This can infer beneficial effects of group exercise program. Group exercise program had desirable influence on decreasing the level of depression.
        4,000원
        948.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 실험은 분식물의 삽목번식시 배지에 첨가한 규산질 비료가 분식물의 발근과 생육에 미치는 영향을 조사하 였다. 칼란코에 ‘Kaluna’와 ‘Taos’ 품종은 50구 트레이 에 번식하였고 카네이션 ‘Kazan’과 ‘Tula’ 품종은 128구 트레이에 삽목하였다. 규산질 비료를 상업배지(토실이 상토, 신안그로)와 펄라이트를 5 : 1(v/v)로 섞어 배지 1L당 규산질 비료[MgCa(SiO3)2]를 0, 40, 80, 120, 또는 160g을 첨가하여 발근한 후 정식하였다. 두 작물 모두 배지 1L당 규산질 비료를 40g 첨가한 처리구에서 초장, 엽두께, 뿌리의 생체중과 건물중이 가장 높았다. 하지만 두 작물 모두 규산질 비료의 농도가 높아질수록 초장이 억제되었다. 주사전자현미경(SEM) 촬영을 통한 식물 조직 관찰 결과 규산질 비료를 첨가해주었을 경우 뿌 리와 잎의 조직이 더 조밀해졌다.
        4,000원
        949.
        2009.12 구독 인증기관 무료, 개인회원 유료
        The miniature pig is considered to be a better organ donor breed for xenotransplantation than other pig breeds because the size of the organs of the miniature pig is similar to that of humans. In this study, we aimed at identifying differentially expressed genes in the miniature pig ovary during pregnancy. For this, we used the miniature pig ovary model, annealing control primer‐based reverse transcription polymerase chain reaction (PCR), quantitative real‐time PCR (qRT‐PCR), and northern blotting analysis. We identified 13 genes showing differential expression on the based of pregnancy status and validated 8 genes using qRT‐PCR. We also sequenced the full‐length cDNA of ephrin receptor A4 (EphA4), which had a significant difference in expression level, and validated it by northern blotting. These genes may provide a better understanding of the cellular and molecular mechanisms during pregnancy in miniature pig ovary.
        4,000원
        950.
        2009.12 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Seoul is one of the most dynamic capital cities in the world of which population is about 10.49 million. The air quality of Seoul subway is a great concern to users and the public authorities, especially the pollution of particulate matters. The metallic particulate matters are generated from the friction of wheels and subway rails, which causes dispersion into the platform and even to the trains. This study attempted to characterize the current filters in subway MVAC system and a newly developed filter which was a type of thin electret fiber bundle. Collection efficiency of the filtration system varies from 20% to 90% depending on filter life and dust particle size. The removal of fine dust with diameter smaller than 1㎛, which could not be well achieved by current filtration system, is very important in the subway air cleaning system. The new electret filter was found to have a high potential for the use in subway MVAC with high collection efficiency, especially for fine mode dust.
        4,600원
        951.
        2009.12 구독 인증기관 무료, 개인회원 유료
        The glycoprotein hormone family represents a class of heterodimers, that includes the placental hormone equine chorionic gonadotropin (eCG) and the anterior pituitary hormones‐ follitropin (FSH), lutropin (LH), and thyrotropin (TSH). The 4 hormones are heterodimers, with a common α‐subunit and unique β‐subunits. eCG is the most heavily glycosylated of the known pituitary and placental glycoprotein hormones. Recent observations using single chain glycoprotein hormone analogs in which, the β‐and α‐subunits are linked, implied that heterodimeric‐like quaternary configuration is not a prerequisite for receptor/signal transduction. To study the function and signal transduction of tethered rec‐eCG, a single chain eCG molecule was constructed and rec‐eCG protein was produced. Molecular mass of the single chain is about 45 kDa. All mice were ovulated by tethered rec‐eCG treatment. The dual activity of tethered rec‐eCG was determined in receptor cell lines of nonequid species; in fact, this dual activity was proven in species other than horse. Tethered rec‐eCG in equids does not bind to FSH receptors, suggesting that eCG is primarily an LH‐like hormone in the horse. Taken together, these data suggest that tethered rec‐eCG has dual activity in nonequid species in vitro. However, it has only LH‐like activity in equid species in vitro.
        4,000원
        954.
        2009.10 구독 인증기관·개인회원 무료
        The Classical Swine Fever Virus (CSFV) is a member of the Pestivirus genus of the Flaviviridae. The genome of CSFV is a positive single-stranded RNA molecule 12.3 kb and contains a single large open reading frame (ORF). The polyprotein composed of eight nonstructural and four structural proteins (nucleocapsid protein C and three envelope glycoprotein E0, E1 and E2). E2, the most immunogenic of the CSFV glycoproteins, induces a protective immune response in swine. To determine the characteristics of the CSFV, LOM strain, we investigated the nucleotide sequence of the glycoprotein E0, E1 and E2. Comparison of the LOM with the other strains revealed nucleotide sequence identity ranging from 97 to 98%. Expression of the glycoprotein E2 was identified by SDS-PAGE and Western blot analysis using anti-CSFV E2 monoclonal antibodies in Sf21 cells. The expression levels of glycoprotein E2 were observed from day 3 and 5 days maximum. In addition, its expression efficiency by media and cell line was investigated. The result showed that High-Five cells and Grace’s insect media for Sf21 were the best conditions for the expression of the glycoprotein E2.
        955.
        2009.10 구독 인증기관·개인회원 무료
        Entomopathogenic fungi were isolated directly from a cadaver of adult M. saltuarius (infected with white fungi) supporting fungal sporulation, to develop biological control of pine wilt disease vector, M. saltuarius which was the most abundant in the middle to northern part of Korea and caused enormous damage to native pine tree in Korea, Japan and other regions of Asia. Pathogenicity of each fungus was tested using oak longicorn beetle, Moechotypa diphysis, as substitutive insect. As the result, only one of them showed pathogenic to adults of M. diphysis, with up to 100% mortality within 13 days of inoculation. Selected fungus was named as MsW1 and identified by Beauveria bassiana using microscopic examination, B. bassiana-specific PCR primers and genetic sequencing of the ITS region analysis. Pathogenicity test were conducted with various concentration of conidial suspensions of this isolate on M. saltuarius (3rd instar larvae and adults). Mortality rates varied from 57.1% to 100.0% and from 16.7% to 100.0% of M. saltuarius (3rd instar larvae and adults), respectively at 30 days. This is the first report of natural infection of M. saltuarius by B. bassiana.
        956.
        2009.10 구독 인증기관·개인회원 무료
        In agricultural fields, the entomopathogenic fungal species have been investigated for their potential as the biological control agents due to their role of natural enemies for insects. Until recent times, most of the studies for these fungi have been based on isolation from insect cadaver or soil. However, these methods, especially isolation from soil, might cause a problem involving differential isolation of the each entomopathogenic fungi. The purpose of this study is to determine the optimal isolation medium for entomopathogenic fungi using dodine, chitin, and skim milk. The growth rates of entomopathogenic fungi and non-entomopathogenic fungi were compared on dodine agar medium. The medium for this experiment was modified Veen semiselective medium which consisted of based on SDA (Sabouraund Dextrose Agar), 100 mg/ml for chloramphenicol, 50 mg/ml for streptomycin and adjusted dodine to 40, 50, 70 and 100 mg/ml. As a result, optimal concentration of dodine for isolation of entomopathogenic fungi was 50 mg/ml and 168 positive entomopathogenic fungi were isolated in 470 soil samples and 11 cadavers of insect. In addition, the isolates had significantly greater chitinase and protease activity than non-entomopathogenic fungi. The isolation method described represents a valuable tool for rapid and simple isolation of entomopathogenic fungi. These positive entomopathogenic fungi may have potential against variety pests in agriculture.
        957.
        2009.10 구독 인증기관·개인회원 무료
        The potato tuber moth (PTM, Phthorimaea operculella (Zeller)) is a serious pest of potato (Solanum tuberosum L.) plants in the field in regions with warm temperate to tropical climates, and of tubers stored under ambient temperatures post-harvest. Although PTM can be a minor to serious pest depending on the area and year, this pest is getting more and more serious to potato fields in Korea according to accidental surveys. Son (1979) represented 12.5℃ of average annual temperature as northern limit of distribution where corresponding to Youngdeog, Dalseong, Boseong and Jindo regions. Soon after, Choi and Park (1980) reported that the northern limit of PTM distribution coincided with -8℃ isotherm for average annual minimum temperature of January. In recent years, concerns on PTM occurrence and damage to potato are increasing due to climate change resulted in global warming. We carried out an extensive survey of PTM distribution using sex pheromone traps at 24 sites across the nation in 2009. As a result, we confirmed that the northern limit of PTM distribution climbed to southern Gyeonggi and middle Gangwon regions from Gyeongbuk and Chungbuk regions indicated by Choi and Park (1980). Hereafter, we are trying to investigate why drastic going northward of PTM happened in Korea. Here is one presumption that a sudden rise in average temperature has occurred during 30 years, from 6.34℃ in 1973 to 7.62℃ in 2007, especially around Daegwallyeong area where is a typical highland with 800 m high.
        958.
        2009.10 구독 인증기관·개인회원 무료
        Major fruit moths in commercial apple orchards are known as Carposina sasakii and Grapholita molesta. In addition, recently G. molesta is dominant species compared with C. sasakii in apple orcahrds. In case of Japan, the fruit damage occurred a lot unexpectedly in apple orchards of the northern Nagano during the harvesting season in 2004. As the result of identifying after emerging the larvae collected from the damaged fruit, Grapholita dimorpha was found out. The morphology of Grapholita dimorpha are almost similar to that of Grapholita molesta, and the shape of the damaged fruits was too similar to distinguish them. We installed sex pheromone traps of Grapholita dimorpha in apple orchards to check if there were Grapholita dimorpha in Korean apple orchards and to survey seasonal occurrence. As a result of survey by installing sex pheromone traps of G. dimorpha at one apple orchard in Uiseong-Gun and Gunwi-Gun area respectively, we could find high population density of G. dimorpha in sex pheromone traps. The peak of the first generation of G. dimorpha was dated in early May. The first generation occurrence of G. molesta in sex pheromone traps was lower than that of Grapholita molesta. However, it had higher occurrence of sex pheromone traps than G. molesta since it increased after mid and late July. Also, as a result of identifying in G. molesta traps, there were 673 G. molesta and 8 G. dimorpha. As a result of survey of 1,102 G. dimorpha in its sex pheromone traps, there were 1,099 G. dimorphaand 3 G. molesta.
        959.
        2009.10 구독 인증기관·개인회원 무료
        Up to now only 17 coleopteran mitogenomes have been fully or near fully sequenced, but this chart does not include any complete mitogenome sequence of the coleopteran infraorder Scarabaeiformia, in which the monotypic Scarabaeoidea is included. In this study, we firstly present three scarabaeoid mitogenomes, two of which are completed and one is near completed. The complete nucleotide sequences of the white-spotted flower chafer, Protaetia brevitarsis (Scarabaeiformia: Scarabaeidae), was determined to be 20,319 bp, the two-spotted stag beetle, Metopodontus blanchardi (Scarabaeiformia: Lucanidae), was 21,678 bp, and the incomplete garden chafer, Polyphylla laticollis (Scarabaeiformia: Scarabaeidae), which lacks sequence information from whole A+T-rich region and a partial srRNA gene was 14,473 bp. Thus, the two complete mitogenome sequences are longest among the completely sequenced insect mitogenomes, followed by the 19,517 bp-long dipteran Drosophila melanogaster. Phylogenetic analysis using the concatenated 13 amino acid sequences of PCGs of the 13 coleopteran insects including three newly sequenced scarabaeoid successfully recovered a monophyly of suborder Polyphaga, a monophyly of infraorder Cucujiformia, a monophyly of infraorder Elateriformia, and also a monophyly of infraorder Scarabaeiformia within Polyphga. However, the Scarabaeiformia represented by three newly sequenced species was unexpectedly placed as a sister group to the Cucujiformia, instead of the placement to the sister to the Cucujiformia and Elateriformia group.
        960.
        2009.10 구독 인증기관·개인회원 무료
        Eumenis autonoe, a member of the lepidopteran family Nymphalidae (superfamily Papilionoidea) is an endangered species, and is found only on one isolated remote island, Jeju in South Korea, on Halla Mt., at altitudes higher than 1,400 meters. In this study, we report the complete mitochondrial genome (mitogenome) of E. autonoe. The 15,489-bp long E. autonoe genome evidenced the typical gene content found in animal mitogenomes, and harbors the gene arrangement identical to all other sequenced lepidopteran insects, which differs from the most common type found in insects, due to the movement of tRNAMet to a position 5’-upstream of tRNAIle. As has been observed in many other lepidopteran insects, no typical ATN codon for the COI gene is available. Thus, we also designated the CGA (arginine) found at the beginning of the COI gene as a lepidopteran COI starter, in accordance with previous suggestions. The 678-bp long A+T-rich region, which is second longest in sequenced lepidopteran insects, harbors 10 identical 27-bp long tandem repeats plus one 13-bp long incomplete final repeat. Such a repeat sequence has been, thus far, only rarely detected in lepidopteran mitogenomes. The E. autonoe A+T-rich region harbors a poly-T stretch of 19 bp and a conserved ATAGA motif located at the end of the region, which have been suggested to function as structural signals for minor-strand mtDNA replication.