http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Taxonomic Review of the Subfamily Pristocerinae (Hymenoptera: Bethylidae) from Korea
Jongok Lim,Hyunjeong Kwon,Jongwook Lee,Seunghwan Lee 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.05
Six species of the Pristocerinae are recognized from Korea, including two new species (Pseudisobrachium sp. nov., Parascleroderma sp. nov.), and four species new to Korea (Acrepyris minutus (Yasumatsu 1955), Apenesia elegans Terayama 1999, A. okinawensis Terayama 1999, and Pristocera formosana Miwa et Sonan 1935). The illustrations of diagnostic characters are presented with a key to species of Korean Pristocerinae is provided.
Three new records of the subfamily Epyrinae Hymenoptera: Bethylidae) from Korea
Jongok LIM,Hyunjeong KWON,Jongwook LEE,Sanghyun KOH,Seunghwan LEE 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
Three species, Allobethylus tomoae Terayama, Cephalonomia tarsalis (Ashmead), and Laelius yamatonis Terayama of the subfamily Epyrinae are recorded for the first time in Korea. Both sexes of A. tomoae Terayama, C. tarsalis (Ashmead) and female of L. yamatonis Terayama are briefly described with diagnostic morphological illustrations for each species based on the Korean specimens. Male of the genus Allobethylus is discovered for the first time from the word.
Dermal Toxicity of Flake-Like 관-Alumina Pigments.
Kwon, TaeWoo,Seo, HyunJeong,Jang, Seongwan,Lee, Sang-Geun,Park, Sungkyun,Park, Kang Hyun,Youn, BuHyun American Scientific Publishers 2015 Journal of Nanoscience and Nanotechnology Vol.15 No.2
<P>Aluminum is one of the most widely used nonferrous metals and an important industrial material, especially for automotive coatings. However, potential toxicity caused by aluminum in humans limits the used of this metal. 관-alumina is the most stable form of aluminum in various phases. Although the results of studies evaluating the dermal toxicity of 관-alumina remained unclear, this compound can still be used as a pigment in cosmetics for humans. In the current study, we further evaluated the dermal cytotoxic effects of 관-alumina on human skin cells and an in vivo mouse model. We also measured the in vitro penetration profile of flake-like 관-alumina in porcine skin and assessed the degree of cellular metabolic disorders. Our findings demonstrated that treatment with flake-like 관-alumina did not significantly affect cell viability up to 24 h. This compound was found to have a non-penetration profile based on a Franz modified diffusion cell assay. In addition, flake-like 관-alumina was not found to induce dermal inflammation as assessed by histology of epidermal architecture, hyperplasia, and the expression of Interleukin-1관 and Cyclooxygenase-2. Results of the cellular metabolic disorder assay indicated that flake-like 관-alumina does not exert a direct effect on human skin cells. Taken together, our findings provided not only evidence that flake-like 관-alumina may serve as a pearlescent pigment in cosmetics but also experimental basis utilizing 관-alumina for human application. Our results also obviously provide new insight of the further toxicity study to aluminum based nanoparticles for skin.</P>
( Hyunjeong Kim ),( Sangwook Kang ),( Sungho Kwon ) 국민체육진흥공단 한국스포츠정책과학원 2019 International Journal of Applied Sports Sciences Vol.31 No.1
The purpose of this study was to explore the structural relationship among the perception of athlete Julsil, self-regulation, and flow of adolescent athletes. A total of 425 middle school and high school athletes completed a survey. Structural equation modeling analysis was conducted to verify the research model. The result of verifying the structural relationship among athlete Julsil, self-regulation and flow indicates that self-regulation was found to mediate the relationship between athlete Julsil and flow. In addition, measurement invariance was verified across gender and school that can be applied equally to various groups. Through these results, it was verified that athlete Julsil is an important psychological factor for adolescent athletes. In addition, they need to have a firm mental attitude by themselves and to move them to action for peak performance.
( Hyunjeong Cho ),( Soon Kil Kwon ),( Seung Woo Lee ),( Yu Mi Yang ),( Hye Young Kim ),( Sun Moon Kim ),( Tae-young Heo ),( Chang Hwan Seong ),( Kyeong Rok Kim ) 대한전해질학회 2023 Electrolytes & Blood Pressure Vol.21 No.2
Background: Most hemodialysis (HD) patients suffer from hypertension and have a heightened cardiovascular risk. While blood pressure (BP) control is essential to end-stage kidney disease (ESKD) patients, overly stringent control can lead to intradialytic hypotension (IDH). This study aimed to examine BP variations during and after HD to determine whether these variations correlate with IDH risk. Methods: BP measurements during dialysis were taken from 28 ESKD patients, and ambulatory BP monitoring was applied post-dialysis. Laboratory parameters and risk factors, including diabetes, coronary disease, and LV mass index, were compared between IDH and non-IDH groups using an independent t-test. Results: Of the 28 patients with an average age of 57.4 years, 16 (57.1%) had diabetes, 5 (17.9%) had coronary artery disease, and 1 (3.6%) had cerebrovascular disease. The mean systolic blood pressure (SBP) during and post-HD was 142.26 mmHg and 156.05mmHg, respectively (p=0.0003). Similarly, the mean diastolic blood pressure (DBP) also demonstrated a significant increase, from 74.59mmHg during HD to 86.82mmHg post-HD (p<0.0001). Patients with IDH exhibited a more substantial SBP difference (delta SBP, 36.38 vs. 15.07 mmHg, p=0.0033; age-adjusted OR=1.58, p=0.0168) and a lower post-dialysis BUN level (12.75 vs. 18.77mg/dL, p=0.0015; age-adjusted OR=0.76, p=0.0242). No significant variations were observed in daytime and nocturnal BP between the IDH and non-IDH groups. Conclusion: Hemodialysis patients exhibited a marked increase in post-dialysis BP and lacked a nocturnal BP dip, suggesting augmented cardiovascular risks. This highlights the importance of more stringent BP control after hemodialysis.
Kwon Soonhon,Chun Hyunjeong,Mah Soukil The Korean Fiber Society 2004 Fibers and polymers Vol.5 No.4
Living nature of photoinduced cationic polymerization of isobutyl vinyl ether (IBVE) in the presence of various combinations of diphenyliodonium halide (DPIX), a photocationic initiator and zinc halide $(ZnX_2)$ in methylene chloride has been investigated. Attainment of $100\%$ conversion and a linear relationship between $\%$conversion and number average molar mass of the resulting polymer, strongly suggests the living nature of this system. Livingness of the polymerization system was observed irrespective to the type of halide anion of the initiator and zinc salts unless the reaction temperature is not higher than $-30^{\circ}C$. The rate of polymerization decreases in the order of iodide > bromide > chloride when halide salt of DPIX and $ZnX_2$ are used. It is postulated that the cationic initiation is started by the insertion of weakly basic monomer in to the activated C-X terminal of the monomer adduct which is a reaction product of monomer and HX, a photolytic product of DPIX, formed in situ during the photo-irradiation process. It was concluded that polymerization is initiated by the insertion of weakly basic monomer into activated C- X terminal of monomer adduct due to the pulling action of$ZnX_2$, which successively producing a new polarized C-X terminal for the propagation in cationic nature. This led us to a conclusion that the living nature of this cationic polymerization is ascribable to the polarized C-X growing terminal, which is stable enough to depress the processes of chain transfer or termination process.