• 디지털융복합연구
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• 제19권7호
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• pp.175-188
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• 2021

수익성을 앞세운 과열 경쟁으로 인한 경영 여건의 악화에도 불구하고 중국의 치과 수는 매년 증대되고 있다. 이에 본 연구는 상하이 지역의 치과 서비스품질이 만족도에 미치는 영향과 지각된 가치의 매개효과를 검증하는 데에 목적을 두고 있다. 이를 위해 중국 상하이 지역 치과 환자를 대상으로 전자 설문을 실시하고 유효표본 345부를 회수하여 연구의 목적에 맞게 SPSS 26.0을 이용하였다. 결과를 요약하면 다음과 같다. 첫째, 서비스품질의 모든 요인은 만족도와 지각된 가치에 긍정적 영향을 주었다. 둘째, 지각된 가치는 만족도에 긍정적인 영향을 미치는 것으로 나타났다. 셋째, 지각된 가치는 서비스품질과 만족도 간의 관계에서 부분 매개효과를 보이는 것으로 분석되었으며, 중국과 한국의 치과 사용자들에 대한 연구는 거의 유사한 결과를 나타내고 있다. 따라서 치과의 고품질 서비스가 경영능력 제고에 필수적이라는 것을 확인할 수 있다.

• Asian-Australasian Journal of Animal Sciences
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• 제22권3호
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• pp.319-327
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• 2009

Follicular fluid meiosis-activating sterol (FF-MAS) has been suggested as a positive factor which could improve the oocyte quality and subsequent embryo development after in vitro fertilization. However, FF-MAS is a highly lipophilic substance and is hard to detect in studying the relationship between MAS and quality of oocyte maturation. The present study focused on the expression of lanosterol 14${\alpha}$-demethylase (LDM), a key enzyme that converts lanosterol to FF-MAS, on mouse oocyte maturation and its potency on development. LDM expression was strong in gonadotropin-primed germinal vesicle stage oocytes, weak after germinal vesicle breakdown (GVBD), and then strong in MII stage oocytes. The LDM-specific inhibitor azalanstat significantly inhibited oocyte fertilization (from 79.4% to 68.3%, p<0.05). Also, azalanstat (5 to 50 ${\mu}M$) decreased the percentage of blastocyst development dosedependently (from 78.7% to 23.4%, p<0.05). The specific inhibition of sterol ${\Delta}14$-reductase and ${\Delta}7$-reductase by AY9944 accumulates FF-MAS and could increase blastocyst development rates. Additionally, in the AY9944 group, the rate of inner cell mass (ICM)/ total cells was similar to that of in vivo development, but the rate was significantly decreased in azalanstat treatment. In conclusion, LDM, the key enzyme of FF-MAS production, may play an important role in fertilization and early development of the mouse embryo, especially in vitro.

• 대한지리학회지
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• 제45권3호
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• pp.414-429
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• 2010

이어도 영유권 분쟁에 있어서 인접국인 중국의 부당한 주장에 대해 한국으로서 정합적인 논리를 개발 설득함으로써 문제를 평화적으로 해결하는 데 본 연구의 목적이 있다. 이를 위해 먼저 이어도의 자연경관의 특징과 형성과정을 자연지리학으로 정리하고. 이를 토대로 중국의 견강부회적인 주장에 대해 구체적이고 객관적인 반박 논리를 개발한다. 지질 지형과 관련한 지질사를 봤을 때 이어도가 제주도의 부속암초라는 사실이 그대로 드러나고 있으며, 중국이 주장하는 인문학적 증거, 즉 $\ll$산해경$\gg$에 대한 중국측의 해석은 우려할 정도로 왜곡되고 있다. 뿐만 아니라 중국측이 주장하는 논리가 북해대륙붕사건에서 독일의 논리를 도입하고 있으나 중국은 대향국간과 인접국간의 경계획정을 혼동하고 있어 정합성이 전혀 없다고 해도 과언이 아니다. 본 연구 결과는 강단지리학에 관심을 갖도록 할 뿐만 아니라 나아가 국민을 계도하고 관계기관이 상대국과 협상할 때 주요자료와 이론으로 활용할 수 있다.

• Asian-Australasian Journal of Animal Sciences
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• 제30권12호
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• pp.1679-1683
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• 2017

Objective: An experiment was conducted to study the association between the single nucleotide polymorphisms (SNPs) in 5'-untranslated regions (5'-UTR) of equine chorionic gonadotropin (eCG) genes and the serum eCG levels. Methods: SNPs in 5'-UTR of eCG genes were screened across 10 horse breeds, including 7 Chinese indigenous breeds and 3 imported breeds using iPLEX chemistry, and the association between the serum eCG levels of 174 pregnant Da'an mares and their serum eCG levels (determined with ELISA) was analyzed. Results: Four SNPs were identified in the 5'-UTR of the $eCG{\alpha}$ gene, and one of them was unique in the indigenous breeds. There were 2 SNPs detected at the 5' end of the $eCG{\beta}$ subunit gene, and one of them was only found in the Chinese breeds. The SNP g.39948246T>C at the 5'-UTR of $eCG{\alpha}$ was associated significantly with eCG levels of 75-day pregnant mare serum (p<0.05) in Da'an mares. Prediction analysis on binding sites of transcription factors showed that the g.39948246T>C mutation causes appearance of the specific binding site of hepatocyte nuclear factor 3 forkhead homolog 2 (HFH-2), which is a transcriptional repressor belonging to the forkhead protein family of transcription factors. Conclusion: The SNP g.39948246T>C at the 5'-UTR of $eCG{\alpha}$ is associated with eCG levels of 75-day pregnant mare serum (p<0.05).

• BMB Reports
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• 제41권9호
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• pp.664-669
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• 2008

Znf230, the mouse homologue of the human spermatogenesis-related gene, ZNF230, has been cloned by rapid amplification of cDNA ends (RACE). This gene is expressed predominantly in testis, but its expression in different testicular cells and spermatogenic stages has not been previously analyzed in detail. In the present study, the cellular localization of the Znf230 protein in mouse testis and epididymal spermatozoa was determined by RT-PCR, immunoblotting, immunohistochemistry and immunofluorescence. It is primarily expressed in the nuclei of spermatogonia and subsequently in the acrosome system and the entire tail of developing spermatids and spermatozoa. The results indicate that Znf230 may play an important role in mouse spermatogenesis, including spermatogenic cell proliferation and sperm maturation, as well as motility and fertilization.

• 디지털융복합연구
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• 제15권9호
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• pp.189-200
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• 2017

본 연구는 중국과 일대일로 사업에 참여하고 있는 국가들의 상호간 무역 의존성을 분석하여 특징과 시사점을 제시하는 것을 연구의 목적으로 하였다. 연구방법으로는 국제통화기금(IMF)과 중국 국가통계국(NBS)에서 각각 200여 국가에 대한 수출입 및 GDP자료를 수집하고 90년대부터 2015년까지 추이를 살폈으며, 무역의존도에서 단방향이 아닌 양방향의 상호 의존성을 분석했다. 개별 국가 GDP에서 중국 무역의존도가 15%이상으로 매우 높은 국가들이 34개국 이상이며, 중국대외 무역에서 미국 및 일본에 대한 수출입 비중이 낮아지고, 중동, 남아프리카, 남미, 동남아시아 등 지역에 대한 비중이 높아지고 있다. 또한, 중국은 일대일로에 참여하는 국가그룹에 대해서 90년대부터 현재까지 약 60% 내외의 수출입비중과 2~30%수준의 무역의존도를 보이고 있다. 일대일로 사업이 본격화되고 있는 시점에서 본 연구는 일대일로 사업 환경 및 중국을 둘러싼 국가들의 무역 관계에 대한 이해, 대응방안 수립 등의 관점에서 의의를 가질 것이며, 일대일로 사업이 진행됨에 따라 주요 국가와 중국의 상호 간 무역 의존성은 더욱 심화될 것으로 예상된다.

• 한국기후변화학회지
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• 제9권4호
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• pp.471-485
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• 2018

The Republic of Korea (ROK) has made many efforts to reduce greenhouse gases through a legal framework, making obligations to reach domestic and overseas targets via the Paris Convention in 2015. China recently launched a nation-wide emission trading system (ETS) and has considered extending this ETS to include the ROK. This study examines the possibility of linking the ETS between ROK and China by considering the institutional design elements of the ETS. Additionally, this study provides policy implications to reach Korea's overseas reduction target. For the research methodology, the design elements of both the ROK and China policies were analyzed by categorizing their standard design elements based on the International Carbon Action Partnership. This paper focuses on four main barriers (cap type, borrowing, offset and price ceiling) based on their environmental benefits and analyzes the challenges to combining the design elements between the ROK and China systems. The two ETS commonly share the same cap types, and there is similar institutional progress regarding the offset and price ceiling. In addition to this, note that China has a borrowing system that is opposite to the borrowing system in ROK. According to these findings, there are major challenges to linking the ROK and China systems due to differences in the major design elements. Thus, it is necessary to modify the Korean domestic borrowing system and understand the Chinese institutional processes related to environmental negotiation to achieve further cooperation.

• Nuclear Engineering and Technology
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• 제56권1호
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• pp.160-166
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• 2024

The inversion of radiation field distribution is of great significance in the decommissioning sites of nuclear facilities. However, the radiation fields often contain multiple mixtures of radionuclides, making the inversion extremely difficult and posing a huge challenge. Many radiation field reconstruction methods, such as Kriging algorithm and neural network, can not solve this problem perfectly. To address this issue, this paper proposes an optimized inverse distance weighted (IDW) interpolation algorithm for reconstructing the gamma radiation field. The algorithm corrects the difference between the experimental and simulated scenarios, and the data is preprocessed with normalization to improve accuracy. The experiment involves setting up gamma radiation fields of three Co-60 radioactive sources and verifying them by using the optimized IDW algorithm. The results show that the mean absolute percentage error (MAPE) of the reconstruction result obtained by using the optimized IDW algorithm is 16.0%, which is significantly better than the results obtained by using the Kriging method. Importantly, the optimized IDW algorithm is suitable for radiation scenarios with multiple radioactive sources, providing an effective method for obtaining radiation field distribution in nuclear facility decommissioning engineering.

• Asian Pacific Journal of Cancer Prevention
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• 제15권22호
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• pp.9859-9863
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• 2014

Genetic epidemiological studies have shown that genetic susceptibility to esophageal cancer (EC) is an important cause of its high incidence within families in some areas of China. The purpose of this study was to obtain evidence of a genetic basis of EC in Xin-an and Xin-xiang counties in China. Familial aggregation and complex segregation analyses were performed of 79 EC families in these counties. The heritability of EC was examined using Falconer's method and complex segregation analysis was conducted with the SEGREG program in Statistical Analysis for Genetic Epidemiology (SAGE version 5.3.1). The results showed that the distribution of EC in families did not fit well into a binomial distribution. The heritability of EC among first-degree and second-degree relatives was $67.0{\pm}7.31%$ and $43.1%{\pm}9.80%$, respectively, and the summing up powered heritability was $53.2{\pm}6.74%$. The segregation ratio was 0.045. Complex segregation analysis showed that the genetic model of EC was additive. The current results provide evidence for an inherited propensity to EC in certain high-risk groups in China, and support efforts to identify the genes that confer susceptibility to this disease.

• 대한본초학회지
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• 제35권2호
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• pp.15-29
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• 2020

Objectives : This study aimed to review the change in the origin of Sokdan(續斷) by diachronically analyzing literature data from Korea and China. Methods : Literature records describing the origin(synonyms, location of production, description) of Sokdan were collected, records were divided into periods. The main contents were included in the results, and original texts were edited and summarized in the table. Results : Sokdan, whose leaves resemble Jeoma(苧麻)(SJ), was first recorded in 《Xinxiubencao(新修本草)》, and described in detail in 《Bencaotujing(本草圖經)》 during the Tang and Song dynasties in China. In modern times, SJ was assumed to be genus Phlomoides or Lamium; however, records of the plant have decreased. Finally, SJ was not included in the 《Pharmacopoeia of the People's Republic of China》 as Sokdan. However, 《Diannanbencao(滇南本草)》, 《Diannanbencaotushuo(滇南本草圖說)》, 《Zhiwumingshitukao(植物名實圖考)》 described Sokdan of dian(滇). It was assumed genus Dipsacus. From the 1950s onwards, Sokdan is described in the literature as a member of the genus Dipsacus. In korea, SJ was recorded in 《Hyangyakjipseongbang(鄕藥集成方)》 and 《Dongeuibogam(東醫寶鑑)》 during the Joseon dynasty. In modern times, the genera Phlomoides and Lamium were mostly recorded as the origin of Sokdan. Conclusions : Several species have been described as Sokdan over the years in China, but since the 1950s, the genus Dipsacus was noted as the origin of Sokdan. In Korea, SJ was used in the past, thus Sokdan was recorded as P. umbrosa in 《The Korean Herbal Pharmacopoeia(KHP)·1985》. However, 《KHP·1998》 referred to P. umbrosa as Hansokdan and D. asperoides as Sokdan.