Effect of Prior Microstructures on Cementite Dissolution Behavior During Subcritical Annealing of High Carbon Steels

Xiao‑Yu Zhao,Xian‑Ming Zhao,Chun‑Yu Dong,Yang Yang,Huai‑Bin Han 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.6

The variation of the morphology and distribution of cementite particles in different prior structures with spheroidizingannealing process has been proceeded in this paper. It is found that the dissolution and coarsening progresses of variousinitial structures in spheroidizing annealing process are quite asynchronous due to the different interlamellar spacing. Thedissolution rate of degenerated pearlite (D-P) with finer interlamellar spacing is faster. The granular cementite in the spheroidizedmicrostructure is fine, uniform and dense. The mean diameter of spherical cementite is refined to 233 nm. However,the initial structure of degenerated pearlite (D-P) is highly sensitive to the austenitization temperature. The cementite iseasy to be coarsened under high austenitizing temperature. The coarsening is accompanied by the gradual increase of theCr content in the cementite, which increases the stability of the cementite. Therefore, the optimal austenitizing temperaturefor degenerated pearlite (D-P) is suggested to be 770 °C.

중국 한족(汉族) 복식에 나타난 수묵화(⽔墨画)의 표현특성에 대한 연구 -<영影>영화 자료 중심으로-

순샤오동 ( Sun Xiao Dong ),한정민 ( Han Jung Min ),강혜승 ( Kang Hae Seung ) 한국기초조형학회 2020 기초조형학연구 Vol.21 No.6

중국은 유구한 역사를 지닌 주로 한족으로 구성된 다민족 국가이며, 한족은 전 세계 범위에서 인수가 가장 많은 민족이다. 영화 <영>은 2018년 중국에서 개봉되었고, 등장인물의 한족 복식이 수묵화의 형식으로 표현되어 중국의 전통문화와 복식의 상관관계를 잘 보여준다. 본 연구의 목적은 영화의 주요 등장인물 5명의 한족 복식을 형태, 색채, 문양을 중심으로 분석하고, 이들 복식에 나타난 수묵화의 표현특성을 분석하는 것이다. 연구 방법은 한족 복식, 중국 수묵화, 그리고 한족 복식에 대한 문헌연구를 하며, 연구 범위는 영화 속 등장인물 총 5명의 복식으로 하여 형태, 색채, 문양이 명확하게 표현된 25점의 이미지를 분석 대상으로 하였다. 본 연구의 결과는 다음과 같다. 첫째, 영화에 나타난 남자 인물의 복식은 전통 한족 복식과 일치하게 나타났으며, 여자 인물의 복식은 전통 한족 복식과 차이점이 있었다. 주요한 차이점은 여자 복식의 깃에 나타났으며, 영화에서는 전통복식에 없는 V령이 착용되어 여자 인물의 강직한 성격을 부각시켰다. 둘째, 영화의 한족 복식에 나타난 수목화의 표현특성은 추상미, 대조미, 의경의 내적 의미를 도출할 수 있었다. 추상미는 수묵화의 문양에서 나타났으며, 대조미는 색채 표현에서, 그리고 의경의 내적의미는 복식 형태와 문양에서 나타났다. 영화 영에서는 한족 복식의 형태, 색채, 문양을 통해 등장인물 개개인의 성격과 심리를 표현하였음을 알 수 있었으며, 수묵화를 활용한 복식디자인을 통해 중국의 전통미를 부각시켰다. 본 연구는 중국 전통 한족 복식 및 수묵화 특성의 이해를 높이고, 중국 전통문화와 복식 디자인 연구에 대한 참고자료가 될 수 있을 것으로 기대한다. China has a long history and is composed of multi-ethnic groups dominated by Han nationality. Since the Han nationality is known with the largest population in the world, the traditional culture of China has an important position in world cultures simultaneously. There was a film named < Shadow > released in China, 2018, which received authoritative awards in multiple fields including Visual effect, Fine art, Style design, and others. In this film, the characteristics of Chinese Ink Wash Painting can be seen in the pictures of all the lenses as well as characters’ costumes of Han nationality(Han Fu), that connected Chinese traditional cultures with the concept of Fashion design. Thence, we have analyzed on shape, color, and pattern of the Han Fu of five main characters and further discussed the performance characteristics of Chinese brush panting appearing in these costumes. The results of the analysis were shown below. Firstly, by comparison with historical records, we have found the costumes of male characters consistent with the real Chinese classical Han fu, while the situation of females is different. The main difference was from the collars, the V-collar element which does not exist in traditional female Han Fu was applied boldly in this film, which inspired the audiences to understand the role. Secondly, the performance characteristics of Chinese Ink Wash Painting in Han Fu were concentrated on the beauty of abstract and contrast, further reflect the inner meaning of artistic conception. The beauty of abstract and the inner meaning of artistic conception was shown from the pattern of Chinese Ink Wash Painting, while the situation of the beauty of contrast was from colors. This study will be helpful to understand the Chinese traditional Han Fu and Chinese brush painting through the film, and it may be utilized as sources for the connection between Chinese traditional culture and modern fashion design in the future.

Genetic Screening for Mutations in the Chip Gene in Intracranial Aneurysm Patients of Chinese Han Nationality

Su, Li,Zhang, Yuan,Zhang, Chun-Yang,Zhang, An-Long,Mei, Xiao-Long,Zhao, Zhi-Jun,Han, Jian-Guo,Zhao, Li-Jun Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.3

We performed a case-control study to investigate whether SNPs of CHIP might affect the development of IA in Chinese Han nationality. We believe we are the first to have screened IA patients for mutations in the CHIP gene to determine the association with these variants. The study group comprised 224 Chinese Han nationality patients with at least one intracranial aneurysm and 238 unrelated healthy Han nationality controls. Genomic DNA was isolated from blood leukocytes. The entire coding regions of CHIP were genotyped by PCR amplification and DNA sequencing. Differences in genotype and allele frequencies between patients and controls were tested by the chi-square method. Genotype and allele frequencies of the SNP rs116166850 was demonstrated to be in Hardy-Weinberg equilibrium. No significant difference in genotype or allele frequencies between case and control groups was detected at the SNP. Our data do not support the hypothesis of a major role for the CHIP gene in IA development in the Chinese Han population.

Mechanism using Taguchi-Based Differential Evolution Algorithm to Optimize the Bicycle Industry in China

Xiao Han Liu,Seng Fat Wong 대한산업공학회 2018 Industrial Engineeering & Management Systems Vol.17 No.1

Sustainable manufacturing considers that efficiently controlling the early stages of a manufacturing system is an important issue for industry enterprise. However, the data collected at this point is usually limited due to cost and time issues, making it difficult to realize the real situation in the production process. One of the ways to solve this problem is to use a small data build prediction system, such as the various grey methods. Although the grey forecasting model has been successfully adopted in various fields and demonstrated promising results, it can still be further improved. Meanwhile, Chinese bicycles have had a tremendous effect on society. This paper thus combines Chinese bicycle industry proposes a new way to improve forecasting accuracy. The new prediction model is called Rolling-TDEGM(1, 1). The grey model contributes to forecasting the future demand, and the TDE method is applied to optimize the parameters of grey model based on the minimization of forecasting error. Also, the rolling mechanism can keep the real-time data. In this experimental study, the public dataset and a real case are used to confirm the effectiveness of the proposed model; the experiment indicates that the Rolling-TDE-GM(1, 1) can significantly improve prediction precision.

Species diversity and distribution of the genus Colpomenia (Scytosiphonaceae, Phaeophyceae) along the coast of China

Xiao-Han Song,Zi-Min Hu,Zhong-Min Sun,Stefano G. A. Draisma,Pablo Fresia,De-Lin Duan 한국조류학회I 2019 ALGAE Vol.34 No.3

The marine brown algal genus Colpomenia has a worldwide distribution, with five species reported in Korea and Japan. However, no studies to date attempted to identify the number of species and geographical distribution of Colpomenia along Chinese coast. To fill the biodiversity knowledge gap, we analyzed 63 mitochondrial cox3 and 62 mitochondrial atp6 sequences of Colpomenia specimens collected from 30 localities along the Chinese coast. Maximum likelihood and Bayesian inference trees suggest the presence of at least three Colpomenia species (i.e., C. peregrina, C. claytoniae, and C. sinuosa) in China. C. peregrina and C. claytoniae are documented for the first time. C. sinuosa was only found in the South China Sea and its distribution didn’t overlap with that of C. peregrina which was found in the Yellow-Bohai Sea and the East China Sea. C. claytoniae appears to be confined to three isolated islands in the East and the South China Sea, where it occurs in sympatry with, respectively, C. peregrina and C. sinuosa. Future study can focus on comparing ecophysiological differences of Colpomenia species in response to environmental variables and exploring possible genetic hybridization / introgression at inter-specific contact zones.

Identification and evolutionary history of the DD41D transposons in insects

Xiao-Gu Zhang,Hua-Hao Zhang,Yi-Hong Shen,Xiao-Min Xiong,Min-Jin Han 한국유전학회 2016 Genes & Genomics Vol.38 No.2

The rosa monophyletic group of transposons is a group of transposable element with characteristics of encoding a DD41D motif in the catalytic domain. However, biology and evolutionary history of this monophyletic group are still poorly understood. In this study, we report the first description for the presence of a rosa transposon in the silkworm Bombyx mori. Further analyses confirmed that this element in the silkworm genome had recently amplified and might still be capable of transposition. In addition, we present evidence, based on searches of publicly available insect genomes, that a new clade of the rosa monophyletic group was identified. Interestingly, analysis of their three dimensional structures suggested that these proteins showed highly similar protein structures with that of the Mos1 transposase. These results provided useful insights into the functionality of these transposases and their structural and functional deviations from other transposases in the Tc1/mariner superfamily. Meanwhile, sequence and phylogenetic analysis confirmed that DD41D and maT elements might represent another independent large group of the Tc1/mariner superfamily. Importantly, the result of the comparison of terminal inverted repeats (TIRs) validated that DD41D and maT elements almost had identical consensus terminal sequences (50-CAGGGTGNS NCA-30), implying they might have similar cleavage sites or patterns during the process of their transposition. In a word, this study will enrich and expand our knowledge of the Tc1/mariner superfamily.

Induction of Apoptosis by IGFBP3 Overexpression in Hepatocellular Carcinoma Cells

Han, Jian-Jun,Xue, De-Wen,Han, Qiu-Rong,Liang, Xiao-Hong,Xie, Li,Li, Sheng,Wu, Hui-Yong,Song, Bao Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.23

Background: The insulin-like growth factor (IGF) system comprises a group of proteins that play key roles in regulating cell growth, differentiation, and apoptosis in a variety of cellular systems. The aim of this study was to investigate the role of insulin-like growth factor binding protein 3 (IGFBP3) in hepatocellular carcinoma. Materials and Methods: Expression of IGF2, IGFBP3, and PTEN was analyzed by qRT-PCR. Lentivirus vectors were used to overexpress IGFBP3 in hepatocellular carcinoma cell (HCC) lines. The effect of IGFBP3 on proliferation was investigated by MTT and colony formation assays. Results: Expression of IGF2, IGFBP3, and PTEN in several HCC cell lines was lower than in normal cell lines. After 5-aza-2'-deoxycytidine/trichostatin A treatment, significant demethylation of the promoter region of IGFBP3 was observed in HCC cells. Overexpression of IGFBP3 induced apoptosis and reduced colony formation in HUH7 cells. Conclusions: Expression of IGF2, IGFBP3, and PTEN in several HCC cell lines was lower than in normal cell lines. After 5-aza-2'-deoxycytidine/trichostatin A treatment, significant demethylation of the promoter region of IGFBP3 was observed in HCC cells. Overexpression of IGFBP3 induced apoptosis and reduced colony formation in HUH7 cells.

Intradural Transpetrosectomy for Petrous Apex Meningiomas

Han, Shuo,Zhang, Xiao-Hua,Han, Dong-Hua,Jin, Yi-Chao The Korean Neurosurgical Society 2019 Journal of Korean neurosurgical society Vol.62 No.5

Objective : This study aimed to assess the surgical results of the intradural transpetrosectomy for petrous apex meningiomas (PAMs). In addition, we describe the methods and techniques used to expose and manage superior petrous vein and greater superficial petrosal nerve. Methods : The authors conducted a retrospective study of 16 patients with PAMs operated by the senior author via the intradural transpetrosectomy between February 2012 to May 2017. We reviewed patient data regarding the general characteristics, surgical technique and surgery-related outcomes and adopted a combined follow-up strategy of clinic and telephone contacts to evaluate postoperative complications. Results : Simpson grade I and II resection was performed in 10 out of 16 cases (62.5%), and grade III resection were reported in the remaining six cases (37.5%) with no resultant mortality. The mean Karnofsky Performance Status score was 85.6 preoperatively and improved to 91.9 postoperatively, with a mean follow-up period of 34.4 months (range, 6-66 months). Tumor recurrence was found in two patients and they underwent the second surgical operation. Conclusion : PAMs could be completely resected by the intradural transpetrosectomy with an improved survival rate and postoperative life quality. Superior petrous vein and greater superficial petrosal nerve should be managed properly in avoidance of postoperative complications. Finally, most meningioma inside cavernous sinus or adhered to brainstem could be totally removed without postoperative complications.

中国现代文学中的“慰安妇”形象研究

??(Han, Xiao) 중국문화연구학회 2019 중국문화연구 Vol.0 No.44

There is a special female image in contemporary literature of China, that is the “comfort women” image from China, Japan and Korea. This paper firstly made an in-depth exploration and analysis of the images of “comfort women” in contemporary literature of China, and then classified them according to nationality, specifically analyzing the images of “comfort women” in China, Japan and Korea. To be specific, when creating the image of Chinese “comfort women”, Chinese writers not only expose the crimes of the aggressors from the standpoint of nationalism and then call on the people to fight for the end of the war, but also explore the oppression of women by gender and patriarchy system to a certain extent. In shaping the “comfort women” from Japan, the writers are based mainly on anti-war stance, with the Japanese people apart from the war initiators-the Japanese warlords and plutocrat, accuse the warlord of their press on women in Japan and call for the world forces that can be united together against Japanese imperialism. When looking at the “comfort women” from Korea, a colony of Japan, they mainly cast a humanitarian view. On the one hand, they expose and strongly condemn the crimes of Japanese imperialism; on the other hand, they also warn the Chinese people to wake up, so as to call for the unity of weak and small ethnic groups. These works project different consciousness and embody different creative purposes. They can not only help us to document history and expose the evil of militarism, but also provide us with some perspective and practical significance to re-examine this issue today.

mRNA Expression and Clinical Significance of ERCC1, BRCA1, RRM1, TYMS and TUBB3 in Postoperative Patients with Non-Small Cell Lung Cancer

Han, Yi,Wang, Xiao-Bin,Xiao, Ning,Liu, Zhi-Dong Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5

Background: To explore mRNA expression and clinical significance of ERCC1, BRCA1, RRM1, TYMS and TUBB3 genes in tumor tissue of postoperative patients with non-small cell lung cancer (NSCLC). Materials and Methods: Sixty NSCLC patients undergoing radical operation in our hospital from Nov., 2011 to Jun., 2012 were selected. Plasmid standards of ERCC1, BRCA1, RRM1, TYMS and TUBB3 were established and standard curves were prepared by SYBR fluorescent real-time quantitative PCR analysis. Samples from tumor centers were taken to detect mRNA expression of ERCC1, BRCA1, RRM1, TYMS and TUBB3 genes in cancerous tissue during operation. The total mRNA expression quantities were compared according to different clinical characteristics. Results: The total expression quantities of 5 genotypes from high to low were ERCC1>RRM1>TUBB3>TYMS>BRCA1 in turn. By pairwise comparisons, other differences showed statistical significance (p<0.05 or p<0.01) except for TYMS and TUBB3 (p>0.05); the low expression rates from high to low were ERCC1>TYMS>TUBB3>TUBB3>RRM1>BRCA1 in turn. The expression quantities of BRCA1, RRM1 and TYMS in males, smokers and patients without adenocarcinoma were all significantly higher than that in females, non-smokers and patients with adenocarcinoma, and significant differences were present (p<0.05 or p<0.01). In terms of pathological staging, the expression quantities of BRCA1, RRM1 and TYMS in phases IIa~IIb and IIIa~IIIb had a tendency to be greater than in phases I and IV. Conclusions: Resistance to chemotherapy and sensitivity to targeted therapy differ among patients with NSCLC. Differences in gene expression in different individuals were also revealed. Only according to personalized detection results can individualized therapeutic regimens be worked out, which is a new direction for oncotherapy.