Preparation of ZnO@void@SiO2 Rattle Type Core–Shell Nanoparticles via Layer-by-Layer Method

Xiaoman Wang,Junda Song,Hongling Chen 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.9

In this paper, we prepared the rattle type nanoparticles ZnO@void@SiO2 by two successive coating processes, followed by heat treatment. The carbon layer was formed over ZnO surface with the aid of the hydrothermal treatment of glucose. Then the resulting composite was used to fabricate a silica shell on the surface by sol–gel method. Finally, ZnO particles were released but still trapped inside the silica hollow after calcination, that is, ZnO@void@SiO2. The composites were characterized by scanning and transmission electron microscope, N2 adsorption experiment, X-ray diffraction, Fourier transform infrared spectroscopy and UV-Vis absorption spectra. The rattle type structure was conformed and the sphere-like structure with the average size of 70 nm and hexagonal wurtzite crystal structure were also observed. The measurement results of optical properties showed even though ZnO@C@SiO2 presented no photocatalysis, ZnO@void@SiO2 showed high activity even the ZnO core was encapsulated with the SiO2 hollow.

The Use of Toluidine Blue Staining Combined with Paraffin Sectioning and the Optimization of Freeze-thaw Counting Methods for Analysing Root-Knot Nematodes in Tomato

Xiaoman Li,Wenchao Zhao,Xiaoxuan Zhou,Jiaping Feng,Yingjian Gao,Xuehui Yao,Yang Liu,Jie Liu,Rui Yang,Fukuan Zhao,Shaohui Wang 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.6

Root-knot nematodes (RKNs) (Meloidogyne spp.) are one of the most damaging crop pests and cause severeyield losses worldwide. Easier and more efficient methods are needed for assessing nematode infestations and hostplant resistance. In the present study, we combined toluidine blue staining and paraffin sectioning to observe theestablishment of giant cells (GCs; redifferentiated cells induced by nematode feeding) and the developmental status ofRKNs in tomato (Solanum lycopersicum). The number of RKNs was counted using a modified freeze-thaw countingmethod. Finally, three tomato lines with different levels of RKN resistance, but otherwise identical genetic backgrounds,were tested to verify the applicability of the combined method. The results suggested that using toluidine blue stainingcombined with paraffin sectioning and freeze-thaw counting accurately reflects the level of RKN resistance of tomato plants.

Chemical Composition of Aromas and Lipophilic Extracts from Black Morel (Morchella importuna) Grown in China

( Xiaoman Tu ),( Lan Tang ),( Guangbo Xie ),( Kejun Deng ),( Liyuan Xie ) 한국균학회 2021 Mycobiology Vol.49 No.1

Morels (Morchella spp.) are valuable medicinal and edible mushrooms. In this study, chemical profiles of aromas and lipophilic extracts of black morel (Morchella importuna) grown in China were analyzed by gas chromatography/mass spectroscopy, along with the evaluation of antioxidant and antimicrobial activities for the lipophilic extracts. Sixty-five compounds in total were identified from the aromas, and 1-octen-3-ol was the main component for aromas of fresh (34.40%) and freeze-dried (68.61%) black morels, while the most abundant compound for the aroma of the oven-dried sample was 2(5H)-furanone (13.95%). From the lipophilic extracts, 29 compounds were identified with linoleic acid as the main compound for fresh (77.37%) and freeze-dried (56.46%) black morels and steroids (92.41%) as the main constituent for an oven-dried sample. All three lipophilic extracts showed moderate antioxidant activities against 2,2-diphenyl-1-picrylhydrazyl and 2,20-azino-bis(3-ethylbenzothiazoline- 6-sulfonic acid) with the IC₅₀ values ranging 7.56_17.52mg/mL and 5.75_9.73mg/mL, respectively, and no obvious antimicrobial activity was observed for lipophilic extracts. The drying methods affect the chemical profile of black morel, and freeze-drying was favorable for retaining nutrients and morel smell. This is the first report on the aroma and lipophilic extracts of M. importuna grown in China.

Relationships among several similarity measures of single-valued neutrosophic sets

Xiaoman Wang,Ke Yun Qin 원광대학교 기초자연과학연구소 2020 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.19 No.1

Single-valued neutrosophic set (SVNS) handling the uncertainties characterized by truth, indeterminacy, and falsity membership degrees, is an extension of fuzzy set and intuitionistic fuzzy set. It provides a more flexible way to capture uncertainty. This paper is devoted to the disscussion of relationships among several existing similarity measures of SVNSs. In addition, it is shown that some existing similarity measures are equivalent. The comparative results of this study provide convenience for applying similarity measures of SVNSs to practical problems.

The Yin-Yang of DNA Damage Response: Roles in Tumorigenesis and Cellular Senescence

Li, Xiaoman,Xu, Hongde,Xu, Chongan,Lin, Meina,Song, Xiaoyu,Yi, Fei,Feng, Yanling,Coughlan, Kathleen A.,Cho, William Chi-shing,Kim, Sang Soo,Cao, Liu MDPI 2013 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.14 No.2

<P>Senescent cells are relatively stable, lacking proliferation capacity yet retaining metabolic activity. In contrast, cancer cells are rather invasive and devastating, with uncontrolled proliferative capacity and resistance to cell death signals. Although tumorigenesis and cellular senescence are seemingly opposite pathological events, they are actually driven by a unified mechanism: DNA damage. Integrity of the DNA damage response (DDR) network can impose a tumorigenesis barrier by navigating abnormal cells to cellular senescence. Compromise of DDR, possibly due to the inactivation of DDR components, may prevent cellular senescence but at the expense of tumor formation. Here we provide an overview of the fundamental role of DDR in tumorigenesis and cellular senescence, under the light of the Yin-Yang concept of Chinese philosophy. Emphasis is placed on discussing DDR outcome in the light of <I>in vivo</I> models. This information is critical as it can help make better decisions for clinical treatments of cancer patients.</P>

基于“双四维”协同育人模式的数据结构与算法课程思政教学实践

刘小满(Xiaoman Liu),王小辉(Xiaohui Wang),杨照峰(Zhaofeng Yang) YIXIN 출판사 2023 教育教学研究论丛 Vol.1 No.4

专业教育与思政教育协同育人要求下,基于数据结构与算法课程的课程思政教育教学实践,提炼出以个人素养、职业素养、理想信念的“三层进阶式”思政素养育人目标,嵌入“点线面体”四维课程思政教学设计,构建以学生为中心的“双四维”协同育人的课程思政教学模式,通过介绍专业知识教学案例融入思政教育实施过程并说明教学成效。 Under the requirement of collaborative education between professional education and ideological and political education, based on the “Ke-Cheng Si-Zheng” teaching practice of Data Structure and Algorithm course, the “three-level advanced” ideological and political education goal based on personal quality, professional quality, ideal and belief is extracted, and the four-dimensional curriculum ideological and political teaching design is embedded in the “point, line and surface”. Construct the student-centered “double and four-dimensional” curriculum ideological and political teaching mode, and introduce professional knowledge teaching cases into the implementation process of ideological and political education and explain the teaching effect.

Numerical simulation of H2O/CO2's RESIDTRIBUTIOM and exchange between PBL and free atmosphere WITH THERMALS

Liu Xiaoman 한국기상학회 2011 한국기상학회 학술대회 논문집 Vol.2011 No.10-2

中韩慰安妇女性历史书写的比较研究-以纪录片电影《二十二》和《低吟》的比较为中心

??曼(Liu, Xiaoman) 동북아시아문화학회 2020 동북아 문화연구 Vol.1 No.62

Since the 1990s, ‘comfort women’ has been an important issue affecting the diplomatic relations between South Korea and Japan, China and Japan. Regarding the issue of the statue of girl, South Korea is ‘fanaticism’, Japan is ‘evasion’, and China is ‘fade forgetting’. From glamorous women to girls, then converted to old women, the transformation of the image of ‘comfort women’ is actually a revolution in the collective memory and popular discourse surrounding the ‘comfort women’. Therefore, this article pay special attention to the issue of the representation of comfort women in the film media. Through a comparative study of South Korea and China"s “comfort women” documentary films “The Murmuring” and “22”, it will examine the popular discourse of “comfort women” between China and South Korea. In the previous macro narrative, the woman of ‘comfort women’ was asked to be silent and forgotten, but only the object of the narrative. Through the subject matter of documentary film, the interaction between record and memory, and the protagonist learn to tell her story in a ‘low-lying’ way, and express herself in a non-verbal form, which can be seen as corresponding to macro narrative. The new ‘historical writing’ of the comfort women"s is also the growth narrative of the female subject. Besides, compared with the direct gazing view showed in “The Murmuring”, “22” shows the ‘gaze’ of humane care. It can be seen that in the popular discourse in China, the history of comfort women has not matched the current women potential social problems -sexual violence and misogyny, and this part will be a topic worthy of further discussion in the field of Chinese film and culture.

面向韩国学生的汉字教学探析

장효만(Zhang Xiaoman)(张,晓,曼) 동양한문학회(구 부산한문학회) 2015 동양한문학연구 Vol.40 No.-

한국의 한어교육에서 한자교육의 어려움은 주지하고 있는 바이다. 그 원인의 하나는 복잡하고 어려운 한자의 특징과, 부속적인 형태로 존재한 한자 교육이 오랫동안 충분한 중시를 받지 못한데 있다. 한어교육의 발전에 따라 학자들은 차츰 문제의 엄중성을 인식하고 한자교육에 중시를 돌리고 있다. 한자는 형태, 소리, 뜻을 동시에 나타내며, 또한 글자를 기본단위로 하여 구성되어 있는 특징을 지니고 있다. 이런 특징은 한자교육이 특수성을 띠게 한다. 본고에서는“자본위(字本位)”교육이론을 바탕으로 한자문화권 한국학습자들의 한자학습 난이도에 근거하여 한자교육의 현황을 조사하고 한자교육의 새로운 방법에 대해 탐구하였으며, 한자교육방법과 교과과정설치 그리고 교재편찬에 대해 건설적인 방안을 제시하고 독립적인 한자과목을 개설할 것을 건의하였다. 이는 한어교육의 활성화에 일조를 할 것이다. The integration of form, pronunciation and meaning of Chinese character and the feature of taking character as the basic structural unit of Chinese language determine the particularity of Chinese character teaching. Guided by the character-based teaching theory and following the features and rules of Chinese characters, this paper analyzes the Chinese character teaching based on the difficulty and emphasis in Chinese character learning for Korean students in Chinese character cultural circle and suggests the opening of an independent Chinese character course in order to better meet the need of Chinese teaching.

韩国语、朝鲜语、中国朝鲜语汉字词使用现状研究

張曉曼(Zhang Xiaoman),尙安新(Shang Anxin) 동양한문학회(구 부산한문학회) 2014 동양한문학연구 Vol.38 No.-

한국어, 조선어와 중국조선어는 비록 일정한 차이가 있지만 유형적 분류에 있어서 동일한 언어에 속하는 언어변종으로서 알타이어족에 속하며 교착어이다. 본 논문은 한국어와 조선어, 그리고 중국조선어에서의 한자어 사용 실태에 대해 분석하고 연구함으로써 한국어교육과 중국어교육에 일정한 도움을 주고자 한다. Although there are some differences between North Korean, South Korean and Chinese Korean internally, they are different variants of the same language and all belong to agglutinative language in Altaic language family according to typological classification. The paper discusses the current use of Chinese words in South Korean, North Korean and Chinese Korean and is expected to contribute to the Korean language teaching and Chinese language teaching.