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Lin Sun,Zhijun Wang,Ge Gentu,Yushan Jia,Meiling Hou,Yimin Cai 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.6
Objective: To effectively use corn stover resources as animal feed, the changes in microbial population and chemical composition of corn stover during field exposure, and their silage fermentation and in vitro digestibility were studied. Methods: Corn cultivars (Jintian, Jinnuo, and Xianyu) stovers from 4 random sections of the field were harvested at the preliminary dough stage of maturity on September 2, 2015. The corn stover exposed in the field for 0, 7, 15, 30, 60, 90, and 180 d, and their silages at 60 d of ensiling were used for the analysis of microbial population, chemical composition, fermentation quality, and in vitro digestibility. Data were analyzed with a completely randomized 3×6 [corn stover cultivar (C)×exposure d (D)] factorial treatment design. Analysis of variance was performed using SAS ver. 9.0 software (SAS Institute Inc., Cary, NC, USA). Results: Aerobic bacteria were dominant population in fresh corn stover. After ensiling, the lactic acid bacteria (LAB) became the dominant bacteria, while other microbes decreased or dropped below the detection level. The crude protein (CP) and water-soluble carbohydrate (WSC) for fresh stover were 6.74% to 9.51% and 11.75% to 13.21% on a dry matter basis, respectively. After exposure, the CP and WSC contents decreased greatly. Fresh stover had a relatively low dry matter while high WSC content and LAB counts, producing silage of good quality, but the dry stover did not. Silage fermentation inhibited nutrient loss and improved the fermentation quality and in vitro digestibility. Conclusion: The results confirm that fresh corn stover has good ensiling characteristics and that it can produce silage of good quality.
Robust Image Watermarking via Perceptual Structural Regularity-based JND Model
( Chunxing Wang ),( Meiling Xu ),( Wenbo Wan ),( Jian Wang ),( Lili Meng ),( Jing Li ),( Jiande Sun ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.2
A better tradeoff between robustness and invisibility will be realized by using the just noticeable (JND) model into the quantization-based watermarking scheme. The JND model is usually used to describe the perception characteristics of human visual systems (HVS). According to the research of cognitive science, HVS can adaptively extract the structure features of an image. However, the existing JND models in the watermarking scheme do not consider the structure features. Therefore, a novel JND model is proposed , which includes three aspects: contrast sensitivity function, luminance adaptation, and contrast masking (CM). In this model, the CM effect is modeled by analyzing the direction features and texture complexity, which meets the human visual perception characteristics and matches well with the spread transform dither modulation (STDM) watermarking framework by employing a new method to measure edge intensity. Compared with the other existing JND models, the proposed JND model based on structural regularity is more efficient and applicable in the STDM watermarking scheme. In terms of the experimental results, the proposed scheme performs better than the other watermarking scheme based on the existing JND models.
Moon, Jeong Hee,Sun, Meiling,Kim, Myung Soo Springer New York LLC 2007 Journal of the American Society for Mass Spectrome Vol.18 No.6
<P>The Beyer-Swinehart (BS) algorithm, which calculates vibrational state density and sum, was modified for simultaneous treatment of degenerate vibrations. The modified algorithm was used in the grouped-frequency mode of the Rice-Ramsperger-Kassel-Marcus (RRKM) unimolecular reaction rate constant calculation for proteins with relative molecular mass as large as 100,000. Compared to the original BS method, reduction in computation time by a factor of around 3000 was achieved. Even though large systematic errors arising from frequency grouping were observed for state densities and sums, they more or less canceled each other, thus enabling reliable rate constant calculation. The present method is thought to be adequate for efficient and reliable RRKM calculations for any macromolecule in the gas phase such as the molecular ions of proteins, nucleic acids, and carbohydrates generated inside a mass spectrometer. The algorithm can also be used to calculate the internal energy distribution of a macromolecule at thermal equilibrium.</P>
쓰기에 어려움이 있는 학생을 위한 쓰기중재 단일대상연구에 대한 메타분석 : 경도지적장애, 학습장애, 학습부진학생을 중심으로
고서연 ( Ko Seo-yeon ),백영선 ( Paek Young-sun ),길한아 ( Kil Hanah ),김미령 ( Jin Meiling ),( Sakura Yusuke ),손승현 ( Son Seung-hyun ) 대구대학교 한국특수교육문제연구소 2018 특수교육저널 : 이론과 실천 Vol.19 No.2
본 연구에서는 ‘쓰기에 어려움이 있는 학생’을 대상으로 쓰기중재를 실시한 연구들을 수집하여 메타분석을 실시하였다. 이를 위해 메타ANOVA를 통해 쓰기중재의 효과크기에 영향을 미치는 조절변수들을 대상자 관련 변인인 대상자 유형, 성별, 학년, 지능지수와 중재 관련 변인인 중재유형, 중재회기, 중재시간, 쓰기영역으로 나누어 살펴보았다. 분석대상 논문은 2001년부터 2017년까지의 연구보고서 및 학술지 논문을 포함하여 총 34편이었으며, 총 159개의 효과크기(Tau-U)가 도출되었다. 분석 결과, 쓰기중재연구의 쓰기능력 향상에 대한 중재 및 유지의 효과성이 입증되었으며, 중재회기 및 중재시간에 따른 유의한 조절효과가 나타났다. 마지막으로 본 연구의 한계 및 시사점에 관해 논하였다. The purpose of this study was to assess the impact of writing interventions on "students with difficulty in writing" defining students with mild intellectual disabilities, learning disabilities, and low achievement. A meta-analysis was conducted by collecting single-subject research about writing intervention for those students. In addition, through the meta-ANOVA, the control variables were divided into the subject-related variables(type, gender, grade, IQ) and the intervention -related variables(type, session, time, and writing target area). A total of 34 articles were analyzed from 2001 to 2017, and a total of 159 effect sizes(Tau-U) were derived. As a result of the meta-analysis, the effectiveness of the writing intervention studies were proved, and the moderating effect was shown in the intervention session and intervention time. Finally, the limitations and implications of this study were discussed.
House Dust Mite Increases pro-Th2 Cytokines IL-25 and IL-33 via the Activation of TLR1/6 Signaling
Jang, Yong Hyun,Choi, Jin Kyeong,Jin, Meiling,Choi, Young-Ae,Ryoo, Zae Young,Lee, Hyun-Shik,Park, Pil-Hoon,Kim, Sun-Uk,Kwon, Taeg Kyu,Jang, Myoung Ho,Im, Sin-Hyeog,Moon, Sun Young,Lee, Weon Ju,Lee, Se Williams & Wilkins 2017 The Journal of investigative dermatology Vol.137 No.11
( Yong Hyun Jang ),( Hyun Bo Sim ),( Sun Young Moon ),( Weon Ju Lee ),( Seok-jong Lee ),( Meiling Jin ),( Sang-hyun Kim ),( Do Won Kim ) 대한피부과학회 2017 Annals of Dermatology Vol.29 No.4
Background: The relationship between atopic dermatitis (AD) and low vitamin D levels has been studied. Emerging evidence has implicated vitamin D as a critical regulator of immunity, playing a role in both the innate and cell-mediated immune systems. However, the effect of vitamin D on house dust mite (HDM) sensitization in patients with AD has not been established. Objective: We investigated the associa-tion between vitamin D levels and HDM sensitization ac-cording to AD severity. Methods: In total, 80 patients (43 men and 37 women) with AD were included. We classified AD severity using Rajka and Langeland scores. Laboratory tests included serum 25-hydroxyvitamin D3, total im-munoglobulin E (IgE), and specific IgE antibody titer against Dermatophagoides farinae and D. pteronyssinus. Results: There were no differences in vitamin D levels between the mild or moderate AD and severe AD groups. In the severe AD group, high HDM sensitization group had lower serum vitamin D levels compared to low HDM sensitization group with statistical significance. In addition, a significant neg-ative correlation was found between vitamin D levels and HDM sensitization in the severe AD group. Conclusion: Our results demonstrate that low vitamin D levels may link to high HDM sensitization in patients with the severe AD. Further elucidation of the role of vitamin D in HDM sensitiza-tion may hold profound implications for the prevention and treatment of AD. (Ann Dermatol 29(4) 400∼406, 2017)
Effects of Chlorine Addition to TiO2 Nanorods-Based Perovskite Solar Cells
Dong Zhao,Rendong Wang,Pengfei Wang,Shutao Li,Zhao Li,Meiling Sun,Yunyan Liu,Junshan Xiu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.6
Titanium dioxide (TiO2) nanorods (NR) structure and Chlorine substitution is beneficial to the extraction and diffusion of electrons in perovskite solar cells (PSCs). In this work, different concentrations of PbCl2 in perovskite are integrated with TiO2 (NR) to fabricate PSCs. The total thickness of perovskite absorber layer and electron transport layer (ETL) is about 850 nm, and the PSCs exhibit excellent performance. Scanning electron microscope (SEM) and X-ray diffraction (XRD) test reveal that moderate PbCl2 additive improves the perovskite film morphology and crystal quality of perovskite films. Optimal perovskite films with high crystallinity and uniform surface were prepared by adding 3 mol% PbCl2 into perovskite precursor solution, the crystal boundary and defect states are greatly reduced, thus reducing the electrons and holes recombination. The power conversion efficiency (PCE) enhancement of the device with this optimal molar ratio of PbCl2 is over 24% compared with the device without PbCl2.
Jing Yang,Wang Xingyuan,Zhou Tingting,Wei Liangjun,Guo Meiling,Liu Yanan,Sun Xiaoqi,Wang Yanjie 한국탄소학회 2024 Carbon Letters Vol.34 No.3
This paper presents the construction and characterization of an amperometric immunosensor based on the graphene/gold nanoparticles (AuNPs/GO) nanocomposite for the detection of the bladder cancer biomarker, apolipoprotein A1 (Apo-A1). The morphological analysis of the AuNPs/GO nanocomposite demonstrated an almost spherical shape of AuNPs and the successful coverage of their surface by graphene oxide. An increased G peak and decreased D peak after the association of AuNPs with GO, implied a reduction in graphene defects. The X-ray photoelectron spectroscopy (XPS) indicated a significant decrease in the quantity of oxygen-containing functional groups in the AuNPs/GO nanocomposite, as compared to the original GO. Furthermore, the developed sensor demonstrated commendable sensitivity and selectivity, with a wide linear range for Apo-A1 detection. Importantly, the immunosensor exhibited remarkable stability over a period of 14 days, signifying its potential for practical applications.