Improved Work Function of Preferentially Oriented Indium Oxide Films Induced by the Plasma Exposure Technique

Lei Yang,Shuai Guo,Qiuling Yang,Yuankun Zhu,Bing Dai,Hailing Yu,Pei Lei,Jiecai Han,Ying Hou,Jiaqi Zhu 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.6

The preferentially oriented In2O3 thin films were prepared on glass substrates by conventional magnetron sputtering with Ar+ plasma exposure at room temperature. Based on the x-ray diffraction, x-ray photoelectron spectroscopy, and UV photoelectron spectroscopy results, it was found that the Ar+ plasma exposure not only enhanced the low-temperature crystallization of In2O3 thin films, but also led to a dramatic improvement in the work function. Furthermore, it demonstrated that the shift mechanism of the work function in In2O3 thin films mainly combined with theelimination of oxygen defects and the change of the preferential orientation of In2O3 film surface.

A LightGBM and XGBoost Learning Method for Postoperative Critical Illness Key Indicators Analysis

( Lei Han ),( Yiziting Zhu ),( Yuwen Chen ),( Guoqiong Huang ),( Bin Yi ) 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.8

Accurate prediction of critical illness is significant for ensuring the lives and health of patients. The selection of indicators affects the real-time capability and accuracy of the prediction for critical illness. However, the diversity and complexity of these indicators make it difficult to find potential connections between them and critical illnesses. For the first time, this study proposes an indicator analysis model to extract key indicators from the preoperative and intraoperative clinical indicators and laboratory results of critical illnesses. In this study, preoperative and intraoperative data of heart failure and respiratory failure are used to verify the model. The proposed model processes the datum and extracts key indicators through four parts. To test the effectiveness of the proposed model, the key indicators are used to predict the two critical illnesses. The classifiers used in the prediction are light gradient boosting machine (LightGBM) and eXtreme Gradient Boosting (XGBoost). The predictive performance using key indicators is better than that using all indicators. In the prediction of heart failure, LightGBM and XGBoost have sensitivities of 0.889 and 0.892, and specificities of 0.939 and 0.937, respectively. For respiratory failure, LightGBM and XGBoost have sensitivities of 0.709 and 0.689, and specificity of 0.936 and 0.940, respectively. The proposed model can effectively analyze the correlation between indicators and postoperative critical illness. The analytical results make it possible to find the key indicators for postoperative critical illnesses. This model is meaningful to assist doctors in extracting key indicators in time and improving the reliability and efficiency of prediction.

Trends in Specific Immunotherapy for Allergic Rhinitis: A Survey of Chinese ENT Specialists

Han Zhou,Qi-Lei Tao,Jun-Min Wei,Geng Xu,Lei Cheng 대한천식알레르기학회 2014 Allergy, Asthma & Immunology Research Vol.6 No.4

Purpose: Specific immunotherapy (SIT) is a suitable but uncommon treatment option for allergic rhinitis (AR) in China. The current understandingand attitude of Chinese ENT (ear, nose, and throat) specialists in regards to SIT is unclear. This study investigates current trends in the awarenessand application status of SIT among Chinese ENT specialists. Methods: We performed a nationwide, cross-sectional survey with a specially designedquestionnaire given to 800 ENT specialists in China. A member of the trained research group conducted face-to-face interviews with eachrespondent. Results: Most of the respondents considered AR (96.0%) and allergic asthma (96.0%) the most suitable indications for SIT. Of all respondents,77.0% recommended the application of SIT as early as possible; in addition, SIT was considered ‘relatively controllable and safe’ bymost respondents (80.6%). The highest allergen-positive rate in AR was associated with house dust mite (47.7%) and obvious differences existedamong geographical regions. Conventional subcutaneous immunotherapy was the most highly recommended treatment option (96.2%). ‘The highcost of SIT’ (86.6%) and ‘lack of patient knowledge of SIT’ (85.2%) were probably the main reasons for the lower clinical use of SIT in China. Conclusions:Most cases showed that the opinions of Chinese ENT specialists appeared to be in agreement with recent SIT progress and internationalguidelines; however, many areas still need to enhance the standardization and use of SIT in China. Clinical guidelines for SIT require improvement;in addition, Chinese ENT specialists need continuing medical education on SIT.

논문(論文) : 종사건범주도사건명사(從事件範疇到事件名詞)

한뢰 ( Lei Han ) 고려대학교 중국학연구소 2011 中國學論叢 Vol.31 No.-

As a philosophical and cognitive concept, event is a secondary category derived from the thing and the action, and has the fused features of time and space, dynamic and static. For most languages, the mapping from the pragmatic reference category and the semantic event category to the grammatical noun form is a marked one. Comparing English and Chinese, during the connective process from the event sentence to pure event noun, English has rich forms of nominalization with slightly difference approaching to event noun, which cannot be found in Chinese. So how the event category is mapped in Chinese nouns should be paid more attention to.

Is Surgical Resection Justified for Hepatocellular Carcinoma with Portal Vein Tumor Thrombus? (A Systematic Review and Meta-Analysis)

( Liang Lei ),( Xin-fei Xu ),( Jiong-jie Yu ),( Ju-dong Li ),( Zhen-li Li ),( Jun Han ),( Han Zhang ),( Hao Xing ),( Han Wu ),( Ming-da Wang ),( Chao Li ),( Zheng Wang ),( Feng Shen ),( Meng-chao Wu ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

Aims: The prognosis of hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT) is very poor. According to the BCLC treatment recommendations, sorafenib or other palliative treatment (PT) is recommended as the first-line therapy when it happens. In real world, however, a significant number of selected patients with HCC and PVTT suffered from surgical resection (SR). Methods: PubMed, Embase, Medline and Cochrane library were searched for studies comparing SR with PT (including TACE, sorafenib, etc.) for HCC with PVTT, which were published before September 2017. Results: 4,810 patients from 7 studies were enrolled in this meta-analysis, which divided into the SR group (n = 2,344) and the PT group (n = 2476). When compared with the PT group, the pooled hazard ratio (HR) for the 1, 3 and 5-year OS rates of the SR group were 0.56 (95% CI 0.52-0.60, P=0.03), 0.56 (95% CI 0.53-0.59, P<0.001) and 0.55 (95% CI 0.54-0.57, P<0.001). For subgroup analysis, when compared with the mere TACE group, the pooled HR for the 1, 3 and 5-year OS rates of the SR group were 0.54 (95% CI 0.43-0.67, P=0.81), 0.75 (95% CI 0.65-0.87, P=0.25) and 0.76 (95% CI 0.67-0.88, P=0.25). Conclusions: This meta-analysis demonstrated SR had better OS than TACE or other palliative therapy for HCC with PVTT. SR may be suitable as the first-line treatment for selected patients with resectable HCC and removable PVTT.

The Numerical Simulation Analysis of Flow Field in Level Control Valve of Water Storage Tank

Yaping Wang,Lei Gao,Jianghua Ge,Han Gao,Jing Zhang 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.10

Level control valve of water storage tank is installed in the outlet of tank, which control the water level of water storage tank by adjusting the water emissions, which make great significance for the safe operation of the super (super) criticality thermal power unit boiler . Complete the simulation analysis of internal flow field by the method of numerical simulation ,in order to achieve structure improvements of level control valve of water storage tank, that make level control valve of water storage tank better meet the work requirements. Establish flow channel model and mesh models of level control valve of water storage tank in various stages of the open process. Make three dimensional viscous numerical simulation of the internal complex flow field by the computational fluid dynamics software of ANSYS CFX. The error between the simulation values of the flow coefficient and the theoretical values , trial values is less than 5% ,which verifies the correctness of the simulation results . Get pressure contour , velocity streamline diagrams and outlet mass flow of level control valve of water storage tank in various stages of the open process. According to the pressure contours and velocity streamline diagrams, make detailed analysis of the flow field of level control valve of water storage tank. According to the dates of outlet mass flow, fit the flow characteristic curve of level control valve of water storage tank. Provide a theoretical basis for the structural design of level control valve of water storage tank.

Inverse Source Imaging Methods in Recovering Distributed Brain Sources

Lei Ding,Han Yuan 대한의용생체공학회 2012 Biomedical Engineering Letters (BMEL) Vol.2 No.1

Over the past decades tremendous efforts have been made in developing functional neuroimaging techniques to better understand human brain functions in both normal and diseased states. Towards this goal, it is essential to develop a technique that can noninvasively image human brain activity with high spatial and temporal resolution. Electroencephalography (EEG) and magnetoencephalography (MEG) are important tools for studying the human brain’s large-scale neuronal dynamics, thanks to their millisecond temporal resolution. However, EEG and MEG are limited in providing spatial information concerning the location of active sources in the brain. Localizing the sources of EEG/MEG dynamics can be achieved by the so-called electrophysiological source imaging techniques. Recently, there has been a growing interest in source imaging techniques in recovering distributed brain sources. Such distributed source imaging techniques have been advanced in many aspects, including the forward modeling and the inverse imaging, and have been shown promising in many neuroscience and clinical applications. This paper reviews the basic principles, recent advancements and applications of the distributed source imaging techniques.

Y-Single Nucleotide Polymorphisms Diversity in Chinese Indigenous Horse

Han, Haoyuan,Zhang, Qin,Gao, Kexin,Yue, Xiangpeng,Zhang, Tao,Dang, Ruihua,Lan, Xianyong,Chen, Hong,Lei, Chuzhao Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.8

In contrast to high genetic diversity of mitochondrial DNA (mtDNA), equine Y chromosome shows extremely low variability, implying limited patrilines in the domesticated horse. In this study, we applied direct sequencing and restriction fragment length polymorphism (RFLP) methods to investigate the polymorphisms of 33 Y chromosome specific loci in 304 Chinese indigenous horses from 13 breeds. Consequently, two Y-single nucleotide polymorphisms (SNPs) (Y-45701/997 and Y-50869) and one Y-indel (Y-45288) were identified. Of those, the Y-50869 (T>A) revealed the highest variation frequency (24.67%), whereas it was only 3.29% and 1.97% in Y-45288 (T/-) and Y-45701/997 (G>T) locus, respectively. These three mutations accounted for 27.96% of the total samples and identified five Y-SNP haplotypes, demonstrating genetic diversity of Y chromosome in Chinese horses. In addition, all the five YSNP haplotypes were shared by different breeds. Among 13 horse breeds analyzed, Balikun horse displayed the highest nucleotide diversity (${\pi}=5.6{\times}10^{-4}$) and haplotype diversity (h = 0.527), while Ningqiang horse showed the lowest nucleotide diversity (${\pi}=0.00000$) and haplotype diversity (h = 0.000). The results also revealed that Chinese horses had a different polymorphic pattern of Y chromosome from European and American horses. In conclusion, Chinese horses revealed genetic diversity of Y chromosome, however more efforts should be made to better understand the domestication and paternal origin of Chinese indigenous horses.

New approach for detecting a compressed bino/wino at the LHC

Han, Chengcheng,Wu, Lei,Yang, Jin Min,Zhang, Mengchao,Zhang, Yang American Physical Society 2015 PHYSICAL REVIEW D - Vol.91 No.5

Constraining top partner and naturalness at the LHC and TLEP

Han, Chengcheng,Kobakhidze, Archil,Liu, Ning,Wu, Lei,Yang, Bingfang Elsevier 2015 Nuclear Physics, Section B Vol.890 No.-

<P><B>Abstract</B></P> <P>We investigate indirect constraints on the top partner within the minimal fermionic top partner model. By performing a global fit of the latest Higgs data, <SUB> B s </SUB> → <SUP> μ + </SUP> <SUP> μ − </SUP> measurements and the electroweak precision observables we find that the top partner with the mass up to 830 GeV is excluded at 2<I>σ</I> level. Our bound on the top partner mass is much stronger than the bounds obtained from the direct searches at the LHC. Under the current constraints the fine-tuning measure is less than 9% and the branching ratio of T → t Z is bounded between 14% and 25%. We also find that precise measurements of Higgs couplings at 240 GeV TLEP will constrain the top partner mass in multi-TeV region.</P>