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A review on graphite surface modification methods towards low carbon-containing refractories

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Journal of Iron and Steel Research International 2024年第6期31卷 1291-1303页

作者： ting-ting Zhang Jun Ding Bei-yue Ma Zheng-long liu Chao Yu Cheng-ji Deng The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina

The rapid development of iron and steel metallurgy technology has promoted the continuous innovation and iteration of carbon-containing refractories for clean steel *** meet the high-quality requirements for clean steel production and full exploit the performance advantages of carbon-containing refractories in dynamic smelting environment,it is necessary to explore the role of graphite and modified graphite in carbon-containing *** on this,graphite surface modification methods,including surfactants,surface oxidation,and surface coating,and their applications in carbon-containing refractories are *** advantages and disadvantages of each method are analyzed for practical ***,combined with the existing problems,the application prospect of improved graphite in carbon-containing refractories is discussed.

关键词： Graphite Carbon-containing refractory Clean steel Surface modification Service performance

Molecular identification of Sporothrix clinical isolates in China

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2014年第1期15卷 100-108页

作者： ting-ting liu Ke ZHANG Xun ZHOU Department of Dermatology Affiliated Hospital of Chongqing Medical University Chongqing 400016 China State Key Laboratory of Mycology Institute of Microbiology Chinese Academy of Sciences Beijing 100101 China

In this study, we investigated the molecular phylogeny of 64 clinical isolates which were identified as Sporothrix schenckii sensu lato by morphological identification. All of the strains were isolates from patients from several provinces in China. The phylogeny was inferred by DNA sequence analyses based on datasets of the ribo- somal internal transcribed spacer （ITS） and a combined ITS and partial 13-tubulin region. Reference sequences were retrieved from GenBank. Results showed that all of the isolates were clustered in a distinct clade with a type of Spo- rothrix globosa. Our analysis showed that S. globosa is the causal agent of the tested sporotrichosis in China, rather than S. schenckii that was generally believed to be the case. The existence of S. schenckii in China remains to be confirmed. This study improved our understanding of the distribution of the species in S. schenckii complex.

关键词： Internal transcribed spacer (ITS) Diagnosis Sporothrix globosa Taxonomy Phylogeny

Rapid prediction of damaged ship roll motion responses in beam waves based on stacking algorithm

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Journal of Hydrodynamics 2024年第2期36卷 394-405页

作者： Xin-ran liu ting-qiu Li Zi-ping Wang School of Naval Architecture Ocean and Energy Power EngineeringWuhan University of TechnologyWuhan430063China

Accurate modeling for highly non-linear coupling of a damaged ship with liquid sloshing in waves is still of considerable interest within the computational fluid dynamics(CFD)and AI *** paper describes a data-driven Stacking algorithm for fast prediction of roll motion response amplitudes in beam waves by constructing a hydrodynamics model of a damaged ship based on the dynamic overlapping grid CFD *** general idea is to optimize various parameters varying with four types of classical base models like multi-layer perception,support vector regression,random forest,and hist gradient boosting *** offers several attractive properties in terms of accuracy and efficiency by choosing the standard DTMB 5415 model with double damaged compartments for *** is clearly demonstrated that the predicted response amplitude operator(RAO)in the regular beam waves agrees well with the experimental data available,which verifies the accuracy of the established damaged ship hydrodynamics *** high-quality CFD samples,therefore,implementation of the designed Stacking algorithm with its optimal combination can predict the damaged ship roll motion amplitudes effectively and accurately(e.g.,the coefficient of determination 0.9926,the average absolute error 0.0955 and CPU 3s),by comparison of four types of typical base models and their various ***,the established Stacking algorithm provides one potential that can break through problems involving the time-consuming and low efficiency for large-scale lengthy CFD simulations.

关键词： Ship motion damaged ship computational fluid dynamics(CFD) machine learning stacking algorithm

Influence of fin architectures on linearity characteristics of AlGaN/GaNFinFETs

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Chinese Physics B 2018年第4期27卷 432-436页

作者： ting-ting liu Kai Zhang Guang-Run Zhu Jian-Jun Zhou Yue-Chan Kong Xin-Xin Yu Tang-Sheng Chen Research Institution China Electronic Equipment ＆ System Engineering Company Beijing 100039 China Science and Technology on Monolithic Integrated Circuits and Modules Laboratory Nanjing Electronic Devices Institute Nanjing 210016 China

We investigate the influence of fin architecture on linearity characteristics of AlGaN/*** is found that the Fin FET with scaled fin dimensions exhibits much flatter Gm characteristics than the one with long fins as well as planar *** to the comparative study,we provide direct proof that source resistance rather than tri-gate structure itself dominates the Gm ***,power measurements show that the optimized FinFET is capable of delivering a much higher output power density along with significant improvement in linearity characteristics than conventional planar *** study also highlights the importance of fin design in GaN-based FinFET for microwave power application,especially high-linearity applications.

关键词： AlGaN/GaNFinFETs output power density linearity characteristics

Copper-coated Porous Polyimide as Ultralight and Safe Current Collectors for Advanced LIBs

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Chinese Journal of Polymer Science 2024年第4期42卷 521-531页

作者： Cun-Sheng liu Jun-Qi Hu ting-ting Mao Song-Yi Liao Ru-Ming Feng Yi-Dong liu Yong-Gang Min School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China College of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhou510225China Shanwei Branch of Advanced Energy Science and Technology Guangdong Laboratory Shanwei516600China

Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of commercial copper foil(~8.9 g·cm^(-3)) limits the increase of energy density of battery. Here, copper-coated porous polyimide(Cu@PPI) was prepared by vacuum evaporation as collector for the graphite anode. The sandwich structure connects the copper metal on both sides of the collector with excellent electrical conductivity. Compared to commercial Cu foil, Cu@PPI has lighter mass(≤3.9 mg for disc of 12 mm diameter versus 9.9 mg of ~10 μm Cu foil) and lower volume density(≤3.3 g·cm^(-3)). In addition, the porous structure allows of better adhesion of reactive substances and electrochemical properties than pure Cu foils. It is estimated that the energy density of Cu@PPI should be much higher than that of Cu foil. This strategy should be applicable for other current collectors.

关键词： Copper-coated Vacuum evaporation Porous polyimide(PPI) Current collector(CC) LIBs

Effects of parental involvement in infant care in neonatal intensive care units:a meta-analysis

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Frontiers of Nursing 2018年第3期5卷 207-215页

作者： ting-ting liu Meng-Jie Lei Yu-Feng Li Ya-Qian liu Li-Na Meng Chang-De Jin School of Nursing Tianjin University of Traditional Chinese Medicine

Objective： This meta-analysis aimed to examine the effects of parental involvement in infant care in neonatal intensive care units （NlCUs）. Methods： PubMed, Embase, Cochrane Library, Web of Science, China National Knowledge Infrastructure （CNKI）, Wanfang database, and VIP database were searched till November 2017. Randomized controlled trials （RCTs） and controlled clinical trials （CCTs） examining the effect of parental involvement in the NICU were considered for inclusion. Resulls： We included 10 studies （three RCTs, seven CCTs） with a total of 1,851 participants. The meta-analysis demonstrated that there were no statistically significant differences on nosocomial infection between two groups （risk ratio [RR] = 0.90, 95% CI 0.63-1.30, P = 0.58）. Compared with no parental involvement groups, parental involvement groups showed more weight gain （mean difference [MD] = 1.47, 95% CI 0.65-2.29, P 〈 0.05）, higher breast-feeding rate （RR = 1.38, 95% CI 1.25-1.53, P 〈 0.05）, lower readmission rate （RR = 0.35, 95% CI 0.15-0.80, P 〈 0.05）, and higher satisfaction rate （RR = 1.09, 95% CI 1.02-1.16, P 〈 0.05）.Conclusions： Parentaiinvolvement in the NICU interventions could not increase the rate of nosocomial infection of neonates, but could improve their weight gain, breast-feeding and parental satisfaction and decrease their readmission. However, since the conclusion of this meta-analysis was drawn based on the limited number of high-quality RCTs, more hioh-quality studies should be conducted in the future to confirm its positive intervention effects.

关键词： family integrated care intensive care units neonatal infant newbom meta-analysis

Relationship between self-directed learning readiness, learning attitude, and self-efficacy of nursing undergraduates

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Frontiers of Nursing 2019年第4期6卷 341-348页

作者： Li-Na Meng Xiao-Hong Zhang Meng-Jie Lei Ya-Qian liu ting-ting liu Chang-De Jin Graduate Department Tianjin University of Traditional Chinese MedicineTianjin 301617China School of Nursing Tianjin University of Traditional Chinese MedicineTianjin 301617China

Objective: The purposes of this study were to analyze the influencing factors of self-directed learning readiness(SDLR) of nursing undergraduates and explore the impacts of learning attitude and self-efficacy on nursing ***: A total of 500 nursing undergraduates were investigated in Tianjin, with the Chinese version of SDLR scale, learning attitude questionnaire of nursing college students, academic self-efficacy scale, and the general information ***: The score of SDLR was 149.99±15.73. Multiple stepwise regressions indicated that academic self-efficacy, learning attitude, attitudes to major of nursing, and level of learning difficulties were major influential factors and explained 48.1% of the variance in SDLR of nursing ***: The score of SDLR of nursing undergraduates is not promising. It is imperative to correct students' learning attitude, improve self-efficacy, and adopt appropriate teaching model to improve SDLR.

关键词： self-directed learning readiness nursing undergraduates learning attitude academic self-efficacy relationship

Small molecule induces mitochondrial fusion for neuroprotection via targeting CK2 without affecting its conventional kinase activity

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Signal Transduction and Targeted Therapy 2021年第3期6卷 975-987页

作者： Ke-Wu Zeng Jing-Kang Wang Li-Chao Wang Qiang Guo ting-ting liu Fu-Jiang Wang Na Feng Xiao-Wen Zhang Li-Xi Liao Mei-Mei Zhao Dan liu Yong Jiang Pengfei Tu State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Proteomics Laboratory Medical and Healthy Analytical CenterPeking University Health Science CenterBeijing 100191China

Mitochondrial fusion/hission dynamics plays a fundamental role in neuroprotection;however,there is till a severe lack oftherapeutic targets for this biological ***,we found that the naturally derived small molecule echinacoside(ECH)signifhcantly promotes mitochondrial fusion *** selectively binds to the previously uncharacterized casein kinase 2(CK2)α'subunit(CK2a)as a direct cellular target,and genetic knockdown of CK2α'abolishes ECH-mediated mitochondrial ***,ECH allosterically regulates CK2α'conformation to recruit basic transcription factor 3(BTF 3)to form a binary ***,the CK2α'/BTF3 complex facilitatesβ-catenin nuclear translocation to activate TCF/AEF transcription factors andstimulate transcription of the mitochondrial fusion gene ***,in a mouse middle cerebral artery occlusion(MCAO)model,ECH administration was found to significantly improve cerebral injuries and behavioral deficits by enhancing Mfn2expression in wild-type but not CK2α'^(+/-)*** together,our findings reveal,for the first time,that CK2 is essential forpromoting mitochondrial fusion in a Wnt/B-catenin-dependent manner and suggest that pharmacologically targeting CK2 is apromising therapeutic strategy for ischemic stroke.

关键词： injuries cerebral Small

Impact pressure of waves generated by landslides on bank slopes

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Journal of Mountain Science 2024年第3期21卷 918-931页

作者： CAO ting WANG Pingyi QIU Zhenfeng liu Jie Key Laboratory of Hydraulic and Waterway Engineering of Ministry of Education Chongqing Jiaotong UniversityChongqing 400074China Engineering Research Center of Diagnosis Technology and Instruments of Hydro-Construction Chongqing Jiaotong UniversityChongqing 400074China

Impulse waves that are generated by landslides in narrow reservoir areas threaten the stability of buildings and bank *** discuss the action process and evolution law of the wave pressure on bank slopes,a three-dimensional physical model test that considers impulse waves generated by landslides was performed,and factors including landslide width,thickness,slope angles of the sliding surface,and bank slope angle were *** on wave forms on the bank slopes,wave pressure curve characteristics,and peak value,the action process of wave pressure could be divided into the following stages:maximum pulsating pressure stage,wave impact stage(when waves break),and stationary pulsation *** was found that wave breaking is dependent on the value of the surf similarity parameterξ.The distribution pattern of impact pressure decays linearly on both sides of the maximum impact pressure point,and the attenuation degree decreases when it attains 40%of the maximum ***,it is proposed that the prediction formula for the maximum effective impact pressure of the bank slope be related to the reciprocal of wave steepness,relative water depth,and slope *** prediction formula provides strong theoretical support for early safety warning and for predicting the bank slope under impulse waves generated by landslides.

关键词： Model test Impact pressure Action stage Breaking discrimination Distribution model