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Magnesium hydroxide whisker modified via in situ copolymerization of n-butyl acrylate and maleic anhydride

Rare Metals 2017年第12期36卷 997-1002页

作者： Yu-Zhi Jiang Yu-lian Wang Chun-yan Wang li-Mei Bai Xin li yan-bo li Collogy of Materials Science and Engineering Shenyang Ligong University Shenyang 110159 China Kailong Lanfeng New Material Technology Co. LtdZhenjiang 212132 China College of Mining Engineering Hebei United UniversityTangshan 063009 China School of Materials Science and Engineering Central South University Changsha 410083 China

Magnesium hydroxide(MH) whiskers were modified via in situ polymerization of n-butyl acrylate and maleic anhydride. Sodium dodecyl sulfonate was used as emulsifier. The modifying effect was evaluated by using contact angle and activation index. The thermal stability,functional groups, structure, morphology, phase composition and surface element valence of MH whiskers were characterized by thermogravimetry-differential scanning calorimetry(TG-DSC), Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), scanning electron microscopy(SEM) and X-ray photoelectron spectroscopy(XPS). Results reveal that the contact angle and activation index of modified MH whiskers are 105°and 76.5%, the thermal stability shows little change, and the decomposition temperature ranges between 38 and419 ℃. The copolymer of n-butyl acrylate and maleic anhydride absorbed on the surface of MH whiskers leads to the increased diameter and makes the surface of whiskers be rougher. Furthermore, the absorption of element C on the surface of MH whiskers increases, and the diffraction intensity of C 1 s spectra increases; thus, the compatibility of whiskers in the organic phase can be improved significantly. Lastly, the surface molecular model of MH whiskers modified via in situ copolymerization of n-butyl acrylate and maleic anhydride is established.

关键词： Magnesium hydroxide whiskers n-Butyl acrylate Maleic anhydride In situ copolymerization Surface molecular model

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Perovskite Single Crystals: Synthesis, Properties, and Applications

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Journal of Electronic Science and Technology 2021年第2期19卷 119-143页

作者： Shan-Shan Rong M.Bilal Faheem yan-bo li Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054

Perovskite single crystals have gained enormous attention in recent years due to their facile synthesis and excellent optoelectronic properties including the long carrier diffusion length,high carrier mobility,low trap density,and tunable absorption edge ranging from ultra-violet(UV)to near-infrared(NIR),which offer potential for applications in solar cells,photodetectors(PDs),lasers,*** this review,we summarized the synthesis,properties,and applications of organic-inorganic mixed and all-inorganic perovskite single crystals,particularly those through the solution synthesis *** towards the crystal growth and stability with future perspectives were also briefly described at the end of this paper.

关键词： Laser perovskite photodetector(PD) single crystal solar cell

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Preheat Compression Molding for Polyetherketoneketone: Effect of Molecular Mobility

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Chinese Journal of Polymer Science 2022年第2期40卷 175-184页

作者： Xiao-Hua Zhang Meng-Xiao Jiao Xin Wang bo-Lan li Feng Zhang yan-bo li Jing-Na Zhao He-Hua Jin Yu yang Key Laboratory of Textile Science&Technology(Ministry of Education) College of Textilesand Innovation Center for Textile Science and TechnologyDonghua UniversityShanghai201620China Advanced Materials Division Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Key Laboratory of Carbon Materials National Engineering Laboratory for Carbon Fiber TechnologyInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China

Polyetherketoneketone(PEKK)is a new evolving polymeric material,and is considered as another important member of the polyaryletherketone(PAEK)family in addition to polyetheretherketone(PEEK).Hot compression molding can be used to compact and consolidate the PEKK products,where the temperature and pressure play key roles to affect the molecular mobility,entanglement and crystallization,and thus the mechanical properties of *** this study,a preheating treatment was introduced in the compression molding,and it is found that such preheating is very essential to avoid the formation of crystal FormⅡ,based on the increased chain *** dynamics simulations revealed that the molecular mobility is always suppressed when a compression is ***,by increasing the entanglement via the preheating and maintaining such entanglement in the consequent compression molding,strong and tough PEKK materials were obtained,with a negligible fraction of crystal FormⅡ.

关键词： Polyetherketoneketone Molecular mobility Compression molding Mechanical properties

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Evaluation of standard liver volume formulae for Chinese adults

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World Journal of Gastroenterology 2009年第32期15卷 4062-4066页

作者： Zheng-Rong Shi Lu-Nan yan bo li Tian-Fu Wen liver Transplantation Division Department of Surgery West China Hospital Sichuan University Chengdu 610041 Sichuan Province China

AIM:To evaluate different standard liver volume (SLV) formula and verify the applicability of the formulae for Chinese ***: Data from 70 cases of living donor liver transplantation (LDLT) performed at our transplantation centers between January 2008 and April 2009 were analyzed. SLV was estimated using our recently reported formula [the Chengdu formula: SLV (mL)=11.5×body weight (kg) + 334] and other reported formulae used for Chinese adults. Actual intraoperative liver volumes were obtained from a review of the patients' medical ***: The actual right liver volume was not significantly different from the estimated right liver volume determined by the Chengdu formula, but was significantly smaller than estimates using the Heinemann, Urata, Vauthey, and Lee formulae (Pliable by its application in LDLT.

关键词： Standard liver volume living donor livertransplantation Chinese adult liver volume formula

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Copper(Ⅰ)-catalyzed diastereodivergent construction of vicinal P-chiral and C-chiral centers facilitated by dual“soft-soft”interaction

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Chinese Chemical Letters 2024年第7期35卷 264-270页

作者： yan-bo li Yi li liang Yin CAS Key Laboratory of Synthetic Chemistry of Natural Substances Centre for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

A copper(Ⅰ)-catalyzed diastereodivergent addition of phosphinothioates(HP(S)ROR')toα,β-unsaturated thioamides is disclosed,which constructs vicinal P-chiral and C-chiral centers in generally high diastereoand *** this reaction,the kinetic resolution of HP(S)ROR'occurs,which affords(R)-HP(S)Ph OMe in high enantioselectivity in the addition with(R,R)-Ph-BPE as the *** is found through control experiment that dual“soft-soft”interaction,indicated by both1H and31P NMR experiments,is indispensable in the present *** first“soft-soft”interaction between copper(Ⅰ)catalyst and HP(S)ROR'enables facile deprotonation to generate nucleophilic[Cu]-SPROR'*** second one between the[Cu]-SPROR'species andα,β-unsaturated thioamides facilitated the nucleophilic ***,both Michael adducts and(R)-HP(S)PhOMe are easily converted to synthetically useful compounds.

关键词： Copper catalysis Asymmetric catalysis Diastereodivergent synthesis P-Chirality "Soft-soft"interaction

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Plasma-Enhanced Atomic Layer Deposition of Amorphous Ga_(2)O_(3) for Solar-Blind Photodetection

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Journal of Electronic Science and Technology 2022年第4期20卷 331-344页

作者： Ze-Yu Fan Min-Ji yang bo-Yu Fan Andraz Mavric Nadiia Pastukhova Matjaz Valant bo-lin li Kuang Feng Dong-liang liu Guang-Wei Deng Qiang Zhou yan-bo li Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054 Materials Research Laboratory University of Nova GoricaNova Gorica SI-5000 yangtza Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001

Wide-bandgap gallium oxide(Ga_(2)O_(3))is one of the most promising semiconductor materials for solar-blind(200 nm to 280 nm)*** its amorphous form,amorphous gallium oxide(a-Ga_(2)O_(3))maintains its intrinsic optoelectronic properties while can be prepared at a low growth temperature,thus it is compatible with Si integrated circuits(ICs)***,the a-Ga_(2)O_(3) film is directly deposited on pre-fabricated Au interdigital electrodes by plasma enhanced atomic layer deposition(PE-ALD)at a growth temperature of 250°*** stoichiometric a-Ga_(2)O_(3) thin film with a low defect density is achieved owing to the mild PE-ALD *** a result,the fabricated Au/a-Ga_(2)O_(3)/Au photodetector shows a fast time response,high responsivity,and excellent wavelength selectivity for solar-blind ***,an ultra-thin MgO layer is deposited by PE-ALD to passivate the Au/a-Ga_(2)O_(3)/Au interface,resulting in the responsivity of 788 A/W(under 254 nm at 10 V),a 250-nm-to-400-nm rejection ratio of 9.2×10^(3),and the rise time and the decay time of 32 ms and 6 ms,*** results demonstrate that the a-Ga_(2)O_(3) film grown by PE-ALD is a promising candidate for high-performance solar-blind photodetection and potentially can be integrated with Si ICs for commercial production.

关键词： Amorphous gallium oxide(a-Ga_(2)O_(3)) passivation layer plasma enhanced atomic layer deposition(PE-ALD) responsivity solar-blind photodetector

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Perfect invisibility concentrator with simplified material parameters

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Frontiers of physics 2018年第5期13卷 3-8页

作者： Meng-Yin Zhou lin Xu Lu-Chan Zhang Jiang Wu yan-bo li Huan-yang Chen Institute of Electromagnetics and Acoustics and Department of Electronic Science Xiamen University Xiamen 361005 China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China

We present a series of invisibility concentrators with simplified material parameters beyond trans- formation optics. One of them can achieve the perfect invisible effect at frequencies of Fabry-Perot resonances, while others have very small scattering. The required materials are feasible in practice. Analytical calculations and numerical simulations confirm the functionalities of these devices.

关键词： perfect-invisibility concentrator simplified material parameters Fabry-Perot resonances scattering cross section

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Concrescence of maxillary second molar and impacted third molar:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10286-10292页

作者： Jun Su li-Mei Shao lian-Cheng Wang li-Jia He Ya-liu Pu yan-bo li Wen-Yun Zhang Department of Stomatology 920th Hospital of the Joint Logistics Support ForceKunming 650032Yunnan ProvinceChina

BACKGROUND Morphological anomalies of teeth,including talon cusp,dens evaginatus,gemination,fusion,concrescence,root dilaceration,and taurodontism,always involve changes in the enamel,cementum and *** concrescent teeth through routine clinical examination alone is difficult,and most cases of concrescence are found accidentally during extraction.A definite preoperative diagnosis of concrescence would contribute to a better treatment plan and fewer undesirable complications CASE SUMMARY A 47-year-old woman who complained of left maxillary first molar loss for half a year presented to our department seeking treatment by dental implant *** radiography and cone-beam computed tomography(CBCT)showed an unclear boundary between the distal root of the second molar and the mesial root of the third *** teeth were extracted under local anesthesia,and a definite diagnosis of concrescence was made by histopathological *** CBCT is a useful tool for diagnosing and planning the management of tooth concrescence and may be beneficial for reducing unnecessary complications.

关键词： Concrescence Impacted tooth Concentrate growth factor Maxillary third molar Tooth anomalies Cone-beam computed tomography Case report

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Cholesterol paradox in the community-living old adults:is higher better?

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Journal of Geriatric Cardiology 2023年第12期20卷 837-844页

作者： Sheng-Shu WANG Shan-Shan yanG Chun-Jiang PAN Jian-Hua WANG Hao-Wei li Shi-Min CHEN Jun-Kai HAO Xue-Hang li Rong-Rong li bo-yan li Jun-Han yanG Yue-Ting SHI Huai-Hao li Ying-Hui BAO Wen-Chang WANG Sheng-yan DU Yao HE Chun-lin li Miao liU Institute of Geriatrics Beijing Key Laboratory of Aging and GeriatricsNational Clinical Research Center for Geriatrics Diseasesthe Second Medical CenterChinese PLA General HospitalBeijingChina Department of Disease Prevention and Control the First Medical CenterChinese PLA General HospitalBeijingChina Department of Disease Control and Prevention Chinese PLA Strategic Support Force Characteristic Medical CenterBeijingChina Department of Health Service the Second Medical CenterChinese PLA General HospitalBeijingChina Department of Epidemiology State Key Laboratory of Kidney DiseasesChinese PLA General HospitalBeijingChina Institute of Endocrinology the Second Medical CenterChinese PLA General HospitalBeijingChina Department of anti-NBC Medicine Chinese PLA Medical SchoolChinese PLA General HospitalBeijingChina

OBJECTIVE To evaluate the associations of lipid indicators and mortality in Beijing Elderly Comprehensive Health Cohort *** A prospective cohort was conducted based on Beijing Elderly Comprehensive Health Cohort Study with 4499 com-munity older *** the baseline survey,the last follow-up was March 31,2021 with an average 8.13 years of *** proportional hazard model was used to estimate the hazard ratios(HR)with 95%CI for cardiovascular disease(CVD)death and all-cause death in associations with baseline lipid *** A total of 4499 participants were recruited,and the mean levels of uric acid,body mass index,systolic blood pres-sure,diastolic blood pressure,fasting plasma glucose,total cholesterol(TC),triglyceride,and low-density lipoprotein cholesterol(LDL-C)showed an upward trend with the increasing remnant cholesterol(RC)quarters(Ptrendlipoprotein cholesterol(HDL-C).During the total 36,596 person-years follow-up,the CVD mortal-ity and all-cause mortality during an average 8.13 years of follow-up was 3.87%(95%CI:3.30%-4.43%)and 14.83%(95%CI:13.79%-15.86%)with 174 CVD death participants and 667 all-cause death *** adjusting for confounders,the higher level of TC(HR=0.854,95%CI:0.730-0.997),LDL-C(HR=0.817,95%CI:0.680-0.982)and HDL-C(HR=0.443,95%CI:0.271-0.724)were associated with lower risk of CVD death,and the higher level of HDL-C(HR=0.637,95%CI:0.501-0.810)were associated with lower risk of all-cause *** higher level of RC(HR=1.276,95%CI:1.010-1.613)increase the risk of CVD ***-pared with the normal lipid group,TC≥6.20 mmol/L group and LDL-C≥4.10 mmol/L group were no longer associated with lower risk of CVD death,while RC≥0.80 mmol/L group was still associated with higher risk of CVD *** normal lipid gr-oup,the higher levels of TC,LDL-C and HDL-C were related with lower CVD *** In community older adults,higher levels of TC

关键词： mortality cholesterol hazard

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Efficacy of physiological seawater nasal irrigation for the treatment of children with SARS-CoV-2 Omicron BA.2 variant infection:a randomized controlled trial

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World Journal of Pediatrics 2024年第5期20卷 461-469页

作者： Ji-Lei lin Fen Zhang yan-bo li Shu-Hua Yuan Jin-Hong Wu Jing Zhang Lei Zhang Yi He Jie Chen Yong Yin Department of Respiratory Medicine Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong University1678 Dongfang RoadPudong DistrictShanghaiChina University of British Columbia VancouverCanada Information Technology Department Shanghai Children’s Medical Center National Children’s Medical CenterSchool of MedicineShanghai Jiao Tong University1678 Dongfang RoadPudong DistrictShanghaiChina Department of Otorhinolaryngology Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong University1678 Dongfang RoadPudong DistrictShanghaiChina Department of Respiratory Medicine Sanya Women and Children’s Hospital Affiliated to Hainan Medical CollegeHainan Branch of Shanghai Children’s Medical CenterSanyaChina Department of Respiratory Medicine Linyi Maternal and Child Healthcare HospitalLinyiChina Shanghai Children’s Medical Center Pediatric Medical Complex(Pudong) ShanghaiChina Pediatric AI Clinical Application and Research Center Shanghai Children’s Medical CenterShanghaiChina

Background Saline nasal irrigation is an effective therapy for relieving common cold *** study aimed to investigate and explore the efficacy of physiological seawater nasal irrigation(PSNI)on children with mild and asymptomatic infection with *** This randomized controlled trial was conducted in Shanghai,China,and 403 children with mild and asymptomatic infection with Omicron were *** children were allocated into the PSNI group and the control *** primary outcome was the duration of viral shedding(DVS),and the secondary outcome was the change in clinical *** The median age of all participants was 5.59(6.26)years *** DVS was significantly shorter in the PSNI group[2.40(1.13)]than in the control group[3.09(2.14)](P=0.014).The multivariable Cox regression model also showed that patients in the PSNI group had an increased probability of shorter DVS compared with patients in the control group[hazard ratio(HR),1.27;95%confidence interval(CI),1.04–1.55;P=0.017].Subgroup analysis suggested that the DVS of patients without full vaccination was significantly reduced in the PSNI *** proportions of runny nose and stuffy nose were apparently reduced in the first three days in the PSNI group or the control group,but there was no evidence showing that PSNI contributes to the benefit compared with the control *** PSNI can reduce the DVS of patients with mild and asymptomatic infection with SARS-CoV-2 Omicron BA.2 variant.

关键词： Children Duration of viral shedding Omicron Physiological seawater nasal irrigation

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