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Design and achieving of multicolor upconversion emission based on rare-earth doped tellurite glasses

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Journal of Rare Earths 2014年第5期32卷 394-398页

作者：邢明铭马运北罗昔贤付姚姜涛汪红段小龙 Physics Department Dalian Maritime University

yD3＋/Tm3＋ co-doped and yD3＋/Ho3＋/Tm3＋ tri-doped tellurite glasses were synthesized by fusing the mixture of TeO2, PbF2, AIF3, BaF2, Yb2O3, Tm203 and H0203 in a cortmdum crucible at 850 ℃ for 20 min. The synthesized glasses were characterized by upconversion emission spectra under the excitation of 980 nm laser, and the emission colors were investigated according to the CIE-1931 standards. The results indicated that yD3＋/Tm3＋ co-doped tellurite glass exhibited blue upconversion emission with favor- able color coordinates of （0.20, 0.07）. Yb3＋, HO3＋ and Tm3＋ tri-doped tellurite glasses presented white upconversion luminescence under a single 980 nm laser excitation. Moreover, a very wide range of emission colors could be tuned by altering Ho3＋ concentration. Combining the contribution of adjusting Ho3＋ concentration and pump power, near equal energy white light was obtained.

关键词： tellurite glass upconversion luminescence multicolor emission rare earths

Heparanase inhibition leads to improvement in patients with acute gastrointestinal injuries induced by sepsis

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世界胃肠病学杂志:英文版 2023年第35期29卷 5154-5165页

作者： Ting-Ting Chen Jia-Jun Lv Ling Chen Min Li Li-Ping Liu The First Clinical Medical School of Lanzhou University Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Department of Emergency Critical Care Medicine The First Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND Patients with sepsis are at high risk for acute gastrointestinal injury(AGI),but the diagnosis and treatment of AGI due to sepsis are ***(HPA)plays an important role in septic AGI(S-AGI),but its specific mechanism is not completely understood,and few clinical reports are *** To explore the effect and mechanism of HPA inhibition in S-AGI *** In our prospective clinical trial,48 patients with S-AGI were randomly assigned to a control group to receive conventional treatment,whereas 47 patients were randomly assigned to an intervention group to receive conventional treatment combined with low molecular weight *** grade,sequential organ failure assessment score,acute physiology and chronic health evaluation II score,D-dimer,activated partial thromboplastin time(APTT),anti-Xa factor,interleukin-6,tumour necrosis factor-α,HPA,syndecan-1(SDC-1),LC3B(autophagy marker),intestinal fatty acid binding protein,D-lactate,motilin,gastrin,CD4/CD8,length of intensive care unit(ICU)stay,length of hospital stay and 28-d survival on the 1^(st),3^(rd) and 7^(th) d after treatment were *** between HPA and AGI grading as well as LC3B were *** operator characteristic(ROC)curves were generated to evaluate the diagnostic value of HPA,intestinal fatty acid binding protein and D-lactate in *** Serum HPA and SCD-1 levels were significantly reduced in the intervention group compared with the control group(P<0.05).In addition,intestinal fatty acid-binding protein,D-lactate,AGI grade,motilin,and gastrin levels and sequential organ failure assessment score were significantly decreased(P<0.05)in the intervention ***,LC3B,APTT,anti-Xa factor,and CD4/CD8 were significantly increased(P<0.05)in the intervention *** significant differences in interleukin-6,tumour necrosis factor-α,d-dimer,acute physiology and chronic health evaluation II score,length of ICU stay,length of hospital stay,

关键词： Sepsis Acute gastrointestinal injury Heparanase Autophagy

The allelic distribution and variation analysis of the NAM-B1 gene in Chinese wheat cultivars

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Journal of Integrative Agriculture 2017年第6期16卷 1294-1303页

作者： CHEN Xue-yan SONG Guo-qi ZHANG Shu-juan LI Yu-lian GAO Jie Islam Shahidul MA Wu-jun LI Gen-ying JI Wan-quan College of Agronomy Northwest A&F University Yangling 712100 P.R.China Crop Research Institute Shandong Academy of Agricultural Sciences/Key Laboratory of Wheat Biology & Genetic Improvement on North Yellow & Huai River Valley Ministry of Agriculture/National Engineering Laboratory for Wheat & Maize Jinan 250100 P. R. China Australia-China Centre for Wheat Improvement School of Veterinary and Life Sciences Murdoch University Perth WA 6150 Australia Australia Export Grains Innovation Centre 3 Baron-Hay Court Perth WA 6151 Australia

The NAM-B1 gene is a member of the NAC（NAM,ATAF,and CUC）transcription factor family and plays an important role in regulating wheat grain protein content（GPC）.The ancestral NAM-B1 allele has been discovered in many tetraploid wild emmer（Triticum turgidum ***）accessions and few domesticated emmer accessions（*** ***）,however,it is rarely found in hexaploid bread wheat（Triticum aestivum L.）.There are no systematic reports on the distribution of NAM-B1 alleles in Chinese wheat *** this study,the NAM-B1 alleles in 218 Chinese cultivars were *** cultivars were collected from five major wheat regions（12 provinces）,covering most of the winter wheat growing regions in *** results showed that the NAM-B1 gene is present in 53（24.3%）cultivars and absent in the remaining 165（75.7%）*** analysis revealed that in contrast to the wild-type allele,the NAM-B1 gene in Chinese wheat cultivars contained a 1-bp insertion in the coding *** caused a frame-shift mutation and introduced a stop codon in the middle of the gene,rendering it *** were detected in DNA sequences of 21cultivars among these 53 ***,cD NA sequence analysis suggested that these variations in the exon region were not able to restore NAM-B1 gene（1-bp insertion）***,exploring the distribution of NAM-B1 gene variations（1-bp insertion and deletion）can provide some information for improving the quality of winter wheat in China and other countries.

关键词： NAM-B1 allele variations Chinese wheat cultivars grain protein content

Enhanced degradation of organic contaminants by Fe(Ⅲ)/peroxymonosulfate process with L-cysteine

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Chinese Chemical Letters 2022年第4期33卷 2125-2128页

作者： Chengdu Qi Yanni Wen Yijie Zhao Yinhao Dai Yanping Li Chenmin Xu Shaogui Yang Huan He School of Environment Nanjing Normal UniversityNanjing 210023China

The difficulty in Fe(Ⅲ)/Fe(Ⅱ) conversion in the Fe(Ⅲ)/peroxymonosulfate(PMS) process limits its efficiency and ***,L-cysteine(Cys),a green natural organic ligand with reducing capability,was innovatively introduced into Fe(Ⅲ)/PMS to construct an excellent Cys/Fe(Ⅲ)/PMS *** Cys/Fe(Ⅲ)/PMS process,at room temperature,can degrade a variety of organic contaminants,including dyes,phenolic compounds,and *** subsequent experiments with acid orange 7(A07),the AO7 degradation efficiency followed pseudo-first-order kinetic which exhibited an initial "fast stage" and a second "slow stage".The rate constant values ranged depending on the initial Cys,Fe(Ⅲ),PMS,and AO7 concentrations,reaction temperature,and pH *** addition,the presence of Cl^(-),NO_(3)^(-),and SO_(4)^(2-) had negligible impact while HCO_(3)^(-) and humic acid inhibited the degradation of ***,radical scavenger experiments and methyl phenyl sulfoxide(PMSO) transformation assay indicated that sulfate radical,hydroxyl radical,and ferryl ion(Fe(Ⅳ)) were the dominant reactive species involved in the Cys/Fe(Ⅲ)/PMS ***,based on the results of gas chromatography-mass spectrometry,several AO7 degradation pathways,including N=N cleavage,hydroxylation,and ring opening were *** study provided a new insight to improve the efficiency of Fe(Ⅲ)/PMS process by accelerating Fe(Ⅲ)/Fe(Ⅱ)cycle with Cys.

关键词： Advanced oxidation process Peroxymonosulfate Fe(II)recycle L-cysteine Reactive species Degradation pathway

显式溶剂模型模拟嵌段共聚物在纳米微滴中的图案化结构(英文)

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物理化学学报 2012年第4期28卷 978-984页

作者：伍绍贵孙婷周萍周俊四川师范大学化学与材料科学学院成都610068

采用耗散粒子动力学(DPD)方法研究了嵌段共聚物在纳米微滴中的相分离行为.模拟是将共聚物纳米微滴置于溶剂环境中进行自发相分离,从而形成一些图案化结构.由于是受限体系,所形成的结构和在溶液或熔融体中形成的相分离结构有所差异,这些... 详细信息

采用耗散粒子动力学(DPD)方法研究了嵌段共聚物在纳米微滴中的相分离行为.模拟是将共聚物纳米微滴置于溶剂环境中进行自发相分离,从而形成一些图案化结构.由于是受限体系,所形成的结构和在溶液或熔融体中形成的相分离结构有所差异,这些结构的形成与亲/疏溶剂嵌段比例(RH/T)有关系.随着亲/疏溶剂嵌段比例的增加,依次形成了枣糕球体、排球状相、多层囊泡(洋葱相)、笼状相、纳米杆状相和分散胶束等结构.我们对洋葱相的形成过程进行了详细的描述.溶剂粒子的集群属性有助于更加深入地了解洋葱相的结构衍化.采用密度曲线分析了洋葱相的结构.在较高的亲/疏溶剂嵌段的比例条件下,嵌段共聚物主要表现为亲溶剂性,通过吸收大量的溶剂溶胀形成疏松结构或瓦解形成分散的胶束悬浮在溶剂中.本文模拟结果与理论或实验结果基本吻合.

关键词：耗散粒子动力学洋葱相微相分离

N-Heterocyclic Carbene Organocatalysis: Activation Modes and Typical Reactive Intermediates

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Chinese Journal of Chemistry 2020年第10期38卷 1167-1202页

作者： Xingkuan Chen Hongling Wang Zhichao Jin Yonggui Robin Chi Department of Chemistry Jinan UniversityGuangzhouGuangdong 510632China Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural BioengineeringMinisry of EducationGuizhou UniversityHuaxi DistrictGuiyangGuizhou 550025China Division of Chemistry&Biological Chemistr School of Physical&Mathematical SciencesNanyang Technological UniversitySingopore 637371Singapore

N-Heterocyclic carbene(NHC)organocatalysis has been developed as an important approach in modern organic *** activation modes within NHC organocatalysis have been established with countless transformations being realized in both efficient and selective *** would like to provide an overview on the key progresses achieved within this field in the past two *** numerous excellent reviews have been documented within this area,we will mainly focus on the scientific development of this research field based on the basic reaction modes and typical reaction intermediates.

关键词： synthesis. catalysis Heterocyclic

A porous high-entropy alloy for high-efficient oxygen evolution reaction

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Rare Metals 2023年第7期42卷 2174-2181页

作者： Wei Wang Yun-Zhuo Lu Xing Lu School of Materials Science and Engineering Dalian Jiaotong UniversityDalian116028China

Oxygen evolution reaction(OER)plays a crucial role in regulating the process of hydrogen production from water splitting where an expeditious,stable and low-cost electrocatalyst is urgently *** employing a facile strategy of selective phase dissolution,this dissertation attempts to illuminate the successful preparation of a porous AlCoCrFeNi high-entropy alloy(SPD-48 h).

关键词： alloy entropy evolution

Reduced SARS-CoV-2 infection risk is associated with the use of Seven-Flavor Herb Tea:A multi-center observational study in Shanghai,China

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Journal of Integrative Medicine 2023年第4期21卷 369-376页

作者： Shun-xian Zhang Xiao-xu Chen Yong Zheng Bing-hua Cai Wei Shi Ming Ru Hui Li Dan-dan Zhang Yu Tian Yue-lai Chen Clinical Research Center Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Medical Affairs Department Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Medical Affairs Department of Minhang District Health Committee Shanghai 201199China Medical Affairs Department of Fengxian District Health Committee Shanghai 201499China Medical Affairs Department of Jinshan District Health Committee Shanghai 200540China Medical Affairs Department of Xuhui District Health Committee Shanghai 200030China Medical Affairs Department of Changning District Health Committee Shanghai 200050China Medical Affairs Department Jinshan TCM-Integrated HospitalShanghai 201501China Sleep Medicine Center Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China

Objective:Omicron,a severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)variant,is responsible for numerous infections in *** study investigates the association between the use of Seven-Flavor Herb Tea(SFHT)and the risk of SARS-CoV-2 infection to develop precise and differentiated strategies for control of the coronavirus disease 2019(COVID-19).Methods:This case-control study was conducted at shelter hospitals and quarantine hotels in China.A total of 5348 laboratory-confirmed COVID-19 patients were enrolled between April 1 and May 31,2022,while 2190 uninfected individuals served as healthy *** questionnaires were used to collect data on demographics,underlying diseases,vaccination status,and use of *** were propensity-score-matched using 1:1 nearest-neighbor matching of the logit of the propensity ***,a conditional logistic regression model was used for data ***:Overall,7538 eligible subjects were recruited,with an average age of[45.54±16.94]*** age of COVID-19 patients was significantly higher than that of uninfected individuals([48.25±17.48]years vs[38.92±13.41]years;t=22.437,P<0.001).A total of 2190 COVID-19 cases were matched with uninfected individuals at a 1:1 *** use of SFHT(odds ratio=0.753,95%confidence interval:0.692,0.820)was associated with a lower risk of SARS-CoV-2 infection compared to untreated ***:Our findings suggest that taking SFHT reduces the risk of SARS-CoV-2 *** is a useful study in the larger picture of COVID-19 management,but data from large-sample multi-center,randomized clinical trial are warranted to confirm the finding.

关键词： COVID-19 SARS-CoV-2 Seven-Flavor Herb Tea

Layered bismuth oxide/bismuth sulfide supported on carrageenan derived carbon for efficient carbon dioxide electroreduction to formate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 116-123页

作者： Xiangzhao Hu Junjie Sun Wanzhen Zheng Sixing Zheng Yu Xie Xiang Gao Bin Yang Zhongjian Li Lecheng Lei Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China Department of Material Chemistry Nanchang Hangkong UniversityNanchang 330063China School of Biological and Chemical Engineering Ningbo Technology UniversityNingbo 315100China

Electrochemical reduction of carbon dioxide(CO_(2)ER)into formate plays a crucial role in CO_(2)conversion and ***,it still faces the problems of high overpotential and poor catalytic ***,we report a hybrid CO_(2)ER electrocatalyst composed of layered bismuth sulfide(Bi_(2)S_(3))and bismuth oxide(Bi_(2)O_(3))supported on carrageenan derived carbon(Bi-CDC)prepared by a combined pyrolysis with hydrothermal *** such 3 D hybrid,layered Bi_(2)O_(3)and Bi_(2)S_(3)are uniformly grown on nanocarbon *** from strong synergistic effect between Bi_(2)O_(3)/Bi_(2)S_(3)and nanocarbon,Bi-CDC-1:2 displays a high Faradic efficiency(FE)of>80%for formate production in the range of-0.9 V to-1.1 V with the maximum formate FE of 85.6%and current density of 14.1 mA·cm^(-2) at-1.0 ***,a positive onset potential of-0.5 V,a low Tafel slope of 112.38 mV·dec^(-1),and a slight performance loss during long-term CO_(2)ER tests are observed on Bi-CDC-1:*** results shows that the better CO_(2)ER performance of Bi-CDC-1:2 than that of Bi_(2)O_(3)can be attributed to the strong interfacial interactions between nanocarbons and Bi_(2)O_(3)/Bi_(2)S_(3).In situ ATR-FTIR measurements reveal that the rate-determining step in the CO_(2)ER is the formation of HCOO^(*) *** with carbon support,Bi-CDC-1:2 can promote the production of HCOO^(*) intermediate and thus promoting CO_(2)ER kinetic.

关键词： Nanomaterials Catalyst Selectivity Bi_(2)S_(3)/Bi_(2)O_(3) CO_(2)electroreduction Formate