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Insights into photocatalytic mechanism over a novel Cu_(2)WS_(4)/MoS_(2) S-scheme heterojunction

Rare Metals 2024年第7期43卷 3118-3133页

作者： Wei Zhao ji-Hui Cao Jun-jie Liao Yun Liu Xiao-Jun zeng Jun-Yu Shen Xue-Kun Hong Yang Guo He-Hua zeng Ya-Zi Liu School of Materials Engineering Jiangsu Key Laboratory of Advanced Functional MaterialsSchool of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu215500China School of Chemistry and Chemical Engineering Changji UniversityChangji 831100China State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Ministry of Ecology and EnvironmentNanjing Institute of Environmental SciencesNanjing 210023China School of Environment Jiangsu Engineering Lab of Water and Soil Eco-RemediationNanjing Normal UniversityNanjing 210023China Department of Chemical Engineering Curtin UniversityPerthWA6845Australia

A novel efficient Cu_(2)WS_(4)/MoS_(2) step-scheme(S-scheme)heterojunction photocatalyst was constructed for the first time and applied in the removal of environmental *** the as-prepared photocatalysts,the Cu_(2)WS_(4)/MoS_(2)-8%heterojunc tion photoc atalyst demonstrates the optimal photocatalytic performance,with the catalytic oxidation efficiency of tetracycline(TC)and the catalytic reduction efficiency of Cr^(6+)reaching 93.3%and 82.1%,*** excellent catalytic properties of Cu_(2)WS_(4)/MoS_(2) heterojunction photocatalysts are attributed to the effective separation pathways of charges and the presence of S-scheme heterojunctions,together with stronger redox *** is speculated that the photogenerated carrier migration path of the Cu_(2)WS_(4)/MoS_(2) catalyst follows the typical S-scheme photocatalytic mechanism,which is verified by the in-depth experimental study and simulated calculations including the electron paramagnetic resonance(EPR)analysis,free radical quenching experiments,charge density distribution,and simulated built-in electric field formation at the interface,which acts as driving force to promote the separation of photoinduced electrons and ***,the photocatalytic mechanism of S-scheme photogenerated carrier migration for the Cu_(2)WS_(4)/MoS_(2) catalyst is revealed based on the systematic experimental techniques and simulated calculations,accounting for its superior photocatalytic oxidation and reduction *** study provides inspiring implications to develop high-efficient S-scheme photocatalytic systems for versatile applications in solarenergy conversion.

关键词： Cu_(2)WS_(4)/MoS_(2) S-scheme Heterojunction Photocatalysis

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Identification of QTLs for Rice Cold Tolerance at Plumule and 3-Leaf-Seedling Stages by Using QTLNetwork Software

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Rice science 2010年第4期17卷 282-287页

作者： ji Zhi-juan zeng Yu-xiang zeng Da-li MA Liang-yong LI Xi-ming LIU Bing-xin YANG Chang-deng State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China

A doubled haploid （DH） population consisted of 120 lines, derived from a cross between an indica vadety, TN1, and a japonica variety, Chunjiang 06, was used to identify QTLs controlling rice cold tolerance at the plumule and 3-leaf-seedling stages by using the QTLNetwork software. The percentages of normal plumules after 4~C treatments for 7 d, 9 d, 11 d, and 14 d, as well as the cold stress tolerance index （CSTI） and the withering index （WI） of rice seedling were investigated. A total of five single-effect QTLs, each for percentages of normal plumules after 4℃treatments for 9 d, 11 d and 14 d, and CSTI and WI, respectively were identified. The QTLs for the percentages of normal plumules after low temperature treatments for g d, 11 d and 14 d were on chromosomes 4, 2 and 11, accounting for 14.1%, 17.3% and 21.5% of the phenotypic variation, respectively. QTLs for CSTI and WI were on chromosomes 10 and 1, respectively. Two pairs of epistatic loci were identified, but none of the epistatic loci involved the single-effect QTLs. The RM528-RM340 interval on chromosome 6 interacted with the RM278-RM3919B interval on chromosome 9 for CSTI, and the epistatic interaction accounted for 17.7% of the phenotypic variation. A pair of epistatic loci was identified for WI, the RM246-RM5461 interval on chromosome 1 interacted with the ISA-RM447 interval on chromosome 8, which accounted for 22.6% of the phenotypic variation.

关键词： rice cold tolerance quantitative trait loci plumule QTLNetwork software

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Effect of micro-Al_(2)O_(3) powders on oxidation and corrosion behaviors of low-carbon MgO-C refractories

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Journal of Iron and Steel Research International 2024年第6期31卷 1522-1534页

作者： Yang Chen zeng-yi Li Hao-bo Tan Yu-ran Fu Jun Ding Cheng-ji Deng Chao Yu School of Materials Science and Engineering Hunan Institute of TechnologyHengyang 421002HunanChina The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

To solve the problem of poor high-temperature service performance caused by low carbonization of MgO-C refractories,low-carbon MgO–C refractories with excellent thermal shock,oxidation and corrosion resistances were successfully designed by using SiC whiskers as reinforcing phases and introducing micro-Al_(2)O_(3) powders as *** results indicated that the addition of micro-Al_(2)O_(3) powders optimized the internal structure of the material,like the columnar β-Si_(3)N_(4) with a stepped distribution and the mosaic structure formed between granular and flaky Mg_(2)SiO_(4),which synergistically strengthened and toughened the material and gave the material excellent mechanical properties and thermal shock ***,the cold modulus of rupture and cold crushing strength after thermal shock were increased by 4.1 and 20.3 MPa,***,the addition of micro-Al_(2)O_(3) powders promoted the formation of fine particles of Mg_(2)SiO_(4),MgAl_(2)O_(4) and MgO,as well as a dense protective layer of Mg_(2)SiO_(4) in the material under high-temperature ***,spinel and high-temperature solid solution were formed in the corrosion *** oxidation and corrosion resistances were greatly improved by 41%and 15%,respectively.

关键词： Low-carbon MgO-C refractory Oxidation resistance Corrosion resistance Thermal shock resistance Micro-Al_(2)O_(3)powder

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高山罗汉果套种辣椒高效栽培技术要点

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南方园艺 2024年第2期35卷 23-26页

作者：曾纪云唐学军于琴芝廖阳君管欢高立波汤雪莲龙胜各族自治县伟江乡农业农村综合服务中心广西龙胜541710 桂林市经济作物技术推广站广西桂林541100

通过探索罗汉果套种辣椒的立体栽培模式,不仅可以充分利用时间空间,也可以充分利用土地、水、气、热等自然资源,提高耕地的复种指数,保障“菜篮子”产品供应,增加经济效益,有效助推罗汉果和辣椒产业健康发展和乡村建设。

关键词：罗汉果辣椒套种栽培技术

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Translocation of a fish spike from the pharynx to the thyroid gland:A case report

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World Journal of Clinical Cases 2024年第7期12卷 1365-1370页

作者： Deng Li Wan-Ting zeng jian-Guo jiang ji-Chuan Chen Department of Otolaryngology Head and Neck Surgery Army Medical Center of PLAChongqing 400042China

BACKGROUND A fish spike stuck in the throat is a common ear,nose,and throat(ENT)***,it is very rare for a fish spike to reach the thyroid tissue through the throat,which is very dangerous and can lead to pharyngeal fistula,cervical abscess,mediastinal abscess,and thyroid *** and timely management can help reduce complications,especially in elderly *** SUMMARY In the case presented here,the causative factor was dentures,but improper management aggravated the *** the case presented here,an elderly woman with a history of accidentally swallowing fish bones for 20 d had a sensation of foreign bodies in her ***,computed tomography(CT)of the neck showed that the left side of the thyroid gland had a dense shadow in the form of a *** If a fishbone foreign body is not visible during endoscopic examination but the patient has significant symptoms,the surgeon should be aware that the fishbone may be lodged in the *** avoid a misdiagnosis,ultrasound,CT,and other tests can be used to clarify the diagnosis.T The first step in treating a fish bone in the thyroid gland is to determine the position of the foreign body and the extent of the infection,and to develop a personalized surgical plan for its *** the same time,scientific information should be made available to the general public so that people know that if a fish bone is accidentally lodged,they should not force it to be swallowed or be spit out by inducing vomiting,which are incorrect methods and may aggravate the condition or even cause it to migrate outside the cavity,leading to serious complications,as in this reported case.

关键词： Fish spike Thyroid Pharynx Foreign body migration Case report

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Newly Detected Transmission of bla_(KPC-2) by Outer Membrane Vesicles in Klebsiella Pneumoniae

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Current Medical Science 2023年第1期43卷 80-85页

作者： Liu-jun CHEN Xiao-peng jiNG Dong-li MENG Ting-ting WU Huan ZHOU Rui-ling SUN Xiao-chun MIN Rong LIU ji zeng Department of Clinical Laboratory Wuhan Fourth HospitalWuhan430030China Key Laboratory of Ministry of Education for Neurological Disorders Department of PathophysiologySchool of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

Objective The prevalence of carbapenem-resistant Klebsiella pneumoniae(CR-KP)is a global public health *** is mainly caused by the plasmid-carried carbapenemase *** membrane vesicles(OMVs)contain toxins and other factors involved in various biological processes,includingβ-lactamase and antibiotic-resistance *** study aimed to reveal the transmission mechanism of OMV-mediated drug resistance of Klebsiella(K.)*** We selected CR-KP producing *** carbapenemase-2(KPC-2)to study whether they can transfer resistance genes through *** OMVs of CR-KP were obtained by ultracentrifugation,and incubated with carbapenem-sensitive *** for 4 ***,the carbapenem-sensitive *** was tested for the presence of bla_(KPC-2)resistance gene and its sensitivity to carbapenem *** The existence of OMVs was observed by the electron *** extracted OMVs had bla_(KPC-2)resistance *** incubation with OMVs,bla_(KPC-2)resistance gene was detected in sensitive ***,and it became resistant to imipenem and *** This study demonstrated that OMVs isolated from KPC-2-producing CR-KP could deliver bla_(KPC-2)to sensitive ***,allowing the bacteria to produce carbapenemase,which may provide a novel target for innovative therapies in combination with conventional antibiotics for treating carbapenem-resistant Enterobacteriaceae.

关键词： bla_(KPC-2) carbapenem-resistant Klebsiella pneumoniae carbapenemase outer membrane vesicles simplified carbapenem inactivation method

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超临界二氧化碳压裂井筒非稳态温度-压力耦合模型

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石油学报 2015年第2期36卷 203-209页

作者：郭建春曾冀西南石油大学油气藏地质及开发工程国家重点实验室四川成都610500 中国石油西南油气田公司采气工程研究院四川广汉 618300

井筒内温度、压力对二氧化碳物性参数影响较大,且三者之间相互影响,需进行耦合求解。基于连续性方程、运动方程、能量守恒定律和传热学理论,建立了超临界二氧化碳压裂井筒非稳态温度-压力耦合模型。采用交错网格全隐式离散模型,并调用Re... 详细信息

井筒内温度、压力对二氧化碳物性参数影响较大,且三者之间相互影响,需进行耦合求解。基于连续性方程、运动方程、能量守恒定律和传热学理论,建立了超临界二氧化碳压裂井筒非稳态温度-压力耦合模型。采用交错网格全隐式离散模型,并调用Refprop软件计算二氧化碳物性参数,采用循环迭代求解。计算结果表明:在目前施工条件下井底二氧化碳能达到超临界状态;井口二氧化碳注入温度对井筒温度影响明显,而对井筒压力影响较弱;二氧化碳注入压力和油管粗糙度对井筒压力影响较大,而对井筒温度影响较弱;二氧化碳注入排量对井筒温度、压力均有明显影响。二氧化碳的高摩阻和低黏度分别限制了施工排量和砂比的提升,因此需进一步加强流体减阻和增稠方面的研究。

关键词：超临界二氧化碳压裂非稳态井筒温度压力耦合

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Remote heteroepitaxy of transition metal dichalcogenides through monolayer hexagonal boron nitride

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Nano Research 2024年第4期17卷 3224-3231页

作者： jidong Huang jingren Chen Junhua Meng Siyu Zhang ji jiang jingzhen Li Libin zeng Zhigang Yin jinliang Wu Xingwang Zhang Key Lab of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Faculty of Science Beijing University of TechnologyBeijing 100124China

As a very promising epitaxy technology,the remote epitaxy has attracted extensive attention in recent years,in which graphene is the most used interlayer *** an isomorphic of graphene,two-dimensional(2D)hexagonal boron nitride(h-BN),is another promising interlayer for the remote ***,there is a current debate on the feasibility of using h-BN as interlayer in the remote ***,we demonstrate that the potential field of sapphire can completely penetrate monolayer h-BN,and hence the remote epitaxy of ZrS_(2) layers can be realized on sapphire substrates through monolayer *** field of sapphire can only partially penetrate the bilayer h-BN and result in the mixing of remote epitaxy and van der Waals(vdWs)*** to the weak interfacial scattering and high crystalline quality of ZrS_(2) epilayer,the ZrS_(2) photodetector with monolayer h-BN shows the best performance,with an on/off ratio of more than 2×10^(5) and a responsivity up to 379 mA·W^(-1).This work provides an efficient approach to prepare single-crystal transition metal dichalcogenides and their heterojunctions with h-BN,which have great potential in developing large-area 2D electronic devices.

关键词： remote epitaxy hexagonal boron nitride transition metal dichalcogenides chemical vapor deposition photodetectors

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Lead-free perovskite Cs_(2)AgBiBr_(6)photodetector detecting NIR light driven by titanium nitride plasmonic hot holes

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Photonics Research 2024年第3期12卷 522-533页

作者： ZIjiAN LIU YUYING XI WENBO zeng TING ji WENYAN WANG SITONG GUO LINLIN SHI RONG WEN YANXIA CUI GUOHUI LI College of Physics College of Electronic Information and Optical EngineeringKey Laboratory of Advanced Transducers and Intelligent Control System of Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

Lead-free perovskite Cs_(2)AgBiBr_(6)manifests great potential in developing high-performance,environmentally friendly,solution-processable photodetectors(PDs).However,due to the relatively large energy bandgap,the spectrum responses of Cs_(2)AgBiBr_(6)PDs are limited to the ultraviolet and visible region with wavelengths shorter than 560 *** this work,a broadband Cs_(2)AgBiBr_(6)PD covering the ultraviolet,visible,and near infrared(NIR)range is demonstrated by incorporating titanium nitride(TiN)nanoparticles that are prepared with the assistance of self-assembled polystyrene sphere *** addition,an atomically thick Al2O3layer is introduced at the interface between the Cs_(2)AgBiBr_(6)film and TiN nanoparticles to alleviate the dark current deterioration caused by nanoparticle *** a result,beyond the spectrum range where Cs_(2)AgBiBr_(6)absorbs light,the external quantum efficiency(EQE)of the TiN nanoparticle incorporated Cs_(2)AgBiBr_(6)PD is enhanced significantly compared with that of the control,displaying enhancement factors as high as 2000 over a broadband NIR wavelength *** demonstrated enhancement in EQE arises from the photocurrent contribution of plasmonic hot holes injected from TiN nanoparticles into Cs_(2)AgBiBr_(6).This work promotes the development of broadband solution-processable perovskite PDs,providing a promising strategy for realizing photodetection in the NIR region.

关键词： perovskite titanium ultraviolet

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Prediction of suitable water content in granulation of sintering mixture based on Litster's model

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Journal of Iron and Steel Research International 2024年第3期31卷 552-560页

作者： Fang-lei Dai Xiao-hui Fan Xiao-xian Huang Xu-ling Chen Min Gan Zhi-yun ji zeng-qing Sun School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Suitable water content plays a decisive role in the granulation of sintering ***,a method was proposed to predict the suitable water content for effective granulation on the basis of Litster's granulation *** granulation effectiveness of a sintering mixture was predicted by the model,with the allowance error of±10%.The effects of the water absorption properties,particle size composition and content of adhesive particles on the suitable water content were *** results showed that the allowable error of prediction was within±0.5%compared to the experimentally determined suitable water *** an increase in adhesive powder content of mixtures with higher water absorption,the suitable water content increased to achieve similar granulation ***,as the amount of concentrates increased,the suitable water content first increased and then remained *** influence of the water absorption characteristics of the adhesive particles on the suitable water content was less than that of their particle size composition in the mixture.

关键词： Adhesive particle Sintering mixture Granulation effectiveness Suitable water content

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