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散水式喷头水滴特性试验研究
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作者 朱兴业 钱兆 +2 位作者 刘俊萍 张爱英 魏巧 《排灌机械工程学报》 CSCD 北大核心 2024年第1期79-85,共7页
为了掌握散水式喷头的水力性能,探究其水滴直径、水滴速度和水滴动能的规律.采用2DVD视频雨滴谱仪对散水式喷头在2种出水口当量直径D e、5种工作压力的工况下进行水力性能试验.结果表明:D e为4.88和5.98 mm的水滴平均直径分别集中分布在... 为了掌握散水式喷头的水力性能,探究其水滴直径、水滴速度和水滴动能的规律.采用2DVD视频雨滴谱仪对散水式喷头在2种出水口当量直径D e、5种工作压力的工况下进行水力性能试验.结果表明:D e为4.88和5.98 mm的水滴平均直径分别集中分布在0.73~1.38和0.85~1.53 mm内,说明出水口当量直径越小,水滴分布可能更集中,且水滴平均直径随着距喷头距离增大而增大,并呈指数分布.水滴速度随压力和距喷头距离增大而增大,D e为4.88 mm的水滴平均速度大于D e为5.98 mm的.在相同的工作压力下,D e为5.98 mm的喷头其单个水滴动能、单位体积动能和动能强度均大于D e为4.88 mm的.单个水滴动能和水滴平均直径呈指数关系,单位体积动能与距喷头距离呈指数分布,动能强度在距喷头距离0.1~0.6 m内波动幅度较小. 展开更多
关键词 散水式喷头 2DVD视频雨滴谱仪 水滴速度 水滴直径 水滴动能
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固井堵漏材料自动计量添加装置的设计
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作者 朱剑锋 马春旭 +4 位作者 郭嘉 侯林 钱兆 吴玉月 王川 《包装与食品机械》 CAS 北大核心 2024年第2期106-112,共7页
为解决人工添加固井堵漏材料劳动强度高、精度差和混合均匀度低等问题,开发以料仓、皮带计量和软管式螺旋输送机等为主要部件的固井堵漏材料自动化计量添加装置。设计以PLC为核心,触摸屏为人机交互界面,以料位计、变频器、称重传感器、... 为解决人工添加固井堵漏材料劳动强度高、精度差和混合均匀度低等问题,开发以料仓、皮带计量和软管式螺旋输送机等为主要部件的固井堵漏材料自动化计量添加装置。设计以PLC为核心,触摸屏为人机交互界面,以料位计、变频器、称重传感器、变频电机为主要硬件,采用专家PID控制策略,实现信号采集、逻辑控制和数据通讯。进行纤维料3~5 kg/min,片状料10~50 kg/min极限输送的自动化测试,材料可以通过软管式螺旋输送机实现持续混合搅拌,和任意位置的均匀稳定投送,满足片状料、纤维料2类材料在仓内的下料计量和输送。测试结果显示,材料混合均匀度好,人工参与度少,计量精度稳定且误差<±1%;与人工相比,综合效能提高2倍以上。研究为海洋石油钻井平台自动化作业提供支撑。 展开更多
关键词 固井 计量 投料自动化 堵漏材料 PLC
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不同结构参数对喷头雾化特性的影响规律
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作者 冯静之 朱兴业 +2 位作者 华珊 钱兆 刘俊萍 《排灌机械工程学报》 CSCD 北大核心 2024年第4期426-432,共7页
针对目前雾化喷嘴存在的雾化压力高、雾化范围小等问题,设计了一种雾化喷头,并分析了该喷头的雾化特性.利用激光粒度测试仪探究压力为0.15~0.30 MPa、出口直径为0.3~0.9 mm等条件下对喷头雾化锥角、速度场和液滴粒径的影响,获取了不同... 针对目前雾化喷嘴存在的雾化压力高、雾化范围小等问题,设计了一种雾化喷头,并分析了该喷头的雾化特性.利用激光粒度测试仪探究压力为0.15~0.30 MPa、出口直径为0.3~0.9 mm等条件下对喷头雾化锥角、速度场和液滴粒径的影响,获取了不同试验条件下流场流动特性的变化规律:在低压力下,雾化锥角受喷头出口直径的影响较大,出口收缩角越大则雾化特性越优良;出口直径为0.9 mm的喷头,喷腔长孔比为1、出口收缩角为75°时更能实现大范围的作业;随着喷雾压力增大,水滴速度最大值也显著增大,但压力对雾化流场整体速度分布趋势的影响不大.水滴直径也随着喷头出口直径增大而增大,且喷头出口直径对水滴直径影响显著,但水滴直径相同时,出口直径越大,水滴速度越小.该结果为雾化喷头在中低压范围内的应用提供了理论参考. 展开更多
关键词 雾化喷头 雾化特性 液滴粒径 雾化锥角 出口直径 出口收缩角
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Synergistic effects of the entomopathogenic fungus Isaria javanica and low doses of dinotefuran on the efficient control of the rice pest Sogatella furcifera
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作者 Tingting Zhou qian zhao +4 位作者 Chengzhou Li Lu Ye Yanfang Li Nemat OKeyhani Zhen Huang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第2期621-638,共18页
The rice planthopper,Sogatella furcifera,is a piercing-sucking insect pest of rice,Oryza sativa.It is responsible for significant crop yield losses,and has developed moderate to high resistance to several commonly use... The rice planthopper,Sogatella furcifera,is a piercing-sucking insect pest of rice,Oryza sativa.It is responsible for significant crop yield losses,and has developed moderate to high resistance to several commonly used chemical insecticides.We investigated the effects of the insect fungal pathogen Isaria javanica,alone and in combination with the chemical insecticide dinotefuran,on S.furcifera under both laboratory and field conditions.Our results show that I.javanica displays high infection efficiency and mortality for different stages of S.furcifera,reducing adult survival,female oviposition and ovary development.Laboratory bioassays showed that the combined use of I.javanica with a low dose(4-16 mg L^(-1))of dinotefuran resulted in higher mortality in S.furcifera than the use of I.javanica or dinotefuran alone.The combined treatment also had more significant effects on several host enzymes,including superoxide dismutase,catalase,peroxidase,and prophenol oxidase activities.In field trials,I.javanica effectively suppressed populations of rice planthoppers to low levels(22-64%of the level in untreated plots).Additional field experiments showed synergistic effects,i.e.,enhanced efficiency,for the control of S.furcifera populations using the combination of a low dose of I.javanica(1×10^(4) conidia mL^(-1))and a low dose of dinotefuran(~4.8-19.2%of normal field use levels),with control effects of>90%and a population level under 50 insects per 100 hills at 3-14 days post-treatment.Our findings indicate that the entomogenous fungus I.javanica offers an attractive biological control addition as part of the integrated pest management(IPM)practices for the control of rice plant pests. 展开更多
关键词 Isaria javanica Sogatella furcifera entomopathogenic fungus white planthopper RICE synergistic effect on pest control
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Soybean(Glycine max)rhizosphere organic phosphorus recycling relies on acid phosphatase activity and specific phosphorusmineralizing-related bacteria in phosphate deficient acidic soils
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作者 qianqian Chen qian zhao +9 位作者 Baoxing Xie Xing Lu Qi Guo Guoxuan Liu Ming Zhou Jihui Tian Weiguo Lu Kang Chen Jiang Tian Cuiyue Liang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第5期1685-1702,共18页
Bacteria play critical roles in regulating soil phosphorus(P) cycling. The effects of interactions between crops and soil P-availability on bacterial communities and the feedback regulation of soil P cycling by the ba... Bacteria play critical roles in regulating soil phosphorus(P) cycling. The effects of interactions between crops and soil P-availability on bacterial communities and the feedback regulation of soil P cycling by the bacterial community modifications are poorly understood. Here, six soybean(Glycine max) genotypes with differences in P efficiency were cultivated in acidic soils with long-term sufficient or deficient P-fertilizer treatments. The acid phosphatase(AcP) activities, organic-P concentrations and associated bacterial community compositions were determined in bulk and rhizosphere soils. The results showed that both soybean plant P content and the soil AcP activity were negatively correlated with soil organic-P concentration in P-deficient acidic soils. Soil P-availability affected the ɑ-diversity of bacteria in both bulk and rhizosphere soils. However, soybean had a stronger effect on the bacterial community composition, as reflected by the similar biomarker bacteria in the rhizosphere soils in both P-treatments. The relative abundance of biomarker bacteria Proteobacteria was strongly correlated with soil organic-P concentration and AcP activity in low-P treatments. Further high-throughput sequencing of the phoC gene revealed an obvious shift in Proteobacteria groups between bulk soils and rhizosphere soils, which was emphasized by the higher relative abundances of Cupriavidus and Klebsiella, and lower relative abundance of Xanthomonas in rhizosphere soils. Among them, Cupriavidus was the dominant phoC bacterial genus, and it was negatively correlated with the soil organic-P concentration. These findings suggest that soybean growth relies on organic-P mineralization in P-deficient acidic soils, which might be partially achieved by recruiting specific phoCharboring bacteria, such as Cupriavidus. 展开更多
关键词 organic phosphorus acid phosphatase SOYBEAN bacterial community phoC-harboring bacteria RHIZOSPHERE
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Porous TiFe_(2) intermetallic compound fabricated via elemental powder reactive synthesis
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作者 qian zhao Zhenli He +3 位作者 Yuehui He Yue Qiu Zhonghe Wang Yao Jiang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2024年第4期764-772,共9页
Porous intermetallics show potential in the field of filtration and separation as well as in the field of catalysis.Herein,porous Ti Fe2intermetallics were fabricated by the reactive synthesis of elemental powders.The... Porous intermetallics show potential in the field of filtration and separation as well as in the field of catalysis.Herein,porous Ti Fe2intermetallics were fabricated by the reactive synthesis of elemental powders.The phase transformation and pore formation of porous TiFe2intermetallics were investigated,and its corrosion behavior and hydrogen evolution reaction(HER)performance in alkali solution were studied.Porous TiFe2intermetallics with porosity in the range of 34.4%-56.4%were synthesized by the diffusion reaction of Ti and Fe elements,and the pore formation of porous TiFe2intermetallic compound is the result of a combination of the bridging effect and the Kirkendall effect.The porous TiFe2samples exhibit better corrosion resistance compared with porous 316L stainless steel,which is related to the formation of uniform nanosheets on the surface that hinder further corrosion,and porous TiFe2electrode shows the overpotential of 220.6 and 295.6 mV at 10 and 100 mA·cm-2,suggesting a good catalytic performance.The synthesized porous Fe-based intermetallic has a controllable pore structure as well as excellent corrosion resistance,showing its potential in the field of filtration and separation. 展开更多
关键词 TiFe2 intermetallic compound porous materials reactive synthesis corrosion behavior hydrogen evolution reaction
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Advantageous properties of halide perovskite quantum dots towards energy-efficient sustainable applications
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作者 qian zhao Shuo Wang +9 位作者 Young-Hoon Kim Shekhar Mondal Qingqing Miao Simiao Li Danya Liu Miao Wang Yaxin Zhai Jianbo Gao Abhijit Hazarika Guo-Ran Li 《Green Energy & Environment》 SCIE EI CAS CSCD 2024年第6期949-965,共17页
As lead halide perovskite(LHP)semiconductors have shown tremendous promise in many application fields,and particularly made strong impact in the solar photovoltaic area,low dimensional quantum dot forms of these perov... As lead halide perovskite(LHP)semiconductors have shown tremendous promise in many application fields,and particularly made strong impact in the solar photovoltaic area,low dimensional quantum dot forms of these perovskites are showing the potential to make distinct marks in the fields of electronics,optoelectronics and photonics.The so-called perovskite quantum dots(PQDs)not only possess the most important features of LHP materials,i.e.,the unusual high defect tolerance,but also demonstrate clear quantum size effects,along with exhibiting desirable optoelectronic properties such as near perfect photoluminescent quantum yield,multiple exciton generation and slow hot-carrier cooling.Here,we review the advantageous properties of these nanoscale perovskites and survey the prospects for diverse applications which include lightemitting devices,solar cells,photocatalysts,lasers,detectors and memristors,emphasizing the distinct superiorities as well as the challenges. 展开更多
关键词 Perovskite quantum dot LIGHT-EMITTING Detector Laser Solar cell
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Influence of exchange bias on spin torque ferromagnetic resonance for quantification of spin–orbit torque efficiency
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作者 赵乾 张腾飞 +6 位作者 何斌 李子木 张森富 于国强 王建波 刘青芳 魏晋武 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第5期688-694,共7页
Antiferromagnet(AFM)/ferromagnet(FM)heterostructure is a popular system for studying the spin–orbit torque(SOT)of AFMs.However,the interfacial exchange bias field induces that the magnetization in FM layer is noncoll... Antiferromagnet(AFM)/ferromagnet(FM)heterostructure is a popular system for studying the spin–orbit torque(SOT)of AFMs.However,the interfacial exchange bias field induces that the magnetization in FM layer is noncollinear to the external magnetic field,namely the magnetic moment drag effect,which further influences the characteristic of SOT efficiency.In this work,we study the SOT efficiencies of IrMn/NiFe bilayers with strong interfacial exchange bias by using spin-torque ferromagnetic resonance(ST-FMR)method.A full analysis on the AFM/FM systems with exchange bias is performed,and the angular dependence of magnetization on external magnetic field is determined through the minimum rule of free energy.The ST-FMR results can be well fitted by this model.We obtained the relative accurate SOT efficiencyξ_(DL)=0.058 for the IrMn film.This work provides a useful method to analyze the angular dependence of ST-FMR results and facilitates the accurate measurement of SOT efficiency for the AFM/FM heterostructures with strong exchange bias. 展开更多
关键词 ANTIFERROMAGNETS spin-orbit torque exchange bias spin torque ferromagnetic resonance
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抑制磷酸二酯酶4可降低脑缺血/再灌注损伤后的水通道蛋白4表达、减轻星形胶质细胞肿胀
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作者 Kechun Chen Bingtian Xu +5 位作者 Shuqin Qiu Lu Long qian zhao Jiangping Xu Haitao Wang 唐颖馨(编译) 《神经损伤与功能重建》 2024年第6期F0003-F0003,共1页
我们的既往研究已显示磷酸二酯酶4(PDE4)抑制剂对大鼠中脑动脉闭塞/再灌注(MCAO/R)后的神经元损伤具有保护作用。然而,PDE4对脑水肿和星形胶质细胞肿胀的影响尚不清楚。在本研究中,我们发现通过Roflumilast(Roflu)抑制PDE4可以减轻大鼠... 我们的既往研究已显示磷酸二酯酶4(PDE4)抑制剂对大鼠中脑动脉闭塞/再灌注(MCAO/R)后的神经元损伤具有保护作用。然而,PDE4对脑水肿和星形胶质细胞肿胀的影响尚不清楚。在本研究中,我们发现通过Roflumilast(Roflu)抑制PDE4可以减轻大鼠缺血再灌注后的脑水肿、降低脑组织含水量。Roflu减少了水通道蛋白4(AQP4)的表达,而磷酸化蛋白激酶B(Akt)和叉头框蛋白O3a(FoxO3a)的水平增加。此外,Roflu减少原代星形胶质细胞在糖氧剥夺/再灌注(OGD/R)后的细胞体积和AQP4的表达。同样,PDE4B敲低显示出与PDE4抑制相似的作用;而PDE4B过表达可以减少PDE4B敲低对AQP4表达的抑制作用。本研究还发现,Roflu对AQP4表达和细胞体积的影响可以被Akt抑制剂MK2206阻断。神经炎症和星形胶质细胞激活是在卒中病理生理的机制之一,所以本研究用白细胞介素-1β(IL-1β)处理原代星形胶质细胞。结果显示,经IL-1β处理的星形胶质细胞表现出AQP4和磷酸化Akt及FoxO3a减少。Roflu显著降低了AQP4表达,这伴随着Akt和FoxO3a磷酸化的增加。此外,FoxO3a的过表达部分逆转了Roflu对AQP4表达的影响。本研究结果显示,PDE4抑制通过Akt/FoxO3a/AQP4通路限制了缺血诱导的脑水肿和星形胶质细胞肿胀。PDE4是脑缺血后脑水肿的一个有潜力的干预目标。 展开更多
关键词 水通道蛋白4 脑水肿 脑缺血 叉头框蛋白O3a 磷酸二酯酶4
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“源-汇”热景观理论下的城市通风廊道构建研究——以合肥市主城区为例
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作者 钱兆 顾康康 +1 位作者 陈小芳 李龙 《宿州学院学报》 2024年第3期57-62,73,共7页
科学构建城市通风廊道对缓解城市热岛效应有着重要作用。以合肥市主城区为例,利用“源-汇”热景观理论提取通风廊道起终点,MCR模型和重力模型分析并筛选通风廊道,构建研究区通风廊道网络。结果表明:起点斑块以水库、湿地公园、森林的集... 科学构建城市通风廊道对缓解城市热岛效应有着重要作用。以合肥市主城区为例,利用“源-汇”热景观理论提取通风廊道起终点,MCR模型和重力模型分析并筛选通风廊道,构建研究区通风廊道网络。结果表明:起点斑块以水库、湿地公园、森林的集中区为主,终点斑块以城市建成密集区为主;共构建13条一级廊道,9条二级廊道,全长312.44 km;在夏季主导风向下,除Y5斑块外的其他热源斑块均能够通过一级廊道引入2个及以上的热汇斑块的冷空气;“源-汇”理论的引入可以增强城市通风廊道对于城市冷源和热源区域的联系,加强城市通风廊道的效能。 展开更多
关键词 “源-汇”热景观 热环境 城市通风廊道 合肥市
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UFLC-MS/MS法测定人血浆中阿帕替尼的药物浓度 被引量:1
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作者 李昊 孟雪 +1 位作者 钱钊 海鑫 《中国药物应用与监测》 CAS 2023年第1期15-18,23,共5页
目的:建立一种灵敏度高、专属性强、便捷、高效的超快速液相色谱-质谱联用方法,用于测定人血浆中阿帕替尼药物浓度。方法:以伊马替尼作为内标物,采用乙腈沉淀血浆中的蛋白;色谱柱:Waters Bridge C_(18)柱(4.6 mm×150 mm,5μm);流... 目的:建立一种灵敏度高、专属性强、便捷、高效的超快速液相色谱-质谱联用方法,用于测定人血浆中阿帕替尼药物浓度。方法:以伊马替尼作为内标物,采用乙腈沉淀血浆中的蛋白;色谱柱:Waters Bridge C_(18)柱(4.6 mm×150 mm,5μm);流动相为A-乙腈和B-1 mmol·L^(-1)甲酸铵,梯度洗脱(0~2.5 min 85%A,2.5~3 min 85%A~50%A,3~4 min 50%A);流速:1 mL·min^(-1);进样量:5μL;柱温:40℃;进样检测时间:4 min;采取ESI离子源,正离子模式下MRM扫描模式,阿帕替尼的离子对为m/z 398.2→212.2,内标的离子对为m/z 494.1→394.1。结果:阿帕替尼在20~1500 ng·mL^(-1)浓度范围内线性关系良好,r=0.999;日内、日间精密度均<15%,方法和提取回收率>90%,进样室、冻融、4℃条件下稳定性的RSD均<10%;患者血浆中阿帕替尼的浓度介于30.90~760.75 ng·mL^(-1)。结论:本实验建立的方法准确度高且操作简单,可在临床用于人血浆中阿帕替尼药物浓度的测定。 展开更多
关键词 阿帕替尼 伊马替尼 治疗药物监测 UFLC-MS/MS
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TiO_(2)抗菌涂层制备方法的研究进展
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作者 钱钊 杜旭 +4 位作者 尹莉 刘彦伯 李文戈 张静 赵远涛 《机械工程材料》 CAS CSCD 北大核心 2023年第6期8-13,35,共7页
TiO_(2)抗菌涂层具有杀菌时效长、污染损害小等特点,有着传统杀菌剂无法比拟的应用前景。综述了TiO_(2)涂层的杀菌机理和涂层种类,对主要的制备工艺,如溶胶-凝胶法、电沉积法、磁控溅射法、等离子喷涂法、微弧氧化法的优缺点和应用现状... TiO_(2)抗菌涂层具有杀菌时效长、污染损害小等特点,有着传统杀菌剂无法比拟的应用前景。综述了TiO_(2)涂层的杀菌机理和涂层种类,对主要的制备工艺,如溶胶-凝胶法、电沉积法、磁控溅射法、等离子喷涂法、微弧氧化法的优缺点和应用现状进行了介绍,并对未来TiO_(2)抗菌涂层的研究方向进行了展望。 展开更多
关键词 TiO_(2)抗菌涂层 光催化 杀菌性能 制备方法
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睑板腺囊肿切除术后角膜高阶像差的早期变化
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作者 赵倩 赵晓燕 《国际眼科杂志》 CAS 北大核心 2023年第1期163-166,共4页
目的:探究睑板腺囊肿切除术后角膜高阶像差和角膜屈光度的变化。方法:选取2021-01/2022-01在我院行手术治疗的单侧上睑睑板腺囊肿患者49例49眼进行前瞻性研究,按囊肿直径大小分为1组(24例24眼,囊肿直径3~5mm)和2组(25例25眼,囊肿直径>... 目的:探究睑板腺囊肿切除术后角膜高阶像差和角膜屈光度的变化。方法:选取2021-01/2022-01在我院行手术治疗的单侧上睑睑板腺囊肿患者49例49眼进行前瞻性研究,按囊肿直径大小分为1组(24例24眼,囊肿直径3~5mm)和2组(25例25眼,囊肿直径>5mm)。所有患者均于术前、术后2mo通过Siruis眼前节分析系统测量6mm直径范围内角膜总高阶像差、彗差、三叶草像差、球面像差及角膜SimK值、平轴散光(Minimum SimK)、陡轴散光(Maximum SimK)。结果:术后2mo,2组患者角膜总高阶像差、三叶草差及彗差与同组术前比较均有差异(P<0.05),而球差与同组术前比较无差异(P>0.05);1组患者Maximum SimK值和Minimum SimK值分别与同组术前比较均无差异(P>0.05),而2组患者Maximum SimK值和Minimum SimK值分别与同组术前比较均有差异(P<0.05)。结论:大的睑板腺囊肿手术治疗后角膜高阶像差特别是三叶草差和彗差明显减小,散光较术前减小,故对于拟行屈光手术的睑板腺囊肿患者特别是病灶大于5mm的患者建议切除囊肿后再行详细的屈光术前检查。 展开更多
关键词 睑板腺囊肿 高阶像差 角膜屈光手术 三维眼前节分析系统 散光
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Establishment and evaluation of animal models of sepsis-associated encephalopathy 被引量:1
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作者 Mubing Qin Yanxia Gao +5 位作者 Shigong Guo Xin Lu qian zhao Zengzheng Ge Huadong Zhu Yi Li 《World Journal of Emergency Medicine》 SCIE CAS CSCD 2023年第5期349-353,共5页
BACKGROUND:Sepsis-associated encephalopathy(SAE) is a critical disease caused by sepsis.In addition to high mortality,SAE can also adversely aff ect life quality and lead to significant socioeconomic costs.This review... BACKGROUND:Sepsis-associated encephalopathy(SAE) is a critical disease caused by sepsis.In addition to high mortality,SAE can also adversely aff ect life quality and lead to significant socioeconomic costs.This review aims to explore the development of evaluation animal models of SAE,giving insight into the direction of future research in terms of its pathophysiology and therapy.METHODS:We performed a literature search from January 1,2000,to December 31,2022,in MEDLINE,PubMed,EMBASE,and Web of Science using related keywords.Two independent researchers screened all the accessible articles based on the inclusion and exclusion criteria and collected the relevant data of the studies.RESULTS:The animal models for sepsis are commonly induced through cecal ligation and puncture(CLP) or lipopolysaccharide(LPS) injection.SAE can be evaluated using nervous reflex scores and sepsis evaluation during the acute phase,or through Morris water maze(MWM),openfield test,fear condition(FC) test,inhibitory avoidance,and other tests during the late phase.CONCLUSION:CLP and LPS injection are the most common methods for establishing SAE animal models.Nervous reflexs cores,MWM,FC test,and inhibitory avoidance are widely used in SAE model analysis.Future research should focus on establishing a standardized system for SAE development and analysis. 展开更多
关键词 Sepsis Sepsis-associated encephalopathy Animal model Systematic review
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Incidence and clinical treatment of hypertriglyceridemic acute pancreatitis:A few issues 被引量:1
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作者 Qun-Ying Yang qian zhao Jian-Wen Hu 《World Journal of Clinical Cases》 SCIE 2023年第2期479-481,共3页
Hypertriglyceridemia is a well-recognized etiology of acute pancreatitis,and the incidence of hypertriglyceridemic acute pancreatitis(HTG-AP)has increased in frequency worldwide in response to lifestyle changes.It is ... Hypertriglyceridemia is a well-recognized etiology of acute pancreatitis,and the incidence of hypertriglyceridemic acute pancreatitis(HTG-AP)has increased in frequency worldwide in response to lifestyle changes.It is crucial to identify hypertriglyceridemia as the cause of pancreatitis and initiate appropriate treatment.Insulin treatment produces effective lowering of triglycerides,but in our opinion,non-diabetic patients with HTG-AP require separate consideration to avoid hypoglycemia. 展开更多
关键词 Hypertriglyceridemic acute pancreatitis INCIDENCE ETIOLOGY INSULIN TREATMENT
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Impulsivity-related right superior frontal gyrus as a biomarker of internet gaming disorder 被引量:1
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作者 Pengyu Zhang Yu Pan +10 位作者 Rujing Zha Hongwen Song Cunfeng Yuan qian zhao Yi Piao Jiecheng Ren Yijun Chen Peipeng Liang Ran Tao Zhengde Wei Xiaochu Zhang 《General Psychiatry》 CSCD 2023年第4期321-333,共13页
Background Internet gaming disorder(IGD)is a mental health issue that affects individuals worldwide.However,the lack of knowledge about the biomarkers associated with the development of IGD has restricted the diagnosi... Background Internet gaming disorder(IGD)is a mental health issue that affects individuals worldwide.However,the lack of knowledge about the biomarkers associated with the development of IGD has restricted the diagnosis and treatment of this disorder.Aims We aimed to reveal the biomarkers associated with the development of IGD through resting-state brain network analysis and provide clues for the diagnosis and treatment of IGD.Methods Twenty-six patients with IGD,23 excessive internet game users(EIUs)who recurrently played internet games but were not diagnosed with IGD and 29 healthy controls(HCs)performed delay discounting task(DDT)and Iowa gambling task(IGT).Resting-state functional magnetic resonance imaging(fMRI)data were also collected.Results Patients with IGD exhibited significantly lower hubness in the right medial orbital part of the superior frontal gyrus(ORBsupmed)than both the EIU and the HC groups.Additionally,the hubness of the right ORBsupmed was found to be positively correlated with the highest excessive internet gaming degree during the past year in the EIU group but not the IGD group;this might be the protective mechanism that prevents EIUs from becoming addicted to internet games.Moreover,the hubness of the right ORBsupmed was found to be related to the treatment outcome of patients with IGD,with higher hubness of this region indicating better recovery when undergoing forced abstinence.Further modelling analysis of the DDT and IGT showed that patients with IGD displayed higher impulsivity during the decision-making process,and impulsivity-related parameters were negatively correlated with the hubness of right ORBsupmed.Conclusions Our findings revealed that the impulsivity-related right ORBsupmed hubness could serve as a potential biomarker of IGD and provide clues for the diagnosis and treatment of IGD. 展开更多
关键词 INTERNET diagnosis protective
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An upgraded polymeric composite with interparticle chemical bonding microstructure toward lithium-ion battery separators with enhanced safety and electrochemical performances
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作者 qian zhao Ling Ma +10 位作者 Ye Xu Xiulong Wu Shuai Jiang Qiaotian Zheng Guang Hong Bin He Chen Li Wanglai Cen Wenjun Zhou Yan Meng Dan Xiao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第9期402-413,共12页
A composite separator of SiC/PVDF-HFP was synthesized for lithium-ion batteries with high thermal and mechanical stabilities.Benefiting from the nanoscale,high hardness,and melting point of SiC,SiC/PVDFHFP with highly... A composite separator of SiC/PVDF-HFP was synthesized for lithium-ion batteries with high thermal and mechanical stabilities.Benefiting from the nanoscale,high hardness,and melting point of SiC,SiC/PVDFHFP with highly uniform microstructure was obtained.This polarization caused by barrier penetration was significantly restrained.Due to the Si-F bond between SiC and PVDF-HFP,the structural stability has been obviously enhanced,which could suppress the growth of lithium(Li) dendrite.Furthermore,some 3D reticulated Si nanowires are found on the surface of Li anode,which also greatly inhibit Li dendrites and result in irregular flakes of Li metal.Especially,the shrinkage of 6% SiC/PVDF-HFP at 150℃ is only 5%,which is notably lower than those of PVDF-HFP and Celgard2500.The commercial LiFePO_(4) cell assembled with 6% SiC/PVDF-HFP possesses a specific capacity of 157.8 mA h g^(-1) and coulomb efficiency of 98% at 80℃.In addition,the tensile strength and modulus of 6% SiC/PVDF-HFP could reach 14.6 and 562 MPa,respectively.And a small deformation(1000 nm) and strong deformation recovery are obtained under a high additional load(2.3 mN).Compared with PVDF-HFP and Celgard2500,the symmetric Li cell assembled with 6% SiC/PVDF-HFP has not polarized after 900 cycles due to its excellent mechanical stabilities.This strategy provides a feasible solution for the composite separator of high-safety batteries with a high temperature and impact resistance. 展开更多
关键词 SiC PVDF-HFP Composite separator Thermal stability Mechanical stability High safety battery
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Dual-functional pyrene implemented mesoporous silicon material used for the detection and adsorption of metal ions
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作者 Jing Huang Honghui Cai +3 位作者 qian zhao Yunpeng Zhou Haibo Liu Jing Wang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第8期108-117,共10页
A fluorescent active organic–inorganic hybrid material Py N-SBA-15 was synthesized by implementing pyrene derivatives into mesoporous SBA-15 silica.Py N-SBA-15 had detection and removal functionalities toward Al^(3+)... A fluorescent active organic–inorganic hybrid material Py N-SBA-15 was synthesized by implementing pyrene derivatives into mesoporous SBA-15 silica.Py N-SBA-15 had detection and removal functionalities toward Al^(3+),Cu^(2+),and Hg^(2+).On the one hand,Py N-SBA-15 was used as a fluorescence sensor and displayed high sensitivity toward Al^(3+),Cu^(2+),and Hg^(2+)cations (limit of detection:8.0×10^(-7),1.1×10^(-7),and 2.9×10^(-6)mol·L^(–1),respectively) among various analytes with“turn-off”response.On the other hand,the adsorption studies for these toxic analytes (Cu^(2+),Hg^(2+),and Al^(3+)) showed that the ion removal capacity could reach up to 45,581,and 85 mg·g^(-1),respectively.Moreover,the Langmuir isotherm models were better fitted with the adsorption data,indicating that the adsorption was mono-layer adsorption.Kinetic analysis revealed that the adsorption process was well described by the pseudo-second-order kinetic model for Cu^(2+)and Hg^(2+)and pseudo-first-order kinetic model for Al^(3+).The prepared silica material could be reused in four recycles without significantly decreasing its adsorption capacity.Therefore,the Py N-SBA-15 material can serve as a promising candidate for the simultaneous rapid detection and efficient adsorption of metal ions. 展开更多
关键词 Dual function Nanomaterials Mesoporous silica Metal ions Detection and adsorption
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非局部KP-型方程的广义双线性导数
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作者 赵倩 闫璐 《数学物理学报(A辑)》 CSCD 北大核心 2023年第1期143-158,共16页
将Hirota双线性方法进行推广,得到广义的双线性变换方法,并应用于研究具有非局部项的非线性色散方程.该文利用本方法研究了包括KPII,BKP和(3+1)-维gKP的KP-型方程,导出了它们的非局部形式,作为结论,借助性质构造了KP-型方程的孤立波解... 将Hirota双线性方法进行推广,得到广义的双线性变换方法,并应用于研究具有非局部项的非线性色散方程.该文利用本方法研究了包括KPII,BKP和(3+1)-维gKP的KP-型方程,导出了它们的非局部形式,作为结论,借助性质构造了KP-型方程的孤立波解和近似解. 展开更多
关键词 双线性变换方法 广义双线性导数 近似解 KP方程 BKP方程
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Novel defined N7-methylguanosine modification-related lncRNAs for predicting the prognosis of laryngeal squamous cell carcinoma
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作者 zhaoXU YAO HAIBIN MA +5 位作者 LIN LIU qian zhao LONGCHAO QIN XUEYAN REN CHUANJUN WU KAILI SUN 《BIOCELL》 SCIE 2023年第9期1965-1975,共11页
Objective:Through integrated bioinformatics analysis,the goal of this work was to find new,characterised N7-methylguanosine modification-related long non-coding RNAs(m7G-lncRNAs)that might be used to predict the progn... Objective:Through integrated bioinformatics analysis,the goal of this work was to find new,characterised N7-methylguanosine modification-related long non-coding RNAs(m7G-lncRNAs)that might be used to predict the prognosis of laryngeal squamous cell carcinoma(LSCC).Methods:The clinical data and LSCC gene expression data for the current investigation were initially retrieved from the TCGA database&sanitised.Then,using co-expression analysis of m7G-associated mRNAs&lncRNAs&differential expression analysis(DEA)among LSCC&normal sample categories,we discovered lncRNAs that were connected to m7G.The prognosis prediction model was built for the training category using univariate&multivariate COX regression&LASSO regression analyses,&the model’s efficacy was checked against the test category data.In addition,we conducted DEA of prognostic m7G-lncRNAs among LSCC&normal sample categories&compiled a list of co-expression networks&the structure of prognosis m7G-lncRNAs.To compare the prognoses for individuals with LSCC in the high-&low-risk categories in the prognosis prediction model,survival and risk assessments were also carried out.Finally,we created a nomogram to accurately forecast the outcomes of LSCC patients&created receiver operating characteristic(ROC)curves to assess the prognosis prediction model’s predictive capability.Results:Using co-expression network analysis&differential expression analysis,we discovered 774 m7G-lncRNAs and 551 DEm7G-lncRNAs,respectively.We then constructed a prognosis prediction model for six m7G-lncRNAs(FLG−AS1,RHOA−IT1,AC020913.3,AC027307.2,AC010973.2 and AC010789.1),identified 32 DEPm7G-lncRNAs,analyzed the correlation between 32 DEPm7G-lncRNAs and 13 DEPm7G-mRNAs,and performed survival analyses and risk analyses of the prognosis prediction model to assess the prognostic performance of LSCC patients.By displaying ROC curves and a nomogram,we finally checked the prognosis prediction model's accuracy.Conclusion:By creating novel predictive lncRNA signatures for clinical diagnosis&therapy,our findings will contribute to understanding the pathogenetic process of LSCC. 展开更多
关键词 N7-methylguanosine modification Prognostic lncRNAs signatures Prognosis prediction model Laryngeal squamous cell carcinoma
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