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Interfacial engineering through lead binding using crown ethers in perovskite solar cells

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Journal of Energy Chemistry 2024年第5期92卷 263-270页

作者： sun-Ju Kim YeonJu Kim Ramesh Kumar Chitumalla Gayoung Ham Thanh-Danh Nguyen Joonkyung Jang Hyojung Cha Jovana Milić Jun-Ho yum Kevin Sivula Ji-Youn Seo Department of Nano Fusion Technology Pusan National UniversityBusan 46241Republic of Korea Laboratory for Molecular Engineering of Optoelectronic Nanomaterials Institute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland Department of Energy Convergence and Climate Change Kyungpook National UniversityDaegu 41566Republic of Korea Department of Hydrogen and Renewable Energy Kyungpook National UniversityDaegu 41566Republic of Korea Adolphe Merkle Institute University of FribourgCH-1700 FribourgSwitzerland

In the domain of perovskite solar cells(PSCs),the imperative to reconcile impressive photovoltaic performance with lead-related issue and environmental stability has driven innovative *** study pioneers an approach that not only rectifies lead leakage but also places paramount importance on the attainment of rigorous interfacial *** ethers,notably benzo-18-crown-6-ether(B18C6),were strategically integrated at the perovskite-hole transport material *** ethers exhibit a dual role:efficiently sequestering and immobilizing Pb^(2+)ions through host-guest complexation and simultaneously establishing a robust interfacial passivation *** crown ether candidates,guided by density functional theory(DFT)calculations,demonstrated proficiency in binding Pb2+ions and optimizing interfacial *** devices incorporating these materials achieved exceptional power conversion efficiency(PCE),notably 21.7%for B18C6,underscoring their efficacy in lead binding and interfacial *** techniques,including time-of-flight secondary ion mass spectrometry(ToF-SIMS),ultraviolet photoelectron spectroscopy(UPS),time-resolved photoluminescence(TRPL),and transient absorption spectroscopy(TAS),unequivocally affirmed Pb^(2+)ion capture and suppression of non-radiative ***,these PSCs maintained efficiency even after enduring 300 h of exposure to 85%relative *** research underscores the transformative potential of crown ethers,simultaneously addressing lead binding and stringent interfacial passivation for sustainable PSCs poised to commercialize and advance renewable energy applications.

关键词： Perovskite solar cells Interfacial passivation Crown ether materials Stability

Handover Mechanism Based on Underwater Hybrid Software-Defined Modem in Advanced Diver Networks

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Computers, Materials & Continua 2022年第3期70卷 5721-5743页

作者： K.M.Delphin Raj sun-Ho yum Jinyoung Lee Eunbi Ko Soo-Yong Shin Soo-Hyun Park Department of Financial Information Security Kookmin UniversitySeoul02707Korea Special Communication&Convergence Service Research Center Kookmin UniversitySeoul02707Korea Department of Computer Science Kookmin UniversitySeoul02707Korea

For the past few decades,the internet of underwater things(IoUT)otained a lot of attention in mobile aquatic applications such as oceanography,diver network monitoring,unmanned underwater exploration,underwater surveillance,location tracking system,*** of the IoUT applications rely on acoustic *** current IoUT applications face difficulty in delivering a reliable communication system due to the various technical limitations of IoUT environment such as low data rate,attenuation,limited bandwidth,limited battery,limited memory,connectivity problem,*** of the significant applications of IoUT include monitoring underwater diver *** order to perform a reliable and energy-efficient communication system in the underwater diver networks,a smart underwater hybrid softwaredefined modem(UHSDM)for the mobile ad-hoc network was developed that is used for selecting the best channel/medium among acoustic,visible light communication(VLC),and infrared(IR)based on the criteria established within the ***,due to the mobility of underwater divers,the developed UHSDMmeets the challenges such as connectivity errors,frequent link failure,transmission delay caused by re-routing,*** emergency,the divers are most at the risk of *** deal with diver mobility,connectivity,energy efficiency,and reducing the latency in ADN,a handover mechanism based on pre-built UHSDM is proposed in this *** paper focuses on(1)design of UHSDM for ADN(2)propose the channel selection mechanism in UHSDM for selecting the best medium for handover and(3)propose handover protocol *** implementation result shows that the proposed mechanism can be used to find the new route for divers in advance and the latency can be reduced ***,this paper shows the real field experiment of air tests and underwater tests with various *** research will contribute much to the profit of researchers in underwater diver networks and underwater net

关键词： Internet of underwater things(IoUT) underwater hybrid software-defined modem(UHSDM) advanced diver networks(ADN) channel selection mechanism(CSM) handover mechanism acoustic visible light communication(VLC) infrared(IR)

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食物成分对机体饱腹感的调控作用及机制

营养学报 2024年第3期46卷 294-301页

作者：孙意喆刘兰北京师范大学香港浸会大学联合国际学院UIC 珠海519087 北京营养师协会北京100050

饱腹感是指在人体摄入一定量的食物后,生理上及心理上不产生更多摄入欲望的一种状态。能量摄入和能量消耗的平衡能力涉及控制食欲的复杂生理机制。肥胖在全球范围内的流行更凸显了加强对调节饥饿感和饱腹感机制研究的重要意义。因此,本... 详细信息

饱腹感是指在人体摄入一定量的食物后,生理上及心理上不产生更多摄入欲望的一种状态。能量摄入和能量消耗的平衡能力涉及控制食欲的复杂生理机制。肥胖在全球范围内的流行更凸显了加强对调节饥饿感和饱腹感机制研究的重要意义。因此,本文通过综述机体饱腹感产生和调控的可能机制,进一步总结主要食品成分在调控机体饱腹感的作用,从而为研发改善人体健康的食品提供科学依据。

关键词：饱腹感食品成分生理机制

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外卖套餐中微量营养素检测方法探究

卫生研究 2024年第3期53卷 472-477,486页

作者：张添艾郭嘉琪胡子帆赵心悦孙维扬王璇邹晓莉四川大学华西公共卫生学院/四川大学华西第四医院卫生检验与检疫系成都610041 成都武侯卫教医学检验实验室有限责任公司成都610043

目的探究同时测定外卖套餐中维生素的方法,对微量营养素含量进行全面分析。方法57份外卖套餐样品经酶解、水解和提取后,采用高效液相色谱-紫外串联荧光检测法测定维生素;采用C18色谱柱(250 mm×4.6 mm,5μm)分离,水溶性维生素以离子对... 详细信息

目的探究同时测定外卖套餐中维生素的方法,对微量营养素含量进行全面分析。方法57份外卖套餐样品经酶解、水解和提取后,采用高效液相色谱-紫外串联荧光检测法测定维生素;采用C18色谱柱(250 mm×4.6 mm,5μm)分离,水溶性维生素以离子对酸性试剂为流动相,脂溶性维生素以甲醇为流动相,维生素B1、维生素B2、烟酸、烟酰胺和维生素A采用紫外检测,维生素B6和维生素E采用荧光检测。此外,参照GB 5009.268—2016《食品安全国家标准食品中多元素的测定》。采用电感耦合等离子体质谱法对外卖套餐中钙、镁、钠、钾、锌、硒和铜元素含量进行了测定。结果本方法灵敏度能达到微量营养素评价需求,维生素检出限为0.002~0.098 mg/100 g,定量限为0.007~0.327 mg/100 g,精密度良好(<10%),加标回收率为80.5%~103.8%(n=6)。检测结果显示,57份外卖套餐中微量营养素含量水平普遍较低,目标维生素检出率为21.1%~98.2%。结论本文建立的方法灵敏、准确,采集的外卖套餐中所测维生素和元素含量较低。

关键词：外卖套餐维生素元素微量营养素

Hydrochemical regime and its mechanism in Yamzhog yumco Basin, South Tibet

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Journal of Geographical Sciences 2017年第9期27卷 1111-1122页

作者： ZHE Meng ZHANG Xueqin WANG Buwei sun Rui ZHENG Du Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Rubber Research Institute Chinese Academy of Tropical Agriculture Sciences Danzhou 571737 Hainan China

The hydrochemistry of alpine lakes reflects water characteristic and its response to climatic change. Over 300 water samples had been collected from 52 sites of 5 lakes and 7 inflowing rivers in the Yamzhog yumco Basin, South Tibet, during 2009-2014, basing which the hydrochemical regime and its mechanism were analyzed along with the adoption of hydrological investigations in 1979 and 1984 as well. Results revealed that the waters were hard with weak alkalinity for the Yamzhog yumco Basin. Most of them were fresh, and the rest were slightly saline. The hydrochemical types of 5 lakes （i.e., Lake Yamzhog yum Co, Puma yum Co, Bajiu Co, Kongmu Co, and Chert Co） were SO4^2--HCO3^--Mg^2＋-Na^＋, HCO3^-- SO4^2--Mg^2＋-Ca^2＋, SO4^2--Mg^2＋-Na^＋, SO4^2--HCO3^--Ca^2＋, and SO4^2--Na^＋-Mg^2＋-Ca^2＋, respectively. As for rivers, HCO3^- and SO4^2- were the major anions, and Ca2. was the dominant cation. Lake Yamzhog yum Co, the largest lake in the basin, exhibited remarkable spatial variations in hydrochemistry at its surface but irregular changes with depth. The weathering of evaporates and carbonates, together with evaporation and crystallization, were the major mechanisms controlling the hydrochemistry of waters in the Yamzhog yumco Basin. Global warming also had significant impacts on hydrochemical variations.

关键词： hydrochemicai regime control mechanism Piper diagram Gibbs model Yamzhog yumco Basin alpine lake

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雅砻江锦屏电站右岸岩质高边坡安全监测分析

广东水利电力职业技术学院学报 2008年第4期6卷 37-41页

作者：司清华严明钟林君陈裕民孙瑜成都理工大学地质灾害防治与地质环境保护国家重点实验室四川成都610059

锦屏一级水电站右岸为岩质高边坡,地质条件复杂,工程位置重要,其安全性直接影响枢纽区建筑物。为研究右岸高线混凝土系统边坡变形趋势,以其开挖揭示的地质概况的分析为基础,重点分析该边坡的多点位移、外观变形及锚索荷载等监测信息,以... 详细信息

锦屏一级水电站右岸为岩质高边坡,地质条件复杂,工程位置重要,其安全性直接影响枢纽区建筑物。为研究右岸高线混凝土系统边坡变形趋势,以其开挖揭示的地质概况的分析为基础,重点分析该边坡的多点位移、外观变形及锚索荷载等监测信息,以期对工程的运行期安全产生指导意义。

关键词：锦屏一级水电站岩质高边坡监测变形

粒生素促进急性白血病化疗后中性粒细胞的恢复

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泰山医学院学报 2003年第2期24卷 150-151页

作者：杜遵民张立成孙军山宋玉敏陈方国中国人民解放军第88医院血液科山东泰安271000

目的　观察粒生素对急性白血病化疗后粒细胞减少的治疗效果。方法　 75例接受联合化疗的急性白血病患者随机分为两组 ,治疗组的 38例在化疗后中性粒细胞绝对值 (ANC)降至 1 5× 10 9 L时 ,加用粒生素 15 0 μg 天皮下注射使粒细胞恢复 ... 详细信息

目的　观察粒生素对急性白血病化疗后粒细胞减少的治疗效果。方法　 75例接受联合化疗的急性白血病患者随机分为两组 ,治疗组的 38例在化疗后中性粒细胞绝对值 (ANC)降至 1 5× 10 9 L时 ,加用粒生素 15 0 μg 天皮下注射使粒细胞恢复 ,直至复查ANC超过 2 0× 10 9 L后停药 ,平均用药时间 5 9天 ;对照组的 37例仅给予常规支持治疗。结果　使用粒生素治疗组ANC恢复到超过 2 0× 10 9 L的时间为 5 4± 2 7天 ,明显比未使用粒生素的对照组的 14 7± 3 5天短 ,且治疗组感染率为 18 4 2 %(7 38) ,对照组感染发生率为 75 6 8%(2 8 37) ,两者差异有显著性。结论　粒生素能够明显促进白血病患者化疗后粒细胞的恢复 ,疗效可靠 ,毒副作用轻微。

关键词：粒生素白血病化疗中性粒细胞

子宫内膜癌单通道和六通道柱状施源器三维近距离照射的剂量学比较

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中华放射肿瘤学杂志 2015年第1期24卷 60-64页

作者：侯晓荣于浪单书灿胡克沈捷连欣孙帅晏俊芳刘志凯杨波邱杰张福泉李晔雄北京协和医学院中国医学科学院肿瘤医院放疗科 100021 北京协和医学院中国医学科学院北京协和医院放疗科 100730

目的比较单通道和六通道柱状施源器2D、3D治疗计划靶区和正常组织照射剂量,评估三维近距离治疗在子宫内膜癌术后阴道内照射中的应用优势.方法早期子宫内膜癌10例,分别置入六通道和单通道柱状施源器,CT模拟定位扫描后做治疗计划.CTV定... 详细信息

目的比较单通道和六通道柱状施源器2D、3D治疗计划靶区和正常组织照射剂量,评估三维近距离治疗在子宫内膜癌术后阴道内照射中的应用优势.方法早期子宫内膜癌10例,分别置入六通道和单通道柱状施源器,CT模拟定位扫描后做治疗计划.CTV定义为阴道上段3 cm,黏膜下5 mm区域,处方剂量为5 Gy/次,共6次.分别制定不同施源器2D和3D治疗计划.比较两种施源器2D与3D计划CTV和OAR的剂量.结果两种施源器2D、3D治疗计划均能很好满足CTV剂量要求.使用单通道施源器时3D计划可显著降低直肠D0.1cm^3、D1.0cm^3、D2.0cm^3约18.2％、12.4％和10.7％.使用六通道施源器时,3D计划可显著降低直肠D0.1cm^3、D1.0cm^3、D2.0cm^3和Dmean约36.6％、24.8％、20.4％和6.1％,并降低了膀胱和尿道Dmean.与单通道施源器3D计划相比,六通道施源器3D计划进一步降低了直肠、膀胱和小肠的照射剂量.结论使用单通道或六通道柱状施源器进行阴道内照射时,2D和3D治疗计划均取得了很好的靶区剂量分布.3D治疗计划与2D治疗计划相比,能降低以直肠为主的OAR受量,六通道施源器3D计划进一步降低了直肠照射剂量.

关键词：子宫内膜癌近距离疗法阴道柱状施源器 CT引导的三维治疗计划

四逆加黄连方联合无创正压通气对急诊心力衰竭血清NT-proBNP、Galectin-3、CK-MB及氧动力学指标的影响

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中国急救复苏与灾害医学杂志 2022年第1期17卷 72-75,88页

作者：吕晓霞李玉明宋兰英孙俊霞王亚莉郭瑞娟邯郸明仁医院急诊科河北邯郸056000 邯郸明仁医院心内科河北邯郸056000

目的观察四逆加黄连方联合无创正压通气用于急性心力衰竭患者疗效的影响,及其对患者Galectin-3、NT-proBNP、CK-MB及氧动力学指标的影响。方法选取2017年1月—2020年5月于邯郸明仁医院治疗的急性心力衰竭患者162例,按照随机数字表法分... 详细信息

目的观察四逆加黄连方联合无创正压通气用于急性心力衰竭患者疗效的影响,及其对患者Galectin-3、NT-proBNP、CK-MB及氧动力学指标的影响。方法选取2017年1月—2020年5月于邯郸明仁医院治疗的急性心力衰竭患者162例,按照随机数字表法分为对照组和观察组,每组81例。对照组患者给予无创呼吸机辅助通气,观察组在对照组的基础上给予四逆加黄连方即四逆汤+黄连方。8周为1个疗程,进行1个疗程的治疗。比较两组患者临床指标、氧动力学指标[氧分压(PO2)、二氧化碳分压(PCO2)、氧耗量(VO2)、氧输送(DO2)]、短期预后、Galectin-3、NT-proBNP、CK-MB及肌钙蛋白水平。结果经过1个疗程的治疗,观察组的临床总有效率为88.89%,显著高于对照组的70.37%(χ^(2)=8.560,P=0.003)。治疗前,两组患者氧动力学指标PaCO2、VO2、PaO2、DO2、Galectin-3、NT-proBNP、肌钙蛋白及CK-MB水平无差异(P>0.05)。治疗后,观察组的氧动力学指标PaCO2、VO2、PaO2、DO2高于对照组(t=5.310,P=0.000;t=6.410,P=0.000;t=10.151,P=0.000;t=4.977,P=0.000)。观察组的Galectin-3、NT-proBNP、肌钙蛋白及CK-MB水平低于对照组(t=17.563,P=0.000;t=10.972,P=0.000;t=5.922,P=0.000;t=24.695,P=0.000)。观察组的插管率及病死率均低于对照组(χ^(2)=4.100,P=0.043;χ^(2)=5.760,P=0.016)。结论四逆加黄方联合无创正压通气用于急性心力衰竭具有良好的临床疗效,可以改善患者心肌损伤,提高患者氧动力学,改善血管内皮功能,且短期预后好,病死率低。

关键词：四逆加黄连方无创正压通气急诊心力衰竭 NT-proBNP Galectin-3 CK-MB 氧动力学