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综合物化探在内蒙古鄂伦春某铅锌多金属矿勘查中的应用及找矿效果

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地质学刊 2024年第2期48卷 202-209页

作者：杨志成王兴会安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) 安徽合肥230041

以内蒙古鄂伦春某铅锌多金属矿勘查为例,研究不同勘查阶段的有效物化探组合方法。通过1∶1万土壤地球化学扫面圈定多元素组合异常,根据磁测工作证实了火山口的存在,以火山机构边部受NE-NNE向断裂带控制的铅锌矿体为重点研究对象,兼顾火... 详细信息

以内蒙古鄂伦春某铅锌多金属矿勘查为例,研究不同勘查阶段的有效物化探组合方法。通过1∶1万土壤地球化学扫面圈定多元素组合异常,根据磁测工作证实了火山口的存在,以火山机构边部受NE-NNE向断裂带控制的铅锌矿体为重点研究对象,兼顾火山堆积型铅锌矿体,在激电中梯异常见矿不理想的情况下,开展复电阻率法剖面测量工作,通过二维电性剖面指导深部钻探工作部署,最终取得找矿突破。通过小比例尺物化探异常结合地质背景选区-大比例尺物化探扫面圈定找矿有利部位-二维物探剖面进一步确定目标体的埋深和产状以指导钻探,该套有效勘查方法组合对其他地区的找矿具有借鉴意义。

关键词：综合物化探异常特征激电异常铅锌矿找矿效果内蒙古鄂伦春

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牛血红蛋白肽的酶解工艺优化及其亚铁螯合物结构、稳定性研究

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食品工业科技 2024年第8期45卷 75-87页

作者：祝超智温耀涵许龙张秋会王兴辉赵改名韩广星河南农业大学食品科学技术学院河南郑州450002 临沂综合实验站山东临沂273300

本研究以牛血为原料,提取牛血红蛋白进行酶解,筛选最适的酶解蛋白酶,采用单因素结合响应面试验探究最佳酶解工艺,通过扫描紫外光谱,傅里叶红外光谱,扫描电镜和全自动氨基酸分析仪等技术对制备的牛血红蛋白肽铁螯合物(Bovine Hemoglobin ... 详细信息

本研究以牛血为原料,提取牛血红蛋白进行酶解,筛选最适的酶解蛋白酶,采用单因素结合响应面试验探究最佳酶解工艺,通过扫描紫外光谱,傅里叶红外光谱,扫描电镜和全自动氨基酸分析仪等技术对制备的牛血红蛋白肽铁螯合物(Bovine Hemoglobin Peptide Iron Chelate,BHP-Fe)进行结构表征,并通过热重分析和体外模拟胃肠道消化探究其体外稳定性。结果表明:胃蛋白酶和碱性蛋白酶分步酶解为最适酶解方法。在胃蛋白酶初步酶解的基础上,得到碱性蛋白酶最佳酶解条件:料液比1:3,酶解pH9.8,酶解温度41℃,酶添加量5900 U/g,酶解时间2 h。在此条件下,酶解得到牛血红蛋白肽(Bovine Hemoglobin Peptide,BHP)的Fe^(2+)螯合能力达72.11%,牛血红蛋白水解度达35.07%。紫外光谱和傅里叶红外光谱结果显示,Fe^(2+)与BHP肽链上的羧基氧和氨基氮发生螯合反应生成了不同于多肽的新物质;扫描电镜结果显示,多肽与Fe^(2+)螯合后从表面光滑的碎片状变成表面粗糙的块状,两者存在明显差异;氨基酸含量变化显示天冬氨酸、谷氨酸、赖氨酸为多肽与金属离子的结合提供结合位点;热重分析结果表明,BHP与BHP-Fe在300℃高温状态下依然能保持较好的稳定性;体外模拟消化稳定性分析结果表明,BHP-Fe相较于其它铁补充剂在胃肠道中能保持较高的稳定性。本实验制备的多肽源性补铁剂螯合力强、消化稳定性好、具有广阔应用前景,可为牛血副产物的高效利用和新型多肽源补铁剂的未来发展前景提供建设性参考。

关键词：牛血红蛋白肽响应面优化肽铁螯合物结构表征体外模拟消化

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A quasi-solid-state electrolyte with high ionic conductivity for stable lithium-ion batteries

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Science China(Technological Sciences) 2022年第10期65卷 2369-2379页

作者： ZHANG WenJing LI SenLin ZHANG YuRong wang xinghui LIU JingDong ZHENG YuanHui College of Chemistry Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated MaterialsFuzhou UniversityFuzhou 350108China College of Physics and Information Engineering Fuzhou UniversityFuzhou 350108China

The practical applications of solid-state electrolytes in lithium-ion batteries(LIBs)are hindered by their low ionic conductivity and high interfacial ***,an ethoxylated trimethylolpropane triacrylate based quasi-solid-state electrolyte(ETPTAQSSE)with a three-dimensional(3D)network is prepared by a one-step in-situ photopolymerization *** 3D network is designed to overcome the contradiction between the plasticizer-related ionic conductivity and the thickness-dependent mechanical property of quasi-solid-state *** ETPTA-QSSE achieves superb room-temperature ionic conductivity up to 4.55×10^(−3)S cm^(−1),a high lithium ion transference number of 0.57,along with a wide electrochemical window of 5.3 V(***+/Li),which outperforms most ever of the reported solid-state *** to the robust network structure and the cathodeelectrolyte integrated electrode design,Li metal symmetrical cells show reduced interface resistance and reinforced electrode/electrolyte interface *** applying the ETPTA-QSSE in LiFePO_(4)||Li cells,the quasi-solid-state cell demonstrates an enhanced initial discharge capacity(155.5 mAh g^(−1)at 0.2 C)accompanied by a high average Coulombic efficiency of greater than 99.3%,offering capacity retention of 92%after 200 ***,this work sheds light on the strategy of enhancing ionic conductivity and reducing interfacial resistance of quasi-solid-state electrolytes,which is promising for high-voltage LIBs.

关键词： quasi-solid-state electrolyte ionic conductivity electrochemical window photopolymerization lithium-ion batteries

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高性能锂硫电池碳基硫宿主的研究进展

功能材料与器件学报 2024年第1期 15-20页

作者：吴燔谢永辉王星辉福州大学福建省福州市350108

“双碳”战略要求新型储能器件具备更高的能量密度和更低的成本。锂硫电池因其低成本、环保和高比能(2600 Wh kg-1)等优势,而成为储能领域中最具潜能的电池体系,已受到了广泛的关注及研究。近年来,锂硫电池已取得了系列进展,但仍面临一... 详细信息

“双碳”战略要求新型储能器件具备更高的能量密度和更低的成本。锂硫电池因其低成本、环保和高比能(2600 Wh kg-1)等优势,而成为储能领域中最具潜能的电池体系,已受到了广泛的关注及研究。近年来,锂硫电池已取得了系列进展,但仍面临一些问题与挑战,包括硫固有的电荷传输效率差、可溶性多硫化物的“穿梭效应”、充放电过程中的剧烈体积膨胀及锂枝晶的生长等,这些问题会导致锂硫电池性能下降甚至失效。碳基硫宿主具有多孔、高电导、轻质、大比表面积等优点,能够有效解决以上难题,已成为锂硫电池研究领域中的重要方向。而碳材料种类繁多,有碳纳米纤维、碳纳米管、碳纳米片、碳纳米花等,不同形貌或具备不同纳米尺度维度的碳纳米结构对锂硫电池的性能具有不同的影响规律。基于此,本文围绕高性能锂硫电池碳基硫宿主进行综述,分类综述了一维、二维、及多维复合碳材料在锂硫电池领域的应用及其性能,阐述不同维度碳基硫宿主对其电化学性能的影响规律,并对未来的研究方向进行了一定的展望。

关键词：锂硫电池硫正极碳材料穿梭效应

3D打印可穿戴微型超级电容器的锯齿状NiCo_(2)S_(4)基电极

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Science China Materials 2024年第6期67卷 1956-1964页

作者：姚品晶李王阳柯秉渊陈丽慧简毅嘉乔华伟章华桂杨会颖王星辉 College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213000China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Pillar of Engineering Product Development Singapore University of Technology and DesignSingapore 487372Singapore

应用3D打印技术制备准固态微型超级电容器(MSCs)在可编程结构设计和高质量负载电极制造方面具有固有的优势.然而,缺乏高性能的可打印墨水和厚电极内缓慢的离子传输,对其实际电荷存储能力提出了重大挑战.本文成功开发了一种具有优异流变... 详细信息

应用3D打印技术制备准固态微型超级电容器(MSCs)在可编程结构设计和高质量负载电极制造方面具有固有的优势.然而,缺乏高性能的可打印墨水和厚电极内缓慢的离子传输,对其实际电荷存储能力提出了重大挑战.本文成功开发了一种具有优异流变性能的新型NiCo_(2)S_(4)基纳米复合墨水,并结合直墨书写的3D打印技术合理设计了准固态MSCs的三维结构.得益于牢固锚定在还原氧化石墨烯(rGO)表面的NiCo_(2)S_(4)纳米颗粒和有序的三维微孔,锯齿状厚电极提供了丰富的反应位点并增强了离子传输.因此,三层锯齿状MSCs的面电容高达416.7 mF cm^(-2).在1 mA cm^(-2)的电流密度下,单层、双层和三层电极的锯齿状MSCs的面电容与相对应的网格状MSCs相比,分别增加了127.1%、349.8%和585.9%.本工作为高面电容MSCs的材料和电极结构的跨尺度设计提供了新见解,推动了MSCs在柔性便携式电子设备中的集成应用研究.

关键词： micro-supercapacitor direct ink writing 3D printing quasi-solid-state high-areal capacitance

All-Solid-State Thin-Film Lithium-Sulfur Batteries

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Nano-Micro Letters 2023年第5期15卷 326-338页

作者： Renming Deng Bingyuan Ke Yonghui Xie Shoulin Cheng Congcong Zhang Hong Zhang Bingan Lu xinghui wang College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108People’s Republic of China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108FujianPeople’s Republic of China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213000People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Lithium-sulfur(Li-S)system coupled with thin-film solid electrolyte as a novel high-energy micro-battery has enormous potential for complementing embedded energy harvesters to enable the autonomy of the Internet of Things ***,the volatility in high vacuum and intrinsic sluggish kinetics of S hinder researchers from empirically integrating it into allsolid-state thin-film batteries,leading to inexperience in fabricating all-solid-state thin-film Li-S batteries(TFLSBs).Herein,for the first time,TFLSBs have been successfully constructed by stacking vertical graphene nanosheets-Li2S(VGsLi2S)composite thin-film cathode,lithium-phosphorous-oxynitride(LiPON)thin-film solid electrolyte,and Li metal *** eliminating Lipolysulfide shuttle effect and maintaining a stable VGs-Li2S/LiPON interface upon prolonged cycles have been well identified by employing the solid-state Li-S system with an“unlimited Li”reservoir,which exhibits excellent longterm cycling stability with a capacity retention of 81%for 3,000 cycles,and an exceptional high temperature tolerance up to 60℃.More impressively,VGs-Li2S-based TFLSBs with evaporated-Li thin-film anode also demonstrate outstanding cycling performance over 500 cycles with a high Coulombic efficiency of 99.71%.Collectively,this study presents a new development strategy for secure and high-performance rechargeable all-solid-state thin-film batteries.

关键词： All-solid-state thin-film batteries Li-S batteries Vertical graphene nanosheets Lithium phosphorous oxynitride Li2S

左沙丁胺醇和沙丁胺醇分别联合异丙托溴铵和倍氯米松治疗急性加重期慢性阻塞性肺疾病安全性及有效性观察

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药物评价研究 2024年第1期47卷 130-137页

作者：曹靓张欣欣罗源王凤玲汪星辉冯正平唐思慧毛俊孟祥云合肥市第二人民医院(安徽医科大学附属合肥医院)药学部安徽合肥230011 合肥市第二人民医院(安徽医科大学附属合肥医院)呼吸内科安徽合肥230011 皖北卫生职业学院药学院安徽宿州234099

目的探讨左沙丁胺醇和沙丁胺醇分别联合异丙托溴铵和倍氯米松用于急性加重期慢性阻塞性肺疾病(AECOPD)患者的安全性、有效性差异。方法采用随机对照、单中心、前瞻性研究方法,选取2022年1月1日—2022年12月31日在合肥市第二人民医院... 详细信息

目的探讨左沙丁胺醇和沙丁胺醇分别联合异丙托溴铵和倍氯米松用于急性加重期慢性阻塞性肺疾病(AECOPD)患者的安全性、有效性差异。方法采用随机对照、单中心、前瞻性研究方法,选取2022年1月1日—2022年12月31日在合肥市第二人民医院呼吸内科就诊的100例AECOPD住院患者作为研究对象,利用PASS 26.0软件随机分为对照组(n=50)和试验组(n=50)。对照组使用沙丁胺醇、异丙托溴铵和倍氯米松雾化吸入治疗,试验组使用左沙丁胺醇、异丙托溴铵和倍氯米松雾化吸入治疗,比较两组患者治疗前后临床相关指标变化以及不良反应发生情况。结果试验组治疗总有效率(95.65%)高于对照组(84.00%),差异有统计学意义(P0.05);治疗后,两组24 h痰液体积、pa(CO_(2))、慢阻肺急性加重识别工具(CERT)评分、MDA、hs-CRP、IL-8、TNF-α均较本组治疗前下降,pa(O_(2))、FEV_(1)、FVC、FEV_(1)/FVC、GSH-Px、SOD较本组治疗前显著升高,差异均有统计学意义(P<0.05)。治疗后,试验组各项指标改善情况均较对照组明显(P<0.05)。在治疗过程中,对照组耐受良好,未出现明显不良反应。试验组发生头痛2例、皮疹和腹泻各1例,两组不良反应发生率相比较,差异有统计学差异(P<0.05)。结论加入左沙丁胺醇的三联药物方案用于治疗AECOPD患者的临床疗效比沙丁胺醇三联方案更好,但不良反应发生率更高,临床应用需关注其安全性。

关键词：左沙丁胺醇沙丁胺醇异丙托溴铵倍氯米松慢性阻塞性肺疾病不良反应

N/S co-doped carbon nanosheet bundles as high-capacity anode for potassium-ion battery

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Nano Research 2022年第3期15卷 2040-2046页

作者： Jinhui Cao Jiang Zhong Hanjiao Xu Shengyang Li Hongli Deng Tao wang Ling Fan xinghui wang Lei wang Jian Zhu Bingan Lu Xidong Duan Hunan Key Laboratory of Two-Dimensional Materials State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China School of Physics and Electronics Hunan UniversityChangsha 410082China College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108China

Potassium-ion batteries(PIBs)are of academic and economic significance,but still limited by the lack of highly active electrode materials for de-/intercalation of large-radius K ***,an interconnected nitrogen/sulfur co-doped carbon nanosheep bundle(N/S-CSB)was proposed as the potassium ions storage *** rich co-doping of nitrogen/sulfur of N/S-CNB with three-dimensional hierarchical bundled array structure yields distensible interlayer spaces to buffer the volume expansion during K+insertion/extraction,offers more electrochemical active sites to obtain a high specific capacity,and provides efficient channels for fast ion/electron ***,the N/S-CSB anode achieved high reversible specific capacity of 365 mAh/g obtained at 50 mA/g after 200 cycles with a coulombic efficiency(CE)close to 100%,high rate performance and long cycle ***,the in-situ Raman spectra indicated outstanding reaction kinetics of as-prepared N/S-CSB anode.

关键词： potassium-ion battery anode carbon nanosheet bundles N/S co-doping high capacity long cycle

Design and Parameter Optimization of Zero Position Code Considering Diffraction Based on Deep Learning Generative Adversarial Networks

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Nanomanufacturing and Metrology 2024年第1期7卷 15-27页

作者： Shengtong wang Linbin Luo xinghui Li Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Tsinghua-Berkeley Shenzhen Institute Tsinghua UniversityShenzhen 518055China

Absolute measurement has consistently been the primary focus in the development of precision linear and angular displace-ment *** scheme design of binary zero position codes is an important factor for absolute *** and optimizing high-bit zero position codes with over 100 bits face considerable ***,the working parameters of zero position codes[unit code width(b),distance(d),and yaw angle(α)]remarkably affect their post-installation performance,particularly in absolute positioning and limit code application in multi-degree-of-freedom measurement *** study addresses these challenges by proposing a design method for zero position codes that considers diffraction based on generative adversarial networks and aims to explore a design with increased efficiency and accuracy as well as optimization for high-bit zero position ***,the tolerance range of zero positioning per-formance for each working parameter is *** leveraging the adversarial network structure,this study generates the optimization of a 150-bit code and processes the tests of the zero position code by using simulation *** following working parameter ranges for code design are recommended on the basis of theoretical and experimental results:b greater than 10μm,d andαwithin 1000μm and 3490μrad,and avoidance of intervals with sharp changes in the full width at half *** proposed code design and parameter optimization lay a solid foundation for research and engineering appli-cations in absolute measurement field and have considerable potential for generalization and wide applicability.

关键词： Absolute measurement Zero position code Deep learning Generative adversarial networks Tolerance range Parameter optimization