检索结果-南通市图书馆

Recent advances in paired electrolysis coupling CO_(2) reduction with alternative oxidation reactions

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第2期77卷 406-419,I0011页

作者： Deng Li Jiangfan Yang juhong lian Junqing Yan Shengzhong(Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina College of Chemistry and Materials Science Weinan Normal UniversityWeinan 714099ShaanxiChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Electrocatalytic CO_(2) reduction reaction(CO_(2)RR)holds great promise in green energy conversion and ***,for current CO_(2) electrolyzers that rely on the oxygen evolution reaction,a large portion of the input energy is"wasted"at the anode due to the high overpotential requirement and the recovery of low-value *** make efficient use of the electricity during electrolysis,coupling CO_(2)RR with anodic alternatives that have low energy demands and/or profitable returns with high-value products is then ***,we review the latest advances in paired systems for simultaneous CO_(2) reduction and anode *** start with the cases integrating CO_(2)RR with concurrent alternative oxidation,such as inorganic oxidation using chloride,sulfide,ammonia and urea,and organic oxidation using alcohols,aldehydes and primary *** paired systems that couple CO_(2)RR with on-site oxidative upgrading of CO_(2)-reduced chemicals are also *** coupling mechanism,electrochemical performance and economic viability of these co-electrolysis systems are ***,we then point out the mismatch issues between the cathodic and anodic reactions regrading catalyst ability,electrolyte solution and reactant supply that will challenge the applications of these paired electrolysis *** to address these issues are further proposed,providing some guidance for future research.

关键词： Electrolysis Coupling Reaction CO_(2)Utilization Co-Valorization

Metal-seed assistant photodeposition of platinum over Ta_(3)N_(5) photocatalyst for promoted solar hydrogen production under visible light

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第4期30卷 444-448页

作者： juhong lian Deng Li Yu Qi Nengcong Yang Rui Zhang Tengfeng Xie Naijia Guan Landong Li Fuxiang Zhang School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina College of Chemistry Jilin UniversityChangchun 130012JilinChina

Cocatalysts play a vital role in accelerating the reaction kinetics and improving the charge separation of photocatalysts for solar hydrogen *** promotion of the photocatalytic activity largely relies on the loading approach of the ***,we introduce a metal-seed assistant photodeposition approach to load the hydrogen evolution cocatalyst of platinum onto the surface of Ta_(3)N_(5) photocatalyst,which exhibits about 3.6 times of higher photocatalytic proton reduction activity with respect to the corresponding impregnation or photodeposition *** on our characterizations,the increscent contact area of the cocatalyst/semiconductor interface with metal-seed assistant photodeposition method is proposed to be responsible for the promoted charge separation as well as enhanced photocatalytic H2 evolution *** is interesting to note that this innovative deposition strategy can be easily extended to loading of platinum cocatalyst with other noble or non-noble metal seeds for promoted activities,demonstrating its good *** work may provide an alternative way of depositing cocatalyst for better photocatalytic performances.

关键词： Tantalum nitride Cocatalyst Charge separation Contact interface Metal-seed assistant photodeposition Solar hydrogen production

Reversed configuration of photocatalyst to exhibit improved properties of basic processes compared to conventional one

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2020年第6期63卷 771-776页

作者： juhong lian Yu Qi Yunfeng Bao Zixi Yin Yang Zhang Nengcong Yang Naijia Guan Shengye Jin Landong Li Fuxiang Zhang State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023China School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials(iChEM) Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Performances of semiconductor photocatalysts are integrally determined by efficiencies of basic processes such as light absorption,charge separation and surface catalysis,but conventional configurations of photocatalysts normally suffers from the competition of light absorption originating from cocatalyst deposition and limited interface charge separation between the photocatalyst and *** we give the first proof-of-concept illustration that a reversed configuration of photocatalysts with a core/shell structure of microsized Mo2N cocatalysts and nanosized CdS photocatalysts,which exhibits superior solar hydrogen production to the conventional configuration with nanosized Mo2N cocatalysts deposited on the surface of CdS *** is revealed that the reversed configuration outperforms the conventional one in all areas of light absorption,charge separation and surface ***,the special core/shell structure introduced here can well avoid the competition of light absorption by cocatalysts and make an effective confinement effect to promote the surface catalysis of *** finding provides an alternative strategy to improve performances of photocatalysts.

关键词： photocatalyst nitride semiconductor renewable hydrogen core/shell

Unexpectedly selective hydrogenation of phenylacetylene to styrene on titania supported platinum photocatalyst under 385 nm monochromatic light irradiation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2020年第4期41卷 598-603页

作者： juhong lian Yuchao Chai Yu Qi Xiangyang Guo Naijia Guan Landong Li Fuxiang Zhang School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina

Conversion of alkynes to alkenes by photocatalysis has inspired extensive interest but it is still challenging to obtain both high conversion and *** we first demonstrate the photocatalytic conversion of phenylacetylene(PLE)to styrene(STE)with both high conversion and selectivity by using the titania(TiO2)supported platinum(Pt)as photocatalyst under 385 nm monochromatic light *** is demonstrated that the conversion rate of PLE is strongly dependent on the content of Pt cocatalyst loaded on the surface of *** on our optimization,the conversion of PLE and the selectivity towards STE on the 1 wt%Pt/TiO2 photocatalyst can unexpectedly reach as high as 92.4%and 91.3%,*** highly selective photocatalytic hydrogenation can well be extended to the conversion of other typical alkynes to alkenes,demonstrating the generality of selective hydrogenation of C≡C over the Pt/TiO2 photocatalyst.

关键词： Phenylacetylene Titania Selective Hydrogenation Photocatalysis Cocatalyst

HPLC法测定周氏方黄酮部位异槲皮苷和黄芩苷的含量

在线全文

学校读者我要写书评

暂无评论

中国医药导报 2013年第12期10卷 103-105页

作者：刘亚萍焦菊红尹莲南京中医药大学附属第一医院江苏南京210029 南京中医药大学江苏南京210046

目的定量分析周氏克金岩方(周氏方)中黄酮部位异槲皮苷和黄芩苷的含量,为制订周氏方质量标准提供依据。方法采用高效液相色谱法,色谱柱为Platisil ODS色谱柱(250 mm×4.6 mm,5μm),柱温30℃,流速1.0 mL/min。流动相为乙腈-0.1%醋酸水溶... 详细信息

目的定量分析周氏克金岩方(周氏方)中黄酮部位异槲皮苷和黄芩苷的含量,为制订周氏方质量标准提供依据。方法采用高效液相色谱法,色谱柱为Platisil ODS色谱柱(250 mm×4.6 mm,5μm),柱温30℃,流速1.0 mL/min。流动相为乙腈-0.1%醋酸水溶液,梯度洗脱,检测波长为270 nm。结果异槲皮苷和黄芩苷线性范围分别为0.536～4.020μg(r=0.9990)、0.285～2.850μg(r=0.9999);平均加样回收率分别为100.92%和101.97%(n=6)。周氏方黄酮部位中异槲皮苷和黄芩苷的平均含量分别是1.13%和0.25%。结论本方法简便易行,结果准确可靠,适用于周氏方有效部位异槲皮苷和黄芩苷的含量测定及质量控制。

关键词：周氏方异槲皮苷黄芩苷

在线全文

学校读者我要写书评

暂无评论

免疫检查点抑制剂相关肺炎的临床诊治建议

中国肺癌杂志 2019年第10期22卷 621-626页

作者：王汉萍郭潇潇周佳鑫段炼斯晓燕张丽李玥刘小伟王孟昭施举红张力中国医学科学院北京协和医院呼吸内科北京100730 中国医学科学院北京协和医院心内科北京100730 中国医学科学院北京协和医院风湿免疫科北京100730 中国医学科学院北京协和医院内分泌科北京100730 中国医学科学院北京协和医院检验科北京100730 中国医学科学院北京协和医院消化内科北京100730 中国医学科学院北京协和医院眼科北京100730

免疫检查点抑制剂在肿瘤中的使用给晚期肿瘤患者带来了新的希望。然而,由免疫检查点抑制剂激活的免疫系统,其中主要是T细胞免疫,可能攻击人体正常组织器官导致相应的免疫毒性反应产生,在肺部可引起免疫检查点抑制剂相关肺炎。这是一类... 详细信息

免疫检查点抑制剂在肿瘤中的使用给晚期肿瘤患者带来了新的希望。然而,由免疫检查点抑制剂激活的免疫系统,其中主要是T细胞免疫,可能攻击人体正常组织器官导致相应的免疫毒性反应产生,在肺部可引起免疫检查点抑制剂相关肺炎。这是一类不同于已知肺部间质性肺炎的疾病,如处理不当,有潜在的致命风险。我们将对免疫检查点抑制剂相关肺炎的诊断和治疗给予建议。

关键词：免疫检查点抑制剂免疫相关不良反应检查点抑制剂相关肺炎

肿瘤靶向治疗和免疫治疗——眼科系统毒性反应的诊治

在线全文

学校读者我要写书评

暂无评论

中国肺癌杂志 2019年第10期22卷 653-660页

作者：刘小伟王铮赵潺王汉萍郭潇潇周佳鑫段炼斯晓燕张丽李玥王孟昭施举红张美芬张力中国医学科学院北京协和医学院眼科北京100730 北京医院眼科北京100730 中国医学科学院北京协和医学院呼吸内科北京100730 中国医学科学院北京协和医学院心内科北京100730 中国医学科学院北京协和医学院风湿免疫科北京100730 中国医学科学院北京协和医学院内分泌科北京100730 中国医学科学院北京协和医学院检验科北京100730 中国医学科学院北京协和医学院消化内科北京100730

靶向治疗和免疫治疗给晚期肿瘤患者带来了希望。但是治疗过程中的药物毒副作用也随着药物的普及而逐渐展现出来。其中眼部的毒副反应常被患者和医生忽视。眼部的不良反应包括从眼睑、睫毛、结膜、角膜、葡萄膜、视网膜、视神经和眼眶等... 详细信息

靶向治疗和免疫治疗给晚期肿瘤患者带来了希望。但是治疗过程中的药物毒副作用也随着药物的普及而逐渐展现出来。其中眼部的毒副反应常被患者和医生忽视。眼部的不良反应包括从眼睑、睫毛、结膜、角膜、葡萄膜、视网膜、视神经和眼眶等,可累及眼部的所有组织。本文就靶向治疗和免疫治疗相关的眼部毒副作用的诊断和治疗给予相应的描述和建议。

关键词：靶向治疗免疫检查点抑制剂免疫相关不良反应眼部疾病

在线全文

学校读者我要写书评

暂无评论

基因编辑技术在家畜育种中的研究进展

中国畜牧杂志 2021年第11期57卷 45-50页

作者：邹菊红邹剑伟申玉建冯雪萍连子童徐建建宋颖胡艳张瑜黄艳娜蒋钦杨广西大学动物科学技术学院广西南宁530004

基因编辑技术可以从分子水平上对某个基因进行定点修饰,从而带给生物体长久的可遗传的变异,被广泛运用于生命科学研究以及临床应用。目前基因编辑的DNA核酸酶主要有锌指核酸酶(Zinc Finger Nucleases,ZFNs)、转录激活因子样效应物核酶(T... 详细信息

基因编辑技术可以从分子水平上对某个基因进行定点修饰,从而带给生物体长久的可遗传的变异,被广泛运用于生命科学研究以及临床应用。目前基因编辑的DNA核酸酶主要有锌指核酸酶(Zinc Finger Nucleases,ZFNs)、转录激活因子样效应物核酶(Transcription Activator-Like Effector Nucleases,TALENs)和成簇规则间隔的短回文重复序列/Cas9系统(Clustered Regularly Interspaced Short Palindromic Repeats,CRISPRs/Cas9)。这些DNA核酸酶通过在预定的基因组位点诱导双链断裂来提高DNA突变率而介导靶向的遗传改变,可用来改良动物性状,在家畜育种中发挥极大作用。本文综述了几种基因编辑工具的基因结构、作用原理、几种技术之间的差异及在家畜育种中的应用情况,为基因编辑技术在家畜育种中的研究提供参考。

关键词：基因编辑技术家畜 ZFNs TALENs CRISPR/Cas9系统

努比亚山羊Myf6基因的克隆及组织表达研究

在线全文

学校读者我要写书评

暂无评论

中国畜牧兽医 2021年第11期48卷 4084-4093页

作者：宋颖张叁保申玉建胡艳张瑜邹菊红徐建建连子童邹剑伟韦英明郑自华蒋钦杨广西大学动物科学技术学院南宁530004 广西大学农牧产业发展研究院南宁530004

研究旨在克隆努比亚山羊生肌因子6(Myf6)基因,并对其进行生物信息学分析,检测Myf6基因在努比亚山羊不同组织的表达差异以及努比亚山羊和隆林山羊背最长肌组织的表达差异。以努比亚山羊背最长肌组织cDNA为模板,PCR扩增获得Myf6基因的完... 详细信息

研究旨在克隆努比亚山羊生肌因子6(Myf6)基因,并对其进行生物信息学分析,检测Myf6基因在努比亚山羊不同组织的表达差异以及努比亚山羊和隆林山羊背最长肌组织的表达差异。以努比亚山羊背最长肌组织cDNA为模板,PCR扩增获得Myf6基因的完整编码区(CDS)后进行菌液验证,并进行序列相似性比对以及系统进化树构建;分析Myf6蛋白理化性质并预测其亲/疏水性,预测蛋白二级结构和三级结构。采用实时荧光定量PCR检测Myf6基因在努比亚山羊心脏、肝脏、脾脏、肾脏、背最长肌、皮下脂肪、瘤胃以及隆林山羊背最长肌中的表达。结果显示,努比亚山羊Myf6基因CDS序列长729 bp,编码242个氨基酸。努比亚山羊Myf6氨基酸序列与绵羊、黄牛、猪、驴、人、小鼠的相似性分别为99.3%、98.8%、94.1%、93.8%、93.4%和89.0%。蛋白理化性质分析结果表明,山羊Myf6蛋白的分子质量为26.98 ku,为不稳定酸性蛋白;亲疏水性分析发现,该蛋白为亲水蛋白;跨膜结构和信号肽预测结果发现,该蛋白不含有跨膜结构和信号肽,不属于跨膜蛋白和分泌蛋白;二级结构预测结果显示,该蛋白主要由无规则卷曲(49.59%)构成,其次为α-螺旋(33.88%)、延伸链(9.50%)和β-转角(7.02%),三级结构预测结果与二级结构一致。实时荧光定量PCR结果显示,Myf6基因在努比亚山羊背最长肌的表达量最高,显著高于其他组织(P0.05);对比努比亚山羊和隆林山羊背最长肌的Myf6基因的表达情况发现,努比亚山羊的表达量显著高于隆林山羊(P<0.05)。试验为进一步揭示Myf6基因在肌肉分化中的作用提供了参考。

关键词：山羊 Myf6基因克隆组织表达