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Cu/Mo2C synthesized through Anderson-type polyoxometalates modulate interfacial water structure to achieve hydrogen evolution at high current density

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Nano Research 2024年第4期17卷 2546-2554页

作者： Dunyuan Jin fen Qiao Yan Zhou Junfeng Wang Kecheng cao Jing Yang Jikang Zhao Lei Zhou Haitao Li School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China School of Physical Science and Technology and Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China Institute for Energy Research Jiangsu UniversityZhenjiang 212013China

The development of efficient non-precious metal catalysts is important for the large-scale application of alkaline hydrogen evolution reaction(HER).Here,we synthesized a composite catalyst of Cu and Mo_(2)C(Cu/Mo_(2)C)using Anderson-type polyoxometalates(POMs)synthesized by the facile soaking method as precursors.The electronic interaction between Cu and Mo_(2)C drives the positive charge of Cu,alleviating the strong adsorption of hydrogen at the Mo site by modulating the d-band center of Mo_(2)C.By studying the interfacial water structure using in situ attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS),we determined that the positively charged Cu crystals have the function of activating water molecules and optimizing the interfacial water structure.The interfacial water of Cu/Mo_(2)C contains a large amount of free water,which could facilitate the transport of reaction intermediates.Due to activated water molecules and optimized interfacial water structure and hydrogen adsorption energy,the overpotential of Cu/Mo_(2)C is 24 mV at a current density of 10 mA·cm^(-2) and 178 mV at a current density of 1000 mA·cm^(-2).This work improves catalyst performance in terms of interfacial water structure optimization and deepens the understanding of water-mediated catalysis.

关键词： electrocatalytic hydrogen production interfacial water charge transport d band center in situ attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS)

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Metallaphotoredox-Catalyzed Three-Component Couplings for Practical Synthesis of Ureas and Carbamates

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Chinese Journal of Chemistry 2024年第3期42卷 264-270页

作者： Ernest Koranteng Zhen-cao Shu Yi-Yin Liu Qian Yang Bin Shi Qiang-Xian Wu fen Tan Liang-Qiu Lu Wen-Jing Xiao Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of EducationCollege of ChemistryCentral China Normal University152 Luoyu RoadWuhanHubei430079 China Wuhan Youji Industries Co. LtdNo.1 2nd Chemical Rd.WuhanHubei430082 China Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients School of Chemistry and Life SciencesHubei University of EducationWuhanHubei430205 China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouGansu730000 China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiangHenan453007 China Wuhan Institute of Photochemistry and Technology WuhanHubei430082 China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032 China

Ureas are widely used in drugs,materials and catalysts because of their diamide structure,which can form strong hydrogen bonds.Therefore,it is of great scientific significance to develop efficient and green methods for the synthesis of urea compounds,especially unsymmetrical ureas.Here,we have disclosed novel and highly efficient three-component coupling reactions of organic halides,sodium cyanate and amines enabled by nickel/photoredox dual catalysis for the preparation of unsymmetrical ureas.The reaction features simple and safe operations,broad substrate scopes,and product diversities.It allows the facile synthesis of N-aryl/vinyl ureas from readily available,user-friendly feedstocks under mild conditions(27 examples,36%—98%yields).In addition,this method is further derived to alcohols as nucleophiles to synthesize a series of carbamates(15 examples,40%—95%yields).The mechanism experiment shows that the isocyanate produced by the coupling of halide and sodium cyanate may be the key intermediate in this reaction.

关键词： Cross-coupling Nickel Photoredox catalysis Three-component reaction Ureas Carbamates

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Combining electroacupuncture and transcranial direct current stimulation as an adjuvant therapy enhances spontaneous conversation and naming in subacute vascular aphasia:A retrospective analysis

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Journal of Integrative Medicine 2022年第3期20卷 244-251页

作者： Samwel Sylvester Msigwa Yan Li Xiang-lin Cheng fen cao Department of Neurology the Clinical Medicine School of Yangtze Universitythe First Affiliated Hospital of Yangtze UniversityJingzhou 424023Hubei ProvinceChina Department of Research and Training Mirembe National Mental Health HospitalP.O.Box 910DodomaTanzania Department of Rehabilitation The First Affiliated Hospital of Yangtze UniversityJingzhou 424023Hubei ProvinceChina

Objective:Emerging evidence shows the effectiveness of speech and language therapy(SLT);however,precise therapeutic parameters remain unclear.Evidence for the use of adjunctive transcranial direct current stimulation(t DCS)to treat post-stroke aphasia(PSA)is promising;however,the utility of combining t DCS and electroacupuncture(EA)has not yet been analyzed.This study assessed the therapeutic consequences of EA and t DCS coupled with SLT in subacute PSA patients who were also undergoing hyperbaric oxygen therapy(HBOT).Methods:A retrospective analysis was conducted on subacute(<6 months)PSA patients who were divided into three groups:patients who received EA plus t DCS(acupuncture group),patients who underwent t DCS(t DCS group),and patients who experienced conventional therapy(HBOT+SLT).All subjects underwent 21 days of treatment and also received conventional treatment.The aphasia battery of Chinese(ABC)was used to score pre-and post-intervention status.Results:The analysis comprised 238 patients.Cerebral infarction was the most frequent stroke type(137[57.6%]),while motor(66[27.7%])and global aphasia(60[25.2%])were the most common types of aphasia.After 21 days of intervention,the ABC scores of all patients were improved.The acupuncture group had the highest ABC scores,but only repetition,naming,and spontaneous speech were statistically improved(P<0.01).Post-hoc tests revealed significant improvement in word retrieval in the acupuncture and t DCS groups(P<0.01,P=0.037),while the acupuncture group had additional significant improvement in spontaneous conversation(P<0.01).Conclusion:Combining acupuncture and t DCS as an adjuvant therapy for subacute PSA led to significant spontaneous speech and word retrieval improvements.Future prospective,multi-ethnic,multi-center trials are warranted.

关键词： Aphasia Stroke rehabilitation Acupuncture Electroacupuncture Transcranial direct current stimulation Speech therapy

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Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH2

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Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun fen Xu Yu-Mei Luo Yong-Peng Xia Sheng Wei Chen-Chen Zhang Ri-Guang Cheng Chao-feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong cao Hong-Ge Pan School of Material Science and Engineering Guilin University of Electronic Technology School of Chemistry and Chemical Engineering Changsha University of Science and Technology Institute of Science and Technology for New Energy Xi'an Technological University

The conjugation of external species with twodimensional（2D） materials has broad application prospects.In this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen storage.Specifically,the MgH2-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 181 0C,which is 230 0C lower than that of pristine MgH2.Under the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from（133.5 ± 17.5） to（34.58 ± 1.87） kJ·mol-1,and the hydrogenation apparent activation energy is reduced from（70.41 ± 7.43） to（25.78 ± 4.64） kJ·mol-1,which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt% at 100℃ and 6.06 wt% at 150℃ within 300 s,respectively.The mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg2Ni and Mg2NiH4could act as a "hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen atoms.Moreover,in the dehydrogenation process,the element Pd reacts with MgH2to form the MgPd alloy phase,which makes MgH2take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation kinetics.The synergistic effect of Mg-Pd,Mg2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH2-Ni-MOF@Pd.Our findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

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感染性胰腺坏死并发腹腔及消化道出血的诊治

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中国实用外科杂志 2024年第5期44卷 541-544页

作者：曹锋卢炯地李非首都医科大学宣武医院普通外科、首都医科大学急性胰腺炎临床诊疗与研究中心北京100053

出血是导致感染性胰腺坏死病人后期死亡的主要原因。在坏死性胰腺炎病程中,坏死范围局限包裹或不断蔓延扩大都将对周围器官血管形成侵袭压迫导致腹腔或消化道出血;而病人自身的凝血功能异常和手术干预等增加了出血风险。腹腔出血的常见... 详细信息

出血是导致感染性胰腺坏死病人后期死亡的主要原因。在坏死性胰腺炎病程中,坏死范围局限包裹或不断蔓延扩大都将对周围器官血管形成侵袭压迫导致腹腔或消化道出血;而病人自身的凝血功能异常和手术干预等增加了出血风险。腹腔出血的常见类型包括假性动脉瘤破裂和囊肿内出血等;消化道出血的常见类型为急性胃黏膜病变和溃疡出血,胰源性门静脉高压出血和内镜支架相关出血等。临床医师应在多学科诊疗的基础上,根据病人病情变化趋势,出血部位、类型及时采取不同的治疗措施改善预后,保守治疗仅适用于出血少、生命体征稳定的病人,多数病人仍需及时行内镜、介入栓塞或手术干预治疗。

关键词：急性胰腺炎感染性胰腺坏死腹腔出血消化道出血诊断与治疗

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奈玛特韦/利托那韦相关不良反应文献分析

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中国新药杂志 2024年第9期33卷 952-960页

作者：张伊楠武明芬李草赵志刚首都医科大学附属北京天坛医院药学部北京100070 首都医科大学药学院临床药学系北京100069

目的:分析奈玛特韦/利托那韦相关药物不良反应(adverse drug reaction, ADR)的特点,为临床合理用药提供参考。方法:检索建库起至2023年1月中国知网、万方数据库、维普网、PubMed、Web of Science数据库,收集奈玛特韦/利托那韦相关ADR个... 详细信息

目的:分析奈玛特韦/利托那韦相关药物不良反应(adverse drug reaction, ADR)的特点,为临床合理用药提供参考。方法:检索建库起至2023年1月中国知网、万方数据库、维普网、PubMed、Web of Science数据库,收集奈玛特韦/利托那韦相关ADR个案报道,提取文献资料进行统计分析。结果:共纳入文献17篇,共计18例患者。其中男性6例,女性12例,患者年龄为14~80岁,其中71~80岁年龄段比例最高。2例怀疑为奈玛特韦/利托那韦导致的ADR,累及神经系统和心脏器官;16例为与其他药物相互作用导致的ADR,相互作用药物为免疫抑制剂11例,钙通道阻滞剂2例,抗肿瘤药物、抗精神病药、血脂调节剂各1例。经停药或对症支持治疗均治愈。结论:奈玛特韦/利托那韦的安全性仍需要进一步监测与研究,临床使用中需重点关注可能的药物相互作用,减少ADR的发生。

关键词：奈玛特韦利托那韦新型冠状病毒不良反应药物相互作用

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基于CARAH预警系统对8种马铃薯晚疫病新型杀菌剂的防效评估

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西南农业学报 2024年第4期37卷 707-713页

作者：霍超曹继芬韩伟君胡慧芬王乾徐小波赵志坚云南省农业科学院经济作物研究所昆明650205 云南省植保植检站昆明650200

[目的]筛选马铃薯晚疫病防控新型高效绿色杀菌剂及生物农药,为科学合理使用高效杀菌剂开展马铃薯晚疫病绿色防控提供指导。[方法]在优化的马铃薯晚疫病CARAH预警系统指导下,采用随机区组设计对6种新型杀菌剂及2种植物源农药在马铃薯主... 详细信息

[目的]筛选马铃薯晚疫病防控新型高效绿色杀菌剂及生物农药,为科学合理使用高效杀菌剂开展马铃薯晚疫病绿色防控提供指导。[方法]在优化的马铃薯晚疫病CARAH预警系统指导下,采用随机区组设计对6种新型杀菌剂及2种植物源农药在马铃薯主栽品种合作88上进行大春马铃薯晚疫病田间药效评估,评价不同杀菌剂对马铃薯叶部和茎部的晚疫病防效。从预测中心病株开始,晚疫病每完成一代侵染进行一次防控。[结果]预警系统预测合作88将在7月2-4日出现中心病株,田间调查显示,对照处理7月3日出现马铃薯晚疫病中心病株,优化的预警系统预测中心病株出现时间的准确率达100%;根据预警系统指导,从7月1日第一次施药至8月30日最后一次施药共开展9次防控。对马铃薯叶部和茎部晚疫病调查显示:8种杀菌剂对马铃薯叶部和茎部晚疫病的防效分别在85.50%和87.50%以上,其中31%噁酮·氟噻唑的防效最高,分别达到95.00%和96.75%;植物源杀菌剂0.3%丁子香酚的防效较高,分别达到90.50%和92.50%。预警系统指导下应用8种杀菌剂对马铃薯增产显著,增产幅度在116.29%~257.69%,对照处理的商品薯率仅为38.27%,杀菌剂防控的商品薯率为71.60%~79.94%。[结论]CARAH系统测报与田间晚疫病的实际发生高度吻合,可精准指导晚疫病防控。6种化学杀菌剂和2种植物源农药对马铃薯晚疫病均有较高防效,推荐在生产中用于晚疫病防控,尤其是植物源农药丁子香酚替代化学杀菌剂的应用可以显著减少化学杀菌剂的使用量。

关键词：马铃薯晚疫病化学杀菌剂植物源农药田间防效 CARAH预警系统

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基于用户权威度和多特征融合的微博谣言检测模型

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计算机工程与科学 2024年第4期46卷 752-760页

作者：许莉芬曹霑懋郑明杰肖博健华南师范大学计算机学院广东广州510631 华南师范大学人工智能学院广东佛山528200

网络谣言的广泛传播及其对社会的负面影响急切需要高效的谣言检测模型。由于数据集的文本缺乏语义信息和严格的句法结构,结合用户特征和语境特征来丰富语义信息显得很有意义。对此,提出一种基于用户权威度和多特征融合的微博谣言检测模... 详细信息

网络谣言的广泛传播及其对社会的负面影响急切需要高效的谣言检测模型。由于数据集的文本缺乏语义信息和严格的句法结构,结合用户特征和语境特征来丰富语义信息显得很有意义。对此,提出一种基于用户权威度和多特征融合的微博谣言检测模型MRUAMF。首先,抽取出用户信息完整度、用户活跃度、用户交际广度和用户平台认证指数4项指标构建用户权威度定量计算模型,通过级联用户权威度及其构成指标,并使用2层全连接网络融合特征,有效量化用户特征。其次,考虑到语境对谣言理解的有效性,提取相关语境特征。最后,使用BERT预训练模型提取文本特征,并结合多模态适应门MAG融合用户特征、语境特征与文本特征。在微博数据集上进行的实验表明,相比基线模型,MRUAMF模型的检测性能更优,准确率达0.941。

关键词：谣言检测 BERT MAG 用户权威度层次分析法

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多发性骨髓瘤患者化疗期间感染炎症指标及FcγRIIA基因多态性与预后的关联

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中华医院感染学杂志 2024年第11期34卷 1711-1714页

作者：张玉芬李曼雪仲杰曹乃月山东大学齐鲁医院(青岛)血液科山东青岛266000 山东大学齐鲁医院(青岛)骨科山东青岛266000

目的探究多发性骨髓瘤患者化疗期间感染炎症指标及FcγRIIA基因多态性与预后的关联.方法回顾性分析2020年1月-2023年2月山东大学齐鲁医院(青岛)55例多发性骨髓瘤化疗期间感染患者(研究组)与65例多发性骨髓瘤化疗期间未感染患者(对照组)... 详细信息

目的探究多发性骨髓瘤患者化疗期间感染炎症指标及FcγRIIA基因多态性与预后的关联.方法回顾性分析2020年1月-2023年2月山东大学齐鲁医院(青岛)55例多发性骨髓瘤化疗期间感染患者(研究组)与65例多发性骨髓瘤化疗期间未感染患者(对照组)的临床资料,研究组根据预后情况分为预后良好组(29例)和预后不良组(26例);检测患者静脉血中性粒细胞与淋巴细胞比值(NLR)、单核细胞和淋巴细胞比值(MLR)与血小板淋巴细胞比值(PLR)、降钙素原(PCT)、FcγRIIA基因多态性.结果研究组静脉血NLR、MLR、PLR、PCT均高于对照组;预后不良组静脉血NLR、MLR、PLR、血清PCT均高于预后良好组(P<0.05);研究组FcγRIIA-R型占比高于对照组,FcγRIIA-H型占比低于对照组(P<0.05);预后不良组FcγRIIA-R型占比高于预后良好组,FcγRIIA-H型占比低于预后良好组(P<0.05).结论临床多发性骨髓瘤患者化疗期间感染及不良预后与静脉血NLR、MLR、PLR、PCT水平异常升高有关,且FcγRIIA基因多态性与多发性骨髓瘤患者化疗期间感染的发生及不良预后有明显关系.

关键词：多发性骨髓瘤化疗感染致炎指标 FcγRIIA 基因多态性

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Interleukin 17A deficiency alleviates neuroinflammation and cognitive impairment in an experimental model of diabetic encephalopathy

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Neural Regeneration Research 2022年第12期17卷 2771-2777页

作者： Xiao-Xia Fang fen-fen Xu Zhan Liu Bei-Bei cao Yi-Hua Qiu Yu-Ping Peng Department of Physiology School of Medicineand Co-innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina

Interleukin 17A(IL-17A)was previously shown to be a key pro-inflammatory factor in diabetes mellitus and associated complications.However,the role of IL-17A in diabetic encephalopathy remains poorly understood.In this study,we established a mouse model of diabetic encephalopathy that was deficient in IL-17A by crossing Il17a-/-mice with spontaneously diabetic Ins2^(Akita)(Akita)mice.Blood glucose levels and body weights were monitored from 2-32 weeks of age.When mice were 32 weeks of age,behavioral tests were performed,including a novel object recognition test for assessing short-term memory and learning and a Morris water maze test for evaluating hippocampus-dependent spatial learning and memory.IL-17A levels in the serum,cerebrospinal fluid,and hippocampus were detected with enzyme-linked immunosorbent assays and real-time quantitative polymerase chain reaction.Moreover,proteins related to cognitive dysfunction(amyloid precursor protein,β-amyloid cleavage enzyme 1,p-tau,and tau),apoptosis(caspase-3 and-9),inflammation(inducible nitric oxide synthase and cyclooxygenase 2),and occludin were detected by western blot assays.Pro-inflammatory cytokines including tumor necrosis factor-α,interleukin-1β,and interferon-γin serum and hippocampal tissues were measured by enzyme-linked immunosorbent assays.Microglial activation and hippocampal neuronal apoptosis were detected by immunofluorescent staining.Compared with that in wild-type mice,mice with diabetic encephalopathy had higher IL-17A levels in the serum,cerebrospinal fluid,and hippocampus;downregulation of occludin expression;lower cognitive ability;greater loss of hippocampal neurons;increased microglial activation;and higher expression of inflammatory factors in the serum and hippocampus.IL-17A knockout attenuated the abovementioned changes in mice with diabetic encephalopathy.These findings suggest that IL-17A participates in the pathological process of diabetic encephalopathy.Furthermore,IL-17A deficiency reduces diabetic encephalopathy-mediated neuroinflammati

关键词： Akita mice apoptosis cognitive impairment diabetic encephalopathy hippocampus interleukin 17A mice microglia neuroinflammation neuron targeted treatment

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