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Integration of pore structure modulation and B,N co-doping for enhanced capacitance deionization of biomass-derived carbon
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作者 Yao Qiu Chunjie Zhang +7 位作者 Rui Zhang Zhiyuan Liu Huazeng Yang Shuai Qi Yongzhao Hou Guangwu Wen Jilei Liu Dong Wang 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第5期1488-1500,共13页
Biomass-derived carbon has demonstrated great potentials as advanced electrode for capacitive deionization(CDI),owing to good electroconductivity,easy availability,intrinsic pores/channels.However,conventional simple ... Biomass-derived carbon has demonstrated great potentials as advanced electrode for capacitive deionization(CDI),owing to good electroconductivity,easy availability,intrinsic pores/channels.However,conventional simple pyrolysis of biomass always generates inadequate porosity with limited surface area.Moreover,biomass-derived carbon also suffers from poor wettability and single physical adsorption of ions,resulting in limited desalination performance.Herein,pore structure optimization and element co-doping are integrated on banana peels(BP)-derived carbon to construct hierarchically porous and B,N co-doped carbon with large ions-accessible surface area.A unique expansionactivation(EA)strategy is proposed to modulate the porosity and specific surface area of carbon.Furthermore,B,N co-doping could increase the ions-accessible sites with improved hydrophilicity,and promote ions adsorption.Benefitting from the synergistic effect of hierarchical porosity and B,N co-doping,the resultant electrode manifest enhanced CDI performance for NaCl with large desalination capacity(29.5 mg g^(-1)),high salt adsorption rate(6.2 mg g^(-1)min^(-1)),and versatile adsorption ability for other salts.Density functional theory reveals the enhanced deionization mechanism by pore and B,N co-doping.This work proposes a facile EA strategy for pore structure modulation of biomass-derived carbon,and demonstrates great potentials of integrating pore and heteroatoms-doping on constructing high-performance CDI electrode. 展开更多
关键词 Capacitive deionization biomass-derived carbon Pore structure b n co-doping Desalination performance
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First-principles study of metallic carbon nanotubes with boron/nitrogen co-doping 被引量:1
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作者 陈灵娜 马松山 +2 位作者 欧阳芳平 肖金 徐慧 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第1期541-547,共7页
Using the first-principles calculations, we investigate the electronic band structure and the quantum transport properties of metallic carbon nanotubes (MCNTs) with B/N pair co-doping. The results about formation en... Using the first-principles calculations, we investigate the electronic band structure and the quantum transport properties of metallic carbon nanotubes (MCNTs) with B/N pair co-doping. The results about formation energy show that the B/N pair co-doping configuration is a most stable structure. We find that the electronic structure and the transport properties are very sensitive to the doping concentration of the B/N pairs in MCNTs, where the energy gaps increase with doping concentration increasing both along the tube axis and around the tube, because the mirror symmetry of MCNT is broken by doping B/N pairs. In addition, we discuss conductance dips of the transmission spectrum of doped MCNTs. These unconventional doping effects could be used to design novel nanoelectronic devices. 展开更多
关键词 metallic carbon nanotube b/n pairs co-doping energy gap FIRST-PRInCIPLES
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Vacancy defect MoSeTe embedded in N and F co-doped carbon skeleton for high performance sodium ion batteries and hybrid capacitors
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作者 Dehui Yang Wentao Guo +6 位作者 Fei Guo Jiaming Zhu Gang Wang Hui Wang Guanghui Yuan Shenghua Ma Beibei Wang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第3期652-664,I0014,共14页
Sodium-ion batteries(SIBs) and hybrid capacitors(SIHCs) have garnered significant attention in energy storage due to their inherent advantages,including high energy density,cost-effectiveness,and enhanced safety.Howev... Sodium-ion batteries(SIBs) and hybrid capacitors(SIHCs) have garnered significant attention in energy storage due to their inherent advantages,including high energy density,cost-effectiveness,and enhanced safety.However,developing high-performance anode materials to improve sodium storage performa nce still remains a major challenge.Here,a facile one-pot method has been developed to fabricate a hybrid of MoSeTe nanosheets implanted within the N,F co-doped honeycomb carbon skeleton(MoSeTe/N,F@C).Experimental results demonstrate that the incorporation of large-sized Te atoms into MoSeTe nanosheets enlarges the layer spacing and creates abundant anion vacancies,which effectively facilitate the insertion/extraction of Na^(+) and provide numerous ion adsorption sites for rapid surface capacitive behavior.Additionally,the heteroatoms N,F co-doped honeycomb carbon skeleton with a highly conductive network can restrain the volume expansion and boost reaction kinetics within the electrode.As anticipated,the MoSeTe/N,F@C anode exhibits high reversible capacities along with exceptional cycle stability.When coupled with Na_(3)V_(2)(PO_(4))_(3)@C(NVPF@C) to form SIB full cells,the anode delivers a reversible specific capacity of 126 mA h g^(-1) after 100 cycles at 0.1 A g^(-1).Furthermore,when combined with AC to form SIHC full cells,the anode demonstrates excellent cycling stability with a reversible specific capacity of50 mA h g^(-1) keeping over 3700 cycles at 1.0 A g^(-1).In situ XRD,ex situ TEM characterization,and theoretical calculations(DFT) further confirm the reversibility of sodium storage in MoSeTe/N,F@C anode materials during electrochemical reactions,highlighting their potential for widespread practical application.This work provides new insights into the promising utilization of advanced transition metal dichalcogenides as anode materials for Na^(+)-based energy storage devices. 展开更多
关键词 MoSeTe n F co-doped honeycomb carbon skeleton Sodium-ion batteries Sodium-ion hybrid capacitor
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Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage
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作者 Dichao Wu Jiayuan Li +5 位作者 Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun 《Carbon Energy》 SCIE EI CAS CSCD 2024年第8期232-247,共16页
Biomass‐derived carbon is a promising electrode material in energy storage devices.However,how to improve its low capacity and stability,and slow diffusion kinetics during lithium storage remains a challenge.In this ... Biomass‐derived carbon is a promising electrode material in energy storage devices.However,how to improve its low capacity and stability,and slow diffusion kinetics during lithium storage remains a challenge.In this research,we propose a“self‐assembly‐template”method to prepare B,N codoped porous carbon(BN‐C)with a nanosandwich structure and abundant pyridinic N‐B species.The nanosandwich structure can increase powder density and cycle stability by constructing a stable solid electrolyte interphase film,shortening the Li^(+)diffusion pathway,and accommodating volume expansion during repeated charging/discharging.The abundant pyridinic N‐B species can simultaneously promote the adsorption/desorption of Li^(+)/PF_(6)^(−)and reduce the diffusion barrier.The BN‐C electrode showed a high lithium‐ion storage capacity of above 1140 mAh g^(−1)at 0.05 A g^(−1)and superior stability(96.5%retained after 2000 cycles).Moreover,owing to the synergistic effect of the nanosandwich structure and pyridinic N‐B species,the assembled symmetrical BN‐C//BN‐C full cell shows a high energy density of 234.7Wh kg^(−1),high power density of 39.38 kW kg−1,and excellent cycling stability,superior to most of the other cells reported in the literature.As the density functional theory simulation demonstrated,pyridinic N‐B shows enhanced adsorption activity for Li^(+)and PF_(6)^(−),which promotes an increase in the capacity of the anode and cathode,respectively.Meanwhile,the relatively lower diffusion barrier of pyridinic N‐B promotes Li^(+)migration,resulting in good rate performance.Therefore,this study provides a new approach for the synergistic modulation of a nanostructure and an active site simultaneously to fabricate the carbon electrode material in energy storage devices. 展开更多
关键词 high cycling stability high energy density lithium‐ion batteries pyridinic nb species sandwich structure carbon nanosheet
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Heteroatom tuning in agarose derived carbon aerogel for enhanced potassium ion multiple energy storage
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作者 Kaijun Xie Xin Liu +5 位作者 Haolin Li Long Fang Kai Xia Dongjiang Yang Yihui Zou Xiaodong Zhang 《Carbon Energy》 SCIE EI CAS CSCD 2024年第3期239-254,共16页
The incorporation of heteroatoms into carbon aerogels(CAs)can lead to structural distortions and changes in active sites due to their smaller size and electronegativity compared to pure carbon.However,the evolution of... The incorporation of heteroatoms into carbon aerogels(CAs)can lead to structural distortions and changes in active sites due to their smaller size and electronegativity compared to pure carbon.However,the evolution of the electronic structure from single-atom doping to heteroatom codoping in CAs has not yet been thoroughly investigated,and the impact of codoping on potassium ion(K+)storage and diffusion pathways as electrode material remains unclear.In this study,experimental and theoretical simulations were conducted to demonstrate that heteroatom codoping,composed of multiple heteroatoms(O/N/B)with different properties,has the potential to improve the electrical properties and stability of CAs compared to single-atom doping.Electronic states near the Fermi level have revealed that doping with O/N/B generates a greater number of active centers on adjacent carbon atoms than doping with O and O/N atoms.As a result of synergy with enhanced wetting ability(contact angle of 9.26°)derived from amino groups and hierarchical porous structure,ON-CA has the most optimized adsorption capacity(−1.62 eV)and diffusion barrier(0.12 eV)of K^(+).The optimal pathway of K^(+)in ON-CA is along the carbon ring with N or O doping.As K^(+)storage material for supercapacitors and ion batteries,it shows an outstanding specific capacity and capacitance,electrochemical stability,and rate performance.Especially,the assembled symmetrical K^(+)supercapacitor demonstrates an energy density of 51.8 Wh kg^(−1),an ultrahigh power density of 443Wkg^(−1),and outstanding cycling stability(maintaining 83.3%after 10,000 cycles in 1M KPF6 organic electrolyte).This research provides valuable insights into the design of highperformance potassium ion storage materials. 展开更多
关键词 AGAROSE carbon aerogels O/n/b codoping potassium-ion battery potassium-ion supercapacitor
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Effects of Lactobacillus paracasei N1115 on gut microbial imbalance and liver function in patients with hepatitis B-related cirrhosis
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作者 Yan-Chao Hu Xiang-Chun Ding +3 位作者 Hui-Juan Liu Wan-Long Ma Xue-Yan Feng Li-Na Ma 《World Journal of Gastroenterology》 SCIE CAS 2024年第11期1556-1571,共16页
BACKGROUND Hepatitis B cirrhosis(HBC)is a chronic disease characterized by irreversible diffuse liver damage and aggravated by intestinal microbial imbalance and metabolic dysfunction.Although the relationship between... BACKGROUND Hepatitis B cirrhosis(HBC)is a chronic disease characterized by irreversible diffuse liver damage and aggravated by intestinal microbial imbalance and metabolic dysfunction.Although the relationship between certain single probiotics and HBC has been explored,the impact of the complex ready-to-eat Lactobacillus paracasei N1115(LP N1115)supplement on patients with HBC has not been determined.AIM To compare the changes in the microbiota,inflammatory factor levels,and liver function before and after probiotic treatment in HBC patients.METHODS This study included 160 HBC patients diagnosed at the General Hospital of Ningxia Medical University between October 2018 and December 2020.Patients were randomly divided into an intervention group that received LP N1115 supplementation and routine treatment and a control group that received routine treatment only.Fecal samples were collected at the onset and conclusion of the 12-wk intervention period.The structure of the intestinal microbiota and the levels of serological indicators,such as liver function and inflammatory factors,were assessed.RESULTS Following LP N1115 intervention,the intestinal microbial diversity significantly increased in the intervention group(P<0.05),and the structure of the intestinal microbiota was characterized by an increase in the proportions of probiotic microbes and a reduction in harmful bacteria.Additionally,the intervention group demonstrated notable improvements in liver function indices and significantly lower levels of inflammatory factors(P<0.05).CONCLUSION LP N1115 is a promising treatment for ameliorating intestinal microbial imbalance in HBC patients by modulating the structure of the intestinal microbiota,improving liver function,and reducing inflammatory factor levels. 展开更多
关键词 Hepatitis b cirrhosis n1115 ready-to-eat lactobacillus Inflammation Liver function Lachnospiraceae incertae sedis Probiotic
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Tuning interface mechanism of FeCo alloy embedded N,S-codoped carbon substrate for rechargeable Zn-air battery 被引量:1
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作者 Hui Chang Lulu Zhao +4 位作者 Shan Zhao Zong-Lin Liu Peng-Fei Wang Ying Xie Ting-Feng Yi 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第6期400-410,I0010,共12页
The interface mechanism between catalyst and carbon substrate has been the focus of research.In this paper,the FeCo alloy embedded N,S co-doped carbon substrate bifunctional catalyst(FeCo/S-NC)is obtained by a simple ... The interface mechanism between catalyst and carbon substrate has been the focus of research.In this paper,the FeCo alloy embedded N,S co-doped carbon substrate bifunctional catalyst(FeCo/S-NC)is obtained by a simple one-step pyrolysis strategy.The experimental results and density functional theory(DFT)calculation show that the formation of FeCo alloy is conducive to promoting electron transfer,and the introduction of S atom can enhance the interaction between FeCo alloy and carbon substrate,thus inhibiting the migration and agglomeration of particles on the surface of carbon material.The FeCo/SNC catalysts show outstanding performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).FeCo/S-NC shows a high half-wave potential(E_(1/2)=0.8823 V)for ORR and a low overpotential at 10 mA cm^(-2)(E_(j=10)=299 mV)for OER.In addition,compared with Pt/C+RuO_(2) assembled Zn-air battery(ZAB),the FeCo/S-NC assembled ZAB exhibits a larger power density(198.8 mW cm^(-2)),a higher specific capacity(786.1 mA h g_(zn)~(-1)),and ultra-stable cycle performance.These results confirm that the optimized composition and the interfacial interaction between catalyst and carbon substrate synergistically enhance the electrochemical performance. 展开更多
关键词 FeCo alloy n S co-doped carbon DFT calculation Zn-air batteries Interfacial interaction
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神经介素B及受体NMBR和PD-L1在H9N2亚型流感病毒感染过程中的相互作用研究
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作者 李春雨 田世茂 +5 位作者 孔迎迎 陈灿辉 田也 刘莎莎 陈吉龙 杨桂红 《畜牧与兽医》 CAS 北大核心 2024年第1期65-70,共6页
神经介素B(NMB)及其G蛋白偶联受体(NMBR)发挥的抗甲型流感病毒免疫反应,以及甲型流感病毒感染诱导细胞程序性死亡配体1(PD-L1)高表达均与NF-κB信号通路有直接关系,而NF-κB信号通路的激活受ERK信号通路的调控。为深入探究NMB与NMBR调节... 神经介素B(NMB)及其G蛋白偶联受体(NMBR)发挥的抗甲型流感病毒免疫反应,以及甲型流感病毒感染诱导细胞程序性死亡配体1(PD-L1)高表达均与NF-κB信号通路有直接关系,而NF-κB信号通路的激活受ERK信号通路的调控。为深入探究NMB与NMBR调节H9N2亚型流感病毒感染诱导PD-L1上的作用,本研究以H9N2亚型流感病毒为模式毒株,基于NMBR干扰和过表达细胞系、PD-L1干扰和过表达细胞系以及C57BL/6小鼠,采用RT-PCR和Western blot方法分析NMB与NMBR对PD-L1表达变化以及ERK磷酸化的影响。结果显示:H9N2亚型流感病毒感染诱导的NMBR和PD-L1表达之间存在着负调控的关系,外源性NMB可以有效激活小鼠体内NMBR的表达,进而抑制PD-L1表达,NMB与NMBR也能影响H9N2感染诱导的ERK磷酸化水平。综上,H9N2亚型流感病毒感染诱导表达的NMB与NMBR通过ERK信号通路调节PD-L1的表达而发挥抗流感病毒作用,将为深度剖析宿主-甲型流感病毒之间的互作关系提供新的科学依据。 展开更多
关键词 流感病毒 H9n2亚型 神经介素b 神经介素b受体 细胞程序性死亡配体1
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抗NMDAR脑炎中B细胞相关免疫病理机制与治疗进展
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作者 杨素格 韩松 +5 位作者 常忠正 徐营营 周晓艳 魏艳 程玲 王允 《医学综述》 CAS 2024年第9期1025-1030,共6页
抗N-甲基-D-天冬氨酸受体(NMDAR)脑炎是自身免疫性脑炎中最常见的类型之一,其发病机制与B细胞介导的体液免疫反应产生的抗NMDAR抗体有关。抗NMDAR脑炎患者B细胞表面受体互补决定区3存在特异性核酸排列顺序。CXC趋化因子配体13、白细胞介... 抗N-甲基-D-天冬氨酸受体(NMDAR)脑炎是自身免疫性脑炎中最常见的类型之一,其发病机制与B细胞介导的体液免疫反应产生的抗NMDAR抗体有关。抗NMDAR脑炎患者B细胞表面受体互补决定区3存在特异性核酸排列顺序。CXC趋化因子配体13、白细胞介素-6、白细胞介素-17在B细胞迁移和浸润过程中起重要作用。目前,临床已开始使用利妥昔单抗和托珠单抗治疗抗NMDAR脑炎。未来,深入研究抗NMDAR脑炎中B细胞成熟和克隆分化的分子机制,有助于寻找抗NMDAR脑炎的生物标志物,为疾病的早期诊断和靶向治疗提供理论支持。 展开更多
关键词 n-甲基-D-天冬氨酸受体脑炎 b细胞 b细胞库 细胞因子 单克隆抗体
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NT-proBNP对有创机械通气小儿急性呼吸衰竭28 d内死亡的预测价值研究
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作者 陈秀萍 李斯婕 +3 位作者 梁秀安 赵云柳 伍冬梅 林源 《广西医科大学学报》 CAS 2024年第4期579-584,共6页
目的:研究氧合指数(OI)和N末端B型钠尿肽前体(NT-proBNP)在儿童重症监护病房(PICU)需要有创机械通气的急性呼吸衰竭(ARF)患儿28 d内死亡的预测价值。方法:选取2017—2019年入住本院PICU的需要有创机械通气的111例ARF患儿,收集并分析患... 目的:研究氧合指数(OI)和N末端B型钠尿肽前体(NT-proBNP)在儿童重症监护病房(PICU)需要有创机械通气的急性呼吸衰竭(ARF)患儿28 d内死亡的预测价值。方法:选取2017—2019年入住本院PICU的需要有创机械通气的111例ARF患儿,收集并分析患儿临床资料,包括儿童机械通气死亡风险评分Ⅲ(PRISMⅢ)、OI、NT-proBNP、机械通气后28 d内生存情况等。采用单因素和多因素logistic回归分析评估ARF患儿28 d内死亡的危险因素。采用受试者工作特征(ROC)曲线评估NT-proBNP、OI和年龄预测28 d生存情况的效果。结果:患儿中位年龄12个月(4.5~66个月),28 d内79例存活(71.17%),32例死亡(28.83%)。与存活组相比,死亡组OI显著升高,NT-proBNP水平显著降低(均P<0.05),两组24 h内PRISMⅢ评分无显著差异(P>0.05)。多因素logistic回归分析结果显示,年龄、OI、NT-proBNP均为ARF患儿28 d内死亡的独立危险因素(P<0.05)。年龄、OI、NT-proBNP及三者联合的ROC曲线下面积(AUC)分别为0.625 0、0.603 6、0.602 8和0.657 2,年龄+OI+NT-proBNP联合具有更好的预测效果。结论:在ARF需机械通气患儿中,最初24 h的年龄、OI和NT-proBNP水平与28 d死亡风险相关;年龄、OI和NT-proBNP三者联合有助于早期识别ARF插管患儿死亡风险。 展开更多
关键词 氧合指数 n末端b型钠尿肽前体 死亡风险 儿童重症监护病房 呼吸衰竭
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华东地区首例人感染2.3.4.4b分支H5N1禽流感病毒毒株分子特征分析
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作者 邓斐 祁贤 +4 位作者 余慧燕 王慎骄 许可 黄昊頔 鲍倡俊 《江苏预防医学》 CAS 2024年第4期408-411,共4页
目的分析华东地区首例感染人的2.3.4.4b H5N1禽流感病毒分子进化基因特性。方法通过实时RT-PCR、病毒培养和序列分析,对患者痰标本和支气管肺泡灌洗液进行病毒培养和鉴定。利用Mega 6.1等软件构建系统发育树以探索病毒的进化和起源。结... 目的分析华东地区首例感染人的2.3.4.4b H5N1禽流感病毒分子进化基因特性。方法通过实时RT-PCR、病毒培养和序列分析,对患者痰标本和支气管肺泡灌洗液进行病毒培养和鉴定。利用Mega 6.1等软件构建系统发育树以探索病毒的进化和起源。结果从1例患严重呼吸道症状患者的支气管肺泡灌洗液标本中分离到1株甲型流感病毒,属于甲型H5N1禽流感2.3.4.4b分支。对该毒株进行了全基因组测序分析,8个基因组片段与2021年以来在欧亚大陆特别是中国南方流行的H5N1分离株具有极高的核苷酸序列相似性(99.1%~99.7%)。该病毒HA蛋白的226~228位氨基酸未发生突变,保留了禽类受体α2-3半乳糖苷唾液酸(SAα2-3Gal)结合特性,为高致病性禽流感H5N1病毒;其NA和M2蛋白中未发现与抗病毒药物(包括奥司他韦、扎那米韦和金刚烷)耐药性相关的突变;JS210的PB2蛋白的E627K和D701N位点以及NS1蛋白的D92E位点均未发生突变,表明该毒株对人体的适应力有限。结论分支2.3.4.4b H5N1禽流感病毒可以溢出族群感染人类并引起严重的疾病,应持续加强对禽流感病毒的监测。 展开更多
关键词 禽流感病毒 H5n1亚型 2.3.4.4b分支 人感染禽流感
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BMI指数与老年CHF患者血浆Cys-C、NT-proBNP相关性及评测预后的可行性研究
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作者 王姣 郎月 耿直 《齐齐哈尔医学院学报》 2024年第15期1423-1426,共4页
目的分析体质量指数(Body mass index,BMI)与老年慢性心力衰竭(Chronic heart failure,CHF)患者血浆胱抑素C(cystatinC,Cys-C)、N末端B型利钠肽原(N-terminal pro-B-type natriuretic peptide,NT-proBNP)水平相关性,并分析血浆Cys-C、NT... 目的分析体质量指数(Body mass index,BMI)与老年慢性心力衰竭(Chronic heart failure,CHF)患者血浆胱抑素C(cystatinC,Cys-C)、N末端B型利钠肽原(N-terminal pro-B-type natriuretic peptide,NT-proBNP)水平相关性,并分析血浆Cys-C、NT-proBNP评估老年CHF患者预后价值。方法选择2021年7月—2022年10月在本院接受治疗的192例老年慢性心力衰竭(CHF)患者作为研究对象,按照BMI指数分为肥胖组(49例)、超重组(68例)和正常组(75例)三组。对比各亚组患者血浆Cys-C、NT-proBNP水平差异,采用Pearson相关性分析的方式探究老年CHF患者BMI指数与血浆Cys-C、NT-proBNP相关性,对入组患者实施12个月随访,将患者按照预后情况区分为死亡组和存活组,对比两亚组患者血浆Cys-C、NT-proBNP水平差异并评估预后评估价值。结果肥胖组患者血浆Cys-C、NT-proBNP水平高于超重组,超重组患者血浆Cys-C、NT-proBNP水平高于正常组,差异具有统计学意义(P<0.05);入组老年CHF患者的BMI指数与其血浆Cys-C、NT-proBN水平均呈现明显的正相关性(r=0.7104,P<0.0001)(r=0.6603,P<0.0001);随访12个月显示,死亡组患者的血浆Cys-C、NT-proBNP水平显著高于存活组患者,差异具有统计学意义(P<0.05);血浆Cys-C、NT-proBNP对老年CHF预后评估曲线下面积(area under curv,AUC)为0.6930(P=0.0009)、0.7982(P<0.0001)。结论老年CHF患者随BMI指数升高,血浆Cys-C、NT-proBNP水平逐渐升高,血浆Cys-C、NT-proBNP对老年CHF临床结局具有一定的预测价值,进一步研究有推广应用于老年CHF预后评估潜力。 展开更多
关键词 体质量指数 慢性心力衰竭 胱抑素C n末端b型利钠肽原 相关性 预后评估
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CTRP3联合NT-proBNP对MVD患者发生HHcy的预测价值
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作者 李欣 张明亮 +2 位作者 曲超 邢丽婷 王嵬民 《中国实用医药》 2024年第3期68-71,共4页
目的探讨补体C1q/肿瘤坏死因子相关蛋白3(CTRP3)联合N末端B型利钠肽前体(NT-proBNP)对冠状动脉(冠脉)多支病变(MVD)患者发生高同型半胱氨酸血症(HHcy)的预测价值。方法回顾性分析200例MVD患者的临床资料,根据血浆同型半胱氨酸(Hcy)水平... 目的探讨补体C1q/肿瘤坏死因子相关蛋白3(CTRP3)联合N末端B型利钠肽前体(NT-proBNP)对冠状动脉(冠脉)多支病变(MVD)患者发生高同型半胱氨酸血症(HHcy)的预测价值。方法回顾性分析200例MVD患者的临床资料,根据血浆同型半胱氨酸(Hcy)水平是否>15μmol/L分为高Hcy组(111例)和正常Hcy组(89例)。比较两组基线资料[年龄、性别、冠心病病程、吸烟史、糖尿病病史、高血压病史、体质量指数(BMI)],生化指标(NT-proBNP、尿酸(UA)、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、Hcy、CTRP3),采用二元Logistic回归分析法分析影响MVD患者发生HHcy危险因素,绘制受试者工作特征(ROC)曲线分析CTRP3联合NT-proBNP对MVD患者发生HHcy的预测效能。结果两组年龄、高血压病史、BMI、UA、TG、TC、HDL-C比较均无统计学差异(P>0.05);高Hcy组男性患者数量70例、冠心病病程(6.66±4.49)年、吸烟史55例、糖尿病病史60例,均大于正常Hcy组的36例、(3.67±2.31)年、28例、17例,NT-proBNP(5234.95±7476.76)pg/ml、LDL-C(3.55±0.95)mmol/L、Hcy(44.75±12.48)μmol/L均高于正常Hcy组的(1296.94±3864.78)pg/ml、(2.95±0.88)mmol/L、(10.58±2.80)μmol/L,CTRP3(65.20±13.61)μg/L低于正常Hcy组的(88.69±14.94)μg/L,两组间比较差异均具有统计学意义(P<0.05)。多因素Logistic回归分析显示:男性[OR=3.745,95%CI=(1.398,10.030)]、糖尿病病史[OR=3.262,95%CI=(1.264,8.417)]、冠心病病程[OR=1.194,95%CI=(1.022,1.394)]、LDL-C[OR=2.254,95%CI=(1.337,3.800)]为导致MVD患者发生HHcy的独立危险因素,而CTRP3[OR=0.902,95%CI=(0.873,0.933)]为其独立保护因素(P<0.05)。ROC曲线结果显示:CTRP3联合NT-proBNP预测MVD患者发生HHcy的AUC为0.901,敏感度为83.8%,特异度为86.5%,优于LDL-C、NT-proBNP或CTRP3单独预测(P<0.05)。结论性别、糖尿病病史、冠心病病程、LDL-C为导致MVD患者发生HHcy的独立危险因素,而CTRP3为其独立保护因素。血清CTRP3联合NT-proBNP可提高MVD患者发生HHcy的预测价值。 展开更多
关键词 冠状动脉多支病变 高同型半胱氨酸血症 n末端b型利钠肽前体 补体C1q/肿瘤坏死因子相关蛋白3 预测价值
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Interconnected carbon nanocapsules with high N/S co-doping as stable and high-capacity potassium-ion battery anode 被引量:6
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作者 Honghui Bi Xiaojun He +3 位作者 Lei Yang Hongqiang Li Biyu Jin Jieshan Qiu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第3期195-204,I0007,共11页
Carbonaceous materials have drawn much attention in potassium-ion batteries (PIBs) due to their low price and superior physicochemical properties. However, the application of carbonaceous materials in PIB anodes is hi... Carbonaceous materials have drawn much attention in potassium-ion batteries (PIBs) due to their low price and superior physicochemical properties. However, the application of carbonaceous materials in PIB anodes is hindered by sluggish kinetics and large volume expansion. Herein, N/S co-doped carbon nanocapsule (NSCN) is constructed for superior K+ storage. The NSCN possesses 3D nanocapsule framework with abundant meso/macropores, which guarantees structural robustness and accelerates ions/electrons transportation. The high-level N/S co-doping in carbon matrix not only generates ample defects and active sites for K+ adsorption, but also expands interlayer distance for facile K+ intercalation/deintercalation. As a result, the NSCN electrode delivers a high reversible capacity (408 mAh g^(−1) at 0.05 A g^(−1)), outstanding rate capability (149 mAh g^(−1) at 5 A g^(−1)) and favorable cycle stability (150m Ah g^(−1) at 2 A g^(−1) after 2000 cycles). Ex situ TEM, Raman and XPS measurements demonstrate the excellent stability and reversibility of NSCN electrode during potassiation/depotassiation process. This work provides inspiration for the optimization of energy storage materials by structure and doping engineering. 展开更多
关键词 3D Carbon nanocapsules n/S co-doping Carbon anode Potassium-ion battery
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急性阵发性房颤患者基线NT-proBNP对胺碘酮复律疗效的影响
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作者 邓水清 黄小辉 《中国卫生标准管理》 2024年第10期142-145,共4页
目的 探讨N末端B型利钠肽原(N-terminal pro B-type natriuretic peptide,NT-proBNP)在胺碘酮用于急性阵发性房颤(acute atrial fibrillation,AF)复律疗效评估中的价值。方法纳入2019年2月—2022年7月三明市第二医院急诊科明确诊断为AF... 目的 探讨N末端B型利钠肽原(N-terminal pro B-type natriuretic peptide,NT-proBNP)在胺碘酮用于急性阵发性房颤(acute atrial fibrillation,AF)复律疗效评估中的价值。方法纳入2019年2月—2022年7月三明市第二医院急诊科明确诊断为AF(非瓣膜病)的68例患者,所有患者排除禁忌后均给予胺碘酮复律治疗,根据复律后转复情况分为2组,即成功转复组(n=57)与转复失败组(n=11)。对比2组症状与体征(心悸、胸痛)、心电图表现(是否合并ST段压低)、既往病史(是否合并糖尿病、高血压病、冠心病等)、房颤持续时间和基线NT-proBNP水平。采用二元logistic回归分析AF患者胺碘酮复律疗效的影响因素。结果 2组胸痛、合并糖尿病、合并冠心病、ST段压低、房颤持续时间、合并高血压比较,差异无统计学意义(P>0.05)。成功转复组心悸发生率为28.07%、NT-proBNP水平为(229.43±7.24)pmol/L,优于转复失败组的63.64%、(679.99±8.67)pmol/L,差异有统计学意义(P<0.05)。入院时存在心悸症状、NT-proBNP是影响AF患者应用胺碘酮转复的主要因素(P<0.05)。结论 胺碘酮对AF(非瓣膜病)患者复律治疗安全有效,入院时存在心悸症状、基线NT-proBNP水平是预测胺碘酮复律成功的重要因素。 展开更多
关键词 n末端b型利钠肽原 胺碘酮 房颤 复律 非瓣膜病 评估价值
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氮含量对Ti-B-C-N薄膜微观结构和性能的影响
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作者 陈向阳 张瑾 +1 位作者 马胜利 胡海霞 《机械工程材料》 CAS CSCD 北大核心 2024年第5期62-66,共5页
采用反应磁控溅射法在高速钢基体上制备氮原子分数分别为10.8%,15.6%,28.1%,36.4%的Ti-B-C-N薄膜,研究了氮含量对薄膜微观结构、硬度和摩擦磨损性能的影响。结果表明:Ti-B-C-N薄膜均由α-Fe和Ti(C,N)纳米晶组成,具有Ti(C,N)纳米晶镶嵌... 采用反应磁控溅射法在高速钢基体上制备氮原子分数分别为10.8%,15.6%,28.1%,36.4%的Ti-B-C-N薄膜,研究了氮含量对薄膜微观结构、硬度和摩擦磨损性能的影响。结果表明:Ti-B-C-N薄膜均由α-Fe和Ti(C,N)纳米晶组成,具有Ti(C,N)纳米晶镶嵌在非晶基体相中的纳米复合结构;随着氮含量增加,非晶相含量增加,Ti(C,N)纳米晶的含量和晶粒尺寸减小;随着氮含量增加,Ti-B-C-N薄膜的显微硬度增大,摩擦因数和磨损率均减小,表面磨痕变浅,磨损机制由剥落和微观犁削转变为微观抛光。 展开更多
关键词 反应磁控溅射 Ti-b-C-n薄膜 纳米复合结构 硬度 摩擦磨损性能
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Ultralong nitrogen/sulfur Co-doped carbon nano-hollowsphere chains with encapsulated cobalt nanoparticles for highly efficient oxygen electrocatalysis 被引量:5
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作者 Wei Zhang Xingmei Guo +6 位作者 Cong Li Jiang-Yan Xue Wan-Ying Xu Zheng Niu Hongwei Gu Carl Redshaw Jian-Ping Lang 《Carbon Energy》 SCIE CSCD 2023年第8期15-30,共16页
The development of simple and effective strategies to prepare electrocatalysts,which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction(ORR)and oxygen evolution rea... The development of simple and effective strategies to prepare electrocatalysts,which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),is currently an urgent issue.Herein,an efficient bifunctional electrocatalyst featured by ultralong N,S-doped carbon nano-hollow-sphere chains about 1300 nm with encapsulated Co nanoparticles(Co-CNHSCs)is developed.The multifunctional catalytic properties of Co together with the heteroatom-induced charge redistribution(i.e.,modulating the electronic structure of the active site)result in superior catalytic activities toward OER and ORR in alkaline media.The optimized catalyst Co-CNHSC-3 displays an outstanding electrocatalytic ability for ORR and OER,a high specific capacity of 1023.6 mAh gZn^(-1),and excellent reversibility after 80 h at 10mA cm^(-2)in a Zn-air battery system.This work presents a new strategy for the design and synthesis of efficient multifunctional carbon-based catalysts for energy storage and conversion devices. 展开更多
关键词 Co nanoparticles n S co-doping oxygen electrocatalysts rechargeable Zn-air batteries ultralong carbon nano-hollow-sphere chains
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慢性心力衰竭病人胰岛素抵抗指数与NT-proBNP、MoCA评分的相关性
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作者 张萍萍 韩宇博 +3 位作者 姚春丽 邹国良 隋艳波 刘莉 《中西医结合心脑血管病杂志》 2024年第18期3406-3409,共4页
目的:分析慢性心力衰竭(CHF)病人胰岛素抵抗指数(HOMA-IR)与N末端B型脑钠肽前体(NT-proBNP)、蒙特利尔认知评估量表(MoCA)评分的相关性。方法:选取2022年1月—2023年1月于黑龙江中医药大学附属第一医院心血管一科门诊及病房就诊的CHF病... 目的:分析慢性心力衰竭(CHF)病人胰岛素抵抗指数(HOMA-IR)与N末端B型脑钠肽前体(NT-proBNP)、蒙特利尔认知评估量表(MoCA)评分的相关性。方法:选取2022年1月—2023年1月于黑龙江中医药大学附属第一医院心血管一科门诊及病房就诊的CHF病人140例,另选取80名健康志愿者作为对照组。采用MoCA对CHF病人的认知功能进行判定,根据是否合并认知功能障碍将其分为认知功能障碍组(65例)和认知功能正常组(75例)。比较3组血清空腹血糖(FPG)、血清胰岛素(FINS)、HOMA-IR、血NT-proBNP水平及MoCA评分,分析HOMA-IR与NT-proBNP水平及MoCA评分的相关性。结果:与对照组相比,认知功能障碍组、认知功能正常组FPG、FINS、HOMA-IR、NT-proBNP水平均较对照组升高,认知功能障碍组MoCA评分则较对照组明显降低,差异均有统计学意义(P<0.05);认知功能障碍组FPG、FINS及NT-proBNP水平较认知功能正常组明显升高(P<0.05),MoCA评分则较认知功能正常组明显降低(P<0.05)。HOMA-IR与血清NT-proBNP水平呈正相关(P<0.01),与MoCA评分呈负相关(P<0.01)。结论:CHF合并认知功能障碍病人HOMA-IR明显升高,HOMA-IR与NT-proBNP水平呈正相关,与CHF病人MoCA评分呈负相关。HOMA-IR是CHF病人心功能及认知功能的独立危险因素,在治疗中应积极改善CHF病人的胰岛素抵抗水平。 展开更多
关键词 慢性心力衰竭 胰岛素抵抗指数 认知功能障碍 n末端b型脑钠肽前体 蒙特利尔认知评估量表
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继发于单纯疱疹病毒脑炎的抗NMDAR和抗GABA_(BR)双阳性自身免疫性脑炎1例报告及文献复习
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作者 赵仲艳 徐志育 +3 位作者 吴婵姬 赵二义 黄丹 黄仕雄 《吉林大学学报(医学版)》 CAS CSCD 北大核心 2024年第1期236-242,共7页
目的:分析1例单纯疱疹病毒性脑炎(HSVE)继发抗N-甲基-D-天冬氨酸受体(NMDAR)和抗γ-氨基丁酸B型受体(GABA_(BR))双阳性自身免疫性脑炎(AE)患者的临床表现及诊疗经过,以提高临床医生对该类病的认识。方法:收集1例HSVE继发抗NMDAR和抗GABA... 目的:分析1例单纯疱疹病毒性脑炎(HSVE)继发抗N-甲基-D-天冬氨酸受体(NMDAR)和抗γ-氨基丁酸B型受体(GABA_(BR))双阳性自身免疫性脑炎(AE)患者的临床表现及诊疗经过,以提高临床医生对该类病的认识。方法:收集1例HSVE继发抗NMDAR和抗GABA_(BR)双阳性AE患者的临床资料,对其诊断和治疗经过进行总结,并结合相关文献进行复习。结果:患者,男性,36岁,以头痛起病,随后出现肢体抽搐,并进展为意识障碍。入院后脑脊液常规生化检测异常,脑脊液单纯疱疹病毒1型(HSV-1) IgG抗体阳性,脑脊液和血清NMDAR抗体检测阳性,头部磁共振成像(MRI)检查提示右侧枕叶白质异常信号,诊断为HSVE继发抗NMDAR脑炎。数月后患者出现精神行为异常、认知障碍和睡眠障碍等症状,血清NMDAR抗体和GABA_(BR)抗体均阳性,诊断为HSVE继发抗NMDAR脑炎和抗GABA_(BR)脑炎。给予激素冲击和静脉注射免疫球蛋白(IVIG)治疗后,患者病情好转出院。随访1年,患者精神症状完全消失,遗留轻度认知功能障碍。结论:HSVE抗病毒治疗有效的恢复期患者临床症状再度恶化时,应高度怀疑继发AE的可能,应尽快完善自身免疫性抗体检测,以期早期诊断,早期治疗,以改善患者预后。 展开更多
关键词 单纯疱疹病毒性脑炎 n-甲基-D-门冬氨酸受体抗体 抗γ-氨基丁酸b型受体抗体 自身免疫性脑炎
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Peripheral carbazole units-decorated MR emitter containing B−N covalent bond for highly efficient green OLEDs with low roll-off
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作者 Danrui Wan Jianping Zhou +4 位作者 Guoyun Meng Ning Su Dongdong Zhang Lian Duan Junqiao Ding 《Journal of Semiconductors》 EI CAS CSCD 2024年第8期59-66,共8页
Boron−nitrogen doped multiple resonance(BN-MR)emitters,characterized by B−N covalent bonds,offer distinctive advantages as pivotal building blocks for facile access to novel MR emitters featuring narrowband spectra an... Boron−nitrogen doped multiple resonance(BN-MR)emitters,characterized by B−N covalent bonds,offer distinctive advantages as pivotal building blocks for facile access to novel MR emitters featuring narrowband spectra and high efficiency.However,there remains a scarcity of exploration concerning synthetic methods and structural derivations to expand the library of novel BN-MR emitters.Herein,we present the synthesis of a BN-MR emitter,tCz[B−N]N,through a one-pot borylation reaction directed by the amine group,achieving an impressive yield of 94%.The emitter is decorated by incorporating two 3,6-di-tbutylcarbazole(tCz)units into a B−N covalent bond doped BN-MR parent molecule via para-C−π−D and para-N−π−D conjugations.This peripheral decoration strategy enhances the reverse intersystem crossing process and shifts the emission band towards the pure green region,peaking at 526 nm with a narrowband full-width at half maximum(FWHM)of 41 nm.Consequently,organic light emitting diodes(OLEDs)employing this emitter achieved a maximum external quantum efficiency(EQEmax)value of 27.7%,with minimal efficiency roll-off.Even at a practical luminance of 1000 cd·m^(−2),the device maintains a high EQE value of 24.6%. 展开更多
关键词 MULTI-RESOnAnCE narrowband emission bn covalent bond organic light emitting diodes
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