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缺血性脑卒中患者的同型半胱氨酸、维生素B12和叶酸水平的研究

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中国医学工程 2024年第8期32卷 104-107页

作者：常莉娜高标开封市中心医院检验科河南开封475000

目的比较脑血管意外患者和非脑血管意外患者血浆中叶酸、维生素B12和同型半胱氨酸(HCY)的水平。方法选取2021年1月至2023年5月在开封市中心医院神经内科/神经外科初次/住院诊断为血栓性缺血性脑卒中的患者(n=112,病例组)及同期年龄和性... 详细信息

目的比较脑血管意外患者和非脑血管意外患者血浆中叶酸、维生素B12和同型半胱氨酸(HCY)的水平。方法选取2021年1月至2023年5月在开封市中心医院神经内科/神经外科初次/住院诊断为血栓性缺血性脑卒中的患者(n=112,病例组)及同期年龄和性别匹配的体检人群(n=120,对照组)作为研究对象。检测并比较两组研究对象的HCY、维生素B12和叶酸水平。使用Logistic回归分析缺血性脑卒中的相关因素。结果病例组的叶酸低于对照组[(7.16±5.02)ng/mL vs.(13.26±4.78)ng/mL,P<0.001],两组维生素B12比较,差异无统计学意义[(356.23±145.22)pg/mL vs.(378.24±120.49)pg/mL,P=0.281],病例组HCY高于对照组[(22.16±8.67)μmol/L vs.(13.26±3.49)μmol/L,P<0.001]。多因素Logistic回归分析显示冠状动脉疾病家族史(调整后O^R=1.32,95%CI:1.05~1.78,P=0.001)和HCY(调整后O^R=2.14,95%CI:1.32~4.13,P=0.001)为缺血性脑卒中的相关因素。结论与对照组比较,缺血性中风患者的血浆叶酸水平较低,HCY水平较高,冠状动脉疾病家族史和HCY为缺血性脑卒中的独立危险因素。

关键词：缺血性脑卒中同型半胱氨酸维生素B12 叶酸中风

Mesoporous silica anchored on reduced graphene oxide nanocomposite as anode for superior lithium-ion capacitor

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Rare Metals 2022年第2期41卷 368-377页

作者： Sherif A.El-Khodary Gokila Subburam Bo-Bo Zou Juan Wang Jing-Xia Qiu Xian-Hu Liu Dickon H.L.ng Shuang Wang Jia-biao Lian School of Energy and Power Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China Building Physics and Environment Institute Housing and Building National Research Center(HBRC)Dokki 12311CairoEgypt School of Energy and Power Engineering Institute for Energy ResearchSchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China Key Laboratory of Materials Processing and Mold(zh.ngzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China Department of Physics The Chinese University of Hong KongShatinHong Kong 999077China School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China

Mesoporous silica(mSiO_(2))has attracted great interest as anode for lithium-ion ***,the low intrinsic conductivity is a major challenge for its *** this study,a low-cost sol–gel method is employed to synthesize mesoporous silica anchored on graphene nanosheets(rGO)for lithium *** results exhibit that the nanocomposite(mSiO_(2)@rGO)with high surface area(616.45 m^(2)·g^(–1))has chemical coupling bonds(Si–O–C)between SiO2 and rGO species,which would be favorable for lithium storage upon synergistic ***,the mSiO_(2)@rGO exhibits a high specific capacity of 1119.6 mAh·g^(–1)at 0.1 A·g^(–1)with outstanding cycling stability(92.5%retention over 1400 cycles at 1.0 A·g^(–1)).

关键词： lithium cycling synergistic

Mainlobe jamming suppression via improved BSS method for rotated array radar

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Journal of Systems Engineering and Electronics 2022年第6期33卷 1151-1158页

作者： zh.ng Hailong zh.ng Gong XUE biao YUAN Jiawen Key Laboratory of Radar Imaging and Microwave Photonics Ministry of EducationNanjing University of Aeronautics and AstronauticsNanjing 210016China Nanjing Marine Radar Institute Nanjing 211153China

This study deals with the problem of mainlobe jamming suppression for rotated array *** interference becomes spatially nonstationary while the radar array rotates,which causes the mismatch between the weight and the snapshots and thus the loss of target signal to noise ratio(SNR)of pulse *** this paper,we explore the spatial divergence of interference sources and consider the rotated array radar anti-mainlobe jamming problem as a generalized rotated array mixed signal(RAMS)model *** the corresponding algorithm improved blind source separation(BSS)using the frequency domain of robust principal component analysis(FDRPCA-BSS)is proposed based on the established rotating *** can eliminate the influence of the rotating parts and address the problem of loss of ***,the measured peakto-average power ratio(PAPR)of each separated channel is performed to identify the target echo channel among the separated *** results show that the proposed method is practically feasible and can suppress the mainlobe jamming with lower loss of SNR.

关键词： mainlobe jamming blind signal separation(BSS) robust principal component analysis(RPCA) peak to average power ratio(PAPR)

Nitrogen-doped porous carbon nanofoams with enhanced electrochemical kinetics for superior sodium-ion capacitor

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Rare Metals 2022年第7期41卷 2481-2490页

作者： K.Ramachandran Gokila Subburam Xian-Hu Liu Ming-Gang Huang Chun Xu Dickon H.L.ng Ying-Xue Cui Guo-Chun Li Jing-Xia Qiu Chuan Wang Jia-biao Lian Institute for Energy Research Jiangsu UniversityZhenjiang 212013China Key Laboratory of Materials Processing and Mold(zh.ngzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China Key Laboratory of Fine Chemical Application Technology of Luzhou Luzhou 646099China Department of Physics The Chinese University of Hong KongHong Kong 999077China Jiangsu National Synergetic Innovation Center for Advanced Materials School of Chemistry and Molecular EngineeringInstitute of Advanced SynthesisNanjing Technology UniversityNanjing 211800China

Many electrochemical energy storage devices,such as batteries,supercapacitors,and metal ion capacitors,rely on effective and inexpensive electrode ***,we have developed highly active nitrogen-doped porous carbon nanofoams(NPCNs-600-N)for sodium-ion capacitors(SICs).NPCNs-600-N have a highly porous framework,extended interlayer spacing(0.41 nm),and lots of surface functional ***,NPCNs-600-N achieves a high reversible capacity(301 mAh·g^(-1)at 0.05 A·g^(-1)),superior rate capability(112 mAh·g^(-1)at 5.00 A·g^(-1)),and ultra-stable *** excellent rate and cycling performance originate from the abundant active sites and porous architecture of ***-more,SICs device is constructed by employing the NPCNs-600-N as the battery-like anode and commercial superconductive carbon black as the capacitive cathode,which delivers high energy/power densities of 92 Wh·kg^(-1)/15984 W·kg^(-1)with a remarkable cyclability(93%reten-tion over 5000 cycles at 1.00 A·g^(-1)).The methodology of the work enables the simultaneous tuning of the porous architectures and surface function groups of carbon for high-performance SICs.

关键词： Carbon nanofoams Nitrogen-doping Porous structure Kinetics analysis Sodium-ion capacitors

Fe_(2)TiO_(5)nanochains as anode for high-performance lithium-ion capacitor

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Rare Metals 2021年第9期40卷 2424-2431页

作者： Rong Kang Wang-Qin zhu Sheng Li Bo-Bo Zou Liao-Liao Wang Guo-Chun Li Xian-Hu Liu Dickon H.L.ng Jing-Xia Qiu Yan zhao Fen Qiao Jia-biao Lian Key Laboratory of zhenjiang Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China Key Laboratory of Materials Processing and Mold(zh.ngzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China Department of Physics The Chinese University of Hong KongShatinHong Kong 999077China

The unique crystal structure and multiple redox couples of iron titanate(Fe_(2)TiO_(5)) provide it a high theoretical capacity and good cycling stability when used as an electrode. In this study, the electrospinning method is employed to synthesize one-dimensional(1 D) Fe_(2)TiO_(5) nanochains. The as-prepared Fe_(2)TiO_(5) nanochains exhibited superior specific capacity(500 mAh·g^(-1) at 0.10 A·g^(-1)),excellent rate performance(180 mAh·g^(-1) at 5.00 A·g^(-1)),and good cycling stability(retaining 100% of the initial specific capacity at a current density of 1.00 A·g^(-1) after1000 cycles). The as-assembled Fe_(2)TiO_(5)/SCCB lithiumion capacitor(LIC) also delivered a competitive energy density(137.8 Wh·kg^(-1))andpowerdensity(11,250 W·kg^(-1)). This study proves that the as-fabricated1 D Fe_(2)TiO_(5) nanochains are promising anode materials for high-performance LICs.

关键词： Lithium-ion capacitors High energy/power densities Anode material Fe_(2)TiO_(5)nanochains Electrospinning

温度、盐度和密度对菲律宾蛤仔稚贝生长和存活的影响

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中国海洋大学学报（自然科学版） 2024年第1期54卷 58-66页

作者：吴磊涂康周丽青刘志鸿吴彪孙秀俊中国水产科学研究院黄海水产研究所山东青岛266071 青岛海洋科学与技术试点国家实验室海洋渔业科学与食物产出过程功能实验室山东青岛266237 江苏海洋大学海洋科学与水产学院江苏连云港222005 莆田市水产研究所福建莆田351100

为查明温度、盐度和密度对菲律宾蛤仔(Ruditapes philippinarum)稚贝生长和存活的影响,本研究通过响应面法构建了不同环境条件下蛤仔生长存活模型并进行分析。实验设计了3因素(温度、盐度、密度)和3水平(-1、0、1),以稚贝壳长为响应值,... 详细信息

为查明温度、盐度和密度对菲律宾蛤仔(Ruditapes philippinarum)稚贝生长和存活的影响,本研究通过响应面法构建了不同环境条件下蛤仔生长存活模型并进行分析。实验设计了3因素(温度、盐度、密度)和3水平(-1、0、1),以稚贝壳长为响应值,探究温度、盐度、密度三因素及其相互作用对蛤仔稚贝生长和存活的影响。研究表明,培育73 d后,温度、盐度、密度的二次效应对蛤仔稚贝的壳长生长影响极显著(P0.05)。壳长预测值Y对应自变量温度(T)、盐度(S)和密度(D)的二次多项回归方程:Y=-6.33105+0.2765 T+0.573 S+0.689 D-0.00566 T^(2)-0.0137 S^(2)-0.1159 D^(2)。本研究通过二次响应面回归方程构建了不同环境下蛤仔苗种的生长模型,得出稚贝最适生长环境为温度24.32℃、盐度21.13、密度2.88×10^(4)粒/m^(2),在此条件下蛤仔稚贝平均壳长可达到最大值(4.07 mm)。

关键词：菲律宾蛤仔温度盐度密度生长

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基于CO_(2)活化的竹基多孔炭催化还原Cr(VI)的性能研究

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林产化学与工业 2024年第3期44卷 61-68页

作者：连媛王汉琛方兆丰何晨露黄彪林冠烽福建农林大学材料工程学院福建福州350002

以竹粉为原料、CO_(2)为活化剂制备竹基多孔炭(zh-100),并用于催化还原Cr(VI)。分析了反应温度、催化剂用量、还原剂甲酸用量、Cr(VI)初始质量浓度对竹基多孔炭催化活性的影响,采用XPS、XRD和交流阻抗测试技术对反应前后的多孔炭进行表... 详细信息

以竹粉为原料、CO_(2)为活化剂制备竹基多孔炭(zh-100),并用于催化还原Cr(VI)。分析了反应温度、催化剂用量、还原剂甲酸用量、Cr(VI)初始质量浓度对竹基多孔炭催化活性的影响,采用XPS、XRD和交流阻抗测试技术对反应前后的多孔炭进行表征,以揭示其催化还原Cr(VI)的作用机制。结果表明:竹基多孔炭催化还原Cr(VI)的最佳实验条件为Cr(VI)初始质量浓度120 mg/L、温度60℃、zh-100炭催化剂添加量0.1 g,还原剂甲酸添加量1.5 mL,在该条件下反应10 min,Cr(VI)还原率高达99.44%;重复使用3次后,zh-100的催化还原能力略有下降,但仍能在30 min内达到99.22%的Cr(VI)还原率。分析发现,Cr(VI)的去除过程包括物理吸附和化学还原,其中以化学还原占主导;催化剂重复使用性能下降原因包括表面官能团消耗、碳微晶排列无序化及阻抗增大,zh-100对Cr(VI)的催化还原机制为官能团介导和类石墨微晶介导。

关键词：竹粉竹基多孔炭铬催化

基于荧光纳米颗粒的免疫层析技术同步快速检测药食同源药材中的3种真菌毒素

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现代食品科技 2024年第7期40卷 227-235页

作者：霍炳帆马骉厉佳丽梅青周宇欣张明洲中国计量大学生命科学学院浙江杭州310018 杭州快格科技有限公司浙江杭州310002

该研究建立了一种基于铕纳米粒子(Europium Nanoparticles,EuNPs)的超灵敏侧向流动免疫层析(Lateral Flow Immunochromatography,LFIC)方法,用于药食同源药材中黄曲霉毒素B1(Aflatoxin B1,AFB1)、玉米赤霉烯酮(Zearalenone,ZEN)和赭曲霉毒素A(Ochratoxin A,OTA)的同步快速检测。通过优化人工抗原包被质量浓度、人工抗原划膜位置、羊抗鼠IgG包被质量浓度、缓冲液pH值和免疫反应时间等关键因素,在简单的样品前处理步骤后,能够实现单个待测样品中3种目标真菌毒素的超灵敏联合检测。结果显示,该方法特异性良好,灵敏度高,AFB1、ZEN和OTA标准品的肉眼检测限分别为0.5、4.0、2.0 ng/mL,线性范围(IC10~IC90)分别为0.03~4.61、0.12~8.47、0.09~8.26 ng/mL。该方法用于人参、黄芪和当归中真菌毒素的测定,样品平均添加回收率为90.02%~109.39%,相对标准偏差(RSD)小于8.50%,实际样品检测结果与高效液相色谱法符合率达100%。因此,该研究构建的EuNPs-LFIC方法适用于药食同源药材中的AFB1、ZEN与OTA等真菌毒素的现场快速监测。

关键词：铕纳米粒子侧向流动免疫层析真菌毒素同时检测

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UPLC-MS/MS法测定人血清中曲唑酮浓度及其临床个体化用药

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中国药物警戒 2024年第9期21卷 991-997页

作者：曹银周旋戴彪邓逸芸闫春宇单锋夏清荣梁俊安徽医科大学附属心理医院合肥市第四人民医院药剂科安徽省精神卫生中心精神药理研究室安徽合肥230022

目的建立超高效液相串联质谱法(UPLC-MS/MS)测定患者血清中曲唑酮浓度,并用于曲唑酮的临床个体化用药。方法色谱柱为MSCB-2A(2.1 mm×50 mm,2.5μm);流动相为甲醇(B)-水(A,含0.01%氨水),梯度洗脱(梯度设置为0~0.2 min,55%B;0.2~2.0 mi... 详细信息

目的建立超高效液相串联质谱法(UPLC-MS/MS)测定患者血清中曲唑酮浓度,并用于曲唑酮的临床个体化用药。方法色谱柱为MSCB-2A(2.1 mm×50 mm,2.5μm);流动相为甲醇(B)-水(A,含0.01%氨水),梯度洗脱(梯度设置为0~0.2 min,55%B;0.2~2.0 min,55%~95%B;2.0~2.5 min,95%~95%B;2.5~2.6 min,95%~55%B;2.6~3.0 min,55%~55%B),流速0.5 m L·min^(-1),柱温40℃,进样量0.1μL;离子源:电喷雾离子源;电离模式:正离子模式。血清经乙腈沉淀蛋白,地西泮为内标,对本方法的专属性、标准曲线和定量下限、精密度与回收率、基质效应和稳定性进行相应的考察。同时将该方法应用于16例使用曲唑酮患者的血药浓度测定,并对检测结果进行分析,给出相应的干预意见。结果血清中曲唑酮在10.0~1 500.0 ng·m L^(-1)内线性关系良好(R2=0.999 4);低、中、高3组不同质控浓度(50.0、400.0、1 000.0 ng·m L^(-1))日内和日间精密度的相对标准偏差(RSD)均小于7%,准确度为91.90%~98.67%;低、中、高浓度的曲唑酮血清在常温下4 h、2~8℃冰箱冷藏24 h、长期冷冻3个月以及反复冻融循环条件下稳定性良好,在各条件下准确度为95.04%~105.78%。该法已成功应用于曲唑酮临床样本治疗药物监测。结论 UPLC-MS/MS法检测曲唑酮血药浓度具有快速简便、稳定准确、灵敏度高、污染小等优点,该法可应用于曲唑酮临床个体化用药。

关键词：曲唑酮 UPLC-MS/MS 治疗药物监测血药浓度人血清个体化用药

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