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MWCNT-分散固相萃取-气相色谱-串联质谱法检测茶油中11种有机磷农药残留

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湖南师范大学自然科学学报 2017年第2期40卷 49-55页

作者：张帆白珊王美玲张莹黄志强李忠海钟海雁长沙环境保护职业技术学院中国长沙410004 湖南省检验检疫科学技术研究院中国长沙410004 中南林业科技大学食品科学与工程学院中国长沙410004

建立了分散固相萃取净化-气相色谱-串联质谱测定茶油中11种有机磷农药残留的分析方法.样品采用乙腈提取,羧基化多壁碳纳米管和中性氧化铝混合吸附剂富集和净化,能够有效去除茶油中脂肪等杂质对测定结果的影响.本方法中11种有机磷农药在0... 详细信息

建立了分散固相萃取净化-气相色谱-串联质谱测定茶油中11种有机磷农药残留的分析方法.样品采用乙腈提取,羧基化多壁碳纳米管和中性氧化铝混合吸附剂富集和净化,能够有效去除茶油中脂肪等杂质对测定结果的影响.本方法中11种有机磷农药在0.01~0.5 mg/L范围内,线性良好,相关系数为0.999 61~0.999 96;在0.02~0.1 mg/kg范围内,11种目标物的回收率为86.2%~112.6%,RSD为3.2%~11.2%.

关键词：多壁碳纳米管分散固相萃取气相色谱-串联质谱茶油有机磷农药

fMRI-based Decoding of Visual Information from Human Brain Activity: A Brief Review

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International Journal of Automation and computing 2021年第2期18卷 170-184页

作者： Shuo huang Wei Shao mei-ling Wang Dao-Qiang Zhang College of Computer Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China MIIT Key Laboratory of Pattern Analysis and Machine Intelligence Nanjing 211106China

One of the most significant challenges in the neuroscience community is to understand how the human brain *** progress in neuroimaging techniques have validated that it is possible to decode a person′s thoughts,memories,and emotions via functional magnetic resonance imaging(i.e.,fMRI)since it can measure the neural activation of human brains with satisfied spatiotemporal ***,the unprecedented scale and complexity of the fMRI data have presented critical computational bottlenecks requiring new scientific analytic *** the increasingly important role of machine learning in neuroscience,a great many machine learning algorithms are presented to analyze brain activities from the fMRI *** this paper,we mainly provide a comprehensive and up-to-date review of machine learning methods for analyzing neural activities with the following three aspects,i.e.,brain image functional alignment,brain activity pattern analysis,and visual stimuli *** addition,online resources and open research problems on brain pattern analysis are also provided for the convenience of future research.

关键词： Functional magnetic resonance imaging(fMRI) functional alignment brain activity brain decoding visual stimuli reconstruction

Influence of Annealing Time on the Microstructure and Properties of Pb(Zr_(0.53)Ti_(0.47))O_3 Thin Films

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Journal of Wuhan University of Technology(Materials Science) 2012年第1期27卷 88-91页

作者： huang ling MAO Wei huang Zhixiong SHI Minxian mei Qinlin School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

The PZT thin films were prepared on （111）- Pt/Ti/SiO2/Si substrates by sol-gel method, and lead acetate [Pb（CH3COO）2], zirconium nitrate [Zr（NO3）4] were used as raw materials. The X-ray diffractometer （XRD） and scanning electron microscopy （SEM） were used to characterize the phase structure and surface morphology of the films annealed at 650 ~C but with different holding time. Ferroelectric and dielectric properties of the films were measured by the ferroelectric tester and the precision impedance analyzer, respectively. The PZT thin films were constructed with epoxy resin as a composite structure, and the damping properties of the composite were tested by dynamic mechanical analyzer （DMA）. The results show that the films annealed for 90 minutes present a dense and compact crystal arrangement on the surface; moreover, the films also achieve their best electric quality. At the same time, the largest damping loss factor of the composite constructed with the 90 mins-annealed film shows peak value of 0.9, hi^her than the pure epoxy resin.

关键词： sol-gel method Pb(Zr0.53Ti0.47)O3 thin film surface feature ferroelectric and dielectricproperty damping property

Low-level laser acupuncture reduces postoperative pain and morphine consumption in older patients with total knee arthroplasty: A randomized placebo-controlled trial

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Journal of Integrative Medicine 2022年第4期20卷 321-328页

作者： Chiung-Hui huang mei-ling Yeh Fang-Pey Chen Daphne Wu Department of Nursing Taipei Veterans General HospitalTaipei City 11217TaiwanChina School of Nursing National Taipei University of Nursing and Health SciencesTaipei City 11219TaiwanChina Center for Traditional Medicine Taipei Veterans General HospitalTaipei City 11217TaiwanChina Scool of Nursing National Taipei University of Nursing and Health Sciences and School of MedicineTaipei City 11217TaiwanChina

Background: Patients commonly develop postoperative pain after total knee arthroplasty(TKA).Acupuncture-related techniques and low-level laser therapy could be beneficial for pain management for older ***: To examine the effect of low-level laser acupuncture(LA) in reducing postoperative pain, painrelated interference in daily life, morphine consumption, and morphine-related side effects in older patients with knee osteoarthritis who underwent ***, setting, participants and intervention: A single-blind randomized placebo-controlled trial was conducted. Patients(N = 82) were recruited and randomly assigned via a computer-generated list to the LA group or a placebo group. The LA group received low-level laser therapy at Sanyinjiao(SP6), Taixi(KI3),Kunlun(BL60), Fengshi(GB31), Futu(ST32) and Neiguan(PC6) after TKA, while the placebo acupuncture group received the same treatment procedure without laser energy *** outcome measures: The primary outcome was postoperative pain intensity, and it was measured at baseline and hours 2, 6, 10, 24, 48 and 72 after TKA. The secondary outcomes, including relative pain,postoperative pain-related interference in daily life and morphine consumption, were measured at hours24, 48 and 72 after ***: Generalized estimating equations revealed significant between-group differences in pain intensity(P = 0.01), and trend differences in pain intensity for the LA group starting at hours 10 to 72(P < 0.05)and morphine consumption at hours 48 and 72(P < 0.05). The changes in pain-related interference in daily life were significant(P < 0.05) at 72 h, with the exception of the parameters for worst pain, mood,and sleep. Nausea and vomiting side effects from morphine had significant between-group differences at hours 10 and 24(P < 0.05).Conclusion: Low-level LA gradually reduced older patients’ postoperative pain intensity and morphine consumption within the first 72 h after their TKA for osteoarthritis. Low-le

关键词： Acupuncture Morphine Low-level laser Older patients Osteoarthritis Pain Total knee arthroplasty Randomized controlled trial

Drawing-upsetting-extrusion-clinching of high-strength steel and aluminum alloy

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Journal of Iron and Steel Research International 2023年第10期30卷 1974-1986页

作者： ling-feng Luo Shang-yu huang mei Yang Jian-hua Hu Bing Ou School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070HubeiChina Hubei Engineering Research Center for Green Precision Material Forming Wuhan University of TechnologyWuhan 430070HubeiChina Shanghai Technician School Shanghai 200437China

To realize good point connection between high-strength steel and aluminum alloy,a process of drawing-upsetting-extrusion-clinching was ***,the sheets were drawn;then,the bottom of the protrusion part was extruded,forming the necessary initial interlock;and finally,the protrusion part was reverse press clinched,forming a certain height of the clinched *** DP980 high-strength steel and A15083 aluminum alloy as the connection objects and using the method of numerical simulation combined with experimental test,the mold was made,and the experiment was carried out on the basis of numerical *** experimental results proved the feasibility of the process and the effectiveness of the numerical *** simulation and experimental results show that the necessary interlock in the drawing-upsetting-extrusion stage is the premise of effective *** relative protrusion height should be around 55.6%after *** best comprehensive mechanical properties measured by strength test were shear resistance of 2644 N,fatigue life of 24,535 times and peel resistance of 1522 *** failure analysis,the relationship between the interlock Tu and the neck thickness Tn of the joint with the best comprehensive mechanical properties was established as Tu=*** design method of die and process parameters when the sheet thickness changes was researched by numerical *** results show that the clearance between the punch and the die and the bottom thickness are directly proportional to the sheet thickness,and the drawing depth is directly proportional to the punch radius.

关键词： Clinching High-strength steel Aluminum alloy Process parameter Joint strength

极速脉搏波技术在评估体重指数与颈动脉弹性相关性中的价值

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现代医学 2018年第1期46卷 1-4页

作者：吴林琳朱正球栾云刘牛张玫玫李惠玲黄辉南京中医药大学附属医院超声医学科江苏南京210029

目的:探讨利用极速脉搏波技术(uf PWV)评估体重指数(BMI)与颈动脉弹性相关性的价值。方法:收集我院体检人群277例,测量身高、体重、血压及血脂、血糖(GLU),并计算BMI,检测颈动脉内中膜厚度(IMT),再利用uf PWV测量颈动脉收缩早期脉搏波... 详细信息

目的:探讨利用极速脉搏波技术(uf PWV)评估体重指数(BMI)与颈动脉弹性相关性的价值。方法:收集我院体检人群277例,测量身高、体重、血压及血脂、血糖(GLU),并计算BMI,检测颈动脉内中膜厚度(IMT),再利用uf PWV测量颈动脉收缩早期脉搏波传导速度(BS)、收缩末期脉搏波传导速度(ES)。依据BMI将研究对象分为3组:超重组76例(151条颈动脉)、肥胖组22例(43条颈动脉)及正常体重组179例(357条颈动脉)。结果:(1)正常组与超重组比较,ES差异有统计学意义(P0.05);肥胖组与正常组或超重组比较,BS、ES、IMT差异均有统计学意义(P<0.05)。(2)利用多元线性回归分析校正年龄、血压等混杂因素,将肥胖组与正常组或超重组进行两两比较,BS、ES、IMT差异仍有统计学意义(均P<0.05)。(3)BMI与BS、ES、IMT的相关性分析显示,ES的相关系数(0.403)明显大于BS、IMT。结论:uf PWV技术与IMT相比,在显示血管弹性与BMI的相关性上更敏感。uf PWV技术可作为定量评估动脉弹性及粥样硬化的新型有效手段。

关键词：体重指数极速脉搏波成像颈动脉弹性颈动脉内中膜厚度

在盐的水溶液中非电解质的活度系数的研究——Ⅴ.无机盐对于邻硝基苯甲酸在水中溶度的影响

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化学学报 1963年第4期 277-283页

作者：楊旦关宏美刘瑞麟黄子卿北京大学化学系

在25°,作者测定邻硝基苯甲酸在九种盐（NaCl,KCl,LiBr,NaBr,KBr,KNO3,KSCN,NaClO4和（CH3）4NBr）溶液中的溶度。关于邻硝基苯甲酸根离子在这些盐溶液中的平均活度系数,作者仿照前人作某些假設,从而計算出該酸的未离解分子在盐溶液中... 详细信息

在25°,作者测定邻硝基苯甲酸在九种盐（NaCl,KCl,LiBr,NaBr,KBr,KNO3,KSCN,NaClO4和（CH3）4NBr）溶液中的溶度。关于邻硝基苯甲酸根离子在这些盐溶液中的平均活度系数,作者仿照前人作某些假設,从而計算出該酸的未离解分子在盐溶液中的活度系数fu。在本文所用的盐浓度Cs范围（从0到0.5n或1.5n）,log fu对Cs的曲綫都是直綫。比較直綫的斜度值,得邻硝基苯甲酸的未离解分子的盐析次序: NaCl>LiBr>NaBr>KCl>KBr>KNO3>NaClO4>KSCN>（CH3）4NBr 其中硝酸鉀和高氯酸鈉的次序,只在本文的假設无誤时才正确。具同阴离子的盐,如溴化物的次序符合阳离子大小的次序。具同阳离子的盐,如鉀盐的次序符合阴离子大小的次序。

关键词：盐溶液非电解质活度系数热力学性质邻硝基苯甲酸溶度

热休克蛋白27在耳蜗基底膜上的表达及其意义

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听力学及言语疾病杂志 2006年第3期14卷 193-194,201,T0001页

作者：梅玲黄治物凡启军肖伯奎武汉大学人民医院耳鼻咽喉-头颈外科武汉430060

目的探讨热休克蛋白27(HSP27)在耳蜗基底膜上的分布及意义。方法应用免疫荧光标记技术和激光扫描共聚焦显微镜技术(laserscanningconfocalmicroscopy,LSCM)检测HSP27在正常成年大鼠耳蜗基底膜上的表达。结果HSP27主要表达于耳蜗基底膜Co... 详细信息

目的探讨热休克蛋白27(HSP27)在耳蜗基底膜上的分布及意义。方法应用免疫荧光标记技术和激光扫描共聚焦显微镜技术(laserscanningconfocalmicroscopy,LSCM)检测HSP27在正常成年大鼠耳蜗基底膜上的表达。结果HSP27主要表达于耳蜗基底膜Corti器中外毛细胞的表皮板及其侧壁、内外柱细胞表面、外柱细胞的头、体及其足板,而内毛细胞及其它支持细胞上未见其表达。结论在发育成熟的正常耳蜗中,HSP27主要是通过稳定肌动蛋白微丝的正常结构,维持细胞骨架的稳定,维持耳蜗内活性氧在正常水平及执行分子伴侣的功能,保护细胞,从而达到维持耳蜗正常生理功能的作用。

关键词：热休克蛋白27 基底膜激光扫描共聚焦显微镜外毛细胞

DISTRIBUTIONS OF SULFUR POLLUTANTS IN EAST ASIA

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Chinese Geographical Science 2000年第1期10卷 39-44页

作者： Hui-wang Gao mei-yuan huang Jun-ling An asteur.ivic.ve

A Eulerian sulfur deposition model is used to study the distributions of sulfur pollutants in East Asia, in which important physical and chemical processes such as transport, diffusion, dry and wet deposition, vertical transportation in cumulus cloud, gas phase chemistry, aqueous phase chemistry and heterogeneous aerosol chemistry are included. Two cases, the periods of 1987.07.02 GMT00-1987 07 03 GMT00(case 1) and 1989 04 20 GMT00-1989 04 21 GMT00(case 2), are studied and the distributions of SO 2 and SO 2- 4 in East Asia are shown. It is revealed that the patterns of distributions of SO 2 and SO 2- 4 are different under different meteorological conditions. In the upper layer, the concentrations of SO 2 and SO 2- 4 are 0.4-1.0?μg/m 3 and 0.2-0.5?μg/m 3, 4.0-10.0?μg/m 3 and 2.0-6.0?μg/m 3 in the middle layer. In the surface layer, the levels of SO 2 range from 4.0 to 30.0?μg/m 3 and from 2.0 to 8.0?μg/m 3 for SO 2- 4. Distributions of SO x are controlled by emissions in the surface layer, while in the upper layer it is mainly affected by precipitation. The distributions of SO x show the interaction of emissions, winds and precipitation in the middle layer.

关键词： sulfur pollutants deposition model East Asia, sulfur distribution