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不同剂量右美托咪定对脑额叶α1和θ频率的影响

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现代生物医学进展 2018年第5期18卷 872-875页

作者：王宏玉滕秀飞麻婷婷朱俊超中国医科大学附属盛京医院麻醉科辽宁沈阳110004

目的:比较静脉滴注不同剂量盐酸右美托咪定对大脑额叶α1、θ频率定量脑电图(quantitative electroencephalography,QEEG)和血流动力学的影响。方法:选择择期下肢手术行椎管内麻醉患者60例并将其随机分为静脉输注盐酸右美托咪定0.6μg/k... 详细信息

目的:比较静脉滴注不同剂量盐酸右美托咪定对大脑额叶α1、θ频率定量脑电图(quantitative electroencephalography,QEEG)和血流动力学的影响。方法:选择择期下肢手术行椎管内麻醉患者60例并将其随机分为静脉输注盐酸右美托咪定0.6μg/kg的高剂量组(H组,n=30)和0.3μg/kg的低剂量组(L组,n=30),麻醉方式均采用腰-硬联合阻滞麻醉,入室后监测脑电图至手术结束,选取患者入室5 min时(T_0)、给药30 min时(T_1)、手术结束时(T_2)三个时刻前后无伪差脑电图60 s,观察并记录额叶θ和α1频段的功率。结果:H组血管活性药给药比例及阿托品给药次数≥2次的比例均显著高于L组(P0.05)。与T_0时刻相比,两组T_1时α1频段均下降,θ波频率升高,差别有统计学意义(P<0.05),两组T_2时α1频段和θ波频率均无明显变化。高剂量组低血压和心动过缓的发病率均高于低剂量组,差别有统计学意义(P<0.05)。结论:高、低剂量的盐酸右美托咪定对脑额叶α1和θ频率的影响相当,提示均可以预防术后认知功能障碍,但低剂量的盐酸右美托咪定对血流动力学影响更小。

关键词：盐酸右美托咪定术后认知功能障碍定量脑电图 α1、θ频率

糊辣牛肉在不同温度条件下的贮藏特性及其货架期预测

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现代食品科技 2017年第3期33卷 122-132,104页

作者：丁捷胡欣洁卢雪松何江红卢一秦文付婷婷朱金艳易宇文四川旅游学院食品学院四川成都610100 四川农业大学食品学院四川雅安625014 庄河市食品检测监测中心辽宁大连116400

以糊辣牛肉为实验材料,研究其不同贮藏温度条件下的贮藏特性和贮藏期间各品质指标的Pearson相关系数,建立了货架期预测模型。结果表明:贮藏期间产品pH值先降后升,伴随着菌落总数、TVB-N值和TBA升高,感官品质和硬度下降;贮藏温度越低,产... 详细信息

以糊辣牛肉为实验材料,研究其不同贮藏温度条件下的贮藏特性和贮藏期间各品质指标的Pearson相关系数,建立了货架期预测模型。结果表明:贮藏期间产品pH值先降后升,伴随着菌落总数、TVB-N值和TBA升高,感官品质和硬度下降;贮藏温度越低,产品品质保存越好,货架期越长;在5℃、15℃、25℃、37℃和45℃货架期分别为16.0 d、12.5 d、8.5 d、3.0 d和1.5 d;不同温度条件下菌落总数与感官品质、pH、TVB-N、TBA和硬度均呈极显著相关(p<0.01);依据贮藏特性的动态变化,开发出多元回归模型、温度与货架期关系回归模型和tTVB-N、tTVB-N和tHardness动力学货架期模型。通过模型验证发现,温度与货架期关系模型能快速有效预测5℃~25℃范围内方便菜肴糊辣牛肉货架期,相对误差范围为0.29%~2.36%;5℃~37℃范围内多元回归模型预测效果较佳,相对误差范围为1.07%~7.89%;tTVB-N、tTVB-N和tHardnes动力学货架期模型预测效果较差。

关键词：温度糊辣牛肉贮藏特性货架期

疏肝和胃方对内脏高敏感大鼠CaMKⅡ表达的影响

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上海中医药杂志 2016年第11期50卷 74-77页

作者：徐亭亭朱生樑张秀莲程艳梅上海中医药大学附属岳阳中西医结合医院消化科上海200437 上海中医药大学研究生院上海201203

目的观察疏肝和胃方对内脏高敏感钙调蛋白激酶Ⅱ(CaMKⅡ)表达的影响。方法健康雄性SD大鼠32只,随机分为模型组、疏肝和胃方组、雷贝拉唑组及空白对照组4组,每组8只。采用鸡卵清蛋白联合食管酸灌注建立内脏高敏感模型。免疫组化法观察各... 详细信息

目的观察疏肝和胃方对内脏高敏感钙调蛋白激酶Ⅱ(CaMKⅡ)表达的影响。方法健康雄性SD大鼠32只,随机分为模型组、疏肝和胃方组、雷贝拉唑组及空白对照组4组,每组8只。采用鸡卵清蛋白联合食管酸灌注建立内脏高敏感模型。免疫组化法观察各组大鼠脊髓CaMKⅡ含量的表达及阳性神经元个数。结果与空白对照组比较,模型组CaMKⅡ含量的表达、阳性神经元个数明显升高(P0.05)。结论疏肝和胃方可能通过抑制Ca MKⅡ表达降低内脏高敏感。

关键词：疏肝和胃方内脏高敏感 CaMKⅡ

前期东北大西洋-地中海西部海温异常影响河南省干热风的可能途径

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高原气象 2025年第1期44卷 150-162页

作者：竹磊磊苏晓乐潘攀吴璐杨婷中国气象局•河南省农业气象保障与应用技术重点开放实验室河南郑州450003 河南省气候中心河南郑州450003

河南省是中国冬小麦的主产区,也是较易受干热风影响的地区。目前对干热风的研究和预报多在天气尺度,从气候的角度研究干热风是否具有可预报性,具有非常重要的意义。本文基于河南省干热风资料、NCEP/NCAR再分析资料和哈得莱环流中心海温... 详细信息

河南省是中国冬小麦的主产区,也是较易受干热风影响的地区。目前对干热风的研究和预报多在天气尺度,从气候的角度研究干热风是否具有可预报性,具有非常重要的意义。本文基于河南省干热风资料、NCEP/NCAR再分析资料和哈得莱环流中心海温资料,分析了1980-2022年前期海温异常与河南省干热风日数的关系,及其可能影响途径。结果表明:(1)豫北、豫西北和豫中多年平均干热风日数较多,其他地区则相对较少。日干热风出现的概率由南向北、由5月下旬至6月上旬逐渐增加。全省平均干热风日数有显著增加趋势。(2)河南省干热风日数与当年3-4月东北大西洋-地中海西部(关键区)海温在年代际和年际尺度上均存在着密切相关,两者与干热风发生时段500 hPa高度场在去趋势前和去趋势后的显著正相关区在东亚中纬度地区位于新疆北部至贝加尔湖尔湖北部,显著负相关区位于我国东北至日本群岛附近,与850 hPa风场在去趋势前和去趋势后的相关在上述正、负显著相关区分别呈反气旋和气旋分布,气旋后部呈偏北风的显著相关,即3-4月关键区高海温年,出现的蒙古高压脊和东亚大槽造成了河南省的干热风天气。海温与环流场的相关在去趋势前和去趋势后在中纬度地区呈现出一个更明显的由东北大西洋经欧亚大陆至东北亚的纬向遥相关波列。(3)西太平洋副热带高压(以下简称副高)偏南(北)时,干热风日数易偏多(少),而3-4月关键区高(低)海温则可以导致副高偏南(北)。(4)干热风偏多年和偏少年、3-4月关键区高海温年和低海温的干热风发生时段30°N-55°N经向平均的涡度差值,及高、低海温年的干热风发生时段500 hPa准地转流函数距平和波作用通量均显示在中纬度地区存在自东北大西洋至东北亚的纬向波列。也即表明,3-4月关键区海温可以激发出一个后期干热风发生时段的类似波列,经欧亚大陆传至东北亚,而高海温年在东亚中纬度地区的环流分布造成了河南省的干热风天气。

关键词：干热风东北大西洋地中海西部海温遥相关波列

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Transmissive-detected laser speckle contrast imaging for blood flow monitoring in thick tissue: from Monte Carlo simulation to experimental demonstration

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Light(Science & Applications) 2021年第12期10卷 2492-2506页

作者： Dong-Yu Li Qing Xia ting-ting Yu Jing-Tan zhu Dan zhu Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and Technology430074 WuhanHubeiChina MoE Key Laboratory for Biomedical Photonics Huazhong University of Science and Technology430074 WuhanHubeiChina

Laser speckle contrast imaging(LSCI)is a powerful tool to monitor blood flow distribution and has been widely used in studies of microcirculation,both for animal and clinical ***,LSCI usually works on reflectivedetected ***,it could provide promising temporal and spatial resolution for in vivo applications only with the assistance of various tissue windows,otherwise,the overlarge superficial static speckle would extremely limit its contrast and ***,we systematically investigated the capability of transmissive-detected LSCI(TR-LSCI)for blood flow monitoring in thick *** Monte Carlo simulation,we theoretically compared the performance of transmissive and reflective *** was found that the reflective-detected mode was better when the target layer was at the very surface,but the imaging quality would rapidly decrease with imaging depth,while the transmissivedetected mode could obtain a much stronger signal-to-background ratio(SBR)for thick *** further proved by tissue phantom,animal,and human experiments that in a certain thickness of tissue,TR-LSCI showed remarkably better performance for thick-tissue imaging,and the imaging quality would be further improved if the use of longer wavelengths of near-infrared ***,both theoretical and experimental results demonstrate that TR-LSCI is capable of obtaining thick-tissue blood flow information and holds great potential in the field of microcirculation research.

关键词： reflective thick speckle

On Self-dual and LCD Double Circulant Codes over a Non-chain Ring

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Chinese Journal of Electronics 2019年第5期28卷 1018-1024页

作者： YAO ting zhu Shixin KAI Xiaoshan School of Mathematics Hefei University of Technology

In this paper, we study double circulant codes of length 2n over the non-chain ring R = Fq+ v Fq+v2Fq, where q is an odd prime power and v3= v. Exact enumerations of self-dual and LCD double circulant codes of length 2n over R are derived. When n is an odd prime,using random coding, we obtain families of asymptotically good self-dual and LCD codes of length 6n over Fq.

关键词： Double circulant codes Non-chain ring Self-dual codes Linear complementary dual(LCD) codes Artin conjecture

Advancement of technology towards high-performance non-aqueous aluminum-ion batteries

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Journal of Energy Chemistry 2021年第6期30卷 169-188,I0005页

作者： ting-ting Wei Panpan Peng Si-Yu Qi Yan-Rong zhu ting-Feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina

Al-ion batteries(AIBs) have been identified as one of the most hopeful energy storage systems after Li-ion batteries on account for the ultrahigh volumetric capacity,high safety and low cost from the rich abundance of ***,some inevitable shortcomings,such as the formation of passive oxide film,hydrogen side reactions and anode corrosion,finally limit the large-scale application of aqueous *** nonaqueous AIBs have been considered as one of most hopeful alternatives for high-powered electrochemical energy storage ***,various technical and scientific obstacles should be resolved because nonaqueous AIBs are still *** significant efforts have aimed to resolve these issues towards large-scale applications,and some important advancement has been *** the present review,we mainly intended to offer an overview of non-aqueous AIBs systems,and we comprehensively reviewed the recent research advancement of the cathode materials,anode materials electrolyte and collectors as well as the fundamental understanding of the functional *** addition,we have also analyzed several technical challenges and summarized the strategies used for overcoming the challenges in improving the electrochemical properties,including morphology control,surface engineering,doping and construction of composite electrodes as well as the charge storage mechanisms of the materials with different crystal *** last,future research orientation and development prospect of the AIBs are proposed.

关键词： Al-ion batteries Electrode Electrolyte Collector Electrochemical performance

Asymptotically Good Additive Cyclic Codes

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Chinese Journal of Electronics 2020年第5期29卷 859-864页

作者： YAO ting zhu Shixin KAI Xiaoshan School of Mathematics Hefei University of Technology

ZPZPs-additive cyclic codes have been proved to be asymptotically good by Yao and *** binary Hamming scheme,we introduce a type of Z2（Z2+uZ2）-additive cyclic codes generated by pairs of *** R be the chain ring Z2+uZ2,where u2=*** asymptotic rates and relative distances of this class of codes are presented by establishing the relationship between the random Z2-R-additive cyclic code and random binary quasi-cyclic code of index *** show that Z2-Radditive cyclic codes are asymptotically good.

关键词： Additive cyclic codes Random codes Relative minimum distance Asymptotically good codes

Electrochemical trepanning with an auxiliary electrode

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Chinese Journal of Aeronautics 2021年第5期34卷 183-194页

作者： ting JIANG Dong zhu Gaopan LEI National Key Laboratory of Science and Technology on Helicopter Transmission Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Electrochemical trepanning(ET)is one of the main methods for processing the blisks in ***,stray corrosion in ET has a very negative impact on the machining quality of the *** paper proposes an innovative ET method with an auxiliary electrode surrounding the inner wall of the cavity above the ***-dimensional electric-field models are established and simulations are carried out with the auxiliary electrode at different positions and different electric *** electric-field simulations show that adding the auxiliary electrode reverses the directions of the current lines in the processed area,thereby protecting *** results show that when the distance from the bottom of the auxiliary electrode to the top of the cathode tool is 3 mm and the potential difference between the auxiliary electrode and the anode workpiece is 5 V,the area corroded by stray current is *** are performed under the parameter values determined by the simulations,and they confirm that this method is effective at reducing stray ***,at a feed rate of 2.5 mm/min,the blade taper angle is decreased from 1.37°to-0.09°,the thickness of the leading and trailing edges is increased from 0.307 mm to 0.704 mm,and the average surface roughness is decreased from S_(a)=8.239μm to S_(a)=7.028μm.

关键词： Aero-engine Auxiliary electrode Current density Electrochemical trepanning Stray corrosion