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New Complexiton Solutions of （2＋1）-Dimensional Nizhnik-Novikov-Veselov Equations

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Communications in Theoretical Physics 2006年第3X期46卷 407-414页

作者： zhang Yuan-Yuan zheng ying zhang Hong-Qing Department of Applied Mathematics Dalian University of Technology Dalian 116024 China

In this paper, we extend the multiple Riccati equations rational expansion method by introducing a new ansatz. Using this method, many complexiton solutions of the （2＋ 1 ）-dimensional Nizhnik-Novikov-Veselov equations are obtained which include various combination of hyperbolic and trigonometric periodic function solutions, various combination of hyperbolic and rational function solutions, various combination of trigonometric periodic and rational function solutions, etc. The method can be also used to solve other nonlinear partial differential equations.

关键词： rational expansion method (2+1)-dimensional Nizhnik-Novikov-Veselov equations complexiton solutions

Differentially expressed miRNAs in anthers may contribute to the fertility of a novel Brassica napus genic male sterile line CN12A

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Journal of Integrative Agriculture 2020年第7期19卷 1731-1742页

作者： DONG Yun WANG Yi JIN Feng-wei XING Lijuan FANG Yan zhang zheng-ying ZOU Jun-jie WANG Lei XU Miao-yun Crop Research Institute Gansu Academy of Agricultural SciencesLanzhou 730070P.R.China National Key Facility for Crop Gene Resources and Genetic ImprovementBiotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Gansu Provincial Key Lab of Aridland Crop Sciences/Gansu Agricultural University Lanzhou 730070.P.R.China

In Brassica napus L.(rapeseed),complete genic male sterility(GMS)plays an important role in the utilization of *** microRNAs(miRNAs)play essential regulatory roles during bud development,knowledge of how GMS is regulated by miRNAs in rapeseed is rather *** this study,we obtained a novel recessive GMS system,*** sterile line CN12A has defects in tapetal diferentiation and *** sequencing was employed to examine the expression of miRNAs in the buds of CN12A and the fertile line *** identifed 85 known miRNAs and 120 novel miRNAs that were expressed during rapeseed anther *** comparing the expression levels of miRNAs between CN12A and CN12B,19 and 18 known miRNAs were found to be difrentially expressed in 0.5--1.0 mm buds and in 2.5--3.0 mm buds,*** these,the expression levels of 14 miRNAs were higher and the levels of 23 miRNAs were lower in CN12A compared with *** predicted target genes of these iferentially expressed miRNAS encode protein kinases,F-box domain-containing proteins,MADS-box family proteins,SBP-box gene family members,HD ZIP proteins,floral homeotic protein APETAL A 2(AP2)。and nuclear factor Y,subunit *** targets have previously been reported to be involved in pollen development and male sterility,suggesting that miRNAs might act as regulators of GMS in rapeseed ***,RT-qPCR data suggest that one of the dffrentially expressed miRNAs,bna-miR159,plays a role in tapetal differentiation by regulating the expression of transcription factor BnMYB101 and participates in tapetal degradation and infuences callose degradation by manipulating the expression of *** findings contibute to our understanding of the roles of miRNAs during anther development and the occurrence of GMS in rapeseed.

关键词： Brassica napus L. genic male sterility miRNAs targets molecular regulation network

NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

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Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou ying Xiaoli Si Naijia Xue Yi Liu Ran zheng ying Chen Jiali Pu Baorong zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

Epidural fentanyl decreases the minimum local analgesic concentration of epidural lidocaine

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Chinese Medical Journal 2012年第22期125卷 3977-3980页

作者： zhang Jian zheng Yue-ying FENG Zhi-ying CHEN Chao-qin ZHU Sheng-mei Department of Anesthesiology First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouZhejiang 310003China

Background Epidural lidocaine can be used when regional anesthesia needs to be established quickly, but the effect of co-administering epidural fentanyl on the minimum local analgesic concentration （MLAC） of lidocaine is not known. We compared the MLAC of epidural lidocaine in combination with different doses of fentanyl for epidural anesthesia in adults. Methods One hundred and twenty patients requiring epidural analgesia were randomly allocated to receive 20 ml of one of four solutions： lidocaine, or lidocaine plus fentanyl 1 pg/ml, 2 pg/ml, or 3 pg/ml. The first patient in each group was administered 1% lidocaine weight by volume; subsequent patients received a concentration determined by the response of the previous patient to a higher or lower concentration according to up and down sequential allocation in 0.1% increments. Efficacy was assessed using a visual analog pain scale, and accepted if this was 〈10 mm on a 100 mm scale within 30 minutes. The extent of motor block and of nausea and vomiting were recorded at 30 minutes after administration of the epidural solution and two hours after surgery, respectively. Results The MLAC of lidocaine in those receiving lidocaine alone was 0.785% （95%C/0.738-0.864）. A significant dose-dependent reduction was observed with the addition of fentanyl： the MLAC of lidocaine with fentanyl at 2 pg/ml was 0.596% （95%C/0.537-0.660） and 0.387% with fentanyl at 3 pg/ml （95%C/0.329-0.446, P 〈0.001）. Conclusion Epidural fentanyl significantly reduces the dose of lidocaine required for effective epidural analgesia in adults without causing adverse side effects. （Chi CTR-TRC-11001559）

关键词： epidural anesthesia fentanyl lidocaine minimum local analgesic concentration

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半夏凝集素基因的克隆与氨基酸序列初步分析

中草药 2012年第9期43卷 1818-1823页

作者：张正英甘肃省农业科学院甘肃兰州730070

目的克隆半夏凝集素基因并对其氨基酸序列生物信息与已报道相关基因进行对比分析,为抗虫基因利用和转基因育种研究奠定基础。方法根据已报道的植物凝集素基因序列设计特异引物,以半夏叶片DNA为模板进行PCR扩增,获得特异性片段,将其连接... 详细信息

目的克隆半夏凝集素基因并对其氨基酸序列生物信息与已报道相关基因进行对比分析,为抗虫基因利用和转基因育种研究奠定基础。方法根据已报道的植物凝集素基因序列设计特异引物,以半夏叶片DNA为模板进行PCR扩增,获得特异性片段,将其连接到测序载体上,进行序列测定,用分析软件分析序列信息。结果克隆1 069 bp的半夏凝集素基因(pta),开放阅读框全长804 bp,编码268个氨基酸残基;预测相对分子质量和等电点分别为2.91×104和7.77,功能区完整,具有1条信号肽和3个甘露糖结合区;已在GenBank中登记(登录号AY725425)。结论克隆的半夏凝集素基因序列信息完整,具有典型的甘露糖结合位点,可以作为抗虫基因用于抗虫育种。

关键词：半夏半夏凝集素(PTA) 基因克隆序列分析特异性片段

对利用动态光散射法测量颗粒粒径和液体黏度的改进

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物理学报 2018年第16期67卷 301-309页

作者：张颖郑宇何茂刚西安交通大学热流科学与工程教育部重点实验室西安710049

光散射技术通过测量悬浮液中布朗运动颗粒的平移扩散系数,得到颗粒流体力学直径或液体黏度.本文由单参数模型入手,建立了低颗粒浓度下,单颗粒平移扩散系数与颗粒集体平移扩散系数和颗粒浓度之间的线性依存关系并将其引入光散射法中,从... 详细信息

光散射技术通过测量悬浮液中布朗运动颗粒的平移扩散系数,得到颗粒流体力学直径或液体黏度.本文由单参数模型入手,建立了低颗粒浓度下,单颗粒平移扩散系数与颗粒集体平移扩散系数和颗粒浓度之间的线性依存关系并将其引入光散射法中,从而对现有的测量方法进行了改进.改进后的测量方法可实现纳米尺度球型颗粒标称直径的测量和液体黏度的绝对法测量.以聚苯乙烯颗粒+水和二氧化硅颗粒+乙醇两个分散系为参考样本,通过实验,验证了改进后方法的可行性.此外,还针对上述两个分散系,实验探讨了温度和颗粒浓度对颗粒集体平移扩散系数的影响规律,发现聚苯乙烯颗粒+水分散系中,颗粒间相互作用表现为引力;二氧化硅颗粒+乙醇分散系中,颗粒间相互作用表现为斥力.讨论了颗粒集体平移扩散系数随颗粒浓度变化规律与第二渗透维里系数的关系.

关键词：动态光散射平移扩散系数粒径黏度

Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng zheng Borui zhang Sonata S Y Yau Kwok-Fai So Li zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNS Regeneration(Ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key Laboratory of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise

双强度、频度电针对血管性痴呆大鼠海马CA1区β淀粉样蛋白1-40、精氨酸加压素及学习记忆的影响

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针刺研究 2017年第1期42卷 20-24,49页

作者：蒋灵鸽张华伟张拯邵瑛广州中医药大学针灸康复临床医学院广州510405

目的:探讨双强度、频度参数交叉配对电针对血管性痴呆(VD)大鼠海马CA 1区β淀粉样蛋白1-40(Aβ1-40)、精氨酸加压素(AVP)及学习记忆的影响。方法:SD大鼠随机抽取8只为假手术组,余大鼠采用4-VO制造血管性痴呆动物模型,造模后筛选出合格... 详细信息

目的:探讨双强度、频度参数交叉配对电针对血管性痴呆(VD)大鼠海马CA 1区β淀粉样蛋白1-40(Aβ1-40)、精氨酸加压素(AVP)及学习记忆的影响。方法:SD大鼠随机抽取8只为假手术组,余大鼠采用4-VO制造血管性痴呆动物模型,造模后筛选出合格的大鼠分为模型组、电针1组(强度0.5mA,每5d治疗1次)、电针2组(强度1.5mA,每5d治疗1次)、电针3组(强度0.5mA,每天治疗1次)、电针4组(强度1.5mA,每天治疗1次),每组8只。电针组针刺"百会""大椎"穴,共治疗10次。运用荧光定量PCR法检测大鼠海马CA 1区Aβ1-40、AVP基因表达,Morris水迷宫测试各组大鼠学习记忆能力。结果:模型组与假手术组比较,平均逃避潜伏期与首次跨越平台时间均延长,2min内跨越平台次数减少,Aβ1-40基因相对表达量增加,AVP基因相对表达量减少(P<0.05)。各电针组与模型组比较,平均逃避潜伏期与首次跨越平台时间均缩短,2min内跨越平台次数增多,Aβ1-40基因相对表达量减少,AVP基因相对表达量增加(P<0.05)。各电针组间进行比较,同频度不同强度时,高强度组(电针2组、电针4组)较低强度组(电针1组、电针3组)大鼠的学习记忆能力强,海马CA 1区Aβ1-40基因相对表达量减少、AVP基因相对表达量增加(P<0.05);同强度不同频度时,高频度组(电针3组、电针4组)较低频度组(电针1组、电针2组)大鼠的学习记忆能力强,海马CA 1区Aβ1-40基因相对表达量减少、AVP基因相对表达量增加(P<0.05)。结论:电针可有效地改善VD大鼠学习记忆能力,其机制可能为电针抑制海马CA 1区Aβ1-40、促进AVP的基因表达;针效高强度优于低强度,高频度优于低频度,高强度与高频度配对治疗方案最优。

关键词：血管性痴呆电针电针强度/频度 β淀粉样蛋白1-40 精氨酸加压素学习记忆能力

基于信号能量方差的链路稳定性在MANET中的应用

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控制工程 2017年第3期24卷 680-686页

作者：张应征张群慧湖南工程职业技术学院信息工程系长沙410151 湖南信息学院电子信息学院长沙410151

传统QoS路由协议通常基于信号强度或节点间的距离来解决链路的稳定性,导致选择最近节点时,增加了跳数,从而降低了路由的QoS,影响网络的性能。基于此,本文提出了一种新的机制,在OLSR协议的基础上,通过某个节点相对于邻居节点的移动性程... 详细信息

传统QoS路由协议通常基于信号强度或节点间的距离来解决链路的稳定性,导致选择最近节点时,增加了跳数,从而降低了路由的QoS,影响网络的性能。基于此,本文提出了一种新的机制,在OLSR协议的基础上,通过某个节点相对于邻居节点的移动性程度来计算链路稳定性,采用一个稳定性函数作为主路径的选取准则,有效地选择了一条关于链路稳定性的最佳路径。仿真结果表明,与OLSR ETX和OLSR相比,本文所提方法使得MPR的重复计算和路由袁的重复计算过程最小化,并减少了数据包的丢失率,降低了数据包的传输时延,大大提高了网络的性能。

关键词：路由协议信号强度链路稳定性稳定性函数主路径