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First-order approximate analytical expressions of oblique incident elastic wave at an interface of porous media saturated with a nonviscous fluid

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Petroleum Science 2022年第6期19卷 2720-2740页

作者： Dong-Yong Zhou Xing-Yao Yin Xiao-Tao Wen Xi-Lei he zhen-hua he State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengduSichuan610059China Key Laboratory of Earth Exploration and Information Technology of Ministry of Education Chengdu University of TechnologyChengduSichuan610059China College of Geosciences and Technology China University of Petroleum(East China)QingdaoShandong266580China

The analysis technology of Amplitude Variation with Offset(AVO)is one of the important methods for oil and gas reservoir *** equation and its approximations are the theoretical basis of AVO analysis,which assumes that the upper and lower media of a horizontal interface are single-phase *** by this assumption,AVO analysis has limited prediction and identification accuracy for complex porous *** view of this,the first-order approximate analytical expressions of oblique elastic wave at an interface of porous media are ***,the incident and scattering characteristics of various waves at the interface of porous media are analyzed,and the displacement vectors generated by these elastic waves are described by exponential ***,the kinematic and dynamic boundary conditions at the interface of porous media are ***,by substituting the displacement vectors of incident and scattered waves into boundary conditions,the exact analytical equation is ***,considering the symmetry of scattering matrix in the equation,the exact analytical expressions of each scattered wave are ***,under the assumptions of small incident angle,weak elasticity at an interface of porous media,and ignoring the second-and higherorder terms,the first-order approximate analytical expressions are *** a model of sandstone porous media with different porosity in upper and lower media,the correctness of the approximate analytical expressions is verified,and the elastic wave response characteristics of lithology and pore fluids are analyzed.

关键词： First-order approximate expressions Oblique incident wave Elastic plane wave Porous media Scattering coefficient

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li zhen Ma Jin-hua Gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

Pathogenesis, diagnosis, and treatment of epilepsy: electromagnetic stimulation-mediated neuromodulation therapy and new technologies

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Neural Regeneration Research 2025年第4期20卷 917-935页

作者： Dian Jiao Lai Xu zhen Gu hua Yan Dingding Shen Xiaosong Gu Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjinChina Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang UniversityHangzhouZhejiang ProvinceChina Affiliated Hospital of Nantong University NantongJiangsu ProvinceChina

Epilepsy is a severe,relapsing,and multifactorial neurological *** regarding the accurate diagnosis,prognosis,and in-depth pathogenesis are crucial for the precise and effective treatment of *** pathogenesis of epilepsy is complex and involves alterations in variables such as gene expression,protein expression,ion channel activity,energy metabolites,and gut microbiota *** results are lacking for conventional treatments for *** resection of lesions,drug therapy,and non-drug interventions are mainly used in clinical practice to treat pain associated with ***-pharmacological treatments,such as a ketogenic diet,gene therapy for nerve regeneration,and neural regulation,are currently areas of research *** review provides a comprehensive overview of the pathogenesis,diagnostic methods,and treatments of *** also elaborates on the theoretical basis,treatment modes,and effects of invasive nerve stimulation in neurotherapy,including percutaneous vagus nerve stimulation,deep brain electrical stimulation,repetitive nerve electrical stimulation,in addition to non-invasive transcranial magnetic stimulation and transcranial direct current *** studies have shown that electromagnetic stimulation-mediated neuromodulation therapy can markedly improve neurological function and reduce the frequency of epileptic ***,many new technologies for the diagnosis and treatment of epilepsy are being ***,current research is mainly focused on analyzing patients’clinical manifestations and exploring relevant diagnostic and treatment methods to study the pathogenesis at a molecular level,which has led to a lack of consensus regarding the mechanisms related to the disease.

关键词： diagnosis drug treatment electroencephalography epilepsy monitoring epilepsy nerve regeneration neurostimulation non-drug interventions pathogenesis prediction

Endoscopic decompression of the optic canal for traumatic optic neuropathy

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Chinese Journal of Traumatology 2016年第6期19卷 330-332页

作者： zhen-hua he zheng-Bo Lan Ao Xiong Guo-Kuo Hou Ya-Wen Pan Qiang Li Xin-Ding Zhang Institute of Neurology Department of Neurasurgery Lanzhou University Second Hospital Lanzhou 730030 China Basic Medical College of zhengzhou University Zhengzhou 450001 China

Purpose： Traumatic optic neuropathy （TON） is a serious complication of head trauma with the incidence rate of 0.5%-5%. The aim of this study was to investigate the therapeutic efficacy of endoscopic decompression of the optic canal for optic nerve injuries. Methods： In this study, 11 patients treated in our hospital from January 2009 to January 2015 with the visual loss resulting from TON were retrospectively reviewed for preoperative vision, visual evoked potential （VEP） scan, surgical approach, postoperative visual acuity, complications, and follow-up results. Results： All these patients received endoscopic decompression of the optic canal. At the 3-month follow- up, the visual acuity improvement rate of the 11 patients was 45.5%. The vision acuity of 2 cases improved from hand movement to 0.08 and 0.3 after operation. Another patient＇s vision acuity returned to 0.05 compared to light sensation preoperatively. Two cases had finger counting before surgery but they had a vision acuity of 0.4 and light sensation respectively after surgery. However, the other 6 cases＇ vision did not improve after surgery. Conclusion： Endoscopic decompression of the optic canal is an effective way to cure TON. VEP could be used as an important reference for preoperative and prognosis evaluation. Operative time after trauma is only a relative condition that may affect the therapeutic effect of optic canal decompression. Poor results of this procedure may be related to the severity of the optic nerve injury.

关键词： Optic nerve injuries Visual acuity Evoked potentials visual

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衰减球面冲击波波阵面自模拟运动特性

物理学报 2004年第3期53卷 840-843页

作者：卞保民杨玲李振华陈笑贺安之沈中华南京理工大学应用物理系南京210094

指出衰减球面冲击波波阵面传播过程属于自模拟运动 ,提出衰减球面冲击波波阵面传播自模拟函数的概念 ,在此基础上推导出均匀介质中衰减球面冲击波波阵面自模拟传播公式 .

关键词：衰减球面冲击波自模拟运动均匀介质量纲分析流体力学

五大连池的5~#池渔业资源环境现状及合理利用

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水产学杂志 2016年第1期29卷 29-33页

作者：王念民孙大江李喆华振河华振东纪锋中国水产科学研究院黑龙江水产研究所黑龙江哈尔滨150076 黑龙江省五大连池市日河渔业有限公司黑龙江黑河164155 中国水产科学研究院长江水产研究所湖北武汉430223

2012年春、夏、秋季调查五大连池的5~#池水质和生产力,并于2012年6月5日和7日放入体质量(1.00±0.25)kg的鲢Hypophthalmichthys molitrix、鳙Aristichthys nobilis和体质量(6.00±2.5)g的匙吻鲟Polyodon spathula,研究其生长。结果表明:该池水质受环境影响而剧烈变化,透明度、氨氮和磷含量达到或超过国家地表水Ⅳ类水质标准,溶解氧量达到Ⅰ类水质标准。5~#池中发现浮游植物8门79种属,平均生物量为6.287mg/L;浮游动物生物量5.49mg/L;春、夏、秋叶绿素a含量分别为15.29μg/L、63.48μg/L、13.42μg/L,年平均30.73μg/L。利用浮游生物量评估5~#池鲢、鳙年产量分别为37.74t和46.73t,鲢、鳙生产量为47.175kg/hm^2和58.35kg/hm^2;而用叶绿素a含量估算鲢的年产量为61.49t,生产量75.186kg/hm^2;黑白瓶法估算鲢、鳙年产量分别为44.6t和43.01t,鲢、鳙生产量55.65kg/hm^2、52.8kg/hm^2。8月15日,鲢、鳙及匙吻鲟体质量分别为1.5kg、2.1kg和0.2kg,增重率分别为7.14g/d、15.71g/d和2.77g/d,生长速度较快。根据水质和生物量初步判断:5~#池接近富营养化。5~#池利用得当不仅可以提高湖泊的经济效益,还能防治湖泊的富营养化。

关键词：五大连池水质生产力富营养化

哮喘患者血清胱抑素C水平与白细胞介素8的相关性分析

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中国现代医学杂志 2017年第2期27卷 47-51页

作者：陈哲张艳霞罗卿贾远航何振华张秀峰南华大学附属第二医院胸心中心呼吸与危重症医学科湖南衡阳421001 南华大学附属第二医院湖南衡阳421001

目的探讨胱抑素C(Cys-C)与白细胞介素8(IL-8)的相关性,并分析其在支气管哮喘中的应用价值。方法 157例支气管哮喘患者在南华大学附属第二医院接受治疗,病情稳定后出院,根据患者入院时病情将其分为哮喘缓解期(A组)43例、轻度急性发作期(B... 详细信息

目的探讨胱抑素C(Cys-C)与白细胞介素8(IL-8)的相关性,并分析其在支气管哮喘中的应用价值。方法 157例支气管哮喘患者在南华大学附属第二医院接受治疗,病情稳定后出院,根据患者入院时病情将其分为哮喘缓解期(A组)43例、轻度急性发作期(B组)42例、中度急性发作期(C组)39例和重度急性发作期(D组)33例以及110例健康者为对照组。测定上述各组患者血清Cys-C及IL-8含量,同时对各组痰细胞进行分类并计数,并检测各组肺功能。结果对照组、A组、B组、C组、D组Cys-C水平分别为(275.69±32.90)、(385.83±49.84)、(537.83±53.29)、(794.26±66.83)及(993.78±89.24)pg/ml;B、C、D组患者血浆Cys-C水平高于A组及对照组(P0.05)。皮尔森相关分析表明,急性发作期患者Cys-C水平与FEV1(r=-0.585,P=0.008)、PEF%预计值(r=-0.493,P=0.019)、FEV1/FVC(r=-0.583,P=0.007)呈负相关,与IL-8(r=0.637,P=0.003)、诱导痰细胞总数(r=0.425,P=0.011)、嗜酸粒细胞百分比(r=0.485,P=0.019)呈正相关。结论随着支气管哮喘患者病情的发展,其血清浆中Cys-C和血清IL-8水平均升高,且Cys-C与IL-8具有相关性,可作为哮喘控制水平的评价指标。

关键词：哮喘胱抑素C 白细胞介素8

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神经内镜治疗第三脑室囊虫病的临床分析

中国内镜杂志 2016年第7期22卷 94-97页

作者：安彩霞李强粱文涛潘亚文张新定贺振华兰州大学第一医院儿科甘肃兰州730030 兰州大学第二医院神经外科甘肃兰州730030

目的探讨应用神经内镜治疗第三脑室囊虫病的手术方法及相关问题。方法回顾性分析2009年7月-2014年12月7例第三脑室囊虫病患者的临床资料，年龄12～49岁，所有患者均行神经内镜下第三脑室囊虫切除手术，术后给予阿苯达唑口服抗囊虫药物... 详细信息

目的探讨应用神经内镜治疗第三脑室囊虫病的手术方法及相关问题。方法回顾性分析2009年7月-2014年12月7例第三脑室囊虫病患者的临床资料，年龄12～49岁，所有患者均行神经内镜下第三脑室囊虫切除手术，术后给予阿苯达唑口服抗囊虫药物治疗。结果患者术后高颅压症状不同程度缓解，1例患者术后出现发热症状，其余患者无明显手术并发症，复查头颅CT或磁共振成像（MRI），全部患者脑室大小形态不同程度改善，脑积水症状缓解，全部病例疗效满意。结论使用神经内镜治疗第三脑室囊虫病操作简单、脑组织损伤小、术后并发症少，应作为首选治疗方法。

关键词：神经内镜第三脑室脑囊虫病

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芫花酯甲药膜抗早早孕临床研究

新药与临床 1989年第5期8卷 297-301页

作者：张建国李培全傅亚敏李运兴杜梅林苗振华河南省计划生育科学研究所郑州450003 开封妇产科医院河南省人民医院

芫花酯甲药膜通过Ⅰ,Ⅱ期临床应用,选择出了抗早早孕的最佳剂量和观察方法。Ⅲ期临床在门诊用药,剂量为50μg/人次,共应用1306例。完全流产率为84.23％;出血量小于或等于月经量的占48.29％;但出血量大于月经量的病例中300ml以上者仅占0... 详细信息

芫花酯甲药膜通过Ⅰ,Ⅱ期临床应用,选择出了抗早早孕的最佳剂量和观察方法。Ⅲ期临床在门诊用药,剂量为50μg/人次,共应用1306例。完全流产率为84.23％;出血量小于或等于月经量的占48.29％;但出血量大于月经量的病例中300ml以上者仅占0.64％,胚囊排出时间平均为33±SD24h,药物副反应主要为恶心、呕吐,占44.64％,其次为发热和寒战;置药前、后激素水平测定显示,E_2上升,P下降,PGF_2αM无明显改变;随访504例,40d内转经者占90.87％,经量大部分无变化。

关键词：人工流产芫花酯甲局部投药