Results 31 to 40 of about 14,445 (117)
歧口17-2油田水质处理流程调整研究
Gongye shui chuli, 2013 歧口17-2油田实行清污混注后,注入水含油浓度超标,急需对水质处理流程进行调整。对注水流程各节点含油浓度的检测结果显示,水力旋流器除油效率低是导致注入水含油超标的关键节点。对水力旋流器运行参数进行了优化,结果表明,当PDR值为1.75,流量为95 m3/h时,水力旋流器除油率可提高到70%以上,注入水含油浓度满足控制指标要求。宋文礼, 刘义刚doaj Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT
Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...Shumin Ye, Zida Zhang, Rie Umetsu, Huaping Ding, Xiong Liang, Yuanfei Cai, Yan Zhang, Yuqiang Yan, Zhenduo Wu, Jiang Ma, Xing Tong, Haibo Ke, Hai‐Yang Bai, Wei‐Hua Wang +13 morewiley +1 more source抑郁症状与SPECT局部脑血流灌注的相关探讨
Zhongshan Daxue xuebao. Yixue kexue ban, 2007 [目的]采用单光子发射计算机断层扫描（SPECT）技术测定抑郁症患者的局部脑血流（rCBF）,与正常对照比较脑血流灌注变化,并观察抑郁症症状与患者脑血流灌注的关系。[方法]以18例未经抗抑郁治疗的抑郁症患者为研究对象,19名正常人作为对照组,分别行SPECT检查。[结果]未经治疗的抑郁患者SPECT脑血流低灌注发生率为72.2%;重症抑郁患者100%存在脑血流低灌注;抑郁组患者双侧额叶、颞叶的rCBF较对照组显著下降（P〈0.01～0.05）,左顶叶、右基底节rCBF也明显降低（P〈0.05 ...贾艳滨, 黄立安, 徐伊, 徐浩doaj Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7‐year national cohort study (2017–2023)
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 756-763, June 2026.ABSTRACT Objectives
Cytomegalovirus (CMV) is the leading cause of congenital infectious neurosensory impairment. We aimed to present national epidemiological data on maternal CMV infection during pregnancy in France, focusing in particular on primary infection in the periconceptional period or first trimester, and to assess the impact of changes in ...P. Coste‐Mazeau, E. Ribot, S. Hantz, Y. Ville, M. Leruez‐Ville, S. Alain, the French Congenital Infection database group, Maeva Anciaux, Laurent Andreoletti, Julie Arata‐Bardet, Carine Arlicot, Dominique Astruc, Jocelyne Attia, Marie‐Stéphanie Aubelle, Christelle Auvray, Bassel Bachour, Sonanda Bailleux, Nathalie Banaszkiewicz, Adeline Baron, Audrey Baudesson de Chanville, Manon Baudry, Agnès Beby‐Defaux, Alexandra Benachi, Melinda Benard, Yasmina Benmalek, Guillaume Benoist, Géraldine Benoit, Clotilde Bertrand, Florence Biquard, Delphine Body‐Bechou, Emilie Bouissou, Brahim Boumahni, Thomas Bourlet, Elise Bouthry, David Boutolleau, Marie Pierre Brechard, Caroline Bressollette, Olivier Brissaud, Marine Butin, Anne‐Sophie Cabaret‐Dufour, Romain Cahierc, Sandrine Caillot‐Vaudoyer, Odile Camard, Margaux Canaguier, Isabelle Cannavo, Clément Castella, Julie Cattin, Caroline Chessa, Marie‐Thérèse Cheve, Marianne Coicaud, Laurence Contin, Marianne Coste‐Burel, Sophie Couderc, Anne‐Marie Darras, Amélie Delabaere, Delphine Delayer, Mathilde Demeyere, Joelle Dendale, Anny Dewilde, Murielle Dobrzynski, Chloé Dole, Chloé Epiard, Véronique Equy, Laurence Fagour, Frederic Faibis, Benoit Fetiveau, Axel Fichez, Christelle Follet‐Bouhamed, Justine Formet, Vincent Foulongne, Loriane Franchinard, Emilie Frobert, Denis Gallot, Patricia Garcia, Isabelle Garrigue, Catherine Gaudy‐Graffin, Stéphanie Gouarin, Ann‐Claire Gourinat, Veronique Grezard, Michele Gueneret‐Bru, Jérôme Guinard, Frédérique Hay, Sophie Henault, Céline Homatter, Nadira Houhou, Cyril Huissoud, Véronique Jacomo, Gaelle Jambon, Eugénie Jolivet, Saodat Karimova, Blandine Keller, Sophie Ketterer‐Martinon, Fedia Khlif Masmoudi, François Kieffer, Bérengère Kireche, Anne‐Sophie L'Honneur, Jean‐Marc Labaune, Imad Labbassi, Marie‐Edith Lafon, Gisèle Lagathu, Stéphane Lastere, Hélène Laurichesse, Mouna Lazrek, Gwenaelle Le Bouar, Camille Le Pors, Claudine Le Vaillant, René Lebeaupin, Elodie Lecorps, Quentin Lepiller, Justine Lerat, Marine Letrecher, Nicolas Leveque, Emmanuelle Levine, Sophie Levrier, David Leyssene, Julien Lupo, Nadia Mahjoub, Anne‐Marie Maillotte, Sandrine Marioli, Julien Marlet, Stéphanie Marque Juillet, Manon Marquet, Charlotte Masias, Marco Millones Gonzales, Philippe Minodier, Nicolas Mottet, Eve Mousty, Sébastien Moutton, Anca Moza, Fatiha Najioullah, Anne‐Laure Nerre, Marie‐France Olieric, Isabelle Parent, Anne Paris, Christophe Pasquier, Estelle Perdriolle‐Galet, Franck Perrotin, Delphine Pesenti, Jean‐Charles Picaud, Olivier Picone, Sylvie Pillet, Léa Pilorge, Didier Pinquier, Veronique Poirier‐Cartron, Lucie Poisson, Perrine Prier, Catherine Queiros‐Da‐Silva, Thibaud Quibel, Harisoa Ramaholimihaso, Fabienne Raskin, Christel Regagnon, Mathilde Roffi, Thierry Rousseau, Anne‐Hélène Saliou, Adèle Schiby, Nathalie Schnepf, Christine Segard, Anaïs Soares, Morgane Solis, Robin Stephan, Natacha Teissier, Cyrielle Thonnon, Cynthia Trastour, Joelle Troussier, Anne Sylvie Valat, Christelle Vauloup‐Fellous, Véronique Venard, Valérie Vequeau‐Goua, Laura Verdurme, Mathilde Vermont, Marie Gabrielle Vigue, Marie Vincienne, Vladimir Vladimirov, Jean‐Baptiste Vuillemenot, Anne Sophie Weingertner, Eric Welter, Christine Zandotti +176 morewiley +1 more source±800 kV直流输电线路正极性侧带电作业电位转移放电特性研究
Dianci bileiqi, 2020 为明确±800 kV直流输电线路带电作业电位转移放电特性,考虑强电场作用下粒子产生、运动和消散过程,构建了基于流体力学理论的电位转移流注放电模型,计算并分析了放电过程中的电场强度、流注发展速度和电流密度随时间的变化规律,以及不同转移距离下的放电电流。结果表明:在电位转移放电过程中,随着放电时间的增加,流注头部电场强度减小、流注发展速度加快、电流密度增大;电位转移棒与导线间的放电电流随着电位转移距离的减小而增大;确定了±800 kV输电线路在正极性导线侧带电作业时最佳电位转移距离为0. 45 m左右。周晨梦, 罗日成, 李稳, 李智琦, 史志强, 隆晨海, 郑云龙, 杨鑫 +7 moredoaj 采用钢柱接地的钢结构变电站防雷接地特性研究
Dianci bileiqi, 2022 笔者针对钢结构变电站直击雷防护，对雷击过程中变电站接地特性进行研究，相较于通过避雷带引下线接地的现行方案，在采用钢柱直接接地情况下，地表电位升最大值下降幅度达到26.5%。钢结构变电站的导体网络对于具有大量高频分量的雷电流具有明显的电感效应，地表电位升峰值时刻超前于雷电流约5μs。雷电流散流集中于注流点附近的4～5条引下线或者连接线，总散流占比超过90%,相比现行方案，通过钢柱接地的方案散流更加集中于注流点附近的4条连接线，距离注流点最近的连接线分流占比达到了55.19 ...李凡, 詹锐烽, 吴凯, 李浩言, 黄焕, 蔡力 +5 moredoaj 特高压混合式MMC低全桥配比下单阀组投退过程中的均压控制 [PDF]
全球能源互联网, 2018 低全桥子模块配比的混合式模块化多电平换流器（modular multi-level converter，MMC）应用于高低阀组拓扑结构的特高压柔性直流系统时，在单阀组在线投入/退出过程中存在半桥子模块持续充/放电引起的子模块电压不均衡问题，严重影响系统安全。通过详细的理论分析，指出阀组投入/退出过程中桥臂电流不存在过零点是导致半桥子模块持续充放电问题的本质原因。为此提出了基于环流注入的单阀组投/退过程中的均压控制，在阀组投退期间控制MMC产生一定的相间环流，人为创造正负交替的桥臂电流，为半桥子模块充 ...杨美娟, 王先为, 姚为正, 吴金龙, 易映萍, 朱龙臻 +5 moredoaj +1 more sourceRoot exudates mediate microorganisms to improve rhizosphere nutrient availability and crop productivity under straw mulching and slow‐release nitrogen fertilizer
Functional Ecology, Volume 40, Issue 6, Page 1725-1739, June 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root exudates play a key role as signals and nutrients in mediating plant–microbe communication. However, critical knowledge gaps remain regarding how root exudates mediate soil–microbe–plant interactions to regulate crop yield under long‐term straw mulching combined ...Jiajie Song, Shahzad Haider, Jianheng Song, Dingding Zhang, Gaihe Yang, Guangxin Ren, Xing Wang, Yongzhong Feng +7 morewiley +1 more sourceRapid construction of insect–plant interaction networks via multiplexed long‐fragment DNA metabarcoding and NGS
Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1896-1909, June 2026.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,Xiao‐man Zhang, Yu‐xuan Zheng, Shao‐jun Zhang, Cai‐qing Yang, Xin‐chun Li, Qian Jin, Jing Li, Liu‐sheng Chen, Ai‐bing Zhang, Jing‐ze Liu +9 morewiley +1 more source湿度影响下短空气间隙负流注放电过程的试验与仿真研究
Dianci bileiqi湿度影响空气间隙负极性流注放电微观过程，建立棒-板空气间隙负流注放电流体模型以及试验平台。记录放电图像，对比其发展通道宽度及发光强度；测量湿度为40%、50%、60%、70%、80%条件下负极性流注放电电流及，从宏观角度对不同湿度情况下的参量进行对比分析。在数值计算中模拟湿度为0%、30%、60%、90%条件下空气间隙负极性流注放电起始、发展及击穿过程，从微观角度分析水分子对负极性流注放电特性参数的影响规律。研究发现：在棒-板电极结构下，湿度增大促进负极性流注发展。湿度每增大30 ...王清尘, 安韵竹, 苏梦函, 冯守信, 田海鹏, 屈路 +5 moredoaj +2 more sources
