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长输管道泄漏检测技术应用策略探讨

全面腐蚀控制 2024年第10期38卷 125-128页

作者：李勇吕卫斌王进军张强钰林海峰国家石油天然气管网集团有限公司山东公司德州作业区山东德州253000 中国石油天然气股份有限公司塔里木油田分公司新疆库尔勒841000 中国石油长庆油田分公司第九采油厂宁夏银川750001 国家石油天然气管网集团有限公司甘肃分公司甘肃兰州730060 国家石油天然气管网集团有限公司西北公司银川输油气分公司宁夏银川750000

新版《安全生产法》《环境保护法》发布实施,管道行业对于泄漏检测技术精度要求更高。针对信号检测法、基于模型的检测法和模式识别检测法,阐述通过改进信号处理技术、应用模式识别方法、应用粒子群算法以及优化SVM算法解决管道微小泄... 详细信息

新版《安全生产法》《环境保护法》发布实施,管道行业对于泄漏检测技术精度要求更高。针对信号检测法、基于模型的检测法和模式识别检测法,阐述通过改进信号处理技术、应用模式识别方法、应用粒子群算法以及优化SVM算法解决管道微小泄漏检测难题的研究进展。结合管道智能化发展趋势,提出加强多种检测机理融合的泄漏检测技术的理念,对于提高管道泄漏检测精度具有指导意义。

关键词：管道泄漏检测技术信号模型模式识别

Mitochondrial Reactive Oxygen Species Elicit Acute and Chronic Itch via Transient Receptor Potential Canonical 3 Activation in Mice

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Neuroscience Bulletin 2022年第4期38卷 373-385页

作者： Seong-Ah Kim jun Ho Jang Wheedong Kim Pa Reum Lee yong Ho Kim Hue Vang Kihwan Lee Seog Bae Oh Department of Neurobiology and Physiology School of Dentistry and Dental Research InstituteSeoul National UniversitySeoul 03080Republic of Korea Department of Brain and Cognitive Sciences College of Natural SciencesSeoul National UniversitySeoul 08826Republic of Korea Gachon Pain Center and Department of Physiology College of MedicineGachon UniversityIncheon 21999Republic of Korea Tooth-Periodontium Complex Medical Research Center School of DentistrySeoul National UniversitySeoul 03080Republic of Korea

Mitochondrial reactive oxygen species(mROS)that are overproduced by mitochondrial dysfunction are linked to pathological conditions including sensory ***,we explored whether mROS overproduction induces itch through transient receptor potential canonical 3(TRPC3),which is sensitive to *** injection of antimycin A(AA),a selective inhibitor of mitochondrial electron transport chain complex III for mROS overproduction,produced robust scratching behavior in naïve mice,which was suppressed by MitoTEMPO,a mitochondria-selective ROS scavenger,and Pyr10,a TRPC3-specific blocker,but not by blockers of TRPA1 or *** activated subsets of trigeminal ganglion neurons and also induced inward currents,which were blocked by MitoTEMPO and ***,dry skin-induced chronic scratching was relieved by MitoTEMPO and Pyr10,and also by resveratrol,an *** together,our results suggest that mROS elicit itch through TRPC3,which may underlie chronic itch,representing a potential therapeutic target for chronic itch.

关键词： Mitochondria Reactive oxygen species TRPC3 Itch Dry skin Trigeminal ganglia

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锰电积用新型阳极研究进展

中国锰业 2024年第2期42卷 12-15页

作者：叶昌美李武斌黄健李勇张谊胡志同吴占新贵州省新材料研究开发基地贵州贵阳550014

通过对铅基二元合金阳极、铅基多元合金阳极、钛基阳极、铝基阳极和不锈钢基阳极的分析,总结了各类阳极的特性。这些研究结果为锰电积用新型阳极的研发提供了重要参考,有助于推动电解金属锰行业的成本优化和效率提升。

关键词：锰电积阳极电解金属锰成本优化

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极端天气气候与空气质量对健康影响

四川生理科学杂志 2024年第3期46卷 700-702页

作者：吴杨彭俊文何雨璐卢秋云李永红成都信息工程大学电子工程学院四川成都610225

随着经济和社会不断发展,极端天气气候与空气质量作为影响人口和经济活动中心的重要因素,对居民生产生活产生巨大影响。本文以极端天气气候与空气质量对健康的影响为研究对象,首先在文献阅读与案例研究的基础上,对极端天气气候和空气质... 详细信息

随着经济和社会不断发展,极端天气气候与空气质量作为影响人口和经济活动中心的重要因素,对居民生产生活产生巨大影响。本文以极端天气气候与空气质量对健康的影响为研究对象,首先在文献阅读与案例研究的基础上,对极端天气气候和空气质量的影响进行系统梳理,引入极端天气事件和空气污染成为各类疾病高发与灾害致死的重要原因,旨在通过介绍极端天气气候事件与空气污染对健康的影响,探究事件对公众影响水平并针对性地提出风险预测策略,以促进国家公共卫生安全和社会经济可持续发展。

关键词：极端天气健康空气污染风险预测

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4种药剂对百合根腐病的田间防治效果

湖南农业科学 2024年第4期 77-80页

作者：满益龙桑松周勇刘佳刘军朱航周小毛湖南省农业生物技术研究所湖南长沙410125 宁波三江益农化学有限公司浙江宁波315200

以百合根腐病为防控靶标,开展百合根腐病高效低毒药剂筛选,通过田间小区试验测定了4种药剂对百合根腐病的田间防效,调查结果表明:240 g/L丙硫菌唑·嘧菌酯·咯菌腈FS对百合根腐病的田间防效最好,达到80.1%,链霉菌BHT-5-2菌剂对百合根腐... 详细信息

以百合根腐病为防控靶标,开展百合根腐病高效低毒药剂筛选,通过田间小区试验测定了4种药剂对百合根腐病的田间防效,调查结果表明:240 g/L丙硫菌唑·嘧菌酯·咯菌腈FS对百合根腐病的田间防效最好,达到80.1%,链霉菌BHT-5-2菌剂对百合根腐病具有较好的田间防效,达到66.4%,而30%咪鲜胺·咯菌腈SE和30%氟吡菌胺·精甲霜灵SE对百合根腐病的田间防效仅分别为23.0%、14.2%,防效很差,没有生产应用意义。

关键词：百合根腐病防控靶标药剂选择

维普期刊数据库博看期刊

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一种液冷服务器和机柜的标准化方案

电信工程技术与标准化 2024年第5期37卷 68-72页

作者：徐永田孙善青牛红韦华王汝军中移(苏州)软件技术有限公司苏州215009

随着数据中心总能耗迅速攀升,国家相关部委出台了数据中心能耗要求。为响应国家“双碳”政策,各个电信运营商和互联网头部公司纷纷研究数据中心液冷技术,从而将新建数据中心机房的PUE降低到国家和地方政策要求的范围内。本文从技术论证... 详细信息

随着数据中心总能耗迅速攀升,国家相关部委出台了数据中心能耗要求。为响应国家“双碳”政策,各个电信运营商和互联网头部公司纷纷研究数据中心液冷技术,从而将新建数据中心机房的PUE降低到国家和地方政策要求的范围内。本文从技术论证的角度,阐述一种从液冷服务器到液冷机柜,以及液冷数据中心的标准化解耦设计方案,既能满足数据中心能源利用效率,又能达到低成本、高兼容性的长期发展规划的目的。

关键词：液冷机柜服务器数据中心

基于脯氨酸相关指标动态监测玉米苗期盐碱胁迫伤害

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玉米科学 2024年第7期32卷 55-64页

作者：刘俊宇张春宵孙博董菁金峰学刘学岩刘文平石创业吴委林李晓辉吉林省农业科学院玉米研究所吉林公主岭136100 延边大学农学院吉林延吉133002

以3份玉米单交种(郑单958、先玉335、吉单27)及其双亲(郑58/昌7-2、PH6WC/PH4CV、四-287/四-144)为试验材料,分别用200 mmol/L NaCl和100 mmol/L Na2CO3对其进行苗期盐、碱胁迫处理,并在10个时间点监测苗情和测定脯氨酸(Pro)含量、Δ1-... 详细信息

以3份玉米单交种(郑单958、先玉335、吉单27)及其双亲(郑58/昌7-2、PH6WC/PH4CV、四-287/四-144)为试验材料,分别用200 mmol/L NaCl和100 mmol/L Na2CO3对其进行苗期盐、碱胁迫处理,并在10个时间点监测苗情和测定脯氨酸(Pro)含量、Δ1-吡咯啉-5-羧酸合成酶(P5CS)和脯氨酸脱氧酶(PDH)活性。通过方差分析和相关性分析,探究盐碱胁迫对玉米生长的影响,并筛选耐盐性评价指标和时间点,对材料进行耐盐性综合分级。结果表明,碱胁迫对植株伤害更严重。由于脯氨酸相关指标变化表现明显的阶段分化,将9个胁迫点划分为3个阶段,并将胁迫后1、3和5 d确立为玉米苗期耐盐碱鉴定适宜的胁迫时间点,P5CS活性被确立为评价指标。郑单958为高耐盐品种,吉单27为高耐碱品种,四-287、四-144和郑58为高耐盐/碱自交系。

关键词：玉米盐碱胁迫脯氨酸含量 P5CS活性 PDH活性

Individualized minimally invasive treatment for adult testicular hydrocele: A pilot study

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World Journal of Clinical Cases 2019年第6期7卷 727-733页

作者： Le Lin Huai-Shan Hong Yun-Liang Gao Jin-Rui Yang Tao Li Qing-Guo Zhu Lie-Fu ye yong-Bao Wei Shengli Clinical Medical College of Fujian Medical University Department of Urology Fujian Provincial Hospital Department of Urology the Second Xiangya HospitalCentral South University

BACKGROUND Hydrocelectomy is the gold standard for the treatment of hydrocele,but it often causes complications after surgery,including hematoma,infection,persistent swelling,hydrocele recurrence,and chronic pain. In recent years,several methods for minimally invasive treatment of hydrocele have been introduced,but they all have limitations. Herein,we introduce a new method of individualized minimally invasive treatment for *** To present a new method for the treatment of adult testicular *** Fifty-two adult patients with idiopathic testicular hydrocele were included. The key point of this procedure was that the scope of the resection of the sheath of the tunica vaginalis was determined according to the maximum diameter(d) of the effusion measured by ultrasound and the maximum diameter of the portion of the sheath pulled out of the scrotum was approximately πd/2. The surgical procedure consisted of a 2-cm incision in the anterior wall of the scrotum,drainage of the effusion,and dissection of part of the sheath of the tunica vaginalis. After the sheath was peeled away to the predetermined target extent,the pulled-out sheath was removed. The intraoperative findings and postoperative complications were *** All patients were successfully treated with a median operation time of 18 *** median maximum diameter of the effusion on ultrasound was 3.5 cm,and the median maximum diameter of the resected sheath was 5.5 cm. Complications occurred in four(7.7%) patients: two(3.8%) cases of mild scrotal edema,one(1.9%) case of scrotal hematoma,and one(1.9%) case of wound infection. All of the complications were grade I-II. Recurrent hydrocele,chronic scrotal pain,and testicular atrophy were not observed during a median follow-up of 12 *** We report a new technique for individualized treatment of testicular hydrocele,which is quantitative and minimally invasive and yields good outcomes. Further study is warranted to verify its potent

关键词： Testicular hydrocele Individual treatment Minimal invasion Complications Scrotoscope

Fused monochromatic imaging acquired by single source dual energy CT in hepatocellular carcinoma during arterial phase: an initial experience

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Chinese Journal of Cancer Research 2014年第4期26卷 437-443页

作者： Shun-Yu Gao Xiao-Peng Zhang yong Cui Ying-Shi Sun Lei Tang Xiao-Ting Li Xiao-Yan Zhang jun Shan Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) Department of RadiologyPeking University Cancer Hospital& Institute

Objective： To explore whether single and fused monochromatic images can improve liver tumor detection and delineation by single source dual energy CT （ssDECT） in patients with hepatocellular carcinoma （HCC） during arterial phase. Methods： Fifty-seven patients with HCC who underwent ssDECT scanning at Beijing Cancer Hospital were enrolled retrospectively. Twenty-one sets of monochromatic images from 40 to 140 keV were reconstructed at 5 keV intervals in arterial phase. The optimal contrast-noise ratio （CNR） monochromatic images of the liver tumor and the lowest-noise monochromatic images were selected for image fusion. We evaluated the image quality of the optimal-CNR monochromatic images, the lowest-noise monochromatic images and the fused monochromatic images, respectively. The evaluation indicators included the spatial resolution of the anatomical structure, the noise level, the contrast and CNR of the tumor. Results： In arterial phase, the anatomical structure of the liver can be displayed most clearly in the 65-keV monochromatic images, with the lowest image noise. The optimal-CNR monochromatic images of HCC tumor were 50-keV monochromatic images in which the internal structural features of the liver tumors were displayed most clearly and meticulously. For tumor detection, the fused monochromatic images and the 50-keV monochromatic images had similar performances, and were more sensitive than 65-keV monochromatic images. Conclusions： We achieved good arterial phase images by fusing the optimal-CNR monochromatic images of the HCC tumor and the lowest-noise monochromatic images. The fused images displayed liver tumors and anatomical structures more clearly, which is potentially helpful for identifying more and smaller HCC tumors.

关键词： Computed tomography (CT) dual energy hepatocellular carcinoma (HCC) image postprocessing comparative study