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子午工程二期GNSS电离层TEC与闪烁监测仪样机测试及数据对比分析

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地球与行星物理论评（中英文） 2024年第1期55卷 77-93页

作者：王铮曹光伟胡连欢谭广远尚社平胡鹏陈志青中国科学院国家空间科学中心北京100190 太阳活动与空间天气重点实验室北京100190 天基空间环境探测北京市重点实验室北京100190 中国科学院地质与地球物理研究所北京100029

子午工程二期电离层TEC与闪烁接收机布网采用国产设备.经过连续3天的运行测试,本文以同台站同天线的国外对比设备PolaRx5数据为参考,对样机的数据进行质量评估.对于科学研究,数据的连续性和有效性,VTEC、幅度闪烁指数、相位闪烁指数这... 详细信息

子午工程二期电离层TEC与闪烁接收机布网采用国产设备.经过连续3天的运行测试,本文以同台站同天线的国外对比设备PolaRx5数据为参考,对样机的数据进行质量评估.对于科学研究,数据的连续性和有效性,VTEC、幅度闪烁指数、相位闪烁指数这三项数据的精度是最重要的指标.本文根据科研场景设计了这些方面的数据比较标准,评估样机的数据质量,并对两种设备探测结果特征的原因进行了分析,为数据准确性的评估提供参考和借鉴.

关键词：子午工程 GNSS电离层TEC与闪烁监测仪样机测试数据质量

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有机微量元素对奶牛的应用研究

中国乳业 2024年第9期 40-45页

作者：陈星星聂新华韩鹏田雨佳姚琨汪湛曹梦哲天津农学院动物科学与动物医学学院/天津市农业动物繁育与健康养殖重点实验室天津300392 潍坊市滨海生态环境监控中心山东潍坊261206 中国农业大学动物科技学院北京100193 天津天食牛种业有限公司天津301900

微量元素是构成机体组织的重要成分,并参与体内的物质代谢,对提高饲料营养物质的利用率、防止营养缺乏病有重要意义。并且微量元素作为酶的组成成分,以辅酶或激活剂形式参与机体的生化免疫过程,与动物的生长发育、抗氧化免疫、机体代谢... 详细信息

微量元素是构成机体组织的重要成分,并参与体内的物质代谢,对提高饲料营养物质的利用率、防止营养缺乏病有重要意义。并且微量元素作为酶的组成成分,以辅酶或激活剂形式参与机体的生化免疫过程,与动物的生长发育、抗氧化免疫、机体代谢等功能密切相关。微量元素缺乏会导致动物生理结构紊乱。而动物机体自身不能合成微量元素,因而需要在日粮中添加适量的微量元素以满足其生产所需。因此本文综合阐述了有机微量元素(锰、铁、铜、锌、钴、硒)的特点及作用机制,并全面分析了上述有机微量元素或复合物对奶牛生产性能、免疫指标和抗氧化指标、血清微量元素的影响及作用机制,为后续相关研究和奶牛生产提供参考。

关键词：有机微量元素奶牛应用研究

四川盆地中部地区震旦系大型碳酸盐岩气藏开发技术新进展

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天然气工业 2024年第5期44卷 68-79页

作者：闫海军杨长城郭建林刘曦翔曹正林杨东凡王忠楠邓惠张钰祥杨山季丽丹王丽珍夏钦禹郑国强中国石油勘探开发研究院中国石油西南油气田公司四川石油管理局有限公司

四川盆地中部地区(以下简称川中地区)震旦系灯影组气藏为大型古老深层岩溶风化壳型碳酸盐岩气藏,气藏整体表现为低孔隙度低渗透率,储集空间小尺度缝洞发育,储层非均质性强特征,气藏开发面临储层表征难、井位部署和效益开发难度大等系列... 详细信息

四川盆地中部地区(以下简称川中地区)震旦系灯影组气藏为大型古老深层岩溶风化壳型碳酸盐岩气藏,气藏整体表现为低孔隙度低渗透率,储集空间小尺度缝洞发育,储层非均质性强特征,气藏开发面临储层表征难、井位部署和效益开发难度大等系列挑战。为此,以川中地区安岳气田灯影组气藏为对象,通过地质工程一体技术化攻关,深化了对储层发育特征和成因机理的认识,提出了气藏开发新模式,创建形成了气藏高效开发的关键技术。研究结果表明:①灯影组储层主要为岩溶成因储层,具有“叠合岩溶差异控储”的发育特征;②岩溶储层非均质性强,“溶蚀相成因控储”可精细刻画储层的非均质性;③灯影组气藏宜采用“单井指标叠加论证气藏规模”的开发新模式;④创新形成了“双界面”岩溶古地貌恢复及定量刻画方法,并指导平面选区,其中Ⅰ+Ⅱ类井比例由评价期的40%提高到方案建设期的100%;⑤创建了小尺度缝洞识别、刻画及表征技术,并指导钻井轨迹设计,测试百万立方米气井比例由开发评价期的41.6%提高到建产期的60%;⑥配套完善了分段酸压工艺技术,高效动用了优质储层,并解放了低品位储层,储层渗透率由改造前的0.62 mD提高到酸压改造后的6.77 mD。结论认为,“十四五”期间,在上述开发技术的支持下,安岳气田由台缘带灯四段高效开发转向长期稳产和台内地区多层系效益开发,蓬莱含气区由单井高产转向区块高产和气藏规模建产,将强力支撑中国石油西南油气田公司“十四五”末天然气上产500×10^(8)m^(3)。

关键词：川中地区安岳气田蓬莱含气区震旦系小尺度缝洞叠合岩溶溶蚀相双界面法

TsCl-promoted sulfonylation of quinoline N-oxides with sodium sulfinates in water

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Chinese Chemical Letters 2019年第12期30卷 2287-2290页

作者： Sha peng Yan-Xi Song Jun-Yi He Shan-Shan Tang Jia-Xi Tan Zhong cao Ying-Wu Lin Wei-Min He Department of Chemistry Hunan University of Science and EngineeringYongzhou 425100China Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114China School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

An eco-friendly protocol for the synthesis of various 2-sulfonyl quinolines/pyridines through sulfonylation of heteroaromatic N-oxides with sodium sulfinates in water at ambient temperature under metal-and oxidant-free conditions has been *** mild reaction conditions,high reaction efficiency,operational simplicity,short reaction time and remarkable functional-group compatibility make the developed protocol very attractive for the preparation of 2-sulfonyl N-heteroaromatic compounds.

关键词： Quinoline N-oxides 2-Sulfonylquinolines Sodium sulfinates Sulfonylation In water

A Macroporous Cryogel with Enhanced Mechanical Properties for Osteochondral Regeneration In vivo

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Chinese Journal of Polymer Science 2023年第1期41卷 40-50页

作者： Xin-Yu Wu Jun Yang Fang-hui Wu Wang-Bei cao Tong Zhou Zhao-Yi Wang Chen-Xi Tu Zhong-Ru Gou Lei Zhang Chang-You Gao Ministry of Education Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China Department of Orthopaedics the Third Hospital Affiliated to Wenzhou Medical University&Rui’an People’s HospitalRui’an325200China Bio-nanomaterials and Regenerative Medicine Research Division Zhejiang-California International Nanosystem InstituteZhejiang UniversityHangzhou310058China

The dense networks of conventional hydrogel hinder the efficient cell penetration and thus tissue *** this study,a macroporous cryogel with excellent mechanical properties was designed and fabricated through cryogelation and crosslinking of methacrylated gelatin(Gel-MA)and gelatin grafted with 2-ureido-4[1H]-6-methyl-pyrimidinone(Gel-UPY).The successful modification of the two functional units on the side chain of gelatin was confirmed by ^(1)H-NMR and infrared *** macroporous structure of cryogel was verified by scanning electron microscopy and confocal *** compressive modulus of cryogel(110 kPa)was 2 magnitudes higher than that of the conventional hydrogel of the same chemical compositions(8 kPa).Both the hydrogel and cryogel exhibited excellent stress-recovery *** cryogel could well maintain the viability of chondrocytes and facilitated their migration into the scaffold *** being implanted into osteochondral defects in rabbits for 12 w,the Gel-MA/Gel-UPY cryogel better facilitated the regeneration of upper cartilage and subchondral bone compared to the conventional hydrogel.

关键词： Macroporous Cryogel Gelatin Ureido pyrimidinone Osteochondral regeneration

QTL Mapping for Plant Height Using Introgression Lines Derived from Zhonghui 8015 and Wild Rice(Oryza rufipogon)

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Rice science 2022年第6期29卷 503-506,I0002-I0006页

作者： YANG Qinqin ZHANG Yingxin XUE Pao WEN Xiaoxia LIU Ling XU peng ZHAN Xiaodeng cao Liyong CHENG Shihua WU Weixun China National Center for Rice Improvement/State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Northern Center of China National Rice Research Institute Shuangyashan 155600China

Many excellent genes in wild rice have been lost during the domestication of wild rice to cultivated *** this study,introgression lines(ILs)were produced with a wild rice(Oryza rufipogon)accession,BJ194,as a donor parent and an indica restorer line,Zhonghui 8015(ZH8015),as a recipient parent to map QTLs for plant *** identified four QTLs(qPH3.1,qPH3.2,qPH2,and qPH8)related to plant height distributed on chromosomes 2,3 and ***,we sequenced and analyzed qPH3.2 located in the interval of RM15753-RM3525,and found this QTL may be a new locus regulating rice plant height.

关键词： Oryza cultivated Zh

Identification in Chinese patients with GLIALCAM mutations of megalencephalic leukoencephalopathy with subcortical cysts and brain pathological study on Glialcam knock-in mouse models

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World Journal of Pediatrics 2019年第5期15卷 454-464页

作者： Zhen Shi hui-Fang Yan Bin-Bin cao Mang-Mang Guo Han Xie Kai Gao Jiang-Xi Xiao Yan-Ling Yang hui Xiong Qiang Gu Ming Li Ye Wu Yu-Wu Jiang Jing-Min Wang Department of Pediatrics Peking University First HospitalNo.1 Xi'an Men StreetWest DistrictBeijing 100034China Beijing Key Laboratory of Molecular Diagnosis and Study on Pediatric Genetic Diseases Peking University First HospitalBeijing 100034China Guangzhou Women and Children's Medical Center Guangzhou 510623China Department of Pediatrics Beijing Tian Tan HospitalCapital Medical UniversityBeijing 100050China Department of Radiology Peking University First HospitalBeijing 100034China Key Laboratory for Neuroscience Ministry of Education/National Health Commission of the People's Republic of ChinaPeking UniversityBeijing 100034China

Background Megalencephalic leukoencephalopathy with subcortical cysts(MLC)is a rare neurological degenerative disorder caused by the mutations of MLC1 or GLIALCAM with autosomal recessive or autosomal dominant inheritance and a different prognosis,characterized by macrocephaly,delayed motor and cognitive development,and bilateral abnormal signals in cerebral white matter(WM)with or without cysts on magnetic resonance imaging(MRI).This study aimed to reveal the clinical and genetic features of MLC patients with GLIALCAM mutations and to explore the brain pathological characteristics and prognosis of mouse models with different modes of *** Clinical information and peripheral venous blood were collected from six *** analysis was performed by Sanger sequencing of ***^(Arg92Trp/+)and Glialcam^(Lys68Met/Thr132Asn)mouse models were generated based on mutations from patients(c.274C>T(***92Trp)(c.203A>T(***68Met),and c.395C>A(***132Asn))).Brain pathologies of the mouse models at different time points were *** Six patients were clinically diagnosed with *** the six patients,five(Pt1-Pt5)presented with a heterozygous mutation in GLIALCAM(c.274C>T(***92Trp)or c.275G>C(***92Pro))and were diagnosed with MLC2B;the remaining patient(Pt6)with two compound heterozygous mutations in GLIALCAM(c.203A>T(***68Met)and c.395C>A(***132Asn))was diagnosed with *** mutation c.275C>G(***92Pro)has not been reported *** manifestations of the patient with MLC2A(Pt6)progressed with regression,whereas the course of the five MLC2B patients remained stable or *** Glialcam^(Arg92Trp/+)and Glialcam^(Lys68Met/Thr132Asn)mouse models showed vacuolization in the anterior commissural WM at 1 month of age and vacuolization in the cerebellar WM at 3 and 6 months,*** 9 months,the vacuolization of the GlialcamiLys68Met/Thr132Asn mouse model was heavier than that of the Glialcam^(Arg92Trp/+)mouse mode

关键词： GLIALCAM Knock-in mouse model Macrocephaly Megalencephalic leukoencephalopathy with subcortical cysts Vacuolization

Non-monotonic dependence of current upon i-width in silicon p–i–n diodes

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Chinese Physics B 2018年第6期27卷 341-344页

作者： Zheng-peng Pang Xin Wang Jian Chen Pan Yang Yang Zhang Yong-hui Tian Jian-Hong Yang Institute of Microelectronics School of Physical Science and Technology Lanzhou University Lanzhou 730000 China

Silicon p–i–n diodes with different i-region widths are fabricated and tested. It is found that the current shows the non-monotonic behavior as a function of i-region width at a bias voltage of 1.0 V. In this paper, an analytical model is presented to explain the non-monotonic behavior, which mainly takes into account the diffusion current and recombination current contributing to the total current. The calculation results indicate that the concentration ratio of p-region to n-region plays a crucial role in the non-monotonic behavior, and the carrier lifetime also has a great influence on this abnormal phenomenon.

关键词： semiconductor junction diodes transport properties

An alternative surgical technique for varicoceles:a preliminary experience of the microsurgical spermatic(distal end)-inferior or superficial epigastric vein anastomosis in symptomatic varicoceles associated with perineal pain

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Asian Journal of Andrology 2022年第6期24卷 624-627页

作者： Zi Wan Hai-Ming cao Bi-Cheng Yang Yong Gao Li Ding peng Luo Guang-Wen Yang Lin Ma Chun-Hua Deng The Andrology Department The First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China The Andrology Department The Reproductive Medicine CenterThe Seventh Affiliated HospitalSun Yat-sen UniversityShenzhen 518107China The Reproductive Medicine Center The Key Laboratory for Reproductive Medicine of Guangdong ProvinceThe First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China The Pathology Department The First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China The Urology Department Tongren Municipal People's HospitalTongren 554399China The Reproductive Medicine Center The Seventh Affiliated HospitalSun Yat-sen UniversityShenzhen 518107China

Many therapies are effective in treating varicoceles,including dilation of the pampiniform plexus in *** most common method of treatment is *** aimed to assess an alternative technique(microsurgical spermatic[distal end]-superficial or inferior epigastric vein anastomosis)that preserves the normal blood flow pattern for varicocele *** retrospectively analyzed 27 men with varicocele between October 2019 and July *** patients underwent microsurgical spermatic(distal end)-superficial or inferior epigastric vein *** prognosis was reviewed retrospectively with an additional survey conducted 3 months after *** mean±standard deviation of the age was 26.1±7.3 years in patients with microsurgical spermatic(distal end)-superficial or inferior epigastric vein *** maximum diameter of the varicocele vein,perineal pain score,sperm density,and forward movement of sperm improved over 3 months after *** spermatic(distal end)-superficial or inferior epigastric vein anastomosis is a safe and efficient surgical treatment for varicoceles.

关键词： microsurgery pain varicocele vein anastomosis