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铅胁迫对不同品种玉米根系钾吸收的影响

分子植物育种 2024年第6期22卷 1968-1972页

作者：贺鹏亮崔玲翁庆北牛晓娟方正王玉倩贵州师范大学生命科学学院贵阳550001 黔南民族师范学院都匀558000

为阐明铅胁迫对植物根系钾吸收的机制及重金属铅植物修复的模式,本研究以不同浓度Pb^(2+)处理4种玉米,探究其对玉米总钾吸收速率和由NSCCs介导的钾吸收速率诱导的影响,以及4种玉米对Pb吸收的变化趋势。结果表明,Pb^(2+)可以影响NSCCs的... 详细信息

为阐明铅胁迫对植物根系钾吸收的机制及重金属铅植物修复的模式,本研究以不同浓度Pb^(2+)处理4种玉米,探究其对玉米总钾吸收速率和由NSCCs介导的钾吸收速率诱导的影响,以及4种玉米对Pb吸收的变化趋势。结果表明,Pb^(2+)可以影响NSCCs的钾吸收,但不同品种玉米根系NSCCs对铅的敏感性不同,随着Pb^(2+)浓度的增大,品种间的总钾吸收差异和NSCCs钾吸收差异趋近于零。‘金玉818’的铅吸收量增幅最显著,可作为潜在的铅污染治理的备选品种。本研究补充了玉米根系通过NSCCs进行离子吸收方面的资料,为进一步了解铅、钾离子的吸收机制提供了研究基础。

关键词：铅胁迫非选择性阳离子通道钾吸收

Facile Synthesis of SnO_2 Nanotube Arrays by Using ZnO Nanorod Arrays as Sacrificial Templates

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Journal of Materials Science & Technology 2013年第11期29卷 1053-1058页

作者： Yafang Tu Qiuming Fu xiaojuan niu Jianping Sang Zhijie Tan Xianwu Zou Department of Physics Institute for Interdisciplinary ResearchJianghan University School of Materials Science and Engineering Wuhan Institute of Technology Department of Physics Wuhan University

SnO2 nanotube arrays have been synthesized by means of a simple and low-cost method. The ZnO nanorod arrays prepared by aqueous chemical growth method were used as templates. By liquid phase deposition, SnO2 nanotubes were obtained with proper deposition time. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction were used to characterize the morphologies and structures of the products, and the formation mechanism was discussed according to the experimental results.

关键词： Nanostructure Zinc oxide Tin oxide

Highly effective extraction of oil from soybean by pretreatment of solid-state fermentation with fungi

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Frontiers of Chemical Science and Engineering 2011年第1期5卷 122-125页

作者： xiaojuan niu Shuyi QIU Yuangen WU Jie YUAN Yingying XU Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy Guiyang 550003China College of Life Science Guizhou UniversityGuiyang 550025China College of Chemical and Chemical Engineering Guizhou UniversityGuiyang 550003China

The solid-state prefermentation by Aspergillus niger(CICC 2377)and Aspergillus flavus(CICC 40536)was employed to increase the oil extraction yield from *** influence of incubation time on oil yield was *** maximum oil yield extracted from the substrate prefermented by Aspergillus niger for 96 h was 23%,which increased by 47.4%compared with control(15.6%).In the same fermentation conditions,the maximum oil yield extracted from substrate prefermented by Aspergillus flavus was 21.6%,which increased by 38.5%compared with control(15.6%).The quality of soybean oil was not changed obviously by the pretreatment of fermentation with fungi.

关键词： soybean Aspergillus niger Aspergillus flavus solid-state fermentation extraction of oil

The O1 Atmosphere Tide in the Mesosphere （80-100 km） in Wuhan, China （30° N, 114° E）

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Journal of Earth Science and Engineering 2013年第9期3卷 621-628页

作者： xiaojuan niu Jiangang Xiong Yafang Tu Xuan Ke School of Physics and Information Engineering Jianghan University Wuhan 430056 China Key Laboratory of lonospheric Environment Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029China

Horizontal winds in the mesosphere （80-100 km） were measured by meteor radar in Wuhan, China （30° N, 114° E） over a 45-month interval in 2002-2005 and the data examined to investigate the monthly mean behavior of the Ol tide. A clear seasonal variation in amplitude of the O1 tide ranging from -0.3 m/s to 2.6 m/s was observed. In most months, the northward and eastward components differed by about 7 lunar hours with the eastward component leading. Comparison of the amplitudes of the M2 and O1 tides suggests the O1 tide is quite stronger over Wuhan, China. The amplitude ratio of the O1 tide to the M2 tide is quite stronger than that the gravitational potential being 0.41. The vertical wavelength of the O1 tide differs on a monthly basis. Height profiles of the O1 tide showed obvious height variation. The O1 tide is stronger in January and July. In different month, the vertical wavelength for the O1 tide changes considerably at the same height. The year＇s variation trend of the northward and eastward components is very similar in both phase and amplitude.

关键词： O1 tide M2 tide atmosphere lunar

A high-performance electromagnetic energy harvester for scavenging ultra-low frequency vibration energy of human foot movement

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Science China(Technological Sciences) 2024年第5期67卷 1391-1400页

作者： HU JiaJun QIAN Shuo WU Hui HU DongXu niu LiXin BI XiaoXue ZHANG Jie HOU xiaojuan GENG WenPing MU JiLiang HE Jian CHOU XiuJian Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan030051China School of Software North University of ChinaTaiyuan030051China

In our daily lives,low-frequency kinetic energy primarily manifests as ***,effective harnessing of lowfrequency kinetic energy remains a formidable *** paper proposes a rope-driven rotor that rotates around an axis and consists of an ultra-high-molecular-weight polyethylene(UHMWPE)wire wrapped around a metal *** rotor can convert ultra-low frequency vibration/linear motion into rapid rotation by pressing the top at low frequencies and driving the rope for a quick *** harvester can generate up to 36.25 m W power using a 0.1-mm-diameter UHMWPE wire as the rotor when periodically pressed down to 20 mm at a frequency of 1 Hz.A simple power generation floor is assembled,generating 28.58-m W power with a matching load at a frequency of 1.5 ***,the harvester can increase the charging voltage of a 0.47-F supercapacitor from 0 to 6.8 V within 10 *** addition,the harvester can harvest energy through a light finger press motion,and the energy obtained can also support the continuous operation of multiple electronic devices *** study introduces an effective method for harvesting ultra-low frequency energy and has great prospects in the field of power generation floor and human movement energy harvesting.

关键词： electromagnetic energy harvester rope-shaft coupling structure human motion ultra-low frequency

“乙类乙管”疫情防控政策下甘肃省兰州市中青年人群新冠病毒感染的流行病学调查及思考

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中国呼吸与危重监护杂志 2023年第7期22卷 480-485页

作者：张蕊燕忠生牛小娟中国人民解放军联勤保障部队第九四〇医院中医康复科甘肃兰州730050

目的探讨“乙类乙管”疫情防控政策以来甘肃省兰州市中青年人群感染新冠病毒的相关流行病学特征。方法收集“乙类乙管”疫情防控政策发布之日起4个月内(2022年11月8日—2023年2月28日)甘肃省兰州市两所三甲医院的各类人员共1800人,调查... 详细信息

目的探讨“乙类乙管”疫情防控政策以来甘肃省兰州市中青年人群感染新冠病毒的相关流行病学特征。方法收集“乙类乙管”疫情防控政策发布之日起4个月内(2022年11月8日—2023年2月28日)甘肃省兰州市两所三甲医院的各类人员共1800人,调查研疫苗接种情况、核酸抗原抗体检测情况、感染的具体时间、主要症状、病情程度等。结果参与本次调查研究1800人,有1685人全程接种了新冠疫苗(93.6%),1565人感染了新冠病毒(86.9%)。1565例感染者中,同时完成核酸和抗原检测523人(33.4%),仅完成核酸检测者382人(24.4%),仅完成抗原检测者490人(31.3%),恢复期IgG血清学检测170人(10.9%)。感染者轻型和中型共1490人(95.2%),重型及危重型共75人(4.8%),住院人数96人(6.1%),无死亡病例(0%)。2022年11月上半月感染92例(5.9%),11月下半月感染141例(9.1%),12月上半月感染例630例(40.3%),12月下半月感染553例(35.3%),2023年1月上半月感染109例(7.0%),1月下半月感染38例(2.3%),2月上半月感染2例(0.1%),2月下半月感染0例(0%)。1565例感染者中,825人(52.7%)以呼吸道症状为主。293人(18.7%)以消化道症状为主。257人(16.4%)以植物神经紊乱症状为主。140人(8.9%)以嗅觉味觉减弱、肢体疼痛等其他症状为主。48人(3.3%)感染后无症状。结论甘肃地区中青年人群有较高的疫苗接种率。“乙类乙管”疫情防控政策以来,中青年人群新冠病毒感染率高,抗原检测人数多于核酸检测,感染以后大多数属于轻型和中型,重症及危重患者少,住院率低,无死亡病例。感染高峰期出现在2022年12月的上半月,至2023年2月下半月感染人数清零。新冠病毒感染的主要症状以呼吸道为主,其次是消化道和植物神经紊乱,完全无症状者较少。

关键词： "乙类乙管"防疫政策中青年人群新冠病毒感染流行病学

Coupling between mesosphere and ionosphere over Beijing through semidiurnal tides during the 2009 sudden stratospheric warming

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Coupling between mesosphere and ionosphere over Beijing thro...

中国科学院地质与地球物理研究所2013年度（第13届）学术年会

作者： Jiangang Xiong Weixing Wan Feng Ding Libo Liu Baiqi Ning xiaojuan niu Key Laboratory of Ionospheric Environment Institute of Geology and GeophysicsChinese Academy of Sciences Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of Sciences School of Physics & Information Engineering Jianghan University

[1]Sudden stratospheric warming(SSW) in the winter of 2008/2009 is the strongest recorded SSW *** enhancement in semidiurnal variation of ionospheric TEC(total electron content) with phase shift forward is shown during 22 to 27 January 2009,based on the TEC observations in Beijing(40.30°N,116.19°E geographic,39.73°N dip latitude). We focus on finding the reason for the TEC *** observed by an all-sky meteor radar in the same observatory are used to study mesospheric *** semidiurnal solar tide in the mesosphere starts to increase before the SSW and maintains oscillation with period 16-20 days during the *** semidiurnal lunar tides in TEC and wind start to increase on 17 and 15 January,*** the semidiurnal

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老年患者胆总管结石的治疗现状与进展

中华老年医学杂志 2017年第3期36卷 348-352页

作者：牛小娟宋京海北京医院国家老年医学中心肝胆胰外科 100730

胆总管结石是老年患者中的常见病之一。近20年来，微创技术发展迅速，为患者的治疗提供了不同的选择，包括内镜下逆行胰胆管造影术、腹腔镜下胆总管探查术等。合理的选择治疗手段对于减少老年患者术后并发症并改善其预后有很大帮助。

关键词：老年胆总管结石

High-throughput screening of novel TFEB agonists in protecting against acetaminopheninduced liver injury in mice

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Acta Pharmaceutica Sinica B 2024年第1期14卷 190-206页

作者： xiaojuan Chao Mengwei niu Shaogui Wang Xiaowen Ma Xiao Yang Hua Sun Xujia Hu Hua Wang Li Zhang Ruili Huang Menghang Xia Andrea Ballabio Hartmut Jaeschke Hong-Min Ni Wen-Xing Ding Department of Pharmacology Toxicology and TherapeuticsUniversity of Kansas Medical CenterKansas CityKS 66160USA NMPA Key Laboratory for Research and Evaluation of Drug Metabolism&Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou 510515China Department of Oncology the First Affiliated Hospital of Anhui Medical UniversityAnhui Medical UniversityHefei 230032China National Center for Advancing Translational Sciences National Institutes of HealthBethesdaMD 20892USA Telethon Institute of Genetics and Medicine TIGEMPozzuoliNaples 80131Italy Medical Genetics Department of Translational MedicineFederico II UniversityNaples 80131Italy Department of Molecular and Human Genetics Baylor College of MedicineHoustonTX 77030USA Department of Internal Medicine Division of GastroenterologyHepatology&MotilityUniversity of Kansas Medical CenterKansas CityKS 66160USA

Macroautophagy(referred to as autophagy hereafter)is a major intracellular lysosomal degradation pathway that is responsible for the degradation of misfolded/damaged proteins and *** studies showed that autophagy protects against acetaminophen(APAP)-induced injury(AILI)via selective removal of damaged mitochondria and APAP protein *** lysosome is a critical organelle sitting at the end stage of autophagy for autophagic degradation via fusion with *** the present study,we showed that transcription factor EB(TFEB),a master transcription factor for lysosomal biogenesis,was impaired by APAP resulting in decreased lysosomal biogenesis in mouse *** loss-of and gain-of function of hepatic TFEB exacerbated or protected against AILI,***,overexpression of TFEB increased clearance of APAP protein adducts and mitochondria biogenesis as well as SQSTM1/p62-dependent non-canonical nuclear factor erythroid 2-related factor 2(NRF2)activation to protect against *** also performed an unbiased cell-based imaging high-throughput chemical screening on TFEB and identified a group of TFEB *** these agonists,salinomycin,an anticoccidial and antibacterial agent,activated TFEB and protected against AILI in *** conclusion,genetic and pharmacological activating TFEB may be a promising approach for protecting against AILI.

关键词： Autophagy DILI Drug screening Hepatotoxicity Lysosome Mitochondria Mitophagy NRF2