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Field released transgenic papaya effect on soil microbial communities and enzyme activities

Journal of Environmental Sciences 2006年第4期18卷 734-740页

作者： WEI xiang-dong ZOU hui-ling CHU Lee-min LIAO Bin YE Chang-min LAN Chong-yu School of Life Sciences Sun Yat-sen University Guangzhou 510275 China Department of Biology The Chinese University ofHong Kong Shatin Hong Kong China

Soil properties, microbial communities and enzyme activities were studied in soil amended with replicase （RP）-transgenic or non-transgenic papaya under field conditions. Compared with non-transgenic papaya, significant differences （P〈0.05） were observed in total nitrogen in soils grown with transgenic papaya. There were also significant differences （P〈0.05） in the total number of colony forming units （CFUs） of bacteria, actinomycetes and fungi between soils amended with RP-transgenic plants and non-transgenic plants. Compared with non-transgenic papaya, the total CFUs of bacteria, actinomycetes and fungi in soil with transgenic papaya increased by 0.43-1.1, 0.21-0.80 and 0.46-0.73 times respectively. Significantly higher （P〈0.05） CFUs of bacteria, actinomycetes and fungi resistant to kanamycin （Km） were obtained in soils with RP-transgenic papaya than those with non-transgenic papaya in all concentrations of Km. Higher resistance quotients for Km＇（kanamycin resistant） bacteria, actinomycetes and fungi were found in soil planted with RP-transgenic papaya, and the resistance quotients for Km＇ bacteria, actinomycetes and fungi in soils with transgenic papaya increased 1.6-4.46, 0.63-2.5 and 0.75-2.30 times. RP-transgenic papaya and non-transgenic papaya produced significantly different enzyme activities in arylsulfatase （5.4-5.9x）, polyphenol oxidase （0.7-1.4x）, invertase （0.5-0.79x）, cellulase （0.23-0.35x） and phosphodiesterase （0.16-0.2x）. The former three soil enzymes appeared to be more sensitive to the transgenic papaya than the others, and could be useful parameters in assessing the effects of transgenic papaya. Transgenic papaya could alter soil chemical properties, enzyme activities and microbial communities.

关键词： transgenic papaya soil microbes enzyme activity kanamycin resistance resistance quotient

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Anesthesia for extracorporeal membrane oxygenation-assisted thoracoscopic lower lobe subsegmental resection in a patient with a single left lung:A case report

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World Journal of Clinical Cases 2023年第18期11卷 4368-4376页

作者： xiang-Feng Wang Zi-Yan Li Lei Chen Long-xiang Chen Fang Xie hui-Qin Luo Department of Anesthesiology People's Hospital Affiliated to Fujian University of Traditional Chinese MedicineFuzhou 350004Fujian ProvinceChina

BACKGROUND It is difficult and risky for patients with a single lung to undergo thoracoscopic segmental pneumonectomy,and previous reports of related cases are *** introduce anesthesia for Extracorporeal membrane oxygenation(ECMO)-assisted thoracoscopic lower lobe subsegmental resection in a patient with a single left *** SUMMARY The patient underwent comprehensive treatment for synovial sarcoma of the right lung and nodules in the lower lobe of the left *** showed pulmonary function that had severe restrictive ventilation disorder,forced expiratory volume in 1 second of 0.72 L(27.8%),forced vital capacity of 1.0 L(33%),and maximal voluntary ventilation of 33.9 L(35.5%).Lung computed tomography showed a nodular shadow in the lower lobe of the left lung,and lung metastasis was *** multidisciplinary consultation and adequate preoperative preparation,thoracoscopic left lower lung lobe S9bii+S10bii combined subsegmental resection was performed with the assistance of total intravenous anesthesia and ECMO intraoperative pulmonary protective *** patient received postoperative ICU supportive *** surgical treatment,the patient was successfully withdrawn from ECMO on postoperative Day *** tracheal tube was removed on postoperative Day 4,and she was discharged from the hospital on postoperative Day *** The multi-disciplinary treatment provided maximum medical optimization for surgical anesthesia and veno-venous ECMO which provided adequate protection for the patient's perioperative treatment.

关键词： Left single lung Subpulmonary segmental resection Extracorporeal membrane oxygenation Thoracoscopic Anesthesia Case report

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Clinical features of posterior microphthalmic and nanophthalmic eyes

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International Journal of Ophthalmology(English edition) 2018年第11期11卷 1829-1834页

作者： Jing-Jing Liu Yi-Ye Chen xiang Zhang Pei-Quan zhao Department of Ophthalmology Xin Hua Hospital Shanghai Jiao Tong University School of Medicine

AIM： To clinically differentiate nanophthalmos（NO） and posterior microphthalmos（PM） and to explore the mechanisms related to papillomacular folds（PMF）.METHODS： Medical records of 34 unrelated patients with microphthalmos（54 eyes） from April 2009 to October 2017 were retrospectively ***： Fourteen eyes of 7 unrelated patients with NO and PM were included in the study. The presenting age of the NO cohort was significantly higher compared with the PM cohort（NO： 27±16 y; PM： 3.7±0.6 y）. PMF was more likely to occur in cases with PM than in NO（25% in NO, 100% in PM）. The anatomic features of PMF from optical coherence tomography（OCT） included： ganglion cell layer, inner plexiform layer, inner nuclear layer, outer plexiform layer and outer nuclear layer. In eyes without an apparent PMF（these were all NO eyes）, rudimentary fovea without a foveal pit was noted. Four eyes that were NO developed angle closure glaucoma. Three NO eyes developed exudative retinal detachment and were successfully treated with lamellar ***： Posterior segment changes are pervasive both in PM and NO. Complications like angle closure glaucoma and exudative retinal detachment are likely to occur in eyes with NO but not with PM. Detailed OCT analysis found that PMF was partially a neural retinal issue, suggesting that redundancy of retinal issues involved only inner retinal layers.

关键词： nanophthalmos non-rhegmatogenous retinal detachment optical coherence tomography papillomacular folds posterior microphthalmos rudimentary fovea

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Experimental study on the spatial distribution of particle rotation in the upper dilute zone of a cold CFB riser

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第7期9卷 922-931页

作者： Xue-cheng WU Qin-hui WANG Chen TIAN Zhong-yang LUO Meng-xiang FANG Ke-fa CEN State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China

Particle rotation plays an important role in gas-solid flows. This paper presents an experimental investigation on the spatial distribution of average rotation speed for glass beads in the upper dilute zone of a cold circulating fluidized bed(CFB) riser. It is shown that in the horizontal direction,the average rotation speed in the near-wall area is larger than that in the center area,while in the vertical direction,it decreases as the height increases. The reason resulting in this distribution is analyzed by considering several factors including particle size,particle shape,particle number density,particle collision behavior,and the surrounding flow field,etc. The effects of CFB operation conditions on the spatial distribution of average rotation speed are also studied. The results show that the increasing superficial gas velocity increases the average rotation speed of particles in the near wall area but takes nearly no effect on that in the center area. The external solids mass flux,however,takes the opposite effect. It is found that the average rotation speeds of particles in both areas are increased as the total amount of bed material increases.

关键词： Particle rotation Gas-solid two-phase flow Circulating fluidized bed (CFB)

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Tuning Structure of Manganese Oxides to Achieve High-performance Aqueous Zn Batteries

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Chinese Journal of Structural Chemistry 2020年第3期39卷 388-394,375页

作者： zhao Qing-He DING Shou-xiang SONG Ao-Ye QIN Run-Zhi PAN Feng School of Advanced Materials Peking UniversityShenzhen Graduate SchoolShenzhen 518055China

As a key material for the development of mild aqueous rechargeable Zn/MnO2 cells, MnO2 has attracted much attention. This article presents some issues of MnO2, provides some strategies improving battery performance of MnO2 electrode, as well as makes a perspective on future research and development of MnO2 materials. This article offers a profound insight on structure/property relationship of MnO2, and benefits a lot to those involved in energy storage and conversion applications.

关键词： manganese oxides aqueous Zn battery phase structure charge storage mechanism electrochemistry

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SF_(6)气体密度状态检测的快速算法

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内蒙古电力技术 2024年第1期42卷 47-52页

作者：刘天宇赵磊种佳丽赵俊冯汝明余辉常敏内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司呼和浩特010020 内蒙古自治区新型电力系统智能电网企业重点实验室呼和浩特010020 上海乐研电气有限公司上海201802

针对SF_(6)气体密度计算过程复杂的问题,提出了快速判定SF_(6)气体密度的算法,以220 kV气体绝缘金属封闭开关设备灭弧室外其他气室中SF_(6)气体密度状态的判定为例,介绍了该算法的基本原理和实现过程,并通过仿真计算比较了本文算法与现... 详细信息

针对SF_(6)气体密度计算过程复杂的问题,提出了快速判定SF_(6)气体密度的算法,以220 kV气体绝缘金属封闭开关设备灭弧室外其他气室中SF_(6)气体密度状态的判定为例,介绍了该算法的基本原理和实现过程,并通过仿真计算比较了本文算法与现有算法的实时性,结果表明,本文算法实现过程简单,实时性大幅提高,可促进大范围、多节点SF_(6)气体密度状态统一集中检测的数字化电子设备的发展和应用。

关键词：高压电气设备 SF_(6)气体密度状态判定压力

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Effects of Thickness on Mechanical Properties of 2D C/SiC Torque Tube

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Journal of Wuhan University of Technology(Materials Science) 2019年第5期34卷 1049-1054页

作者： zhao hui ZHANG Litong CHEN Bo ZHANG Jiaxin Science and Technology on Thermostructure Composite Materials Laboratory Northwestern Polytechnical University

Different failure modes and morphologies were found in the chemical vapor infiltration(CVI) 2D C/SiC torque tubes with different thickness. To characterize the density and porosity of the ceramic matrix composite(CMC) torque tube, a CT test was conducted. The archimedes drainage method was used to measure the density and porosity, and by adopting FEM software, the stress distribution and failure strength of the ceramic matrix composite torque tubes were calculated. A universal material test machine was used to implement torsional tests. Different torsional behaviors of CMC torque tubes with two different thicknesses were showed in the stress-strain curves. To analyze the predominant failure factors, SEM was used to observe the failure morphologies and cracks. 5 mm thickness CMC torque tube has reasonable fracture morphologies and a higher maximum shear strength and modulus.

关键词： C/SiC torque tube thickness torque capacity failure analysis

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岭南传统天灸4号方治疗轻度抑郁障碍的临床疗效观察

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广州中医药大学学报 2024年第4期41卷 959-964页

作者：周忆蓉方慧张琬欣吉祥符文彬广州中医药大学第七临床医学院针灸科广东深圳518100 广东省中医院针灸科广东广州510120

【目的】观察岭南传统天灸4号方(由黄芥子、吴茱萸、郁金等中药组成)治疗轻度抑郁障碍的临床疗效,为轻度抑郁障碍人群的治疗提供新的临床思路。【方法】将61例轻度抑郁障碍患者随机分为试验组31例和对照组30例。试验组给予岭南传统天灸... 详细信息

【目的】观察岭南传统天灸4号方(由黄芥子、吴茱萸、郁金等中药组成)治疗轻度抑郁障碍的临床疗效,为轻度抑郁障碍人群的治疗提供新的临床思路。【方法】将61例轻度抑郁障碍患者随机分为试验组31例和对照组30例。试验组给予岭南传统天灸4号方天灸治疗,对照组给予岭南传统天灸4号方安慰剂天灸治疗。每周治疗2次,每次治疗间隔3~4 d,疗程为6周。观察2组患者治疗前后汉密尔顿抑郁量表17项(HAMD-17)评分和患者健康问卷抑郁症筛查量表(PHQ-9)评分的变化情况,并评价2组患者的临床疗效和安全性。【结果】(1)疗效方面,治疗6周后,试验组的总有效率为77.42%(24/31),对照组为26.67%(8/30),组间比较(秩和检验),试验组的疗效明显优于对照组,差异有统计学意义(P<0.01)。(2)量表评分方面,治疗后,2组患者的HAMD-17评分和PHQ-9评分均较治疗前降低(P<0.01),且试验组对HAMD-17评分和PHQ-9评分的降低幅度均明显优于对照组,差异均有统计学意义(P<0.01)。(3)安全性方面,研究过程中,有5例不良事件的发生与本次天灸治疗相关,且5例不良事件均发生在试验组中,均为穴位贴敷处发生轻微水泡,经相关处理后均可继续参与本次试验。【结论】岭南传统天灸4号方可以有效改善轻度抑郁障碍患者临床症状,且具有较高的安全性。

关键词：天灸岭南传统天灸4号方抑郁障碍临床疗效安全性

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A high-level synthesis based dual-module redundancy with multi-residue detection(DMR-MRD)fault-tolerant method for on-board processing satellite communication systems

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High Technology Letters 2014年第3期20卷 245-252页

作者：杨文慧 Chen xiang Wang Yu zhao Ming Wang Jing Communication Engineering of Xiamen University Aerosapce Center Tsinghua University Department of Electronic Engineering Tsinghua University Wireless and Mobile Communication Technology R&D Center Tsinghua University

On board processing(OBP) satellite systems have obtained more and more attentions in recent years because of their high efficiency and ***,the OBP transponders are very sensitive to the high energy particles in the space radiation *** event upset(SEU)is one of the major radiation effects,which influences the satellite reliability *** modular redundancy(TMR) is a classic and efficient method to mask ***,TMR uses three identical modules and a comparison logic,the circuit size becomes unacceptable,especially in the resource limited environments such as OBP *** that,a new SEU-tolerant method based on residue code and high-level synthesis(HLS) is proposed,and the new method is applied to FIR filters,which are typical structures in the OBP *** simulation results show that,for an applicable HLS scheduling scheme,area reduction can be reduced by 48.26%compared to TMR,while fault missing rate is 0.15%.

关键词： single event upset (SEU) residue code triple modular redundancy (TMR) high-level synthesis (HLS) fault missing rate

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郑州市4种园林树木光合特性及其影响因素研究

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南京林业大学学报（自然科学版） 2024年第5期48卷 105-112页

作者：李喜梅赵君静回祎黄鑫高春雨牛雅璇廖晓宇于晨一河南农业大学林学院河南郑州450002

【目的】以女贞(Ligustrum lucidum)、荷花玉兰(Magnolia grandiflora)、悬铃木(Platanus orientalis)、国槐(Styphnolobium japonicum)等4种郑州市常见园林树木为研究对象,比较了生理及环境因子对树木净光合速率的影响,为郑州市绿地生... 详细信息

【目的】以女贞(Ligustrum lucidum)、荷花玉兰(Magnolia grandiflora)、悬铃木(Platanus orientalis)、国槐(Styphnolobium japonicum)等4种郑州市常见园林树木为研究对象,比较了生理及环境因子对树木净光合速率的影响,为郑州市绿地生态建设及优选树种提供理论依据。【方法】分别测量4种园林树木在不同季节的光合特性、叶表滞尘量及生长环境的温度和湿度,从生理环境的角度出发,使用双因素方差分析比较了不同季节各树种的光合特性差异,通过广义线性混合模型和结构方程模型探讨了不同因子之间的相互作用及其对树种光合速率的影响。【结果】4种园林树木净光合速率在不同季节均存在显著性差异(P<0.05),国槐的净光合速率显著高于其他树种,各树种夏季的净光合速率显著高于其他季节。生理因子(气孔导度和蒸腾速率)以及环境因素(滞尘量和湿度)与净光合速率有显著的相关关系(P<0.05)。湿度对植物的净光合速率有最显著的直接作用和间接作用,是影响植物光合作用的关键环境因素。【结论】国槐的净光合速率高于其他树种,女贞、荷花玉兰的光合特性与环境、生理因素之间的相关性较强。

关键词：园林树木光合特性生理和环境因子结构方程郑州市

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