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Contrasting Response Patterns of Rice Phyllosphere Bacterial Taxa to Elevated CO_2

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Pedosphere 2014年第4期24卷 544-552页

作者： REN Gai-Di ZHU jian-Guo jia zhong-Jun Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 China University of Chinese Academy of Sciences Beijing 100049 China

A vast number of microorganisms colonize the leaf surface of terrestrial plants, known as the phyllosphere, and these microorganisms are thought to be of critical importance in plant growth and health. However, the taxonomic identities and ecological functions of the microorganisms inhabiting the rice phyllosphere remain poorly understood. Using a massive, parallel pyrosequencing technique, we identified the phyllosphere bacterial taxa of four different rice varieties and investigated the microbial response to elevated CO2 （eCO2） in a rice field of a free-air CO2 enrichment （FACE） facility located in jiangsu Province, China. The results showed that the dominant phylotype, the Enterobacteriaceae family of Gammaproteobacteria~ accounted for 70.6%-93.8% of the total bacterial communities in the rice phyllosphere. The dominant phylotype was stimulated by eCO2, with its relative abundance increasing from 70.6%-75.2% at ambient CO2 （aCO2） to 86.5%-93.8% at eCO2 in the phyllosphere of rice varieties IIYou084 （TY-084）, YangLiangYou6 （YLY-6）, and ZhenXian96 （ZX-96）. The rare phylotypes, including the bacterial taxa of Sphingobacteriaceae, Xanthomonadaceae, Oxalobacteraceae, Clostridiaceae, and Pseudomonadaceae, were suppressed and their relative abundance decreased from 13.4%-23.0% at aCO2 to 1.47% 6.11% at eGO2. Furthermore, the bacterial diversity indices decreased at eCO2 in the phyllosphere of the rice varieties TY-084, YLY-6, and ZX-96. In contrast, an opposite response pattern was observed for the rice variety of YangDao8 （YD-8）. In the phyllosphere of this variety, the relative abundance of the dominant phylotype, Enterobacteriaceae, decreased from 94.1% at aCO2 to 81.4% at eCO2, while that of the rare phylotypes increased from 3.37% to 6.59%. In addition, eCO2 appeared to stimulate bacterial diversity in the rice variety YD-8. Our results suggest that the phyllosphere microbial response to eCO2 might be relative abundance-dependent in paddy fields.

关键词： bacterial diversity free-air CO2 enrichment microbial response paddy field pyrosequencing rice variety

Indirect measurement technology of new energy vehicles? braking force under dynamic braking conditions

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Advances in Manufacturing 2019年第4期7卷 389-400页

作者： Sen-Ming zhong Gui-Xiong Liu jia-jian Wu Bo Zeng School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510640People's Republic of China State Key Laboratory of Environmental Adaptability for Industrial Products Guangzhou 510663People's Republic of China

Currently,direct braking-force measurement under dynamic conditions requires a considerable modification to the vehicles and has poor compatibility because there are many types of ***,in this paper,an indirect measurement method of new-energy vehicles,braking force under dynamic braking conditions is *** mechanical wheel and axle model at low/idling/high speeds is established using the piston-pressure formula,force transfer in the brake-wheel cylinder,relative movement between the wheel and the roller,among *** this basis,the relationship between wheel braking force and roller-linear acceleration is further *** method does not alter existing vehicle structures or sensor *** standard sealing bolt is temporarily replaced with a hydraulic sensor for coefficient ***,the braking force can be indirectly calculated using the roller-linear velocity *** method has characteristics of efficiency and high accuracy without refitting vehicles.

关键词： Braking force Indirect measurement technology Vehicles Dynamic braking condition Electromagnetic interference(EMI)test

Spatially-separated and photo-enhanced semiconductor corrosion processes for high-efficient and contamination-free electrochemical nanoimprint lithography

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Science China Chemistry 2022年第4期65卷 810-820页

作者： Hantao Xu Lianhuan Han jian-jia Su zhong-Qun Tian Dongping Zhan Key Laboratory of Physical Chemistry of Solid Surfaces(PCOSS) Engineering Research Center of Electrochemical Technologies of Ministry of EducationDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Department of Mechanical and Electrical Engineering School of Aerospace EngineeringXiamen UniversityXiamen 361005China

Free of any thermoplastic or photocuring resists, electrochemical nanoimprint lithography(ECNL) has emerged as an alternative nanoimprint way to fabricate three-dimensional micro/nano-structures(3D-MNSs) directly on a semiconductor wafer by a spatially-confined corrosion reaction induced by the metal/semiconductor contact potential. However, the consumption of electron acceptors in the ultrathin electrolyte between imprint mold and semiconductor wafer will slow down or even cease the corrosion rate. To solve this problem, we change the short-circuited corrosion cell into a spatially-separated primary cell: the imprint mold compacted gallium arsenide(GaAs) wafer in the anodic chamber while the platinum(Pt) plate connected to the imprint mold in the cathodic chamber. Thus, the GaAs corrosion rate will be stabilized in its limiting steady-state current density because of the abundant source of electron acceptors in the catholic chamber. The corrosion processes can be photo-enhanced by white-light illumination. Consequently, both the accuracy and the efficiency are promoted dramatically, which are demonstrated by the excellent performance of the fabricated binary optical elements. Moreover, the contamination problem caused by the electron acceptors is totally avoided. All the results prove that this novel ECNL mode is competitive and prospective in imprinting 3D-MNSs directly on semiconductor wafer.

关键词： nanoimprint lithography electrochemical microfabrication semiconductor corrosion semiconductor microdevices 3D functional micro/nano-structures

Two New Neolignan Glucosides from Pedicularis Verticillata

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Chemical Research in Chinese Universities 1997年第2期13卷 82-83页

作者： SU Bao-ning SHEN Xiu-min jia zhong-jian Department of Chemistry and State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou730000

ＴｗｏＮｅｗＮｅｏｌｉｇｎａｎＧｌｕｃｏｓｉｄｅｓｆｒｏｍＰｅｄｉｃｕｌａｒｉｓＶｅｒｔｉｃｉｌａｔａ＊ＳＵＢａｏ－ｎｉｎｇ，ＳＨＥＮＸｉｕ－ｍｉｎａｎｄＪＩＡＺｈｏｎｇ－ｊｉａｎ＊＊（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅ... 详细信息

ＴｗｏＮｅｗＮｅｏｌｉｇｎａｎＧｌｕｃｏｓｉｄｅｓｆｒｏｍＰｅｄｉｃｕｌａｒｉｓＶｅｒｔｉｃｉｌａｔａ＊ＳＵＢａｏ－ｎｉｎｇ，ＳＨＥＮＸｉｕ－ｍｉｎａｎｄＪＩＡＺｈｏｎｇ－ｊｉａｎ＊＊（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙａｎｄＳｔａｔｅＫｅｙ...

关键词： Pedicularis verticillata Scrophulariaceae Neolignan glucoside Verti-cillatoside A Verticillatoside B 2D NMR HMBC

腹腔镜下腹壁侵袭性纤维瘤切除一期腹壁重建的病例报告

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岭南现代临床外科 2022年第2期22卷 191-193页

作者：钟家健马东恒陈斯聪赵永灵深圳大学医学部广东深圳518061 华中科技大学协和深圳医院肝胆胰腺外科广东深圳518052 华中科技大学协和深圳医院胃肠外科广东深圳518052

本文回顾性分析1例我院行腹腔镜下腹壁侵袭性纤维瘤切除联合自固定补片一期腹壁重建的患者,并查阅文献,探索其临床特点及诊疗方案,以供临床工作者借鉴。

关键词：腹壁侵袭性纤维瘤腹腔镜自固定补片

Pharmacological targeting cGAS/STING/NF-κB axis by tryptanthrin induces microglia polarization toward M2 phenotype and promotes functional recovery in a mouse model of spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3287-3301页

作者： Ziwei Fan Mengxian jia jian Zhou Zhoule Zhu Yumin Wu Xiaowu Lin Yiming Qian jiashu Lian Xin Hua jianhong Dong Zheyu Fang Yuqing Liu Sibing Chen Xiumin Xue Juanqing Yue Minyu Zhu Ying Wang Zhihui Huang Honglin Teng Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Neurology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina

The M1/M2 phenotypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord *** of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be *** possesses an anti-inflammatory biological ***,its roles and the underlying molecular mechanisms in spinal cord injury remain *** this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 phenotype in *** promoted M2 polarization through inactivating the cGAS/STING/NF-κB ***,we found that targeting the cGAS/STING/NF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 phenotype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord ***,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal *** together,these results suggest that by targeting the cGAS/STING/NF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 phenotype.

关键词： cGAS/STING functional recovery microglia neuroinflammation neuroprotection nuclear factor-κB polarization spinal cord injury tryptanthrin

H型试剂对于大直径泥水盾构泥水分离处理的影响与应用

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岩土工程学报 2025年第1期47卷 153-163页

作者：张箭任国平尹义豪钟小春张春雷梁禹河海大学岩土力学与堤坝工程教育部重点实验室江苏南京210098 中铁十四局集团大盾构工程有限公司江苏南京211800 河海大学环境学院江苏南京210098 中山大学土木工程学院广东珠海519082

针对广东湛江湾海底隧道施工中出现的盾构废弃泥浆脱水速率慢、泥渣含水率高与废浆排放污染等问题,研发了一种新型H型脱水试剂。通过絮凝脱水试验、微观机理试验以及现场生产试验,揭示了泥浆泥水分离体积比/上清液浊度/粒径分布和Zeta... 详细信息

针对广东湛江湾海底隧道施工中出现的盾构废弃泥浆脱水速率慢、泥渣含水率高与废浆排放污染等问题,研发了一种新型H型脱水试剂。通过絮凝脱水试验、微观机理试验以及现场生产试验,揭示了泥浆泥水分离体积比/上清液浊度/粒径分布和Zeta电位等变化规律,综合评价H型试剂与3种聚丙烯酰胺(PAM)在泥浆脱水效果方面的差异。结果表明:H型试剂与泥浆作用的最优添加量为0.5%;与PAM相比,H型试剂前期沉降速度较慢,但脱水后的泥渣含水率降低了约18.1%,且上清液非常清澈,7.8的pH值符合直接外排条件;H型试剂兼具了较好的桥网作用与电中和作用,使粒径<10μm的细粒更容易聚集成50μm以上的大颗粒,加快了泥浆的絮凝速度。H型试剂营造了渗水性更强的Ca排水通道,降低泥浆的黏滞性,提高泥浆压滤脱水的效率;与原脱水试剂相比,现场使用0.1%的H型试剂,可提高30.5%的脱水泥样含固率,降低20%的工程成本。

关键词：泥水盾构泥水分离絮凝脱水机理研究现场试验

Diversifying Top-κRoutes with Spatial Constraints

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Journal of Computer Science & Technology 2019年第4期34卷 818-838页

作者： Hong-Fei Xu Yu Gu jian-zhong Qi jia-Yuan He Ge Yu College of Computer Science and Engineering Northeastern UniversityShenyang 110169China Department of Computing and Information Systems The University of MelbourneMelbourneVIC 3010Australia

Trip recommendation has become increasingly popular with the rapid growth of check-in data in location-based social *** existing studies focused only on the popularity of *** this paper,we consider further the usability of trip recommendation results through spatial *** thereby formulate a new type of queries named spatial diversified top-κroutes(SDκR)*** type of queries finds k trip routes with the highest popularity,each of which starts at a given starting point,consumes travel time within a given time budget,and passes through points of interest(POIs)of given *** two trip routes returned are diversified to a certain degree defined by the spatial distance between the two *** show that the SDkR problem is *** propose two precise algorithms to solve the *** first algorithm starts with identifying all candidate routes that satisfy the query constraints,and then searches for theκ-route combination with the highest *** second algorithm identifies the candidate routes and builds up the optimalκ-route combination progressively at the same ***,we propose an approximate algorithm to obtain even higher query efficiency with precision *** demonstrate the effectiveness and efficiency of the proposed algorithms on real *** experimental results show that our algorithms find popular routes with diversified POI *** approximate algorithm saves up to 90%of query time compared with the baseline algorithms.

关键词： trip recommendation spatial diversity route search check-in data

The Classification of 2 and 3 Torsion Free Polyhedra

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Acta Mathematica Sinica,English Series 2015年第11期31卷 1659-1682页

作者： jian zhong PAN zhong jian ZHU Academy of Mathematics and Systems Science Chinese Academy of Sciences

We classify the stable homotopy types of （n- 1）-connected, （n ＋ k）-dimensional polyhedra with 2 and 3-torsion free homologies for k 〈 6. The technique used is matrix problem （bimodule categories） which is give... 详细信息

关键词： Homotopy indecomposable matrix problem