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Habitat-specific changes of plant and soil microbial community composition in response to fairy ring fungus Agaricus xanthodermus on the Qinghai-Tibet Plateau

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Soil Ecology Letters 2024年第3期6卷 189-197页

作者： Juan du Cong He Fuxin Wang Ning Ling Shengjing Jiang State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China College of Ecology Lanzhou UniversityLanzhou 730000China

Fairy rings are common in diverse global biomes and often appear as lush vegetation in one to three concentric zones caused by the spread of mycelia in grassland ***,the underlying mechanisms and environmental adaptation of fairy rings remain largely *** this study,two fairy rings(A and B)caused by Agaricus xanthodermus were sampled on the Qinghai-Tibet Plateau during a time when fairy rings are most *** conducting a vegetation survey and high-throughput sequencing,the changes of plants and soil microorganisms to fairy ring fungi were *** above-ground biomass at both fairy rings was greatly increased by fairy ring fungi,but the response of dominant plant species is different at two fairy ring *** addition,bacterial and fungal communities significantly varied within distinct sampling zones across the fairy rings,and showed variable genus-specific responses at two fairy ring *** fairy ring A,soil available N:P ratio was essential in shaping the structure of plant and microbial community,while soil available N concentration was the most important predictor at fairy ring *** together,our results indicated Agaricus xanthodermus fairy rings have variable effects on alpine meadow plants and soil microbes at different *** propose that the impacts of fairy ring fungi on plants and microbes are determined by the level of soil available N concentration and available N:P *** results contribute to a better understanding of the mechanisms through which fairy rings affect the vegetation of alpine meadows.

关键词： Fairy rings alpine meadow soil microbes plant-soil relationships

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EFFECT OF FEED ARRAY CONFIGURATION ON THE FIELD-OF-VIEW OF RADIO TELESCOPE ANTENNA

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Journal of Electronics(China) 2013年第4期30卷 362-367页

作者： Wu Yang du Biao Liu Xiaomeng Jin Chengjin National Key Laboratory of Antennas and Microwave Technology Xidian University Joint Laboratory for Radio Astronomy Technology

Phased Array Feed (PAF) is a small two-dimensional phased array antenna, playing a role as the multi-beam feed for the reflector antenna. The prominent capability of large continuous Field-of-View (FoV) coverage and fast survey speed makes PAF the promising feed for radio telescopes. In this paper, the effect of feed array of PAF on the gain fluctuations over FoV is analyzed on a sim- plified model of the Five-hundred-meter Spherical Aperture radio Telescope (FAST), including illu- mination pattern edge taper, element spacing, element arrangement and element amount. And the differences between rectangular and hexagonal array arrangements are compared. The relationship between the FoV and array configuration are concluded at last.

关键词： Radio telescope Phased Array Feed (PAF) Multi-beam Gain

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Flexible,high-strength titanium nanowire for scaffold biomimetic periodontal membrane

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Biosurface and Biotribology 2021年第1期7卷 23-29页

作者： Jin Li Licheng Hua Weiyuan Wang Chenjie Gu Jianke du Conghu Hu School of mechanical Engineering and Mechanics Key Laboratory of Impact and Safety EngineeringMinistry of EducationNingbo UniversityZhejiang NingboChina Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Nanjing University of Aeronautics and AstronauticsNanjingChina State Key Laboratory of Tribology Tsinghua UniversityBeijingChina Department of stomatology Zhejiang University School of MedicineAffiliated Hangzhou First People's HospitalZhejiang HangzhouChina Department of Microelectronics and Engineering Ningbo UniversityZhejiang NingboChina

A layer of micro-sized periodontal membrane can buffer most chewing forces to protect the interface between the natural tooth root and alveolar *** dental implants usually direct contact onto the alveolar bone without a buffer layer,which increases the risk of surface *** main purpose of this work was the bionic design of a flexible layer of nanowire scaffold on a titanium implant surface according to the function of the periodontal *** of nanowires were woven into a superhydrophilic layer of porous *** evolution of mechanical properties displayed that the biomimetic nanowire scaffold could absorb a maximum of about 1.59 KJ energy per square centi-meter by low-speed *** minimum tensile strength of one nanowire was 2 GPa.A biomimetic flexible periodontal membrane connection functioning between the natural tooth root and alveolar bone has great potential value for developing advanced artificial dental implants for dental restorations.

关键词： titanium strength sized

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Co-splitting of Simple Lie Algebras of Type A, D, E

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Communications in Mathematical Research 2015年第3期31卷 229-241页

作者： Zhao Yu-e du Xian-kun School of Mathematics Qingdao University

In this paper, through a meticulous description of finite root system,a concrete comultiplication with an explicit action on the basis elements of finitedimensional simple Lie algebras of type A; D; E is constructed. Then any finitedimensional simple Lie algebra of type A; D; E is endowed with a new generalizedLie coalgebra splitting. This construction verifies the known existence of a co-splitLie structure on any finite dimensional complex simple Lie algebra.

关键词： Lie coalgebra co-splitting finite-dimensional simple Lie algebra

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Time-lapse geophysical technology-based study on overburden strata changes induced by modern coal mining

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International Journal of Coal Science & Technology 2014年第2期1卷 184-191页

作者： Wenfeng du Suping Peng Guowei Zhu Feng Yang State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyBeijing 100083China

To study the impact of modern coal mining on overlying strata and its water bearing conditions,integrated time-lapse geophysical prospecting integrating 3D seismic,electrical and ground penetrating radar method were *** observing and analyzing the geophysical data variations of all stages of pre-mining,mining and post-mining as well as post-mining deposition stable period,impacts of coal mining on stratigraphic structure and its water bearing were studied and modern coal mining induced stratigraphic change pattern was *** research result shows that the stratigraphic structure and the water bearing of surface layer during modern coal mining have self-healing pattern with mining time;the self-healing capability of near-surface strata is relatively strong while the roof weak;water bearing selfhealing of near-surface strata is relatively high while the roof strata adjacent to mined coal beds *** to integrated time-lapse geophysical prospecting technology has extra time dimension which makes up the deficiency of static analysis of conventional geophysical methods,it can better highlight the dynamic changes of modern coal mining induced overburden strata and its water bearing conditions.

关键词： Time lapse Geophysical prospecting Coal mining Overburden strata Strata changes Modern coalmining

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Probing and imaging phospholipid dynamics in live cells

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Life Metabolism 2024年第4期3卷 13-27页

作者： Zhongsheng Wu Yongtao du Tom Kirchhausen Kangmin He State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Department of Cell Biology Harvard Medical SchoolBostonMA 02115United States Program in Cellular and Molecular Medicine Boston Children’s HospitalBostonMA 02115United States Department of Pediatrics Harvard Medical SchoolBostonMA 02115United States

Distinct phospholipid species display specific distribution patterns across cellular membranes,which are important for their struc-tural and signaling roles and for preserving the integrity and functionality of the plasma membrane and *** advance-ments in lipid biosensor technology and imaging modalities now allow for direct observation of phospholipid distribution,trafficking,and dynamics in living *** innovations have markedly advanced our understanding of phospholipid function and regulation at both cellular and subcellular ***,we summarize the latest developments in phospholipid biosensor design and applica-tion,emphasizing the contribution of cutting-edge imaging techniques to elucidating phospholipid dynamics and distribution with unparalleled spatiotemporal precision.

关键词： phospholipid biosensor lipid-binding domain live-cell imaging

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Understanding the changing mechanism of arc characteristics in ultrasound-magnetic field coaxial hybrid gas tungsten arc welding

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Plasma Science and Technology 2022年第11期24卷 135-144页

作者： Chao CHEN Wenlong LI Chenglei FAN Wenbo du Huijing ZHANG College of Mechanical and Electrical Engineering Northeast Forestry UniversityHarbin 150040People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China National Key Laboratory for Remanufacturing Army Academy of Armored ForcesBeijing 100072People’s Republic of China

Ultrasound-magnetic field coaxial hybrid Gas Tungsten Arc Welding(U-M-GTAW)is proposed as a means to control arc *** arc characteristics and the mechanism to change them,in an ultrasound-magnetic field coaxial hybrid GTAW,were studied by both experimental and theoretical *** results showed that a periodic rotation and compression of the arc shape were obtained in U-M-GTAW and the arc energy was also *** most obvious compression of the arc shape in U-M-GTAW was obtained,compared with GTAW,M-GTAW and *** the same time,a periodic rotation of the arc was observed in *** geometric parameters of the arc shape in U-M-GTAW are reduced more than double compared with traditional *** arc voltage in the hybrid GTAW was increased,especially in the *** electromagnetic force and acoustic radiation force were the main factors for the change of arc characteristics in the U-M-GTAW.

关键词： arc shape GTAW electric signal ultrasound field magnetic field

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Analysis of relative wavelength response characterization and its effects on scanned-WMS gas sensing

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Chinese Physics B 2021年第4期30卷 281-292页

作者： Dao Zheng Zhi-Min Peng Yan-Jun Ding Yan-Jun du State Key Laboratory of Power Systems Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

Our recently proposed three-step method showed the promising potential to improve the accuracy of relative wavelength response(RWR) characterization in the wavelength-modulation spectroscopy(WMS) over the commonly used summation method.A detailed comparison of the three-step method and the summation method,for the wavelength-scanned WMS gas-sensing,was performed with different laser parameters(modulation indexes and scan indexes) and gas properties(pressures and concentrations).Simulation results show that the accuracy of the predicted gas parameters is strongly limited by the RWR characterization with large modulation index and high gas pressure *** fitting residuals of RWR and errors of predicted gas parameters from the recently proposed three-step method are nearly 2 orders of magnitude smaller than those from the summation *** addition,the three-step method is further improved by introducing a coupling term for the 2^(nd) harmonic *** with CO_(2) absorption transition at 6976.2026 cm^(-1) were conducted and validated the simulation *** modified-three-step method presents an improved accuracy in RWR description with at least 5% smaller fitting residual for all conditions compared with the three-step method,although the deviation of the deduced CO_(2) concentrations between these two methods does not exceed 0.2%.

关键词： tunable diode laser absorption spectroscopy relative wavelength response characterization scanned-wavelength-modulation spectroscopy(WMS)

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Blockchain Technology:Theory and Applications Special Issue

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Journal of Systems Science and Information 2021年第3期9卷 203-204页

作者： Donglei du Jian LI Yongwu LI 不详

Blockchain technology originated from virtual currency, which, since 2009, has sprung up all over the world and has gradually entered people’s sight. Blockchain is a new integrated application model of distributed data storage, point-to-point transmission, consensus mechanism, cryptographic algorithm and other computer technologies. In a broad sense, blockchain technology is a new distributed infrastructure and computing method by using blockchain data structure to verify and store data, distributed node consensus algorithm to generate and update data, cryptography to ensure the security of data transmission and access, and intelligent contract composed of automatic script code to program and operate data.

关键词： computer originated store

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Role of immune escape in different digestive tumours

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World Journal of Clinical Cases 2021年第34期9卷 10438-10450页

作者： Xin-Zhu du Bin Wen Lin Liu Ying-Ting Wei Kui Zhao Department of Gastroenterology The Affiliated Hospital of Zunyi Medical UniversityZunyi 563000Guizhou ProvinceChina

A counterbalance between immune cells and tumour cells is key to fighting tumours,and immune escape is an important mechanism for the survival of tumour cells in the *** cells and their cytokines impair the activity of T cells,NK cells,macrophages and other immune cells through various ways,and change the expression of their own surface antigens so as to avoid the clearance of the immune *** in major histocompatibility complex molecules,high expression of programmed death-ligand 1,and the presence of immunosuppressive cells in the tumor microenvironment(TME)are main means by which tumors impair the function of immune *** the development of tumours of the digestive system,different mechanisms acting on tumour cells,the TME,and immune cells lead to immune escape and promote tumour *** this paper,the mechanisms of immune escape in tumour cells of the digestive system are reviewed to provide a theoretical basis for the immunotherapy of gastrointestinal tumours.

关键词： Gastrointestinal tumors Immune escape Immune cells Tumor microenvironment Molecular Mechanism

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