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Straw return influences the structure and functioning of arbuscular mycorrhizal fungal community in a rice-wheat rotation system

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Pedosphere 2024年第2期34卷 339-350页

作者： Silong ZHAI Junjie XIE Zongyi TONG bing yang Weiping CHEN Roger TKOIDE Yali MENG Xiaomin HUANG Atta Mohi Ud DIN Changqing CHEN Haishui yang College of Agriculture Nanjing Agricultural UniversityNanjing 210095China Department of Biology Brigham Young UniversityProvo UT 84602USA Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology Agricultural College of Yangzhou UniversityYangzhou 225009China National Research Center of Intercropping The Islamia University of BahawalpurBahawalpur 63100Pakistan Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing Agricultural UniversityNanjing 210095China

Straw return is a sustainable soil fertility-building practice,which can affect soil microbial ***,how straw return affects arbuscular mycorrhizal fungi(AMF)is not well ***,we studied the impacts of different straw management treatments over eight years on the structure and functioning of AMF communities in a rice-wheat rotation *** straw management treatments included no tillage with no straw(NTNS),rotary tillage straw return(RTSR),and ditch-buried straw return(DBSR).The community structure of AMF was characterized using high-throughput sequencing,and the mycorrhizal functioning was quantified using an in situ mycorrhizal-suppression *** straw management treatments formed unique AMF community structure,which was closely related to changes in soil total organic carbon,available phosphorus,total nitrogen,ammonium,and *** compared with NTNS,RTSR significantly increased Shannon diversity in 0–10 cm soil layer,while DBSR increased it in 10–20 cm soil layer;DBSR significantly increased hyphal length density in the whole ploughing layer(0–20 cm),but RTSR only increased it in the subsurface soil layer(10–20 cm).The mycorrhizal responses of shoot biomass and nutrient(N and P)uptake were positive under both straw return treatments(RTSR and DBSR),but negative under *** community composition of AMF was significantly correlated to hyphal length density,and the latter was further a positive predictor for the mycorrhizal responses of plant growth and nutrient *** findings suggest that straw return can affect AMF community structure and functioning,and farmers should manage mycorrhizas to strengthen their beneficial effects on crop production.

关键词： community structure hyphal length density shoot biomass shoot N uptake shoot P uptake soil physicochemical properties straw management tillage

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Proppant transport in rough fracture networks using supercritical CO_(2)

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Petroleum Science 2024年第3期21卷 1852-1864页

作者： Yong Zheng Meng-Meng Zhou Ergun Kuru Bin Wang Jun Ni bing yang Ke Hu Hai Huang Hai-Zhu Wang School of Petroleum Engineering Xi'an Shiyou UniversityXian710065ShaanxiChina Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery Xi'an710075ShaanxiChina State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing2249China School of Mining and Petroleum Engineering University of AlbertaEdmontonTG2W2AlbertaCanad Shaanxi Yanchang Petroleum(Group)Co. Ltd.Xi'an710075ShaanxiChina

Proppant transport within fractures is one of the most critical tasks in oil,gas and geothermal reservoir stimulation,as it largely determines the ultimate performance of the operating *** transport in rough fracture networks is still a relatively new area of research and the associated transport mechanisms are still *** this study,representative parameters of rough fracture surfaces formed by supercritical CO_(2) fracturing were used to generate a rough fracture network model based on a spectral synthesis *** fluid dynamics(CFD)coupled with the discrete element method(DEM)was used to study proppant transport in this rough fracture *** reveal the turning transport mechanism of proppants into branching fractures at the intersections of rough fracture networks,a comparison was made with the behavior within smooth fracture networks,and the effect of key pumping parameters on the proppant placement in a secondary fracture was *** results show that the transport behavior of proppant in rough fracture networks is very different from that of the one in the smooth fracture *** turning transport mechanisms of proppant into secondary fractures in rough fracture networks are gravity-driven sliding,high velocity fluid suspension,and fracture structure *** the same injection conditions,supercritical CO_(2)with high flow Reynolds number still has a weaker ability to transport proppant into secondary fractures than *** of the supercritical CO_(2)needs to be increased beyond a certain value to have a significant effect on proppant carrying,and under the temperature and pressure conditions of this paper,it needs to be increased more than 20 times(about 0.94 m Pa s).Increasing the injection velocity and decreasing the proppant concentration facilitates the entry of proppant into the branching fractures,which in turn results in a larger stimulated reservoir *** results help to understand the pro

关键词： Reservoir stimulation CCUS Rough fracture network Supercritical CO_(2) Proppanttransport

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Thermal and mechanical characterization of under-2-μm-thick AlCrNbSiTi high-entropy thin film

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Energy Storage and Saving 2024年第1期3卷 52-59页

作者： Yibo Wang Xiaona Huang Yan Liu Xiangyu Zhang bing yang Yanan Yue School of Power and Mechanical Engineering Wuhan UniversityWuhan430072China

High-entropy alloys(HEAs)exhibit extraordinary physical properties such as superior strength-to-weight ratios and enhanced corrosion and oxidation resistance,making them potentially useful in energy storage and gener-ation ***,thermal and mechanical properties of HEAs with various compositions vary ***,these properties have rarely been investigated simultaneously owing to material or instru-mentation ***,we synthesize an HEA(AlCrNbSiTi)coating with a thickness of less than 2μ*** customize a frequency-domain photothermal testing system to characterize the thermal and mechanical proper-ties of the proposed coating with high *** to the large mixing enthalpy of the Al-Ti,Nb-Si,and Ti-Si pairs in the coating,its hardness and elastic modulus are 15.2 and 254.7 GPa,respectively,which are higher than those of previously reported *** thermal conductivity of the AlCrNbSiTi coating is characterized to be 2.90 W·m^(−1)·K^(−1),within the expected range and well explained by the free-electron consistency diversity and phonon scattering from the amorphous ***,the coating exhibits adequate wear performance,with a wear rate of 5.4×10^(−8) mm^(3)·N^(−1)·m^(−1).This relatively low thermal conductivity,combined with extraordi-nary mechanical properties,makes the proposed material an excellent candidate as a protective coating material for nuclear reactor components which require high strength,irradiation resistance,and thermal protection.

关键词： High-entropy alloys Thin coating Thermal conductivity Mechanical properties Noncontact photothermal technique

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Self-assembled high-entropy nitride multilayer coating

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Rare Metals 2024年第6期43卷 2876-2883页

作者： Xiang-Yu Zhang Yan Liu Vasiliy Pelenovich Xiao-Mei Zeng Jie Liu Qiang Wan Alexander Pogrebnjak Long-Jian Xue Zhi-Wen Chen Yan Lei bing yang School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Hubei JiuFengShan Future Science and Technology Laboratory Wuhan 420000China Institute of Technological Sciences of Wuhan University Wuhan 430072China Hubei Key Laboratory of Electronic Manufacturing and Packaging Integration Wuhan UniversityWuhan 430072China College of Engineering Huazhong Agricultural UniversityWuhan 430070China Sumy State University Sumy 40007Ukraine Institute of Materials Science Slovak University of Technology in BratislavaJána Bottu2591724 TrnavaSlovak Republic Shenzhen Research Institute of Wuhan University Shenzhen 518057China

The development of advanced materials and construction of multilayer structure contribute to enhancing the performance of protective coatings,further improving the industrial productivity and conserving *** this paper,the self-assembled high-entropy nitride(HEN)AlCrNbSiTiN multilayer coating was designed by harnessing the plasma distribution characteristics and depos-ited by arc ion plating using single target.

关键词： coating energy multilayer

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Dangling Ligand Enables an Iron Hexa-Coordinated Molecular Catalyst for Water Oxidation by Photocatalysis

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CCS Chemistry 2024年第3期6卷 623-630页

作者： bing yang Qi Liu Xiang-Zhu Wei Tao Lei Qing-Qing yang Xu-Zhe Wang Jing-Xin Jian Xin Jiang Chen-Ho Tung Li-Zhu Wu Key Laboratory of Photochemical Conversion and Optoelectronic Materials New Cornerstone Science LaboratoryTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 School of Future Technology University of Chinese Academy of SciencesBeijing 100049

Photocatalytic water oxidation reaction by transition metal complexes remains a challenge because of their poor stability under irradiation,especially for earth-abundant metal *** this regard,ironbased water oxidation catalysts are prone to hydrolysis and/or dissociate the ligands to form nanoparticles under a real catalytic ***,we describe a unique hexa-coordinated catalyst 1[Fe^(II)(Py_(3)tacn)Cl_(2)]and its reference 2[Fe^(II)(PhPy_(2)tacn)Cl_(2)]with a dangling pyridyl ligand and a phenyl group,*** anticipated that the dynamically open and close coordination behaviors of the pyridyl ligand enabled balance of the reactivity and stability of catalyst *** our delight,the“open form”of catalyst 1 provided a free coordination site,and the“close form”guaranteed its molecular integrity,resulting in a water oxidation reaction with high efficiency and *** turnover number and turnover frequency values of 2332 and 60 s^(−1)are the highest known to date among iron-based homogeneous water oxidation systems under visible light irradiation.

关键词： water oxidation photocatalysis homogeneous catalysis iron complexes dangling ligand intermediates characterization

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To explore the pathogenesis of anterior resection syndrome by magnetic resonance imaging rectal defecography

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World Journal of Gastrointestinal Surgery 2024年第2期16卷 529-538页

作者： Ling-Hou Meng Xian-Wei Mo bing-Yu yang Hai-Quan Qin Qing-Zhou Song Xin-Xin He Qiang Li Zheng Wang Chang-Lin Mo Guo-Hai yang Department of Gastrointestinal Surgery Guangxi Clinical Research Center for Colorectal CancerGuangxi Medical University Cancer HospitalNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Colorectal and Anal Surgery Guangxi Medical University Cancer HospitalNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Radiology Guangxi Medical University Cancer HospitalNanning 530021Guangxi Zhuang Autonomous RegionChina First Department of Chemotherapy Guangxi Medical University Cancer HospitalNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Over 90%of rectal cancer patients develop low anterior resection syndrome(LARS)after sphincter-preserving *** current globally recognized evaluation method has many drawbacks and its subjectivity is too strong,which hinders the research and treatment of *** To evaluate the anorectal function after colorectal cancer surgery by quantifying the index of magnetic resonance imaging(MRI)defecography,and pathogenesis of *** We evaluated 34 patients using the standard LARS score,and a new LARS evaluation index was established using the dynamic images of MRI defecography to verify the LARS *** In the LARS score model,there were 10(29.41%)mild and 24(70.58%)severe cases of *** comparison of defecation rate between the two groups was 29.36±14.17%versus 46.83±18.62%(P=0.004);and MRI-rectal compliance(MRI-RC)score was 3.63±1.96 versus 7.0±3.21(P=0.001).Severe and mild LARS had significant differences using the two evaluation *** was a significant negative correlation between LARS and MRI-RC score(P<0.001),and they had a negative correlation with defecation rate(P=0.028).CONCLUSION MRI defecography and standard LARS score can both be used as an evaluation index to study the pathogenesis of LARS.

关键词： Anterior resection syndrome Colorectal cancer Diagnostic evaluation system Magnetic resonance imaging defecography Pathogenesis

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“阿者科计划”旅游减贫方法的经验与反思

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旅游学刊 2024年第8期39卷 13-15页

作者：杨兵中山大学旅游学院广东珠海519082

当我们开始探讨旅游作为一种减贫方法时,背后隐藏一种工具理性思维,随即引导出一个关键问题:旅游作为一种方法,如何能够有效促进减贫事业?要回应这个问题,首先需要回应旅游减贫这种方法如何不同于其他减贫方法,如何在实践策略层面提供... 详细信息

当我们开始探讨旅游作为一种减贫方法时,背后隐藏一种工具理性思维,随即引导出一个关键问题:旅游作为一种方法,如何能够有效促进减贫事业?要回应这个问题,首先需要回应旅游减贫这种方法如何不同于其他减贫方法,如何在实践策略层面提供一些案例经验参考。基于参与云南“阿者科计划”5年驻村建减贫项目经历,笔者溯源了该村的旅游减贫方法施行历程,有以下感悟。

关键词：旅游减贫有效促进经验与反思驻村减贫方法减贫事业策略层面工具理性

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Atomically Precise Design of PtSn Catalyst for the Understanding of the Role of Sn in Propane Dehydrogenation

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Precision Chemistry 2024年第6期2卷 245-255页

作者： Hui Ye Lina Cao Minghui Gu Han Nie Qingqing Gu bing yang Yunxing Bai Qinxue Nie Weixin Huang Junling Lu Institute of Advanced Technology Key Laboratory of Precision and Intelligent ChemistryDepartment of Chemical PhysicsHefei National Research Center for Physical Sciences at the MicroscaleKey Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesUniversity of Science and Technology of ChinaHefei 230026P.R.China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsThe Chinese Academy of SciencesDalian 116023P.R.China

Propane dehydrogenation(PDH),an atom-economic reaction to produce high-value-added propylene and hydrogen with high efficiency,has recently attracted extensive *** severe deactivation of Pt-based catalysts through sintering and coking remains a major challenge in this high-temperature *** introduction of Sn as a promoter has been widely applied to improve the stability and selectivity of the ***,the selectivity and stability of PtSn catalysts have been found to vary considerably with synthesis methods,and the role of Sn is still far from fully *** gain in-depth insights into this issue,we synthesized a series of PtSn/SiO_(2)and SnPt/SiO_(2)catalysts by varying the deposition sequence and Pt:Sn ratios using atomic layer deposition with precise *** found that PtSn/SiO_(2)catalysts fabricated by the deposition of SnO_(x)first and then Pt,exhibited much better propylene selectivity and stability than the SnPt/SiO_(2)catalysts synthesized the other way *** demonstrate that the presence of Sn species at the Pt-SiO_(2)interface is of essential importance for not only the stabilization of PtSn clusters against sintering under reaction conditions but also the promotion of charge transfers to Pt for high *** the above,the precise regulation of the Sn content is also pivotal for high performance,and the excess amount of Sn might generate additional acidic sites,which could decrease the propylene selectivity and lead to heavy coke *** findings provide deep insight into the design of highly selective and stable PDH catalysts.

关键词： Propane dehydrogenation PtSn catalysts sintering coke formation acidity

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Seven-years post allogeneic hematopoietic stem cell transplantation pure red cell aplastic anemia cured with daratumumab:A case report and review of literature

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World Journal of Clinical Cases 2024年第24期12卷 5604-5612页

作者： Bo Deng Rui Gao bing yang Wen-bing Lei Ming-Fang Xue Ji-Shi Wang Peng Zhao Department of Haematology Guizhou HospitalThe First Affiliated Hospital of Sun Yat-sen UniversityGuiyang 550001Guizhou ProvinceChina Department of Hematology The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550001Guizhou ProvinceChina School of Clinical Medicine Guizhou Medical UniversityGuiyang 550001Guizhou ProvinceChina Department of Hematology The Affiliated Hospital of Guizhou Medical UniversityHematological Institute of Guizhou ProvinceGuiyang 550001Guizhou ProvinceChina

BACKGROUND Allogeneic hematopoietic stem cell transplantation(Allo-HSCT)is currently the only viable method of curing patients with acute myeloid *** 30%to 50%of patients,donors and recipients have some level of ABO blood group *** blood group incompatibility can cause antibodies against the donor's red blood cells to persist in the recipient's body,resulting in a delay of several months in the recovery of red blood cells.A number of different treatments have been reported for post-transplant pure red cell aplastic anaemia(PRCA),such as plasmapheresis,donor lymphocyte infusions,anti-thymocyte globulin,rituximab and *** SUMMARY A 41-year-old female diagnosed with acute myeloid leukaemia underwent peripheral blood allogeneic haematopoietic stem cell transplantation in November 2013 from an HLA matched unrelated *** donor was AB-positive and the recipient was *** patient was diagnosed with PRCA three months after receiving the donor stem cell *** failing multiple lines of therapy,the patient applied for *** receiving three doses of daratumumab,the patient developed a reticulocyte response and no longer required CONCLUSION The use of daratumumab anti-CD38 for the remove of plasma cells is safe and effective and may be tried for refractory patients with PRCA after undergoing allo-HSCT for ABO incompatibility.

关键词： Transplantation PRCA Daratumumab Leukemia blood-group Case report

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基于FGF23/Klotho稳态观察口服糖皮质激素致生长障碍的临床研究

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中国当代儿科杂志 2024年第3期26卷 269-274页

作者：唐帅杨扬李湘别炳阳张建河南中医药大学儿科医学院河南郑州450000 河南中医药大学第一附属医院儿科医院河南郑州450000

目的观察长期口服糖皮质激素(glucocorticosteroid,GC)抑制原发性肾病综合征(primarynephrotic syndrome,PNS)儿童生长与FGF23/Klotho比值变化的相关性。方法前瞻性选取已停用GC 3个月以上,于2022年6—12月至河南中医药大学第一附属医... 详细信息

目的观察长期口服糖皮质激素(glucocorticosteroid,GC)抑制原发性肾病综合征(primarynephrotic syndrome,PNS)儿童生长与FGF23/Klotho比值变化的相关性。方法前瞻性选取已停用GC 3个月以上,于2022年6—12月至河南中医药大学第一附属医院儿科医院复查的56例激素敏感型PNS儿童为研究对象。入院监测尿蛋白定性及定量后,尿蛋白复发者加用GC治疗,为GC组(n=29);尿蛋白未复发者不加用GC治疗,为无GC组(n=27)。同期选取29例3岁至青春期前年龄的健康体检儿童作为对照组。比较各组身高、骨龄、增长速度及FGF23/Klotho比值等指标,并进行相关性分析。结果GC组加用GC 1个月后的FGF23/Klotho比值高于无GC组(P<0.05),半年内的身高增长速度、骨龄增长速度均低于无GC组(P<0.05)。相关性分析显示PNS儿童治疗1个月后的FGF23/Klotho比值与治疗半年内的身高增长速度、骨龄增长速度均呈显著负相关(分别r=-0.356、-0.436,P<0.05)。结论FGF23/Klotho稳态失衡是长期口服GC导致生长障碍的机制之一。

关键词：原发性肾病综合征糖皮质激素生长障碍 FGF23 Klotho 儿童

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