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Spatial patterns of Picea crassifolia driven by environmental heterogeneity and intraspecifi c interactions

Journal of Forestry Research 2023年第4期34卷 949-962页

作者： Changxing Zhao Weijun Zhao Ming Jin Jiqiang Zhou Feng ta lei Wang Wenbo Mou Longju lei Jinrong Liu Junlin Du Xinglin Zhang State Key Laboratory of grassland Agro-Ecosystems College of Pastoral Agriculture Scienceand TechnologyLanzhou UniversityLanzhou 730000People’s Republic of China Academy of Water Resources Conservation Forests in Qilian Mountains of gansu Province Zhangye 734000People’s Republic of China gansu Nonferrous Engineering Survey Design and Research InstituteLanzhou 730000People’s Republic of China State Key Laboratory of grassland Agro-Ecosystems School of Life ScienceLanzhou UniversityLanzhou 730000People’s Republic of China Hexi University Zhangye 734000People’s Republic of China gansu Academy of Eco-Environmental Sciences Lanzhou 730030People’s Republic of China

Research on the spatial patterns of tree populations is critical for understanding the structure and dynamic processes of ***,little is known about how the underlying drivers shape these patterns and species interactions in forest *** this study,spatial point pattern analysis investigated the combined eff ects of intraspecifi c interactions and environmental heterogeneity on the spatial structure and internal maintenance mechanisms of Picea crassifolia in the Qilian Mountain National Nature Reserve,*** were obtained from a 10.2-ha dynamic monitoring plot(DMP)and sixteen 0.04-ha elevation gradient plots(EgPs).Under complete spatial randomness,both mature trees and saplings in the DMP demonstratedlarge-scale aggregation with negative *** EgPs,saplings were clustered in small mesoscales,mature trees were randomly distributed,and the interactions of saplingstrees at all elevations were not *** eliminating the interference of environmental heterogeneity through the inhomogeneous Poisson process,saplings in the DMP and EgPs were clustered in small scales and trees randomly *** c associations were negatively correlated,in the DMP and at low elevations,and no correlations in high elevations of *** the vertical scale,saplings showed a small-scale aggregation pattern with increase in elevation,and the aggregation degree fi rst decreased and then *** interactions of saplings-trees and saplings–saplings showed inhibitions at small scales,with the degree of inhibition gradually *** patterns and associations of adults–adults did not change *** results revealed that intraspecifi c interactions and environmental heterogeneity regulated the spatial patterns of *** at small and large scales,*** heterogeneity might be the most decisive factor aff ecting the spatial patterns of saplings,while trees were more aff ected by intraspecifi c intera

关键词： Picea crassifolia Spatial point pattern analysis Intraspecifi c interactions Environmental heterogeneity

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graphene transfer methods: A review

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Nano Research 2021年第11期14卷 3756-3772页

作者： Sami Ullah Xiaoqin Yang Huy Q.ta Maria Hasan Alicja Bachmatiuk Klaudia Tokarska Barbara Trzebicka lei Fu Mark H.Rummeli College of Energy Soochow Institute for Energy and Materials InnovationsKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou215006China School of Energy and Power Engineering Xi’an Jiaotong UniversityXi’an710049China Institute for Complex Materials IFW Dresden20 Helmholtz StrasseDresden01069Germany NUTECH School of Applied Sciences&Humanities and Computer Engineering DepartmentNational University of TechnologyIslamabad42000Pakistan Centre of Polymer and Carbon Materials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze41-819Poland College of Chemistry and Molecular Science Wuhan UniversityWuhan430072China Institute of Environmental Technology VŠB-Technical University of Ostrava17.listopadu 15Ostrava70833Czech Republic

graphene is a material with unique properties that can be exploited in electronics, catalysis, energy, and bio-related fields. Although, for maximal utilization of this material, high-quality graphene is required at both the growth process and after transfer of the graphene film to the application-compatible substrate. Chemical vapor deposition (CVD) is an important method for growing high-quality graphene on non-technological substrates (as, metal substrates, e.g., copper foil). Thus, there are also considerable efforts toward the efficient and non-damaging transfer of quality of graphene on to technologically relevant materials and systems. In this review article, a range of graphene current transfer techniques are reviewed from the standpoint of their impact on contamination control and structural integrity preservation of the as-produced graphene. In addition, their scalability, cost- and time-effectiveness are discussed. We summarize with a perspective on the transfer challenges, alternative options and future developments toward graphene technology.

关键词： high-quality transfer application-compatible substrate graphene technology

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Diclofenac derivatives with insulin-sensitizing activity

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Chinese Chemical Letters 2011年第4期22卷 409-412页

作者： Jian ta Wang Ying Wang Ji Quan Zhang Xing Cui Yi Zhang gao Feng Zhu lei ta.g School of Pharmacy Guiyang Medical College Guiyang 550004 China

A series of diclofenac derivatives were *** insulin-sensitizing activity of 28 new compounds was evaluated in 3T3- L1 *** compounds 10a and 10f exhibited similar insulin-sensitizing activity with positive drug rosigli... 详细信息

关键词： Diclofenac derivatives Synthesis Insulin-sensitizing activity

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First total synthesis of natural products cajanolactone A and cajanonic acid A

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Chinese Chemical Letters 2014年第5期25卷 749-751页

作者： Wen-Zhang Chen Ling-Ling Fan Hai-tao Xiao Ying Zhou Wan Xiao Jian-ta Wang lei ta.g School of Pharmacy Guiyang Medical University School of Pharmacy Guizhou University

First total synthesis of cajanolactone A and cajanonic acid A has been achieved through steps of anion–anion condensations,cyclization,Williams etherification,selective demethylation,1 3-sigmatropic rearrangement and... 详细信息

关键词： Total synthesis Cajanolactone A Cajanonic acid A

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Awareness and attitude of fecal microbiota transplantation through transendoscopic enteral tubing among inflammatory bowel disease patients

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World Journal of Clinical Cases 2020年第17期8卷 3786-3796页

作者： Min Zhong Yang Sun Hong-gang Wang Cicilia Marcella Bo-ta Cui Ying-lei Miao Fa-Ming Zhang Medical Center for Digestive Diseases The Second Affiliated Hospital of Nanjing Medical UniversityNanjing 210011Jiangsu ProvinceChina Key Lab of Holistic Integrative Enterology Nanjing Medical UniversityNanjing 210011Jiangsu ProvinceChina Department of gastroenterology The First Affiliated Hospital of Kunming Medical UniversityYunnan Institute of Digestive DiseaseKunming 650032YunnanChina Medical Center for Digestive Diseases The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical UniversityHuaian 223300Jiangsu ProvinceChina

BACKgROUND Transendoscopic enteral tubing(TET)has been used in China as a novel delivery route for fecal microbiota transplantation(FMT)into the whole colon with a high degree of patient satisfaction among *** To explore the recognition and attitudes of FMT through TET in patients with inflammatory bowel disease(IBD).METHODS An anonymous questionnaire,evaluating their awareness and attitudes toward FMT and TET was distributed among IBD patients in two provinces of Eastern and Southwestern *** formats included single-choice questions,multiple-choice questions and sorting *** who had not undergone FMT were mainly investigated for their cognition and acceptance of FMT and *** who had experience of FMT,the way they underwent FMT and acceptance of TET were the main *** all the patients were asked whether they would recommend FMT and *** study also analyzed the preference of FMT delivery in IBD patients and the patient-related factors associated with *** A total of 620 eligible questionnaires were included in the *** survey showed that 44.6%(228/511)of patients did not know that FMT is a therapeutic option in IBD,and 80.6%(412/511)of them did not know the concept of *** than half(63.2%,323/511)of the participants stated that they would agree to undergo FMT through *** the patients who underwent FMT via TET[62.4%(68/109)],the majority[95.6%(65/68)]of them were satisfied with *** who had undergone FMT and TET were more likely to recommend FMT than patients who had not(94.5%vs 86.3%,P=0.018 and 98.5%vs 87.8%,P=0.017).Patients’choice for the delivery way of FMT would be affected by the type of disease and whether the patient had the experience of *** compared to patients without experience of FMT,Crohn’s disease and ulcerative colitis patients who had experience of FMT preferred mid-gut TET(Pgh T

关键词： Recognition Fecal microbiota transplant Washed microbiota transplantation Transendoscopic enteral tubing Attitude

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Prevalence and clinical application of TMPRSS2-ERg fusion in Asian prostate cancer patients: a large-sample study in Chinese people and a systematic review

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Asian Journal of Andrology 2020年第2期22卷 200-207页

作者： De-Pei Kong Rui Chen Chun-lei Zhang Wei Zhang guang-An Xiao Fu-Bo Wang Na ta Xu gao Ying-Hao Sun Department of Urology Shanghai Changhai HospitalSecond Military Medical UniversityShanghai 200433China Department of Pathology Shanghai Changhai HospitalSecond Military Medical UniversityShanghai 200433China

Fusion between the transmembrane protease serine 2 and v-ets erythroblastosis virus E26 oncogene homolog(TMPRSS2-ERg fusion)is a common genetic alteration in prostate cancer among Western populations and has been suggested as playing a role in tumorigenesis and progression of prostate ***,the prevalence of TMPRSS2-ERg fusion differs among different ethnic groups,and contradictory results have been reported in Asian *** aim to evaluate the prevalence and significance of TMPRSS2-ERg fusion as a molecular subtyping and prognosis indicator of prostate cancer in *** identified the fusion status in 669 samples from prostate biopsy and radical prostatectomy by fluorescence in situ hybridization and/or immunohistochemistry in *** examined the association of TMPRSS2-ERg fusion with clinicopathological characteristics and biochemical recurrence by Chi-square test and Kaplan–Meier ***,a systematic review was performed to investigate the positive rate of the fusion in Asian prostate cancer ***’s test was employed to compare the positive rates of TMPRSS2-ERg fusion detected using different *** positive rates of TMPRSS2-ERg fusion were 16%in our samples and 27%in Asian *** our samples,9.4%and 19.3%of cases were recognized as fusion positive by fluorescence in situ hybridization and immunohistochemistry,*** significant association between the fusion and clinical parameters was ***2-ERg fusion is not a frequent genomic alteration among Asian prostate cancer patients and has limited significance in clinical practices in *** ethnic difference,detection methods potentially influence the results showing a positive rate of TMPRSS2-ERg fusion.

关键词： Asian Chinese prostate cancer systematic review TMPRSS2-ERg

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Direct synthesis of large-area Al-doped graphene by chemical vapor deposition:Advancing the substitutionally doped graphene family

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Nano Research 2022年第2期15卷 1310-1318页

作者： Sami Ullah Yu Liu Maria Hasan Wenwen Zeng Qitao Shi Xiaoqin Yang lei Fu Huy Q.ta Xueyu Lian Jingyu Sun Ruizhi Yang Lijun Liu Mark H.Rummeli College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006China NUTECH School of Applied Sciences&Humanities and Computer Engineering Department National University of TechnologyIslamabad 42000Pakistan Centre of Polymer and Carbon Materials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze 41-819Poland School of Energy and Power Engineering Xian Jiaotong UniversityXian 710049China College of Chemistry and Molecular Science Wuhan UniversityWuhan 430072China Institute for Complex Materials IFW Dresden 20 Helmholtz Strasse Dresden 01069Germany Institute of Environmental Technology VSB-Technical University of Ostrava17.listopadu 15Ostrava 70833Czech Republic

graphene doping continues to gather momentum because it enables graphene properties to be tuned,thereby affording new properties to,improve the performance of,and expand the application potential of *** can be chemically doped using various methods such as surface functionalization,hybrid composites(e.g.,nanoparticle decoration),and substitution doping,wherein C atoms are replaced by foreign ones in the graphene *** works have predicted that graphene could be substitutionally doped by aluminum(Al)atoms,which could hold promise for exciting applications,including hydrogen storage and evolution,and *** theoretical predictions suggest that Al substitutionally doped graphene(AIg)could serve as a material for gas sensors and the catalytic decomposition of undesirable ***,fabricating Al substitutionally doped graphene has proven challenging until ***,we demonstrate how controlled-flow chemical vapor deposition(CVD)implementing a simple solid precursor can yield high-quality and large-area monolayer AIg,and this synthesis is unequivocally confirmed using various characterization methods including local electron energy-loss spectroscopy(EELS).Detailed high-resolution transmission electron microscopy(HRTEM)shows numerous bonding configurations between the Al atoms and the graphene lattice,some of which are not theoretically ***,the produced AIg shows a CO_(2) capturability superior to those of other substitutionally doped graphenes.

关键词： aluminum-doped graphene single-solid precursor chemical vapor deposition carbon dioxide capture energy storage catalytic applications

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Microstructure of a Ti–50wt% ta alloy produced via laser powder bed fusion

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Acta Metallurgica Sinica(English Letters) 2020年第7期33卷 981-990页

作者： lei-lei Xing Cong-Cong Zhao Hao Chen Zhi-Jian Shen Wei Liu School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Jihua Laboratory 13th FloorChengye buildingNanping West Road No.13GuichengNanhai districtFoshan cityGuangdong province 528000China Arrhenius Laboratory Department of Materials and Environmental ChemistryStockholm University10691StockholmSweden

Ti-ta alloys have been widely studied for biomedical applications due to their high biocompatibility and corrosion *** this work,nearly fully dense and in situ alloyed Ti-50 wt% ta samples were fabricated by the laser powder bed fusion(LPBF) of mechanically mixed *** increased exposure time,and thereby increased laser energy density,insoluble ta particles were almost dissolved,and a Ti-50 wt% ta alloy was *** and dendritic structures were formed due to constitutional undercooling,which was caused by the high cooling rate of LPBF *** retained βphases and α " phases were observed in the LPBFed Ti-50 wt% ta *** α" phase was found at the boundary of the cellular structures,where the tantalum content was not high enough to suppress the bcc lattice transition completely but could suppress the β phase→α’ phase transition.

关键词： alloy Microstructure corrosion

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geochemistry and Petrogenesis of the ca. 2.5ga High-K granitoids in the Southern North China Craton

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Journal of Earth Science 2019年第3期30卷 647-665页

作者： lei Li Wenjian Zhai State Key Laboratory of geological Processes and Mineral Resources School of Earth Sciences China University of Geosciences Wuhan 430074 China No.1 geology and Mineral Resources Survey Institute of Henan geology and Mineral Exploration and Development Bureau Luoyang 471023 China Henan Institute of geological Survey Zhengzhou 450001 China

Archean high-K granitoids, generally formed after tonalite-trondhjemite-granodiorite (TTgs), are important for understanding crustal reworking of ancient cratons. The Linshan Archean high-K granitoids from the southern Trans-North China Orogen (TNCO) provide a window into the conti-nental crustal evolution of the North China Craton (NCC). They mainly consist of monzogranite and granodiorite which were formed during 2 542-2 503 Ma. The high-K granitoids have high SiO2 (65.86wt.%-78.08wt.%), K2O (3.29 wt.%-7.62wt.%) and low P2O5 (0.01 wt.%-0.27wt.%). They display right inclined REE patterns with negative Eu anomalies (Eu/Eu*=0.20-0.81).Their spider diagram is characterized by enrichment of Rb, K, Th, U and depletion of Nb, ta, Zr, Ti. The rocks have positive and variable zircon εHf(t)(+2.5 to +6.6) and whole-rock εHf(t)(+0.7 to +4.5) with two-stage model ages (TDM2^Hf=2.87-2.64 ga;TDM2^Nd=2.77-2.50 ga) similar to those of the Archean TTg-ty pe rocks, amphibolites and diorites in the area. These evidences suggest that the high-K granitoids were produced by partial melting of juvenile crustal rocks. The Linshan high-K granitoids show relatively high whole-rock zircon saturation tempera-tures (694-889℃) and low Sr/Y ratios (0.27-21.1), indicating low pressure partial melting. Combined with other geological evidences, the Linshan high-K granitoids are suggested to have been produced by partial melting of the continental crust in a post-collision extensional environment after an arc-continent collision. Thus, the NCC did not amalgamate together until ca. 2.5 ga. Compiled zircon U-Pb ages and Hf isotopes reveal that the ca. 2.5 ga magmatism represents reworking of the continental crust.

关键词： granitoids petrogenesis Neoarchean North China Craton

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Tip-induced or enhanced superconductivity： a way to detect topological superconductivity

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Science Bulletin 2018年第17期63卷 1141-1158页

作者： He Wang lei Ma Jian wang Tianjin International Center for Nano Particles and Nano Systems Tianjin University. Tianjin 300072 China International Center for Quantum Materials School of Physics Peking University Beijing 100871 China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China State Key Laboratory of Low-Dimensional Quantum Pllysics Department of Physics Tsinghua University Beijing 100084 China

Topological materials, hosting topological nontrivial electronic band, have attracted widespread attentions. As an application of topology in physics, the discovery and study of topological materials not only enrich the existing theoretical framework of physics, but also provide fertile ground for investigations on low energy excitations, such as Weyl fermions and Majorana fermions, which have not been observed yet as fundamental particles. These quasiparticles with exotic physical properties make topological materials the cutting edge of scientific research and a new favorite of high tech. As a typical example, Majorana fermions, predicted to exist in the edge state of topological superconductors, are proposed to implement topological error-tolerant quantum computers. Thus, the detection of topological superconductivity has become a frontier in condensed matter physics and materials science. Here, we review a way to detect topological superconductivity triggered by the hard point contact: tip-induced superconductivity(TISC) and tip-enhanced superconductivity(TESC). The TISC refers to the superconductivity induced by a non-superconducting tip at the point contact on non-superconducting materials. We take the elaboration of the chief experimental achievement of TISC in topological Dirac semimetal Cd_3As_2 and Weyl semimetal ta As as key components of this article for detecting topological superconductivity. Moreover, we also briefly introduce the main results of another exotic effect, TESC, in superconducting Au_2Pb and Sr_2RuO_4 single crystals, which are respectively proposed as the candidates of helical topological superconductor and chiral topological superconductor. Related results and the potential mechanism are conducive to improving the comprehension of how to induce and enhance the topological superconductivity.

关键词： Tip-induced superconductivity Tip-enhanced superconductivity Topological superconductivity Point contact spectroscopy Topological materials

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