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World Journal of Radiology 2024年第9期16卷 439-445页

作者： Lei Wang Ning Zhang dong-cheng liang Hao-Ling Zhang Le-Qing Lin Department of Intensive Care Medicine Hangzhou Normal University Affiliated HospitalHangzhou 310015Zhejiang ProvinceChina Department of Biomedical Science Advanced Medical and Dental InstituteUniversity Sains MalaysiaPenang 13200Malaysia

BACKGROUND Factor XIII(FXIII)deficiency is a rare yet profound *** plays a pivotal role in hemostasis,and deficiencies in this factor can precipitate unchecked or spontaneous *** assays for detecting FXIII inhibitors are indispensable for diagnosing acquired FXIII deficiency;however,the availability of suitable testing facilities is limited,resulting in prolonged turnaround times for these *** SUMMARY In this case study,a 53-year-old male devoid of significant medical history presented with recurrent intracranial hemorrhages and a hematoma in the right *** genetic analysis revealed a homozygous mutation in the ACE gene,confirming the diagnosis of acquired FXIII *** This case underscores the significance of considering acquired deficiencies in clotting factors when evaluating patients with unexplained bleeding episodes.

关键词： Factor XIII deficiency Hematoma Spontaneous Bleeding disorder Intracranial hemorrhages Case report

Positive Interactions： Crucial Organizers in a Plant Community

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Journal of Integrative Plant Biology 2006年第2期48卷 128-136页

作者： dong-liang cheng Gen-Xuan Wang Bao-Ming Chen Xiao-Ping Wei Key Laboratory of Arid and Grassland Agroecology at Lanzhou University Ministry of Education Lanzhou 730000 China College of Life Sciences Zhejiang University Hangzhou 310027 China

For more than a century, ecologists have concentrated on competition as a crucial process for community organization. However, more recent experimental investigations have uncovered the striking Influence of positive Interactions on the organization of plant communities. Complex combinations of competition and positive interactions operating simultaneously among plant species seem to be widespread In nature. In the present paper, we reviewed the mechanism and ecological importance of positive Interactions In plant communities, emphasizing the certainties and uncertainties that have made It an attractive area of research. Positive Interactions, or facilitation, occur when one species enhances the survival, growth, or richness of another. The Importance of facilitation in plant organization increases with ablotlc stress and the relative Importance of competition decreases. Only by combining plant interactions and the many fields of biology can we fully understand how and when the positive Interactions occur.

关键词： competition environmental gradient facilitation plant community plant-plant communications positive interactions.

Relationships among the Stem,Aboveground and Total Biomass across Chinese Forests

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Journal of Integrative Plant Biology 2007年第11期49卷 1573-1579页

作者： dong-liang cheng Gen-Xuan Wang Tao Li Qing-Long Tang Chun-Mei Gong College of Geographical Science Fujian Normal University Fuzhou 350007 China College of Life Sciences Zhejiang University Hangzhou 310027 China Kay Laboratory of Arid and Grassland Agroecology at Lanzhou University Ministry of Education Lanzhou 730000 China

Forest biomass plays a key role in the global carbon cycle. In the present study, a general allometric model was derived to predict the relationships among the stem biomass Ms, aboveground biomass MA and total biomass MT, based on previously developed scaling relationships for leaf, stem and root standing biomass. The model predicted complex scaling exponents for MT and/or MA with respect to Ms. Because annual biomass accumulation in the stem, root and branch far exceeded the annual increase in standing leaf biomass, we can predict that MT ∝MA ∝ Ms as a simple result of the model. Although slight variations existed in different phyletic affiliations （i.e. conifers versus angiosperms）, empirical results using Model Type Ⅱ （reduced major axis） regression supported the model＇s predictions. The predictive formulas among stem, aboveground and total biomass were obtained using Model Type I （ordinary least squares） regression to estimate forest biomass. Given the low mean percentage prediction errors for aboveground （and total biomass） based on the stem biomass, the results provided a reasonable method to estimate the biomass of forests at the individual level, which was insensitive to the variation in local environmental conditions （e.g. precipitation, temperature, etc.）.

关键词： aboveground biomass allometry forest isometric scaling plant biomass allocation patterns stem biomass total biomass.

Two new triterpenoid saponins from Rhaponticum uniflorum

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Chinese Chemical Letters 2009年第6期20卷 690-693页

作者： Yong Hong Zhang Ying Wu Li Yang Zhong Li Liu dong liang cheng Department of Pharmacy Fujian Medical University Fuzhou 350004 China National Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 China

Two new triterpenoid saponins were isolated from the roots ofRhaponticum uniflorum. Their structures were elucidated as 3-O- [β-D-glucopyranosyl]-ilexolic acid-28-O-[β-D-glucopyranosyl] ester 1 and 3-O-[β-D-glucopyranosyl]-urs-12, 19 （29）-dien-oic acid-28-O-[β-b-glucopyranosyl] ester 2 mainly by 1D, 2D NMR techniques and chemical methods.

关键词： Rhaponticum uniflorum Compositae Triterpenoid saponin

An unprecedented synthesis of axially chiral biaryls by rearrangement and aromatization of carbocations with central-to-axial conversion of chirality

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Science China Chemistry 2024年第9期67卷 2998-3003页

作者： Qi Liu Xue-dong Li liang cheng Li Liu Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The central-to-axial chirality conversion represents a fascinating class of chemical processes consisting of the destruction of stereogenic centers and the simultaneous installation of axial chiral elements,which provides efficient methods for the preparation of axially chiral ***,developing catalytic asymmetric approaches for constructing these central chirality precursors and the efficient central-to-axial chirality conversion remains a challenge due to the requirement of aromatization or elimination *** this work,we have developed an unprecedented enantioselective intramolecular FriedelCrafts alkylation with unactivated-ketone carbonyls from which a chiral tertiary alcohol was generated with high efficiency and excellent *** addition,the central-to-axial chirality conversion strategy has been successfully applied to the synthesis of enantioenriched biaryls via a less-explored carbocation-initiated rearrangement and aromatization under the promotion of Lewis *** methodology provided a straightforward and sustainable access to a broad range of biaryl-2-carboxylic acid and in excellent yields(up to 92%)and excellent central-to-axial chirality conversion(up to 99%conversion percentage).This work could be a great model for developing new methods for synthesizing axially chiral biaryls and a general protocol for the rearrangement and aromatization of carbocations for further functionalization.

关键词： br?nsted acid catalysis desymmetrization phosphoric acid axially chiral biaryls central-to-axial conversion

Multiple Nanoparticles Coupling Strategy for Enhancing Optical Filter Performance of Spectral Splitter Used in Photovoltaic/Thermal System

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Journal of Thermal Science 2024年第1期33卷 368-382页

作者： liang Huaxu HUANG Xin WANG Fuqiang cheng Ziming dong Yan School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of New Energy Harbin Institute of Technology at WeihaiWeihai 264209China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

Selective absorptive nanofluid can pre-absorb certain sunlight wavelength that cannot be used by PV and transmits remaining sunlight to the surface of PV,which can decouple PV from the thermal receiver *** order to improve the harvesting of electricity and high-temperature thermal nanofluid,it is important to design an optimal optical filter window(transmit sunlight with wavelengths of 732-1067 nm to the surface of the photovoltaic cell and absorb the remaining sunlight).However,designing optimal optical filter is facing following challenges:(1) inherently narrow selective absorptivity property of single nanoparticle;(2) simplified numerical calculation method calculating transmittance;(3) ignoring the shape of the *** this study,the idea of using multiple nanoparticles coupling effect to design an optical filter is proposed,which can superimpose the narrow absorption bandwidth of different nanoparticles to obtain a wide absorption bandwidth of the whole *** addition,an improved transmission method considering light-matter interaction at air/vessel and liquid/vessel interfaces is adopted to compute the *** results calculated by improved transmission method are more accurate than widely used traditional Lambert-Beer law,which is verified by experimental ***,the effect of nanoparticle shape on spectral transmittance is also investigated,which shows that spiny Ag can approximately extend absorbance from 400 nm to 600 nm compared to nanosphere ***,the results show that optical filter efficiency of nanofluids with multiple nanoparticles coupling(Ag,spiny Ag,ZnO,ITO) can reached up to 35%.

关键词： solar energy PV/T nanofluid optimal optical filter radiative transfer spectral splitting

Vegetation Change and Soil Nutrient Distribution along an Oasis-Desert Transitional Zone in Northwestern China

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Journal of Integrative Plant Biology 2007年第11期49卷 1537-1547页

作者： Bao-Ming Chen Gen-Xuan Wang dong-liang cheng Jian-Min Deng Shao-Lin Peng Fu-Bo An State Key Laboratory of Biocontrol Zhongshan (Sun Yat-Sen) University Guangzhou 510275 China College of Life Sciences Zhejiang University Hangzhou 310027 China Key Laboratory of Arid and Grassland Agroecology of Ministry of Education Lanzhou University Lanzhou 730000 China Gansu Desert Control Institute Wuwei 733000 China

Many studies have focused on soil nutrient heterogeneity and islands of fertility in arid ecosystems. However, few have been conducted on an oasis-desert transitional zone where there is a vegetation pattern changing from shrubs to annual herbs. The goal of the present study was to understand vegetation and soil nutrient heterogenity along an oasis-desert transitional zone in northwestern China. Three replicated sampling belts were selected at 200 m intervals along the transitional zone. Twenty-one quadrats （10 x 10m） at 50m intervals were located along each sampling belt. The vegetation cover was estimated through the quadrats, where both the soil under the canopy and the open soil were sampled simultaneously. The dominated shrub was Haloxylon ammodendron in the areas close to the oasis and Nitraria tangutorum dominated the areas close to the desert. In general, along the transitional zone the vegetation cover decreased within 660 m, increased above 660 m and decreased again above 1 020 m （close to the desert）. The soil nutrients （organic matter, total N, NO3^- and NH4^＋） showed significant differences along the zone. The soil nutrients except the soil NH4^＋ under the canopy were higher than those in open soil, confirming ＂islands of fertility＂ or nutrient enrichment. Only a slight downward trend of the level of ＂islands of fertility＂ for soil organic matter appeared in the area within 900 m. Soil organic matter both under canopy and in interspace showed a positive correlation with the total vegetation cover, however, there was no significant correlation between the other soil nutrients and the total vegetation cover. We also analyzed the relationship between the shrubs and annuals and the soil nutrients along the zone. Similarly, there was no significant correlation between them, except soil organic matter with the annuals. The results implied that annual plants played an important role in soil nutrient enrichment in arid ecosystem.

关键词： China desert islands of fertility soil nutrient heterogeneity transitional zone.

Pathogenesis of idiopathic pulmonary fibrosis： from initial apoptosis of epithelial cells to lung remodeling？

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Chinese Medical Journal 2011年第24期124卷 4330-4338页

作者： JIN Hua-liang dong Jing-cheng Lab of Integrative Medicine for Lung Inflammation and CancersHuashan Hospital Fudan University Shanghai 200040 China

Idiopathic pulmonary fibrosis （IPF） is a progressive and often fatal form of interstitial lung disease. Despite extensive efforts in research during recent years, the mechanisms of the disease remain poorly understood. Evidence of an inflammatory mechanism, both supportive and contrary, is briefly reviewed in this paper. However, growing evidence has indicated that the apoptosis of alveolar epithelial cells （AECs） may be the early driving force of progression, with subsequent disrupted integrity of the alveolar-capillary basement membrane leading to an abnormal wound healing pathway. Thus, this paper will focus on outlining a process of pathogenesis of IPF from initial apoptosis of AECs to end

关键词： apoptosis pathogenesis idiopathic pulmonaryfibrosis

Two New Iridoid Glycosides from Caryopteris mongholica

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Chinese Chemical Letters 2000年第4期11卷 319-322页

作者： Yong Hong ZHANG dong liang cheng (Department of Chemistry, National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000) Lanzhou Univ Dept Chem Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

Two new iridoid glucosides were isolated from the whole plant of Caryopteris mongholica Bunge. On the basis of chemical and spectral evidence, they were determined as 8-acetyl-6'-O-(p-coumaroyl)harpagide and 6'-O-(p-c... 详细信息

关键词： Caryopteris mongholica verbanaceae 8-acetyl-6 '-O-(p-coumaroyl)harpagide 6 '-O-(p-coumaroyl)antirrinoside

A Facile Synthesis of (-)-5_αH,7β,10_α-Eudesmane-3,1 1-diene

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Chinese Chemical Letters 1996年第12期7卷 1081-1082页

作者： Ning ZOU dong liang cheng Xin Fu PAN Yao Zu CHEN(Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000) LANZHOU UNIV DEPT CHEMLANZHOU 730000PEOPLES R CHINA

s: The convenient synthesis of (-)-5αH.7β 10α-eudesmane-3. 11-dielle 1 has been achieved in four steps starting from R-(-)-carvone. The key step is the reductive deoxygenation of α,β-unsaturated tosylhydrazone to... 详细信息

关键词： A Facile Synthesis of Eudesmane-3,1 1-diene H,7