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The tropical-subtropical evergreen forest transition in East Asia:An exploration

Plant Diversity 2020年第4期42卷 255-280页

作者： Peter Ashton hua zhu Arnold Arboretum Harvard UniversityRoyal Botanic GardensKewUK Center for Integrative Biology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnanPR China

The transition from tropical to subtropical(warm temperate)evergreen forests is more clearly apparent in East Asia,fromNepal to the western Pacific coast,than elsewhere in the *** review the nature of this transition and hypothesize the physical,ultimately climatic,factors thatmay maintain it,with a special focus on how the increasing instability and warming of climates will affect these forests.A primary climatic mediator of the transition is proposed,thereby offering a testable hypothesis for the climateeforest transition *** is known of this transition is summarized in context of the primary climatic mediators of elevational zonation of forest formations in equatorial Asia to the tree line,in the Himalaya at the India-Indo-Burma northern tropical margin,and as both elevational and latitudinal zonation in southern *** secondary edaphic and other physical changes are described for the Himalaya,and hypothesized for southern *** forest ecotones are seen to be primarily defined by tree floristic change,on which account changes in structure and physiognomy are *** montane tropical-subtropical transition in the Himalaya is narrowand observed to correlate with an as yet ill-defined frost line.A distinct tropical-subtropical transition forest is recognized in the southwest *** is a total change in canopy species at the Himalayan ecotone,but subcanopy tropical species persist along an elevational decline of c.400 *** latitudinal transition in South China is analogous,but here the tropical subcanopy component extends north over ten degrees latitude,albeit in *** tropical-subtropical transition is uniquely clear in East Asia because here alone a tropical wet summer-dry winter monsoon extends to 35north latitude,encompassing the subtropical evergreen forest,whereas subtropical evergreen forests elsewhere exist under drier temperate summer climate regimes.

关键词： Tropical Subtropical Forest transition Ecotone East Asia

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A Filter Method for Nonlinear Semidefinite Programming with Global Convergence

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Acta Mathematica Sinica,English Series 2014年第10期30卷 1810-1826页

作者： Zhi Bin zhu hua Li zhu School of Mathematics and Computing Science Guilin University of Electronic Technology

In this study, a new filter algorithm is presented for solving the nonlinear semidefinite programming. This algorithm is inspired by the classical sequential quadratic programming method. Unlike the traditional filter methods, the sufficient descent is ensured by changing the step size instead of the trust region radius. Under some suitable conditions, the global convergence is obtained. In the end, some numerical experiments are given to show that the algorithm is effective.

关键词： Cone programming nonlinear semidefinite programming filter method step size globalconvergence

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bmo _ρ(ω) Spaces and Riesz transforms associated to Schrdinger operators

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Science China Mathematics 2016年第10期59卷 1995-2018页

作者： zhu hua ZHANG Qian School of General Education Beijing International Studies UniversityBeijing 100024China School of Mathematical Sciences Peking UniversityBeijing 100871China

We introduce the BMO-type space bmo ρ（w） and establish the duality between h^1ρ（ω） and bmo ρ（ω）,where ω∈A1^ρ∞（R^n） and ω＇s locally behave as Muckenhoupt＇s weights but actually include them. We also give the Fefferman-Stein type decomposition of bmop（ω） with respect to Riesz transforms associated to Schrodinger operator L,where L=-△＋V is a SchrSdinger operator on R^2 （n≥3） and V is a non-negative function satisfying the reverse HSlder inequality.

关键词： bmo ρ(ω) spaces Riesz transforms Schrodinger operator

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Synergistic catalysis of the N-hydroxyphthalimide on flower-like bimetallic metal-organic frameworks for boosting oxidative desulfurization

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Petroleum Science 2024年第1期21卷 674-682页

作者： Jing He Kun zhu Wei Jiang Dong-Ao zhu Lin-hua zhu Hai-Yan huang Wen-Shuai zhu hua-Ming Li Institute for Energy Research Jiangsu UniversityZhenjiang212013JiangsuChina College of Chemistry and Chemical Engineering Hainan Normal UniversityKey Laboratory of Water Pollution Treatment and Resource Reuse of Hainan ProvinceHaikou571158HainanChina

Synergic catalytic effect between active sites and supports greatly determines the catalytic activity for the aerobic oxidative desulfurization of fuel *** this work,Ni-doped Co-based bimetallic metal-organic framework(CoNi-MOF)is fabricated to disperse N-hydroxyphthalimide(NHPI),in which the whole catalyst provides plentiful synergic catalytic effect to improve the performance of oxidative desulfurization(ODS).As a bimetallic MOF,the second metal Ni doping results in the flower-like morphology and the modification of electronic properties,which ensure the exposure of NHPI and strengthen the synergistic effect of the overall *** with the monometallic Co-MOF and naked NHPI,the NHPI@CoNi-MOF triggers the efficient activation of molecular oxygen and improves the ODS performance without an *** sulfur removal of dibenzothiophene-based model oil reaches 96.4%over the NHPI@CoNi-MOF catalyst in 8 h of ***,the catalytic product of this aerobic ODS reaction is sulfone,which is adsorbed on the catalyst surface due to the difference in *** work provides new insight and strategy for the design of a strong synergic catalytic effect between NHPI and bimetallic supports toward high-activity aerobic ODS materials.

关键词： Metal-organic frameworks Doped Bimetallic N-hydroxyphthalimide Aerobic processes Oxidative desulfurization

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On Boolean elements and derivations in 2-dimension linguistic lattice implication algebras

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Applied Mathematics(A Journal of Chinese Universities) 2023年第2期38卷 274-292页

作者： zhu hua ZHAO Jian-bin School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China Henan Academy of Big Data Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Financial Engineering Zhengzhou 450001China Key Laboratory of Big Data Analysis and Application Zhengzhou 450001China

A 2-dimension linguistic lattice implication algebra(2DL-LIA)can build a bridge between logical algebra and 2-dimension fuzzy linguistic *** this paper,the notion of a Boolean element is proposed in a 2DL-LIA and some properties of Boolean elements are *** derivations on 2DL-LIAs are introduced and the related properties of derivations are ***,it proves that the derivations on 2DL-LIAs can be constructed by Boolean elements.

关键词： derivation Boolean element Lattice implication algebra(LIA) 2-dimension linguistic lattice implication algebra(2DL-LIA) 2-dimension fuzzy linguistic information

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Tracing the behaviour of hexachlorobenzene in a paddy soil-rice system over a growth season

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Journal of Environmental Sciences 2008年第1期20卷 56-61页

作者： YANG hua ZHENG Minghui zhu Yongguan Research Center for Eco-Environrnental Sciences Chinese Academy of Sciences Beijing 100085 China.

Hexachlorobenzene （HCB）, a persistent organic pollutant （POP）, has been found in paddy soils. To improve the understanding of HCB contamination in paddy soils, a laboratory simulative study was carried out to investigate the behavior of HCB in a paddy soil and rice plants. This study was divided into three experiments. First, an experiment aimed to examine the evaporation of HCB in paddy soil. In the second experiment, rice was planted in 10 mg/kg HCB contaminated soil and after pot culture at 3, 6, 9, and 27 weeks （at maturity）, both soil and plant samplings were scheduled to be sampled. The soil samples comprised rhizosphere soil, nortrhizosphere soil, and unplanted contaminated soil, whereas plant samples included shoots, roots, and rice grains （dehusked）. Lastly, in this part, HCB in xylem saps was designed to be examined. The results showed that （1） the HCB translocation from paddy soil to rice by vaporization; （2） the HCB concentration in rice grains was surprisingly high; （3） the observed HCB decrease in rice rhizosphere offers a potential means for in situ HCB degradation; （4） HCB might not be transported along transpiration in rice.

关键词： HCB paddy soil rice rhizosphere xylem sap

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Fractal Prediction Model of Thermal Contact Conductance of Rough Surfaces

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Chinese Journal of Mechanical Engineering 2013年第1期26卷 128-136页

作者： JI Cuicui zhu hua JIANG Wei School of Mechanical and Electrical Engineering China University of Mining and Technology School of Mechanical Engineering University of Leeds

The thermal contact conductance problem is an important issue in studying the heat transfer of engineering surfaces, which has been widely studied since last few decades, and for predicting which many theoretical models have been established. However, the models which have been existed are lack of objectivity due to that they are mostly studied based on the statistical methodology characterization for rough surfaces and simple partition for the deformation formats of contact asperity. In this paper, a fractal prediction model is developed for the thermal contact conductance between two rough surfaces based on the rough surface being described by three-dimensional Weierstrass and Mandelbrot fractal function and assuming that there are three kinds of asperity deformation modes： elastic, elastoplastic and fully plastic. Influences of contact load and contact area as well as fractal parameters and material properties on the thermal contact conductance are investigated by using the presented model. The investigation results show that the thermal contact conductance increases with the increasing of the contact load and contact area. The larger the fractal dimension, or the smaller the fractal roughness, the larger the thermal contact conductance is. The thermal contact conductance increases with decreasing the ratio of Young＇s elastic modulus to the microhardness. The results obtained indicate that the proposed model can effectively predict the thermal contact conductance at the interface, which provide certain reference to the further study on the issue of heat transfer between contact surfaces.

关键词： rough surface fractal thermal contact conductance prediction model

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Theoretical and experimental research on heat transfer performance of the semi-open heat pipe

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第3期9卷 410-415页

作者： hua zhu Bo ZhuaN Jin-jun TAN Rong-hua HONG Institute of Thermal Science and Power Systems Zhejiang University Hangzhou 310027 China

This paper focuses on the heat transfer performance of semi-open heat pipe which is a new type of heat pipe. After analyzing its condensation heat transfer mechanisms theoretically, several semi-open heat pipes in different length ratios and upper hole diameters are studied experimentally and compared with the same dimensions closed heat pipes. Experimental results show that the heat transfer performance of semi-open heat pipe becomes better by increasing heat transfer rate. At the first transitional point, the heat transfer performance of semi-open heat pipe approaches the level of the closed heat pipe. It is suitable to choose upper small hole about 1 mm in diameter and length ratio larger than 0.6 for the semi-open heat pipe.

关键词： Semi-open heat pipe Heat transfer performance Closed heat pipe First transitional point

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An iterative approach to Bayes risk decoding and system combination

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第3期12卷 204-212页

作者： Hai-hua XU Jie zhu Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240 China

We describe a novel approach to Bayes risk(BR) decoding for speech recognition,in which we attempt to find the hypothesis that minimizes an estimate of the BR with regard to the minimum word error(MWE) *** achieve this,we propose improved forward and backward algorithms on the lattices and the whole procedure is optimized *** remarkable characteristics of the proposed approach are that the optimization procedure is expectation-maximization(EM) like and the formation of the updated result is similar to that obtained with the confusion network(CN) decoding *** results indicated that the proposed method leads to an error reduction for both lattice rescoring and lattice-based system combinations,compared with CN decoding,confusion network combination(CNC),and ROVER methods.

关键词： Bayes risk(BR) Confusion network Speech recognition Lattice rescoring System combination

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Ocular herpes:the pathophysiology,management and treatment of herpetic eye diseases

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Virologica Sinica 2014年第6期29卷 327-342页

作者： Lucy zhu hua zhu Department of Microbiology Biochemistry & Molecular Genetics RutgersRutgers-New Jersey Medical SchoolNew Jersey 07103USA

Herpesviruses are a prominent cause of human viral disease, second only to the cold and influenza viruses. Most herpesvirus infections are mild or asymptomatic. However, when the virus invades the eye, a number of pathologies can develop and its associated sequelae have become a considerable source of ocular morbidity. The most common culprits of herpetic eye disease are the herpes simplex virus(HSV), varicella zoster virus(VZV), and cytomegalovirus(CMV). While primary infection can produce ocular disease, the most destructive manifestations tend to arise from recurrent infection. These recurrent infections can wreck devastating effects and lead to irreversible vision loss accompanied by a decreased quality of life, increased healthcare usage, and significant cost burden. Unfortunately, no method currently exists to eradicate herpesviruses from the body after infection. Treatment and management of herpes-related eye conditions continue to revolve around antiviral drugs, although corticosteroids, interferons, and other newer therapies may also be appropriate depending on the disease presentation. Ultimately, the advent of effective vaccines will be crucial to preventing herpesvirus diseases altogether and cutting the incidence of ocular complications.

关键词： ocular herpes herpetic eye diseases varicella zoster virus(VZV) cytomegalovirus(CMV) herpes simplex virus(HSV)

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