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A model of seasonal foliage dynamics of the subtropical mangrove species Rhizophora stylosa *** at the northern limit of its distribution

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Forestry Studies in China 2014年第3期16卷 147-157页

作者： Sahadev Sharma A t M RafiquI Hoque Kangkuso Analuddin Akio Hagihara Graduate School of Engineering and Science University of the Ryukyus Department of Mechanical and Environmental Informatics Tokyo Institute of Technology Institute of Forestry and Environmental Sciences Chittagong University Department of Biology Haluoleo University Laboratory of Ecology and Systematics Faculty of ScienceUniversity of the Ryukyus

Background： Progress of forest production in response to the environment requires a quantitative understanding of leaf area development. therefore, it is necessary to investigate the dynamics of seasonal crown foliage in order to understand the productivity of mangroves, which play an important role in the subtropical and tropical coastlines of the world. Method： Crown foliage dynamics of the mangrove Rhizophora styloso were studies to reveal patterns of leaf recruitment, survival and seasonal leaf area growth. Results： Flushing of leaves occurred throughout the year, but both flushing and leaf area growth pattern of leaves varied with season. Maximum flushing occurred in summer, but leaf areas did not differ significantly with season. the half-expansion period is longer, and the intrinsic rate of increase was lower in winter. Summer flushed leaves grew faster at their initial stage and reached their maximum area over a shorter period of time. the difference in temperature and air vapor pressure deficit （VPD） between summer and winter contributed to the present dynamics of foliage patterns. the mean leaf longevity was estimated to be 13.1 month. the crown foliage area was almost stable throughout the year. Conclusions： Homeostatic control of the crown foliage area may be accompanied by the existence of ecophysiological mechanisms in R. stylosa. Integrating crown foliage dynamics into forest models represents an important step towards incorporating physiological mechanisms into the models for predicting growth responses to environmental changes and for understanding the complex responses of tree growth and litter production.

关键词： Crown foliage area Rhizophora stylosa Leaf area growth Leaf survivorship Litterfall temperature

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Mass transfer of an organophosphate flame retardant between product source and dust in direct contact

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Emerging Contaminants 2017年第3期3卷 115-120页

作者： Ioannis Liagkouridis Borislav Lazarov Georgios Giovanoulis Ian t.Cousins Department of Environmental Science and Analytical Chemistry(ACES) Stockholm UniversitySE 10691StockholmSweden Environmental Risk and Health Unit VITOBoeretang 2002400MolBelgium IVL Swedish Environmental Research Institute P.O.Box21060SE 10031StockholmSweden

Organophosphate flame retardants(OPFRs)are a group of semi-volatile organic compounds(SVOCs)and among the most abundant contaminants *** indoor presence has been associated with potential health risks however there is limited understanding as to how they are released from indoor *** study uses an emission micro-chamber to explore one of the currently understudied chemical migration pathways;direct transfer between a source material and settled dust in contact with the source.A tris(2-chloroisopropyl)phosphate(tCIPP)-treated insulation board is used as the source *** and substantial transfer was observed after only 8 h of source-dust contact,resulting in 80 times higher concentrations in dust compared to pre-experiment *** time points at 24 h and 7 d showed similarly high average dust levels and the tCIPP in the dust and air in the chamber was calculated to be close to thermodynamic *** was concluded that tCIPP was effectively transferred from the insulation board to the dust on its surface and the surrounding air via gas-phase *** a real room,a gradient of tCIPP concentrations in air above the surface of a product could result in higher concentrations in dust sitting on the product than dust in the rest of the room.

关键词： OPFRs Source-to-dust transfer Indoor dust tCIPP Micro-chamber Air-dust equilibrium

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Effect of Solanum surattense seed on the oxidative potential of cauda epididymal spermatozoa

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Asian Pacific Journal of tropical Biomedicine 2012年第1期2卷 21-23页

作者： thirumalai t David E Viviyan therasa S Elumalai EK Post Graduate and Research Department of Zoology Voorhees CollegePhysiology Wing

Objective:to evaluate the effect of aqueous seed extract of Solarium suratlense(***)on the oxidative potential of cauda cpididymal ***:*** seed extract was orally administered at the dosage of 10 mg/kg *** 15 days,after which aspartate transferase(ASt),alanine transferase(ALt),glutamate dehydrogenase(GDH),citric acid and isocitrate dehydrogenase(ICDH)were ***:the activity levels of the enzymes ASt and ALt,which are considered to be the androgenicity in the sperm suspension,were depleted in the extract fed *** activity level of the enzyme ICDH,was reduced significantly in the treated group(Pt can be concluded that the oral administration of the aqueous seed extract of *** can deplete the oxidative stress of cauda epididymal spermatozoa in albino rats.

关键词： Sperm Solanum surattense Contraception Antifertility

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Glecaprevir/pibrentasvir+sofosbuvir for post-liver transplant recurrent hepatitis C virus treatment

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World Journal of Hepatology 2023年第2期15卷 318-320页

作者： Rishi Arora Michelle t Martin Justin Boike Sonalie Patel Department of Pharmacy Northwestern MedicineChicagoIL 60611United States Department of Pharmacy Practice University of Illinois at Chicago College of PharmacyUniversity of Illinois Hospital and Health Sciences SystemChicagoIL 60612United States Division of Hepatology Northwestern MedicineChicagoIL 60611United States

Glecaprevir/pibrentasvir in combination with sofosbuvir may serve as a safe and effective option for treatment of recurrent hepatitis C virus post-liver transplant in patients who previously failed direct-acting antiv... 详细信息

关键词： Hepatitis C virus Direct-acting antivirals Liver transplantation Glecaprevir/pibrentasvir Sofosbuvir Ribavirin

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the relative age effect has no influence on match outcome in youth soccer

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Journal of Sport and Health Science 2014年第4期3卷 273-278页

作者： Donald t.Kirkendall Center for Learning Health Care Duke Clinical Research InstituteDurhamNC 27715USA

Purpose： In age-restricted youth sport, the over-selection of athletes born in the first quarter of the year and under-selection of athletes born in the last quarter of the year has been called the relative age effect （RAE）. Its existence in youth sports like soccer is well established. Why it occurs has not been identified, however, one thought is that older players, generally taller and heavier, are thought to improve the team＇s chances of winning. to test this assumption, birth dates and match outcome were correlated to see if teams with the oldest mean age had a systematic advantage against teams with younger mean ages. Methods： Player birth dates and team records （n = 5943 players on 371 teams; both genders; U11-U16） were obtained from the North Carolina Youth Soccer Association for the highest level of statewide youth competition. Results： the presence of an RAE was demonstrated with significant oversampling from players born in the I st vs. the 4th quarter （overall： 29.6% vs. 20.9% respectively, p 〈 0.0001）. Mean team age was regressed on match outcomes （winning %, points/match, points/goal, and goals for, against, and goal difference）, but there was no evidence of any systematic influence of mean team age and match outcomes, except possibly in U11 males. Conclusion： Selecting players based on physical maturity （and subsequently, on age） does not appear to have any systematic influence on match outcome or season record in youth soccer suggesting that the selection process should be focused on player ability and not on physical maturation.

关键词： Match outcomes Relative age effect Soccer Youth sport

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A Mild and Efficient Procedure for the Preparation of Chromone-2-carboxylates

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Chinese Chemical Letters 2006年第8期17卷 1005-1008页

作者： Juan Hong yu yu She YANG Ru yun JI State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 201203

A mild and efficient procedure to build up various chromone-2-carboxylates was developed. Condensation of diverse 2-hydroxyacetophones with tetr-butyl oxalate in the presence of sodium ethoxide could be accomplished rapidly under mild condition. Cyclodehydration was carried out to achieve chromone-2-carboxylates in one-pot with impressive yield. Advantages over conventional methods with diethyl oxalate were observed in yield and reaction time.

关键词： Chromone-2-carboxylates tea-butyl ethyl oxalate diethyl oxalate.

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Preparation, characterization and electrochemical properties of mesoporous LiFe_(0.99)Mo_(0.01)PO_4/C

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Rare Metals 2009年第4期28卷 317-321页

作者： yu Chunyang WANG Zhongli CHEN yu XIA Dingguo CHU Wangsheng WU Ziyuc Biochemical Engineering College Beijing Union University Beijing 100023 China College of Environmental and Energy Engineering Beijing University of Technology Beijing 100022 China Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

A mesoporous LiFe0.99Mo0.01PO4/C composite was synthesized by the sol-gel method using （NH4）2MoO4 as a doping starting material. the formation of conductive carbon, metal doping and mesopores was achieved simultaneously in the prepared material. the characterizations of crystal structures and microstructures were investigated using X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （tEM）, extended X-ray-absorption fine-structure （EXAFS） and X-ray-absorption near-structure spectroscopy （XANES） while the surface area was determined using N2 adsorption techniques. Cyclic voltammetry （CV） and charge-discharge cycling performance were used to characterize its electrochemical properties. the sample possessed uniformly distributed mesopores with an average pore size of 4 nm, and the specific surface area was about 69.368 m^2/g. the results show that the reversible capacity of mesoporous LiFe0.99Mo0.01PO4/C is about 160 mAh/g at 0.1C, 135 mAh/g at 1C and 90 mAh/g at 5C, respectively. the capacity fading is neglectable.

关键词： lithium ion battery cathode material mesoporous composite electrochemical properties

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Nonlocal Optical Spatial Soliton with a Non-parabolic Symmetry and Real-valued Convolution Response Kernel

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Communications in theoretical Physics 2008年第4期49卷 1029-1032页

作者： yu Chao-Fan LIANG Guo-Dong yu Xiao-Min Department of Physics Guangdong Education College Guangzhou 510303 China Department of Physics Jinan University Guangzhou 510632 China

Based on the picture of nonJinear and non-parabolic symmetry response, i.e., Δn2 （I） ≈ ρ（ao ＋ a1x - a2 x^2）, we propose a model for the transversal beam intensity distribution of the nonlocal spatial soliton. In this model, as a convolution response with non-parabolic symmetry, Δn2 （I）≈ρ（b0＋ b1f - b2 f^2 with b2/b1 〉 0 is assumed. Furthermore, instead of the wave function Ψ, the high-order nonlinear equation for the beam intensity distribution f has been derived and the bell-shaped soliton solution with the envelope form has been obtained. the results demonstrate that, since the existence of the terms of non-parabolic response, the nonlocal spatial soliton has the bistable state solution. If the frequency shift of wave number β satisfies 0 〈 4（β - ρbo/μ）〈 3η0/8α, the bistable state soliton solution is stable against perturbation. It should be emphasized that the soliton solution arising from a parabolic-symmetry response kernel is trivial. the sufficient condition for the existence of bistable state soliton solution b2/b1〉 0 has been demonstrated.

关键词： nonlocal optical spatial soliton non-parabolic symmetry response model bistable state soliton

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COMPARISON OF tHREE MEtHODS tO PREDICt ADSORPtION ISOtHERMS FOR ORGANIC VapORS FROM SIMILAR AND NON-SIMILAR POLARItY REFERENCE VapORS

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Chinese Journal of Chemical Engineering 1989年第2期 298-308页

作者：汪大翚 t.Shen Kenneth E.Noll Department of Chemical Engineering Zhejiang University Hangzhou Department of Environmental Engineering Illinois Institute of Techmology Chicago IL 60616 U.S.A.

the Polanyi-Dubinin equation was used to predict adsorption isotherms for eight organic vapors at 25℃ and for two organic vapors at 25℃, 40℃ and 60℃ on activated carbon in this analysis. the theoretical affinity coefficient, β, was calculated by three methods (molar volume, molecular parachor and electronic polarization) based on nonpolar and polar reference vapors.

关键词： isotherms affinity molar Polar deviation polar monitored adsorbed maintained beads

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Electronic Structures of Wurtzite GaN with Ga and N Vacancies

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Chinese Physics Letters 2007年第7期24卷 2048-2051页

作者：庞超史俊杰张艳 K.S.A.Butcher t.L.tansley J.E.Downes 尚家香 State Key Laboratory [or Mesoscopic Physics and School of Physics Peking University Beijing 100871 Semiconductor Science and technology Laboratories Department of Physics Macquarie University New South Wales 2109 Australia School of Materials Science and Engineering Beijlng University of Aeronautics and Astronautics Beijing 100083

the electronic band structures of wurtzite GaN with Ga and N vacancy defects are investigated by means of the first-principles total energy calculations in the neutral charge state. Our results show that the band structures can be significantly modified by the Ga and N vacancies in the GaN samples. Generally, the width of the valence band is reduced and the band gap is enlarged. the defect-induced bands can be introduced in the band gap of GMV due to the Ga and N vacancies. Moreover, the GaN with high density of N vacancies becomes an indirect gap semiconductor. three defect bands due to Ga vacancy defects are created within the band gap and near the top of the valence band. In contrast, the N vacancies introduce four defect bands within the band gap. One is in the vicinity of the top of the valence band, and the others are near the bottom of the conduction band. the physical origin of the defect bands and modification of the band structures due to the Ga and N vacancies are analysed in depth.

关键词： GENERALIZED GRADIENt apPROXIMAtION LIGHt-EMIttING-DIODES NAtIVE DEFECtS GALLIUM NItRIDE AIN INN

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