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Old-growth mixed dipterocarp forests show variable losses and gains in aboveground biomass and standing carbon over forty years

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Forest Ecosystems 2024年第1期11卷 14-23页

作者： Sisira Ediriweera champika Bandara Tithira Lakkana Shanika Jayasinghe David Woodbury Arun Dayanandan B.M.P.Singhakumara Xian.c.eng Mi I.A.U.n.Gunatilleke c.V.S.Gunatilleke Mark SAshton Department of Science and Technology Uva Wellassa UniversityBadullaSri Lanka The Forest School Yale School of the EnvironmentYale UniversityNew HavenCT06511USA Department of Forestry and Environmental Science University of Sri JayewardenepuraNugegodaSri Lanka State Key Laboratory of Vegetation and Environmental change Institute of BotanyChinese Academy of SciencesBeijing100093China Botany Department University of PeradeniyaPeradeniyaSri Lanka

Background:no studies have documented long-term trends in aboveground biomass(AGB)for mixed-dipterocarp forests(MDF),the dominant rain forest type in tropical wet equatorial *** our study,we sought to document such trends over forty years across three sites representing lowland to lower montane ***:To do this,we established fifty 100 m×25 m plots in 1978 across three sites sampled along an elevation gradient,identified as mature old-growth *** measured trees for diameter at breast height that we identified to species and *** took wood samples to calculate species wood-specific *** re-measured plots in 1998 and again in ***:We show standing AGB for all sites combined to be 517.52 Mg·ha^(-1)in 1978,but this declined by 17%over 40 years to 430.11 Mg·ha^(-1).no differences exist among sites in AGB primarily because of considerable within site variation;but interactions of time with site show declines across sites were not uniform,one remained about the *** few species represented a high proportion of the AGB with the top five species comprising between 34%and 65%,depending upon site and year *** species,Mesua nagassarium,represented a disproportionately large amount of AGB and decline over time,particularly at the low elevation ***:Our results are directly relevant to estimating AGB and standing carbon sequestered in *** study is the first to demonstrate varying but overall,declining trends in amounts of AGB among forests making predictions of biomass and standing carbon in MDF difficult over wide regions.

关键词： Western ghats Shorea spp. Southeast Asia Sri Lanka Tropical rain forest Wood specific gravity

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nonlinear-Optical Analogies in n.c.ear-Like Soliton Reactions:Selection Rules,nonlinear Tunneling and Sub-Barrier Fusion–Fission

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chinese Physics Letters 2024年第8期41卷 1-7页

作者： T.L.Belyaeva V.n.Serkin Universidad Autonoma del Estado de Mexico Av.Instituto Literario 100C.P.50000TolucaMexico Benemerita Universidad Autonoma de Puebla Av.4 Sur 104C.P.72001PueblaMexico

The main goal of our study is to reveal unexpected but intriguing analogies arising between optical solitons and n.c.ear physics,which still remain hidden from *** consider the main.c.rnerstones of the concept of nonlinear optics of n.c.ear reactions and the well-dressed repulsive-core *** the base of this model,we reveal the most intriguing properties of the nonlinear tunneling of n.c.eus-like solitons and the soliton selfinduced sub-barrier transparency *** describe novel interesting and stimulating analogies between the interaction of n.c.eus-like solitons on the repulsive barrier and n.c.ear sub-barrier *** main finding of this study concerns the conservation of total number of n.c.eons(or the baryon number)in n.c.ear-like soliton *** show that inelastic interactions among well-dressed repulsive-core solitons arise only when a“cloud”of“dressing”spectral side-bands appears in the frequency spectra of the *** property of n.c.eus-like solitons is directly related to the n.c.ear density distribution described by the dimensionless small shape-squareness *** the Fourier spectra of n.c.eus-like solitons are similar to the n.c.ear form *** show that the n.c.ear-like reactions between well-dressed solitons are realized by“exchange”between“particle-like”side bands in their spectra.

关键词： solitons soliton nonlinear

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STUDY On THE PROPERTIES OF BLEnD OF nATURAL RUBBER LATEX/METHYL METHAcRYLATE GRAFTED RUBBER LATEX BY GAMMA RADIATIOn

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chinese Journal of Polymer Science 2007年第5期25卷 519-523页

作者： n.c. Dafader M.E. Haque F. Akhtar n.c.ear and Radiation.c.emistry Division Institute of Nuclear Science ＆ Technology Bangladesh Atomic Energy Commission P. O. Box 3787 Dhaka Bangladesh

natural rubber latex （nRL） and methyl methacrylate （MMA） grafted rubber latex were blended in different ratios and irradiated at various absorbed doses by gamma rays from co-60 source at room temperature. The tensile properties, swelling ratio and permanent set were measured. The maximum tensile strength and modulus at 500% elongation were obtained at an absorbed dose of 8 kGy. Modulus increases from 6.99 MPa to 9.87 MPa for an increase in proportion of MMA grafted rubber from 40% to 60% in the blend at similar absorbed dose. Elongation at break and swelling ratio decrease with increasing absorbed dose as well as the MMA grafted rubber content in the blends. The decreasing trend of permanent set is high up to 5 kGy absorbed dose, and beyond that dose, it becomes almost flat.

关键词： natural rubber latex MMA grafted rubber latex Blend rubber Irradiation cross-link.

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Solar-assisted photocatalytic water splitting using defective UiO-66 solids from modulated synthesis

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nano Research 2024年第5期17卷 4134-4150页

作者： celia M.Rueda-navarro María cabrero-Antonino Paula Escamilla Valentín Díez-cabanes Dong Fan Pedro Atienzar Belén Ferrer Ign.c.o Vayá Guillaume Maurin Herme G.Baldoví Sergio navalón Departamento de Química Universitat Politècnica de ValènciaCamino de Vera s/nValencia 46022Spain Instituto de ciencia Molecular(IcMOL) Universitat de ValènciaPaterna 46980Spain IcGM Univ.MontpellierCNRSENSCMMontpellier34095France Instituto de Tecnología Química(UPV-cSIc) Universitat Politècnica de ValènciaAvenida de los Naranjos s/nValencia 46022Spain

Metal-organ.c.frameworks(MOFs)are attracting increasing interests as photocatalysts for solar-driven hydrogen production from *** paper reports on a comparative study of using either acetic acid(AA)or trifluoroacetic acid(TFA)as the representative UiO-66 organ.c.modulators for synthesizing visible light responsive UiO-66(Zr)-X(X:nH_(2) or nO_(2))photocatalysts for water *** results show that photocatalytic hydrogen generation from a water/methanol mixture can be improved by varying the nature and amount of the modulator employed to prepare the different UiO-66(Zr)-X(X:nH_(2) or nO_(2))solid ***-66(Zr)-nH_(2) was the most active photocatalyst,followed by UiO-66(Zr)-nO_(2),both prepared with 12 equivalents of AA with respect to the organ.c.*** UiO-66(Zr)-nH_(2) solid was more active than the parent MOF in photocatalytic overall water splitting(OWS)(H_(2) and O_(2) production of 450 and 160μmol·g^(-1),respectively,in 5 h;apparent quantum yield(AQY)at 400 nm of 0.06%)in the absence of methanol and compares favourably with analogous *** on the photocatalytic activity of the most active solids of both series was obtained by means of a series of techniques,including ultraviolet-visible(UV-vis)diffuse reflectance,X-ray photoelectron spectroscopy(XPS),laser flash photolysis(LFP),electron spin resonance(ESR),photoluminescence and photoelectrochemical measurements together with density functional theory(DFT)*** results showed that organ.c.acid modulators can be used to enhance the photocatalytic activity of missing linker UiO-66 defective materials in solar-powered water splitting.

关键词： heterogeneous photocatalysis metal-organ.c.frameworks(MOFs) UiO-66 materials carboxylic acid modulators water splitting solar light

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Academic productivity correlates with industry earnings in foot and ankle fellowship programs in the United States:A retrospective analysis

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World Journal of Orthopedics 2024年第2期15卷 129-138页

作者： Albert T Anastasio Anthony n Baumann Kempland c Walley Kyle J Hitchman.c.nor O’neill Jonathan Kaplan Samuel B Adams Department of Orthopedic Surgery Duke University HospitalDurhamNC 27710United States college of Medicine Northeast Ohio Medical UniversityRootstownOH 44272United States Department of Orthopedic Surgery University of MichiganAnn ArborMI 48109United States School of Osteopathic Medicine Campbell UniversityLillingtonNC 27546United States

BAcKGROUnD The study investigates the conn.c.ion between academic productivity and industry earnings in foot and ankle orthopedic surgery *** metrics like the H-index and Open Payments Database(OPD)data,it addresses a gap in understanding the relationship between scholarly achievements and financial outcomes,providing a basis for further exploration in this specialized medical *** To elucidate the trends between academic productivity and industry earnings across foot and ankle orthopedic surgery fellowship programs in the United *** This study is a retrospective analysis of the relationship between academic productivity and industry earnings of foot and ankle orthopedic surgery fellowships at an individual faculty and fellowship *** productivity was defined via H-index and recorded from the Scopus *** earnings were recorded from the *** Forty-eight foot and ankle orthopedic surgery fellowships(100%of fellowships)in the United States with a combined total of 165 physicians(95.9%of physicians)were *** individual physician(n=165)total life-time earnings reported on the OPD website was United States Dollar(USD)451430.30±1851084.89(range:USD 25.16-21269249.85;median:USD 27839.80).Mean physician(n=165)H-index as reported on Scopus is 14.24±12.39(range:0-63;median:11).There was a significant but weak correlation between individual physician H-index and individual physician total life-time earnings(Pn’s rho=0.334)and a significant and moderate positive correlation between.c.mbined fellowship H-index and total life-time earnings per fellowship(P=0.004,Spearman’s rho=0.409).cOncLUSIOn There is a significant and positive correlation between academic productivity and industry earnings at foot and ankle orthopedic surgery fellowships in the United *** observation is true on an individual physician level as well as on a fellowship level.

关键词： Sunshine act Foot and ankle Orthopedic surgery Orthopedic fellowship Industry earnings

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Unravelling cOVID-19 waves in Rio de Janeiro city:Qualitative insights from nonlinear dynamic analysis

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Infectious Disease Modelling 2024年第2期9卷 314-328页

作者： Adriane S.Reis Laurita dos Santos Américo cunha Jr Thaís c.R.O.Konstantyner Elbert E.n.Macao Institute of Science and Technology Federal University of São PauloSão Josédos CamposSPBrazil Physics Institute University of São PauloSão PauloSPBrazil Scientific and Technological Institute Universidade BrasilSão PauloSPBrazil Department of Applied Mathematics Rio de Janeiro State UniversityRio de JaneiroRJBrazil Paulista School of Medicine Federal University of São PauloSão PauloSPBrazil

Since the cOVID-19 pandemic was first reported in 2019,it has rapidly spread around the *** countries implemented several measures to try to control the virus *** healthcare system and consequently the general quality of life population in the cities have all been significantly impacted by the coronavirus *** different waves of contagious were responsible for the increase in the number of cases that,unfortunately,many times lead to *** this paper,we aim to characterize the dynamics of the six waves of cases and deaths caused by cOVID-19 in Rio de Janeiro city using techniques such as the Poincaréplot,approximate entropy,second-order difference plot,and central tendency *** results reveal that by examining the structure and patterns of the time series,using a set of non-linear techniques we can gain a better understanding of the role of multiple waves of cOVID-19,also,we can identify underlying dynamics of disease spreading and extract meaningful information about the dynamical behavior of epidemiological time *** findings can help to closely approximate the dynamics of virus spread and obtain a correlation between the different stages of the disease,allowing us to identify and categorize the stages due to different virus variants that are reflected in the time series.

关键词： cOVID-19 nonlinear analysis Poincaréplot central tendency measure

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cerebral small vessel disease modifies outcomes after minimally invasive surgery for intracerebral haemorrhage

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Stroke & Vascular neurology 2024年第4期9卷 446-456,I0147页

作者： Yunke Li Sung-Min.c.o Radhika Avadhani Hassan Ali Yi Hao Santosh B Murthy Joshua n Goldstein Fan Xia Xin Hu natalie L Ullman Issam Awad Daniel Hanley Wendy c Ziai The George Institute for Global Health BeijingChina Department of neurology Division of Neurocritical CareJohns Hopkins Medical InstitutionsBaltimoreMarylandUSA Department of neurology Division of Brain Injury OutcomesJohns Hopkins Medical Institutions CampusBaltimoreMarylandUSA Department of neurology Weill Cornell Medical CollegeNew YorkNew YorkUSA Department of Emergency Medicine Massachusetts General HospitalBostonMassachusettsUSA Department of neurosurgery West China Hospital of MedicineChengduSichuanChina Department of neurosurgery University of Chicago Pritzker School of MedicineChicagoIllinoisUSA

Background Minimally invasive surgery(MIS)for spontaneous supratentorial intracerebral haemorrhage(IcH)is controversial but may be beneficial if end-of-treatment(EOT)haematoma volume is reduced to≤15 *** explored whether MRI findings of cerebral small vessel disease(cSVD)modify the effect of MIS on long-term *** Prespecified blinded subgroup analysis of 288 subjects with qualified imaging sequences from the phase 3 Minimally Invasive Surgery Plus Alteplase for Intracerebral Haemorrhage Evacuation(MISTIE)*** tested for heterogeneity in the effects of MIS and MIS+EOT volume≤15 mL on the trial’s primary outcome of good versus poor function at 1 year by the presence of single cSVD features and cSVD scores using multivariable *** Of 499 patients enrolled in MISTIE III,288 patients had MRI,149(51.7%)randomised to MIS and 139(48.3%)to standard medical care(SMc).Median(IQR)IcH volume was 42(30–53)*** the full MRI cohort,there was no statistically significant heterogeneity in the effects of MIS versus SMc on 1-year outcomes by any specific cSVD feature or by cSVD scores(all P_(interaction)>0.05).In 94 MIS patients with EOT IcH volume≤15 mL,significant reduction in odds of poor outcome was found with cerebral amyloid angiopathy scorenteraction)=0.006),absence of lacunes(OR,0.37(0.18–0.80);P_(interaction)=0.02)and absence of severe white matter hyperintensities(WMHs)(OR,0.22(0.08–0.58);P_(interaction)=0.03).conclusions Following successful haematoma reduction by MIS,we found significantly lower odds of poor functional outcome with lower total burden of cSVD in addition to absence of lacunes and severe *** features may have utility for prognostication and patient selection in.c.in.c.l trials of MIS.

关键词： Surgery surgery absence

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Investigating Stability Properties for Transition Metal carbonate Precursors Using Universal cluster Expansion Technique(UncLE)as cathodes for Li-Ion Batteries

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材料科学与工程（中英文A版） 2024年第1期14卷 26-33页

作者： Mogahabo Tebogo Morukuladi n.L.Lethole M.c.Masedi n.n.ngoepe P.E.ngoepe Materials Modelling centre University of LimpopoPrivate Bag x1106Sovenga 0727South Africa Department of Physics University of Fort HareAlice 5700South Africa

The universal cluster expansion technique was used in this study to determine the binary phase diagrams for the transition metal carbonate precursors McO3(M:Mn,ni,co).The use of mixed cathode materials in lithium-ion batteries such as n.c.ni,Mn and co)formulations,is a strategic approach to optimize performance,enhance safety and address cost and environmental considerations in the rapidly evolving field of energy *** study focuses on the cost issue related to lithium ion batteries by investigating the manganese rich n.c.since manganese is more abundant and *** doped MncO3 with n.c.el and doped MncO3 with cobalt then ran.c.uster expansion.c.lculations to generate binary *** binary phase diagrams generated indicated that doping MncO3 with n.c.el favours the Mn-rich side,while doping MncO3 with cobalt favours 50%Mn-rich and 50%*** further extracted the most stable structures from both binary diagrams and determined their electron.c.mechan.c.l and vibrational stabilities using DFT(density functional theory)calculations within the LDA(local gradient approximation)with Hubbard parameter(U).The electron.c.properties revealed that both materials are semiconductors due to their narrow energy band gap obtained while the mechan.c.l properties showed that structures are mechan.c.lly stable since their n.c.ssary conditions for trigonal and triclin.c.systems were satisfied.

关键词： Binary phase diagrams mechan.c.l properties electron.c.conductivity phonon dispersion.c.rves.

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Anti-obesity effects of fucoidan from Sargassum thunbergii in adipocytes and high fat diet induced obese mice through inhibiting adipogen.c.specific tran.c.iption factor

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Food Science and Human Wellness 2024年第3期13卷 1608-1616页

作者： Hyo-Geun Lee H.H.A.c.K.Jayawardhana Fengqi Yang D.P.nagahawaththa n.M.Liyanage Kyung-Mo Song Yun-Sang choi Seung-Hong Lee You-Jin Jeon Min.c.eol Kang Department of Marine Life Sciences Jeju National UniversityJeju 63243Republic of Korea Marine Science Institute Jeju National UniversityJeju 63333Republic of Korea Research Group of Food Processing Korea Food Research InstituteWanju 55365Republic of Korea Department of Pharmoceutical Engineering Soonchunhyang UniversityAsan 31538Republic of Korea

The prevalence of obesity has increased and is a health concern *** to the concerns regarding synthetic anti-obesity treatments,nowadays natural products become a *** studies proved that there is a potential to use marine algae as anti-obesity ***,in this study,the lipid inhibitory effect of crude polysaccharide of amyloglucosidase-assisted hydrolysate from Sargassum thunbergii(STAc)and its fucoidan fractions(STAFs)on 3T3-L1 cells and high-fat diet(HFD)-induced obese mice were *** to the results,the STAF3,showed the highest xylose content and exhibited significant inhibitory effects on lipid accumulation by downregulating adipogen.c.and lipogen.c.proteins in 3T3-L1 ***,oral supplementation with STAc significantly declined gain in body weight and fat weight,and serum lipid contents in an HFD-induced obesity mouse *** and chemical characterizations demonstrated that puritied STAF3 has consistent surface morphology and small particle size,with similar structural characteristics as commercial ***,these results indicate that STAc and purified STAF3 from Sargassum thunbergia is a potent source to develop as ananti-obesity agents or functional food products to counter obesity.

关键词： Sargassum thunbergii Fucoidan Anti-obesity Anti-steatosis

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Alpha7 n.c.tin.c.receptors as potential theranostic targets for experimental stroke

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neural Regeneration Research 2024年第5期19卷 939-940页

作者： Maider Garbizu Laura Aguado Abraham Martín Achucarro Basque center for neuroscience LeioaSpain cIc biomaGUnE Basque Research and Technology AllianceSan SebastianSpain Ikerbasque Basque Foundation for Science BilbaoSpain

Inflammatory reflex and cholinergic anti-inflammatory pathway:Innate immune system triggers a local inflammatory response following an injury or a pathogen ***,this inflammatory response is limited by rapid,localized,and adaptive anti-inflammatory responses which are crucial for maintaining ***,the loss of these responses converts a limited and protective inflammatory response into an excessive and harmful ***-inflammatory responses are integrated into the central nervous system,since the central nervous system accumulates information about harmful events,activates defenses,and builds memory for *** the same time,it has been demonstrated that hypothalamic neuronal signaling can be altered by inflammation in peripheral ***,immune cells release neuropeptides and neurotransmitters such as acetylcholine(Ach),the main neurotransmitter of the parasympathetic autonomic nervous system,evidencing the commun.c.tion between the immune and nervous systems(Tracey,2002).

关键词： protective invasion Alpha

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