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Evidence for further charmonium vector resonances

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Chinese Physics C 2011年第4期35卷 319-324页

作者： eef van Beveren George Rupp Centro de Física Computacional Departamento de Física Universidade de Coimbra Centro de Física das Interaccoes Fundamentais Instituto Superior Tèecnico Universidade Tèecnica de Lisboa Edifício Ciêencia

We discuss the shape of threshold signals in production cross sections of the reaction e＋e- → D＊ Dˉ＊, at the opening of the Ds＊ Dˉs＊ and Λc＋ Λ＋c channels. Furthermore, evidence for the ψ（3D）, ψ（5S）, ψ（4D）, ψ（6S）, ψ（5D）, ψ（7S）, ψ（6D）, and ψ（8S） new charmonium vector resonances is presented, on the basis of data recently published by the BABAR Collaboration. Central masses and resonance widths are estimated. Confirmation of these resonances would be a huge step in lifting the precision level of hadron spectroscopy towards that of atomic spectroscopy, with far-reaching consequences for theory.

关键词： heavy quarkonia hadron production in electron-positron annihilation

Why static bound-state calculations of tetraquarks should be met with scepticism

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Chinese Physics C 2017年第5期41卷 49-53页

作者： George Rupp eef van Beveren Centro de Fisica e Engenharia de Materiais Avancados Instituto Superior Tecnico Universidade de Lisboa P-1049-001 Lisboa Portugal Centro de Fisica da UC Departamento de Fisica Universidade de Coimbra P-3004-516 Coimbra Portugal

Recent experimental signals have led to a revival of tetraquarks,the hypothetical q~2q~2 hadronic states proposed by Jaffe in 1976 to explain the light scalar *** structures with exotic quantum numbers have indeed been observed recently,though a controversy persists as to whether these are true resonances and not merely kinematical threshold enhancements,or otherwise states not of a true q~2q~2 ***,puzzling non-exotic mesons are also often claimed to have a tetraquark ***,the corresponding model calculations are practically always carried out in pure and static bound-state approaches,ignoring completely the coupling to asymptotic two-meson states and unitarity,especially the dynamical effects *** this short paper we argue that these static predictions of real tetraquark masses are highly unreliable and provide little evidence of the very existence of such states.

关键词： meson scalar quark dynamical asymptotic otherwise argue merely decay exotic

Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang Sonata S y yau Kwok-Fai So Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNS Regeneration(Ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key Laboratory of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise

Gene therapy for spinal muscular atrophy:perspectives on the possibility of optimizing SMN1 delivery to correct all neurological and systemic perturbations

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Neural Regeneration Research 2025年第7期20卷 2011-2012页

作者： Sharon J.Brown Rafael J.yáñez-Muñoz Heidi R.Fuller School of Pharmacy and Bioengineering Keele UniversityKeeleUK Wolfson Center for Inherited Neuromuscular Disease TORCH BuildingRJAH Orthopaedic HospitalOswestryUK *** Center of Gene and Cell TherapyDepartment of Biological SciencesSchool of Life Sciences and the EnvironmentRoyal Holloway University of LondonEghamUK

Spinal muscular atrophy(SMA)is a genetic condition that results in selective lower motor neuron loss with concomitant muscle weakness and *** genetic cause of SMA was understood in 1995 when loss or impairment of the survival motor neuron 1(SMN1)gene was identified as the main contributing factor(Lefebvre et al.,1995).This,in combination with the discovery that humans have a“back-up”gene,SMN2,which can produce low levels(approximately 10%)of the full-length functional SMN protein,has led to the generation of SMA-specific gene *** was traditionally classified according to age of symptom onset and developmental milestones achieved,with life expectancy and severity varying between ***,SMN2 copy number is used as a proxy for the prediction of disease severity,with higher SMN2 copy number typically being associated with reduced severity of SMA,although this relationship is not absolute:some individuals with low SMN2 copy number have less severe SMA phenotypes and vice ***,the etiology of SMA is further complicated by other factors,such as non-typical nucleotide variants and SMN2-independent modifiers of disease severity.

关键词： atrophy traditionally absolute

Potential of exclosure on aboveground biomass carbon stock and ecological fitness of woody species in Jabi Tehnane district, northwestern Ethiopia

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Ecosystem Health and Sustainability 2019年第1期5卷 79-85,I0017页

作者： Melkamu Terefe Asmare abdella Gure Jimma Center Ethiopian Environment and Forest Research InstituteJimmaSouth West Ethiopia Wondo Genet College of Forestry and Natural Resources Hawassa UniversityShashemenEthiopia

Assessment of ecological fitness of woody species across land use is critical issues in degraded land ***,little is known about AGBC stored capacity,important value and distribution index of woody species grows in exclosure and adjacent open ***,this research is aimed to(i)analyse impact of exclosure on AGBC(ii)ecological fit species.A random sampling method was *** sample plots(50m*50m)were *** stocks(mean±SE)of woody species in adjacent open grazing and exclosure land use of GW site was 0.11±0.07 and 1.24±0.27Mg ha^(-1) *** in adjacent open grazing and exclosure land use of WG site,the value was 0.27±0.03 and 2.79±0.27Mgha^(-1) *** both site exclosure land uses,the proportion of rare,occasional and common woody species were better than their adjacent open grazing *** lustanica from open grazing and Vernonia auriculifera from exclosure land use of WG as well as Croton macrostachyus from open grazing and Leucaena leucocephala fromexclosure land use of GWsite were recorded as top ecologically fit *** is recommended to protect degraded lands via integrating ecologically adapted native species and fully used their diversity to achieve the potential benefits of land restoration.

关键词： Aboveground biomass carbon distribution index exclosure important value index

Effect of exclosure on woody species diversity and population structure in comparison with adjacent open grazing land: the case of Jabi Tehnan district north western Ethiopia

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Ecosystem Health and Sustainability 2019年第1期5卷 98-109,I0011页

作者： Melkamu Terefe Asmare abdella Gure Jimma Center Ethiopian Environment and Forest Research InstituteEthiopia Wondo Genet College of Forestry and Natural Resource Hawassa UniversityShashemeneEthiopia

Land rehabilitation by area exclosure was the fastest and moderate approach of recovering degraded ***,the effect of exclosure on woody species parameters in Jabitehnan district,north-western Ethiopia has not been ***,the current study was conducted(i)to assess and compare diversity,composition and density of woody species in exclosure and adjacent open lands,and(ii)to analyze population structure as well as regeneration status of woody species.A random sampling method was employed to select a total of 40 sample plots(50m*50m).A total of 8 parallel transect lines were used inside and outside the exclosure land in each site for consecutive(50m interval)plot *** diversity was 1.7 and 3.03 for WG,1.1 and 2.94 for GW open and exclosures,*** structure of woody species in exclosures of both sites exhibited an inverted J shape which indicates good regeneration status,while in adjacent open grazing land it exhibited partial bell ***,exclosure provides various biophysical benefits better than adjacent open grazing *** is recommended to protect degraded lands by exclosure via integrating appropriate species and convert their diversity into use so as to develop their potential benefits on land restoration.

关键词： Composition disturbance diversity exclosure regeneration pattern rehabilitation

Silicon-mediated genotoxic alterations in Brassica juncea under arsenic stress: A comparative study of biochemical and molecular markers

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Pedosphere 2020年第4期30卷 517-527页

作者： Afsana PRAVEEN Chandana PANDEy Ehasanullah KHAN medha.PANTHRI Meetu GUPTA Ecotoxicogenomics Laboratory Department of BiotechnologyJamia Millia IslamiaNew Delhi 110025(India)

Arsenic(As),one of the most harmful toxicant at the global level,severely affects plant metabolism when taken ***,the presence of silicon(Si)as a fertilizer in As-contaminated soil is an effective strategy to decrease As accumulation in *** juncea(***)were grown hydroponically to investigate the role of Si at biochemical and molecular levels under arsenite(As^3+)*** of *** were exposed to As^3+,Si,and a combination of both *** data demonstrated that seedlings exposed to As^3+showed an inhibition in shoot length,chlorophyll,carotenoid,and protein,while co-application of Si improved these growth *** supplementation reduced As accumulation in ***/decrease was observed in stress-related parameters(cysteine and proline),antioxidant enzymes(superoxide dismutase,ascorbate peroxidase,and catalase),and oxidative stress markers(malondialdehyde and H2O2),which were improved upon co-application of Si as compared to As^3+alone *** amplified polymorphic DNA(RAPD)is a suitable biomarker assay for plants for assessing the *** RAPD primers produced a total of 39 and 48 bands in the leaves of the untreated and treated seedlings,*** RAPD band-profiles and genomic template stability were consistent with other growth and physiological *** conclusion,the genotoxic alterations along with the biochemical parameters indicate that the exposure to Si mitigates As^3+-induced oxidative stress by improving the stress-related parameters and antioxidant system in ***.

关键词： antioxidant enzyme genomic template stability genotoxicity polymorphism RAPD

Future of mental health in the metaverse

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General Psychiatry 2022年第4期35卷 224-229页

作者： Sadia Suhail Usmani medha.Sharath Meghana Mehendale Department of Psychiatry Dow University of Health SciencesKarachiPakistan Department of Medicine Insight Hospital&Medical Center ChicagoChicagoIllinoisUSA Department of Psychiatry Bangalore Medical College and Research InstituteBangaloreKarnatakaIndia Department of Psychiatry Smolensk State Medical UniversitySmolenskRussian Federation

The metaverse and non-fungible tokens(NFTs)were some of the hottest tech terms in 2021,according to a Google Trends *** review aims to describe the metaverse and NFTs in the context of their potential application in the treatment of mental health *** in technology have been changing human lives at an ever-increasing ***,also known as the threedimensional(3D)internet,is the convergence of virtual reality(VR)and physical reality in a digital *** could potentially change the internet as we know it,with NFTs as the key building blocks in the new expansive virtual *** immersive 3D virtual world boasts the features of the real world with the added ability to change the surrounding environment according to individual needs and ***,augmented reality(AR)and mixed reality(MR)have been employed as tools in the treatment of various mental health disorders for the past *** have reported positive results on their effectiveness in the diagnosis and treatment of mental health ***/AR/MR have been hailed as a solution to the acute shortage of mental health professionals and the lack of access to mental ***,on the flip side,young adults tend to spend a significant amount of time playing 3D immersive games and using social media,which can lead to insecurity,anxiety,depression,and behavioural ***,endless scrolling through social media platforms negatively affects individuals'attention span as well as aggravating the symptoms of adolescents with attention deficit hyperactivity *** aimed to explore the ramifications of expanding applications of the metaverse on mental *** far,no other review has explored the future of mental health in the context of the metaverse.

关键词： token diagnosis reality

Sinc Collocation Numerical Methods for Solving Two-Dimensional Gross-Pitaevskii Equations with Non-Homogeneous Dirichlet Boundary Conditions

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Advances in Applied Mathematics and Mechanics 2022年第6期14卷 1302-1332页

作者： Shengnan Kang Kenzu abdella Macro Pollanen Shuhua Zhang Liang Wang Coordinated Innovation Center for Computable Modeling in Management Science Tianjin University of Finance and EconomicsTianjin 300222China Department of Mathematics Trent UniversityPeterboroughOntario K9L 7B8Canada Coordinated Innovation Center for Computable Modeling in Management Science Yango UniversityFujian 350015China

This paper presents the numerical solution of the time-dependent Gross-Pitaevskii Equation describing the movement of quantum mechanics particles under non-homogeneous boundary *** to their inherent non-linearity,the equation generally can not be solved ***,a highly accurate approximation to the solutions defined in a finite domain is proposed,using the Crank-Nicolson difference method and Sinc Collocation numerical methods to discretize separately in time and *** Sinc numerical approaches,involving the Sinc Collocation Method(SCM)and the Sinc Derivative Collocation Method(SDCM),are easy to *** results demonstrate that Sinc numerical methods are highly efficient and yield accurate ***,the SDCM decays errors faster than the *** work suggests that the SDCM can be extensively applied to approximate solutions under other boundary conditions to demonstrate its broad applicability further.

关键词： Quantum mechanics spectral method time-dependent partial differential equation boundary value problem.