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A systematic review of progenitor survival and maturation in Parkinsonian models

neural Regeneration Research 2025年第11期20卷 3172-3178页

作者： giulia Comini Eilís Dowd Pharmacology&Therapeutics and galway neuroscience Center University of GalwayGalwayIreland

stem cell-based brain repair is a promising emergent therapy for Parkinson's disease based on years of foundational research using human fetal donors as a cell *** current therapeutic options for patients,this approach has the potential to provide longterm stem cell–derived reconstruction and restoration of the dopaminergic input to denervated regions of the brain allowing for restoration of certain functions to *** ultimate clinical success of stem cell–derived brain repair will depend on both the safety and efficacy of the approach and the latter is dependent on the ability of the transplanted cells to survive and differentiate into functional dopaminergic neurons in the Parkinsonian *** the pre-clinical literature suggests that there is considerable variability in survival and differentiation between studies,the aim of this systematic review was to assess these parameters in human stem cell-derived dopaminergic progenitor transplant studies in animal models of Parkinson's disease.A defined systematic search of the PubMed database was completed to identify relevant studies published up to March *** screening,76 articles were included in the analysis from which 178 separate transplant studies were *** these,graft survival could be assessed in 52 studies and differentiation in 129 ***,we found that graft survival ranged froms transplanted,with a median of 51%of transplanted cells surviving in the brain;while dopaminergic differentiation of the cells ranged from 0% to 46% of cells transplanted with a median of 3%.This systematic review suggests that there is considerable scope for improvement in the differentiation of stem cell-derived dopaminergic progenitors to maximize the therapeutic potential of this approach for patients.

关键词： cell replacement therapy differentiation embryonic stem cells graft induced pluripotent stem cells Parkinson's disease survival transplant

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Effect of bagasse ash reinforcement on the wear behaviour of Al-Cu-Mg/bagasse ash particulate composites

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Acta Metallurgica sinica(English Letters) 2010年第2期23卷 81-89页

作者： V.s. Aigbodion s.b. Hassan g.b. nyior T. Ause Department of Metallurgical and Materials Engineering Ahmadu Bello University

The effect of bagasse ash （bAp） particle reinforcement on the wear behavior of Al-Cu- Mg alloy has been studied. bagasse ash particles were varied from 0 wt pct-10 wt pct with interval of 2 wt pct. Unlubricated pin-on disc tests were conducted to examine the wear behaviour of the aluminium alloy/bagasse ash particulate composites. The tests were conducted at varying loads, from 5 to 20 n and sliding speeds of 1.26 m/s, 2.51 m/s, 3.77 m/s and 5.02 m/s for a constant sliding distance of 5000 m. The results showed that the wear rates of the A1-Cu-Mg/bAp composites are lower than that of the matrix alloy and further decrease with increasing bagasse ash content. Wear rate increases as the sliding speed and applied load increase. The microstructure of the worn surface revealed that a large amount of plastic deformation appeared on the surface of the unreinforced alloy. While bagasse ash reinforced Al-Cu-Mg alloy showed worn out surface that is not smooth, and grooves, scratches and parallel lines were observed. A combination of adhesion and delamination wear was in operation. These results show that improve wear properties is achievable for the aluminium alloy by the addition of bagasse ash particles as reinforcement material.

关键词： Al-Cu-Mg alloy bagasse ash Composites Load sliding speed and Wear

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Flux blended synthesis of novel Y2O3：Eu^3＋ sensing arrays for highly sensitive dual mode detection of LFPs on versatile surfaces

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Journal of Rare Earths 2018年第9期36卷 954-964页

作者： K.n. Venkatachalaiah H. nagabhushana R.b. basavaj g.R Darshan b. Daruka Prasad s.C. sharma Department of Physics Amrito School of Engineering Amrito Vishwa Vidyapeethom Amrita University Bengoluru 560035 India Research and Development Center Bharathiar University Coimbatore 641046 India Prof. C.n.R. Rao Centre for Advanced Material science Tumakuru University Tumakuru 572103 India Department of Physics Acharya Institute of Graduate Studies Bangalore 560107 India Department of Physics B.M.S. Institute of Technology and Management Visveswaraya Technological University affiliated Bangalore 560064 India Honorary Professor Department of Mechanical Engineering Jain University Advisor Jain Croup of Institutions Bangalore 560069 India

In the present communication,various fluxes blended Y2 O3：Eu3＋（5 mol%） nanopowders（nPs） were successfully fabricated by solution combustion *** pattern confirms body-centered cubic structure of the prepared *** band gap（Eg） of the fabricated products was estimated and is found to be in the range of 3.13-3.32 ***（PL） emission spectra exhibit sharp and intense peaks at ～579,592,614,657,704 nm corresponding to 5 D0→7 FJ（J = 0,1,2,3 and 4） transitions of Eu3＋ *** of fluxes for enhancing the PL emissions was extensively *** studies of the prepared samples are located in pure red *** nPs were explored as a novel sensing agent for visualization of latent fingerprints（LFPs） on various surfaces including porous,semiporous and non-porous surfaces followed by powder dusting *** experiments including aging,temperature,scratching and aquatic fresh water treatment tests were performed to evaluate applicability of the fabricated *** LFPs exhibit well defined ridge details including most authenticated sweat pores are also revealed with high sensitivity,selectivity,little background hindrance and less *** results evidence that the method and fabricated nPs can be considered to be simple,rapid and economical and provide novel sensing platform for LFPs visualization in prospective forensic applications.

关键词： Fluxes Photoluminescence Latent fingerprint sweat pores Forensic applications Rare earths

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Unified Treatment of screening Coulomb and Anharmonic Oscillator Potentials in Arbitrary Dimensions

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Communications in Theoretical Physics 2006年第5期45卷 807-812页

作者： blent gnl Okan zer Mehmet Kocak Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Trkiye

A mapping is obtained relating radial screened Coulomb systems with low screening parameters to radial anharmonic oscillators in n-dimensional space. Using the formalism of supersymmetric quantum mechanics, it is show... 详细信息

关键词： supersymmetric quantum mechanics screening Coulomb n-dimensional space

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Comparisons of electrical and optical properties between graphene and silicene A review

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Chinese Physics b 2018年第2期27卷 299-313页

作者： Wirth-Lima A J silva M g sombra A s b Laboratory of Telecommunications and Materials science and Engineering-www.locem.ufc.br-Fortaleza CearaBrazil Department of Physics Science CenterFederal University of Ceara(U.F C.)-FortalezaCear4Brazil state University of Vale do Acarau SobralCeardBrasil

Two-dimensional （2D） metamaterials are considered to be of enormous relevance to the progress of all exact sciences. since the discovery of graphene, researchers have increasingly investigated in depth the details of electrical/optical proper- ties pertinent to other 2D metamaterials, including those relating to the silicene. In this review are included the details and comparisons of the atomic structures, energy diagram bands, substrates, charge densities, charge mobilities, conductivities, absorptions, electrical permittivities, dispersion relations of the wave vectors, and supported electromagnetic modes related to graphene and silicene. Hence, this review can help readers to acquire, recover or increase the necessary technological basis for the development of more specific studies on graphene and silicene.

关键词： graphene silicene electrical/optical properties

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Micro-phytoplankton distribution and biomass in and around a channel-based fish farm: implications for sustainable aquaculture

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Acta Oceanologica sinica 2014年第12期33卷 180-191页

作者： sADALLY s. b nAZURALLY n TALEb-HOssEnKHAn n bHAgOOLI R Department of biosciences Faculty of Science University of Mauritius Department of Marine and Ocean science Fisheries and Mariculture Faculty of Ocean Studies

Micro-phytoplankton density, genera composition, chlorophyllaconcentration, and physico-chemical pa-rameters were investigated at five stations （s1-near the coast; s2 and s4-at the edges of the aquaculture set-up; s3-in the center of the set-up; and s5-nearby patch of corals） in and around a coastal channel-based fish farm. The highest total micro-phytoplankton density （TPD）, including diatoms, dinoflagellates and cyanobacteria, was recorded at s3 （（6.28±2.00）×10^6 cells/L） followed by s4 （（5.87±2.81）×10^5 cells/L）, s1 （（4.92×10^5±8.70×10^4） cells/L）, s5 （（3.54×10^5±5.33×10^4） cells/L） and s2 （（2.60±1.14）×10^5cells/L）. Chlorophyll a and nutrient concentrations were highest at s3 and were positively correlated with TPD. Among the 35 genera documented in this study,Chaetoceros spp. was the dominant diatom whilePeridinium spp. was the most dominant dinoflagellate. Very low densities of toxic bloom-forming dinoflagellates were encountered during this study. These results suggest that occurrence of non-bloom densities of micro-phytoplankton, possibly due to the natural flushing of the existing lagoonal channel at the aquaculture site, yielded in little environmental impact and can represent an appropriate sustainable approach for future aquaculture de-velopment.

关键词： chlorophyll a micro-phytoplankton physico-chemical parameters sustainable aquaculture

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Estimation of radiative capture^(13)b(n,γ0+1)^(14)b reaction rate in the modified potential cluster model

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Chinese Physics C 2023年第10期47卷 130-142页

作者： A.s.Tkachenko n.A.burkova b.M.Yeleusheva s.b.Dubovichenko Fesenkov Astrophysical Institute 050020AlmatyKazakhstan al-Farabi Kazakh national University 050040AlmatyKazakhstan

We discuss current attempts to employ the modified potential cluster model to describe the available experimental data on the^(13)b(n,γ0+1)^(14)b total *** estimated results of the M1 and E1 transitions from the n^(13)b scattering states to the ground and first excited states of^(14)b are *** 1st resonance at Ex=1.275 MeV(1+)is revealed in both the cross-section and reaction *** the variation in the asymptotic constant,a thermal cross-section interval of 5.1-8.9 mb is *** on the theoretical total cross-sections at energies of 0.01 eV to 5 MeV,we calculate the reaction rate in the temperature range of 0.01 to *** ignition T9 values of the^(13)b(n,γ0+1)^(14)b reaction depending on a neutron number density n_(n)of~10^(22)cm^(−3)are *** radiative neutron capture reaction rates on the boron^(10-13)b and carbon^(12-14)Сisotopes are compared.

关键词： radiative neutron capture ^(14)b nucleus total cross-sections reaction rate potential cluster model r-process

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Farmers'participatory selection of new rice varieties to boost production under temperate agro-ecosystems

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Journal of Integrative Agriculture 2018年第6期17卷 1307-1314页

作者： s najeeb F A sheikh g A Parray A b shikari g zaffar s C Kashyp M A ganie A b shah Mountain Research Centre for Field Crops KhudwaniAnantnagSher-e-Kashmir University of Agricultural Sciences&Technology of KashmirJammu&Kashmir 192102India Centre for biotechnology Sher-e-Kashmir University of Agricultural Sciences&Technology of KashmirShafimarJammu&Kashmir 191121India Dryland Agriculture Research station Sher-e-Kashmir University of Agricultural Sciences&Technology of KashmirSrinagarJammu&Kashmir 191111India Assistant Director Education Sher-e-Kashmir University of Agricultural Sciences&Technology of JammuChattaJammu&Kashmir 180009India

In mountain agriculture, early maturity, high grain yield and high biomass are generally considered as farmer preferred traits in rice crop in addition to a multiple set of traits collectively responsible for variety adoption or rejection. The varieties tested only on station evaluation trials without taking the data from the farmers＇ fields by not including farmers as partners for variety evaluation are the reasons of low adoption of varieties. In this regard, a participatory methodology was followed by conducting a number of participatory trials in the farmers＇ fields during 2012-2014 in six districts of Kashmir Valley, India. The mother trials in the farmers＇ fields showed that the test variety sKUA-408 consistently and significantly out yielded Jhelum and farmers＇ variety followed by shalimar rice 3 （sR3）. The other released varieties like sR1 and sR2 could not perform nicely in the farmers＇ fields because of late maturity. After making the t-test comparison of baby trials （paired plots）, the mean yield superiority of test varieties sKUA-408, sR3, and sKUA-403 over farmers＇ variety during 2013 was around 23, 25, and 22％, respectively, whereas in 2014 the respective yield advantage was recorded as 16.3, 17.7, and 16.2％. In all districts, sKUA-408 and sR3 were significantly preferred by farmers （P〈0.05 or 0.01） in terms of pre-harvest traits namely, tillering ability and general phenotypic acceptability, early maturity and biomass and for post-harvest traits such as general cooking quality besides, the intention to grow the variety for next year. Adoption and dissemination of sKUA-408 began in 2014 from the farm-saved seed in the form of farmer to farmer seed exchange. Farmers are the end users of a variety so the decision by the farmers while judging the variety should be taken into consideration to make the varietal choice more effective for its widespread adoption.

关键词： baby trials farmers' perception farmer preferred traits mother trials mountain agriculture participatory varietal selection variety adoption and popularization

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Consequence of exponential heat generation on non-Darcy- Forchheimer flow of water based carbon nanotubes driven by a curved stretching sheet

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Applied Mathematics and Mechanics(English Edition) 2020年第11期41卷 1723-1734页

作者： b.J.gIREEsHA b.nAgARAJA s.sInDHU g.sOWMYA Department of P.g.studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India

The present article comprises the study on the influence of exponential space based heat generation on the non-Darcy-Forchheimer flow of carbon nanotubes(CnTs).The flow is considered over a curved stretching *** variables are used to reduce the flow descriptive nonlinear partial derivative equations to simple *** equations are then solved by the exploiting Runge-Kutta-Fehlberg fourth-and fifth-order *** numerical solutions are shown in graphs and *** between single and multi-walled CnTs has been established through the tabulated values and plotted *** is concluded that the heat source parameter plays a prime role in enhancement of temperature,and the curvature parameter has adverse impact on velocity and temperature *** the inertial parameter and inverse-Darcy number affect the fluid velocity.

关键词： exponential heat generation non-Darcy-Forchheimer flow carbon nanotube(CnT) curved stretching sheet

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Radiative^(9)be(n,γ0+1+2+3+4+5)^(10)be reaction rate in the potential cluster model

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Chinese Physics C 2023年第8期47卷 81-94页

作者： s.b.Dubovichenko b.M.Yeleusheva n.A.burkova A.s.Tkachenko Fesenkov Astrophysical Institute 050020 AlmatyKazakhstan Al-Farabi Kazakh national University 050040 AlmatyKazakhstan

Within the framework of the modified potential cluster model with forbidden states,the total cross-sections of radiative n^(9)be capture to the ground and five low-lying excited states are calculated at energies from 10^(-2)eV up to 5 *** thermal cross-section σ_(th)=8.35mb is in good agreement with experimental *** considered five resonances at the excitation energies E_(x)from 7.371 MeV up to 10.570 MeV corresponding to the following states with J^(π)(E_(x),MeV):3^(-)(7.371),2^(+)(7.542),3^(+)(9.4),2^(+)(9.56),and 3^(-)(10.570).The partial and total ^(9)be(n,γ0+1+2+3+4+5)^(10)be reaction rates are calculated at temperatures from 0.001 to 10 T_(9).Contrary to the available data,we propose that the rise in the reaction rate near factor five at T_(9)>1 is mainly due to the first 3^(-)(E_(R)=0.559 MeV)*** foresee this contrast as arising from different model approaches.

关键词： n^(9)be system total cross-sections thermonuclear capture rate cluster model nuclear astrophysics thermal and astrophysical energies.

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