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Tilted global solar irradiance in Bahrain:an experimental study

clean Energy 2024年第2期8卷 27-34页

作者： N.Vasilikos c.Georgantopoulou H.Alajaimi S.H.Almajed M.Ahmed d.Mathioulakis School of Mechanical Engineering Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain School of Mechanical Engineering National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In the present work,tilted global solar irradiance data are presented and analysed,measured for a period of 1 year on the campus of Bahrain Polytechnic,Kingdom of Bahrain,from both a fixed photovoltaic panel and a moving one via a two-axis solar *** fixed panel faces south with an angle of 26°with respect to the horizontal,coinciding with the local geographical *** second panel is moved by two motors,controlled by a global positioning system and suitable software so that the Sun’s rays are perpendicular to the panel surface.A pyranometer is installed on each panel,recording the tilted global solar irradiance,stored by using a data *** analysis of the data obtained shows a 33%solar energy gain on an annual basis for the moving panel(2780 versus 2088 kWh/m^(2) on the fixed panel).More importantly,in June,when the energy demand in Bahrain is elevated due to the increased residential cooling loads,the solar energy received by the moving panel is 54.7%higher compared with that of the fixed *** a percentage basis,the increase in solar energy from the moving panel is profound in the early morning and late evening ***,the reduction in the solar energy received by the fixed panel from May to June does not appear in the moving panel because of the adjustable orientation of the *** the year,the mean daily solar power varies between 0.37 and 0.56 kW/m^(2) for the fixed panel,and 0.45 and 0.70 kW/m^(2) for the moving *** winter,solar energy fluctuations are elevated due to erratic weather conditions that present a peak standard deviation of 28%of the corresponding *** data presented are useful for potential solar investments in Gulf countries.

关键词： tilted solar irradiance renewable energy solar tracking photovoltaic Gulf cooperation council countries

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Assessing the biennial conference on science and technology(BIcOST IX)2023 technical output on renewable energy,energy storage,and green hydrogen in line with UN SdG commitments

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clean Energy 2024年第2期8卷 85-88页

作者： S.K.B.d.Silva K.G.d.Piyumali Rasitha Thilini Suranjana Perera K.d.K.G.Kaluarachchi Thilini Munagamage R.M.R.Ahammed c.S.P.Piyankarage Seyed Shahmy Veranja Karunaratne National Science and Technology commission of Sri Lanka ColomboSri Lanka Sri Lanka Technological campus(SLTc) PadukkaSri Lanka University of Peradeniya PeradeniyaSri Lanka

The development,production and utilization of renewable energy,energy storage and green hydrogen and the associated technologies in Sri Lanka have great potential to contribute to the United Nations’Sustainable development Goals(SdGs).The island aims to achieve 70%electricity generation from renewable energy sources by 2030(within the target of 40%utilization of renewable energy sources for the entire energy generation of the country by 2030).The power sector has to invest US$11 billion from 2023 to 2030 to contribute to reaching this *** commentary aims to provide a critical perspective on the recommendations of the report from the National Science and Technology commission’s 9th biennial conference in 2023 on science and technology,the sub-thematic technical report on clean energy,energy storage and green hydrogen in line with the SdGs in the Sri Lankan *** technical report provides insightful recommendations for Sri Lanka’s energy sector under three main sections:renewable energy,energy storage and green ***,it explores the potential of various renewable energy sources,energy storage systems and green hydrogen as sustainable solutions to address the country’s energy challenges while emphasizing the spillover effects of them,which could contribute to the enterprise’s job creation and uplift the economy.

关键词： renewable energy energy storage green hydrogen sustainable development goals Sri Lanka social economic environmental sustainable affordable

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亚里士多德的善和恶

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世界哲学 2024年第2期 68-78页

作者： [爱尔兰]c.d.c.里夫孔祥润(译) 美国北卡罗来纳大学教堂山分校哲学系天津理工大学马克思主义学院

亚里士多德确实有一种关于恶的理论。善在定义上优先于恶,这是由善所需要的本体论边界决定的。如果善实际上就是卓越的存在,那么恶必定是这种存在的缺乏。在实体范畴中,亚里士多德的善是一种活的存在,在对自身的沉思中,第一性的神获得... 详细信息

亚里士多德确实有一种关于恶的理论。善在定义上优先于恶,这是由善所需要的本体论边界决定的。如果善实际上就是卓越的存在,那么恶必定是这种存在的缺乏。在实体范畴中,亚里士多德的善是一种活的存在,在对自身的沉思中,第一性的神获得了善并且是幸福的。由此类推,如果存在一种实体范畴上的恶,那么它必定是一种能对自身加以沉思的活的存在。然而在亚里士多德勾勒的事物体系中,这种观念是无法实现的。亚里士多德的善的理论排除了把一种恶(即实体性的巨大的恶)等同于善的可能性。这种理论认真对待伦理上的恶,把它当作心理学、政治学问题,而不是当作本体论问题。无条件的恶说的不是理性的神灵,而是心理变态之人或反社会之人,说的是一位恶人,尽管这个人处在一种特定的社会,即良好的社会之中。

关键词：亚里士多德善恶幸福

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Effect of Moringa oleifera on semen quality profiles in endangered Teressa goat under tropical humid island ecosystem

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Asian pacific Journal of Reproduction 2024年第2期13卷 89-96页

作者： P.Perumal Jai Sunder A.K.de A.K.Nahak d.K.chaurasia T.c.Balamurugan d.Bhattacharya IcAR-central Island Agricultural Research Institute Port Blair-744105Andaman and Nicobar IslandsIndia OUAT-college of Veterinary Science and Animal Husbandry Bhubaneswar-751003OdishaIndia TANUVAS-Veterinary college and Research Institute Salem-636112Tamil NaduIndia

Objective:To investigate the effect of Moringa oleifera leaf extract on semen quality parameters in Teressa goat ***:A total of 25 semen samples from six bucks were selected for the *** of 150×10^(6) were incubated in 0,300,500 and 700μg of leaf extract as groupⅠ,Ⅱ,Ⅲ and Ⅳ,*** stored semen samples were analysed for motility,viability,total sperm abnormalities,plasma membrane,acrosomal and nuclear integrities,seminal plasma intracellular enzymes[aspartate aminotransferase(AST),alanine aminotransferase(ALT)and lactate dehydrogenase(LdH)]and total antioxidant capacity(TAc)and spermatozoa malondialdehyde(MdA)and cholesterol efflux in comparison with the control group(groupⅠ)for up to 72 ***:Moringa oleifera leaf extract(500μg/150×10^(6) spermatozoa)-treated semen had significantly higher motility,viability,plasma membrane,acrosomal and nuclear integrities,and TAc(Pd had significantly lower total sperm abnormalities,AST,ALT,LdH,MdA production and cholesterol efflux compared to those in other Moringa oleifera leaf extract treated(300 or 700μg/150×10^(6) spermatozoa)and control groups at different hours of liquid storage(Pd TAc showed an increasing trend and total sperm abnormalities,MdA production,leakage of intra-cellular enzymes and cholesterol efflux showed a decreasing trend from group Ⅰto group Ⅲand then an opposite trend from group Ⅲ to group Ⅳ at different hours of liquid ***:Moringa oleifera leaf extract 500μg/150×10^(6) spermatozoa can be used for liquid semen preservation in Teressa goat at Andaman and Nicobar Islands.

关键词： Moringa oleifera Semen Teressa goat Andaman and Nicobar Islands

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discovery of new MAX-phase-like layered ternary carbide V_(8)P_(6)c:crystal structure,thermal expansion,and elastic properties

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Journal of Materials Science & Technology 2024年第7期174卷 55-62页

作者： H.X.chen L.Sheng Z.L.Zhang X.c.Wen d.L.Yang X.Y.Ye P.Q.dai School of Materials Science and Engineering Fujian University of TechnologyFuzhou 350118China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China Fujian Provincial Key Laboratory of Advanced Materials Processing and Application Fuzhou 350118China State Key Laboratory of Structural chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

due to the laminated structure,MAX phases and MAX-phase-like compounds possess outstanding dam-age tolerance capability with good thermal/electrical conductivity and other charming functional prop-erties,showing a bright future for structural-functional ***,a new MAX-phase-like ternary car-bide V_(8)P_(6)c with layered characteristics was *** to the alternate stacking of hexagonal-arranged M/A/X atom layers in MAX phases,V_(8)P_(6)c has a layered structure formed by a repeated stacking of the slabs consisting of V_(6)c-octahedrons and VP 6-distorted-octahedrons in three-atomic layers *** thermal expansion anisotropy was revealed,with the thermal expansion coefficients(TEcs)along a-axis,c-axis,and the average value,equal toα_(a)=8.55(5)μK^(−1),α_(c)=10.23(5)μK^(−1),andα_(L)=9.14(5)μK^(−1),*** dilation along the c-axis was mainly dominated by out-plane V-P bonds be-tween layered *** to the pressure-dependent lattice parameters,the polycrystalline bulk modulus(B_(0)=185(9)GPa)and high compressibility anisotropy factor(B_(a)/B_(c)=1.64)was ***-while,the second-order elastic constants were calculated,and the elastic moduli,E=303 GPa,B=198 GPa,G=122 GPa,andν=0.246,were *** the weak connection between layer slabs by out-plane V1-P bond was revealed by the bond stiffness model,with a bond stiffness close to the M-A bond in MAX ***,good damage tolerance capability was predicted according to Paugh’s ratio(G/B=0.616)and cauchy pressure(P_(a)=0 GPa,P_(c)=-7.5 GPa),even better than those of typical MAX *** discovery of V_(8)P_(6)c provides a new member of MAX-phase-like damage-tolerant ceramic with relatively low density,moderate thermal expansion,and anisotropic compressibility,and the unique lay-ered structure is inspiring for exploring new layered ternary ceramics.

关键词： New ternary carbide MAX phase Thermal expansion Elastic constants Anisotropy

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The association of physical activity duration and intensity on emotional intelligence in 10-13 year-old children

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Sports Medicine and Health Science 2024年第4期6卷 331-337页

作者： Marie c.Gabour Tongjian You Richard Fleming Paul d.McNicholas Philimon N.Gona department of Health Sciences Regis College235 Wellesley StreetWestonMA02493USA department of Exercise and Health Sciences University of Massachusetts Boston100 Morrissey BlvdBostonMA02125USA department of Mathematics&Statistics McMaster UniversityHamiltonOntarioCanada L8S 4L8

Previous studies have shown that Physical Activity(PA)has a positive association with emotional health and intelligence in adolescents but none have focused on the relationship of PA duration and intensity on Emotional Intelligence(EI).The purpose of this study was to cross-sectionally assess the association of PA measures on overall EI and its domains in a cohort of 2029 adolescents aged 10-13 years of age in the National Longitudinal Survey for children and Youth(NLScY)from *** linear regression analysis of EI was adjusted for age,sex,annual household income,and health ***-way analysis of variance(ANOVA)was used to relate PA duration measured in minutes,frequency,and intensity categories with continuous GEI scores and also the corresponding scores for domains of *** mean GEI scores were(28.3±6.6)for 0-30 minute(min)PA duration,(30.0±6.5)for 30 tod(30.1±6.5)for≥121 *** was a statistically significant linear trend across PA duration categories,p?***-hoc pairwise comparison revealed that compared to the referent category(category)was statistically significantly lower GEI than each of the other two PA categories(30-59 min;and 60-120 min),both p-valuesd Health Organization(WHO)guidelines for duration and vigorous intensity were positively associated with the higher overall EI and its domains except for Stress Management.

关键词： Physical activity duration Intensity Emotional Intelligence Adolescents

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Role of lipids in the control of autophagy and primary cilium signaling in neurons

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Neural Regeneration Research 2024年第2期19卷 264-271页

作者： María Paz Hernández-cáceres d.niela Pinto-Nuñez Patricia Rivera Paulina Burgos Francisco díaz-castro Alfredo criollo Maria Jose Yañez Eugenia Morselli Instituto de Investigación en ciencias Odontológicas(IcOd) Facultad de OdontologíaUniversidad de ChileSantiagoChile department of Basic Sciences Faculty of Medicine and ScienceUniversidad San SebastiánSantiagoChile Physiology department Faculty of Biological SciencesPontificia Universidad Católica de ChileSantiagoChile Advanced center for chronic diseases(AccdiS) Facultad de Ciencias Químicas y Farmacéuticas&Facultad de MedicinaUniversidad de ChileSantiagoChile Autophagy Research center SantiagoChile

The brain is,after the adipose tissue,the organ with the greatest amount of lipids and diversity in their composition in the human *** neurons,lipids are involved in signaling pathways controlling autophagy,a lysosome-dependent catabolic process essential for the maintenance of neuronal homeostasis and the function of the primary cilium,a cellular antenna that acts as a communication hub that transfers extracellular signals into intracellular responses required for neurogenesis and brain development.A crosstalk between primary cilia and autophagy has been established;however,its role in the control of neuronal activity and homeostasis is barely *** this review,we briefly discuss the current knowledge regarding the role of autophagy and the primary cilium in *** we review the recent literature about specific lipid subclasses in the regulation of autophagy,in the control of primary cilium structure and its dependent cellular signaling in physiological and pathological conditions,specifically focusing on neurons,an area of research that could have major implications in neurodevelopment,energy homeostasis,and neurodegeneration.

关键词： autophagic flux cholesterol fatty acids GPcR lysosomal storage diseases neurons NPc1 phosphoinositides primary cilium

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Quantitative Mapping of Transient Thermodynamic States in Ultrafast Laser Nanostructuring of Quartz

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Ultrafast Science 2024年第2期4卷 9-18页

作者： H.d.Nguyen A.Tsaturyan S.Sao Joao R.dwivedi A.Melkonyan c.d’Amico E.Kachan J.P.colombier G.Kermouche R.Stoian Laboratoire Hubert curien UMR 5516 CNRSUniversite Jean Monnet42000 Saint EtienneFrance Laboratoire George Friedel UMR 5307 CNRSEcole des Mines de Saint Etienne42000 Saint EtienneFrance

Understanding material structural reaction to light is of utmost importance to advance processing resolution in ultrafast laser volume structuring into the *** thermodynamic pathways are required to quench energy transport in the most rapid manner and to confine the process to nanometer lengths,bypassing optical *** material dynamics under confinement,with in situ access to transient local temperature and density parameters,thus becomes key in understanding the *** report in situ reconstruction of thermodynamic states over the entire matter relaxation path in bulkα-quartz irradiated by ultrafast nondiffractive laser beams using time-resolved qualitative and quantitative optical phase *** dynamics indicate rapid spatially confined crystalline-to-amorphous transition to a hot dense fused silica *** exceeds 20%and the matrix temperature rises to more than 2,000 K in the first *** structural state relaxes in hundreds of *** dispersion and time design of the optical beam to picosecond durations increases the spatial confinement and triggers an extreme nanostructuring process based on nanocavitation that occurs within the amorphizing material,where the low-viscosity phase lowers the mechanical requirements for the *** feature scales of less than a tenth of the optical wavelength are obtained in the *** allows for structural and morphological nanoscale material features under 3d confinement that can engineer optical materials.

关键词： Quartz hundreds qualitative

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A brief history of the compendium of Physical Activities

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Journal of Sport and Health Science 2024年第1期13卷 3-5页

作者： Barbara E.Ainsworth Stephen d.Herrmann david R.Jacobs Jr. Melicia c.Whitt-Glover catrine Tudor-Locke School of Exercise and Health Shanghai University of SportShanghai 200438China college of Health Solutions Arizona State UniversityPhoenixAZ 85003USA Kansas center for Metabolism and Obesity Research University of Kansas Medical CenterKansas CityKS 66160USA division of Epidemiology and community Health University of MinnesotaMinneapolisMN 55455USA Gramercy Research Group KnightdaleNC 27545USA college of Health and Human Services University of North Carolina at CharlotteCharlotteNC 28223USA

The compendium of Physical Activities(compendium)was developed to address consistent assignment of physical activity(PA)intensity values used in PA epidemiology research of the association between PA and health outcomes.1The known protective effects of PA on incident health outcomes traces to the mid-1900s,with over 50 studies examining coronary heart disease(cHd)as the outcome of interest.

关键词： epidemiology Activities protective

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Important step towards an understanding of the exotic Z_(c)(3900)

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Science china(Physics,Mechanics & Astronomy) 2024年第9期67卷 199-200页

作者： c.Hanhart Institute for Advanced Simulation Forschungszentrum JulichJilich D-52425Germany

The Standard Model of particle physics,which contains the field theories for the electro-weak interaction(QEd)and the strong interaction(Qcd),is an extremely successful theory describing a huge variety of phenomena at... 详细信息

关键词： interaction atomic describing

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