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Earth, a blue planet in the Solar System, is the only home of human beings. Frequently we consume resources excessively on the Earth. However, if the Earth were driven away from the Solar System, where could we go? There was a film about the dilemma: The Wandering Earth.
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Potential of green hydrogen producing from biomass, solar and wind in Togo has been performed. The availability of these three resources has been depicted with maps showing them per cantons in Togo, thus, by using the datasets from ESA Biomass Climate Change Initiative, the global solar atlas and the global wind atlas. The conversions rates used were: for solar resource, 3% of land was allocated for the analysis after removing the exclusions with a conversion rate of 52.5 kWh/kg of hydrogen;for biomass hydrogen, the conversion rate of 13.4 kg BS/kg H2 was assumed. Wind resources at 50 m above ground were not sufficient to evaluate the potential as it is lower than class 3 winds. QGIS version 3.6.4 and R version 4.0.4 were used. Results showed that biomass is the leading resource for producing green hydrogen from renewable energy resources;with good impact in these two cantons: Bassar, Gobe/ Eketo/Gbadi N’Kugna. However, this resource is still decreasing and in some cantons it is null.
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In March 2021,Australia’s Great Barrier Reef played host to a rare field test of marine cloud brightening(MCB)technology.Blasting a seawater mist into the air from the aft of a research ves-sel using a turbine outfitted with novel spray nozzles,researchers watched the resulting white plume rise into the sky(Fig.1)[1].Over the last five years,the Reef has suffered multiple mass bleaching events because of ocean warming caused by climate change[2].The MCB project,led by senior lecturer Daniel Harrison of Southern Cross University,Coffs Harbour,Australia,is part of the Reef Restoration and Adaptation Program[3],a government-backed research and development initiative that aims to“develop,test and risk-assess novel interventions to help keep the Reef resilient.”
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Sino-European Joint Space Mission Conducts Magnetometer Extension Test,A China-Europe joint space mission,Solar Wind Magnetosphere Ionosphere Link Explorer(SMILE),has successfully carried out the extension test of its payload magnetometer in Europe in late February.The test shows that the function and performance of the magnetometer subsystem integrated with the payload module meet the mission requirements.Researchers from China and Europe have also reached an agreement on the development specifications,technical process,test methods,and evaluation standards.
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China's First Solar Exploration Satellite Makes Progress China's first solar exploration satellite has observed nearly 100solar eruptions and completed its in-orbit tests and experiments,said the China National Space Administration (CNSA) at a press conference on August 30.The scientific data from the satellite's observations have been officially released and shared with the world,said Zhao Jian,chief designer of the country's Gaofen project,at the press conference on the satellite's progress.
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To avoid negative consequences to freshwater biota from climate change,society must complete the transition from fossil to renewable electricity sources.However,temporal patterns in hydropower generation(and flow releases that affect aquatic biota)may change with increased wind and solar penetration.We used power cost modeling to characterize current and future within-day and seasonal patterns in hydropower generation across the Eastern Interconnection in a wet and a dry year.Compared to the baseline,future hydropower generation across the grid decreased during the day and increased before dawn and after dusk.At a project level,such a pattern would suggest‘double peaking’operation(up-and down-ramping before dawn and after dusk,with lower releases midday).Variation in generation was higher in wet years than dry years,foreshadowing possible flow constraints on hydropower flexibility.At the grid scale,projected ramping rates were higher in all seasons.A review of the ecological literature suggests that these changes would shift the timing of invertebrate drift and elevate the risk of nest scouring during up-ramping and the risk of stranding or dewatering during down ramping.Thermal conditions may be moderated by increased ramping.Strategies for adapting to future shifts in the renewable portfolio range from re-regulation in reservoir cascades to providing flow refuge(structures and vegetation)below individual projects.Coordinated basin-scale operation can distribute peaking operation to maintain grid support while restricting local ramping at critical ecological times.In addition,research to design hybrid renewable systems that add battery storage is needed to understand how we can mitigate future risks to aquatic communities while promoting the use of renewable energy.This study,which is among the first to examine ecological side-effects of the shift to renewable energy in freshwater ecosystems,lays out a path toward understanding and navigating changes to flow regimes under the energy transition.
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As a result of an error by the authors,in the paper"The Lyman-alpha Solar Telescope(LST)for the ASO-S Mission.I.Scientific Objectives and Overview"by Hui Li et al.(RAA 2019 Vol.19,No.11,158,doi:10.1088/1674C4527/19/11/158),there is an error occurred in Table 2 about the image size of SCI UV in the''Event''mode:the image size 4608×4608 should be replaced by 2048×2048.This correction is indicated in bold face in the following table.
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In Mongolia,the numbers of herders who own more than 1,000 herds have been increasing year by year.Some of the herder families are operating small agricultural factories as well.The appropriate power supply systems are not being developed yet in their farms.At the farms,mostly 4-10 herder families work together and the monthly power consumption of one farm reaches to 11.8-14.9 kWh.Currently,the gasoline,diesel,solar and wind power are being used as a source of energy production.In addition,the small-scale CHP(Combined Heat and Power)system is not introduced to the farms for their sustainable operation.There are abundant biomass resources in the rural area of Mongolia.In this paper,we conduct experimental studies on biomass gasification system and suggest small-scale CHP system for rural farms in Mongolia.
摘要:
之前我們了解了一些常規(guī)和傳統(tǒng)的發(fā)電廠類型,接下來(lái)的文章就帶你走進(jìn)靠太陽(yáng)能(光伏)、風(fēng)力與潮汐發(fā)電的電廠。Solar energy plants convert energy from the sun into thermal or electrical energy using one of the cleanest and most 1] abundant renewable energy sources.They generally do not require high maintenance and last for about 20 to 25 years.
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最近,中國(guó)科學(xué)院上海高等研究院研究員李東棟、副研究員魯林峰等人在ACS Applied Materials&Interfaces上,發(fā)表了題為Interfacial Engineering of Cu_(2)O Passivating Contact for Efficient Crystalline Silicon Solar Cells with an Al_(2)O_(3) Passivation Layer的研究成果。