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Developing a web-based spatial decision support system for geothermal exploration at the Olkaria geothermal field

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International Journal of Digital Earth 2017年第11期10卷 1118-1145页

作者： daniel.Mwaur Martin Kad Institute of Geodesy and Geoinformation Science Technische Universität BerlinBerlinGermany

Geothermal exploration is a complex process that spans a number of *** a decision is made to drill a geothermal well,there is need for an extensive exploration process to determine the most suitable *** process of evaluating and analyzing data from individual scientific disciplines can be complex and *** have been made at solving this problem using GIS-based tools but the uptake of these tools is often hindered by the limited knowledge of GIS by decision *** paper presents an approach for solving the geothermal exploration question through a web-based spatial decision support system(SDSS)that incorporates the various geosciences through a multi-criteria spatial decision analysis *** results reveal a decision-making gap that is to be filled using a novel,automated exploration *** approach hypothesizes an easier and faster decision-making *** research focuses on Olkaria,an active geothermal area in Kenya,East Africa and highlights a pragmatic approach to identifying priority areas for *** evaluates contributions made by many disciplines in identifying potential sites ideal for harnessing geothermal energy and the gaps that emerge in an effort to synergize the results from the different disciplines.

关键词： GIS SDSS geothermal web based multi-criteria decision analysis

Plant-microbial fuel cell for electrical generation through living plants: an internal resistance insight into the plant species used

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Clean Energy 2024年第5期8卷 45-53页

作者： Raymond daniel.Rodriguez Martinez Department of Industrial Production Faculty of EngineeringUniversidad Metropolitana1073 CaracasVenezuela

Climate change is a global threat,the presence of which has encouraged the development and implementation of renewable energies,including plant–microbial fuel cells,which could generate 6629568–33147840 MWh per year due to their large-scale *** of the main challenges associated with microbial cells is internal resistance—a parameter whose magnitude is influenced by sev-eral *** the case of plant–microbial fuel cells,adding a plant positively affects the mitigation of internal ***,the species employed is expected to play an important *** the present study,the objective was to determine as a general reference the internal resistance of cells using various plant species,among which were tomato(Solanum lycopersicum),black beans(Phaseolus vulgaris),aloe vera(Aloe vera),corn(Zea mays),and moss(Dicranidae).For this purpose,an experimental procedure was carried out to compare the manual voltage measurements with a free cell concerning the voltage obtained by adding an external resistor in *** internal resistance values were determined as a function of the measured voltage,obtaining 177,179,175,324,and 233 kΩfor aloe vera,corn,tomato,black beans,and moss,*** this,it was shown that the roots of the plants represent an essen-tial addition to the internal resistance of the cell in the short *** contrast,plants with a C4 photosynthetic metabolism are more favourable,while C3 plants can also benefit from internal resistance during a more extended period of rhizodeposition.

关键词： climate change energy microorganism renewable source voltage

Exploiting Caenorhabditis elegans to discover human gut microbiota-mediated intervention strategies in protein conformational diseases

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Neural Regeneration Research 2022年第10期17卷 2203-2204页

作者： daniel.M.Czyż Department of Microbiology and Cell Science University of FloridaGainesvilleFLUSA

Age-dependent protein-conformational diseases(PCDs),such as Alzheimer’s disease(AD),Parkinson’s disease(PD),or amyotrophic lateral sclerosis(ALS),are characterized by misfolding and aggregation of metastable proteins present within the proteome of the affected *** evidence supports the notion that bacteria and bacterial products may be affecting the stability of these culprit host proteins and therefore influence disease progression and perhaps even its *** specific culprit proteins are associated with each disease(e.g.,Aβin AD,α-synuclein in PD,and TDP-43 in ALS),bacteria found to affect these diseases do not seem to differentiate between these specific proteins but likely affect host proteostasis in general,leading to misfolding of metastable proteins encoded within the *** evidence that supports this hypothesis comes from studies where a single bacterial genus was linked to multiple *** example,a decrease in Prevotella *** linked to constipation,a condition that precedes PD motor symptoms by as much as 20 or more years(Savica et al.,2009;Zhu et al.,2014).

关键词： diseases Alzheimer folding

Laser cut hole matrices in novel armour plate steel for appliqué battlefield vehicle protection

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Defence Technology（防务技术） 2016年第5期12卷 351-359页

作者： daniel.J. THOMAS Engineering Manufacturing Centre College of Engineering Swansea University Swansea UK

During this research, experimental rolled homogeneous armour steel was cast, annealed and laser cut to form an appliqué plate. This Martensitic–Bainitic microstructure steel grade was used to test a novel means of engineering lightweight armour. It was determined that a laser cutting speed of 1200 mm/min produced optimum hole formations with limited distortion. The array of holes acts as a double-edged solution, in that they provide weight saving of 45%, providing a protective advantage and increasing the surface area. Data collected were used to generate laser cut-edge hole projections in order to identify the optimum cutting speed, edge condition, cost and deformation performance. These parameters resulted in the generation of a surface, with less stress raising features. This can result in a distribution of stress across the wider surface. Provided that appropriate process parameters are used to generate laser cut edges, then the hardness properties of the surface can be controlled. This is due to compressive residual stresses produced in the near edge region as a result of metallurgical transformations. This way the traverse cutting speed parameter can be adjusted to alter critical surface characteristics and microstructural properties in close proximity to the cut-edge. A relationship was identified between the width of the laser HAZ and the hardness of the cut edge. It is the thickness of the HAZ that is affected by the laser process parameters which can be manipulated with adjusting the traverse cutting speed.

关键词： Armour steels Defence systems Steel processing Armour engineering

Effects of underground explosions on soil and structures

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Underground Space 2020年第4期5卷 324-338页

作者： daniel.Ambrosini Bibiana Luccioni National University of Cuyo CONICETArgentina National University of Tucuman CONICETArgentina

Much effort has been dedicated to the study of underground explosions because they pose a major threat to people and structures below or above the *** this regard,it is especially important to model the propagation of blast waves in soil and their effects on *** main phenomena caused by underground explosive detonation that must be addressed are crater or camouflet formation,shock wave and elastic–plastic wave propagation in soil,and soil-structure *** phenomena can be numerically simulated using hydrocodes,but much care must be taken to obtain reliable *** objective of this study is to analyze the ability of a hydrocode and simple soil models that do not require much calibration to approximately reproduce experimental and empirical results related to different buried blast events and to provide general guidelines for the simulation of this type of *** this regard,crater formation,soil ejecta,blast wave propagation in soil,and their effects on structures below and above the ground are numerically simulated using different soil models and parameters;the results are *** properties of soil have a significant effect on structures,the ejecta,and the propagation of shock waves in ***,the model of the soil to study these phenomena must be carefully *** their effect on the diameter of a crater is insignificant.

关键词： Shock waves Underground explosions Soils Hydrocodes

Using hierarchical spatial models to assess the occurrence of an island endemism: the case of Salamandra corsica

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Ecological Processes 2019年第1期8卷 199-209页

作者： daniel.Escoriza Axel Hernandez GRECO Institute of Aquatic EcologyUniversity of Girona17071 GironaSpain Department of Environmental Sciences University Pasquale Paoli20250 CorteFrance.

Background:Island species are vulnerable to rapid extinction,so it is important to develop accurate methods to determine their occurrence and habitat *** this study,we assessed two methods for modeling the occurrence of the Corsican endemic Salamandra corsica,based on macro-ecological and fine habitat *** expected that models based on habitat descriptors would better estimate *** occurrence,because its distribution could be influenced by micro-environmental *** occurrence of *** was modeled according to two ensembles of variables using random ***:Salamandra corsica was mainly found in forested habitats,with a complex vertical *** habitats are associated with more stable environmental *** model based on fine habitat descriptors was better able to predict occurrence,and gave no false *** model based on macro-ecological variables underestimated the occurrence of the species on its ecological boundary,which is important as such locations may facilitate interpopulation ***:Implementing fine spatial resolution models requires greater investment of resources,but this is advisable for study of microendemic species,where it is important to reduce type II error(false negatives).

关键词： Amphibian Corsica Mediterranean islands Microhabitat Salamander

Buffered microclimate determines the presence of Salamandra corsica

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Journal of Forestry Research 2021年第3期32卷 1089-1093页

作者： daniel.Escoriza Axel Hernandez GRECO Institute of Aquatic EcologyUniversity of Girona17071 GironaSpain Department of Environmental Sciences University Pasquale Paoli20250 CorteFrance

Numerous amphibian species occupy microhabitats with buffered thermal and moisture conditions,typically under forest ***,we assessed whether the insular endemic Salamandra corsica also uses this type of habitat,which could have important implications for its *** used data loggers to record the air temperature and air humidity at 4 h intervals over a period of 2 years,at 13 stations with a confirmed presence of *** data were compared with those recorded at Corsican weather stations and those generated by a climate model(WorldClim 2).The weather station data showed significant deviations from the probe data,by an average of-1.26℃(minimum temperature),+2.61℃(maximum temperature),and-0.04%(relative humidity).Similarly,the WorldClim 2 data showed significant deviations from the probe data,by an average of-2.49°C(minimum temperature)and+1.69℃(maximum temperature).These discrepancies refl ect the use of densely vegetated and topographically complex habitats by ***,which reduce temperature ***,our results highlight the importance of natural vegetal cover in the conservation of populations of this endemic salamander.

关键词： Fire salamander Island endemic Microclimate Probe Threatened species

Caspase-1:an important player and possible target for repair of the blood-brain barrier underlying neurodegeneration

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Neural Regeneration Research 2021年第12期16卷 2390-2392页

作者： daniel.Rand Itzik Cooper The Joseph Sagol Neuroscience Center Sheba Medical CenterRamat-GanIsrael Sackler Faculty of Medicine Tel-Aviv UniversityTel AvivIsrael School of Psychology Interdisciplinary Center(IDC)HerzliyaIsrael The Nehemia Rubin Excellence in Biomedical Research-The TELEM Program Sheba Medical CenterTel-HashomerIsrael

Our ageing population is bearing an increasing burden on society with an unprecedented rise in brain disease,especially *** for neurodegeneration is practically nonexistent,one major reason being the bloodbrain barrier(BBB).The BBB is a crucial component in maintaining a healthy brain as it protects the brain from the entrance of toxins and removes them from the brain’s vicinity,providing proper clearance.

关键词： neurodegeneration barrier remove

The NLS approximation for two dimensional deep gravity waves Dedicated to Professor Jean-Yves Chemin on the Occasion of His 60th Birthday

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Science China Mathematics 2019年第6期62卷 1101-1120页

作者： Mihaela Ifrim daniel.Tataru Department of Mathematics University of Wisconsin at Madison Department of Mathematics University of California at Berkeley

This article is concerned with in?nite depth gravity water waves in two space dimensions. We consider this system expressed in position-velocity potential holomorphic coordinates. Our goal is to study this problem with small wave packet data, and to show that this is well approximated by the cubic nonlinear Schr¨odinger equation(NLS) on the natural cubic time scale.

关键词： water waves gravity waves normal forms NLS approximation