Results 91 to 100 of about 34,366 (261)

Application of analytical hierarchy process to assess groundwater potential for a sustainable management in the Menoua Division

Heliyon
Number of wells drilled by private and public stakeholders, as well as nongovernmental organizations in the Menoua Division are unproductive. This is due to the lack of preliminary surveys assessing groundwater potential (GWP). A combined remote sensing (
Dady Herman Agogue Feujio, Zakari Aretouyap, Sandra Celeste Tchato, Charles Ngog II Legrand, Ernest Djomdi, Nidelle Nague Madadjeu, Cedric Nguimfack Nguimgo, Abas Ndinchout Kpoumie   +7 more
doaj   +1 more source

Dynamic Covariance Models for Multivariate Financial Time Series [PDF]

, 2013
The accurate prediction of time-changing covariances is an important problem in the modeling of multivariate financial data. However, some of the most popular models suffer from a) overfitting problems and multiple local optima, b) failure to capture ...
Ghahramani, Zoubin, Hernández-Lobato, José Miguel, Wu, Yue   +2 more
core  

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez, Amjad Othman, Majid Linjawi, Amro Al‐Qutub   +3 more
wiley   +1 more source

Performance assessment on a modified precision refrigeration cycle using low GWP mixtures

Case Studies in Thermal Engineering
Recently, with the increasing worldwide demand for low-temperature freezers, applying natural working medium hydro-carbon refrigerants for them has been widely concerned.
Lingeng Zou, Ye Liu, Qinghua Chen
doaj   +1 more source

Thermodynamic analysis of a dual-loop organic Rankine cycle (ORC) for waste heat recovery of a petrol engine [PDF]

, 2016
Huge amounts of low-grade heat energy are discharged to the environment by vehicular engines. Considering the large number of vehicles in the world, such waste energy has a great impact on our environment globally.
Bei, Chen, Collings, Peter, Wang, Enhua, Yang, Fubin, Yu, Zhibin, Zhang, Hongguang   +5 more
core  

New Eco-gas mixtures for the Extreme Energy Events MRPCs: results and plans

, 2019
The Extreme Energy Events observatory is an extended muon telescope array, covering more than 10 degrees both in latitude and longitude. Its 59 muon telescopes are equipped with tracking detectors based on Multigap Resistive Plate Chamber technology with
Abbrescia, M., Avanzini, C., Baldini, L., Batignani, G., Battaglieri, M., Boi, S., Bossini, E., Carnesecchi, F., Chiavassa, A., Cicalo, C., Cifarelli, L., Coccetti, F., Coccia, E., Corvaglia, A., De Gruttola, D., De Pasquale, S., Fabbri, F. L., Ferroli, L. Baldini, Frolov, V., Galante, L., Galeotti, P., Garbini, M., Gemme, G., Gnesi, I., Grazzi, S., Gustavino, C., Hatzifotiadou, D., La Rocca, P., Mandaglio, G., Maron, G., Mazziotta, M. N., Miozzi, S., Nania, R., Noferini, F., Nozzoli, F., Palmonari, F., Panareo, M., Panetta, M. P., Paoletti, R., Park, W., Pellegrino, C., Perasso, L., Pilo, F., Piragino, G., Pisano, S., Riggi, F., Righini, G. C., Ripoli, C., Rizzi, M., Rodriguez, O. Maragoto, Sartorelli, G., Scapparone, E., Schioppa, M., Scribano, A., Selvi, M., Serci, S., Squarcia, S., Taiuti, M., Terreni, G., Trifirò, A., Trimarchi, M., Vistoli, M. C., Votano, L., Williams, M. C. S., Zheng, L., Zichichi, A., Zuyeuski, R.   +66 more
core   +1 more source

Carbon‐Negative Upcycling of Sewage Sludge into Superiorly Stable Gel Via Liquid‐Phase Utilization Strategy for Water‐Remediation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work developed a low‐temperature sludge hydrothermal coupled with gel crosslinking strategy which could upgrade the waste liquid generated from sewage sludge hydrothermal treatment into the hydrothermal‐liquid‐gel. The inventive hydrothermal‐liquid‐gel exhibited the enhanced pollutant removal capability, high synthetic stability, and superior ...
Zifan Liu, Sunxinyi Wang, Lingxiao Lu, Weiguo Zhang, Qiang Zheng, Cailiang Yue, Huimin Chang, Xiaohui Lu, Ming Xu, Zhi Qian, Qing Zhou, Fuqiang Liu, Baoshan Xing   +12 more
wiley   +1 more source

Quantifying the global warming potential of low carbon concrete mixes: Comparison of existing life cycle analysis tools

Case Studies in Construction Materials
One of the most feasible approaches to reduce the carbon footprint of concrete, a critical contributor to global CO2 emissions, is to consider the high-volume replacement of cement with supplementary cementitious materials (SCMs).
Andrew Witte, Nishant Garg
doaj   +1 more source

Properties of Polyol Esters for Low GWP Refrigerants

, 2021
HFC (Hydrofluorocarbon) refrigerants, whose ODP (Ozone Depletion Potential) is 0, are used in refrigeration and air conditioning equipments recently. It is known that HFCs are high GWP (Global Warming Potential) refrigerants. In October 2016, Kigali Amendment to the Montreal Protocol was stated to achieve the phase-down of HFC refrigerants to prevent ...
Nakajima, Tatsuki, Mizutani, Yuya, Onumata, Yasushi   +2 more
openaire   +1 more source

Nanomaterials and Eco‐Friendly Refrigerants in Vapor Compression System: A Review of Performance and Sustainability

Energy Science &Engineering, EarlyView.
This review highlights how nano oils and eco‐friendly nano refrigerants enhance energy‐efficient refrigeration by improving thermal conductivity, lubrication, and system performance. The integration of rheological and tribological testing confirms reduced compressor work, better heat transfer, and higher COP using sustainable, low‐GWP refrigerants for ...
Mohammed Dilawar, Bisma Ali, Turali Narayana, Mohammad Reza Chalak Qazani, Rehan Khan, Adnan Qayoum, Tabrez Qureshi, Mohd Mujtaba Ahmed   +7 more
wiley   +1 more source