Results 81 to 90 of about 24,139,640 (291)

Water in the 2000 Virginia General Assembly

open access: yes, 2000
The Virginia General Assembly held its 2000 session from January 12 to March 10. Lawmakers considered 3,172 bills and resolutions (compared to 2,735 measures considered in 1999).
Virginia Water Resources Research Center
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Research on the Operation of a Solar–Air Source Heat Pump Hot Water System Based on the Demand-Side ANN-LSTM-STA Algorithm for Prediction Response

open access: yesEnergies
The solar–air source heat pump (S-ASHP) system is used to prepare domestic hot water and is an important form of hot water preparation in many colleges and universities in China.
Bo Deng   +4 more
doaj   +1 more source

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

open access: yesAdvanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao   +6 more
wiley   +1 more source

Water in the 2005 Virginia General Assembly

open access: yes, 2005
The 2005 Virginia General Assembly convened January 12 and adjourned February 27, with a reconvened (“veto”) session on April 6. The legislature considered 3363 measures (2938 introduced this year and 425 carried over from last year); 1610 measures ...
Virginia Water Resources Research Center
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Study on Acceptance System of Soil and Water Conservation Project Based on 3S Technologies

open access: yesShuitu baochi yanjiu, 2005
The efficiency and precision is low in traditional acceptance of soil and water conservation project.With the development of new technology,especially 3S technologies widely application in soil and water conservation,the improvement of efficiency and ...
CHEN Sheng-li   +2 more
doaj  

Highly Robust and Selective System for Water Pollutants Removal: How to Transform a Traditional Photocatalyst into a Highly Robust and Selective System for Water Pollutants Removal

open access: yesNanomaterials, 2019
Highly porous monolithic aerogels based on ZnO photocatalyst and syndiotactic polystyrene (s-PS) were obtained by supercritical CO2 treatment of ZnO/s-PS gels. The prepared aerogels were characterized and their photocatalytic activity was evaluated using
Olga Sacco   +4 more
doaj   +1 more source

From Traditional to Modern Water Management Systems; Reflection on the Evolution of a ‘Water Ethic’ in Semi-Arid Morocco [PDF]

open access: yes, 2011
The chapter focuses on water because of the crucial importance of that resource in a semiarid country and because the ways in which it has been managed throughout centuries illustrate the changes in socio-political structures in the society. The focus on water in a semi arid country is symbolic of how precious natural resources are in the development ...
openaire   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

open access: yesAdvanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer   +4 more
wiley   +1 more source

Water in the 2006 Virginia General Assembly

open access: yes, 2006
The 2006 Virginia General Assembly convened January 11 and adjourned March 11, with a reconvened (“veto”) session on April 19. The legislature considered 3287 measures; among the most important business was development of the biennial state budget. Below
Virginia Water Resources Research Center
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