Results 21 to 30 of about 782,235 (252)

Study on Temporal and Spatial Characteristics of Heavy Metal Pollution in Coal Gangue Piles in Mining Area

Kuangchan zonghe liyong, 2022
With the massive mining of coal resources, a large amount of coal gangue has been accumulated on the surface to form gangue hills. Gangue hills encroach on a large amount of land while releasing a variety of harmful heavy metal elements, which can be ...
Jiefeng Li
doaj   +1 more source

Electromagnetic Energy Absorption in a Head Approaching a Radiofrequency Identification (RFID) Reader Operating at 13.56 MHz in Users of Hearing Implants Versus Non-Users

Sensors, 2019
The aim of this study was to model the absorption in the head of an electromagnetic field (EMF) emitted by a radiofrequency identification reader operating at a frequency of 13.56 MHz (recognized as an RFID HF reader), with respect to the direct ...
Patryk Zradziński, Jolanta Karpowicz, Krzysztof Gryz   +2 more
doaj   +1 more source

Effects of revetments on soil ecosystems in the urban river-riparian interface

iScience, 2022
Summary: By altering material and energy exchange between river and riparian, the city revetments have an unknown impact on the service function of river-riparian interface (RRI) ecosystems. This study analyzes the differences in natural, permeable (PR),
Zihao Man, Changkun Xie, Ruiyuan Jiang, Anze Liang, Hao Wu, Shengquan Che   +5 more
doaj   +1 more source

Energy Cost of an Independent Micro-grid with Control of Power Output Sharing of a Distributed Engine Generator

Journal of Thermal Science and Technology, 2007
Small kerosene diesel-engine power generators are introduced into an independent micro-grid (IMG) that connects 20 houses, and power and heat are supplied to them.
Shin'ya OBARA
doaj   +1 more source

Assessing the Antenna Performance (Radiated Power) and Electromagnetic Impact (SAR) on a User of a Wearable RF Communication Device, Involving Variously Structured Models

IEEE Access
The investigations focused on the significance of the structural design of models of a wearable device equipped with a wireless radiofrequency communication module (W-RFCD) operating at 2.45 GHz.
Patryk Zradzinski, Jolanta Karpowicz, Krzysztof Gryz   +2 more
doaj   +1 more source

Challenges in Simulating Pollutant Behavior in Watercourses with Diverse Ecological and Structural Features [PDF]

Journal of Applied Fluid Mechanics
The article presents the results of simulation studies conducted on a hypothetical watercourse with two simultaneous sources of pollutants of differing types, aimed at better understanding pollutant dispersion in complex riverine environments.
W. Sobieski
doaj   +1 more source

Varstvo okolja in univerzitetni študij tehnike ( = Environment protection and university technical curriculum) [PDF]

Geodetski Vestnik, 2015
This paper deals with a university degree in Environmental Engineering as a part of university studies in Engineering and shows engineering fields in which environmental engineering studies have been established as stand-alone studies globally ...
Matjaž Mikoš, Mojca Lorber, Andreja Istenič Starčič   +2 more
doaj   +1 more source

Fostering sustainable development values among engineering students using Service-Learning

Frontiers in Education
In the majority of nations, environmental sustainability is an integral aspect of government policies, highlighting the criticality of equipping upcoming engineers with the necessary environmental awareness and skills to tackle this complex challenge ...
Jesús López-Santiago, Mónica de Francisco Alonso, Sergio Zubelzu-Minguez, Luis Ruiz-Garcia, María Teresa Gómez-Villarino   +4 more
doaj   +1 more source

Environmental Engineering [PDF]

, 2020
Abstract Bees engineer the environment. Their foraging activities change the floral composition near the nest, thereby changing the niches of other species that depend on the vegetation for food and shelter. Changes in floral abundance and composition resulting from their activities may also benefit them directly or descendant colonies ...
openaire   +2 more sources

Restoration of Posidonia oceanica Meadow Using Cuttings from an Area Impacted by Harbor Extension Project

Journal of Marine Science and Engineering
In the Mediterranean Sea, restoration of marine habitats has mostly focused on the endemic seagrass Posidonia oceanica. Despite several transplanting experiments, large-scale projects are rare, and their success is poorly known.
Mario De Luca, Luigi Piazzi, Ivan Guala, Maria Francesca Cinti, Paolo Marras, Arianna Pansini, Federico Pinna, Alessandra Puccini, Antonio Santonastaso, Myriam Stelletti, Patrizia Stipcich, Vincenzo Pascucci   +11 more
doaj   +1 more source