by Lin Xie  and Donald Kirk

Received: 09 June 2021;  Published: 16 September 2021;  doi: 10.21926/cr.2103003

Fe-rich alloys have been widely studied as catalyst materials for the cathodic oxygen reduction reaction (ORR) in hydrogen fuel cells, and many have shown high activities. The stability of Fe-rich catalysts has also been researched, and some studies have shown promising results using an accelerated stress test (AST), which uses a potential cycling method. However, for commercial fuel cell applications, such as standby power systems, the catalyst has to tolerate a high potential for a long period, which can not be r [...]

by Yoshinori Murakami  and Minato Nakamura

Received: 17 August 2021;  Published: 13 September 2021;  doi: 10.21926/cr.2103002

The photocatalytic reaction involved in TiO2 photocatalysis was investigated using a microreactor coated with TiO2 film on the glass plate attached on one side of the microreactor. It was confirmed that the effect of H2O2 on the photocatalytic degradation efficiency of azo dyes (acid orange 7, acid red 151, and acid yellow 23) was dependent on the polymorphs (anatase and rutile) of TiO2 coated on the glass plate of the UV-irradiated microreactor. Scavengers of holes (KI) and electrons (p-benzoquinone) were added to [...]

by Shiping Wang  , Georg Bendt  and Stephan Schulz

Received: 24 May 2021;  Published: 16 July 2021;  doi: 10.21926/cr.2103001

One-pot synthesis of mesoporous hybrid material consisting of Mn-Co/CoO nanoparticles encapsulated in an N-doped graphene shell decorated with Mo2C nanoparticles (Mo2C-NC@Mn-Co/CoO) was reported. The Mn and Mo components synergistically refined the graphitized carbons due to the interactions with N and C atoms while promoting the stability of the Co/CoO nanoparticles. These components exhibited a beneficial effect on the dispersion of the active metal/metal oxide nanoparticles and the formation of a mesoporous stru [...]

by Omar Alelweet

Received: 08 October 2024;  Published: 23 January 2025;  doi: 10.21926/aeer.2501009

Carbon emissions are quantified in terms of carbon dioxide equivalents, generated through a specific activity or accumulated throughout the life stages of a product or service. Given the growing concern about climate change and the role of carbon dioxide emissions in global warming, this initiative aims to create awareness and understanding of the impact of human activities and identify potential areas for improvement regarding the management of the carbon footprint on campus. Given that trees play a vital role in [...]

by Mamun Mahmud  and Md. Mujahid Hasan

Received: 06 September 2024;  Published: 20 January 2025;  doi: 10.21926/aeer.2501008

The concentration of heavy metals in road dust poses significant risks to human health and the environment. This study investigates the characteristics of road dust, focusing on the contamination level of heavy metals like lead (Pb), iron (Fe), and arsenic (As). Road dust samples were collected from various locations in Khulna city. They went through acid digestion to determine the Pb, Fe, and As levels using ICP-OES, and bioavailable iron was assessed by mixing the dust samples with water. This study found no dete [...]

by Shih-Ang Hsu

Received: 17 October 2024;  Published: 15 January 2025;  doi: 10.21926/aeer.2501007

In the realm of marine meteorology, physical oceanography, and coastal and ocean engineering, the wind-stress across the air-sea interface plays a dominant role. However, under tropical cyclone conditions, there is no consensus for the formulation of the drag coefficient, Cd, in the literature. Based on the wind-gust method and the measurements from data buoy 42001 during Hurricane Lili, it is demonstrated that, U* = 0.073U10 - 0.44, which is valid up to wind speed 47 m s-1 and wind gust to 66 m s-1, here U* is the [...]

by Sandra Kiessling

Received: 06 September 2024;  Published: 15 January 2025;  doi: 10.21926/aeer.2501006

The World climate is changing, with a great impact on global food production systems. Extreme weather events, floods, wildfires and draughts are phenomena of disrupted previously stable natural weather patterns, which are vital for crop production and animal husbandry alike. Most of the World’s food is produced in temperate climatic zones rich in arable land and those are affected by the increasing unpredictability of previously naturally occurring seasons and weather conditions. This work aims to provide a possibl [...]

by Jianquan Xu  , Jinwen Liu  , Wen Lei  , Zhong Lu  and Long Ying

Received: 01 September 2024;  Published: 10 January 2025;  doi: 10.21926/aeer.2501005

To study the environmental impact of automobile components, life cycle assessment (LCA) is adopted to study the environmental impact of instrument cross beams made of steel and magnesium alloy crossbeams. Comparative environmental impact analyses of both instrument crossbeams are conducted through parametric analysis, scenario analysis, sensitivity analysis, and future forecasting in GaBi10. The results show that global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), ozone depl [...]

by Buratovich María Victoria  and Acciaresi Horacio Abel

Received: 04 July 2024;  Published: 06 January 2025;  doi: 10.21926/aeer.2501004

The aim of this work was to determine the photosynthetically active radiation interception (iPAR) during the cover crop (CC) growth cycle, the number and aerial dry matter (ADM) of weeds, and productivity in the following soybean and maize rotation crop. To do this, experiments with CC were performed in 2015-2016 using Hordeum vulgare L., Lolium multiflorum L., Avena sativa L., Bromus unioloides L., Vicia villosa L., Brassica campestris L., Raphanus sativus L., and Avena sativa/Vicia villosa. The iPAR at the vegeta [...]

by Agegnehu Kitanbo Yoshe

Received: 03 September 2024;  Published: 06 January 2025;  doi: 10.21926/aeer.2501003

Managing water resources offers crucial information about the availability of water supplied from catchments into water bodies, which plays a vital role in water resource engineering. However, due to changes in the global climate, hydrological modeling of river catchments is critically crucial for socio-economic development and livelihoods. Numerous models evaluate runoff from precipitation, but the SCS-CN method is fundamental and the most widely recognized for calculating runoff. This research evaluates runoff de [...]