Results 61 to 70 of about 164,032 (312)

Combined Gravimetric, Electrochemical, and Computational Research on Benzothiophene Derivatives as Effective Corrosion Inhibitors for Mild Steel

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Four benzothiophenes, thianaphthene (BT‐1), 3‐bromothianaphthene (BT‐2), benzo[b]thiophene‐2‐carboxaldehyde (BT‐3), and benzo[b]thiophene‐2‐carbonitrile (BT‐4), were tested as mild steel corrosion inhibitors in 1‐M HCl. The compounds have the similar benzothiophene core but differ in the substituents bound to the ring.
Nhlanhla G. Chirwa   +3 more
wiley   +1 more source

U.S. R&D 1975-1998: A New Dataset

open access: yes
This novel dataset covers 2805 companies with 8525 facilities, including location, reporting line within the organization, numbers of professional staff and technicians, and R&D fields over the years 1975-98.
Png, Ivan
core   +2 more sources

Cost-Effective and Sustainable Design for Paper Recycling

open access: yesEngineering Proceedings
This text describes a study that investigates the mechanics, environmental benefits, and potential challenges of paper recycling machines. It highlights the importance of these machines in promoting a more sustainable future, and how they align with the ...
David Willie   +3 more
doaj   +1 more source

Colonial Voice Reinterpreted: A Readers Theatre Presentation

open access: yeseTropic: electronic journal of studies in the tropics, 2011
Father and daughter inhabit the same space but interpret it differently. A colonial and a present-day educator see Papua New Guinea life through new lenses - the curriculum and the academic goals; students with new ambitions and diverse lifestyle issues;
Jillian Thiele, David Thiele
doaj   +1 more source

Soil fertility status and sweet potato cultivation in composted mounds under humid lowland tropical climatic conditions

open access: yesSains Tanah: Journal of Soil Science and Agroclimatology, 2020
The importance of organic matter addition in composted mounds in terms of nutrients status, nutrient uptake, and environmental impact under different climatic conditions need to be studied. This study was conducted to assess the importance of Cogon grass
Patrick S. Michael
doaj   +1 more source

Preparation and Performance Evaluation of a Self‐Generated Particle Plugging Agent Based on Thermosetting Resin

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A thermosetting in situ curing resin microsphere system has been developed. It has controllable phase transition time and particle size. This system addresses the current challenges of low strength, shear susceptibility, and short phase transition time in polymer microsphere blockers and thermoplastic particle blockers.
Baolei Jiao   +5 more
wiley   +1 more source

Current Evidence and Future Projections: a Comparative Analysis of the Impacts of Climate Change on Critical Climate-Sensitive Areas of Papua New Guinea

open access: yesSains Tanah: Journal of Soil Science and Agroclimatology, 2019
Climate change is a global concern arising from spatial or temporal changes in precipitation, temperature and greenhouse gases. The impacts of this on critical climate-sensitive areas are largely on land, marine resources, forestry and agriculture, and ...
Patrick S. Michael
doaj   +1 more source

Roles of Leucaena leucocephala (Lam.) on Sandy Loam Soil pH, Organic Matter, Bulk Density, Water - Holding Capacity and Carbon Stock Under Humid Lowland Tropical Climatic Conditions. [PDF]

open access: yesBulgarian Journal of Soil Science, 2019
Leucaena (Leucaena leucocephala Lam.) trees planted in alley cropping or established on fallowed farms by natural means contribute significantly to soil health and productivity by influencing various soil properties.
Patrick S. Michael
doaj   +1 more source

Construction of Lean Coal Molecular Structure Model Based on Spectroscopic Characterization

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The chemical structure of coal exerts a profound influence on its properties and utilization pathways. A comprehensive analysis of coal's molecular structure is crucial for mitigating environmental pollution arising from coal combustion and improving the efficiency of coal utilization.
Song Liu   +5 more
wiley   +1 more source

Location of U.S. Manufacturing, 1987-2014: A New Dataset

open access: yes
The present dataset matches Compustat to the the U.S. Environmental Protection Agency Toxics Release Inventory (TRI) https://www.epa.gov/toxics-release-inventory-tri-program.
Xiong, Xi, Png, Ivan
core   +2 more sources

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