Results 141 to 150 of about 307,504 (304)

Microwave-Assisted Organic Synthesis: An Eco-Friendly Method of Green Chemistry

open access: yesPharmaceuticals
The name Green Chemistry was coined in 1996 to point out the development of chemical substances and sustainable processes that reduce the formation of toxic products for the environment and humans.
Josè Starvaggi, Roberta Ettari
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

Productivity of sugarcane plants of ratooning with fertilizing treatment [PDF]

open access: yes, 2010
Penelitian ini bertujuan untuk menentukan produktivitas tebu keprasan dengan perlakuan pemupukan input eksternal rendah, sehingga petani dapat meningkatkan keuntungan.
LATIEF, A. SUTOWO   +3 more
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Towards an\u2028 EU research and innovation policy agenda for nature-based solutions & re-naturing cities. Final report of the Horizon 2020 expert group on nature-based solutions and re-naturing cities. [PDF]

open access: yes, 2015
1. Nature-based solutions harness the power and sophistication of nature to turn environmental, social and economic challenges into innovation opportunities.
Cecchi, Claudio   +13 more
core  

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter   +5 more
wiley   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Applicability of green chemistry principles for optimum environmental conservation and sustainability in sub-Saharan Africa

open access: yesGreen Chemistry Letters and Reviews
The African region south of the Sahara Desert is important in the global socio-economic landscape owing to its natural resources, agricultural potential, and emerging industrialization.
Harieth Hellar-Kihampa
doaj   +1 more source

Commodities in a global vision for agriculture towards 2010 [PDF]

open access: yes, 2007
It is impossible to see a hundred years into the future. So, how can we imagine what will become of commodity crops in Malaysia by 2100? Yet, worldwide, these commodity crops provide a living for hundreds of millions of people: how they evolve will have ...
Habib, Robert   +3 more
core  

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