Results 141 to 150 of about 9,253 (301)

Viscosity Reduction in Diluted Polyethylene Melts: A Comparative Study of Semiempirical, Viscoelastic, and Equation‐of‐State Modeling Frameworks

open access: yesPolymer Engineering &Science, EarlyView.
Schematic of the in‐line rheometry setup and the evaluation of three distinct modeling frameworks (semiempirical, viscoelastic, and EOS) to predict viscosity reduction in diluted polyethylene melts via time‐concentration superposition (Illustration generated via ChatGPT).
Ernst Georg Viehböck   +5 more
wiley   +1 more source

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui   +4 more
wiley  

+2 more sources

Fabrication of an antimicrobial active packaging and its effect on the growth of Pseudomonas and aerobic mesophilic bacteria in chicken

open access: yesVitae, 2015
ackground: One of the aims of food packaging is to protect the product from environmental factors that can cause a reduction in quality. Surface growth of microorganism is one of the leading causes of food spoilage.
Odilia Azucena HIGUERA BARRAZA   +3 more
doaj  

CO2‐Assisted Foaming of PLA–Cellulose Acetate Blends for Peat‐Free Horticultural Substrates

open access: yesPolymer Engineering &Science, EarlyView.
Engineered porous substrate facilitating seed incorporation, water retention, and plant growth. ABSTRACT This study investigates carbon dioxide assisted (CO2) foaming of polylactic acid (PLA)–cellulose acetate (CA) blends to develop biodegradable substrates for horticultural applications.
Kaleum Meaney   +8 more
wiley   +1 more source

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

open access: yesJournal of Polymer Science, EarlyView.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba   +4 more
wiley   +1 more source

Basalt models for the Mars penetrator mission: Geology of the Amboy Lava Field, California [PDF]

open access: yes
Amboy lava field (San Bernardino County, California) is a Holocene basalt flow selected as a test site for potential Mars Penetrators. A discussion is presented of (1) the general relations of basalt flow features and textures to styles of eruptions on ...
Bunch, T. E., Greeley, R.
core   +1 more source

Comparison of Recycled Polypropylene Sourced From Food and Nonfood Applications for Direct Food Contact Use

open access: yesPackaging Technology and Science, EarlyView.
Utilisation of postconsumer recycled (PCR) plastic for food contact has safety concerns due to the potential presence of unapproved intentionally/non‐intentionally added substances, which can pose health and environmental risks if not removed during recycling.
Khairun Tumu   +2 more
wiley   +1 more source

Preliminary design of the Shuttle-C avionics recovery system [PDF]

open access: yes
The analysis done in developing a recovery system for the Shuttle-C cargo vehicle is presented. This recovery system is comprised of a reentry capsule which houses the vehicles avionics.
Brookfield, Morgan   +4 more
core   +1 more source

Life Cycle Assessment of Closed‐Loop Opaque Recycled Polyethylene Terephthalate (rPET) Bottles for UHT Milk

open access: yesPackaging Technology and Science, EarlyView.
The study quantifies environmental impacts of 1 L of ultra‐high‐temperature milk bottles, comparing a 50% recycled opaque PET (rPET) bottle with 100% virgin PET bottles under closed‐loop and non‐closed‐loop recycling scenarios. Results show that 50% opaque rPET bottles outperform 100% virgin PET bottles across all impact categories, enabled by an ...
Alessandra Garzoni   +2 more
wiley   +1 more source

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