Results 61 to 70 of about 212,091 (274)

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

open access: yesPolymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Turbocharger Structural Integrity [PDF]

open access: yes, 2014
Since the introduction of Euro VI in January 2014, all new diesel powered commercial vehicles have been equipped with turbocharged engines. It is virtually impossible to meet these emission regulations without using a turbocharger.
Allport, John   +2 more
core   +1 more source

DESIGN OF SNOW-CAR FOR JAPANESE ANTARCTIC RESEARCH EXPEDITION

open access: yesAntarctic Record, 1965
This snow car is designed for the travel through the Antarctic inland. The main requirements for the design are as follows : 1. Performance of the engine at high altitudes must be improved so that the car can climb up to 4,000 m. 2.
Yukihisa USUKU, Masayuki HOSOYA
doaj   +1 more source

“There Are Places Full of Beauty”: Desettling High School Students' Scientific Writing

open access: yesScience Education, EarlyView.
ABSTRACT This study contributes to desettling and expanding expectations about the forms of scientific language that belong in students' scientific writing. The primary empirical focus is the analysis of 52 high school student abstracts articulating community‐based investigations, submitted as part of their participation in a student conference in a ...
Alejandra Frausto Aceves
wiley   +1 more source

Cost and Performance of Automotive Emission Control Technologies [PDF]

open access: yes, 1973
The problem at hand is to investigate the near-term commercial feasibility of a wide range of automotive emission control technologies. The central issues can best be explained in terms of the emission control characteristics of each technology and their
Cass, Glen R.
core  

Ions in motor vehicle exhaust and their dispersion near busy roads [PDF]

open access: yes, 2010
Measurements in the exhaust plume of a petrol-driven motor car showed that molecular cluster ions of both signs were present in approximately equal amounts.
Jayaratne, Rohan   +2 more
core   +2 more sources

Engaging the Complexities of Energy Transitions: Sociotechnical and Dualistic Insights From Crossdisciplinary Undergraduates

open access: yesScience Education, EarlyView.
ABSTRACT Discourses of energy and energy transition have become increasingly prevalent in informal and formal learning spaces. Energy transitions differ across regions, contexts, and technologies. The contextual nature of energy is an opportunity for a sociotechnical approach to its study.
Desen S. Özkan   +2 more
wiley   +1 more source

Resource redeployment as an entry advantage in resource‐poor settings

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Scarcity of productive factors poses a challenge for firms entering underdeveloped regions. We theorize that incumbent firms can overcome scarcity of skilled human capital in local labor markets by redeploying workers from existing units.
Jasmina Chauvin   +2 more
wiley   +1 more source

C-FAR - Carbon footprinting of archaeological research: Data collection methodology and interim report [PDF]

open access: yes, 2012
Carbon Footprinting of Archaeology Research (C-FAR) focused on developing a method of determining the carbon footprint of university-led archaeological training expeditions.British ...
Gondek, Meggen M.
core  

Trading Strategies on Local Electricity Markets Using Agent‐Based Modelling and Reinforcement Learning: Vectors to Expand Energy Communities

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT Energy communities (ECs) members have a high degree of heterogeneity. Agent‐based modelling (ABM) allows for the modelling of each entity as an agent with distinct characteristics and decision rules. This is particularly useful when the heterogeneity of agents affects outcomes.
Adela Bâra, Simona‐Vasilica Oprea
wiley   +1 more source

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