Results 91 to 100 of about 212,782 (282)

Clouds, Clumps, Cores & Comets - a Cosmic Chemical Connection?

open access: yes, 2008
We discuss the connection between the chemistry of dense interstellar clouds and those characteristics of cometary matter that could be remnants of it. The chemical evolution observed to occur in molecular clouds is summarized and a model for dense core ...
Charnley, S. B., Rodgers, S. D.
core   +2 more sources

A Taxonomy of Predictive Maintenance as a Basis for Supra‐Regional Sustainability Monitoring—Literature Review

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The concept of predictive maintenance in advanced manufacturing systems is crucial from the point of view of resource efficiency in the era of high competitiveness forced by energy transformation in the digital economy. Against the backdrop of sustainability and the opportunities a data cooperative offers, the combination of predictive ...
Christian Schachtner   +6 more
wiley   +1 more source

Temporal-Spatial Distribution of Surface Urban Heat Island and Urban Pollution Island in an Industrial City: Seasonal Analysis

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This research investigates the complex interplay between urban heat island (UHI) and urban pollution island in the context of rapid urbanization. Using remote-sensed land surface temperature (LST), the UHI is categorized into five intensity levels.
Azadeh Kazemi   +3 more
doaj   +1 more source

Integrated Selective Depolymerization and Downstream Processing for Mixed Polyester Waste, Part 1

open access: yesChemie Ingenieur Technik, EarlyView.
Chemical recycling of mixed plastics by hydrolysis generates dilute monomer mixtures requiring complex downstream purification. To overcome this challenge, upstream selectivity is targeted. Tailored reaction conditions enable cascaded depolymerization which is shown for a PLA/PET model system.
Fabian Roweda, Filip Latz, Andreas Jupke
wiley   +1 more source

A Comparison of Approaches and Instruments for Evaluating a Geological Sciences Research Experiences Program [PDF]

open access: yes, 2002
This article describes a study in which changes in knowledge of science and attitudes regarding science among participants in a summer Research Experiences for Undergraduates (REU) program were examined. It was discovered that existing survey instruments
Olga Jarrett   +2 more
core  

Distributed Unmixing of Hyperspectral Data With Sparsity Constraint

open access: yes, 2017
Spectral unmixing (SU) is a data processing problem in hyperspectral remote sensing. The significant challenge in the SU problem is how to identify endmembers and their weights, accurately. For estimation of signature and fractional abundance matrices in
Khoshsokhan, Sara   +2 more
core   +2 more sources

Disentangling geography teacher educators' collective spaces of agency

open access: yesThe Curriculum Journal, EarlyView.
Abstract Societal trends such as increased accountability, teacher shortages, and flexibility in learning paths affect the work of teacher educators. This study explores the collective agency of Dutch geography teacher educators as they enact the subject pedagogy curriculum within this rapidly changing context.
Eefje Smit   +2 more
wiley   +1 more source

Infrared detectors - Special interest bibliography with abstracts [PDF]

open access: yes
Bibliography and abstracts of literature related to infrared detectors used in geoscience ...
Arnold, R. H.
core   +1 more source

Electrode structures of solid–liquid interface‐based triboelectric nanogenerators and their applications

open access: yesDroplet, EarlyView.
In this review, we have summarized the working principles and equivalent circuit diagrams of solid‐liquid interface triboelectric nanogenerators with different electrode structures, as well as the applications of devices with such structures in droplet mechanical energy harvesting and self‐powered sensing of liquid samples, along with their respective ...
Hanyue Liu   +7 more
wiley   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang   +3 more
wiley   +1 more source

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