Results 61 to 70 of about 225,810 (310)

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

The Social unity.

open access: yes, 1901
Title from cover.Mode of access ...
Social Reform Union.
core  

Changing Assessment Practice: Process, Principles and Standards [PDF]

open access: yes, 2008
This is a brief account of what has been learned during the Analysis and Review of Innovations in Assessment (ARIA) project about how changes in assessment practice may be brought about most eff ectively.
Gardner, John   +3 more
core  

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

open access: yesAdvanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park   +11 more
wiley   +1 more source

Christianity and social reform

open access: yes, 2009
Christianity is a religion of reform ... personal, social, structural, and communal. It not only reforms those involved in it – it also changes the rules in the societies where it is a vibrant witness. The result is not merely a tally of ‘reform projects’
Hutchinson, Mark (R16644)
core  

High‐Performance Transparent, Deformable, and Recoverable Biomimetic Stevia–PVA Hydrogel Triboelectric Nanogenerator with Machine Learning‐Assisted Motion Recognition

open access: yesAdvanced Materials, EarlyView.
A transparent, deformable stevia–PVA hydrogel triboelectric nanogenerator delivers significantly enhanced mechanical strength and electrical output through biomimetic hydrogen‐bonded networks. Coupled with machine learning–assisted signal recognition, the self‐powered hydrogel enables accurate human‐motion sensing for intelligent wearable and IoT ...
Thien Trung Luu   +5 more
wiley   +1 more source

“Law in the Books” and “Law in the Actions”

open access: yesEIRP Proceedings, 2011
Normative order’s notion does not pretend to develop some kind of a rigorous science of perfectunderstanding of human and social processes, nor does it claim to provide the final truth of normativeprocesses at all levels.
Bidzina Savaneli
doaj  

Designing Strong, Tough, Fire‐Retardant and Self‐Healing Elastomers with Phosphorus/Nitrogen‐ and Biphenyl‐Containing Segments

open access: yesAdvanced Materials, EarlyView.
By designing a P/N‐ and π–π interacting biphenyl‐containing diol as hard segments but side groups, a strong, tough, fire‐extinguishing and self‐healing elastomer is developed, demonstrating a break strain of ∼2500%, a toughness of 379 MJ/m3 and a tensile strength of 46 MPa, as well as a healing efficiency of 95% (tensile strength) and 99% (break strain)
Yijiao Xue   +11 more
wiley   +1 more source

Social Security Pension Reform in China [PDF]

open access: yes
China has legislated a mixed social security pension system with a defined benefit pay-as-you-go portion and an investment-based defined contribution portion.
Martin Feldstein
core  

Earnest Hypocrisy: The Evangelical Reformer in William M. Thackeray’s Vanity Fair

open access: yesReligions
This essay examines William Makepeace Thackeray’s Vanity Fair (1847–48) through the lens of nineteenth-century Anglican Evangelicalism, arguing that Thackeray’s portrayal of Pitt Crawley (Junior) crystallizes the paradoxes of Evangelical reform culture ...
Houliang Chen, You Zhang
doaj   +1 more source

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