Results 61 to 70 of about 1,478,276 (282)

Nickel‐Free Perovskite Solar Cells Enabled by Self‐Assembled Monolayers: A Pathway to Efficient and Recyclable Devices

open access: yesAdvanced Energy Materials, EarlyView.
Replacing toxic NiOx with phenyl‐substituted phosphonic‐acid carbazole monolayers (Ph‐5PACz) yields inverted perovskite solar cells that are efficient and recyclable. The nickel‐free interface reaches 25.3% efficiency and enables closed‐loop ITO recovery with near‐98% performance retention, while life‐cycle and techno‐economic analyses confirm lower ...
Yanxue Wang   +17 more
wiley   +1 more source

Comparative Analysis of Hydrodynamic Characteristics off Shandong Under the Influence of Two Types of Storm Surges

open access: yesJournal of Marine Science and Engineering
As China’s largest peninsula, the Shandong Peninsula faces recurrent threats from both tropical and extratropical cyclone-induced storm surges. Understanding the distinct mechanisms governing these surge types is critical for developing targeted coastal ...
Wenwen Liu   +3 more
doaj   +1 more source

Street Geometry Factors Influence Urban Microclimate in Tropical Coastal Cities: A Review

open access: yesEnvironmental and Climate Technologies, 2016
Urban climatologists have moved smoothly towards urban geometry meso-scales as obstruction between buildings, streets, and urban environment. Urban climatologists and designers have expressed that urban geometry parameters affect urban microclimate ...
Shafaghat Arezou   +5 more
doaj   +1 more source

The Tropical and Zonotopal Geometry of Periodic Timetables

open access: yesDiscrete & Computational Geometry
Abstract The Periodic Event Scheduling Problem (PESP) is the standard mathematical tool for optimizing periodic timetables in public transport. A solution to a PESP instance consists of three parts: a periodic timetable, a periodic tension, and integer offset values. While the space of periodic tensions has received much attention in the past,
Enrico Bortoletto   +2 more
openaire   +4 more sources

Intersecting solitons, amoeba, and tropical geometry [PDF]

open access: yesPhysical Review D, 2008
We study generic intersection (or web) of vortices with instantons inside, which is a 1/4 BPS state in the Higgs phase of five-dimensional N=1 supersymmetric U(Nc) gauge theory on R_t \times (C^\ast)^2 \simeq R^{2,1} \times T^2 with Nf=Nc Higgs scalars in the fundamental representation. In the case of the Abelian-Higgs model (Nf=Nc=1), the intersecting
Fujimori, Toshiaki   +4 more
openaire   +2 more sources

Tropical Aspects in Geometry, Topology and Physics [PDF]

open access: yes, 2015
The workshop Tropical Aspects in Geometry, Topology and Physics was devoted to a wide discussion and exchange of ideas between the leading experts representing various points of view on the subject.

core   +1 more source

Bezout's Theorem in Tropical Algebraic Geometry [PDF]

open access: yes, 2020
In this thesis, a version of Bezout's theorem in tropical geometry is studied. The classical Bezout's theorem counts the number of intersections for two curves defined on an algebraically closed field, for which we motivate and define relevant concepts ...
Lang, Mingming
core   +1 more source

Turning a new leaf: PhenoVision provides leaf phenology data at the global scale

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Plant phenology dictates many aspects of community function and ecosystem dynamics. Yet, global phenology data are still limited, especially in areas lacking monitoring programs. Here we present a new data resource, PhenoVision–Leaf, which extends a computer vision pipeline utilizing iNaturalist digital image vouchers to produce global‐
Erin L. Grady   +6 more
wiley   +1 more source

Ways of linking geometry and algebra, the case of Geogebra

open access: yes, 2007
This paper discusses ways of enhancing the teaching of mathematics through enabling learners to gain stronger links between geometry and algebra. The vehicle for this is consideration of the affordances of GeoGebra, a form of freely-available open-source
BSRLM Geometry Working Group   +2 more
core   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo   +2 more
wiley   +1 more source

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