Results 131 to 140 of about 1,478,276 (282)

Semiring Congruences and Tropical Geometry [PDF]

, 2016
One of the main motivations and inspirations for this thesis is the still open question of the definition of geometry in characteristic one. This is geometry over a structure, called an idempotent semiring, in which 1+1 = 1.
Mincheva, Kalina
core  

Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane

Journal of Polymer Science, EarlyView.
Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello, Lucas Repecka Alves, Guilherme Manassés Pegoraro, Henrique Solowej Medeiros Lopes, Amanda Stefanie Jabur de Assis, Thaís de Agrella Janolla, David Rodrigues Gomes, Diego Aleixo da Silva, Beatriz Merillas, Fabiana Aparecida Lobo, Fabio Minoru Yamaji, Maira de Lourdes Rezende, Aparecido Junior de Menezes, Giovanni Pimenta Mambrini   +13 more
wiley   +1 more source

Using art history to explore society's changing connections with agriculture

PLANTS, PEOPLE, PLANET, EarlyView.
Food insecurity is a looming challenge that especially affects those least fortunate. Consumer food choices have a substantial impact on the sustainability of current food systems. Here, we use art as a lens through which to consider our contemporary and historical relationship to one of the world's most crucial crops, the potato, in the context of the
Edward F. Hill‐King, Martin R. McAinsh, Michael R. Roberts   +2 more
wiley   +1 more source

Simulation-Based evaluation of adaptive light shelf design for daylight uniformity in tropical office buildings

ARTEKS : Jurnal Teknik Arsitektur
Light shelves represent a quintessential passive design typology, traditionally utilized to augment daylight penetration while simultaneously mitigating glare to enhance interior visual ergonomics; however, conventional static configurations often fail ...
Sega Purnama
doaj   +1 more source

The Birational Geometry of Tropical Compactifications [PDF]

, 2010
We study compactifications of subvarieties of algebraic tori using methods from the still developing subject of tropical geometry. Associated to each ``tropical compactification is a polyhedral object called a tropical fan.
Diemer, Colin
core  

WorldCuP: A database of checklists documenting the World's Cultivated Plants and their distributions

PLANTS, PEOPLE, PLANET, EarlyView.
Human life would be unrecognizable without the benefits of cultivated plants, including crops, ornamentals, or plants with other uses. Despite their importance in daily life and prevalence across landscapes, we know surprisingly little about global cultivated plant distributions.
Nicole L. Kinlock, Amy J. S. Davis, Mark van Kleunen   +2 more
wiley   +1 more source

Tropical plane geometric constructions: a transfer technique in Tropical Geometry

Revista Matemática Iberoamericana, 2011
The notion of geometric construction is introduced. This notion allows to compare incidence configurations both lying in the algebraic and the tropical plane. We provide sufficient conditions in a geometric construction to ensure that there is always an algebraic counterpart related by tropicalization.
openaire   +4 more sources

Two centuries of Begonia exploration in the Philippines: Progress and challenges associated with a megadiverse genus in the Global South

PLANTS, PEOPLE, PLANET, EarlyView.
Megadiverse genera represent the highest concentration of plant diversity, but these plants are also located primarily in countries in the Global South where huge gaps in botanical knowledge remain. This study summarized two centuries of Begonia collection records in the Philippines to show how historical events coincide with collection and taxonomic ...
Mark Angelo C. Bucay, EB Perez‐Bellen, Marjorie D. Delos Angeles, Danilo N. Tandang, Rosario R. Rubite, Kuo‐Fang Chung   +5 more
wiley   +1 more source

Simple Mechanism for Optimal Light-Use Efficiency of Photosynthesis Inspired by Giant Clams

PRX Energy
In photosymbiotic giant clams, vertical columns of single-celled algae absorb sunlight that has first been forward scattered from a superficial layer of light-scattering cells called iridocytes.
Amanda L. Holt, Lincoln F. Rehm, Alison M. Sweeney   +2 more
doaj   +1 more source

Optimization of Solar Panel Tilt for Enhanced Electrical Power Output based on Solar Radiation Variations in Cilacap

Rekayasa Mesin
The performance of photovoltaic (PV) systems in tropical regions such as Indonesia is strongly influenced by the panel tilt angle, which determines the amount of solar radiation captured.
Christian Soolany, Nur Aji Bangkit Barkah Pangestu, Didi Zinedine Waluyo, Setya Permana Sutisna   +3 more
doaj   +1 more source