Results 11 to 20 of about 6,605 (124)
Injection Molding Plastic Solar Cells
Advanced Science, Volume 10, Issue 32, November 14, 2023., 2023 Organic photovoltaic modules embedded into plastic parts through high throughput injection molding are demonstrated here for the first time. The modules injected with thermoplastic polyurethane show enhanced mechanical stability while keeping a high flexibility, with neglectable efficiency losses and a remarkable process yield close to 90%.
Ignasi Burgués‐Ceballos +10 more
wiley +1 more source
Estimating the cumulative impact and zone of influence of anthropogenic features on biodiversity
Methods in Ecology and Evolution, Volume 14, Issue 9, Page 2362-2375, September 2023., 2023 Abstract The concept of cumulative impacts is widespread in policy documents, regulations and ecological studies, but quantification methods are still evolving. Infrastructure development usually takes place in landscapes with preexisting anthropogenic features. Typically, their impact is determined by computing the distance to the nearest feature only,
Bernardo Brandão Niebuhr +9 more
wiley +1 more source
Microstructure and Wear Resistance in Medium and High C Steels Treated by Quenching and Partitioning
steel research international, Volume 94, Issue 8, August 2023., 2023 The microstructure, hardness, and wear resistance of two medium and high C steels heat treated by quenching and partitioning treatment are studied and compared with quenched and tempered steels. The influence of the mechanical stability of austenite under the applied wear test conditions is analyzed and related to the wear behavior.
Eider Del Molino +4 more
wiley +1 more source
Tantalum Capacitor Separation from Waste Printed Circuit Boards with Molten Salt or Metal
Chemie Ingenieur Technik, Volume 95, Issue 6, Page 944-949, June 2023., 2023 Tantalum is currently not recycled from waste printed circuit boards. A process is demonstrated on the pilot scale using either molten metal or salt, which shows promise in separating tantalum capacitors from printed circuit boards and offering a recycling route for tantalum.
Frank Riedewald +6 more
wiley +1 more source
Emparelhamentos Generalizados Associados à Tesselação {12g−6,3}
Trends in Computational and Applied Mathematics, 2010 Neste trabalho apresentamos as generalizações do problema de emparelhamentos de arestas relativos aos Casos I e IV, incluídos na Fig. 2, onde mostramos que todos os ciclos de vértices dos correspondentes polígonos têm comprimento 3, ou seja, os ...
M.B. Faria, R. Palazzo Jr.
doaj +1 more source
Geoplano: tarefas para o desenvolvimento do raciocínio no 7º ano do Ensino Fundamental
Boletim GEPEM, 2015 Apresentamos uma tarefa investigativa envolvendo a exploração do material manipulativo geoplano com o objetivo de obter a fórmula de Pick. Temos o propósito de sensibilizar o professor para o contexto da investigação matemática, mais especificamente ...
Kleber Santana Souza +1 more
doaj +3 more sources
Cuadernos de Investigación Urbanística, 2022 Resumen Para entender los procesos de formación y regeneración urbana en un sentido amplio y multidimensional, se hace necesaria una aproximación eminentemente relacional, atenta a factores y actores muy diversos, y a las circunstancias y contextos de ...
Manel Guàrdia +3 more
doaj +1 more source
Flexibilizando definições geométricas
Boletim GEPEM, 2015 Trata-se do relato de experiência de uma oficina sobre definições de polígonos e poliedros. Partindo do conhecimento dos alunos, verificamos definições incompletas e inconsistentes.
Julia Schaetzle Wrobel +1 more
doaj +3 more sources
DISSIMILAR WAYS OF INSCRIBING SIMILAR TRIANGLES
Revista Brasileira de História da Matemática, 2020 Este trabalho contrasta quarto maneiras diferentes de lidar com triângulos similares em geometria euclidiana, especialmente inscrição: usando 1) geometria elementar, 2) a amplamente comentada ‘geometria moderna’, 3) uma teoria particular de ...
Ivor Grattan Guinness
doaj +1 more source
RECORTANDO POLÍGONOS, DE LAS TIJERAS A LA GENERALIZACION
Revista de Educación Matemática, 2020 En este artículo se ilustra que un problema surgido en el Certamen "El Número de Oro" puede impulsar el entusiasmo matemático y llevar de forma natural a generalizaciones.
Luis Agustín Cárdenas Pena
doaj