Results 41 to 50 of about 34,645 (269)
Recent Advances in Enhancing the Sensitivity of Biosensors Based on Field Effect Transistors
Advanced Electronic Materials, EarlyView.This paper discusses the methods to enhancing the detection sensitivity of biosensors in three aspects: overcoming the influence of Debye shielding effects, promoting the binding efficiency of analytes and transistor surface, and improving the structures of device.
Yuying Zhou +8 more
wiley +1 more source
Bajo el negro velo de la ilegalidad. un análisis del mercado de esclavos dominicano 1746-1821
Nuevo mundo - Mundos Nuevos, 2016 The Dominican slave market was affected by illegality at the end of the colonial period. Difficulties to implement a legal slave trade and the different slave codes who ruled Santo Domingo after 1795 caused the slaveholders reaction.
José Luis Belmonte Postigo
doaj +1 more source
Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells
Advanced Energy Materials, EarlyView.Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang +6 more
wiley +1 more source
AlmanackResumo Este artigo aborda a temática da abolição do tráfico de escravos realizado no Atlântico Sul. Cumpre destacar que o estudo que aqui se apresenta não traz uma discussão a partir do enquadramento das relações diplomáticas anglo-brasileiras com a ...
Gilberto da Silva Guizelin
doaj +1 more source
A dinâmica da escravidão no Brasil: resistência, tráfico negreiro e alforrias, séculos XVII a XIX
Novos Estudos CEBRAP, 2006 O artigo examina as relações entre o tráfico negreiro transatlântico para o Brasil, os padrões de alforria e a criação de oportunidades para a resistência escrava coletiva (formação de quilombos e revoltas em larga escala), do final do século XVII à ...
Rafael de Bivar Marquese
doaj +1 more source
Culture & History Digital Journal, 2023 The article explores the reorganization of the Portuguese slave trade in Angola in the early eighteenth century when an upsurge in traffic took place along with a gold mining boom in Brazil.
Maximiliano M. Menz
doaj +1 more source
Confinement of Slave-Particles in U(1) Gauge Theories of Strongly-Interacting Electrons [PDF]
, 1999 We show that slave particles are always confined in U(1) gauge theories of interacting electron systems. Consequently, the low-lying degrees of freedom are different from the slave particles. This is done by constructing a dual formulation of the slave-particle representation in which the no-double occupany constraint becomes linear and, hence, soluble.
arxiv +1 more source
Stringency and dissimilarity of Maximum Residue Levels affect bilateral agri‐food trade stability
Applied Economic Perspectives and Policy, EarlyView.Abstract Food standards are rising in both prevalence and stringency. They protect consumers and may enhance demand stability but also pose compliance challenges to producers, with ambiguous effects on the stability of trade relationships. We analyze the impact of importers' Maximum Residue Levels (MRLs) along with bilateral MRL dissimilarity between ...
Helena Engemann +2 more
wiley +1 more source
Analytical slave-spin mean-field approach to orbital selective Mott insulators [PDF]
Phys. Rev. B 96, 125111 (2017), 2017 We use the slave-spin mean-field approach to study particle-hole symmetric one- and two-band Hubbard models in presence of Hund's coupling interaction. By analytical analysis of Hamiltonian, we show that the locking of the two orbitals vs.\,orbital-selective Mott transition can be formulated within a Landau-Ginzburg framework.
arxiv +1 more source
Advanced Energy and Sustainability Research, EarlyView.Hydrogen is an energy carrier, produced from renewable and nonrenewable resources. It can be stored in a variety of materials and transported to distant locations. This article reviews progress in hydrogen technology by looking at environmental and economic impact, cost analysis, and policy support at government level as way forward for bringing it to ...
Xuexue Pan +5 more
wiley +1 more source