The tropical region is often considered as a where the sun shines intensely and temperature varies at certain times of year. In case Congo, average weather condition cool, however, there have been cases reached up to 43° C. It therefore imperative for buildings in this take into account variation while considering comfort users. During design construction Bank Belgian availability data assist a...

objective: achillea is a traditional medicinal herb which contains different phenol and flavonoid compounds that are responsible for achillea pharmacological effects. we aimed to determine phenol and flavonoid contents, besides antioxidant activities of different extracts from achillea eriophoraa (a. eriophora) dc. and achillea biebersteinii (a. biebersteinii) afan. (endemic species in iran) an...

Resumo O artigo analisa a internacionalização da estrutura produtiva industrial brasileira, ampliada e aprofundada durante década de 1990 início dos anos 2000, com o objetivo avaliar se esse processo foi benéfico para desenvolvimento nacional. Enfatiza-se comércio intrafirma das empresas capital estrangeiro indústria transformação partir dados do Censo Capitais Estrangeiros Banco Central Brasil...

Future high-performance wireless communication applications such as wireless local area networks (WLANs) around 5 GHz require low power and high quality integrated transceiver solutions. The integration of RF front end especially poses a great challenge to these applications as traditional system on chip (SOC) approach is quite inefficient. A system on package approach can address the problems ...

With the methods of barycentric coordinates, we establish several collinearities in the heptagonal triangle, formed by a side and two diagonals of different lengths of a regular heptagon. 1. The regular heptagon Consider a regular heptagon AA′C ′A′′BCB′ inscribed in a circle, each side of length a. The diagonals are of two kinds. Those with 3 vertices on the defining minor arc have the same len...

A 220GHz solid-state power amplifier MMIC is presented, simultaneously demonstrating 55.5mW output power Pout at 17.0dB compressed gain (1.12mW Pin). The maximum saturated Pout is 60mW at 14.0dB compressed gain (2.36mW Pin). This 3-stage, 4-cell amplifier has 26.8dB S21 gain at 220GHz, with 3-dB small-signal bandwidth from at least 210GHz to 235GHz. PDC is 3.38W. Amplifier cells were fabricated...