The simplicity of solar chimney power plant (SCPP) makes it very attractive for generation. This paper investigates the technical feasibility using a locally-produced plastic film (Low-Density Poly-Ethylene “LDPE”) as collector cover. idea is to combine low-cost material with simple solution. As LDPE subject deterioration, effect aging on initial properties used analyzed. Natural was privileged...

The family of secretory calcium-binding phosphoproteins (SCPPs) have been considered vital to skeletal tissue mineralization. However, most previous SCPP studies focused on phylogenetically distant animals but not on those closely related species. Here we provide novel insights into the coevolution of SCPP genes and fish scales in 10 species from Otophysi. According to their scale phenotypes, t...

We study a problem in the area of multicast networks, called the Streaming Cache Placement Problem (SCPP). In the SCPP one wants to determine the minimum number of multicast routers needed to deliver content to a specified number of destinations, subject to predetermined link capacities. The SCPP is known to be NP-hard [1] and also MAX SNP hard [2]. We improve the approximation results for this...

The study aimed at analyzing the structure, conduct and performance of fish market in Lake Zeway, Central part of Ethiopia. A total of 24 traders from 6 markets were selected for the study purposively. Data analysis was carried out using descriptive statistics, for Structure, Conduct and Performance (SCP) approach. According to the results, there were five kinds of fish marketing chains in the ...

Three-dimensional numerical simulations are performed to investigate the effects of pressure drop across the turbine and solar radiance on the performance of a solar chimney power plant (SCPP). The SCPP system expected to provide electric power to a city is located in southern region of Iran (city of Lamerd, Fars province). Its dimensions are similar to the Manzanares prototype (built in Spain,...

The present work involves a new and novel upgrading design to the classical solar chimney power plant (SCPP) structure. SCPP was modified by adding co-centric secondary external structure enhance energy production. In improved design, named double-chimney (SDCPP), internal chimney, operates like traditional produce electricity during daytime whereas as 10 cooling towers (CT) in series. Each CT ...

Vertebrate mineralized tissues are vital to the adaptive evolution of various traits. Among these traits is the tooth, which consists of two characteristic mineralized tissues, a highly mineralized surface layer (enamel in tetrapods and enameloid in fish) and a softer body (dentin), both supported by basal bone. However, enamel and enameloid are significantly different in development, and denti...

Housing policies in many countries have become more market orientated as the role of governments has shifted from the direct supply and funding of non-market housing towards the role of a regulator and facilitator. Central to this development is the notion that providers of social housing have to become more competitive. Arguably, these social housing changes have important implications for the...