OBJECTIVE To examine differences in bone mass between children and adolescents swimming competitively at nonelite levels (locally and regionally) and nonathletes and to assess changes in bone mass in these 2 groups over 24 months after taking into consideration several known confounders of bone mass. DESIGN Observational prospective study. PARTICIPANTS White nonelite swimmers (n = 128) and ...

Feeding Ecology and Pest Status of the Mole rats (Tachyoryctes splendens) in Farmland, Masha, Southwest Ethiopia Yidnekachew Arega Terefe Addis Ababa Univertsity, 2017 A study on the abundance, distribution, feeding habit, pest status and impacts of mole rats on agricultural productivity was carried out on the farmlands of Masha during July, 2016 ─ February, 2017. Two study sites (Beto and Gemb...

Angular distributions of protons, deuterons, tritons and a-particles were measured for the system 9Be+"C at lab energies between 12 and 27 MeV. The compound nucleus model with level densities calculated according to the Gilbert-Cameron formula describes satisfactorily the measured proton, deuteron and triton data. In the a-particle spectra contributions from other processes seem to be present ....

Biomass is a primary source of renewable carbon that can be utilized as a feedstock for biofuels or biochemicals production in order to achieve energy independence of energy importing countries. The low bulk density, high moisture content, degradation during the storage, and low energy density of raw lignocellulosic biomass are all significant challenges in supplying agricultural residues as a ...

The use of technology can be seen as an innovative challenge to restructure the teaching-learning process and integrate Information and Communication Technologies (ICTs) in independent, collaborative and interactive work. The main purposes of this study are to understand users’ needs and to identify their profiles, in order to empower the quality of online teaching-learning process. Identifying...

This paper addresses the problem of negotiation in a complex organizational context and tries to bridge the gap between self-interested negotiation and cooperative negotiation. An integrative negotiation mechanism is introduced, which enables agents to choose any attitude from the extremes of self-interested and cooperative to those that are partially self-interested and partially cooperative. ...

Variation in available energy content (MJ/kg DM) of Australian cereal grains has been examined across sheep, cattle, pigs, broiler chickens and laying hens. There were only small differences in the available energy content of individual grains across animal types, except for the low energy content of sorghum for cattle. Much of the variation between grains could be explained by gross chemical c...

Background & Aim: Energy is one of important debates in agriculture ecology and for this reason; the ratio of output and input energy in different agriculture ecosystems has been calculated. If one can reduce, input energy level into farms through the indices like poisons, fertilization, tractor energy and lab our force. In addition to the net income of the farmers, this issue would play a sign...

Future weak lensing surveys will directly probe the clustering of dark matter, in addition to providing a test for various cosmological models. Recent studies have provided us with the tools which can be used to construct the complete probability distribution function for convergence fields. It is also possible to construct the bias associated with the hot-spots in convergence maps. These techn...

In this paper, the concept of ‘‘productive energy’’ as a substitute for conventional labour is examined historically, theoretically and empirically. Over the course of the last centuries, productive energy has been substituted for human, muscleand brain-based work, providing the wherewithal for the phenomenal growth in material wealth in Western societies. In this era of rising energy costs and...