EFFECT OF Salsola vermiculata

Algerian aride zone is rich with medicinal plant, Salsola vermiculata is one of the mosttraditional plant remedies in Bechar region. in this work, we tried to test the inhibitory effect on eight storage soft wheat fungi of various extracts of Salsola vermiculata in vitro and vivo by using grain storage by the coating method. The phytochemical screening of plants showed the detection of tannins, saponisides and flavonoids. The results show a remarkable antifungal effect by most of the extracts tested. The  decrease in the level of fungi observed in wheat samples demonstrates the effectiveness of grain storage by the coating method.Keywords: Salsola vermiculata; Antifungal activity; Coating method; Fungi; soft wheat;Storage

Modelling Temperature Variation of Mushroom Growing Hall Using Artificial Neural Networks

The recent developments of computer and electronic systems have made the use of intelligent systems for the automation of agricultural industries. In this study, the temperature variation of the mushroom growing room was modeled by multi-layered perceptron and radial basis function networks based on independent parameters including ambient temperature, water temperature, fresh air and circulation air dampers, and water tap. According to the obtained results from the networks, the best network for MLP was in the second repetition with 12 neurons in the hidden layer and in 20 neurons in the hidden layer for radial basis function network. The obtained results from comparative parameters for two networks showed the highest correlation coefficient (0.966), the lowest root mean square error (RMSE) (0.787) and the lowest mean absolute error (MAE) (0.02746) for radial basis function. Therefore, the neural network with radial basis function was selected as a predictor of the behavior of the system for the temperature of mushroom growing halls controlling system

Crystal phase induced direct band-gap modifications in bulk GaP and GaAsP

International audienc

Minimization methods for emissions generated from sinter strands: A review

The agglomeration of iron ores or fine-grained recycled high-grade iron materials is an essential part of the integrated iron and steelmaking process. The 15 European countries produce more than 100 Mt of sinter per year. However, environmental regulation is becoming more stringent, and therefore, sintering plants are under pressure to minimize their generated emissions, because they are the most polluting processes. Different possibilities have been suggested to solve this problem, e.g. using imported pellets or briquettes in blast furnace or to use EAF process. Such changes are very expensive and also delete the recycling route of the by-products, thereby creating an additional treatment or disposal problem. In this paper, different methods for minimizing emissions generated from sinter strands are reviewed. © 2005 Elsevier Ltd. All rights reserved.Peer Reviewe

Psicon-A Simulation Package for the Design of Digitally Controlled Systems

A simulation language is described which is based on a block-oriented continuous systems simulator called PSI. Using the message transfer capability of the multi-tasking operating system of s mini-computer, external digital control algorithms can be developed rapidly in Fortran, while retaining the advantages of a flow chart based and precompiled structure of the continuous simulation language...

Synergistic adsorption of lanthanum ions and fatty acids for efficient rare-earth phosphate recovery: Surface analysis and ab initio molecular dynamics studies

International audienceRare earth elements (REE) are indispensable in our daily life but they naturally occur in minerals, which are generally difficult to concentrate by the froth flotation method. Considering the significant affinity of lanthanum ions for phosphate species as well as for carboxylate groups, the influence of a lanthanum salt (LaCl3) on the adsorption of carboxylate species on monazite surface [(La,Ce,Nd)PO4] was investigated by bubble/particle adhesion tests, X-ray photoelectron spectroscopy (XPS), and atomistic simulations based on density functional theory (DFT). Both theoretical and experimental results demonstrated that lanthanum ions adsorb on the phosphate groups of monazite surface under the LaClCO3 form with a significant adsorption energy. Also, the hydrophobization of the monazite surface with fatty acids is considerably improved in presence of LaCl3, which is in accordance with DFT calculations: the lanthanum ions pre-adsorbed on monazite surface act as highly attractive adsorption sites for carboxylate collectors. In particular, these bridging cations significantly increase the adsorption energy of carboxylate collectors, from 344 to 420 kJ.mol(-1) in absolute value. This synergistic adsorption will allow developing new methods for efficient monazite recovery from complex ores, a promising step for the recovery of critical raw materials