In Algeria, Opuntia ficus-indica production is important. This seasonal fruit is a characteristic of arid and semiarid regions. Taking into account its high content in antioxidants, it has an excellent nutritional value. The aim of this research is the prickly pear morphological and physicochemical characterization study, which is widely present in the Arris (Batna, Algeria) area. The results of this experimental study are comparative to those of the same species from other world regions. The whole fruit weight is estimated to reach 63.38 g with a juice ratio of 71.42 %, a pH of 5.54, moisture of 89.3 % and a brix of 10.4 %. The quantitative amount of the phenolic compounds of the fruit revealed contents of 45.70 mg GAE / 100 g of MF for total polyphenols.

The complexity of systems in the current process industry is conducive to the concerns of industrialists about the risks that may be inherent in these systems. Risk reduction measures should be considered and implemented to reduce the initial risk to an acceptable level. This is usually achieved by using a combination of systems that provide security, inter alia, Safety Instrumented Systems (SIS). The implementation of a SIS requires the determination of its Safety Integrity Level (SIL) which it must have in order to attain the tolerable risk. The standards IEC 61508 and 61511 provide a framework for the determination of SIL and propose different methods. The objective of this work consists in proposing an approach of allocation and optimization of the security barriers, using the methods of risk graph and LOPA (Layer Of Protection Analysis) In order to evaluate the performance of the safety measures put in place for the control of risks in a hydrocarbon storage station. A cost benefit analysis (CBA), as a decision support tool, is carried out to improve the safety level of the process studied.

A three-dimensional finite element method (FEM) simulation was carried out in order to

exploit a new resurfacing prothesis design named MARMEL, proposed by a recent study with Co–Cr–

Mo material [1], for comparing a hip uncemented resurfacing with a novel carbon fiber/polyamide 12

(CF/PA12) composite to Co–Cr–Mo hip resurfacing implant.

From FE analysis, the von Mises stress range for the Composite hip resurfacing was much lower than

that in the Co–Cr–Mo hip resurfacing implant used in this comparison.

These outcomes showed that the biomimetic MARMEL hip resurfacing had the potential to reduce stress

shielding and prevent from bone fracture compared to conventional hip resurfacing implants.

Un cuiseur solaire boîte à surface réceptrice inclinée (CSBSRI) a été développé et testé à l’Unité de Recherche Appliquée en Énergies Renouvelables, sous les conditions climatiques de Ghardaïa, Algérie. Les performances thermiques du cuiseur sont analysées selon la procédure internationale de Mullick en termes de deux paramètres (F1, F2), le temps d’ébullition est calculé et la courbe caractéristique de notre cuiseur est également déterminée. En outre, les valeurs de puissance de cuisson sont calculées à partir des tests expérimentaux réalisés suivant le standard international de Funk et représentées en fonction de la différence de température entre l’eau et l’ambiance. Le cuiseur solaire réalisé, permettant une bonne interception des rayons solaires démontre de meilleures performances thermiques comparées à d'autres cuiseurs boîtes existants.

Prediction of effective properties for multiphase composite is very important not only to analysis and optimization of material performance, but also to new material designs. In this paper, the effective elastic property of some complex particulate composites is analyzed and compared with numerical results, demonstrating the validity of the proposed approach. We propose the equivalent morphology concept for the numerical homogenization of random composites. In this study, this concept is extended for complex material. A home script based on Python codes is made to automate the generating of Representative volume element with various volume fraction.

Les technologies utilisées dans les systèmes de transport intelligents varient, allant

de systèmes de gestion basiques

comme les systèmes de gestion des carrefours à

feux, les systèmes de gestion des conteneurs, les panneaux à messages variables,

radars automatiques ou la vidéosurveillance aux applications plus avancées qui

intègrent des données en temps

-

réel avec ret

ours d'informations de nombreuses

sources, comme les informations météorologiques, ...etc.

Cet article donne un

bref

aperçu sur

une

gestion intelligente des carrefours à feux

utilisant des capteurs sans fils

The factors and mechanism which control the spatial patterns of heavy metals in groundwater and their effect on human health could be identified with multivariate statistical methods and human health risk assessment. Sampling wells are statistically classified into two cluster based on the similar characters in groundwater quality using Q-mode cluster analysis (Q-mode CA). Two significant factors were extracted by principal component analyses (PCA), explaining 64.19% of the total variance. These factors were in turn described by the clusters 1 and 2, respectively, resulting from the R-mode CA. PCA and CA revealed significant anthropogenic contributions and water-rock interaction effects of the metals in groundwater. Health risk assessment factors including chronic daily intake (CDI) and hazard quotient (HQ) indices were computed for child and adult. The HQ indices of Cd and Pb in the both child and adult cases showed the value greater than the safe limits, which cause the harmful health hazards and potential non-carcinogenic health risks to the human. Spatial variability maps using ordinary kriging show that safe zones are mainly covered the west and south-western parts of the study area, while the contamination zones are found to be concentrated in the east, north, and south-eastern parts of the plain. The indicator kriging maps show highly uneven spatial pattern of Pb and Cd concentrations. The probability maps reveal that more than 50% of the total area possessed the highest probability (0.8–1.0) of exceeding the threshold values for Cd and Pb.

The Removal of noise and restoration of signals has been one of the most interesting researches in the field of signal processing in the past few year. In this paper, we have tested various deconvolution algorithms proposed in literature, using denoised signal (by wavelets techniques in our case) instead of measured one which is the real signal degraded by measurement procedure. It is very difficult to compare algorithms because the results obtained depend heavily on signal quality (signal-to-noise ratio, sampling), and on algorithm parameters and optimizations. Which criteria should be used to compare signals? Our algorithm which based on Tikhonov-Miller regularization and a model of solution, is a iterative algorithm, gives best results without artifacts and oscillations related to noise, and achieves higher-quality denoising and a high restoration ratio for noisy signal than the existing methods.