This work concerns the study of the species Volutaria lippii syn. Centaurea lippii,
belonging to the Asteraceae family; a plant of the Algerian flora which has been the subject of very few previous studies. Our work began ...
The aim of this work is to study and to compare the degradation of two anionic azo dyes (Methyl Orange (MeO) and Acid Red 14 (AR14)) in aqueous solution, by various advanced oxidation processes (AOPs) in homogeneous and ...
This work is devoted to the phytochemical study; structural determination and biological evaluation of natural substances isolated from a species of the Lamiaceae family: Thymus munbyanus subsp. ciliatus (Desf.) Greuter & ...
The objective of this work is to control the different parameters involved in the synthesis, by the hydrothermal method, of nanoparticles of ZnTe and ZnSe semiconductors in
order to use them as a filler and incorporate ...
Considered as the energy transporter of the future, hydrogen seems to be the miracle
solution to overcome the current energy and environmental crisis. This may be true provided that all the problems underlying in its life ...
In this thesis, we consider the problem of the nonparametric estimation of the regression function when the response variable is real and the regressor is valued in a functional space (space of infinite dimension), by using ...
If a problem has a unique solution, but this solution is not continuous with
respect to small variations of data this problem is ill posed. The methods used to
stabilize ill-posed problems are known to stabilize.
The ...
This work is a contribution to the understanding of the phenomena occurring during
the continuous heating of an Al-Mg-Si alloy plastically deformed. Thus, the effect of plastic
deformation at two temperatures (cold and ...
The work presented in this thesis concerns the synthesis and study of structural and optical properties by two different approaches; experimental and theoretical, of new complexes of Schiff bases (SIC and NIC) coordinated ...
The research work was carried out at the Environmental and Structural Molecular Chemistry Research unit of the University Constantine 1. The purpose of this works is the synthesis of new hybrid materials formed in two ...
This work deals with Ni/MgO intended for use as antibacterial agents. The samples were
prepared by impregnation (named NMI) followed either by irradiation under 60Co radiation
(NMR) or calcined at T ≥ 100°C (NMC(T)).
Various ...
The thesis aims to systematically extend recent observations indicating that the molecular conformation and certain vibrational modes of polysubstituted benzenes vary strongly when their environment varies. The molecules ...
This work aims to study and model the sorption of boron and rhodamine B, from their aqueous solutions, by a natural, unconventional, low-cost and locally available biomaterial: olive pomace. The effects of the operating ...
Structure and spectroscopy of halogeno-methyl of benzene
products of biological interest
In the interest of research on biologically active organic products, our thesis work
consists of a spectroscopic and structural ...
This manuscript describes the reductive removal of silyl groups from N-protected indoles,
using indium, magnesium, zinc and fer processes and new method for synthesis an N-tertButanesulfinylimines. In the main part: ...
Samples of pure zinc aluminates (ZnAl2O4) and doped ZnAl2O4 with both lead (Pb2+)
at different ratios (0, 0.5, 1, 1.5, 2, and 2.5% mol) and a constant amount of lanthanum
(La3+: 1% mol), were prepared by the citrate ...
This work is a contribution to the quantification and simulation of primary recrystallization in
IF steels. IF steels are alloys with high drawing capacity and are intended for the automotive
industry. To do this, we ...
Nicotiana glauca Graham (Solanaceae), or tree tobacco, is found in dry arid climates
of North America, Africa and Europe. It has been reported to have both toxic and
medicinal properties. The main aim of this study was ...
The corrosion inhibitions of mild steel in 0.5M H2SO4 solution by synthetized 5-(Phenyl)-4H-
1,2,4-triazole-3-thiol (5-PTT) and 5-(2-hydroxyphenyl)-1,3,4-oxadiazole-2-thiol (5-HOT) inhibitors
have been investigated by ...