Direct high sensitive spectrophotometric method for determination
Ni(III) has been suggested . proposed method is based on the
formation of red- win colored complex between Ni(III) and DMG
reagent in strong alkaline media of NaOH ,pH=12.5.the formed
complex absorbed electromagnetic radiation at 465nm .
This paper includes was clarified the objectives of this study and
the problems caused by gas hydrate formation problem in the
studied gas transportation lines, and submit of the studied fields,
contains all the required data in this research.
The rural roads are a large part of the existing roads network, particularly that
consisting of two-lane. Evaluation of traffic performance for two-way, two-lane rural roads
is complex process due to their characteristics. Many performance measures
were
introduced by many authors in many countries to fit the local conditions.
This research presents an empirical evaluation of the relationship between
operational performance and platooning phenomenon in rural two-lane roads in Tartous.
Six performance measures and three platooning variables were defined and calculated for
ten study sites using traffic data from rural roads in Ash-Shaykh Badr region of Tartous
governorate. Using graphical and statistical analyses, the associations between the
performance measures and the platooning variables were examined.
The platooning variables investigated, traffic flow in the direction of travel has the
highest correlations with performance measures. As the overall findings confirmed that the
follower density is the most characterization of the relationship between traffic
performance and platooning, which is suitable for the study of operational performance.
The objective of this research is to propagate Mentha puligium in
vitro, shoot tips and nodal explant were planted with 0.5-1 cm length
on MS (Murashige's and Skoog) medium with various concentrations
(0.5-1-2-3-4) mg/L of cytokinin BAP.
In this paper, a proposal a chemical solvent to remove sulfur deposits within the tubes production of the wells that most suffer from this problem are done. Where the study was conducted on the referenced study about the characteristics and forms of
sulfur in the nature, and explain the Scheme phasic of sulfur and required conditions for the deposition of elemental sulfur within the tubes production. And has been clarified the mechanism of deposition and the outline of a simplified process for the nuclei of molecules from supersaturation sulfur vapor. Has also been depend on the field data of the studied wells /Jbissah-223, Jbissah-220/ (taken from the daily operational reports and Historical Biography of the wells), to conducting laboratory experiments in order to compare the between used solvent at field (NaOH) and proposed solvent (tallow amine activated diethyl disulfides) in this study in terms of the melt the deposited sulfur within the tubes production. and as a result, the curves resulting from the comparison process was drawn and recommending the use of the proposed solvent in treatment the acid gas wells in Jbissah fields that suffer from this problem where this solvent is the most effective and economical.
The objective of this research isto study the in vitro effect of some plant hormones
(growth regulators) BAP,NAA, 2,4-D, and genotype on callus and bud formation from
embryonic axes of two Soybean cultivar seeds (sb-44, sb-172).
The embryonic axes
were cultured on MS basal medium and MS supplemented with
1, 2, 3 mg/l BAP alone and in combination with 0.5 mg/l NAA.The cultures were
maintained at 25 C°±1 with photoperiod of 16 hours light (2000-2500 lux) and 8 hours
dark.The highest percentage92.5% and mean average 4.63 of callus formation were
recorded on MS medium containing BAP (3 mg/l) and NAA (0.5 mg/l).
The highest percentage 67.5% and average 3.38 of buds formation were obtained on
MS medium supplemented 1 mg/l BAP and 0.5 mg/l NAA in cultivar sb-44.
The percentage of callus formation increased, while the percentage of bud formation
decreased with each increase in BAP concentration when used alone. A positive increase
was observed in all mediums in the combination of 0.5 mg/l NAA or 0.5 mg/l 2. 4-D in the
two cultivars used in this study.
This study showed the genotypic difference effect on callus and bud formation.Roots
were formed from allplantlets cultured on MS medium without plant hormones.Rooted
plantlets were transferred into pots with nutrient soil, irrigated with water, and adapted
tolaboratory conditions. Good plants grown to maturity were obtained in 12-13 weeks.
In this paper we present a study of ZnS thin films thermally deposited on
glass substrates, with different optical thicknesses. On topography micrographs
and feature parameters obtained by Atomic Force Microscope, we pursued the
islands formation
and growing in ZnS thin films even on the same optical
thickness of the film. For doing so, we analyzed the micrographs surface, using
Watershed Segmentation and Wolf pruning that allow the detection of
significant features on surfaces, Grain sorting operator and Parameter
Distribution Study.
Bone neoformation is primary importance for the success of maxillofacial
surgical treatments. and there are various methods to reach this aim as the physical methods including the
usage of electrical , electromagnetic & static magnetic field due to
its effect on bone.
Aim of study to investigate, the effect of a static magnetic field on the density of bone and osteoblast ,
without bone graft, With auto graft and With hidroxiapatite.
دراسات كوانتية لخصائص الانتقالات النووية : قمنا في هذا البحث بتحديد متعددات أقطاب أشعة غاما المرافقة لتفاعل نيوترونات حرارية مع النوى
Amelogenins from ameloblast play an important rule in differntiating
odontoblasts in dental papilla, suggesting that amelogenins may associate with odontoblasts changes
during development.
Aim In the present study we have investigated the effects
of enamel matrix derivative (EMD) on the
healing of pulpal wound and formation of reperative dentin.
