[en] In the Alpha-particle model, we can consider the equilibrium configuration of the four and the five alpha particles of ¹⁶ o and ²⁰ Ne respectively to be a tetrahedron belonging to the symmetry group T_d. Using Gaussian potential and with Hartree-Fock method, binding energy, root mean square radius and form factors are evaluated. A good fit to experimental data is achieved. 5 figs., 1 tab

[en] The total number of general protein bands separated electrophoretically in the full grown larvae of Phthorimaea Operculella to 8 bands. The number of these bands changed after treatment with different insecticides. The number increased to 10 bands after using diflubenzuron (d) whereas it decreased to 6 and 7 bands after using bioresmethrin (b) petroleum ether extract of Artimisia Absinthium (PE), respectively. exposing the full grown larvae to gamma irradiation alone (50 Gy) resulted in decreasing the number of bands to 7. The number of bands generally increased to 10, 11 and 9 when radiation was combined with bioresmethrin (B+R), diflubenzuron (D+R) or extract of Artimisia Absinthium (PE+R), respectively. The number 6 is considered as a major protein constituent since it was detected after the treatments with high relative concentration (R C). The band number 4 was found after all treatments except for B with low R C. The band number 7 was found after all treatments except for D and PE+R with high R C. Bands number 9 and 11 were detected after all treatments except PE and R, respectively with low R C. 2 figs., 2 tab

[en] The accumulated effects of irradiated materials in the mediterranean fruit fly (medfly), ceratitis capitata (Wied) offsprings resulted from successively irradiated generations of eggs, pupae or adults were evaluated . Results showed that successive irradiation affected only the biological parameters that concern with the genetic cells i.e. sterility and fecundity. On the other hand, parameters concern the somatic cells i.e. Survival, sex-ration and mating activity were not significantly affected

[en] In this work the safety valve piping system subjected to severe dynamic load has been investigated. Modal analysis is used to study a two inch globe valve used in a piping system of the nuclear and petrochemical industries. The finite element technique has been used to determine the fundamental natural frequencies of vibration ad stability of the valve body under seismic excitation. A simplified structure model to represent the valve body components has been used in this analysis. 4 figs., 1 tab

[en] Renal function may be determined by variety of radiopharmaceuticals. Mercaptoacetyltriglycine (MAG₃) is the best compound to determine the renal function with more image quality. There are some physical parameters which may affect the quality of imaging; such as matrix size and Acquisition time. The results show that there is no change in value of renal function but the quality of images was improved with smaller pixel size and the renogram curves were smoothed with summation of the frames until certain summation. Other parameters such as depth of the kidneys from skin surface and uptake of kidney were also discussed. 3 figs

[en] A quark potential composed of a colour confining part (V_conf) and a short distance part due to one gluon exchange (V_OGE) is suggested. The parameters of this potential are estimated by applying the IPM quark model to the experimental data of K^± p reactions at various energies. The energy dependence of the confining part is studied. Both linear and oscillator confining potentials are calculated and their results are discussed. 4 figs

[en] Alumina, titania and silica were prepared by an advanced wet chemical method, namely sol-gel process. Characterization of the obtained gel derived metal oxide powders, through their powder morphology using a scanning electron microscope (SEM), BET surface area measurements, simultaneous DTA and TG measurements, and X-ray diffraction analysis were performed. These measurements proved that the gel derived metal oxide powders produced by hydrolysis of metal alkoxides are of a very high reactivity, homogeneity, and fine particle size. The uptake behavior of the fabricated sol-gel powders for radioactive Eu (III) was studied. The experimental results showed that Eu (III) uptake on the prepared ceramic powders were of the order titania > alumina> silica. In addition the stability of these ceramic powders for Eu (III) uptake was examined through a desorption process of the adsorbed ions by distilled water. The desorption process proved also the stability of the materials used for Eu (III) uptake. 12 figs., 2 tabs

[en] Thirty six adult friesian cows were divided into two comparable experimental groups (18 cows each). The first group was exposed for two months to mild winter climate, meanwhile, the second one was exposed for a similar period to hot summer climate. Average ambient temperature was 19.5 and 35.0 degree C, respectively. Each experimental group was subdivided into 3 subgroups mainly dry cows, low yielders and high yielders, respectively (each subgroup = 6 cows). High yielders produced on the average 8 and 6 Kg milk/day versus 8 and 6 Kg milk/day produced by low yielders in winter and summer months, respectively. Blood samples were individually taken at the last week of the experimental period and plasma was carefully separated. Thyroxine (T₄), Triiodothyronine (T₃), progesterone (P₄), glucose, total protein, albumin, globulin, total lipids, cholesterol, and phospholipids concentrations were determined in the clear plasma. Average daily milk yield (DMY) was recorded at weekly intervals. The data revealed that the overall average of DMy, T₄, T_4/T₃ ratio, P₄ and blood glucose were significantly lower in summer samples than in winter samples. The opposite was true for T₃. Both T₄ and P₄ proved a regular response to heat stress condition in a similar pattern to that mentioned above. Dry cows exhibited significantly higher levels of T₄, T_4/T₃ ratio, P₄ and total lipids as compared to high lactating cows. This was true for P₄ and total lipids when the dry and low yielders were compared. Blood glucose, total protein and albumin concentrations showed an opposite trend where they were significantly lower in dry cows than in high yielders. Low yielders also had significantly lower concentrations of total protein and albumin than high yielders and lower total than dry cows.4 tabs

[en] Excitation of the surface waves due to a nonlinear interaction of electromagnetic waves obliquely incident upon a boundary of a dense magnetoactive plasma layer is investigated. We have considered a warm inhomogeneous plasma layer with very small thickness as compared to the wavelength of oscillations and the effect of an external dc magnetic field perpendicular to the propagation of the electromagnetic wave (Em) wave. The current density and the electromagnetic fields of generated surface waves at combined frequency of incident waves are calculated. It is found that the dispersion function for them depends on the width of plasma and both of the finite temperature of electrons the external magnetic field

[en] A new simple method is introduced by means of which one can explain and predict the abnormal composition dependence of the thermal diffusion factor α_T in some binary gas systems. The application of the method depends on analyzing highly accurate measurements of the viscosity coefficient according to the inverse-power model. The potential parameters thus obtained determine the behaviour of the thermal diffusion factor. 2 figs.,1 tab