A Study about Finding Exact Solutions for Zeldovich Equation with Time-Dependent Coefficients by Using the Tanh Function Method

In this work, we have been found explicit exact soliton wave solutions for Zeldovich equation with time-dependent coefficients, by using the tanh function method with nonlinear wave transform, in general case. The results obtained shows that these exact solutions are affected the nonlinear nature of the wave variable, it is also shown that this method is effective and appropriate for solving this kind of nonlinear PDEs, which are models of many applied problems in physics, chemistry and population evolution.

Using Box-Jenkins Methodology for Forecasting labor Productivity in commercial bank of Syria – Jabla branch

The objective of this research is to analyze the time series of labor productivity in the Commercial Bank of Syria for a period of ninety days. The pattern of change in productivity is identified in order to construct a model that helps predict the values of productivity. So we used Box Jenkins models in this study by using statistical methods Such as the ADF, PP KPSS and Q stat tests to detect that the series is Non stationary, but when the first difference was taken, the series becomes stationary, and confirmed by the same previous tests. A series of time series models were then filtered based on Autocorrelation (ACF) and Partial Autocorrelation(PACF). After selecting between several candidate models, by applying some statistical methods such as MSE and BIC, we selected the best time series model ARIMA (1,1,1). The significance of its coefficients was determined using t

Spatial -Temporal variations of the carbon dioxide system in the surface seawater of Tartous city

This research focuses on identifying spatial and temporal variationsof the carbon dioxide system in the surface seawater of Tartouscityduring the period betweenspring and summer 2015.In Addition to the extent influenced by some hydrological properties of water (temperature and salinity) and the impact all of this on the pH of marine water values. The results showed low partial pressure of the carbon dioxide in seawaters (PCO2 sea) in the summercompared with spring, which is reflected on the air-sea flux values (FCO2), where CO2 released from surface seawater to the air in summer and incontradiction of that in the spring (0.0632mmol /m²/ day and -0.0715 mmol /m²/day, respectively). In spring, low temperature and salinity of the water (22.707-22.727C and 37.605-37.765‰ respectively), in addition to increased biological activity contributed in increasing the absorption of CO2 from the water.These leading to a decrease PCO2 sea (409.0- 429.5μatm) associated with low concentrations of all of the total inorganic carbon (2229.5- 2242.5μmol/kg) and total alkalinity (2588.873-2590.9μmol/kg). and as a result the surface sea waters become a reservoir of dioxide carbon atmospheric. In the summer, the rise in temperature and salinity of surface seawater (28.85- 29.60Cand38.15-38.60‰, respectively) and reduced biological activity all contributed to the decrease dissolved CO2 values and increase of PCO2 sea(437.5 - 453.5μatm) associated with increasing concentrations of each of the total inorganic carbon (2267.9 - 2296.0μmol/kg) and total alkalinity (2739.6 -2741.2μmol/kg).In this way the surface sea water is source of carbon dioxide to the atmosphere.

Nature of the problem of hegel

Find sheds light on the problem perhaps more importantly, the total problems that we find in the history of philosophy , and is not a problem of nature Our research is trying to explore the meaning of the nature of the Beginnings, As we will try to, In this research dealt with the nature of the problem of the two sides Systematic and cognitive To find out the key points of the nature of the problem when the philosophers of the seventeenth century To try to adjust the nature of the problem in its historical context As we will try in this research shed light on the relationship between nature and other problems In the philosophy of Hegel, such as the relationship , for example, between nature and logic, nature and absolute idea. Is Hegel was able to solve the problem of nature and its relationship with the various aspects of his philosophy؟ Or is it Al this problem and do so by him Kant There is also in our many other problems discussed by Hegel with nature problem.

Numerical Solution of Non-linear System of Partial Differential Equations by Using HPM Method

In this article, we propose a powerful method called homotopy perturbation method (HPM) for obtaining the analytical solutions for an non-linear system of partial differential equations. We begin this article by apply HPM method for an important models of linear and non-linear partial differential equations.

Later results for treatment of intracapsular femoral neck Fractures in alt Patientes (after 1-2 year) by using partial prothesies (Bipolar)

The study included 25 patients were followed up for two years joined together. The number of females ranged from 18 patients percentage of 72%, the number of males ranged 7 patients by 28%. The incidence of these fractures in women more than men by 3/1, especially in the seventh and eighth decades where we note in this Study, a good results in females. Muscular weakness occur after surgery due to lack of use, and muscular weakness continue for a period of two years after the surgery, which suggests the use of exercise for a long time . There is a noticeable improvement in two years after the surgery for intracapsul femoral neck fractures within the portfolio in terms of clinical and functional findings, in addition to the improvement in activities of daily routine (functional) for the patient compared to the same segment of the patients one year after surgery. The early treatment and movement as possible to strengthen the muscles of the lower limbs and improve the adjacent joint movement, the absence of lesions associated , the period of hospitalization least for so, technique of surgery, medical care and physical activities encourage are the most important facturs that have helped to warning and predictable, then we get agood results as we wont.

The distributive solutions for some partial differential equations of second order

This research studies the distributive solutions for some partial differential equations of second order. We study specially the distributive solutions for Laplas equation, Heat equation, wave equations and schrodinger equation. We introduce the fundamental solutions for precedent equations and inference the distributive solutions by using the convolution of distributions concept. For that we use some of lemmas and theorems with proofs, specially for Laplas equation. And precedent some of concepts, defintions and remarks.

Clasps In The Mandibular Implant Supported Removable Partial Dentures Class Ι

The initial retention of implant-supported removable partial dentures(ISRPD) is unknown. the purpose of this in vitro study was to compare maximum dislodging forces of distal extension mandibular ISRPD with three different clasp design. a stimulated class 1 partially edentulous mandible was prepared with two implant in the first molar regions and two metal ceramic on distal abutments. Fifteen bilateral distal extension frameworks was fabricated with three different clasp design (Akers, I bar clasp ,no clasp),each specimen was subjected to three type of retention pulls ( main ,unilateral ,posterior pulls) five time with universal testing machine.

New Exact Solutions for Generalized Fitzhug-Nagumo Equation by Homogeneous balance Method

In this work, we have found exact traveling wave solutions for generalized Fitzhug- Nagumo equation with arbitrary constant coefficients, by using the homogeneous balance method, The obtained results shows that these solutions changes with the specials solution of Ricati ODE with arbitrary constant coefficients , and shows that this method is simple, direct and very efficient for solving this kind of nonlinear PDEs, It can be applied to nonlinear PDEs which frequently arise in engineering sciences, mathematical physics and other scientific real-time applications fields.

Histologic Comparative Study Of The Relining Effect Of Bilateral Distal Extension Partial Dentures with Molloplast-B- On The Oral Mucosa Keratinization

The aim of this study is to evaluate the change in structure of oral mucosa after using the partial denture with semiprecision attachment or Molloplast-B-. Twenty patients, males and females, have been taken with age ranges between (40-71 years), and having Class 1 Kennedy in the mandible.