Free convection flow of non-Newtonian fluids over flat, heated surfaces is an important natural phenomenon that also occurs in human-made engineering processes under various physical and mechanical situations. In the current study, free magnetohydrodynamic Jeffrey fluid with heat mass transfer infinite vertical plate examined. Mathematical modeling performed using Fourier’s Fick’s laws, momentu...

The lack of an initial condition is one the major challenges in full-wave-equation depth extrapolation. This vertical partial derivative surface wavefield and cannot be provided by conventional seismic acquisition system. traditional solution to use value calculate assuming that velocity constant. However, for exploration on land, often not uniform. To solve this problem, we propose a new metho...

Abstract This paper presents a well test interpretation methodology using characteristic points and lines found on the pressure derivative versus time log–log plot for characterization of finite-conductivity fractured vertical hydrocarbon in double-porosity (heterogeneous) formation considering new practical analytical Laplacian model which require less computational have more accuracy than sem...

Efficient wholesale markets should drive preference revealing bidding where generators offer the majority of their power at short run marginal cost (SRMC). However, most renewables have very low SRMCs, which in a competitive market is likely to lead to an increasing proportion of low priced periods. This has led to suggestions that a capacity market may be required in the Australian National El...

Indonesia is located at the confluence of three plates, namely Eurasian, Indo-Australian, and Pacific plates which causes formation an active fault line. One these faults Palu-Koro fault, Sulawesi, with a shift rate 30-44 mm/year. A geophysical method such as gravity determines fault’s characteristics. Gravity data processed by derivative analysis process in form First Horizontal Derivative (FH...

Nonylphenol polyethoxylates (NPEOs) is an important kind of nonionic surfactant widely used in the manufacturing and life of human beings. A second derivative ultraviolet spectrum method was established for the determination of the total NPEOs (the average n was 10) in microbial degradation water samples, and the optimal experimental conditions were studied. Water was used as the solvent. The d...

In this paper, unsteady flow of fractionalized Maxwell fluid over an inclined vertical plate is considered by using thermo diffusion and slip effects. The model solved Constant proportional Caputo fractional derivative. Initially, the governing equations are made non-dimensional then Laplace transform. To see impact different parameters on velocity, temperature concentration, we have drawn some...

Pada penelitian ini dilakukan identifikasi struktur bawah permukaan sekitar Gunung Tandikat dengan metode gravitasi. Penelitian bertujuan untuk mengidentifikasi jenis batuan dan patahan anomali bouguer lengkap. Data yang digunakan merupakan data Free Anomaly Air (FAA) topografi dari web TOPEX total titik pengamatan berjumlah 49 titik. FAA Topografi diolah menggunakan software global mapper, oas...