Dipole sonic log data recorded in a vertical pilot well and the associated production well are analyzed over a 200 × 1100-ft section of a North American gas shale formation. The combination of these two wells enables angular sampling in the vertical direction and over a range of inclination angles from 54° to 90°. Dipole sonic logs from these wells show that the formation’s average properties a...

Overview Let ∆ABC be a triangle, and let the radian measure of these angles bem(]CAB) = 3α, m(]ABC) = 3β, and m(]BCA) = 3γ, so that α+ β + γ = π/3.1 We trisect each (interior) angle of the triangle, and take the intersections of the proximal or adjacent trisectors; for example, to choose the intersection between a trisector of the angle at A and the angle at B, we choose the trisector from A cl...

Errors in the flip angle have to be corrected in many magnetic resonance imaging applications, especially for T1 quantification. However, the existing methods of B1 mapping fail to measure lower values of the flip angle despite the fact that these are extensively used in dynamic acquisition and 3D imaging. In this study, the nonlinearity of the radiofrequency (RF) transmit chain, especially for...

introduction: determining the proper angle for inserting central venous catheter (cv line) is of great importance for decreasing the complications and increasing success rate. the present study was designed to determine the proper angle of needle insertion for internal jugular vein catheterization.  methods: in the present case series study, candidate patients for catheterization of the right i...

Background. Performing skilful movement patterns during sport practice sessions and real competition can cause negative adaptations in the musculoskeletal system. Objectives. The aim of this study was to investigate the incidence of postural abnormalities of the spine and shoulder girdle among professionals practising Sanda in Mazandaran province. Methods. Forty professional Sanda athletes pa...

BACKGROUND Neurological injuries or disease can impair the function of motor circuitry controlling forearm supination, and recovery is often limited. Preclinical animal models are essential tools for developing therapeutic interventions to improve motor function after neurological damage. Here we describe the supination assessment task, an automated measure of quantifying forelimb supination in...

Aim: To estimate the value of mentolabial angle in local Gujarati adults with acceptable facial profile. Materials & Methods: A cross sectional study was carried out to estimate the value of mentolabial angle on standardized digital photographs of Gujarati population (25 males and 25 females) between the age 18-25 years having well-balanced, acceptable and symmetrical face as judged by a group ...

We show that the fractal growth described by the dielectric breakdown model exhibits a phase transition in the multifractal spectrum of the growth measure. The transition takes place because the tip splitting of branches forms a fixed angle. This angle is eta dependent but it can be rescaled onto an "effectively" universal angle of the diffusion-limited aggregation branching process. We derive ...