To visualise the morphologic changes of a growing spiral pyramid, a mathematical model was developed and implemented in an algorithm that can loop through the sequential time-frames in a growth sequence. The algorithm simulates growth of spiral pyramids with geometries reflecting variation in the step velocity ratio and critical lengths of inequivalent steps. We have developed a new mathematica...

BACKGROUND As previously various studies have suggested application of brain-derived neurotrophic factor (BDNF) may be considered as a promising future therapy for hearing deficits, in particular for the improvement of cochlear neurone loss during cochlear implantation. AIM The present study's aim was to establish the upper threshold of the concentration of BDNF in Naval Medical Research Inst...

This paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. Different railways use different threshold radius from 91m to 365m to provide restraining rail. These threshold figures are probably experience driven choices. The need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...

Noise Coupling in Heavily and Lightly Doped Substrate from Planar Spiral Inductor Tony Yeung, Alan Pun, Zhiheng Chen, Jack Lau, Fran cois J.R. Cl ement Dept. of Electrical & Electronic Engineering, The Hong Kong University of Science & Technology Center for Integrated Systems, Stanford University, Stanford, CA 94305 Abstract| Recently, much studies have been done to include on-chip inductors fo...

H. Zhu, D. Rubin, Q. He Dept. of Physics and Astronomy, Univ. of Pittsburgh, Pittsburgh, PA, United States, Dept. of Radiology, Univ. of Pittsburgh, Pittsburgh, PA, United States Introduction. Magnetic Resonance Spectroscopic Imaging (MRSI) has emerged as a new tool to improve cancer diagnostic specificity as demonstrated in the clinical MRSI trials of brain, prostate, and breast cancer [1]. MR...

In rat sciatic nerves, a small bundle of fibers was identified in which myelin sheaths were absent at birth, appeared within 3 days, and grew rapidly for 2 wk. During this interval, nerves were removed from littermates and were sectioned serially in the transverse plane. Alternating sets of thin and thick sections were used to prepare electron micrograph montages in which single myelinating axo...

Cubic spiral is a curve whose direction is a cubic polynomial of arc length. It has been used as a path primitive for nonholonomic car-like mobile robot with restricted turning capability in free environment [1], [2]. In this paper, we investigate the use of cubic spiral segments for car-like mobile robots moving from a given start configuration to a given goal configuration in an environment c...

Though the fagellum of Sciara sperm arises from a blepharoplast and is characterized by doublet tubules with arms, it differs markedly from the familiar type of flagella in the number and arrangement of its tubules. The axial filament complex in sperm from the testis of Sciara consists of approximately 70 doublet tubules, each with an associated singlet tubule. Near the nucleus these tubules ar...

In vitro models of sustained monomorphic ventricular tachycardia (MVT) are rare and do not usually show spiral reentry on the epicardium. We hypothesized that MVT is associated with the spiral wave in the endocardium and that this stable reentrant propagation is supported by a persistently elevated intracellular calcium (Ca(i)) transient at the core of the spiral wave. We performed dual optical...

Spiral structures are one of the most difficult patterns to classify. In this paper, some important characteristics of the two-spiral problem are discussed. The paper discusses the reasons why linear and non-linear approaches have difficulties with classifying such data. The paper focusses on how structural information about spirals can be useful in providing critical information to a neural ne...