Soil shear strength is an important indicator of soil erosion sensitivity and the tillage performance cultivated layer. Measuring at a field scale difficult, time-consuming, costly. This study proposes new method to predict parameters (cohesion internal friction angle) by combining cone penetration test (CPT) data properties. A portable CPT measuring device with two pressure sensors was designe...

The constriction resistance of a semi-infinite cylinder terminating in the frustum of a cone in a gaseous environment is analyzed numerically. The variation of constriction resistance with the ratio of contact radius to cylinder radius, the cone angle, and the gas-to-substrate thermal conductivity ratio is investigated. Nonlinear curve fitting is used to develop a comprehensive predictive corre...

PURPOSE To present a patient with acute idiopathic blind spot enlargement syndrome who had abnormal changes in the outer retinal microstructure limited to areas with reduced responses on multifocal electroretinograms as well as to the area involving a scotoma. METHODS AND RESULTS We report the case of a 44-year-old man who developed an arcuate scotoma which was associated with a physiological...

We propose an equivalent circuit model of a discrete formulation to describe the interaction between the red cone syncytium and the H1 horizontal cell syncytium in lower vertebrate retinas. Analytical solutions of the model provide intuitive understandings of spatio-temporal properties of light-induced responses in reference to membrane impedance, strength of chemical synapse and coupling resis...

In this paper, we establish a new version of Ekeland’s variational principle in a new setting of cone pseudo-quasimetric spaces. In constrast to metric spaces, we do not require that each forward Cauchy sequence is forward convergent and that each forward convergent sequence has the unique forward limit. The motivation of this paper comes from applications in Behavioral Sciences since a cone ps...

OBJECTIVES The purpose of the present study was to investigate the reliability of both periapical radiographs and orthopantomograms for exact detection of tooth root protrusion in the maxillary sinus by correlating the results with cone beam computed tomography. MATERIAL AND METHODS A database of 1400 patients scanned with cone beam computed tomography (CBCT) was searched for matching periapi...

In the nervous system neurons are organized into functional circuits where information between cells is transmitted by axons and dendrites. Axons are slender projections that extend over long distances in order to reach defined targets, i.e. other neurons, muscles or glandular cells. Growth cones, located at the distal tip of axons, play a crucial role in guiding axons to their correct target s...

The open/closed string descriptions of a system of Nc parallel D3–branes in flat space decouple in the large Nc limit, this leading to the duality between N = 4 supersymmetric Yang–Mills theory and type IIB string theory in AdS5 × S [1]. If, instead, the transverse six dimensional flat space background is replaced by a Calabi–Yau threefold, Y , the amount of preserved supercharges reduces to on...

We present boundary-integral simulations of the evolution of critically charged droplets. For such droplets, small perturbations are unstable and eventually lead to the formation of a lemon-shaped drop with very sharp tips. For perfectly conducting drops, the tip forms a self-similar cone shape with a subtended angle identical to that of a Taylor cone, and quantities such as pressure and veloci...

We report an effective method for the production of ultrasharp vertically oriented silicon nanocones with tip radii as small as 5 nm. These silicon nanostructures were shaped by a high-temperature acetylene and ammonia dc plasma reactive ion etch (RIE) process. Thin-film copper deposited onto Si substrates forms a copper silicide (Cu3Si) during plasma processing, which subsequently acts as a se...