The requirement of information security has undergone changes in the last several decades. Network security measures are needed to protect data during their transmission. Cryptography is probably the most important aspect of communications security and is becoming increasingly important as a basic building block for computer security. This paper sets out to develop a hybrid way of encryption of...

The tracheal epithelium of the rodent is a simple columnar ciliated type composed of ciliated cells, goblet cells, nonciliated columnar cells, brush cells, and basal cells. The noncillatcd cells are concells have been described in detail (Rhodin and Dalhamn, 1956; Rhodin, 1966; Leeson, 1961; Cireli, 1966; Steinman, 1968), the three-dimensional construction of the tracheal epithelimn has never b...

Single palatal processes or homotypic paired palatal processes from 12-day mouse embryos (strain C57Bl) were grown in organ culture on Millipore filters. The epithelium along the medial edge of each palatal process became disrupted, and, by 72 hours of culture, paired palatal processes achieved mesenchymal fusion at the site of disruption. The nasal epithelium of paired palatal processes became...

Mapping cortical columnar structures is important to understand cortical information processing. To map submillimeter columnar structures noninvasively, we have evaluated various functional magnetic resonance imaging (fMRI) techniques using a well-established feline orientation column model. The conventional positive blood oxygenation level-dependent (BOLD) signal is widespread and diffuse due ...

We apply generalized ellipsometry, well-known to be sensitive to the optical properties of anisotropic materials, to determine the amount of fibronectin protein that adsorbs onto a Ti slanted columnar thin film from solution. We find that the anisotropic optical properties of the thin film change upon organic adsorption. ...

We investigate the behavior of flux lines in the presence of both columnar and point disorder in 1+1 dimension using Renormalization Group (RG) and world-line Quantum Monte Carlo (QMC) techniques. In particular, we calculate the transverse wandering correlation function for a single boson and recover known results for point and columnar disorder separately. We then examine the existence of a lo...

An AlCoCrCuFeNi high-entropy alloy (HEA) coating was fabricated on a pure magnesium substrate using a two-step method, involving plasma spray processing and laser re-melting. After laser re-melting, the microporosity present in the as-sprayed coating was eliminated, and a dense surface layer was obtained. The microstructure of the laser-remelted layer exhibits an epitaxial growth of columnar de...

The morphology of the midgut epithelium cells of Anticarsia gemmatalis (Hübner) larvae is described by light and transmission electron microscopy. The midgut of A. gemmatalis is the largest portion of the digestive tract, with three distinct regions: proximal, media and distal. Its wall is formed by pseudostratified columnar epithelial tissue having four cell types: columnar, goblet, regenerati...

A 23-year-old man with a six months' history of dysphagia was found to have hiatus hernia with reflux and a stricture of the mid-oesophagus. Death from unrelated causes permitted detailed histological examination. This showed a high squamo-columnar junction with ulceration confined to the squamous epithelium immediately above the junction. The columnar epithelium of the lower oesophagus was lar...