Early cardiogenesis including myofibrillogenesis is a critical event during development. -Recently we showed that prospective cardiomyocytes reside in the posterior lateral blastoderm in the chick embryo. Here we cultured the posterior region of the chick blastoderm in serum-free medium and observed the process of myofibrillogenesis by immunohistochemistry. After 48 hours, explants expressed sa...

Magnetic field-aligned structures in current, density, and temperature are common features of the auroral ionospheric plasma. These structures both generate and transform low frequency waves in the plasma. The results of laboratory studies of two processes involving magnetic field-aligned density depletions ~striations! that play a role in auroral plasma dynamics are presented. The first proces...

Complete software support has been developed for a direct memory access microprocessor system used to store and analyze diffraction data from striated muscle. These studies are based on the premise that the regularly alternating light and dark regions of the fiber behave like a phase grating to incident laser light. A knowledge of the position of a diffracted order can thus be used to determine...

A man of 74 who had had seropositive rheumatoid arthritis for 10 years presented with dyspnoea and reticular striation in both lung fields. At necropsy two years later there was pulmonary fibrosis with multiple rheumatoid nodules and non-specific granulomas.

The skin of Helix pomatia was investigated by biochemical methods and electronmicroscope. Biochemical investigations showed that Helix pomatia collagen represents a methionine-lacking collagen resistant to CNBr-cleavage. Electron microscopic studies showed a cross striation pattern of 53--57 nm.

The stereotyped striation of myofibrils is a conserved feature of muscle organization that is critical to its function. Although most components that constitute the basic myofibrils are well-characterized biochemically and are conserved across the animal kingdom, the mechanisms leading to the precise assembly of sarcomeres, the basic units of myofibrils, are poorly understood. To gain insights ...

High-power laser cutting is extensively used in many industrial applications.The quality of a laser-made cut is of the utmost importance in laser processing. Any improvements in this area would be of considerable significance, in that it would lead to an elimination of post-machining operations. Although there have been numerous techniques developed over the years, currently there are few appro...

This paper is concerned with the theory and modeling of plasma instabilities in the ionosphere. We first consider the so-called ’striation model’ which consists of balance equations for the density and momenta of the plasma species, coupled with an elliptic equation for the potential. The linearized instability of this model is analyzed in the framework of Fourier theory, both for smooth and di...

A detailed analysis, based on kinetic and fluid simulations, of striation phenomenon in the plasma display panel cell has been presented. Numerical studies indicate that the phenomenon of striation occurs primarily due to the accumulation of space charge near the anode electrode. These space charges locally create multiple-layer potential distribution near the anode region. The ion density in t...

The structure of complexes made from DNA and suitable lipids (lipoplex, Lx) was examined by cryo-electron microscopy (cryoEM). We observed a distinct concentric ring-like pattern with striated shells when using plasmid DNA. These spherical multilamellar particles have a mean diameter of 254 nm with repetitive spacing of 7.5 nm with striation of 5.3 nm width. Small angle x-ray scattering reveale...