Mahoney, Robert P. (Skidmore College, Saratoga Springs, N.Y.), and Mercedes R. Edwards. Fine structure of Thiobacillus thiooxidans. J. Bacteriol. 92: 487-495. 1966.-Thin section analysis of the chemosynthetic autotroph Thiobacillus thiooxidans revealed structures comparable to gram-negative heterotrophic bacteria. Although this species is unique in that it oxidizes elemental sulfur for energy, ...

We would like to know how harmonic measure is distributed over the the boundary. Typically, the concentration of harmonic measure varies widely — it is higher on the more ”exposed” parts of the boundary and smaller on the ”screened” parts. It has become usual (see, e.g., [H]) to consider the dimension spectrum of a measure — a continuum of parameters characterising the size of the sets where th...

The distortion product otoacoustic emission (DPOAE) fine structure is revealed, when measuring DPOAE with a very fine frequency resolution. It is characterized by consistent maxima and minima with notches of up to 20 dB depth. The fine structure is known also from absolute hearing thresholds, and has recently been demonstrated to exist in low level equal-loudness contours. The character of the ...

Millipore filters and membranes are being used with increasing frequency in biological and chemical investigation. However, the structure of these filters, as well as some of the problems associated with histological techniques involved in their use, do not appear to be widely known. Early electron microscope studies (5) of Millipore filters were restricted to replicas of surface texture and to...

Cytoarchitectonic fields of the human neocortex are defined by characteristic variations in the composition of a general six-layer structure. It is commonly accepted that these fields correspond to functionally homogeneous entities. Diligent techniques were developed to characterize cytoarchitectonic fields by staining sections of post-mortem brains and subsequent statistical evaluation. Fields...

1. Thin sections of representative neurons from intramural, sympathetic and dorsal root ganglia, medulla oblongata, and cerebellar cortex were studied with the aid of the electron microscope. 2. The Nissl substance of these neurons consists of masses of endoplasmic reticulum showing various degrees of orientation; upon and between the cisternae, tubules, and vesicles of the reticulum lie cluste...

We study non-perturbative aspects of the Hagedorn transition for IIB string theory in an anti-de Sitter spacetime in the limit that the string length goes to infinity. The theory has a holographic dual in terms of free N = 4 super-Yang-Mills theory on a threedimensional sphere. We define a double scaling limit in which the width of the transition region around the Hagedorn temperature scales wi...

The fine structure of Bacillus subtilis has been studied by observing sections fixed in KMnO(4), OsO(4), or a combination of both. The majority of examinations were made in samples fixed in 2.0 per cent KMnO(4) in tap water. Samples were embedded in butyl methacrylate for sectioning. In general, KMnO(4) fixation appeared to provide much better definition of the boundaries of various structures ...

Irrational numbers can be assigned to physical entities based on iterative processes of geometric objects. It is likely that iterative round trips of vector signals include a geometric phase component. If so, this component will couple back to the round trip frequency or path length generating an non-linear feedback loop (i.e. induced by precession). In this paper such a quantum feedback mechan...