We study the reconstruction of a 3D image from a limited set of radiographs. In nondestructive testing of materials, such 3D images represent the map of attenuation of the inspected material. The reconstruction task is very useful to detect the presence of localized objects inside the material (e.g., air anomalies inside a metal), and to localize their position. We introduce parametric image mo...

This paper is concerned with an investigation into the localized instability of a thin elastic orthotropic semi-infinite plate. In this study, a semi-infinite plate, simply supported on two edges and under different boundary conditions of clamped, hinged, sliding contact and free on the other edge, is studied. A mathematical model is used and a general solution is presented. The conditions unde...

Peptides derived from both proenkephalin and prodynorphin have been identified in guinea pig adrenal medulla. In extracts of whole adrenal glands radioimmunoassays directed to the prodynorphin-derived peptides alpha-neoendorphin, dynorphin A, and dynorphin B detected high concentrations of immunoreactive material ranging from 113 to 216 pmol/gm. The concentrations measured by radioimmunoassays ...

amyloidosis includes a wide range of disorders characterized by deposition of amyloid in different organs and tissues. localized gingival enlargement due to accumulation of amyloid without involvement of other organs is a very rare condition. this article describes a 31-year-old male patient with amyloidosis involving only the periodontium of the anterior mandibular teeth with localized severe ...

Topological states can be used to control the mechanical properties of a material along an edge or around a localized defect. The rigidity of elastic networks is characterized by a topological invariant called the polarization; materials with a well-defined uniform polarization display a dramatic range of edge softness depending on the orientation of the polarization relative to the terminating...

Greenhouse grown seedlings of corn (Zea mays L.) and foxtail (Setaria faberii Herrm.) were used as source material in determining the intracellular localization of nitrate reductase, nitrite reductase, and glutamic acid dehydrogenase, Nonaqueous and aqueous isolation techniques were used to establish that nitrite reductase is localized within the chloroplasts, but that nitrate reductase and glu...

INTRODUCTION: Age-related and osteoporotic bone fractures are a major concern in the health care of elderly. In the past, large amount of studies have investigated age-related changes in the bulk tissue properties of bone.[1-3] Nonetheless, it is necessary to examine the the localized material properties in individual osteons and interstitial bone tissues to understand the age-related changes i...

Tattoo removal from the forearm often requires excision and split skin grafting. The authors propose the use of a bloodless field to facilitate accurate dermal peeling, to ensure complete removal of the pigment, and to reduce operative time.