Nanotubular materials inspired by crystalline diborides such as AlB2 are proposed. The atomic structure, in particular the basic chemical question of where to put Al atoms in order to stabilize nanotubular Al-B systems, is investigated using density-functional calculations for prototype systems. The optimized tubular prototypes are found to be competitive in energy with their bulk crystalline c...

We aimed to develop alternative fishing gear for catching the common octopus, to decrease the use of bait and operating costs in comparison to commercial net pots. A tubular-type pot was designed, and behavioral responses of the common octopus were experimentally monitored in tank and replicated 10 times to compare fishing performances between 300 experimental and 300 commercial net pots in the...

We present an automated approach for airway tree reconstruction from CT images. Our approach performs an initial identification of tubular structures, followed by a reconstruction of the airway tree. During the reconstruction step, tubular objects that are part of the airway tree are identified and linked together based on prior knowledge about the structure of human airway trees. A major advan...

Two distinct spore appendage types of Clostridium bifermentans, a pinlike appendage and a tubular appendage, were studied by electron microscopy. The pinlike appendage is characterized by a shaft, about 100 A in diameter, which has a lobed caplike structure. The tubular appendage, 500 to 600 A in diameter, is characterized by a hirsute region consisting of small filaments or fibrils. Gross morp...

An L-glutamic acid based bolaamphiphile was observed to self-assemble into a novel "helical spherical-nanotube" with a molecular monolayered structure within a tubular wall.

a case of renal tubular acidosis (rta) who had gradual onset of paralysis of lower extremities and persisted for a long time is presented. his primary workups were mistaken for muscular dystrophy. eventually, an abdominal ultrasonography revealed small stones in both of the kidneys and his workup for the stones were in favor of distal renal tubular acidosis and advanced rickets with hypokalemia...

Although the mechanoreceptor organs of astigmatic mites are used extensively as taxonomic characters, knowledge of their fine structure is minimal. Mechanoreceptors include setiform sensilla and cupules, and light microscopy, scanning electron microscopy and transmission electron microscopy were used to investigate their morphology. Setiform sensilla are movable and arise from a socket of th...

Epithelial inclusions were detected in myocardium of a 2-month-old male Holstein calf. Microscopically,nonpurulent myocarditis along with focal tubular and acinar structures covered with cuboidal epithelial cellswas seen in the myocardium. Most tubular and acinar structures stained with Masson’s trichrome were foundto be surrounded with a dense collagen. Tubular and acinar structures had PAS po...

Graft Versus Host Diseases (GVHD) is the leading cause of morbidity and mortality after allogenic hematopoietic stem cell transplantation, occurring in up to 75% of patients [1]. According to the degree of involvement in each of the organ systems, acute GVHD can be clinically classified as grades I IV [2]. Colonoscopic examination can show diffuse edema, hyperemia, patchy erosion, scattered ulc...

objective(s) in recent years concerns have been raised regarding the incidence of male reproductive disorders from exposure to endocrine disruptors. so, chronic effects of di(2-ethylhexyl)phthalate were studied on histological and stereological structure of testis in adult wistar rats. materials and methods thirty two adult wistar rats were randomly divided in four equal experiment groups; oil ...