A novel and facile approach for preparing hydrophilic carbogenic dots (CDs) has been developed with mesoporous silica spheres as nanoreactors by using an impregnation method. The resulting highly efficient photoluminescent CDs without any further treatment are monodisperse, photostable and of low toxicity, and show excellent luminescence properties.

We report here on an efficient one-step-impregnation method to synthesize crystalline mesoporous bimetal oxides (e.g. NiFe(2)O(4), CuFe(2)O(4), Cu/CeO(2)) using mesoporous silicas as hard templates under optimized mixing conditions. This new procedure enables a true replication of the mesostructure with high yield and phase purity, while retaining particle morphology of the template.

Basal dendrites of hippocampal CA1 pyramidal cells in senile dementia of Alzheimer type (SDAT) were studied quantitatively by the Golgi impregnation method. The present data suggested that basal dendrites of the pyramidal cells were decreased in number in SDAT, and that the dendritic decrease was associated with a decrease in size of their cell bodies.

A highly dispersed Ru/OCNT catalyst synthesized through a facile ethylene glycol reduction approach shows more uniform particle size distribution with ∼1.0 nm compared with that prepared through a conventional impregnation method. Moreover, it also has good thermal stability evidenced by an in situ TEM study.

Treponemal infections in wild European brown hares (Lepus europaeus) from The Netherlands were diagnosed by means of serological tests for human syphilis and histological demonstration of spirochetes by the Bosma-Steiner silver impregnation method in histological sections of skin lesions. The treponeme should probably be classified as "Treponema paraluisleporis."

The development of the motor nerve ending has been studied by many investigators (TELLO, 1922, VISINTINI e LEVI-MONTALCINI, 1939; CUAJUNCO, 1942; KUPFER and KOELLE, 1951) and authors such as GEREBTZOFF (1959), MUMENTHALER and ENGEL (1961), and WAKE (1964) used the chick skeletal muscle to examine the morphogenesis of the ending. However, their studies were confined to the light microscopic obse...

There exist several options for local antibiotic therapy in orthopaedic and trauma surgery. Over the past years, the use of antibiotic-impregnated bone grafts (AIBGs) has become a popular procedure in the treatment of bone and joint infections. A major advantage of AIBGs involves the possibility of impregnation of various antibiotics depending on the sensitivity profile of the causative organis...

The importance of neurofibrillar impregnations in the study of the nervous system needs no emphasis. However, the silver methods currently used involve such a complex of variables that the results are by no means constant. The present communication is devoted to the problem of interpretation of results, together with certain fundamental relations between brain tissue and silver solution. The mo...

Previously we observed that corticosteroids alter Calbindin-D28k immunoreactivity in the rat hippocampus. In the present study we investigated whether prolonged subordination stress, presumably producing elevated plasma corticosterone levels (1) altered the immunocytochemical distribution of the Ca(2+)-binding proteins Calbindin-D28k (CBir) and Parvalbumin (PVir) in the rat hippocampus, and (2)...

A summary of usage of ultrasound in traditional textile technologies and a present literature review about new possibilities of usage of ultrasound in textile branch are the first part of this contribution. Second part is focused on a possibility of computer simulation of high frequency wave propagation by means of cellular automata method. An own program for longitudinal harmonic wave simulati...