M. Goldammer, C. Losert, J. Wuttke, W. Petry, F. Terki, H. Schober, P. Lunkenheimer 1 Physik-Department E13, Technische Universität München, 85747 Garching, Germany 2 Laboratoire de Science des Matériaux Vitreux, Université Montpellier II, 34095 Montpellier Cedex, France 3 Institut Laue-Langevin, 38042 Grenoble Cedex 9, France 4 Experimentalphysik V, Universität Augsburg, 86135 Augsburg, German...

A platelet subcellular fraction, sedimenting between 14,000 and 40,000 g and consisting primarily of membrane vesicles, accumulates up to 200-400 nmoles calcium/mg protein in the presence of ATP and oxalate. Steady-state levels of calcium accumulation are attained in 40-60 min. Calcium uptake requires adenosine triphosphate (ATP), is enhanced by oxalate, and is accompanied by the release of ino...

CaMnO(3) and Ca(2)Mn(3)O(8) were synthesized and characterized by SEM, XRD, FTIR and BET. Both oxides showed oxygen evolution activity in the presence of oxone, cerium(IV) ammonium nitrate and H(2)O(2). Oxygen evolution from water during irradiation with visible light (λ > 400 nm) was also observed upon adding these manganese oxides to an aqueous solution containing tris(2,2'-bipyridyl) rutheni...

The Indirasagar Dam (Punasa Dam) is a multipurpose key project of Madhya Pradesh on the Narmada river at Nagar in Khandwa (Tehsil West Nimar district) India.The physical and chemical properties water including temperature, pH, transparency, dissolved oxygen, biological oxygen demand, hardness, nitrate, calcium phosphorus concentration, were monitored from October 2018 to September 2019. paramet...

BACKGROUND Underground water is an important natural resource serving as a reliable source of drinking water for many people worldwide, especially in developing countries. Underground water quality needs to be given a primary research and quality control attention due to possible contamination. This study was therefore designed to determine the physico-chemical and bacteriological quality of bo...

Hydroxyapatite powder has been prepared via sol-gel procedure using calcium nitrate tetrahydrate and diammonium hydrogen phosphate as the precursors for calcium and phosphorus, respectively. XRD measurement shows that the powder contains hydroxyapatite crystals with β-TCP and calcium oxide as secondary phases. Hydroxyapatite powder of higher purity, i. e., the correct Ca/P ratio, has been obtai...