نتایج جستجو برای: floating

تعداد نتایج: 21022  

Journal: :The Lancet 1908

Journal: :American Anthropologist 1976

Journal: :Ecozon@: European Journal of Literature, Culture and Environment 2010

Journal: :The Journal of Bone and Joint Surgery. British volume 1999

Journal: :RADIOISOTOPES 1996

Journal: :The American Journal of the Medical Sciences 1884

Journal: :Molecules 2011
Zhen-Hai Zhang Yong-Shun Sun Hui Pang Were L L Munyendo Hui-Xia Lv Sheng-Liang Zhu

The purpose of this research was to prepare floating calcium alginate beads of berberine for targeting the gastric mucosa and prolonging their gastric residence time. The floating beads were prepared by suspending octodecanol and berberine in sodium alginate (SA) solution. The suspension was then dripped into a solution of calcium chloride. The hydrophobic and low-density octodecanol enhanced t...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Marten Scheffer Sandor Szabo Alessandra Gragnani Egbert H Van Nes Sergio Rinaldi Nils Kautsky Jon Norberg Rudi M M Roijackers Rob J M Franken

Invasion by mats of free-floating plants is among the most important threats to the functioning and biodiversity of freshwater ecosystems ranging from temperate ponds and ditches to tropical lakes. Dark, anoxic conditions under thick floating-plant cover leave little opportunity for animal or plant life, and they can have large negative impacts on fisheries and navigation in tropical lakes. Her...

2011
Olivier Ponsini Michel Rueher

Programs with floating-point computations are tricky to develop because floating-point arithmetic differs from real arithmetic and has many counterintuitive properties. A classical approach to verify such programs consists in estimating the precision of floating-point computations with respect to the same sequence of operations in an idealized semantics of real numbers. Tools like Fluctuat—base...

Journal: :Acta pharmaceutica 2011
Canan Hasçiçek Günseli Yüksel-Tilkan Berna Türkmen Nurten Ozdemir

Floating dosage forms of acetylsalicylic acid, used for its antithrombotic effect, were developed to prolong gastric residence time and increase bioavailability. In the two-layer tablet formulation, hydroxypropyl methylcellulose (HPMC) of high viscosity and an effervescent mixture of citric acid and sodium bicarbonate formed the floating layer. The release layer contained the drug, direct table...

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