Results 301 to 310 of about 7,259,671 (332)
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Enzyme activation for activator and enzyme activity measurement
Biosensors and Bioelectronics, 1993A new sensing principle of enzyme activation is demonstrated for the determination of glycogen phosphorylase b and its allosteric effector AMP. As the indicator of the phosphorylase catalysed glycogen phosphorolysis, glucose-1-phosphate formation has been detected with an enzyme sequence comprising coentrapped alkaline phosphatase, mutarotase and ...
Wollenberger, Ursula (Prof. Dr.) +1 more
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Active packaging with antifungal activities
International Journal of Food Microbiology, 2016There have been many reviews concerned with antimicrobial food packaging, and with the use of antifungal compounds, but none provided an exhaustive picture of the applications of active packaging to control fungal spoilage. Very recently, many studies have been done in these fields, therefore it is timely to review this topic. This article examines the
Nguyen van Long, Nicolas +2 more
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Light‐Activated Active Colloid Ribbons
Angewandte Chemie, 2017AbstractWe report a dynamic self‐organization of self‐propelled peanut‐shaped hematite motors from non‐equilibrium driving forces where the propulsion can be triggered by blue light. They result in one‐dimensional, active colloid ribbons with a positive phototactic characteristic.
Zhihua Lin +5 more
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Activation of a gene activator
Immunology Today, 1987Differential gene expression is fundamental to the existence of any complex metazoan organism: certain genes are only expressed in some cell types while others are turned on and off at specific stages in a developmental pathway. These changes in expression are activated by intracellular and extracellular signals - molecules that trigger a specific ...
I K, Hariharan, N, Gough
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Procoagulant Activity of Activated Monocytes
Pathophysiology of Haemostasis and Thrombosis, 1977Endotoxin-stimulated monocytes develop a very high tissue-factor-like activity as compared to an equivalent number of monocytes in a preparation of monocyte-enriched mononuclear blood cells obtained by Ficoll®-Urovison® density gradient centrifugation which is not exposed to endotoxin.
E, Hiller, J G, Saal, G, Riethmüller
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Activity—From Action to Activity
Scandinavian Journal of Caring Sciences, 1995In this article, existing terminology concerning occupational performance is reviewed. The authors conclude that the occupational therapy terminology available is insufficient to describe levels of complexity in the performance of an activity. Concepts are suggested to describe the different aspects of an activity, namely operations, single actions ...
L, Haglund, C, Henriksson
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Peroxidase Active Site Activity Assay
2010Cyclooxygenase enzymes house spatially distinct cyclooxygenase- and peroxidase-active sites. The two-electron reduction of peroxides to their corresponding alcohols by the heme bound in the peroxidase-active site converts the heme to a ferryloxoprotoporyphrin cation radical, with a reductant providing the two electrons necessary to bring the heme back ...
Kelsey C, Duggan +2 more
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Active life, active antitumor defense
Science Signaling, 2017An active lifestyle in mice stimulates adrenergic signaling in the nervous system that enhances the function of antitumor natural killer cells.
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Apoptotic Caspase Activation and Activity
2008Caspases are central to the execution of apoptosis. Their proteolytic activity is responsible for the demise of cells in many physiological and pathological states. Great advances in understanding caspases have been made using recombinant caspase expression and enzymatic characterization.
Jean-Bernard, Denault, Guy S, Salvesen
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Student Activity vs. Teacher Activity
The Modern Language Journal, 1929Author's Summary.— A maximum amount of student activity is desirable in first and second year work, with an apparent effacement of the teacher.
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