Results 51 to 60 of about 33,328 (231)

PET Studies of Cerebral Levodopa Metabolism: A Review of Clinical Findings and Modeling Approaches [PDF]

open access: yes, 2009
[18F]Fluoro-3,4-dihydroxyphenyl-l-alanine (FDOPA) was one of the first successful tracers for molecular imaging by positron emission tomography (PET), and has proven immensely valuable for studies of Parkinson’s disease.
Cumming, Paul, Kumakura, Yoshitaka
core   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

open access: yesAdvanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang   +4 more
wiley   +1 more source

Isolation and properties of polyphenol oxidase from basidiocarps of Lactarius pergamenus Fr. (Fr.) fungi [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2015
Fresh juice of basidiocarps of Lactarius pergamenus Fr. (Fr.) fungi was subjected to ion exchange chromatography with used DEAE-toyopearl and CM-cellulose columns, as well as preparative electrophoresis in 7.5% polyacrylamide gels (pH 8.6).
M. V. Tsivinska   +2 more
doaj   +1 more source

Comparison of hydroxyl radical formation in aqueous solutions at different ultrasound frequencies and powers using the salicylic acid dosimeter [PDF]

open access: yes, 2013
Ultrasonic frequencies of 20 kHz, 382 kHz, 584 kHz, 862 kHz (and 998 kHz) have been compared with regard to energy output and hydroxyl radical formation utilising the salicylic acid dosimeter. The 862 kHz frequency inputs 6 times the number of Watts into
Bremner, David H.   +2 more
core   +3 more sources

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

open access: yesAdvanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang   +6 more
wiley   +1 more source

Characterisation of polyphenol oxidase from Melissa officinalis L. subsp. officinalis (lemon balm)

open access: yesCzech Journal of Food Sciences, 2013
Polyphenol oxidase (PPO) from Melissa officinalis L. subsp. officinalis (lemon balm) was partially purified by ammonium sulphate precipitation and dialysis; and then it was characterised in detail in terms of pH and temperature optima, thermal stability,
Serap DOĞAN   +4 more
doaj   +1 more source

Anti-inflammatory functions of purpurogallin in LPS-activated human endothelial cells [PDF]

open access: yesBMB Reports, 2012
Enzymatic oxidation of commercially available pyrogallol wasefficiently transformed to an oxidative product, purpurogallin.Purpurogallin plays an important role in inhibiting glutathioneS-transferase, xanthine oxidase, catechol O ...
Tae Hoon Kim   +3 more
doaj   +1 more source

Oxygen Activation by Mononuclear Mn, Co, and Ni Centers in Biology and Synthetic Complexes [PDF]

open access: yes, 2017
The active sites of metalloenzymes that catalyze O2-dependent reactions generally contain iron or copper ions. However, several enzymes are capable of activating O2 at manganese or nickel centers instead, and a handful of dioxygenases exhibit activity ...
Fiedler, Adam T., Fischer, Anne A.
core   +1 more source

Amperometric tyrosinase based biosensor using an electrogenerated polythiophene film as an entrapment support [PDF]

open access: yes, 2003
International audienceAn amperometric enzyme sensor using tyrosinase, also called polyphenol oxidase (PPO), was constructed for determination of phenolic compounds and herbicides.
Fabiano, Silvia   +2 more
core   +2 more sources

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

open access: yesAdvanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins   +8 more
wiley   +1 more source

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