Results 221 to 230 of about 19,464 (251)

Solid-supported palladium nano and microparticles: an efficient heterogeneous catalyst for ligand-free Suzuki–Miyaura cross coupling reaction

Tetrahedron Letters, 2011
a b s t r a c t Solid-supported nano and microparticles of Pd(0) (SS-Pd) were prepared and used as heterogeneous catalysts for Suzuki–Miyaura cross coupling reactions of aryl halides (chloro, bromo and iodo) and phenyl boronic acid under mild and ...
Pralay Das, Dharminder Sharma, Arun K Shil   +2 more
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Multiplexed Sensing and Imaging with Colloidal Nano- and Microparticles

Annual Review of Analytical Chemistry, 2013
Sensing and imaging with fluorescent, plasmonic, and magnetic colloidal nano- and microparticles have improved during the past decade. In this review, we describe the concepts and applications of how these techniques can be used in the multiplexed mode, that is, sensing of several analytes in parallel or imaging of several labels in parallel.
Susana, Carregal-Romero, Encarnación, Caballero-Díaz, Lule, Beqa, Abuelmagd M, Abdelmonem, Markus, Ochs, Dominik, Hühn, Bartolome Simonet, Suau, Miguel, Valcarcel, Wolfgang J, Parak   +8 more
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Photocontrolled Release of Chemicals from Nano‐ and Microparticle Containers

Angewandte Chemie International Edition, 2018
AbstractA benzoin‐derived diol linker was synthesized and used to generate biocompatible polyesters that can be fully decomposed on demand upon UV irradiation. Extensive structural optimization of the linker unit was performed to enable the defined encapsulation of diverse organic compounds in the polymeric structures and allow for a well‐controllable ...
Christoph Englert, Ivo Nischang, Cornelia Bader, Philipp Borchers, Julien Alex, Michael Pröhl, Martin Hentschel, Matthias Hartlieb, Anja Traeger, Georg Pohnert, Stephanie Schubert, Michael Gottschaldt, Ulrich S. Schubert   +12 more
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Biomimicry nano- and microparticles

2016
Nanoparticles for medical as well as biotechnological purposes have gathered an increasing amount of attention over the last 20 years. Nanoparticles are used for a multitude of applications such as drug delivery, enzyme stabilization and imaging.
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Evaluation of nano- and microparticle uptake by the gastrointestinal tract

Advanced Drug Delivery Reviews, 1998
Numerous papers over the last two decades have demonstrated that particle uptake by the gastrointestinal tract is a reality. In addition, polymeric nano- and microparticles have proved to be useful delivery systems to enhance oral bioavailability of poorly absorbed drugs or to induce mucosal immune response.
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Oxidative dissolution of nano- and microparticles of lead in water

Journal of Contaminant Hydrology
Lead is an extremely hazardous pollutant that poses a severe threat to the ecosystem. It enters the atmosphere in the form of nano- and microparticles and is then carried by wind and water. These particles easily dissolve in water, turning into ions which are easily absorbed by living organisms.
Gennadii L, Bykov, Vadim A, Ershov, Boris G, Ershov   +2 more
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Evaluation of health risks of nano- and microparticles

Powder Metallurgy, 2008
Little research has to date been done to evaluate the impact of nanoparticles on the environment and humans, despite their use in products such as cosmetics, paint and tyres. Experience with other emerging technologies has shown that they are only accepted by society if possible health effects are analysed and published at an early stage of development.
V. Richter, A. Potthoff, W. Pompe, M. Gelinsky, H. Ikonomidou, S. Bastian, K. Schirmer, S. Scholz, J. Hofinger   +8 more
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Nano- and microparticles for the delivery of polypeptides and proteins

Advanced Drug Delivery Reviews, 1993
Abstract The future of peptides in therapeutics will clearly depend on the route and the form of their delivery to the body. Among the possible strategies, micro- and nanoparticles represent exciting technologies able to improve the pharmacokinetic profile of numerous peptides and, in some cases, to allow a more efficient transport of these molecules
P. Couvreur, F. Puisieux
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Polymeric nano- and microparticles for the oral delivery of peptides and peptidomimetics

Advanced Drug Delivery Reviews, 1998
Due to recent advances, numerous bioactive peptides are now available in large quantities. Administering these substances by the oral route appears as a formidable challenge due to their insufficient stability in the gastrointestinal tract and their poor absorption pattern. Several approaches have been investigated to improve their oral bioavailability.
Allémann, Eric, Leroux, Jean-Christophe, Gurny, Robert   +2 more
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Nano/Microparticles for Retina and Posterior Diseases

2018
Treatment and management of diseases of the posterior segment of the eye such as age-related macular degeneration, cytomegalovirus retinitis, diabetic retinopathy, posterior uveitis, retinoblastoma, retinitis pigmentosa, and choroidal neovascularization is a challenging task due to the anatomy and physiology of ocular barriers.
Anita Patel, Jayvadan K. Patel, Elie Beit-Yannai   +2 more
openaire   +1 more source