Description
Controlled Release Systems : Advances in Nanobottles and Active Nanoparticles, Hardcover by van Herk, Alexander (EDT); Forcada, Jacqueline (EDT); Pastorin, Giorgia (EDT), ISBN 9814613215, ISBN-13 9789814613217, Like New Used, Free shipping in the US In the area of controlled release of active substances, such as drugs, a strong interest in nanoparticles as carriers of active ingredients has arisen. Some of the active components are extremely hydrophobic, without cellular permeability and susceptible to metabolic degradation. Owing to this, their use is limited. This kind of agent can be transported without any problem through physiological media by using nanoparticles. The size of particles is an important parameter because it governs the efficiency of the delivery system. For this type of application, particles that have a diameter smaller than 1 µm are especially useful. Polymeric nanoparticles that have diameters in the colloidal range are produced by means of polymerization processes in dispersed media. Drugs are taken up into the nanoparticles by adsorption, absorption, or “entrapment," or covalent bonding and they are delivered (release) by desorption, diffusion, polymer degradation, or a combination of these mechanisms. Nanoparticles (including nanogels) that release their contents by external triggering open up new possibilities for therapeutic strategies. External triggering by light, heat, change in pH, or application of ultrasound opens up the possibility to release the material on demand. If only a part of the wall of the nanoparticle (nanocapsule) is responsive, we are dealing with the so-called nanobottles, a nanocontainer with the active substance and a lid on the container that can be "opened" and "closed" by external triggering. This book focuses on responsive nanoparticles and brings together two interesting areas: nanoparticles and responsive polymers. The concept of th is that of a systematic approach from nanoparticles synthesis via responsive polymers to nanobottles. The second part of th presents contributions from experts in the field and provides a state-of-the-art overview of the field.
Rocsana Akter kajol
The book I bought was reasonably priced and when it arrived it was in the 'Like New' condition specified in the listing. However, when I saw that the seller had not shipped the book after more than 15 days had passed since my order I felt I must write to say that I had actually placed an order with the seller and inquire when it planned to send the book. The brusque reply was that a tracking number was available, but no number HAD been created until I pointed out that I had placed the order.
ProtH6d21b7d
Item as described. Poly mailer, no padding. Description clearly states delivery window of several weeks. Yet I chose this seller because item is new. Purchased/paid April 16, shipped April 28, arrived Maryland to SC May 5.This after contacting seller on day 10 to ask why it had not shipped yet. Slow return communication requesting invoice number/transaction date. Just be aware. IMHO eBay has sellers with faster, more efficient delivery service.
K Hc497b8dba
I purchase the Veterinary Assisting Fundamentals & Applications, Hardcover by Vanhorn, Beth on January 22nd and it took five days which was January 27th to confirm my order, provide a tracking . Once, that happend the textbook sat somewhere 4 more days before it was shipped , it was suppose to arrive Monday, January 3rd, Great seller. Great price, As described, Packed well.