Current Issue : October - December Volume : 2013 Issue Number : 4 Articles : 5 Articles
Nano-medicine, an offshoot of nanotechnology, refers to most specific medical intervention at the molecular scale. Nano-medicine is targeted for curing disease or repairing damaged tissues, such as bone, muscle, or nerve. Nanotechnology is a collective term referring to technological developments on the nanometer scale, usually 0.1-100 nm. It is at this size scale - about 100 nanometers or less - that biological molecules and structures inside living cells operate. Most of diseases are targeted with Nano medicine in 21st century to eliminate virtually all common diseases of the 20th century, and virtually all medical pain. This article presents an overview of some of the applications of nanotechnology in Nano-medicine. This article will highlight advancement of application of Nano-medicine in drug delivery like therapeutic (Cardiovascular, Neurodegenerative disorders, Cancer), diagnostic, implants/tissue engineering, cosmetics....
Studied are peculiarities of the changes in the structure and electrophysical properties of nanocrystalline silicon carbide films of 3CSiC\r\npolytype subjected to the action of picosecond laser pulses with ??=355nmand a pulse power up to 1.5W. It is established that\r\nlaser processing of the films with an energy density of 3 Ã?â?? 10-2-30 J/cm2 leads to ablation without decomposition of SiC. During the\r\nlaser processing the electrical resistance of the films rises due to diminution of the film thickness.While measuring the PL properties\r\nof nc-SiC films under the influence of the applied electric field with intensity 3 Ã?â?? 103 V/cm, the effect of a single triple enhancement\r\nof the luminescence maximum is revealed. Repeated PL measurements at the same area of the film under the applied electric field\r\nwith the intensity ranging from0 to 1 Ã?â?? 104 V/cm show that the PL emission intensity diminishes at the short-wavelength boundary\r\nof themaximum and rises at the long-wavelength boundary.Thereat the spectral position of the PL maximum remains unchanged....
Nanocrystalline hydrotalcite derived mixed oxides containing magnesium, cobalt, and aluminum (MCAM) (M(1-??)Al??O(1+??/2);\r\nM=MgorCo/Mg andCo and x =molar ratios) have been synthesized successfully and showed reversible hydrogen storage capacity\r\nat near ambient condition using fixed bed. ICP-MS and XRD analysis confirmed the adsorbent phases and their homogeneity.\r\nAdsorbent morphology and textural properties have been characterized using FESEM, BET and TEM analysis techniques. Nanocrystalline\r\nand porous mixed oxides exhibited 3 wt% H2 storage capacity and desorbed 57% of adsorbed H2. Spillover phenomena\r\nare observed through FTIR analysis. Adsorption enthalpy (???) and entropy (???) change were -25.58 kJ/mol and -59.98 J/mol�·K,\r\nrespectively, which implied a prospective feature of reversible hydrogen adsorption on nano-crystalline mixed oxide....
SiO2 nanoparticles have been synthesized by combining Stoberââ?¬â?¢s method and nonsurfactant process. The diameters and pore sizes\r\ncan be controlled by altering the template and its concentration. Mesoporous SiO2 obtained this way has extremely large surface\r\narea compared with most oxide supports, which benefits the catalytic performance. Pt nanoparticles were in situ grown on and in\r\nmesoporous SiO2 nanoparticles with low amount of the metal and high load ratio. Furthermore, we firstly developed a novel route,\r\ncalled ââ?¬Å?one-potââ?¬Â method, to prepare Pt/SiO2 catalyst where mesoporous silica preparing and Pt loading occurred in one step.This\r\nmethod is more efficient in saving reagent, since it can prevent Pt loss. In the meantime, it enables the template to reduce agent.\r\nThe catalytic activity of Pt/SiO2 samples was measured by CO oxidation. It is indicated that the supporting silica with mesopores\r\nis more active than silica with micropores....
This paper will introduce the reader to some of the ââ?¬Å?classicalââ?¬Â and ââ?¬Å?newââ?¬Â families of ordered porous materials which have arisen\r\nthroughout the past decades and/or years. From what is perhaps the best-known family of zeolites, which even now to this day is\r\nunder constant research, to the exciting new family of hierarchical porous materials, the number of strategies, structures, porous\r\ntextures, and potential applications grows with every passing day.We will attempt to put these new families into perspective from\r\na synthetic and applied point of view in order to give the reader as broad a perspective as possible into these exciting materials....
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