OALib Journal期刊

ISSN: 2333-9721



匹配条件: “Nanotechnology” ,找到相关结果约414条。
Nanotechnology: An Urgent Need  [PDF]
Francisco M. Marquez Linares
Soft Nanoscience Letters (SNL) , 2013, DOI: 10.4236/snl.2013.33008

From the first forecasts and expectations of nanotechnology, in the late 90s, there are many things that have changed and too many expectations not fulfilled. By 2050, the population is expected to exceed 9 billion people. At that time, or even before, the situation in the world can be very difficult if we do not put all the means at our disposal.

Nano Whiskers ..A “BIG” discussion on “SMALL” things..
Ruchi Sharma
International Journal of Computers & Technology , 2012,
Abstract: Technologyis shrinking fast. Computing technology that would have filled awarehouse 30 years ago can now be squeezed onto a chip a fraction ofthe size of your thumbnail. The very smallest scale of engineering is called nanotechnology. Ananometer is a billionth of a meter, about the width of ten atoms. Nanotechnology may, one day, be capable nanorobotics, nanorobots ornanobots. Working at an almost atomic level, nanobots could buildcomplex items cheaply and repair clothes, equipment and even peoplewithout being noticed. They could also be used to rid the atmosphere ofpollution and to repair holes in the ozone layer.
Ashfaq Hasan,B. Jagannadh
Journal of Medical and Allied Sciences , 2012,
Comparative Study on Methods for Preparation of Gold Nanoparticles  [PDF]
Khalida S. Merza, Hadi D. Al-Attabi, Zaid M. Abbas, Hashim A. Yusr
Green and Sustainable Chemistry (GSC) , 2012, DOI: 10.4236/gsc.2012.21005
Abstract: The gold nanoparticles were prepared in many methods, differed in reducing and dispersion agents and stability. The first solution was prepared by using potassium bitartrate as reducing agent and Polyethylene glycol as a dispersion factor. We got a solution of colloid gold with wine-red color that has been measured the particle size; it was between 50 - 200 nanometers. The second gold colloidal solution was prepared by using sodium citrate as a reducing agent and without adding a dispersion agent, the color of the final solution is dark grey, but this solution did not remain stable, deposition happened quickly and crystals separated from the solution. The third one was prepared by using sodium citrate as a reducing agent and the solution was heated to a certain temperature, and the color of the solution became dark red after several minutes. Either the fourth method has been prepared gold colloid solution by using potassium bitartrate as a reductant for the gold ion. We have noted that no reaction under normal conditions, while the reaction by heating the solution to high temperature, and when added poly vinyl pyrrolidone will lead to a solution of colloild gold with dark purple-red color and stable under normal conditions for a long time. We measured the particles size in this experiment; it was less than 100 nanometers. We conclude from the above that all the reducing agent needs to appropriate conditions to complete the process of reduction of gold ion, and to get the nano gold particles, therefore; these particles in the colloid solution need to dispersion factor to the survival of the particles widespread so that the solutions with certain concentrations of poly vinyl pyrrolidone can be proven in the process of stability of the gold colloid solution.
Nanodrugs and Natural Pharmaceutical Products
Mohammadreza Abbaspour
Jundishapur Journal of Natural Pharmaceutical Products , 2012,
Abstract: No Abstract
Nanoznanosti i nanotehnologije (Nanosciences and nanotechnologies)
Milun, M.
Kemija u Industriji , 2004,
I. Ruban,N. Voropaeva,M. Istomin,M. Kazakova
Albanian Journal of Agricultural Sciences , 2010,
Cellulosic Sorption Filter Materials with Surface Flocculation Activity—A Hopeful Anticipation of Water Purification  [PDF]
Miloslav Milichovsky, B?etislav ?e?ek, Michaela Filipi, Jan Gojny
Journal of Water Resource and Protection (JWARP) , 2014, DOI: 10.4236/jwarp.2014.63022

A filter media was developed comprising ionic activated cellulosic material with enormous sorption activity to ions-active dissolved and colloidal substances in aqueous systems evoking so-called surface flocculation and a filling material having a filter effect. The dilemma of the art of low sorption efficiency and high flow rate of filtrated aqueous dispersions without sacrificing its separation efficiency of fines has been solved by use of activated cellulosic material having multi-fold (roughly tenfold to hundredfold) sorption capacity for ions-active dissolved and submicron particulate contaminants compared to untreated cellulosic material.

Nanotechnological Contribution to Drug Delivery System: A Reappraisal  [PDF]
Pramod Vishwanath Prasad, Tulsidas G. Shrivastav
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2014, DOI: 10.4236/jbnb.2014.53023

With the emergence of Nanotechnology, there has been remarkable improvement in the field of drug delivery system over the past decade. Nanotechnology in drug delivery system is an upcoming field and significant research has been conducted in this regard. It has been able to overcome some limitations encountered with the traditional routine drug delivery systems and hence emerged as an effective alternative. This article reviews nanotechnology based different types of drug delivery systems and their therapeutic applications.

A Textbook on Biomaterials That Appeals to a Wide Readership from Undergraduate, via Instructor to Researcher  [PDF]
Andrew W. Taylor-Robinson
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2015, DOI: 10.4236/jbnb.2015.63014
Abstract: Introduction to Biomaterials: Basic Theory with Engineering Applications is an expertly written and comprehensive textbook that comfortably fills a hole in the market for an up-to-date teaching resource on biomaterials. It covers a range of material types, processing options and characterizations, and describes in detail their multidisciplinary applications. It should appeal to not only undergraduate students of biomedicine and bioengineering but also postgraduate and postdoctoral researchers in material science related to human biological systems.

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