نتایج جستجو برای: non spherical particles

تعداد نتایج: 1492473  

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2009

Journal: :Iet Radar Sonar and Navigation 2022

Aircrafts encounter ice crystal particles during flight, which can easily cause engines icing or even damage, so the detection of for airborne weather radar is very important. In view particle echo simulation still vacant problem, and in order to provide high-fidelity data, an method non-spherical proposed this study. Firstly, spatial distribution characteristic parameters are obtained from sim...

Journal: :Journal of nanoscience and nanotechnology 2011
Samar Shah Yaling Liu Walter Hu Jinming Gao

One of the major challenges in nanomedicine is to improve nanoparticle cell selectivity and adhesion efficiency through designing functionalized nanoparticles of controlled sizes, shapes, and material compositions. Recent data on cylindrically shaped filomicelles are beginning to show that non-spherical particles remarkably improved the biological properties over spherical counterpart. Despite ...

2005
Shoji NAGAOKA Kenji ARINAGA Hiromi KUBO Shigenori HAMAOKA Toshihiko SAKURAI Makoto TAKAFUJI Hirotaka IHARA

Cellulose/TiO2 hybrid spherical microbeads were prepared by a one-step phase separation method using a cellulose xanthate aqueous solution and a sodium polyacrylate aqueous solution. Various types of cellulose/ TiO2 hybrid spherical microbeads were obtained by using the several kinds of TiO2 particles. The resulting hybrid spherical microbeads showed respective differences in the distribution o...

Journal: :Journal of colloid and interface science 2010
Begoña Almería Weiwei Deng Tarek M Fahmy Alessandro Gomez

We developed a well-controlled method to generate PLGA microparticles of different morphologies using the electrospray drying route. By judiciously selecting polymer molecular weight, concentration, and solution flow rate, we can control the order in which polymer entanglements and Coulomb fission occur in the droplets and their relative importance, and subsequently govern the morphology of the...

In the current paper, finite element method is employed for numerical simulations and the study of influential parameters on elastic modulus of polymer-matrix nano-composites. Effects of different key parameters including particle elastic modulus, interphase elastic modulus, matrix elastic modulus, interphase thickness and particle volume fraction on total elastic modulus of nano-composite mate...

2008
X. YI H. L. DUAN B. L. KARIHALOO J. WANG X. Yi H. L. Duan B. L. Karihaloo J. Wang

Nano-particles consisting of a core surrounded by multiple outer shells (multishell particles) are used as novel functional materials as well as stiffeners/toughners in conventional composites and nanocomposites. In these heterogeneous particles, the mismatch of thermal expansion coefficients and lattice constants between neighboring shells induces stress/strain fields in the core and shells, w...

2015
Alain MIFFRE

As underlined by the latest IPCC report [1], tropospheric aerosols are nowadays recognized as one of the main uncertainties affecting the Earth’s climate and human health. This issue is not straightforward due to the complexity of these nanoparticles, which present a wide range of sizes, shapes and chemical composition, which vary as a function of altitude, especially in the troposphere, where ...

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