Papers – Page 28 – TechConnect Briefs

Integrated Multistage Supercritical Technology to Produce High Quality Vegetable Oil and Biofuels

Anitescu G., Deshpande A., Rice P.A., Tavlarides L.L., Syracuse University, US

A multi-step integrated technology to produce high quality vegetable oils and biodiesel fuels is proposed, documented for technical and economic feasibility, and preliminarily designed. The first step of the integrated system consists of soybean oil [...]

Nanoparticle Formation in Supercritical Fluids – The World’s First Real Time In-situ Investigation

Jensen H., Bremholm M., Nielsen R.P., Joensen K.D., Chen Y-S, Almer J., Søgaard E.G., Iversen B.B., Iversen S.B., Iversen B.B., Iversen S.B., SCF-Technologies, DK

In this study the world’s first real time in-situ simultaneous small angle x-ray scattering (SAXS) and wide angle x-ray scattering (WAXS) characterization of supercritical nanoparticle formation was performed. In previous supercritical studies the reaction is [...]

Amorphous Diamond Solar Cells

Sung J.C., Sung M., Kan M-C, Hsiao T-J., Sung J.C., Sung M., Kinik Company, TW

Silicon based photo voltaic panels are the mainstream of solar cells. However, there are intrinsic limitations of such devices for replacing power plants. The low conversion efficiency (

Determination of micro-structural properties with x-ray absorption fine structure

Han S.-W., Park S.H., Yu H.-J., Jeong E.-S., Kim S-H, Kim Y.J., Kim S-H, Kim Y.J., Yi G.-C., Chonbuk National University, KR

We studied the structural properties of ZnO nanostructures with x-ray absorption fine structure (XAFS) to understand the growth mechanism of vertically aligned ZnO nanorods of the average diameter of 50 - 150 nm. The orientation-dependent [...]

Bacterial desulphurization of brown coals

Fecko P., Kusnierova M., Safarova M., Cablik V., VSB-TU Ostrava, CZ

The aim of this paper is the suitability of evaluation of bacterial leaching applied on the brown coals samples from mine CSA Most. The results of this work show that using clean bacterial cultures of [...]

3D structure of nano-scale materials by total x-ray scattering

Petkov V., Central Michigan University, US

Knowledge about the three-dimensional (3D) structure, including the type and positions of atomic/molecular units in space, is an important prerequisite to understanding, predicting and improving properties of materials. With common materials it is routinely obtained [...]

Extracting unburnt coal from black coal fly ash

Kusnierova M., Fecko P., Slovac Academy of Science, SK

Black-coal fly ash from Kosice Power Plant in Slovakia contains between 22 and 25 % of unburnt coal, which is , strictly speaking, a useful component. Studying optimal separation methods of unburnt coal from the [...]

Quantitative Synchrotron Grazing Incidence X-ray Scattering and Reflectivity Analysis of Nano-structures and Patterns Supported with Substrates

Ree M., Yoon J., Heo K., Jin K.S., Jin S., Jin K.S., Jin S., Lee B., Park I., Park Y.H., Choi S.C., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Oh W., Park I., Park Y.H., Hwang Y., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Chang T., Pohang University of Science & Technology, KR

Single-layer, multi-layer, and patterned nanostructures were fabricated with aids of substrates from various material systems (polymers, diblock copolymers, polymer blends, alumina precursors, silane precursor, etc.) using wet spin-coating and subsequent dry and thermal process, chemical [...]

Energy balance development in a cogeneration with biogas for H2 production by catalytic reforming.

Hernández Rosales I.P., Fernández Madrigal A., García Serrano L., UNAM, MX

The main object of this research was carry out technically a mass and energy balances in an energy cogeneration plant with cattle excrement gas a fuel composed by biogas + natural gas. This fuel was [...]

Simulation of Buffer-Related Current Slump in AlGaN/GaN HEMTs

Horio K., Shibaura Institute of Technology, JP

Transient simulations of AlGaN/GaN HEMTs are performed in which a three-level compensation model is adopted for a semi-insulating buffer-layer, where a shallow donor, a deep donor and a deep acceptor are considered. Quasi-pulsed I-V curves [...]