Materials Literature
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BACKGROUND: The objective of this study was to compare the transfection efficiency of anionic liposomes coated with polyethylenimine (PEI) with that of PEI and Lipofectamine 2000(™) using the plasmid DNA encoding green fluorescent protein in a human hepatoma (Huh7) cell line. METHODS: Factors affecting transfection ef…
This paper deals with an innovative via-last TSV polymer filling process dedicated to straight (non-slopped), high aspect ratio (2:1 to 5:1) TSV, partially filled with copper. New polymers were investigated for this purpose. Firstly, the need for a polymer filling process is pointed out. Potential reliability issues a…
The aim of this paper is to compare the performances of the three-parameter sine-fit (3PSF) and the four-parameter sine-fit (4PSF) algorithm when a sine wave corrupted by a Gaussian noise is analyzed. Algorithm accuracy is evaluated by means of the expected sum-squared fit error and the normalized frequency required b…
The Proton Exchange Membrane Fuel Cell (PEMFC) is being investigated as an alternate power source for various applications as transportation and emergency power supplies. Fuel cell systems are characterized by high costs and complex auxiliary devices. For this reason, a fuel cell emulator can be used as a suitable and…
We propose the η-carbide–type correlated-electron metal Fe 3 Mo 3 N as a new candidate for testing geometric frustration in itinerant-electron magnets. In this compound, ferromagnetism is abruptly induced from a non-magnetic non–Fermi-liquid ground state either when a magnetic field (∼14 T) applied to it or when it is…
In tests with Hele–Shaw cells containing silica sand, O 2 profiles were measured after formation of a capillary fringe (CF) with a nutrient broth, that was inoculated with Pseudomonas putida. After 7 d, the CF became anaerobic up to 2 cm above the water level. Within the next 3 cm at decreasing water saturation, the O…
We present our most recent developments in 4H-SiC DMOSFETs. A 4H-SiC DMOSFET with an active area of 0.1 cm2showed a specific on-resistance of 3.7 mΩ-cm2with a gate bias of 20 V, and an avalanche voltage of 1500 V with gate shorted to source at 25°C. A threshold voltage of 3.5 V was extracted from the DMOSFET, and a su…
This paper presents a novel reconfigurable sensing scheme with the flexibility to change reading precision of analog resistance levels for MLC PCM. A 2Mcell PCM chip was fabricated in 90nm CMOS technology and was tested. Operating at 8-bits precision (adequate for 7b/cell PCM i.e., 128 resistance levels), read access…
GaN Super Heterojunction Field Effect Transistors (Super HFETs) based on the polarization junction (PJ) concept are demonstrated on Sapphire substrates. These Super HFETs were fabricated from a GaN/Al0.23Ga0.77N/GaN hetero structure with 2D hole and electron gas densities of 1.1×1013and 9.7×1012cm-2at the respective h…
In this paper, 5kW DC distribution system test-bed is designed to prove feasibility of DC distribution system and find problems and solutions when DC distribution is introduced. And availability of spark reduction method using initial charging circuit and arc reduction method using freewheeling diode is verified. In c…
The effect of electrolytic oxidation and hydrogenation on the magnetization distribution and magnetic properties of ribbons of amorphous soft magnetic iron-based alloys has been investigated on the example of the Fe 77 Ni 1 Si 9 B 13 and Fe 81 B 13 Si 4 C 2 alloys. The results of the investigation showed that hydrogen…
We explore the response of a magnetic bilayer to a driving microwave field using micromagnetic simulations. The bilayer consists of 8 nm of a material with a high uniaxial anisotropy and 56 nm of a material with a lower uniaxial anisotropy. The width and length of the structure is 100 × 100 square microns. A small app…
BACKGROUND: The aim of this study was to optimize the different process parameters including pressure, temperature, and polymer concentration, to produce fine small spherical particles with a narrow particle size distribution using a supercritical antisolvent method for drug encapsulation. The interaction between diff…
The anthraquinone-2,6-disulfonate (AQDS) and poly-l-lysine (PLL) - glutaraldehyde (GA) film (AQDS/PLL-GA) was prepared on a glassy carbon electrode (GCE) by multiple scan cyclic voltammetry. This nanocomposite film was characterized using atomic force microscopy, scanning electron microscopy and electrochemical impeda…
Cu 2 ZnSnS 4 (CZTS) thin films were fabricated by a sol–gel sulfurization method with a rapid thermal process. The films preheated at 250 °C for 1 h and sulfurized from 350 to 600 °C for 1 h were investigated. The chemical composition of sulfur was 40% for the preheated film and 50% for the films sulfurized at tempera…
Mitochondria are highly dynamic organelles that are central to several cellular processes, the most prominent being energy production. Several reports have shown that pathogens target mitochondria in various ways to interfere with apoptosis, but to our knowledge only one study has specifically addressed the effects of…
This study aimed at the assessment, in the laboratory, of the larval settlement and spat recovery rates of oysters of the species Crassostrea brasiliana using plastic collectors, epinephrine (C9H13NO3 C4H6O6) and shell powder in settlement tanks. Polypropylene was used attached to bamboo frames. The material was chose…
Abstract A highly sensitive and selective, "turn‐on" and simple Hg2+ biosensor is reported by using water‐soluble graphene oxide (WSGO) and dye‐labeled mercury(II)‐specific oligonucleotide (MSO) probe. The probe is rich of thymine (T) and can readily form the stem‐loop structure which consists of the T‐Hg2+‐T configur…
Steady flow of a liquid film along sinusoidal, steeply corrugated walls is investigated by finite-element simulation of the 2D Navier-Stokes equations. Resonance between the wall and capillary-gravity waves travelling against the flow defines a critical Re and separates the flow into a subcritical and a supercritical…
The crystal structure of walstromite, ideally BaCa 2 Si 3 O 9 , was refined with data from single-crystal X-ray diffraction on a natural specimen from the type locality Esquire No. 8 claim, Big Creek, Fresno County, California, U.S.A. It is triclinic, with space group P1̄ and unit-cell parameters a = 6.7335(2), b = 9.…