To dispose of arsenic-containing tailings with low carbon and high efficiency, sodium sulphate (Na2SO4), hydroxide (NaOH), calcium nitrate Ca(NO3)2 Ca(OH)2 were independently added to metallurgical slag-based binder (MSB) solidification/stabilisation (S/S)-treated (MSTs) enhance the MST arsenic S/S performance. Results showed that only could increase unconfined compressive strength from 16.3 20...

a pedigree file consisting of 5860 individuals, 167 sires and 1582 dams collected at makooei sheep breeding station (msbs) during a period of 24 years (1990 to 2013) was used to calculate the inbreeding coefficients to reveal any probable effects of inbreeding (f) on the studied traits. the studied traits were classified to the five main groups including body weight, kleiber ratio, body measure...

PURPOSE To evaluate the microshear bond strength (μSBS) of several universal adhesive systems applied on five different indirect restorative materials. MATERIALS AND METHODS Five CAD/CAM materials were selected: 1) indirect resin composite (LAV); 2) feldspathic glass ceramic (VTR); 3) leucite-reinforced glass-ceramic (EMP); 4) lithium disilicate ceramic (EMX); 5) yttrium-stabilized zirconium ...

BACKGROUND Suicidal behavior (SB) is a major, worldwide health concern. To date there is limited understanding of the associated motivational aspects which accompany this self-initiated conduct. AIMS To develop a method for identifying motivational features associated with SB by studying admitted psychiatric patients, and to examine their clinical relevance. METHODS By performing a factor a...

Analog-to-digital converters (ADCs) are essential building blocks in many electronic systems which require digital signal processing and storage of analog signals. Traditionally, ADCs are considered a power hungry circuit. This thesis investigates ADC design techniques to achieve high-performance with low power consumption. Two designs are demonst rated. The first design is a voltage scalable z...

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We describe a floating-gate trimmed, 14-bit, 250Ms/s current-steered DAC fabricated in a 0.25μm CMOS logic process. We trim the static INL to ±0.3LSB using analog charge stored on floating-gate pFETs. The DAC occupies 0.44mm of die area, consumes 53mW at 250MHz, allows on-chip electrical trimming, and achieves 72dB SFDR at 250Ms/s. Introduction Emerging standards for communications systems requ...

Two-phase flow systems are prone to dynamic and static instabilities of many kinds. In the last few decades, a considerable amount of work on the two-phase flow instability has been carried out all over the world. Several numerical, experimental and analytical studies were conducted to understand two-phase flow instabilities and to derive the stability criteria. Theoretical modelling of density...

This paper presents several new array multiplier architectures for reducing the switching activity in general digital signal processing applications. A general cellular structure is described which can be used to obtain any array multiplier suitable for a given application. The switching activity at the output nodes of the cells in this structure is analyzed and compared with a tree multiplier ...