in this research, the chemimechanical pulps (cmp) with different yields were prepared by using the mixtures of constant raw materials comprising iranian hardwood species such as hornbeam (44%), poplar (31%), maple (15%) and salix (10%). this research was aiming to study cmp pulp properties variations in yields lower than standard limit (85%). four different yields (84, 80, 73 and 67%) were achi...

the moe and mor are controlled by production variables of particleboard process. now, the basic question is which of the particleboard variables is effective on bending strength property? 13 variables of internal scientific resources were measured with 100 repeats. the study steps include the following; liner regression or stepwise, genetic algorithm, and artificial neural network. the number o...

As a crucial substrate material for optoelectronic materials, sapphire has important applications in both military and civilian fields. In order to achieve the final processing quality of double-sided chemical mechanical polishing (DS-CMP) is necessary process, which also guarantee preparation high-end LED chips. this article, DS-CMP plan based on Box-Behnken design obtained experimented. Then,...

In this study, a self-designed simultaneous crossflow electrocoagulation/electrofiltration (EC/EF) treatment module was evaluated for its overall reatment performance by treating chemical mechanical polishing (CMP) wastewaters including Cu-CMP wastewater and oxide-CMP wastewater. he critical electric field strengths for Cu-CMP and oxide-CMP wastewaters were determined to be 35 and 30 V/cm, resp...

A novel approach of chemical mechanical polishing (CMP) is developed for mercury cadmium telluride (HgCdTe or MCT) semiconductors. Firstly, fixed-abrasive lapping is used to machine the MCT wafers, and the lapping solution is deionized water. Secondly, the MCT wafers are polished using the developed CMP slurry. The CMP slurry consists of mainly SiO2 nanospheres, H2O2, and malic and citric acids...

It has been suggested that spirometry should be incorporated into the routine examination of every patient, analogous to obtaining vital signs. To determine the impact of spirometry on the management of outpatients with respiratory disease, spirometry was performed on 150 consecutive patients (123 men and 27 women, mean age 57 +/- 12 years) seen in our pulmonary disease outpatient clinics. Pati...

Fluid Catalytic Cracking (FCC) process is a vital unit to produce gasoline. In this research, a feed forward ANN model was developed and trained with industrial data to investigate the effect of operating variables containing reactor temperature feed flow rate, the temperature of the top of the main column and the temperature of the bottom of the debutanizer tower on quality and quantity of...