Nano-size maghemite (γ-Fe2O3) particles were prepared in one step using ultrasound radiation. The obtained nanoparticles were characterized by SEM, TEM , XRD, FTIR, and VSM. The results revealed that the synthesized nanoparticles were spherical, mono-dispersed and uniform. Furthermore, the crystalline structure of nanoparticles endorsed by X-ray diffraction study. The FTIR spectra have provided...

The effects of dietary fatty acid (FA) and starch content as well supplemental digestible Lys (sdLys) on production, energy utilization, N utilization were evaluated. Each factor was fed at 5 different amounts, limits follows: 3.0 to 6.2% dry matter (DM) for FA; 20.2 31.3% DM starch, 0 17.8 g/d sdLys. Dietary FA increased by replacing soyhulls with fat corn grain, respectively, sdLys rumen-prot...

The marketing materials of remote eye-trackers suggest that data quality is invariant to the position and orientation of the participant as long as the eyes of the participant are within the eye-tracker's headbox, the area where tracking is possible. As such, remote eye-trackers are marketed as allowing the reliable recording of gaze from participant groups that cannot be restrained, such as in...

ôbjectives: diagnosis of the psychiatric diseases is a bit challenging at the first interview due to this fact that qualitative criteria are not as accurate as quantitative ones. here, the objective is to classify schizophrenic patients from the healthy subject using a quantitative index elicited from their electroencephalogram (ëëg) signals. methods: ten right handed male patients with schizop...

In their quest to optimise treatment strategies, neonatologists may sometimes be tempted to extrapolate results obtained during the care of very immature to more mature neonates, assuming that what is right in the former, most fragile infants cannot be wrong in the latter. A study from Tokyo, however, highlights the potential risks associated with such generalisations: in an audit of neonatal c...

A dynamic simulation model of a 3-ply paperboard production process was developed. The simulation model consists of stock preparation and proportioning, short circulations, wire and press sections, and 75 drying cylinders including the steam and condensate system. Functionality of the automatic grade change program used on the machine was modeled as well. Physical, first principles models were ...

Concentric mixing experiments with velocity ratios of up to 6 have been completed using hardwood pulp of 1.0, 1.9, and 2.9% consistency and water. Qualitative observations reveal that by increasing the velocity ratio, the inner jet spread angle is found to be larger (i.e., the jet spreads faster) and the downstream mixing region is more uniform. Furthermore, local consistency measurements show ...

At the division of Paper Technology a forming unit consisting of headbox, forming roll unit and reservoir system for suspension recirculation has been constructed, with the main purpose to experimentally study the paper forming event by visually following the fibre flow phenomena in the forming zone. The effect of various running parameters upon the pressure distribution, which is in correlatio...

This paper presents a method for tuning the feedback controller of paper machine cross-directional control systems. The tuning method is based on identification of the process model, identification of the disturbance model and tuning the feedback controller by minimizing the paper property variations. To obtain a longer disturbance realization sequence and increase data available for identifica...