The microscopic structure and pulping properties of palm fiber were explored. Soda cooking sulfate conducted compared in terms physical strength the obtained pulps. Sulfate pulp showed better performance than soda pulp, as indicated by 23% higher tensile index, 49% tear 36% burst index. To further elevate strength, long fibered (LFP), namely commercial softwood was mixed with at levels from 20%...

Strength additives play an important role in allowing the papermaking industry to achieve its objectives. In this study, a new kind of paper strengthening agent based on glucomannan was developed by treating it with sodium chloroacetate under alkaline conditions, and the effects on paper properties were evaluated. Results indicated that carboxymethylated glucomannan could significantly improve ...

A paper strength agent is an important type of chemical additive used in the papermaking industry. In this work some new paper strengthening agent samples were obtained by treating konjac glucomannan with hydrogen peroxide under acidic conditions, and their effects on paper properties were studied. Results showed that oxidized konjac glucomannan (OKG) can improve the paper properties effectivel...

We show some connections between psychodynamic view of the psychic system, in which dissociation is a basic element of the system dynamics, and neural level of the brain. The dissociation represents competition among complexes that correspond to ideas or mental representations in parallel distributed processing (PDP). In PDP models dissociation represents low synaptic strength among mental repr...

This study investigates effects of six kenaf cultivars named Cubano, Niger, Cubano 2032, 9277, 7551, and 7566 and three harvesting time stages on the properties of pulp and handsheet paper made from kenaf. Six cultivars of an Iranian kenaf (Hibiscus Cannabinus L.), were planted on 19 May 2007, and harvested after 85, 105, and 135 days. It was understood that with the increase of plant age, fibe...

Abstract MAXI J1816–195 is a newly discovered accreting millisecond pulsar with prolific thermonuclear bursts, detected during its outburst in 2022 June by Insight-HXMT and NICER. During the outburst, 73 bursts peak decay phase, serving as burst system found pulsars. By analyzing one that was simultaneously NICER, we find mild deviation from conventional blackbody model. stacking light curves o...

Application of strychnine and bicuculline to the isolated spinal cord of the neonatal rat induces spontaneous bursting of regular rhythmicity (cycle period approximately 30 s). This phenomenon is important because it shows that a spinal network, made up by excitatory connections only, generates a very reliable rhythmic pattern. To find out how signals from the periphery or higher centres might ...

I used sharp intracellular electrodes to record from parasol cells in the semi-isolated crayfish brain to investigate pacemaker currents. Evidence for the presence of the hyperpolarization-activated inward rectifier potassium current was obtained in about half of the parasol cells examined, where strong, prolonged hyperpolarizing currents generated a slowly-rising voltage sag, and a post-hyperp...