Introduction: Controversy remains as to the advantages and disadvantages of pharyngeal packing during septorhinoplasty. Our study investigated the effect of pharyngeal packing on postoperative nausea and vomiting and sore throat following this type of surgery or septorhinoplasty.   Materials and Methods: This clinical trial was performed on 90 American Society of Anesthesiologists (ASA) I or II...

The paper described a generalized integrated glance to bin packing problems including a brief literature survey and some new problem formulations for the cases of multiset estimates of items. A new systemic viewpoint to bin packing problems is suggested: (a) basic element sets (item set, bin set, item subset assigned to bin), (b) binary relation over the sets: relation over item set as compatib...

Fast-growing energy demands and the depletion of conventional fuel resources such as crude oil coal are among most recent issues treating world's security. Gaseous carriers methane hydrogen seem promising abundant alternative resources. However, these gasses' low volumetric density makes their storage cost extensive. High-pressure gas inside porous materials carbons is considered one way to tac...

The crystal structure of the title Schiff base complex is obtained by single-crystal X-ray diffraction data.The solid state structure determination reveals that the coordination geometry around the copper(II) center istetrahedrally distorted square-planar. The crystal packing shows one dimensional infinite chains which arisesfrom the intermolecular interaction and stabilize the crystal packing.

For a given positive integer v with v ≡ 4(mod 6) and v > 4, let CKPD(v) denote a canonical Kirkman packing design of order v. It is proved in this paper that any CKPD(v) can be embedded in a CKPD(u) if u ≡ v ≡ 4 (mod 6), v ≥ 82 and u ≥ 3.5v.

The present investigation entails a procedure by which the surface tension and viscosity of liquids could be redicted.To this end, capillary experiments were performed for porous media by utilizing fifteen different liquids and powders. The time of capillary rise to a certain known height of each liquid in a particular powder was recorded. Two artificial neural networks (ANNs) were...

Solidified natural gas technology shows significant potential for storing safely multi-fold volumes of in clathrate hydrates, but the main concern is stochastic and slow process hydrate nucleation making it unstable unpredictable practice. To overcome this limitation, methane was synthesized a silicon carbide (SiC) ceramic foam packing trays reactor without stirring. Results suggested that shou...

We survey lower bounds for the variant of the two-dimensional bin packing problem where items cannot be rotated. We prove that the dominance relation claimed by Carlier et al.[5] between their lower bounds and those of Boschetti and Mingozzi [1] is not valid. We analyze the performance of lower bounds from the literature and we provide the results of a computational experiment.

We prove that Best Fit bin packing has linear waste on the discrete distributionU{j, k} (where items are drawn uniformly from the set {1/k, 2/k, · · · , j/k}) for sufficiently large k when j = αk and 0.66 ≤ α < 2/3. Our results extend to continuous skewed distributions, where items are drawn uniformly on [0, a], for 0.66 ≤ a < 2/3. This implies that the expected asymptotic performance ratio of ...

Porous materials manufactured by freeze-casting are demonstrating potential application as oxygen carriers for the production and purification of hydrogen, or anode material lithium-ion batteries. However, to obtain required pore morphology sufficient mechanical strength, suspension processing parameters must be controlled. Fe2O3 nanoparticles/camphene suspensions were fabricated using stearic ...