Abstract
The aim of this study was to evaluate the influence of immersion in a 0.2% peracetic acid-based disinfectant on the three-point flexural strength, water sorption and water solubility of an indirect composite resin. Specimens were produced according to ISO 4049:2000 specifications and were divided in...
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PMID: 21780726
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Abstract
Heat and moisture exchangers (HMEs) are used for airway humidification in mechanically ventilated patients and have been evaluated only under hospital conditions. U.S. Air Force aeromedical evacuation transports are performed under rugged conditions further complicated by the cold and dry environment...
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PMID: 21702383
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Abstract
Ultrasound velocimetry and densitometry methods were used to study the interactions of the Na,K-ATPase with the lipid bilayer in large unilamellar liposomes composed of dioleoyl phosphatidylcholine (DOPC). The ultrasound velocity increased and the specific volume of the phospholipids...
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PMID: 21613669
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Abstract
The paper presents the results of viscosity determinations on aqueous solutions of different mammalian serum albumins at a wide range of concentrations and at temperatures ranging from 278 K to 318 K. On the basis of these measurements and a modified Arrhenius equation, the functiona...
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PMID: 21613666
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Abstract
These results provide support to the suggestion that the STT for codling moth in pome fruit production areas might be evaluated and implemented by the importation of irradiated moths from rearing facilities in a different country or hemisphere....
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PMID: 21735898
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Abstract
The objective of this study was to determine how seasonal changes affect the foraging activity and wood consumption of the Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae), in New Orleans, LA. There was a significant correlation between wood consumption and ai...
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PMID: 21735925
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Abstract
The poplar petiolegall aphid, Pemphigus populitransversus Riley (Hemiptera: Pemphigidae), is a gall-forming aphid attacking leaf petioles of Populus spp., its primary hosts. Its secondary hosts are the roots of cruciferous (Brassicaceae) plants, where it is also commonly known as the "cabbage root ap...
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PMID: 21735937
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Abstract
Developmental rate and survivorship of small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae), life stages were measured across different temperatures (21, 25, 28, 32 and 35 degrees C) and diets, which included natural and artificial pollen, honey, and bee pupae. Temperature affected hatc...
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PMID: 21735891
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Abstract
A quarantine treatment using bale compression (32 kg/cm2 pressure) and phosphine fumigation (61 g/28.3 m3 aluminum phosphide for 7 d at 20 degrees C) was approved to control Hessian fly, Mayetiola destructor (Say), in large-size, polypropylene fabric-wrapped bales exported from the western states to...
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PMID: 21735895
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Abstract
Environmental variables such as temperature are important factors that affect the efficiency of biological control agents. This study examined the effect of temperature on the sex ratio, longevity, oviposition periods, fecundity and life table parameters of the predatory thrips Scolothrips longicorni...
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PMID: 21735896
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Abstract
We use three-dimensional geometric morphometrics methods and multivariate statistics to model and analyze the shape of the bony nasal cavity of 10 modern human population samples from five climatic groups. We report significant correlations between nasal cavity shape and climatic variables of both t...
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PMID: 21660932
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Abstract
Accurate prediction of pure compounds autoignition temperature (AIT) is of great importance. In this study, the Artificial Neural Network-Group Contribution (ANN-GC) method is applied to evaluate the AIT of pure compounds. 1025 pure compounds from various chemical families are invest...
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PMID: 21388737
PDF is available here.
Abstract
Membrane gas separation technologies (air separation, hydrogen recovery from dehydrogenation processes, etc.) use traditionally the glassy polymer membranes with dominating permeability of "small" gas molecules. For this purposes the membranes based on the low free volume glassy polymers (e.g., polys...
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PMID: 21094931
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Abstract
We are developing solid-state NMR (SSNMR) to probe the flavin electronic structure, via the (15)N chemical shift tensor principal values (δ(ii)). We find that SSNMR has superior responsiveness to H-bonds, compared to solution NMR. H-bonding to a model of the flavodoxin active site produced an incre...
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PMID: 21619002
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Abstract
We study ZnO in ethanol for which the influence of particle size and reactant ratio as well as surface coverage on colloidal stability in dependence of the purification progress was investigated. The results revealed that the well-known ζ-potential determines not only the colloidal stability but al...
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PMID: 21545143
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Abstract
The glass transition temperature of a broad class of molecules is shown to depend on molecular size. This dependency results from the size dependence of the pair potential. A generalized equation of state is used to estimate how the volume fraction at the glass transition depends on...
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PMID: 21728537
PDF is available here.
Abstract
We perform a molecular dynamics simulation study of the behavior of a lipid coating layer on an oscillating bubble surface. Micrometer sized bubbles, stabilized with a lipid monolayer coating, are used in acoustic imaging as a contrast agent. The coating layer is expected to be strongly influenced b...
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PMID: 21728546
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Abstract
The differential elastic modulus of an active actomyosin network is computed as a function of applied stress, taking into account both thermal and motor contributions to filament compliance in the low-frequency domain. It is shown that, due to a dual nature of motor activity, increas...
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PMID: 21728584
PDF is available here.
Abstract
This study introduces the use of high-frequency pulsed electric fields for tissue electroporation. Through the development of finite element models and the use of analytical techniques, electroporation with rectangular, bipolar pulses is investigated. The electric field and temperature distribution a...
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PMID: 21189230
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Abstract
We propose a method for interconnecting soft polyimide (PI) electrodes using anisotropic conductive films (ACFs). Reliable and automated bonding was achieved through development of a desktop thermocompressive bonding device that could simultaneously deliver appropriate temperatures and pressures to...
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PMID: 21189231
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Abstract
We isolated P. guilliermondii mutants overproducing riboflavin. Analysis of nucleotide sequence of recombination sites revealed that insertion cassettes integrated into the genome disrupting P. guilliermondii genes similar to the VMA1 gene of Ashbya gossypii and Saccharomyces cerevisiae and FES1 and...
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PMID: 21261808
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Abstract
We have therefore investigated the temperature dependence of the dose response for such dosimeters, regarding both irradiation and storage conditions.
Dosimeter samples in cuvettes were irradiated to 5 Gy. The temperature for the different cuvettes during irradiation and post-irradia...
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PMID: 21776817
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Abstract
We performed Fourier transform infrared spectroscopy with temperature, pH, and mutation-induced shifts in the conformer equilibrium, and found that both conformers when present in the unphotolyzed dark state contain an all-trans retinal configuration that is photoisomerized to 13-cis, i.e., the same...
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PMID: 21539785
PDF is available here.
Abstract
We found unstable microscopic domains (compositional/phase fluctuations) in the absence of ceramide, and macroscopically separated fluid and gel phases upon addition of ceramide. We also observed phase fluctuations in the presence of ceramide within the broad phase transition regions. We compare our...
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PMID: 21539783
PDF is available here.