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Physicochemical Phenomena (12):
Recent article
Physicochemical Phenomena
Abstract
Dichlorodiphenyltrichloroethane (DDT) is still used in Africa for the indoor control of malaria and it may represent a potential hazard for wildlife. The littoral sediments of two alkaline-saline lakes, Natron (Tanzania) and Bogoria (Kenya), in the Eastern Rift Valley, supporting lar...
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PMID: 21809777
PDF is available here.
PDF is available here.
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Abstract
Antioxidant activity and quality parameters of skin-on apple wedges from 10 cultivars were examined during chill storage and over two growing seasons. Storage of fresh-cut apple wedges had a significant impact on quality parameter indices such as browning index (p < 0.001) and textur...
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PMID: 21652764
PDF is available here.
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
PDF is available here.
PDF is available here.
Abstract
Currently, studies often focus on the use of Poaceae species (grasses) for phytoremediation of hydrocarbon-contaminated soils. Research into the use of Fabaceae species (legumes) to remediate hydrocarbons in soils has been conducted, but these plants are commonly overlooked due to slower recorded rat...
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PMID: 21598795
PDF is available here.
PDF is available here.
Abstract
Dental cements are designed to retain restorations, prefabricated or cast posts and cores, and appliances in a stable, and long-lasting position in the oral environment. Resin-based cements were developed to overcome drawbacks of nonresinous materials, including low strength, high solubility, and opa...
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PMID: 21473996
PDF is available here.
PDF is available here.
Abstract
The aim of this work was to investigate the effect of pre-cure freezing on the physicochemical, texture and sensory characteristics of raw and dry-cured hams. Both, refrigerated (R) and pre-cure frozen (F) hams showed the same weight losses during the processing. At the green stage F Iberian hams had...
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PMID: 21441388
PDF is available here.
PDF is available here.
Abstract
The growing sensibility toward those foods that are characterized by natural and healthy features has raised the interest toward alternative wheat cereals. This research was carried out to compare the technological characteristics and the bread-making quality of Khorasan wheat, type Kamut and spelt (...
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PMID: 21421673
PDF is available here.
PDF is available here.
Abstract
A tomato flavor enhancer, 2-isobutylthiazole (IBT), was added (5 mg/kg) to dressings emulsified with either a whey protein concentrate-80 (WPC-80), a WPC-80 hydrolysate or β-lactoglobulin at high pressure (70 MPa) at either 20 or 75 °C. The short (2-4 min), high-temperature treatment left the prote...
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PMID: 21436234
PDF is available here.
PDF is available here.
Abstract
Due to the great volume of banana skin resulting from the industrialization of banana and to their high pectin content, the objectives of the present study were to evaluate the effect of the following factors: extract/sugar, pectin and citric acid on the chemical, physical and sensory qualities of th...
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PMID: 21436232
PDF is available here.
PDF is available here.
Abstract
Shelf-life of frankfurters depends on various factors such as its composition, packaging material and method used as well as the effect of external conditions (temperature). The objective of this study was to determine the shelf-life of packaged (vacuum, shrink and modified atmosphere, MA) chicken fr...
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PMID: 21436233
PDF is available here.
PDF is available here.
Abstract
The foam of sparkling wines is a key parameter of their quality. However, the compounds that are directly involved in foam formation and stabilization are not yet completely established. In this work, seven sparkling wines were produced in Bairrada appellation (Portugal) under different conditions an...
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PMID: 21375299
PDF is available here.
PDF is available here.
Abstract
We characterized plants and soils from an abandoned Pb-Zn mine in the Basque Country (northern Spain). Soil in this area proved to be deficient in major macronutrients and to contain toxic levels of Cd, Pb, and Zn. Spontaneously growing native plants (belonging to 31 species, 28 genera, and 15 famil...
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PMID: 21598791
PDF is available here.
PDF is available here.
Abstract
To review the current status and understanding of Portland cement-like endodontic materials commonly referred to by the trade designation "MTA" (alias "Mineral Trioxide Aggregate"), and to present an outline setting reaction scheme, hitherto unattempted.
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PMID: 21353694
PDF is available here.
PDF is available here.
Environmental Science (32)2 2011
Abstract
In this paper, the adsorption characteristics of two synthetic organic compounds (SOCs), i. e., methyl parathion(MP) and trichloroethylene (TCE), and natural organic matter (NOM) on powdered activated carbons (PAC) in natural water were studied. On the basis of fully characterizing the physical and c...
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PMID: 21528573
PDF is available here.
PDF is available here.
Abstract
To characterize in vitro the formation and robustness of a layer formed on dentin following treatment with a fluoridated toothpaste containing calcium sodium phosphosilicate (NovaMin) using modem imaging and analysis techniques.
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PMID: 21905400
PDF is available here.
PDF is available here.
Abstract
Neonicotinoids are the newest of the five major classes of insecticides (the others are chlorinated hydrocarbons, organophosphorus compounds, methylcarbamates, and pyrethroids), and they make up approximately one-fourth of the world insecticide market. Nithiazine was the lead compound from Shell Deve...
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PMID: 21077684
PDF is available here.
PDF is available here.
Abstract
We describe the basic actions of nanoparticles, and we discuss their potential applications in atherosclerosis. We also discuss their advantages and we expose the existing toxicity issues, making it clear however, that the use of nanoparticles is one of the most promising therapeutic strategies agai...
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PMID: 20695841
PDF is available here.
PDF is available here.
Journal of Dairy Science (93)10 2010
Abstract
Reduced- and low-fat cheeses are desired based on composition but often fall short on overall quality. One of the major problems with fat reduction in cheese is the development of a firm texture that does not break down during mastication, unlike that observed in full-fat cheeses. The objective of t...
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PMID: 20854990
PDF is available here.
PDF is available here.
Abstract
The physicochemical properties of candidate compounds play important roles in the design of new pesticides. Pesticides must be absorbed by pests, be transported to the target site, and then interact with proteins. Hydrophobicity is very important for these processes. Log P, where P is the partition c...
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PMID: 20879794
PDF is available here.
PDF is available here.
Abstract
The empirical and physiological predictive approaches to human clearance were evaluated using preclinical in vitro and in vivo data of various datasets to establish a methodology for the prediction of clearance. Among the examined empirical approaches, an allometric scaling method with the rule of ex...
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PMID: 20830811
PDF is available here.
PDF is available here.
Abstract
Corticosteroids are therapeutic agents widely used in the pharmacological treatment of skin diseases such as eczema or psoriasis. Unfortunately, their use is restricted by the side effects that frequently occur at the systemic level. The goal of the research described here was to develop and characte...
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PMID: 20839362
PDF is available here.
PDF is available here.
Abstract
Tissue engineering is a promising area with a broad range of applications in the fields of regenerative medicine and human health. The emergence of periodontal tissue engineering for clinical treatment of periodontal disease has opened a new therapeutic avenue. The choice of scaffold is crucial. Thi...
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PMID: 21125792
PDF is available here.
PDF is available here.
Abstract
To explore the correlation between physical and chemical parameters of oil-bearing water bodies and ultrafiltration flux in the four simulative system of traditional Chinese medicine ( TCM) volatile oil.
Four simulative systems of TCM oil-bearing water bodies such as Tsao-ko Amomum Fruit were select...
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PMID: 21137336
PDF is available here.
PDF is available here.
Abstract
In this study, medium-chain fatty acid (MCFA) liposomes were prepared by the film ultrasonic dispersion, modified ethanol injection, and reverse-phase evaporate methods. The results indicated that the liposomes prepared by the thin-film ultrasonic dispersion method had a high entrapment efficiency o...
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PMID: 19848446
PDF is available here.
PDF is available here.
Dental Materials Journal (29)4 2010
Abstract
Six thermoplastic resins and conventional acrylic resin were examined to characterize their mechanical and physical properties, water sorption, solubility, flexural strength, modulus of elasticity, tensile strength and color stability. Thermoplastic resins for non-metal clasp dentures exhibiting low...
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PMID: 20644329
PDF is available here.
PDF is available here.
Abstract
Chitosan (CS) with two different molecular weight were modified by reacting with methyl hydrazine-dithiocarboxylate and methyl phenylhydrazine-dithiocarboxylate to give 2-(hydrazine-thiosemicarbazone)-chitosan (2-HTCHCS, 2-HTCLCS) and 2-(phenylhydrazine-thiosemicarbazone)-chitosan (2-PHTCHCS, 2-PHTC...
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PMID: 20553752
PDF is available here.
PDF is available here.
Abstract
To study relationships between the main active ingredients and physical and chemical parameters of dangguibuxue decoction, and to explore the feasibility of characterization the quality of decoction by physical and chemical parameters.
Solutions of ferulic acid and astragaloside with different conce...
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PMID: 20931844
PDF is available here.
PDF is available here.
Abstract
To study the hasubanan type alkaloids in Stephania hernandifolia.
The dried herbs of S. hernandifolia. were extracted with 95% ethanol. After removal of the solvent, the residue was first partitioned between acid water and petroleum ether, then the aqueous layer was basified and extracted with chlor...
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PMID: 20931849
PDF is available here.
PDF is available here.
Journal of Dairy Science (93)8 2010
Abstract
Fat-reduced cheeses often suffer from undesirable texture, flavor, and cooking properties. Exopolysaccharides (EPS) produced by starter strains have been proposed as a mechanism to increase yield and to improve the texture and cooking properties of reduced-fat cheeses. The objective of this work was...
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PMID: 20655415
PDF is available here.
PDF is available here.
Abstract
A cost-effective way to reduce half-life for the degradation of PHC of contaminated soil of the refinery will be a periodic revolving of the soil, like tillage, in order to expose to the oxidative atmosphere the different layers of contaminated soil. A combination of soil revolving with bioaugmentat...
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PMID: 20229281
PDF is available here.
PDF is available here.
Abstract
The obtained results evidence a strong textural and mineralogical correlation between the whole rock of the megalith and the collected samples of the nearby outcrops; both are classified as calcarenite. A uniformly distributed beige-orange patina (35-100 microm thick) covering the surface of the ste...
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PMID: 20213307
PDF is available here.
PDF is available here.
Abstract
In recent years, neonicotinoid insecticides have been the fastest growing class of insecticides in modern crop protection, with widespread use against a broad spectrum of sucking and certain chewing pests. As potent agonists, they act selectively on insect nicotinic acetylcholine receptors (nAChRs),...
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PMID: 20565065
PDF is available here.
PDF is available here.
Abstract
This work focused on the development of mucoadhesive and floating chitosan-coated alginate beads as a gastroretensive delivery vehicle for amoxicillin, towards the effective eradication of Helicobacter pylori, a major causative agent of peptic ulcers. Alginate was used as the core bead core polymer...
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PMID: 20607494
PDF is available here.
PDF is available here.
Abstract
Solid dispersions of artemether (ARM), a poorly soluble drug, were prepared using polyvinylpyrrolidone (PVPK25, MW 25000) and polyethyleneglycol (PEG4000, MW 4000) as excipients. These dispersions were studied by physical mixture, freeze-drying, and melting methods. They were characterized by X-ray...
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PMID: 20607495
PDF is available here.
PDF is available here.
Abstract
We found that PVP-sodium cholate-phospholipid mixed micelles showed good stability. After 3 months storage at 40 degrees C, just 2.6% sylibin was lost with only minor changes of the particle size when compared to a reference formulation containing sodium cholate and phospholipid mixed micelles. In a...
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PMID: 20607496
PDF is available here.
PDF is available here.
Abstract
We conducted analyses on physicochemical descriptors of commercially available compounds, clinical candidates, and launched drugs. Initial analysis of the marginal distribution of each physicochemical property showed that the distribution of commercially available compounds obeys a more normal distr...
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PMID: 20394396
PDF is available here.
PDF is available here.
Neurochemical Research (35)5 2010
Abstract
The formation of cell membranes through the physical-chemical interaction of two hydrophilic colloidal fluids is applied to the formation of the membranes of brain and neural cells. Also described is the membrane mechanism of transfer of ions and compounds necessary for brain and neural cell functio...
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PMID: 20094775
PDF is available here.
PDF is available here.
Abstract
A multi-scale parameterization approach, factor analysis scales of generalized amino acid information combined with auto cross covariance, was used to develop quantitative sequence-activity models of peptides using support vector machines. The results demonstrated that this approach could well chara...
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PMID: 20443765
PDF is available here.
PDF is available here.
Amino Acids (38)4 2010
Abstract
We employed this approach, coupled with partial least square (PLS) regression and genetic algorithm (GA), to predict and to interpret the peptide-binding behavior to SH3 domain. In comparison with the previous works, our method is more capable of capturing important factors in the SH3 domain-peptide...
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PMID: 19669081
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
A fluorescently labeled 20-residue polyglutamic acid (polyE) peptide 20 amino acid length polyglutamic acid (E(20)) was used to study structural changes which occur in E(20) as it co-aggregates with other unlabeled polyE peptides. Resonance energy transfer (RET) was performed using a...
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PMID: 19927295
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
Effects of hydrophobic and electrostatic interactions on the self-assembling process of the ionic-complementary peptide EMK16-II are investigated by atomic force microscopy imaging, circular dichroism spectra, light scattering, and chromatography. It is found that the hydrophobicity...
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PMID: 19885921
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
A fluorescently labeled 20-residue polyglutamic acid (polyE) peptide 20 amino acid length polyglutamic acid (E(20)) was used to study structural changes which occur in E(20) as it co-aggregates with other unlabeled polyE peptides. Resonance energy transfer (RET) was performed using a...
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PMID: 19927295
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
Effects of hydrophobic and electrostatic interactions on the self-assembling process of the ionic-complementary peptide EMK16-II are investigated by atomic force microscopy imaging, circular dichroism spectra, light scattering, and chromatography. It is found that the hydrophobicity...
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PMID: 19885921
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
A fluorescently labeled 20-residue polyglutamic acid (polyE) peptide 20 amino acid length polyglutamic acid (E(20)) was used to study structural changes which occur in E(20) as it co-aggregates with other unlabeled polyE peptides. Resonance energy transfer (RET) was performed using a...
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PMID: 19927295
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
Effects of hydrophobic and electrostatic interactions on the self-assembling process of the ionic-complementary peptide EMK16-II are investigated by atomic force microscopy imaging, circular dichroism spectra, light scattering, and chromatography. It is found that the hydrophobicity...
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PMID: 19885921
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
A fluorescently labeled 20-residue polyglutamic acid (polyE) peptide 20 amino acid length polyglutamic acid (E(20)) was used to study structural changes which occur in E(20) as it co-aggregates with other unlabeled polyE peptides. Resonance energy transfer (RET) was performed using a...
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PMID: 19927295
PDF is available here.
PDF is available here.
Biopolymers (93)4 2010
Abstract
Effects of hydrophobic and electrostatic interactions on the self-assembling process of the ionic-complementary peptide EMK16-II are investigated by atomic force microscopy imaging, circular dichroism spectra, light scattering, and chromatography. It is found that the hydrophobicity...
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PMID: 19885921
PDF is available here.
PDF is available here.
Journal of Biochemistry (147)4 2010
Abstract
Two-dimensional crystalline arrays of periodic mesoporous nanostructures, consisting of alpha/beta-tubulin ring-shaped oligomers in the double-layered architecture in an apolar arrangement are successfully prepared with PEM-G buffer containing Arginine nonamers and observed by electron microscopy. T...
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PMID: 19959504
PDF is available here.
PDF is available here.
Abstract
The sulfation of a water-insoluble Ganoderma lucidum polysaccharide (GLP) was successfully carried out with chlorosulfonic acid-pyridine in dimethyl formamide to prepare three sulfated GLP derivatives, named sGLP1, sGLP2, and sGLP3. The chemical structure of the sulfated GLP was confirmed by Fourier...
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PMID: 20163182
PDF is available here.
PDF is available here.
Biopolymers (93)8 2010
Abstract
We describe a type I collagen formulation that is acid solubilized from porcine skin (PSC), quality controlled based upon polymerization potential, and well suited as a platform polymer for preparing three-dimensional (3D) culture systems and injectable/implantable in-vivo cellular microenvironments...
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PMID: 20235198
PDF is available here.
PDF is available here.
Journal of Endodontics (36)3 2010
Abstract
The clinical handling and washout resistance of the alternative materials were far superior to WMTA. The radiopacity, compressive strength, and washout resistance make Generex-A and Capasio materials suitable for further study. Ceramicrete-D was weaker, less radiopaque, and initially acidic.
Copyrig...
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PMID: 20171376
PDF is available here.
PDF is available here.
Water Research (44)5 2010
Abstract
The effects of addition of six types of flocculants (aluminium sulfate, ferric chloride, polyaluminium chloride, polymeric ferric sulfate, Chitosan, polyacrylamide) on mitigation of membrane fouling in membrane bioreactors (MBR) were investigated respectively. The biomasses in various MBRs were char...
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PMID: 19954810
PDF is available here.
PDF is available here.
Physical Biology (7)1 2010
Abstract
The effect of target molecule depletion from the supernatant solution is incorporated into a physico-chemical model of hybridization on oligonucleotide microarrays. Two possible regimes are identified: local depletion, in which depletion by a given probe feature only affects that particular probe, a...
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PMID: 20026877
PDF is available here.
PDF is available here.
Abstract
The objective of this study was to compare the nutritional values of camel semitendinosus muscles with those of calves. Then, sausages were made from camel meat, beef and equal proportions of each and stored at 4 degrees C for 45 days. The composition, physicochemical characteristics, sensory proper...
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PMID: 20095913
PDF is available here.
PDF is available here.
Abstract
Two ready-to-eat minced fish products from hake were developed, their proximate composition and fatty acid profiles determined and their quality changes followed during 3.5 months under refrigeration at 2 ± 1 °C and 10 ± 1 °C. These products contain dietary fiber and are innovati...
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PMID: 21339119
PDF is available here.
PDF is available here.
Abstract
We characterized the physicochemical properties of this protein. We report that purified TasA forms fibers of variable length and 10-15 nm in width. Biochemical analyses, in combination with the use of specific dyes and microscopic analyses, indicate that TasA forms amyloid fibers. Consistent with t...
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PMID: 20080671
PDF is available here.
PDF is available here.
Abstract
Camptothecin (CAM), a plant alkaloid and a potent antitumor agent, has a limited therapeutic utility because of its poor aqueous solubility, lactone ring instability and serious side effects. Cyclodextrin-based nanosponges (NS) are a novel class of cross-linked derivatives of cyclodextrins. They hav...
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PMID: 19900544
PDF is available here.
PDF is available here.
Abstract
The potential of osmotic pressure driven release of proteins from poly(trimethylene carbonate) and poly(trimethylene carbonate-co-d,l-lactide) (poly(TMC-co-DLLA)) elastomers with varying amounts of DLLA was investigated using bovine serum albumin (BSA) as a model protein. The BSA was co-lyophilized...
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PMID: 19948219
PDF is available here.
PDF is available here.
Abstract
The total mass attenuation coefficients (mu/rho) for pure Au and Au99Be1, Au88Ge12, Au95Zn5 alloys were measured at 59.5 and 88.0 keV photon energies. The samples were irradiated with 241Am and 109Cd radioactive point source using transmission arrangement. The gamma- rays were counted by a Si(Li) de...
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PMID: 20421703
PDF is available here.
PDF is available here.
Abstract
Dental caries is a multifactorial disease, in which saliva has an important role. Saliva properties affect the growth of cariogenic microorganisms, so variations below threshold levels are considered risk factors for the development of dental caries. Salivary tests and microbiological counts of cario...
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PMID: 21638968
PDF is available here.
PDF is available here.