Medical and Biomedical Researches

Structure and Dynamics of a Bisurea-Based Supramolecular Polymer in n-Dodecane.

June 29th, 2008
Structure and Dynamics of a Bisurea-Based Supramolecular Polymer in n-Dodecane. The structure and dynamics of a supramolecular polymer formed by a bisurea-type compound, 2,4-bis(2-ethylhexylureido)toluene (EHUT), in an apolar solvent, n-dodecane (C 12), were examined in detail. The EHUT/C 12 organo-gel system forms long, dynamic chain-like supramolecular ...

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Photosensitized Breakage and Damage of DNA by CdSe-ZnS Quantum Dots.

June 29th, 2008
Photosensitized Breakage and Damage of DNA by CdSe-ZnS Quantum Dots. Strand breakages and nucleobase damages in plasmid DNA (pDNA) by CdSe-ZnS quantum dots (QDs) are investigated under different conditions of photoactivation. Here, streptavidin functionalized CdSe-ZnS QDs are conjugated to biotinylated pDNA, and photosensitized strand breakages and ...

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Mixture Diffusion in Nanoporous Adsorbents: Equivalence of Fickian and Maxwell-Stefan Approaches.

June 29th, 2008
Mixture Diffusion in Nanoporous Adsorbents: Equivalence of Fickian and Maxwell-Stefan Approaches. Nanopore diffusion in multicomponent adsorption is described using different macroscopic theories: Onsager irreversible thermodynamics, Maxwell-Stefan, and Fickian approaches. A new equivalence between Fickian and Maxwell-Stefan formulations is described by [ D] = [ n (s)][ ...

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Role of Methyl in the Phase Transition of Poly(N-isopropylmethacrylamide).

June 29th, 2008
Role of Methyl in the Phase Transition of Poly(N-isopropylmethacrylamide). Poly( N-isopropylmethacrylamide) (PiPMA) has one more methyl group at each monomeric unit than poly( N-isopropylacrylamide) (PiPA). By use of laser light scattering (LLS) and ultrasensitive differential scanning calorimetry (US-DSC) we have investigated the association and dissociation of ...

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Statistical Rate Theory Determination of Water Properties below the Triple Point.

June 29th, 2008
Statistical Rate Theory Determination of Water Properties below the Triple Point. We report a new method for determining the saturation vapor pressure, P s( T), of water at conditions below its triple point. P s( T) appears as a parameter in the statistical rate theory (SRT) ...

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Dynamics of Poly(l-lysine) in Hyaluronic Acid/Poly(l-lysine) Multilayer Films Studied by Fluorescenc

June 29th, 2008
Dynamics of Poly(l-lysine) in Hyaluronic Acid/Poly(l-lysine) Multilayer Films Studied by Fluorescence Recovery after Pattern Photobleaching. Poly( l-lysine) (PLL)/hyaluronic acid (HA) multilayers are films whose thickness increases exponentially with the number of deposition steps. Such a growth process was attributed to the diffusion, in and out of ...

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Control over Surface DNA Density on Gold Nanoparticles Allows Selective and Sensitive Detection of M

June 29th, 2008
Control over Surface DNA Density on Gold Nanoparticles Allows Selective and Sensitive Detection of Mercury(II). We have developed a new highly selective and sensitive technique for the detection of Hg (2+) using DNA-functionalized gold nanoparticles (Au NPs) and OliGreen. This system is the first that allows ...

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In Situ Particle Film ATR FTIR Spectroscopy of Carboxymethyl Cellulose Adsorption on Talc: Binding M

June 29th, 2008
In Situ Particle Film ATR FTIR Spectroscopy of Carboxymethyl Cellulose Adsorption on Talc: Binding Mechanism, pH Effects, and Adsorption Kinetics. Carboxymethyl cellulose (CMC), in solution and adsorbed on the surface of talc, has been studied with ATR FTIR spectroscopy as a function of the solution pH. ...

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Tracing Coffee Tabletop Traces.

June 29th, 2008
Tracing Coffee Tabletop Traces. Crystallization processes under different conditions are of fundamental interest in chemistry, pharmacy, and medicine. Therefore, we have studied the formation of micro- and nanosized crystals using water-caffeine (1,3,7-trimethyl-1 H-purine-2,6(3 H,7 H)-dione) solutions under ambient conditions as a relevant model system. When droplets ...

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Self-Assembly in Mixed Dialkyl Chain Cationic-Nonionic Surfactant Mixtures: Dihexadecyldimethyl Ammo

June 29th, 2008
Self-Assembly in Mixed Dialkyl Chain Cationic-Nonionic Surfactant Mixtures: Dihexadecyldimethyl Ammonium Bromide-Monododecyl Hexaethylene Glycol (Monododecyl Dodecaethylene Glycol) Mixtures. The self-assembly of dialkyl chain cationic surfactant dihexadecyldimethyl ammonium bromide, DHDAB, and nonionic surfactants monododecyl hexaethylene glycol, C 12E 6, and monododecyl dodecaethylene glycol, C 12E 12, mixtures has ...

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Adsorption of Highly Charged Polyelectrolytes onto an Oppositely Charged Porous Substrate.

June 29th, 2008
Adsorption of Highly Charged Polyelectrolytes onto an Oppositely Charged Porous Substrate. The adsorption behavior of highly charged cationic polyelectrolytes onto porous substrates is electrostatic in nature and has been shown to be highly dependent on the polyelectrolyte properties. Copolymers of acrylamide (AM) and diallyldimethylammonium chloride (DADMAC) ...

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Identification of tumor-associated antigens by large-scale analysis of genes expressed in human colo

June 29th, 2008
Identification of tumor-associated antigens by large-scale analysis of genes expressed in human colorectal cancer. Despite the high prevalence of colon cancer in the world and the great interest in targeted anti-cancer therapy, only few tumor-specific gene products have been identified that could serve as targets for ...

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Genospecies of Borrelia burgdorferi sensu lato in patients with erythema migrans.

June 29th, 2008
Genospecies of Borrelia burgdorferi sensu lato in patients with erythema migrans. Borrelia burgdorferi sensu lato (s.l.) complex, the etiological factor of Lyme disease, includes over a dozen species of bacteria and 3 pathogenic within it. According to many authors, the clinical symptoms of borreliosis depend on ...

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Catfish stings and the venom apparatus of the African catfish Clarias gariepinus (Burchell, 1822), a

June 29th, 2008
Catfish stings and the venom apparatus of the African catfish Clarias gariepinus (Burchell, 1822), and stinging catfish Heteropneustes fossilis (Bloch, 1794). The ability of catfish to inflict extremely painful wounds with their pectoral and dorsal stings has been well known for many decades. The venom apparatus ...

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In vitro study of pro-inflammatory and anti-tumour properties of microvesicles from bacterial cell w

June 29th, 2008
In vitro study of pro-inflammatory and anti-tumour properties of microvesicles from bacterial cell wall of Pantoea agglomerans. In the environment, Gram-negative bacteria are capable of producing large amounts of endotoxin-containing microvesicles - spherical structures measuring 30-50 nm in diameter, emerging by fragmentation of the outer membrane ...

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Occurrence of overweight and obesity among adult rural population in Eastern Poland. Relationship be

June 29th, 2008
Occurrence of overweight and obesity among adult rural population in Eastern Poland. Relationship between obesity and selected socio-economic factors. The objective of the study was evaluation of the prevalence of overweight, obesity and abdominal obesity among adult rural population in the Lublin Region, and the relationship ...

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Monitoring Legionella species in hospital water systems. Link with disease and evaluation of differe

June 29th, 2008
Monitoring Legionella species in hospital water systems. Link with disease and evaluation of different detection methods. The aim of this work was to evaluate three currently available isolation methods for Legionella using water samples and swabs of a single pediatric hospital water system. Additionally, high risk ...

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Gram-negative bacteria in water distribution systems of hospitals.

June 29th, 2008
Gram-negative bacteria in water distribution systems of hospitals. A total of 67 samples of tap water were collected from faucets and showerheads in 6 hospitals located in the Lublin province (eastern Poland). The samples were examined for the presence and species composition of Legionella, Gram-negative bacteria ...

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Evaluation of Salmonella rod incidence in poultry in the Lublin Province over the years 2001-2005.

June 29th, 2008
Evaluation of Salmonella rod incidence in poultry in the Lublin Province over the years 2001-2005. The researches included geese, broiler chickens and reproductive laying hens. The occurrence of Salmonella rods assigned to the serovars in the bird flocks was assessed for the years 2001-2005. In geese, ...

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Airborne ragweed (Ambrosia artemisiifolia L.) pollen content in the city of Zagreb and implications

June 29th, 2008
Airborne ragweed (Ambrosia artemisiifolia L.) pollen content in the city of Zagreb and implications on pollen allergy. The increasing problem of sensitization to Ambrosia pollen in Europe has stimulated studies on Ambrosia pollen occurrence and pollinosis in Croatia. The aim of this study was to analyze ...

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Seroprevalence of antibodies to Coxiella burnetii among employees of the Veterinary University in Ko

June 29th, 2008
Seroprevalence of antibodies to Coxiella burnetii among employees of the Veterinary University in Kosice, eastern Slovakia. Coxiella burnetii is an obligate intracellular pathogen known to be the causative agent of Q fever, a zoonosis with worldwide occurrence. The organism has been found in many wild and ...

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The fertilization potential of donor semen between 1982 and 2004 in the industrial area of Upper Sil

June 29th, 2008
The fertilization potential of donor semen between 1982 and 2004 in the industrial area of Upper Silesia (Poland). The industrial area of Upper Silesia is the most polluted region in Poland. To assess if these conditions could influence male fertility, a retrospective analysis of the fertilization ...

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Enumerating outdoor aeromycota in suburban West Bengal, India, with reference to respiratory allergy

June 29th, 2008
Enumerating outdoor aeromycota in suburban West Bengal, India, with reference to respiratory allergy and meteorological factors. Aeromycota may act as a reservoir of aeroallergens and upon inhalation may induce IgE-mediated Type I hypersensitivity reaction in pre-sensitized individuals. The total aerospora of an outdoor occupational setting (agricultural ...

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FISH detection of chromosome 1 aberration in human interphase and metaphase lymphocytes after exposu

June 29th, 2008
FISH detection of chromosome 1 aberration in human interphase and metaphase lymphocytes after exposure to benzene. Benzene is a relatively common environmental and occupational contaminant with carcinogenic and clastogenic properties. Therefore, further understanding of the adverse effect of benzene is still a matter of interest. In ...

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47 annual records of allergenic fungi spore: Predictive models from the NW Iberian Peninsula.

June 29th, 2008
47 annual records of allergenic fungi spore: Predictive models from the NW Iberian Peninsula. An analysis was carried out of the atmospheric representivity of Cladosporium and Alternaria spores in the north-western Iberian Peninsula, registering mean annual concentrations in excess of 300,000 spores/m(3). During the main sporulation ...

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