Search results for "IBA"
showing 10 items of 1355 documents
Pirmsskolas vecuma bērnu gribas īpašību veidošanās kustību rotaļā
2019
Bakalaura darba „ Pirmsskolas vecuma bērnu gribas īpašības veidošanās kustību rotaļā” mērķis ir teorētiski un empīriski pētīt pirmsskolas vecuma bērnu gribas īpašību veidošanos kustību rotaļās. Darba uzdevumi: •Analizēt pedagoģijas un psiholoģijas zinātnieku atziņas par gribu un tās veidošanos. •Noskaidrot pirmsskolas vecuma bērnu gribas īpašību veidošanas iespējas kustību rotaļā. •Veikt pētījumu par pirmsskolas vecuma bērnu gribas īpašību veidošanos kustību rotaļās. Bakalaura darbs sastāv no ievada, divām daļām, secinājumiem, terminu skaidrojumiem, izmantotās literatūras avotu saraksta un pielikumiem. Pirmajā daļā autore raksturo gribas īpašību veidošanos, no dažādiem avotiem un autoru izt…
STUDIO RETROSPETTIVO SUI CONSUMI DI SODIO OXIBATO E SULLA TIPOLOGIA DI PAZIENTI DEL SERT DI TERMINI IMERESE
2013
In questo studio è stato preso in considerazione il consumo annuale di sodio oxibato della Farmacia Territoriale, dal 2009 al 2012, da parte del Ser.T di Termini Imerese. Si è voluto, inoltre, indagare sulla tipologia di pazienti ambulatoriali per avviare un successivo progetto di informazione e prevenzione rivolto alle scuole. Materiali e metodi: I dati relativi ai consumi sono stati estrapolati dal programma di magazzino della farmacia, mentre i dati relativi ai pazienti sono stati ricavati dal Sistema Informativo Sanitario del Ministero della Salute consultabile dai dipendenti del Ser.T. Risultati: La richiesta di sodio oxibato è cresciuta dal 2009 al 2011 per diminuire nel 2012 (60, 89,…
Determination of macrolide antibiotics in meat and fish using pressurized liquid extraction and liquid chromatography–mass spectrometry
2008
We developed a method for determining the quantities of seven macrolide antibiotics in meat and fish by using pressurized liquid extraction (PLE) and liquid chromatography-mass spectrometry with electrospray ionization (LC-(ESI)MS). The PLE was optimized with regard to solvents, temperature, pressure, extraction time and number of cycles. The optimum conditions were: methanol as the extraction solvent; a temperature of 80 degrees C; a pressure of 1500psi; an extraction time of 15min; 2 cycles; a flush volume of 150% and a purge time of 300s. All recoveries for macrolide antibiotics were over 77% at 200mug/kg, except for erythromycin, which was 58%. The repeatability and reproducibility on d…
Antibacterial effect of the bioactive compound beauvericin produced by Fusarium proliferatum on solid medium of wheat.
2010
To obtain the bioactive compound beauvericin (BEA), Fusarium proliferatum CECT 20569 was grown on a solid medium of wheat, utilizing the technique of the solid state fermentation (SSF), being this mycotoxin purified by high performance liquid chromatography (HPLC) with a reverse phase semi-preparative column using as the mobile phase acetonitrile/water in gradient condition. The purity of the BEA was verified by analytical HPLC and liquid chromatography tandem mass spectrometry (LC/MS-MS). The pure fractions of BEA were utilized to determinate the antibiotic effects on several bacterial strains that are considered normally pathogens of the intestinal tract as: Escherichia coli, Enterococcus…
Pyrocoll, an Antibiotic, Antiparasitic and Antitumor Compound Produced by a Novel Alkaliphilic Streptomyces Strain
2003
A new secondary metabolite was detected in the culture extract of Streptomyces sp. AK 409 by HPLC-diode-array screening. The metabolite was identified as pyrocoll, which is known to be a constituent of cigarette smoke. Pyrocoll is known as a synthetic compound, but until now had not been isolated as a natural product from a microorganism. The compound showed biological activity against various Arthrobacter strains, filamentous fungi, several pathogenic protozoa, and some human tumor cell lines.
Costs of courtship and mating in a sexually cannibalistic orb-web spider: female mating strategies and their consequences for males
2002
The costs of courtship and mating may include increased risks of predation, the transmission of pathogens, and a loss of foraging opportunities. Thus, a female's decision to tolerate a courting male will depend upon how these costs offset the benefits of mating, which will depend on her reproductive and nutritional status. While these costs may be similar for mated and unmated females, the benefits of mating will be less for mated than virgin females. However, the cost of lost foraging opportunities may be higher for females with fewer nutritional reserves necessary for forming eggs. We examined how these costs and benefits influence the courtship and mating behaviour of male and female orb…
Dispersal of microarthropods in forest soil
2001
Summary This experiment was a part of a research on the soil community in anthropogenous birch stands in Finland. In that study it was found that communities of Collembola are similar in birch stands of different origin (cultivated field or spruce forest), while the communities of Oribatida are essentially different. When compared to original spruce forest, the communities of both groups are different. Cultivation eliminates the populations of most microarthropod species, that have to disperse after reforestation from the surrounding areas. The aim of the experiment was to study the ambulatory dispersal of soil microarthropods. It was carried out in plastic boxes filled with an intact block…
Bacterial growth and biological properties of Cymbopogon schoenanthus and Ziziphus lotus are modulated by extraction conditions
2020
Abstract The present study aims to evaluate the antibacterial activity and biological properties of two traditional Saharian plants (Cymbopogon schoenanthus and Ziziphus lotus). The plant extracts were obtained by using a different combination of extraction methods (conventional vs. ultrasound-assisted) and solvents (water vs. ethanol:water (50:50, v/v)). The antioxidant profile, anti-inflammatory activity and impact on bacterial growth (foodborne and probiotic bacteria) of the obtained extracts were assessed. The plant species showed the hierarchically more important role in determining the biological properties of the extracts, followed by extraction solvent and extraction conditions. Con…
Staphylococcus aureus virulences faktoru un antibakteriālās rezistences noteikšana
2019
Staphylococcus aureus ir viena no izplatītākajām patogēnajām, gram pozitīvajām baktērijām, kas pateicoties tās virulences faktoriem, tādiem kā toksīniem, enzīmiem un struktūras komponentiem, spēj novājināt organisma imūno atbildi. Tādā veidā veicinot dažādu veselības traucējumu, it īpaši hospitālo infekciju un slimību attīstību. Mūsdienās, lielākoties visā pasaulē, it īpaši Dienvideiropā ir vērojama krasa MRSA izplatības palielināšanās, kas tiek nodrošināta pateicoties S. aureus sastāvā esošajam SCC mec u.c. ģenētiskajiem elementiem. Tādējādi panākot plaša spektra β-laktāma u.c. antibiotiku rezistences veidošanos, kas ar laiku var samazināt medikamentozās terapijas efektivitāti. Darba mērķi…
Origanum vulgare subsp. hirtum Essential Oil Prevented Biofilm formation and showed antibacterial activity against planktonic and sessile bacterial c…
2013
Essential oils from six different populations of Origanum vulgare subsp. hirtum were compared for their antibiofilm properties. The six essential oils (A to F) were characterized by a combination of gas chromatography with flame ionization detector and gas chromatography with mass spectrometer detector analyses. All oils showed weak activity against the planktonic form of a group of Staphylococcus aureus strains and against a Pseudomonas aeruginosa ATCC 15442 reference strain. The ability to inhibit biofilm formation was investigated at sub-MIC levels of 200, 100, and 50 m g/ml by staining sessile cells with safranin. Sample E showed the highest average effectiveness against all tested stra…