Search results for "26"
showing 10 items of 3194 documents
Incorporation of dynamic boronate links and Ag nanoparticles into PVA hydrogels for pH-Regulated and prolonged release of methotrexate
2021
Abstract In this study, pH-responsive hydrogels based on PVA-boronate crosslinks were prepared via a simple route and used for controlled and targeted delivery of anticancer drug methotrexate. A double network (DN) hydrogel composed of didiol-boronate/PVA complex as the first network and PVA crystallites generated by a freeze-thaw process as the second one was developed. The swelling of PVA-boronate DN hydrogels demonstrated high sensitivity to multiple stimuli including the pH, temperature, and ionic strength of the media thanks to the dynamic boronate links in the first network. Moreover, unlike previously reported hydrogels based on the boronate linkages, the new DN hydrogels preserved t…
Pressure-Induced Deformation of Pillar-Type Profiled Membranes and Its Effects on Flow and Mass Transfer
2019
In electro-membrane processes, a pressure difference may arise between solutions flowing in alternate channels. This transmembrane pressure (TMP) causes a deformation of the membranes and of the fluid compartments. This, in turn, affects pressure losses and mass transfer rates with respect to undeformed conditions and may result in uneven flow rate and mass flux distributions. These phenomena were analyzed here for round pillar-type profiled membranes by integrated mechanical and fluid dynamics simulations. The analysis involved three steps: (1) A conservatively large value of TMP was imposed, and mechanical simulations were performed to identify the geometry with the minimum pillar density…
A hierarchical model for novel schemes of electrodialysis desalination
2019
Abstract A new hierarchical model for the electrodialysis (ED) process is presented. The model has been implemented into gPROMs Modelbuilder (PSE), allowing the development of a distributed-parameters simulation tool that combines the effectiveness of a semi-empirical modelling approach to the flexibility of a layered arrangement of modelling scales. Thanks to its structure, the tool makes possible the simulation of many different and complex layouts, requiring only membrane properties as input parameters (e.g. membrane resistance or salt and water permeability). The model has been validated against original experimental data obtained from a lab scale ED test rig. Simulation results concern…
Tiešsaistes integrētas izstrādes vides salīdzināšana ar lokālām integrētām izstrādes vidēm JAVA programmēšanas valodai
2020
Bakalaura darba ietvaros tika izpētītas, salīdzinātas un aprakstītas divas integrētas izstrādes vides priekš Java programmēšanas valodas: tiešsaistes un lokāla. Teorētiskajā daļā tiek aprakstīta Java programmēšanas valoda un integrētas izstrādes vides funkcijas, priekšrocības un trūkumi. Darbā tiek apskatītas vairākas integrētas izstrādes vides un izvēlētas divas: viena tiešsaistes un viena lokāla. Tālāk, balsoties uz standartu ISO 9126-1: 2001, autors izveido kvalitātes modeli, lai salīdzinātu vairākas integrētas izstrādes vides. Praktiskajā daļā tiek salīdzinātas tiešsaistes un lokāla integrēta izstrādes vide pēc autora izveidota kvalitātes modeļa.
Analysis and description of an open source janitor project
2006
Masteroppgave i informasjons- og kommunikasjonsteknologi 2006 - Høgskolen i Agder, Grimstad The objective of this study is to describe the inside and impact of the Linux Kernel Janitor Project. To describe and discuss how such janitor activity can be useful for others is also an objective. The Linux Kernel Janitor Project is a project defined to perform maintenance of the Linux kernel source, often taking on tasks that nobody else will be doing. The patches produced by the janitors have been analysed and some of the effects and properties of the work the project has carried out are described. Analysis show that janitor activity reduces the amount of code while still keeping the same functio…
LEGAL CONSIDERATIONS REGARDING THE INTRODUCTION AND IMPLEMENT OF THE PROPOSED `FINANCIAL TRANSACTION TAX` ON PENSION FUNDS. IMPACT ON TRANSACTION COS…
2012
In economies in which pension obligations are substantial, it is important that there is a high degree of trust in the financial reporting of pensions by employers and by pension plans. The objective of this paper is to assess legal considerations regarding the introduction and implement of financial transaction tax mechanisms in private pension system. In line with this objective, an understanding of causes, implications, solutions for pensions is essential to being able to efficiently and effectively create a secure fiscal environment.
Molecular Cytogenetic Characterization of the Sicilian Endemic Pond Turtle Emys trinacris and the Yellow-Bellied Slider Trachemys scripta scripta (Te…
2020
Turtles, a speciose group consisting of more than 300 species, demonstrate karyotypes with diploid chromosome numbers ranging from 2n = 26 to 2n = 68. However, cytogenetic analyses have been conducted only to 1/3rd of the turtle species, often limited to conventional staining methods. In order to expand our knowledge of the karyotype evolution in turtles, we examined the topology of the (TTAGGG)n telomeric repeats and the rDNA loci by fluorescence in situ hybridization (FISH) on the karyotypes of two emydids: the Sicilian pond turtle, Emys trinacris, and the yellow-bellied slider, Trachemys scripta scripta (family Emydidae). Furthermore, AT-rich and GC-rich chromosome regions were detected …
Survival by colon cancer stage and screening interval in Lynch syndrome:a prospective Lynch syndrome database report
2019
Abstract Background We previously reported that in pathogenic mismatch repair (path_MMR) variant carriers, the incidence of colorectal cancer (CRC) was not reduced when colonoscopy was undertaken more frequently than once every 3 years, and that CRC stage and interval since last colonoscopy were not correlated. Methods The Prospective Lynch Syndrome Database (PLSD) that records outcomes of surveillance was examined to determine survival after colon cancer in relation to the time since previous colonoscopy and pathological stage. Only path_MMR variants scored by the InSiGHT variant database as class 4 or 5 (clinically actionable) were included in the analysis. Results Ninety-nine path_MMR ca…
Koulutuksen ja työelämän yhteistyö - pedagogisia näkökulmia
2000
Tiedon oppiminen ja tiedon käyttäminen eivät ole erillisiä, vaan yhtä ja samaa prosessia. Oppiminen on tilannesidonnaista ja sitä tapahtuu työssä ja työn kautta osallistumalla aitoihin toimintakäytäntöihin. Nykyisin suositellaankin sellaisia pedagogisia järjestelyjä, joissa opiskelijat kohtaavat todellisen elämän ongelmat jo opiskelun alkuvaiheissa ja opiskelevat teoriaa kytkettynä näihin aitoihin arkielämän tilanteisiin.
Labor-Market Returns to Higher Vocational Schooling
2018
This paper examines the labor-market returns to a new form of postsecondary vocational education, vocational master's degrees. We use individual fixed effects models on the matched sample of students and non-students from Finland to capture any time-invariant differences across individuals. Attendance in vocational master's programs leads to higher earnings of eight percent five years after entry even if selection on unobservables is twice as strong as selection on observables. Earnings gains are similar by gender and age, but they are marginally higher for health than for business or technology and trades. nonPeerReviewed