Search results for "FS"
showing 10 items of 1992 documents
Antimonin määrittämisestä
2008
Hydrophobin (HFBI): a potential fusion partner for one-step purification of recombinant proteins from insect cells
2008
Hydrophobins play an important role in binding and assembly of fungal surface structures as well as in medium-air interactions. These, hydrophobic properties provide interesting possibilities when purification of macromolecules is concerned. In aqueous micellar two-phase systems, based on surfactants, the water soluble hydrophobins are concentrated inside micellar structures and, thus, distributed to defined aqueous phases. This, one-step purification is attractive particularly when large-scale production of recombinant proteins is concerned. In the present study the hydrophobin HFBI of Trichoderma reesei was expressed as an N-terminal fusion with chicken avidin in baculovirus infected inse…
Ietekmes procesu analīze lietojot agregāciju funkcijas
2015
Bakalaura darbā ir aprakstīts indivīdu grupas lēmumu pieņemšanas modelis un analizēta citu indivīdu viedokļu ietekme uz viena indivīda izvēli. Lēmumu pieņemšana tiek modelēta kā iteratīvs process. Ir pieņemts, ka katrs indivīds savu lēmumu var mainīt, uzzinot citu indivīdu viedokļus. Ietekmju analīzei ir izmantoti agregāciju operatori, grafu teorijas elementi. Ir aprakstītas ietekmju koalīcijas un pētīta lēmumu pieņemšanas procesu konverģence.
Meaning in life in cancer patients: relationships with illness perception and global meaning changes
2017
BackgroundMeaning in life seems to play an important role at various stages of coping in cancer patients. It can influence the ways in which cancer patients perceive their illness and potential changes in beliefs and goals. The main aim of the current study is to examine how two dimensions – presence of and search for meaning – are related to illness perception and global meaning changes.Participants and procedureThe research was conducted among 231 cancer patients (136 women and 95 men), between 27 and 86 years of age (M = 56.73, SD = 12.64). They were diagnosed with gastrointestinal cancer (stomach, colon, pancreas, liver, large intestine). The following research methods were used: the Me…
Vulnerabilidad cognitiva a la hipocondría: intrusiones, valoraciones y creencias disfuncionales/ Cognitive vulnerability to hypochondriasis: intrusio…
2019
La hipocondría es un trastorno caracterizado por el miedo o la creencia de padecer una enfermedad grave a partir de la interpretación negativa de los signos y síntomas corporales. La confirmación por parte de un médico, después de una evaluación exhaustiva, de que el paciente no padece una enfermedad médica, no tiene como resultado una tranquilización segura y duradera. Por lo general, las personas que presentan hipocondría pueden experimentar una reducción de la ansiedad después de visitar al médico, pero esta reducción dura solo horas o días. Cuando se presenta otro síntoma, la ansiedad reaparece y el ciclo de preocupación hipocondríaca se reanuda. Además, la hipocondría se puede manifest…
La elección de los grados de Maestro/a: análisis de tendencias e incidencia del género y la titulación
2021
La elección de estudios universitarios es un proceso complejo en el que influyen diferentes variables. En este estudio se analizan los motivos de elección de carrera del alumnado de los Grados de Maestro/a en Educación Infantil y Educación Primaria de la Universitat de València en la última década, así como las posibles diferencias en los motivos a lo largo del tiempo y en función del Grado y del sexo. Utilizando como instrumento de recogida de información, un cuestionario adaptado de otra investigación en el contexto español, se analizan las motivaciones de un total de 769 estudiantes de estas titulaciones, recogidas en tres tiempos (cursos: 2010-2011, 2014-2015 y 2018-2019). Los resultado…
Cytochrome-P450 phosphorylation as a functional switch
2002
Xenobiotic metabolizing cytochromes P450 (CYP) were shown to be phosphorylated in vitro (using purified protein kinases together with purified CYPs), in intact cells (in V79 cells after transfection of cDNAs coding for individual CYPs, in diagnostic mutants, in hepatocytes), and in whole organisms (rats). CYP phosphorylation is highly isoenzyme selective in that only some CYPs are phosphorylated. Protein kinase A (PKA) was identified as a major catalyst for the phosphorylation of CYPs. The PKA recognition motif Arg-Arg-X-Ser is present in several members of the CYP2 family, but is used by only some of them, most notably by CYP2B1/2B2 and CYP2E1. For CYP2B1 it was shown that a substantial po…
Sorption of uranium(VI) onto ferric oxides in sulfate-rich acid waters.
2003
The mechanisms of the uranium(VI) sorption on schwertmannite and goethite in acid sulfate-rich solutions were studied by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy. The samples were prepared under N2 atmosphere and initial uranium(VI) concentrations of 1 x 10(-5) (pH 6.5) to 5 x 10(-5) M (pH 4.2). The ionic strength was adjusted using 0.01 M Na2SO4 or 0.01 M NaClO4, respectively. The EXAFS structural parameters for uranium(VI) sorbed on goethite in sulfate-rich, acid and near-neutral solutions indicate that uranium(VI) forms an inner-sphere, mononuclear, bidentate surface complex. This complex is characterized by a uranium-ferric-iron distance of approximately 3.45 A. Ura…
Structural Characterization of Surfactant-Coated Bimetallic Cobalt/Nickel Nanoclusters by XPS, EXAFS, WAXS, and SAXS
2011
Cobalt nickel bimetallic nanoparticles were synthesized by changing the sequence of the chemical reduction of Co(II) and Ni(II) ions confined in the core of bis(2-ethylhexyl)phosphate (2)., and Ni(DEHP)(2). The reduction was carried out by mixing, sequentially or contemporaneously, fixed amounts of n-heptane solution of Co(DEHP)2 and Ni(DEHP)2 micelles with a solution of sodium borohydride in ethanol at a fixed (reductant)/(total metal) molar ratio. This procedure involves the rapid formation of surfactant-coated nanoparticles, indicated as Co/Ni (Co after Ni), Ni/Co (Ni after Co), and Co + Ni (simultaneous), followed by their slow separation as nanostructures embedded in a sodium bis(2-eth…
Study of the role of sulfur functionalities in humic acids for uranium(VI) complexation
2009
Humic substances influence the speciation and migration behavior of toxic and radiotoxic metal ions, such as actinides, in the environment. Depending on their origin, humic substances contain different amounts of sulfur ranging from 0.1 to 3.6% and 0.5 to 1.43% in soil and aquatic humic substances, respectively [1]. Reduced, intermediately oxidized and highly oxidized sulfur functionalities occur in humic substances [1]. Although sulfur functionalities occur in small concentrations, they can play an important role in the complexation of selected metal ions. Knowledge about the impact of sulfur functionalities on the metal ion complexation by humic substances and their significance compared …