Search results for "ether"
showing 10 items of 986 documents
Do negative life events promote gerotranscendence in the second half of life?
2014
Objectives: Gerotranscendence has been defined as a developmental shift in meta-perspective from a materialistic and pragmatic view to a more cosmic and transcendent view. Although gerotranscendence has been argued to increase with age and life experiences, the results have been mixed and based on cross-sectional studies. We use a longitudinal setting to investigate the role of negative life events, age, and gender on change in one dimension of gerotranscendence, cosmic transcendence. Method: 1569 individuals (ages 58-89) answered a questionnaire on cosmic transcendence in two cycles of the Longitudinal Aging Study Amsterdam in 1995-1996 (time 1) and 1998-1999 (time 2). Controlling for educ…
Reliability and Validity of the Tilburg Frailty Indicator in 5 European Countries
2020
OBJECTIVES: To assess the internal consistency, convergent and divergent validity, and concurrent validity of the Tilburg Frailty Indicator (TFI) within community-dwelling older people in Spain, Greece, Croatia, the Netherlands, and the United Kingdom.DESIGN: Cross-sectional study.SETTING: Primary care and community settings.PARTICIPANTS: In total, 2250 community-dwelling older people (60.3% women; mean age = 79.7 years; standard deviation = 5.7).METHODS: We assessed the reliability and validity of the full TFI as well as its physical, psychological, and social domains. Baseline data of the Urban Health Centers Europe project were used. The internal consistency was assessed with the Cronbac…
Possible links between intestinal permeablity and food processing: a potential therapeutic niche for glutamine
2010
Increased intestinal permeability is a likely cause of various pathologies, such as allergies and metabolic or even cardiovascular disturbances. Intestinal permeability is found in many severe clinical situations and in common disorders such as irritable bowel syndrome. In these conditions, substances that are normally unable to cross the epithelial barrier gain access to the systemic circulation. To illustrate the potential harmfulness of leaky gut, we present an argument based on examples linked to protein or lipid glycation induced by modern food processing. Increased intestinal permeability should be largely improved by dietary addition of compounds, such as glutamine or curcumin, which…
Stable, hydroxyl functional polycarbonates with glycerol side chains synthesized from CO(2) and isopropylidene(glyceryl glycidyl ether).
2012
A series of functional polycarbonates, poly((isopropylidene glyceryl glycidyl ether)-co-(glycidyl methyl ether) carbonate) (P((IGG-co-GME) C)) random copolymers with different fractions of 1,2-isopropylidene glyceryl glycidyl ether (IGG) units, is synthesized. After acidic hydrolysis of the acetal protecting groups, a new type of functional polycarbonate prepared directly from CO(2) and glycerol is obtained, namely poly((glyceryl glycerol)-co-(glycidyl methyl ether) carbonate) (P((GG-co-GME) C)). All hydroxyl functional samples exhibit monomodal molecular weight distributions with PDIs between 2.5 and 3.3 and M(n) between 12 000 and 25 000 g mol(-1) . Thermal properties reflect the amorphou…
A novel ether core lipid with H-shaped C80-isoprenoid hydrocarbon chain from the hyperthermophilic methanogen Methanothermus fervidus.
1998
Abstract A new ether lipid core (designated as FU) was found in Methanothermus fervidus total lipid. Comparison with caldarchaeol showed lower mobility of FU on TLC and smaller molecular weight (m/z 1298) by 2 mass units on FAB-MS. Treatment of FU with HI followed by displacement with silver acetate afforded long chain alcohol acetate (ROAc), which was further saponified with mild alkali to its free alcohol (ROH). ROH is the long chain alcohol prepared from FU. The molecular weights of ROAc and ROH were shown by MS to be 1354 and 1186, respectively. These results suggested that the molecular formula of ROH was C80H162O4, and ROH had four hydroxyl groups, and one molecule of ROH was bound wi…
Beyond Poly(ethylene glycol): Linear Polyglycerol as a Multifunctional Polyether for Biomedical and Pharmaceutical Applications
2014
Polyglycerols (sometimes also called "polyglycidols") represent a class of highly biocompatible and multihydroxy-functional polymers that may be considered as a multifunctional analogue of poly(ethylene glycol) (PEG). Various architectures based on a polyglycerol scaffold are feasible depending on the monomer employed. While polymerization of glycidol leads to hyperbranched polyglycerols, the precisely defined linear analogue is obtained by using suitably protected glycidol as a monomer, followed by removal of the protective group in a postpolymerization step. This review summarizes the properties and synthetic approaches toward linear polyglycerols (linPG), which are at present mainly base…
Extraction of glyphosate by a supported liquid membrane technique.
2000
The possible application of the supported liquid membrane (SLM) technique for the extraction of glyphosate is presented. For the extraction of this compound the SLM system has been applied with utilisation of Aliquat 336 as a cationic carrier incorporated into the membrane phase. The extraction efficiency of glyphosate [N-(phosphonomethyl)glycine] is dependent on the donor phase pH, carrier concentration in the organic phase and NaCl concentration in the acceptor phase. The optimal extraction conditions are: donor phase pH>11, acceptor phase of 2 M NaCl solution and the organic phase composed of 20% (w/w) Aliquot 336 solution in di-hexyl ether. Counter-coupled transport of chloride anions f…
Trends in government communication in The Netherlands
2008
PurposeThe purpose of this paper is to provide a current state of the art of government communication in The Netherlands which can help to promote a dialogue about how communication quality in this field can be improved further.Design/methodology/approachIn 2006 a survey was conducted for the second time to trace the communication trends in ministries, provinces, municipalities and water boards. The survey was set up in association with sector representatives and it is implemented every two years. The respondents were the top manager and the communication managers of all organisations in the four public sectors. The questionnaire was answered online and the response was 33 per cent.Findings…
Brominated flame retardants and organochlorines in the European environment using great tit eggs as a biomonitoring tool
2009
Large-scale studies are essential to assess the emission patterns and spatial distribution of organohalogenated pollutants (OHPs) in the environment. Bird eggs have several advantages compared to other environmental media which have previously been used to map the distribution of OHPs. In this study, large-scale geographical variation in the occurrence of OHPs, such as polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and organochlorine pesticides (OCPs), was investigated throughout Europe using eggs of a terrestrial residential passerine species, the great tit (Parus major). Great tit eggs from 22 sampling sites, involving urban, rural and remote areas, in 14 Europea…
Moraltheologische Probleme der pluralistischen Gesellschaft nach Amoris laetitia am Beispiel von Oberschlesien
2017
Posynodalna adhortacja apostolska o miłości w rodzinie Amoris laetitia jest owocem i inspiracją do pogłębionej refleksji na temat złożonych problemów życia małżeńskiego i rodzinnego. W teologii refleksja ta powinna być wierna tradycji Kościoła, ale zarazem mocno związana z rzeczywistością. Oznacza to jedność nauczania i działania w zakresie rozumienia współczesnych problemów małżeństwa i rodziny oraz poszukiwania konkretnych rozwiązań duszpasterskich w tym względzie, co nie przeszkadza różnorodności sposobów interpretacji pewnych aspektów nauczania lub niektórych wynikających z niego konsekwencji. Z racji różnorodności tradycji i wyzwań w poszczególnych krajach i regionach, papież Francisze…