Search results for "Cane"
showing 10 items of 489 documents
New perspectives on diastereoselective determination of hexabromocyclododecane traces in fish by ultra high performance liquid chromatography-high re…
2014
a b s t r a c t A new analytical method is presented for diastereoisomer-specific identification and quantitation of hexabromocyclododecanes (HBCD) in fish samples. The method is based on extraction of the target analytes from samples with a mixture of organic solvents, with further three-stage clean-up includ- ing destructive removal of matrix components with sulphuric acid and acid-impregnated silica gel, and Florisil adsorption column chromatography. Ultra high performance liquid chromatography (UPLC) cou- pled with high resolution (HR) Orbitrap mass spectrometry featuring heated electrospray ionization (HESI-II) interface operated in negative ion mode was employed for the identification…
Das kompositorische Verfahren in Jean Moutons Quadrupelkanon Nesciens mater virgo virum
2012
Anhand der kompositorischen Probleme, die sich bei der Konzeption mehr als zweistimmiger Kanons ergeben, wird der Frage nachgegangen, wie der konkrete Kompositionsprozess um 1500 ausgesehen haben konnte. Eine Analyse von Jean Moutons Motette Nesciens mater zeigt, dass die Wechselwirkungen zwischen Kanonkonzeption, Klangfolge und melodischer Gestaltung eine simultane Kompositionsweise voraussetzen, in der die Klangfolge wechselnde Verhaltnisbestimmungen als Resultat und Voraussetzung der kontrapunktischen Konfiguration erfahrt: Der Wechsel von der Sukzessiv- zur Simultankonzeption erscheint in Bezug auf komplexe Kanonbildungen als ein verfahrenstechnisches Erfordernis.
Mechanical and acoustical behavior of sugarcane and flax fibres reinforced biocomposite
2017
For reasons of comfort, modern constructions require acoustic and thermal insulating materials, offering good mechanical performances. In this context, the valorization of plant fibres from the agro-food industry presents economic and environmental benefits. Thus, the aim of the present study is to develop a multifunctional sugarcane fibres reinforced epoxy porous composite combining good acoustic and mechanical properties.The study of the bagasse fibres geometry has shown that fibres’ length and diameter distribution can be fitted by lognormal laws. Composites manufactured by thermocompression process with an epoxy matrix were characterized using an experimental design whose parameters wer…
Catalytic and anticancer activities of sawhorse-type diruthenium tetracarbonyl complexes derived from fluorinated fatty acids
2013
The reaction of fluorinated fatty acids, perfluorobutyric acid (C3F7CO2H), and perfluorododecanoic acid (C11F23CO2H), with dodecacarbonyltriruthenium (Ru3(CO)12) under reflux in tetrahydrofuran, followed by addition of two-electron donors (L) such as pyridine, 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane, or triphenylphosphine, gives stable diruthenium complexes Ru2(CO)4(μ2-η2-O2CC3F7)2(L)2 (1a, L = C5H5N; 1b, L = PTA; 1c, L = PPh3) and Ru2(CO)4(μ2-η2-O2CC11F23)2(L)2 (2a, L = C5H5N; 2b, L = PTA; 2c, L = PPh3). The catalytic activity of the complexes for hydrogenation of styrene under supercritical carbon dioxide has been assessed and compared to the analogous triphenylphosphine complexes w…
Comparison of endoscopic and open resection for Haglund tuberosity in a cadaver study.
2006
Background: About half of patients who have Haglund disease may require treatment by surgical resection of the superior portion of the calcaneal tuberosity. Endoscopic techniques have been described as alternatives to open surgery, but only results of uncontrolled retrospective clinical investigations have been reported. Up to now no research is available which compares these different procedures. Methods: A controlled laboratory study was done to evaluate the morphologic appearance of the superior portion of the calcaneal tuberosity after endoscopic or open resection. The tuberosity was resected in 15 isolated fresh-frozen human cadaver lower limb specimens with either open (nine) or endos…
Thanksgiving Day: un mito problematico
2009
Novel Ni(II) Mixed Ligand Complex Modified Electrode: Catalytic Effect on Anodic Oxidation of Phenol
2004
Cyclic voltammetry, using graphite paste electrode (GPE) and chemically modified GPE with Ni(II) mixed ligand complex (MGPE), is described for sensing and detoxification of phenol. A novel mixed ligand complex of nickel with 1,4,8,11-tetraaza cyclotetradecane (cyclam) and thiocyanate in the molar ratio of 1 : 2 : 5 is synthesized and characterized by spectroscopic and electrochemical studies. The Ni(II)-cyclam-thiocyanate complex behaves as a fast electron-transfer mediator, as nickel ions exist in higher oxidation state of Ni(III) on applying a potential of 1.25 V (vs. Ag/AgCl), which catalyses the oxidation of the target species. The mixed ligand complex, when incorporated in the graphite…
Bone mineral density and physical activity in 50–60-year-old women
1991
Abstract The bone mineral density (BMD) of the calcaneus was measured utilizing a single energy photon absorption method in 108 women, aged 50–60 years. The women who participated in vigorous exercise two or more times a week or whose total physical activity amounted to 4 h a week had significantly higher BMD values than those who exercised less than two times a week or did less than 4 h physical activity a week. The physically active women also showed higher values for leg extension force and maximal oxygen uptake. BMD and leg extension force were positively correlated, whereas correlations between BMD and body mass, and the width of the calcaneus were negative. When other life-style varia…
El periodismo sefardí ante su público
2012
El presente trabajo tiene como objeto de estudio la prensa periódica sefardí, que apareció a mediados del s. XIX en los territorios del antiguo Imperio Otomano y se extendió hasta la llegada de la II Guerra Mundial.La prensa periódica, que a mediados del s. XIX ya contaba con una consolidada tradición en Occidente, fue un género literario que los sefardíes otomanos adoptaron de la vecina Europa. Si bien su práctica no fue muy intensa en los primeros años, desde las últimas décadas del s. XIX y, especialmente, a partir de 1908 (fecha de la Revolución de los Jóvenes Turcos), el periodismo sefardí alcanzó una elevada productividad. El motivo fue el fin de la censura del sultán Abdul Hamid II, …
The Wapshot Chronicle, John Cheever (1957)
2021
This essay analyzes John Cheever's's novel "The Wapshot Chronicle" (1957) its critical reception from presentation to the present day,the historical context of its production and reception and its enduring significance.