Search results for "RED"
showing 10 items of 23890 documents
Rearrangement of N-(3-pyridyl)nitramine
2009
AbstractContrary to other N-(pyridyl)nitramines, the title compound cannot be rearranged to 3-amino-2-nitropyridine or other isomers. Hypothetical products of its transformation under influence of concentrated sulphuric acid, viz. 3-hydroxypyridine, 3,3′-azoxypyridine and 3,3′-azopyridine, were obtained from 3-nitro- and 3-aminopyridine in oxidation and reduction reactions. N-(3-Pyridyl)nitramine was prepared and rearranged in concentrated sulphuric acid. 3-Hydroxypyridine and 3,3′-azoxypyridine were isolated from the reaction mixture, other products were identified by the HPLC and GCMS methods. The results indicate that N-(3-pyridyl)hydroxylamine is an intermediate formed from N-(3-pyridyl…
Comparison of oxidoreductive enzyme activities in three coal tar creosote-contaminated soils
2019
This study used laboratory experiments to compare the effects of coal tar creosote on the activity of oxidoreductive enzymes in sandy loam, loamy sand and sandy clay loam soils. Different amounts of coal tar creosote were added to soil samples as follows: 0 (control), 2, 10 or 50 g kg–1 dry matter. The activity of soil dehydrogenases (DHAs), o-diphenol oxidase (o-DPO), catalase (CAT), nitrate reductase (NR) and peroxidases (POX) was determined. Contamination of soil with coal tar creosote affected oxidoreductase activity. Oxidoreductive enzyme activity following soil contamination with coal tar creosote was in the following order: DHAs > CAT > NR > POX > o-DPO in…
Vibrational Spectrum of HXeSH revisited : Combined computational and experimental study
2020
Vibrational spectrum of HXeSH embedded in low-temperature matrix is experimentally studied. To support the spectrum interpretation, anharmonic vibrational analysis is performed using different models and basis sets and the data is compared with previous experimental and theoretical analyses. Computations of overtones and combination modes allowed for new band assignments. The HXeSH molecule exhibits high anharmonicity similarly as other molecules from the noble-gas hydride family. Comparison of the employed computational methods shows once again that the modelling of the noble-gas compounds faces theoretical challenges to yield quantitatively reliable results. peerReviewed
Netiešās diskriminācijas risks cilvēku ar redzes traucējumiem nodarbinātībā
2017
Bakalaura darba “Netiešās diskriminācijas risks cilvēku ar redzes traucējumiem nodarbinātībā” mērķis ir izpētīt netiešās diskriminācijas risku cilvēku ar redzes traucējumiem nodarbinātībā. Pētījumā tika izmantota kvalitatīvā pētniecības metode. Datu analīzē izmantota kvalitatīvā kontentanalīze. Teorētiskais pamats veidots balstoties uz kritiskās invaliditātes teorijas sociālo modeli, riska - neaizsargātības teoriju un Gērija Bekera diskriminācijas modeli. Rezultāti norādīja uz netiešās diskriminācijas riskiem: attieksmes, sociālām attiecībām, darba vides iekārtojumu. Darba devēji apgalvo, ka ir gatavi piedāvāt vakanci cilvēkam ar redzes invaliditāti, savukārt nav gatavi pielāgot darba vidi …
Privātpersonu hipotekārās kreditēšana Latvijā
2016
Bakalaura darba tēma ir „Privātpersonu hipotekārā kreditēšana Latvija”. Hipotekārais kredīts ir viens no populārākiem kredītu veidiem, taču līdz ar krīzes iestāšanos hipotekāras kreditēšanas apjomi samazinājās un līdz šodienai nav sasniegusi pirms krīzes līmeni, tāpēc komercbankas sāka pielietot stingrāku kreditēšanas politiku. Bakalaura darba mērķis ir pamatojoties uz iegūto informāciju, izpētīt privātpersonu hipotekāro kreditēšanu Latvijā un to ietekmējošus faktorus, izstrādāt secinājumus un sniegt priekšlikumus hipotekārās kreditēšanas veicināšanai. Lai īstenotu šo mērķi ir izveidoti šādi uzdevumi: 1.Analizēt hipotekārās kreditēšanas teorētiskus un juridiskus aspektus; 2.Izvērtēt citu va…
Noise Reduction and Gap Filling of fAPAR Time Series Using an Adapted Local Regression Filter
2014
Time series of remotely sensed data are an important source of information for understanding land cover dynamics. In particular, the fraction of absorbed photosynthetic active radiation (fAPAR) is a key variable in the assessment of vegetation primary production over time. However, the fAPAR series derived from polar orbit satellites are not continuous and consistent in space and time. Filtering methods are thus required to fill in gaps and produce high-quality time series. This study proposes an adapted (iteratively reweighted) local regression filter (LOESS) and performs a benchmarking intercomparison with four popular and generally applicable smoothing methods: Double Logistic (DLOG), sm…
Consumo de alimentos funcionales: factores determinantes
2019
El concepto de alimento funcional nació en Japón en 1991, y desde entonces ha sido objeto de estudio debido al gran crecimiento de mercado que ha experimentado esta categoría de producto en las últimas décadas (Arai, Osawa, Ohigashi, Yoshikawa, Kaminogawa, Watanabe, . . . Nishino, 2001). En líneas generales, podemos definir que un alimento se considera funcional si se demuestra que ejerce un efecto beneficioso sobre una o más funciones selectivas del organismo, además de sus efectos nutritivos intrínsecos, de modo que mejore el estado de salud y bienestar, reduzca el riesgo de enfermedad, o ambas cosas (Diplock, Agget,Ashwell, Bornet, Fern y Roberfroid, 1999). Ahora bien, el consumidor s…
Multiscale Biomechanical Characterization of Ligaments and Tendons of the Human Knee
2020
Testing for a breakpoint in segmented regression: a pseudo score approach
2011
To overcome the well known oddities in testing for the existence of a breakpoint in segmented regression models, we discuss a novel approach based on the Pearson X2 statistic which can be understood as an approximation of the Score statistic. We describe the method and present results from some simulations.
Costrutti locativi e non locativi con mettere
2013
Sentence (a) Ada mise Pio nel sacco is ambiguous: one of its meanings is literal (Ada put Pio in the sack), whereas the other is figurative (Ada fooled / outsmarted Pio). Such ambiguity is not present in sentence (b) Ada mise Pio in un sacco. On the surface, (b) differs from (a) only insofar as the indefinite article is employed, but conveys a literal meaning exclusively (Ada put Pio in a sack). The ambiguity of sentence (a) is derived from the existence of two constructions employing mettere. The prepositional phrase of one of them displays standard paradigmatic properties and conveys literal (i.e. locative) meaning, whereas the other has no locative value and is highly constrained (e.g. n…