Search results for "Palm"
showing 10 items of 338 documents
Why Do French Universities Perform so Poorly in International League Tables ?
2004
International audience
Mūsdienīgs skats uz palmu eļļas ietekmi uz cilvēka organismu un veselību
2021
Palmu eļļa ir viena no vislētākajām un populārākajām eļļām visā pasaulē. Tajā pašā laikā ir daudz diskusiju par palmu eļļas ietekmi uz cilvēka veselību, zinātniekiem ir pamats uzskatīt, ka palmu eļļa palielina dažu slimību risku. Tēmas aktualitāti nosaka palmu eļļas ļoti plašā izmantošana pārtikā un uztura bagātinātajos, kas visvairāk var ietekmēt cilvēka veselību, vienlaikus kļūstot par iespējamu riska faktoru. Tāpēc pētījuma mērķis ir veikt aptauju Latvijas iedzīvotāju vidū, noskaidrot viņu viedokli un izpratni uz palmu eļļas ietekmi uz organismu. Rezultāti liecina, ka aptaujātajiem ir grūti atbildēt par savu attieksmi pret palmu eļļas klātbūtni pārtikas produktos un uztura bagātinātājos,…
What’s the resolutive surgery for Pseudo-Ainhum in vohwinkel syndrome? A case report and review of the literature
2021
Vohwinkel Syndrome, also known as Keratoderma Hereditarium Mutilans, is an extremely rare dominant autosomal keratosis. It typically presents with “starfish” keratoses on the knuckles, palmoplantar keratoderma (PPK), hearing impairment and mutilating digital constriction bands (pseudoainhum) that cause strangulation, often leading to autoamputation of the affected digit. Both medical and surgical treatment haven’t shown to date consistent results, in the treatment of pseudoainhum. In this study we present the case of a woman with Vohwinkel syndrome who showed constriction bands causing ischemic changes of the 5th digit of the right hand for which she was treated with surgery. We also presen…
Contribution of vitamin A to the oxidation resistance of human low density lipoproteins.
1995
This study investigated the antioxidant contribution of vitamin A in protecting human low density lipoprotein (LDL) against copper-stimulated oxidation. The presence of small amounts of retinol (0.033 ± 0.012 nmol/mol LDL) and retinyl palmitate (0.036 ± 0.021 nmol/mol LDL) was routinely ascertained in the LDL. A single oral supplementation with 20,000 IU vitamin A caused a two- to three-fold increase of retinol and retinyl palmitate in the LDL isolated 8 h after the supplementation. In comparison to autologous-control LDL, vitamin A-enriched LDL were more resistant to oxidation, as expressed both by a clear delay in the onset of lipid peroxidation and by a reduction of the rate of conjugate…
Antioxidant Activity of Vitamin A within Lipid Environments
1998
New information about deleterious effects of free radicals on cell compartments, and a growing amount of associations between free radicals and various pathological conditions, have produced considerable interest in the biological defense systems against oxidative injury. The antioxidant properties of vitamin A, known for decades (Monaghan and Schmitt, 1932), have been reinvestigated in recent years in chemical as well as in biological systems. Its lipid nature and the localization within the lipophilic compartment of membranes and lipoproteins make vitamin A effective in reducing lipid peroxidation by acting as a chain-breaking antioxidant.
A time-course investigation of vitamin A levels and drug metabolizing enzyme activities in rats following a single treatment with prototypic polychlo…
1987
Xenobiotics previously characterized as selective inducers of drug-metabolizing enzymes were chosen to probe possible relationships between enzyme induction and vitamin A metabolism. Liver, kidney and serum retinol and retinyl palmitate levels were investigated in male Sprague--Dawley rats receiving a single i.p. injection of the polychlorinated biphenyls (PCBs), 2,2',5,5'-tetrachlorobiphenyl, 3,3',4,4'-tetrachlorobiphenyl or 2,2',4,4',5,5'-hexachlorobiphenyl (300 mumol/kg) or 1,1,1-trichloro-2,2-bis-(4-chlorophenyl)-ethane (DDT) (150 mumol/kg). While 2,2',5,5'-tetrachlorobiphenyl, a weak or non-inducer, and 2,2',4,4',5,5'-hexaclorobiphenyl and DDT, phenobarbital-type inducers of cytochrome…
Effect of a physical pre-treatment and drying on carotenoids of goji berries ( Lycium barbarum L.)
2018
In order to evaluate the influence of an abrasive pre-treatment and drying at 50 °C, 60 °C, 70 °C of goji fruits (Lycium barbarum L.), changes in colour and carotenoids were studied. An extraction method was modified and adapted to assay the main carotenoid esters and saponified carotenoids of goji berries, before and after treatments. Goji berries were confirmed as a high source of zeaxanthin, with zeaxanthin-dipalmitate at about 2 g/kg dry weight. The reliability of the analytical method was confirmed by the high quantitative recoveries, about 100%, a higher repeatability than reference methods and a good reproducibility (lower than 5%). After drying, significant but small carotenoid loss…
Stratégies de lutte contre le charançon rouge du palmier
2018
La communauté scientifique internationale (source : publication FAO d’avril 2017) s’accorde sur l’importance de la combinaison des mesures de lutte en fonction des niveaux d’infestation par le charançon rouge du palmier. Plusieurs mesures de lutte sont disponibles ou envisageables : assainissement mécanique, application d’insecticides à titre préventif ou curatif, piégeage de masse et biocontrôle (lutte biologique sensu stricto). Il est à noter que plusieurs expérimentations sur le biocontrôle sont en cours.Dans la perspective d’améliorer les stratégies de lutte contre le charançon rouge du palmier, il est demandé : 1) d’identifier les stratégies de lutte (en tant que combinaison de différe…
Present Uncertainty and Looking to the Past: The Ambiguous Literary Nationalism of Putnam’s Monthly
2023
Putnam’s Monthly (1853-1857) was one of the best literary and general interest magazines in antebellum America. Besides its high quality, what made the New York-based magazine stand out was its commitment to publishing American writers and focusing on American themes at a time when, with no reliable international copyright protection in place, many periodicals in the United States were in the habit of reprinting the works of foreign (primarily British) authors, sometimes without payment. However, despite its optimistic literary nationalism, Putnam’s Monthly expressed uncertainty about the quality of contemporary American literature and, indeed, about the capacity of American society to enco…