Search results for " ACIDO"
showing 10 items of 83 documents
Morphological determination of the phototrophic community composition of biological soil crusts in coastal sand dunes in northern Germany
2022
This dataset comprises the microbial community composition of biological soil crusts in north-German sand dunes. For this we obtained enrichment cultures of phototrophic microorganisms, by placing fragments of biocrusts of the same Petri dishes as used for sequencing, in Petri dishes with Bold Basal (1N BBM) agarized medium (Bischoff and Bold 1963). Cultures were grown under standard laboratory conditions: with a 12-hour alteration of light and dark phases and irradiation of 25 μmol photons m-2 s-1 at a temperature 20 ± 5 ºС. Microscopic study of these raw cultures began in the third week of cultivation. Morphological examinations were performed using Olympus BX53 light microscope with Noma…
Interstitielle Nephritis bei atypischer Manifestation eines Sj�gren's Syndrom
1980
A patient was observed with interstitial nephritis which resulted in renal tubular acidosis (distal type), tubular proteinuria and defective urinary concentrating ability in the absence of edema, elevated arterial blood pressure, glomerular proteinuria or abnormal urinary sediment. The presence of interstitial nephritis was established by renal biopsy which showed dense infiltrates in the interstitium, interstitial fibrosis and thickening and splitting of the pericapillary basal membranes. Immunofluorescence was non contributory. Extrarenal symptoms were discrete (arthralgia of both hands, Raynaud's syndrome upon cold exposure). Mixed connective tissue disease (MCTD) was suspected because o…
DEFECTIVE JEJUNAL BRUSH BORDER Na+/H+ EXCHANGE IN LETHAL FAMILIAN PROTRACTED DIARRHOEA
1989
The clinical spectrum of disease associated with the recently described defect in jejunal brush border membrane (BBM) Na+/H+ exchange remains poorly defined. We describe a further, lethal case of protracted diarrhoea in a child from a family in whom 2 previous siblings died of protracted diarrhoea at 2 and 11 months. The patient, a boy, was born at term weighing 2.9 kg and was admitted at 6d with profuse watery diarrhoea, severe dehydration and metabolic acidosis. Parenteral nutrition was started but the diarrhoea persisted, and he developed severe necrotising enterocolitis requiring an ileostomy. A high-output secretory diarrhoea persisted during nil by mouth (ileostomy fluid mmol/l: Na+ 1…
Die renale S�ure- und Ammonium-Ionen-Ausscheidung normaler und adrenalektomierter Ratten und ihre Beeinflussung durch Nebennierenrindenhormone
1959
The renal excretion of acid and ammonium ions after an oral load of monosodium-phosphate (1.2 mEq. per rat) was studied in groups of adrenalectomized er sham-operated rats, maintained on 0.9 per cent NaCI solution and water, on the 6th or 12th day after operation. Untreated groups were compared to groups receiving either Corticotropin (25 U./kg./day s.c.) or Cortisone acetate (12.5 mg./kg./day s.c.) er (7.5 mg./kg./day s.c.) or D,L-Aldosterone acetate Cortexone acetate (0.15 mg./kg./day s.c.) from the 3rd to the 12th day after opetarion. In sham-operated rats Cortisone increased H+ excretion and diuresis on the 6th day after operation (3rd day of treatment). This influence did not persist o…
pH-dependent hydrolysis of acetylcholine: Consequences for non-neuronal acetylcholine
2015
Acetylcholine is inactivated by acetylcholinesterase and butyrylcholinesterase and thereby its cellular signalling is stopped. One distinguishing difference between the neuronal and non-neuronal cholinergic system is the high expression level of the esterase activity within the former and a considerably lower level within the latter system. Thus, any situation which limits the activity of both esterases will affect the non-neuronal cholinergic system to a much greater extent than the neuronal one. Both esterases are pH-dependent with an optimum at pH above 7, whereas at pH values below 6 particularly the specific acetylcholinesterase is more or less inactive. Thus, acetylcholine is prevente…
Antagonisti degli effetti collaterali delle prostaglandine
2013
Valutazione dell'applicazione di edible coating sulla qualità dei frutti di fragola durante la frigoconservazione
2021
LA FOTOCATALISI ETEROGENEA UTILIZZATA COME METODO PER LE SINTESI ORGANICHE SELETTIVE IN CONDIZIONI SPERIMENTALI BLANDE
2014
Nel corso di questi tre anni di Dottorato di Ricerca in “Tecnologie per la Sostenibilità ed il Risanamento Ambientale”, XXIV ciclo, presso il laboratorio di ricerca di fotocatalisi eterogenea “Schiavello-Grillone”, sono stati sviluppati processi innovativi per la produzione selettiva di specie organiche ad alto valore aggiunto, seguendo i principi della Chimica Verde; in particolare sono state studiate reazioni di ossidazione parziale di composti aromatici. La metodologia prevalentemente utilizzata è stata la fotocatalisi eterogenea mediante l’utilizzo del biossido di Titanio policristallino (TiO2) come fotocatalizzatore, utilizzato sospeso in soluzione acquosa o immobilizzato su supporti r…
ATTIVITA’ FISICA LATTACIDA IN SOGGETTI AFFETTI DA SCLEROSI MULTIPLA: UN MODELLO DI ANALISI INTERDISCIPLINARE
La qualità della vita è considerata un prodotto derivante da benessere fisico, mentale e sociale e può ovviamente essere compromessa in soggetti affetti da sclerosi multipla (SM), malattia autoimmune cronica demielinizzante che può presentare disturbi abbastanza variegati. Oggetto della presente tesi di dottorato è stato quello di testare un modello di approccio interdisciplinare che possa migliorare la qualità della vita nei pazienti affetti da SM, attraverso la promozione dell'attività fisica, considerando i benefici indotti dalla stessa sullo stato di salute sia fisico che mentale dei pazienti affetti da questa patologia. Particolare attenzione è stata rivolta alla valutazione dei fattor…