Search results for "forme"
showing 10 items of 1192 documents
Organometallic complexes with biological molecues, part 3.in vivo cytotoxicity of diorganotin (IV) chloro and triorganotin (IV) chloro derivatives of…
1994
In order to obtain a continuous source of mitotic metaphases, gill tissue of Aphaius fasciatus (Pisces, Cyprinodontiformes) has been successfully employed. Results gathered after exposure of fish to R2SnClpenG, R3SnClpenGNa, to the parents R2SnCl2, R3SnCl and to penGNa (penGNa = penicillinGNa; R = methyl, butyl and phenyl) suggest that both the parent organotin (IV) chloride and organotin (IV) chloropenG derivatives are toxic while penGNa exerts no significant toxic activity. Essentially, all of the chromosome abnormalities are classifiable as irregularly staining of chromosomes, breakages, side-arm bridges or pseudochiasmata.
Molecular and Morphological Differentiation of Two Similar Species of Accacoeliidae (Digenea):Accacladocoelium macrocotyleandA. nigroflavumfrom Sunfi…
2014
In a study of 106 sunfish, Mola mola (L.), from Mediterranean waters, 2,731 worms, belonging to 2 congeneric species of accacoeliids, Accacladocoelium macrocotyle (Diesing, 1858) Robinson, 1934 and Accacladocoelium nigroflavum (Rudolphi, 1819) Robinson, 1934 , were collected from the digestive system. It is often difficult to differentiate between these 2 species as they are sympatric and very similar; in fact, according to previous descriptions, the extent of the vitellarium is the only interspecific difference, described as extending posteriorly to the ovary in A. macrocotyle and as anterior to the anterior testis in A. nigroflavum. However, this diagnostic trait is not always valid; more…
A lossless current sensing technique for flyback converters
2009
Regardless of the feedback control, almost all converters require input or output current sense for overcurrent protection. If a current mode control is implemented, high accuracy is also required. The optimal current sensing method shows the highest accuracy and the lowest power dissipation. In this paper, a lossless and accurate current sensing technique for Flyback converters is proposed. An RC network is parallel connected with the primary MOSFET and the voltage signal across the sense capacitor accurately reproduces the magnetizing current waveform. The RC technique benefits from all the advantages of the most common current sensing techniques currently applied to Flyback converters, a…
Vecāku kompetences pilnveide par nepieciešamo atbalstu bērniem ar garīgās attīstības traucējumiem
2020
Diplomdarba tēma: Vecāku kompetences pilnveide par nepieciešamo atbalstu bērniem ar garīgās attīstības traucējumiem. Autore: Ilze Pavlovska Vadītāja: doc., dr. paed. Ilze Šūmane Pētījuma mērķis ir pētīt vecāku informētībās kā kompetences daļu par mācīšanas grūtībām sākumskolā bērniem ar garīgās attīstības traucējumiem un izstrādāt priekšlikumus tās pilnveidei. Pirmā nodaļa veltīta vispārīgam garīgo traucējumu raksturojumam, balstoties uz tādiem avotiem, kā S.Liepiľa, S.Tūbele, A.Šteinberga, E.Landrate,I.Freimanis,valsts izglītības satura centra izstrādātie metodiskie materiāli. Otrajā nodaļā analizētas teorētiskās nostādnes par bērnu ar SV audzināšanu ģimenē. Grūtības, kuras pārdzīvo vecāki…
Le ricerche di Aldo Visalberghi in campo didattico
2021
Il capitolo presenta gli interessi principali di studio e di ricerca di Aldo Visalberghi, preceduti da una breve parentesi biografica: delinea alcuni aspetti del pensiero di John Dewey quali fonti di ispirazione del pedagogista triestino; descrive la pedagogia esperienziale come sapere didattico-educativo da lui sostenuto; sintetizza il suo interesse per la valutazione nel processo educativo; descrive le variabili del condizionamento sociale nell’educazione scolastica da lui individuate; rileva la dimensione formativa della ricerca da lui valorizzata; evidenzia il valore sociale che Visalberghi attribuiva all’insegnamento e all’apprendimento; sottolinea il carattere ludiforme che egli asseg…
L'abastiment municipal de cereals i carns a la vila d'Alzira i el seu terme (1370-1415): una contribució a l'estudi de les relacions ciutat-camp a la…
2017
L’abastiment municipal de cereals i carns a la vila d’Alzira i el seu terme (1370-1415): una contribució a l’estudi de les relacions ciutat-camp a la Ribera del Xúquer Salvador Vercher Lletí L’abastiment alimentari de les ciutats medievals és un tema que, en l’àmbit de la Mediterrània occidental, compta amb una certa tradició historiogràfica i una literatura que podem qualificar d’extensa, però presenta diverses asimetries en l’àmbit de la Corona d’Aragó. Primer de tot, perquè els nuclis estudiats fins ara corresponen a grans ciutats i, només excepcionalment, a viles-mercat de diferent rang. I en darrer lloc, i no pas menys important, perquè les recerques dutes a terme s’han centrat de mane…
Moss cell cultures as sources of arachidonic and eicosapentaenoic acids
1986
AbstractLipid classes from tissue cultures of the moss Leptobryum pyriforme (Hedw.) Wils. were analyzed. In the total lipid fraction, this species contained 20% arachidonic acid and about 7% eicosapentaenoic acid. The distribution of these fatty acids showed a preference for the phospholipid fraction. In particular, the phosphatidylethanolamine fraction was enriched in arachidonic acid. The arachidonic acid content of Leptobryum could be altered by transferring the cultures to different culture conditions. Mosses show high organic mass production in tissue cultures in relatively simple media. The great potential of using mosses as sources for the production of polyunsaturated fatty acids is…
Bell Beakers in the southeast of France. From Archaeology to History of the third millenium BC
2002
The term "Bell Beaker", in the strict sense, designates a ceramic beaker form with an S-shaped profile that gives it the shape of an inverted bell. This type of drinking-vessel is characterized by both its very particular pattern of decoration and by the generally skilled execution of that decoration. By extension, the decoration characteristic of these beakers bas allowed the expansion of the category "Bell-Beaker" to include other pottery forms and even other types of decoration showing the same tradition, vvhich probably represent an evolution or reproduction of the original Bell Beaker pattern, The recognition of these objects and their definition as a class date to the nineteenth centu…
Palermo
2015
“Immagini di territori metropolitani” rappresenta una raccolta che anticipa una riflessione più organica e interpretativa sulle 14 Città metropolitane italiane. Palermo è una di queste e il testo mette in evidenza l'intero e complesso processo che ha portato all'attuale asseto amministrativo del territorio metropolitano.
La información clínica en Patología Digestiva. Estudio comparativo en tres centros hospitalarios: Variabilidad en la asignación de Grupos Relacionado…
2015
El análisis d la especialidad de Medicina Digestiva en su vertiente asistencial tiene una importante trascendencia para determinar las necesidades que de ella se derivan en el medio sanitario actual. Para la cuantificación del Producto Hospitalario disponemos del Case Mix o Casuística. Medir la producción de los servicios sanitarios es difícil, pues existen tantos productos como pacientes. Disponemos de la clasificación de pacientes. Los Grupos Relacionados por el Diagnóstico (GRD) es el sistema de clasificación de pacientes utilizado para medir el producto hospitalario y poder comparar centros sanitarios. El punto de partida para medir la información del episodio hospitalario está reflejad…