Search results for " Pt"

Female-female aggression and female mate choice on black grouse leks.

2000

We studied female-female aggression in relation to female mate choice in black grouse, Tetrao tetrix, in central Finland, in 1994-1998. Aggression occurred on average every other minute when there was more than one female on a territory, and aggressive behaviour was most prominent when several females attended the lek. Interactions tended to be proportionally most frequent on the territories of the highest-ranking males, although not significantly so. Females that were chased by other females did not mate with lower-ranking males than their aggressors did. Furthermore, chased females were only rarely (6% of cases) forced to move off the territory by agonistic interactions and copulations we…

Volatile constituents of aerial parts of three endemicCentaureaspecies from Turkey:Centaurea amanicolaHub.-Mor.,CentaureaconsanguineaDC. andCentaurea…

2008

The volatile constituents of the aerial parts of Centaurea amanicola Hub.-Mor., Centaurea consanguinea DC. and Centaurea ptosimopappa Hayek were extracted by hydrodistillation and analysed by GC and GC–MS. Altogether 94 components were identified. Sesquiterpenoids, fatty acids and carbonylic compounds were the most abundant components in the oils. Hexadecanoic acid and (Z,Z )-9,12-octadecadienoic acid were the main fatty acids in all the examined samples, that showed different patterns of composition. The study on the biological activity of the oils showed an action mainly against the Gram-positive pathogens.

PTHrP [38-94] is a survival- and growth-promoting factor for non-tumoral breast epithelial cells.

2005

Espressione cadmio-dipendente di AEG-1, c-fos e c-jun in cellule tumorali mammarie umane

2007

Rip-1 regulation of caspase expression in PTHrP [38-94]-treated MDA-MB231 breast cancer cells

2004

Rip-1 controlla l’espressione delle caspasi in cellule MDA-MB231 trattate con PTHrP[38-94]-amide

2004

Sintesi, caratterizzazione e studio dell'attività biologica di nuovi complessi mononucleari di PT(II) con leganti eterociclici

2008

Sono stati precedentemente sintetizzati complessi mono- e polinucleari di Pt(II) [1, 2] che hanno mostrato attività citotossica maggiore del cisplatino. Tre nuovi complessi mononucleari di Pt(II) analoghi del cisplatino sono stati quindi in seguito preparati usando leganti eterociclici quali: 5,6-difenil-3-(2-piridil)-1,2,4-triazina-4’,4’’-disulfonato sodico (dptdn), 5,6-difenil-3-(2-piridil)-1,2,4-triazina (dpt) e 2,6-bis(2-benzimidazolil)piridina (bbp). I risultanti tre complessi [PtCl(bbp)]Cl (1), [PtCl2(dptdn)](H2O) (2) e [(dptdn)(dpt)Pt]Cl2(H2O) (3), ionici (1) e (3) e neutro (2), sono stati sintetizzati e strutturalmente caratterizzati tramite spettroscopia IR e NMR 1D e 2D 1H e 13C. …

Andamento nel tempo dell’approccio alla coronarografia diagnostica in relazione ai progressi della PTCA

2001

Polytetrafluoroethylene Films in Rigid Polyurethane Foams' Dielectric Permittivity Measurements with a One-Side Access Capacitive Sensor.

2021

As a non-metallic composite material, widely applied in industry, rigid polyurethane (PUR) foams require knowledge of their dielectric properties. In experimental determination of PUR foams’ dielectric properties protection of one-side capacitive sensor’s active area from adverse effects caused by the PUR foams’ test objects has to be ensured. In the given study, the impact of polytetrafluoroethylene (PTFE) films, thickness 0.20 mm and 0.04 mm, in covering or simulated coating the active area of one-side access capacitive sensor’ electrodes on the experimentally determined true dielectric permittivity spectra of rigid PUR foams is estimated. Penetration depth of the low frequency excitation…

Complessi di Platinum(II): sintesi, studi di DNA-binding e loro attività antitumorale in vitro

2013

Con lo scopo di trovare nuovi analoghi del Cis-DDP (cis-diammino dicloro platino(II)) nuovi complessi del platino sono stati sintetizzati, caratterizzati e ne è stata studiata l’attività antitumorale in vitro [1]. Recentemente sono stati preparati complessi con metalli del quarto periodo di transizione con entrambi i leganti, dipirido[3,2-a:2’,3’-c]fenazina (dppz) e glicinato (gly) [2]. I composti di nuova sintesi vengono generalmente caratterizzati attraverso parecchie tecniche analitiche incluso la cristallografia a raggi-X e la loro attività antitumorale viene testata su un vasto pannello di linee cellulari umane [1,2]. Le proprietà biologiche spesso sono correlate alla loro interazione …