Search results for "Mphi"
showing 10 items of 626 documents
Alles für die Katz’?
2014
Summary The so-called cat’s coffin of prince Thutmose (Egyptian Museum Cairo, CG 5003), which was allegedly found during an excavation at Mit Rahina in 1892, is a curious monument. Whilst prince Thutmose is commonly regarded as a son of Amenhotep III, this coffin so far delivers the only known example for him as “eldest king’s son” and high priest of Ptah at Memphis. But, for several reasons, its authenticity seems to be very dubious.
Voglio tempo. Reflejos emblemáticos en Il trionfo del Tempo e del Disinganno de Benedetto Pamphilij y Georg Friedrich Handel.
2014
ABSTRACT: Allegorical and emblematic images do not appear exclusively in visual literature: Genres such as the Italian or the Italian-inspired Counter-Reformation oratorios, cantatas and sacred or moral operas often contain images quite similar in form and function to those published in the Seventeenth and early Eighteenth-century European collections of emblems. This article analyses some of these parallelisms in the particular case of Il trionfo del Tempo e del Disinganno (c. 1707), by the librettist and patron of the arts Cardinal Benedetto Pamphilj and the composer Georg Friedrich Handel. KEYWORDS: Emblem, Opera, Oratorio, Academy, Discourse, Allegory, Rhetoric, Aural, Visual, Pamphilj,…
Studies of Preparation and Stability of Liposomes Formed by 1,1'-[(3,5-didodeciloxycarbonyl-4-phenyl-1,4-dihydropyridine-2,6-diil)-dimethylen]Bispyri…
2013
In this work we describe the studies of preparation and stability of liposomes formed by 1,1'-[(3,5-didodeciloxycarbonyl-4-phenyl-1,4-dihydropyridine-2,6-diil) dimethylebispyridinium dibromide, novel lipid-like compound. The influence of the amount of amphiphilic compound, solvent and sonication time was studied. Liposomes were prepared by dispersing of compound in the corresponding media at a selected concentration by sonication using a probe type sonicator and characterised by atomic force microscopy (AFM) and dynamic light scattering (DLS) methods.
Geometric and thermodynamic considerations about the lipid vesicles formation in water (I. Unilamellar vesicles)
2001
Abstract A parametrization based on the differential geometry and on the thermodynamics of dispersed systems has been developed in order to explain the processes leading to the formation of lipid vesicles in water. Several factors of known importance such as aqueous interlayer, chain-length, lipid chain-packing and membrane asymmetry, as well as the existence of two different surfaces in the vesicular bilayer have been considered. The barrier which amphiphile molecules need to surpass in order to the vesicle be formed has three contributions related to the surface energy, the mechanical energy due to overpressure and the excess of chemical potential. The theoretical results define the condi…
Dioscuri spartani, Dioscuri beotici: alcune testimonianze iconografiche
2017
The paper discusses an iconographic type recorded on a series of pinakes from the Mannella sanctuary at Locri Epizephyrii portraying two young horsemen (one has a lyra, the other a kantharos) in front of a female figure. This is thought to be the variant of a more common type representing the Spartan Dioskouroi with a shield and phiale. The attributes of the horsemen (kantharos and lyra), unusual for the Tyndaridai, have been interpreted as a reference to the educational value of music and symposia relating to the male element within the context of wedding rituals held in the sanctuary. The lyra, however, may not be a simple element to enrich the meaning of the image, but rather an attribut…
Probing the self-assembly and stability of oligohistidine based rod-like micelles by aggregation induced luminescence.
2016
OA hybrid The synthesis and self-assembly of a new C2-symmetric oligohistidine amphiphile equipped with an aggregation induced emission luminophore is reported. We observe the formation of highly stable and ordered rod-like micelles in phosphate buffered saline, with a critical aggregation concentration below 200 nM. Aggregation induced emission of the luminophore confirms the high stability of the anisotropic assemblies in serum.
NEW SELF-ASSEMBLING POLYASPARTYLHYDRAZIDE COPOLYMER MICELLES FOR ANTICANCER DRUG DELIVERY.
2010
A new amphiphilic copolymer have been synthesized starting from the hydrosoluble polyaspartylhydrazide (PAHy) polymer, by grafting both hydrophilic PEG(2000) chains and hydrophobic palmitic acid (C(16)) moieties on polymer backbone, and the structure of obtained PAHy-PEG(2000)-C(16) copolymer have been characterized by 2D (1)H/(13)C NMR experiments. PAHy-PEG(2000)-C(16) copolymer showed the ability of self-assembling in aqueous media giving a core-shell structure and resulted potentially useful for encapsulating and dissolving hydrophobic drug. The formation of micellar core-shell structure has been investigated by 2D (1)H NMR NOESY experiments. The presence of cross-peaks for protons of C(…
SELF-ASSEMBLED AMPHIPHILIC HYALURONIC ACID GRAFT COPOLYMERS FOR TARGETED RELEASE OF ANTITUMORAL DRUG
2009
Polymeric micelles obtained by self-assembling of amphiphilic hyaluronic acid (HA) graft copolymers have been prepared and characterized. In particular, hyaluronic acid (HA) has been grafted to polylactic acid (PLA) and polyethylenglycol chains (PEG), then the copolymers able to form micelles in aqueous medium have been chosen to entrap the antitumoral drug Doxorubicin. The critical aggregation concentration of HA-g-PLA or HA-g-PLA-g-PEG micelles has been determined by using pyrene as a fluorescent probe, whereas their shape and size have been evaluated by light scattering measurements, scanning and transmission electron microscopies. The selective cytotoxicity of drug loaded micelles towar…
Does foreplay matter? Gammarus pulex females may benefit from long-lasting precopulatory mate guarding.
2011
Precopulatory mate guarding (PCMG) is generally assumed to be costly for both sexes. However, males may gain by displaying long-lasting mate guarding under strong male–male competition. Surprisingly, the potential for females to benefit from being held by males has been largely overlooked in previous studies. In Gammarus pulex , an amphipod crustacean, PCMG lasts several weeks, yet females are described as bearing only cost from such male mating strategy. We investigated potential female benefits by assessing the effect of mate guarding on her intermoult duration. Unpaired females had longer intermoult duration than paired females. Intermoult duration clearly decreased when paired females …
State-dependent pairing behaviour in male Gammarus pulex (L.) (Crustacea, Amphipoda): effects of time left to moult and prior pairing status
2004
Because mating can be costly in terms of time and energy, an individual's propensity to engage in courtship and mating activities might be modulated by its physiological state. However, so far, state-dependent mate choice has received little attention The present study examined the effect of both prior pairing status and time left to the moult on the ability of male Gammarus pulex (Crustacea, Amphipoda) to enter in precopula with receptive females. In the lab, males that were freshly collected in precopula pairs in the field had a higher probability of re-pairing and were quicker to enter in precopula with receptive females compared to males of similar size that were freshly collected unpai…