Search results for "Transmission"

Control of Morphology and Corona Composition in Aggregates of Mixtures of PS-b-PAA and PS-b-P4VP Diblock Copolymers: Effects of Solvent, Water Conten…

2014

The morphologies and corona compositions in aggregates of mixtures of PS-b-PAA and PS-b-P4VP diblock copolymers are influenced by controllable assembly parameters such as water content, block copolymer molar ratios, and solvent effects as well as the hydrophilic block lengths and block length ratios. All these factors can affect the morphology of the aggregates as well as their corona composition, the latter especially in vesicles, where two interfaces are involved. The morphologies and corona compositions of the aggregates were investigated by transmission electron microscopy and electrophoretic mobility, respectively. They depend, to a large extent, on the solubility of P4VP and PAA in th…

Control of Corona Composition and Morphology in Aggregates of Mixtures of PS-b-PAA and PS-b-P4VP Diblock Copolymers: Effects of pH and Block Length

2014

The corona compositions and morphologies in aggregates of mixtures of amphiphilic polystyrene-block-poly(acrylic acid) (PS-b-PAA) and polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymers are influenced by controllable assembly parameters such as the hydrophilic block length and solution pH. The morphologies and corona compositions of the aggregates were investigated by transmission electron microscopy and electrophoretic mobility, respectively. When mineral acids or bases are present during aggregate formation, they can exert a strong influence on the corona composition. Morphology changes were also seen with changing pH, as well as changes in corona composition, specifica…

The Use of Electron Microscopy and Stereology in the Study of the Mammalian Pineal Gland

1983

Now that transmission electron microscopy (TEM) has been used for many years to study the pineal gland it is timely to evaluate what progress has been achieved by using this technique and to speculate which aspects of pineal research may benefit most by its application in the future.

Peripheral motor action of glucagon-like peptide-1 through enteric neuronal receptors

2010

Background  Glucagon-like peptide-1 (GLP-1) is a proglucagon-derived peptide expressed in the enteroendocrine-L cells of small and large intestine and released in response to meal ingestion. Glucagon-like peptide-1 exerts inhibitory effects on gastrointestinal motility through vagal afferents and central nervous mechanisms; however, no data is available about a direct influence on the gastrointestinal wall. Our aim was to investigate the effects of GLP-1 on the spontaneous and evoked mechanical activity of mouse duodenum and colon and to identify the presence and distribution of GLP-1 receptors (GLP-1R) in the muscle coat. Methods  Organ bath recording technique and immunohistochemistry wer…

Classification of Solutions to the Minimum Energy Problem in One Dimensional Sensor Networks

2016

We classify of the minimum energy problem in one dimensional wireless sensor networks for the data transmission cost matrix which is a power function of the distance between transmitter and receiver with any real exponent. We show, how these solutions can be utilized to solve the minimum energy problem for the data transmission cost matrix which is a linear combination of two power functions. We define the minimum energy problem in terms of the sensors signal power, transmission time and capacities of transmission channels. We prove, that for the point-to-point data transmission method utilized by the sensors in the physical layer, when the transmitter adjust the power of its radio signal t…

Maximum Lifetime Problem in Sensor Networks with Limited Channel Capacity

2016

We analyze the maximum lifetime problem in sensor networks with limited channel capacity for multipoint-to-multipoint and broadcast data transmission services. For the transmission model in which the transmitter adjust the power of its radio signal to the distance to the receiver we propose a new Signal to Interference plus Noise Ratio function and use it to modify the Shannon-Hartley channel capacity formula. We show, that in order to achieve an optimal data transmission regarding considered the maximum lifetime problem we cannot allow for any interference of signals. For considered transmission model and the modified capacity formula we solve the maximum lifetime problem in one dimensiona…

La transmission des savoirs professionnels : enjeux méthodologiques et théoriques

2009

Transmission d’entreprise et parentalité

2015

International audience

Teatr postdramatyczny - (R)ewolucja?

2016

Mój artykuł jest krótką refleksją nad kondycją współczesnego teatru, który od drugiej połowy XX wieku wkroczył w „epokę eksperymentowania”. Nazywany obecnie teatrem postdramatycznym, powszechnie kojarzonym z porzuceniem tekstu dramatycznego i zwrotem inscenizatorów ku przekazowi multimedialnemu, stanowi naturalną kontynuację i schedę po Wielkiej Reformie Teatralnej, która na początku XX wieku zapoczątkowała zmiany w teatrze europejskim. W konsekwencji przedstawienie teatralne stanowi już nie tylko nagromadzenie wszystkich możliwych sztuk, co wiąże się z prapoczątkami teatru w ogóle. Przede wszystkim oznacza spotkanie technologii w czasie i przestrzeni. Teatr bowiem zmienił się w rodzaj inst…

Testaments et pratique testamentaire dans le royaume franc (vie-viiie siècle)

2005

Les testaments merovingiens ont de longue date attire l'attention des diplomaties, des historiens du droit et de la societe. U. Nonn a montre la continuite entre testaments romains et merovingiens, mais on s'interroge toujours sur la diffusion de ces actes dans la societe et sur les conditions de leur disparition au IX e siecle. Un reexamen de la question (avec listes du materiel disponible) donne a penser que differents types d'actes a cause de mort etaient utilises dans la societe merovingienne et que les testaments aristocratiques - les seuls connus-, conserves de maniere preferentielle par les heritiers ecclesiastiques qu'ils instituaient, ne sont pas representatifs d'une pratique sans …