Search results for "LIGHT"
showing 10 items of 3575 documents
The use of pumice lightweight concrete for masonry applications
2011
In the last two decades, the use of pumice as lightweight aggregate for concrete in structural applications has been the object of different studies. The aim was to find out if pumice can be an alternative to ordinary lightweight aggregate. The present paper is framed in this context. Here, a study is presented showing the use of pumice for making lightweight concrete units for masonry members. Through the paper, the formulation of a mix design for lightweight concrete is proposed. Then the obtained mechanical characteristics of the masonry units are discussed and compared to the code requirements. Reinforced bearing masonry walls, made with the concrete masonry units in question, were made…
Jet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV
2021
Jet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and Pythia 8 based models describe the data well for the higher jT region, while they underestimate the low…
Kamilia Mrozowska (1917-2002) - nauczycielka - uczona - mistrz
2016
Kamilla Mrozowska was born in Petersburg in 1917 and died in Krakow in 2002. She graduated from Warsaw University with a diploma in History. During the Second World War she was involved in secret teaching in Warsaw. She connected her scientific activity with the Jagiellonian University of Krakow, where she earned the degree of Doctor of Philosophy in 1948. In 1958, she was nominated for the post of associate Professor (Docent), and in 1978 – was conferred the title of Full Professor. She specialized in the history of education and child rearing. The majority of her research dealt with the traditions of the Polish Enlightenment and the history of the Jagiellonian University. They concern pro…
Between sacred and profane: religious art in sicily in the diary of a spanish traveller of the eighteenth century
2019
The diary of Antonio Desbrull y Boíl De Arenos's trip to Sicily offers the possibility to observe directly the perception of the sacred art of the author, characterized by an enlightened cultural profile, but far from the neoclassical taste that is the fundamental trait common to many of the contemporary travelers. Desbrull's testimony also allows us to examine some of the main religious buildings on the island, the works contained therein and the architectural decoration, an expression of a baroque taste that strikes and fascinates the author. Sacred art is considered here as a mere aesthetic phenomenon, devoid of the spiritual dimension that lies at the basis of both the commissioning of …
From Country Girl in Southern Finland to Longitudinal Research into Alternatives to Aggression and Violence
2021
Lea Pulkkinen, born in Finland in 1939, is Emerita Professor of Psychology at the University of Jyväskylä (Finland). She is best known for creating the ongoing Jyväskylä Longitudinal Study of Personality and Social Development (JLSPSD). The study was specifically intended to test the hypothesis that the human brain allows for more variation in behavior than the simple ‘fight or flight’ response observed in animal studies of aggression. She further hypothesized that humans’ capacity for cognitive control over emotional behavior was the key factor involved in controlling aggressive behavior. These hypotheses led her to devise an impulse control model to depict behavioral alternatives, which s…
Responsivity measurements of SiC photodiodes
2014
We investigated the technical features of three novel classes of 4H-SiC vertical Schottky UV photodiodes (henceforth, named SiC8, SiC10, SiC20) employing Ni2Si interdigitated strips whose pitch size is 8, 10 and 20 µm respectively [1] and based on the pinch-off surface effect.
Study of the Stability of Citrate Capped AgNPs in Several Environmental Water Matrices by Asymmetrical Flow Field Flow Fractionation
2021
Asymmetrical flow field-flow fractionation (AF4) coupled to UV-Vis and dynamic light scattering (DLS) detectors in series, was tested for stability studies of dispersions of citrate-capped silver nanoparticles (AgNPs) in several water matrices. The main goal is to provide knowledge to understand their possible behavior in the environment for short times since mixturing (up to 180 min). Ultrapure (UPW), bottled (BW1, BW2), tap (TW), transitional (TrW) and sea water (SW) matrices were assayed. Observations were compatible with the aggregation of AgNPs, a change in the plasmon band and a size growth with time were done. Fractograms showed different evolution fingerprints in the function of the…
Quasi *-algebras arising from extensions of positive linear functionals
2010
In this paper we show how some known quasi *-algebras can also be obtained through the construction of slight extensions of nonclosable positive linear functionals defined on dense *-subalgebras Ao of given topological *-algebras. Moreover, we consider also, for each of the functionals we present, their absolutely convergent extensions and the GNS *-representations of the quasi *-algebras arising in the process of extension.
A fluorescence study of the loading and time stability of doxorubicin in sodium cholate/PEO-PPO-PEO triblock copolymer mixed micelles
2019
Abstract Hypothesis Doxorubicin hydrochloride (DX) is one of the most powerful anticancer agents though its clinical use is impaired by severe undesired side effects. DX encapsulation in nanocarrier systems has been introduced as a mean to reduce its toxicity. Micelles of the nonionic triblock copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) (PEO-PPO-PEO), are very promising carrier systems. The positive charge of DX confines the drug to the hydrophilic corona region of the micelles. The use of mixed micelles of PEO-PPO-PEO copolymers and a negatively charged bile salt should favour the solubilization of DX in the apolar core region of the micelles. Experiments We st…
One-loop corrections to light cone wave functions: the dipole picture DIS cross section
2018
We develop methods needed to perform loop calculations in light cone perturbation theory using a helicity basis, refining the method introduced in our earlier work. In particular this includes implementing a consistent way to contract the four-dimensional tensor structures from the helicity vectors with d-dimensional tensors arising from loop integrals, in a way that can be fully automatized. We demonstrate this explicitly by calculating the one-loop correction to the virtual photon to quark-antiquark dipole light cone wave function. This allows us to calculate the deep inelastic scattering cross section in the dipole formalism to next-to-leading order accuracy. Our results, obtained using …