Search results for "EGG"

Local structure of the supported Keggin and Wells-Dawson heteropolyacids and its consequence on their (photo)catalytic activity

2018

Enhanced (photo)catalytic activity of Wells-Dawson (H6P2W18O62) in comparison to Keggin (H3PW12O40) heteropolyacids for 2-propanol dehydration in gas…

2016

Abstract Catalytic and photocatalytic 2-propanol dehydration to propene at atmospheric pressure and a temperature range of 60–120 °C were carried out in gas-solid regime by using bare and supported Keggin H 3 PW 12 O 40 (PW 12 ) and Wells-Dawson H 6 P 2 W 18 O 62 (P 2 W 18 ) heteropolyacids (HPAs). Binary materials were prepared by impregnation of the HPAs on commercial SiO 2 and TiO 2 . The Wells-Dawson was in any case more active than the Keggin heteropolyacid and the differences were enhanced when the supported samples were used. In particular, Wells-Dawson HPA supported on TiO 2 and under irradiation showed the highest activity. The HPA species played the key role both in the catalytic …

Toxicity of lindane, atrazine, and deltamethrin to early life stages of zebrafish (Brachydanio rerio).

1990

Fertilized eggs of zebrafish were exposed under flow-through conditions to several concentrations of the following pesticides: lindane 40, 80, 110, 130, and 150 micrograms/liter; atrazine 300, 1300, and 9100 micrograms/liter; deltamethrin 0.5, 0.8, and 1.2 micrograms/liter. Hatching, abnormalities in development (external deformations, edema, etc.), and mortality were recorded over a period of 35 days. At the end of the experiment, the body lengths of the fish were measured. Survival of juvenile fish after 35 days was reduced by increasing concentrations of all xenobiotics tested: lindane enhanced the mortality from 110 micrograms/liter and atrazine from 1300 micrograms/liter, and deltameth…

Matematica ... a Distanza. Convinzioni, atteggiamenti e pau- re degli insegnanti di scuola Primaria: esiti di un’indagine statistica

2021

Il paper mette a fuoco gli esiti dell’indagine statistica rivolta agli insegnanti di Ma- tematica di scuola Primaria del contesto italiano, circa l’adozione della Didattica a Distanza (DaD), impiegata durante il periodo di emergenza sanitaria da Covid-19. In una prima parte si inquadra la DaD generale da un punto di vista storico e teorico-pratico e, dopo, il focus diviene l’insegnamento e l’apprendimento della Matematica, attraverso l’e-learning. In una seconda parte viene presentata la ricerca e i risultati ad essa correlati. L’indagine statistica, messa in atto attraverso un questionario, qui interamente riportato, ha avuto l’obiettivo di esaminare le rela- zioni intercorrenti tra moltep…

Institutions, Semiogenesis, Transindividual

2017

CellMinerHCC: a microarray-based expression database for hepatocellular carcinoma cell lines.

2012

Background & Aims Therapeutic options for hepatocellular carcinoma (HCC) still remain limited. Development of gene targeted therapies is a promising option. A better understanding of the underlying molecular biology is gained in in vitro experiments. However, even with targeted manipulation of gene expression varying treatment responses were observed in diverse HCC cell lines. Therefore, information on gene expression profiles of various HCC cell lines may be crucial to experimental designs. To generate a publicly available database containing microarray expression profiles of diverse HCC cell lines. Methods Microarray data were analyzed using an individually scripted R program package. Dat…

Empirical calibration of the clumped isotope paleothermometer using calcites of various origins

2014

We present the first universal calibration of the clumped isotope thermometer for calcites of various mineralizing types. These are an eggshell of an ostrich, a tropical bivalve, a brachiopod shell, cold seep carbonate, and three foraminifera samples that grew between 9 and 38 C. CaCO3 was digested at 90 C using a common acid bath. Considering a difference in phosphoric acid fractionation factors between reaction at 25 and 90 C of 0.069& (Guo et al., 2009), the function between growth temperature T and the excess of 13 C– 18 O bonds in the evolved CO2 is expressed by a linear regression between 1/T 2 and absolute D47 (R 2 = 0.9915):

Luigi Dallapiccola. Il volo dodecafonico

2010

L'articolo fa parte di una serie di sei ritratti di compositori italiani del Novecento realizzati per la rivista della SIAE "Viva Verdi". In particolare, vengono ricostruisce i percorsi creativi di Luigi Dallapiccola tra la fine degli anni Trenta e il secondo dopoguerra, con particolare riferimento alla genesi dell'opera lirica "Volo di notte" (1937-39) e dei "Canti di prigionia" (1939-41).

Responsabilità del piano nei confronti della città

2009

La lettura di un’analisi comparativa delle legislazioni regionali dimostra che i contenuti dei piani urbanistici di livello comunale, al di là delle differenze nominalistiche e di scarti nel recepimento di nuove prassi, tendono ad adattarsi, come è giusto che faccia l’urbanistica, alla natura dei contesti sociali e fisici in cui sono prodotti. Ciò che li accomuna è il rafforzamento della centralità del piano come pratica sociale tesa al benessere collettivo, in contrasto con le dominanti ideologie del libero mercato che rendono impraticabili i tentativi di esitazione di una legge quadro che li armonizzi

Reggae Outernational: Borders and Trans/National Identity in Jamaican Popular Music

2020

International audience; The history of post-1945 Jamaican popular music is one of constantly changing borders. Despite efforts on the part of the Jamaican state to turn reggae into Jamaica’s exclusively national music and a tourist attraction, reggae and its related subgenres remain to this day a minority culture of the underground, in Jamaica itself and in the many places around the world where it is produced and performed. Recent research on the history of Jamaican popular music suggests that it cannot easily be contained within strictly national borders. Reggae can rather be seen as a focal point around which an incipient alter/native, working-class Jamaican identity is built, both insid…