Search results for "40"
showing 10 items of 17345 documents
First measurement of quarkonium polarization in nuclear collisions at the LHC
2021
The polarization of inclusive J/$\psi$ and $\Upsilon(1{\rm S})$ produced in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}=5.02$ TeV at the LHC is measured with the ALICE detector. The study is carried out by reconstructing the quarkonium through its decay to muon pairs in the rapidity region $2.5<y<4$ and measuring the polar and azimuthal angular distributions of the muons. The polarization parameters $\lambda_{\theta}$, $\lambda_{\phi}$ and $\lambda_{\theta\phi}$ are measured in the helicity and Collins-Soper reference frames, in the transverse momentum interval $2<p_{\rm T}<10$ GeV/$c$ and $p_{\rm T}<15$ GeV/$c$ for the J/$\psi$ and $\Upsilon(1{\rm S})$, respectively. The polarization parameter…
[60]Fullerene l -Amino Acids and Peptides: Synthesis under Phase-Transfer Catalysis Using a Phosphine–Borane Linker. Electrochemical Behavior
2017
International audience; A new method to link amino acid and peptide derivatives to [60]fullerene is described. It uses hydrophosphination with a secondary phosphine borane. First, the stereoselective synthesis of secondary phosphine borane amino acid derivatives was achieved by alkylation of phenylphosphine borane with gamma-iodo-alpha-amino ester reagents under phase transfer catalysis (PTC). Second, a sec-phosphine borane amino ester was saponified and coupled with alpha,gamma-diamino esters to afford the corresponding dipeptide derivatives in good yields. Finally, the hydrophosphination reaction of [60]fullerene by the sec-phosphine borane compounds was performed under PTC to obtain C-60…
Performance of the ALICE experiment at the CERN LHC
2014
ALICE is the heavy-ion experiment at the CERN Large Hadron Collider. The experiment continuously took data during the first physics campaign of the machine from fall 2009 until early 2013, using proton and lead-ion beams. In this paper we describe the running environment and the data handling procedures, and discuss the performance of the ALICE detectors and analysis methods for various physics observables.
Feedback and Communication in Active Hydrogel Spheres with pH Fronts: Facile Approaches to Grow Soft Hydrogel Structures
2021
Abstract Compartmentalized reaction networks regulating signal processing, communication and pattern formation are central to living systems. Towards achieving life‐like materials, we compartmentalized urea‐urease and more complex urea‐urease/ester‐esterase pH‐feedback reaction networks into hydrogel spheres and investigate how fuel‐driven pH fronts can be sent out from these spheres and regulated by internal reaction networks. Membrane characteristics are installed by covering urease spheres with responsive hydrogel shells. We then encapsulate the two networks (urea‐urease and ester‐esterase) separately into different hydrogel spheres to devise communication, pattern formation and attracti…
Ethyl hexanoate transfer in paper and plastic food packaging by sorption and permeation experiments
2008
The barrier properties of one treated paper packaging and one standard plastic film (bi-oriented polypropylene, biOPP) were assessed for ethyl hexanoate. Three methods based either on sorption (gravimetry and micro-atmosphere-derived method) or permeation kinetic determination were used in controlled conditions of aroma vapor concentration (107 Pa), temperature (25 degrees C) and relative humidity (about 0 %). Ethyl hexanoate solubility values were on the same range of magnitude for both packaging films in spite of their different nature and composition. Ethyl hexanoate affinity for both films was well predicted by their respective solubility parameters. Solubility values were different acc…
Suojeluskunnat ja Lotta Svärd syksyllä 1944 : toiminnan lakkauttaminen ja omaisuuden luovutukset Keski-Suomessa
2008
Syyskuussa 1944 solmittu aselepo Suomen ja Neuvostoliiton välillä allekirjoitettiin välirauhansopimuksella. Sopimukseen kuuluivat välirauhanehdot, jotka Suomen tuli täyttää. Ehtojen 21. artikla edellytti kaikkien fasististen ja Neuvostoliiton vastaista propagandaa harjoittavien järjestöjen lakkauttamista. Artikla poliittisia ja sotilaallisia järjestöjä. Artiklan nojalla lakkautettiin ensimmäiseksi mm. AKS ja IKL ja marraskuussa suojeluskuntajärjestö ja Lotta Svärd. Viimeksi mainittuja koskivat myös armeijan demobilisaatiovaatimukset, Neuvostoliitto ei voinut hyväksyä vapaaehtoisia sotilaallisia organisaatioita, joihin myös Lotta Svärdin katsottiin kuuluvan. Suojeluskuntajärjestö, josta oli …
Synthesis, NMR spectral and structural studies on mixed ligand complexes of Pd(II) dithiocarbamates: First structural report on palladium(II) dithioc…
2016
Abstract Three new mixed ligand complexes of palladium(II) dithiocarbamates; [Pd(4-dpmpzdtc)(PPh3)(SCN)] (1), [Pd(4-dpmpzdtc)(PPh3)Cl] (2) and [Pd(bzbudtc)(PPh3)Cl] (3), (where, 4-dpmpzdtc = 4-(diphenylmethyl)piperazinecarbodithioato anion, bzbudtc = N-benzyl-N-butyldithiocarbamato anion and PPh3 = triphenylphosphine) have been synthesized from their respective parent dithiocarbamates by ligand exchange reactions and characterized by IR and NMR (1H, 13C and 31P) spectroscopy. IR and NMR spectral data support the isobidentate coordination of the dithiocarbamate ligands in all complexes (1–3) in solid and in solution, respectively. Single crystal diffraction analysis of complexes 1–3 evidence…
Does government spending boost economic growth in Europe?
2016
The article aims to analyse the evolution of budgetary expenditures and their relationship with economic growth, especially in the EU countries and three non-EU countries - Switzerland, Norway and Iceland during 1991 - 2012. To test the link between government spending and economic growth the research used the United Nation Classification of the Functions of Government and three econometrical regression methods – ordinary least square, least squares dummy variable and the generalized method of moments. Statistical results for the 10 categories of expenditure have shown that economic affairs, environmental protection, recreation, culture and religion and social protection have a significant …
A revision of the structure and stratigraphy of pre-Green Tuff ignimbrites at Pantelleria (Strait of Sicily)
2013
International audience; At Pantelleria, peralkaline silicic magmas were erupted across a range of eruptive typologies and magnitudes: pyroclastic flows, Plinian to strombolian pumice fallout and lava flows. In this paper we focus on the intermediate cycle of eruptive activity which is bracketed by ignimbrite units slightly older than the two caldera collapses which marked the volcanological activity of the island. This age interval (180-85 ka) was punctuated by six ignimbrite-forming eruptions (silicic and variably peralkaline) for a cumulative erupted magma volume of approximately 6 km3 dense rock equivalent. Based on new 40Ar/39Ar (Na,K)-feldspar ages and petrographic data, we propose an …
Effetti del Papillomavirus genitale sulla riproduzione umana
2009
Human papillomaviruses (HPVs) are agents of the most common sexually transmitted disease that can infect both females and males. More than 100 HPV-genotypes are known, of these, 40 genotypes infect the low genital tract. Based on their association with cervical cancer and precursor lesions, genital HPVs can also be grouped to high-risk and low-risk HPV-types. Diagnosis of HPV infection is sometime difficult because the infection is often transient and asymptomatic. High-risk HPV types are more likely to persist than are low-risk HPV types. It’s the inability of the immune system to spontaneously clear HPV that leads to development of precancerous cervical lesions. It is generally assumed th…