550 research outputs found
My home is my new office: the relationship between environmental comfort, workplace attachment, and psychological needs in the context of remote working
As a result of the COVID-19 pandemic, more and more organizations have implemented remote working, and more and more workers have experienced an overlap between home and work environments. Home environments, therefore, had to be readjusted in their spatial configurations to meet and satisfy the needs of workers. Through the lens of Self-Determination Theory, the study aims to investigate how perceived remote workplace environment quality indicators (PRWEQIs) can contribute to greater home working engagement through the satisfaction of autonomy, competence, and relatedness needs and attachment to the home workplace. The research consists of two cross-sectional studies. The first one examines how the place-related needs of autonomy, competence, and relationship, satisfied by the home working place features, can mediate the effect of perceived comfort on home workplace attachment. The second study analyzes how comfort and workplace attachment can contribute to satisfying the same needs referred to the job activities, thus generating greater engagement in the home worker. The research provides supportive empirical evidence that workplace attachment can also be developed under home working conditions
Agli albori della libera stampa in Sardegna: note sulla lingua della “Gazzetta popolare”
The study analyses the language of the “Gazzetta popolare” (1850-1868), the most important periodical of the mid nineteenth century in Sardinia. The syntax and lexicon of the periodical, which freely deals with social and economic questions, contain a number of innovative elements, although the journal’s language (especially spelling and morphology) generally favour traditional forms of writing. Conciseness and essentiality mark the syntactical forms; moreover, new uses of verbs (for example, conditional mood or imperfect tense) are often found in the text, similar to modern journalistic language. The analysis of the lexicon shows many important neologisms and foreign words from the political lexical field that was developing in that period in its modern form.L’articolo studia la lingua della “Gazzetta popolare (1850-1868), il periodico più importante della metà dell’Ottocento in Sardegna. La sintassi e il lessico del giornale, che affrontò con spirito libertario i problemi sociali ed economici dell’isola, presentano numerosi elementi innovativi, sebbene la lingua del giornale (con particolare riguardo alla fonetica e alla morfologia), sia generalmente caratterizzata da scelte tradizionali. Le forme sintattiche si distinguono per concisione ed essenzialità; emergono, inoltre, nuovi usi del verbo (per esempio condizionale “di dissociazione”, imperfetto “cronistico”), che si imporranno successivamente nel linguaggio giornalistico. L’analisi del lessico mostra la presenza di numerosi neologismi e prestiti del settore politico, che in quel periodo stava assumendo la fisionomia moderna
Minor mutations in HIV protease at baseline and appearance of primary mutation 90M in patients for whom their first protease-inhibitor ntiretroviral regimens failed
The association between minor mutations in human immunodeficiency
virus (HIV) protease at baseline and development
of common primary mutation 90M at virological failure (conferring
some resistance to all protease inhibitors [PIs]) was
evaluated in 93 previously drug-naive patients experiencing
failure of their first PI-based antiretroviral regimens. In logistic
regression analysis, the probability of accumulating a new 90M
mutation at virological failure was associated with the presence
at baseline of minor mutation 36I (naturally occurring in
∼25% of HIV clade B and in >80% of HIV non-clade-B viruses)
(adjusted odds ratio, 13.5 [95% confidence interval, 1.89–95.6];
P=.009) and, possibly, of 10I/V. This suggests a potential role
for the presence of 36I at baseline in predicting the appearance
of 90M at virological failure
Common Peroneal Nerve Injury Related to Small Saphenous Vein Surgery: Report of 2 Cases and Review of the Literature
Although iatrogenic damage is less often involved, deep nerve injuries are reported especially as a result of small saphenous vein (SSV) dissection. Complete or partial division of the common peroneal nerve (CPN) during varicose vein operations causes substantial and serious disability. Most CPN injuries recover spontaneously; nonetheless, some require nerve surgery. Treatment depends on the nature of CPN injury. This report chronicles 2 instances of CPN injury after SSV surgery, addressing treatment strategies and therapeutic gains. The pertinent literature is also reviewed
Neutral Solar Wind Detector (NSWD) for Solar Orbiter
The Neutral Solar Wind Detector (NSWD), to be flown on board Solar Orbiter, consists of a neutral atom sensor able to detect and characterize (in terms of velocity and direction) the energetic neutrals flowing together the ionised particles within the solar wind, between ∼0.05 keV/nuc and ∼5 keV/nuc. This may be a stand-alone instrument (indicated as high priority augmentation payload in the Solar Orbiter PDD), but it is also suitable for inclusion in the solar wind particle package SWA.
The NSWD primary scientific objectives may be summarized as in the following:
• observation of neutral solar wind flux;
• velocity, density and temperature of the neutral solar wind;
• comprehension of solar Ly-α corona, i.e. deduction of solar wind plasma velocity distributions
anisotropy perpendicular and along the solar magnetic field lines from neutral solar wind
observations;
• study of the solar wind acceleration region via the detection of the neutral solar wind
hydrogen atoms and investigation of the temporal and spatial details of the solar wind using
the co-aligned movement of the Solar Orbiter spacecraft with respect to the solar rotation;
• observation of the fast and slow neutral solar wind in different solar conditions, potentially
including transitions regions and CMEs;
• resolution of the "inner source" pick-up ion puzzle thought to originate from solar wind
plasma - dust interaction in the solar atmosphere region within 0.2 AU
Analisi chimiche
Le indagini chimiche eseguite presso il Centro di Spettroscopia(SS) tendevano (innanzitutto) ad accertare la la provenienza e il tipo d'impasto argilloso utilizzato per la fabbricazione delle ceramiche
Analisi archeometriche su ceramiche di cultura Abealzu e Filigosa
Il presente lavoro prende in esame 28 reperti ceramici, di cui 3 dalla domus de janas I di Santu Pedru o "Tomba dei Vasi Tetrapodi" Alghero e 25 provenienti dalla domus de janas II di Monte d'Accoddi-Sassari, attribuiti rispettivamente alla cultura di Filigosa e a quella di Abealzu, poste tra il 2360 ed il 2130 (cal. 2900+2400) la prima, tra il 2300 ed il 2200 (cal. 2850+2630) la seconda. Considerato il carattere sperimentale dell'indagine e l'uso di tecniche distruttive,
la scelta dei materiali ceramici è stata fatta su frammenti sulla base di caratteristiche morfo-tecnologiche, con esclusione di reperti tipici e di forme intere. L'approccio scelto, multidisciplinare, prevede, accanto all'indagine archeologica e geologico-petrografica, l'uso di tecniche analitiche quali l'Analisi
per Attivazione Neutronica, la Spettroscopia Infrarosso e l'Analisi Termogravimetrica
The Occurrence of Skeletons of Silicoflagellata and Other Siliceous Bioparticles in Floral Honeys
International audienceSiliceous marine microfossils were unexpectedly discovered during the analysis of flower honey samples from Poland and Tunisia. The microfossils were represented by protist with siliceous skeletons: silicoflagellates, diatoms, and endoskeletal dinoflagellates. This is the first record of such microfossils in honeys. Based on the high percent of anemophilous pollen grains and spores in the sample, it was hypothesized that silicoflagellates were deposited from the air onto the nectariferous flowers, then bees harvested them with the nectar. Based on the comparison of pollen content of honeys and flowering calendar of Tunisia, the harvest time of honey was identified as a period between 1 April and 31 May 2011. Trajectory analysis of air masses in this period confirmed that siliceous microfossils could be aerosolized by wind from the rocks of the so-called Tripoli Formation of Messinian age (6–7 Ma). Similar to the Tunisian case, the Polish trajectory simulation also supports the hypothesis of atmospheric transport of silicoflagellates from outcrops of Oligocene age in the Polish Outer Carpathians. In the case of diatom content of honey, however, the source can be both natural (wind) and artificial (diatomaceous earth filters). For a correct determination, natural sources of siliceous bioparticles, such as wind transport from nearby outcrops should be also considered. Silicoflagellates could be used as complementary indicators of the geographical origin of honeys collected in areas characterized by diatomite outcrops, supporting the results obtained with other methods; thus, such indicators merit further studies within the area of honey authenticity
Peeking beneath the precision floor I: metallicity spreads and multiple elemental dispersions in the globular clusters NGC 288 and NGC 362
The view of globular clusters (GCs) as simple systems continues to unravel,
revealing complex objects hosting multiple chemical peculiarities. Using
differential abundance analysis, we probe the chemistry of the Type I GC, NGC
288 and the Type II GC, NGC 362 at the 2\% level for the first time. We measure
20 elements and find differential measurement uncertainties on the order
0.01-0.02 dex in both clusters. The smallest uncertainties are measured for Fe
I in both clusters, with an average uncertainty of 0.013 dex. Dispersion
in the abundances of Na, Al, Ti I, Ni, Fe I, Y, Zr, Ba and Nd are recovered in
NGC 288, none of which can be explained by a spread in He. This is the first
time, to our knowledge, a statistically significant spread in -process
elements and a potential spread in metallicity has been detected in NGC 288. In
NGC 362, we find significant dispersion in the same elements as NGC 288, with
the addition of Co, Cu, Zn, Sr, La, Ce, and Eu. Two distinct groups are
recovered in NGC 362, separated by 0.3 dex in average differential -process
abundances. Given strong correlations between Al and several -process
elements, and a significant correlation between Mg and Si, we propose that the
-process rich group is younger. This agrees with asymptotic giant branch
star (AGB) enrichment between generations, if there is overlap between low- and
intermediate-mass AGBs. In our scenario, the older population is dominated by
the -process with a ratio of
. We propose that the -process dominance and dispersion found
in NGC 362 are primordial.Comment: First paper in a series. Accepted for publication in MNRA
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