Search results for "PPE"

Psiholoģija (Latvijas Universitātes Raksti, 801. sēj.)

2014

Sadzīvošana. Etnogrāfiskas pārdomas par attiecībām mūsdienu Latvijā

2022

Grāmata ir antropoloģisks vēstījums par cilvēku attiecībām mūsdienu Latvijā. Sadzīvošana vairs nav viennozīmīgi pozitīvs vārds un iezīmē attiecību pārrāvumu, piespiešanos uzturēt attiecības, kur to vairs nav. Grāmatas virsrakstā tas ir palicis kā atgādinājums par savstarpējo attiecību dabas maiņu mūsdienu dzīvē cerībā, ka ar laiku mēs varēsim sadzīvošanu reabilitēt un piešķirt tai sākotnējo vērtību - būt ciešā sadarbībā un labās attiecībās citam ar citu. Pirmā grāmatas daļa ir veltīta bērnu audzināšanas paradumiem un to maiņai. Otrā sadaļa pievēršas pāru attiecībām un ģimenei. Trešā sadaļa aptver kaimiņattiecības un cilvēku sadzīvi kopienā. Pēdējā sadaļa ir veltīta vecumam.

Quantum-chemical determination of Born–Oppenheimer breakdown parameters for rotational constants: the open-shell species CN, CO+ and BO

2013

The quantum-chemical protocol for computing Born-Oppenheimer breakdown corrections to rotational constants in the case of diatomic molecules is extended to open-shell species. The deviation from the Born-Oppenheimer equilibrium rotational constant is obtained by considering three contributions: the adiabatic correction to the equilibrium bond distance, the electronic contribution to the moment of inertia requiring the computation of the rotational g-tensor, and the so-called Dunham correction. Values for the Born-Oppenheimer breakdown parameters of CN, CO+, and BO in their (2)sigma(+) electronic ground states are reported based on coupled-cluster calculations of the involved quantities and …

Decorated pottery study: Analysis of pigments by x-ray absorbance spectroscopy measurements

2007

Characterization of pigments on decorated pottery fragments has been fully carried out by nondestructive x-ray absorbance spectroscopy (XAS). The samples were a series of pottery shards excavated from the archeological site of Caltagirone (Sicily, Italy), a well-known ceramic production center. Aesthetical criteria and morphological observations allowed us to attribute the samples to quite different historical periods, starting from the 18th century B.C. up to the 16th century A.D. An extensive time interval led us to suppose that different materials and techniques were used for the production of the ceramic paste and also for the preparation of pigments. XAS measurements were performed at …

Central functional response to the novel peptide cannabinoid, hemopressin.

2013

Hemopressin is the first peptide ligand to be described for the CB₁ cannabinoid receptor. Hemopressin acts as an inverse agonist in vivo and can cross the blood-brain barrier to both inhibit appetite and induce antinociception. Despite being highly effective, synthetic CB₁ inverse agonists are limited therapeutically due to unwanted, over dampening of central reward pathways. However, hemopressin appears to have its effect on appetite by affecting satiety rather than reward, suggesting an alternative mode of action which might avoid adverse side effects. Here, to resolve the neuronal circuitry mediating hemopressin's actions, we have combined blood-oxygen-level-dependent, pharmacological-ch…

Search for Extraterrestrial Point Sources of Neutrinos with AMANDA-II

2003

We present the results of a search for point sources of high energy neutrinos in the northern hemisphere using AMANDA-II data collected in the year 2000. Included are flux limits on several AGN blazars, microquasars, magnetars and other candidate neutrino sources. A search for excesses above a random background of cosmic-ray-induced atmospheric neutrinos and misreconstructed downgoing cosmic-ray muons reveals no statistically significant neutrino point sources. We show that AMANDA-II has achieved the sensitivity required to probe known TeV gamma-ray sources such as the blazar Markarian 501 in its 1997 flaring state at a level where neutrino and gamma-ray fluxes are equal.

Outer suburbs, car dependence and residential choice in France, In: Planning After Petroleum: Preparing Cities for the Age Beyond Oil

2016

In a discussion of the findings of extensive research of everyday household practices, this chapter suggests effective policy responses to increasingly more expensive petrol prices. Our research involved interviews, observations and analyses of low-income households adapting their mobility practices and residential locations within highly car-dependent urban environments. The chapter examines two main types of practices of households in car-dependent outer suburbs: either households opt 'to stay', forgoing sustained mobility and a varied range of activities, or they choose 'to go' and relocate in areas where travel costs are less of a burden on their budgets. Our research analyzed statistic…

Stabilized Naked Sub-nanometric Cu Clusters within a Polymeric Film Catalyze C-N, C-C, C-O, C-S, and C-P Bond-Forming Reactions

2015

[EN] Sub-nanometric Cu clusters formed by endogenous reduction of Cu salts and Cu nanoparticles are active and selective catalysts for C−N, C−C, C−O, C−S, and C−P bond-forming reactions. Sub-nanometric Cu clusters have also been generated within a polymeric film and stored with full stability for months. In this way, they are ready to be used on demand and maintain high activity (TONs up to 104 ) and selectivity for the above reactions. A potential mechanism for the formation of the sub-nanometric clusters and their electronic nature is presented.

Entre Trapani et Tunis. De la période du Risorgimento à la fin du Protectorat français: parcours de travailleurs et d’entrepreneurs au-delà du Canal …

2019

Sin dai tempi più antichi, il Canale di Sicilia e la città di Trapani hanno costituito un ponte naturale fra il Maghreb e la Sicilia. Il saggio mette a sistema alcuni studi sugli architetti ed imprenditori di origine trapanese che emigrarono in Tunisia fra il XVIII e XIX secolo e ne propone una lettura inedita. Il fil rouge che lega Giuseppe Abita, la famiglia di imprenditori Canino e Domenico Basciano riguarda sia la loro provenienza dalla città siciliana, ma soprattutto l'importante contributo che essi hanno trasferito nell'architettura del periodo coloniale e post-coloniale francese nel Maghreb.

The Arabidopsis heavy metal P-type ATPase HMA5 interacts with metallochaperones and functions in copper detoxification of roots

2005

*† ‡ § Summary Since copper (Cu) is essential in key physiological oxidation reactions, organisms have developed strategies for handling Cu while avoiding its potentially toxic effects. Among the tools that have evolved to cope with Cu is a network of Cu homeostasis factors such as Cu-transporting P-type ATPases that play a key role in transmembrane Cu transport. In this work we present the functional characterization of an Arabidopsis Cutransporting P-type ATPase, denoted heavy metal ATPase 5 (HMA5), and its interaction with Arabidopsis metallochaperones. HMA5 is primarily expressed in roots, and is strongly and specifically induced by Cu in whole plants. We have identified and characteriz…