Search results for "SD"
showing 10 items of 20459 documents
Targeting the Activin Receptor Signaling to Counteract the Multi-Systemic Complications of Cancer and Its Treatments
2021
Muscle wasting, i.e., cachexia, frequently occurs in cancer and associates with poor prognosis and increased morbidity and mortality. Anticancer treatments have also been shown to contribute to sustainment or exacerbation of cachexia, thus affecting quality of life and overall survival in cancer patients. Pre-clinical studies have shown that blocking activin receptor type 2 (ACVR2) or its ligands and their downstream signaling can preserve muscle mass in rodents bearing experimental cancers, as well as in chemotherapy-treated animals. In tumor-bearing mice, the prevention of skeletal and respiratory muscle wasting was also associated with improved survival. However, the definitive proof tha…
Erosion, screening, and migration of tungsten in the JET divertor
2019
The erosion of tungsten (W), induced by the bombardment of plasma and impurity particles, determines the lifetime of plasma-facing components as well as impacting on plasma performance by the influx of W into the confined region. The screening of W by the divertor and the transport of W in the plasma determines largely the W content in the plasma core, but the W source strength itself has a vital impact on this process. The JET tokamak experiment provides access to a large set of W erosion-determining parameters and permits a detailed description of the W source in the divertor closest to the ITER one: (i) effective sputtering yields and fluxes as function of impact energy of intrinsic (Be,…
Farming intensity indirectly reduces crop yield through negative effects on agrobiodiversity and key ecological functions
2022
International audience; Farming intensity and landscape heterogeneity influence agrobiodiversity and associated ecological functions. The relative contributions of these agroecosystem components to agricultural production remain unclear because of inter-relations and weather-dependant variations. Using a structural equation modelling approach, we estimated direct and indirect contributions of farming intensity (soil management, pesticide use and fertilisation) and landscape heterogeneity (of semi-natural covers and crop mosaic) to cereal crop production, in 54 fields (mostly wheat), in two years (24 and 30 fields). Indirect effects were evaluated through agrobiodiversity (carabid and plant …
Meža ugunsgrēki Latvijā un meteoroloģisko apstākļu ietekme uz tiem
2015
Bakalaura darba ietvaros aprakstīti meža ugunsgrēku veidi, to izcelšanas cēloņi un sekas. Aprakstīti meža ugunsgrēku novēršanas un ierobežošanas pasākumi, kā arī to novērošanas un prognozēšanas metodes. Aprakstītas pasaulē, Eiropā un Latvijā izmantotās ugunsbīstamības prognozēšanas metodes. Darbā ir aprakstīta meteoroloģisko apstākļu ietekme uz meža ugunsgrēku norisi un izplatību. Darbā apkopoti dati par meža ugunsgrēku gadījumiem, un raksturota meža ugunsgrēku situācija Latvijā. Apkopoti dati par meteoroloģisko apstākļu ietekmi uz meža ugunsgrēku izplatību pētamajās valsts teritorijās. Izdarīti secinajumi par meža ugunsgrēku izcelšanās cēloņiem, to sezonalitāti un izmaiņu tenedencēm, noska…
Tutkimus tehostaa suojelutoimia : yhteenveto Puutteellisesti tunnettujen ja uhanalaisten metsälajien tutkimusohjelman vaikuttavuudesta
2017
Non peer reviewed
Ultra-High Energy Neutrinos at the Pierre Auger Observatory
2013
The observation of ultrahigh energy neutrinos (UHE nu s) has become a priority in experimental astroparticle physics. UHE nu s can be detected with a variety of techniques. In particular, neutrinos can interact in the atmosphere (downward-going nu) or in the Earth crust (Earth-skimming nu), producing air showers that can be observed with arrays of detectors at the ground. With the surface detector array of the Pierre Auger Observatory we can detect these types of cascades. The distinguishing signature for neutrino events is the presence of very inclined showers produced close to the ground (i.e., after having traversed a large amount of atmosphere). In this work we review the procedure and …
Experimental Constraints on the Deep Magma Feeding System at StromboliVolcano, Italy
2009
International audience; New experiments have been performed on a high-K basalt (PST-9) from Stromboli volcano, Italy, to constrain the physical conditions of golden pumice magmas at their storage level and discuss their petrogenesis. Fluid-present, H2O- and CO2-bearing, near-liquidus experiments were performed at 11508C between 100 and 400MPa and under oxidizing conditions. Glasses were analyzed by Fourier transform IR spectroscopy and their H2O and CO2 concentrations compared with those in glass inclusions.Most glass inclusions cluster near the 200MPa isobar, suggesting entrapment at a depth of ~8 km. Golden pumice magmas have viscosities of 7.9 Pa s and densities of 2.48-2.57 g/cm3. Compo…
Ultra-high temperature metamorphism recorded in Fe-rich olivine-bearing migmatite from the Khondalite Belt, North China Craton
2018
International audience; We document the first occurrence of Fe‐rich olivine‐bearing migmatitic metapelite in the Khondalite Belt, North China Craton. Petrological analyses revealed two exotic assemblages of orthopyroxene+spinel+olivine and orthopyroxene+spinel+cordierite. Phase relation modelling suggests that these assemblages are diagnostic of ultra‐high temperature (UHT) metamorphism in the Fe‐rich system, with temperatures from 1,000 to 1,050°C at 0.6 GPa. U–Th–Pb SIMS analyses on zircon reveal a similar age of c. 1.92 Ga for the olivine‐bearing migmatite and an adjacent gabbronoritic intrusion that is therefore identified as the heat source for the UHT metamorphism. These results, coup…
Dis grand-mère, est-ce que tu as des belles dents ?
2022
Universālā jurisdikcija starptautiskajās publiskajās tiesībās
2016
Darbā ir apskatīta universālā jurisdikcija starptautiskajās publiskajās tiesībās. Pētījuma mērķis ir vispusīga šī jēdziena analīze ar mērķi konstatēt starptautisko tiesību paražas esamību. Tiek apskatīta valstu prakse, ieskaitot nacionālos normatīvos aktus un starptautiskos konvencionālos instrumentus, kas regulē jurisdikciju, analizēti dažādu tiesu nolēmumi. Iegūtās atziņas tiek izmantotas paražu tiesību normas konstatācijai. Darba beigās autors veic secinājumus par universālās jurisdikcijas statusu starptautiskajās publiskajās tiesībās. Atslēgvārdi: universālā jurisdikcija, genocīds, noziegumi pret cilvēci, kara noziegumi, jurisdikcijas režīmi