Search results for "Masse"
showing 10 items of 219 documents
Pseidogadījumu virkņu izveide ar lineāro nobīdes reģistru un to dešifrēšana
2021
Darbā tiek apskatītas lineāro nobīdes reģistru veidotās virknes un to nejaušība. Šo virkņu nejaušība tiek pārbaudīta ar trīs Golomba postulātiem un statistiskajiem biežuma testiem: testu ar monobitu metodi un testu bloku ietvaros. Tiek izskaidrots, kā teksts tiek pārveidots binārajā kodā un aizšifrēts ar iegūtajām lineāri rekurentajām virknēm, kas pēc tam tiek dešifrēts ar vienādojumu sistēmu vai Berlekampa-Masseja algoritmu. Praktiskajā daļā tiek apskatīts pseidogadījumu virkņu veidošana dažādos garumos, to uzlaušanas un raksturīgo polinomu atrašanas laikietilpīgums.
Mass measurements beyond the major r-process waiting point $^{80}$Zn
2008
High-precision mass measurements on neutron-rich zinc isotopes 71m,72-81Zn have been performed with the Penning trap mass spectrometer ISOLTRAP. For the first time the mass of 81Zn has been experimentally determined. This makes 80Zn the first of the few major waiting points along the path of the astrophysical rapid neutron capture process where neutron separation energy and neutron capture Q-value are determined experimentally. As a consequence, the astrophysical conditions required for this waiting point and its associated abundance signatures to occur in r-process models can now be mapped precisely. The measurements also confirm the robustness of the N = 50 shell closure for Z = 30 farthe…
Mapping and determinism of soil microbial community distribution across an agricultural landscape.
2015
Article en open access; International audience; Despite the relevance of landscape, regarding the spatial patterning of microbial communities and the relative influence of environmental parameters versus human activities, few investigations have been conducted at this scale. Here, we used a systematic grid to characterize the distribution of soil microbial communities at 278 sites across a monitored agricultural landscape of 13km(2). Molecular microbial biomass was estimated by soil DNA recovery and bacterial diversity by 16S rRNA gene pyrosequencing. Geostatistics provided the first maps of microbial community at this scale and revealed a heterogeneous but spatially structured distribution…
INDIVIDUAZIONE DI POLI ENERGETICI PER LA VALORIZZAZIONE DELLE BIOMASSE NELLA SICILIA OCCIDENTALE
Biofonctionnements des sols tropicaux et mode de gestion des terres
2000
L'effet de deux peuplements de nématodes phytoparasites a été étudié en conditions contrôlées sur la croissance du mil (#Pennisetum glaucum$). Les plants de mil (cv. IKMV 8201) ont été cultivés en pots sur du col collecté au Sud du Sénégal dans un champ cultivé (sol cultivé) et dans une jachère de 17 ans (sol de jachère). La moitié du sol de chacun des prélèvements à été stérilisée. Pour compenser l'effet de la stérilisation, six cycles de cultures de mil de deux mois ont été faits avant l'expérimentation. A l'issu de cette période, trois espèces ont été observées sur le sol cultivé non stérilisé : #Scutellonema cavanessi$, #Tylenchorhynchus gladiolatus$ et #Ditylenchus myceliophagus$, dans…
Czekamy - śpiewamy. "Mały Gość Niedzielny" i piosenki na Msze św. roratnie dla dzieci
2022
Every year before Christmas, the weekly newspaper “Gość Niedzielny” prepares materials to be used by parish priests in their work with children during Advent (during rorate missa). Each year they oscillate around one topic. One of the fixed components of the whole set that parishes receive is the so-called Rorate song, which is delivered in musical notation and as recorded music material. The authors and performers are artists associated with the scene of CCM in Poland. These materials have repeatedly aroused controversy. Parish priests emphasise their attractiveness, church musicians question their liturgicality. The paper analyses this phenomenon.
Cadmium mass measurements between the neutron shell closures at N=50 and 82
2010
International audience; The mass values of the neutron-deficient cadmium isotopes 99−109Cd and of the neutronrich isotopes 114,120,122−124,126,128Cd have been measured using ISOLTRAP. The behavior of the separation energies of the cadmium isotopes from N = 50 to 82 is discussed.
Masse cardiache e paracardiache
2010
Experimental study and physical modeling of simultaneous heat and moisture transfer in bio-sourced insulating materials.
2019
The conventional heat transfer models are not sufficiently suitable for thermal characterization of bio-sourced thermal insulating materials due to their strongly hydrophilic nature. The proposed work in this PhD thesis aims to answer this problem with experimental and theoretical approaches of coupled heat-moisture transfers. In the experimental approach, a thermal insulating material based on Flax Fiber Felt (FFF) is developed and then characterized at different hygrometric conditions with an asymmetric hot plate device. The humidity diffusion characterization of the samples is done using the GAB, GDW and Park theoretical moisture adsorption isotherm models. In the theoretical approach, a…
Changements de stratégie temporelle durant des tâches motrices complexes chez des sujets âgés sains
2017
International audience; Cette étude a permis d’analyser des points temporels clefs de la réalisation de mouvements impliquant l’ensemble du corps (Whole Body Reaching movements - WBR). Lors de ce mouvement, le sujet déplace son Centre de Masse (CdM) vers l’avant pour l’atteindre une cible. Ceci implique une inclinaison du tronc créant des modifications posturales et un risque de chute. Ces différentes considérations nous ont poussées à étudier une population de sujets âgés (SA) en comparaison à des sujets jeunes (SJ). Nous avons analysé des points stratégiques au cours de la tâche, dont deux plus particulièrement. La décomposition axiale de la vitesse du CdM en deux composantes (Verticale-V…