Search results for " Sn"

Report of the COSPAR Mars special regions colloquium

2010

International audience; In this paper we present the findings of a COSPAR Mars Special Regions Colloquium held in Rome in 2007. We review and discuss the definition of Mars Special Regions, the physical parameters used to define Mars Special Regions, and physical features on Mars that can be interpreted as Mars Special Regions. We conclude that any region experiencing temperatures > -25 degrees C for a few hours a year and a water activity > 0.5 can potentially allow the replication of terrestrial microorganisms. Physical features on Mars that can be interpreted as meeting these conditions constitute a Mars Special Region. Based on current knowledge of the martian environment and the conser…

In-line holography of cloud volumes applied to the measurement of raindrops and snowflakes

1998

Abstract The ground-based HODAR (HOlographic Droplet and Aerosol Recording) of the University of Mainz has been operational since 1989 on the Kleiner Feldberg Mountain Observatory near Frankfurt/Main, Germany, in a `small volume' configuration. With this setup an air volume of approximately 1 l can be in situ recorded, which allows it to image all aerosol particles and droplets with diameter larger than 6 μm contained in the sample volume in situ. Recently the beam diameter and optical path length of the inline system have been enlarged such that large cloud volumes (approximately 500 l) can be recorded on single holograms. During the holographic image reconstruction step in the laboratory,…

2015

Abstract. During the winter of 2013 and 2014 measurements of cloud microphysical properties over a 5-week period at the high-alpine site Jungfraujoch, Switzerland, were carried out as part of the Cloud Aerosol Characterisation Experiments (CLACE) and the Ice Nucleation Process Investigation and Quantification project (INUPIAQ). Measurements of aerosol properties at a second, lower site, Schilthorn, Switzerland, were used as input for a primary ice nucleation scheme to predict ice nuclei concentrations at Jungfraujoch. Frequent, rapid transitions in the ice and liquid properties of the clouds at Jungfraujoch were identified that led to large fluctuations in ice mass fractions over temporal s…

Iekšējā komunikācija un apmierinātība ar darbu uzņēmumā SIA "Allnex Latvia".

2020

Bakalaura darba temats ir ‘’Komunikācija un atgriezeniskās saites sniegšana uzņēmumā SIA’’Allnex Latvia’’’’. Darba mērķis ir: pamatojoties uz teorētisko informāciju, novērtēt uzņēmuma SIA ‘’Allnex Latvia’’ iekšējās komunikācijas un atgriezeniskās saites efektivitāti un izvirzīt priekšlikumus tās uzlabošanai. Darbā ir apkopota teorētiskā informācija par komunikāciju uzņēmumā un atgriezeniskās saites sniegšanu un tās metodēm, kā arī informācija par iekšējo komunikāciju un atgriezeniskās saites sniegšanu uzņēmumā SIA ’’Allnex Latvia’’. Darbs sastāv no trīs nodaļām. Pirmajā nodaļā tiek apskatīti temata teorētiskie aspekti un analizēti teorētiskie materiāli. Šajā nodaļā tiek aprakstīta iekšējā k…

Genome-wide homozygosity in Maremmana cattle

2017

The current availability of large numbers of single nucleotide polymorphisms (SNPs) throughout the genome makes these markers particularly suitable for the detection of patterns of genetic diversity and of genome-wide homozygosity in animal populations. The aim of this work was to estimate genetic diversity and homozygosity in the Maremmana cattle breed. We used a sample of 149 animals (males and females) geno-typed with the BovineSNP50 v2 (54K) Illumina BeadChip. After editing for call-rate >0.9 and removing SNP unassigned or on the sex chromosomes, 128 animals and 50,814 SNPs were left. We estimated the following genetic parameters: observed and expected heterozygosity (Ho and He), minor …

Caratterizzazione genetica della razza Bracco Francese ed analisi comparative con le principali razze canine

2018

Il sequenziamento del genoma canino ha contribuito a migliorare l’accuratezza delle stime di diversità genetica ed ha anche generato diversi studi sulle relazioni tra le diverse razze allevate (Vaysse et al., 2011; Parker et al., 2017). Tuttavia, alcune razze rimangono ancora poco caratterizzate. È il caso del Bracco Francese tipo Pyrénées. Lo scopo di questo lavoro è stato quello di caratterizzare a livello genomico la razza e studiarne le relazioni con altre razze allevate nel mondo. Sono stati raccolti i campioni di sangue da 48 individui. La genotipizzazione è stata condotta mediante l’Illumina CanineHD BeadChip (173.662 marcatori). Diversi parametri di diversità genetica sono stati cal…

Variable-order reference-free variant discovery with the Burrows-Wheeler Transform

2020

Abstract Background In [Prezza et al., AMB 2019], a new reference-free and alignment-free framework for the detection of SNPs was suggested and tested. The framework, based on the Burrows-Wheeler Transform (BWT), significantly improves sensitivity and precision of previous de Bruijn graphs based tools by overcoming several of their limitations, namely: (i) the need to establish a fixed value, usually small, for the order k, (ii) the loss of important information such as k-mer coverage and adjacency of k-mers within the same read, and (iii) bad performance in repeated regions longer than k bases. The preliminary tool, however, was able to identify only SNPs and it was too slow and memory con…

Clinical and Neurophysiological Follow-Up of Chronic Inflammatory Demyelinating Polyneuropathy Patients Treated with Subcutaneous Immunoglobulins: A …

2022

Background: chronic idiopathic demyelinating polyneuropathy (CIDP) is an acquired, immune-mediated neuropathy characterized by weakness, sensory symptoms and significant reduction or loss of deep tendon reflexes evolving over 2 months at least, associated with electrophysiological evidence of peripheral nerve demyelination. Recently, subcutaneous immunoglobulins (SCIg) have been introduced in clinical practice as a maintenance therapy for CIDP; nevertheless, electrophysiological and efficacy data are limited. Methods: to evaluate SCIg treatment efficacy, we retrospectively reviewed data from 15 CIDP patients referring to our clinic, receiving SCIg treatment and who performed electrophysiolo…

Genome-Wide Analyses Identifies Known and New Markers Responsible of Chicken Plumage Color

2020

Simple Summary In order to assess sources of variation related to Polverara breed plumage color (black vs. white), we carried out genome-wide analyses to identify the genomic regions involved in this trait. The present work has revealed new candidate genes involved in the phenotypic variability in local chicken populations. These results also contribute insights into the genetic basis for plumage color in poultry, and confirm the great complexity of the mechanisms that control this trait. Abstract Through the development of the high-throughput genotyping arrays, molecular markers and genes related to phenotypic traits have been identified in livestock species. In poultry, plumage color is a…

Genome-wide analysis reveals the patterns of genetic diversity and population structure of 8 Italian local chicken breeds

2021

The aim of this study was to conduct a genome-wide comparative analysis of 8 local Italian chicken breeds (Ermellinata di Rovigo, Millefiori di Lonigo [PML], Polverara Bianca, Polverara Nera, Padovana, Pepoi [PPP], Robusta Lionata, and Robusta Maculata), all under a conservation plan, to understand their genetic diversity and population structure. A total of 152 animals were analyzed using the Affymetrix Axiom 600 K Chicken Genotyping Array. The levels of genetic diversity were highest and lowest in PML and PPP, respectively. The results of genomic inbreeding based on runs of homozygosity (ROH; FROH) showed marked differences among breeds and ranged from 0.161 (PML) to 0.478 (PPP). Furtherm…