Effect of Glass Fiber Hybridization on the Behavior Under Impact of Woven Carbon Fiber/Epoxy Laminates

The low-velocity impact behavior was studied in hybrid laminates manufactured by RTM with woven carbon and glass (S2) fabrics. Specimens with different thicknesses and glass fiber content (from 0 to 21 vol.%) were tested with impact energies in the range 30–245 J and the resulting deformation and fracture micromechanisms were studied using X-ray microtomography. The results of these analyses, together with those of the impact tests (maximum load and energy absorbed), were used to elucidate the role played by glass fiber hybridization on the fracture micromechanisms and on the overall laminate performance under low-velocity impact

Coordination between cell proliferation and apoptosis after DNA damage in Drosophila

Exposure to genotoxic stress promotes cell cycle arrest and DNA repair or apoptosis. These “life” or “death” cell fate decisions often rely on the activity of the tumor suppressor gene p53. Therefore, the precise regulation of p53 is essential to maintain tissue homeostasis and to prevent cancer development. However, how cell cycle progression has an impact on p53 cell fate decision-making is mostly unknown. In this work, we demonstrate that Drosophila p53 proapoptotic activity can be impacted by the G2/M kinase Cdk1. We find that cell cycle arrested or endocycle-induced cells are refractory to ionizing radiation-induced apoptosis. We show that p53 binding to the regulatory elements of the proapoptotic genes and its ability to activate their expression is compromised in experimentally arrested cells. Our results indicate that p53 genetically and physically interacts with Cdk1 and that p53 proapoptotic role is regulated by the cell cycle status of the cell. We propose a model in which cell cycle progression and p53 proapoptotic activity are molecularly connected to coordinate the appropriate response after DNA damag

Modelization of advanced nonwoven fabrics subjected to tensile loads

Umjetnosti predstavljaju bitan dio odgojno-obrazovnog procesa jer pružaju djeci mogućnost izražavanja misli, emocija, istraživanja novih ideja te time doprinose cjelovitom razvoju djeteta. Ples je za djecu najprirodnije sredstvo izraza jer slobodno i nesputano ritmičko kretanje pruža radost i zadovoljstvo te djeci omogućuje izražavanje i komuniciranje pokretom. Važnost plesno-ritmičkog odgoja za razvoj svakog pojedinog djeteta sadržana je u potrebi za izražavanjem njegove cjelokupne ličnosti. U novije vrijeme sve se više okreće kreativnom plesu, kao novoj formi plesa. Kreativni ples, za razliku od ostalih plesova, dopušta i zahtijeva spontanu kreativnost i improvizaciju te može sadržavati elemente i plesne forme bilo kojeg plesa. U kreativnom plesu pokreti se kombiniraju, stvaraju u tijelu i ostvaruju u potpuno novoj dimenziji. Time se zadržava dječje stvaralaštvo u njegovoj izvornosti. Ovim diplomskim radom stavlja se naglasak kako suština plesa unutar odgojno-obrazovne prakse nije u zapamćivanju i ponavljanju pokazanih pokreta već u poticanju djece da u skladu sa svojim sposobnostima istražuju pokret kroz različite poticaje u kontekstu sadržaja tema umjetničkog odgojnog plesa.Art is an essential part of the educational process, as it provides children with the ability to express their thoughts, emotions, research into new ideas and it contributes to the integral development of the child. Dance is the most natural mean of expression for children because free and unrestrained rhythmic movement provides joy and pleasure and enables children to express and communicate through movement. The importance of dance and rhythmic education, for each individual child, is contained in the need to express his entire personality. Creative dance has recently appeared as a new form of dance. Creative dance, unlike other dances, allows and requires spontaneous creativity and improvisation and can contain elements and dance forms of any dance. In creative dance, the movements are combined and created in a completely new way. This keeps the child's creativity in its authenticity. This graduate thesis emphasizes that the essence of dance within the educational practice is not in recalling and repetition of the demonstrated movements but in encouraging children to explore the movement according to their abilities through various incentives

Light elements in stars with exoplanets

Light elements are important tracers of the internal stellar structure and kinematics. Li and Be are both burned in the stellar interiors but Be requires much higher temperatures and thus we can expect to measure Be abundances in stars which have no detectable Li in their atmospheres. The study of these elements can give us information about processes related to the angular momentum history of these stars, since rotation and angular momentum loss are important mechanisms responsible for the depletion of light elements. Additionally, if pollution has played an important role in determining the high-metal content of planet host stars, we would expect to find a similar or even higher increase in the Li and Be contents. We present Be and Li abundances in a sample of 69 stars with planets and 31 stars without known planetary companion, spanning a large range of effective temperature

Light elements in stars with exoplanets

It is well known that stars orbited by giant planets have higher abundances of heavy elements when compared with average field dwarfs. A number of studies have also addressed the possibility that light element abundances are different in these stars. In this paper we will review the present status of these studies. The most significant trends will be discusse

Light elements in stars with exoplanets

It is well known that stars orbited by giant planets have higher abundances of heavy elements when compared with average field dwarfs. A number of studies have also addressed the possibility that light element abundances are different in these stars. In this paper we will review the present status of these studies. The most significant trends will be discussed.Comment: 10 pages, 6 figures. Submitted to the proceedings of IAU symposium 268: Light elements in the universe

Genetic dissection of agronomic and quality traits based on association mapping and genomic selection approaches in durum wheat grown in Southern Spain

Climatic conditions affect the growth, development and final crop production. As wheat is of paramount importance as a staple crop in the human diet, there is a growing need to study its abiotic stress adaptation through the performance of key breeding traits. New and complementary approaches, such as genome-wide association studies (GWAS) and genomic selection (GS), are used for the dissection of different agronomic traits. The present study focused on the dissection of agronomic and quality traits of interest (initial agronomic score, yield, gluten index, sedimentation index, specific weight, whole grain protein and yellow colour) assessed in a panel of 179 durum wheat lines (Triticum durum Desf.), grown under rainfed conditions in different Mediterranean environments in Southern Spain (Andalusia). The findings show a total of 37 marker-trait associations (MTAs) which affect phenotype expression for three quality traits (specific weight, gluten and sedimentation indexes). MTAs could be mapped on the A and B durum wheat subgenomes (on chromosomes 1A, 1B, 2A, 2B and 3A) through the recently available bread wheat reference assembly (IWGSC RefSeqv1). Two of the MTAs found for quality traits (gluten index and SDS) corresponded to the known Glu-B1 and Glu-A1 loci, for which candidate genes corresponding to high molecular weight glutenin subunits could be located. The GS prediction ability values obtained from the breeding materials analyzed showed promising results for traits as grain protein content, sedimentation and gluten indexes, which can be used in plant breeding programs.Junta de Andalucía (Andalusian Regional Government) P12- AGR-0482FEDER P12- AGR-0482MINECO (Spanish Ministry of Economy, Industry and Competitiveness) AGL2016-77149-C2-1-