Avaliação da qualidade tecnológica do feijão armazenado em Silobolsa.

O objetivo principal deste trabalho foi verificar a qualidade culinária e o aspecto visual do feijão armazenado em SILOBOLSA por um período de quatro meses e compará-lo com os grãos armazenados em ambiente natural. Adicionalmente, o produto foi avaliado como semente.bitstream/CNPAF/25025/1/comt_116.pd

Diversity and composition of the microbiome associated with eggs of the Southern green stinkbug, Nezara viridula (Hemiptera: Pentatomidae)

Although microbial communities of insects from larval to adult stage have been increasingly investigated in recent years, little is still known about the diversity and composition of egg-associated microbiomes. In this study, we used high-throughput amplicon sequencing and quantitative PCR to get a better understanding of the microbiome of insect eggs and how they are established using the Southern green stinkbug Nezara viridula (L.) (Hemiptera: Pentatomidae) as a study object. First, to determine the bacterial community composition, egg masses from two natural populations in Belgium and Italy were examined. Subsequently, microbial community establishment was assessed by studying stinkbug eggs of different ages obtained from laboratory strains (unlaid eggs collected from the ovaries, eggs less than 24 h old, and eggs collected 4 days after oviposition). Both the external and internal egg-associated microbiomes were analyzed by investigating egg washes and surface-sterilized washed eggs, respectively. Eggs from the ovaries were completely devoid of bacteria, indicating that egg-associated bacteria were deposited on the eggs during or after oviposition. The bacterial diversity of deposited eggs was very low, with on average 6.1 zero-radius operational taxonomic units (zOTUs) in the external microbiome and 1.2 zOTUs in internal samples of egg masses collected from the field. Bacterial community composition and density did not change significantly over time, suggesting limited bacterial growth. A Pantoea-like symbiont previously found in the midgut of N. viridula was found in every sample and generally occurred at high relative and absolute densities, especially in the internal egg samples. Additionally, some eggs harbored a Sodalis symbiont, which has previously been found in the abdomen of several insects, but so far not in N. viridula populations. We conclude that the egg-associated bacterial microbiome of N. viridula is species-poor and dominated by a few symbionts, particularly the species-specific obligate Pantoea-like symbiont

Optix and cortex/ivory/mir-193 again: the repeated use of two mimicry hotspot loci

Peer reviewed: TruePublication status: PublishedFunder: American Society of Naturalists; FundRef: http://dx.doi.org/10.13039/100010401Funder: Varley-Gradwell Travelling FellowshipFunder: Natural Environment Research Council; FundRef: http://dx.doi.org/10.13039/501100000270Funder: St. John’s CollegeFunder: Royal Society; FundRef: http://dx.doi.org/10.13039/501100000288Funder: Australian Research Council; FundRef: http://dx.doi.org/10.13039/501100000923Funder: Cambridge Trust; FundRef: http://dx.doi.org/10.13039/501100003343The extent to which evolution is repeatable has been a debated topic among evolutionary biologists. Although rewinding the tape of life perhaps would not lead to the same outcome every time, repeated evolution of analogous genes for similar functions has been extensively reported. Wing phenotypes of butterflies and moths have provided a wealth of examples of gene re-use, with certain ‘hotspot loci’ controlling wing patterns across diverse taxa. Here, we present an example of convergent evolution in the molecular genetic basis of Batesian wing mimicry in two Hypolimnas butterfly species. We show that mimicry is controlled by variation near cortex/ivory/mir-193, a known butterfly hotspot locus. By dissecting the genetic architecture of mimicry in Hypolimnas misippus and Hypolimnas bolina, we present evidence that distinct non-coding regions control the development of white pattern elements in the forewing and hindwing of the two species, suggesting independent evolution, and that no structural variation is found at the locus. Finally, we also show that orange coloration in H. bolina is associated with optix, a well-known patterning gene. Overall, our study once again implicates variation near the hotspot loci cortex/ivory/mir-193 and optix in butterfly wing mimicry and thereby highlights the repeatability of adaptive evolution

STAR: A UNIVERSITY STUDENTS DROP TOWER EXPERIMENT

The use of tethers in space has been proposed to carry out several different tasks, including, for instance, electrodynamic drag devices, spacecraft tugging, novel docking systems. Tether deployers developed and flown so far demonstrated lack of engineering knowledge during tether operations; in particular, a tether retrieval has never been performed by small automated spacecraft. In this context, Space Tether Automatic Retrieval (STAR) is an experiment carried out by five engineering students from the University of Padua, whose main objective was to design, build and test in microgravity a novel concept of space tether deployer with retrieval capability. The experiment has been selected by the Education Office of the European Space Agency for the 2016 edition of the Drop Your Thesis! educational programme. The Drop Your Thesis! programme offers university students the unique opportunity to perform scientific experiments in microgravity conditions using the Bremen Drop Tower facility operated by ZARM. To demonstrate the functioning of the deployer, a braided line has been successfully deployed and retrieved in each of the five tests that were conducted in microgravity conditions. The prototype of the deployer is inspired to passive deployers already developed for past space missions, such as SEDS-I and SEDS-II, integrated with an innovative reeling device to enable the tether retrieval capability. More specifically, the experimental setup was composed by four main subsystems: a spring-based launch device to start the deployment phase; a length and length rate measurement system to measure the amount of deployed tether by means of optical sensors; a dedicated active braking mechanism to control the tether deployment velocity by means of a feedback control on length-vs.-time reference trajectory; and a retrieval system to eventually rewind the tether around the spool and reset the system to the initial state. This paper presents motivation, conception and microgravity testing of the Space Tether Automatic Retrieval Experiment, and describes the educational return of the project

A multi-lander New Frontiers mission concept study for Enceladus: SILENUS

Enceladus, with its subsurface ocean, is amongst the top priority targets in the search for life beyond Earth. Following on discoveries from the Cassini mission that Enceladus possesses a global subsurface ocean containing salt and organic compounds, there are many unconstrained properties of the ocean and ice shell that must be investigated to further assess the habitability of Enceladus and begin the search for biosignatures on Enceladus. In this paper, we present a concept study for a New Frontiers class multi-lander and orbiter mission to Enceladus that investigates if there is or ever was a habitable environment on Enceladus. The mission architecture includes an orbiter for detailed chemical analysis of material erupted from Enceladus’ plumes and four impact landers for geophysical measurements. As part of our mission concept study, we explore key trades for orbital and surface science, as well as assess the scientific potential and hazards of candidate landing sites on Enceladus. The novelty of our mission architecture and consideration of both orbital and surface science elements makes this work directly relevant to a broad range of potential future mission architectures under consideration, such as those identified in the 2023–2032 Planetary Science and Astrobiology Decadal Survey. Copyright © 2022 Nathan, Balachandran, Cappuccio, Di, Doerksen, Gloder, Li, Massarweh, Peev, Santra, Rovira-Navarro and Limonchik.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

ASCenSIon: An Innovative Network to Train the Space Access Leaders of Tomorrow

The trend towards smaller satellites and mega-constellations has enormously changed the space sector and its uti-lisation in the last decades, allowing new players to enter the market and to introduce stringent requirements to enable a variety of novel applications. Alongside, also the launcher market is undergoing a transformation epoch: the devel-opment, manufacturing and integration of launcher systems is being shifted from the hands of governmental institutions to commercial industry. Moreover, nations like Unites States, China, India and New Zealand are increasing the com-petition and pressure on Europe, urging the goal to ensure European autonomy in accessing and using space in a safe and secure environment. Europe does not only need innovations, but primarily a new generation of engineers, capable of understanding the full complexity of launcher development and trained to create and realise the necessary innova-tions. In this context, ASCenSIon is a multidisciplinary training programme involving 15 Early Stage Researchers (ESRs) from anywhere in the world, focused on several specific areas of cutting-edge space access research, particu-larly on launcher systems that are (partially) reusable and capable of injecting multiple payloads into multiple orbits. The network aims to identify and advance critical technologies in the space access field, and prove their feasibility. ASCenSIon, whose acronym stands for “Advancing Space Access Capabilities –Reusability and Multiple Satellite Injection”, is a consortium of 11 beneficiaries and 17 partners across Europe, eager to contribute to the establishment of an ecologically and economically sustainable space access for Europe, oriented towards user needs. Unlike other single-aspect research projects, the core objective of ASCenSIon is not only to train 15 PhD students to become excel-lent specialists in their respective field, but also to provide them a thorough understanding of the complexity, multidis-ciplinary and internationality of launcher development, in order to become leaders in the European effort of utilising space. This will be achieved through secondments, events and lessons from experts, but mostly through strong inter-connections among the ESRs, who will work on Individual Research Projects with a multi-disciplinal and multi-sec-toral approach. This paper aims to provide an overview of ASCenSIon programme. Its values and core objectives will be introduced, together with the innovative aspects and content structure. An overview of the research methodology and recruitment strategy will be given, with a particular focus on the contributions and synergies of all participating organisations, core of such a novel training approach

ASCenSIon: An Innovative Network to Train the Space Access Leaders of Tomorrow

reserved15simixedGloder, A.; Apel, U.; Bianchi, D.; Bonetti, D.; Deeken, J.; Hendrick, P.; Hijlkema, J.; Lavagna, M.; Pasini, A.; Prevereaud, Y.; Sippel, M.; Stoll, E.; Waxenegger-Wilfing, G.; Tajmar, M.; Bach, C.Gloder, A.; Apel, U.; Bianchi, D.; Bonetti, D.; Deeken, J.; Hendrick, P.; Hijlkema, J.; Lavagna, M.; Pasini, A.; Prevereaud, Y.; Sippel, M.; Stoll, E.; Waxenegger-Wilfing, G.; Tajmar, M.; Bach, C

ASCenSIon: An innovative network to train the space access leaders of tomorrow

The trend towards smaller satellites and mega-constellations has enormously changed the space sector and its utilisation in the last decades, allowing new players to enter the market and to introduce stringent requirements to enable a variety of novel applications. Alongside, also the launcher market is undergoing a transformation epoch: the development, manufacturing and integration of launcher systems is being shifted from the hands of governmental institutions to commercial industry. Moreover, nations like Unites States, China, India and New Zealand are increasing the competition and pressure on Europe, urging the goal to ensure European autonomy in accessing and using space in a safe and secure environment. Europe does not only need innovations, but primarily a new generation of engineers, capable of understanding the full complexity of launcher development and trained to create and realise the necessary innovations. In this context, ASCenSIon is a multidisciplinary training programme involving 15 Early Stage Researchers (ESRs) from anywhere in the world, focused on several specific areas of cutting-edge space access research, particularly on launcher systems that are (partially) reusable and capable of injecting multiple payloads into multiple orbits. The network aims to identify and advance critical technologies in the space access field, and prove their feasibility. ASCenSIon, whose acronym stands for “Advancing Space Access Capabilities -Reusability and Multiple Satellite Injection”, is a consortium of 11 beneficiaries and 17 partners across Europe, eager to contribute to the establishment of an ecologically and economically sustainable space access for Europe, oriented towards user needs. Unlike other single-aspect research projects, the core objective of ASCenSIon is not only to train 15 PhD students to become excellent specialists in their respective field, but also to provide them a thorough understanding of the complexity, multidisciplinary and internationality of launcher development, in order to become leaders in the European effort of utilising space. This will be achieved through secondments, events and lessons from experts, but mostly through strong interconnections among the ESRs, who will work on Individual Research Projects with a multi-disciplinal and multi-sectoral approach. This paper aims to provide an overview of ASCenSIon programme. Its values and core objectives will be introduced, together with the innovative aspects and content structure. An overview of the research methodology and recruitment strategy will be given, with a particular focus on the contributions and synergies of all participating organisations, core of such a novel training approach