LaMMos - Latching Mechanism based on Motorized-screw for Reconfigurable Robots and Exoskeleton Suits

Reconfigurable robots refer to a category of robots that their components (individual joints and links) can be assembled in multiple configurations and geometries. Most of existing latching mechanisms are based on physical tools such as hooks, cages or magnets, which limit the payload capacity. Therefore, robots re- quire a latching mechanism which can help to reconfigure itself without sacrificing the payload capability. This paper presents a latching mechanism based on the flexible screw attaching principle. In which, actuators are used to move the robot links and joints while connecting them with a motorized-screw and dis- connecting them by unfastening the screw. The brackets used in our mechanism configuration helps to hold maximum force up to 5000N. The LaMMos - Latching Mechanism based on Motorized- screw has been applied to the DeWaLoP - Developing Water Loss Prevention in-pipe robot. It helps the robot to shrink its body to crawl into the pipe with minimum diameter, by recon- figuring the leg positions. And it helps to recover the legs positions to original status once the robot is inside the pipe. Also, LaMMos add stiffness to the robot legs by dynamically integrate them to the structure. Additionally, we present an application of the LaMMos mechanism to exoskeleton suits, for easing the mo- tors from the joints when carrying heavy weights for long periods of time. This mechanism offers many interesting opportunities for robotics research in terms of functionality, pay- load and size.Comment: 14 pages, 15 figure

Influence of Altitude on the indirect Analysis of α-amylase Content on Wheat Flours

The objective of this study was to verify the influence of altitude on the indirect analysis of α-amylase content on wheat flours. The experimental designused was completely randomized, with eight treatments and three repetitions. The treatments consisted of the analysis of the falling number from flours of four wheat classes (basic, domestic, bread and improver) on the elevations zero, 412, 540, 761, 934, 975, 1,040 and 1,095 meters. After the trial results, under the correction of the averages above 600 meters of elevation, it was verified that there was a significant difference between the results of distinct altitudes, for the four wheat classes. When a polynomial regression is applied, for the values without correction, it was obtained that aquadratic regression equation correlates the falling number values with altitude; however, the coefficient of determination was very low, highlighting the major influence of the different equipments that were used to measure the falling number instead of the different altitudes

The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period

peer reviewedWe report six stellar occultations by Phoebe (Saturn IX), an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 6 event was the first stellar occultation by an irregular satellite ever observed. The occultation chords were compared to a 3D shape model of the satellite obtained from Cassini observations. The rotation period available in the literature led to a sub-observer point at the moment of the observed occultations where the chords could not fit the 3D model. A procedure was developed to identify the correct sub-observer longitude. It allowed us to obtain the rotation period with improved precision compared to the currently known value from literature. We show that the difference between the observed and the predicted sub-observer longitude suggests two possible solutions for the rotation period. By comparing these values with recently observed rotational light curves and single- chord stellar occultations, we can identify the best solution for Phoebe's rotational period as 9.27365 ± 0.00002 h. From the stellar occultations, we also obtained six geocentric astrometric positions in the ICRS as realized by the Gaia DR2 with uncertainties at the 1-mas level

Acúmulo de forragem em pastagens acometidas pela síndrome da morte do braquiarão.

Com intenso desenvolvimento da síndrome da morte do capim Braquirão (Brachiaria brizantha cv. Marandu), objetivou-se avaliar o acúmulo de forragem nos cultivares Mulato II, Estrela roxa, Llanero, Marandu, Massai, Mombaça, Piatã, Ruziziensis, Tanzania e Xaraés em áreas de incidência. O delineamento experimental foi em blocos inteiramente casualizado com três repetições, conduzido em Alta Floresta ? MT. Os dados foram analisados utilizando o método de modelos mistos com estrutura paramétrica especial na matriz de covariância, através do procedimento MIXED do software estatístico SAS. O acúmulo de forragem variou entre cultivares (P = 0,0028) e época do ano, obtendo maior produção no verão em relação ao outono (P<0,0001). Destacou-se o capim Mombaça com o maior acúmulo e média de 3310 kg de MS ha-1 a cada ciclo de corte. Os cultivares Estrela, Marandu, Massai, Ruziziensis e Tanzânia apresentaram os menores acúmulos de forragem no período avaliado. Os cultivares Marandu, Piatã e Mulato II são forrageiras que não resistem ao excesso de umidade apresentando sintomas de morte. O Tanzânia foi acometido pela mancha foliar de Helminthosporium carbonum e não é indicada para substituição em pastagens com SMB. Os cultivares Mombaça, Xaraés, Massai, Ruziziensis, Llaneiro, Estrela roxa não apresentaram sintomas de deficiência em decorrência ao excesso de umidade, podendo ser alternativas em substituição ao Marandu em pastagens acometidas pela SMB

DOENÇAS DIAGNOSTICADAS PELO LABORATÓRIO DE PATOLOGIA VETERINÁRIA EM 2017

Este trabalho apresenta a casuística de diagnósticos no ano de 2017 do Laboratório de Patologia Veterinária do IFC Campus Concórdia. Foram 230 diagnósticos em bovinos, 32 em ovinos e 93 em suínos, totalizando 355. Destes, 247 (69,6%) foram através de necropsias e 108 (30,4%) através de amostras formolizadas enviadas por veterinários. Em bovinos as doenças mais incidentes foram anaplasmose e babesiose com 11 casos cada (4,8%); endocardite com 7 casos (3,0%); hemoncose com 6 casos (2,6%) e retículo pericardite traumática com 6 casos (2,6%). Já em ovinos foi hemoncose com 5 casos (15,7%) e suínos doença de Glässer e colibacilose com 6 casos cada (6,4%).