Matéria seca, pH e carboidrados sóluveis das silagens de seis genótipos de sorgo (Sorghum bicolor (L.) Moench).

Foram utilizados seis genótipos de sorgo (Sorghum bicolor (L.) Moench) de porte alto e colmo seco com o objetivo de determinar as percentagens de Matéria Seca (MS), de Carboidratos Solúveis (CHOS) e o valor de pH. As silagens foram feitas com sorgo colhido no estádio de grão leitoso/pastoso, em silos de laboratório, feitos de PVC. Os híbridos 1 e 2 são as testemunhas comerciais (BRS610 e VOLUMAX, respectivamente), enquanto que os outros quatro são novos materiais desenvolvidos pela EMBRAPA Milho e Sorgo. Foram avaliados oito períodos, sendo que um destes é a forragem antes de ensilar (PO). Os silos foram abertos com 1; 3; 5; 7; 14; 28 e 56 dias de fermentação. que correspondem a P1; P2; P3; P4; P5; P6 e P7, respectivamente. Utilizou-se o teste SNK para comparação entre médias, com um delineamento experimental inteiramente ao acaso. Houve elevação do teor de MS com o processo de ensilagem. Nas silagens os valores de pH oscilaram de 3,69 a 3,98. De modo geral os híbridos de sorgo apresentaram bom padrão de fermentação, com boa classificação, que variou de boa a muito boa, quanto aos parâmetros utilizados

População de plantas e taxa de rebrota de seis cruzamentos interespecíficos de "Sorghum bicolor" e "Sorghum sudanense".

Foram avaliados o número de plantas e a taxa de rebrota de quatro híbridos experimentais e dois híbridos comerciais de sorgo com capim Sudão. Nos primeiros cortes de ambas as épocas ocorreram diferenças significativas (p<0,05) entre os híbridos quanto ao número de plantas, sendo que no primeiro corte da época 1, o híbrido ATF 54 x CMSXS 912 foi semelhante aos híbridos BRS 800 e CMSXS 156 x CMSXS 912, sendo superior aos demais híbridos. No primeiro corte da segunda época, o híbrido ATF54 x CMSXS 912 apresentou número de plantas semelhantes aos híbridos AG2501C, BRS 800 e CMSXS 157 x CMSXS 912, porém superiores aos híbridos CMSXS 156 x CMSXS 912 e CMSXS 210 x CMSXS 912. Já na segunda época de plantio, os híbridos AG2501C, BRS 800 e ATF 54 x CMSXS 912 tiveram seu número de plantas reduzido a partir do segundo corte, enquanto os híbridos CMSXS 156 X CMSXS 912, CMSXS 157 x CMSXS 912, CMSXS 210 x CMSXS 912 mantiveram o número de plantas até o segundo corte, a partir do qual também houve redução. A média do número de plantas/ha foi significativamente (p<0,05) maior na época 1, com média de 841,66 mil plantas/ha. As taxas médias de rebrota foram inferiores a 1,00, não havendo diferença entre híbridos. Não houve diferença significativa (p<0,05) para as médias de rebrota entre híbridos, com exceção do híbrido AG2501C (testemunha) que, na rebrota 1, apresentou valor superior na época 1. O híbridos analisados apresentam uma boa quantidade de plantas por hectare e ótima taxa de rebrota

Charged lepton electric dipole moments with the localized leptons and the new Higgs doublet in the two Higgs doublet model

We study the lepton electric dipole moments in the split fermion scenario, in the two Higgs doublet model, where the new Higgs scalars are localized around the origin in the extra dimension, with the help of the localizer field. We observe that the numerical value of the electron (muon, tau) electric dipole moment is at the order of the magnitude of 10^{-31} (10^{-24}, 10^{-22}) (e-cm) and this quantity is sensitive the new Higgs localization in the extra dimension.Comment: 20 pages, 7 figure

Selberg Supertrace Formula for Super Riemann Surfaces III: Bordered Super Riemann Surfaces

This paper is the third in a sequel to develop a super-analogue of the classical Selberg trace formula, the Selberg supertrace formula. It deals with bordered super Riemann surfaces. The theory of bordered super Riemann surfaces is outlined, and the corresponding Selberg supertrace formula is developed. The analytic properties of the Selberg super zeta-functions on bordered super Riemann surfaces are discussed, and super-determinants of Dirac-Laplace operators on bordered super Riemann surfaces are calculated in terms of Selberg super zeta-functions.Comment: 43 pages, amste

Assaying Total Carotenoids in Flours of Corn and Sweetpotato by Laser Photoacoustic Spectroscopy

This study describes the application of the laser photoacoustic spectroscopy (PAS) for quantification of total carotenoids (TC) in corn flours and sweetpotato flours. Overall, thirty-three different corn flours and nine sweetpotato flours were investigated. All PAS measurements were performed at room temperature using 488-nm argon laser radiation for excitation and mechanical modulation of 9 and 30 Hz. The measurements were repeated within a run and within several days or months. The UV–Vis spectrophotometry was used as the reference method. The concentration range that allows for the reliable analysis of TC spans a region from 1 to 40 mg kg−1 for corn flours and from 9 to 40 mg kg−1 for sweetpotato flours. In the case of sweetpotato flours, the quantification may extend even to 240 mg kg−1 TC. The estimated detection limit values for TC in corn and sweetpotato flours were 0.1 and 0.3 mg kg−1, respectively. The computed repeatability (n = 3–12) and intermediate precision (n = 6–28) RSD values at 9 and 30 Hz are comparable: 0.1–17.1% and 5.3–14.7% for corn flours as compared with 1.4–9.1% and 4.2–23.0% for sweetpotato flours. Our results show that PAS can be successfully used as a new analytical tool to simply and rapidly screen the flours for their nutritional potential based on the total carotenoid concentration

Project overview and update on WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope

We present an overview of and status report on the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT). WEAVE principally targets optical ground-based follow up of upcoming ground-based (LOFAR) and space-based (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2-degree prime focus field of view at the WHT, with a buffered pick-and-place positioner system hosting 1000 multi-object (MOS) fibres, 20 integral field units, or a single large IFU for each observation. The fibres are fed to a single spectrograph, with a pair of 8k(spectral) x 6k (spatial) pixel cameras, located within the WHT GHRIL enclosure on the telescope Nasmyth platform, supporting observations at R~5000 over the full 370-1000nm wavelength range in a single exposure, or a high resolution mode with limited coverage in each arm at R~20000. The project is now in the final design and early procurement phase, with commissioning at the telescope expected in 2017.Comment: 11 pages, 11 Figures, Summary of a presentation to Astronomical Telescopes and Instrumentation 201

Current State of Conservation Knowledge on Threatened Amphibian Species in Peru

This study documents the current state of conservation knowledge on threatened amphibian species in Peru. Following the International Union for the Conservation of Nature (IUCN) classification system, we considered species in the following categories: Critically Endangered, Endangered, Vulnerable, and Near Threatened. Even though only the first three categories are regarded as threatened by IUCN, we included the fourth category to make comparisons with the list of threatened species issued by the Peruvian government. We used the Global Amphibian Assessment\u27s database and the list issued in Peru for this comparison. We conducted separate field surveys in 17 regions of Peru to evaluate the presence/absence of threatened amphibian species and species that are potentially threatened. We also used the Declining Amphibian Database-DAPTF, to compare our results with previous assessments on population declines, and the World Wildlife Fund\u27s Wildfinder database, to determine in which Neotropical ecoregion each species occurs. We compiled data on 83 species, 44 of which are recognized as threatened by the IUCN and/or the Peruvian government. The remaining 39 species should be re-assessed as they face various threats. A re-evaluation of current estimates is needed as only 8% of all species recorded in Peru are recognized as threatened by the government, whereas the global estimate of threatened species is about 32%. In addition to using IUCN criteria, this re-assessment should follow national guidelines standardized in Peru and be in accordance with the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Because the habitat of almost 40% of threatened species reported herein still remains unprotected, and data on chytridiomycosis and other threats are lacking for most taxa, it is crucial to develop strategies for habitat conservation and research on disease dynamics in natural populations