The objective of this study was to assess the fermentation profile, chemical composition, aerobic stability and taxonomic diversity of corn grain silages rehydrated with water or cactus pear. Two rehydration methods were tested: corn grain silage rehydrated with water (CW) and corn grain silage rehydrated with cactus pear (CCP), each subjected to four opening times (30, 60, 90 and 120 days). The experiment employed a 2 × 4 factorial completely randomized design (two rehydration methods and four opening times) with four repetitions, units 32 experimental units. pH values were higher in water-rehydrated corn grain silage compared to cactus pear-rehydrated silage at 60 (average of 4.78 and 4.33) and 90 days (average of 4.33 and 3.83). For NH3-N, CW surpassed CCP at 30 days (average of 0.73% and 0.63%) and 60 days (average of 1.09% and 0.74%), respectively. Regarding rehydration, CCP had a higher dry matter (DM) content at 30 and 60 days, while CW showed the highest DM content at 90 and 120 days. Initially, the microbiota of CW and CCP treatments differed, primarily in the abundance of the Weissella genus, more abundant in CCP. However, from 30 to 120 days, microbiotas in all treatments became taxonomically similar, with no significant differences. Both silage experienced an increase in bacteria of the Lactobacillus genus. The use of cactus pear for rehydration in ensiling rehydrated corn grain is viable, showing superior results for fermentation profile and aerobic stability compared to water rehydration. It is recommended to open the silo after 60 days of fermentation.

Background: Most people living with dementia rely on their family members for the care and support they need. However, unpaid care can lead to multiple negative impacts on the wellbeing and mental health of carers.

Objectives: The Objectives of this study was to evaluate the effects of iSupport-Brasil (an online, psychoeducational program) on perceptions of burden and on the mental health of informal caregivers of people living with dementia.

Methods: A randomized controlled trial was carried out from January 2023 to April 2024 in Brazil. A total of 162 individuals were randomly allocated to an intervention group (IG) (n = 77) or a control group (CG) (n = 85). The IG had free access to the iSupport-Brasil platform for three months. Simultaneously, the CG participants were provided with a link to access the Brazilian Alzheimer’s Association website and a copy of the “Care Guide for Older People”, published by the Brazilian Ministry of Health. Pre- and post-intervention assessments were carried out using measures of burden (a single-item Burden Scale and the Zarit Burden Interview – ZBI), and of anxiety and depressive symptoms (Hospital Anxiety and Depression Scale - HADS).

Results: Based on an intention-to-treat analysis, a reduction in anxiety symptoms was observed for the IG (p = 0.02). Based on a per-protocol analysis, significant reductions in burden (p <0.01) and anxiety symptoms (p < 0.01) were found for the IG. No significant effects were found for depressive symptoms, although scores decreased. For the CG, the regression model indicated that, on average, burden and depressive symptoms worsened somewhat, but this result was not statistically significant.

Conclusions: The iSupport-Brasil program was effective in reducing perceptions of burden and anxiety symptoms among informal caregivers in Brazil. Therefore, we recommended that informal caregivers of people living with dementia use this program to help them broaden their interpersonal coping strategies and improve their emotional health, in addition to using mainstream long-term care support services.

The GINI project investigates the dynamics of inequality among populations over the long term by synthesising global archaeological housing data. This project brings archaeologists together from around the world to assess hypotheses concerning the causes and consequences of inequality that are of relevance to contemporary societies globally.

Fossil fuels are of utmost importance to the world we live in today. However, their use can cause major impacts on the environment, especially on water resources. In this regard, algae have been intensively used as a strategy for remediation and monitoring of environmental pollution due to its efficient absorption of contaminants. In this work, samples of seaweed collected in Niterói/RJ—contaminated with kerosene and diesel—were analyzed by radiocarbon (14C) accelerator mass spectrometry (AMS) and by n-alkane quantification with gas chromatography to evaluate bioaccumulation in function of the dosage of contaminants. The biogenic content measured by radiocarbon analysis resulted in 95.6% for algae contaminated with 10 mL of kerosene and 67.6% for algae contaminated with 10 mL of diesel. The maximum intensity of n-C17 n-alkane in algae with 5 mL, 10 mL, and 15 mL of diesel was 768.2, 1878.1, and 5699.2 ng.g-1, respectively. While the maximum concentration of n-C27 in algae with 5 mL, 10 mL and 15 mL of kerosene was 3.3, 35.9, and 150.3 ng.g-1. We concluded that, for both contaminants, their incorporation into algae increases as the contamination dosage increases, making this methodology an effective technique for monitoring and remediation of urban aquatic ecosystems.

Human neurocysticercosis (NCC) is a worldwide neglected disease caused by Taenia solium metacestode and responsible for various complications and neurological disorders. This study aimed to evaluate the use of specific immunoglobulin Y (IgY) produced by laying hens immunized with a hydrophobic fraction of Taenia crassiceps metacestodes (hFTc) in NCC diagnosis. Egg yolk IgY antibodies were fractionated, purified and characterized. Enzyme-linked immunosorbent assay (ELISA) was carried out to evaluate the production kinetics and avidity maturation of anti-hFTc IgY antibodies throughout the IgY obtention process. Antigen recognition tests were carried out by Western blotting and immunofluorescence antibody test using purified and specific anti-hFTc IgY antibodies for detection of parasitic antigens of T. crassiceps and T. solium metacestodes. Sandwich ELISA was performed to detect circulating immune complexes formed by IgG and parasitic antigens in human sera. The results showed high diagnostic values (93.2% sensitivity and 94.3% specificity) for immune complexes detection in human sera with confirmed NCC. In conclusion, specific IgY antibodies produced from immunized hens with hFTc antigens were efficient to detect T. solium immune complexes in human sera, being an innovative and potential tool for NCC immunodiagnosis.

Richard Wagner wrote in 1852 that in settling on the theme of the phantom ship he had entered ‘upon a new path, that of Revolution against our modern Public Art’, that is, grand opéra. Wagner’s revolution has often been described in light of the poetics of return and homecoming that contributed a new sense of identity to (German) opera. The present article is written against the grain of this conviction, and highlights the cosmopolitan career of the phantom ship and of the vernacular art forms – the nautical theatre and the phantasmagoria – that maintained the seafaring image at the forefront of the liberal imagination, first in Britain, and then in Paris, where Wagner arguably seized on it. Specifically, it explores the significance of ‘apparitional images’ to mid-nineteenth-century opera and Wagner’s turn to a regime of modern spectacle, inspired by the art of phantasmagoria, in Der fliegende Holländer.

The objectives were to assess the following: (1) the relationship between sward height and chemical composition of four pasture types in association with grazing behaviour and body condition score (BCS) of dairy cows, and (2) the possibility of developing predictive equations of the nutrient intake and grazing behaviour within a continued grazing system. Pasture type had a significant (p < 0.01) effect on nutrient supply from January to June for all pastures investigated. Ryegrass–white clover pasture (RW) had the highest metabolizable protein and metabolizable energy, followed by kikuyu pasture (KP), which was significantly (p < 0.001) higher than native pastures 1 and 2 (NP1 and NP2). The highest values for effective grazing time, bite rate and BCS were found when dairy cows grazed RW followed by KP, NP2 and NP1. The results suggested that pasture type and sward height influenced grazing behaviour and BCS of dairy cows during the dry season. In the same vein, RW showed higher effective grazing time, bite rate, nutrient intake and BCS than the other three pastures suggesting that RW pastures that appear to be more expensive than native pastures could result in superior cow performance.

During the research programme conducted on the OV Puerto Deseado in the summers of 2011 and 2013, 36 stations were sampled using a demersal net at depths between 53–590 m in the Antarctic Peninsula and South Shetland Islands. A total 3378 fish specimens belonging to 36 species were recorded. Notothenidae was the best-represented family in species number, with Lepidonotothen nudifrons, L. larseni and Trematomus scotti being the most numerous species. Of the fish assemblages, 20% of the species were considered as dominant, 10% as common, 13% as occasional and 57% as rare. Six groups (and two sub-groups) were obtained by the ordination diagram based on geographical location: group 1=Gerlache Strait, group 2=Deception Islands, group 3=Biscoe Island, group 4=between Elephant and King George islands, group 5=northern Antarctic Peninsula, and group 6=South Shetland Islands, with sub-groups 6a shallower South Shetland Islands and 6b deeper South Shetland Islands. Sampling depth and water temperature significantly explained the spatial pattern. A latitudinal pattern of decreasing abundance from north-east to south-west was found in L. larseni and the opposite in T. scotti. The predictability of fish composition in the assemblages’ areas could be a useful tool for ecosystem-based management.

Knowledge on parthenogenetic activation of oocytes is important to improve the efficiency of nuclear transfer (NT) and intracytoplasmic sperm injection (ICSI) because artificial activation of oocyte (AOA) is an essential step to achieve embryo production. Although different procedures for AOA have been established, the efficiency of in vitro production of embryos remains low, especially in equines and Bos taurus bovines. In an attempt to improve the techniques of NT and ICSI in bovine and equine species, we tested different combinations of drugs that had different mechanisms of action for the parthenogenetic activation of oocytes in these animals. The oocytes were collected, in vitro matured for 24 to 30 h and activated artificially, in the presence of low or high concentrations of calcium, with combinations of calcium ionophore (ionomycin) with cycloheximide, roscovitine, strontium, or 6-dimethylaminopurine (6-DMAP). For assessment of activation rates, oocytes were stained with Hoechst 33342 and observed under an inverted microscope. We showed that all combinations of drugs were equally efficient in activating bovine oocytes, with the best results obtained when high concentrations of calcium were adopted. For equine oocytes, high concentrations of calcium were not beneficial for the parthenogenetic activation and the combination of ionomycin with either 6-DMAP or roscovitine was effective in inducing artificial activation of oocytes. We believe that our preliminary findings provide some clues for the development of a better AOA protocol to be used with these species.

Developmental contexts have been studied in terms of systems of beliefs and practices, treated as part of general cultural models. This paper aims to describe aspects of parenting cultural models of a group of 200 primiparous Brazilian mothers from Rio de Janeiro, who had children less than 44 months old. Mothers answered the Socialization Goals Interview (SGI), and an adapted version of an inventory of beliefs about practices of care, developed by M. Suizzo. Answers to the SGI were coded in five categories and their subcategories: Self-maximization (SM), Self-control (SC), Lovingness (L), Proper demeanor (PD) and Decency (D), and scores in each of them were calculated. A factor analysis indicated three dimensions of mothers' beliefs about practices: Awaking and exposing the child to diverse stimuli (Stimulation), ensuring the Proper presentation of the child and Responding to and bonding to the child. Data was further analyzed in terms of subcategories of SM and D and of the relation to the factors mothers' educational level and sex of their child. Results showed that mothers from Rio de Janeiro share a cultural model of autonomy for their children, but that they also believe in the importance of their relationship to others.

A mythical giant, a Malagasy slave, a song, an accomplished baritone, an outraged critic; these seemingly incompatible figures are bound together in the Paris premiere of Giacomo Meyerbeer's L'Africaine in 1865. They are the fundamental elements of my story of the opera's third act, a narrative web binding together early modern nautical history, epic poetry, grand-opera dramaturgy, and the nineteenth-century politics of operatic performance and listening in an exploration of how the opera's rather fictionalised account of Vasco da Gama's first sea voyage to India five centuries ago bears witness to the strength of the historicist project in grand opera.

After years spent reflecting on Western imperial practices, critic Edward Said wrote that Giuseppe Verdi's Aida is ‘a kind of curatorial art’, a work

whose rigorous and unbending frame recall[s], with relentless mortuary logic, a precise historical moment and a specifically dated aesthetic form, an imperial spectacle designed to alienate and impress an almost exclusively European audience.