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1.
Stars and gas in galaxies, hot intracluster medium, and intergalactic photo-ionized gas make up at most half of the baryons that are expected to be present in the universe. The majority of baryons are still missing and are expected to be hidden in a web of warm-hot intergalactic medium. This matter was shock-heated during the collapse of density perturbations that led to the formation of the relaxed structures that we see today. Finding the missing baryons and thereby producing a complete inventory of possibly the only detectable component of the energy-mass budget of the universe is crucial to validate or invalidate our standard cosmological model. 相似文献
2.
Radan Elvis Matias de Oliveira Giovanna Almeida Santoro Augusto Carlos da Bôaviagem Freire Fernanda Löffler Niemeyer Attademo Stella Almeida Lima Aline da Costa Bomfim Ana Bernadete Lima Fragoso Flávio José de Lima Silva Simone Almeida Gavilan Moacir Franco de Oliveira 《Anatomia, histologia, embryologia》2020,49(1):25-30
The aortic arrangement is an important structure associated with the maintenance of homeostasis. Based on this information, this study was conducted to describe the collateral arteries of the aortic arch of Antillean manatee and define the standard model for the species. Three specimens, an adult male, adult female and a male neonate, all strandings on the coast of the state of Rio Grande do Norte, Brazil, were used. The study was performed in the Laboratory of Morphophysiology of Vertebrates of the Federal University of Rio Grande do Norte, where in situ photographs were taken to demonstrate their topography. Subsequently, their hearts were removed and fixed in 10% formaldehyde and after 72 hr were dissected and analysed, obtaining schematic drawings and photographs of the vascular arrangement. The aortic arch was represented by three collateral arteries identified as the brachiocephalic trunk, left common carotid artery and left subclavian artery. This arrangement was similar to that found for other sirenians, and yet, for other mammals like hooded seal, murine, margarita island capuchin, black-handed tamarin, Mongolian gerbil and human. The morphological similarity presented in this study with different species of mammals, including humans, may contribute valuable information from an evolutionary point of view. 相似文献
3.
Collateral arteries of the aortic arch of the red-rumped agouti (Dasyprocta leporina Linnaeus, 1758)
Radan Elvis Matias de Oliveira Herson da Silva Costa Hélio Noberto de Araújo Júnior Igor Renno Guimarães Lopes Paulo Mateus Alves Lopes João Vitor de Oliveira Gurgel Moacir Franco de Oliveira 《Anatomia, histologia, embryologia》2020,49(3):417-424
Detailed knowledge of the arterial system is an important prerequisite when interpreting experimental data in research, as well as in the diagnosis of cardiovascular disease using imaging techniques such as Doppler echocardiography and contrast radiography. Thus, considering the importance of the aortic arrangement, the objective of this study was to describe the collateral arteries of the aortic arch of agoutis in order to establish the standard model, and therefore contribute to studies involving research related to heart disease, and produce information for a more accurate diagnosis in complementary imaging examinations. In this study, 14 adult animals were used, comprising eight males and six females. The vascular system was washed with 0.9% aqueous saline solution and perfused with Neoprene 450 latex coloured with yellow or red pigment, which was subsequently dissected and analysed. One male animal was used for the digital contrast radiography technique perfused with a liquid barium sulphate solution (Bariogel®) (1 g/ml) and Neoprene 450 latex, both diluted 1/3. The aortic arch of the agouti presented with only the brachiocephalic trunk as collateral branch in all the animals studied. Thus, agouti falls into type 1 for mammalian aortic arch vascular arrangements. 相似文献
4.
J. Trinette Van Marle Cees Van Dijk Alphons G. J. Voragen Elvis S. A. Biekman 《Potato Research》1994,37(2):183-195
Summary The potato cultivars Nicola and Irene were investigated with respect to cell sloughing, specific cell surface area, release
of pectic material and transfer of ions using a model cooking study. Both cell sloughing and the release of pectic material
were higher for the mealy-cooking cultivar Irene. As the respective cell size distributions measured were the same for both
cultivars, the difference in release of pectic material could not be explained by a difference in the specific cell surface
areas between the cultivars. Additionally, it was recorded that during cooking only 20% of the calcium present in non-cooked
tissue was transferred into the cooking medium, whereas more than 70% of potassium and citrate were transferred. The ratios
Da.citr2−/Da.K+ and Da.Ca2+/Da.K+ for water and cooked potato tissue revealed that in water, potassium ions diffused faster than citrate and calcium ions.
However, in cooked potato tissue both citrate and calcium ions diffused faster than potassium ions. 相似文献
5.
Bruna Rodrigues Willhelm Elvis Ticiani Karine Campagnolo Gabriella Borba de Oliveira Karine de Mattos Camilo Andrés Peña Bello Felipe Ledur Ongaratto Paula Rodriguez-Villamil Luciana Relly Juliana Paula Martins Alves Davide Rondina José Luiz Rigo Rodrigues Marcelo Bertolini 《Reproduction in domestic animals》2021,56(6):857-863
6.
Sali Atanga Ndindeng Alphonse Candia Delphine Lamare Mapiemfu Vohangisoa Rakotomalala Nahemiah Danbaba Kurahisha Kulwa Paul Houssou Sow Mohammed Ousman M. Jarju Salimata S. Coulibaly Elvis A. Baidoo Jean Moreira Koichi Futakuchi 《水稻科学》2021,28(3):212-216
正Data on rice harvest and postharvest loss in Sub-Sahara Africa(SSA) is scanty making it difficult for stakeholders to appreciate the loss and set priority areas for loss reduction along the value chain. To address this problem, a protocol was developed and validated for postharvest loss(PHL) quantification in SSA. Quantitative losses at each segment were determined by field measurements. 相似文献
7.
Leila Shafea Julia Yap Nicolas Beriot Vincent J. M. N. L. Felde Elvis D. Okoffo Christian Ebere Enyoh Stephan Peth 《植物养料与土壤学杂志》2023,186(1):5-22
Contamination of soils in agroecosystems with microplastics (MPs) is of increasing concern. The contamination of the environment/farmland soils with MPs (1 µm to 5 mm sized particles) and nanoplastics (NPs; <1 µm sized particles) is causing numerous effects on ecological soil functions and human health. MPs enter the soil via several sources, either from intentional plastic use (e.g., plastic mulch, plastic greenhouses, plastic-coated products) or indirectly from the input of sewage sludge, compost, or irrigation water that is contaminated with plastic. Once in the soil, plastic debris can have various impacts such as changes in soil functions and physicochemical properties and it affects soil organisms due to its toxic behavior. This review paper describes the different effects of plastic waste to understand the consequences for agricultural productivity. Furthermore, we identify knowledge gaps and highlight the required approaches, indicating future research directions on sources, transport, and fate of MPs in soils to improve our understanding of various unspecified abiotic and biotic impacts of MP pollution in agroecosystems. 相似文献
8.
Maria Gabriela Xavier Oliveira Leandro Nogueira Pressinotti Giovane Spínola Carvalho Mirela Caroline Vilela Oliveira Luisa Zanolli Moreno Carlos Emilio Cabrera Matajira Alessandro Spínola Bergamo Victor Manuel Aleixo Alexandre Caixeta Veiga Elvis de Souza Corsino Ana Paula Guarnieri Christ Maria Inês Zanolli Sato Andrea Micke Moreno Terezinha Knöbl 《Tropical animal health and production》2017,49(4):777-782
The aim of this study was to perform the identification and molecular characterization of Arcobacter cryaerophilus and Arcobacter butzleri isolated from caiman (Caiman yacare), kept at a production farm, in Brazil. Forty fecal samples were analyzed. After isolation and identification, 21/40 strains of A. butzleri and 19/40 strains of A. cryaerophilus were subjected to PCR for potential virulence gene detection. The results of the PCR showed 38/40 strains positive for the cadF, cj1349, ciaB, and tlyA genes, 39/40 strains positive for the pldA gene, and 40/40 strains positive for the mviN gene. None of the strains presented the irgA gene. Hemagglutinin (hecA gene) and hemolysin (hecB) genes were detected in 21/40 and 16/40 strains, respectively. The SE-AFLP showed a great genetic diversity, but some clonally groups were disseminated in various tanks. These data reveal that the strains presented the same virulence traits described from Arcobacter isolated from food-borne disease in humans. 相似文献
9.
Wassim Habib Carine Saab Robert Malek Louis Kattoura Caterina Rotolo Elvis Gerges Farah Baroudy Stefania Pollastro Francesco Faretra Rita M. De Miccolis Angelini 《Plant pathology》2020,69(8):1453-1468
Tomato and strawberry are the most important protected crops in Lebanon and are seriously affected by grey mould disease, caused by Botrytis cinerea. In the present study, the fungicide sensitivity assays revealed medium to high frequencies of B. cinerea isolates resistant to benzimidazoles, dicarboximides, and anilinopyrimidines on tomato and strawberry. Fludioxonil- and boscalid-resistant mutants were uncommonly found at generally low frequency on both crops. Resistance to fenhexamid was detected in only one site on tomato but in most sites on strawberry with high frequencies, and the occurrence of resistance to QoI fungicides was ascertained on both crops. The majority of the tested isolates (>90%) exhibited multiple fungicide resistance, and isolates resistant to the seven antibotrydial fungicide classes were detected on strawberry in three locations. A high level of resistance was shown by B. cinerea mutants resistant to boscalid, fenhexamid, and QoI fungicides, while two levels of moderate and high resistance to anilinopyrimidines were identified. Genetic analysis revealed point mutations in the target genes commonly associated with resistance in B. cinerea isolates, with all mutants resistant to dicarboximides, fenhexamid, boscalid, and QoI fungicides carrying single-nucleotide polymorphims in BcOS1 (I365S/N, Q369P, and N373S), Erg27 (F412V/I), SdhB (H272R/Y), and cytb (G143A) genes, respectively. The general incorrect use of fungicides has caused the development and spread of fungicide resistance as a widespread phenomenon on protected tomato and strawberry in Lebanon. The implementation of appropriate antiresistance strategies is highly recommended. 相似文献