15 documents found, page 1 of 2
Geochemistry and Mineralogy of Auriferous Tailings and Their Potential for Reus...
Lemos, M.; Valente, T.; Marinho Reis, P.; Fonseca, R.; Pantaleão, J.P.; Guabiroba, F.; Gregorio Filho, J.; Magalhães, M.; Afonseca, B.; Silva, A.R.Since the mid-nineteenth century, gold ores, mainly hosted in sulfides, have been processed at metallurgical plants located in Nova Lima, Brazil. The generated wastes have been accumulated over the years in tailings dams or in piles. These materials represent wasted from old circuits, as well as from plants still in production. In this study, geochemical, mineralogical, 3D modelling, and metallurgical analyses ...
Hydrochemistry, Elements Distribution and Their Potential Recoveries in Gold Me...
Lemos, M.; Valente, T.; Marinho Reis, P.; Braga, A.S.; Fonseca, R.; Guabiroba, F.; Mata Filho, J.G.; Magalhães, M.F.; Silva, A.R.; Bhering, A.P.Recovering metals from mining wastewater is important in minimizing environmental pollution and maximizing resource efficiency. For this, a characterization step and understanding the oc-currence of metals and other compounds are essential. The present study focused on waters from different mining dams containing metals such as Au, Cu, Ni, Zn, and sulfates, located in the Iron Quadrangle region, (Brazil). The r...
Study of historical mortars from the Roman villa of Frielas (Loures, Portugal)
Galacho, Cristina; Moita, Patrícia; Ahmmed, Tanzil; Quaresma, José; Silva, A.R.The Roman villa of Frielas is an archaeological site from 3rd – 6th century AD located in Loures, Portugal. The villa is on excavation since 1997. A total of eighteen mortar samples were collected from the different structures of the villa with different functional uses (render, filler, and floor) and analyzed by a multi-analytical approach. The results revealed a similar composition of binder, while difference...
Dysbiosis, Small Intestinal Bacterial Overgrowth, and Chronic Diseases: A Trans...
Silva, A.R.; Bernardo, M.A.; Mesquita, M.F.; Patto, J.V.; Moreira, Pedro; Padrão, Patrícia; Silva, M.L.
Predatory activity of nematophagous fungi on infective larvae of Ancylostoma sp...
Carvalho, R.O.; Araújo, J.V.; Braga, F.R.; Araujo, J.M.; Silva, A.R.; Tavela, A.O.The predatory capacity of nematophagous fungi Duddingtonia flagrans (AC001), Monacrosporium thaumasium (NF34a), M. appendiculatum (CGI), M. sinense (SF53), Arthrobotrys conoides (I-40), A. cladodes (CG719) and A. robusta (I-31) on infective Ancylostoma sp. larvae (L3) was evaluated. Compared with the control without fungi there was a significant reduction (P < 0.05) of 87.02%, 82.74%, 47.93%, 60.49%, 76.89%, 71...
Optimizing protease production from an isolate of the nematophagous fungus Dudd...
Braga, F.R.; Araújo, J.V.; Soares, F.E.F.; Araujo, J.M.; Genier, H.L.A.; Silva, A.R.; Carvalho, R.O.; Queiroz, J.H.; Ferreira, S.R.Protease production from Duddingtonia flagrans (isolate AC001) was optimized and the larvicidal activity of the enzymatic extract was evaluated on infective horse cyathostomin larvae (L3). Duddingtonia flagrans was grown in liquid medium with eight different variables: glucose, casein, bibasic potassium phosphate (K 2 HPO 4 ), magnesium sulphate (MgSO 4 ), zinc sulphate (ZnSO 4 ), ferrous sulphate (FeSO 4 ), co...
Ovicidal activity of different concentrations of Pochonia chlamydosporia chlamy...
Braga, F.R.; Silva, A.R.; Carvalho, R.O.; Araújo, J.V.; Pinto, P.S.A.Three concentrations of chlamydospores of the nematophagous fungus Pochonia chlamydosporia (1000, 10,000 and 20,000 per Petri dish) were evaluated in vitro on Taenia taeniaeformis eggs. Chlamydospores at each concentration were cultured in two different media: 2% water-agar (2%WA) and 2% corn-meal-agar (2%CMA). Taenia taeniaeformis eggs were plated in each chlamydospore concentration in 2%WA and 2%CMA (treated ...
Comparative analysis of destruction of the infective forms of Trichuris trichiu...
Silva, A.R.; Araujo, J.V.; Braga, F.R.; Benjamim, L.A.; Souza, D.L.; Carvalho, R.O.The present study aimed to demonstrate by scanning electron microscopy (SEM) the in vitro predatory activity of nematophagous fungi Pochonia chlamydosporia (VC1 and VC4 isolates) Duddingtonia flagrans (AC001 isolate) and Monacrosporium thaumasium (NF34a isolate) on eggs of Trichuris trichiura and infective larvae (L3) of Haemonchus contortus. The work was divided into two experimental tests (A and B). In tests ...
Biological control of Ancylostomosis in dogs using the nematode-trapping fungus...
Carvalho, R.O.; Araújo, J.V.; Braga, F.R.; Araujo, J.M.; Silva, A.R.; Frassy, L.N.; Alves, C.D.F.; Ferreira, S.R.Parasitic nematodes Ancylostoma caninum and Ancylostoma braziliense affect dogs and cats and have great medical and veterinary importance for their high prevalence, zoonotic potential, cosmopolitan characteristic and soil contamination by eggs and larvae. In order to evaluate the efficiency of the nematophagous fungus Monacrosporium thaumasium (isolate NF34a) in the biological control of dog hookworm, 12 adult ...
Ovicidal activity of Paecilomyces lilacinus on Moniezia sp. eggs
Braga, F.R.; Araújo, J.V.; Araujo, J.M.; Carvalho, R.O.; Silva, A.R.; Campos, A.K.; Tavela, A.O.The ovicidal activity of Paecilomyces lilacinus was evaluated on Moniezia sp. eggs. Eggs of Moniezia sp. were incubated on plates with 2% agar-water inoculated with grown fungal isolates and a control treatment without fungus. After 5, 10 and 15 days post-inoculation, the eggs were removed and classified according to the following parameters: effect type 1, lytic effect without morphological damage to eggshells...