Assessment of clayey materials from Santa Maria (Azores, Portugal) for preparation of peloids

Clay Minerals ◽  
2019 ◽  
Vol 54 (3) ◽  
pp. 299-307 ◽  
Author(s):  
Ângela Cerqueira ◽  
Cristiana Costa ◽  
Denise Terroso ◽  
Cristina Sequeira ◽  
Fernando Rocha
Keyword(s):  
Technological Properties ◽  
Medicinal Products ◽  
Natural Materials ◽  
Azores Archipelago ◽  
Study Materials ◽  
Good Potential ◽  
Santa Maria ◽  
Clay Materials ◽  
Clayey Materials

AbstractThere is growing interest in the use of natural materials as alternatives to medicinal products composed of chemicals. For this reason, it is important to study materials which fill this need (e.g. the formulation of peloids). Historically, the Azores archipelago has long been visited for its mud baths, mainly on São Miguel Island, where volcanic muds demonstrate beneficial properties. The volcanic muds are scarce, however. Thus, residual clay materials of Santa Maria Island were studied to assess their suitability for the formulation of peloids. The results of tests from 20 samples, collected from all over the island, presented evidence that they are very favourable for peloid formulations, due to their mineralogical, chemical and technological properties. The materials showed good potential for blending with the São Miguel volcanic muds. The deposits studied show extensive outcrops.

scholarly journals The pharmaco-technological studies of the tablet solid dosage form for the treatment of otolarynological diseases

2020 ◽  
pp. 51-60
Author(s):  
М. К. Гулзода ◽  
A. У. Рахмонов ◽  
К. С. Махсудов ◽  
Р. С. Мусоєв ◽  
С. M. Мусозода ◽  
...  
Keyword(s):  
Dosage Form ◽  
Raw Materials ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Technological Properties ◽  
Medicinal Products ◽  
Solid Dosage Form ◽  
Plant Raw Materials ◽  
Solid Dosage ◽  
Active Substances

The prevalence of acute respiratory diseases, the particular severity of their course, as well as the frequent relapses and complications require constant search for new, more effective and safe medicines for their prevention and treatment and introduction of these drugs into clinical practice. Generally, most of the medications used in the treatment of acute respiratory viral infections have a number of side effects. Currently, one of the promising areas of pharmacy is the study of biologically active substances, the medicinal plant raw material, and production of extracts and herbal medicines based on them. Objective – pharmaceutical development of a scientifically based composition, technology for obtaining anti-inflammatory and antimicrobial tablets developed on the basis of a selected and standardized plant substance-a thick extract of the leaves of sage nutmeg, which grows in Tajikistan.  When solving the task used the methods of evaluating the technological properties of LRS, physico-chemical properties of plant extracts, physical and technological properties of the mass for tabletting, pharmaco-technological tests of the developed tabletsa study of quantitative content of biologically active substances was determined by Pharmacopoeia methods. The developed solid dosage form with thick extract of sage leaves can be registered as a medicinal product, and the developed technology of tablets with thick extract of sage leaves can be of interest to manufacturers of medicinal products from plant raw materials. The developed methods can be used in laboratories for the detection and quantitative determination of BAS in plant raw materials of Clary sage leaves and medicinal products from this LRS. Thus, based on the results of pharmacological and technological research, we have developed a technology for obtaining a thick extract of sage nutmeg and tablets based on it for the treatment of otolaryngological diseases, which in turn is of interest for further research of the developed drug and its introduction into production.

Zullobalanus santamariaensis sp. nov., a new late Miocene barnacle species of the family Archaeobalanidae (Cirripedia: Thoracica), from the Azores

Zootaxa ◽  
2010 ◽  
Vol 2680 (1) ◽  
pp. 33 ◽  
Author(s):  
KAI WINKELMANN ◽  
JOHN S. BUCKERIDGE ◽  
ANA CRISTINA COSTA ◽  
MARIA ANA MANSO DIONÍSIO ◽  
ANDRÉ MEDEIROS ◽  
...  
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Sea Surface ◽  
Generic Level ◽  
Azores Archipelago ◽  
Barnacle Species ◽  
The Family ◽  
Oceanic Currents ◽  
Santa Maria ◽  
A New Species

A new species of Archaeobalanidae barnacle is described from the late Miocene and early Pliocene of Santa Maria Island (Azores). Samples were collected primarily from outcrops at Malbusca and “Pedra-que-Pica”. Zullobalanus santamariaensis sp. nov. is endemic to the Azores archipelago and until the discovery of this material, the genus was known only from the Southern Hemisphere. For such a long-range distribution we assume a combination of planktotrophic larval development, sea-surface oceanic currents and transport by cetaceans. This study endorses the elevation of the subgenus Zullobalanus to generic level.

scholarly journals Crustal structure of the Azores Archipelago from Rayleigh wave ellipticity data

2020 ◽  
Vol 221 (2) ◽  
pp. 1232-1247
Author(s):  
Ana M G Ferreira ◽  
Augustin Marignier ◽  
Januka Attanayake ◽  
Michael Frietsch ◽  
Andrea Berbellini
Keyword(s):  
Rayleigh Wave ◽  
Shear Wave ◽  
Crustal Structure ◽  
Wave Speed ◽  
Moho Depth ◽  
Seismic Stations ◽  
Shear Wave Speed ◽  
Azores Archipelago ◽  
Wide Range ◽  
Santa Maria

SUMMARY Determining the crustal structure of ocean island volcanoes is important to understand the formation and tectonic evolution of the oceanic lithosphere and tectonic swells in marine settings, and to assess seismic hazard in the islands. The Azores Archipelago is located near a triple junction system and is possibly under the influence of a mantle plume, being at the locus of a wide range of geodynamic processes. However, its crustal structure is still poorly constrained and debated due to the limited seismic coverage of the region and the peculiar linear geometry of the islands. To address these limitations, in this study we invert teleseismic Rayleigh wave ellipticity measurements for 1-D shear wave speed (VS) crustal models of the Azores Archipelago. Moreover, we test the reliability of these new models by using them in independent moment tensor inversions of local seismic data and demonstrate that our models improve the waveform fit compared to previous models. We find that data from the westernmost seismic stations used in this study require a shallower Moho depth (∼10 km) than data from stations in the eastern part of the archipelago (∼13–16 km). This apparent increase in the Moho depth with increasing distance from the mid-Atlantic ridge (MAR) is expected. However, the rate at which Moho deepens away from the MAR is greater than that predicted from a half-space cooling model, suggesting that local tectonic perturbations have modified crustal structure. The 1-D VS models obtained beneath the westernmost seismic stations also show higher wave speeds than for the easternmost stations, which correlates well with the ages of the islands except Santa Maria Island. We interpret the relatively low VS profile found beneath Santa Maria Island as resulting from underplating, which agrees with previous geological studies of the island. Compared to a recent receiver function study of the region, the shallow structure (top ∼2 km) in our models shows lower shear wave speed, which may have important implications for future hazard studies of the region. More generally, the new seismic crustal models we present in this study will be useful to better understand the tectonics, seismicity, moment tensors and strong ground motions in the region.

Pliocene and late Pleistocene (MIS 5e) decapod crustaceans from Santa Maria Island (Azores Archipelago: Central Atlantic): systematics, palaeoecology and palaeobiogeography

2020 ◽  
Vol 36 (1) ◽  
pp. 91-109
Author(s):  
Matúš Hyžný ◽  
Carlos S. Melo ◽  
Ricardo S. Ramalho ◽  
Ricardo Cordeiro ◽  
Patrícia Madeira ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
Decapod Crustaceans ◽  
Azores Archipelago ◽  
Mis 5E ◽  
Central Atlantic ◽  
Santa Maria

scholarly journals Comparison of Modern and Pleistocene (MIS 5e) Coastal Boulder Deposits from Santa Maria Island (Azores Archipelago, NE Atlantic Ocean)

2020 ◽  
Vol 8 (6) ◽  
pp. 386 ◽  
Author(s):  
Sérgio P. Ávila ◽  
Markes E. Johnson ◽  
Ana Cristina Rebelo ◽  
Lara Baptista ◽  
Carlos S. Melo
Keyword(s):  
Three Dimensions ◽  
Eastern Coast ◽  
Rocky Shores ◽  
Last Interglacial ◽  
Winter Storms ◽  
Azores Archipelago ◽  
Wave Heights ◽  
Mis 5E ◽  
Santa Maria ◽  
Boulder Deposits

Modern and palaeo-shores from Pleistocene Marine Isotope Substage 5e (MIS 5e) featuring prominent cobble/boulder deposits from three locations, on the southern and eastern coast of Santa Maria Island in the Azores Archipelago, were compared, in order to test the idea of higher storminess during the Last Interglacial. A total of 175 basalt clasts from seven transects were measured manually in three dimensions perpendicular to one another. Boulders that exceeded the minimum definitional diameter of 25 cm contributed to 45% of the clasts, with the remainder falling into the category of large cobbles. These were sorted for variations in shape, size, and weight pertinent to the application of two mathematical formulas to estimate wave heights necessary for traction. Both equations were based on the “Nott-Approach”, one of them being sensitive to the longest axis, the other to the shortest axis. The preponderance of data derived from the Pleistocene deposits, which included an intertidal invertebrate fauna for accurate dating. The island’s east coast at Ponta do Cedro lacked a modern boulder beach due to steep rocky shores, whereas raised Pleistocene palaeo-shores along the same coast reflect surged from an average wave height of 5.6 m and 6.5 m. Direct comparison between modern and Pleistocene deposits at Ponta do Castelo to the southeast and Prainha on the island’s south shore produced contrasting results, with higher wave heights during MIS 5e at Ponta do Castelo and higher wave heights for the modern boulder beach at Prainha. Thus, our results did not yield a clear conclusion about higher storminess during the Last Interglacial compared to the present day. Historical meteorological records pit the seasonal activity of winter storms arriving from the WNW-NW against the scant record of hurricanes arriving from the ESE-SE. The disparity in the width of the marine shelf around Santa Maria Island with broad shelves to the north and narrow shelves to the south and east suggested that periodic winter storms had a more regular role in coastal erosion, whereas the rare episodic recurrence of hurricanes had a greater impact on southern and southeastern rocky shores, where the studied coastal boulder deposits were located.

scholarly journals Microbiota of Sardinian Goat’s Milk and Preliminary Characterization of Prevalent LAB Species for Starter or Adjunct Cultures Development

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Maria Barbara Pisano ◽  
Maura Deplano ◽  
Maria Elisabetta Fadda ◽  
Sofia Cosentino
Keyword(s):  
Starter Cultures ◽  
Technological Properties ◽  
E Coli ◽  
Adjunct Cultures ◽  
Goat’S Milk ◽  
Good Potential ◽  
Goat's Milk ◽  
Coagulase Positive Staphylococci

This work was performed to study the microbiota of raw goat’s milk (67 samples) collected in different areas of Sardinia, in order to select autochthonous lactic acid bacteria (LAB) strains for use in goat cheese manufacturing. Total mesophilic bacteria ranged between 105 and 107 cfu/mL; mean counts of Enterobacteriaceae did not exceed 4 log cfu/mL whereas those of E. coli and coagulase-positive staphylococci were lower than 1.5 and 2 log ufc /ml, respectively. Neither Salmonella spp. nor Listeria monocytogenes were recovered. The numbers of total LAB were in the range from 104 to 107 cfu/mL and mean yeasts counts varied between 103 and 105 cfu/mL. The most frequently isolated LAB species were Lactococcus lactis subsp. lactis and Lactobacillus paracasei. The presence of Enterococcus faecium was also noteworthy. The in vitro study of some functional characteristics related to technological properties of the strains belonging to these species allowed to point out some strains possessing good potential for use as adjunct or starter cultures in the production of cheese.

scholarly journals Lichen and lichenicolous fungus records from Santa Maria, Azores archipelago

Botanica ◽  
2021 ◽  
pp. 34-43
Author(s):  
Pieter P.G. Van den Boom
Keyword(s):  
Rare Species ◽  
Lichenicolous Fungi ◽  
Azores Archipelago ◽  
Santa Maria

One hundred seventy-seven species of lichens and lichenicolous fungi are recorded for the island Santa Maria (Azores Archipelago, Portugal). Eighteen species are new for the archipelago. A list of all pertinent specimens with their locality and substrate is presented. Six rare species are illustrated.

scholarly journals Phorcus sauciatus(Koch, 1845) (Gastropoda: Trochidae) in Santa Maria, Azores archipelago: the onset of a biological invasion

2015 ◽  
Vol 81 (4) ◽  
pp. 516-521 ◽  
Author(s):  
Sérgio P. Ávila ◽  
Patrícia Madeira ◽  
Ana C. Rebelo ◽  
Carlos Melo ◽  
Ana Hipólito ◽  
...  
Keyword(s):  
Biological Invasion ◽  
Azores Archipelago ◽  
Santa Maria
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