scholarly journals Materials and Tools across Volcanoes: Exploitation of Georesources in Piano dei Cardoni (Ustica, Italy) during Prehistory

2021 ◽  
Vol 64 (5) ◽  
pp. VO552
Author(s):  
Claudia Speciale ◽  
Roberta Mentesana ◽  
Giuseppe Montana ◽  
Vincenza Forgia ◽  
Filippo Mantia ◽  
...  
Keyword(s):  
Raw Materials ◽  
Volcanic Rocks ◽  
Late Neolithic ◽  
The North ◽  
Western Area ◽  
First Results ◽  
Western Sicily ◽  
Plant Processing ◽  
Intense Activity ◽  
North Western

   The paper aims at merging the first results from the analyses of the georesources exploited in the site of Piano dei Cardoni (Ustica island, Italy) during the Neolithic phases of its occupation (Middle-Late Neolithic, 4.7-4.2 ka cal BC). Grinding tools consist of a very varied typology of local volcanic rocks, easy to collect and available very close to the investigated site. A selection of shapes and lithology is applied to reach the best performance of the tools. The elevated number of grinders, pestles, mortars testify to an intense activity of food/plant processing in the site. The absence of chert or obsidian resources on the island pushed the human communities to import such raw materials from the Aeolian islands and probably from the north-western area of Palermo. Pumice is collected on the same island, probably due to the local availability and its good quality. Similarly, local clay resources are used for the manufacture of ceramics, mostly burnished and incised wares. Ustica was therefore almost autonomous for the exploitation of resources, with volcanic rocks readily available in abundance and with the most significant exception being chert and obsidian. This last one probably imported and worked on the island and then moved towards North-Western Sicily. 

HPLC Screening of Bioactives Compounds and Antioxidant Capacity of Different Hypericum Species

2018 ◽  
Vol 69 (2) ◽  
pp. 305-309 ◽  
Author(s):  
Daniela Gitea ◽  
Simona Vicas ◽  
Manuel Alexandru Gitea ◽  
Sebastian Nemeth ◽  
Delia Mirela Tit ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Methanol Extract ◽  
Antioxidant Properties ◽  
Polyphenolic Compounds ◽  
The Other ◽  
The North ◽  
Western Area ◽  
North Western ◽  
Hypericum Species ◽  
Biological Actions

Our study compares the content in polyphenolic compounds and hypericin, in four species of Hypericum - H. perforatum L., H. maculatum Cr., H. hirsutum L., H. tetrapterum Fr. (syn. Hypericumacutum Mnch.) harvested from spontaneous flora in the north-western area of Transylvania, Romania. These species represent an important source of such compounds with different biological actions. After making the extracts, they were subjected to HPLC-SM analysis. The presence of rutoside in the largest amount (462.82 mg %) in the H. perforatum extract was observed, this containing most of the flavonoid heterosides. For the species H. maculatum, the presence in a much higher amount of the hyperoside (976.36 mg %) is characteristic compared to the other species. Quercetol is the best represented of the flavonoid aglycons, its concentration being the highest in H. hirsutum (659.66 mg %). The hypericin content ranges from 0.2171 g % in the H. tetrapterum extract, to 0.0314 g % in the methanol extract of H. maculatum.The highest antioxidant properties measured by FRAP method were recorded in the case of H. perforatum and H. maculatum.

Spatial and temporal spread of Citrus tristeza virus and its aphid vectors in the North western area of Morocco

2015 ◽  
Vol 23 (6) ◽  
pp. 903-912 ◽  
Author(s):  
Abdesslam Elhaddad ◽  
Amal ElAmrani ◽  
Alberto Fereres ◽  
Aranzazu Moreno
Keyword(s):  
Citrus Tristeza Virus ◽  
The North ◽  
Western Area ◽  
Aphid Vectors ◽  
Tristeza Virus ◽  
North Western ◽  
Temporal Spread ◽  
Citrus Tristeza

scholarly journals Lithofacial composition and distribution of middle albian strata within the Crimean Plains

2014 ◽  
pp. 6-11
Author(s):  
L. Kyselevych
Keyword(s):  
Volcanic Activity ◽  
Volcanic Rocks ◽  
Sedimentary Rocks ◽  
Structural Features ◽  
Marine Clay ◽  
The North ◽  
Almost Everywhere ◽  
Exploration Drilling ◽  
Facies Types ◽  
Intense Activity

The Middle Albian sedimentary complex is deposited on Middle Albian rocks, commonly with no evident unconformity, and includes, along with sedimentary rocks, volcanic activity products. Middlle Albian sediments are distributed almost everywhere within the North Crimean paleodepression. They occur at a depth of 2-5 km and are represented by sedimentary-volcanogenic formations whose generation was caused by intense activity of 6 stratovolcanoes and 3 shield volcanoes. Such formations fail to occur only on a few local sites of the paleodepression and in its northern nearside zone. Sediments are characterized by wide development in their section, along with sedimentary rocks, of pyroclastic and effusive formations whose generation was caused by volcanic activity. The volcanic activity was at its highest during the Middle Albian, which resulted in accumulations of facies-variable volcanogenic-sedimentary strata. Volcanogenic and volcanogeno-clastic Middle Albian sediments occur among marine clay formations as lens-shaped bodies, sheets and flows sometimes stretching over dozens of kilometers, their thickness ranging from a few metres to hundreds. Structural features of volcanogenic-sedimentary strata of different regions depend on their proximity to the centers of volcanic activity and are determined by the nature and characteristics of paleovolcanic eruptions. A closer proximity to paleovolcanoes accounts for an increase in volcanic rocks in the section, with effusive rocks being mostly abundant among them. At a longer distance from the centers of volcanic activity, pyroclastic, volcanogenic-sedimentary and sedimentary deposits become more abundant in the section. Synthesis and analysis of the lithological and petrographic characteristics of Middle Albian sediments, which were based on analyzing deep parametrical and exploration drilling data, made it possible to define 10 main Middle Albian types of lithofacies. These differ in their composition and the share of volcanic activity products found in marine clay sediments. Lithological-facies types of the Middle Albian sediment sections have been defined, as well as the limits of their lateral distribution within the North Crimean paleodepression of the Crimean plains.

scholarly journals Monitoring of Wheat Varieties in the North-Western of Transylvania

1970 ◽  
Vol 66 (2) ◽  
Author(s):  
Sevastiţa MUSTE ◽  
Maria TOFANA ◽  
Crina MURESAN ◽  
Anamaria BIROU (POP) ◽  
Simona AVRAM (MAN) ◽  
...  
Keyword(s):  
Quality Index ◽  
Performance Criteria ◽  
Wheat Quality ◽  
Wheat Varieties ◽  
The North ◽  
Western Area ◽  
Productive Potential ◽  
North Western ◽  
Poor Management ◽  
European Agriculture

This paper analyzes the quality index of baking values regarding some domestic and foreign varieties of wheat, grown in a comparative crop from two counties of Romania Satu Mare and Bihor. The agriculture in the western area and overall in Romania, doesn’t have the characteristics of sustainable agriculture, since the obtained production is far from the performance criteria of European agriculture, poor management of risk factors is one of the causes of this situation. The research objectives were: • the establishing the productive potential of varieties of winter wheat • the unlocking the potential of productive varieties of wheat; • the correlation of productive characteristics regarding varieties of bread wheat quality

scholarly journals Geologie et pétrographie des roches sédimentaires et volcaniques kétilidiennes (Protérozoique inférieur) de la baignoire d'Arsuk, Groenland méridional

1974 ◽  
Vol 110 ◽  
pp. 1-157
Author(s):  
J Muller
Keyword(s):  
Volcanic Rocks ◽  
Mobile Belt ◽  
Second Phase ◽  
Early Proterozoic ◽  
The North ◽  
Western Border ◽  
Intense Deformation ◽  
Basic Rocks ◽  
North Western ◽  
Middle Proterozoic

The Arsuk ø area is situated along the north-western border of the Early Proterozoic (> 1750 m.y.) mobile belt of South Greenland. Around Arsuk ø reactivated Archaean (> 2500 m.y.) basement is represented by gneiss, amphibolites and migmatites belonging to several lithological series. In the Arsuk basin Early Proterozoic (Ketilidian) supracrustals consist of a group of sedimentary rocks which is overlain by a group of volcanic rocks. The sedimentary Ikerasârssuk Group, with a thickness between 1000 and 1500 m, consists of semi-pelites and pelites with several zones of pyrite-bearing graphite schists and dolomitic limestones. There are also numerous sills of basic rocks which have the same age as the overlying group of volcanic rocks. In some localities the basal member of the group consists of feldspathic quartzites. The volcanic Arsuk Group, the upper part of which is eroded away, has a measured thickness of 4200 m. It consists of pillow lavas, basic massive lavas, volcanic breccias, lapillis and tuffites. There are also some ultrabasic rocks and thin horizons of pyrite-bearing graphite schists with chert. These supracrustal rocks underwent intense deformation at the close of the Early Proterozoic. Three phases can be recognised. The first phase produced N-S to NNE-SSW recumbent folds and the regional schistosity. Refolding during the second phase resulted in folds with E-W to ESE-trending axial planes and a strain slip cleavage. The last phase produced N-S trending structures. The grade of metamorphism during the first phase of deformation corresponds to greenschist facies. In the supracrustals close to the basement recrystallisation in amphibolite facies took place between the first and third phases of folding. This shows the existence of a gradient towards still higher grade metamorphic conditions in the underlying Archaean basement undergoing thorough reconstitution at the end of the Early Proterozoic. As a result of the deformation the stratigraphical unconformity between the Early Proterozoic (Ketilidian) supracrustals and the Archaean basement has been destroyed. During the Gardar period (Middle Proterozoic: > 950 m.y.) and again during the Mesozoic faulting and dyking occurred.

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