Search results for "PELE"

Trace element data covering 96-7 ka BP from stalagmite CM (Santo Tomas Cave, Cuba)

2020

We present a new speleothem trace element and stable isotope record, which extends previous paleoclimate evidence from Cuban speleothems to the last 96 ka. Stable isotope samples were micromilled at a resolution of 0.10-0.33mm, and measured using an IRMS equipped with a Gasbench. Line scans of Element/Calcium ratios of the speleothem were measured by laser ablation ICPMS and were reduced to the resolution of the stable isotope records.

Jaunākā pirmsskolas vecuma bērnu higiēniskās kultūras iemaņu veidošana, izmantojot didaktiskās spēles

2018

Kvalifikācijas darbs izstrādāts par tēmu: „ Jaunākā pirmsskolas vecuma bērnu higiēniskās kultūras iemaņu veidošana, izmantojot didaktiskās spēles”. Darba mērķis: noskaidrot spēļu izmantošanas efektivitāti higiēniskas kultūras iemaņu veidošanas procesā bērniem jaunākā pirmsskolas vecumā. Trīs gadi ir ļoti svarīgs posms bērna dzīvē. Tieši 3-4 gadu vecumā veidojas nākotnes personības pamati, tiek ielikti bērna fiziskās, garīgās, morālās attīstības pamati. Higiēniskās kultūras iemaņu veidošanai ir nepieciešama īpaša uzmanība attiecībā uz bērniem, sākot jau no jaunākā pirmsskolas vecuma. Darbs sastāv no divām daļām – teorētiskas un praktiskās. Teorētiskajā daļā tiek analizēti pedagogu un psiholo…

Water sorption isotherms of molecularly imprinted polymers. Relation between water binding and iprodione binding capacity

2017

International audience; Molecularly imprinted polymers are often used in aqueous medium in order to recognize specifically a target molecule. The molecular recognition is usually based on hydrogen bonding. In this case, water molecule presents a serious competition towards the target molecule. In this study, the water sorption by molecularly imprinted polymers was studied in aqueous medium. The molecularly imprinted polymers were specific for iprodione fungicide and were prepared using a 24 full factorial experimental design. They were synthesized using EGDMA or TRIM as crosslinker, methacrylamide or styrene as functional monomer and using bulk or precipitation polymerization. The water sor…

Aleksandr Prochanov, o la Crimea come antidoto al postmoderno

2019

When Aleksandr Prokhanov’s Mr. Hexogen appeared in 2001 most critics perceived it as a postmodern novel – a totally unexpected move from this author, a long-standing Soviet writer and a leader of the Stalinist-nationalist opposition. The work shows indeed some features in common with, for instance, Babylon by Viktor Pelevin, one of the most popular Russian postmodern writers. Both novels demonstrate a phantasmagoric picture of the hidden side of Russian political life: if, however, in Pelevin’s case the intent is clearly ironic, Mr. Hexogen can be read as a book aimed to convey the view that the Moscow terrorist attacks of winter 1999 were designed in order to ensure Putin’s raise to presid…

Submerged speleothems and sea level reconstructions: a global overview and new results from the Mediterranean Sea

2021

This study presents a global overview of the submerged speleothems used to reconstruct paleo sea levels and reports new results from two stalactites collected in the Mediterranean Sea. Coastal cave deposits significantly contributed to the understanding of global and regional sea-level variations during the Middle and Late Quaternary. The studied speleothems cover the last 1.4 Myr and focused mainly on Marine Isotope Stages (MIS) 1, 2, 3, 5.1, 5.3, 5.5, 7.1, 7.2, 7.3 and 7.5. The results indicate that submerged speleothems represent extraordinary archives that can provide detailed information on former sea-level changes. The two stalactites collected in the central Mediterranean Sea, at Fa…

Il sistema carsico di Monte Conca

2014

Recenti indagini sul sistema carsico di Sant’Angelo Muxaro (Sicilia Centrale)

2015

Il sistema carsico di Sant’Angelo Muxaro si sviluppa in corrispondenza del rilievo gessoso su cui sorge l’abitato omonimo, nel centro Sicilia, in provincia di Agrigento. Tale sistema è costituito da due inghiottitoi attivi (Grotta di Sant’Angelo Muxaro o localmente Grotta Ciavuli e Inghiottitoio Infantino), che si aprono al termine di due valli cieche alla base del versante meridionale del rilievo, e da una risorgenza attiva, ubicata alle pendici del versante nord-occidentale dello stesso rilievo. Le prime esplorazioni speleologiche e l’attività di ricerca in questo sistema nei gessi messiniani della Sicilia, escludendo le segnalazioni del geografo Olinto Marinelli, sono cominciate tra la f…

Flank Margin Caves In Telogenetic Limestones In Italy

2017

Almost 20% of Italy is characterized by the outcropping of carbonate massifs ranging in age from Cambrian to Quaternary. Coastal karst is present in many Italian regions: from North-East to South and West: the Gulf of Trieste, the Conero (South of Ancona, Marche), the Adriatic coast of Apulia including Gargano, Murge and Salento, Maratea in Basilicata, Cilento in Campania, Circeo and Gaeta in Latium, Argentario and Giannutri Island in Tuscany, the southernmost part of the Ligurian Alps, Palermo Mts., San Vito Lo Capo, Syracuse coast and Marettimo Island in Sicily, and, especially, in Sardinia, which has carbonate rocks touching the sea along the coast of Balai near Porto Torres, Capo Caccia…

Karst underground protection in Sicily (southern Italy), some examples from speleological natural reserves

2011

Secondary minerals from halite caves in the Atacama Desert (Chile)

2017

In the past 15 years several expeditions by French, American and especially Italian cavers have surveyed over 15 km of salt cave passages in the Cordillera de la Sal, close to San Pedro de Atacama village (Atacama Desert, Northern Chile). Over 50 caves have been explored up to now at an elevation around 2,500 m asl. These karst systems are characterized by in-cave temperature of around 17 °C and a relative humidity always very low, with a maximum of 15%. This extreme aridity is due to the severe conditions of the area with only a couple millimeters annual rainfall and several years without rain. Currently the rare precipitation events are enough to allow the dissolution of the salt rock and…