Search results for "CO 2"
showing 10 items of 16 documents
Zirconium–hafnium and rare earth element signatures discriminating the effect of atmospheric fallout from hydrothermal input in volcanic lake water
2016
The geochemical behaviour of Rare Earth Elements, Zr and Hf was investigated in the thermal waters of Nevado del Ruiz volcano system. A wide range of pH, between 1.0 and 8.8, characterizes these fluids. The acidicwaters are sulphate dominatedwith different Cl/SO4 ratios. The important role of the pH and the ionic complexes for the distribution of REE, Zr a nd Hf in the aqueous phase was evidenced. The pH rules the precipitation of authigenic Fe and Al oxyhydroxides producing changes in REE, Zr, Hf amounts and strong anomalies of Cerium. The precipitation of alunite and jarosite removes LREE from the solution, changing the REE distribution in acidic waters. Y-Ho and Zr-Hf (twin pairs) have a…
Tres artistas en el exilio: Max Aub, Félix Candela y Josep Renau
2020
Three artists in exile focuses on the historical diaspora provoked by the Spanish civil war (1936- 1939), and how it influenced three prominent figures of the cultural scene of that period: the writer and typographer Max Aub Mohrenwitz (Paris, 1903-Ciudad de Mexico, 1972); the architect Félix Candela Outeriño (Madrid, 1910-Raleigh, US, 1977); and the artist Josep Renau Berenguer (Valencia, 1907-Berlín, 1982). They are the three protagonists of this article, who were simultaneously living in Mexico during the exile and who made notable contributions in the fields of arts and humanities (Max Aub), architecture (Félix Candela), and graphic design and photomontage (Josep Renau). While they were…
Sustainable Development and Technological Impact on CO 2 Reducing Conditions in Romania
2015
Climate change is a reality all over the world, and its complexity is increasing. Therefore, sustainability has become a national and international concern, ingrained in many organizational processes. The ability of organizations to respond to sustainability concerns is sometimes hindered by the complexity of integrating sustainability into business models and by the need to rethink their strategic directions. In Romania, sustainable development has become a priority for businesses, but even though companies are showing some concern, there are yet to demonstrate any full commitment (they are mainly concerned with areas such as society and the environment). This paper assesses Romania’s invo…
Wpływ handlu zagranicznego Unii Europejskiej na rzeczywistą emisję CO2
2016
Emisja CO2 jest problemem globalnym. Oznacza to, że walka tylko części krajów w tym obszarze niewiele zmienia. Celem niniejszego artykułu jest próba ukazania rzeczywistego poziomu emisji CO2 w UE, jak również wpływ wymiany handlowej Unii na emisję CO2 u jej głównych partnerów handlowych. Badanie zostało przeprowadzone na grupie 20 głównych partnerów handlowych UE i samej Unii. Rzeczywisty poziom emisji CO2 uzyskano przez zastosowanie wskaźnika emisji rzeczywistej. Jego wielkość uwzględnia transfer CO2 w produktach i usługach eksportowych, a także importowanych przez poszczególne kraje. W wyniku jego zastosowania okazało się, że rzeczywisty poziom emisji CO2 w badanych krajach jest znacznie …
Comparative study of upper lip frenectomy with the CO2 laser versus the Er, Cr:YSGG laser
2012
Objectives: To compare upper lip frenulum reinsertion, bleeding, surgical time and surgical wound healing in frenectomies performed with the CO2 laser versus the Er, Cr:YSGG laser. Study design: A prospective study was carried out on 50 randomized pediatric patients who underwent rhomboidal resection of the upper lip frenulum with either the CO2 laser or the Er,Cr:YSGG laser. Twenty-five patients were assigned to each laser system. All patients were examined at 7, 14, 21 days and 4 months after the operation in order to assess the surgical wound healing. Results: Insertion of the frenulum, which was preoperatively located between the upper central incisors, migrated to the mucogingival junc…
CO(2)-laser treatment of laryngeal amyloidosis.
2003
Four consecutive female patients (age: 14–47 years) with laryngeal amyloidosis, treated with endoscopic CO2-laser surgery, entered the study. All patients underwent periodic microlaryngoscopies following surgery to confirm the adequacy of the surgical resection. Recurrences or suspected lesions were resected and fibrin deposits were removed to prevent the formation of synechiae or healing adhesions. After two negative microlaryngoscopies, performed two months apart, the patients were followed-up approximately every six months over a period from six months to 18 years, with no evidence of recurrences. The endoscopic CO2-laser technique is highly effective in the treatment of localized laryng…
La correspondencia entre el P. Guzmán, Barbieru y Pedrell: revelaciones inéditas
2014
Il MemorIale In Onore degli Italiani Caduti nei campi di Sterminio Nazisti
2013
Se prima della guerra l’esperienza dei Bbpr poteva inquadrarsi all’interno del movimento razionalista, ideando progetti come le Colonie elioterapiche di Legnano (1932) e vari piani regolatori, (Pavia, Isola d’Elba, Valle d’Aosta), la barbarie della guerra mutò tale visione, operando una significativa rifondazione del gruppo stesso, in un rinnovato rapporto con il potere e la realtà: il Monumento ai morti nei lager del Cimitero monumentale di Milano (1946) ne è espressione emblematica. Seguirono progetti storici: Torre Velasca (1958), il Memoriale di Gusen (1960) e progetti di una nuova cultura architettonica che contribuì ad affermare una scuola sviluppatasi soprattutto attorno al Politecni…
Regional anticoagulation with heparin of an extracorporeal CO2 removal circuit: a case report
2019
Abstract Background Extracorporeal carbon dioxide removal is an increasingly used respiratory support technique. As is true of all extracorporeal techniques, extracorporeal carbon dioxide removal needs proper anticoagulation. We report a case of a patient at risk of bleeding complications who was treated with extracorporeal carbon dioxide removal and anticoagulated with a regional technique. Case presentation A 56-year-old Caucasian man with a history of chronic obstructive pulmonary disease exacerbation required extracorporeal carbon dioxide removal for severe hypercapnia and acidosis despite mechanical ventilation. The extracorporeal circuit was anticoagulated using a regional heparin tec…