Results 71 to 80 of about 2,000,195 (309)

Performance analysis of double-effect absorption refrigeration systems using hydrofluoroolefin refrigerants and ionic liquid absorbents

open access: yesCase Studies in Thermal Engineering
This study investigated the feasibility of double-effect absorption refrigeration systems (DEARS) using hydrofluoroolefin (HFO) refrigerants and ionic liquid (IL) absorbents as working fluid pairs.
Yonggyun Lee   +5 more
doaj   +1 more source

DECONSTRUCTION DU MONDE ARABE [PDF]

open access: yesAnnals: Series on History and Archaeology (Academy of Romanian Scientists), 2012
Les intérêts français, anglais, italiens, allemands dans cette zone, le pétrole qui depuis le XX -ième siècle est devenu indispensable, ont été des facteurs qui ont mené aux dissensions et aux conflits, certains pas encore solutionnés. Dans la
Ionuţ COJOCARU
doaj  

South Europe perspective of COVID-19 impact on travel medicine. [PDF]

open access: yesJ Travel Med, 2021
Gobbi F   +8 more
europepmc   +1 more source

Economic regional and cross-border cooperation in the South-East Europe for the purpose of its faster integration in the European Union [PDF]

open access: yes
Territorial borders of the future European Union imply an integration of the South-East Europe into the EU political and economic structures. Such “map of the European Union” should represent the “European perspective” to the countries of the South-East ...
Izet Ibreljic, Salih Kulenovic
core  

Speaking of the south: northern voices and southern realities [PDF]

open access: yes, 2006
When so many voices from the north of the world strike so many discordant notes when speaking of the south, how is it possible to find a voice that is strong, significant and truthful, yet not neo-colonial and arrogant?
Sheehan, Helena
core  

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

The year 1989 in Poland. The Political Virtue of Moderation and the Conservative Vocation of Polish Solidarity

open access: yesSfera Politicii, 2014
Assuming that 1989 was a moment of an affirmation of the political cultures belonging to the Central and Eastern Europe’s countries, this article attempts to highlight the specific elements of the overthrow of communism in Poland.
Florin-Ciprian Mitrea
doaj  

THE SCRIPT OF OTTOMAN - RUSSIAN TREATY OF 1812 [PDF]

open access: yesAnnals: Series on History and Archaeology (Academy of Romanian Scientists), 2012
The Russian Ottoman war of 1806 -1812 caught the Romanian Principalities as in a vise. The conflict of the two Empires proceeded on the territory of the Romanian Principalities, wit h critical consequences for the Romanian people.
Ionuţ COJOCARU
doaj  

Water security determines social attitudes about dams and reservoirs in South Europe. [PDF]

open access: yesSci Rep, 2022
Dopico E   +8 more
europepmc   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

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