Results 41 to 50 of about 118,583 (280)
Stamps of the People’s Republic of Tuva (PRT, 1921-1944) as indicia and as items of collectors’ interest, are universally renowned, and as such have been the subject of a good deal of research. These works contain more than a mere story of Tuvan stamps –
Kaadyr-ool A. Bicheldey
doaj
President Barack Obama, Historic Commemorative Postal Issue, 44th President of the United States of America, Sierra Leone, sheet of 4 stamps. The President Obama International Stamp Collection.
Sierra Leone Postal Services Limited
core +1 more source
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash +4 more
wiley +1 more source
Receipt of request from island colonies for postal stamps
Receipt of request from Pacific Island colonies for postal ...
Kerr, Philip Henry
core +2 more sources
Sellos y memoria: la construcción de una imagen de España, 1936-1945
RESUMEN: Los sellos de correos son un elemento de soberanía nacional y un privilegiado lieu de mémoire. En la España de 1936 a 1945 aparecieron miles de sellos, aunque sólo unos pocos fueron oficiales.
Jesús GARCÍA SÁNCHEZ
doaj
Bone‐Inspired Recyclable Composites for Damage‐Tolerant Circular Materials
Bone‐inspired architected composites are developed by combining osteon‐like reinforcements with a recyclable Elium thermoplastic matrix. The hierarchical architecture redirects cracks and promotes energy dissipation, while enabling recovery of intact, aligned, load‐bearing reinforcement units that retain their original stiffness, revealing a route ...
Alessandro Stagni +4 more
wiley +1 more source
Researches On the Positive Sciences and The Development Process of The History of Medicine
In the medieval Western world, when Europe was in economic and cultural stagnation for a long time, Arabic-speaking culture developed significantly. He has greatly contributed to the development of science, philosophy, literature and art, which includes ...
Vesile Şemşek
doaj
Bio‐Inspired Artificial Ionic Mechanoreceptor
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari +4 more
wiley +1 more source
Postal Stamps & Cardiac Surgery
Cardiovascular Journal Volume 6, No.
openaire +1 more source
Recovering historical inflation data from postal stamps prices [PDF]
For many developing countries, historical inflation figures are rarely available. We propose a simple method, which aims to recover such figures thereby using prices of postal stamps, issued in earlier years.
Janssens, E. (Eva) +5 more
core +1 more source

