Results 31 to 40 of about 42,369 (288)
Disputes over small territories : a study of the spatial, political and philatelic aspects of such disputes : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Arts in Geography at Massey University, Palmerston North, New Zealand [PDF]
, 2016 “Most governments are now alive to the advertising and propaganda value of postage stamps” Sir Dudley Stamp (1966) Professor of Geography Seventy years after the formation of the United Nations, the world continues to be plagued by civil disorder ...
Dawson, Kenneth Porter
core
Advanced Engineering Materials, EarlyView.The growing demand for lightweight, nontoxic, and multifunctional gamma shielding materials has intensified efforts to find alternatives to conventional lead and aluminum‐based protectants. In this work, we develop epoxy quartz fabric composites reinforced with cobalt chloride (CoCl2) microparticles, fabricated via hand lay‐up with varying filler ...
Summan Urooge +7 more
wiley +1 more source
PHILATELY IN THE SPACE OF A MUSEUM: VIEW FROM THE STANDPOINT OF CULTURAL THEORY [PDF]
Muzeológia a Kultúrne Dedičstvo, 2019 The article deals with the introduction of the term timbrology (timbrologie) in relation to the processes of research work with museum articles related to the history of postal communication and to philately. Besides, the author sets the following tasks:
Bakayutova Lyudmilla N.
doaj
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
Estimating the stock of postwar Dutch postal stamps [PDF]
Applied Economics, 2007 This paper seeks to find an answer to the question: "How many stamps are still around, given that we know their prices at issue, the current price and the amount then issued?" For this purpose, I develop a simple statistical model, the parameters of which are estimated for over 1000 postwar Dutch stamps. One finding is that some stamps are very scarce,
openaire +3 more sources
Financing Marine Conservation: A Menu of Options [PDF]
, 2004 This guide describes over 30 mechanisms for financing the conservation of marine biodiversity, both within and outside of MPAs. Its main purpose is to familiarize conservation professionals i.e., the managers and staff of government conservation agencies,
Barry Spergel, Melissa Moye
core
Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
Researches On the Positive Sciences and The Development Process of The History of Medicine
Darüşşifa İslam Tıp Tarihi Araştırmaları Dergisi, 2022 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
Advanced Functional Materials, EarlyView.This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker +5 more
wiley +1 more source
Planet versus plastic: The case of plastic pollution through the lens of philately
Cambridge Prisms: PlasticsPlastic pollution is recognised as one of this century’s most significant environmental challenges and has the characteristics of a super wicked problem.
Renjith VishnuRadhan, Shagnika Das
doaj +1 more source