Results 11 to 20 of about 45,965,697 (271)
En un mundo cada vez más conectado, comercial y virtualmente, los países están apostando por la integración regional como un mecanismo para promover y fortalecer su oferta exportable.
Carmen Amelia Coral Guerrero +2 more
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CRISIS OF SOUTH AMERICAN REGIONALISM: DISCUSSIONS ON INTEGRATION, FRAGMENTATION AND DISINTEGRATION
Regionalism has been considered one of the most relevant phenomena in international relations since the mid-twentieth century despite having gone through increasing questions and possible crises in the first decades of the 21st century.
Patrícia Nasser de Carvalho +1 more
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Twenty-five elements, including the most essential and toxic metals, were determined in fifty beer samples stored in cans and bottles by Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Inductively Coupled Plasma Optical Emission Spectroscopy (ICP ...
Magdalena Gajek +4 more
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Abstract It is generally believed that termites can’t learn and are not “intelligent”. This study aimed to test whether termites could have any form of memory. A Y-shaped test device with one release chamber and two identical test chambers was designed and constructed by 3D printing.
Yifan Evan Ding, Zhenghui Li
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A calculus for Esterel: if can, can. if no can, no can. [PDF]
The language Esterel has found success in many safety-critical applications, such as fly-by-wire systems and nuclear power plant control software. Its imperative style is natural to programmers building such systems and its precise semantics makes it work well for reasoning about programs. Existing semantics of Esterel generally fall into two
Spencer P. Florence +3 more
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Integral and measure-turnpike properties for infinite-dimensional optimal control systems [PDF]
We first derive a general integral-turnpike property around a set for infinite-dimensional non-autonomous optimal control problems with any possible terminal state constraints, under some appropriate assumptions.
Trelat, Emmanuel, Zhang, Can
core +3 more sources
以硝酸铈铵I2/CAN为反应体系时,当苯环上有给电子基团,碘和硝酸根对烯丙基双键的加成及苯环单碘代产物,收率较好;当苯环连有吸电子基团时,碘和硝酸根对烯丙基双键加成,产率较低.以Br2/CAN为反应体系时,当苯环上连有给电子基团时,溴对烯丙基碳碳双键加成,苯环上发生了一溴代或二溴代,产率中等;当苯环上连有吸电子基团时,溴对烯丙基碳碳双键加成,产率较高.
HEZhi-cheng(何志成) +1 more
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Computer Network Attacks and Modern International Law
Computer network attacks (CNA) is a no doubt actual theoretical and practical topic today. Espionage, public and private computer-systems disruptions committed by states have been a real life.
A. L. Kozik
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The primary objective of this research was to examine how gender influences self-perceived extroverted learners in their choice and application of language acquisition strategies.
Le Thanh Thao +6 more
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