Results 71 to 80 of about 43,263 (189)

Placer Gold Deposits of the Shagan‐Oba River (Eastern Kazakhstan)

open access: yesResource Geology, Volume 75, Issue 1, January/December 2025.
The distribution and structure of placer gold deposits along the Shagan‐Oba River are shown. Integrated geomorphological mapping, trench sampling, and gold‐grain morphology reveal a mixed origin of the placers and enrichment near bedrock within terrace alluvium.
Geroy Zholtayev   +4 more
wiley   +1 more source

Smart learning environments, and not so smart learning environments: a systems view

open access: yesSmart Learning Environments, 2018
It is fruitless to talk of smart learning environments unless we know what is meant by those that are not smart. All environments influence behaviour and, by and large, are in turn influenced by the behaviour of the agents of which they are at least ...
Jon Dron
doaj   +1 more source

Improvement of the Thermophysical Characteristics of Polymer Composites Designed to Protect Water Transport

open access: yesAdvances in Materials Science and Engineering, Volume 2025, Issue 1, 2025.
The thermophysical properties of polymeric materials filled with the refractory compounds titanium carbide (TiC) and ferrite (Fe3C) were studied using thermogravimetric and differential thermal analysis. These techniques allow structural transformations in modern materials to be assessed. Composites containing an active additive at a concentration of q 
Oleksandr Sapronov   +12 more
wiley   +1 more source

Modern weapons and military equipments for issue 3-2020 / Современное вооружение и военное оборудование, к выпуску № 3-2020 / Savremeno naoružanje i vojna oprema za broj 3-2020

open access: yesVojnotehnički Glasnik, 2020
Modernization of the Moscow anti-missile shield; Turkey chooses Ukrainian active protection system Zaslon; New Swedish submarine; Firefly: Israeli "wandering" ammunition (or kamikaze drone); The MZ-204 Highlander mortar prototype is ready; Operation ...
Dragan M. Vučković
doaj  

Dron en impresión 3D

open access: yesLetras ConCiencia TecnoLógica, 2023
Investigar el potencial de la impresión 3D para reducir el costo de los drones, permitió que se evaluaran los beneficios potenciales de la impresión 3D en el desarrollo estructural, el diseño y la creación de exoesqueletos para drones. La impresión 3D podría reducir significativamente los costos de desarrollo y producción de drones, lo que podría ...
openaire   +1 more source

Savaş Haberciliğinde Dron Kullanımının Baudrillard Üzerinden İncelenmesi

open access: yesTürkiye Medya Akademisi Dergisi
Günümüzde olumsuz haber türü olarak görülmekte olan savaş haberciliğinde gazetecilerin dron kullanımına rastlamak mümkün olmaktadır. Buna örnek ise 7 Ekim 2023 tarihinde Filistin ve İsrail arasında yaşanılan çatışma gösterilebilmektedir.
Kübra Erbayrakçı
doaj   +1 more source

p-Learning’s unwelcome legacy

open access: yesItalian Journal of Educational Technology, 2016
Formal teaching of adults has evolved in a context defined, initially, by the constraints of physical boundaries. Classroom walls directly entail timetables, norms and rules of behaviour, social segregation into organized groups and, notably, the course ...
Jon Dron
doaj   +1 more source

Disseny d'un sistema per pilotar un dron [PDF]

open access: yes, 2017
Els sistemes de pilotatge de drons que hi ha avui en dia no contemplen diferents situacions on es requereix utilitzar una única mà per a pilotar el dron i l'utilització de l'altre mà per a controlar un altre sistema com pot ser una càmera.
Covas Domenech, Kevin   +1 more
core  

Adaptive Responses of Cyanobacteria to Phosphate Limitation: A Focus on Marine Diazotrophs

open access: yesEnvironmental Microbiology, Volume 26, Issue 12, December 2024.
Marine diazotrophic cyanobacteria, which are essential for atmospheric nitrogen fixation in low‐nutrient oceans, have developed various strategies to survive under phosphate (Pi) limitation by using high‐affinity transporters and enzymes that break down dissolved organic phosphorus (DOP).
Chloé Caille   +3 more
wiley   +1 more source

Classification of Reflexive Polyhedra in Three Dimensions

open access: yes, 1998
We present the last missing details of our algorithm for the classification of reflexive polyhedra in arbitrary dimensions. We also present the results of an application of this algorithm to the case of three dimensional reflexive polyhedra.
Kreuzer, M., Skarke, H.
core   +2 more sources

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