scholarly journals Demand for recycling filament in 3D printing

2020 ◽  
Vol 10 (2) ◽  
pp. 65-72
Author(s):  
Barbara Kmetz ◽  
Ágnes Takács

In the study the brief history of 3D printing is written, how the recent past and present is changing the open source movement. The FDM extrusion technology is reviewed in the text, also the areas where the technology can be used. There is a detailed description about the Creality Ender 5 printer and its printed objects. The study’s next main part contains the conceptual design of a filament recycling machine. After the needed market and patent research the functions are established, concepts of the machine are determined. These were evaluated and an optimal sketch was chosen as a result.

Author(s):  
Miguel Alarcão

Textualizing the memory(ies) of physical and cultural encounter(s) between Self and Other, travel literature/writing often combines subjectivity with documental information which may prove relevant to better assess mentalities, everyday life and the social history of any given ‘timeplace’. That is the case with Growing up English. Memories of Portugal 1907-1930, by D. J. Baylis (née Bucknall), prefaced by Peter Mollet as “(…) a remarkably vivid and well written observation of the times expressed with humour and not little ‘carinho’. In all they make excellent reading especially for those of us interested in the recent past.” (Baylis: 2)


Author(s):  
Svetlana Petrova

This chapter investigates the syntactic properties and the pragmatic behaviour of verb-initial declarative clauses in the history of German. The focus is on OHG because in this period, verb-initial declaratives represent a frequent, well-known alternative to canonical verb-second main clauses. It is argued that verb-initial declaratives are native in origin, and that they are derivable under a special interpretation of the verb-second rule. The main part of the chapter deals with the pragmatic properties of verb-initial declaratives in OHG, summarizing the various attempts at explaining the distribution of these orders and showing that further research is needed to arrive at a more adequate understanding of their function in the discourse. The chapter closes up with the discussion of the later development of verb-initial declaratives in German, sketching the controversial treatments of this question in the literature on German diachronic syntax.


2020 ◽  
Vol 36 ◽  
pp. 101473 ◽  
Author(s):  
Aliaksei L. Petsiuk ◽  
Joshua M. Pearce

2020 ◽  
pp. 004912412091494
Author(s):  
Olav Muurlink ◽  
Anthony M. Gould ◽  
Jean-Etienne Joullié

Development of graphical methods for representing data has not kept up with progress in statistical techniques. This article presents a brief history of graphical representations of research findings and makes the case for a revival of methods developed in the early and mid-twentieth century, notably ISOTYPE and Chernoff’s faces. It resurrects and improves a procedure, clustered iconography, which enables the presentation of multidimensional data through which readers engage more effectively with the presentation’s central message by way of an easier understanding of relationships between variables. The proposed technique is especially well adapted to the needs and protocols of open-source research.


2021 ◽  
pp. 76-107
Author(s):  
Л.А. Беляев ◽  
П.Л. Зыков ◽  
О.М. Иоаннисян ◽  
А.В. Сиренов

В статье публикуются материалы по истории некрополя при главном храме монастыря Рождества Богородицы во Владимире, где в 1263 г. был погребен князь Александр Ярославич Невский. Основная часть сведений получена в 1997–2000 гг. при раскопках остатков собора (снесен в 1930 г.). Это белокаменные саркофаги и могилы, а также остатки самого собора, построенного в 1198 г. из белого камня, и его галереи, целиком перестроенной из кирпича в XVII в. В кладке галереи была обнаружена ниша с нижней частью саркофага, возможно, служившей одной из реликвий князя после переноса его мощей в Санкт-Петербург (1722–1724). Традиционные источники, рассказывающие о судьбе погребения князя Александра в XIV—XVIII вв., рассматриваются в свете археологических данных и новых архивных документов и фотографий (в том числе - о каменных гробах, найденных при сносе собора в 1930 г.). Materials on the history of the necropolis near the principal church of the monastery of Nativity of Blessed Virgin where Prince Alexander Nevsky was buried in 1263 are published in the article. The main part of information was obtained during the excavation of the church remnants (excavations were performed in 1997-2000). The church was demolished in 1930. Archeologists discovered sarcophagi and tombs made of white stone and remnants of the very church built in 1198 of white stone and of its gallery that was rebuilt completely of bricks in the 17th century. A niche was discovered in the brickwork and contained a lower part of a sarcophagus. That served (probably) as a relic of Alexander upon his remnants transfer to Saint-Petersburg. Traditional sources telling the fate of Prince Alexander's internment are considered in light of archeological data and new archive documents and photos including photos of stone sarcophagi found during the demolition of the church in 1930.


2021 ◽  
Vol 49 (3) ◽  
pp. 12-32

A brief overview of the main historical events that accompanied the formation and establishment of the Laboratory of Oceanology in the Academy of Sciences in 1941 is given. Then, a few years later, the Laboratory was transformed into the Institute of Oceanology, the director of which was appointed the Minister of the Merchant Fleet of the USSR, Academician P. P. Shirshov. By his initiative in 1949, the Institute became the owner of its first large research vessel "Vityaz". It is shown that the entire history of the institute and its research team was primarily based on the development and generalization of the results of regular sea and ocean expeditions. The article provides general information about the results obtained in the recent past, and their development and deepening in the works of the institute at present.


Author(s):  
Chia-An Wu ◽  
Andrew Squelch ◽  
Zhonghua Sun

Aim: To determine the optimal image segmentation protocol that minimizes the amount of manual intervention and correction required while extracting 3D model geometries suitable for 3D printing of aortic dissection (AD) using open-source software. Materials & methods: Computed tomography images of two type B AD cases were selected with images segmented using a 3D Slicer to create a hollow model containing the aortic wall and intimal tear. A workflow composed of filters, lumen extraction and outer surface creation was developed. Results & conclusion: The average difference in measurements at 14 anatomical locations between the Standard Tessellation Language file and the computed tomography image for cases 1 and 2 were 0.29 and 0.32 mm, respectively. The workflow for the image segmentation of type B AD was able to produce a high-accuracy 3D-printed model in a short time through open-source software.


2014 ◽  
Vol 191 (4S) ◽  
Author(s):  
Anees Fazili ◽  
Jennifer Gordetsky ◽  
Ronald Rabinowitz

Sign in / Sign up

Export Citation Format

Share Document