MECHANICS OF THE SUSPENDED LAYER WITH POLYDISPERSE PARTICLES IN CONTINUOUS AIR MIXERS

The quality of mixing of dry building mixes largely depends on the specialized equipment that is used in this process. For the best mixing of dry building mixes, continuous pneumatic mixers are used. Continuous air mixers are the most effective equipment for producing dry building mixes with a higher degree of uniformity. This indicator allows to achieve a better final product. Currently, there are a large number of continuous air mixers that are actively being modernized both in our country and abroad. The article presents a technique that describes the mechanics of a suspended layer with polydisperse particles in the working volume of the displacement palette of a continuous air mixer. The method is based on research conducted by the authors of the article, taking into account experimental data obtained by other scientists. This paper summarizes an approach to numerical modeling of a suspended layer with particles of different dispersion (for example, for dry building mixes) and density. The dependences of the layer boundary, its porosity, and speed parameters on the particle diameters, geometric parameters of the mixing chamber, and other technological values that affect the suspended layer inside the chamber are established. The article presents an algorithm for calculating the mechanics of the weighted layer, which proved itself in numerical modeling of the layer with high accuracy of calculations, which is later confirmed by the necessary amount of experimental data.

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Influence of seismic wave frequency on the quality of the landslide surface exploration in the light of numerical modeling

Geoinformatica Polonica ◽

10.2478/v10300-012-0015-0 ◽

2013 ◽

Vol 12 (1) ◽

Author(s):

Rafał Pilecki

Keyword(s):

Numerical Modeling ◽

Seismic Wave ◽

Wave Frequency ◽

Surface Exploration

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Орошение томата F1 Донской в открытом грунте Московской области

Kartofel` i ovoshi ◽

10.25630/pav.2019.29.90.002 ◽

2019 ◽

Author(s):

D.I. Engalychev ◽

N.A. Engalycheva ◽

A.M. Menshikh

Keyword(s):

Experimental Data ◽

Agricultural Technology ◽

Tomato Fruits ◽

River Floodplain ◽

Yield And Quality ◽

Open Ground ◽

Alluvial Meadow ◽

Standard Production ◽

Moscow River

Представлены экспериментальные данные о влиянии капельного орошения на урожайность и качество плодов томата при выращивании культуры в открытом грунте Московской области. На плодородных аллювиальных луговых почвах Москворецкой поймы при соблюдении агротехники без орошения в среднем за три года исследований в полевых условиях получена урожайность томата F1 Донской 31,9 т/га, с орошением 48,5 т/га, в т.ч. стандартной продукции 42,6 т/га.The article presents experimental data on the effect of drip irrigation on the yield and quality of tomato fruits when growing crops in open ground of the Moscow Region. On fertile alluvial meadow soils of the Moscow river floodplain, with the observance of agricultural technology without irrigation, the field yield of tomato hybrid F1 Donskoi on average for three years of research was 31.9 t/ha, with irrigation 48.5 t/ha, incl. standard production 42.6 t/ha.

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TINGKAT KEAKURATAN DAN KEBERTERIMAAN TERJEMAHAN KALIMAT YANG MENGAKOMODASI TINDAK TUTUR KOMISIF PADA NOVEL INSURGENT (THE ACCURACY AND ACCEPTABILITY OF TRANSLATION ON THE SENTENCES WHICH ACCOMODATE COMMISSIVE SPEECH ACT IN THE INSURGENT NOVEL)

Widyaparwa ◽

10.26499/wdprw.v45i2.218 ◽

2017 ◽

Vol 45 (2) ◽

pp. 151-164

Author(s):

Novita Sumarlin Putri

Keyword(s):

Focus Group ◽

Focus Group Discussion ◽

Speech Act ◽

Group Discussion ◽

Document Analysis ◽

High Accuracy ◽

Pragmatic Approach ◽

Componential Analysis ◽

Pragmatic Aspects

Tindak tutur komisif merupakan salah satu aspek pragmatik yang harus diperhatikan oleh penerjemah ketika menerjemahkan teks. Hal itu dilakukan agar menghasilkan terjemahan yang berkualitas dari aspek keakuratan dan keberterimaan. Berdasarkan alasan tersebut, penelitian ini bertujuan mendiskripsikan tingkat keakuratan dan keberterimaan terjemahan kalimat yang mengakomodasi tindak tutur komisif dengan pendekatan pragmatik. Data yang digunakan ialah tuturan komisif dan hasil penilaian kualitas terjemahan. Data bersumber dari novel Insurgent karya Veronica Roth dan informan. Data dikumpulkan dengan cara analisis dokumen, kuesioner dan Focus Group Discussion. Selanjutnya, data dianalisis dengan cara analisis domain, taksonomi, komponensial, dan tema budaya. Hasil penelitian ini menunjukkan bahwa terjemahan dalam novel Insurgent mempunyai nilai keakuratan dan keberterimaan yang cukup tinggi. Berdasarkan penelitian ini, dapat disimpulkan bahwa tingkat keakuratan dan keberterimaan pada setiap jenis tindak tutur komisif memiliki dampak terhadap kualitas keseluruhan terjemahan kalimat yang mengandung tindak tutur komisif.Commissive speech act is one of the pragmatic aspects to regard by the translator in translating the text. It aims to produce a qualified translation in regarding accuracy and acceptability aspects. According to the aspects, this research aims to describe accuracy and acceptability of translation in sentences which accommodate commissive speech act using pragmatic approach. The data used is commissive speech and qualitative translation value result. The sources of the data are an Insurgent novel by Veronica Roth and informants. The data were collected through document analysis, questionnaire, and Focus Group Discussion then analyzed the domain, taxonomic, componential analysis, and cultural theme. The result shows that translation in the Insurgent novel has high accuracy and acceptability values. This research concludes that the accuracy and acceptability level in each commissive speech act has an impact on quality of whole translated sentences which contain commissive speech act.

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Cryo-EM model validation recommendations based on outcomes of the 2019 EMDataResource challenge

Nature Methods ◽

10.1038/s41592-020-01051-w ◽

2021 ◽

Vol 18 (2) ◽

pp. 156-164 ◽

Cited By ~ 4

Author(s):

Catherine L. Lawson ◽

Andriy Kryshtafovych ◽

Paul D. Adams ◽

Pavel V. Afonine ◽

Matthew L. Baker ◽

...

Keyword(s):

Electron Microscopy ◽

Structure Data ◽

Model Evaluation ◽

Data Bank ◽

High Accuracy ◽

Atomic Resolution ◽

Software Developers ◽

Data Archives ◽

Modeling Software

AbstractThis paper describes outcomes of the 2019 Cryo-EM Model Challenge. The goals were to (1) assess the quality of models that can be produced from cryogenic electron microscopy (cryo-EM) maps using current modeling software, (2) evaluate reproducibility of modeling results from different software developers and users and (3) compare performance of current metrics used for model evaluation, particularly Fit-to-Map metrics, with focus on near-atomic resolution. Our findings demonstrate the relatively high accuracy and reproducibility of cryo-EM models derived by 13 participating teams from four benchmark maps, including three forming a resolution series (1.8 to 3.1 Å). The results permit specific recommendations to be made about validating near-atomic cryo-EM structures both in the context of individual experiments and structure data archives such as the Protein Data Bank. We recommend the adoption of multiple scoring parameters to provide full and objective annotation and assessment of the model, reflective of the observed cryo-EM map density.

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A Cyclic Plasticity Modeling for Uniaxial and Multiaxial Ratcheting Simulation of Austenitic Steel

Volume 6: Materials and Fabrication, Parts A and B ◽

10.1115/pvp2012-78803 ◽

2012 ◽

Author(s):

Salim Meziani ◽

Lynda Djimli

Keyword(s):

Experimental Data ◽

Stainless Steel ◽

Constitutive Model ◽

Data Base ◽

Good Choice ◽

Cyclic Plasticity ◽

Strain History ◽

Material Parameters ◽

Plastic Shakedown

The first objective of this paper investigates the influence of the previous strain history on ratcheting of the 304 L stainless steel on ambient temperature. The identification is done using the Chaboche constitutive model. New tests were performed where different strain-controlled histories have been applied prior to ratcheting tests. It is demonstrated that under the same conditions, one can observe ratcheting, plastic shakedown or elasticity according to the prior strain-controlled history. The second objective points out the correlation between the experimental data base devoted to the identification of the material parameters and the quality of the predictions in cyclic plasticity. The results suggest that the choice of the tests should be closely linked to the capabilities of the model. In particular, the presence of non proportional strain-controlled tests in the data base may be not a good choice if the model itself is not able to represent explicitly such a character.

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Numerical modeling of seismic waves by discontinuous spectral element methods

ESAIM Proceedings and Surveys ◽

10.1051/proc/201861001 ◽

2018 ◽

Vol 61 ◽

pp. 1-37 ◽

Cited By ~ 7

Author(s):

Paola F. Antonietti ◽

Alberto Ferroni ◽

Ilario Mazzieri ◽

Roberto Paolucci ◽

Alfio Quarteroni ◽

...

Keyword(s):

Numerical Modeling ◽

Discontinuous Galerkin ◽

Large Scale ◽

Seismic Waves ◽

Spectral Element ◽

Fully Discrete ◽

Time Marching ◽

Space Discretization ◽

Large Earthquakes

We present a comprehensive review of Discontinuous Galerkin Spectral Element (DGSE) methods on hybrid hexahedral/tetrahedral grids for the numerical modeling of the ground motion induced by large earthquakes. DGSE methods combine the exibility of discontinuous Galerkin meth-ods to patch together, through a domain decomposition paradigm, Spectral Element blocks where high-order polynomials are used for the space discretization. This approach allows local adaptivity on discretization parameters, thus improving the quality of the solution without affecting the compu-tational costs. The theoretical properties of the semidiscrete formulation are also revised, including well-posedness, stability and error estimates. A discussion on the dissipation, dispersion and stability properties of the fully-discrete (in space and time) formulation is also presented. Here space dis-cretization is obtained based on employing the leap-frog time marching scheme. The capabilities of the present approach are demonstrated through a set of computations of realistic earthquake scenar-ios obtained using the code SPEED (http://speed.mox.polimi.it), an open-source code specifically designed for the numerical modeling of large-scale seismic events jointly developed at Politecnico di Milano by The Laboratory for Modeling and Scientific Computing MOX and by the Department of Civil and Environmental Engineering.

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Thermal Laser Separation – A Novel Dicing Technology Fulfilling the Demands of Volume Manufacturing of 4H-SiC Devices

Materials Science Forum ◽

10.4028/www.scientific.net/msf.821-823.528 ◽

2015 ◽

Vol 821-823 ◽

pp. 528-532 ◽

Cited By ~ 5

Author(s):

Dirk Lewke ◽

Karl Otto Dohnke ◽

Hans Ulrich Zühlke ◽

Mercedes Cerezuela Barret ◽

Martin Schellenberger ◽

...

Keyword(s):

Experimental Data ◽

Process Control ◽

Tool Wear ◽

Large Scale ◽

State Of The Art ◽

Scale Production ◽

High Quality ◽

Large Scale Production ◽

Laser Separation

One challenge for volume manufacturing of 4H-SiC devices is the state-of-the-art wafer dicing technology – the mechanical blade dicing which suffers from high tool wear and low feed rates. In this paper we discuss Thermal Laser Separation (TLS) as a novel dicing technology for large scale production of SiC devices. We compare the latest TLS experimental data resulting from fully processed 4H-SiC wafers with results obtained by mechanical dicing technology. Especially typical product relevant features like process control monitoring (PCM) structures and backside metallization, quality of diced SiC-devices as well as productivity are considered. It could be shown that with feed rates up to two orders of magnitude higher than state-of-the-art, no tool wear and high quality of diced chips, TLS has a very promising potential to fulfill the demands of volume manufacturing of 4H-SiC devices.

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Textiles and perishable materials

The Oxford Handbook of the European Iron Age ◽

10.1093/oxfordhb/9780199696826.013.6 ◽

2018 ◽

Author(s):

Johanna Banck-Burgess

Keyword(s):

Experimental Data ◽

Everyday Life ◽

Iron Age ◽

Raw Materials ◽

Visual Representations ◽

Detailed Knowledge ◽

Textile Production ◽

Funerary Rituals ◽

The Status

This chapter challenges traditional views on Iron Age dress. Recent research has greatly enhanced our understanding of how textiles were manufactured in Iron Age Europe. The variety of qualities, textures, techniques, raw materials, colours, and cuts give insights into the detailed knowledge of the craftspeople involved. Textiles used for dress, blankets, or furniture fittings were appreciated not only for their appearance, but also for the quality of the work. In everyday life, their optical qualities were used to express and signal gender, social roles and status, while the labour expended on textiles found in wealthy burials underlines both the status of the deceased and the extent of conspicuous consumption in funerary rituals—for instance, for wrapping grave furniture and goods. The chapter also looks at experimental data showing how labour-intensive textile production was, and the types of clothing and accessories found in different archaeological contexts or depicted in visual representations.

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The Revised Universal Slope Method to Predict the Low-Cycle Fatigue Lives of Elbow and Tee Pipes

Journal of Pressure Vessel Technology ◽

10.1115/1.4037002 ◽

2017 ◽

Vol 139 (5) ◽

Cited By ~ 1

Author(s):

Hiun Nagamori ◽

Koji Takahashi

Keyword(s):

Experimental Data ◽

Internal Pressure ◽

Low Cycle Fatigue ◽

Experimental Studies ◽

High Accuracy ◽

Universal Method ◽

Cycle Fatigue ◽

Element Analysis ◽

Slope Method ◽

Stress States

The stress states of elbow and tee pipes are complex and different from those of straight pipes. The low-cycle fatigue lives of elbows and tees cannot be predicted by Manson's universal slope method; however, a revised universal method proposed by Takahashi et al. was able to predict with high accuracy the low-cycle fatigue lives of elbows under combined cyclic bending and internal pressure. The objective of this study was to confirm the validity of the revised universal slope method for the prediction of low-cycle fatigue behaviors of elbows and tees of various shapes and dimensions under conditions of in-plane bending and internal pressure. Finite element analysis (FEA) was carried out to simulate the low-cycle fatigue behaviors observed in previous experimental studies of elbows and tees. The low-cycle fatigue behaviors, such as the area of crack initiation, the direction of crack growth, and the fatigue lives, obtained by the analysis were compared with previously obtained experimental data. Based on this comparison, the revised universal slope method was found to accurately predict the low-cycle fatigue behaviors of elbows and tees under internal pressure conditions regardless of differences in shape and dimensions.

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