A RESEARCH STUDY TO ADVANCE THE STATE-OF-THE-ART OF SOLID PROPELLANT GRAIN DESIGN

A RESEARCH STUDY TO ADVANCE THE STATE OF THE ART OF SOLID PROPELLANT GRAIN DESIGN

10.21236/ad0406883 ◽

1963 ◽

Author(s):

THIOKOL CHEMICAL CORP ELKTON MD

Keyword(s):

Solid Propellant ◽

Research Study ◽

State Of The Art ◽

The State

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Solid Propellant Formulations: A Review of Recent Progress and Utilized Components

Materials ◽

10.3390/ma14216657 ◽

2021 ◽

Vol 14 (21) ◽

pp. 6657

Author(s):

Kinga Lysien ◽

Agnieszka Stolarczyk ◽

Tomasz Jarosz

Keyword(s):

Solid Propellant ◽

Recent Progress ◽

State Of The Art ◽

The State ◽

Solid Propellants ◽

Fuel Additives ◽

Oxidizing Agents

The latest developments in solid propellants and their components are summarized. Particular attention is given to emerging energetic binders and novel, ‘green’ oxidizing agents and their use in propellant formulations. A brief overview of the latest reports on fuel additives is included. Finally, a summary of the state of the art and challenges in its development are speculated on.

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The English Textbook. Tensions from an Intercultural Perspective

GiST Education and Learning Research Journal ◽

10.26817/16925777.402 ◽

2018 ◽

pp. 230-259

Author(s):

Astrid Nuñez-Pardo

Keyword(s):

Key Words ◽

Critical Analysis ◽

Research Study ◽

State Of The Art ◽

Review Article ◽

The State ◽

Ongoing Research ◽

Publishing Houses ◽

English Textbooks

This review article addresses tensions, critiques and trends that are still latent in mainstream research on English textbooks that have looked at their intercultural aspects, which need to be explored from the perspective of critical interculturality to resist the instrumental, regulatory, homogenizing and commercial nature of textbooks developed by foreign and local publishing houses. The manuscript firstly elaborates on the textbook as an object of research; secondly, it discusses critical analysis of the content of textbooks; and thirdly, the text concludes by pondering critical interculturality, as a decolonial alternative, to make possible the construction of criteria of being, knowledge and power to orient the development of the English textbook, and move away from a de-contextualised textbook toward a desirable contextualised one. This article encompasses the state of the art supporting an ongoing research study on the English textbook from the perspective of critical interculturality that is being conducted within the doctoral programme1 in Education at Universidad Pedagógica and Tecnológica de Colombia (UPTC), conducted during 2014-2018, and supported by Universidad Externado de Colombia, Bogotá. Key words: English textbook, critical analysis, interculturality, critical interculturality 1 Decolonising the English Textbook: A Venture from Critical Interculturality

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Analysis and Design of Plastic Storage Tanks

Journal of Engineering for Industry ◽

10.1115/1.3591580 ◽

1969 ◽

Vol 91 (2) ◽

pp. 400-404

Author(s):

G. B. Moody

Keyword(s):

Aluminum Alloy ◽

Research Study ◽

State Of The Art ◽

Computer Programs ◽

The State ◽

Storage Tanks ◽

Analysis And Design ◽

Proper Method

The author has designed over one hundred major tanks that store plastic powders and pellets. This article gives some practical examples of how to analyze and design plastic storage tanks. Examples were taken from files of completed projects. All tanks are classified as either shallow or deep; an example of each is given. A series of four articles was written to report on a study about vessels made of aluminum or steel, and joined by bolting or welding. The first three articles are “Bolted Aluminum—Alloy Connections,” “Welded Tanks for Dry Bulk Plastic Storage,” and “Bolted Tanks for Storage of Plastics.” The state-of-the-art is presented. Although computer programs have been developed, some equations still used are empirical, and the assumptions are conservative. Not all authorities agree on the proper method of analysis. A research study of the whole tank, rather than its parts, should be made.

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Practical Picture Processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051700 ◽

1974 ◽

Vol 32 ◽

pp. 338-339

Author(s):

T. A. Welton

Keyword(s):

Radiation Damage ◽

Coherence Length ◽

Spatial Information ◽

State Of The Art ◽

Coherent Radiation ◽

The State ◽

Energy Spread ◽

Electron Micrograph ◽

Picture Processing ◽

Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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