scholarly journals The Nexus of Art and Science: Creating Art Medals in the Chemistry Lab, Using Graphite Molds

2021 ◽  
Vol 4 (1) ◽  
pp. 32
Author(s):  
Karjo Megan ◽  
Constantina Sinani ◽  
Coryn Le ◽  
Mark A. Benvenuto
Keyword(s):  
Heat Sink ◽  
Materials Science ◽  
Eutectic Point ◽  
Metal Alloys ◽  
Science And Engineering ◽  
Art And Science ◽  
Science Laboratories ◽  
The Creation ◽  
Made In

The idea of graphing what is called the lead-tin eutectic point when alloys are produced from elemental lead and tin metals may be very common and established in chemistry and materials science laboratories. Producing art medals from the alloys that are made in such experiments is decidedly not. We will present how the lead-tin eutectic experiment can be performed in the chemistry lab, and how graphite blocks can be used as both mold and heat sink for the creation of art medals, utilizing metal alloys produced by students in the laboratory. The process brings together art, science and engineering in a single experience. We conclude that this has been found to be beneficial for students, yet is a technique that can be utilized by virtually any person who wishes to experiment and create with low-melting metal alloys.

X-ray mapping without STEM

1994 ◽  
Vol 52 ◽  
pp. 508-509
Author(s):  
Judith M. Brock ◽  
Max T. Otten
Keyword(s):  
Life Science ◽  
Materials Science ◽  
Chemical Elements ◽  
Full Description ◽  
Scanning System ◽  
Elemental Distribution ◽  
X Ray ◽  
Transmission Electron ◽  
Distribution Of Elements ◽  
Made In

A knowledge of the distribution of chemical elements in a specimen is often highly useful. In materials science specimens features such as grain boundaries and precipitates generally force a certain order on mental distribution, so that a single profile away from the boundary or precipitate gives a full description of all relevant data. No such simplicity can be assumed in life science specimens, where elements can occur various combinations and in different concentrations in tissue. In the latter case a two-dimensional elemental-distribution image is required to describe the material adequately. X-ray mapping provides such of the distribution of elements.The big disadvantage of x-ray mapping hitherto has been one requirement: the transmission electron microscope must have the scanning function. In cases where the STEM functionality – to record scanning images using a variety of STEM detectors – is not used, but only x-ray mapping is intended, a significant investment must still be made in the scanning system: electronics that drive the beam, detectors for generating the scanning images, and monitors for displaying and recording the images.

Everything you've always wanted to know about what your students think they know but were afraid to ask.

2000 ◽  
Vol 632 ◽  
Author(s):  
Eric Werwa
Keyword(s):  
Materials Science ◽  
Science Museum ◽  
Science And Engineering ◽  
Museum Exhibit ◽  
Museum Visitors ◽  
The Public ◽  
Materials Science And Engineering ◽  
Properties Of Materials ◽  
Formal Science ◽  
Lay Public

ABSTRACTA review of the educational literature on naive concepts about principles of chemistry and physics and surveys of science museum visitors reveal that people of all ages have robust alternative notions about the nature of atoms, matter, and bonding that persist despite formal science education experiences. Some confusion arises from the profound differences in the way that scientists and the lay public use terms such as materials, metals, liquids, models, function, matter, and bonding. Many models that eloquently articulate arrangements of atoms and molecules to informed scientists are not widely understood by lay people and may promote naive notions among the public. Shifts from one type of atomic model to another and changes in size scales are particularly confusing to learners. People's abilities to describe and understand the properties of materials are largely based on tangible experiences, and much of what students learn in school does not help them interpret their encounters with materials and phenomena in everyday life. Identification of these challenges will help educators better convey the principles of materials science and engineering to students, and will be particularly beneficial in the design of the Materials MicroWorld traveling museum exhibit.

Qualitative simulation and related approaches for the analysis of dynamic systems

2004 ◽  
Vol 19 (2) ◽  
pp. 93-132 ◽  
Author(s):  
HIDDE DE JONG
Keyword(s):  
Qualitative Analysis ◽  
Dynamic Systems ◽  
Quantitative Information ◽  
Simulation Methods ◽  
Science And Engineering ◽  
Computational Framework ◽  
Combinatorial Explosion ◽  
Qualitative Simulation ◽  
Qualitative Phase ◽  
Made In

Methods for qualitative simulation allow predictions on the dynamics of a system to be made in the absence of quantitative information, by inferring the range of possible qualitative behaviors compatible with the structure of the system. This article reviews QSIM and other qualitative simulation methods. It discusses two problems that have seriously compromised the application of these methods to realistic problems in science and engineering: the occurrence of spurious behavior predictions and the combinatorial explosion of the number of behavior predictions. In response to these problems, related approaches for the qualitative analysis of dynamic systems have emerged: qualitative phase-space analysis and semi-quantitative simulation. The article argues for a synthesis of these approaches in order to obtain a computational framework for the qualitative analysis of dynamic systems. This should provide a solid basis for further upscaling and for the development of model-based reasoning applications of a wider scope.

scholarly journals Metal Nano/Microparticles for Bioapplications

2021 ◽  
Vol 22 (9) ◽  
pp. 4543
Author(s):  
Xuan-Hung Pham ◽  
Seung-min Park ◽  
Bong-Hyun Jun
Keyword(s):  
Materials Science ◽  
Functional Materials ◽  
Science And Engineering ◽  
Micro Particles ◽  
Materials Science And Engineering

Nano/micro particles are considered to be the most valuable and important functional materials in the field of materials science and engineering [...]

The Kaččā and the Pakkā: Disenchanting the Film Event in Pakistan

2020 ◽  
Vol 62 (2) ◽  
pp. 262-295
Author(s):  
Timothy P. A. Cooper
Keyword(s):  
British Empire ◽  
Affective Responses ◽  
British India ◽  
Film Exhibition ◽  
The Creation ◽  
First Contact ◽  
Made In

AbstractFor many city dwellers in Pakistan the distant memory of outdoor cinemas in their ancestral villages rekindles the thrill of first contact with film exhibition. This paper considers attempts made in colonial British India and postcolonial Pakistan to understand, wield, and benefit from the staging of such memorable and affective filmic events. In its cultivation of “cinema-minded” subjects, the British Empire commissioned studies of audiences and their reactions to film exhibition in hopes of managing the unruly morality and materiality of the cinematic apparatus. After Partition and the creation of the Dominion of Pakistan, similar studies continued, evincing a residual strategy of elicited contact. The elicitation of film contact aimed at the exertion and commandment of the event of film exhibition for the purposes of knowing their constituent subjects at a moment of malleability. Yet the Empire's struggle with the perceived problems of “Muslim tastes” and audience members’ ambivalence over rural screenings in post-Partition Pakistan calls for a reconsideration of the efficacy of these tactics. I argue that what complicated these encounters are affective responses that questioned the address, permissibility, and efficacy of film exhibition. In these tactics of elucidation, disenchantment, and denial, ruptures are refused and the new is dismissed as inoperable, incompatible, or impermissible.

scholarly journals 3D IMAGING OF INDIVIDUAL PARTICLES: A REVIEW

2012 ◽  
Vol 31 (2) ◽  
pp. 65 ◽  
Author(s):  
Eric Pirard
Keyword(s):  
Literature Review ◽  
Digital Imaging ◽  
Systems Analysis ◽  
3D Imaging ◽  
Materials Science ◽  
Recent Literature ◽  
Three Dimensional ◽  
Shape Estimation ◽  
Individual Particles ◽  
Made In

In recent years, impressive progress has been made in digital imaging and in particular in three dimensional visualisation and analysis of objects. This paper reviews the most recent literature on three dimensional imaging with a special attention to particulate systems analysis. After an introduction recalling some important concepts in spatial sampling and digital imaging, the paper reviews a series of techniques with a clear distinction between the surfometric and volumetric principles. The literature review is as broad as possible covering materials science as well as biology while keeping an eye on emerging technologies in optics and physics. The paper should be of interest to any scientist trying to picture particles in 3D with the best possible resolution for accurate size and shape estimation. Though techniques are adequate for nanoscopic and microscopic particles, no special size limit has been considered while compiling the review.

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