Trial production of γ-type energy filtering TEM

1995 ◽  
Vol 53 ◽  
pp. 604-605
Author(s):  
Y. Taniguchi ◽  
E. Nakazawa ◽  
S. Taya
Keyword(s):  
Magnetic Energy ◽  
Electron Optics ◽  
Electron Microscopic ◽  
Mass Spectrometers ◽  
Ion Optics ◽  
Energy Filtering ◽  
New Information ◽  
New Type ◽  
Fringing Fields

Imaging energy filters can add new information to electron microscopic images with respect to energy-axis, so-called electron spectroscopic imaging (ESI). Recently, many good results have been reported using this imaging technique. ESI also allows high-contrast observation of unstained biological samples, becoming a trend of the field of morphology. We manufactured a new type of energy filter as a trial production. This energy filter consists of two magnets, and we call γ-filter since the trajectory of electrons shows ‘γ’-shape inside the filter. We evaluated the new energyγ-filter TEM with the γ-filter.Figure 1 shows schematic view of the electron optics of the γ-type energy filter. For the determination of the electron-optics of the γ-type energy filter, we used the TRIO (Third Order Ion Optics) program which has been developed for the design of high resolution mass spectrometers. The TRIO takes the extended fringing fields (EFF) into consideration. EFF makes it difficult to design magnetic energy filters with magnetic sector fields.

Transmission Electron Microscopy of Protein Macromolecules

1971 ◽  
Vol 29 ◽  
pp. 424-425
Author(s):  
Henry S. Slayter
Keyword(s):  
Biological Systems ◽  
Metal Vapor ◽  
Resolving Power ◽  
Electron Microscopic ◽  
Chemical Methods ◽  
Molecular Weights ◽  
The Past ◽  
Physical Chemical ◽  
Transmission Electron

Electron microscopic methods have been applied increasingly during the past fifteen years, to problems in structural molecular biology. Used in conjunction with physical chemical methods and/or Fourier methods of analysis, they constitute powerful tools for determining sizes, shapes and modes of aggregation of biopolymers with molecular weights greater than 50, 000. However, the application of the e.m. to the determination of very fine structure approaching the limit of instrumental resolving power in biological systems has not been productive, due to various difficulties such as the destructive effects of dehydration, damage to the specimen by the electron beam, and lack of adequate and specific contrast. One of the most satisfactory methods for contrasting individual macromolecules involves the deposition of heavy metal vapor upon the specimen. We have investigated this process, and present here what we believe to be the more important considerations for optimizing it. Results of the application of these methods to several biological systems including muscle proteins, fibrinogen, ribosomes and chromatin will be discussed.

Determination of the phase structure of polymerblends by electron microscopy

1978 ◽  
Vol 36 (1) ◽  
pp. 492-493
Author(s):  
Dr. G. Kaemof
Keyword(s):  
Screw Extruder ◽  
Electron Microscopic ◽  
Thin Sections ◽  
Single Screw Extruder ◽  
Transmission Electron ◽  
The Matrix ◽  
Twin Screw ◽  
Special Case ◽  
Microscopic Investigations

A mixture of polycarbonate (PC) and styrene-acrylonitrile-copolymer (SAN) represents a very good example for the efficiency of electron microscopic investigations concerning the determination of optimum production procedures for high grade product properties.The following parameters have been varied:components of charge (PC : SAN 50 : 50, 60 : 40, 70 : 30), kind of compounding machine (single screw extruder, twin screw extruder, discontinuous kneader), mass-temperature (lowest and highest possible temperature).The transmission electron microscopic investigations (TEM) were carried out on ultra thin sections, the PC-phase of which was selectively etched by triethylamine.The phase transition (matrix to disperse phase) does not occur - as might be expected - at a PC to SAN ratio of 50 : 50, but at a ratio of 65 : 35. Our results show that the matrix is preferably formed by the components with the lower melting viscosity (in this special case SAN), even at concentrations of less than 50 %.

Polarity Determination in Sphalerite and Wurtzite Structures

1990 ◽  
Vol 48 (2) ◽  
pp. 500-501
Author(s):  
Stuart McKernan ◽  
C. Barry Carter
Keyword(s):  
Opposite Polarity ◽  
Single Domain ◽  
Polar Material ◽  
Electron Microscopic ◽  
Dynamical Interaction ◽  
X Ray ◽  
Polarity Determination ◽  
The Absolute ◽  
Microscopic Techniques

The determination of the absolute polarity of a polar material is often crucial to the understanding of the defects which occur in such materials. Several methods exist by which this determination may be performed. In bulk, single-domain specimens, macroscopic techniques may be used, such as the different etching behavior, using the appropriate etchant, of surfaces with opposite polarity. X-ray measurements under conditions where Friedel’s law (which means that the intensity of reflections from planes of opposite polarity are indistinguishable) breaks down can also be used to determine the absolute polarity of bulk, single-domain specimens. On the microscopic scale, and particularly where antiphase boundaries (APBs), which separate regions of opposite polarity exist, electron microscopic techniques must be employed. Two techniques are commonly practised; the first [1], involves the dynamical interaction of hoLz lines which interfere constructively or destructively with the zero order reflection, depending on the crystal polarity. The crystal polarity can therefore be directly deduced from the relative intensity of these interactions.

TYPES OF CULTURAL WARS: FORMALIZATION, MEDIA REALITY, AUDIENCE REACTIONS

2017 ◽  
pp. 53-58
Author(s):  
Tetiana Zemliakova
Keyword(s):  
Ethnic Group ◽  
Information Society ◽  
Information Age ◽  
Identity Crisis ◽  
Main Function ◽  
Intellectual Skill ◽  
Cultural Codes ◽  
New Information ◽  
New Type ◽  
Development Of Identity

The article makes a comprehensive attempt to classify the cultural war as a semantic manipulative phenomenon in a new type of information society. The features and causes of development of identity crisis in the context of semantic manipulations of media reality are outlined. The urgency of the research is that a new information age is filled with insidious meanings that offers a system of the same insidious information procedural “performances”. In its turn they are embodied in long held images, forming an entirely new semantic system, and creating a space of permanent action, in which the choice remains for a person of a new information age, who reveals a considerable level of intellectual skill through dialogue or protest, or, on the contrary, acts according to normalized, “dictated”, imposed cult, from which the principles of whole culture are emerging. The result of individual outbreaks of resistance to “information performances” through the collective will of the nation, which seems to be a muscle, which is intensively practiced in the light of the Rusian-Ukrainian war, is justified by the need to preserve the skills of the society to create the nation, or the nation’s identity. One can concede that at the level of nation there is emergence of greatest amount of conflicts associated with the attempt to destroy the cultural core (the nucleus of the nation), which is formed from the norms, standards, values of a certain ethnic group. The main function of such a nucleus is providing for a system of formed cultural codes in order to preserve the nation’s identity. Summing up the results of the research, the author comes to the conclusion that the typology of the cultural war proposed is conditional, but it gives grounds to talk about the symptomatic appearance of semantic disorientation and the identity crisis. In this situation, understanding and differentiation on the basis of own “mental identifier” will become extremely important in order to consolidate the individuals in terms of new conditions.

A new type of incubation apparatus for the determination of metabolically produced 14CO2

1966 ◽  
Vol 14 (2) ◽  
pp. 290-295 ◽  
Author(s):  
Marco Baggiolini ◽  
Marcel H. Bickel
Keyword(s):  
New Type

On the determination of thermospheric atomic-oxygen densities with rocket-borne mass spectrometers

1972 ◽  
Vol 77 (10) ◽  
pp. 1987-1990 ◽  
Author(s):  
Alfred O. Nier ◽  
J. L. Hayden ◽  
J. B. French ◽  
N. M. Reid
Keyword(s):  
Atomic Oxygen ◽  
Mass Spectrometers

Optimal Robust Fixture Configuration Design Using Computer Experiment

Manufacturing ◽  
2003 ◽  
Author(s):  
L. Shelley Xie ◽  
Agus Sudjianto
Keyword(s):  
Evaluation Method ◽  
Robustness Analysis ◽  
Optimal Solution ◽  
Computer Experiment ◽  
System Response ◽  
New Approach ◽  
New Information ◽  
Reliability Method ◽  
Fixture Configuration

A new FEA based design approach of optimal robust fixture configuration is proposed in this paper, which employs a surrogate model through computer experiment to significantly reduce the intensive computing effort involving numerous FEA system response evaluations. The effects of the fixture variability to the workpiece performance variability are assessed through an efficient robustness evaluation method, First Order Reliability Method (FORM), based on the surrogate computer model. Not restricted to primary datum surface, this new approach enables simultaneous determination of robust locator/clamp locations and clamping forces for a deformable workpiece and thus captures interaction between locating and clamping. The effectiveness of this approach is illustrated though an application example. The results of robustness analysis reveal new information and suggest that the optimal solution resulted from deterministic optimization may not be the best solution when the design is subjected to variability.

scholarly journals INFLUENCE OF MARKETING TOOLS ON IMPROVING PRODUCT QUALITY

2020 ◽  
Vol 15 (1) ◽  
pp. 111-116
Author(s):  
Margarita Karimova ◽  
Nazira Sagitova
Keyword(s):  
Quality Management ◽  
Product Quality ◽  
Building Materials ◽  
Marketing Research ◽  
Target Audience ◽  
New Type ◽  
Quality Of Products ◽  
Object Of Study ◽  
Competitive Product

The high quality of products and services is a guarantee of the company’s success in the market. The purpose of our study is to assess the feasibility of developing a new competitive product, taking into account the preferences of consumers. To achieve this, marketing tools aimed at product quality management were used. In the course of the work, a full cycle of marketing research was conducted, including questionnaires, the formation of a portrait of a consumer of products, and economic calculations. Object of study - a large regional enterprise - a center for sales of building materials. The work performed at the junction of two scientific fields (marketing and quality management) provided a synergistic effect in terms of cost reduction when creating a competitive product, and also allowed us to offer original recommendations for improving quality in general. According to the results of marketing research, which consisted in questioning the target audience using the free “Google Forms” service, such characteristics as “assortment” and “appearance” were recognized as the least satisfying consumers in the existing market for facing bricks. Based on the detailed analysis, a new type of product (“Chocolate velvet” brick) was developed that meets the wishes of the target audience of customers. An additional positive effect from the transition of the enterprise to its production in the amount of 91,600 conventional units per month will be an increase in profit, compared to 2017 (942,500 rubles), by 1,1533240 rubles, the expected efficiency of transferring an innovative product to production (profit growth / costs) will be 1.22. Determination of consumer requirements specifies the technological task during the transition to the production of a new type of product. Replacing the production of old-style finishing bricks with the release of a new type of product allows you to create a customized product that is guaranteed to find its customer due to its high customer loyalty

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