Project

2017 ◽  
Author(s):  
Charles W. Eagles
Keyword(s):  
Racial Bias ◽  
Original Design ◽  
History Textbook ◽  
Historical Scholarship ◽  
New Type ◽  
Mississippi History

The Mississippi History Project started in 1970 and received funding from the Southern Education Foundation. The Project sought to create a distinctively new type of history textbook that included the silent, the unnamed, and the dispossessed and that reflected modern historical scholarship. It wanted to correct the racial bias that dominate other textbooks. The radical book also featured original design and format features.

Writers

2017 ◽  
Author(s):  
Charles W. Eagles
Keyword(s):  
Nineteenth Century ◽  
White Male ◽  
Ninth Grade ◽  
Late Nineteenth Century ◽  
History Textbook ◽  
Male And Female ◽  
Black And White ◽  
Late Nineteenth ◽  
Mississippi History ◽  
Tougaloo College

Jim Loewen, a sociologist, and Charles Sallis, a historian, assembled a diverse team of colleagues and students to produce a revisionist ninth-grade Mississippi history textbook. In addition to several disciplines, the group included black and white, male and female, northern and southerner. They drew on earlier tentative interracial contacts led by Ernst Borinski between the black Tougaloo College and the nearby white Millsaps College, both in Jackson, Mississippi. Loewen had published a book on the Mississippi Chinese, and Sallis had written about Mississippi politics in the late nineteenth century.

Research on 3D Geomechanics Model Test for a Large-Scale Offspur Tunnel Project

2006 ◽  
Vol 326-328 ◽  
pp. 557-560
Author(s):  
Qiang Yong Zhang ◽  
Shu Cai Li ◽  
X.H. Guo
Keyword(s):  
Model Test ◽  
Large Scale ◽  
Similar Material ◽  
Original Design ◽  
Test Installation ◽  
Deformation Properties ◽  
Hydraulic Equipment ◽  
New Type ◽  
Design And Manufacture ◽  
Test Rack

Geomechanics model test has some distinctive advantages in simulating changing laws of stress and strain of rockmass as well as failure mechanism of surrounding rockmass of tunnel. In order to systematically study mechanics deformation properties of a large-scale offspur tunnel under excavation state, we design and manufacture a large scale 3D model test rack installation with hydraulic equipment. The test rack is 3.7 meters long, 2.2 meters wide and 4 meters high, which is the largest 3D geomechanics model test rack in present Chinese communication trades. The new-type similar material of model is a kind of cementitious composite which is mixed with iron ore powder, blanc fix, quartz sand, rosin, industrial alcohol and gypsum powder. 3D geomechanics model test for a large-scale offspur tunnel is carried out by utilizing the test installation and the similar material. The original design and construction of the offspur tunnel has been effectively optimized by results from model test.

scholarly journals Design Of Intelligent Balcony Agricultural Cultivation Equipment

2021 ◽  
Vol 233 ◽  
pp. 01126
Author(s):  
Wenxiong Yang
Keyword(s):  
Control System ◽  
Environmental Factors ◽  
Automatic Control ◽  
Nutrient Solution ◽  
Original Design ◽  
Growth Environment ◽  
Mosquito Breeding ◽  
New Type ◽  
Soilless Cultivation ◽  
Closed Structure

The original design of a new type of intelligent balcony agricultural cultivation equipment, the equipment mainly includes two parts: cultivation room and cultivation trough. The cultivation bottom trough is filled with soilless cultivation nutrient solution to provide nutrition for the growth of crop seedlings. The cultivation chamber can control the growth environment of seedlings. The equipment is also designed with an automatic control system to monitor the environmental factors of the air in the cultivation room and the nutrient components in the nutrient solution. The equipment adopts an integral closed structure, which can prevent mosquito breeding and bird invasion, and is suitable for agricultural planting and leisure use of family balcony.

scholarly journals The New Theatrical Buildings of Moscow in XXI Century (on the Hidden Theatres)

2018 ◽  
pp. 55-65
Author(s):  
Alexander V. Anisimov
Keyword(s):  
Original Design ◽  
Financial Problem ◽  
The Third ◽  
The Past ◽  
New Type ◽  
Suitable Site ◽  
Opera House ◽  
Performing Art ◽  
Different Levels ◽  
Sophisticated Technology

Over the past three decades, the number of theater groups in Moscow has increased several times compared to the Soviet era. In the past, the theaters were only state and strictly divided into all-union, republican, Moscow and departmental. And now they are born and die, but still multiply, their number is even difficult to determine - it's about two hundred. The quantitative boom is accompanied by an active search for new forms of performing art, for which halls of a new type with unprecedented stage equipment are needed. Prosperous theaters tend to have their own new houses with original architecture and modern sophisticated technology. Far from everyone succeed at this. The financial problem occurs everywhere, and there are also difficulties in finding a suitable site on the territory of the capital. Many talented teams are forced to look for original ways of financing for construction or at least finishing their interiors and acquiring stage equipment. The situation is saved by cooperation with sponsors and investors, who include theaters in their large facilities under certain conditions, which are dictated by the city's authorities for the allocation of a favorable site. The article discusses three new theatrical objects that appeared in Moscow over thelast decade. Two of them (drama theaters) are built as parts oflarge multifunctional complexes. They arelocated on thelargest highway - the Garden Ring (Malaya Sukharevskaya Square) opposite each other. The third - the Helikon Opera house in the very center of the capital - uses the historic restored rooms of the old city manor and the newly created hall on the site of the former courtyard with the preservation of the old architecture elements. All three theaters have an original architectural appearance of their interiors, modern technological equipment of different levels and variously transformable scenes and halls. The author's search for original design and constructive solutions of the main premises is of great interest. Famous Moscow architects participated in the development of the buildings.

The Microstructure of Shock-Synthesized Diamond

1967 ◽  
Vol 25 ◽  
pp. 324-325
Author(s):  
Lucien F. Trueb
Keyword(s):  
Single Crystals ◽  
Preferred Orientation ◽  
High Magnification ◽  
Texture Pattern ◽  
Shock Process ◽  
New Type ◽  
Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

New type electron gun with electrostatic and electromagnetic lenses

1978 ◽  
Vol 36 (1) ◽  
pp. 62-63
Author(s):  
T. Ichinokawa ◽  
H. Maeda
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Optimum Condition ◽  
Bias Voltage ◽  
Electron Gun ◽  
Charge Effect ◽  
Micro Fabrication ◽  
Maximum Brightness ◽  
New Type ◽  
The Ideal

I. IntroductionThermionic electron gun with the Wehnelt grid is popularly used in the electron microscopy and electron beam micro-fabrication. It is well known that this gun could get the ideal brightness caluculated from the Lengumier and Richardson equations under the optimum condition. However, the design and ajustment to the optimum condition is not so easy. The gun has following properties with respect to the Wehnelt bias; (1) The maximum brightness is got only in the optimum bias. (2) In the larger bias than the optimum, the brightness decreases with increasing the bias voltage on account of the space charge effect. (3) In the smaller bias than the optimum, the brightness decreases with bias voltage on account of spreading of the cross over spot due to the aberrations of the electrostatic immersion lens.In the present experiment, a new type electron gun with the electrostatic and electromagnetic lens is designed, and its properties are examined experimentally.

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

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.

Development of imaging plate for a TEM and its characteristics

1989 ◽  
Vol 47 ◽  
pp. 100-101
Author(s):  
N. Mori ◽  
T. Oikawa ◽  
Y. Harada ◽  
J. Miyahara ◽  
T. Matsuo
Keyword(s):  
Dynamic Range ◽  
Protective Layer ◽  
High Sensitivity ◽  
Imaging Plate ◽  
Phosphor Layer ◽  
Imaging Device ◽  
X Ray Imaging ◽  
New Type ◽  
Basic Characteristics ◽  
Reading System

The Imaging Plate (IP) is a new type imaging device, which was developed for diagnostic x ray imaging. We have reported that usage of the IP for a TEM has many merits; those are high sensitivity, wide dynamic range, and good linearity. However in the previous report the reading system was prototype drum-type-scanner, and IP was also experimentally made, which phosphor layer was 50μm thick with no protective layer. So special care was needed to handle them, and they were used only to make sure the basic characteristics. In this article we report the result of newly developed reading, printing system and high resolution IP for practical use. We mainly discuss the characteristics of the IP here. (Precise performance concerned with the reader and other system are reported in the other article.)Fig.1 shows the schematic cross section of the IP. The IP consists of three parts; protective layer, phosphor layer and support.

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