scholarly journals An Electronic "Angle Marker" for the Siemens Texture Diffractometer

1981 ◽  
Vol 4 (3) ◽  
pp. 183-188
Author(s):  
J. S. Kallend
Keyword(s):  
Electronic Circuit ◽  
Data Logging ◽  
Automatic Data ◽  
Line Frequency ◽  
X Ray ◽  
Accurate Indication ◽  
Electrical Supply

An electronic circuit is described which produces output pulses in response to preselected increments in specimen rotation on a Siemens Texture Diffractometer. The output pulses give an accurate indication of the specimen position, and may be used to trigger X-ray scaler read-out and reset operations for automatic data logging. The accuracy with which specimen position is determined is unaffected by variations in line frequency of the goniometer motor electrical supply, or by goniometer motor inertia when it is first switched on.

scholarly journals Design, simulation and practical experimentation of miniaturized turbine flow sensor for flow meter assessment

2019 ◽  
Vol 8 (3) ◽  
pp. 777-788
Author(s):  
Salami Ifedapo Abdullahi ◽  
Mohamed Hadi Habaebi ◽  
Noreha Abd Malik
Keyword(s):  
Flow Simulation ◽  
Input Voltage ◽  
Flow Sensor ◽  
Data Logging ◽  
Sensors And Actuators ◽  
Flow Meter ◽  
Daily Lives ◽  
Automatic Data ◽  
3D Cad ◽  
Turbine Flow Meter

Flow sensors are very essential in many aspects of our daily lives. Many of the industrial processes need a very consistent flow sensor to monitor and check for irregularities in their system. Therefore, flow sensor is an important tool for advanced operation in industrial environment. In this paper, the design and development of a 3D fabricated flow sensor was carried out using SolidWork 3D CAD. SolidWork Flow Simulation was used to model the effect the turbine flow sensor would have on a constant flowing water while MATLAB Simulink flow graph was created to visualize the effect of turbine flow sensor response with voltage input. Afterwards, the design was 3D printed using UP Plus 2 3D printer. The experimentation involved selection of sensors, coding to control the turbine flow sensor and automatic data logging and storage. During the design phase, the sensors and actuators were assembled using locally sourced material. Subsequently, under controlled laboratory environment, the turbine flow sensor was tested using a DC motor which was programmed to control the revolution per minute(rpm) of the turbine flow sensor. The rpm and velocity of the turbine flow meter was measured and stored in a database via Microsoft Excel using Cool Term Software. A total number of 517 readings were analysed to evaluate the performance of the turbine flow sensor. The result shows that the turbine flow meter is responsive to the motor input voltage and yielded accurate measurement of rpm and velocity of turbine flow meter.

Studies of Distortion in Potassium Manganese Fluoride, KMnF3, at 10°K: an Example of Powder Profile Analysis Using the Pearson Type VII Distribution

1990 ◽  
Vol 5 (1) ◽  
pp. 41-43 ◽  
Author(s):  
A. Ratuszna ◽  
K. Majewska
Keyword(s):  
Profile Analysis ◽  
Electronic System ◽  
Maximum Intensity ◽  
Automatic Data ◽  
X Ray ◽  
Distorted Structure ◽  
Pearson Type Vii Distribution ◽  
Pearson Type ◽  
Perovskite Type ◽  
Perovskite Type Structure

AbstractPearson VII functions, some of the most useful descriptions of the intensity distribution within the X-ray powder reflection, have been used to study distortion in the perovskite-type structure of KMnF3. Separate full-widths, Δ, at half-maximum intensity, and Pearson exponents, m, were taken for the low- and high-angle sides of the profiles. The background was assumed to be linear. For the distorted structure, summation was made over all overlapping lines that might possibly contribute to the observed profile. Measurements were performed using a powder diffractometer with a specially adapted electronic system consisting of an automatic data recorder and a method, developed at this laboratory, for transferring data to an IBM PC/AT computer. By these means it could be shown that at 10° K the crystal structure of KMnF3distorts from cubic to monoclinic.

X-ray and neutron structure of 1,8-(3,6,9-trioxaundecane-1,11-diyldioxy)-9,10-dihydro-10,10-dimethylanthracene-9-ol (P326); some pitfalls of automatic data collection

2001 ◽  
Vol 57 (3) ◽  
pp. 339-345 ◽  
Author(s):  
Rex A. Palmer ◽  
Brian S. Potter ◽  
John N. Lisgarten ◽  
Ruth H. Fenn ◽  
Sax A. Mason ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Parent Compound ◽  
Ring Structure ◽  
Automatic Data ◽  
X Ray ◽  
Planar Structures ◽  
Unit Cells ◽  
Automatic Data Collection ◽  
O 18

The structure of the crown ether 1,8-(3,6,9-trioxaundecane-1,11-diyldioxy)-9,10-dihydro-10,10-dimethylanthracene-9-ol, C24H30O6·H2O (1), code name P326, the parent compound for a series of derivatives, has been determined by both X-ray diffraction at room temperature and neutron diffraction at very low temperature. The unit cells are very similar at both temperatures and in both cases the crystals exhibit P21 symmetry with Z = 4 (two molecules, A and B, respectively, per asymmetric unit) and pseudosymmetry P21/c. The higher symmetry is broken mainly by the two independent water molecules in the unit cell, some reflections which would be absent in P21/c having strong intensities in both the X-ray and neutron data. In both molecules A and B hydrogen bonds involving the water molecule stabilize the macrocyclic ring structure, one involving the macrocyclic O(9) as a donor. Close contacts between the water and macrocyclic O atoms in each molecule also suggest the presence of two bifurcated hydrogen bonds, involving water HW2 to both O(16) and O(18), and water HW1 to both O(18) and O(20), respectively, with considerable variation in the geometry being present. Both molecules A and B exhibit very close pseudosymmetry across a plane perpendicular to the molecular plane and through atoms C(9) and O(18), and in addition are predominantly planar structures. The X-ray analysis failed to reveal one H atom per water molecule, each being subsequently included after location and refinement in the neutron analysis.

scholarly journals Technology in the advancement of glaciology

1987 ◽  
Vol 33 (S1) ◽  
pp. 66-77 ◽  
Author(s):  
H. Jay Zwally
Keyword(s):  
Large Scale ◽  
New Technology ◽  
Ice Cores ◽  
Data Logging ◽  
Mass Spectrometers ◽  
Automatic Data ◽  
Fundamental Properties ◽  
Large Memory ◽  
Satellite Sensors ◽  
Evolution Of Science

AbstractMany of the major advances in glaciology during the past 50 years have followed the development and application of new technology for viewing and measuring various characteristics of ice. Microscopes to study ice crystals, radars to probe the internal structure of large ice masses, mass spectrometers to analyze the atomic composition of ice cores, and satellite sensors to measure the global distribution of ice are some of the tools readily adapted by glaciologists. Today, new tools include microcomputers for automatic data logging, large-memory computers for data processing and numerical modeling, sensitive instruments for ice analysis, and satellite sensors for large-scale ice observations. In the future, continued advances in key technologies will help guide the evolution of science questions considered by glaciologists, expanding our view of ice, its fundamental properties, its interactions within the ice–ocean–land–atmosphere system, and its role in the evolution of our global environment.

scholarly journals Automatic Data Logging and Quality Analysis System for Mobile Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-25 ◽  
Author(s):  
Yong-Yi Fanjiang ◽  
Chih-Pin Wu
Keyword(s):  
Field Trial ◽  
Traditional Approach ◽  
Quality Analysis ◽  
Data Logging ◽  
Test Environment ◽  
Automatic Data ◽  
Mean Time Between Failures ◽  
Log Files ◽  
Time Between Failures ◽  
Analysis System

The testing phase of mobile device products includes two important test projects that must be completed before shipment: the field trial and the beta user trial. During the field trial, the product is certified based on its integration and stability with the local operator’s system, and, during the beta user trial, the product is certified by multiple users regarding its daily use, where the goal is to detect and solve early problems. In the traditional approach used to issue returns, testers must log into a web site, fill out a problem form, and then go through a browser or FTP to upload logs; however, this is inconvenient, and problems are reported slowly. Therefore, we propose an “automatic logging analysis system” (ALAS) to construct a convenient test environment and, using a record analysis (log parser) program, automate the parsing of log files and have questions automatically sent to the database by the system. Finally, the mean time between failures (MTBF) is used to establish measurement indicators for the beta user trial.

Automated X-Ray Diffraction Laboratory System

1971 ◽  
Vol 15 ◽  
pp. 114-122 ◽  
Author(s):  
Annin Segmüller
Keyword(s):  
Computer System ◽  
Pole Figure ◽  
Laboratory System ◽  
Time Sharing ◽  
Data Logging ◽  
X Ray Diffraction ◽  
Complete Control ◽  
X Ray ◽  
Time Sharing System ◽  
Structure Research

An IBM 1800 time-sharing system is used in our X-ray laboratory to control a four-circle diffractometer for structure research, several powder diffractometers, a pole-figure goniometer and a microdensitometer along with other instruments outside the diffraction area. A survey of the computer system is given and the hardware necessary to automate the diffractometers is discussed. The computer supervision ranges from simple data-logging with a minimum of control to complete control of all actions depending on the diffractometer and the requirements of the experiment. Also described is the use of the computer to process the data and to perform background jobs.

An Application of X-Ray Fluorescent Spectrography to Columbium Alloy Melting Practices*

1960 ◽  
Vol 4 ◽  
pp. 495-512
Author(s):  
D. Moroz ◽  
D. E. Fornwalt ◽  
S. Aconsky ◽  
J. Doyle ◽  
W. R. Clough
Keyword(s):  
Quality Control ◽  
Sample Preparation ◽  
Consumable Electrode ◽  
Data Handling ◽  
Automatic Data ◽  
X Ray ◽  
Elemental Compositions ◽  
Physical Form

AbstractTechniques were developed and statistically evaluated for the determination of both the homogeneity and the elemental compositions of columbium alloy ingots. X-ray fluorescent spectrography and automatic data handling systems are utilized. Sample preparation is discussed in detail from the consumable-electrode arc-melt process to the final physical form suitable for X-ray fluorescent spectrography. Arrangements of apparatus for obtaining, recording, processing, and interpreting data, with specific attention to limitations for various matrices, are treated at length.The method has been applied to specific cases with, for example, a correlation of the degree of variation of homogeneity of columbium alloy ingots with remelting practice. An attempt is made to provide a preliminary basis for determining the value of the technique as a possible means of quality control.

Automatic Data Acquisition and Reduction for Elemental Analysis of Aerosol Samples

1973 ◽  
Vol 17 ◽  
pp. 560-570 ◽  
Author(s):  
J. F. Harrison ◽  
R. A. Eldred
Keyword(s):  
Energy Spectrum ◽  
Data Collection ◽  
Data Acquisition ◽  
Elemental Composition ◽  
Elemental Analysis ◽  
Correlation Technique ◽  
Control Data ◽  
Automatic Data ◽  
X Ray ◽  
Automatic Data Acquisition

AbstractA PDF 15/40 computer wich ADC and CAMAC interfaces is used to control data collection apparatus, acquire data, and reduce data to determine the elemental composition of aerosol samples. The background is subtracted from each energy spectrum, peak centers are located automatically using a Gaussian correlation technique, peak multiplets are resolved with Gaussian fits, peak energies are compared with entries in a table of x-ray lines for possible identification, multiple identification of peaks and line interferences are resolved, and the elemental amounts are determined from the areas of the Gaussian fits.

scholarly journals Robust indexing for automatic data collection

2004 ◽  
Vol 37 (3) ◽  
pp. 399-409 ◽  
Author(s):  
Nicholas K. Sauter ◽  
Ralf W. Grosse-Kunstleve ◽  
Paul D. Adams
Keyword(s):  
Data Collection ◽  
High Throughput ◽  
Visual Inspection ◽  
The Novel ◽  
Automatic Data ◽  
X Ray ◽  
Alternative Approach ◽  
Automatic Data Collection ◽  
Diffraction Patterns ◽  
Improved Methods

Improved methods for indexing diffraction patterns from macromolecular crystals are presented. The novel procedures include a more robust way to verify the position of the incident X-ray beam on the detector, an algorithm to verify that the deduced lattice basis is consistent with the observations, and an alternative approach to identify the metric symmetry of the lattice. These methods help to correct failures commonly experienced during indexing, and increase the overall success rate of the process. Rapid indexing, without the need for visual inspection, will play an important role as beamlines at synchrotron sources prepare for high-throughput automation.

Contribution of Electromagnetic Perturbation to the Transient Response of an Electronic Circuit Exposed to a High Multi-MeV X-Ray Flux

2015 ◽  
Vol 62 (3) ◽  
pp. 1383-1394 ◽  
Author(s):  
M. Ribiere ◽  
S. Demarquay ◽  
M. Maulois ◽  
R. Maisonny ◽  
T. DaAlmeida ◽  
...  
Keyword(s):  
Transient Response ◽  
Electronic Circuit ◽  
X Ray ◽  
Electromagnetic Perturbation
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