Some Novel Studies of Thermodynamics, Kinetics and Transport Phenomena in Slags

2012 ◽  
Vol 31 (4-5) ◽  
pp. 351-358
Author(s):  
Luckman Muhmood ◽  
Anna Semykina ◽  
Masanori Iwase ◽  
Seshadri Seetharaman
Keyword(s):  
Iron Oxide ◽  
Research Work ◽  
Royal Institute ◽  
Science Division ◽  
Novel Studies ◽  
Novel Technique ◽  
Transport Studies ◽  
Slag Oxidation ◽  
Institute Of Technology ◽  
Oxidation In Air

AbstractThe following paper revolves around the research work conducted in collaboration during Professor Iwase's brief visits to the Materials Process Science Division at Royal Institute of Technology, Stockholm. The paper focuses on the thermodynamic aspects of CaO–FeO–SiO2 and CaO–FeO–SiO2–MnO slag oxidation in air and sulfur transport through CaO–Al2O3–SiO2 slag. Thermodynamics of slag oxidation in air opens potential new areas in terms of focus on effective recovery of iron oxide from slag. The slag transport studies are of fundamental nature and focuses on a novel technique to calculate the diffusion of species through slag by analyzing its corresponding concentration in the metal phase.

Experimental Investigation of the Influence of Flow Obstacles on Post-Dryout Heat Transfer in an Annulus

2009 ◽  
Author(s):  
I. G. Anghel ◽  
H. Anglart ◽  
S. Hedberg ◽  
S. Rydstro¨m
Keyword(s):  
Heat Transfer ◽  
Current Approach ◽  
Experimental Setup ◽  
Royal Institute ◽  
Considerable Influence ◽  
Transfer Enhancement ◽  
Transient Conditions ◽  
Accuracy Of Measurements ◽  
Present Design ◽  
Institute Of Technology

This paper describes the experimental setup, instrumentation and procedures which have been developed in the thermal-hydraulic laboratory at the Royal Institute of Technology (KTH), Stockholm, Sweden, to perform new post-dryout heat transfer investigations in an annulus with flow obstacles. Previous investigations performed in the same laboratory indicated that flow obstacles had a considerable influence on the post-CHF heat transfer. The measured heat transfer enhancement was significantly under-predicted by existing models. However, the net effect of obstacles could not be deduced from the measurements, since reference - obstacle-free measurements - had not been performed. In addition, the number of thermocouples that could be installed inside the heated rod was limited to 8. These deficiencies have been removed in the current approach. Firstly, the present design of the test section allows for measurements both with and without flow obstacles. In this way the net effect of the obstacles will be captured. Secondly, a newly developed technique allowed the installation of 40 thermocouples inside of the heated rod. An additional 40 thermocouples have been installed on the external wall of the heated tube. Therefore, a significant improvement of the accuracy of measurements can be expected. The present arrangement of instrumentation is suitable to perform measurements of heat transfer under both steady-state and transient conditions.

scholarly journals Solution of Parabolic Partial Differential Equations by Non-Polynomial Cubic Spline Technique

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Bilal Ahmad ◽  
Anjum Perviz ◽  
Muhammad Ozair Ahmad ◽  
Fazal Dayan
Keyword(s):  
Research Work ◽  
Numerical Test ◽  
Parabolic Partial Differential Equation ◽  
Parabolic Partial Differential Equations ◽  
The Novel ◽  
Parabolic Pdes ◽  
Partial Differential ◽  
Novel Technique ◽  
Engineering And Technology ◽  
Scientific Engineering

Parabolic partial differential equation having a great impact on our scientific, engineering and technology. Enormous research have been conducted for the solution of parabolic PDEs. . In this research work, we introduced a novel technique for the numerical solution of fourth order PDEs.  The novel technique is based upon the polynomial cubic cutting method (PCSM) was used with Adomian breakdown technique (ADM).The constraint for the alternative variables was decomposed by Edomian decomposition for the successive approximation. A numerical test problem of parabolic PDEs solved by purposed technique

Experimental investigation on BOF slag oxidation in air

2018 ◽  
Vol 46 (8) ◽  
pp. 747-754 ◽  
Author(s):  
L. Jiang ◽  
Y. Bao ◽  
X. Hu ◽  
Y. Chen ◽  
G. Liu ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Slag Oxidation ◽  
Bof Slag ◽  
Oxidation In Air

Deterrence of Piracy Employing IR Transmitter and Steganography System

2021 ◽  
Vol 1 (2) ◽  
pp. 32-40
Author(s):  
A.M. Prasanna Kumar ◽  
Bharathi Gururaj
Keyword(s):  
Mobile Phone ◽  
Film Industry ◽  
Video Recording ◽  
Research Work ◽  
Infrared Light ◽  
Novel Technique ◽  
Video Recordings ◽  
Light Rays ◽  
Film Piracy ◽  
Mobile Phone Camera

Moving picture entertainment is a foremost source of amusement for populace in today’s existence. To entertain populace a lot of investment is put into film production by the film makers. Their endeavour is being ruined by few people by pirate the movies substance. They do it by capture the video recording in mobile phone camera and upload it to websites or put up for sale it to people which cause huge loss. In this research work we are proposea novel technique for reduction of film piracy by avoiding fake video recordings of video in theatres. An indistinguishable luminosity is projected from the display to the whole spectators that falls on the camera lens which is sensitive to infrared light rays Makes the recorded video unfit to watch. A method is developed for anti-piracy system for film industry using steganography technique in MATLAB.

scholarly journals Mutual Capacity Building through North-South Collaboration Using Challenge-Driven Education

2019 ◽  
Vol 11 (24) ◽  
pp. 7236 ◽  
Author(s):  
Anna-Karin Högfeldt ◽  
Anders Rosén ◽  
Christine Mwase ◽  
Ann Lantz ◽  
Lena Gumaelius ◽  
...  
Keyword(s):  
Engineering Education ◽  
Social Values ◽  
Organizational Structures ◽  
Royal Institute ◽  
International Policy ◽  
Education Change ◽  
Global Challenges ◽  
New Knowledge ◽  
Institute Of Technology ◽  
The University

The urgent need for actions in the light of the global challenges motivates international policy to define roadmaps for education on all levels to step forward and contribute with new knowledge and competencies. Challenge-Driven Education (CDE) is described as an education for Sustainable Development (ESD) approach, which aims to prepare students to work with global challenges and to bring value to society by direct impact. This paper describes, evaluates and discusses a three-year participatory implementation project of Challenge-driven education (CDE) within the engineering education at the University of Dar es Salam, UDSM, which has been carried out in collaboration with the Royal Institute of Technology, KTH in Stockholm. Conclusions are drawn on crucial aspects for engineering education change through the lens of Activity Theory (AT), where CDE is brought forward as a motivating ESD initiative for engineering faculty and students. Furthermore participatory co-creation is notably useful as it aims to embrace social values among the participants. Also, traditional organizational structures will need to be continuously negotiated in the light of the integration of more open-ended approaches in education.

Communication of Speech Sounds by a Tactual Vocoder

1963 ◽  
Vol 6 (3) ◽  
pp. 207-222 ◽  
Author(s):  
J. M. Pickett ◽  
B. Horenstein Pickett
Keyword(s):  
Speech Perception ◽  
Energy Distribution ◽  
Frequency Analysis ◽  
Speech Signal ◽  
Frequency Region ◽  
Speech Communication ◽  
Royal Institute ◽  
Speech Transmission ◽  
Institute Of Technology ◽  
Speech Information

Tests of tactual speech perception were conducted using a special frequency-analyzing vocoder. The vocoder presented a running frequency analysis of speech mapped into a spatial array of tactual vibrations which were applied to the fingers of the receiving subject. Ten vibrators were used, one for each finger. The position of a vibrator represented a given frequency region of speech energy; the total range covered was 210 to 7 700 cps; all the vibrations had a frequency of 300 cps; the vibration amplitudes represented the energy distribution over the various frequencies. Discrimination and identification tests were performed with various sets of test vowels; consonant discrimination tests were performed with certain consonants including those that might be difficult to lipread. Performance with vowels appeared to be related to formant structure and duration as measured on the test vowels, and to tactual masking effects. Consonant discrimination was good between stops and continuants; consonant features of nasality, voicing, and affrication were also discriminated to some extent. It is concluded that the skin offers certain capacities for transmitting speech information which may be used to complement speech communication where only an impoverished speech signal is normally received. This research was conducted at the Speech Transmission Laboratory, Royal Institute of Technology, Stockholm, Sweden.

The DIVE Laboratory

1995 ◽  
Vol 4 (4) ◽  
pp. 431-440
Author(s):  
Christer Carlsson ◽  
Kai-Mikael Jää-Aro
Keyword(s):  
Virtual Environments ◽  
Spatial Model ◽  
Collaborative Work ◽  
Human Interaction ◽  
Royal Institute ◽  
Research Projects ◽  
Virtual Reality System ◽  
Virtual Spaces ◽  
Mutual Awareness ◽  
Institute Of Technology

The Swedish multiinstitutional research program MultiG spawned a number of research projects concerned with telecommunication, telecollaboration, and telepresence. One of these projects is DIVE (Distributed Interactive Virtual Environments), a multiuser virtual reality system developed jointly by the Swedish Institute of Computer Science and the Royal Institute of Technology in Stockholm, Sweden. DIVE is used as the platform for research in collaborative work in virtual spaces. In cooperation with the universities of Lancaster, Manchester, and Nottingham, the DIVE group has developed a spatial model for interaction. In this model each participant defines subspaces for their presence and attention. The intersection of those subspaces provides for varying degrees of mutual awareness, which is presumed to support more natural human-human interaction in virtual environments.

Fabrication and Processing of Gamma Titanium Aluminides - A Review

2010 ◽  
Vol 638-642 ◽  
pp. 1281-1287 ◽  
Author(s):  
Yu Yong Chen ◽  
Yan Fei Chen ◽  
Fan Tao Kong ◽  
Shu Long Xiao
Keyword(s):  
Rapid Solidification ◽  
Investment Casting ◽  
Mechanical Milling ◽  
Titanium Aluminides ◽  
Research Work ◽  
Nanocrystalline Powders ◽  
Processing Route ◽  
Sheet Rolling ◽  
Tial Alloys ◽  
Institute Of Technology

The paper outlines some research work that has been conducted in Harbin Institute of Technology, on the fabrication of TiAl alloys. The review is presented with special emphasis on some different manufacturing routes of TiAl alloys, including investment casting, canned forging and sheet rolling, mechanical milling and rapid solidification. Investment casting has been developed to manufacture near-net shape TiAl blades. Also included are current development of canned forging and rolling for TiAl sheets. Then, TiAl nanocrystalline powders gained through low temperature and two steps mechanical milling were researched. And considerably refined TiAl alloys with Y additions were produced by rapid solidification and the microstructure evolution with Y addition was studied. Details of the processing route and microstructure related to different processing method will be presented.

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