Non-traditional methods of treating high-silicon ores containing rare elements

1994 ◽  
pp. 219-228 ◽  
Author(s):  
S. V. Chizhevskaya ◽  
A. M. Chekmarev ◽  
O. M. Klimenko ◽  
M. V. Povetkina ◽  
O. A. Sinegribova ◽  
...  
Methodology ◽  
2012 ◽  
Vol 8 (1) ◽  
pp. 23-38 ◽  
Author(s):  
Manuel C. Voelkle ◽  
Patrick E. McKnight

The use of latent curve models (LCMs) has increased almost exponentially during the last decade. Oftentimes, researchers regard LCM as a “new” method to analyze change with little attention paid to the fact that the technique was originally introduced as an “alternative to standard repeated measures ANOVA and first-order auto-regressive methods” (Meredith & Tisak, 1990, p. 107). In the first part of the paper, this close relationship is reviewed, and it is demonstrated how “traditional” methods, such as the repeated measures ANOVA, and MANOVA, can be formulated as LCMs. Given that latent curve modeling is essentially a large-sample technique, compared to “traditional” finite-sample approaches, the second part of the paper addresses the question to what degree the more flexible LCMs can actually replace some of the older tests by means of a Monte-Carlo simulation. In addition, a structural equation modeling alternative to Mauchly’s (1940) test of sphericity is explored. Although “traditional” methods may be expressed as special cases of more general LCMs, we found the equivalence holds only asymptotically. For practical purposes, however, no approach always outperformed the other alternatives in terms of power and type I error, so the best method to be used depends on the situation. We provide detailed recommendations of when to use which method.


1988 ◽  
Vol 49 (C8) ◽  
pp. C8-133-C8-134
Author(s):  
H. Nakamura ◽  
N. Tsuya ◽  
Y. Saito ◽  
Y. Katsumata ◽  
Y. Harada
Keyword(s):  

2020 ◽  
Vol 4 (2) ◽  
pp. 599-604
Author(s):  
Michael A. Onoja ◽  
P. H. Bukar ◽  
C. U. Omeje ◽  
A. M. Adamu

Instrumental neutron activation analysis (INAA) technique was used to investigate the abundance and distribution of rare earth elements (REE) in soil around Kaduna Refinery. The aim of the study is to assess the rare elements potential of Nigeria for economic exploitation. Five REEs (La, Dy, Eu, Yb, and Lu) were detected in varying concentrations ranging from a minimum of 0.6 µg/g (Lu) to a maximum of 249.0 µg/g (La). The elements existed with trends consistent with the natural pattern of REEs in soil, showing significant Eu and Dy anomalies which characterize upper plains and flood plains. The levels of REEs in soil in the study area were generally slightly above background levels, with minimal (La, Dy, and Eu), moderate (Yb), and significant (Lu) enrichments and trending: Lu ˃Yb ˃ Eu ˃ Dy ˃ La. The abundance of the REEs investigated cannot establish a potential of Nigeria for economic exploitation of the mineral, hence, rare earth project in the study area is not viable at the moment.


Author(s):  
Reshma P ◽  
Muneer VK ◽  
Muhammed Ilyas P

Face recognition is a challenging task for the researches. It is very useful for personal verification and recognition and also it is very difficult to implement due to all different situation that a human face can be found. This system makes use of the face recognition approach for the computerized attendance marking of students or employees in the room environment without lectures intervention or the employee. This system is very efficient and requires very less maintenance compared to the traditional methods. Among existing methods PCA is the most efficient technique. In this project Holistic based approach is adapted. The system is implemented using MATLAB and provides high accuracy.


2019 ◽  
Vol 16 (2) ◽  
pp. 4-8
Author(s):  
Bahodir Ayupov ◽  

At the end of the ÕÕ age 50-60 y.y. new direction arose in cinematograph of Franceunder name "New wave", which has played the greater role in development in histories of movie. The Cardinal principles of this direction became the refusal of traditional methods i.e. refusing from enormous creative groups, as well as from high-priced technician,stage managers have begun to shoot the films in compact group


Author(s):  
Abdul Khaleq O. Al-Jubory ◽  
Shaymaa Hussain Salih

In this work, we employ a new normalization Bernstein basis for solving linear Freadholm of fractional integro-differential equations  nonhomogeneous  of the second type (LFFIDEs). We adopt Petrov-Galerkian method (PGM) to approximate solution of the (LFFIDEs) via normalization Bernstein basis that yields linear system. Some examples are given and their results are shown in tables and figures, the Petrov-Galerkian method (PGM) is very effective and convenient and overcome the difficulty of traditional methods. We solve this problem (LFFIDEs) by the assistance of Matlab10.   


Alloy Digest ◽  
1953 ◽  
Vol 2 (10) ◽  

Abstract CORROSIRON is a high silicon corrosion resistant cast iron containing 14.5% Silicon. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as machining and joining. Filing Code: CI-3. Producer or source: Pacific Foundry Company Ltd.


Alloy Digest ◽  
1996 ◽  
Vol 45 (4) ◽  

Abstract Durichlor 51M is a high silicon iron for corrosive services, especially in the handling of hydrochloric acid in all concentrations. It is also very resistant to most chlorine gas and many destructive chloride-containing solutions. The alloy is treated at melting by argon ladle degassing. This datasheet provides information on composition, physical properties, hardness, tensile properties, and compressive strength. It also includes information on corrosion resistance as well as machining and joining. Filing Code: FE-109. Producer or source: The Duriron Company Inc.


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