scholarly journals Mineral Processing and Metallurgical Treatment of Lead Vanadate Ores

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 197 ◽  
Author(s):  
Ivan Silin ◽  
Klaus Hahn ◽  
Devrim Gürsel ◽  
Dario Kremer ◽  
Lars Gronen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Vanadium Oxide ◽  
Chemical Properties ◽  
Mineral Processing ◽  
Primary Sources ◽  
The Past ◽  
Research Activities ◽  
Metallurgical Processing ◽  
Hydrometallurgical Treatment ◽  
Lead Vanadate

Vanadium has been strongly moving into focus in the last decade. Due to its chemical properties, vanadium is vital for applications in the upcoming renewable energy revolution as well as usage in special alloys. The uprising demand forces the industry to consider the exploration of less attractive sources besides vanadiferous titanomagnetite deposits, such as lead vanadate deposits. Mineral processing and metallurgical treatment of lead vanadate deposits stopped in the 1980s, although the deposits contain a noteworthy amount of the desired resource vanadium. There has been a wide variety of research activities in the first half of the last century, including density sorting and flotation to recover concentrates as well as pyro- and hydrometallurgical treatment to produce vanadium oxide. There have been ecological issues and technical restrictions in the past that made these deposits uninteresting. Meanwhile, regarding the development of mineral processing and metallurgy, there are methods and strategies to reconsider lead vanadates as a highly-potential vanadium resource. This review does not merely provide an overview of lead vanadate sources and the challenges in previous mechanical and metallurgical processing activities, but shows opportunities to ensure vanadium production out of primary sources in the future.

The Historiography of Missionary Linguistics

2012 ◽  
Vol 39 (2-3) ◽  
pp. 185-242 ◽  
Author(s):  
Otto Zwartjes
Keyword(s):  
21St Century ◽  
State Of The Art ◽  
Primary Sources ◽  
Past Century ◽  
Reference List ◽  
Research Topics ◽  
Secondary Sources ◽  
The Past ◽  
Research Activities ◽  
The Subject

Summary There is no need to repeat earlier complaints that the historiography of missionary linguistics was being neglected, since the situation has changed considerably sine the last decades of the past century. The first decade of the 21st century in particular has witnessed a veritable explosion of research activities. This article surveys the state of the art in the field of recent work in the historiographical subfield called ‘Missionary linguistics’, covering the period 2002–2012. It represents an update of Zimmermann (2004) and provides separate sections devoted to earlier studies of missionary linguistics, international conferences, published volumes, journals, reprints and editions of primary sources, exhibitions and other activities related to the subject. The reference list is divided in two sections, (1) primary sources, with some 140 entries, and (2) secondary sources, including more than 300 titles. It is hoped that this account will suggest several additional research topics and inspire scholars to make further advances in this fascinating field of research.

LEGAL RESEARCH AT AHMAD IBRAHIM KULLIYYAH OF LAWS, INTERNATIONAL ISLAMIC UNIVERSITY MALAYSIA: TRENDS AND POLICIES

2012 ◽  
Vol 18 (1) ◽  
Author(s):  
Hunud Abia Kadouf ◽  
Umar Aimhanosi Oseini ◽  
Ainul Jaria Maidin
Keyword(s):  
Research Output ◽  
Academic Staff ◽  
Research Quality ◽  
Research Progress ◽  
Institutions Of Higher Education ◽  
Legal Research ◽  
The Past ◽  
Research Institution ◽  
Research Activities ◽  
The Status

The primary function of Ahmad Ibrahim Kulliyyah (Faculty) of Laws, at the very beginning of its inception, was that of teaching civil law and Sharî’ah subjects. As it matured, its vision has been varied from teaching to that of research with the aim of attaining the status of a full research institution that provides both quality research and best legal education in the region. Similar to other institutions of higher education in Malaysia, the responsibility of research is a shared function of both graduate students and the academic staff. The research output, on the part of the students is mostly composed of either Master Dissertations or PhD Theses. The academic members of the Faculty, however, are involved either in direct research, individually or jointly, supervision, and publications of their findings. By investigating and analyzing factors influencing research activities at AIKOL in the past twenty years, the researchers will be able to identify the general trends and development of research as it unfolded over years. The researchers hope that the policymakers, at both Faculty and University levels, will use the findings to improve research quality by boldly addressing the problems hampering research progress at AIKOL.

Chemistry of Variable Charge Soils

1997 ◽  
Keyword(s):  
Soil Pollution ◽  
Management Practices ◽  
Chemical Properties ◽  
Soil Management ◽  
Soil Productivity ◽  
Basic Difference ◽  
The Past ◽  
Variable Charge ◽  
Constant Charge ◽  
Variable Charge Soils

This book, based on research carried out at the Academia Sinica over the past 30 years, explains the basic difference between the variable charge soils of tropical and subtropical regions, and the constant charge soils of temperate regions. It will focus on the chemical properties of the variable charge soils--properties which have important bearing on soil management practices, including maximizing soil productivity and combating soil pollution.

Geotechnical Applications of Sewage Sludge Stabilized with Biomass Ash and its Effect on Soil Nutriential Properties: A Critical Review

2021 ◽  
Vol 9 (VI) ◽  
pp. 1046-1051
Author(s):  
Ishowriya Yumnam
Keyword(s):  
Sewage Sludge ◽  
Positive Impact ◽  
Chemical Properties ◽  
Past Research ◽  
Biological Properties ◽  
Engineering Properties ◽  
Biomass Ash ◽  
The Past ◽  
Waste Sewage Sludge ◽  
Properties Of Soil

In this review article the usage of waste sewage sludge and the biomass ash for improving the engineering and non-engineering properties’ of both concrete and soil are discussed in detail. Numerous past research works were studied in detail so as to predict the behavior of biomass ash and waste sewage sludge when used for the stabilization process of soil and concrete. Past studies related to the usage of stabilized sewage sludge and biomass ash were studied in a detailed manner and depending upon the past studies several conclusions has been drawn which are discussed further. Several studies related to the usage of the waste sewage sludge for improving soil physical, chemical and biological properties showed that the usage of waste sewage sludge improve the physical properties, chemical properties, macro-nutriential properties and micro-nutriential properties up to a great extent. Depending upon the results of the past studies it can be concluded that the usage of sewage sludge has positive impact over all the properties of soil and this waste should be utilized in improving the properties of soil rather than dumping. Numerous studies related to the usage of the biomass ash showed that biomass ash has positive impact over both soil as well as concrete. Studies related to the usage of the biomass ash in soil showed that there was a positive response of the stabilized soil after its stabilization with the biomass ash. Studies related to the usage of the biomass ash in concrete showed that the biomass ash can be used up to 10 percent replacement of the ordinary Portland cement so as to attain maximum strength results from it.

Using Sources In History Teaching

2021 ◽  
pp. 54-67
Author(s):  
Seema S.Ojha
Keyword(s):  
Deductive Reasoning ◽  
Primary Source ◽  
Primary Sources ◽  
Historical Knowledge ◽  
History Teaching ◽  
Secondary Sources ◽  
The Past ◽  
Teaching History ◽  
The World ◽  
Source Materials

History is constructed by people who study the past. It is created through working on both primary and secondary sources that historians use to learn about people, events, and everyday life in the past. Just like detectives, historians look at clues, sift through evidence, and make their own interpretations. Historical knowledge is, therefore, the outcome of a process of enquiry. During last century, the teaching of history has changed considerably. The use of sources, viz. textual, visual, and oral, in school classrooms in many parts of the world has already become an essential part of teaching history. However, in India, it is only a recent phenomenon. Introducing students to primary sources and making them a regular part of classroom lessons help students develop critical thinking and deductive reasoning skills. These will be useful throughout their lives. This paper highlights the benefits of using primary source materials in a history classroom and provides the teacher, with practical suggestions and examples of how to do this.

scholarly journals Towards National Archaeological Mapping. Assessing Source Data and Methodology—A Case Study from Scotland

Geosciences ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 272 ◽  
Author(s):  
Łukasz Banaszek ◽  
Dave Cowley ◽  
Mike Middleton
Keyword(s):  
Laser Scanning ◽  
General Purpose ◽  
Primary Sources ◽  
Specific Reference ◽  
Large Area ◽  
The Past ◽  
Airborne Laser ◽  
Source Data ◽  
Collection Strategies

While the National Record of the Historic Environment (NRHE) in Scotland contains valuable information on more than 170,000 archaeological monuments, it is clear that this dataset is conditioned by the disposition of past survey and changing parameters of data collection strategies over many decades. This highlights the importance of creating systematic datasets, in which the standards to which they were created are explicit, and against which the reliability of our knowledge of the material remains of the past can be assessed. This paper describes issues of data structure and reliability, then discussing the methodologies under development for expediting the progress of national-scale mapping with specific reference to the Isle of Arran. Preliminary outcomes of a recent archaeological mapping project of the island, which has been used to develop protocols for rapid large area mapping, are outlined. The primary sources for the survey were airborne laser scanning derivatives and orthophotographs, supplemented by field observation, and the project has more than doubled the number of known monuments of Arran. The survey procedures are described, followed by a discussion of the utility of ‘general purpose’ remote sensed datasets, focusing on the assessment of strengths and weaknesses for rapid mapping of large areas.

scholarly journals Wind Energy Potential at Badin and Pasni Costal Line of Pakistan

2017 ◽  
Vol 6 (2) ◽  
pp. 103 ◽  
Author(s):  
Ghulam Sarwar Kaloi ◽  
Jie Wang ◽  
Mazhar H Baloch ◽  
Sohaib Tahir
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Urban Areas ◽  
Interconnection Network ◽  
Wind Farms ◽  
Energy Sector ◽  
Energy Crisis ◽  
Energy Potential ◽  
The Past ◽  
Wind Energy Potential

Unfortunately, Pakistan is facing an acute energy crisis since the past decade due to the increasing population growth and is heavily dependent on imports of fossil fuels. The shortage of the electricity is 14-18 hours in rural areas and 8-10 hours in urban areas. This situation has been significantly affecting the residential, industrial and commercial sectors in the country. At this time, it is immense challenges for the government to keep the power supply provision continue in the future for the country. In this situation, it has been the increased research to explore renewable energy resources in the country to fulfill the deficit scenario in the state. The renewable energy sector has not penetrated in the energy mix, currently in the upcoming markets. This paper highlights the steps taken by the country in the past and is taking steps at the present time to get rid of from the existing energy crisis when most urban areas are suffering from power outages for 12 hours on regular basis. Until 2009, no single grid interconnected wind established, but now the circumstances are changing significantly and wind farms are contributing to the national grid is the reality now. The initiation of the three wind farms interconnection network and many others in the pipeline are going to be operational soon. The federal policy on wind energy system has recently changed. Surprisingly, the continuing schemes of the wind farm are getting slow. This paper reviews developments in the wind energy sector in the country and lists some suggestions that can contribute to improving the penetration of wind energy in the national energy sector.Keywords: Wind energy, evolution of wind resource, Wind sites of PakistanArticle History: Received Dec 16th 2016; Received in revised form May 15th 2017; Accepted June 18th 2017; Available onlineHow to Cite This Article: Kaloi,G.S., Wang, J., Baloch, M.H and Tahir, S. (2017) Wind Energy Potential at Badin and Pasni Costal Line Pakistan. Int. Journal of Renewable Energy Development, 6(2), 103-110.https://doi.org/10.14710/ijred.6.2.103-110

Can history improve big bang health reform? Commentary

2018 ◽  
Vol 13 (3-4) ◽  
pp. 251-262 ◽  
Author(s):  
Gregory P. Marchildon
Keyword(s):  
Universal Health Coverage ◽  
Policy Development ◽  
Big Bang ◽  
Decision Makers ◽  
Primary Sources ◽  
Health Coverage ◽  
Policy Problem ◽  
The Past ◽  
Major Reform ◽  
Universal Health

AbstractAt present, the professional skills of the historian are rarely relied upon when health policies are being formulated. There are numerous reasons for this, one of which is the natural desire of decision-makers to break with the past when enacting big bang policy change. This article identifies the strengths professional historians bring to bear on policy development using the establishment and subsequent reform of universal health coverage as an example. Historians provide pertinent and historically informed context; isolate the forces that have historically allowed for major reform; and separate the truly novel reforms from those attempted or implemented in the past. In addition, the historian’s use of primary sources allows potentially new and highly salient facts to guide the framing of the policy problem and its solution. This paper argues that historians are critical for constructing a viable narrative of the establishment and evolution of universal health coverage policies. The lack of this narrative makes it difficult to achieve an accurate assessment of systemic gaps in coverage and access, and the design or redesign of universal health coverage that can successfully close these gaps.

Guangdong, a Potential Province for Developing Hot Dry Rock Geothermal Resource

2014 ◽  
Vol 492 ◽  
pp. 583-585 ◽  
Author(s):  
An Dong Wang ◽  
Zhan Xue Sun ◽  
Bao Qun Hu ◽  
Jin Hui Liu ◽  
Cheng Dong Liu
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Preliminary Data ◽  
Geothermal Energy ◽  
Guangdong Province ◽  
Geothermal Resource ◽  
Hot Dry Rock ◽  
The Past ◽  
Electricity Power ◽  
Near Future

In the past decades, the study on Hot Dry Rock (HDR) geothermal resource has been a hot topic. A large number of investigations confirm that electricity power generated from HDR is feasible and suggest that HDR geothermal source is a kind of local and renewable energy. Up no now, many countries have carried out HDR experiments. As a large energy consumption country, China will also develop HDR geothermal energy in the near future. In the present study, our preliminary data potentially suggest that Guangdong province have great potential to develop HDR geothermal applications.

Size and shape-controlled synthesis of Ru nanocrystals

2018 ◽  
Vol 3 (12) ◽  
Author(s):  
Linlin Xu ◽  
Jun Yang
Keyword(s):  
Noble Metal ◽  
Chemical Properties ◽  
Controlled Synthesis ◽  
One Dimensional ◽  
Size And Shape ◽  
The Past ◽  
Metal Nanomaterials ◽  
Shape Controlled ◽  
Synthetic Approaches ◽  
Coherent Picture

Abstract Mastery over the size/shape of nanocrystals (NCs) enables control of their properties and enhancement of their usefulness for a given application. Within the past decades, the development of wet-chemistry methods leads to the blossom of research in noble metal nanomaterials with tunable sizes and shapes. We herein would prefer to devote this chapter to introduce the solution-based methods for size and shape-controlled synthesis of ruthenium (Ru) NCs, which can be summarized into five categories: (i) Synthesis of spherical Ru NCs; (ii) synthesis of one-dimensional (1D) Ru NCs, e.g. wires and rods; (iii) synthesis of two-dimensional (2D) Ru NCs, e.g. nanoplates; (iv) synthesis of Ru NCs with hollow interiors and (v) synthesis of Ru NCs with other morphologies, e.g. chains, dendrites and branches. We aim at highlighting the synthetic approaches and growth mechanisms of these types of Ru NCs. We also introduce the detailed characterization tools for analysis of Ru NCs with different sizes/shapes. With respect to the creation of great opportunities and tremendous challenges due to the accumulation in noble metal nanomaterials, we briefly make some perspectives for the future development of Ru NCs so as to provide the readers a systematic and coherent picture of this promising field. We hope this reviewing effort can provide for technical bases for effectively designing and producing Ru NCs with enhanced physical/chemical properties. Graphical Abstract: The solution-based methods for size and shape-controlled synthesis of ruthenium nanocrystals as well as the mechanisms behind them are extensively reviewed.

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