scholarly journals Provenance studies using lead isotopy: contribution of the consideration of geological contexts in archaeological databases

2021 ◽  
Author(s):  
Céline Tomczyk ◽  
Kévin Costa ◽  
Alain Giosa ◽  
Patrice Brun ◽  
Christophe Petit
Keyword(s):  
Qualitative Data ◽  
Lead Isotopes ◽  
Isotopic Signature ◽  
Ore Deposits ◽  
Provenance Studies ◽  
Source Tracing ◽  
Isotopic Analyses ◽  
Archaeological Artifacts ◽  
Metallurgical Processes

The question of sources of metal supply and the resulting trade circuits are at the heart of archaeological issues. Provenance studies using lead isotopy has been used since the 1980s to identify the ore deposits from which the metal composing an archaeological object is derived. Indeed, metallurgical processes do not affect the isotopic signature of lead, which remains unchanged between ore and finished product. However, such studies require mineral signature repositories. Archaeologists have therefore built up databases, rich in thousands of analyses. However, these databases only very rarely include gitological information. In addition, lead isotopes are also used in geology but in order to characterize the metallogenic phenomena that lead to the creation of ore deposits. This different type of study requires different sampling: unlike archaeological databases, which include many analyses by mine, geological repositories have very few measurements by deposit. However, although containing few analyses per mine, geological data allow reflection in terms of restricted mineralized subsets and observation of marked groupings in binary diagrams as well as in multidimensional projection. The integration of gitological contexts as qualitative data could thus avoid the problems of statistical discrimination that are common in studies of the provenance of archaeological artifacts. The databases created by geologists, which also count thousands of mineral analyses, can thus be perfectly integrated into production source tracing studies. The finesse of the statistical breakdowns provided by gitological data also opens up new possibilities for data processing through the use of multivariate statistics. Geographical uncertainties are then a function of the quality of the available gitological metadata. Lead isotopic analyses carried out as part of geological studies have much to contribute to the tracing of archaeological production sources.

scholarly journals The Moroccan Massive Sulphide Deposits: Evidence for a Polyphase Mineralization

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 156 ◽  
Author(s):  
Abderrahim Essaifi ◽  
Kathryn Goodenough ◽  
Fernando Tornos ◽  
Abdelhak Outigua ◽  
Abdelmalek Ouadjou ◽  
...  
Keyword(s):  
Lead Isotopes ◽  
Shear Zones ◽  
Structural Features ◽  
Isotopic Signature ◽  
Ore Deposits ◽  
Massive Sulphide ◽  
Isotopic Signatures ◽  
Crustal Block ◽  
Massive Sulphide Deposits ◽  
Sulphide Deposits

This work provides an overview of the geological, geochemical, and metallogenic data available up to date on the Moroccan massive sulphide deposits, including some new results, and then discusses the evidences for the epigenetic and syngenetic hypotheses. All of the ore deposits are located within a crustal block located at the intersection between two major shear zones and are characterized by a sustained and long-lived magmatic activity. The ore deposits are located within second-order shear zones, which played an important role in controlling the geometry of the mineralization. The mineralization lacks the unequivocal textural and structural features that are indicative of a sedimentary or diagenetic origin, and a syntectonic to late-tectonic pyrite-rich assemblage is superimposed on an earlier, pretectonic to syntectonic pyrrhotite-rich mineralization. Each deposit has a distinctive pyrrhotite sulfur isotopic signature, while the sulfur isotopic signature of pyrite is similar in all deposits. Lead isotopes suggest a shift from a magmatic source during the pyrrhotite-rich mineralization to a source that is inherited from the host shales during the pyrite-rich mineralization. The O/H isotopic signatures record a predominance of fluids of metamorphic derivation. These results are consistent with a model in which an earlier pyrrhotite-rich mineralization, which formed during transtension, was deformed and then remobilized to pyrite-rich mineralization during transpression.

scholarly journals Plumbotectonics of Moroccan ore deposits

2021 ◽  
Author(s):  
Eric MARCOUX ◽  
Michel JEBRAK
Keyword(s):  
Mineral Exploration ◽  
Lead Isotopes ◽  
Isotopic Signature ◽  
Ore Deposits ◽  
Single Event ◽  
Isotopic Geochemistry ◽  
Mvt Deposits ◽  
Isotopic Variations ◽  
204Pb Ratio ◽  
Good Transfer

The synthesis of 240 lead isotopes analyzes, measured on Moroccan ore deposits of Ediacarian to Neogene ages located in all geotectonic domains of Morocco allows a global reflection on the metallogeny of Morocco. The isotopic compositions vary widely, from 17.738 (Bou Skour) to 18.905 (Draa Sfar) for the 206Pb/204Pb ratio, and from 15.521 to 15.706 for the 207Pb/204Pb ratio. The source of lead in the studied deposits is located in the upper continental crust, except for those in the Anti-Atlas (Bou Skour, Imiter, etc.) and some in the High Atlas (Azegour) with a clear mantellic contribution. Isotopic variations noted at the scale of a district result either from the presence of several superimposed hydrothermal events calling upon different local sources as at Tighza, or from a single event disturbed by the segmentation of a volcanosedimentary basin, as for the Jebilet and Guemassa ore deposits. At the scale of the deposit (Draa Sfar, Bou Skour), isotopic variations result from the superposition of several hydrothermal events each with their own lead and associated metals. Overall, we can distinguish three generations of lead incorporated successively into the Moroccan geological base by magmatism and / or hydrothermalism, characterized by their 206Pb/204Pb ratios: 17.74-17.90 (Ediacarian), 18.10-18.40 (Hercynian) and 18.75-18.90 (Alpine). Ediacarian lead is present in the Anti-Atlas, and very locally in the meseta (Bouznika), and feeds in part on the mafic magmatism of Gondwana. Hercynian lead is the most represented and displays a definitive rupture in the source of metals, which is now exclusively crustal. It invades all Moroccan areas, including the Anti-Atlas, where it re-mobilizes and mixes with the Ediacaran lead. Alpine lead, more discreet, marks out the large scarf going from Agadir to Nador which traces on the surface the mantle plume of the Canaries and accompanies a Neogene magmatism which may also have acted as a simple engine remobilizing Hercynian lead, in particular to form MVT deposits from Touissit. The Hercynian and Alpine lead influxes are partly responsible for resetting the mineralizations, as at Bou Azzer or Imiter. In the Sawkins’s model, lead isotopic results support successive remobilisations of lead stored in primary and secondary tanks, as well as inheritance phenomena. Finally, the good transfer of the isotopic signature of lead from deposits to surface gossans shows that the isotopic geochemistry of lead is a useful tool for mineral exploration in Morocco.

scholarly journals “Is this the GVHD?” A qualitative exploration of quality of life issues in individuals with graft-versus-host disease following allogeneic stem cell transplant and their experiences of a specialist multidisciplinary bone marrow transplant service

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Isabella de Vere Hunt ◽  
James M. Kilgour ◽  
Robert Danby ◽  
Andy Peniket ◽  
Rubeta N. Matin
Keyword(s):  
Quality Of Life ◽  
Bone Marrow ◽  
Stem Cell ◽  
Stem Cell Transplantation ◽  
Graft Versus Host Disease ◽  
Allogeneic Stem Cell Transplantation ◽  
Qualitative Data ◽  
Information Provision ◽  
Graft Versus Host

Abstract Background Graft-versus-host disease (GVHD) is a significant cause of morbidity and mortality following allogeneic stem cell transplantation. These patients face unique challenges due to the complexity of GVHD which can affect multiple organ systems, and the toxicity of treatments. Despite the known impact on quality of life (QOL), qualitative data within the bone marrow transplantation (BMT) literature is rare, and there has been no qualitative work exploring patient experience of specialist healthcare provision for GVHD in the United Kingdom. Methods We conducted a primary explorative qualitative study of the experience of QOL issues and multidisciplinary care in patients with chronic GVHD following allogeneic stem cell transplantation. Eight patients were identified using convenience sampling from specialist BMT outpatient clinics. Following consent, patients were interviewed individually via telephone. Transcripts of interviews were analyzed using an inductive thematic approach. Results Mean participant age was 61-years-old (range 45–68), with a mean time post-transplant of 3 years at time of interview (range 3 months–15 years). Five key QOL themes were identified: (1) ‘Restricted as to what I can do’; (2) Troubling symptoms—‘you can sort of get GVHD anywhere’; (3) Confusion/uncertainty over GVHD symptoms—‘Is this the GVHD?’; (4) Unpredictable course and uncertainty about the future; and (5) Adapting to the sick role. In addition, four themes related to experience of service provision were identified: (1) personal care and close relationship with BMT nurses; (2) efficiency versus long waits—‘On the case straight away’; (3) information provision—‘went into it with a bit of a rosy view’; and (4) the role of support groups. Conclusions These qualitative data reflect the heterogeneity of experiences of the GVHD patient population, reflecting the need for a flexible and nuanced approach to patient care with emphasis on comprehensive information provision. We have identified the key role that BMT specialist nurses within the multidisciplinary team play in supporting patients. We advocate future research should focus on ways to meet the complex needs of this patient group and ensure that the personal care and close relationships are not lost in service redesigns embracing remote consultations.

THE ROLE OF LIBRARY ON THE IMPLEMENTATION OF THE LEARNING PROGRAM IN SDIT SALSABILA 2 KLASEMAN YOGYAKARTA

2021 ◽  
Vol 4 (1) ◽  
pp. 12-31
Author(s):  
Alifia Intan Sekar Sari ◽  
Ihda A'yunil Khotimah
Keyword(s):  
Elementary Schools ◽  
Qualitative Data ◽  
Human Person ◽  
Information Resources ◽  
Service Systems ◽  
Learning Program ◽  
Recreation Areas ◽  
Qualitative Data Collection

ABSTRACTLibraries have an important role in the field of education, for research purposes, preservation of information resources and recreation areas. Libraries also have a role in increasing the intelligence and empowerment of the nation, as a human person who always wants to advance and the development of institutions that are increasingly experiencing intense competition. This study seeks to see the role of the library in improving the quality of elementary schools at SDIT Salsabila 2 Klaseman, both with regard to student achievement and the progress of the institution. The type of research used is descriptive qualitative, data collection is done by looking directly at the object of research (direct observation) interviews and documentation. The results of this study indicate that libraries have an important role in improving the quality of elementary schools such as the development of library facilities; there is a special room, a growing collection of books, modern service systems, air-conditioned room facilities, computers and LCD projectors are available and also supports children's achievements in winning several championships including in the PAI quiz competition and the MIPA OlympiadKeywords: Quality Improvement of Elementary Schools: The Role of Libraries

Experience in the development of innovative underground geotechnologies for mining of ore deposits

2020 ◽  
pp. 338-350
Author(s):  
I. V. Sokolov ◽  
Y. G. Antipin ◽  
N. V. Gobov ◽  
I. V. Nikitin
Keyword(s):  
Systematic Approach ◽  
Underground Mining ◽  
Mineral Resources ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Operating Costs ◽  
Processing Waste ◽  
Ore Preparation ◽  
Additional Value

Based on an analysis of the design principles and practice of underground mining of ore deposits, the most significant features, trends to develop and directions to enhance of underground geotechnology in the field of opening and preparation, mining systems, filling works and ore preparation have been established. The main signs of innovation - scientific research and implementation in production in order to obtain additional value, are highlighted. Various approaches to the development of innovative underground geotechnologies are shown and a methodology for their justification is formulated based on a systematic approach implemented in the framework of the concept of integrated development of mineral resources and on the principles of economic efficiency, industrial and environmental safety, completeness of subsoil development. The experience of the IM UB RAS on the development and implementation of innovative underground geotechnologies in the design and industrial operation of a number of ore deposits is given, which significantly increased the completeness and quality of ore extraction from the subsoil, increased labor productivity in sinking and stoping works, reduced capital and operating costs for ore mining and to utilize mining and processing waste in the mined-out space.

scholarly journals Mixed or Complementary Messages: Making the Most of Unexpected Assessment Results

2016 ◽  
Vol 77 (2) ◽  
pp. 197-211 ◽  
Author(s):  
Phil Jones ◽  
Julia Bauder ◽  
Kevin Engel
Keyword(s):  
Mixed Methods ◽  
Action Research ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Important Research ◽  
Action Research Project ◽  
Research Project ◽  
Research Literacy ◽  
Initial Results

Grinnell College participated in ACRL’s first cohort of Assessment in Action (AiA), undertaking a mixed-methods action research project to assess the effectiveness of librarian-led research literacy sessions in improving students’ research skills. The quantitative data showed that the quality of students’ sources did not markedly improve following a research literacy session, while the qualitative data indicated that many students were able to state and describe important research concepts they learned. This article profiles the development of Grinnell’s AiA project and discusses how Grinnell’s librarians responded when the initial results led to more questions rather than to satisfactory answers.

scholarly journals Civil Service Recruitment: Problems Connected With Federal Character Policy in Nigeria

2014 ◽  
Vol 4 (2) ◽  
pp. 12
Author(s):  
Emmanuel Jude Abiodun Akinwale
Keyword(s):  
Data Collection ◽  
Qualitative Data ◽  
Civil Service ◽  
National Policy ◽  
State Representation ◽  
National Integration ◽  
Federal Civil Service ◽  
Qualitative Data Collection

The purpose of this paper is to assess the extent of relevance of the federal character as a national policy in recruitment into the Nigerian federal civil service and probe whether or not the level of application of merit supersedes the application of ecological considerations in recruitment into the service. It utilizes quantitative and qualitative data collection to espouse its theme. The paper finds that there are personnel problems connected with poor application of federal character policy in recruitment into the civil service and this affects the quality of entrants. It recommends strict application of merit standard to attract best workers while implementing federal character policy through proven certification of state of applicants. The paper notes that the Nigerian federal character policy is one that places premium on state representation in governance and bureaucracy and a strategy for national integration. However, there must be predominant application of merit in recruitment.

scholarly journals Two concepts of community in the Niger Delta

2017 ◽  
Vol 10 (3) ◽  
pp. 254-269 ◽  
Author(s):  
Nwamaka Okeke-Ogbuafor ◽  
Tim Gray ◽  
Selina Stead
Keyword(s):  
Sense Of Place ◽  
Niger Delta ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Strong Sense ◽  
Content Type ◽  
Solid Foundation ◽  
Attachment To Place ◽  
Poor Communities

Purpose This paper aims to understand what two apparently contrasting concepts of communality and place attachment say about the quality of community life in the Niger Delta. Design/methodology/approach The research for this paper relied on extensive qualitative and quantitative data: qualitative data were collected from five oil-rich and three oil-poor communities across Ogoniland, while quantitative data were collected from four of these communities. Thematic content analysis was used to interpret the qualitative data, while the quantitative data were analysed through Excel. Findings Most participants from both oil-rich and oil-poor communities strongly reject a social sense of communality and strongly endorse a geographical sense of place. Practical implications The wider implication of this finding is that proponents of community development (CD) have a choice between either the cynical option of noting that Ogoni’s strong sense of place means that they will tolerate limited CD, or the noble option of noting that Ogoni’s strong sense of place is a solid foundation on which to build sustainable CD by empowering citizens to create their own future. Originality/value The originality of this study is twofold. First, it shows the complexity of people’s sense of community encompassing widely different and possibly contradictory elements. Second, it reveals the strength and persistence of people’s attachment to place despite its physical shortcomings.

scholarly journals CORPORATE BRANDING COWORKING PLACE IN BANDUNG (CORPORATE BRANDING COWORKING SPACE DI BANDUNG)

EDUTECH ◽  
2017 ◽  
Vol 16 (2) ◽  
pp. 122
Author(s):  
Dewi Damayanti ◽  
Evi Novianti ◽  
Centurion C. Priyatna
Keyword(s):  
Corporate Culture ◽  
Product Differentiation ◽  
Corporate Branding ◽  
Qualitative Data ◽  
Corporate Image ◽  
Target Market ◽  
Business Opportunity ◽  
Conducting Research ◽  
Descriptive Method

The title of this research is “Corporate Branding Coworking Space in Bandung” with the subtitle is “Descriptive Study of Corporate Branding Coworking Space in Bandung to Create Product Differentiation”. The high demand for economical workspace makes business coworking space growing. The growth happen in Bandung and make the level of competition coworking space in Bandung is quite high, especially with the uniformity of the product offered each coworking space. Seeing these growth, researchers interested in conducting research on how corporate branding coworking space in Bandung to create product differentiation.The purpose of this study is to discover how company create the vision, implemented vision to their corporate culture, and the compability between their vision and image of Bandung Digital Valley, Freenovation, and Ruang Reka that stakeholder created. The method used in this research is descriptive method with qualitative data and Hatch & Schultz’s concept of corporate branding. The data collection techniques used in interviews, observation, and documentation study.The result of this study indicate that Bandung Digital Valley, Freenovation, and Ruang Reka focus to introduce the company to their target market. Started from create the vision of the company by founder based on their experiences and business opportunity. Then, the application of corporate vision to corporate culture. Non of Bandung Digital Valley, Freenovation, or Ruang Reka implement the vision into corporate culture. Last, Bandung Digital Valley, Freenovation, and Ruang Reka think it is not a right time to create corporate image because they need to improve the quality of their facility first.   Keywords : corporate branding, product differentiation, Bandung Digital Valley, Freenovation, Ruang RekaJudul penelitian yang diangkat adalah “Corporate Branding Coworking Space di Bandung” dengan sub judul Studi Deskriptif mengenai Corporate Branding Coworking Space di Bandung dalam Melakukan Diferensiasi Produk”.  Tingginya kebutuhan akan ruang kerja yang ekonomis membuat bisnis coworking space semakin berkembang. Perkembangan ini terjadi di Bandung dan membuat tingkat persaingan coworking space di Bandung cukup tinggi, terlebih dengan keseragaman produk yang ditawarkan tiap coworking space. Melihat perkembangan tersebut, peneliti tertarik untuk melakukan penelitian mengenai bagaimana corporate branding coworking space di Bandung dalam melakukan diferensiasi produk. Tujuan penelitian ini adalah untuk mengetahui bagaimana pembentukan visi perusahaan, pengimplementasian visi ke dalam budaya, dan kesesuaian citra dengan visi Bandung Digital Valley, Freenovation, dan Ruang Reka yang dihasilkan oleh stakeholder. Mengacu kepada konsep Corporate Branding dari Hatch dan Schultz. Metode penelitian yaitu metode deskriptif dengan data kualitatif. Teknik pengumpulan data dengan wawancara, observasi, dan studi dokumentasi. Setelah melakukan penelitian hasil yang didapat menunjukkan bahwa Corporate branding Bandung Digital Valley, Freenovation, dan Ruang Reka diakui fokus pada pengenalan perusahaan ke target pasarnya. Dimulai dengan pembentukan visi oleh pendiri melihat dari pengalaman dan peluang yang dimiliki. Lalu, penerapan visi pada setiap aspek perusahaan, salah satunya budaya perusahaan tidak dilakukan oleh seluruh coworking space. Terakhir, pembentukan citra kepada stakeholder dirasa belum saatnya karena masih perlu meningkatkan kualitas internal namun sudah ada usaha kesana yang tidak disadari oleh  Bandung Digital Valley, Freenovation, dan Ruang Reka.Kata Kunci : pembentukan merek perusahaan, diferensiasi produk, Bandung Digital Valley, Freenovation, Ruang Reka.

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