scholarly journals Management of Solid Waste Marble Powder: Improving Quality of Sodium Chloride Obtained From Sulphate Rich Lake/Subsoil Brines With Simultaneous Recovery of High Purity Gypsum and Light Basic Magnesium Carbonate

2021 ◽  
Author(s):  
Rahul J. Sanghavi ◽  
Sumesh C. Upadhyay ◽  
Arvind Kumar
Keyword(s):  
High Purity ◽  
Magnesium Carbonate ◽  
Common Salt ◽  
Stoichiometric Ratio ◽  
Abandoned Land ◽  
Edible Purpose ◽  
Marble Dust ◽  
Marble Powder ◽  
The Common

Abstract Marble industry worldwide produces large amount of non-degradable marble dust powder (MDP) waste during mining and processing stages. MDP mainly comprises of CaCO3 with small amounts of Mg, Fe or Si in various forms. In India, mainly in Rajasthan state, marble is quarried in huge amounts and MDP thus produced is collected improperly and dumped at any abandoned land or identified disposal sites leading to several environment hazards. On the other hand, the composition of sub soil/lake brines of Rajasthan is typical in nature as it does not have much Ca2+ and Mg2+ impurities but contains higher levels of SO42-. Therefore, the common salt (NaCl) produced from such brines is contaminated with Na2SO4 (8-30 wt%) depending upon SO42- concentration in the brine. Such a salt produced is neither suitable for edible purpose nor for industrial usage. Herein, we have reacted MDP with HCl, and the resulting solution (CaCl2 and MgCl2 slurry) is used in stoichiometric ratio of Ca2+ to SO42- in brines to produce high purity NaCl and gypsum (CaSO4·2H2O) via fractional crystallization. Remaining magnesium containing solution was reacted with Na2CO3 to prepare high purity light basic magnesium carbonate hydrate. Purity of crystallized NaCl, CaSO4·2H2O and MgCO3·6H2O has been ascertained through analytical and spectral methods (TGA, FTIR, P-XRD). Field emission scanning electron microscopy (FE-SEM) was used to elucidate morphology of crystals. The method reported for improving purity of NaCl along with CaSO4·2H2O and MgCO3·6H2O production from sulphate rich brines is simple and economic, and allow management of MDP generated in huge amounts, which poses problems of disposal and creates environment hazards.

The concept of motivation for effective credit risk management

2020 ◽  
Vol 26 (11) ◽  
pp. 2567-2593
Author(s):  
M.V. Pomazanov
Keyword(s):  
Risk Management ◽  
Economic Modeling ◽  
Type I ◽  
Credit Risk Management ◽  
Curve Modeling ◽  
Business Functions ◽  
The Common ◽  
Lending Decisions ◽  
The One

Subject. The study addresses the improvement of risk management efficiency and the quality of lending decisions made by banks. Objectives. The aim is to present the bank management with a fair algorithm for risk management motivation on the one hand, and the credit management (business) on the other hand. Within the framework of the common goal to maximize risk-adjusted income from loans, this algorithm will provide guidelines for ‘risk management’ and ‘business’ functions on how to improve individual and overall efficiency. Methods. The study employs the discriminant analysis, type I and II errors, Lorentz curve modeling, statistical analysis, economic modeling. Results. The paper offers a mechanism for assessing the quality of risk management decisions as opposed to (or in support of) decisions of the lending business when approving transactions. The mechanism rests on the approach of stating type I and II errors and the corresponding classical metric of the Gini coefficient. On the ‘business’ side, the mechanism monitors the improvement or deterioration of the indicator of changes in losses in comparison with the market average. Conclusions. The study substantiates the stimulating ‘rules of the game’ between the ‘business’ and ‘risk management’ to improve the efficiency of the entire business, to optimize interactions within the framework of internal competition. It presents mathematical tools to calculate corresponding indicators of the efficiency of internally competing entities.

scholarly journals Development of a Multidisciplinary Aerodigestive Program: An Institutional Experience

Children ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 535
Author(s):  
Seung Kim ◽  
Mireu Park ◽  
Eunyoung Kim ◽  
Ga Eun Kim ◽  
Jae Hwa Jung ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Chart Review ◽  
Retrospective Chart Review ◽  
Multidisciplinary Management ◽  
Neurologic Disease ◽  
Institutional Experience ◽  
Swallowing Difficulty ◽  
The Common ◽  
Chronic Comorbidities

We share our experience on the implementation of a multidisciplinary aerodigestive program comprising an aerodigestive team (ADT) so as to evaluate its feasibility. We performed a retrospective chart review of the patients discussed at the monthly ADT meetings and analyzed the data. A total of 98 children were referred to the ADT during the study period. The number of cases increased steadily from 3.5 cases per month in 2019 to 8.5 cases per month in 2020. The median age of patients was 34.5 months, and 55% were male. Among the chronic comorbidities, neurologic disease was the most common (85%), followed by respiratory (36%) and cardiac (13%) disorders. The common reasons for consultation were suspected aspiration (56%), respiratory difficulty (44%), drooling/stertor (30%), regurgitation/vomiting (18%), and feeding/swallowing difficulty (17%). Following discussions, 58 patients received active interventions, including fundoplication, gastrostomy, laryngomicrosurgery, tracheostomy, and primary dilatation of the airway. According to the questionnaire of the caregiver, the majority agreed that the main symptoms and quality of life of patients had improved (88%), reducing the burden on caregivers (77%). Aerodigestive programs may provide comprehensive and multidisciplinary management for children with complex airway and digestive tract disorders.

scholarly journals Mind the Gap: Why the Landscape Planning System in Sardinia Does Not Work

2021 ◽  
Vol 13 (13) ◽  
pp. 7300
Author(s):  
Anna Maria Colavitti ◽  
Alessio Floris ◽  
Sergio Serra
Keyword(s):  
Landscape Planning ◽  
Comparative Method ◽  
Poor Quality ◽  
Planning System ◽  
Local Planning ◽  
The Common ◽  
Regional Landscape ◽  
Landscape Protection

In Italy, after the introduction of the Code of Cultural Heritage and Landscape in 2004, the Regional Landscape Plan (RLP) has acquired a coordination role in the urban planning system, for the implementation of policies for landscape protection and valorisation. The case study of the RLP of Sardinia is a paradigmatic application to the coastal area of the island, which is considered most vulnerable and subject to settlement pressure. The objectives of preservation and valorisation of the territorial resources should be transferred into local planning instruments by adopting strategies aimed at the preservation of the consolidated urban fabric, at the requalification and completion of the existing built-up areas according to the principles of land take limitation and increase in urban quality. The paper investigates the state of implementation and the level of integration of landscape contents in the local plans that have been adapted to the RLP, using a qualitative comparative method. In addition, the results of the plan coherence checks, elaborated by the regional monitoring bodies after the adaptation process, have been analysed to identify the common criticalities and weaknesses. The results highlight the lack of effectiveness of the RLP, after more than a decade since its approval, considering the limited number of adequate local plans and the poor quality of their analytical and regulative contents in terms of landscape protection and valorisation. Conclusions suggest some possible ways to revise the RLP, focusing on the participation of local communities and the development of a new landscape culture.

scholarly journals A Mathematical Study of Barcelona Metro Network

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 557
Author(s):  
Irene Mariñas-Collado ◽  
Elisa Frutos Bernal ◽  
Maria Teresa Santos Martin ◽  
Angel Martín del Rey ◽  
Roberto Casado Vara ◽  
...  
Keyword(s):  
Clustering Analysis ◽  
Transportation Network ◽  
Point Of View ◽  
Statistical Point ◽  
Transport Services ◽  
Urban Public Transport ◽  
The Common ◽  
Subway Stations ◽  
Metro Network

The knowledge of the topological structure and the automatic fare collection systems in urban public transport produce many data that need to be adequately analyzed, processed and presented. These data provide a powerful tool to improve the quality of transport services and plan ahead. This paper aims at studying, from a mathematical and statistical point of view, the Barcelona metro network; specifically: (1) the structural and robustness characteristics of the transportation network are computed and analyzed considering the complex network analysis; and (2) the common characteristics of the different subway stations of Barcelona, based on the passenger hourly entries, are identified through hierarchical clustering analysis. These results will be of great help in planning and restructuring transport to cope with the new social conditions, after the pandemic.

QUALITY OF LIFE ASSESSMENT IN PATIENTS WITH ARTERIAL HYPERTENSION (LITERATURE REVIEW)

2021 ◽  
Author(s):  
OLGA MOSKALENKO ◽  
ROMAN YASKEVICH
Keyword(s):  
Quality Of Life ◽  
Arterial Hypertension ◽  
Current Problem ◽  
Life Assessment ◽  
Review Of The Literature ◽  
Quality Of Life Assessment ◽  
The Common ◽  
The Individual ◽  
Satisfactory Quality

A review of the literature on the current problem of medicine is presented. Arterial hypertension is one of the common chronic diseases for which the current goal of therapy is not recovery, but improvement of circulatory function with a satisfactory quality of life. The study of QOL and the factors influencing it can contribute to an increase in the individual effectiveness of treatment and complex rehabilitation of patients suffering from this pathology.

Creative Participation and the Expansion of Political Engagement

2021 ◽  
Author(s):  
Yannis Theocharis ◽  
Joost de Moor
Keyword(s):  
Political Participation ◽  
Public Space ◽  
Common Good ◽  
Political Engagement ◽  
Research Topic ◽  
The Common ◽  
Catch Up ◽  
Ongoing Assessment ◽  
Do So

Creative participation refers to citizens’ invention of, and engagement in, new action forms that aim to influence, or take responsibility for, the common good in society. By definition, these action forms are constantly evolving and cannot be listed or summarized. Yet some, like guerrilla gardening, have over time become more established in political repertoires, and specific arenas are known to be particularly productive sites for their development. These include in particular the Internet, and lifestyles and consumption. The constant changes in how citizens become active represented by creative participation present considerable challenges for scholars of political participation—both in terms of theory and methodology. In particular, such forms test our ability to distinguish political from nonpolitical activities. However, how political creative participation is, is often subtle and implicit, and therefore hard to establish. Yet being able to do so is essential for an ongoing assessment of the quality of participatory democracy. With conventional forms of participation declining and creative participation becoming more common, scholars must be able to agree on definitions and operationalizations that allow for the comparison of participatory trends. For instance, a key concern has been whether creative forms of participation crowd out more conventional ones, like voting or lobbying politicians. Developments in survey research have been able to show that this is not the case and that creative participation may in fact increase conventional participation. In addition, qualitative research methods like focus groups and ethnography, allow for more open-ended explorations of this elusive research topic. As to who participates, creative participation has enabled traditionally underrepresented groups like women and young people to catch up with, and sometimes overtake, those older men who have long dominated conventional political participation. Still, education remains a key obstacle even to creative participation. The COVID-19 crisis that took hold of the world in 2020 has compromised access to collective action and public space. It has thereby once more put the onus on citizens to engage creatively with ways to influence, and take responsibility for, society. At the same time, the crisis presents a need and opportunity for political participation scholarship to engage more deeply with theoretical debates about what it means to be political or to participate.

scholarly journals Accounting for the messiness of the research process: the fieldpath approach

2018 ◽  
Vol 13 (4) ◽  
pp. 315-332 ◽  
Author(s):  
Perttu Salovaara
Keyword(s):  
Qualitative Research ◽  
Design Methodology ◽  
Research Process ◽  
Content Type ◽  
Environmental Consequences ◽  
Human Ethics ◽  
Conceptual Paper ◽  
The Common ◽  
Practical Implications

Purpose It has recently become more acknowledged that there is a quality of “messiness” to the qualitative research process. The purpose of this paper is to introduce the fieldpath approach—a hermeneutically inspired framework—to account for the non-linearity, uncertainty and ambiguity of the research process. Design/methodology/approach This conceptual paper reviews how the scope of hermeneutics has been partly misunderstood. The paper discusses how the scope of hermeneutics has lately been expanded by works such as Günter Figal’s (2010) Objectivity: The Hermeneutical and Philosophy. Findings The fieldpath approach proposes that a heightened relation to materiality enables the messiness of the process to be preserved, while at the same time offering a way to find one’s footing in the midst of ontologically incomplete phenomena that are still—in a processual fashion—forming and becoming. Research limitations/implications This is a conceptual paper. In addition to the research mentioned here, more studies would be needed to legitimise, test and refine the approach. Practical implications Objectivity provides an additional criterion for researchers to lean on when facing the non-linearity and unexpected turns inherent in the qualitative research process. Social implications The stress on materiality involves an ethical dimension. Post-human ethics are concerned with the future environmental consequences and sustainability of the material world. The way that matter matters in our methodologies is of primary importance. Originality/value First, the paper emphasises that hermeneutics, contrary to the common perception, does offer criteria for evaluating between interpretations. Second, it introduces the notion of hermeneutic objectivity, which stresses the importance of materiality for interpretations. Third, it introduces the fieldpath approach, which, based on the previous criterion of hermeneutic objectivity, allows for the messiness of the research process, while also preserving a tight grip on the hermeneutic imperative of “understanding in a new way”.

scholarly journals Study of clay minerals effect on curing characteristics of polymer blends and physical-mechanical properties of prepared vulcanizates

2018 ◽  
Vol 157 ◽  
pp. 07010
Author(s):  
Beáta Pecušová ◽  
Mariana Pajtášová ◽  
Zuzana Mičicová ◽  
Darina Ondrušová ◽  
Andrea Feriancová ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Blends ◽  
Clay Minerals ◽  
Structural Type ◽  
Partial Replacement ◽  
Curing Characteristics ◽  
Dioctahedral Smectite ◽  
The Common ◽  
The Given

The given paper deals with the study of the properties of clay minerals, namely montmorillonite and moreover, it is focused on effect of these clay minerals on the curing characteristics of the polymer blends and the physical-mechanical properties of prepared vulcanizates. Montmorillonite is a major clay mineral which has a wide application in many industrial branches. It belongs to the group of dioctahedral smectite minerals with structural type in the ratio of 2:1. Characteristics of prepared modified and organomodified clay minerals are based on sulphur vulcanisation accelerators which are used for the preparation of real polymer blend where they represent a partial replacement of the common carbon black filler and then, the effect on the curing characteristics of polymer blends as well as physical-mechanical properties of the prepared vulcanizates are investigated. The results exhibit that the clay-based filler (modified and organomodified clay minerals) can be used as a partial replacement while the quality of the prepared blends is preserved.

Sign in / Sign up

Export Citation Format

Share Document