Biostratigraphic and tectonic significance of the Paleogene to early Miocene carbonate rocks : Mineoka Tectonic Belt and Kyushu-Palau Ridge

Thesis (Ph.D. in Science)--University of Tsukuba, (A), no. 1687, 1997.3.2

A Study of the Constitutive Models Used in Analyzing Dynamic Strain Aging in Austenitic Stainless Steel 304

When triggered, dynamic strain aging has a significant impact on the microstructural mechanical behavior of austenitic stainless steel 304 high performance alloy. The dynamic strain aging phenomenon has been shown to cause significant additional hardening in several experimental studies. To effectively predict the behavior of the material, it is required to employ a constitutive model that includes dynamic strain aging. The extra hardness brought on by dynamic strain aging is captured in this study by the proposal of a novel constitutive model (VAS model) for Austenitic Stainless Steel (ASS) 304 high performance alloy. As part of this study, the developed model has been applied to austenitic stainless steel 304 to demonstrate its ability to accurately model dynamic strain aging behavior that was discovered over a wide temperature range (723-923 k at 50 k intervals) and strain rates of 0.0001/s and 0.001/s under quasi-static loading. In order to determine which constitutive model best examined the additional hardness caused by DSA, four models—the Voyiadjis-Abed-Song (VAS), Voyiadjis-Abed (VA), Johnson Cook (JC), and modified-Zerilli Armstrong (m-ZA) models—were employed in this work

Dilated cardiomyopathy: a pharmacotherapeutic research

Background: AHA defines cardiomyopathies as a heterogeneous group of diseases of the myocardium associated with mechanical and/or electrical dysfunction that usually (but not invariably) exhibit inappropriate ventricular hypertrophy or dilatation and are due to a variety of causes that frequently are genetic.Methods: This is a prospective observational study conducted in the year 2017 at an OPD of Cardiology of a private hospital located in Telangana state, India. Data has been collected after diagnosis is made and treatment regimen is given by an Interventional Cardiologist.Results: Data has been collected from 78 cardiac patients, out of which 17.9% patients had Dilated Cardiomyopathy (DCM) among them 57.14% were male. In the present study DCM was reported more in the age group of 61-70 years (42.85%). Treatment pattern in most of the prescriptions include Diuretics, Beta blockers, Angiotensin Converting Enzyme Inhibitors (ACEI), Angiotensin Receptor Blockers (ARBs), Cardiac Glycosides, Antiplatelet and Antihyperlipidaemics.Conclusions: To conclude, lack of awareness among people about this disease is leading it to progress to advanced stages and prognosis of which is poor. Conducting community awareness programs can play a key component in improving the prognosis of this disease

Gender Role, Working Women and Family: a Sociological Study on some selected professionals in Chittagong City, Bangladesh

The article scopes to analyze the role of women in family after getting job. The study that we conducted showed that women’s traditional role in the context of family in Bangladesh didn’t change. Rather those who are working, have to perform dual job. They maintain both family and work together. In family, they make breakfast, cook lunch and dinner, rear and care children, look after elderly and young members, deal family problems and troubles etc. Simultaneously, in work, they conduct their respective jobs and duties. This type of duality sometimes creates trouble in family and carrier. According to study, as a professional woman, working women (WW) cannot manage their family properly and cannot give quality time to their children. On the other, due to huge pressure from family activities, they cannot concentrate properly to their work, which may affect their carrier. Joint family is an ideal place for working women, where other members can help them and single family is a difficult place for (WW) because they don’t get any help from others. To understand these relationships, some statistical tools have been applied

Decision Making Style in Islam: A Study of Superiority of Shura(Participative Management) and Examples from Early Era of Islam

Shura or Consultative Management is as a toll to arrive at a consensus on management decision of great importance to the community or organization rather than on routine daily decision of the organization. The holy prophet Mohammad (saw) and his immediate successors ran the administration of the polity with the aid and advice of men having acumen in matters religious, social, economic and political. The consultation must be trustworthy. But if the matters relates to the mundane affairs of the believers for which counsel is sought, then the consultant should be wise enough to give a sound opinion. Modern management thinkers and practitioners can find many lessons about decision making from the events of the golden era of Islam. It is expected that present study will indicate the fact that the Shura or consultative management is a toll which ensure not only the better management, but also ensure the peace, cooperation, coexistence and progress of the organization as well as positive impacts to the society. It is concluded that decision making style of consultative management in Islam produces much shared value for all aspect which is bigger challenging in conventional management practices. Keywords: Management, Consultation, Decision, Divine, Shura

Assessing the diversity of freshwater bacteria and viruses

Microbial water communities are a complex consortium of bacteria, viruses and protozoa. These complex microbial and viral communities may contain pathogens that cannot be detected by conventional methods. Next-generation sequencing (NGS) offers the potential to exhaustively characterize all microbial and viral components of a given water sample and facilitates the identification and quantification of pathogens of interest. The goals of this thesis were to assess the dynamics and the diversity of freshwater bacterial and viral communities of the lower Great Lakes region and identify pathogenic bacterial and viral species. We first assessed the diversity of viral communities in six different beaches of Lake Ontario and Lake Erie, two of the largest freshwater reservoirs in North America. We employed a robust and routinely applicable approach that can provide a comprehensive analysis of bacterial and viral community composition. Our analysis suggests that the viral communities of the lower Great Lakes region are dominated by bacteriophages but also contained viruses of plants and animals. Exhaustive characterization of bacterial communities indicates that the bacterial community composition is highly diverse, and the diversity differs between recreational waters and beach sands. In addition, we identified sequences of pathogens that are not currently included in traditional water monitoring schemes in both recreational water and beach sand. To investigate the impact of spatiotemporal and environmental factors on the distribution of bacterial species, we employed a computational approach and our analysis suggests that dissolved oxygen (DO) level is strongly associated with bacterial community diversity. Using a computational approach, we have also identified habitat-specific bacterial species and a possible link between inter-connected habitats. The findings of this thesis aid in our understanding of bacterial and viral community diversity in recreational waters and provide useful information to water quality decision makers.ThesisDoctor of Philosophy (PhD

Unverified information in social networks: analysis from an Islamic perspective

In contemporary society, social media has evolved into an indispensable and pervasive tool, impacting individuals worldwide across various dimensions, including the personal, social, economic, and political spheres. The basic expectation from social networks is to serve the people and society by providing important, authentic information and verified news. Unfortunately, false news, rumours and fabricated information on social networks have become a threat to individuals, and a destructive tool for peace and societal harmony. The unregulated proliferation of hoaxes on social networks can lead to a myriad of societal disruptions and issues, thereby intensifying the need for harmonious and peaceful coexistence as advocated by both individuals and society at large. This is a qualitative descriptive article that explores the Islamic understanding and rulings on the spread of unverified information in social networks intentionally for gaining personal interest or political advantages. The article also recommends some ethical and moral precepts of revealed knowledge to ensure the proper use of social networks for the benefit of individuals and community, and to avoid unethical violation and immoral actions

Effect of Pressure and Temperature on Electrical Conductivity of CNT-PEEK Composites

This thesis investigates the effect of pressure and temperature on electrical conductivity of CNT-PEEK composites. The nanocomposites were manufactured using a co-rotating intermeshing twin screw extruder and the samples of required size and shape were fabricated by compression molding. Electrical properties of the nanocomposite samples were measured by Dielectric Analyzer (DEA) and a detailed analysis is presented in the framework of percolation theory. It was identified that nanotube contact resistance due to the formation of a thin insulating polymer layer around carbon nanotubes plays an important role in determining the overall conductivity of the samples. Detailed analysis of this contact resistance is presented based on experimental results in combination with theoretical models. To investigate the effect of temperature and pressure on electrical conductivity, highly conductive samples with three different nanotube weight concentrations (8%, 9% and 10%) were selected. Metallic coatings (gold/silver epoxy) are conventionally used as electrodes to measure electrical conductivity at ordinary temperature and pressure. To measure electrical conductivity of these samples at elevated pressure and temperature, a new technique was developed to measure DC electrical conductivity by introducing a conductive copper mesh. Change of electrical conductivity of the samples was investigated under application of high compression, high temperature and a combination of both. Conduction mechanisms for both pressure and temperature were discussed on the basis of experimental findings. It was found that electrical conductivity increases up to a certain level due to application of both pressure and temperature. The effect was more significant at lower pressure and temperature. In the case of repeated loading-unloading and heating-cooling cycles, hysteresis and electrical set were observed. The pressure always acts favorably in increasing electrical conductivity while the effect of temperature was found to be complex, controlled by parameters that counteract each other, especially when it was heated above the glass transition temperature and the nanotube content was high. Two possible mechanisms, namely, ‘conduction by electron transport (nanotube contact)’ and ‘conduction by electron tunneling’ were identified to explain such contradicting behavior. Sensitivity of the samples was also checked for possible application as sensor