45 research outputs found
Green and Sustainable Synthesis of Silver and Gold Nanoparticles: A Stevia Leaf Extract Approach
No full text: Silver and gold nanoparticles were synthesized by reducing silver and gold ions using previously unexplored stevia extracts prepared with water, methanol, and ethanol as solvents. These extracts served as both reducing and stabilizing agents. The nanoparticles were characterized using ultraviolet-visible (UV-Vis) spectroscopy, which confirmed surface plasmon resonance (SPR) at 400-450 nm for AgNPs and 500-550 nm for AuNPs, with an additional peak at 650-700 nm. Zeta potential analysis revealed polydispersity index (PdI) values of 0.269, 0.328, and 0.184 for AgNPs, and 0.428, 0.366, and 0.408 for AuNPs in water, ethanol, and methanol extracts, respectively. The Z-average particle sizes were 68.66, 163.9, and 146.4 nm for AgNPs, and 207.2, 96.27, and 160.6 nm for AuNPs. TEM images confirmed that the nanoparticles were spherical and well-dispersed. FTIR analysis indicated that functional groups such as hydroxyl and carbonyl from the stevia extracts were involved in the reduction and stabilization of nanoparticles. This study highlights the potential of Stevia rebaudiana extracts as efficient, eco-friendly agents for the synthesis of metallic nanoparticles, offering a sustainable alternative to conventional chemical and physical methods with potential applications in antimicrobial and biomedical fields
Thermal conductance of interfaces between titanium nitride and group IV semiconductors at high temperatures
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Samreen Khan, Xinping Shi, Joseph Feser, Richard Wilson; Thermal conductance of interfaces between titanium nitride and group IV semiconductors at high temperatures. Appl. Phys. Lett. 22 July 2024; 125 (4): 041601. https://doi.org/10.1063/5.0220124 and may be found at https://doi.org/10.1063/5.0220124.
© 2024 Author(s). Published under an exclusive license by AIP Publishing.
This article will be embargoed until 07/22/2025.Measuring the temperature dependence of material properties is a standard method for better understanding the microscopic origins for that property. Surprisingly, only a few experimental studies of thermal boundary conductance at high temperatures exist. This lack of high temperature data makes it difficult to evaluate competing theories for how inelastic processes contribute to thermal conductance. To address this, we report time domain thermoreflectance measurements of the thermal boundary conductance for TiN on diamond, silicon-carbide, silicon, and germanium between 120 and 1000 K. In all systems, the interface conductance increases monotonically without stagnating at higher temperatures. For TiN/SiC interfaces, ranges from 330 to 1000 MW/m2-K, with a room temperature conductance of 750 MW/m2-K. The interface conductance for TiN/diamond ranges from 140 to 950 MW/m2-K. Notably, for all four interfacial systems, the conductance continues to increase with temperature even after all phonon modes in the vibrationally soft material are thermally excited. This observation suggests that inelastic processes are significant contributors to the thermal conductance in all four interfacial systems, regardless of whether the materials forming the interface are vibrationally similar or dissimilar. Our study fills a notable gap in the literature for how interfacial conductance evolves at high temperatures and tests burgeoning theories for the role of inelastic processes in interfacial thermal transport.This work was supported as part of ULTRA, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0021230
Isolation and Characterization of Agarolytic Bacteria from Marine Environment
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
ASSOCIATION OF INFLAMMATORY MARKERS IN COVID 19 PATIENTS
No full textObjective: we aimed to provide overview of association of inflammatory markers with severity of Covid 19.
Methods: 100 patients admitted in Shri Mahant Indresh Hospital Covid Ward with positive RT PCR. Serum samples taken and run on VITROS 5600 and reported for CRP, FERRITIN, LDH , Procalcitonin,D-dimer & TLC.
Results: with 100 patients 34 were females & rest 66 were males. Out of which all parameters run on all patients. Mean age for males 48.86±15.29 & Mean age for females 43.11±16.21. In all 6 parameters only 3 parameters CRP,LDH,Ferritin had significance in the study with p value <.01. Whereas rest 3 parameters TLC, D-dimer & Procalcitonin had non significant value. D-Dimer had p value 0.483. Procalcitonin p value 0.23. TLC p value 0.08. therefore these parameters in my study was not significant inflammatory markers in patients of Covid 19
The role of consumer multiple identities in bank choice in Pakistan.
Get PDFIdentity via consumption has received much attention in academic research, however fewer studies are found on the role of multiple identities in consumption. This gap becomes wider when it comes to financial services consumption (banking in particular). Further, components of these multiple identities (personal, role and group) are yet to be explored in relation to consumer choice. Therefore, this study aims to contribute to the theory of multiple identities by classifying and defining the components of each consumer multiple identities and exploring the role each of these identities play in consumers’ bank choice. The choice motivation between Islamic and Non-Islamic banks is explored in this regard, where Islamic banks provide the same services as Non-Islamic banks but with an exception of paying/earning any interest. Previous studies have found culture and religion to play a strong role in the formation of multiple identities, thus the author will also investigate the influence of culture (role of family) and religion (religious beliefs, commitment and affiliation) on consumers’ multiple identities and hence on their bank choice. Pakistan is chosen as the context of this study because 1) the presence of Islamic and Non-Islamic banks; 2) Pakistan is a country which was found in the name of religion and thus there is strong presence of religious values in the country; and 3) Pakistan is considered to be an under researched country in the area of consumption, which made it the best suited context for this study. Adopting a qualitative approach, the author conducted 39 semi-structured interviews with Pakistani bank consumers, and the data was analysed thematically using NVIVO 10. Data analyses revealed four key findings. First, religious identity, role of being son/daughter and career identity were the salient consumer identities in relation to bank choice. Second, while defining the components of these multiple identities, the author found that; religious identity was comprised of religious beliefs, role of religion and spirituality. Parents’ happiness, importance of parents and father vs mother made up the role identity of being son/daughter. Whereas moving out, ambitious; future oriented, and making parents proud were grouped under career identity. Third, the role identity of son/daughter was considered to be the most relevant in terms of the consumption of the services of Islamic banks. Fourth, the overlapping nature of cultural and religious influences gave rise to identity conflict in participants’ lives. The author therefore found two types of identity conflict in relation to participants’ bank choice: inter and intra identity conflict. This study contributes to the theory of multiple identities, consumption and financial services literature. First, by investigating different level of identities enacted by consumers via their consumption behaviour. Second, by identifying components of each of these multiple identities. Third, the author discovered a conflict among and between multiple identities, labelled inter and intra identity conflict for the purpose of this study. The fourth contribution to the theory of multiple identities is on what made some identities salient over the others. Similarly, this study also contributes to the existing debate of the precedence of religion over culture and vice versa in the consumption research. Finally, this is one of the first studies to explore the topic of multiple identities in the context of financial services, hence contributing to the consumption literature of banking choice. This study has implications for the banking sector in Pakistan. Islamic banks should design their communication strategies using sound Islamic tangible cues to improve the congruence between their banks and consumers. This will also help to address consumers’ identity conflict. Future research can further explore the identities of Islamic banks and its alignment with consumer identities utilising big sample data
The twin cell model and its excellence in determining the glass transition temperature of thin film metallic glass
No full textImpact of Changes in Reserve Requirement on Banks Profitability: A Case of Commercial Banks in Pakistan
No full textThis study examines the relationship between Reserve Requirement Ratio and Banks Profitability in Pakistan. It emphasizes on the effect of changes in CRR on commercial banking profitability and how it affects the ROE and ROA. The data collected for the research was secondary and quantitative time series data for the ten year period 2005-2014. Using correlation analysis followed by Linear Regression carries the empirical analysis of the study. The finding of study reveal that CRR taken as measure for Reserve Requirement has significant inverse relationship on banks’ financial performance, which is measured by ROA and ROE
Evaluation of Various Agro-Morphological and Genetic Parameters of Single Cross Doubled Haploid Maize Hybrids
Get PDFMaize (Zea mays L.) is among the most important crops in the world for its nutritional value and productivity. Skyrocketing populations demand more food to consume without expansion in agricultural land which can be achieved by utilizing hybrid vigor. A field trial during 2018 was conducted at the University of Agriculture Faisalabad to screen out the best single cross doubled haploid hybrids of maize using eleven doubled haploid single cross hybrids. A randomized complete block design was used to conduct the experiment with three replications under normal environmental conditions. Data for different growth, yield, and agro-morphological parameters were analyzed at a 5% probability of the HSD test. Significant differences were present among the doubled haploid maize hybrids for all the studied agro-morphological parameters. Grain’s yield showed the highest positive and significant genotypic correlation with plant height (r = 0.784) followed by number of leaves per plant (r = 0.715). Grains yield also showed the highest positive and significant phenotypic correlation with plant height (r = 0.469) followed by total biomass (r = 0.431). Number of grain rows per cob (r = 2.662) exhibited the highest positive direct effect on grain yield per plant followed by total biomass (r = 1.993) and 100 grains weight (r = 1.194). Among the hybrids understudy, DH-8XDH-6 showed the best performance in Plant height (196.67 cm), Leaves per plant (14), total biomass per plant (440.91 g), cob length (18.169 cm), 1000 grain weight (40.47 g) and grain yield per plant (274.92 g), thus is recommended for further production and research. © 2022 by the authors. Licensee ResearchersLinks Ltd, England, UK. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)
A pedagogy for success: two stories from STEM
Get PDFDisclosure statement: No potential conflict of interest was reported by the author(s). All data supporting this study are provided in the ‘two cases, two STEM stories’ section of this paper.Copyright © 2023 The Author(s). This paper aims to debate the need to change our discussions from the pedagogy of success to pedagogy for success. In justifying the prepositional shift, we discussed our understanding of success and pedagogy using some relevant literature, followed by the five key features which formulate our pedagogy for success. These features are the web of relations with people, learning objectives established subjectively (or not), the flow from knowledge patterns and streams, the experiential texture and the self and/or situationally ascribed evaluative tone. Each of the five features exhibits no set recipe of particular proportions that a teacher, student or professional can use to become successful in STEM or a toolkit that has certain STEM-based specific skills, abilities and knowledge leading to a successful STEM life. Instead, the pedagogy for success challenges the set criteria of success, by highlighting the ideology of personalised non-hierarchal successes from a variety of sources and spaces. Practically, using the five-featured theoretical framework, we have showcased the STEM stories of Amna and Samreen from our 2021 qualitative, entre-deux, autobioracy-styled data collection. Finally, discussing pedagogy for success using five crosscutting themes that exhibit a non-linear and long-lasting acquisition of a successful STEM life
Work and Family Conflicts, Its Relationship with Employees' Well -Being: How Supervisor's Emotional Support moderates this relationship
No full textThis study tends to enlarge volume of quality work available on work family conflict. It also examines the link between work family conflict with employees’ well-being and moderating role of supervisory emotional support. By studying the moderating effect of supervisory emotional support on work family conflict causes to increase the worth of current study as these relations are rarely studied by the researchers. In order to conduct the study data has been gathered from 150 employees of service providing industries located in Skardu, Pakistan like banks, schools, colleges, offices through convenience sampling. The participants were asked to complete a questionnaire which included sets of questions about each variable. The author used three steps hierarchical regression and correlation for the purpose of data analysis. Three step hierarchical regression analyses indicated that employees experiencing work family conflict reported to affect their well-being negatively. As predicted Supervisory emotional support acts as moderator. Contrary to expectation supervisory emotional support failed to show its direct impact on employees’ well-being. This study will definitely provide assistance for managers and HR professionals along with all other types of managers to understand the importance of well-being of employees and give direction for management to focus on providing supervisory emotional support to them so that the organization will be able to have more satisfied employees.
Keywords: Work family conflict, Supervisor’s emotional support, and employees’ well-being.This article has been published at www.ijarbas.com, Issue: 4, Vol.#2, April, 2020
