48 research outputs found
Theoretical and experimental revelation of the structural, dielectric, optical and magnetic properties of Sr1−xNixFe8SnO15 (x = 0, 0.2, 0.4, and 0.6) V-type hexagonal ferrites
No full textA novel V-type hexaferrite with the substitution of strontium by divalent nickel, having the chemical formula Sr1−xNixFe8SnO15 (x = 0.0, 0.2, 0.4, and 0.6), is synthesized by employing a sol–gel auto combustion method. X-ray diffraction (XRD) patterns confirmed the hexagonal phase for all the samples; however, an extra peak due to SnO2 was observed. With the increase in the Ni2+ concentration, the values of lattice constants a (Å) and c (Å) and unit cell volume decreased slightly, and the crystallite size was calculated to vary in the range of 19 to 21 nm for all the samples. Transmission electron microscopy (TEM) analysis indicated that the average particle size lies in the range of 70–110 nm for all the samples. The samples have the maximum dielectric constant (ε′) and minimum electrical modulus (M′) at low frequency (<100 Hz); when the frequency is gradually increased, both the parameters stabilized and became constant, with real permittivity values from 61.4 to 37.4 between 1 kHz and 10 MHz, which are high values for hexaferrites. AC conductivity increased exponentially with the increase in frequency, while Ni content had little effect on these values. The polarization versus electric field (P–E) loops showed electrical polarizability but represented a lossy behavior that lessened with increasing Ni2+ content. The optical band gap energy values increased slightly with Ni2+ substitution over the unsubstituted sample. The saturation magnetization (Ms) increased with Ni substitution from 31.1 emu g−1 in the pure V ferrite to a maximum value of 43.6 emu g−1 for x = 0.4, and remanence magnetization (Mr) values were also significant. However, a drastic decrease in coercivity (Hc) was observed with Ni substitution, from a reasonably hard ferrite (Hc = 2218 Oe, 176.5 kA m−1) for x = 0.2 to very soft ferrites with x = 0.4 and 0.6 (Hc of around only 200 Oe, 16 kA m−1, a ten-fold decrease). The small grain size, reasonable Ms, and great variation in Hc with x between hard and soft ferrites while maintaining some Mr signify that these V-type hexaferrites could also be interesting materials for potential spintronic, magnetic memory, and microwave absorption applications
Synergetic effect of Hexaferrite and reduced Graphene oxide (rGO) in Photothermal therapy and Hyperthermia applications
No full textThis research article describes the synthesis of composite materials by combining T-type hexagonal ferrite and reduced Graphene Oxide using the standard ceramic process. The Calcium-based T-type hexagonal ferrite was synthesized by using the sol-gel auto-combustion method while the reduced graphene oxide by adopting the Hummer method. The crystallite size varied in the range of 23.38 -39.16 nm as calculated from the X-ray diffraction (XRD) data. Consequently, the lattice parameters 'a' and 'c' decreased from 5.9 to 5.1 Å and from 29.92 to 28.32 Å, respectively. The use of atomic force microscopy (AFM) revealed a range of particle sizes at the surface, varying from 1.70 nm to 3.85 nm. Moreover, the saturation and remanence magnetization values demonstrated an increasing trend with T-type hexaferrites concentration whereas the coercivity decreased. The UV–vis near-infrared spectra exhibited substantial light absorption, characterized by a wide absorption range in the visible and near-infrared (NIR) region (700–1100 nm) which indicates its use in Photothermal therapy (PTT). The Calcium T- type hexaferrite exhibited clear peaks in the blue, green, violet, and yellow spectra in its photoluminescence (PL) properties. These peaks are believed to be caused by oxygen vacancies and defects. The synthesized samples displayed a lossy behavior in the polarization-electric field (P-E) loop, with saturation polarization levels exceeding remnant polarization, which is an amenable condition for lossy behavior. Most importantly, the synthesized materials had significant thermal responses when exposed to an alternation (AC) magnetic field, indicating their potential use in magnetic hyperthermia applications
Role of manual activities among cerebral Palsy children
No full textObjective: Determine the role of manual activities in children presenting with spastic type of Cerebral Palsy. Methods: AQuasi experimental study was conducted in Children Hospital and Compass. A sample of 30 children with cerebral palsy aged between 6 to 12 years was studied and assessment was made before and after the implementation of treatment through ABILHAND kids Questionnaire. The duration of this study was 6 months from December 2014 to May 2015. The recruiting strategy used was convenience sampling. Intervention was given for a period of 90 hours for 9 weeks. Qualitative variables were expressed as proportions (percentages). Before and after comparisons were made using non.parametric Wilcoxon signed rank test since the data was obtained as scores. A p-value less than 0.05 were taken as significant. Results: Bimanual Therapy had significant effect on manual abilities of a child presenting with spastic type of cerebral palsy. The P value was calculated as 0.000 which was less than 0.05. Conclusion: HABIT appears to be effective in improving the manual ability of spastic cerebral palsy children
Advancing gaming technology in neurological Rehabilitation
No full textThe consumption of gaming technology has recently gain unexpected significance in medical health care for neurological rehabilitation. With increasing interest in exergames study, numerous definitions and terminology have been introduced to describe this term. Researchers from health-related background acknowledged the fact that engaging in video gaming was not always sedentary and might act as a means to ensure more physical work. Simplifying the terminology exergames are those types of gaming technology or multimedia communications that necessitate the player to perform physical activity during play
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
Effect of Lifestyle Modification Through Web-Based Telerehabilitation Monitoring Combined With Supervised Sensorimotor Training After Total Knee Arthroplasty: Randomized Controlled Trial
No full textAbstract
BackgroundTotal knee arthroplasty (TKA) is commonly performed to manage end-stage knee osteoarthritis, yet postsurgical recovery varies significantly among patients. Lifestyle modification and rehabilitation interventions play a critical role in optimizing outcomes. While telerehabilitation has shown promise in enhancing accessibility and compliance, its role in supporting lifestyle behavior change alongside supervised sensorimotor training remains underexplored.
ObjectiveThis study aimed to evaluate the effects of a home-based lifestyle modification program delivered through web-based telerehabilitation monitoring in addition to supervised sensorimotor training, in improving physical function, pain, balance, quality of life (QOL), and adherence in patients undergoing TKA.
MethodsA single-blinded randomized controlled trial was conducted among 52 participants undergoing primary TKA, who were randomly assigned to either the intervention group (IG) (supervised sensorimotor training plus a telerehabilitation-supported lifestyle modification program) or the control group (CG) (supervised sensorimotor training alone and a traditional home exercise plan). The intervention lasted 22 weeks, and participants were assessed at baseline (presurgery), 14 weeks, and 22 weeks postsurgery. Outcome measures included joint position sense (JPS), musculoskeletal ultrasound of the rectus femoris muscle, Berg Balance Scale, knee function using the Knee Injury and Osteoarthritis Outcome Score, and QOL via EuroQol 5-dimension 5-level questionnaire.
ResultsSignificant improvements were observed in the IG across all outcomes compared with the CG. Notably, the IG showed greater improvements in musculoskeletal ultrasound thickness. JPS showed superior accuracy in the experimental group (baseline [3.2 degrees] to 22 wk postsurgery [0.05 degrees]) compared with the CG (baseline [3.1 degrees] to 22 wk postsurgery [1.8 degrees]), with significant improvements noted (PdPdPd
ConclusionsHome-based lifestyle modification program through telerehabilitation monitoring significantly improved functional and patient-reported outcomes in individuals following TKA. These findings support the integration of lifestyle modification programs through telerehabilitation monitoring into post-TKA recovery pathways to optimize rehabilitation outcomes
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
Utilization of Extended International Classification of Functioning Core Set for Stroke Patients
No full textDear Editor,
Today, in the era of quality health care services, physical therapy plays paramount role in reducing sufferings of patients and maximizing their movement potential1. As a physical therapist, one should possess sound clinical decision-making skills, is able to incorporate patient management model and can use latest evidence-based strategies during therapist patient interface, Therefore, a classification system or common terminology is required which is reliable and clinically pragmatic1. International Classification of Function (ICF) model has been endorsed by World health assembly in 2001and by American Physical Therapy Association in 2005 not only as a system of classification but also as a standardized assessment tool but since ICF model is very comprehensive as it contains more than1400 categories. ICF core sets for specific health conditions have been established which are concise practicable catalogue that expresses efficiently different aspects of functioning and dysfunctioning and are currently being used internationally at many platforms2
The role of consumer multiple identities in bank choice in Pakistan.
No full textIdentity 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
