Quality Of Life and Coping Strategies Among Caregivers of Patient with Cardiovascular Diseases

Caregivers and family members of patients with long-term cardiovascular diseases often experience varying degrees of depression due to the significant changes in life style and the challenges associated with managing the condition. Adapting and modifying coping strategies as needed is crucial for caregivers to effectively decrease or manage stressful situations. The objectives of this study was to assess the quality of life and coping strategies among caregiver of cardiovascular patient. At IMS & SUM Hospital in Bhubaneswar ,Odisha, a descriptive correlational research design was used. Purposive sampling selected 200 participants who completed a socio-demographic questionnaire. Two standardized scale s were employed: the WHOQOL-BREF scale to measure quality of life and the coping inventory for stressful situations to assess coping strategies. The study findings showed a significant negative correlation ( r = -0.338, p < 0.01) between quality of life and coping strategies, as indicated by Karl Pearson’s correlation coefficient. This suggests that as, if the coping strategies is better, the quality of life is also better. Additionally, the study employed ANOVA and t-tests to examine the differences between quality of life and coping strategies. The study findings suggest that the quality of life of young individuals is more impacted by caregiving compared to the elderly. There is a significant negative correlation between quality of life and coping strategies, indicating that higher quality of life scores are associated with lower coping strategy scores. Conversely, better coping strategies are linked to better quality of life. Caregivers employ various coping strategies, and counselling can play a crucial role in providing emotional support, guidance, and practical advice to help caregivers manage challenges and maintain their well-being while caring for cardiovascular patients

Band-gap energy and electronic d-d transitions of NiWO4 studied under high-pressure conditions

We report an extensive study of the optical and structural properties of NiWO₄ combining experiments and density functional theory calculations. We have obtained accurate information on the pressure effect on the crystal structure determining the equation of state and compressibility tensor. We have also determined the pressure dependence of the band gap finding that it decreases under compression because of the contribution of Ni 3d states to the top of the valence band. We report on the sub-band-gap optical spectrum of NiWO4 showing that the five bands observed at 0.95, 1.48, 1.70, 2.40, and 2.70 eV correspond to crystal-field transitions within the 3d⁸ (t₂g⁶ eg²) configuration of Ni²+. Their assignment, which remained controversial until now, has been resolved mainly by their pressure shifts. In addition to the transition energies, their pressure derivatives are different in each band, allowing a clear band assignment. To conclude, we report resistivity and Hall-effect measurements showing that NiWO₄ is a p-type semiconductor with a resistivity that decreases as pressure increases.D.E. acknowledges the financial support from the Generalitat Valenciana under grant nos. PROMETEO CIPROM/2021/075-GREENMAT and MFA/2022/007 and Spanish Ministerio de Ciencia e Innovación and Agencia Estatal de Investigación (MCIN/AEI/10.13039/501100011033) and the European Union under grant nos. PID2019-106383GB-41/42 and RED2018-102612-T (MALTA Consolider-Team network). This study forms part of the Advanced Materials program and is supported by MCIN with funding from European Union Next Generation EU (PRTR-C17.I1) and by the Generalitat Valenciana. F.R. acknowledges financial support from Projects PID2021-127656NB-I00 and MALTA-Consolider Team (RED2018-102612-T) from the State Research Agency of Spain, Ministry of Science and Innovation. The authors J.S. and V.K. would like to acknowledge IIT Hyderabad for computational facility. V.K. would like to acknowledge DST-FIST (SR/FST/PSI-215/2016) for the financial support. J.S. would like to acknowledge CSIR for the fellowship. G.V. would like to acknowledge Institute of Eminence, University of Hyderabad (UoH-IoE-RC3-21-046) for funding and CMSD University of Hyderabad for providing the computational facility. We thank Dr. Velaga Srihari and Smt. Vasanthi for helping with the data acquisition at BL11 beamline at INDUS2

Generalized enthalpy based equation of state for multi-component mixtures

An equation of state using pressure and temperature as independent variables, including non-equilibrium thermal energies of components and explicit accounting of thermal electron effects, is formulated for multi component mixtures. As pressure equilibration is faster in mixtures, this approach is more suited than earlier schemes using Mie-Gruneisen equation of state. Due to the reliance on enthalpy, in lieu of energy, it is directly applicable also to treat porosity effects. The formulation leads to an expression for mixture volume which consists of a term depended on enthalpy differences of components, in addition to those depending on average mixture parameters. A method to estimate non-equilibrium thermal effects, using component Hugoniot to compute non-equilibrium temperatures, is also proposed in this work. Results obtained for two and three component mixtures compare well with experimental Hugoniot data

Comprehensive Understanding of the Kinetics and Mechanism of Fluoride Removal over a Potent Nanocrystalline Hydroxyapatite Surface

Hydroxyapatite (HAp) was successfully synthesized from egg shells, a low cost and easily available biodegradable waste, by the precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy, Fourier transform infrared, and Brunauer–Emmett–Teller (BET) surface area analysis. The surface area of HAp was found to be 144 m²/g with a crystalline size of 9–99 nm from the BET and XRD data. The maximum fluoride removal efficiency within 1 h using 0.3 g of the synthesized adsorbent at pH 6 was 95%. The adsorption of fluoride followed second-order kinetics, indicating that chemisorptions are the rate-limiting step. The experimental data were well fitted with Langmuir and Freundlich isotherms, validating both monolayer and multilayer sorption during the fluoride adsorption onto the porous HAp. The positive adsorption of F^– ions at the HAp interface can be attributed to ion exchange/ion pairing and H-bonding below the pH_pzc of HAp (pH_pzc = 8), and the negative adsorption can be attributed to the electrostatic repulsion between O^– and F^– ions at alkaline pH. Both physical and chemical adsorption phenomena were also evidenced from the molecular parking area data. The results of a batch experiment show that the HAp synthesized from egg shells can be used as an effective, low-cost adsorbent for fluoride removal from a contaminated aqueous solution as well as groundwater compared to other adsorbents