3D visualization of additive occlusion and tunable full-spectrum fluorescence in calcite

From biomineralization to synthesis, organic additives provide an effective means of controlling crystallization processes. There is growing evidence that these additives are often occluded within the crystal lattice. This promises an elegant means of creating nanocomposites and tuning physical properties. Here we use the incorporation of sulfonated fluorescent dyes to gain new understanding of additive occlusion in calcite (CaCO3), and to link morphological changes to occlusion mechanisms. We demonstrate that these additives are incorporated within specific zones, as defined by the growth conditions, and show how occlusion can govern changes in crystal shape. Fluorescence spectroscopy and lifetime imaging microscopy also show that the dyes experience unique local environments within different zones. Our strategy is then extended to simultaneously incorporate mixtures of dyes, whose fluorescence cascade creates calcite nanoparticles that fluoresce white. This offers a simple strategy for generating biocompatible and stable fluorescent nanoparticles whose output can be tuned as required

A Cross Sectional Study on the Gap in Doctor – Patient Communication in a Tertiary Care Hospital

Introduction: Effective doctor – patient communication is a central clinical function and the resultant rapport is the heart and art of medicine and a central component in the delivery of health care. This communication is essential in achieving the desired outcomes of treatment. A doctor’s communication and interpretational skills encompass the ability to gather information in order to facilitate accurate diagnosis, counsel appropriately, give therapeutic instructions and establish caring relationship with the patients. Methodology: The study population was the people who consulted their doctors in the hospital for any illness of their own or their children. Informed consent was taken from the patients interviewed. Data was collected from a total of 448 patients who came for a consultation to the hospital.Results: The results of our study agrees with other studies that many patients are not satisfied with the consultation and that doctors fail many a time in adequately educating the patients and providing them better compliance. Nearly 25 percent of the patients complain that they are not satisfied with their consultation and couldn’t build compliance with their doctors. Conclusion: The study concludes that many crevices in doctor – patient communication are left un-filled, making most of the patients not satisfied after their consultation with doctors

Optimization and control of solar-wind islanded hybrid microgrid by using heuristic and deterministic optimization algorithms and fuzzy logic controller

The increasing interest in renewable energy-based power systems globally is driven by their abundance and environmentally friendly attributes. Islanded hybrid microgrid systems (IHMS) are a relatively new development in this field and involve the integration of two or more sustainable sources, such as wind turbines, solar photovoltaic (PV) systems, and other forms of renewable energy such as the ocean, wave, and geothermal energy. In order to ensure an uninterrupted power supply for the growing community and industrial sector of Perhentian Island, Malaysia, alternative power sources must be properly synchronized and managed through an energy management system. To this end, the main contribution of this study is the comprehensive analysis of various optimization methods in terms of net present cost (NPC) and convergence rate. The results of the analysis indicate that HOMER proved to be relatively faster in terms of convergence rate, with the NPC recorded as 387,185$and the Levelized Cost of Energy (LCOE) recorded as 0.64$/kWh, which are the least among the other techniques evaluated. The hybrid energy system was designed to acquire the optimal quantity and size of power-generating modules, including PV systems, wind turbines, batteries, and diesel generators, while also meeting the load requirements. The optimization problem incorporated the LCOE and NPC into the cost function. Various optimization techniques were developed and tested. In addition, an advanced control method, which includes the use of Proportional–integral–derivative (PID) control and Fuzzy Logic Controller (FLC) with automated tuning, was applied to manage voltage and frequency. The control strategy was implemented in MATLAB Simulink, along with a full model of the islanded hybrid microgrid system. The simulation results demonstrate the effectiveness of the proposed FLC in maintaining the voltage and frequency within the acceptable range during various operating conditions. In conclusion, this manuscript provides a comprehensive study on the optimization and control of a solar-wind islanded hybrid microgrid. The proposed approach can be used as a valuable tool for the design and operation of solar-wind islanded hybrid microgrids in remote and islanded communities

Corrigendum to “Optimization and control of solar-wind islanded hybrid microgrid by using heuristic and deterministic optimization algorithms and fuzzy logic controller” [Energy Rep. 10 (2023) 3272–3288]

The authors regret “Ramakrishna NSS – new affiliation. Department of Electrical and Electronics Engineering NMAM Institute of Technology, Nitte, Karkala, Karnataka 574110, India”. The authors would like to apologise for any inconvenience caused

Corrigendum to “Optimization and control of solar-wind islanded hybrid microgrid by using heuristic and deterministic optimization algorithms and fuzzy logic controller” [Energy Rep. 10 (2023) 3272–3288]

The authors regret “Ramakrishna NSS – new affiliation. Department of Electrical and Electronics Engineering NMAM Institute of Technology, Nitte, Karkala, Karnataka-574110, India”. The authors would like to apologise for any inconvenience caused