Advanced Journal of Graduate Research
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Solution Methods for Nonlinear Ordinary Differential Equations Using Lie Symmetry Groups
Get PDFFor formulating mathematical models, engineering problems and physical problems, Nonlinear ordinary differential equations(NODEs) are used widely. Nevertheless, explicit solutions can be obtained for very few NODEs, due to lack of techniques to obtain explicit solutions. Therefore methods to obtain approximate solution for NODEs are used widely. Although symmetry groups of ordinary differential equations (ODEs) can be used to obtain exact solutions however, these techniques are not widely used. The purpose of this paper is to present applications of Lie symmetry groups to obtain exact solutions of NODEs . In this paper we connect different methods,theorems and definitions of Lie symmetry groups from different references and we solve first order and second order NODEs. In this analysis three different methods are used to obtain exact solutions of NODEs. Using applications of these symmetry methods, drawbacks and advantages of these different symmetry methods are discussed and some examples have been illustrated graphically. Focus is first placed on discussing about the notion of symmetry groups of the ODEs. Focus is then changed to apply them to find general solutions for NODEs under three different methods. First we find suitable change of variables that convert given first order NODE into variable separable form using these symmetry groups. As another method to find general solutions for first order NODEs, we find particular type of solution curves called invariant solution curves under Lie symmetry groups and we use these invariant solution curves to obtain the general solutions. We find general solutions for the second order NODEs by reducing their order to first order using Lie symmetry groups
Therapeutic Application of Honey Against Ige-Mediated Type 1 Hypersensitivity Reactions: A Systematic Review
Get PDFIn contemporary times, the use of traditional remedies is still evident. One of the primary items foremost emphasized today is honey. Aside from its natural sweetener capacity, modern science highlights its potential therapeutic capabilities, including anti-inflammatory and immunoregulatory properties in different Type I Hypersensitivity conditions. This systematic review analyzed nine credible experimental studies to objectify different types of honey and its application and effect in different Type I Hypersensitivity clinical manifestations. The abundance of evidence granting IgE mediated disorders which includes Allergic Asthma, Vernal Keratoconjunctivitis, Allergic Fungal Rhinosinusitis, Allergic Rhinitis, and Atopic Dermatitis in both preclinical and clinical analysis revealed honey to be a contributing factor in suppressing different clinical manifestations of the associated conditions. The systematic review can evaluate and categorize the potential therapeutic capabilities of honey in different IgE-mediated Type I Hypersensitivity Reactions, thus, enabling a comprehended integration towards assisting the application within the clinical setting
Evaluation of Power Performance of Solar Module Using Two Diode Model with MATLAB Simulation
Get PDFThis paper tries to represent the difference between single diode and two diode photovoltaic models in terms of efficiency simulated by MATLAB. The research activities done earlier had shown a clear preview that the solar cell can act as concentrated solar cell for increasing the conversion efficiency to a great extant so that output power can be improved to a large scale. Here for showing the manner of concentrated solar action double diode model has been calculated for observing the power difference in comparison with the solar cell of single diode as a convenient one. It has been observed that the photovoltaic module with two diode model is observed as highly efficient in comparison with single diode model. And this two diode model can be treated as highly efficient to convert the solar energy in the electric energy. Also, the behavior of power performance is observed practically which is included in this paper. And finally, a comparison has been drawn out to exhibit the verification of power performance for two diode model using MATLAB simulation. The mostly impact factors considered in this paper are solar irradiance and temperature affecting the power output from PV module
Recent Development on the Extraction Process of Plants Essential Oil and its Effect on Chemical Composition: A Review
Get PDFThis study presents a thorough review on different innovative extraction techniques of different plant essential oil derived from its peel, leaves, seeds and shrubs. The review also entails the different pre-treatment processes that affects the quality and recovery of the plant essential oil. Also, discussed the recently developed green extraction method such as Microwave Assisted Hydrodistillation (MAHD), Solvent Free Microwave Extraction (SFME), Ultrasound Assisted Extraction (UAE), Supercritical Fluid Extraction (SFE) and Ohmic Heated Assisted Hydrodistillation (OHAD). The impact of these extraction process on the important chemical composition of essential oil is further analyzed in this review. The important parameters in extraction is also studied such as the water to material ratio, extraction temperature, power input and extraction time. Based on the different articles reviewed, it signifies that the innovative extraction method improves the quality and quantity of the essential oil yield. It also improved the number of component that can be extracted in the plant essential oil and its biological activities such as antioxidant and antimicrobial activities. Thus this review aims to emphasize the potential of the newly developed essential oil extraction techniques that would help to boon the pharmaceuticals, food and agriculture industry
Utilization of SGLT-2 Inhibitors in Congestive Heart Failure Management
Get PDFCongestive heart failure (CHF) is a progressive condition where the heart cannot pump blood well enough to keep up with volume demand, which results in decreased oxygen perfusion throughout the periphery and vital body organs. This condition affects over six million Americans and is projected to increase by over 46% by the year 2030. By incorporating evidence from research conducted over the past ten years, several studies demonstrate the benefits of sodium-glucose co-transporter (SGLT-2) inhibitors in managing CHF patients. The glucose-lowering medication works to relieve fluid overload by excreting excess glucose and sodium while also increasing vasodilation and reducing cardiac preload. SGLT-2 inhibitors also have an anti-inflammatory effect that decreases epicardial adipose deposition, which relieves oxidative stress on the heart. In addition to the mainstay of medical management for CHF patients, SGLT-2 inhibitors have reduced exacerbations that are often life-threatening and improved overall quality of life by reducing morbidity and mortality
Effect of Gamma-Irradiated Ceramic Wastewater Sludge on Photosynthetic Pigments of Phaseolus Vulgaris L. (Cv. Valentino and Cv. Nebraska) Plants
Get PDFThe common bean plant is a highly polymorphic species, annual herb, erect and bushy, 20–60 cm tall, or twining with stems 2–3 m long, with a taproot and nitrogen nodules which the bacteria could convert nitrogen gas and stores it in the common bean plant roots. Leaves are alternate, green, or purple, trifoliolate, stipulate, petiolate, markedly pulvinus at base; leaflets ovate, entire; acuminate, 6–15 cm long, 3–11 cm wide. Many soils have been contaminated with several pollutants, mostly arising from wastes of human activities such as the use of pesticides, sewer sludge, mining and smelting sources, radioactive substances, and industrial dischargers. These different contaminants can degrade the soil and cause a negative impact on the plant due to disturbing nutrient cycling within ecosystems and subsequently human health. This study aimed to elucidate the mechanism by which the plant may cope with heavy metals stress represented in this study in the form of industrial ceramic wastewater sludge. And, evaluating the role of gamma radiation on ceramic wastewater sludge, could reduce the percentage of the endogenous levels of heavy metals in ceramic sludge. This study investigates the influence of Photosynthetic pigments of the two common bean cultivars Valentino and Nebraska which are grown in light soil clay/sand (1:1) incorporated with ceramic-wastewater sludge (CWWS) non-irradiated (1% and 2%) and gamma-irradiated (2.5 kGy and 10 kGy) for 30 days. The application of non-irradiated CWWS induced an elevation in the contents of chlorophylls a, b, and carotenoids in the two cultivars while a reverse trend was observed in the leaves of both cultivars treated with gamma irradiated CWWS
Determination of Heavy Metals in Root and Shoot of Durum Wheat, Plant Soil: Translocation and Bioaccumulation Factor
Get PDFHeavy metals are uptake by the soil, transfer and accumulate in the various parts of durum wheat plant. The exposure of wheat crops to heavy metals poses threat to their physiological growth and human health through consumption. The study aimed at finding the concentration of heavy metals in durum wheat varieties, transfer and bioaccumulation ability, and effect of organic and conventional farming on heavy metals. The wheat samples (under organic and conventional farming) were randomly sampled at tillering, jointing, and grain filling stage. They were digested with ultra-microwave and analyzed with inductively coupled plasma. The results showed that Zn emerged as the highest concentration in the soil, root, and shoot of all wheat samples and mostly followed by Cr, Cu, Pb, and Cd. With few instances, an order of Cu>Zn>Cd>Cr>Pb>As translocation and accumulation was observed. Statistical study (α .05 and CI of 95%) revealed conventional farming increased heavy metals in the soil. Therefore, organic farming should be adopted to prevent heavy metal contamination of wheat plants and higher food chain
Why is Essential Tremor so Difficult to Treat? A Literature Review
Get PDFEssential tremor (ET) is the most common movement disorder and affects tens of millions of individuals worldwide. It is characterized by isolated upper-limb tremors for at least three years without other neurological signs or tremors in other locations. Despite ET being a widespread movement disorder, its etiology and pathophysiology are poorly understood. This lack of understanding poses significant challenges towards the development of treatments and cures. There is no cure for ET, and current treatments for ET are limited and are often insufficient. ET symptoms can differ greatly between patients, and phenotyping is the only method for diagnosis. ET often overlaps with other disorders including dystonia and Parkinson’s disease, which further complicates diagnosis and treatment. Current treatments begin with pharmacotherapy, and progress to surgical options in drug-resistant patients. There is ongoing research into non-invasive electrical stimulation treatments that may prove to be safe and effective; however, further research is needed. The aim of this review is to assess the literature and summarize why ET is so difficult to treat. We evaluate the efficacy of current treatments, and the potential of future treatments. We summarize four reasons why ET remains so difficult to treat: 1) the unknown etiology and pathophysiology, 2) the lack of a suitable animal model, 3) difficulties with diagnosis, and 4) absence of personalized treatments. Despite the current challenges, ET remains an active area of research and novel experimental treatments may produce safe and effective non-invasive therapeutic options for ET
Awareness of Mobile Phone Radiation and Its Potential Health Hazards Among Students and Working-class Population During the COVID-19 Pandemic: A Cross-sectional Survey
Get PDFCOVID-19 pandemic has caused an increased dependence on mobile phones by students and working professionals. Mobile phones are indispensable gadgets with a wide range of applications. However, there are potential risks associated with its usage in terms of radiofrequency radiation. The objective of this study was to evaluate the knowledge of radiation and its biological adverse effects caused due to the usage of mobile phones among students and working professionals. An online awareness survey was conducted during the COVID-19 pandemic among 351 participants using Google forms. The questionnaire was disseminated to the WhatsApp groups of students and working professionals and the data was statistically analysed. Among the 351 subjects, 72% of the respondents used their mobile phones for more than 4 hours per day. However, less than 20% were fully aware of mobile phone radiation being listed in the possible carcinogen list by the World Health Organization (WHO). In addition, only half of the respondents considered the Specific Absorption Rate (SAR) value and information on radiation emission while purchasing a new phone. To conclude, the need for awareness of potential hazards associated with the mobile phone radiation seems crucial, especially during this time when everyone in the world and especially school and college students are highly dependent on mobile phones
Worldwide Consequences of COVID-19 on Research in STEM
Get PDFA global public health emergency like the Coronavirus Infectious Disease 2019 (COVID-19) pandemic requires accurate and timely data collection in the research community. High-impact research in science, technology, engineering, and mathematics (STEM) has been prioritized in the fight against COVID-19. The present study analyzed the consequences of COVID-19 on STEM research and the collaboration between research institutions and industries worldwide. It was noted that COVID-19 had caused significant delays in non-COVID-19-related research projects and the onset of several remote studies. Most importantly, researchers in the STEM fields directed their attention and expertise to help mitigate virus transmission, treat patients, and implement appropriate public health interventions. Innovations are being integrated in several fields of technological and engineering research to provide optimal patient care and enhance physical distancing measures. Global research platforms are also designed to encourage accelerated research, especially in potential medicinal treatment. Collaboration amongst different disciplines and countries has enabled remarkable progress in the dissemination of scientific knowledge and appropriate responses to address the multifaceted effects of this pandemic on global research in STEM