Distributed Generators (DGs) are incorporated in the power distribution systems to develop green energies in microgrids. Islanding is a challenging task in a microgrid. Different types of islanding methods, e.g. local and remote methods, have been developed for handling this task, with local methods being easier to implement, while remote methods are communication-based and costly. The local methods are classified as passive, active, and hybrid, out of which the passive methods are more simple and economical. In this paper, a passive islanding detection method is proposed to detect single line to ground fault. This fault is considered to represent the 60 to 70% of the total un-intentional faults of this category. The available passive methods cannot detect islanding at lower power mismatches as the variations in voltage and frequency fall within thresholding values. In this method, the voltage signals are first retrieved at the targeted DG output and then the phase angle is estimated. Finally, the phase angle is differentiated to get Rate Of Change Of Voltage Phase Angle (ROCOVPA) to detect islanding, and then it is compared with the Rate Of Change Of Frequency (ROCOF) at zero percent power mismatch. Simulation results depict that the ROCOVPA is more effective than ROCOF. The proposed method not only reduces detection time and NonDetection Zone (NDZ) but is also stable during non-islanding cases like load connection and disconnection to avoid nuisance tripping.
Heavy metals and trace elements such as lead (Pb), mercury (Hg), cadmium (Cd), arsenic (Ar), nickel (Ni), Chromium (Cr), cobalt (Co), copper (Cu), mercury (Mg), iron (Fe) and aluminum (Al) are detected in various types of herbal cosmetics. Heavy metals and elements can accumulate at high concentrations causing serious risks to human health when consumed. In this study, the levels of potential heavy metals of Pb, Ar, Cd, and Ni were quantitatively determined using atomic absorption spectroscopy. Samples of Henna leaves, Henna paste, Khol stones and baby Talcum powder were collected randomly from different public markets of Tripoli city. The results were evaluated by using different international guidelines, US-FDA, EU regulation, German (BVL), World Health Organization (WHO) and Canadian Guidelines. Because of controversial global guidelines, the study urgent the ultimate need for setting up harmonized minimum levels of heavy metals in cosmetics that could be applicable worldwide. Generally, the presence of a higher concentration of some of the studied heavy metals was observed, and the effect of these heavy metals at higher levels will be more harmful to consumer health after prolonged usage. In conclusion, nationally, the need for developing and updating the national specification for cosmetics by the Libyan National Centre for Standardization and Metrology (LNCSM) to protect consumers from more catastrophic cosmetic hazards is urgently required.
Mediterranean journal of pharmacy and pharmaceutical sciences
Learning styles describe how individuals acquire, interpret, and assimilate knowledge differently. The effective use of learning styles is essential for effective classroom education. The three most popular learning styles are kinaesthetic, auditory, and visual. This study pursued to learn more about the preferred learning modes of college students. There were 152 respondents from Baneshwor Multiple Campus, Kathmandu Nepal. The data were collected from first year students of BBS, B.Ed. and BA. The researchers used a scale of learning styles (VAK) with 28 items to accomplish the study's goal, and after confirming its validity and reliability, it was applied to the sample. The results show that there are no statistically significant differences in the types of learning patterns preferred by students. Based on these findings, the study recommends that teachers are encouraged to diversify college teaching strategies and methods to suit the preferred learning styles of their students, particularly new students, in order to motivate them to learn in the college environment and to provide the training needs and requirements necessary to enable them to take individual differences among their students into account when identifying educational goals.
Avec une très grande intelligence narrative, Leila SLIMANI (2016) déforme les codes du polar et commence par la fin. « Le bébé est mort » la première ligne avec laquelle s’ouvre la scène du meurtre des enfants par la nourrice au visage d’ange. La finesse du détail pertinent et la construction par petites touches des personnages terriblement crédibles caractérisent la plume de Leila SLIMANI. Débarrasser de l’horreur, le lecteur se met à la recherche des failles de cette étrangère de la famille. Rien n’est en trop : dialogues, descriptions, narration haletante et histoire émouvante, ce sont les atouts de la récompense de cette œuvre par le prestigieux prix Goncourt. Inspirer par un fait divers affreux, la romancière livre une photographie d’un ordre social illégal et les forces invisibles qui couvent les relations dans notre société. Leila SLIMANI met en relief une intrigue aux conséquences dramatiques, les contraintes d’une modernité qui s’imposent, infectant la maternité des femmes assoiffées de liberté.
The current study seeks to develop and validate a high-performance liquid chromatography method for atorvastatin diastereomer separation and analysis. In particular, we wish to identify the many diastereomers in atorvastatin, which can help us to better understand their pharmacological properties and provide significant information for pharmaceutical applications. Atorvastatin was chromatographed on a Chiralcel® OD-RH column and n-hexan-2-propanol (95:05 v/v) as the mobile phase, with an injection volume of 10 µL. The solution was pumped at a continuous flow rate of 1 mL/min, with a detection wavelength of 260 nm. The investigation found two peaks with retention times of 3.23 and 3.85 min, respectively. The resolution, capacity, and selectivity factors obtained were Rs = 1.2, k′1 = 3.50, k′2 = 4.37, and α = 1.24.
Mediterranean journal of pharmacy and pharmaceutical sciences
Cerebrospinal fluid (CSF) is critical in maintaining brain interstitial fluid balance and providing hydromechanical protection. Lumbar puncture (LP) is a common invasive procedure for obtaining CSF samples to evaluate central nervous system infections and cancers and measure intracranial pressure. While LP is generally considered safe, it is associated with both minor and major complications. Post-LP meningitis occurs in approximately 50% of spinal anesthesia cases and 9% of diagnostic LPs. Additionally, over 70% of diagnostic LPs result in minor bleeding, which can lead to serious outcomes such as spinal epidural hematoma, nerve damage, or paralysis. Significant consequences of LP include headaches and hearing loss; however, other rare complications, such as cerebral herniation and CSF leak syndrome, must be considered carefully. This review synthesizes findings from multiple studies published in PubMed, Google Scholar, and Scopus, highlighting the need for further research on the complications and interventions related to this commonly performed procedure.
This is a study on the growth of public relations in Malaysia based on the advertisements placed in the newspapers during the colonial period. Tracing the historical development serves to make a better understanding about the nature of public relations practice. This paper therefore aims at exploring the development of the public relations profession by studying the advertisements placed in the nationwide newspapers, the Straits Times and the Singapore Free Press & Mercantile Advertiser from 1939 which included the early advertisement that contained the phrase “public relations” to 1956 a year before the independence of the Federation of Malaysia. An analysis of the advertisements was made to fully understand the historical development of public relations in Malaya or then Malaysia. The very first advertisement that was identified was on 31 January 1948, which was placed by the Department of Public Relations of the federal government. The British colonial government had placed another four advertisements in 1949 and 1950. A British mining Co. was the first corporation to hire an information & public relations officer in 1956. The results showed some differences and similarities through the analyses of advertisements in the job specification, which included qualification, duties, and salaries. The results revealed that those who had higher education and experience obtained a higher salary. The results also showed that some advertisers companies/ organizations had substituted academic qualifications for working experience) when advertising for their public relations personnel.
This is a non-inclusive collection of my published articles.
A major hallmark of Parkinson's disease is loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc). The pathophysiological mechanisms causing this relatively selective neurodegeneration are poorly understood, and thus experimental systems allowing to study dopaminergic neuron dysfunction are needed. Induced pluripotent stem cells (iPSCs) differentiated toward a dopaminergic neuronal phenotype offer a valuable source to generate human dopaminergic neurons. However, currently available protocols result in a highly variable yield of dopaminergic neurons depending on the source of hiPSCs. We have now developed a protocol based on HBA promoter-driven transient expression of transcription factors by means of adeno-associated viral (AAV) vectors, that allowed to generate very consistent numbers of dopaminergic neurons from four different human iPSC lines. We also demonstrate that AAV vectors expressing reporter genes from a neuron-specific hSyn1 promoter can serve as surrogate markers for maturation of hiPSC-derived dopaminergic neurons. Dopaminergic neurons differentiated by transcription factor expression showed aggravated neurodegeneration through α-synuclein overexpression, but were not sensitive to γ-synuclein overexpression, suggesting that these neurons are well suited to study neurodegeneration in the context of Parkinson’s disease.
This study examined work-life integration and female lecturers’ tasks performance in government-owned higher educational institutions in Imo state. The correlational research design was adopted for the study. Two research questions were answered while two hypotheses were tested. The population of the study comprised 1292 female lecturers in government-owned higher educational institutions in Imo State. The sample size of the study was determined using Taro Yamane formula. Proportionate stratified random sampling technique was used to draw 406 respondents from the strata. Two sets of instruments titled; Female Lecturers’ Work-Life Integration Questionnaire (FLWLIQ) and Female Lecturers’ Task Performance Questionnaire (FLTPQ) were used for data collection. Face and content validities were ensured by experts including the researcher’s supervisor. The reliability coefficient of the FLWLIQ and FLTPQ was calculated to be 0.97 and 0.95 with the help of Cronbach Alpha. Multiple and simple regressions were used to answer the research questions. ANOVA associated with multiple regression and t-test associated with simple regression were used to test the null hypotheses at 0.05 alpha level. It was found that self-management skills and effective communication system predict female lecturers’ tasks performance by 54% in government-owned higher educational institutions in Imo state. Based on the findings, it was concluded that work-life integration is positively and moderately significant to female lecturers’ tasks performance in higher educational institutions in Imo state. It was therefore recommended among others that; management of tertiary institutions in Imo state should consider the establishment of constructive outlets for female lecturers to vent any form of inconveniences that is inimical to their job functioning so as to reduce tension. Also, management in each of the institutions should communicate staff duties in an effective manner by setting up active communication channels in each faculty.
Corona virus pandemic has swept a major section of the world population. In terms of infectivity it�s higher than any pandemic in the recent past. Corona virus, a member of the family Coronaviridae, spread from bat to human through an intermediate host pangolin. It has lower mortality rate than the previous pandemics in last 100 years such as Spanish Flu(1918-20),Asian Flu (1957-58), SARS Corona virus (SARS-Cov) (2003), H1N1 Swine Flu Pandemic(2009-10), Middle East Respiratory Syndrome (MERS) (2012), West African Ebola (2014-16) etc. Research shows Covid spike attaches ACE2 receptor; it leads to a release of cytokine into the blood capillaries near the alveoli and may ultimately turn into pneumonia. The alveoli get collapsed leading ARDF. The pulmonary inflammation proceeds to systemic inflammation that causes multiple organ failure. Drug like Chloroquine, Lopinavir/ritonavir, and Remdesivir may halt the spread of the virus in the body. Antipyretic is prescribed to reduce the temperature. This article comprises of detail mechanism of the dreadful disease along with its diagnosis and proposed treatment. This exploratory study mainly designed to generate awareness and provide information to the individuals who want to know the A to Z of Covid in nutshell. This article may create a pathway to number of upcoming scientific researches and may attract them to work on this field to enhance the probability of inventing appropriate vaccine and medicine to fight against this contagious disease and to win the battle against this Global Pandemic.
This paper attempts to review the status of law in the context of the UK. The critical areas reviewed in the study included the nature of the legal systems within the UK, focusing on the role played by law within the community and the sources of law. In the second task, the connection between law and the business world is established, trying to ascertain the role of company law, employment laws, the law of contract, and the intellectual property to the businesses. Task three assessed the existing laws regarding the different types of business organizations created in the country, concentrating on the legal requirements for establishing the same. The last task focused on the recommendation that the study makes in conclusion regarding the dispute resolution processes available in the current business world.
Three species of arbuscular mycorrhizal fungi (Glomus fasiculatum, Glomus mossae and Acaulispora laevis) were used as bio-agents to manage black bundle disease of maize caused by C.acremonium. The results revealed that colonization of arbuscular mycorrhizal fungi in root system of the host reduce the percentage of disease incidenceconsiderably.In the pots inoculated with G. fasiculatum no disease incidence (0.0%) was recorded whereas, in the pots inoculated with A. leavis and G. mossae 16.66 % of disease incidence was recorded and the pots treated with pathogen shows 66.66% of disease incidence compare to control. Among the three bio-agents, Glomus fasiculatumproved to be more effective in managing the disease followed by G.mossae and A. laevis. In addition, all the three AM fungi enhanced the plant growth when they are used alone as inoculum as compared to dual inoculation with the C. acremonium and overall control. This clearly suggests that, AM fungi if used, can serve dual purpose. It can be used as bio-control agent as it shows negative antagonistic interaction soil borne plant pathogens and used as growth promoter because of the ability to supply macro and micro nutrients to the host plants.
The article is a discourse analysis of the Wildflower telerserye, exploring the themes and portrayals of the main character and the ambiguities projected by her characterization. The research’s objective revolves around the details that upon the attempt of the telersye to flaunt the modern archetypes of a Filipina, a strong and empowered woman who liberates under the yoke of patriarchal hegemony, her actions and ways were deemed crucial and subjected to great scrutiny. The researcher also dealt with how these portrayals affect and reflect the Filipinos’ way of thinking and sense of morality. Two major literary theories were used to underscore the article’s crucial points. To show how the woman portrayals in teleserye try to subvert the idea and configuration of patriarchy, Feminism (Helene Cixous) was used. Meanwhile, Deconstructionism (Jacques Derrida) was employed to show that in the attempt of the teleserye to empower the woman lead character, remove her from her marginalized and stereotypical views, and liberate her from the yoke of patriarchal hegemony, the result was otherwise. Based on these analyses, a synthesis of Filipinos’ sensibilities on how it affects and reflects their ways of thinking was crafted.
Abstract Abundant solar energy is freely available almost round the year in India. As per the current scenario of global warming and climatic change, solar energy is the cleanest source in nature. Concentrated solar power (CSP)has hardly contributed to the overall installed solar power capacity in the country. CSP technologies are Parabolic Trough Collector (PTC), Linear Fresnel Reflector (LFR), Paraboloid Dish and Solar Power Tower. This paper presents a review of CSP in solar parabolic dish concentrator to understand thermal aspect like thermal efficiency, optical efficiency, useful heat gain, heat losses, solar irradiation, etc. for various applications and current development. The current scenario of global CSP is discussed to meet the future challenges and need of the society.
Environmental monitoring is required to protect our surrounding from contamination, especially bacteria, virus, and parasitic pathogens & their toxins as well as chemical substances that can be released into a air, soil, and water create serious public health concerns. Presently, traditional methods more popular for the detection of pathogens and its toxins, but they have several limitations due to low concentrations and interference with various enzymatic inhibitors in the environmental samples. This chapter describes the current state of modern tools, the advantages over conventional detection methods, and the challenges due to testing of environmental samples. Future trends in the development of novel detection devices and their importance, use over other environmental monitoring methodologies are also discussed.
The genus Caesalpinia belongs to the family Caesalpiniaceae and includes 280 species distributed in tropic and subtropical regions of the world. Historically, species of the genus Caesalpinia have been used to treat a wide range of ailments, such as malaria, ascariasis, dysentery, fever, rheumatism, and influenza. Phytochemical works led to the isolation of triterpenoids, diterpenes, flavonoids, steroids and phenolic compounds. Pharmacological studies have shown that the extracts and compounds isolated from this genus exhibited anticancer, anti-inflammatory, anti-malarial, antipyretic, anti-microbial, anti-rheumatic, antiulcer and anti-diabetic activities. Therefore, this review aims to provide a comprehensive overview of the genus Caesalpinia's ethnopharmacology, phytochemistry and pharmacology.
This paper compares different optimizable machine learning classification models to predict eight types of anemia from complete blood count (CBC) data. For the research, we used a publicly available Kaggle dataset containing 1281 observations, 14 predictors, and the diagnosis as the categorical target variable with nine categories (eight types of anemia and the healthy category). First, we examined the dataset and observed the histograms of some of the predictors. We compared the values of predictors of observations with no anemia to the observations where any anemia was diagnosed. Next, we used MATLAB R2024a to train and test nine optimizable machine-learning classification models. These models were Ensemble, Tree, SVM, Efficient Linear, Neural Network, Kernel, KNN, Naïve Bayes, and the Discriminant. Bayesian optimization was used to optimize the hyperparameters of all these models. We used 90% of observations for training and 10% of observations for testing. During the training, 10-fold cross-validation was used to prevent overfitting. The results showed the best accuracy was reached with the Ensemble classification model using the bag ensemble method (validation accuracy: 99.22%, test accuracy: 100%). Finally, we inspected our best classification model in more detail. We calculated the permutation feature importance to determine the contribution of each predictor to the final model. The results showed 6–7 important predictors, while the most important feature was the amount of hemoglobin.
Higher Education has an important role in the task of rebuilding a nation and it pavCes the way for overall development of a nation. The twentieth century has witnessed several revolutions like Green revolution, White revolution, I.T revolution, so on and so forth, taking human civilization to new heights. At the start of 21st century, we gave a lot of importance given to higher education. Every country realized the value of higher education and the benefits that accrue from it. “The social demands for higher education continue to increase. The inabilities of the state to support this growing demand result in new financing arrangements for higher education. The recent reforms in this area could be broadly divided into two categories: the privatization of public institutions and the establishment of private institutions of higher education. Privatization implies the application of market principles in the operation of public institutions, while ownership rests within the public domain. Promotion of the private sector implies the growth and expansion of the non-state sector in higher education, and very often this sector does not rely on state funding for its growth and expansion. Both of these measures have paved the way for market operations in higher education
The aim of this study was to examine university students’ fear of success from the perspective of positive psychology. Two objectives were addressed: first, analyzing the relation between fear of success, optimism, self-esteem, self-efficacy, and search for meaning in life; second, exploring the variance of the fear of success, taking into account the affective dimension of the self (self-esteem) and search for meaning in life. The results confirmed that fear of success was positively related to search for meaning, and negatively to optimism, self-esteem, and self-efficacy. The variance of the fear of success was explained by the self-esteem and search for meaning in life. Implications for school psychologists were discussed.
Université Nazi Boni
Central Council For Research In Unani Medicine, Ministry Of Ayush, Government Of India, New Delhi