Red deer algorithm-based selective harmonic elimination technique for multilevel inverters

This paper proposed a red deer algorithm (RDA)-based selective harmonic elimination (SHE) method for multilevel inverters (MLIs). To eliminate the desired harmonic orders, the optimum switching angles of the MLI have been calculated using the proposed RDA. The calculated switching angles have been applied to the 3-phase cascaded H-bridged 11-level inverter. In addition, the performance of the proposed RDA method was compared with the results of methods such as the Newton-Raphson (NR) method, LSHADE/EpSin technique (LSHADE), whale optimization algorithm (WOA), and particle swarm optimization (PSO) used for the SHE problem in the literature. The results obtained prove that the proposed RDA optimization solves the SHE problems more effectively than other methods. It has also been observed that RDA produces good solutions in different modulation indexes

The clinical significance of serum oxidative stress biomarkers in breast cancer females

Background: This study was conducted to evaluate the role of some serum oxidative stress biomarkers for breast cancer diagnosis, incidence and monitoring the effects of surgery and chemotherapy. Methods: A total of 35 breast cancer patients (before surgery, after two weeks of surgery and after 6 cy­cles of chemotherapy) and 35 normal healthy controls were analyzed for serum oxidative stress markers including total antioxidant capacity (TAC), malondialdehyde (MDA), total, reduced (GSH) and oxidized (GSSG) glutathione and glutathione redox status (GSH/GSSG). Results: The serum levels of MDA and GSSG were significantly higher in breast cancer patients than controls. The serum levels of GSH, TAC and GSH/GSSG ratio were significantly lower in breast cancer patients than controls. After surgery, the serum levels of MDA and GSSG were significantly decreased, while the serum levels of GSH were significantly increased, compared with their levels before surgery. Six cycles of chemotherapy showed the non-significant effect on the serum levels of the assayed biomarkers. ROC curve analysis demonstrated that MDA and GSH were superior to the GSH/GSSG ratio, TAC and GSSG. Increased levels of MDA and GSSG and reduced levels of GSH, TAC and GSH/GSSG ratio were found to significantly increase the risk of breast cancer. Conclusions: All of the assayed biomarkers can be used for prediction of breast cancer with MDA and GSH being superior to the others. MDA, GSH and GSSG were able to monitor the effect of surgery. All of the assayed biomarkers were found to be associated with breast cancer risk. None of the assayed biomarkers was able to predict the effect of chemotherapy

Photoacoustic detection in the Michelson interferometer cavity

For the first time, we report photoacoustic (PA) signal detection in a cell placed within the Michelson interferometer cavity in an attempt to relate photoacoustic effect to the Michelson fringe shift as a result of changes in the cell. Both detection schemes were investigated using IR absorption and their sensitivities compared. Signals related to Michelson interferometer fringe and PA effect have shown good correlations with each other using different samples including some essential oils and their corresponding plant part from which the essential oil is usually obtained. Results were encouraging and will open the door widely to use the combined Michelson interferometer- photoacoustic spectroscopy (PAS) in trace gas detection for different applications

ptype: probabilistic type inference

Type inference refers to the task of inferring the data type of a given column of data. Current approaches often fail when data contains missing data and anomalies, which are found commonly in real-world data sets. In this paper, we propose ptype, a probabilistic robust type inference method that allows us to detect such entries, and infer data types. We further show that the proposed method outperforms the existing methods

Risk Factors for Maternal Vitamin D Deficiency within the United Arab Emirates

Introduction: Vitamin D deficiency during pregnancy is a public health problem and it has been associated with negative pregnancy outcomes for both mothers and infants. Aim: To estimate the prevalence of vitamin D deficiency in pregnant women in the United Arab Emirates (UAE) and to identify the contribution of risk factors to the 25(OH)D levels. Methods: It is a cross-sectional study in which vitamin D levels of 1088 adult pregnant women were assessed. Information on vitamin D intake was available in a sub-sample of 266 women. Results: The mean serum 25(OH)D was 26.2 nmol/L (95% CI 25.2-27.1 range 5-129.1 nmol/L) with 69% of women being vitamin D deficient (<30 nmol/L). In the bivariate analysis, showed that no predictors could have been indicated as no values exceeded significance (p<0.2). Stepwise multiple linear regression analysis could not be applied to identify predictors of vitamin D levels as no values exceeded p=0.2. Conclusion: Due to the high prevalence of vitamin deficiency in UAE, there is an urge for interventions focusing on supplementation, fortification and diet diversity for preventing health consequences during a critical period of development

Gambaran pengetahuan, sikap, dan tindakan mahasiswa Program Studi Pendidikan Dokter Fakultas Kedokteran Universitas Sam Ratulangi terhadap kesiapsiagaan bencana alam

Natural disasters are frequent events in Indonesia. The occurrence of natural disasters will result in various kinds of damage, losses, and even health problems. Lack of knowledge about disaster preparedness will affect a person's attitude and actions in dealing with disasters. It takes special expertise of medical students who will become a competent doctor in health services during natural disasters. This study aims to determine the description of knowledge, attitudes, and actions of students of the Medical Education Study Program, Faculty of Medicine, Sam Ratulangi University towards natural disaster preparedness. This is a descriptive study with a cross sectional design with a sampling technique using simple random sampling. The research instrument used a questionnaire (Google form). Total respondents who participated in this study were 116 respondents. The results showed that Medical Education students of the Faculty of Medicine, Sam Ratulangi University mostly had high knowledge of disaster preparedness as much as 61.2%, a positive attitude towards disaster preparedness as much as 63.8%, and were able to take action on disaster preparedness as much as 71.6%. From the result of this study, it can be concluded that Medical Education Students of the Faculty of Medicine, Sam Ratulangi University have high levels of knowledge, positive attitudes, and capable actions in natural disaster preparedness. Keywords: Disaster preparedness, knowledge, attitude, practice &nbsp

Investigation of Theileria camelensis in camels infested by Hyalomma dromedarii ticks in Upper Egypt

In the present study, a total of 224 camels infested with Hyalomma dromedarii ticks were investigated for the presence of Theileria camelensis infection in Upper Egypt. The role of Hyalomma dromedarii ticks as the vector of this parasite was also investigated by haemolymph smear examination. Results revealed that 15 (6.75%) of 224 camels were harboring Theileria camelensis in erythrocytes. Furthermore, the theilerial schizont was also seen in lymphocytes. These 15 camels did not show any abnormal clinical signs except three cases that showed enlargement of superficial lymph node and fever. Examination of ticks showed various developmental stages of different shapes and forms of Theileria species

Effect of Arabidopsis extracts on the Status of Liver Histology of Alloxan-induced Diabetic Mice

Arabidopsis is a member of the Brassicaceae family, which includes important crops. It has no agronomic significance, but offers important advantages for basic research in genetics and molecular biology . Insulin-like growth factor 1 (IGF-1), known as “somatomedin C”,” found in Arabidopsis thaliana seeds. Anti-diabetic medical plants are general known to exert their beneficial effects on diabetes via various modes and mechanism depending on the phytochemicals and bioactive agents endowed in such plants. In this study the Arabidopsis thaliana ethanolic seed extract has hyperglycemic. In conclusion, the present results showed that Arabidopsis consumption reversed most of the histological changes in the diabetic mice. This effect was due to the hypoglycemic effect of the Arabidopsis and improving the insulin resistance. In addition, in diabetes there was an increase in the oxidative stress which was significantly reduced by Arabidopsis consumption owing to its antioxidant effect. Key words: Arabidopsis thaliana, Brassicaceae family, ethanolic seed extract, Insulin-like, hyperglycemic

Lung Transplantation in a Patient with COVID-19-Associated Acute Respiratory Failure

Coronavirus disease 2019 (COVID-19) is currently a significant cause of acute respiratory failure worldwide, leading to irreversible fibrotic lung disease. In patients with persistent respiratory failure after acute COVID-19 infection, lung transplant is an emerging option. Here, we have presented a case where the patient required venovenous extracorporeal membrane oxygenation (VV-ECMO) support for 33 days until a bilateral lung transplant was performed on day 71 after the initial COVID-19 infection. The early outcomes have been favorable. Currently, no guidelines exist for an acceptable time period after initial COVID-19 infection, duration of negative COVID polymerase chain reaction (PCR) testing, or negative Vero cell culture in the setting of persistent positive COVID PCR testing before listing for a lung transplant. Due to a lack of standardized guidelines, this patient was not listed for a lung transplant until the COVID-19 PCRs came negative on days 47 and 49 after the infection