Design and Development of an Automated Multi Axis Solar Tracker Using PLC

Design of a two dimensional automated solar tracking system is discussed in this paper. The objectives of the proposed work are to design an automated tracking technique using Light Dependent Resistance (LDR), and solar panel power output to position the solar panel to absorb maximum energy. For positioning the solar panel two stepper motors are used, each for positioning in a plane. These stepper motors were driven by a Programmable Logic Controller (PLC).  The controller is designed using wonderware software considering the inputs from LDR Sensor and solar panel output to drive the stepper motor connected to solar panels. Then the whole program is implemented with the help of PLC. The system was tested on a real time and results showed the proposed technique had improved the efficiency of solar panel by an amount of 25%

Design and Development of an Automated Multi Axis Solar Tracker Using PLC

Design of a two dimensional automated solar tracking system is discussed in this paper. The objectives of the proposed work are to design an automated tracking technique using Light Dependent Resistance (LDR), and solar panel power output to position the solar panel to absorb maximum energy. For positioning the solar panel two stepper motors are used, each for positioning in a plane. These stepper motors were driven by a Programmable Logic Controller (PLC). The controller is designed using wonderware software considering the inputs from LDR Sensor and solar panel output to drive the stepper motor connected to solar panels. Then the whole program is implemented with the help of PLC. The system was tested on a real time and results showed the proposed technique had improved the efficiency of solar panel by an amount of 25%

Metastatic Leiomyosarcoma of Small Intestine

This is the report of a case of primary leiomyosarcoma of the small intestine, an uncommon primary malignancy of the small intestine

Enhanced performance of micro grid in islanded mode with multi level inverter

Micro grids frameworks are little scale power supply arranges that have neighborhood power era. Micro grids network got to be one of the key spot in examination on dispersed vitality frameworks. Micro grids are fit for both creating their own electric force with little scale conveyed era (miniaturized scale sources) and receiving/sending out energy to the fundamental utility lattice. In this undertaking a control system for inverter based MG which can guarantee soundness and appropriate force sharing among the inverters, in islanded mode, is proposed. A MG can be worked in two modes, matrix associated and islanded mode. Every mode has its own control methodology. Small scale lattices (MG), for the most part inverter based, are increasing more significance as they can oblige different sorts of DGs viably and for their unrivaled force quality. The general control logic inside of a miniaturized scale matrix is that sources must depend just on nearby data, yet must participate with different sources. To perform that objective, the proposed controller uses hang attributes for dynamic force/recurrence and responsive force/voltage. The proposed control procedure depends on the utilization of a stage bolted circle to quantify the miniaturized scale framework recurrence at the inverter terminals, and to encourage regulation of the inverter stage in respect to the Micro grids network. This control system permits miniaturized scale lattices to flawlessly transition between matrix associated and self-sufficient operation, and the other way around. The controller has been actualized in a real Micro grids network that joined different sources. The principle goal of the proposed controller is to infuse a clean sinusoidal current to the lattice, even in the vicinity of nonlinear/unbalance loads and/or network voltage twists. The tedious control strategy is embraced in light of the fact that it can manage an extensive number of sounds at the same time by utilizing MAT Lab/Simulin

An overview of 3D printing in forensic science: the tangible third-dimension

There has been a rapid development and utilization of three‐dimensional (3D) printing technologies in engineering, health care, and dentistry. Like many technologies in overlapping disciplines, these techniques have proved to be useful and hence incorporated into the forensic sciences. Therefore, this paper describes how the potential of using 3D printing is being recognized within the various sub‐disciplines of forensic science and suggests areas for future applications. For instance, the application can create a permanent record of an object or scene that can be used as demonstrative evidence, preserving the integrity of the actual object or scene. Likewise, 3D printing can help with the visualization of evidential spatial relationships within a scene and increase the understanding of complex terminology within a courtroom. However, while the application of 3D printing to forensic science is beneficial, currently there is limited research demonstrated in the literature and a lack of reporting skewing the visibility of the applications. Therefore, this article highlights the need to create good practice for 3D printing across the forensic science process, the need to develop accurate and admissible 3D printed models while exploring the techniques, accuracy and bias within the courtroom, and calls for the alignment of future research and agendas perhaps in the form of a specialist working group

Prevalence of vitamin D deficiency in chronic obstructive pulmonary disease and it’s correlation with forced expiratory volume in one second: a tertiary care centre study

Background: Vitamin D deficiency is common all over the Indian subcontinent, with a prevalence of 70-100% in the general population. Vitamin D deficiency has a role in several diseases of the respiratory system including chronic obstructive pulmonary disease (COPD). Studies have shown that vitamin D deficient COPD patients have lower lung function measured by FEV1. We conducted a study to see prevalence of Vitamin D deficiency in COPD patients and it’s correlation with Forced Expiratory Volume in 1 second.Methods: A cross sectional observational study was performed in a tertiary care hospital in Hyderabad, Telangana during the period of one and half year. This included 104 COPD cases attending outpatient department of pulmonary medicine. Serum vitamin D levels were measured, and spirometry was done in all patients and data was analyzed accordingly.Results: Among 104 patients, 87 were males and 17 were females. Most of the study population (44.2%) was aged between 60-70 years. Mean BMI was 26.40 (±5.77) kg/m2. Majority of study populations (66.34%) were in GOLD stage 1 and 2. The mean Vitamin D value of the study population was 20.77±11.74ng/ml. Majority of the COPD patients were vitamin D deficient (69.2%). 25.0 % was severely deficient of vitamin D. The mean FEV1 volume (%) was 83.15±11.53, 60.97±17.47, 30.71±7.96 in sufficient, deficient and severe deficient patients.Conclusions: Vitamin D deficiency is common in COPD patients. Serum vitamin D deficiency increases with increased severity of COPD. There is positive correlation between serum vitamin D levels and post bronchodilator FEV1 (%).

Primary Carcinoma of the Fallopian Tube: A Review of a Single Institution Experience of 8 Cases

Aims and Objectives. To evaluate the clinicopathologic features, response to cytoreductive surgery and adjuvant platinum-based chemotherapy with or without paclitaxel. Materials and Methods. A retrospective observational study of 8 women with a histopathologic diagnosis of primary fallopian tube carcinoma (PFTC) from January 2000 to February 2013. Results. 4/8 (50%) of the women were in the early stage and an intraoperative frozen section was 100% effective in identifying fallopian tube carcinoma and then a staging laparotomy was performed. All 4/8 cases in the early stage had received and responded to single agent carboplatin and all are alive without clinical, radiological, or biochemical evidence of recurrence at the end of 2 years and the longest survivor has completed 13 years. Primary optimal cytoreductive surgery was achievable in 3/4 (75%) in advanced disease. All showed response to adjuvant paclitaxel and carboplatin (T+C), but all had succumbed to the disease following recurrence with mean progression-free survival of 19 months (range 15–21 months) and mean overall survival of 27 months (range 22–36 months). Conclusion. The pivotal role played by a frozen section in diagnosing PFTC which is rare needs to be reemphasized, therefore justifying a primary staging laparotomy in an early stage. Prolonged survival observed in this group following an optimum tailored adjuvant single agent carboplatin is worth noting

Dental caries in primary and permanent teeth in children's worldwide, 1995 to 2019: a systematic review and meta-analysis

Background: Early childhood caries (ECC) is a type of dental caries in the teeth of infants and children that is represented as one of the most prevalent dental problems in this period. Various studies have reported different types of prevalence of dental caries in primary and permanent teeth in children worldwide. However, there has been no comprehensive study to summarize the results of these studies in general, so this study aimed to determine the prevalence of dental caries in primary and permanent teeth in children in different continents of the world during a systematic review and meta-analysis. Methods: In this review study, articles were extracted by searching in the national and international databases of SID, MagIran, IranMedex, IranDoc, Cochrane, Embase, ScienceDirect, Scopus, PubMed, and Web of Science (ISI) between 1995 and December 2019. Random effects model was used for analysis and heterogeneity of studies was evaluated by using the I2 index. Data were analyzed by using the Comprehensive Meta-Analysis (Version 2) software. Findings: In this study, a total of 164 articles (81 articles on the prevalence of dental caries in primary teeth and 83 articles on the prevalence of dental caries in permanent teeth) were entered the meta-analysis. The prevalence of dental caries in primary teeth in children in the world with a sample size of 80,405 was 46.2% (95% CI: 41.6–50.8%), and the prevalence of dental caries in permanent teeth in children in the world with a sample size of 1,454,871 was 53.8% (95% CI: 50–57.5%). Regarding the heterogeneity on the basis of meta-regression analysis, there was a significant difference in the prevalence of dental caries in primary and permanent teeth in children in different continents of the world. With increasing the sample size and the year of study, dental caries in primary teeth increased and in permanent teeth decreased. Conclusion: The results of this study showed that the prevalence of primary and permanent dental caries in children in the world was found to be high. Therefore, appropriate strategies should be implemented to improve the aforementioned situation and to troubleshoot and monitor at all levels by providing feedback to hospitals