633 research outputs found
SFCL and Applications Study for Implementation in Electrical Power System
The increase in demand and consumption of electricity has led to an increase in system errors. Superconducting Residual Current Limiters (SFCLs) provide ideal performance in the power grid. The concept of superconducting fault current limiters (SFCLs) suggests two types of superconducting materials. First of all Resistive-SFCL (which is inserted directly in series with the circuit to be protected). Second, the inductive SFCL (a transformer shorted by a superconducting tube). We also explore some uses of the proposed SFCLs to limit the fault current that appears in the electrical network. The fault current level has become a major problem in the operation of transmission and distribution systems. Applying the superconducting residual current limiter (SFCL) would not only reduce the load on the equipment in the network, but can also provide a link to improve the reliability of the power system. They also make the electricity grid more efficient and more integrated
Overview of Renewable Energy System Architecture and Performance
Global interest in solar energy has peaked as governments and organizations continue to take a stand against the dependence on fossil fuels and the high carbon footprint of the industrialized world. Using renewable energy technologies such as solar energy appears to be a good option, especially for third world countries that receive large amounts of solar radiation all year round. This article provides an overview of the architecture of renewable energy systems and the solar and photovoltaic (PV) energy system. It also provides a description of the system connected to the grid and the autonomous PV production system
Isolation and identification of flavonoid from in vitro and natural grown Nyctanthes arbor-tristis L. (Harsingar) - a medicinally important plant
A rapid propagation protocol was established and optimized in vitro for Nyctanthesarbor-tristis L. a small ornamental tree with medicinal and aromatic properties. Nodalexplants were cultured on Murashige and Skoog (MS) medium supplemented with variousplant growth regulators: BAP and Kn in combination. Maximum frequency of shoot initiation(FSI) (1-2 wks) and mean shoot number (MSN) 3.02±0.437 were obtained on BAP + Kn (1.0 +0.1), whereas high mean shoot length (MSL) 2.9±0.356 was observed on BAP + Kn (2.0 + 0.5)Elongated microshoots (3-4 wks) were successfully rooted and regenerated plants weresimultaneously hardened and acclimatized. An approximately 91% survival rate wasrecorded. Natural leaf, stem, in vitro leaf and stem were subsequently extracted in 80%methanol and were subjected to thin layer chromatography along with the standard
Study of Distributed Controlling Techniques in Micro Grids
: Microgrids are moving from laboratory benches and pilot demonstration sites to commercial markets thanks to technological improvements, lower costs, proven track record and growing recognition of their benefits. They are used to improve the reliability and resilience of power grids, manage the addition of distributed clean energy resources such as wind and solar photovoltaic (PV), reduce fossil fuel emissions, and provide power in areas not supported by a centralized electrical system. The infrastructure is provided. This article presents the control techniques for DC micro-network, distributed control, and description of micro-grid systems
Key Perspectives in Power Aware Ad-hoc Internet of Things with Advanced Networks and Real Time Scenarios
Smart gadgets with integrated power optimization segments are the key perspectives that use Internet of Things (IoT) enabled technology to promote lifestyle advancements. It has an influence on a number of sectors in academia and/or business thanks to its strong integration with the current Cloud architecture. Recently, the Internet of Things has been acknowledged as a disruptive technology for the aerial ad hoc network. IoT may be thought of as a network inside a network. IoT-based networks rely heavily on the so-called self-organizing capability working in a dispersed manner in ad hoc networks, with users travelling at speeds ranging from walking pace to automobile, rail, or airline speed. IoT applications that assist logistics and the administration of ad hoc networks may be found in a broad variety. Utility companies are under pressure now to produce ever more enormous amounts of electricity. In megacities, there is an exponential rise in the number of people and energy users. Thus, the need for energy conservation is growing significantly on a global scale. The best way to optimise the rising energy demands and consumptions is as a consequence of the development of energy-monitoring systems. These solutions can cut current utilisation levels, stop energy waste, and make better use of our resources
Study of near miss cases in obstetrics and maternal mortality in Bastar, Chhattisgarh, India
Background: According to millennium development goals (MDG) in 2015, the goal number five was to improve the maternal health is falling way below our target. Our aim in reducing maternal mortality by 75% has not been met with MDG. Pregnant women’s health status is not reflected by mortality indicators alone hence the concept of severe acute maternal morbidity (SAMM) is an apt for the present health providing system. The main objectives of the study were to; (1) To determine the frequency of maternal near miss, maternal near miss incidence ratio (MNMR), maternal near miss to mortality ratio and mortality index; (2) To compare the nature of near miss events with maternal mortality; (3) To observe the trend of near miss events.Methods: It was a retrospective study design conducted at Late B.R.K.M Government medical college, Jagdalpur, Chhattisgarh, India during September 2013 to August 2014. The study population includes near miss cases and maternal deaths. Cases were defined based on WHO criteria 2009.Results: Out of 3539 deliveries, 39 wear near miss cases during the study period. The maternal near miss incidence ratio was 11.9/1000 live births, maternal near miss to mortality ratio was 2.05:1, and mortality index was 32.7%. Hemorrhage was the leading cause (43.5%), followed by severe anemia (15.38%), rupture uterus (15.38%), preeclampsia/eclampsia (12.82%), sepsis (5.12%), complicated malaria (5.12%) and hepatitis (2.56%). Maternal mortality ratio (MMR) was 580/100000 live births.Conclusions: Hemorrhage was the leading cause of near miss events. As near miss analysis indicates the quality of health care, it is worth presenting in national indices
Power and Energy Optimized Approach towards Sustainable Mobile Ad-hoc Networks and IoT
Investigating how real-time applications in sectors like healthcare, agriculture, construction, and manufacturing can enhance their effectiveness and sustainability through the use of autonomous sensor technologies, green computing, and big data analytics is part of the work with sustainable approaches for optimising performance of networks. This authoritative guide exposes the drawbacks of conventional technology and provides techniques and tactics for addressing Quality of Service (QOS) issues and enhancing network performance. It brings together a broad team of subject-matter specialists. Several in-depth chapters cover topics like blockchain-assisted secure data sharing, intelligent management of ad hoc networks, smart 5G Internet of Things scenarios, and the use of artificial intelligence (AI), machine learning (ML), and learning techniques (DL) techniques in smart healthcare, smart factory, and smart agriculture
Study of efficacy and complication of postpartum IUCD insertion at Govt. medical college, Bastar
Background: This study is aimed at determining the safety, efficacy and expulsion of PPIUCD. This study also aims to determine the rates of complications (bleeding, pelvic infection, lost strings, and displacement) following PPIUCD insertion among the women in one year period.Methods: This study was conducted at department of obstetrics and gynecology, Late B.R.K.M Govt. medical college, Jagdalpur, Chattishgarh. Women admitted and delivered were counseled and those who fulfilled the medical eligibility criteria and had no contra indication for PPIUCD were provided the PPIUCD services.Results: Total women 600, lost to follow-up 329, complications 162 (expulsion 14, bleeding 35, string problem 44), removal 102.Conclusions: The PPIUCD (Cu380A) is demonstrably safe, effective, has high retention rate. The expulsion rate is not very high and it can be reduced with correct techniques, correct selection of clients, and correct time selection for the client
Morphometric analysis of lateral menisci in North Indian population: a cadaveric study
Background: The menisci (formerly called semilunar cartilages) of the knee lie within the knee joint between the femur and tibia and somewhat adapt the tibial and femoral condyles to each other. The menisci are liable to injury resulting from twisting strains applied to flexed weight bearing knee. The mean annual incidence of meniscal tears is about 60-70 per 100,000 with a male to female ratio ranging from 2.5:1 to 4:1. The present study was conceived to provide valuable morphological data for preparing meniscal allograft for people of this region so that accurate matching can be done in meniscal transplantation.Methods: The study was carried out in 100 lateral menisci of adult human male cadavers with age ranging from 20 to 50 years. Distance between anterior and posterior horns of lateral meniscus, outer and inner border length, width and thickness at three points, namely anterior, middle and posterior one third was taken with the help of non-elastic thread and Vernier caliper. Written informed consent was taken from the relatives of the deceased.Results: Distance between the two horns of lateral meniscus, outer border and inner border length of right and left lateral meniscus were not significantly differently from each other. Width and thickness of lateral meniscus was highest in the middle part which was significantly different from other parts.Conclusions: In conclusion, width and thickness was highest in the middle third part of lateral menisci. Also, shapes of lateral menisci were different from others studies. The current study presents a database of morphological values of lateral menisci for North Indian population for meniscal transplantation.
TETRACYCLINE: A USEFUL CLASS OF ANTIBIOTICS FOR SUCCESSFUL ENDODONTICS
Antibiotics have been used frequently in treatment of odontogenic infections. However in endodontic diseases, the source of infection is rarely eliminated by the use of antimicrobial drugs alone. The mainstay of treating pulpal and periapical infections remains the cleaning and debridement of root canal system. Topical antibacterial agents can be used as an adjunct in the form of an irrigant or intracanal medicament during endodontic therapy. Most often employed antibiotic in endodontics is tetracycline class of drugs. Research has shown that tetracycline agents have various beneficial properties apart from bacteriostatic action, including antiresorptive activity, ability to remove smear layer from canal surface after cleaning and shaping. They also show the property of substantivity which prolongs their effect by allowing slow gradual release over time. Therefore, the present paper aims to outline the possible applications of tetracycline drugs in endodontics
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