660 research outputs found

    Wireless power transfer using relay resonators

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    This paper presents an advanced design configuration of a wireless power transfer system using overlapping relay coil techniques for free loading position. The work undertaken investigates the tuning position of prototype relay coils in a horizontal configuration in order to evaluate power transfer efficiency versus increasing operating distance between the transmitter and receiver coils. A prototype relay coil system was evaluated to determine the optimum distance between the transmitter and receiver. Finite element magnetic (FEM) simulation was used to appraise the magnetic field distribution and power transfer efficiency with respect to a strongly coupled magnetic resonance condition. Experimental and simulation results analysis suggest that the proposed design could achieve 85% to 90% efficiency within a 4 cm operational distance. Finally, the experimental results were analyzed and compared with the simulation results

    Evaluation of removal of heavy metals by microorganisms isolated from industrial effluents

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    At present various microorganisms are used for bioremediation of heavy metals from soil and water bodies. The aim of present work was to isolate the potential heavy metal degrading organisms and to apply for bioremediation of heavy metals from the domestic as well as industrial waste. The study involves the isolation of the bacterial species residing the natural habitat of such environments and screening of these isolates to degrade different heavy metals such as Cu, Cd, Hg, Ni, and Zn  up to the concentration 2000 ppm. There were six bacterial potential isolates  found namely Pseudomonas spp., (3), Achromobacter spp., Uncultured Microbacterium spp., and Exigoubacterium spp., which showing the growth up to the concentration of 2000 ppm. The potency of the six potential isolates was determined by using the conventional plate count technique.  The percentage removal of analyzed by the use of ICP-AES technique. The study shows isolation of the species which can remove heavy metal up to 60%. It was also found that the increase in the incubation time causes more reduction in the heavy metal concentration. The mutational analysis of the isolates for the strain improvement process shows that the Exigoubacterium species can grow at 3000 ppm heavy metal concentration and showed 60% reduction in heavy metal. This highly potential species can be used for the removal of different heavy metals which is also a viable, eco friendly and cost effective technology for cleanup of the environment.

    Acid and Bile Tolerance, Antibacterial Activity, Antibiotic Resistance and Bacteriocins Activity of Probiotic Lactobacillus Species

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    AbstractLactobacilli are an extremely important group of probiotic bacteria inhibit undesirable microflora in the gut and create a healthy equilibrium between beneficial and potentially intestinal pathogens. The study was attempted to isolate Lactobacilli strains from goat milk to search for a new effective antibacterial probiotic strains. From  40 raw goat milk samples, 48 Lactobacilli isolates were isolated, identified and analyzed for their probiotic properties including acid and bile salt tolerance, antibacterial activity against enteric pathogens, antibiotic resistance patterns and production of bacteriocin. Out of these Lactobacillus species, five isolates were potential probiotics, and bacteriocins produced by them showed demonstrable antibacterial activity against the test pathogens such as S. typhi, Pr. vulgaris, K. pneumoniae, Sh. flexneri, E. aerogenes and E. coli. The bacteriocin produced by L. plantarum (G95a) and L. rhamnosus (G119b) was prominent antibacterial, resistant to heat at 1210C and tolerated acidic pH 3 but sensitive to pH 9. The present study suggested that isolated Lactobacillus strains have an excellent probiotic potential and control of enteric infections and restoration of microbial gut flora.Keywords: Lactobacillus, Acid tolerance, Bile tolerance, Probiotic, Bacteriocin, Antibacterial activit

    An Evaluation of Probiotic Potential of Lactobacillus sp. from Milk of Domestic Animals and Commercial Available Probiotic Preparations in Prevention of Enteric Bacterial Infections

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    Probiotics are the health promoting viable microorganisms that exhibit a beneficial effect on the health of human being by improving the intestinal microbial balance. A total of 120 milk samples (40 each from buffalo, cow, and goat) were analyzed and 110 isolates were identified as Lactic Acid Bacteria (LAB). Out of these 11 isolates were identified as prominent probiotics, among them 3 isolates were excellent probiotics. These excellent probiotics were compared for their probiotic potential with commercial probiotic preparations such as Sporlac powder, LactoBacil plus, P-Biotics kid, Gastroline, Pre-Pro kid and standard probiotic bacterial strains L. plantarum (MTCC 2621) and L. rhamnosus (MTCC 1048). The isolated LAB exhibited excellent probiotic characteristics than commercial probiotic preparations and standard probiotic bacterial strains. Study suggested that use of these probiotic bacteria from milk of domestic animals can be help to prevent or control the intestinal infections and contributes health benefits to consumers

    Critical review of Sneha Kalpana

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    Sneha Kalpana is a unique contribution of Ayurvedic science. It is a group of products containing mainly medicated Taila and Ghrita; along with Vasa and Majja, which can be used internally as well as externally. It is one of the widely used dosage forms in Ayurvedic drug industry and is said to achieve solubility of both fat soluble and water soluble extractives. It is absorbed easily, and is said to cross blood-brain-barrier. Acharyas have opined to carry out Sneha Murchhana to remove ‘Gandha’ and ‘Ama’ Doshas from the Sneha. Acharya Sharangdhara mentioned the shelf life (Saviryatavadhi) of various dosage forms. Amendments in Drugs and Cosmetics’ Act 1940 and Rules 1945, have redefined the shelf life, which is elaborated in this article

    Student Engagement Prediction in Online Session

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    The individuals who make up the globe constantly advance into the future and improve both their personal lives and the conditions in which they live. One ‘s education is the basis of one ‘s knowledge. Humans' education has a significant impact on their behavior and IQ. Through the use of diverse pedagogical techniques, instructors always play a part in changing students' ways of thinking and developing their social and cognitive abilities. However, getting students to participate in an online class is still difficult. In this study, we created an intelligent predictive system that aids instructors in anticipating students' levels of interest based on the information they learn in an online session and in motivating them through regular feedback. The level of students' engagement is divided into three tiers based on their online session activities (Not engaged, passively engaged, and actively engaged). The given data was subjected to the application of Decision Trees (DT), Random Forest Classifiers (RF), Logistic Regression (LR), and Long Short-Term Memory Networks are among the numerous machine learning approaches (LSTM). According to performance measurements, LSTM is the most accurate machine learning algorithm. The instructors can get in touch with the students and inspire them by improving their teaching approaches based on the results the system produces

    Universal Event and Motion Editor for Robots\u27 Theatre

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    Most of work on motion of mobile robots is to generate plans for avoiding obstacles or perform some meaningful and useful actions. In modern robot theatres and entertainment robots the motions of the robot are scripted and thus the performance or behavior of the robot is always the same. In this work we want to propose a new approach to robot motion generation. We want our robot to behave more like real people. People do not move in mechanical way like robots. When a human is supposed to execute some motion, these motions are similar to one another but always slightly or not so slightly different. We want to reproduce this property based on the introduced by us new concept of probabilistic regular expression, a method to describe sets of interrelated similar actions instead of single actions. Our goal is not only to create motions for humanoid robots that will look more naturally and less mechanically, but also to program robots that will combine basic movements from certain library in many different and partially random ways. While the basic motions were created ahead of time, their combinations are specified in our new language. Although now our method is only for motions and does not take inputs from sensors into account, in future the language can be extended to input/output sequences, thus the robot will be able to adapt the motion in different ways, to some sets of sequences of input stimuli. The inputs will come from sensors, possibly attached to limbs of controlling humans from whom the patterns of motion will be acquired

    BIOPROSPECTING OF NEXT-GENERATION PROBIOTICS FOR MICROBIAL BIOTHERAPY: NOVEL DRUGS AND FUNCTIONAL FOODS

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    DES2 is a fatty acid Delta 11 desaturase capable of synthesizing palmitvaccenic acid in the arbuscular mycorrhizal fungus Rhizophagus irregularis

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    Arbuscular mycorrhizal (AM) fungi are oleaginous organisms, and the most abundant fatty acyl moiety usually found in their lipids is palmitvaccenic acid (16:1Δ11cis). However, it is not known how this uncommon fatty acid species is made. Here, we have cloned two homologs of Lepidopteran fatty acyl-CoenzymeA Δ11 desaturases from the AM fungus Rhizophagus irregularis. Both enzymes, DES1 and DES2, are expressed in intraradicle mycelium and can complement the unsaturated fatty acid-requiring auxotrophic growth phenotype of the Saccharomyces cerevisiae ole1Δ mutant. DES1 expression leads almost exclusively to oleic acid (18:1Δ9cis) production, whereas DES2 expression results in the production of 16:1Δ11cis and vaccenic acid (18:1Δ11cis). DES2 therefore encodes a Δ11 desaturase that is likely to be responsible for the synthesis of 16:1Δ11cis in R. irregularis

    Safety and efficacy of hybrid platform design sirolimus eluting stent system in percutaneous coronary intervention in ST elevation myocardial infarction patients at 1 year after treatment

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    Background: STEMI is among the most complex and dramatic clinical presentation of coronary artery disease. The highest risk of mortality and stent thrombosis is observed in the subjects undergoing primary PCI. Choice of stent is often critical in Primary Angioplasty in Myocardial Infarction. GenXsync (MIV Therapeutics India Ltd, Surat India) is a stent having hybrid stent platform biodegradable polymers with the confidence of Sirolimus. The primary objective of this study was to establish safety and efficacy of GenXsync Sirolimus Eluting hybrid design stent in STEMI.Methods: A total of 73 patients of STEMI undergoing PCI were enrolled from June 2013 to January 2014. The average door to balloon time was 30±0.04 minutes with the minimumbeing15 minutes and maximum of 2 hours 44min. Most of the patients (69/ 73: 94.52%) underwent primary PCI. One patient (1.37%) was taken up for PCI after successful thrombolysis and two patients had to undergo rescue PCI after failed thrombolysis. All subjects underwent PCI with GenXsync Sirolimus Eluting hybrid design stent. Total 79 stents were used (average 1.08±0.38 stent per patient).  The subjects were followed up for one year after discharge.Results: There were 80.82% (59) males, 41.09% (30) diabetic, 27.39% (20) hypertensive, 52.05% (38) current smokers and 2 (2.74%), patients with chronic renal disease. The cardiac history was significantly complex, characterized by prior coronary artery disease in 4 (5.48%), prior MI in 5 (6.85%) including prior PCI in 2 (2.74%), congestive heart failure in 1 (1.37%), ST depression in 71 (97.26%), complete heart block in 4 (5.48%) and left bundle branchblock 1 (1.37%). At admission, 4 (5.4%) patients had cardiac arrest. Among the patients 32 (43.84%), 34 (46.58%), 7 (9.59%) had single, double and triple vessel disease respectively. Average Troponin I was 55.20± 59.34 and by Killip classification, the subjects with class I, class III and class IV were 65 (89.04%), 4 (5.48%), 4 (5.48%) respectively. At discharge there were 3 (3.34%) Major adverse cardiac events and at 1 year, there were 5 (5.48%) major adverse cardiac events. There were no acute stent thromboses. All subjects received dual antiplatelet therapy for one year (Aspirin and one among Clopidogrel, Prasugrel or Ticagrelor at the discretion of the operator). There were total of 2 (2.74%) stent thrombosis events between discharge and 1 year, including in 1 subject who discontinued Antiplatelet therapy within 1 year. None of 4 deaths including 2 cardiac were practically related with the device and procedure. These 4 deaths were due to cardiogenic shock (1), during MVR surgery (1), During surgery on leg, due to major bleeding (1) and Due to pre-existing CHF (1).Conclusions: In contemporary practice of percutaneous coronary intervention in ST Elevation Myocardial Infarction, Genxsync stent was associated with low risks of stent thrombosis and MACE
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