2,329 research outputs found

    Multi-objective whale optimization based minimization of loss, maximization of voltage stability considering cost of DG for optimal sizing and placement of DG

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    Huge need in electricity causes placement of Distribution Generation (DG)s like Photovoltaics (PV) systems in distribution side for enhancing the loadability by improving the voltage stability and minimization of loss with minimum cost. Many optimal placements of DG have done in focus of minimum loss and improving voltage profile. This Whale optimization is a new optimization technique framed with mathematics of spiral bubble-net feeding behavior of humpback whales for solving a power system multi-objective problem considering cost of the power tariff and DG. Here main objectives are minimizing loss and cost with maximization of voltage stability index. IEEE 69 power system data is used for solution of the proposed method

    A preliminary study of the effect of mantis shrimp as an ingredient in Penaeus indicus postlarval diets

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    The apparent digestibility (Da) of five diets, incorporated with mantis shrimp at levels of to, 15, 20, 25 and 30% was determined for Penaeus indicus postlarvae (initial weight ranging from 0.087-0.106 g). Oa for crude protein ranged from 61.97 to 92.76% showing a significant increase with increase in the level of mantis shrimp upto 25% in the diet and was higher than the control value of 66.09 (P > 0.05). Crude fat digestibility ranged from 52.26 to 89.57% also showing an increase upto 25% incorporation of mantis shrimp

    Application of modern control and nonlinear estimation techniques

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    Control and nonlinear estimation techniques applied to optimal guidance of low thrust spacecraft, planetary soft landings, and feedback systems desig

    A new mechanism for negative refraction and focusing using selective diffraction from surface corrugation

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    Refraction at a smooth interface is accompanied by momentum transfer normal to the interface. We show that corrugating an initially smooth, totally reflecting, non-metallic interface provides a momentum kick parallel to the surface, which can be used to refract light negatively or positively. This new mechanism of negative refraction is demonstrated by visible light and microwave experiments on grisms (grating-prisms). Single-beam all-angle-negative-refraction is achieved by incorporating a surface grating on a flat multilayered material. This negative refraction mechanism is used to create a new optical device, a grating lens. A plano-concave grating lens is demonstrated to focus plane microwaves to a point image. These results show that customized surface engineering can be used to achieve negative refraction even though the bulk material has positive refractive index. The surface periodicity provides a tunable parameter to control beam propagation leading to novel optical and microwave devices.Comment: 6 pages, 7 figures in RevTex forma

    J/ψ production via fragmentation at HERA

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    We compute the contributions to large-pTJ/ψ production at DHEA coming from fragmentation of gluons and charm quarks. We find that the charm quark fragmentation contribution dominates over the direct production of J/ψ via photongluon fusion at large-pT, while the gluon fragmentation is negligibly small over the whole range of pT. An experimental study of pT distributions of J/ψ at HERA will providea direct probe of the charm quark fragmentation functions

    Development, characterization, efficacy and repeated dose toxicity of nanoemulsified ethanolic extract of Enicostemma littorale in Streptozotocin-induced diabetes rats.

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    Alginate nanocapsules of ethanolic extract of Enicostemma littorale (NEL) were prepared by emulsification, cross linking with calcium chloride and solvent removal. Based on total phenol content the loading efficiency of the nanocapsules was 89% at an optimum concentration of 2: 18 (mg ml -1) for plant extract: olive oil. The photon correlation spectroscopy (PCS) revealed that the mean particle diameter of optimized formulation was 233 nm and scanning electron microscopy (SEM) showed a spherical morphology. When subjected to Fourier transform infrared spectroscopy (FT-IR) for the compatability analysis between plant extract and sodium alginate, it revealed that the phytoconstituents were stable. The purpose of the present study was to compare the anti-diabetic activity of NEL and E.littorale (EL) in streptozoticin induced male rats. An oral dose of NEL (20 mg/kg b.w) and EL (2000 mg/kg b.w) showed a relatively similar antidiabetic effect, reducing the blood glucose, triglycerides, cholesterol, creatinine, ALT, AST, and ALP. Moreover, NEL is 100 times less than EL exhibiting better results within 10 days of treatment. These biochemical assessments were supported by rat biopsy examinations. In conclusion, the nanoemulsification method can be applied for poor water-soluble ethanolic herbal extracts to reduce the dosage and time

    SMART INDOOR VERTICAL FARMING MONITORING USING IoT

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     The population of the world is expected to reach around 9.7 billion by the end of the year 2050. Currently, around 56% of the world‟s population lives in the urban areas, putting a lot of pressure on the maintenance of the air quality and the greenery in these areas. But the issue is that there is lack of space for cultivation in urban areas where urban gardening comes into picture. Human labour is involved in traditional methods of monitoring and farming and is it is time consuming. Vertical farming is the practice of growing plants in the vertically inclined surfaces or in vertically stacked layers. Here, plants are grown in a controlled environment. The proposed system uses the concepts of artificial photosynthesis, vertical and zone-wise crops production and the Internet of Things. This increases the productivity. By using the various sensor networks, the environmental parameters can be noted. The retrieved data is stored and displayed on a customized webpage which can be accessed through mobile app. Thus, the indoor vertical farm can be monitored and controlled even without direct presence of the cultivator at the plant environment. The variations in the individual sensor‟s data with respect to time can be graphically plotted for the improved analysis and monitoring of the system. Increasing population demands increase in food production by the next decade. Internet of things is implemented in vertical and indoor farming to establish a smart way of cultivation. Basic functions like monitoring the soil moisture, temperature, humidity are performed. Artificial photosynthesis for the plants using grow-lamps and drip irrigation is implemented to maintain the urban gardens. Using GSM technology systematic alerts regarding the status of garden to the user at regular intervals of time is delivered. An android app interface is also implemented in the proposed system to remotely control the garden functioning hence enhancing the smart way of agriculture

    Chemical Immobilization of Sloth Bears ( Melursus ursinus

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    The present study was conducted to define the physiological responses of captive sloth bears immobilized with ketamine hydrochloride and xylazine hydrochloride and to determine and compare the values of hematology and serum biochemical parameters between sexes. A total of 15 sloth bears were immobilized using combination of ketamine hydrochloride and xylazine hydrochloride drugs at the dose rate of 5.0 milligram (mg) per kg body weight and 2.0 mg per kg body weight, respectively. The use of combination of these drugs was found satisfactory for the chemical immobilization of captive sloth bears. There were no significant differences observed in induction time and recovery time and physiological parameters such as heart rate, respiratory rate, and rectal temperature between sexes. Health related parameters comprising hematological values like packed cell volume (PCV), hemoglobin (Hb), red blood cell count (RBC), erythrocyte indices, and so forth and biochemical values like total protein, blood urea nitrogen (BUN), creatinine, alkaline amino-transferase (ALT), aspartate amino-transferase (AST), and so forth were estimated in 11 (5 males and 6 females) apparently healthy bears. Comparison between sexes revealed significant difference in PCV (P<0.05) and mean corpuscular hemoglobin concentration (MCHC) (P<0.05). The study might help to evaluate health profiles of sloth bears for appropriate line treatment

    Physics Beyond the Standard Model and Cosmological Connections: A Summary from LCWS 06

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    The International Linear Collider (ILC) is likely to provide us important insights into the sector of physics that may supersede our current paradigm viz., the Standard Model. In anticipation of the possibility that the ILC may come up in the middle of the next decade, several groups are vigourously investigating its potential to explore this new sector of physics. The Linear Collider Workshop in Bangalore (LCWS06) had several presentations of such studies which looked at supersymmetry, extra dimensions and other exotic possibilities which the ILC may help us discover or understand. Some papers also looked at the understanding of cosmology that may emerge from studies at the ILC. This paper summarises these presentations.Comment: 8 pages (including cover page) LaTeX, Summary talk presented at the International Linear Collider Workshop in Bangalore, India in March 200
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