9 results on '"K. Shashikumar"'
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2. Phosphine‐Free Ruthenium Complex for Hydrogenation of Carbonyl Compounds: Synthesis and Applications
- Author
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Suraj B. Maldode, Suribabu Sattineni, Vidya D. Avasare, A. M. Sathiyanarayanan, K. Shashikumar, Sachinkumar Sajjanar, Sambasivam Ganesh, Amol V. Gadakh, and Shivaprasad N. Hegde
- Subjects
chemistry.chemical_compound ,Chemistry ,Polymer chemistry ,chemistry.chemical_element ,General Chemistry ,Phosphine ,Ruthenium - Published
- 2021
3. Automatic sequential reactive power compensation and harmonic suppression at loads using appliance clustering and power quality monitoring
- Author
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K. Shashikumar, Kok Swee Sim, and C. Venkataseshaiah
- Subjects
020203 distributed computing ,Engineering ,Smart system ,business.industry ,Real-time computing ,020206 networking & telecommunications ,02 engineering and technology ,Power factor ,AC power ,Power (physics) ,Compensation (engineering) ,Software ,Arduino ,Harmonics ,0202 electrical engineering, electronic engineering, information engineering ,business ,Simulation - Abstract
We have home brewed a perfect recipe for Arduino automated home utility monitoring and correction system. In this paper, we propose a smart system that could easily be built using off-the-shelf modules and could be programmed to fulfill utility power quality requirements using existing smart utility meters and non-intrusive appliance monitoring and correction system. We have included the hardware design, software, wireless topology system used, experiment results and implemented real hardware load modeling. Our utility monitoring and correction system can be used for detecting energy expenditure breakdown per appliance, detecting power hungry faulty appliance, solving the power quality problem at the root and recognition of occupant activity. The system also able to correct each appliances power factor and suppress its harmonics, resulting in more efficiently reducing of electricity bill of building owners.
- Published
- 2016
4. SMART HOME METER PROFILER WITH LOAD AUTHENTICATION, SHOCK PROTECTION, FAULT PROOF AND RESTRICTED DEMAND MANAGEMENT.
- Author
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K., Shashikumar, C., Venkataseshaiah, and Swee, Sim Kok
- Subjects
HOME automation ,CONSUMER protection ,EVIDENCE ,OCEAN waves ,SOLAR houses - Abstract
In this paper, we have designed and installed a shock or fault protection system for a single-phase home electrical system using Circuit Breaker (CB) devices available on the market, bearing in mind that certain product areas do not provide shock protection to consumers. Our novel Smart Meter Circuit Breaker (SMCB) is designed to achieve a fail-proof shock protection system architecture that could be incorporated into existing Smart Meters (SM) within a Device Level Load Meter (DLLM). We also illustrate how a colonized and alienated appliance Authentication Outlet (AO) system could be used advantageously for a shock or fault protection system and for our novel Restricted Demand Management system with the help of a distinctive load signature alienated appliance AO. Our Restricted Demand Management system could be used together with the Scheduler Demand Management system already on the market. Finally, this paper shows how our SMCB for an alienated appliance AO detection system for a single-phase home system was simulated, built and tested. The proposed home layout and the Restricted Demand Management System are simple to program and implement and help to reduce energy bills as only particular appliances are allowed to operate at certain times during the day and night. The system also restricts some hazard risk appliances from being used at other outlets. Our proposed system is completely hazard, fault and shockproof for a single phase home electrical system. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
5. Juggling an Arduino for multi-utility-meter, load profiling and a novel waveform capture logger applications
- Author
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Sim Kok Swee, K. Shashikumar, and C. Venkataseshaiah
- Subjects
Profiling (computer programming) ,Engineering ,business.industry ,010401 analytical chemistry ,020206 networking & telecommunications ,Topology (electrical circuits) ,02 engineering and technology ,01 natural sciences ,0104 chemical sciences ,Power (physics) ,Software ,Arduino ,Embedded system ,0202 electrical engineering, electronic engineering, information engineering ,Wireless ,Waveform ,Metering mode ,business - Abstract
It's obvious we love Arduino due to its simplicity but it does not lack in handling complexity. We have put together a list of ideas using Arduino as utility metering. We have included the hardware design, software and wireless topology system used. Our design is capable to preform multi-utility-metering, utility real time load profiling and a novel utility waveform capture logging. In this paper we present off-the-shelf modules that could easily build and be programmed to fulfill utility metering transformation and integration with the existing utility meters. The same hardware can be used as multi-utility-meter, load profiling or waveform capture with just a program flicker. Our utility meter can be used for detecting energy expenditure breakdown per appliance, power hungry faulty appliance and recognition of occupant activity. It also helps empower building owners of energy awareness.
- Published
- 2016
6. Fine-scale analysis of shelf–slope physiography across the western continental margin of India
- Author
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Pratima Jauhari, Vasudev Mahale, Ranadhir Mukhopadhyay, Bishwajit Chakraborty, M. Rajesh, and K. Shashikumar
- Subjects
geography ,geography.geographical_feature_category ,Continental shelf ,Continental crust ,Environmental Science (miscellaneous) ,Structural basin ,Geotechnical Engineering and Engineering Geology ,Oceanography ,Seafloor spreading ,Scale analysis (statistics) ,Basement (geology) ,Continental margin ,Earth and Planetary Sciences (miscellaneous) ,Bathymetry ,Geomorphology ,Geology - Abstract
We attempt here to quantify and model physiographic features off the central west coast of India in terms of power spectral exponent, amplitude parameter. We demonstrate that statistical analysis of multi-beam echo-sounder grid bathymetry data is able to characterise the outer shelf, upper slope, shelf margin basin and several structural rises in the region. A scatter diagram analysis shows that the seafloor data can be grouped into two distinct clusters. Distinctly different clustering patterns are observed over the structural rises, compared to the shelf, slope and basinal areas. This suggests different modes of formation for the members of these two clusters. In fact, the steep structural rises appear to be part of the NW–SE-trending coast-parallel Mid-Shelf Basement and Prathap ridges. These ridges are rift-induced volcanic emplacements on a stretched and thinned continental crust which probably formed during mid-Cretaceous times.
- Published
- 2006
7. Cultivar and Winter Cover Effects on Bermudagrass Cold Acclimation and Crown Moisture Content
- Author
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K. Shashikumar and J. L. Nus
- Subjects
Early winter ,biology ,Agronomy ,Crown (botany) ,Temperate climate ,Cold acclimation ,Cultivar ,Cynodon dactylon ,biology.organism_classification ,Hardiness (plants) ,Agronomy and Crop Science ,Water content - Abstract
A prime concern for turfgrass manangers using bermudagrass [Cynodon dactylon (L.) Pers.] in temperate regions is its winter survival. Because bermudagrasses do not reach maximum hardiness until midwinter, they are susceptible to cold temperatures that may occur during early winter. Management strategies to reduce winter injury and hasten post-dormancy growth include the use of protective winter covers. A 3-year field study was initiated to test the effect of spun-bonded winter covers applied in early December and removed in late May on bermudagrass cold acclimation and crown moisture content, and to assess the variation in the cold acclimation of eight selected cultivars (.)
- Published
- 1993
8. Fungi Associated with Spring Dead Spot Reduces Freezing Resistance in Bermudagrass
- Author
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K. Shashikumar and J.L. Nus
- Subjects
Leptosphaeria korrae ,Horticulture ,biology ,Resistance (ecology) ,Inoculation ,Biological property ,Botany ,Poaceae ,Cynodon dactylon ,Leptosphaeria ,biology.organism_classification ,Acclimatization - Abstract
Although the effect of cold winters on the severity of bermudagrass (Cynodon dactylon Pers.) spring dead spot (SDS) has been studied, information is needed concerning the effect of infection by fungi associated with SDS on the host's freezing resistance. A-22 bermudagrass was inoculated with Leptosphaeria korrae J. Walker & A.M. Smith and Ophiospharella herpotricha (Fr.) J. Walker & A.M Smith. Differential thermal analysis was used to monitor exotherm temperatures of healthy and O. herpotricha- and L. korrae-infected A-22 bermudagrass at 10-day intervals during 90 days of acclimation in cold chambers. Healthy bermudagrass crowns supercooled to an average of -6.7C and fungi-infected crowns supercooled to an average of -4.8 and -4.4C, respectively. Healthy crown exotherm temperatures were significantly lower than those of fungi-infected bermudagrass crowns on all nine sampling dates. This result indicates that fungi-infected plants are more susceptible to cold damage.
- Published
- 1993
9. Antibiotics in the treatment of acute exacerbations of chronic bronchitis.
- Author
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Dever LL, Shashikumar K, and Johanson WG Jr
- Subjects
- Acute Disease, Anti-Bacterial Agents economics, Anti-Bacterial Agents pharmacokinetics, Bronchitis, Chronic microbiology, Cephalosporins economics, Cephalosporins pharmacokinetics, Cephalosporins therapeutic use, Clinical Trials as Topic, Drug Administration Schedule, Drug Resistance, Bacterial, Fluoroquinolones economics, Fluoroquinolones pharmacokinetics, Fluoroquinolones therapeutic use, Humans, Macrolides economics, Macrolides pharmacokinetics, Macrolides therapeutic use, Penicillins economics, Penicillins pharmacokinetics, Penicillins therapeutic use, Tetracyclines economics, Tetracyclines pharmacokinetics, Tetracyclines therapeutic use, Anti-Bacterial Agents therapeutic use, Bronchitis, Chronic drug therapy
- Abstract
The benefit of antimicrobial therapy for patients with an acute exacerbation of chronic bronchitis (AECB) remains controversial for two main reasons. First, the distal airways of patients with chronic bronchitis are persistently colonised, even during clinically stable periods, with the same bacteria that have been associated with AECB. Second, bacterial infection is only one of several causes of AECB. These factors have led to conflicting analyses on the role of bacterial agents and the response to antimicrobial therapy of patients with AECB. An episode of AECB is said to be present when a patient with chronic obstructive pulmonary disease (COPD) experiences some combination of increased dyspnoea, increased sputum volume, increased sputum purulence and worsening lung function. While the average COPD patient experiences 2 - 4 episodes of AECB per year, some patients, particularly those with more severe airway obstruction, are more susceptible to these attacks than others. Bacterial agents appear to be particularly associated with AECB in patients with low lung function and those with frequent episodes accompanied by purulent sputum. Non-typeable Haemophilus influenzae, Streptococcus pneumoniae and Moraxella catarrhalis account for up to 50% of episodes of AECB. Gram-negative bacilli are more likely to occur in patients with more severe lung disease. Antibiotics have been used to ameliorate AECB, to prevent AECB and to prevent the long-term loss of lung function that characterises COPD. Numerous prevention trials have been conducted with fairly consistent results; antibiotics do not lessen the number of episodes of AECB but do reduce the number of days lost from work. Most antibiotic trials have studied the impact of treatment on episodes of AECB and results have been inconsistent, largely due to patient selection and end point definition. In patients with severe airway obstruction, especially in the presence of purulent sputum, antibiotic therapy significantly shortens the duration of symptoms and can be cost-effective. Over the past 50 years, virtually all classes of antimicrobial agents have been studied in AECB. Important considerations include penetration into respiratory secretions, spectrum of activity and antimicrobial resistance. These factors limit the usefulness of drugs such as amoxicillin, erythromycin and trimethoprim-sulfamethoxazole. Extended-spectrum oral cephalosporins, newer macrolides and doxycycline have demonstrated efficacy in clinical trials. Amoxicillin-clavulanate and flouoroquinolones should generally be reserved for patients with more severe disease. A number of investigational agents, including ketolides and newer quinolones, hold promise for treatment of AECB.
- Published
- 2002
- Full Text
- View/download PDF
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