Development of diode clamped inverter based STATCOM using SVPWM technique
This paper presents a Diode Clamped Inverter for Static Compensator (STATCOM) using Space Vector Pulse Width Modulation (SVPWM) technique. Static Synchronous Compensator (STATCOM), a Flexible Alternating Current Transmission Systems (FACTS) controller .For a given dc bus voltage the maximum inverter line-to-line voltage generated by the SVPWM scheme is 15.5% higher than that by the SPWM scheme. SVPWM scheme is used to reduce the switching losses, by changing switching states such that only single phase voltage changes every time. SVPWM strategy enables balancing voltages of the dc capacitors without using additional devices multilevel (three level) inverter is used to reduce THD in its ac output voltages in comparison to the two-level inverter. In order to achieve reactive power control, by maintaining unity power factor at the source end feeding reactive load by three level diode clamped SVPWM Inverter which is adapted as STATCOM is employed in this paper. The control strategy for the compensation is based on the instantaneous active and reactive power theory The STATCOM is modelled and simulated in MATLAB Simulink environment. The simulation results of STATCOM under balance voltage condition are presented.
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Development of phthalate analysis methodology by high performance liquid chromatography coupled with diode array detector (HPLC/DAD)
Phthalates are toxic for human beings and their toxicity can be expressed in various forms like teratogenic, mutagenic, estrogenic and carcinogenic effects as well as by endocrine disturbances. The most commonly encountered phthalate molecules in the environment are: DMP, DEP, DnBP, BBP, DisoDP, DALP, DNP), DEHP, and DnOP. In order to assess the health and environmental impacts of phthalates, it is necessary to access these compounds at the molecular level in natural systems, including water. Therefore, our study was devoted to setting up a protocol including phthalate extraction step, followed with a development of a HPLC/DAD analysis methodology, using artificial mixtures of different standard phthalate compounds and water standard reference material we made in our laboratory. As results, we obtained good performance characteristics such as detection limits (ranging 1.1 - 40.0 ng/L), limits of quantification (from 3.75 to 134 ng /L), coefficients of variation (CV) lower than 10 %, and quality control cards showing that the HPLC/DAD methodology we developed was under statistical control and suitable for phthalate determination in water.
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Dr. Ashish Tyagi joined the team of Elixir Editorial Advisory Board from 21st April 2017
We are very happy to announce that from 21st April 2017, Dr. Ashish Tyagi has joined the team of Elixir Editorial Advisory Board. He/She will carry a special responsibility for dealing with manuscripts based on Medical Sciences. Dr. Ashish Tyagi working as Assistant Professor (Forensic Medicine & Toxicology), Shahed Hasan Khan Mewati Govt. Mediacl College, Nuh (Haryana). The appointment of Dr. Ashish Tyagi as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal.
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Dr. E. Nixon Amirtharaj joined the team of Elixir Editorial Advisory Board from 9th June 2018
We are very happy to announce that from 9th June 2018, Dr. E. Nixon Amirtharaj has joined the team of Elixir Editorial Advisory Board. He/She will carry a special responsibility for dealing with manuscripts based on Commerce and Business Administration. Dr. E. Nixon Amirtharaj working as Assistant Professor, Department of Commerce & Business Administration, Faculty of Science & Humanities, SRM University, Vadapalani Campus,Chennai. The appointment of Dr. E. Nixon Amirtharaj as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal. Please send any expressions of interest to elixirpublishers@gmail.com.
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Dr. M.Ramkumar Prabhu joined the team of Elixir Editorial Advisory Board from 16th March 2017
We are very happy to announce that from 16th March 2017, Dr. M.Ramkumar Prabhu has joined the team of Elixir Editorial Advisory Board. He/She will carry a special responsibility for dealing with manuscripts based on Electrical and Communication Engineering. Dr. M.Ramkumar Prabhu working as Professor & Principal at Apollo Priyadarshanam Institute of Technology, Chennai. The appointment of M.Ramkumar Prabhu as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal.
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Drumlore of Opobo Kingdom: A Historical Interpretation
The problem of historical documentation has been with society since the ages. The response of African societies like Opobo to this trend has been to utilize various artistic mediums like drum language as repository of history. Through this approach the various traditions are passed on through time. This research x-rays the contributions of Drumlore to the rich history of Opobo Kingdom.
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Effect of Jacobson’s Progressive muscle relaxation on Diabetes Mellitus II: RCT
The objective of this randomized controlled study was to determine the effects of Jacobson’s progressive muscle relaxation on blood glucose, QOL, Stress, and HbA1c (A1C) and cholesterol in patients with Diabetes mellitus II ( TDM2). Patients with diabetes mellitus II were randomized to either groups. Session of JPMR and sessions of routine management. All sessions were individual. Ttotal of 20 participants were entered, and 19 completed the 3-month protocol. A blood glucose, A1C, Cholesterol were assessed, and WHOQOL and HADS for depression and anxiety were administered pre-randomization and after completion of intervention for both groups. Statistical analysis was done for comparison of both groups. After applying “ t ” test pre relaxation and post relaxation data shows highly significance difference between mean and standard deviation values of all parameters in group A i.e. (p <0.01) This pilot study supports the use of Jacobson’s progressive muscle relaxation in patients with Diabetes mellitus II ( TDM2) Further research is necessary to determine the long-term effects of JPMR Jacobson’s Progressive muscle relaxation can be included in routine management in Diabetes mellitus II.
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Effect of Planting date and spacing on Performance of Marigold (Tagetes erecta Linn) cv. Pusa Narangi under North Bihar Agro-ecological Conditions
A field trial was carried out for two years to ascertain performance of marigold (var. Pusa Narangi) planted at three spacings and on six different dates at bimonthly interval i.e. on first day of March, May, July, September, November and January. The crop planted on 1st March showed early flowering compared to other planting dates. The best performance with respect to flower size, weight and number of flowers per plant was recorded with 1st September planting. The highest number of branches and plant canopy spread were attained with May and July plantings. In both the years wider spacing of 40 cm x 40 cm produced best results with respect to maximum flower diameter, weight of individual flower, and number of flower per plant. However, the total best yield per unit area was higher when the crop was planted on 1st September at 40cm x 20 cm spacing.
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Effects of Strategic Planning on Organizational Performance: A Survey of Law Firms in Mombasa County
The performance of any organization in the competitive economy is highly dependent upon the quality of its management as well as proper implementation of strategic management. Employing a proactive management culture within an organization can enable it to take advantage of opportunities that exist in any business environment. Strategic management is an important tool for any business organization to thrive and prosper. The study aimed at identifying the effects of strategic management practices, specifically planning in the performance of an organization by looking at what planned strategies are currently used by law firms in Mombasa to sustaining growth, effects of innovation and learning on performance of law firms in Mombasa, effects of goal setting as a strategy in the growth of law firms in Mombasa and also identify the effects of implementation strategy on the growth of law firms in Mombasa County. The researcher selected 20 respondents from each law firm making a total of 200 respondents. The study used cross-sectional survey as the design. Questionnaires were the major tools for primary data collection. Data collected was sampled, coded and analyzed with the help of a statistical tool (SPSS v 22).The study findings indicated that strategic planning has a positive correlation with performance. It was clear from the findings that coefficient of determination is 32.4% and that 32.4% of organization performance is attributed and determined by a combination of the four independent factors investigated in this study. The study used the Karl Pearson’s coefficient of correlation (R). and showed a positive correlation between performance and planned strategies giving a correlation figure of 0.253, performance, innovation and learning giving a correlation figure of 0.321, performance and goal setting with a correlation figure of 0.041, and a positive correlation between performance and strategy implementation with a correlation figure of 0170.
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Elements Tracing of Lipsticks Using Laser Induced Breakdown Spectroscopy
In this work different samples of lipsticks were examined using (LIBS) to trace elements in them.
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