Islanding is one of the challenging task for microgrid system. There are various types of islanding methods. Local methods also classified as passive, active, and hybrid methods. Passive islanding ...methods are easy to execute, cheaper for multi-distributed generation (DG) system but have large nondetection zone (NDZ). A very few active and hybrid methods were tested on multi-DG system till now. In this article, a new method is proposed for DGs connected in parallel considering a recursive least square (RLS) algorithm at point of common coupling for islanding. There are various parameters like voltage, current, frequency, impedance, harmonics, etc., used to detect the islanding. Here a frequency of active frequency drift (AFD) current with RLS is considered as a variable parameter. Further comparative analysis was done between conventional active and passive methods with the proposed method. In the proposed method, a variation of estimated frequency signal generates the tripping signal in fast manner as compare to other methods. The simulation results are analyzed based on MATLAB software and verified the same by implementing prototype hardware experimental setup. The analysis shows that the estimation of frequency for current of AFD with RLS approach is more suitable for islanding during zero power mismatch condition.
Myiasis: A Boon or a Bane? Bhalerao, A; Somalwar, S; Kulkarni, S ...
Journal of SAFOG (South Asian Federation of Obstetrics and Gynecology),
08/2012, Letnik:
4, Številka:
2
Journal Article
Odprti dostop
ABSTRACT
Myiasis is known to man since ages and has always been considered bane due to its prevalence in unhygienic conditions. But nowadays it is considered as a boon as it is being tried in ...treatment of nonhealing wounds.
How to cite this article
Kulkarni S, Joshi S, Bhalerao A, Chopde Y, Somalwar S. Myiasis: A Boon or a Bane? J South Asian Feder Obst Gynae 2012;4(2):116-117.
ABSTRACT
Unilateral twin ectopic is a rare condition. Only 100 cases reported till date in the literature. A 34-year-old woman having secondary infertility reported to emergency with amenorrhea of ...one and half months and pain in abdomen. Her urine pregnancy test was positive and ultrasonography showed multiple (twin) ectopic gestational sacs in left adenexa. Color Doppler showed ring of fire sign encircling both the gestational sacs suggestive of twin ectopic pregnancy (diamniotic-dichorionic) in left adenexa. Exploratory laparotomy confirmed the diagnosis.
Evidence is reported for a narrow structure near the $J/\psi\phi$ threshold in exclusive $B^+\to J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96 \TeV$. A signal of ...$14\pm5$ events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of $2.7 \ifb$, collected by the CDF II detector. The mass and natural width of the structure are measured to be $4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc$ and $11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc$.
We report the observation of B{sub s}{sup 0}-B{sub s}{sup 0} oscillations from a time-dependent measurement of the B{sub s}{sup 0}-B{sub s}{sup 0} oscillation frequency {delta}m{sub s}. Using a data ...sample of 1 fb{sup -1} of pp collisions at {radical}(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic B{sub s} decays, 3100 partially reconstructed hadronic B{sub s} decays, and 61 500 partially reconstructed semileptonic B{sub s} decays. We measure the probability as a function of proper decay time that the B{sub s} decays with the same, or opposite, flavor as the flavor at production, and we find a signal for B{sub s}{sup 0}-B{sub s}{sup 0} oscillations. The probability that random fluctuations could produce a comparable signal is 8x10{sup -8}, which exceeds 5{sigma} significance. We measure {delta}m{sub s}=17.77{+-}0.10(stat){+-}0.07(syst) ps{sup -1} and extract vertical bar V{sub td}/V{sub ts} vertical bar =0.2060{+-}0.0007({delta}m{sub s}){sub -0.0060}{sup +0.0081}({delta}m{sub d}+theor)
Measurement of the K L Charge Asymmetry Alavi-Harati, A.; Alexopoulos, T.; Arenton, M. ...
Physical review letters,
05/2002, Letnik:
88, Številka:
18
Journal Article
We report the observation and measurement of the mass of the bottom, strange baryon Xi-_b through the decay chain Xi-_b --> J/psi Xi-, where J/psi --> mu+ mu-, Xi- --> Lambda pi+-, and Lambda --> p ...pi+-, and Lambda --> p pi+-. Evidence for observation is based on a signal whose probability of arising from the estimated background is 6.6 x 10-15, or 7.7 Gaussian standard deviations. The Xi-_b mass is measured to be 5792.9 +/- 2.5 (stat.) +/-1.7 (syst.) MeV/c2.
PDF
