http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
On Minimal Unknotting Crossing Data for Closed Toric Braids
Siwach, Vikash,Prabhakar, Madeti Department of Mathematics 2017 Kyungpook mathematical journal Vol.57 No.2
Unknotting numbers for torus knots and links are well known. In this paper, we present a new approach to determine the position of unknotting number crossing changes in a toric braid such that the closure of the resultant braid is equivalent to the trivial knot or link. Further we give unknotting numbers of more than 600 knots.
Vijayata Sangwan,Sunita Siwach,Pinki Lakra,Mukesh Sangwan,Sanjeet Singh,Rajiv Mahendru 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.6
ObjectiveAfter globally acceptance of planned vaginal birth after cesarean section (VBAC), the mode of induction is still amatter of debate and requires further discussion. We aimed to study obstetric outcomes in post-cesarean patientsundergoing induction of labor with prostaglandin gel compared with patients who developed spontaneous laborpains. MethodsAll patients at 34 weeks or more of gestation with previous one cesarean section eligible for trial of labor aftercesarean section admitted in a labor room within one year were divided in 2 groups. Group one consisted of patientswho experienced the spontaneous onset of labor pains and group 2 consisted of patients who underwent inductionof labor with prostaglandin gel. They were analyzed for maternofetal outcomes. Descriptive statistics, independentsample t-test, and chi-square test were applied using SPSS 20 software for statistical analysis. ResultsBoth groups were comparable in maternal age, parity, and fetal weight, but different in bishop score, mode ofdelivery, and neonatal outcome. Admisson bishop score was 6.61±2.51 in group 1 and 3.15±1.27 in group 2 (P<0.005). In the patients who experienced spontaneous labor, 86.82% had successful VBAC. In the patients with induced labor,64.34% had successful VBAC with an average dose of gel of 1.65±0.75. Both groups had one case each of uterinerupture. The neonatal intensive care unit admission rate was 4.1% in group one and 10.4% in group 2. ConclusionThis study reflects that supervised labor induction with prostaglandin gel in previous one cesarean section patients isa safe and effective option.
Pawan Kumar,Rakesh Kumar Dwivedi,Pawan Kumar,Ravikant Prasad,Praveen Kumar Siwach,Hari Krishna Singh 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.58 No.1
Thin films of La_(0.80)Sr_(0.20)Mn_(1−x)Cu_xO_3 with x = 0.00, 0.04, 0.08, 0.10, 0.15, and 0.20 were deposited on single-crystal LaAlO_3 (100) (LAO) substrates at 250 ± 10 ℃ by using a nebulized spray pyrolysis technique. Structural, surface, and transport characterizations were done by X-ray diffraction (XRD), atomic force microscopy (AFM) and the standard four probe technique, respectively. XRD patterns revealed the formation of single-phase polycrystalline films with a rhombohedral crystal structure. Cu substitution resulted in a uniform decrease in the metal insulator transition (T_(IM)) temperature up to x = 0.10, followed by a drastic decrease in T_(IM) for x = 0.15. Finally, the metal-insulator transition vanished for higher Cu concentrations (x = 0.20) in the observed temperature range. The variation in T_(IM) with the amount of added Cu is explained on the basis of the double exchange mechanism. Cu substitution has been found to perturb the Mn^(3+)-O-Mn^(4+) network and has a strong influence on T_(IM). The variation in resistivity maxima with temperature for different Cu concentrations showed a systematic trend up to x ∼ 0.10. We also explored the electrical conduction at T > T_(IM) in the framework of small polaron hopping in the adiabatic limit. The activation energy showed a strong dependence on the Cu concentration. The maximum magneto-resistance (MR) up to 10%, was observed for x = 0.15 at low temperatures.