165 research outputs found
Magneto-transport characteristics of La1.4Ca1.6Mn2O7 thin film deposited by spray pyrolysis
Polycrystalline thin films of double layer manganite La_1.4Ca_1.6Mn_2O_7
(DLCMO) have been deposited by nebulized spray pyrolysis on single crystal
LaAlO_3 substrates. These single phase films having grain size in the range
70-100 nm exhibit ferromagnetic transition at T_C ~ 107K. The short range
ferromagnetic ordering due to in plane spin coherence is evidenced to occur at
a higher temperature around 225 K. Insulator/semiconductor to metal transition
occurs at a lower temperature T_P ~ 55K. The transport mechanism above T_C is
of Mott`s variable range hopping type. Below T_C the current-voltage
characteristics show non-linear behaviour that becomes stronger with decreasing
temperature. At low temperatures below T_CA ~ 30K a magnetically frustrated
spin canted state is observed. The DLCMO films exhibit resonable low field
magnetoresistance and at 77K the magnetoresistance ratio is ~ 5% at 0.6 kOe and
\~ 13% at 3 kOe.Comment: 14 pages, 7 figure
Effect of season, explants, growth regulators and sugar level on induction and long term maintenance of callus cultures of Ficus religiosa L.
The effects of antioxidant treatments, 2,4-D concentrations and sucrose level were examined in order to optimize the induction and long term maintenance of callus cultures of Ficus religiosa L. from different explants including nodal segments, inter-nodal segments and shoot apices. The explants subjected to incubation for 40 min in antioxidant solution (2% ascorbic acid + 2% citric acid) exhibited maximum percent culture establishment (73.33%). Establishment was reduced when incubation time was longer than 40 min. The explants collected in May and June gave maximum response (100 %). The highest frequency of callus induction (100%) was observed in nodal segments on Murashige and Skoog medium supplemented with 2.26 ΞΌM 2,4-dichlorophenoxyacetic acid and 3% sucrose after an average of 8.38 days. Maximum callus proliferation, resulting in fresh weight of 4.29 g after four weeks of culture, was also observed for callus initiated from nodal segments on the earlier mentioned medium. Higher concentrations of 2,4-D and lower concentrations of sucrose were found to be unfavourable for callus induction as well as proliferation. Callus cultures, initiated from nodal segments, could beΒ successfully maintained in healthy and proliferative form for consecutive nine months on the earlier said medium.Key words: Ficus religiosa L., explants, callus induction, callus proliferation,callus maintenance, in vitro
Comparative study of magnetic and magnetotransport properties of Sm0.55Sr0.45MnO3 thin films grown on different substrates
Highly oriented polycrystalline SSMO thin films deposited on single crystal
substrates by ultrasonic nebulized spray pyrolysis have been studied. The film
on LAO is under compressive strain while LSAT and STO are under tensile strain.
The presence of a metamagnetic state akin to cluster glass formed due to
coexisting FM and antiferromagnetic/charge order (AFM/CO) clusters. All the
films show colossal magnetoresistance but its temperature and magnetic field
dependence are drastically different. In the lower temperature region the
magnetic field dependent isothermal resistivity also shows signature of
metamagnetic transitions. The observed results have been explained in terms of
the variation of the relative fractions of the coexisting FM and AFM/CO phases
as a function of the substrate induced strain and oxygen vacancy induced
quenched disorder.Comment: 21 page
To study the outcome of previous one cesarean pregnancies in a rural tertiary center of Haryana, India
Background: Rising rates of caesarean section is a matter of great concern and TOLAC is an attractive alternative. Analysing outcome of previous one caesarean pregnancies will provide an insight for reducing the caesarean rates and formulating protocols and policies for TOLAC.Methods: A retrospective study of patients of previous one caesarean pregnancy was done from February 2015 to January 2016 and 3 groups were made, ERCS group, failed TOLAC group and successful TOLAC group. The rates of elective repeat caesarean, failed TOLAC, successful TOLAC, maternal complications, neonatal morbidity and mortality in all three groups were studied.Results: There were 5177 total deliveries with 488 (9.43%) previous one caesarean pregnancies. Out of 488 patients 161 (33%) underwent elective repeat caesarean and 327 (67%) underwent trial of labour. Out of 327 patients 234 (71.56%) had a successful TOLAC and 93 (28.44%) had failed TOLAC. Breech (23%) followed by foetal distress (20%) were the most common indications of previous caesarean. Commonest indication of elective repeat caesarean was short interval (33%) and that of failed TOLAC was foetal distress (38.7%) followed by failed induction (23.6%). There were 4 morbidly adherent placentas (0.82%), 1 scar rupture, 3 scar dehiscence, no maternal mortality and 10 neonatal deaths.Conclusions: Previous one caesarean section is not only a risk factor for repeat caesareans and complications like morbidly adherent placenta, uterine rupture but also a financial burden on health facilities. Encouraging the patients for trial of labour and emphasizing the usage of contraception is the need of the hour
ΠΠ»ΠΈΡΠ½ΠΈΠ΅ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΈ Π°Π½Π΄Π΅ΡΡΠ°ΠΉΡΠ΅ΡΠ° Π½Π° ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΠΏΡΠ±Π»ΠΈΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ Π°ΠΊΡΠΈΠΉ ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΠΉ ΠΌΠ°Π»ΠΎΠ³ΠΎ Π±ΠΈΠ·Π½Π΅ΡΠ°
The purpose of the study is to determine the impact of the underwriterβs reputation on shaping the short- and long-term IPO success of small businesses. The paper uses IPO data from 2012 to 2020, three reputable proxy and event-time methodologies to analyze the companyβs performance through market-adjusted excess returns, cumulative abnormal returns and buy & hold returns. Similarly, to mitigate common predispositions, use the calendar-time methodology, Fama-French three-factor model and Carhart four-factor model with high and low reputational groups. The study revealed a significant positive impact of underwritersβ reputations on first-day returns and long-term performance. Overall, the results indicate that, in the longterm, IPOs of Indian small and medium-sized enterprises are over efficient with regard to reputation signals. On the contrary, the calendar-time method and multifactor model indicate the low long-term IPO effectiveness of the SME. According to the authorsβ conclusion, this is the first study to assess the impact of underwriter reputation on business performance using several reputation indicators, the calendar time methodology, and the multi-factor model on the ICPβs Indian IPO platform.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΈ Π°Π½Π΄Π΅ΡΡΠ°ΠΉΡΠ΅ΡΠ° Π½Π° ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΡΠ°ΡΠΊΠΎΡΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΈ Π΄ΠΎΠ»Π³ΠΎΡΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΡΠΏΠ΅Ρ
Π° IPO ΠΌΠ°Π»ΡΡ
ΠΏΡΠ΅Π΄ΠΏΡΠΈΡΡΠΈΠΉ. ΠΡΠΏΠΎΠ»ΡΠ·ΡΡΡΡΡ Π΄Π°Π½Π½ΡΠ΅ ΠΏΠΎ IPO Ρ 2012 ΠΏΠΎ 2020 Π³., ΡΡΠΈ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΎΠΊΡΠΈ ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡ ΡΠΎΠ±ΡΡΠΈΠΉΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ Π΄Π»Ρ Π°Π½Π°Π»ΠΈΠ·Π° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΠΈ ΡΠ΅ΡΠ΅Π· ΡΠΊΠΎΡΡΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ Π½Π° ΡΡΠ½ΠΎΠΊ ΠΈΠ·Π±ΡΡΠΎΡΠ½ΡΡ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΡ, ΠΊΡΠΌΡΠ»ΡΡΠΈΠ²Π½ΡΡ Π°Π½ΠΎΠΌΠ°Π»ΡΠ½ΡΡ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΡ ΠΈ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΡ ΠΎΡ ΠΏΠΎΠΊΡΠΏΠΊΠΈ ΠΈ ΡΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ. ΠΠ½Π°Π»ΠΎΠ³ΠΈΡΠ½ΡΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ Π΄Π»Ρ ΡΠΌΡΠ³ΡΠ΅Π½ΠΈΡ ΠΎΠ±ΡΠΈΡ
ΠΏΡΠ΅Π΄ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΡΡΠ΅ΠΉ Π°Π²ΡΠΎΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡ ΠΊΠ°Π»Π΅Π½Π΄Π°ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ, ΡΡΠ΅Ρ
ΡΠ°ΠΊΡΠΎΡΠ½ΡΡ ΠΌΠΎΠ΄Π΅Π»Ρ Π€Π°ΠΌΡ-Π€ΡΠ΅Π½ΡΠ° ΠΈ ΡΠ΅ΡΡΡΠ΅Ρ
ΡΠ°ΠΊΡΠΎΡΠ½ΡΡ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΠ°ΡΡ
Π°ΡΡΠ° Ρ Π³ΡΡΠΏΠΏΠ°ΠΌΠΈ Ρ Π²ΡΡΠΎΠΊΠΎΠΉ ΠΈ Π½ΠΈΠ·ΠΊΠΎΠΉ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠ΅ΠΉ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΈ Π°Π½Π΄Π΅ΡΡΠ°ΠΉΡΠ΅ΡΠΎΠ² Π½Π° Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΡ ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ Π΄Π½Ρ ΠΈ Π΄ΠΎΠ»Π³ΠΎΡΡΠΎΡΠ½ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ. Π ΡΠ΅Π»ΠΎΠΌ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡ ΠΎ ΡΠΎΠΌ, ΡΡΠΎ Π² Π΄ΠΎΠ»Π³ΠΎΡΡΠΎΡΠ½ΠΎΠΉ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π΅ IPO ΠΈΠ½Π΄ΠΈΠΉΡΠΊΠΈΡ
ΠΌΠ°Π»ΡΡ
ΠΈ ΡΡΠ΅Π΄Π½ΠΈΡ
ΠΏΡΠ΅Π΄ΠΏΡΠΈΡΡΠΈΠΉ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΠΈΠ·Π±ΡΡΠΎΡΠ½ΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠΈΠ³Π½Π°Π»ΠΎΠ². ΠΠ°ΠΏΡΠΎΡΠΈΠ², ΠΌΠ΅ΡΠΎΠ΄ ΠΊΠ°Π»Π΅Π½Π΄Π°ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΈ ΠΌΠ½ΠΎΠ³ΠΎΡΠ°ΠΊΡΠΎΡΠ½Π°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡ ΠΎ Π½ΠΈΠ·ΠΊΠΎΠΉ Π΄ΠΎΠ»Π³ΠΎΡΡΠΎΡΠ½ΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ IPO ΠΠ‘Π. ΠΠ°ΡΠΊΠΎΠ»ΡΠΊΠΎ ΠΈΠ·Π²Π΅ΡΡΠ½ΠΎ Π°Π²ΡΠΎΡΠ°ΠΌ, ΡΡΠΎ ΠΏΠ΅ΡΠ²ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅, Π² ΠΊΠΎΡΠΎΡΠΎΠΌ ΠΈΠ·ΡΡΠ°Π΅ΡΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΈ Π°Π½Π΄Π΅ΡΡΠ°ΠΉΡΠ΅ΡΠΎΠ² Π½Π° ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΈΡ
ΡΠ΅ΠΏΡΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΊΠ°Π»Π΅Π½Π΄Π°ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΈ ΠΌΠ½ΠΎΠ³ΠΎΡΠ°ΠΊΡΠΎΡΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π½Π° ΠΈΠ½Π΄ΠΈΠΉΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ°Π΄ΠΊΠ΅ IPO ΠΠ‘Π
- β¦