Dvali-Gabadadze-Porrati Cosmology in Bianchi I brane

The dynamics of Dvali-Gabadadze-Porrati Cosmology (DGP) braneworld with an anisotropic brane is studied. The Friedmann equations and their solutions are obtained for two branches of anisotropic DGP model. The late time behavior in DGP cosmology is examined in the presence of anisotropy which shows that universe enters a self-accelerating phase much later compared to the isotropic case. The acceleration conditions and slow-roll conditions for inflation are obtained

Silent meningioma: a cause of quadriperesis in total knee arthroplasty

Total knee arthroplasty (TKA) is a treatment for end stage osteoarthritis.  Majority of them in the older age group with associated co-morbidities and increased the risk for stroke. Asymptomatic meningiomas may become symptomatic and presents with variable symptoms depending on the size and location of the tumour. We report a case of a 58 years old lady who underwent bilateral TKA under combined spinal epidural anaesthesia with an uneventful post-operative course with post-operative analgesia. Patient developed dysphasia and weakness in upper and lower limbs. Following computed tomography of the brain revealed a meningioma in the falx region. Patient treated with steroid and underwent elective surgery for meningioma without any complications. Asymptomatic brain tumours can become symptomatic after surgery and urgent initiation of neurologic evaluation and strong recommendation to initiate intracranial pressure management oriented therapy in time.

Direct observation of 4+ to 2+ gamma transition in 8Be

The low lying states in $^8$Be are believed to have a two-alpha cluster structure and hence a large intrinsic quadrupole deformation. An earlier calculation showed a large collective enhancement in gamma transition probability between the low lying states leading to a 4$^+$ to 2$^+$ gamma branch of $\sim10^{-7}$ and a resonant radiative cross section of 134 nb for the $\alpha+\alpha$ entrance channel. We report here the first experimental evidence for this transition through a $\gamma-\alpha-\alpha$ coincidence measurement in the reaction $^4$He($\alpha,\alpha \gamma$)$^4$He using a gas target. The measured cross sections on and off the 4$^+$ resonance are 165 $\pm$ 41 (stat) $\pm$35 (sys) nb and 39 $\pm$ 25 (stat) $\pm$7 (sys) nb, respectively.Comment: Total 4 pages, 4 figures, in RevTeX format, submitted to PR

Tachyonic potential in Bianchi type-I universe

Motivated from recent string theoretic results, a tachyonic potential is constructed for a spatially homogeneous and anisotropic background cosmology.Comment: 5 pages,LATEX,Typos in the text corrected, more references adde

Altered Ca(2+ )homeostasis in polymorphonuclear leukocytes from chronic myeloid leukaemia patients

BACKGROUND: In polymorphonuclear leukocytes (PMNL), mobilization of calcium ions is one of the early events triggered by binding of chemoattractant to its receptors. Besides chemotaxis, a variety of other functional responses are dependent on calcium ion mobilization. PMNL from chronic myeloid leukaemia (CML) patients that were morphologically indistinguishable from normal PMNL were found to be defective in various functions stimulated by a chemoattractant – fMLP. To study the mechanism underlying defective functions in CML PMNL, we studied calcium mobilization in CML PMNL in response to two different classical chemoattractants, fMLP and C5a. RESULTS: Release of calcium estimated by flow cytometry and spectrofluorimetry using fluo-3 as an indicator showed that the [Ca(2+)](i )levels were lower in CML PMNL as compared to those in normal PMNL. But, both normal and CML PMNL showed maximum [Ca(2+)](i )in response to fMLP and C5a at 10 sec and 30 sec, respectively. Spectrofluorimetric analysis of the total calcium release in chemoattractant treated PMNL indicated more and faster efflux of [Ca(2+)](i )in CML PMNL as compared to normal PMNL. CONCLUSION: Fine-tuning of Ca(2+ )homeostasis was altered in CML PMNL. The altered Ca(2+ )homeostasis may contribute to the defective functions of CML PMNL

3-(6-Methyl-2-pyrid­yl)-2-phenyl-3,4-dihydro-1,3,2-benzoxaza­phosphinine 2-oxide

In the title compound, C19H17N2O2P, the six-membered 1,3,2-oxaza­phosphinine ring adopts a boat conformation with the phosphoryl O atom in an equatorial position. The dihedral angle between the 6-methyl-2-pyridyl and phenyl groups is 75.5 (1)°. These substituents are trans to each other, and are oriented at angles of 57.2 (1) and 74.8 (1)°, respectively, to the benzene ring. The crystal structure is stabilized by intra- and inter­molecular hydrogen bonds. The phosphoryl O atom participates in inter­molecular C—H⋯O inter­actions with the neighbouring mol­ecules, forming centrosymmetric R 2 2(14) dimers

Optimal Design of Hybrid Microgrid for Off Grid Villages

The Microgrid is a small scale transmission and distribution of power. Microgrid is mostly implemented in the rural villages and remote places which are not accessed by the normal conventional grid. The generation capacity of the micro grids will be less compared to the conventional grids as the demand is also significantly less. The renewable energy source acts as the major generation source for the microgrid when compared to the non-renewable sources. Some of the renewable sources which are used for generation in micro grids are wind, solar, small hydro, biomass etc. Since the renewable energy sources are not instantaneous for the microgrid to supply the load more efficiently and continuously the hybrid sources are required. In hybrid sources two different types of sources are considered in which one will be the conventional source and another will be the non-conventional source. The present work describes the design of a hybrid microgrid system for a remote off grid village in Myanmar. The hybrid microgrid consists of locally available primary energy source (photovoltaic) and diesel generator as a backup source. The main objective of the project is to design a system based on the locally available renewable energy source to electrify the village. To design the system, the energy requirement of the village, the current energy consumption and future demand is estimated through door to door survey. Based on the survey data the system is designed and installed

A High Throughput Workflow Environment for Cosmological Simulations

The next generation of wide-area sky surveys offer the power to place extremely precise constraints on cosmological parameters and to test the source of cosmic acceleration. These observational programs will employ multiple techniques based on a variety of statistical signatures of galaxies and large-scale structure. These techniques have sources of systematic error that need to be understood at the percent-level in order to fully leverage the power of next-generation catalogs. Simulations of large-scale structure provide the means to characterize these uncertainties. We are using XSEDE resources to produce multiple synthetic sky surveys of galaxies and large-scale structure in support of science analysis for the Dark Energy Survey. In order to scale up our production to the level of fifty 10^10-particle simulations, we are working to embed production control within the Apache Airavata workflow environment. We explain our methods and report how the workflow has reduced production time by 40% compared to manual management.Comment: 8 pages, 5 figures. V2 corrects an error in figure

Open Primary Button Versus Laparoscopic Percutaneous Endoscopic Gastrostomy: Results From a Case-control Study.

OBJECTIVES: Open primary balloon gastrostomy (PBG) presents a potential alternative to percutaneous endoscopic gastrostomy (PEG) in children as it obviates the need for change under general anaesthetic; however, the complication profile of PBG compared to PEG is not well defined. Previous series comparing the two have been hampered by the groups not being equivalent. Our paediatric surgical centre has offered PBG as an alternative PEG since 2014. We used a matched case-control study to compare outcomes for PBG and PEG. METHODS: Patients undergoing PBG were used as "cases" and matched 1:3 by age and diagnosis to patients undergoing PEG, demographics, and clinical data as "controls." Primary outcome was rate of complications classified according to Clavien-Dindo (I-V). Secondary outcomes included time to feed and length of stay. Non-parametric, categorical and multivariate logistic regression analyses were performed. Data here presented as median with interquartile range (IQR). RESULTS: We included 140 patients (35 PBG:105 PEG). The 2 groups were comparable for sex, weight at surgery, and follow-up duration. Median operative time was longer for PBG (43 min [IQR 36.5-61.5] vs 27.5 min [18.25-47.75], P < 0.001). Multivariate analysis demonstrated a statistically significant, higher incidence of symptomatic granulation tissue in PBG (10 [29%] vs 6 [6%], P = 0.0008), this remained significant on multivariate analysis (OR 7.56 [2.33-23.5], P = 0.001), no other complication remained significant. The overall complication rate was not statistically different. CONCLUSIONS: PBG and PEG have similar overall complication rates; however, PBG appears to have a higher incidence of granulation tissue. This observation must be weighed against the need for further general anaesthetic which is not insignificant in medically complex children