Performance of Newtonian filters in detecting gravitational waves from coalescing binaries

Coalescing binary systems are one of the most promising sources of gravitational waves. The technique of matched filtering used in the detection of gravitational waves from coalescing binaries relies on the construction of accurate templates. Until recently filters modelled on the quadrupole or the Newtonian approximation were deemed sufficient. Recently it was shown that post-Newtonian effects contribute to a secular growth in the phase difference between the actual signal and its corresponding Newtonian template. In this paper we investigate the possibility of compensating for the phase difference caused by the post-Newtonian terms by allowing for a shift in the Newtonian filter parameters. We find that Newtonian filters perform adequately for the purpose of detecting the presence of the signal for both the initial and the advanced LIGO detectors.Comment: Revtex 9 pages + 6 figures ( Can be obtained by "anonymous" ftp from 144.16.31.1 in dir /pub/rbs. Submitted to Physical Review D. IUCAA 1

Consumption of a soy drink has no effect on cognitive function but may alleviate vasomotor symptoms in post-menopausal women; a randomised trial

Purpose: Cognitive decline is commonly reported during the menopausal transition, with memory and attention being particularly affected. The aim of this study was to investigate the effects of a commercially available soy drink on cognitive function and menopausal symptoms in post-menopausal women. Methods: 101 post-menopausal women, aged 44–63 years, were randomly assigned to consume a volume of soy drink providing a low (10 mg/day; control group), medium (35 mg/day), or high (60 mg/day) dose of isoflavones for 12 weeks. Cognitive function (spatial working memory, spatial span, pattern recognition memory, 5-choice reaction time, and match to sample visual search) was assessed using CANTAB pre- and post-the 12 week intervention. Menopausal symptoms were assessed using Greene’s Climacteric Scale. Results: No significant differences were observed between the groups for any of the cognitive function outcomes measured. Soy drink consumption had no effect on menopausal symptoms overall; however, when women were stratified according to the severity of vasomotor symptoms (VMS) at baseline, women with more severe symptoms at baseline in the medium group had a significant reduction (P = 0.001) in VMS post-intervention (mean change from baseline score: − 2.15 ± 1.73) in comparison to those with less severe VMS (mean change from baseline score: 0.06 ± 1.21). Conclusions: Soy drink consumption had no effect on cognitive function in post-menopausal women. Consumption of ~ 350 ml/day (35 mg IFs) for 12 weeks significantly reduced VMS in those with more severe symptoms at baseline. This finding is clinically relevant as soy drinks may provide an alternative, natural, treatment for alleviating VMS, highly prevalent among western women

Culture of fishes in cages and pens along the coastal waters of India

The results of culture attempts of milkfish, Chanos chanos, Mugil spp., prawn Penaeus indicus and crab Scylla serrata in enclosures of bamboo splits (thatti), fixed in shallow inshore waters at Tuticorin, are summarized

Seeking tetrameric transition metal phosphonate with a D4R core and organising it into a 3-D supramolecular assembly

The first cubic zinc phosphonate [tBuPO(3)Zn(2-apy)] 4 (1) whose core resembles the D4R SBU of zeolites, has been synthesised from a reaction between zinc acetate, tert- butylphosphonic acid and 2- aminopyridine at room temperature; the X- ray structure determination reveals that the molecules of 1, which crystallise in the tetragonal I4(1)/a space group with crystallographically imposed 4 symmetry, form a 3-D supramolecular assembly aided by N-(HO)-O-... hydrogen bonding

Asymmetric pentameric and tetrameric organooxotin clusters: Insights into their formation through partial dearylation

The reaction between diphenyltin dichloride and 2,6-diisopropylphenylphosphate (dippH(2)) in ethanol affords a highly asymmetric pentameric organotin cluster, [Sn5Ph7(mu(3)-dipp)(4)(mu-dippH)(mu(3)-O)(mu-OEt)(EtOH)(H2O)Cl] center dot H2O (1), that contains Ph-, EtO-, Cl-, O-2(-), ROPO32-, ROPO3H-, OH2, and EtOH ligands. The same reaction when carried out in iPrOH, under otherwise identical conditions, results in the formation of another pentamer, [Sn5Ph7(mu(3)-dipp)(4)(mu-dippH)(mu(3)-O)(mu-OH)(iPrOH)(H2O)Cl] center dot iPrOH (2). Change of the phosphate ligand to sterically less bulky 2,6-dimethylphenylphosphate in the above reaction carried out in ethanol results in the formation of a tetrameric cluster, [Sn4Ph5(mu(3)-dmpp)(2)(mu-dmpp)(mu-dmppH)(2)(mu(3)-O)(mu-OEt)(EtOH)] center dot EtOH (3). Isolation of 3 provides useful insights into the formation of the pentamers 1 and 2. Compounds 1-3 have been characterized by means of their analytical data, IR, and multinuclear NMR (H-1, P-31, and Sn-119) spectral data. The solid-state structures of 1-3 have been determined by X-ray diffraction studies

Assembling metal phosphonates in the presence of monodentate-terminal and bidentate-bridging pyridine ligands. Use of non-covalent and covalent-coordinate interactions to build polymeric metal-phosphonate architectures

The cubic transition metal phosphonates [(BuPO3M)-Bu-t(2-apy)](4) (M= Zn (1), Co (2), whose core resembles the D4R SBU of zeolites, have been synthesized from a reaction between the corresponding metal acetate, tert-butylphosphonic acid and 2-aminopyridine (2-apy) at room temperature. X-Ray structure determination reveals that the molecules of 1 and 2, which crystallize in the tetragonal I4(1)/a space group with crystallographically imposed (4) over bar symmetry, form a 3-D supramolecular assembly aided by N-H center dot center dot center dot O hydrogen bonding. When the same reaction was carried out by using a bridging bidentate Lewis base such as 4,4'-bipyridine, insoluble precipitate is obtained for both zinc and cobalt. In the case of other metal salts such as copper, manganese and nickel, however, one-dimensional polymeric compounds such as [M((BuPO3H)-Bu-t) 2(4,4 '-bipy)(H2O)(2)](n) (M= Cu (3), Mn (4)), [{Ni(4,4 '-bipy)(H2O)(4)}-{ (BuPO3H)-Bu-t}(2){H2O}](n) (5) have been isolated. The solid-state structures of 3-5 have been determined by single crystal X-ray diffraction studies. Compounds 3 and 4 are isostructural and crystallize in the triclinic P (1) over bar space group with two phosphonate ligands coordinated to the metal centers in a [1.100] fashion, whereas in the case of compound 5, the polymeric backbone is formed by Ni-4,4 '-bipy units and the phosphonate anions show no bonding interaction to the metal. The 1-D polymeric chains of 3-5 organize in the solid-state as 3-D supramolecular assemblies with the aid of extensive hydrogen bonding interaction between coordinated water molecules and P-OH or P=O groups of the phosphonate ligands