1,004 research outputs found
Definition of seismic and tsunami hazard scenarios by exploiting EU-India Grid e-infrastructures
No full textSeismic hazard assessment can be performed following a neo-deterministic approach (NDSHA), which allows to give a realistic description of the seismic ground motion due to an earthquake of given distance and magnitude. The approach is based on modelling techniques that have been developed from a detailed knowledge of both the seismic source process and the propagation of seismic waves. This permits us to define a set of earthquake scenarios and to simulate the associated synthetic signals without having to wait for a strong event to occur. NDSHA can be applied at the regional scale, computing seismograms at the nodes of a grid with the
desired spacing, or at the local scale, taking into account the source characteristics, the path and local geological and geotechnical conditions. Synthetic signals can be used as seismic input in subsequent engineering analyses aimed at the computation of the full non-linear seismic response of the structure or simply the earthquake damaging potential. The same approach can be applied to tsunami hazard assessment: for a specific coastal area one has to characterize the
seismic sources and select the earthquake scenarios that can drive the hazard; afterward the associated synthetic tsunamigrams are computed using the modal method. Massive parametric tests, to explore the influence not only of deterministic source parameters and structural models
but also of random properties of the same source model, enable realistic estimate of seismic hazard and their uncertainty. The use of the EU-India Grid infrastructure allows to conduct massive parametric tests for evaluating the uncertainties in the computed hazard maps. In
the framework of cooperation project between three Italian partners (DMG, University of Trieste; ICTP SAND Group; CNR/IOM uos Democritos) and two Indian partners (ISR, Gujarat; CSIR C-MMACS, Bangalore) a system will be set up for the scenario-based characterization of the seismic and tsunami hazard, integrated with the e-infrastructures of the project EU-India Grid
Library automation of Al-Barkaat Institute of Management Studies, Aligarh with the help of Alice for Window (AFW) library software
No full textThis article was written, when first author Mr. Parvez Ahmed, was working in India. Presently he is working as a Web Librarian in Portal and e-Services Department, King Saud University.This case study is the practical experience of the first author of this article. he has tried to cover all the areas of automation
Layer-by-Layer Assembled Heteroatom-Doped Graphene Films with Ultrahigh Volumetric Capacitance and Rate Capability for Micro-Supercapacitors
No full textWu Z-S, Parvez K, Winter A, et al. Layer-by-Layer Assembled Heteroatom-Doped Graphene Films with Ultrahigh Volumetric Capacitance and Rate Capability for Micro-Supercapacitors. Advanced Materials. 2014;26(26):4552-+.Highly uniform, ultrathin, layer-by-layer heteroatom (N, B) co-doped graphene films are fabricated for high-performance on-chip planar micro-supercapacitors with an ultrahigh volumetric capacitance of similar to 488 F cm(-3) and excellent rate capability due to the synergistic effect of nitrogen and boron co-doping
Novel Anticounterfeiting Solution Based on 2D Materials Produced by Electrochemical Exfoliation
No full textThis work demonstrates the use of 2D materials (2DMs) as identification tags by exploiting their unique shape. Electrochemical exfoliation enables the production of large quantities of optically accessible 2DMs with diverse morphology and large lateral sizes up to 20 μm. Image processing techniques are used to facilitate shape identification and matching within a dataset of 500 unique nanosheets. Rotational and translation invariant shape matching with no false positive matches between over 100 000 unique shape pairings is shown. The approach enables individual nanosheets to be deposited onto products, such as packaging of luxury goods, pharmaceuticals, banknotes, etc., as a unique seal of authenticity. Quick inspection of the nanoscale tag by optical microscopy allows the shape to be compared against the genuine dataset, enabling unique identification. The optical features of 2D materials, such as Raman and/or photoluminescence signals can be used as an additional chemical fingerprint, making the anticounterfeiting solution very robust
In vitro activity of artemisone against different strains of Helicobacter pylori
No full textArtemisinin is a sesquiterpene lactone endoperoxide, extracted from Artemisia annua. Beside antimalarial property, artemisinin and its analogues have been shown to possess immunomodulatory and antitumor effects. Recently, it was reported that artemisinin and a series of new derivates, are also active against Helicobater pylori. The aim of this study was to evaluate the antibacterial activity of artemisone, a new semi synthetic derivative of artemisinin, against both susceptible and resistant strains of Helicobacter pylori isolated in Lombardia region, Italy. Artemisone is a second-generation artemisinin that has shown improved pharmacokinetic properties including longer half-life and lower toxicity. The compound was tested against 25 clinical isolates and one reference strain of H. pylori using the broth microdilution methodology. Furthermore, in order to verify the rate and extent of killing of H. pylori by the artemisone, bactericidal kinetic was also performed against the reference strain ATCC 43504. The inhibitory concentrations of artemisone were similar to the bactericidal ones, with values ranging from 0.25 to 0.5 μg/ml. Independently from their susceptibility to metronidazole or chlaritromycin, 90% of the investigated strains were inhibited in their growth at 0.5 μg/ml. A decrease of 4-log10 in cell count was observed after 48 h at 0.5 μg/ml. These results show that artemisone has a promising antibacterial properties against H. pylori and, therefore, in combination with antibiotics, could represent a novel strategy for the treatment of the infection especially in cases of multiresistance
Forman Christian College Lahore
No full textEditorial. pp. 3-4; Speech-President's Speech. pp. 5-6; Speech-Address of Welcome to Field Marshal Mohammad Ayub Khan on the Forman Christian College Centenary Celebrations. pp. 7-11; Mahmood Parvez-Poetry-Recollection of Life. pp. 12; Abdul Majid-Article-Forman College in Early Twenties. pp. 13-16; Mwangwindi Mwaikinda-The War: Felt from Abroad. pp. 17-20; Arshad Syed Karim-Article-The Black Muslims in America. pp. 21-29; Ratliff, Alice-Poetry-To a Peacock. pp. 30; Muhammad Ramzan Malik-Article-Modern Art. pp. 31-32; Rumman Faruqi-Article-Pop Art in Coke Culture. pp. 33-35; Vernon Otto-A Letter. pp. 36; Faqir Muhammad Mian-Article-Economic Impact of our Culture. pp. 37-39; Z. Bede, S. K. Fazal, Farooq Rana-Poetry-After Eden. pp. 40-44; Sikander Wasty-Article-Budhism: its Impact in History. pp. 45-48; Z. Bede-Story-Gake and the Nob. pp. 49-56; Mwangwindi Mwaikinda-Non-Confusing Refusing. pp. 57-60; The Periscope. pp. 61-64; Obituary Note. pp. 65-66; Mahmood Parvez Alam-Poetry-Lines. pp. 67-68; Namdar Khan-Speech-Convocation Address. pp. 69-74; Mohammad Salman Ahmad-Article-Palestine-The Arab Canceroid. pp. 75-77; Omar Mohammad Khan-From L.O.S. with Love. pp. 78-80; Folio [Urdu]. 85 p
Primary motor cortex long-term plasticity in multiple system atrophy
No full textIn humans, intermittent and continuous theta-burst stimulation (iTBS and cTBS) elicit long-term changes in motor-evoked potentials (MEPs) reflecting long-term potentiation (LTP)- and depression (LTD)-like plasticity in the primary motor cortex (M1). In this study, we used TBS to investigate M1 plasticity in patients with MSA. We also assessed whether responses to TBS reflect M1 excitability as tested by short-interval intracortical inhibition (SICI), intracortical facilitation (ICF), short-interval intracortical facilitation (SICF), and the input/output curves. We studied 20 patients with MSA and 20 healthy subjects (HS). Patients were clinically evaluated with the Unified Multiple System Atrophy Rating Scale. The left M1 was conditioned with TBS. Twenty MEPs were recorded from the right first dorsal interosseous muscle before TBS and 5, 15, and 30 minutes thereafter. In a subgroup of 10 patients, we also tested MEPs elicited by SICI, ICF, SICF, and input/output curves, before TBS. Between-group analysis of variance showed that at all time points after iTBS MEPs increased, whereas after cTBS they decreased only in HS. In both subgroups tested, patients with predominant parkinsonian and cerebellar features, iTBS and cTBS left MEPs unchanged. MSA patients had reduced SICI, but normal ICF, SICF, and input/output curves. No correlation was found between patients' clinical features and responses to TBS and M1 excitability variables. These findings suggest impaired M1 plasticity in MSA. (c) 2013 International Parkinson and Movement Disorder Societ
Man up: stories of Parvez and Muna
No full textA collection of linked comic short stories about a young Muslim couple, tracing their relationship from their traditional courtship to the early parenthood.M.F.A.by Musa Syee
On colouring integers avoiding t-AP distance-sets
No full textIn this paper, we investigate
the structure of sets with bounded number of pairs with certain gaps.The author would like to thank Hunter Snevily (deceased) for suggesting the problem, Clement Lam and Srecko Brlek for their support,and Andalib Parvez for carefully reading the manuscript
Inkjet printed 2D-crystal based strain gauges on paper
No full textWe present an investigation of inkjet printed strain gauges based on two-dimensional (2D) materials. The technology leverages water-based and biocompatible inks to fabricate strain measurement devices on flexible substrates such as paper. We demonstrate that the device performance and sensitivity are strongly dependent on the printing parameter (i.e., drop-spacing, number of printing passes, etc.). We show that values of the Gauge Factor up to 125 can be obtained, with large sensitivity (>20%) even when small strains (0.3%) are applied. Furthermore, we provide preliminary examples of heterostructure-based strain sensors, enabled by the inkjet printing technology.</p
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