822 research outputs found
Mentally Differently: Catch Them Young
Get PDFWorld Mental Health Day Guest Comment By Dr. Mayank Jai
Initiating the Battle against Cancer (World Cancer Day Editorial Comment)
Get PDFWorld Cancer Day Editorial Comment by Dr. Mayank Gahlo
Effect of Asymmetric Infills on Seismic Performance of Reinforced Concrete Frame Buildings
No full textThis dataset stores the supporting data for the manuscript titled "Effect of Asymmetric Infills on Seismic Performance of Reinforced Concrete Frame Buildings". The manuscript is under review in the Journal of Earthquake Engineering.
Abstract:
"The torsion due to asymmetric placement of unreinforced masonry (URM) infills is often unnoticed because the stiffness and strength of the infills are usually ignored during design. This study estimates the effect of asymmetric placement of infills on the performance of 8-story reinforced concrete (RC) buildings designed for different code levels. Multiple stripe analysis (MSA) is used to assess the performance. The adverse effects of the infills generally overshadow the torsion introduced by the asymmetric layout, leading to consistently poor performance in buildings with more infilled frames. At higher intensities, most of the eccentricity is lost due to infill damage.
Data for: Effect of Asymmetric Infills on Seismic Performance of Reinforced Concrete Frame Buildings
No full textThis dataset stores the supporting data for the manuscript titled "Effect of Asymmetric Infills on Seismic Performance of Reinforced Concrete Frame Buildings". The manuscript is under review in the Journal of Earthquake Engineering. Abstract: "The torsion due to asymmetric placement of unreinforced masonry (URM) infills is often unnoticed because the stiffness and strength of the infills are usually ignored during design. This study estimates the effect of asymmetric placement of infills on the performance of 8-story reinforced concrete (RC) buildings designed for different code levels. Multiple stripe analysis (MSA) is used to assess the performance. The adverse effects of the infills generally overshadow the torsion introduced by the asymmetric layout, leading to consistently poor performance in buildings with more infilled frames. At higher intensities, most of the eccentricity is lost due to infill damage.
Optimization of V-Blast and C-Blast Using Genetic Algorithm
No full textME, ECEDMultiple Input Multiple Output (MIMO) systems have been extensively studied in the context of wireless communications, promising both increased capacity and link level reliability. MIMO systems uses an array of transmit and receive antennas for enormous gains in spectral efficiency by exploiting a rich multipath fading environment.
Following the proposal by Foschini at Bell Labs, a family of architectures emerged for systems employing multiple antenna arrays at transmit and receive end, collectively known as Bell Labs Layered Space-Time (BLAST) architectures. BLAST (Bell Labs Layered Space-Time) is a multiple antenna communication scheme to improve the performance of wireless communication by increasing data rate. This dissertation gives a proposed method to increase the throughput by 10% if we use the combination of V-BLAST and C-BLAST. This dissertation reviews the essential aspects of two of the best known members of the family, namely C-BLAST, V-BLAST. V-BLAST improves the performance at the cost of increased computational complexity. In V-BLAST, instead of jointly detecting all the transmit signals, the detection is done iteratively. At each symbol time, for each subcarrier, it first detects the strongest layer (depending on the channel matrix) and then cancels the effect of this strongest layer from each of the received signals, considered as interference. The detection continues with the strongest remaining layer, and so on.
An extension of the open-loop V-BLAST transmission structure referred to as the closed-loop V-BLAST. The closed-loop V-BLAST differs from the open-loop V-BLAST in respect that there exists a feedback channel that enables the receiver to send to the transmitter the optimized transmit adaptation based on the instantaneous channel realization, which is assumed to be perfectly known at the receiver.
Further, improvement can be done in the performance characteristics like bit error rate , SNR and power allocation for V-BLAST and C-BLAST by using genetic algorithms which based upon creation of top point in the population which reaches an optimum solution by creating a population of points at every iteration. So if genetic algorithm is used, throughput increases and bit error rate decreases. On the other hand if genetic algorithm is not used in combination with V- BLAST then throughput will decrease and
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bit error rate will go high. Finally, discussion of results has been explained in end of the dissertation
Controlling Epitaxial GaAs[subscript x]P[subscript 1-x]/Si[subscript 1-y]Ge[subscript y] Heterovalent Interfaces
No full textHigh quality epitaxial growth of GaAsP on SiGe templates would allow access to materials and band gaps that would enable novel, high performance devices on Si. However, GaAsP/SiGe interface engineering has proved to be very complex. In this paper, we explore the effects of strain at the heterovalent interface between GaAsP and SiGe alloys on the overall defect morphology.United States. Army Research Office (Grant W911NF-09-1-0222
Fluorescent proteins: Crystallization, structural determination, and nonnatural amino acid incorporation
Get PDFFluorescent proteins have revolutionized cell biology and cell imaging through their use as genetically encoded tags. Structural biology has been pivotal in understanding how their unique fluorescent properties manifest through the formation of the chromophore and how the spectral properties are tuned through interaction networks. This knowledge has in turn led to the construction of novel variants with new and improved properties. Here we describe the process by which fluorescent protein structures are determined, starting from recombinant protein production to structure determination by molecular replacement. We also describe how to incorporate and determine the structures of proteins containing non-natural amino acids. Recent advances in protein engineering have led to reprogramming of the genetic code to allow incorporation of new chemistry at designed residue positions, with fluorescent proteins being at the forefront of structural studies in this area. The impact of such new chemistry on protein structure is still limited; the accumulation of more protein structures will undoubtedly improve our understanding and ability to engineer proteins with new chemical functionality
The PRK/Rubisco shunt strongly influences Arabidopsis seed metabolism and oil accumulation, affecting more than carbon recycling
Get PDFISSN:1040-4651ISSN:1531-298XISSN:1532-298XISSN:1531-298XISSN:1532-298
Interaction of a railway tunnel with a deep slow landslide in clay shales
No full textThe Varco d’Izzo landslide system (Basilicata Region, Italy) develops at the suburbs of the city of Potenza, capital of the region, and is crossed by two transport infrastructures of local importance: the national highway Basentana and the national railway line. This paper is focused on the effects of slope movements on the railway tunnel which was built in the accumulation of an earthflow of the landslide system. The earthflow displacements were slow but continuous in the monitoring period 2005-2015 and in the order of one to several cm/year. They have led, not far from the railway tunnel area, to the eviction of a house, the dismantling of a pedestrian bridge, damages to roads and other structures. The tunnel was completely re-built in 1992 between two rows of piles, by the cut-and-cover method, after the previous tunnel had suffered severe damage due to the landslide. Available inclinometer data seem to suggest that, locally, the tunnel with its piles is hindering landslide displacements. In fact, measurements carried out in the vicinity of the tunnel, upslope from it, do not show a slip surface crossing the piles. On the other hand, landslide displacements are observed both farther, upslope from the tunnel, and downslope from it. The resultant of earth pressures acting on the tunnel is thus, probably, increasing with time. The distribution of landslide displacements around the tunnel until recent years is herein analyzed. Results of site surveys are reported. The causes of the current state of deformation of the tunnel, which was evaluated by laserscanning, are examined with the help of simplified calculations and FEM simulations
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