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Search Results: 1 - 10 of 434046 matches for " S. H. Sindhi "
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Threat and Stretegic control of Dengue infection in Man
Veterinary World , 2008,
Abstract: [Veterinary World 2008; 1(5.000): 155-156]
Fetal dystocia due to dorso-pubic position and postural defects in a Jenny: A case report
P. M. Chauhan,S. H. Sindhi,K. B. Thakor
Veterinary World , 2013, DOI: 10.5455/vetworld.2013.116-117
Abstract: Dystocia in Jenny is a very rare and occur occasionally, about 1 to 4 % of foaling. A present case of fetal dystocia in seven year old jenny has been reported due to dorso-pubic position and malpostures (includes left shoulder flexion and flexed neck). Fetus was corrected in normal position and posture through application of mutational operation and removeed dead male fetus through vagina after applying the proper traction. Then, she was treated with fluid therapy, antibiotic, analgesic, tetanus toxoid, nutrients etc. and discharged from the veterinary dispensary with advising the owner for post-operative care and management for further few days. [Vet World 2013; 6(2.000): 116-117]
Scaling Laws for Plasma Focus Machines from Numerical Experiments  [PDF]
Energy and Power Engineering (EPE) , 2010, DOI: 10.4236/epe.2010.21010
Abstract: Numerical experiments carried out systematically using the Lee Model code unveil insightful and practical wide-ranging scaling laws for plasma focus machines for nuclear fusion energy as well as other applications. An essential feature of the numerical experiments is the fitting of a measured current waveform to the computed waveform to calibrate the model for the particular machine, thus providing a reliable and rigorous determination of the all-important pinch current. The thermodynamics and radiation properties of the resulting plasma are then reliably determined. This paper provides an overview of the recently published scaling laws for neutron (Yn) and neon soft x-ray, SXR (Ysxr) yields: Yn = 3.2x1011 Ipinch4.5; Yn = 1.8x1010 Ipeak3.8; Ipeak (0.3 to 5.7), Ipinch (0.2 to 2.4) in MA. Yn~E02.0 at tens of kJ to Yn~E00.84 at MJ level (up to 25MJ) and Ysxr = 8.3x103 Ipinch3.6; Ysxr = 6x102 Ipeak3.2; Ipeak (0.1 to 2.4), Ipinch (0.07 to1.3) in MA. Ysxr~E01.6 (kJ range) to Ysxr~E00.8 (towards MJ).
A New Neural Network Structure: Node-to-Node-Link Neural Network  [PDF]
S. H. Ling
Journal of Intelligent Learning Systems and Applications (JILSA) , 2010, DOI: 10.4236/jilsa.2010.21001
Abstract: This paper presents a new neural network structure and namely node-to-node-link neural network (N-N-LNN) and it is trained by real-coded genetic algorithm (RCGA) with average-bound crossover and wavelet mutation [1]. The N-N-LNN exhibits a node-to-node relationship in the hidden layer and the network parameters are variable. These characteristics make the network adaptive to the changes of the input environment, enabling it to tackle different input sets distributed in a large domain. Each input data set is effectively handled by a corresponding set of network parame-ters. The set of parameters is governed by other nodes. Thanks to these features, the proposed network exhibits better learning and generalization abilities. Industrial application of the proposed network to hand-written graffiti recognition will be presented to illustrate the merits of the network.
Superficial tribological transformation of a ferritic stainless steel by dynamic microindentation  [PDF]
H. Boudoukha, S. Djabi
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.511147

Currently, the stainless steel starts to widen its fields of application in an extraordinary way in medicine and surgery, in the domestic utensils (flatware) and in heavy industry (petrochemistry, nuclear industry and transport). This work consists of making an experimental study on a type of ferritic stainless steel having undergone the test of the microindentation at controlled load and knowing the Superficial Tribological Transformations (STT) caused by this test. It is supposed that it is a simulation with the damages caused on the stainless steels which are in the environment (the effect of hail) or in industry (shot-blasting of the turbines). The analysis of the repeated shocks is based on the mechanical characterization (microhardness, microstructures of the impacts) and geometrical to see the evolution of the diameter and depth of the impacts according to the number of shocks (cycles of impact), in order to know the plastic deformation.

Iterated Function System-Based Crossover Operation for Real-Coded Genetic Algorithm  [PDF]
S. H. Ling
Journal of Intelligent Learning Systems and Applications (JILSA) , 2015, DOI: 10.4236/jilsa.2015.72004
Abstract: An iterated function system crossover (IFSX) operation for real-coded genetic algorithms (RCGAs) is presented in this paper. Iterated?function system (IFS) is one type of fractals that maintains a similarity characteristic. By introducing the IFS into the crossover operation, the RCGA performs better searching solution with a faster convergence in a set of benchmark test functions.
RF Field-Driven Electron Tunneling through Mesoscale Junctions  [PDF]
Masroor H. S. Bukhari
Journal of Modern Physics (JMP) , 2017, DOI: 10.4236/jmp.2017.812117
Abstract: Preliminary results of a study are reported here investigating mesoscopic tunnel junctions irradiated with coherent low-intensity (-50 to -10 dB) pulsed microwave RF fields at moderately low (LN2) temperatures. Quantum tunneling of electrons was observed through fabricated mesoscale gap junctions as a result of coherent irradiating fields at low temperatures around 77 - 100 K. The tunneling current was seen as a result of applied microwave fields across the junctions, distinguishable from shot noise and resistance effects. The form of tunneling behavior does not lead to any conductance quantization effects which could manifest the junction as a Quantum Point Contact (QPC), hence it is surmised that the phenomenon is purely low intensity RF field-induced tunneling of electrons across the mesoscale junctions at low temperatures.
Increasing Microstrip Patch Antenna Bandwidth by Inserting Ground Slots  [PDF]
Yahya S. H. Khraisat
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2018, DOI: 10.4236/jemaa.2018.101001
Abstract: Microstrip patch antenna (MPA) is widely implemented in different communication systems. One of the main disadvantages of MPA which limits its applications is its narrow bandwidth. In this paper I enhanced the bandwidth of MPA by inserting multiple slots in its ground plane. I used FR-4 substrate to design this antenna. The dimensions of this antenna are 59 mm and 79 mm. The dielectric constant is 4.4 and the height is 1.6 mm. I inserted up to 15 slots in ground plane with 1mm width. The spacing between slots is 3 mm. I investigated two designs. In the first design, slots were arranged in parallel to the feeding line. In the second one, slots were arranged horizontally to the feeding line. The main objective of this paper is to design and simulate MPA suitable for wide number of applications. Antenna bandwidth improvement is 18%. All the simulations were obtained by using HFSS simulator.
Low-Noise Amplification, Detection and Spectroscopy of Ultra-Cold Systems in RF Cavities  [PDF]
Masroor H. S. Bukhari, Zahoor H. Shah
Modern Instrumentation (MI) , 2016, DOI: 10.4236/mi.2016.52002
Abstract: The design and development of a cryogenic Ultra-Low-Noise Signal Amplification (ULNA) and detection system for spectroscopy of ultra-cold systems are reported here for the operation in the 0.5 - 4 GHz spectrum of frequencies (the “L” and “S” microwave bands). The design is suitable for weak RF signal detection and spectroscopy from ultra-cold systems confined in cryogenic RF cavities, as entailed in a number of physics, physical chemistry and analytical chemistry applications, such as NMR/NQR/EPR and microwave spectroscopy, Paul traps, Bose-Einstein Condensates (BEC’s) and cavity Quantum Electrodynamics (cQED). Using a generic Low-Noise Amplifier (LNA) architecture for a GaAs enhancement mode High-Electron Mobility FET device, our design has especially been devised for scientific applications where ultra-low-noise amplification systems are sought to amplify and detect weak RF signals under various conditions and environments, including cryogenic temperatures, with the least possible noise susceptibility. The amplifier offers a 16 dB gain and a 0.8 dB noise figure at 2.5 GHz, while operating at room temperature, which can improve significantly at low temperatures. Both dc and RF outputs are provided by the amplifier to integrate it in a closed-loop or continuous-wave spectroscopy system or connect it to a variety of instruments, a factor which is lacking in commercial LNA devices. Following the amplification stage, the RF signal detection is carried out with the help of a post-amplifier and detection system based upon a set of Zero-Bias Schottky Barrier Diodes (ZBD’s) and a high-precision ultra-low noise jFET operational amplifier. The scheme offers unique benefits of sensitive detection and very-low noise amplification for measuring extremely weak on-resonance signals with substantial low- noise response and excellent stability while eliminating complicated and expensive heterodyne schemes. The LNA stage is fully capable to be a part of low-temperature experiments while being operated in cryogenic conditions down to about 500 mK.
A New Parallel Algorithm for Simulation of Spin-Glass Systems on Scales of Space-Time Periods of an External Field  [PDF]
A. S. Gevorkyan, H. G. Abajyan, H. S. Sukiasyan
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.26059
Abstract: We study the statistical properties of an ensemble of disordered 1D spatial spin-chains (SSCs) of certain length in the external field. On nodes of spin-chain lattice the recurrent equations and corresponding inequal-ity conditions are obtained for calculation of local minimum of a classical Hamiltonian. Using these equa-tions for simulation of a model of 1D spin-glass an original high-performance parallel algorithm is developed. Distributions of different parameters of unperturbed spin-glass are calculated. It is analytically proved and shown by numerical calculations that the distribution of the spin-spin interaction constant in the Heisenberg nearest-neighboring Hamiltonian model as opposed to the widely used Gauss-Edwards-Anderson distribu-tion satisfies the Lévy alpha-stable distribution law which does not have variance. We have studied critical properties of spin-glass depending on the external field amplitude and have shown that even at weak external fields in the system strong frustrations arise. It is shown that frustrations have a fractal character, they are self-similar and do not disappear at decreasing of calculations area scale. After averaging over the fractal structures the mean values of polarizations of the spin-glass on the scales of external field's space-time peri-ods are obtained. Similarly, Edwards-Anderson’s ordering parameter depending on the external field ampli-tude is calculated. It is shown that the mean values of polarizations and the ordering parameter depending on the external field demonstrate phase transitions of first-order.
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