A study of methods of prediction and measurement of the transmission of sound through the walls of light aircraft

The acoustic intensity technique was applied to the sound transmission loss of panel structures (single, composite, and stiffened). A theoretical model of sound transmission through a cylindrical shell is presented

Implementation of soft processor based SOC for JPEG compression on FPGA

With the advent of semiconductor process and EDA tools technology, IC designers can integrate more functions. However, to reduce the demand of time-to-market and tackle the increasing complexity of SoC, the need of fast prototyping and testing is growing. Taking advantage of deep submicron technology, modern FPGAs provide a fast and low-cost prototyping with large logic resources and high performance. So the hardware is mapped onto an emulation platform based on FPGA that mimics the behaviour of SOC. In this paper we use FPGA as a system on chip which is then used for image compression by 2-D DCT respectively and proposed SoC for image compression using soft core Microblaze. The JPEG standard defines compression techniques for image data. As a consequence, it allows to store and transfer image data with considerably reduced demand for storage space and bandwidth. From the four processes provided in the JPEG standard, only one, the baseline process is widely used. Proposed SoC for JPEG compression has been implemented on FPGA Spartan-6 SP605 evaluation board using Xilinx platform studio, because field programmable gate array have reconfigurable hardware architecture. Hence the JPEG image with high speed and reduced size can be obtained at low risk and low power consumption of about 0.699W. The proposed SoC for image compression is evaluated at 83.33MHz on Xilinx Spartan-6 FPGA

A Conceptual study of Mutrashmari w.s.r to Vataja Mutrashmari

The Mutrashmari is one of the diseases of Mutravaha Srotas. Acharya Sushruta has considered its one among the Astamahagada since it is very difficult to cure. The Lakshanas of Mutrashmari explained in Ayurvedic texts resembles the signs and symptoms of Urolithiasis. The Mutrashmari is classified into 4 types they are Vataja, Pittaja, Kaphaja, Shukraja. The Vataja Mutrashmari is having charecterstics such as Shyavavarna, Parush, Khara and Vishama and hard studded with thorns like Kadamba Pushpa, On the basis of color and structure it can be correlated with Calcium oxalate calculi. Incidents of Mutrashmari have been more frequently increased in these days due to various reasons like altered food habits, changed lifestyle, stress, strain etc. Calcium stones are the most common comprising about 75% of all urinary calculi, in which Calcium oxalate calculi comprise about 50%. In Ayurveda, Nidana Parivarjana and Samprapti Vighatana are one among the parameter in planning the Chikitsasutra. This article is mainly focused on Nidana Panchaka of Mutrashmari with special reference to Vataja Mutrashmari which may help in accurate diagnosis and treatment

Content-Centric Networking at Internet Scale through The Integration of Name Resolution and Routing

We introduce CCN-RAMP (Routing to Anchors Matching Prefixes), a new approach to content-centric networking. CCN-RAMP offers all the advantages of the Named Data Networking (NDN) and Content-Centric Networking (CCNx) but eliminates the need to either use Pending Interest Tables (PIT) or lookup large Forwarding Information Bases (FIB) listing name prefixes in order to forward Interests. CCN-RAMP uses small forwarding tables listing anonymous sources of Interests and the locations of name prefixes. Such tables are immune to Interest-flooding attacks and are smaller than the FIBs used to list IP address ranges in the Internet. We show that no forwarding loops can occur with CCN-RAMP, and that Interests flow over the same routes that NDN and CCNx would maintain using large FIBs. The results of simulation experiments comparing NDN with CCN-RAMP based on ndnSIM show that CCN-RAMP requires forwarding state that is orders of magnitude smaller than what NDN requires, and attains even better performance

Studies of new media radiation induced laser

Various lasants were investigated especially, 2-iodohepafluoropropane (i-C3F7I) for the direct solar pumped lasers. Optical pumping of iodine laser was achieved using a small flashlamp. Using i-C3F7I as a laser gain medium, threshold inversion density, small signal gain, and laser performance at the elevated temperature were measured. The experimental results and analysis are presented. The iodine laser kinetics of the C3F7I and IBr system were numerically simulated. The concept of a direct solar-pumped laser amplifier using (i-C3F7I) as the laser material was evaluated and several kinetic coefficients for i-C3F7I laser system were reexamined. The results are discussed

Implementation of dual stack technique for reducing leakage and dynamic power

This paper deals with proposal of a new dual stack approach for reducing both leakage and dynamic powers. The development of digital integrated circuits is challenged by higher power consumption. Thecombination of higher clock speeds, greater functional integration, and smaller process geometries has contributed to significant growth in power density. Scaling improves transistor density and functionality ona chip. Scaling helps to increase speed and frequency of operation and hence higher performance. As voltages scale downward with the geometries threshold voltages must also decrease to gain the performance advantages of the new technology but leakage current increases exponentially. Today leakage power has become anincreasingly important issue in processor hardware and software design. It can be used in various applications like digital VLSI clocking system, buffers, registers, microprocessors etc. The leakage power increases astechnology is scaled down. In this paper, we propose a new dual stack approach for reducing both leakage and dynamic powers. Moreover, the novel dual stack approach shows the least speed power product whencompared to the existing methods. All well known approach is “Sleep” in this method we reduce leakage power. The proposed Dual Stack approach we reduce more power leakage. Dual Stack approach uses theadvantage of using the two extra pull-up and two extra pull-down transistors in sleep mode either in OFF state or in ON state. Since the Dual Stack portion can be made common to all logic circuitry, less number of transistors is needed to apply a certain logic circuit.The dual stack approach shows the least speed power product among all methods. The Dual Stack technique provides new ways to designers who require ultra-low leakage power consumption with much less speedpower product

The concept of Indriya Pradoshaja Vikara

Prana Laxanas are seen through the Indriyas. These are also responsible for Budhi Pravartana. The Pancha Gnyanendriyas are the Sadhana for the perception of Bahyagnyana. When the Dushita Doshas reach the Adhishtana of Indriyas it leads to partial or total loss of function i.e. Upatapa and Upaghata type of Indriya Pradoshajavikara respectively. Any functional derangement can lead to temporary or permanent disability. Hence if a physician is well versed with this concept, one can diagnose early, know the prognosis, adopt preventive measures, and give precise treatment

Dinuclear metal complexes derived from a bis-chelating heterocyclic ligand

4,6-bis-{1-[(4,6-dichloro-[1,3,5]triazine-2-yl)-hydrazone]-ethyl-benzene-1,3-diol, C16H12N10O2Cl4 (H2-BDTD), and Co(II), Ni(II), Cu(II) and Zn(II) complexes derived from its dibasic bis-chelating form (BDTD2- or L2-) were prepared in methanol-triethylamine and characterized by MS, NMR, IR, UV-VIS and AA spectroscopic studies. Conductivities, magnetic susceptibility measurements and thermal analyses showed bis- N,N,O donor behavior of L2-. The analytical data indicate that the metal to ligand ratio is 2:1 in all the complexes. The coordination of triethylamine, water and chloride ion are observed in the Co(II), Zn(II) and Ni(II) complexes. The absence of ionizable or coordinated chloride in Cu(II) complex is a notable feature. Octahedral geometry for Co(II), Zn(II) and Ni(II) and square planar geometry for Cu(II) complexes are proposed. The paramagnetic complexes exhibit subnormal magnetic moments at room temperature (RT)

A case of human parvo virus B 19 infection with erythroid hypoplasia and Idiopathic thrombocytopenic purpura in an immunocompetent child: a case report

Human parvo virus B19 (B19V) is a small (5.5kb) single stranded DNA (deoxy ribo nucleic acid) virus with known tropism and cytotoxicity for erythroid progenitors. Human parvovirus B19 infection is associated with various hematological disorders like aplastic crisis, erythroid hypoplasia and idiopathic thrombocytopenic purpura. Here we are presenting a rare case of parvo virus B19 infection with erythroid hypoplasia and idiopathic thrombocytopenic purpura occurring simultaneously in a 13year old girl who presented with fever and bleeding manifestations. A 13 year old girl presented with fever of 5 days duration, epistaxis and bleeding gums spontaneously of one day duration. On admission she had pancytopenia. Her B12 and folate levels were within normal range. Bone marrow aspiration suggestive of normal cellularity with paucity of erythroid precursors, myeloid: erythroid ratio 9:1 and gaint basophilic pronormoblasts with intra-nuclear inclusions, with no further maturation, as well as increased megakaryocytes with few hypolobate forms suggestive of erythroid hypoplasia and idiopathic thrombocytopenic purpura. Parvo virus B19 DNA PCR by nested polymerase chain reaction was detected in serum. She was treated with blood component support and with steroids for idiopathic thrombocytopenic purpura. She recovered and her cell counts are improved. This case highlights the morphology of Human parvo virus B19 inclusions and its association with simultaneous presentation of erythroid hypoplasia and idiopathic thrombocytopenic purpura in immunocompetent child, which is very rare