38 research outputs found

    EFFECT OF BALL MILLING ON PEAK CURRENT AND EQUIVALENT SERIES RESISTANCE OF METAL OXIDE BASED ELECTROCHEMICAL DOUBLE LAYER CAPACITOR

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    Recently, advances have been made in improving both energy and power density of energy storing devices. Electrochemical Double Layer capacitor (EDLC) is one of the technologies that we are looking forward to fulfill the low power- low energy applications such as memory back up. ELDC is mainly a pulse power device even though it is seen as a replacement to battery in low power applications. At present EDLC technology is under development stage. Power density, energy density, specific capacitance, internal resistances are required to be improved. Electrochemistry plays a crucial role in the storage as well as in the generation of energy. Hence, the particles size and distribution are need to be optimized. Ball milling is the tool for optimizing the size of the components used to make the EDLCs. Ball milling has significant effect on the various parameters of the EDLC. It was found that as we increase the time of ball milling the Equivalent Series Resistance (ESR) decreases and the peak current increases. But he changes are significant for higher time of ball milling

    Poster: TGX: Secure SGX enclave management using TPM

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    Intel SGX provides a trusted execution environment on commodity computing platforms. Recent micro-architectural attacks like Spectre, Meltdown, or Foreshadow, however, raise doubts about the promised isolation of SGX-protected code and data, including some of the necessary cryptographic operations and credentials, e.g., for attestation. In this poster we present TGX, a combination of SGX and TPM working together to provide stronger isolation of crucial cryptographic operations of SGX and a way to circumvent microarchitectural attacks against SGX. TGX enables SGX to move its signing and verification mechanism from processor to TPM making the security sensitive information never available outside TPM, removing, for instance, the possibilities of stealing them from L1 cache. In particular, TGX should motivate that SGX and TPM can form a beneficial symbiosis

    Retrofitting parallelism onto OCaml.

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    OCaml is an industrial-strength, multi-paradigm programming language, widely used in industry and academia. OCaml is also one of the few modern managed system programming languages to lack support for shared memory parallel programming. This paper describes the design, a full-fledged implementation and evaluation of a mostly-concurrent garbage collector (GC) for the multicore extension of the OCaml programming language. Given that we propose to add parallelism to a widely used programming language with millions of lines of existing code, we face the challenge of maintaining backwards compatibility--not just in terms of the language features but also the performance of single-threaded code running with the new GC. To this end, the paper presents a series of novel techniques and demonstrates that the new GC strikes a balance between performance and feature backwards compatibility for sequential programs and scales admirably on modern multicore processors

    Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

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    无线传感器网络,作为全球未来十大技术之一,集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术,可实时感知、采集、处理、传输网络分布区域内的各种信息数据,在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议,并针对大规模的无线传感器网络设计了一种树状路由协议,它根据节点地址信息来形成路由,从而简化了复杂繁冗的路由表查找和维护,节省了不必要的开销,提高了路由效率,实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR(AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位:工学硕士院系专业:信息科学与技术学院通信工程系_通信与信息系统学号:2332007115216

    Phase diagrams of three-lane asymmetrically coupled exclusion process with Langmuir kinetics

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    This letter studies a fully asymmetrically coupled three-lane totally asymmetric simple exclusion process with Langmuir kinetics under open boundary conditions. Phase diagrams and density profiles for different kinetic rates are obtained using a mean-field analysis along with a singular perturbation technique and are found to be in good agreement with Monte Carlo simulation results. Some mixed phases are observed in the middle lane resulting into bulk-induced phase transitions. We have found that a number of steady-state phases firstly increases then decreases with respect to an increase in lane changing rate. Critical values of the lane changing rate are identified at which the appearance or disappearance of certain phases is observed. We have identified the jumping effect in the position of shock in the middle lane with respect to an increase in the lane changing rate

    Clinical Aspect of Diseases of Cornea in Ayurveda

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    Introduction: There are total seventy sixocular diseases described in Sushruta Samhita and 94 diseases in Astanga Sangrah & Astanga Hridya. This concept of classification of ocular disorders is well buttressed by classifying the disease as Sandhigata (Diseases affecting junctional areas of eye), Vartamagata (Diseases of eyelids), Shuklagata (Diseases of Sclera plus Conjunctiva), Krishnagata (Diseases of Cornea), Sarvagata (Diseases affecting all parts of Eye), Drishtigata (Diseases of Lens). Material and Methods: Extensive literary review of various text of Ayurveda in order to carve out a possible comparison of Ayurvedic Corneal Ophthalmological disorders with modern counterpart. Aims: To establish clinical correlation between diseases of Krishna mandala to disease of the cornea. Discussion: Classifications of corneal diseases in classical Ayurvedic texts are sequential and progressive in nature viz. one condition progress to the next corresponding stage. Acharya Sushruta described 4 types of diseases of cornea while Vagbhatta has enumerated 5 types. A conscious endeavor is made to correlate the Ayurvedic and modern corneal disorders in a complimentary manner. Conclusion: The congruent behavior of corneal disorders of Ayurved and modern is justified by the clinical symptomology, progression of the disease, prognostic reasons and relevant intervention. The integrated disease approach, treatment application and predicting prognosis will suffice the resultant outcome of the disease in a more favorable perspective which will herald a better approach in managing preventable corneal blindness.Â

    DNA Aptamer Targets Mycobacterium tuberculosis DevR/DosR Response Regulator Function by Inhibiting Its Dimerization and DNA Binding Activity

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    Tuberculosis is recognized as one of the major public health threats worldwide. The DevR-DevS (DosR/DosS) two-component system is considered a novel drug target in Mycobacterium tuberculosis (Mtb), the etiological agent of tuberculosis, owing to its central role in bacterial adaptation and long-term persistence. An increase in DevR levels and the decreased permeability of the mycobacterial cell wall during hypoxia-associated dormancy pose formidable challenges to the development of anti-DevR compounds. Using an in vitro evolution approach of Systematic Evolution of Ligands by EXponential enrichment (SELEX), we developed a panel of single-stranded DNA aptamers that interacted with Mtb DevR protein in solid-phase binding assays. The best-performing aptamer, APT-6, forms a G-quadruplex structure and inhibits DevR-dependent transcription in Mycobacterium smegmatis. Mechanistic studies indicate that APT-6 functions by inhibiting the dimerization and DNA binding activity of DevR protein. In silico studies reveal that APT-6 interacts majorly with C-terminal domain residues that participate in DNA binding and formation of active dimer species of DevR. To the best of our knowledge, this is the first report of a DNA aptamer that inhibits the function of a cytosolic bacterial response regulator. By inhibiting the dimerization of DevR, APT-6 targets an essential step in the DevR activation mechanism, and therefore, it has the potential to universally block the expression of DevR-regulated genes for intercepting dormancy pathways in mycobacteria. These findings also pave the way for exploring aptamer-based approaches to design and develop potent inhibitors against intracellular proteins of various bacterial pathogens of global concern
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