591 research outputs found

    Measures of Performance for a Flexible Manufacturing System

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    A number of measures of performance of flexible manufacturing system, represented by a closed queueing network model are given and the relationships among them have been developed

    An Algorithm for Calculating Expected Production Function and other Similar Functions for a Flexible Manufacturing System

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    The fact that for the case when the number of machines in each group is the same, the expected production function is a symmetric function of scaled workloads, is exploited to express this function in terms of the, basic symmetric functions of the loads. The same technique is suggested for calculating the probability of all the machines being found busy and the variance of the proportion of busy machines in the system

    Maximum-Entropy Principle in Flexible Manufacturing Systems

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    It is shown that the entropy of the joint probability distribution of the queue lengths of the M machine-groups in a closed queuing network model of a flexible manufacturing system is maximum when the loads on the different machine-groups are equal for both single-machine machine-groups and for those multiple-machine machine-groups of which group sizes are equal. It is also shown that for unequal machine-group-sizes, the entropy is not maximum when the workload is balanced. The simultaneous variations of the entropy function of the load distribution, the entropy function of joint probability distribution lengths of queues and the expected production function are studied in order to investigate the relationship between the information content and productive capacity of manufacturing systems. Four measures of load balance in a flexible manufacturing system are given

    A Compact Elliptical Microstrip Patch Antenna for Future 5G Mobile Wireless Communication

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    International audienceIn this paper an elliptical inset fed microstrip patch antenna is proposed for future fifth generation (5G) mobile communications. The antenna is mounted on a compact Fr-4 substrate having dimensions 5 X 5 X 1.6 mm 3 with relative permittivity (ε r) 4.4.The antenna is simulated in the HFSS software and the simulated results shows that it is operating at 28 GHz for reflection coefficient (S 11) below-10dB and has relatively stable radiation pattern

    EVALUATION OF THE EFFECT OF ELEVATED CO2 ON BIOEFFICACY OF BUPROFEZIN INSECTICIDE AGAINST BROWN PLANT HOPPER, Nilaparvata lugens (STÃ…L)

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    The effect of elevated CO2 (570±25ppm) on the brown plant hopper (BPH) population, rice yield parameters, and efficacy of buprofezin (0.05%) in terms of spray volume was studied in an open top chamber (OTCs) during rainy season 2017 and 2018. The pest population was observed to be higher during 2017 compared to the rainy season of 2018. Under elevated CO2, rice plants had more vegetative tillers (18%) and reproductive tillers (22.1%), but there was a decrease in 1000-seed weight (11.2%), seed number per panicle (3.91%), and grain yield (18.8%) in comparison to ambient CO2 grown rice plants. The spray volumes of 700, 600, 500, and 400 l/ha each caused higher BPH mortality under ambient CO2 compared to elevated CO2. A spray volume of 500 l/ha did not prove as effective under elevated CO2 as under ambient CO2. Lower efficacy of spray volume of 500 l/ha under elevated CO2 could be ascribed to higher canopy size under elevated CO2 due to higher tillering. Increased crop canopy size under elevated CO2 may thus require higher spray volume to ensure proper coverage. Results of the study suggested a need to revise spray volume recommendations to facilitate effective management of BPH under climate change

    PIF4 Coordinates Thermosensory Growth and Immunity in Arabidopsis

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    This is the final version. Available from Elsevier via the DOI in this record.This the final version. Available from Elsevier via the DOI in this record.Temperature is a key seasonal signal that shapes plant growth. Elevated ambient temperature accelerates growth and developmental transitions [1] while compromising plant defenses, leading to increased susceptibility [2, 3]. Suppression of immunity at elevated temperature is at the interface of trade-off between growth and defense [2, 4]. Climate change and the increase in average growth-season temperatures threaten biodiversity and food security [5, 6]. Despite its significance, the molecular mechanisms that link thermosensory growth and defense responses are not known. Here we show that PHYTOCHROME INTERACTING FACTOR 4 (PIF4)-mediated thermosensory growth and architecture adaptations are directly linked to suppression of immunity at elevated temperature. PIF4 positively regulates growth and development and negatively regulates immunity. We also show that natural variation of PIF4-mediated temperature response underlies variation in the balance between growth and defense among Arabidopsis natural strains. Importantly, we find that modulation of PIF4 function alters temperature sensitivity of defense. Perturbation of PIF4-mediated growth has resulted in temperature-resilient disease resistance. This study reveals a molecular link between thermosensory growth and immunity in plants. Elucidation of the molecular mechanisms that define environmental signal integration is key to the development of novel strategies for breeding temperature-resilient disease resistance in crops.Biotechnology and Biological Sciences Research CouncilInstitute Strategic ProgrammeInstitute Strategic ProgrammeEuropean Commissio

    In-silico molecular docking analysis of some plant derived molecules for anti-inflammatory inhibitory activity

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    Herbs are essential resources for drug discovery. However, numerous challenges stand in front of the scientific community to discover novel drugs from herbs. To explore the validation behind the precious knowledge of traditional medicine, we focused on achieving virtual screening to detect the potential medicines from the herbs.  Five bioactive compounds from known anti-inflammatory medicinal plants were examined through molecular docking against  cyclooxygenase-2 (COX-2) and inducible Nitric Oxide Synthase (iNOS), using AutoDock 4.2. The docking of selected ligands with COX-2 showed the binding energy varying from -6.15 Kcal/mol to ‑11.24 Kcal/mol. The docking energies of identified ligands with iNOS were generated ranges from -3.85kcal/mol to -6.99 kcal/mol.  Among the tested ligands, it was noted that 6 urs-12-en-24-oic acid showed the best binding energy than other compounds with the lowest binding energy and highest binding affinity with both anti-inflammatory target proteins COX-2 and iNOS. The in silico study validates the potential phytochemical compound of the medicinal herb that contribute to anti-inflammatory activity with low toxicity and minimal side effects

    A STUDY ON SUPPLY CHAIN MANAGEMENT AT MANUFACTURING AND CONSTRUCTION INDUSTRIES HOSUR

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    Our goals are to guarantee just-in-time manufacturing, promote transparency, strengthen supplier ties, and cost-effectively optimise logistics. By performing frequent audits and reviews, we carefully choose our suppliers based on their quality, dependability, and cost-effectiveness. On-time delivery, inventory turnover, supplier performance, and cost-to-revenue ratios are some important performance indicators. Continuous progress is ensured via frequent evaluations and benchmarking. Delivering high-quality goods while meeting changing market needs and maintaining accountable, robust supply chain operations is a priority for Micro Tech CNC Pvt Lt
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