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In the present study, three reinforcements viz. graphite, SiC and Al2O3 were added in LM6 matrix to evaluate their strengthening efficiency. Stir casting technique was utilised for fabrication of composites, where the amount of reinforcements varied from 1.0 wt.% to 3.0 wt.%. Hardness and tensile strength was performed to evaluate the mechanical properties and optical microscopy was utilised to analyse the microstructure of the prepared composites. It was observed that the tensile strength and hardness increased linearly, irrespective of the reinforcement type and content. However, graphite reinforced composites exhibited best mechanical properties followed by SiC and Al2O3 reinforced composites. From the optical microscopy images, it was clearly observed that as the concentration of reinforcement increased, the tendency to form agglomerates also increased eventually resulting in porosities. However, composites containing large amount of reinforcements still displayed highest values of tensile strength and hardness. This might be attributed to the fact that the detrimental effect of porosities was negligible as compared to the strengthening effect exerted by the reinforcements. [ABSTRACT FROM AUTHOR]

Bluetooth technology legitimates the topology (piconets) which collects the slaves controlled by master on ad hoc network. Collection of one or more piconets in Bluetooth network is called scatternet. This technology is based on the devices connected for communication at low-powered and short-ranged network application. It is a replacement of wire technology with cordless devices. Bluetooth technology is specification of wireless personal area which connects several devices and exchanges data between mobile phones at very low power consumption. The communication protocols have the feature of complexity of linking address. It is always ready to work in any form either as master or slave, if additional devices are attached in the network. The slave device gets permission to attain period and synchronization if it has been asked by the master device. The intercommunication between multiple Bluetooth devices within an assumed environmental situation is termed as 'piconet', with their meticulous time slots on a period partition multiplexing base by the master device and the subordinate devices bounded by the master. Reserve distributions are determined by the master and dynamically replicate the data to the desired system. The enrichment in the established Minnesota Multiphasic Personality Inventory (MMPI) structure creates it a respectable possibility for scatternet requests. [ABSTRACT FROM AUTHOR]

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Background and Aim: A growing body of literature suggests the association between dementia risk and proton pump inhibitor (PPI) use. Therefore, we aimed to investigate the association between PPI use and dementia risk. Methods: An extensive literature search was performed in PubMed, Embase, and Cochrane till March 31, 2019. All the studies (cohort and case–control) assessing the association between PPI use and dementia risk were eligible for inclusion. Articles were selected based on the screening of title and abstract, data were extracted, and risk of bias was assessed using Newcastle–Ottawa scale. The primary outcome was pooled risk of dementia among PPI user as compared with non‐PPI user. Secondary outcomes include dementia risk based on subgroups. Statistical analysis was performed using review manager software. Results: Twelve studies (eight cohort and four case–control) were found to be eligible for inclusion. Majority of the studies were of high quality. Dementia was diagnosed based on International Classification of Diseases 9/10 codes in majority of the included studies. PPI use was not associated with the dementia risk, with a pooled relative risk (RR) of 1.05 (95% confidence interval [CI]: 0.96–1.15), P = 0.31. Subgroup analysis based on study design (cohort: P = 0.14; case–control: P = 0.14), sex (RR 1.25 [95% CI: 0.97–1.60], P = 0.08), histamine 2 receptor antagonist blockers (P = 0.93), and Alzheimer's disease (RR 1.00 [95% CI: 0.91–1.09], P = 0.93) revealed no significant association between PPI use and dementia risk. Conclusion: We found no significant association between PPI use and the risk of dementia or Alzheimer's disease. [ABSTRACT FROM AUTHOR]