MAINTENANCE STRATEGY EVALUATION BASED ON AHP – TOPSIS

This paper presents an application of Analytical Hierarchy Process (AHP) is combined with Technique for Order Preference by Similarly to Ideal Solution (TOPSIS) model for selection of the best maintenance strategy for pump in paper industry. AHP is used to compute the criteria weights whereas TOPSIS is used to ranking the maintenance strategy alternatives. This study focuses on four maintenance strategies such as Corrective Maintenance (CM), Predictive maintenance (PM), Time based preventive Maintenance (TM) & Condition Based Maintenance (CBM) and four main criteria such as safety, cost, added value and feasibility are used to evaluate the optimum maintenance strategy

Review on various Pharmaceuticals and their Pharmacology of Anti-repellents- As a Preventive aspect of Vector (mosquito species) borne Disease

Mosquito is one of the most vexing bloodsucking insects. Malaria, Filariasis, Japanese Encephalitis, Dengue fever, Yellow fever, Chikungunya, and Zika are all transmitted by mosquito species belonging to the genera Anopheles, Culex, & Aedes. Mosquitoes alone infect almost 700 million people each year, resulting in one million fatalities. Malaria, which is caused by Plasmodium parasites and transmitted by female Anopheles mosquito bites, is still a substantial illness that impacts the development of infants and kids. Present review work aims to review various pharmaceutical dosage forms of anti-repellent products and their molecules, mechanism of repellent activity as a preventive of different vector bone diseases. Malaria cases were over 207 million in 2012, with 627,000 deaths reported. In addition, Yellow fever, which is spread by the Haematologus and Aedes mosquitoes, causes 200,000 instances of disease and 30,000 fatalities worldwide each year. Dengue fever is spread by Aedes aegypti and Aedes albopictus mosquitos, which are responsible for more than 100 million infections yearly. Furthermore, more than 2.5 billion individuals, or about 40% of the world's population, are now in danger of contracting Dengue fever. This review helped to understand the various kinds of vector bone disease and the surveillance of disease data. In addition, the review revealed the various pharmaceutical products would help control the Mosquitoes bits and related disease as preventive aspects and the components of pharmaceutical and their mechanism of action to inhibit the spread of various insects’ related disease

Anti-Theft Protection of Vehicle by GSM GPS with Fingerprint Verification

This paper focuses on preventing car theft using microcontrollers and GSM modules. We are generating the results with better accuracy and proficiency. It can be helpful to those people who want better and more advanced security in their vehicle

Comparative Analysis of Rotation Invariant Pattern and Uniform Pattern in MMLBP Technique for Face Recognition

Recognizing humans based on one or more physical or behavioral traits is referred as Biometrics. Comparing to the traditional methods to authenticate persons, biometric plays a vital role in the area of human recognition. In the field of biometric, face and palm print recognition seeks more attention for the researchers. The failure of recognition is minimum and also the implementation is easier than more other techniques. In this paper we concentrated on face recognition with Local Binary Pattern(LBP), it is simple and fast to recognize face than more other algorithms. Uniform LBP is used to extract features to recognize the face to authenticate the persons. The “non-uniform” patterns are clustered into one pattern due to this lot of information lost. In order to overcome the heavy data which loss in non-uniform patterns a modified multi-scale LBP histogram algorithm is proposed. Hence, the useful non-uniform information is utilized without any training step with entire information without any data loss. We also compare the mapping methods, rotational invariant pattern and uniform with rotational invariant patterns and .hence evaluate the performance of the mapping methods

Understanding the effects of a polymer on the surface dissolution of pharmaceutical cocrystals using combined experimental and molecular dynamics simulation approaches

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.The molecular interactions between the surfaces of cocrystals [i.e., flufenamic acid and theophylline (FFA-TP), flufenamic acid and nicotinamide (FFA-NIC), and carbamazepine and nicotinamide (CBZ-NIC)] and the polymers [i.e., polyethyleneglycol (PEG), polyvinylpyrrolidone (PVP) and copolymer of vinylpyrrolidone (60%)/vinyl acetate (40%) (PVP-VA)] were investigated through combined experimental and molecular dynamics simulation approaches to resolve the mechanisms of cocrystal dissolution and precipitation. It was found that adsorption of the polymers on the surfaces of cocrystals might prevent the precipitation of the parent drug and alter the dissolution rate. The effect of polymers on precipitation could be determined by the cocrystal dissolution rate, the interactions of polymers with the surfaces of cocrystals, the characters of the noncovalent bonds formed between the polymers and the cocrystal surfaces, and the mobility and conformation of the polymers. The etching experiments of single cocrystals revealed that FFA-NIC and CBZ-NIC appeared as surface precipitation cocrystals while FFA-TP could lead to bulk precipitation. Both PVP and PVP-VA were good precipitation inhibitors for FFA-NIC and they could completely inhibit the recrystallization of FFA III on the surfaces of dissolving cocrystals. In addition, as the adsorption of the polymer was slower than dissolution rate of the cocrystals, PVP and PVP-VA could only partially inhibit the recrystallization of CBZ dihydrate on the surface of CBZ-NIC. While PEG had no inhibitory effect on the surface crystallization of FFA-NIC and CBZ-NIC, due to its weak interactions with the surfaces of the cocrystals, it enhanced the dissolution performance of FFA-TP. In contrast, PVP and PVP-VA reduced the dissolution rate of FFA-TP and subsequently undermined the performance of cocrystals. Taken together, the approach of combining experimental and molecular dynamics simulation provided insights into the mechanisms of cocrystal dissolution as well as the polymers acting as inhibitory excipients for precipitation/recrystallisation, making contribution to the development of novel formulations

Infrared Thermal Images of Solar PV Panels for Fault Identification Using Image Processing Technique

Among the renewable forms of energy, solar energy is a convincing, clean energy and acceptable worldwide. Solar PV plants, both ground mounting and the rooftop, are mushrooming thought the world. One of the significant challenges is the fault identification of the solar PV module, since a vast power plant condition monitoring of individual panels is cumbersome. This paper attempts to identify the panel using a thermal imaging system and processes the thermal images using the image processing technique. An ordinary and thermal image has been processed in the image processing tool and proved that thermal images record the hot spots. Similarly, the new and aged solar photovoltaic panels were compared in the image processing technique since any fault in the panel has been recorded as hot spots. The image recorded in the aged panels records hot spots, and performance has been analyzed using conventional metrics. The experimental results have also been verified

Role of Natural Cross Linkers in Resin–Dentin Bond Durability: A Systematic Review and Meta-Analysis

Background: The role of endogenous Matrix Metallo Proteinases in resin dentin bond deterioration over time has been well documented. The present study aimed to systematically review the literature; in vitro and ex vivo studies that assessed the outcomes of natural cross-linkers for immediate and long-term tensile bond strength were included. Methods: The manuscript search was carried out in six electronic databases—PubMed/MEDLINE, LILACS, SciELO, Cochrane, Web of Science and DOAJ, without publication year limits. Only manuscripts in English (including the translated articles) were selected, and the last search was performed in December 2020. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement was followed. Results: From the 128 potentially eligible studies, 48 full-text articles were assessed for eligibility. After eligibility assessment and exclusions, 14 studies were considered for systematic review and seven studies for meta-analysis. Amongst the selected studies for meta-analysis, three had a medium and four had a low risk of bias. Conclusions: It was evidenced by the available data that Proanthocyanidin is the most efficient natural cross-linker to date, in preserving the bond strength even after ageing

Jet nebulizer-spray coated CZTS film as Pt-free electrocatalyst in photoelectrocatalytic fuel cells

The copper zinc tin sulphide (CZTS) is a promising p-type earth abundant alloy that received profound attention as an electron driven dark catalyst in electrocatalytic reduction reactions. In particular, the photoelectrocatalysis based solar fuel cell encompass with inexpensive electrocatalyst (hydrogen evolution reaction) is anticipated to support to reduce the overall system cost. However, demonstrating CZTS as Pt-free counter electrode in photoelectrocatalytic fuel cells is scarce. Because, achieving high electronic conductivity, favourable (1 1 2) crystalline structure towards high electrocatalytic property through low cost vacuum-free technique is remains challenge. In this report, we demonstrate p-type CZTS film fabrication at different processing temperature (250, 300, and 350 °C) using jet nebulizer spray (JNS) coating technique. The processing temperature play a key role on crystalline property, composition, and catalytic activity of CZTS. The x-ray diffraction and energy dispersive analysis results reveals that the CZTS film prepared 250 °C exhibit kesterite structure oriented in (1 1 2) direction. The electrocatalytic reduction property of as-synthesised CZTS electrodes in water reduction process is tested in aqueous 1 M NaOH solution. Among the different temperature processed films, CZTS prepared at 250 °C result high electrocatalytic reduction activity ∼-2.1 mA cm−2 at -0.44 V vs Ag/AgCl. In addition, these film exhibits high electrical conductivity than that of other CZTS samples. Therefore, optimised CZTS 250 °C film is further examined in hydrogen peroxide (H2O2) reduction which result enhanced electrical current generation after adding the 1 M of hydrogen peroxide in PBS electrolyte based electrochemical cell. This encouraged to apply as Pt-free counter electrode in H2O2 electrolyte based photoelectrocatalytic fuel cells. The PEC cells encompass with TiO2 nanowire photoelectrode, and CZTS-250 °C counter electrode showed feasible photocurrent generation compared to conventional Pt counter electrode. This proof-of-concept type Pt-free PEC cells leads to open new paths in implementing wide-range of semiconductor based electrocatalyst to support in development of low-cost photoelectrocatalytic fuel cells

Methylphenidate for attention-deficit/hyperactivity disorder in children and adolescents: Cochrane systematic review with meta-analyses and trial sequential analyses of randomised clinical trials

Study question: Is methylphenidate beneficial or harmful for the treatment of attention-deficit/hyperactivity disorder (ADHD) in children and adolescents? / Methods: Electronic databases were searched up to February 2015 for parallel and crossover randomised clinical trials comparing methylphenidate with placebo or no intervention in children and adolescents with ADHD. Meta-analyses and trial sequential analyses (TSA) were conducted. Quality was assessed using GRADE. Teachers, parents, and observers rated ADHD symptoms and general behaviour. / Study answer and limitations: The analyses included 38 parallel group trials (n=5111, median treatment duration 49 days) and 147 crossover trials (n=7134, 14 days). The average age across all studies was 9.7 years. The analysis suggested a beneficial effect of methylphenidate on teacher rated symptoms in 19 parallel group trials (standardised mean difference (SMD) −0.77, n=1698), corresponding to a mean difference of −9.6 points on the ADHD rating scale. There was no evidence that methylphenidate was associated with an increase in serious adverse events (risk ratio 0.98, nine trials, n=1532; TSA adjusted intervention effect RR 0.91). Methylphenidate was associated with an increased risk of non-serious adverse events (1.29, 21 trials, n=3132; TSA adjusted RR 1.29). Teacher rated general behaviour seemed to improve with methylphenidate (SMD −0.87, five trials, n=668) A change of 7 points on the child health questionnaire (CHQ) has been deemed a minimal clinically relevant difference. The change reported in a meta-analysis of three trials corresponds to a mean difference of 8.0 points on the CHQ (range 0-100 points), which suggests that methylphenidate may improve parent reported quality of life (SMD 0.61, three trials, n=514). 96.8% of trials were considered high risk of bias trials according to the Cochrane guidelines. All outcomes were assessed very low quality according to GRADE. / What this study adds: The results suggest that among children and adolescents with a diagnosis of ADHD, methylphenidate may improve teacher reported symptoms of ADHD and general behaviour and parent reported quality of life. However, given the risk of bias in the included studies, and the very low quality of outcomes, the magnitude of the effects is uncertain. Methylphenidate is associated with an increased risk of non-serious but not serious adverse events. / Funding, competing interests, data sharing: Region Zealand Research Foundation and Copenhagen Trial Unit. Competing interests are given in the full paper on bmj.com. Full data are available in the version of this review published in The Cochrane Library