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Enterovirus infections are life-threatening viral infections which occur mainly among children and are possible causes of viral outbreak. Until now, treatment and management of infections caused by members of the genus Enterovirus largely depended on supportive care, and no antiviral medications are currently approved for the treatment of most of these infections.

Utility of e-resources in the present era of Information Technology in a topic for study, because it support teaching learning and research activities of the present user community particularly faculty members. Enormous amount of money is needed for subscribing to e-resources. The purpose of this study is to find out the awareness, availability and the use of eresources by the teaching faculty of engineering colleges in West Godavari. District. AP. It also look into the barriers, the users are facing while using the e-resources and their level of satisfaction. A survey was conducted among the teaching staff members of 12 selected engineering colleges in West Godavari District. AP out of 225 questionnaires distributed, 160 responses were received back. The findings shows that the generality of teaching staff members are thoroughly aware about the e-resources and most of them are using e-resources at least once in a week. Majority of the teaching members using desktop computers for accessing the e-resources. Maximum engineering colleges provide e-resources facility availability is good. Majority of the teaching staff members are using desktop computer for accessing the e-resources and the main purpose of using them is for teaching. The study also reveals that all most faculty members are satisfied with the facilities available for accessing eresources. Keywords: Engineering College Library - E-resources – Teaching Staff members –Usage -Interne

Purpose This paper aims to focus on the basic principle of WO3 gas sensors to achieve high gas-sensing performance with good stability and repeatability. Metal oxide-based gas sensors are widely used for monitoring toxic gas leakages in the environment, industries and households. For better livelihood and a healthy environment, it is extremely helpful to have sensors with higher accuracy and improved sensing features. Design/methodology/approach In the present review, the authors focus on recent synthesis methods of WO3-based gas sensors to enhance sensing features towards toxic gases. Findings This work has proved that the synthesis method led to provide different morphologies of nanostructured WO3-based material in turn to improve gas sensing performance along with its sensing mechanism. Originality/value In this work, the authors reviewed challenges and possibilities associated with the nanostructured WO3-based gas sensors to trace toxic gases such as ammonia, H2S and NO2 for future research.

In this correspondence a small low profile multiband multi-slot MIMO antenna is proposed. The proposed patch antenna covers five bands. Band I covers 2.71–2.82 GHz, band II covers 3.73–4.64 GHz, band III covers 5.14–6.72 GHz, band IV covers 7.52–8.53 GHz and band V covers 8.66–9.41 GHz. It combines many applications into a single device by designing a single antenna that can be operated in multi-bands. The proposed antenna consists of multi-slot radiator with defected ground plane. Proposed antenna is smaller in size 15 × 20 mm2 (0.14λ0 × 0.18 λ0). It is extended to MIMO and mutual coupling is reduced in three bands (III, IV and V) using Defected Ground Structure (DGS). Mutual coupling in the first band (I, II) is minimized using a decoupling element. The proposed MIMO antenna is fabricated and tested. Simulation and measured results are found to be in good agreement.

Powder Bed Fusion (PBF) is an Additive Manufacturing (AM) process. It is the layer by layer addition process. In the future, it is going to be manufactured all types of products used in automotive, aerospace, energy sectors and home appliances. These products can be produced using various AM methods. Few of them are Laminated Object Manufacturing, Powder Bed Fusion and Direct Energy Deposition, Stereolithography (SLA), and Solid Ground Curing (SGC). The present brief review is concentrated on working of PBF process only. It includes Direct Metal Laser Deposition (DMLS), Selective Laser Sintering (SLS), Selective Laser Melting (SLM), Electron Beam Melting (EBM) and Selective Heat Sintering (SHS). In these processes powder lay on the powder bed and it is also known as built platform. Laser used as heat energy source for SLS, SLM and DMLS processes. But EBM uses electron beam as source of energy. The SHS process uses heated thermal head for sintering plastic powders. SLS, DMLS and SHS are powder sintering processes. But SLM and EBM are powder melting processes. This review paper is also covered historical development and usage of technologies, CNC verses Additive Manufacturing/Rapid Prototyping, AM process chain, Classification of AM processes; advantages, disadvantages and applications of PBF process.

The present study aims at assessing the mechanical behavior of aluminum alloy (AA2024) subjected to exfoliation corrosion. The material was exposed to high temperature and subsequent low temperature (HLA) treatment and further the heat-treated samples were subjected to exfoliation corrosion for the duration of 48 and 96 h at room temperature. The HLA treatment increases the retention property of material in the corrosive environment. Further, hardness and impact strength was also increased under the corrosive environment with HLA treatment. In addition to the experimental investigation, a series of simple second-degree polynomial equations were developed to predict the various mechanical properties at different intervals of corrosion durations of AA2024 specimens subjected to HLA exfoliation corrosion.

The effect of machining parameters on the thrust force, torque and burr height while drilling Al 2618, Al2618 with 10% boron carbide (B4C) and Al2618 with 10%B4C and 5% graphite (Gr) hybrid composites are addressed. The composites are produced using a process of liquid metallurgy. The findings indicate that, feed rate had a significant impact on thrust force and the height of the exit burr. The Al2618 + 10% B4C-5%Gr reinforced hybrid composites exhibit smaller thrust force and burr height in contrast to the Al2618 + 10% B4C composite. The reduced thrust force, torque and burr height was due to the strong graphite surface lubrication properties. The chips produced while machining graphitic composites are discontinuous, and hence beneficial.

The present investigation was focused to evaluate the mechanical properties of AA7075 subjected to corrosion and heat treatment. Exfoliation corrosion has been used to infuse rapid corrosion on the material coupled with high temperature and subsequent low-temperature aging (HLA). It has been found that the localized corrosion pit formation occurs with HLA and corrosion exposure durations with substantial inter-granular changes and the formation of cracks. A significant reduction in mechanical properties was observed with HLA-treated samples subjected to corrosion. The material’s stiffness was increased due to HLA, and again within the corrosive environment, a decreasing trend was observed with immersion durations. A series of simple one-dimensional linear and polynomial equations were developed to determine the properties of AA7075 samples subjected to HLA and corrosion.

Aim: To improve management of the posterior urethral valve (PUV) in children in a hospital environment. Patients and Methods: This was a retrospective descriptive study that covered a sixteen (16) years period, from January 1, 2002 to December 31, 2017, In pediatric surgery and urology departments of our teaching hospital, 26 cases of posterior urethral valve (PUV) were involved. The diagnosis was made by retrograde urethrocystography and micturition, supplemented by ultrasound. Results: During this period, 26 patients (1.7%) had a PUV. The mean age of the patients was 73, 2 months with extremes ranging from 6 to 180 months. Fifteen patients consulted for dysuria, 8 for complete retention of urine. Only one patient had a history of rolling the valves to the benign ones. The main complications found were urinary tract infection in 15 children, urolithiasis in 3 children and renal failure in 2 children. Two children had serum creatinine values of 50 and 58 mg/L. The lamination of the posterior urethral valves was performed in all patients. In our series, we had one death from chronic renal failure in a 6-year-old child with a bilateral mute kidney at IVU. Conclusion: The valve diagnosis of the posterior urethra is made late because the diagnosis is still postnatal.

The heat transfer is assumed to take place in a porous medium under the influence of two sources such as a whole surface applied with hot temperature and another small strip of heating element being kept at left side of the cavity. The governing equations are derived from the basic principle of Darcy flow. The impact of the heating strip length is investigated with respect to its position at x = 0.25L of the cavity with L being the length of cavity. Finite element method is used to form a set of equations in algebraic form that can be solved easily with the help of a computer code. The solution is set with proper tolerance limit to get accurate results. The results indicate that the position of element has impact on the heat transfer from hot to cold surface.

This article is aimed to study the thermal energy transport phenomenon caused by heating the porous cavity at left vertical wall as well as an internal heating by a strip of varying length near the cooling surface. The internal heating strip that varies in length is kept at x = 3L/4 of the cavity where L is the overall cavity length. Finite element method is at the core of solution techniques which is employed along with triangular shaped elements. The solution is arrived by following an iterative method that depends on satisfying the equations to a predetermined error level. It is ensured that the results are accurate enough to predict the phenomenon under study. The main aim of the study is to understand what happens when the heating element is placed towards the right vertical surface. The results are described for physical and geometrical parameters of the problem being considered.

Background: Often, patients with idiopathic interstitial pneumonia (IIP) have certain specific clinical features to suggest an autoimmune disease but do not justify the current rheumatologic classification systems to fit into a diagnosis of connective tissue disease (CTD)-associated IIP. There is a great paucity of clinical, serological, and radiological data of these patients from India. Aim: The aim was to study the clinicoradiological and autoantibody profile in patients with interstitial pneumonia with autoimmune features (IPAF). Methodology: It was a prospective, observational study conducted in a tertiary care center between December 2015 and December 2016. A total of 30 patients who satisfied the criteria for IPAF according to the American Thoracic Society/European Respiratory Society research were included in the study. Results: All 30 patients satisfied IPAF criteria, but they did not meet the immunological criteria for CTD. Majority of them were female (86.67%) and nonsmokers. The mean age was 52.5 ± 14.5 years. The most common clinical symptom was inflammatory arthritis in 20 (66.67%) patients, followed by Raynaud's phenomenon in 5 (16%) patients. Nonspecific interstitial pneumonia was the most common radiological pattern seen in 20 (66.67%) patients, while antinuclear antibody (1:320) was the most common autoantibody positive in 18 (60.0%) patients, followed by rheumatoid arthritis factor in 15 (50%) patients. Conclusions: High female predominance along with distinct imaging, histologic and serological characteristic features are seen in patients with IPAF as compared to those with IIP. Further studies in patients with IPAF are needed to understand the natural history and its management.