An Update on Nano Coatings To Mitigate Corrosion

Fireside corrosion of water wall tubing is the primary cause of forced outages and availability losses in conventional coal plants, costing U.S. power producers alone almost $150 million each year. Existing mitigation measures—including weld overlays and thermal spray coatings—offer some protection, especially in subcritical boilers. However, field experience indicates that weld overlays can create additional problems, while conventional coating techniques cannot provide long-term protection in supercritical units. In ultra super critical boilers. High working temperatures and weights make more extreme gas side tube consumption issues. Nano composite coatings of Zn-Ni-SiO2 in many layers kept on gentle steel from Zinc-Nickel shower, having Zn+2 and Ni+2 particles and consistently scattered Nano silicon dioxide particles. The consumption attributes and properties over layers of Nano composite coatings were considered and inspected by electrochemical polarization and impedance strategies. Such testimony parameters, for example, shower synthesis, cyclic cathode current densities and numbers of layers were enhanced to acquire superior of coatings to decrease consumption. A critical ascent in the erosion relief of Nano coatings in a few layers was watched when a covering was transformed from a monolayer to many layers. Erosion rate of Nano coatings diminished dynamically with number of layers up to an ideal level, and after that began expanding. The expansion Corrosion rate at a larger amount of layering is because of dissemination of layers as testimony time is short neglecting to give the better erosion insurance. The development of layers, incorporation of silica molecule in multi layer covering lattice were affirmed by the review. At ideal current densities, i.e. at 3.0–5.0 A/cm2, the Zn-Ni-SiO2 covering having 300 layers, spoke to as (Zn-Ni-SiO2)3.0/5.0/300 is observed to be around 107 circumstances more consumption safe than a monolayer Zn-Ni-SiO2 covering, created from a similar shower for a similar time. The reasons in charge of the amplified consumption assurance of MNC Zn-Ni-SiO2 coatings, contrasted with relating monolayer Zn-Ni and (Zn-Ni-SiO2) coatings were dissected, and results were examined

Thermal Stress Analysis of PEEK Fiber Composites at Cryogenic Temperature

Fiber reinforced composites are class of materials that are workable engineering materials possessing high strength to weight ratio resulting in reduction of weight and hence savings in energy. Composites can be tailor -made to the required duty by changing the nature and proportion of the constituent materials. Composites exhibit anisotropy in mechanical and thermal properties. This makes the design of composite structures more complex and demanding. Composites have wide applications as supports and structures at cryogenic temperatures in super conducting magnets and as fuel tankage in spacecraft and rocketry. As these composites are fabricated at 1000 C to 2000 C, ~ their use at low temperatures creates thermal stresses. They become brittle at low temperatures and thermal strain of matrix ma:f be of the same order of the ultimate tensile strain at helium temperature (4.2K); thus leaving no more load bearingcapability

The Makers And The Takers- An Empirical Study on Management Education at Business Schools in Hyderabad

 Indian Economy is progressing at a considerable pace. There are enough number of opportunities in Information Technology, Pharma, BPOs, KPOs, manufacturing and other sectors. It is a fact that the growth of these sectors is dependent on the supply of amply qualified and skilled managers. Many Business Schools and Management Educational Institutions are working in this direction The present study aims to know the initiatives of business schools at Hyderabad in general and ICBM-SBE in specific. The objectives of the study are: to identify some of the dimensions of management education, to know the reasons for low outcomes in some of the conventional MBA colleges and to know the perceptions of the students about the quality of management education programmes at ICBM- SBE. Both primary and secondary data have been used for analysis. The sample size is 525. Purposive sampling is used. Statistical tools such as chi-square test, geometric mean, factor analysis and means scores on three point and five point rating are used for analysis. Two brand equity models, Viz., Brandz Model and Keller’s Model have been adapted. The concluding part of the study states that the quality of management education revolves around three Is viz., Initiatives, Internal Processes and Insights. ICBM – School of Business Excellence which is at the top of the pyramid in both the brand equity models, is well appreciated for the commitment, intertwining information technology with transformation technology and above all for its insight. The makers (The management and staff of ICBM) are quite successful in convincing and drawing the attention of the takers (About 150 recruiters)

Online De-Noising of Radar Data using Multi Resolution Analysis

Target Tracking is an active research area, which encompasses various applications in Defence as well as Commercial applications. For estimating state vectors of tracked objects, Kalman filtering techniques are widely used, and the performance of Kalman filter depends on priory assumptions like state transition models and measurement uncertainties. In practical real time applications, all these priory assumptions are not available always and existing models are not suitable for target dynamics, which have an impact on the tracking quality, and some times filter, may diverge also. Recently Wavelet based multi resolution analysis has become a powerful tool, for image compression and de-noising applications and does not require explicit priory knowledge like Kalman filter for noise suppression. However, It is found that during real time de-noising, wavelet analysis exhibits poor performance due to certain artifacts. In order to improve the performance, a method is proposed and implemented that utilizes variable moving window and symmetric extension techniques

Sustained effectiveness and cost-effectiveness of Counselling for Alcohol Problems, a brief psychological treatment for harmful drinking in men, delivered by lay counsellors in primary care: 12-month followup of a randomised controlled trial

Background Counselling for Alcohol Problems (CAP), a brief intervention delivered by lay counsellors, enhanced remission and abstinence over 3 months among primary care male attendees with harmful drinking in a setting in India. We evaluate the sustainability of the effects after treatment termination, the cost-effectiveness of CAP over 12 months, and the effects of the hypothesized mediator of ‘readiness to change’ on clinical outcomes. Methods and Findings Male primary care attenders aged 18-65 screening with harmful drinking on the Alcohol Use Disorders Identification Test (AUDIT) were randomized to either CAP plus Enhanced Usual Care (EUC) (n=188) or EUC alone (n=189), of whom 89% completed assessments at 3 months and 84% at 12 months. Primary outcomes were remission and daily standard ethanol consumed in the past 14 days; and the proposed mediating variable was readiness to change at 3 months. CAP participants maintained the gains they showed at the end of treatment through the 12-month follow-up, with the proportion with remission (AUDIT<8: 54.3% vs 31.9%; aPR 1.71 [95% CI 1.32-2.22]; p<0.001) and abstinence in the past 14 days (45.1% vs 26.4%; aOR 1.92 [95% CI 1.19-3.10]; p=0.008) being significantly higher in the EUC plus CAP group than in the EUC alone group. They also fared better on secondary outcomes including recovery (AUDIT<8 at 3 and 12 months: 27.4% vs 15.1%; aPR 1.90 [95% CI 1.21-3.0]; p=0.006); and percent of days abstinent (mean% [SD] 71.0 [38.2] vs 55. 0 [39.8]; AMD 16.1 [95% CI 7.1-25.0]; p=0.001). The intervention effect for remission was higher at 12 months compared to that at 3 months (aPR 1·50 [95% CI 1·09–2·07]. There was no evidence of an intervention effect on Patient Health Questionnaire-9 score, suicidal behaviour, percentage days of heavy drinking, Short Inventory of Problems score, WHO Disability Assessment Schedule II score, days unable to work, and perpetration of intimate partner violence. Economic analyses indicated that CAP was dominant over EUC alone, with lower costs and better outcomes; uncertainty analysis showed a 99% chance of CAP being cost-effective per remission achieved from a health system perspective, using a willingness to pay threshold equivalent to one month’s wages for an unskilled manual worker in Goa. Readiness to change levels at 3 months mediated the effects of CAP on mean daily drinking at 12 months (Indirect effect -6.014, 95% CI -13.99- to -0.046). Serious adverse events were infrequent and prevalence was similar by arm. The methodological limitations of this trial are the susceptibility of self-reported drinking to social desirability bias, the modest participation rates of eligible patients, and examination of mediation effects of only one mediator and in only half of our sample. Conclusions CAP’s superiority over EUC at the end of treatment was largely stable over time and mediated by readiness to change. CAP provides better outcomes at lower costs from a societal perspective