Desuperheater Temperature Control System Using Distributed Control System (DCS)

The Control System for Desuperheater Temperature of Boiled water is a critical task in industry. In this Paper reviews the study and collection of measurement datas from in TNPL ( Tamil Nadu Newsprint and Papers Limited) Power Plant , there are three sections namely Deaerator tank, Boiler and Turbine. I have done this work in the turbine section. The steam f rom the Boiler is at very High Temperature. The temperature of this high temperature steam is lowered by spraying the oxygen dissolved water using Desuperheater. The spraying water is controlled by Distributed Control System ( DCS ). The Input to the turbine is at High Temperature and High Pressure steam. The output of the turbine is mentioned in Mega Watts. When the superheated steam is given to the turbine then the Temperature and Pressure output steam condition is Low. The Low level steam is fed to the Desuperheater depends upon requirements in the various units. It is supplied to each section in TNPL

Photoconduction in Alq3

Photoelectronic properties of Alq3 were studied by photoconductivity measurements in thin film, sandwich (ITO/Alq3/LiF/Al) devices. We find that the photocurrent is dominated by bulk generation of carriers for incident photon energies greater than 2.75 eV. The quantum efficiency of photocarrier generation has been measured from carrier collection measurements to be about 10%. The quantum efficiency is largely independent of electric field. This enables a direct measurement of the electric field dependence of mobility using photoconductivity measurements, which is used for quantitative analysis of the dark forward current in these devices. Photoconductivity measurements were also used to obtain (\mu_{0n} \tau_n) product which can be used as a measure of material quality. For Alq3, we find that the value of (\mu_{0n} \tau_n) product was between 3x10^{-15} cm^2/V to 8x10^{-15} cm^2/V for different samples. In forward bias, at high field the photocurrent shows saturation accompanied by a phase shift. These effects are attributed to space charge effects in the device.Comment: 12 figure

Blue and white light electroluminescence in a multilayer OLED using a new aluminium complex

Synthesis, structure, optical absorption, emission and electroluminescence properties of a new blue emitting Al complex, namely, bis-(2-amino-8-hydroxyquinolinato), acetylacetonato Al(III) are reported. Multilayer OLED using the Al complex showed blue emission at 465 nm, maximum brightness of ~ 425 cd/m2 and maximum current efficiency of 0.16 cd/A. Another multilayer OLED using the Al complex doped with phosphorescent Ir complex showed 'white' light emission, CIE coordinate (0.41, 0.35), maximum brightness of ~ 970 cd/m2 and maximum current efficiency of 0.53 cd/A

Benthic communities of mesophotic coral ecosystem off Puducherry, east coast of India

The shallow coral reef ecosystems along the Indian coast are being threatened by anthropogenic global ocean warming and increased frequency of coral bleaching in the recent past. Identification and conservation of deeper reef habitats are essential as they serve as a source of larvae and livestock to replenish the shallow reef habitats. Information on the location and spatial extent of the mesophotic coral ecosystems (MCEs) and their biodiversity is poorly known in the continental shelf of the east coast of India. In this study, we have documented the species diversity of MCEs at a depth of 30–40 m off Puducherry along the east coast of India. In total, 12 species of corals, including 5 black corals and 16 octocorals, 4 species of sponges and 31 species of coral-associated benthopelagic fish species were recorded. Subergorgia sp. was the most dominant species of octocorals and found extensively as gorgonian forests. The MCEs reported in this study raise important questions about the origin and connectivity of the coral populations in this region to the other major coral reef ecosystems along the east coast. Understanding the physical processes and hydrographic features around the MCEs, off Puducherry will reveal more information about the distribution and colonization of coral communities and their vulnerability to changes in future

All inorganic based Nd0.9Mn0.1FeO3 perovskite for Li-ion battery application: Synthesis, structural and morphological investigation

Mn doped perovskite structured Nd0.9Mn0.1FeO3 nanoparticles have been successfully prepared using hydrothermal method in aqueous medium. The structural and morphological properties were investigated using XRD, SEM, FE-SEM, and TGA. After establishing the structure and morphology of the compound, thorough investigation into elemental composition with the use of EDX and XPS were carried out. Microstructure arrangement was done with the use of HR-TEM while the BET analysis confirmed the high surface area of the nanoparticles. The structural information was further investigated by AFM. The average particle size of Nd0.9Mn0.1FeO3 nanoparticles increased from 60 to 100 nm with increasing annealing temperature from 500 to 1000 �C, respectively. The structural characterizations confirmed the perovskite nanoparticles to be crystalline orthorhombic structure. Moreover, the new material was explored as anode material for Li-ion battery. The galvanostatic cycling measurement shows that the cells possess reversible specific capacity of 763 mAhg�1 at a current density of 0.5 A g�1 after 100 cycles. The charging and discharging profiles shows that the compound of this kind could be future candidate for electrode material

Efficacy of an Extract of Ocimum tenuiflorum (OciBest) in the Management of General Stress: A Double-Blind, Placebo-Controlled Study

A randomized, double-blind, placebo-controlled study was conducted to evaluate the efficacy of OciBest, an extract of Ocimum tenuiflorum Linn. in symptomatic control of general stress. The participants received either placebo (n = 79) or OciBest (n = 71; 1200 mg of actives per day) for six weeks. The severity of stress-related symptoms was self-evaluated by patients at weeks 0, 2, 4 and 6 of the trial period using a symptom rating scale. After six weeks of intervention, scores of symptoms such as forgetfulness, sexual problems of recent origin, frequent feeling of exhaustion, and frequent sleep problems of recent origin decreased significantly (P ≤ 0.05) in OciBest group as compared with placebo group. Also, the total symptom scores of OciBest group revealed significant reduction (P ≤ 0.05) as compared to placebo group. The overall improvement in OciBest group was found to be 1.6 times or 39% more in the control of general stress symptoms with respect to placebo. No adverse events were reported during the study. The findings revealed that OciBest was found to be effective and well tolerated by all the patients over the six weeks of study period