Decolorization of Textile Effluents Applying Sequential Operation of Prepared Activated Carbons

Three activated carbons were prepared from bio-waste material and their adsorption efficiency in removal of textile effluents was tested. During sequential operation of these carbons, textile effluents were decolorized with better results like 7, 5 and 3 m-1 absorbance at wavelengths of 436, 525 and 620 nm respectively. 2 g of each adsorbent and at optimum contact time of 40 min removed 93% of color form collected textile effluents

A Domestic Case Studies Probability to Overcome Software Failures

Computers are the pervasive technology of our time. As computer become critically tied to human life, it also becomes more important that interactions with them are under control. They are no longer a novelty, but are integrated into the fabric of our world, performing both high and low-level tasks. That is, computers may be used to eliminate heavy, redundant work and more. Sophisticated machines have been deployed to perform remote surgery or detect subterranean landmines in repopulated civilian areas. The increasing importance of computers in our lives means that it is essential that the design of computer systems incorporates techniques that can ensure reliability, safety and security. This paper will examine technological mishaps involving the use of computers. This review will include notorious software bugs that have affected finance, communication, transit, defense, health and medicine and others systems or industries. The sequence and etiology of these accidents will be discusses as well as how catastrophes may be avoided in the future through lessons and practices based on research

Multi User Diversity Evaluation in MIMO HSDPA Downlink Channels

A multiple transmit antenna, single receive antenna (per receiver) downlink channel with limited channel feedback is considered. Given a constraint on the total system-wide channel feedback, the following question is considered: is it preferable to get low-rate feedback from a large number of receivers or to receive high-rate/high-quality feedback from a smaller number of (randomly selected) receivers. Acquiring feedback from many users allows multi-user diversity to be exploited, while highrate feedback allows for very precise selection of beamforming directions. It is shown that systems in which a limited number of users feedback high-rate channel information significantly outperform low-rate/many user systems. The marginal benefit of channel feedback is very significant up to the point where the CSI is essentially perfect

An Efficient Pdp Scheme For Distributed Cloud Storage To Support Dynamic Scalability On Multiple Storage Servers

The confirmation examination without downloading makes it particularly important for large-size files and folders typically including many clients’ files to make sure whether these data have been tampered with or deleted without downloading the latest version of data. Provable data possession is such a probabilistic proof technique for a storage provider to establish the integrity and ownership of clients’ data without downloading data. Consequently it is able to put back traditional hash and signature functions in storage outsourcing. Various PDP schemes have been recently proposed such as Scalable PDP and Dynamic PDP. Though these schemes mainly focus on PDP issues at untrusted servers in a single cloud storage provider and are not appropriate for a multi-cloud environment.  Furthermore clients need to know the exact position of each file block in a multi-cloud environment.  The confirmation process in such a case will lead to high communication overheads and calculation costs at client sides as well. Consequently it is of utmost necessary to design a cooperative PDP model to decrease the storage and network overheads and improve the transparency of verification activities in cluster-based cloud storage systems. A cooperative PDP scheme should give features for timely detecting abnormality and renewing multiple copies of data

Optimal Design of Hybrid Microgrid for Off Grid Villages

The Microgrid is a small scale transmission and distribution of power. Microgrid is mostly implemented in the rural villages and remote places which are not accessed by the normal conventional grid. The generation capacity of the micro grids will be less compared to the conventional grids as the demand is also significantly less. The renewable energy source acts as the major generation source for the microgrid when compared to the non-renewable sources. Some of the renewable sources which are used for generation in micro grids are wind, solar, small hydro, biomass etc. Since the renewable energy sources are not instantaneous for the microgrid to supply the load more efficiently and continuously the hybrid sources are required. In hybrid sources two different types of sources are considered in which one will be the conventional source and another will be the non-conventional source. The present work describes the design of a hybrid microgrid system for a remote off grid village in Myanmar. The hybrid microgrid consists of locally available primary energy source (photovoltaic) and diesel generator as a backup source. The main objective of the project is to design a system based on the locally available renewable energy source to electrify the village. To design the system, the energy requirement of the village, the current energy consumption and future demand is estimated through door to door survey. Based on the survey data the system is designed and installed

Effect of carbon nanofibre addition on the mechanical properties of different Vf carbon-epoxy composites

Carbon-epoxy (C-epoxy) laminated composites having different fibre volume fractions (40, 50, 60 and 70) were fabricated with and without the addition of aminofunctionalized carbon nanofibres (A-CNF). Flexural strength, interlaminar shear strength (ILSS) and tensile strength of the composite laminates were determined. It was observed that, the ability of A-CNF to enhance the mechanical properties of C-epoxy diminished significantly as the fibre volume fraction (Vf) of the C-epoxy increased from 40 to 60. At 70Vf, the mechanical properties of the ACNF reinforced C-epoxy were found to be lower compared to the C-epoxy composite made without the addition of A-CNF. In this paper suitable mechanisms for the observed trends are proposed on the basis of the fracture modes of the composite

Study on the qualitative assessment of in-vessel food waste compost by indexing method

The consumption of different food-based goods produces a considerable amount of waste that needs to be conserved in an eco-friendly manner. A study was carried out on food waste compost made from the in-vessel compost process for use in agriculture and its marketability for its fertility and contamination potential. Food waste samples were collected from the canteen and hostels of GITAM University,  Visakhapatnam (Andhra Pradesh), India and were transferred to a 125Kg in-vessel food waste composter (Molten Mind F125) and allowed to digest for 24 hrs followed by curing for seven days. After curing, the samples were characterized for nutrient content for fertility index (FI) and heavy metal contamination for clean index (CI). The compost quality index was derived from FI and CI to assess its suitability for agriculture. The pH of the food waste compost sample was reported as 8.4 and the C/N ratio was 28, which was higher than the standard ratio (15-20). The other physicochemical characteristics were analyzed using the standard methods and the concentration of metals was analyzed using Inductively Coupled Plasma Mass Spectrometry ( ICPMS). From the analysis, it was evident that heavy metal concentrations were well within the permissible limits. Further, the compost was characterized to know the fertility index (FI) and contamination index (CI) and its suitability to the soil. FI value was reported as more than 3.1 and CI value more than 4, which indicated that compost was best in quality, having high-value potential and low heavy-metal content, which will be suitable for high-value crops such as organic farming.

Adenocarcinoma of Nictitans Gland in a Cow- A Case Report

A 7 year old cow was presented to the College of Veterinary Science clinic (Sri Venkateswara Veterinary University, Tirupati, India), with the history of growth appeared on the third eyelid of the left eye. The mass was surgically excised, and subjected to histopathological examination. Histopathological examination revealed lobules of irregular size and shape with proliferated cells, which were arranged as small tubules with or without necrotic centers. Cells were anaphylactic, large and irregular with hyperchromatic nuclei. Acini showed many layers of cells with papillary projections. Mitotic figures were also present