Dynamic Resource Management for Cellular Cognitive Networking

Mobile networks are going to experience some major changes in the coming years in order to hold the continuously increasing load which is engendered by the increasing phones. And among those, the one which is more dynamic to the network assets is the Cognitive networking, which help to adopt to the mobile demands in consuming resources. Cognitive networking techniques have the capability of mining huge amounts of mobile traffic data collected in the network. So that it understands the resource utilization of current status of network at automatically. The proposed work is to analyze the allocation of the assets in the cognitive network, fabricate the profile on demand and avoid unusual situations in networks. And to evaluate this framework , real world mobile traffic datasets are used.And even singles out a large number of outlying behaviors in real world mobile traffic datasets, which are mapped to social events or technical issues in the network

Bridgeless SEPIC Converter Based Computer Power Supply Using Coupled Inductor

Switched Mode Power Supplies (SMPS) are used as power source for computers. Conventional SMPS used in computers are suffered by some serious problems such as poor power quality, high device stress, slow dynamic response, high harmonic contents, periodically dense, peak currents, distorted input current. To minimize these problems, a non-isolated bridgeless buck-boost single ended primary inductance converter (SEPIC) using coupled inductor is introduced at the front end of the SMPS, which is operated in discontinuous conduction mode (DCM). This proposed technique reduces the Total Harmonic Distortion(THD), which results in power factor improvement. The DC output voltage of the SMPS is almost a constant voltage which is regulated by means of the proposed SEPIC converter. For obtaining different dc voltage levels for the PC applications, the output of the front end SEPIC converter is fed to the half-bridge DC-DC converter. The output voltages of the SMPS are controlled by controlling any one of the output voltages. Design and simulation of the proposed converter are carried out using the MATLAB/simulink software

Preliminary Phytochemical Screening and Antibacterial Studies on the Ethanolic Leaf Extract of \u3cem\u3eNyctanthes arbortristis\u3c/em\u3e Linn.

Nyctanthes arbortristis Linn. is extensively used in Indian traditional and folklore medicines to cure various human ailments. The preliminary phytochemical screening of the leaves revealed the presence of alkaloids, tannins, flavonoids, cardiac glycosides and sugars. In vitro antibacterial studies on the ethanolic leaf extracts were carried out on ten medically important bacterial strains, including Salmonella typimurium, Pseudomonas aeruginosa, Klebsiella pneumonia, Escherichia coli, Psudomonas sp. Staphylococcus epidermis, Micrococcus luteus, Staphylococcus aureus, Streptococccus sp. and Bacillus subtilis, which were procured from the Microbial Type Cultrue and Collection, Chandigarh, India, using agar disc diffusion method. The bacterial strains were exposed to the following four different concentrations of extracts: 50mg/ml, 100mg/ml, 200mg/ml and 300mg/ml solvent. The results of our antibacterial assay revealed that the extract showed good inhibitory activity against all the tested pathogens compared with standard antibiotics like streptomycin and penicillin. The inhibitory activity was found to be dose dependent

Evaluation of Mechanical and Metallurgical Properties of Dissimilar Materials by Friction Welding

AbstractFriction welding has been widely used to metals with dissimilar materials due to solid state joining process and shows good mechanical properties. In this study, the effect of mechanical and metallurgical properties of austenitic stainless steel (304L) and copper were experimentally investigated by tensile and hardness test while the metallurgical properties of optical, scanning electron microscopy and atomic force microscopy was used to analyze the microstructure of the welded joint. The joints were also examined with EDX line in order to understand the phases formed during welding. The material is evaluated by tensile test and their strength is determined and the hardness test measurements are examined in base metal and heat affected zone. The bonded materials of austenitic stainless steel and copper joint were produced by varying the friction pressure, upset pressure and rotational speed through Taguchi's orthogonal array. The highest tensile strength obtained in friction welded joint was 2.52% higher than parent material of copper. The effects of metallurgical characterization are discussed based on the microstructural studies

A Study of Cardiac Troponin T- in Acute Exacerbation of Chronic Obstructive Pulmonary Disease

COPD is a leading cause of morbidity and mortality worldwide. Currently ranked as 4th leading cause of death worldwide. OBJECTIVE: This study was aimed to evaluate the incidence of cTnT elevation in COPD exacerbation patients and to see if cardiac troponin T has prognostic significance during an acute exacerbation of COPD. Design: Prospective study. Participants: Sample of 50 adult patients (both male and female) admitted to Government Rajaji Hospital, Madurai with signs and symptoms of acute exacerbation of COPD. METHODS: Blood samples for cTnT were measured on admission and 24 hrs later using quantitative assay by ELISA method. Levels above 0.017 μg / L were taken as positive. Demographic data, history & symptoms were recorded. Clinical examination & investigations were done on each patient. RESULTS: 19 patients had elevated cTnT levels. They were divided into two groups, group 1 included patients with cTnT positive, group 2 with cTnT negative. All patients had increased breathlessness. Majority was males, M: F = 11.5: 1. 58% were current smokers. Mean duration of COPD was high (6.42yrs) in group 1 as well as mean SpO2 was 75% (low) in group 1. RA, RV dilation & severe pulmonary hypertension were higher in group 1. cTnT elevation significantly correlated with ICU admission, need for ventilator, ICU & hospital stay duration. CONCLUSION: cTnT is elevated in significant subset of patients with COPD exacerbation. Among them, COPD duration was high, mean SpO2 was low. It was an independent predictor of need for ICU admission and ventilator support. Significant difference in length of stay in ICU (or) hospital was found among two groups. It can be used as marker to identify patients at higher risk at the time of admission

Effect of seaweed extract on rice (Oryza sativa var. ADT53) productivity and soil fertility in Cauvery delta zone of Tamil Nadu, India

The monocropping of rice in the Deltaic zone deteriorates soil health and crop productivity. Seaweeds are marine resources easily available at negligible cost and also rich in bioactive compounds. A field experiment was conducted at Cauvery Delta zone of Tamil Nadu during summer season2021 to evaluate the bio-efficacy of Seaweed extract on growth, yield, and soil properties of rice, Oryza sativa var. ADT53. The experiment was framed in RBD comprising of 12 treatments viz., soil application of Seaweed extract(SWE) @ 12.5kg/ha,25kg/ha, 37.5kg/ha , foliar spraying of SWE gel & liquid @ 0.5% twice at tillering and panicle initiation stages, a combination of soil application and foliar spray and fertilizer alone. Experimental findings revealed that the soil application of SWE  @ 12.5kg/ha along with a foliar spray of seaweed liquid recorded higher plant height (121.1cm),dry matter production (11390kg/ha),yield attributes viz., number of grains per panicle (166), panicle length (21.8 cm), thousand grain weight (14.7g), number of productive tillers per m2 (275), grain yield (5612 kg/ha)and straw yield (7829 kg/ha). However, The soil application of SWE @ 25kg/ha recorded higher soil available nutrients viz.,N(260 kg/ha);P(42kg/ha); K(170kg/ha);Ca(27.7meq/100g); Mg(5.5meq/100g);S(18.2mg/kg);Zn (1.17ppm); Fe (33.82ppm); Cu(1.61ppm);Mn(18.97ppm).The study will help sustain rice productivity and soil fertility in the deltaic zone of Tamil Nadu. The soil application of seaweed extract @ 12.5kg/ha along with foliar spraying (0.5% twice) could be a promising option in the rice ecosystem

A LITERARY REVIEW OFTHE CONTENTS OF THULASI ENNAI (PEDIATRIC SIDDHA FORMULATION) IN THE MANAGEMENT OF PEDIATRIC BRONCHIAL ASTHMA

Objectives: The purpose of this review article is focused on the photochemical constituents and therapeutic potential of Thulasi Ennai to combat pediatric bronchial asthma. Methods: The electronic databases such as Google Scholar, Medline/PubMed, Web of Science, Science Direct, Scopus and Directory of Open Access Journals (DOAJ), and reference lists have been looked to identify publications pertinent to the individual herbs of Thulasi Ennai. Results: The pharmacological effects of the herbs found in Thulasi Ennai possess anti-asthmatic, anti-inflammatory, antibacterial, antiviral, and other pharmacological effects relevant to the management of bronchial asthma. Conclusion: The present review concluded the safety of the Thulasi Ennai in preclinical studies. Further, clinical studies of Thulasi Ennai would need to be performed in humans to assess the efficacy of Thulasi Ennai

A Review of Friction Welding Research to Address the Influence, Development, Similar & Dissimilar Welding

This review paper discusses the recent research work carried out in the frictional joining of dissimilar and similar alloys through the friction welding (FW) process with various parameters and modifications. It includes further the latest developments and advances in the research on FW and the influences of FW’s process parameters on the quality of joints and their properties. The specimens’ faying surfaces can also influence the joint properties as the surface modifications stimulate or change the metal joints’ bonding according to the welding parameters selected during FW. Though the rise of friction pressure (FP) during FW improves the strength of the joints, the improper selection of parameters leads to metal damage. It feels better if the axial shortening is less than 30 mm for FW of soft metals. The axial shortening values are less than 25 mm for the hemispherical bowl-type faying surfaces under 18 bar FP and it is noted that the bevel-type tapered faying surfaces increase the shortening. FW provided very narrow weld interfaces with around 5-10 µm width. With a low FP, it was possible to obtain a maximum of 100 % efficiency by modifying their faying surfaces. The small-diameter soft material needs less FP and friction time. The microstructure modification is possible and the weld joint is shown as U and V shapes for the bowl and tapered faying surfaces. It further increases the contact area and thus increases strength

Isolation, characterisation and in vitro screening of anticataract potential of Fucoidan from Sargassum wightii Greville

Introduction: The present study was designed to isolate Fucoidan from Sargassum wightii Greville and to evaluate its in-vitro anti cataract potential against galactose induced cataract in isolated goat lenses. Methods: Fucoidan was isolated from S. wightii Greville and its sulfate content was estimated through barium chloride method. Isolated goat lenses were divided into 5 groups as group-I (normal control- vehicle treated), group-II (disease control- galactose treated 55 mM), group-III (galactose 55 mM + standard-ascorbic acid 20 μg/mL), group-IV (galactose 55 mM + Fucoidan-20 μg/mL) and group-V (galactose 55 mM + Fucoidan 40 μg/mL) and incubated for 72 hours, respectively, and subjected to biochemical estimations. The opacity of lenses was also noted prior to biochemical estimation. Results: The percentage yield of isolated Fucoidan was found to be 0.65%. The extent of sulfation in the isolated Fucoidan was found to be as high as 33%. In high-performance thin-layer chromatography (HPTLC) studies, Peak 3 with Rf value of 0.18 matched with the standard D-glucose Rf value. Galactose induced cataractous lenses showed significant oxidative stress when compared to normal lenses whereas treatment with Fucoidan 20 and 40 μg/mL significantly combated oxidative stress and prevented the development of cataract when compared to cataractous lenses. The results obtained with the treatment of Fucoidan were dose dependant and comparable to standard. Conclusion: The present study substantiates the claim of anti-cataract potential of Fucoidan, which may be correlated to its anti-oxidant property