A review on various optimization techniques of resource provisioning in cloud computing

Cloud computing is the provision of IT resources (IaaS) on-demand using a pay as you go model over the internet.It is a broad and deep platform that helps customers builds sophisticated, scalable applications. To get the full benefits, research on a wide range of topics is needed. While resource over-provisioning can cost users more than necessary, resource under provisioning hurts the application performance. The cost effectiveness of cloud computing highly depends on how well the customer can optimize the cost of renting resources (VMs) from cloud providers. The issue of resource provisioning optimization from cloud-consumer potential is a complicated optimization issue, which includes much uncertainty parameters. There is a much research avenue available for solving this problem as it is in the real-world. Here, in this paper we provide details about various optimization techniques for resource provisioning

Studies on the structural, morphological and optoelectrical properties of spray deposited CdS:Pb thin films

AbstractUndoped and Pb-doped CdS (CdS:Pb) thin films were prepared on glass substrates by a spray technique using a perfume atomizer. The effects of Pb doping on the structural, morphological and optoelectrical properties of CdS thin films were studied. All of the films are polycrystalline in nature exhibiting hexagonal crystal structure. Crystallite size estimated from the Scherrer formula increased from 18.42 nm to 34.76 nm with increases in Pb doping concentration. The expansion of lattice parameters experienced with Pb doping might be due to the larger ionic radius of Pb2+ ions compared to that of the host Cd2+ ions. Increased optical transparency is observed for the doped films and the optical band gap experienced band bowing with increase in Pb doping concentration. Electrical resistivity values of the films were found to be on the order of 101 Ω cm. From the obtained results, it is observed that the CdS thin film coated with 6 wt.% Pb doping concentration exhibit better structural, morphological, optical and electrical properties

A Review on Resource Provisioning Algorithms Optimization Techniques in Cloud Computing

Cloud computing is the provision of IT resources (IaaS) on-demand using a pay as you go model over the internet. It is a broad and deep platform that helps customers builds sophisticated, scalable applications. To get the full benefits, research on a wide range of topics is needed. While resource over provisioning can cost users more than necessary, resource under provisioning hurts the application performance. The cost effectiveness of cloud computing highly depends on how well the customer can optimize the cost of renting resources (VMs) from cloud providers. The issue of resource provisioning optimization from cloud-consumer potential is a complicated optimization issue, which includes much uncertainty parameters. There is a much research avenue available for solving this problem as it is in the real-world. Here, in this paper we provide details about various optimization techniques for resource provisioning

Occurrence of the near threatened Tiger shark, Galeocerdo cuvier Peron and Lesueur, 1822 from Cuddalore coastal waters, Tamil Nadu, southeast coast of India

1298-1301Galeocerdo cuvier Peron and Lesueur, 1822 is a tiger shark, a common predatory shark distributed in temperate and tropical countries globally. G. cuvier is also synonymised as G. arcticus (Faber, 1829) and G. rayneri (Mc Donald & Barron, 1868). We report the first observation of one male and one female tiger shark captured by otter trawler at Mudasalodai landing centre, Cuddalore coastal waters, southeast coast of India. Sex was identified by the presence of pair of claspers observed in the ventral side. Male specimen weighed about 1.9 kg and female weighed about 1.65 kg. The morphometric characters of the shark were measured and tabulated. The present study confirmed the occurrence of G. cuvier along the southeast coast of India particularly in the Tamil Nadu coastal waters

Seed germination ability and protein profiling of salt marsh plants at different concentration of sodium chloride

757-765Soil salinity is an increasing problem in agriculture throughout the world. The utilization of halophytic plants for pasture and fodder production in saline soils is the only economic solution presently available. The present study discusses the effects of different concentrations of sodium chloride on seed germination and its impact was determined by protein profiling on Sesuvium portulacastrum, Suaeda maritima and Salicornia brachiata. Seeds germination was substantially delayed and reduced with an increase in NaCl to above threshold level. Changes in the pattern of protein expression were found to be prominent between control and NaCl treated seeds.pproximately 42 kDa, 26 kDa and 20 kDa were found to be up-regulated as the concentration of salt increases in Sesuvium portulacastrum. Whereas, significant variation in the protein patterns were observed in Suaeda maritima such as ~20 to 30 kDa protein bands were not visible and protein band of 55 kDa was particularly increased after 300 mM NaCl treatment. Similarly in Salicornia brachiata expression of 45 kDa protein was up regulated and approximately 25 kDa protein expression was down regulated as the concentration of salt increased to about 1.5 M, 2 M and 2.5 M. However, the upper limit for the survival of the seedling was 200 mM, 300 mM and 1 M for Sesuvium portulacastrum, Suaeda maritima and Salicornia brachiata, respectively. On the basis of the present investigation, this study suggests that optimal application of NaCl can benefit plant growth on stress tolerance studies and also helps for further investigation of the salt tolerance networks

Extracellular Hsp72 concentration relates to a minimum endogenous criteria during acute exercise-heat exposure

Extracellular heat-shock protein 72 (eHsp72) concentration increases during exercise-heat stress when conditions elicit physiological strain. Differences in severity of environmental and exercise stimuli have elicited varied response to stress. The present study aimed to quantify the extent of increased eHsp72 with increased exogenous heat stress, and determine related endogenous markers of strain in an exercise-heat model. Ten males cycled for 90 min at 50% O2peak in three conditions (TEMP, 20°C/63% RH; HOT, 30.2°C/51%RH; VHOT, 40.0°C/37%RH). Plasma was analysed for eHsp72 pre, immediately post and 24-h post each trial utilising a commercially available ELISA. Increased eHsp72 concentration was observed post VHOT trial (+172.4%) (P<0.05), but not TEMP (-1.9%) or HOT (+25.7%) conditions. eHsp72 returned to baseline values within 24hrs in all conditions. Changes were observed in rectal temperature (Trec), rate of Trec increase, area under the curve for Trec of 38.5°C and 39.0°C, duration Trec ≥ 38.5°C and ≥ 39.0°C, and change in muscle temperature, between VHOT, and TEMP and HOT, but not between TEMP and HOT. Each condition also elicited significantly increasing physiological strain, described by sweat rate, heart rate, physiological strain index, rating of perceived exertion and thermal sensation. Stepwise multiple regression reported rate of Trec increase and change in Trec to be predictors of increased eHsp72 concentration. Data suggests eHsp72 concentration increases once systemic temperature and sympathetic activity exceeds a minimum endogenous criteria elicited during VHOT conditions and is likely to be modulated by large, rapid changes in core temperature

Polarized Neutron Reflectometry of Nickel Corrosion Inhibitors.

Polarized neutron reflectometry has been used to investigate the detailed adsorption behavior and corrosion inhibition mechanism of two surfactants on a nickel surface under acidic conditions. Both the corrosion of the nickel surface and the structure of the adsorbed surfactant layer could be monitored in situ by the use of different solvent contrasts. Layer thicknesses and roughnesses were evaluated over a range of pH values, showing distinctly the superior corrosion inhibition of one negatively charged surfactant (sodium dodecyl sulfate) compared to a positively charged example (dodecyl trimethylammonium bromide) due to its stronger binding interaction with the surface. It was found that adequate corrosion inhibition occurs at significantly less than full surface coverage.X-ray photoelectron spectra were obtained at the National Engineering and Physical Sciences Research Council (EPSRC) XPS User’s Service (NEXUS) at Newcastle University, an EPSRC midrange facility. NR data were obtained on the D17 instrument, and samples were treated in the laboratories of the Partnership for Soft Condensed Matter (PSCM) at the Institut Laue-Langevin. M.H.W. is grateful for funding from the Oppenheimer Trust.This is the final version of the article. It first appeared from the American Chemical Society via http://dx.doi.org/10.1021/acs.langmuir.5b0171

Phase II Non-Randomized Open Clinical Evaluation of Siddha Medicine Pippalyathi Mathirai for the Management of Swasakasam (Bronchial Asthma)

An open clinical evaluation of siddha medicine Pippalyathi mathirai for Swasakasam (Bronchial asthma) was conducted from 2019 to 2022 in the Post Graduate Department of Maruthuvam in Govt. Siddha Medical College attached with Arignar Anna Govt. Hospital of Indian Medicine and Homeopathy, Chennai–106. A total of 40 cases were treated in Outpatient department. The clinical and Pathological assessment was carried out on the basis of Siddha and Modern aspects. All the patients were treated with Pippalyathi mathirai 1 tablet /bd after food for duration of 48 days. The responses were assessed once in 7 days for all the patients. The toxicological study revealed no toxicity was found in trial medicine Pippalyathi mathirai. The pharmacological study of Pippalyathi mathirai shows Bronchodilator activity in Milk Induced Leucocytosis in Mice. Most of the subjects were Male patients about 57.5 %. The peak incidence of Swasakasam was in the age group 40–60 years (17%) in both sexes. The patients occupation are working in Cement factories (7.5%), drivers (5%), farmers (7.5%), government staffs (10%), home makers (12.5%), hotel (10%), IT profession (5%), painters (7.5%), shop keepers (12.5%), students (7.5%), tailors (7.5%), teacher (2.5%), traffic police (5%). The prevalence was higher among the lower income group (48%) and middle income group (40%). Most of the patients have chronic history (82.5%). Majority of the patient follows mixed dietary habits (82.5%) Nearly 77.5 % have no relevant family history. Swasakasam is primarily due to the derangement of Iyyam and Vatha kutram. The study medicine Pippalyathi Mathirai has predominating kaarpu suvai and kaippu which neutralizes the deranged Iyya kutram. From the preclinical toxicity studies, the study revealed no toxicity and proved to be safe. From the pharmacological studies, it is evident that the study medicine Pippalyathi mathirai had Bronchodilator activity. No adverse effect was reported during the course of the treatment. The study medicine Pippalyathi mathirai reduces the frequency of wheeze attacks and gave maximum relief from the symptoms of Swasakasam. The study medicine Pippalyathi mathirai shows good improvement in Peak Expiratory Flow Rate. Therefore the author conclude that, the study medicine Pippalyathi mathirai could be a better solution for Swasakasam (Asthma)