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NAU
Navsari, India

Okezie C.C.,NAU
IEEE International Conference on Adaptive Science and Technology, ICAST | Year: 2015

With the astronomical growth in online presence vis-à-vis the IT industry across the globe, there is an urgent need to evolve cloud based DataCenter architectures that can rapidly accommodate web application integrations which can serve the energy industries, educational sector, finance sector, manufacturing sector, etc. Previous works in DataCenter domain have not investigated on cloud based DataCenter Servercentric characteristics for evaluation studies. This paper then proposed a Reengineered DataCenter (R-DCN) architecture for efficient web application integration. In this regard, attempt was made to address network scalability, efficient and distributed routing, packets traffic control, and network security using analytical formulations and behavioural algorithms having considered some selected architectures. In this work a simulation experiment was carried out to study six key performance metrics for all the architectures. It was observed that the network throughput, fault-tolerance/network capacity, utilization, latency, service availability, scalability and clustering effects of R-DCN responses with respect to above Key Performance (KPIs) metrics were satisfactory when compared with BCube and DCell architectures. Future work will show a detailed validation using a cloud testbed and CloudSim Simulator. © 2014 IEEE. Source


Sandipan P.B.,Niger Research Station NRS | Patel N.A.,NAU | Jagtap P.K.,Niger Research Station NRS | Patel M.C.,Niger Research Station NRS
Rasayan Journal of Chemistry | Year: 2014

Fruits and vegetables are important for human nutrition. They are also indispensible for the maintenance of human health and tomato (Lycopersicon esculentum Mill.) is one of them. A great damage is caused to tomato fruits in the field, during transit storage and thus marketed by fungal rots followed by the bacterial rots, which are responsiblefor decaying the tomato fruits. Here, leaf extracts of five plant species were tested against fruit rot of tomato caused by Alternaria tomato. In pre-treatment, after seven days of incubation, the lesion diameter was 24.27, 31.90, 34.03,39.07 and 43.33 mm in leaf extracts of datura (Datura stramonium), neem (Azadirachta indica), garlic (Alliumsativum), nilgiri (Eucalyptus citridora) and lantana (Lantana camera), while in case of post-treatment, all thephytoextracts significantly reduced the fruit rot of tomato over control. After seven days of incubation, the lesiondiameter was 28.00, 36.00, 37.17, 45.07 and 46.93 mm in leaf extracts of datura (Datura stramonium), neem(Azadirachta indica), garlic (Allium sativum), nilgiri (Eucalyptus citridora) and lantana (Lantana camera)treatments respectively. For spore germination test, similar extracts of various plant species with suitable controlwere screened in vitro to know their inhibitory effect on the spore germination of Alternaria tomato. Here, all thephytoextracts efficiently reduced the spore germination over the control. The unsterilized leaf extract of datura(Datura stramonium) proved strongly inhibitory (10.90%) followed by neem leaf extract (Azadirachta indica)(19.23%), garlic (Allium sativum) (24.50%), nilgiri (Eucalyptus citridora) (29.12%) and lantana (Lantana camera)(44.54%) respectively ©2014 RASĀYAN. All rights reserved Source


Mote B.M.,Agricultural Meteorological Cell | Kumar N.,Agricultural Meteorological Cell | Ban Y.G.,NAU
Plant Archives | Year: 2015

Field experiment was conducted during kharif season of 2012 at College Farm of N. M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), India; to study the agrometeorological indices of rice cultivars. The treatment consisted of three cultivars viz., V1 (Jaya), V2 (Gurjari) and V3 (GNR-2) with three dates of sowing viz., D1 (12 July 2012), D2 (27 July 2012) and D3 (11 August 2012). The agrometeorological indices viz., photothermal units (PTU), heliothermal units (HTU), photothermal index (PTI), energy degree unit (EDU) were work out for different phonological stages of the rice cultivars under different environment. Results revealed that the first date of sowing in cv. Jaya from emergence to physiological maturity significantly higher value of total (PTU °C day hr), (HTU °C day hr), PTI(°C day hr) and (EDU leangle day -1) were observed i.e. 33311.3°C day hr, 129990.7°C day hr, 111.2°C day hr and 95060868 leangle day-1 followed by second date of sowing 31244.6°C day hr, 12138.6°C day hr, 108.5°C day hr and 86902882 leangle day-1 and third date of sowing 28814°C day hr, 11784.8°C day hr, 103.0°C day hr and 80999804 leangle day-1. Similar trend was observed in cv. Gurjari and cv. GNR-2. Progressive delay in sowing caused decrease PTU, HTU, PTI and EDU. Source


News Article
Site: http://phys.org/biology-news/

Cottonwood seedlings are grown at the NAU Greenhouse as part of the Southwest Experimental Garden Array. When a tree species supports more than 1,000 animals, birds, insects and microbes, the tree type can be considered too big to fail. "Cottonwoods are the General Motors of the plant world because they define a community and an ecosystem," said Tom Whitham, Regents' professor of biological sciences. Whitham's genetics-based research is designed to conserve cottonwoods in the face of climate change. In the southwestern United States, Fremont cottonwoods grow at sea level up to elevations of 6,600 feet. These are often the dominant trees of riparian habitats. Although riparian habitat makes up less than three percent of the landscape, it is a hot spot of biodiversity and supports nearly 50 percent of the birds that nest in the region. Analyzing cottonwoods has become part of the Southwest Experimental Garden Array, a project with multiple growing sites. Whitham, a SEGA principal investigator, said the project is creating a significant database with a goal of identifying genes responsible for plants' drought tolerance, productivity, disease resistance, water use efficiency and diversity. "By having these plants from sites around the state, we can identify the plants that will tolerate a three or a six degree increase in temperature," Whitham said. "This allows us a very experimental way to identify the source populations that can survive future climatic conditions." Whitham and other scientists think this conservation strategy is especially important to keep foundation species in the landscape during climate change. Gathering data on the natural genetic variations that exist in the wild can inform restoration decisions. When tasked with restoring an area, Whitham said replanting with local tree genotypes adapted for today's climate would likely not survive projected future climatic conditions in a rapidly changing environment. The big data generated by the Southwest Experimental Garden Array is shared with numerous land management agencies throughout the region where the experimental forests and gardens are planted. This sharing of information is critical and time sensitive, Whitham said. "Historically, there has been a very long lag time between basic research and implementation into management practice and we can no longer afford to do it that way," Whitham said. "With the rates of climate change, there needs to be a seamless integration between the scientific findings and land management applications." This practice has already been achieved in agriculture, where a similar approach has changed management practices with soil scientists, plant geneticists and climatologists working together to increase crop production. Whitham said it makes sense to apply similar principals to wildlands, but with different goals of maintaining healthy ecosystems and high biodiversity. Explore further: Biodiversity does not always improve resistance of forest ecosystems to drought


Nnebue C.C.,Nnamdi Azikiwe University | Ibeh C.C.,NAU | Adogu P.O.U.,NAU
Nigerian Journal of Clinical Practice | Year: 2013

Background: Disease surveillance and notification (DSN) has been shown to be weak in Nigeria, thus, its inability to promptly detect and control epidemics. Objective: To examine the completeness and timeliness of data collection and information transmission process for DSN in the Anambra state. Materials and Methods: The study was of cross-sectional design and employed the multistage sampling method to select 270 health workers who are involved in DSN in Anambra state. Data were collected by a mix method of interviewer administered questionnaire and observational checklist preceded by key informant interviews and desk review. Results: One hundred (43.9%) health workers reported regular supply of Integrated Disease Surveillance and Response (IDSR) forms, 25% and 16.2% reported it was irregular and usually out of stock, respectively. Most facilities (81.5%) returned completed forms monthly. Secondary health facilities were less likely to submit completed forms, while majority of primary health facilities submitted theirs monthly (X2 =4.42, P =0.035). With respect to correctness of records, Health Management Information System records (55.6%) were the least correct, while out-patient register (88.9%) was the most correct. Only 10.0% of health facilities submitted completed forms 5 days after completion, 88.9% of them submitted completed IDSR002 forms within 2 days of completion, while the remainder was submitted 4 days later. Conclusion: The health workers were not operating the DSN system in the State to optimal functionality. Recommendations were therefore made for the periodic training-retraining of health personnel on DSN, improved funding, provision of logistics, improved supervision, and feedback of information. Source

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