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Search Results: 1 - 10 of 304005 matches for " Trutnev N. V. "
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DETERMINATION OF SPECIFIC POWER BALANCE OF TECHNOLOGICAL CYCLE OF ROUND TIMBER POWER-DRIVEN HARVESTING Определение удельного энергобаланса технологического цикла механизированной заготовки круглого лесоматериала
Gryazin V. A.,Gorbunov R. M.,Khandrikov V. A.,Trutnev N. V.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2013,
Abstract: This article presents the original data for study designed to determine the effect of individual parameters of machines and technological process of round timber harvesting on the energy consumption data. These data allow us to determine the frontier efficiency of individual processing steps as well as of timber harvesting generally
The Conservation of Energy Space-Time Metric for Space Outside Matter  [PDF]
V. N. E. Robinson
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.48149

By using experimentally determined measurements of potential energy together with the principle of conservation of energy and solving directly, the space-time geometry equation for space outside matter is obtained. That equation fits all the experimental observations that support the accepted Schwarzschild metric, yet predicts there isn’t a singularity at the Schwarzschild radius. The accepted Schwarzschild metric is the first approximation of the conservation of energy space-time metric. No observation yet made can distinguish between the predictions of the two metrics.

Connecting Productivity with Social Capital via Daily Mobile Phone Logs  [PDF]
B. Padmaja, V. V. Rama Prasad, K. V. N. Sunitha
Social Networking (SN) , 2016, DOI: 10.4236/sn.2016.52007
Abstract: Human behavior and their social interactions can be quantified and modeled with the use of smart phones and any wearable badges which senses and captures real-life interactions. In traditional social sciences, such information was gathered by conducting surveys. However in digital era, smart phones are regarded as a popular tool which automatically senses much human information to quantify our lives. Reality mining gives a clear picture of a human being and its social relations. Social Network Analysis (SNA) is a powerful research tool which provides a comprehensive analysis on ego-alters communications with their individual productivity within a community. In this paper, various popular measures of social network analysis have used to study a closed community through their mobile call logs for a period of time. We experimented various social network measures both on daily basis and also over a period of time. The pattern shows that the relationships and interaction between ego-alter ties have more productive benefits. Using Pearsoncorrelation analysis, we observed that significant (positive) correlation exists between various network properties and their productivity. Results showed that degree (size) has the strongest positive correlation with average productivity, followed by effective size, efficiency, constraint, hierarchy, and k-core of an individual. Density and betweenness centrality have a weak, negative correlation with productivity. Hence social capital has a significant influence on human productivity.
Qualitative analysis of re mineralized carious lesions subjected to fluoride supplement through confocal laser scanning microscope  [PDF]
K. Shashikala, N. V. Sheela
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.13010
Abstract: Aim: 1] Comparative evaluation of the linear depth of induced remineralized lesions after subjecting to fluoride supplements and 2] To assess the average fluorescence at both the demineralized and the remi-neralized zones in all the three study groups under confocal laser scanning microscope. Method: Forty five sound human premolars extracted for orthodon-tic reasons were decoronated 1 mm below the ce-mento-enamel junction and coated with nail varnish except for a 3 × 3 mm window on the buccal surface. The samples were placed in 50 ml of de mineralizing solution at pH 4.6 for 96 hours. Following deminera-lization, the lower half of the 3 × 3 mm window in all the samples were covered with nail varnish to serve as control. The samples were randomly divided into three groups of fifteen teeth each (n = 15) and speci-mens in group A[Nfd] were remineralized using non-fluoridated dentifrice [control], those in groups B [Fd5] and group C [Fd10] using 500 ppm and 1000 ppm of fluoride containing dentifrice, respectively. The specimens were subjected to a 20 day reminera-lization treatment regimen and were sectioned into 100 µm thick sections and two images were captured on the buccal surface from either side of the midpoint of occluso-cervical length using confocal laser scan-ning microscope [CLSM]. Results: were tabulated and statistically analyzed by Anova. Study concluded that 1000 ppm fluoridated dentifrice showed a greater degree of remineralization than other groups and confocal laser scanning microscopes gives promising results in the diagnosis of early enamel lesions over the conventional methods.
Critical Parameters and Magnetocaloric Effect of the La5/8Ca3/8Mn0.9750Pd0.025O3 Compound  [PDF]
L. V. Bau, N. M. An
Materials Sciences and Applications (MSA) , 2014, DOI: 10.4236/msa.2014.512086
Abstract: The La5/8Ca3/8Mn0.9750Pd0.025O3 compound was studied using DC magnetization measurements. The data were analyzed in the paramagnetic-ferromagnetic phase transition region by the Arrott plot method. The results show the Curie temperature TC ~ 247.8 K and the critical exponents of b = 0.48633, g = 1.18623 and d = 3.431682. The values of the critical exponents are between the mean- field theory and 3D Ising model. The magnetocaloric value is ~5 J/kgK, extracted from the M(H) curves.
Effect of FCAW Process Parameters on Weld Bead Geometry in Stainless Steel Cladding  [PDF]
V. Vasantha Kumar, N. Murugan
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.109064
Abstract: Recently automated and / or robotic welding systems have received a great deal of attention because they are highly suitable not only to enhance production rate and quality, but also to decrease cost and time to manufacture for a given product. To get the desired quality welds it is essential to have complete control over the relevant process parameters in order to obtain the required bead geometry. Mathematical models need to be developed to have such control and to make effective use of automated and / or robotic arc welding process.
Optimization of Friction and Wear Behaviour in Hybrid Metal Matrix Composites Using Taguchi Technique  [PDF]
V. C. Uvaraja, N. Natarajan
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2012, DOI: 10.4236/jmmce.2012.118063
Abstract: Al-7075 alloy-base matrix, reinforced with mixtures of silicon carbide (SiC) and boron carbide (B4C) particles, know as hybrid composites have been fabricated by stir casting technique (liquid metallurgy route) and optimized at different parameters like sliding speed, applied load, sliding time, and percentage of reinforcement by Taguchi method. The specimens were examined by Rockwell hardness test machine, Pin on Disc, Scanning Electron Microscope (SEM) and Optical Microscope. A plan of experiment generated through Taguchi’s technique is used to conduct experiments based on L27 orthogonal array. The developed ANOVA and the regression equations were used to find the optimum wear as well as co-efficient of friction under the influence of sliding speed, applied load, sliding time and percentage of reinforcement. The dry sliding wear resistance was analyzed on the basis of “smaller the best”. Finally, confirmation tests were carried out to verify the experimental results.
Void Aware Position Based Opportunistic Routing for QoS in Mobile Ad Hoc Networks  [PDF]
V. Raji, N. Mohan Kumar
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78132
Abstract: The unique anywhere, anytime wireless communication support offers, tremendous potential for the next generation of applications in a Mobile Ad-hoc Network (MANET). The Quality of Service (QoS) has been the ever demanding task of wireless communication to satisfy the application requirements. Geographical routing employs a greedy forwarding technique to deliver the packets to the destination and to owe the communication void, it fails to render the expected level of QoS. Opportunistic routing technique effectively utilizes the advantages of broadcasting nature of thewireless medium and selects a set of forwarding candidates instead of relying on a greedy node.To improve the efficiency of QoS routing in sparse and highly dynamic network topology, this paper proposes the Void-Aware Position based Opportunistic Routing (VAPOR). The VAPOR maintains 2-hop neighbor information to take a routing decision, but it is limited to 1-hop informationwhen the node density is high. It efficiently balances the storage overhead and communicationdelay due to void and it increases the network throughput even under a sparse network. To provide a certain assurance level for packet reachability, VAPOR decides the potential forwardersbased on the forwarding probability that measures link stability, capacity, and connectivity factor. It adaptively favors a path that avoids frequent link failure and unreliable link usage. By limitingthe propagation area of duplicate packets, VAPOR reduces wastage of network resources, and ittakes the advantage of concurrent batch forwarding to avoid further duplication and unnecessary delay.
Minimum Diameter Spanning Tree  [PDF]
V. T. Chandrasekaran, N. Rajasri
American Journal of Computational Mathematics (AJCM) , 2018, DOI: 10.4236/ajcm.2018.83016
Abstract: In this paper, we discuss the simple connected graphs which have a minimum diameter spanning tree such that both have same domination number.
Thermoelectrical Investigation of Rare Earth Sulfide Materials  [PDF]
V.V. Sokolov, V.V. Bakovetz, S.M. Luguev, N.V. Lugueva
Advances in Materials Physics and Chemistry (AMPC) , 2012, DOI: 10.4236/ampc.2012.24B007
Abstract: Results  are presented on synthesis   and crystal growth of  Gd2S3-Dy2S3 solid solution sulfides and study of their thermoelectric properties in the range of temperatures 80-400 K. Gd0.2Dy0.8S1.48 composition has the best values of thermoelectric efficiency 0.39 x 10-3/K at 400 K.
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