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105 results for “Hole”
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Research ArticleOpen accessIn the abstractEr: YAG Laser Device for Taking Blood SamplesJosé L. Cabrera, Luis Ponce, Miguel Arronte et al.Problem statement: Secure methods for blood sampling which is performed at present by metallic lancets, has been a concern in the modern medicine in order to diminish the risk of contamination. A novel solution has appeared recently and consists in the use of laser pulses which ablates a tiny hole in skin. Approach: A laser device with Er: YAG active … …OnLine Journal of Biological Sciences, Vol. 8, Issue 1 · 31 Mar 2008 · 7,183 accessesView PDFCite
Review ArticleOpen accessIn the abstractRecent Advances in Fabrication Techniques of Perovskite Solar Cells: A ReviewAlborz Ehtesham, WeiWen Wong, H.Y. Wong, Mukter ZamanIn this study, thorough review is performed on various reported fabrication techniques of the Perovskite Solar Cell (PSC) and the Hole Transport Materials (HTM) layer, in order to provide a critical insight on the direction for further advancement in related fields as well as a better understanding on the device physics. So far, the best short-circuit current density of 22.9 … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 26 Nov 2016 · 9,636 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatistical Analysis of Geothermal Data of an Oil Field, in Parts of Niger Delta, NigeriaEmujakporue Godwin Omokenu, Leonard I. NwosuGeothermal gradient and heat flow were computed from bottom hole temperatures in an oil field in Niger Delta, Nigeria. The statistical analysis of computed geothermal data was carried out. The computed geothermal gradient vary from 17.3±0.14 to 24.33±0.70°C/Km with an average of 22.24±0.57°C/km. The heat flow ranges from 38.06±0.31 to 56.39±2.41 mWm-2 with an average of 50.15±1.25 mWm-2. The computed … …Current Research in Geoscience, Vol. 6, Issue 2 · 26 Sep 2016 · 7,969 accessesView PDFCite
Research ArticleOpen accessIn the abstractReconstruction of the Depositional Setting of Tortonian Sediments in the Yowi Field, Shallow Offshore Niger Delta, Using Wireline LogsPrince Suka Momta, Minapuye Isaac OdigiWell logs and ditch-cuttings information was used to study the subsurface of the Yowi oilfields, shallow offshore, in the eastern Niger Delta sedimentary basin. The essence of the study was to determine the gross depositional environments of selected and-bodies. Electrofacies trends from gamma ray log and mineral composition of ditch-cutting samples were used to reconstruct the depositional environments in the … …Current Research in Geoscience, Vol. 6, Issue 1 · 8 Feb 2016 · 7,928 accessesView PDFCite
Research ArticleOpen accessIn the abstractDEEP TRAPS SPECTRA IN UNDOPED GAN FILMS GROWN BY HYDRIDE VAPOR PHASE EPITAXY UNDER VARIOUS CONDITIONSA. Y. Polyakov, N. B. Smirnov, A. V. Govorkov et al.Decreasing the residual donors density and deep traps spectra densities in undoped GaN films grown by Hydride Vapor Phase Epitaxy (HVPE) is very important for promoting the use of such material in high-voltage/high-power rectifiers, radiation detectors. In this study we studied the effects of changing the growth temperature of undoped HVPE GaN films on these properties. The two groups of … …American Journal of Applied Sciences, Vol. 11, Issue 9 · 30 Sep 2014 · 6,906 accessesView PDFCite
Research ArticleOpen accessIn the abstractNUCLEAR DETONATION AROUND COMPACT OBJECTSC. Sivaram, Kenath Arun, O.V. KirenIn this study we explore the various aspects involved in nuclear detonations occurring around compact objects and the energetics involved. We discuss the possibility of sub-Chandrasekhar white dwarfs detonating due to the buildup of a layer of hydrogen on the CO white dwarf by accreting from a companion star to explain observed deviations such as subluminous type Ia. We also … …Physics International, Vol. 5, Issue 1 · 24 Mar 2014 · 8,229 accessesView PDFCite
Research ArticleOpen accessIn the abstractPERFORMANCE ANALYSIS OF ADHOC ON DEMAND DISTANCE VECTOR PROTOCOL WITH BLACKHOLE ATTACK IN WSNMuhammad Ibrahim Channa, Kamalrulnizam Abu Bakar, Adnan AhmedThe security is major challenging issue in wireless sensor network applications because they are operated in public and unrestrained areas which also makes difficult to protect against tampering or captured by an adversary force that can launch insider attacks to make a node compromised. One type of such attack is black hole attack. Existing AODV routing protocol does not have … …Journal of Computer Science, Vol. 10, Issue 8 · 26 Feb 2014 · 7,593 accessesView PDFCite
Research ArticleOpen accessIn the abstractUltra Low Power Single Edge Triggered Delay Flip Flop Based Shift Registers Using 10-Nanometer Carbon Nano Tube Field Effect TransistorRavi Thiyagarajan, Kannan VeerappanCarbon Nano Tube Field Effect Transistor is currently considered as promising successor of Metal Oxide Semiconductor Field Effect Transistor. The scaling down of the Metal Oxide Semiconductor device faced serious limits like short channel effect, tunnelling through gate oxide layer, associated leakage currents and power dissipation when its dimension shrink down to 22 nanometer range. Further scaling of Metal Oxide … …American Journal of Applied Sciences, Vol. 10, Issue 12 · 14 Oct 2013 · 6,756 accessesView PDFCite
Research ArticleOpen accessIn the abstractA LEADER BASED MONITORING APPROACH FOR SINKHOLE ATTACK IN WIRELESS SENSOR NETWORKD. Udaya Suriya Rajkumar, Rajamani VayanaperumalSecurity is one of an important factor to be considered seriously in wireless sensor networks. In WSN, in many ways intrusion may occur, in the past decades there is no perfect IDS, without any wasting of resources like time, energy, cost and number of physical items. The main objective is to ensure the security and improve the quality of network … …Journal of Computer Science, Vol. 9, Issue 9 · 6 Aug 2013 · 6,917 accessesView PDFCite
Research ArticleOpen accessIn the abstractParticle Swarm Optimization-Based Routing Protocol for Clustered Heterogeneous Sensor Networks with Mobile SinkR. Sudarmani, K.R. Shankar KumarIn Wireless Sensor Networks (WSN) sensor nodes with sensing, computing and communication infrastructure are randomly deployed and organized as clusters. Most of the existing sensor networks focus on homogeneous in which the cluster heads are changed periodically. To improve the lifetime of energy constraint battery powered WSN and to avoid energy sink-hole problem; Clustered Heterogeneous Sensor Networks (HSN) are analyzed … …American Journal of Applied Sciences, Vol. 10, Issue 3 · 18 Mar 2013 · 6,845 accessesView PDFCite