Design and Simulation of Blending Function for Landing Phase of a UAV

This paper aims to achieve the autonomous landing of unmanned air vehicle (UAV).  Itmainly deals with glide path design, flare path design, design of blending function, andinterfacing the glide and flare paths with the blending function. During transition from glideslope to flare path, a UAV will tend to the unstable region. In a manned aircraft, the pilotcontrols the unstability that occurs during the change of phase from glide slope to flare, butwhich is impossible in UAV till now. A blending function has been formulated for use in a UAVto overcome this unstability during transition. This simulation is done with the Matlab Simulinkand the results are reported

Ruthenium-Tris-Bipyridine Derivatives as a Divine Complex for Electrochemiluminescence Based Biosensor Applications

In electrochemiluminescence (ECL) studies, Tris (bipyridine)ruthenium(II) chloride (Ru(bpy)32+) and its derivatives have been used as primary luminophores since 1972. The flexible solubility in both aqueous and non-aqueous medium and the remarkable intrinsic properties like chemical, optical and desirable electrochemical behavior drives the researcher to use Ru(bpy)32+ and its derivatives as highly active ECL probes in modern analytical science. Novel surface modification of Ru(bpy)32+ based ECL platforms are highly useful in the selective and sensitive detection of biomolecules, DNA analysis, immunoassays detection, and imaging of the biologically important molecules in cells and tissue of living organisms. This chapter discusses and highlights the most significant works in Ru(bpy)32+ based ECL properties of reaction mechanisms and their applications

Visualization of Shock Wave Phenomenon around a Sharp Cone Model at Hypersonic Mach Number in a Shock Tunnel using High Speed Schlieren Facility

The flow field around a Sharp cone model configuration has been investigated by means of Schlieren facility in hypersonic shock tunnel. The time dependent evolution of flow around a cone of angle 11.38° with base radius of 150mm has been visualized for a flow Mach number M = 6.5. Experiments have been carried out with Helium as driver gas and air as test gas to visualize the hypersonic flow field. The flow establishment, steady state, and termination process of the hypersonic flow have been visualized for two different angles of attack, namely 0°&5°. Experimentally measured shock angle compares well with the theoretical and the computational study. The measured shock layer thickness compares well with the numerical simulation for both angles of attack

Background Emission of Electrogenerated Chemiluminescence during Oxidation of Tri‑<i>n</i>‑propylamine from the Dimeric ¹Δ_g State of O₂

The background electrogenerated chemiluminescence (ECL) emission observed only upon electrochemical oxidation of tri-<i>n</i>-propylamine (TPrAH) on a platinum electrode is a limiting factor in ECL analytical techniques and is poorly understood. We studied this reaction in aerated acetonitrile (MeCN) solution with TPrAH oxidized at a constant potential at the Pt surface and observed ECL spectra with an emission band at 630 nm, which is characteristic of the emission of the dimeric ¹Δ_g state of O₂. No ECL emission was observed when the same solution was deaerated. This background ECL emission is attributed to the reaction between dissolved oxygen and two different products of TPrAH oxidation: the TPrAH^• radical that reduces O₂ to the superoxide ion and the TPrAH^•+ radical cation that oxidizes this species to singlet O₂

Correlation of placental thickness with gestational age in second and third trimester using ultrasonography

Abstract Background The accuracy of currently established parameters in estimating gestational age decreases as pregnancy advances. With advancing gestational age, there is an expected linear increase in placental thickness. Placental thickness may thus be used to reliably predict gestational age, especially in later stages. Aim Our study aimed to determine the relationship between placental thickness and gestational age and routinely used fetal growth parameters in the second and third trimesters. Additionally, we aimed to see if the placental thickness was lower in small for gestational fetuses. Methods This study was performed at a tertiary care center and was a prospective observational study. We recruited consecutive 200 pregnant women fulfilling inclusion and exclusion criteria. Using routine antenatal ultrasonography, we obtained several measurements of placental thickness, BPD, HC, FL, and AC. The placental thickness was measured at the level of umbilical cord insertion. The gestational age was calculated using last menstrual period. Results There was a strong correlation between placental thickness and gestational age (p < 0.001), BPD (p < 0. 001), HC (p < 0. 001), FL (p < 0. 001), and AC (p < 0.001) in both trimesters combined. In the second trimester, there was a strong correlation between placental thickness and gestational age (p < 0.001), BPD (p < 0.01), HC (p < 0.001), and AC (p < 0.001). In the third trimester, there was a strong correlation between placental thickness and gestational age (p < 0.001), BPD (p < 0.001), HC (p < 0.001), FL (p < 0.001) and AC (p < 0. 001). Patients delivering Small for gestational age (SGA) babies had significantly thinner placentas as compared to those with normal-weight babies (p < 0.001). Conclusions Placental thickness has a strong correlation with gestation age as well as BPD, HC, and AC in the second and third trimesters. Placental thickness is significantly lower in small for gestational age babies. Routine measurement of antenatal placental thickness using ultrasound can help predict gestational age and detect small for gestational age babies

Correlation between the structural, electrical and electrochemical performance of layered Li(Ni0.33Co0.33Mn0.33)O-2 for lithium ion battery

The Li(Ni0.33Co0.33Mn0.33)O2 (LNCMO) cathode material is prepared by poly(vinyl pyrrolidone) (PVP)-assisted sol-gel/hydrothermal and poly(ethylene glycol)-block-poly(propylene glycol)-block-poly (ethylene glycol) (Pluronic-P123)-assisted hydrothermal methods. The compound prepared by PVP-assisted hydrothermal method shows a comparatively higher electrical conductivity of ~2 × 10−5 S cm−1 and exhibits a discharge capacity of 152 mAh g−1 in the voltage range of 2.5 to 4.4 V, for a C-rate of 0.2 C, whereas the compounds prepared by P123-assisted hydrothermal method and PVP-assisted sol-gel method show a total electrical conductivity in the order of 10−6 S cm−1 and result in poor electrochemical performance. The structural and electrical properties of LNCMO (active material) and its electrochemical performance are correlated. The difference in percentage of ionic and electronic conductivity contribution to the total electrical conductivity is compared by transference number studies. The cation disorder is found to be the limiting factor for the lithium ion diffusion as determined from ionic conductivity values. © 2015, Springer-Verlag Berlin Heidelberg.1

Characterization and abiotic stress-responsive expression analysis of SGT1 genes in Brassica oleracea

SGT1 genes are involved in enhancing plant responses to various biotic and abiotic stresses. Brassica oleracea is known to contain two types of SGT1 genes, namely Suppressor of G2 allele of SKP1 and Suppressor of GCR2. In this study, through systematic analysis, four putative SGT1 genes were identified and characterized in B. oleracea. In phylogenetic analysis, the genes were formed BolSGT1a, BolSGT1b (both Suppressor of G2 allele of SKP1 types) and BolSGT1 (Suppressor of GCR2) groups. Functional domain analysis and organ-specific expression patterns suggested possible roles for BolSGT1 genes during stress conditions. BolSGT1 genes showed significant changes in expression in response to heat, cold, drought, salt, or ABA treatment. Interaction network analysis supported the expression analysis, and showed that the BolSGT1a and BolSGT1b genes are strongly associated with co-regulators during stress conditions. However, the BolSGT1 gene not showed any strong association. Hence, BolSGT1 might be a stress resistance-related gene that functions without a co-regulator. Our results show that BolSGT1 genes are potential target genes to improve B. oleracea resistance to abiotic stresses such as heat, cold, and salt.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author