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Search Results: 1 - 10 of 198062 matches for " N. Kiranmayee "
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A Distributed Control System for Spatial Hyper Redundant Robot using CAN
N. Kiranmayee,R. Seethalakshmi,Jobby C. Johnson,Joel Jose
Journal of Artificial Intelligence , 2012,
Abstract: Spatial Hyper Redundant (SHR) robot has more controllable DOF than actual DOF due to hyper redundancy. The robot has increased dexterity and is well known for its use in unstructured environments. Due to higher controllable DOF, control system becomes extremely complex to implement. Hence, to develop the same, Controller Area Network (CAN) protocol which enables lesser number of bus signals and quite suitable in an environment where large number of microprocessor based systems are employed is used. In this case, stepper motors are used to actuate the links. This research involves in design of control system for an 8 link snake like robot using CAN protocol. A node consists of a microcontroller, CAN controller, CAN transceiver and a physical medium for transmission. A PIC 18F458 is chosen as the microcontroller which has inbuilt CAN module and it is programmed using CCS compiler for the application. The CAN communication was established by sending data from one node to other for physically actuating motions of links at its initial phase and then it was extended for multiple nodes with one node as master interfaced to GUI using RS232 on one side and to other nodes through CAN. Implementation of message filtering was done for each node. Performance of the system was also studied for multiple nodes of the system.
HPLC Polyphenolics Profile and H2O2 Induced Cytoprotective Effect of Salacia oblonga Extracts on Human Lymphocytes  [PDF]
Anjaneyulu Musini, Suryakala Gandi, Kiranmayee Rao, Archana Giri
Advances in Biological Chemistry (ABC) , 2016, DOI: 10.4236/abc.2016.61003
Abstract: Salacia oblonga (Wall.) belonging to the family Celastraceae is an important medicinal plant available in India and Sri Lanka. It possesses an array of pharmacological and therapeutic properties. In the present study phenolic compounds of S. oblonga methanolic extracts were estimated by high performance liquid chromatography (HPLC) indicating the presence of catechin, quercetin, synapic acid and syringic acid. The study involved evaluation of S. oblonga extracts for cytotoxic and cytoprotective effects on human lymphocytes. Aerial extracts have significant protective activity against hydrogen peroxide (H2O2) induced cytotoxic activity in comparison to the root extracts. The results relate the cytoprotective effect of S. oblonga due to the presence of poly phenols and other phytochemicals, as they have significant ability to remove free radicals or reactive species and might induce the expression of antioxidant enzymes inside the cells.
Determination of surface tension, optical rotativity and refractive index of polymer polyvinyl alcohol PVA, in various solvents at different concentrations
Sarojini Panda,Gouranga Chandra Mohanty,Gourisankar Roy,Kiranmayee Sahoo
Latin-American Journal of Physics Education , 2011,
Abstract: Surface tension, Optical Rotativity and Refractive Index of Polymer PVA ( w=1,25,000) in various solvents like distilled water, NaOH, KOH and Urea at different concentrations are measured, which enable us to know the interaction of the polymer molecules in these solvents.
Phylogenetic analysis of cubilin (CUBN) gene
Abjal Pasha Shaik,Abbas H Alsaeed,S Kiranmayee,VK Bammidi
Bioinformation , 2013,
Abstract: Cubilin, (CUBN; also known as intrinsic factor-cobalamin receptor [Homo sapiens Entrez Pubmed ref NM_001081.3; NG_008967.1; GI: 119606627]), located in the epithelium of intestine and kidney acts as a receptor for intrinsic factor – vitamin B12 complexes. Mutations in CUBN may play a role in autosomal recessive megaloblastic anemia. The current study investigated the possible role of CUBN in evolution using phylogenetic testing. A total of 588 BLAST hits were found for the cubilin query sequence and these hits showed putative conserved domain, CUB superfamily (as on 27th Nov 2012). A first-pass phylogenetic tree was constructed to identify the taxa which most often contained the CUBN sequences. Following this, we narrowed down the search by manually deleting sequences which were not CUBN. A repeat phylogenetic analysis of 25 taxa was performed using PhyML, RAxML and TreeDyn softwares to confirm that CUBN is a conserved protein emphasizing its importance as an extracellular domain and being present in proteins mostly known to be involved in development in many chordate taxa but not found in prokaryotes, plants and yeast.. No horizontal gene transfers have been found between different taxa.
Fluctuation of Spuriously Elevated Troponin I: A Case Report
Sam Ghali,Keith Lewis,Viviane Kazan,Neezam Altorok,Jamil Taji,Mohammad Taleb,Kiranmayee Lanka,Ragheb Assaly
Case Reports in Critical Care , 2012, DOI: 10.1155/2012/585879
Abstract: Serum troponin is a useful laboratory study for the diagnosis of acute myocardial infarction. However, elevations can also be seen in a variety of other diseases processes. Falsely positive troponin values caused by interference with current troponin assays have been reported. We report a unique case that demonstrates the fluctuation of falsely elevated troponin correlating with hemoglobin, serving as a marker of heterophile antibody levels. A 74-year-old gentleman presented to our Emergency Department with a several-day history of increasing shortness of breath associated with a new-onset chest pain and a troponin I level of 77.28 ng/mL. Throughout his stay, fluctuations in measured troponin levels correlated strongly with fluctuations in hemoglobin levels. Several investigations confirmed false elevated troponin levels secondary to heterophile antibody interference. We conclude that hemoglobin trending in our patient represented a surrogate measure of his heterophile antibody titers with time and that fluctuations in these levels correlated with respective fluctuations in the falsely elevated troponin levels.
Fluctuation of Spuriously Elevated Troponin I: A Case Report
Sam Ghali,Keith Lewis,Viviane Kazan,Neezam Altorok,Jamil Taji,Mohammad Taleb,Kiranmayee Lanka,Ragheb Assaly
Case Reports in Critical Care , 2012, DOI: 10.1155/2012/585879
Abstract: Serum troponin is a useful laboratory study for the diagnosis of acute myocardial infarction. However, elevations can also be seen in a variety of other diseases processes. Falsely positive troponin values caused by interference with current troponin assays have been reported. We report a unique case that demonstrates the fluctuation of falsely elevated troponin correlating with hemoglobin, serving as a marker of heterophile antibody levels. A 74-year-old gentleman presented to our Emergency Department with a several-day history of increasing shortness of breath associated with a new-onset chest pain and a troponin I level of 77.28?ng/mL. Throughout his stay, fluctuations in measured troponin levels correlated strongly with fluctuations in hemoglobin levels. Several investigations confirmed false elevated troponin levels secondary to heterophile antibody interference. We conclude that hemoglobin trending in our patient represented a surrogate measure of his heterophile antibody titers with time and that fluctuations in these levels correlated with respective fluctuations in the falsely elevated troponin levels. 1. Introduction Cardiac troponins T (cTnT) and I (cTnI) are regulatory proteins that control the calcium-mediated interaction between actin and myosin [1]. The skeletal and cardiac isoforms of cTnT and cTnI are distinct, and skeletal isoforms are not detected by the monoclonal antibody-based assays currently in use [2]. This specificity for cardiac isoforms is the basis for the clinical utility of cTnT and cTnI assays. Relying on history, physical examination, and ECG abnormalities to diagnose acute myocardial infarction may often lead the clinician astray. Thus, the diagnosis of an acute myocardial infarction has become increasingly dependent upon the evaluation of cardiac enzymes, particularly cardiac troponins [2, 3]. In addition to acute myocardial infarction, elevated serum troponins can also be seen in a variety of other diseases including sepsis or critical illness, tachycardia, LVH, heart failure, pulmonary embolism, myocarditis, myocardial trauma, and renal failure [4, 5]. Although irreversible myocyte damage is the usual presumed mechanism responsible for troponin elevation, several additional mechanisms are believed to be responsible for elevated serum troponins in the aforementioned pathological states, including endothelial dysfunction, loss of membrane integrity with leakage of the free cytosolic troponin pool, stretch-mediated troponin release, and impaired renal excretion [6]. Falsely elevated troponin values caused by
Implementation of a Higher Quality dc Power Converter  [PDF]
N. N. Barsoum
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.22012
Abstract: Many single and three-phase converters are well developed, and covered up in most of electric markets. It is used in many applications in power systems and machine drives. However, an exact definite output signal from the dc side still not recognized. The waveforms of output voltage and current demonstrate an imperfect dc signal and constitute losses, harmonic distortion, low power factor, and observed some ripples. An approximately perfect rectifier bridge is the aim of this research. Perhaps it gives the ability to identify the parameters of the converter to obtain, as much as possible, a perfect dc signal with less ripple, high power factor and high efficiency. Design is implemented by simulation on Power Simulator PSIM, and practically, a series regulator LM723 is applied to provide regulating output voltage. Comparisons of both simulation and hardware results are made to observe differences and similarities.
Estimation of Sensitivity of the DS/AHP Method While Solving Foresight Problems with Incomplete Data  [PDF]
N. Pankratova, N. Nedashkovskaya
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.41011
Abstract:

The paper provides mathematical analysis of sensitivity of different combination rules in the DS/AHP method when an alternative is added to the set of decision alternatives while solving foresight problems. Different cases of rank reversals are defined and two sets of conditions for these cases using the method DS/AHP are considered. Rank reversals are illustrated when the DS/AHP method is used to solve practical problem of critical technologies of energy conservation and power efficiency evaluation in Ukraine. It is shown that the DS/AHP method is not sensitive to exclusion (or addition) of an irrelevant decision alternative from (or to) the set of decision alternatives.

Computation of the Genetic Code: Full Version  [PDF]
N. N. Kozlov
Journal of Computer and Communications (JCC) , 2017, DOI: 10.4236/jcc.2017.510008
Abstract: One of the problems in the development of mathematical theory of the genetic code (summary is presented in [1], the detailed—to [2]) is the problem of the calculation of the genetic code. Similar problem in the world is unknown and could be delivered only in the 21st century. One approach to solving this problem is devoted to this work. For the first time a detailed description of the method of calculation of the genetic code was provided, the idea of which was first published earlier [3]), and the choice of one of the most important sets for the calculation was based on an article [4]. Such a set of amino acid corresponds to a complete set of representation of the plurality of overlapping triple gene belonging to the same DNA strand. A separate issue was the initial point, triggering an iterative search process all codes submitted by the initial data. Mathematical analysis has shown that the said set contains some ambiguities, which have been founded because of our proposed compressed representation of the set. As a result, the developed method of calculation was reduced to two main stages of research, where at the first stage only single-valued domains were used in the calculations. The proposed approach made it possible to significantly reduce the amount of computation at each step in this complex discrete structure.
The Study of the Secrets of the Genetic Code  [PDF]
N. N Kozlov
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.67007
Abstract: The disclosure of many secrets of the genetic code was facilitated by the fact that it was carried out on the basis of mathematical analysis of experimental data: the diversity of genes, their structures and genetic codes. New properties of the genetic code are presented and its most important integral characteristics are established. Two groups of such characteristics were distinguished. The first group refers to the integral characteristics for the areas of DNA, where genes are broken down in pairs and all 5 cases of overlap, allowed by the structure of DNA, were investigated. The second group of characteristics refers to the most extended areas of DNA in which there is no genetic overlap. The interrelation of the established integral characteristics in these groups is shown. As a result, a number of previously unknown effects were discovered. It was possible to establish two functions in which all the over-understood codons in mitochondrial genetic codes (human and other organizations) participate, as well as a significant difference in the integral characteristics of such codes compared to the standard code. Other properties of the structure of the genetic code following from the obtained results are also established. The obtained results allowed us to set and solve one of the new breakthrough problems—the calculation of the genetic code. The full version of the solution to this problem was published in this journal in August 2017.
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