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https://www.readbyqxmd.com/read/28092595/command-filter-based-adaptive-neural-tracking-controller-design-for-uncertain-switched-nonlinear-output-constrained-systems
#1
Ben Niu, Yanjun Liu, Guangdeng Zong, Zhaoyu Han, Jun Fu
In this paper, a new adaptive approximation-based tracking controller design approach is developed for a class of uncertain nonlinear switched lower-triangular systems with an output constraint using neural networks (NNs). By introducing a novel barrier Lyapunov function (BLF), the constrained switched system is first transformed into a new system without any constraint, which means the control objectives of the both systems are equivalent. Then command filter technique is applied to solve the so-called "explosion of complexity" problem in traditional backstepping procedure, and radial basis function NNs are directly employed to model the unknown nonlinear functions...
January 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28091947/characteristics-of-the-energetic-micro-initiator-through-integrating-al-ni-nano-multilayers-with-cu-film-bridge
#2
Yuxin Zhang, Hongchuan Jiang, Xiaohui Zhao, Yichao Yan, Wanli Zhang, Yanrong Li
An energetic micro-initiator through integrating Al/Ni nano-multilayers with Cu film bridge was investigated in this study. The Cu film bridge was initially fabricated with wet etching, and Al/Ni nano-multilayers were alternately deposited on the surface of Cu film bridge by magnetron sputtering. The periodic layer structure of Al/Ni nano-multilayers was verified by scanning electron microscopy. The exothermic reaction in Al/Ni nano-multilayers can be initiated with onset reaction temperature as low as 503 K, and the total reaction heat is about 774...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28091889/theoretical-insights-into-the-effects-of-molar-ratios-on-stabilities-mechanical-properties-and-detonation-performance-of-cl-20-hmx-cocrystal-explosives-by-molecular-dynamics-simulation
#3
Gui-Yun Hang, Wen-Li Yu, Tao Wang, Jin-Tao Wang, Zhen Li
To research and estimate the effects of molar ratios on structures, stabilities, mechanical properties, and detonation properties of CL-20/HMX cocrystal explosive, the CL-20/HMX cocrystal explosive models with different molar ratios were established in Materials Studio (MS). The crystal parameters, structures, stabilities, mechanical properties, and some detonation parameters of different cocrystal explosives were obtained and compared. The molecular dynamics (MD) simulation results illustrate that the molar ratios of CL-20/HMX have a direct influence on the comprehensive performance of cocrystal explosive...
January 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28091542/on-line-ammonia-sensor-and-invisible-security-ink-by-fluorescent-zwitterionic-spirocyclic-meisenheimer-complex
#4
Tanmay Das, Apurba Pramanik, Debasish Haldar
Ammonia is not only a highly important gas for civilization but also contribute significantly for climate change and human health hazard. Highly sensitive ammonia sensor has been developed from a fluorescent zwitterionic spirocyclic Meisenheimer complex. Moreover, formation of this Meisenheimer complex can also be utilized for selective as well as naked eye instant detection of nitro aromatic explosive picric acid. The presence of a quaternary nitrogen atom directly attached to the spiro carbon is the unique feature of this Meisenheimer complex...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089793/eggshell-palaeogenomics-palaeognath-evolutionary-history-revealed-through-ancient-nuclear-and-mitochondrial-dna-from-madagascan-elephant-bird-aepyornis-sp-eggshell
#5
Alicia Grealy, Matthew Phillips, Gifford Miller, M Thomas P Gilbert, Jean-Marie Rouillard, David Lambert, Michael Bunce, James Haile
Palaeognaths, the sister group of all other living birds (neognaths), were once considered to be vicariant relics from the breakup of the Gondwanan supercontinent. However, recent molecular studies instead argue for dispersal of volant ancestors across marine barriers. Resolving this debate hinges upon accurately reconstructing their evolutionary relationships and dating their divergences, which often relies on phylogenetic information from extinct relatives and nuclear genomes. Mitogenomes from the extinct elephant birds of Madagascar have helped inform the palaeognath phylogeny; however, nuclear information has remained unavailable...
January 9, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28089222/-etiology-and-prognosis-of-the-eye-traumas-by-war-weapons-in-the-senegalese-army
#6
S M Seck, M Diakhaté, M N Ndiaye Sow, M Dieng, G Agboton, N N Guèye
INTRODUCTION: The aim of this work is to identify the main weapons causing eye injuries during the campaigns of the Senegalese army in the south of the country, as well as the prognosis of these traumas. PATIENTS AND METHODS: This study is retrospective and concerns soldiers wounded by the weapons of war during the exercise of their mission within the Senegalese armed forces of 1991 in 2005. They are mainly soldiers affected in the south of the country during a war, clashes with the rebels or in Guinea-Bissau during operation Gabou in 1998...
January 11, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28088854/conjugated-covalent-organic-frameworks-via-michael-addition%C3%A2-elimination
#7
Malakalapalli Rajeswara Rao, Yuan Fang, Steven De Feyter, Dmitrii F Perepichka
Dynamic covalent chemistry enables self-assembly of reactive building blocks into structurally complex yet robust materials, such as Covalent Organic Frameworks (COFs). However, the synthetic toolbox used to prepare such materials, and thus the spectrum of attainable properties, is very limited. For π-conjugated COFs, the Schiff base condensation of aldehydes and amines is the only general dynamic reaction, but the resulting imine-linked COFs display only a moderate electron delocalization and are susceptible to hydrolysis, particularly in acidic conditions...
January 14, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28088847/vapor-and-gas-bubble-growth-dynamics-around-laser-irradiated-water-immersed-plasmonic-nanoparticles
#8
Yuliang Wang, Mikhail E Zaytsev, Hai Le The, Jan Cornelis Titus Eijkel, Harold J W Zandvliet, Xuehua Zhang, Detlef Lohse
Microbubbles produced by exposing water-immersed metallic nanoparticles to resonant light play an important role in novel and efficient plasmonic-enhanced processes for catalytic conversion, solar energy harvesting, biomedical imaging technique or cancer therapy. How do these bubbles form and what is their gas composition? In this article, the growth dynamics of nucleating bubbles around laser irradiated water-immersed Au plasmonic nanoparticles are studied to determine the exact origin of the occurrence and growth of these bubbles...
January 16, 2017: ACS Nano
https://www.readbyqxmd.com/read/28088746/development-of-a-screening-questionnaire-for-dsm-5-intermittent-explosive-disorder-ied-sq
#9
Emil F Coccaro, Mitchell E Berman, Michael S McCloskey
OBJECTIVE: This study was designed to develop and test a screening approach to identify individuals with DSM-5 Intermittent Explosive Disorder (IED), a disorder of recurrent, problematic, impulsive aggression. METHODS: A screening approach to diagnose DSM-5 IED (IED-SQ) was developed by combining items related to life history of aggression and items related to the DSM-5 diagnostic criteria for IED. In study 1, the IED-SQ was studied in 72 adult participants; 33 that met DSM-5 criteria for lifetime IED and 39 that did not...
December 22, 2016: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28078315/degenerative-ataxias-challenges-in-clinical-research
#10
REVIEW
Sub H Subramony
The degenerative ataxias are a very heterogeneous group of disorders that include numerous genetic diseases as well as apparently "sporadic" entities. There has been an explosion of discoveries related to genetic defects and related pathomechanisms that has brought us to the threshold of meaningful therapies in some but not all of these diseases. There also continues to be lack of knowledge of the causation of disease in a sizeable proportion of these patients. The overall rarity of ataxias as a whole and certainly of the individual genetic entities together with slow and variable progression and variable prognosis in juxtaposition with a rapid development of possible therapies in the horizon such as gene replacement and gene knock-down strategies places the ataxias in a unique position distinct from other similar neurodegenerative diseases...
January 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28076869/computational-prediction-of-the-global-functional-genomic-landscape-applications-methods-and-challenges
#11
Weiqiang Zhou, Ben Sherwood, Hongkai Ji
Technological advances have led to an explosive growth of high-throughput functional genomic data. Exploiting the correlation among different data types, it is possible to predict one functional genomic data type from other data types. Prediction tools are valuable in understanding the relationship among different functional genomic signals. They also provide a cost-efficient solution to inferring the unknown functional genomic profiles when experimental data are unavailable due to resource or technological constraints...
2016: Human Heredity
https://www.readbyqxmd.com/read/28073264/metal-organic-polyhedra-coated-si-nanowires-for-the-sensitive-detection-of-trace-explosives
#12
Anping Cao, Wei Zhu, Jin Shang, Johan H Klootwijk, Ernst J R Sudhölter, Jurriaan Huskens, Louis C P M de Smet
Surface-modified silicon nanowire-based field-effect transistors (SiNW-FETs) have proven to be a promising platform for molecular recognition in miniature sensors. In this work, we present a novel nanoFET device for the sensitive and selective detection of explosives based on affinity layers of metal-organic polyhedra (MOPs). The judicious selection of the geometric and electronic characteristics of the assembly units (organic ligands and unsaturated metal site) embedded within the MOP cage allowed for the formation of multiple charge-transfer (CT) interactions to facilitate the selective explosive inclusion...
January 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28071601/applications-of-nuclear-physics
#13
A C Hayes
Today the applications of nuclear physics span a very broad range of topics and fields. This review discusses a number of aspects of these applications, including selected topics and concepts in nuclear reactor physics, nuclear fusion, nuclear non-proliferation, nuclear-geophysics, and nuclear medicine. The review begins with a historic summary of the early years in applied nuclear physics, with an emphasis on the huge developments that took place around the time of World War II, and that underlie the physics involved in designs of nuclear explosions, controlled nuclear energy, and nuclear fusion...
February 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28070907/analysis-of-explosives-by-gc-uv
#14
Jan Andrasko, Ludmila Lagesson-Andrasko, Johan Dahlén, Bengt-Harald Jonsson
A mixture of explosives was analyzed by gas chromatography (GC) linked to ultraviolet (UV) spectrophotometry that enabled detection in the range of 178-330 nm. The gas-phase UV spectra of 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), ethylene glycol dinitrate (EGDN), glycerine trinitrate (NG, nitroglycerine), triacetone triperoxide (TATP), and pentaerythritol tetranitrate (PETN) were successfully recorded. The most interesting aspect of the current application is that it enabled simultaneous detection of both the target analyte and its decomposition products...
January 10, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28067930/esr-study-of-atomic-hydrogen-and-tritium-in-solid-t2-and-t2-h2-matrices-below-1-k
#15
S Sheludiakov, J Ahokas, J Järvinen, L Lehtonen, O Vainio, S Vasiliev, D M Lee, V V Khmelenko
We report on the first ESR study of atomic hydrogen and tritium stabilized in solid T2 and T2:H2 matrices down to 70 mK. The concentrations of T atoms in pure T2 approached 2 × 10(20) cm(-3) (0.60%) and record-high concentrations of H atoms ∼1 × 10(20) cm(-3) (0.33%) were reached in T2:H2 solid mixtures where a fraction of T atoms became converted into H due to the isotopic exchange reaction T + H2 → TH + H. The maximum concentrations of unpaired T and H atoms were limited by their recombination which becomes enhanced by efficient atomic diffusion due to the presence of a large number of vacancies and phonons generated in the matrices by β-particles...
January 9, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28064138/ultrasensitive-photoacoustic-sensor-based-on-quantum-cascade-laser-spectroscopy
#16
Deepak Kumar, Surya Gautam, Subodh Kumar, Saurabh Gupta, Hari B Srivastava, Surya N Thakur, Ramesh C Sharma
The paper focuses on development of ultra-sonic detection system based on laser photoacoustic spectroscopic technique and processing of signal for detection of very low quantity chemicals, explosive materials, and mixtures of these hazardous molecules. The detection system has been developed for the first time with specially designed one side open photo-acoustic cell having high quality factor. Explosive and Hazardous materials like RDX, DNT, PETN, Gun Powder, TATP (Tri acetone tri-peroxide) and their simulants like Acetone were detected in 7 to 9μm wavelength band...
November 23, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28062412/plant-genome-and-transcriptome-annotations-from-misconceptions-to-simple-solutions
#17
Marie E Bolger, Borjana Arsova, Björn Usadel
Next-generation sequencing has triggered an explosion of available genomic and transcriptomic resources in the plant sciences. Although genome and transcriptome sequencing has become orders of magnitudes cheaper and more efficient, often the functional annotation process is lagging behind. This might be hampered by the lack of a comprehensive enumeration of simple-to-use tools available to the plant researcher. In this comprehensive review, we present (i) typical ontologies to be used in the plant sciences, (ii) useful databases and resources used for functional annotation, (iii) what to expect from an annotated plant genome, (iv) an automated annotation pipeline and (v) a recipe and reference chart outlining typical steps used to annotate plant genomes/transcriptomes using publicly available resources...
January 5, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28062106/medical-geology-in-the-framework-of-the-sustainable-development-goals
#18
REVIEW
Jochen Bundschuh, Jyoti Prakash Maity, Shahbaz Mushtaq, Meththika Vithanage, Saman Seneweera, Jerusa Schneider, Prosun Bhattacharya, Nasreen Islam Khan, Ihsan Hamawand, Luiz R G Guilherme, Kathryn Reardon-Smith, Faruque Parvez, Nury Morales-Simfors, Sara Ghaze, Christa Pudmenzky, Louis Kouadio, Chien-Yen Chen
Exposure to geogenic contaminants (GCs) such as metal(loid)s, radioactive metals and isotopes as well as transuraniums occurring naturally in geogenic sources (rocks, minerals) can negatively impact on environmental and human health. The GCs are released into the environment by natural biogeochemical processes within the near-surface environments and/or by anthropogenic activities such as mining and hydrocarbon exploitation as well as exploitation of geothermal resources. They can contaminate soil, water, air and biota and subsequently enter the food chain with often serious health impacts which are mostly underestimated and poorly recognized...
January 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28060974/-socio-demographic-profile-and-factors-associated-with-emergency-contraception-consultations
#19
Sebastián Lavanderos, Camilo Riquelme, Juan Haase, Andrea Morales
BACKGROUND: Emergency contraception refers to contraceptive methods that can be used after a sexual intercourse Aim: To analyze the evolution of emergency contraception (EC) consultations on the Chilean public health system, at a communal level, in relation to the legal changes that recently took place, aimed to ease the delivery of the benefit. To analyze its association with socioeconomic, demographic and municipal healthcare system characteristics. MATERIAL AND METHODS: We analyzed data bases of the Ministry of Health to study EC consultation rates on Chilean communes, including consultations on emergency departments and by rape, from 2008 to 2013...
September 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28057848/a-pipeline-for-drug-target-identification-and-validation
#20
Eusebio Manchado, Chun-Hao Huang, Nilgun Tasdemir, Darjus F Tschaharganeh, John E Wilkinson, Scott W Lowe
Rapid and affordable tumor profiling has led to an explosion of genomic data that is facilitating the development of new cancer therapies. The potential of therapeutic strategies aimed at inactivating the oncogenic lesions that contribute to the aberrant survival and proliferation of tumor cells has yielded remarkable success in some malignancies such as BRAF-mutant melanoma and BCR-ABL expressing chronic myeloid leukemia. However, the direct inhibition of several well-established oncoproteins in some of these cancers is not possible or produces only transient benefits...
January 5, 2017: Cold Spring Harbor Symposia on Quantitative Biology
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