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oxypropylation of Brazilian pine-Fruit Shell evaluated by principal Component Analysis

Journal of Renewable Materials 2018年第7期6卷 715-723页

作者： Stephany Cde Rezende João Apinto Isabel pFernandes Fernanda VLeimann Maria-Filomena Barreiro Laboratory of Separation and Reaction engineering-Laboratory of Catalysis and Materials(LSRe-LCM) Polytechnic Institute of BragançaBragançaPortugal programa de pós-Graduação em Tecnologia de Alimentos(ppGTA) Universidade Tecnológica Federal do Paraná-UTFPR Campus Campo MourãoVia Rosalina Maria Dos Santos1233.CEP 87301-899.Caixa Postal:271Campo Mourão-PR-Brasil Mountain Research Centre(CIMo) Polytechnic Institute of BragançaBragançaPortugal

pine-fruit shell (pFS) is a lignocellulosic residue derived from the fruit of Araucaria angustifolia, a coniferoustree native of South America, part of a whole vegetation of the Atlantic Forest, found in the South and Southwestof Brazil. In this work pFS will be characterized and used in the production of pFS-based polyols throughoxypropylation. Three series were chosen (pFS/propylene oxide (po) (w/v, g/mL) of 30/70, 20/80 and 10/90)with four catalyst levels (5%, 10%, 15% and 20%, (w/w, pFS based)). oxypropylation occurred at moderateconditions of temperature, pressure and time giving rise to liquid polyols with a homopolymer content (ppo)ranging from 4-65%, a hydroxyl number (IoH) between 257-605 mg KoH/g and viscosities (V) varying from0.76 pa.s to 373.90 pa.s (20°C) for the series 20/80 and 10/90, while for the series 30/70, the viscosity reachedvalues higher than 500 pa.s, 20°C. The unreacted pFS (UR) varied between 3.6% and 77.4% (pFS-basis). Afterthe pFS-based polyols production and characterization, a principal component analysis (pCA) was performed inorder to evaluate the established interactions between the used formulation variables and the obtained polyolproperties. The pCA analysis allowed to clarify the interactions between pFS and po contents and the finalbiopolyol properties (ppo, IoH, V and UR). This approach showed to be a simple method to rationally analyzethe influence of the input formulation variables on the final polyol properties.

关键词： principal components analysis Brazilian pine-fruit shell (pFS) oxypropylation polyols

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Infrastructure-based localisation of automated coal mining equipment

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International Journal of Coal Science & Technology 2017年第3期4卷 252-261页

作者： Chad o. Hargrave Craig A. James Jonathon C. Ralston Mining and processing Technologies Research Group CoalMining Research Program CSIRO Energy BrisbaneAustralia

A novel radar-based system for longwall coal mine machine localisation is described. The system, based on a radar-ranging sensor and designed to localise mining equipment with respect to the mine tunnel gate road infrastructure, is developed and trialled in an underground coal mine. The challenges of reliable sensing in the mine environment are considered, and the use of a radar sensor for localisation is justified. The difficulties of achieving reliable positioning using only the radar sensor are examined. Several probabilistic data processing techniques are explored in order to estimate two key localisation parameters from a single radar signal, namely along-track position and across-track position, with respect to the gate road structures. For the case of across-track position, a conventional Kalman filter approach is sufficient to achieve a reliable estimate. However for along-track position estimation, specific infrastructure elements on the gate road rib-wall must be identified by a tracking algorithm. Due to complexities associated with this data processing problem, a novel visual analytics approach was explored in a 3D interactive display to facilitate identification of significant features for use in a classifier algorithm. Based on the classifier output, identified elements are used as location waypoints to provide a robust and accurate mining equipment localisation estimate.

关键词： Localisation · Waypoint navigation · Machine learning · Radar ·Underground · Longwall mining· Automation

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Artificial senses for characterization of food quality

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Journal of Bionic engineering 2004年第3期1卷 159-173页

作者： R.e. Lacey Biological and Agricultural engineering Department Texas A & M University USA

Food quality is of primary concern in the food industry and to the consumer. Systems that mimic human senses have been developed and applied to the characterization of food quality. The five primary senses are: vision, hearing, smell, taste and touch. In the characterization of food quality, people assess the samples sensorially and differentiate “good”from “bad”on a continuum. However, the human sensory system is subjective, with mental and physical inconsistencies, and needs time to work. Artificial senses such as machine vision, the electronic ear, electronic nose, electronic tongue, artificial mouth and even artificial the head have been developed that mimic the human senses. These artificial senses are coordinated individually or collectively by a pat- tern recognition technique, typically artificial neural networks, which have been developed based on studies of the mechanism of the human brain. Such a structure has been used to formulate methods for rapid characterization of food quality. This research presents and discusses individual artificial sensing systems. With the concept of multi-sensor data fusion these sensor systems can work collectively in some way. Two such fused systems, artificial mouth and artificial head, are described and discussed. It indicates that each of the individual systems has their own artificially sensing ability to differentiate food samples. It further indicates that with a more complete mimic of human intelligence the fused systems are more powerful than the individual sys- tems in differentiation of food samples.

关键词： food quality artificial senses quality quantification artificial neural networks feature extraction multi-sensor data fusion

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Science and Disaster Reduction

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International Journal of Disaster Risk Science 2010年第1期1卷 3-9页

作者： Roger e.Kasperson Graduate School of Geography Clark University Worcester MA 01610 USA

A serious gap exists between science and disaster decision making, so that many scientific reports have little impact and fail to inform decision making. This article examines the complex linkages between science and disaster reduction, analyzing the barriers that prevent more effective use of science and suggesting how the gap between science and decision making may be narrowed.

关键词： disaster narrow decision

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Movement initiation of millimeter particles on a rotating rough surface: The role of adhesion

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particuology 2020年第6期18卷 92-99页

作者： Karina de los Angeles Valenzuela Aracena Rodolfo o.Unac Irene Ippolito Ana M.Vidales INFAp CONICETDepartamento de FisicaFacultad de Ciencias Fisico Matematicas y NaturalesUniversidad Nacional de San LuisEjercito de los Andes 950D5700HHWSan LuisArgentina Universidad de Buenos Aires Facultad de IngenieriaGrupo de Medios PorososPaseo Colon 850C1063ACV Buenos AiresArgentina

We performed experiments to determine the critical moment for movement initiation of a millimeter bead on a rotating rough *** corresponding critical angular velocities were measured for glass and stainless-steel ball bearings over two different rough surfaces with glued glass beads.A basic theoretical analysis was developed to explain the observed *** the expectation of a simple approach with the presence of the obstacles offered by a rough surface could be sufficient to describe the problem,we prove here that the sole con sideration of these obstacles,and even friction,are insufficient to explain the results in the range of a few-millimeter glass *** the thermodynamic work of adhesion between surfaces is significant,the adhesion forces must be considered in the force balance for particle detachment:.This effect is a determinant for describing theoretically and numerically the dynamics of millimeter particles.

关键词： Detachment Adhesion Centrifugation

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Mafic-Ultramafic Large Igneous provinces （LIps）： Importance of the pre-Mesozolc record

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episodes 2007年第2期30卷 108-114页

作者： Richard e. ernst ernst Geosciences 43 Margrave Ave Ottawa Ontario K 1T 3Y2 Canada. ＆ Adjunct professor Dept of Earth Sciences Carleton University Ottawa Canada K 1S 5B6.

Mafic-ultramafic magmatic provinces are termed Large Igneous provinces （LIps） if they are large （〉10^5 km^3）, are emplaced in a short duration （ca. 〈 5 myr）（or consist of short duration pulses）, and have intraplate characteristics （i.e. are not associated with normal plate boundary processes）. This category includes the classic continental flood basalts, oceanic plateaus, bimodal-rift （passive margin） related packages, but also those events, mainly of phanerozoic-proterozoic age, where the plumbing system of dykes, sills and layered intrusions has been exposed by erosion. In the Archean, LIps may be represented by the greenstone belts of the tholeiite-komatiite association. Felsic magmatism is associated with many LIps and indeed may be dominant in some cases. LIps are associated with continental breakup, climatic change, extinction events, and major ore deposits especially of the Ni-Cu-pGe type. Continental LIps occur on average every 20-30 myr since 2.6 Ga; the Archean record is too poorly preserved for generalizations. LIps occur both as isolated single events （e.g., 2055 Ma Bushveld event）, as approximately coeval but widely separated events （e.g., 65 Ma Deccan and 62 Ma NAIp）, and as regional clusters associated with supercontinent breakup （e.g., the 830-750 Ma events associated with the breakup of the proposed supercontinent Rodinia）. The LIp record represents a key tool for constraining proterozoic paleocontinental reconstructions.

关键词：铁镁质火成地区超基性重要记录

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A random linear code based secure transmission scheme for wireless fading channels

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Science China(Information Sciences) 2017年第4期60卷 241-243页

作者： Lukman A.oLAWoYIN Nana ZHANG A.o.oLoYeDe Nasir FARUK Hongwen YANG Wireless Communication Center Beijing University of Posts and Telecommunications Department of Telecommunication Science University of Ilorin

Dear editor,Wireless transmissions are vulnerable to potential security threats such as eavesdropping and wiretapping since unauthorized reception is facilitated through wireless channels[1].Traditional system security is mainly implemented in the higher layers of the communication protocol stack,relying on authentication and cryptography[2].The recent researches explore security in the physical layer[3],which can help to protect the information

关键词： code length A random linear code based secure transmission scheme for wireless fading channels

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Meeting guidelines for physical activity,muscle strength,and sleep lowers mortality risk:Commentary on:“Associations between aerobic and musclestrengthening physical activity,sleep duration,and risk of all-cause mortality:A prospective cohort study of 282,473 ***”

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Journal of Sport and Health Science 2023年第1期12卷 3-4页

作者： Barbara e.Ainsworth School of exercise and Health Shanghai University of SportShanghai 200438China

In 2022,Duncan et al.1 published results from an investigation of the combined effects of moderate-to-vigorous aerobic exercise(AeR),muscle-strengthening activities(MSA),and sleep durations on the risks for all-cause mortality in 282,473 *** aged 18-84 *** authors aggregated data from the 2004 to 2014 *** Health Interview Survey(NHIS)2 and followed respondents for 5.4 years to ascertain risks for all-cause *** obtained mortality data from the *** Death Index.

关键词： mortality sleep

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Framing and Language of ethics:Technology,persuasion,and Cultural Context

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Journal of Social Computing 2021年第3期2卷 226-237页

作者： Jasmine e.McNealy the College of Journalism and Communications University of FloridaGainesvilleFL 32601USA

What are the consequences of the language we use for technology,and,how we describe the frameworks regarding technology and its creation,use,and deployment?The language used to describe technology has the possibility to deceive and be *** language is used demonstrates what can occur when one party is able to assert linguistic power over *** way in which organizations frame their relationships with technology is one such power *** article examines the complications of the imagery used for ethics in ***,the author offers a brief overview of how language influences our *** frames used to describe phenomena,including ethical frameworks and technology,allow for the creation of heuristics,or shortcuts that are“good enough”for understanding what is being described and for ***,descriptions matter for relaying meaning and constructing narratives related to ethical uses of technical *** this,the author investigates what we mean by ethics and the codes that corporate,governmental,and other organizations use to depict how they understand their relationship to the technology they create and *** author explores three examples of frames of ethics and descriptions of technology,which though appearing progressive,once understood holistically,fail to adequately describe technology and its possible *** author ends this article with a discussion of the complexity of describing and communicating ethical uses of technology.

关键词： language framing ethics technology culture

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Accelerating into Immunization Agenda 2030 with momentum from China’s successful CoVID-19 vaccination campaign during dynamic CoVID Zero

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Infectious Diseases of poverty 2023年第5期12卷 87-90页

作者： Lance e.Rodewald National Immunization program China CDCDepartment of the National Immunization ProgramChinese Center for Disease Control and Prevention155 Changbai RoadBeijing 102206People’s Republic of China

China’s immunization programs conducted a unified,tightly coordinated CoVID-19 vaccination campaign during the dynamic CoVID Zero period that reached well over 90%of the population with vaccines having>90%effectiveness against serious-to-fatal *** campaign was eight times the size of the annual routine national immunization program,administering 3.4 billion doses of vaccines while monitoring vaccine coverage,acceptability,safety,and *** asset of the routine immunization program had to be strengthened and expanded to attain high coverage and reach hundreds of millions of adults who had not been vaccinated since *** strengthening and expansion were in directions aligned with the World Health organization’s Immunization Agenda 2030,which has a vision that"everyone,everywhere,at every age fully benefits from vaccines for good health and well-being"and requires reaching all children,adolescents,and adults with lifesaving *** from this campaign should not be lost but should be invested into achieving what is possible with a properly resourced national immunization program that is now proven to be capable of reaching everyone in the world’s largest country throughout the life course,and to do so with all vaccines recommended by the World Health organization.

关键词： Vaccines Immunization Immunization program Immunization Agenda 2030 CoVID-19 Life course vaccination

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