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Do protostellar fountains shape the regional core mass function?

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Research in Astronomy and Astrophysics 2013年第6期13卷 719-728页

作者： Jin-Zeng Li Claudio Carlos Mallamaci ricardo César Podest Eloy Actis Vicente Ya-Fang Huang Ana Maria pacheco National Astronomical Observatories Chinese Academy of Sciences Observatorio Astronómico Félix Aguilar Universidad Nacional de San Juan Argentina Av.Benavidez Oeste 8175-J5413FHL Chimbas-San Juan Argentina

The emerging massive binary system associated with AFGL 961 signifies the latest generation of massive star and cluster formation in the Rosette Molecular Complex. We present the detection of a compact cluster of dusty cores toward the AFGL 961 region based on continuum imaging at 1.3 mm by the Submillimeter Array. The binary components of AFGL 961 are associated with the most intensive millime- ter emission cores or envelopes, confirming that they are indeed in an early stage of evolution. The other massive cores, however, are found to congregate in the close vicinity of the central high-mass protostellar binary. They have no apparent infrared counterparts and are, in particular, well aligned transverse to the bipolar molecular outflows originating from AFGL 961. This provides evidence for a likely triggered origin of the massive cores. All 40 individual cores with masses ranging between 0.6 and 15 Mo were detected above a 3 σ level of 3.6 mJy beam-1 （or 0.4 M⊙）, based on which we derive a total core mass of 107 M⊙ in the AFGL 961 region. As compared to the stellar initial mass function, a shallow slope of 1.8 is, however, derived from the best fit to the mass spectrum of the millimeter cores with a prestellar and/or protostel- lar origin. The flatter core mass distribution in the AFGL 961 region is attributed here to dynamic perturbations from the massive molecular outflows that originated from the massive protostellar binary, which may have altered the otherwise more quiescent conditions of core or star formation, enhanced the formation of more massive cores and, as a result, influenced the core mass distribution in its close vicinity.

关键词： stars: formation -- stars: individual (AFGL 961) -- stars: circumstellarmatter -- stars: mass function

Assessment of Genetic Stability Among In Vitro Plants of Arachis retusa Using RAPD and AFLP Markers for Germplasm Preservation

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Journal of Integrative Plant Biology 2007年第3期49卷 307-312页

作者： Rachel Fatima Gagliardi Luiz ricardo Hanai Georgia pacheco Carlos Alberto Oliveira Leonardo Alves Carneiro José Francisco Montenegro Valls Elisabeth Mansur Maria Lucia Carneiro Vieira Laboratório de Micropropagacao e Transformacao de Plantas Universidade do Estado do Rio de Janeiro postal code 20550-013 Maracana Rio de Janeiro Brazil Departamento de Genética - Escola Superior de Agricultura Luiz de Queiroz Universidade de Sao Paulo postal code 13418-900 Piracicaba Brazil Embrapa Recursos Genéticos e Biotecnologia postal code 70770-901 Brasilia Brazil

Arachis retusa Krapov. et W. C. Gregory et Valls is endemic in the West-central region of Brazil, occurring In areas endangered by human actions. The establishment of in vitro preservation methods for wild species of Arachis is an alternative to seed banks for germplasm storage, multiplication and distribution. The risk of genetic changes Induced by tissue culture and the monitoring of the genetic stability of the biological material before, during and after storage must be considered In the context of conservation. Random amplified polymorphlc ONA （RAPO） and amplified fragment length polymorphism （AFLP） fingerprinting were used to evaluate the genetic stability of in vitro plants originated from cotyledons and embryo axes of A. retusa. Cotyledons originated shoots through direct organogenesls and embryo axes displayed muItishoot formation Induced by 110 mmol/L and 8.8 mmol/L BAP, respectively. Ninety genomlc regions （loci） generated from RAPO and 372 from AFLP analyses were evaluated. All amplified fragments detected by both techniques in plants derived from the two explant types were monomorphic. The results Indicate that the recovered shoots are genetically stable at the assessed genomic regions.

关键词： amplified fragment length polymorphism Arachis retusa in vitro preservation micropropagation random amplifiedpolymorphic DNA somaclonal variation

Conversation Table as an Environment for Re-Signification of Subjectivity and Identities in Portuguese as a Foreign Language

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Sino-US English Teaching 2012年第10期9卷 1547-1558页

作者： ricardo Moutinho Denise Gomes Leal da Cruz pacheco University of Macao Macao China

As foreign language teachers, we always wondered about the silence of our students during the lessons. However, after we started the project ＂Conversation Table in Portuguese＂（CTP）, we realized that the students assumed a more active role during the interactions, probably due to the less hierarchical situation they were in. The CTP provided the students the opportunity to express themselves in a foreign language without the interdiction they felt inside the classroom. Within this new context, the lack of confidence they might have been facing when communicating in a foreign language started to disappear, giving place to a motivation to express what they felt in this ＂new＂ language. Therefore, the target language started to become a new locus, a new way that made them not feel scared, but free and curious to say things that they would not say in similar situations when communicating in their mother tongue. In other words, the foreign language can be the place where everything seems to be possible as we do not have the control or interdiction imposed by the social values presented in our society and manifested in our mother tongue. In this study, we analyze some discursive situations taken from a session of CTP in which the students show their new identities in the foreign language. The results show that acquiring another language is much more than acquiring new linguistic aspects of communication, but also giving birth to new identities that make us become new subjects.

关键词： conversation table PFL (Portuguese as a Foreign Language) subjectivity identities re-signification

Non-thermal plasma for exhaust gases treatment

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Frontiers of Mechanical Engineering 2015年第3期10卷 301-305页

作者： Elvia ALVA R. Marquidia pacheco P.l Fernando GOMEZ B. Joel pacheco P. Arturo COLIN C Victor SANCHEZ-MENDIETA ricardo VALDIVIA B Alfredo SANTANA D. Jose HUERTAS C Hilda FRIAS P. Instituto Nacional de Investigaciones Nucleates Ocoyoacac 52750Mexico Universidad Autonoma del Estado de Mexico Toluca 50000 Mexico Instituto Tecnologico y de Estudios Superiores de Monterrey CampusToluca 50110 Mexico

This article describes a study on a non-thermal plasma device to treat exhaust gases in an internal combustion engine. Several tests using a plasma device to treat exhaust gases are conducted on a Honda GX200- 196 cm3 engine at different rotational speeds. A plasma reactor could be efficient in degrading nitrogen oxides and particulate matter. Monoxide and carbon dioxide treatment is minimal. However, achieving 1%-3% degradation may be interesting to reduce the emission of greenhouse gases.

关键词： plasma treatment NOx CO CO2 particulatematter vehicle

Influence of the Chemical Composition of Completion Fluids on the Propagation of Electromagnetic Waves within Oil Wells

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Engineering（科研） 2012年第12期4卷 966-971页

作者： Alexandre Ashade Lassance Cunha Marco Aurélio pacheco José ricardo Bergmann Departamento de Engenharia Elétrica Pontifícia Universidade Católica do Rio de Janeiro Rio de Janeiro Brazil

The propagation of electromagnetic waves in the annular region of oil wells was studied. The present study aims to analyse the propagation attenuation along the well, as well as the input impedance determined by a source placed near the wellhead. A coaxial waveguide model was adopted with heterogeneous dielectrics and losses. First, a wave equation solution for the waveguide is presented, assuming a homogeneous medium with losses, by solving the equation in cylindrical coordinates using the vector potential technique. An uncertainty analysis model is then developed to model the heterogeneous characteristics of the medium. Monte Carlo simulations were performed with the created model using data gathered from the literature. The results of the simulations indicate that propagation in the transverse electromagnetic mode has the smallest attenuation and that for depths of up to 4000 m, there is an attenuation of less than 52 dB. Furthermore, the input impedance ranges from 10 Ω to 10 kΩ because of the uncertainties involved in the problem in question.

关键词： Electromagnetism Oil Well Wireless Telemetry Monte-Carlo Uncertainties Heterogeneous Media

Analysis of the autopsy,toxicological,and psychiatric reports of Portugal’s first major forensic case:partⅢ

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Forensic Sciences Research 2021年第4期6卷 250-272页

作者： ricardo Jorge Dinis-Oliveira Department of Public health and Forensic sciences and Medical educationFaculty of MedicineUniversity of PortoPortoPortugal IINFACTS-Institute of research and advanced Training in health sciences and Technologies Department of sciencesUniversity institute of health sciences(IUCS)advanced Polytechnic and University cooperative(CESPU)CRLGandraPortugal UCIBIO-REQUIMTE Laboratory of ToxicologyDepartment of Biological sciencesFaculty of PharmacyUniversity of PortoPortoPortugal

This work presents an odd historical record obtained through more than 14 years of research regarding one of the first major european forensic *** presumed homicide of Mário Guilherme Augusto de Sampaio in 1890 was allegedly perpetrated by his uncle,the prestigious doctor vicente Urbino de *** famous poisoning had international repercussions for decades,with the participation of several forensic experts that made the history of forensic sciences,namely forensic toxicology and *** third work aims to collect,restore,and analyse all the forensic evidence,particularly from the autopsy,toxicological,and psychiatric forensic *** regarding the life of vicente Urbino de Freitas during his exile in Brazil were also recovered,along with a vast and outstanding assortment of forensic medicine photographs from the 19th century.

关键词： Forensic sciences forensic reports alkaloids history of legal medicine Flores Street vicente Urbino de Freitas JoséAntónio de Sampaio Junior Mário Guilherme Augusto de Sampaio

A Digital System for Managing HL7/CDA Electronic Medical Records Stored in iButtons^(█)

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E-Health Telecommunication Systems and Networks 2014年第3期3卷 24-32页

作者： Edgar Lugo Roberto Munoz Carla C.Vilachá Angel Villegas Jose pacheco ricardo Villegas School of Electrical Engineering University of CaraboboValenciaVenezuela

The goal of this research was to develop a digital system that could allow managing electronic medical records (EMRs) codified under specifications of the Health Level 7/Clinical Document Architecture (HL7/CDA) international standard, and saving them in a portable digital storage device called iButton?. To this end, an USB-based hardware interface for reading and storing EMRs in iButtons was designed and implemented. In addition, a software application for invoking read/write operations on stored EMRs and showing their content on a graphical user interface was also developed, following the Extreme Programming (XP) software development methodology and using Visual Basic .NET as programming language. Tests conducted on the hardware interface showed that it was able to recognize any iButton type, reading and writing data on them as well. Moreover, the system helped in creating empty EMRs in conformance with the HL7/CDA standard, adding and viewing information, and updating it in the iButton. This system offers an easy way for managing and visualizing medical records codified in HL7/CDA, and allows patients to take their updated medical history with them everywhere.

关键词： Medical Records HL7/CDA iButton

South American SLR stations monitoring ground displacement caused by the M8.8 Chilean earthquake of 2010

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Chinese Science Bulletin 2011年第8期56卷 738-742页

作者： YIN ZhiQiang HAN YanBen PODESTA ricardo LIU WeiDong pacheco Ana ALONSO Ester ACTIS Eloy HUANG DongPing ZHAO LiMin WANG Rui XIA JinChao National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Observatorio Astronomico Felix Aguilar San Juan University San Juan 5400 Argentina

The M8.8 Chilean earthquake of February 27,2010 caused a large surface displacement near its *** Laser Ranging(SLR) station 7405,cooperatively operated by Germany and Chile about 130 km from the epicenter was affected by the *** SLR station,No.7406,operated jointly by the National Astronomical Observatories of the Chinese Academy of Sciences and San Juan University of Argentina,was about 600 km from the *** the observations of these two SLR stations with global SLR station observations,we calculate the geocentric coordinates of the two stations based on *** results show that the coordinates of the two stations have changed by varying ***-7405 moved substantially towards the southwest with displacements of about 3.11,0.52 and 0.49 m in X,Y,Z directions;the corresponding displacements for SLR-7406 are about 0.02,0.03 and 0.02 *** solution,as an independent result derived from SLR observations,could provide an essential external check for other positioning techniques such as GPS.

关键词：地表位移 8级地震 SLR 智利 ITRF2000 GPS定位技术中国科学院国家天文台

南美SLR监测的2010年智利8．8级大地震产生的地面位移

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科学通报 2011年第2期56卷 142-146页

作者：尹志强韩延本 PODESTA ricardo 刘卫东 pacheco Ana ALONSO Ester ACTIS Eloy 黄东平赵励民王锐夏金超中国科学院国家天文台北京100012 Observatorio Astronomico Felix Aguilar San Juan University San Juan 5400 Argentina

2010年2月27日,智利发生了8.8级特大地震,该地震使震中附近的地面产生了较大位移.德国与智利合作的卫星激光测距系统SLR-7405距震中仅约130km,其观测受到地震的影响.中国科学院国家天文台与阿根廷合作的SLR-7406系统距震中约600km,利用... 详细信息

2010年2月27日,智利发生了8.8级特大地震,该地震使震中附近的地面产生了较大位移.德国与智利合作的卫星激光测距系统SLR-7405距震中仅约130km,其观测受到地震的影响.中国科学院国家天文台与阿根廷合作的SLR-7406系统距震中约600km,利用这两个SLR站的观测资料并结合全球SLR站的观测资料,在ITRF2000下解算了这两个SLR站点的地心坐标,发现两站的坐标都发生了不同程度的变化.SLR-7405站整体向西南方向发生了较大移动,在X,Y,Z方向上的位移量分别约为3.11,0.52和0.49m,SLR-7406站在3个方向上的位移量分别约为0.02,0.03和0.02m.由SLR这一独立的观测手段得到的结果可以为其他定位观测提供必要的外部检核.

关键词：地震卫星激光测距 ITRF2000 地心坐标南美洲板块运动