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Using detection dogs and genetic analyses of scat to expand knowledge and assist felid conservation in Misiones, Argentina

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Integrative Zoology 2014年第5期9卷 623-639页

作者： Karen E.DeMATTEO Miguel A.RINAS Carina F.ARGÜELLES Bernardo E.HOLMAN Mario S.DI BITETTI barbara davenport Patricia G.PARKER Lori S.EGGERT Department of Biology University of MissouriSt.LouisUSA WildCare Institute at the Saint Louis Zoo St.LouisUSA Ministerio de Ecología y Recursos Naturales Renovables Argentina Instituto de Biología Subtropical(IBS)-nodo Posadas Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)-Universidad Nacional de Misiones(UNaM)Argentina Facultad de Ciencias Exactas Químicas y NaturalesUNaMArgentina IBS-nodo Puerto Iguazú CONICET-UNaMArgentina Asociación Civil Centro de Investigaciones del Bosque Atlántico Argentina PackLeader Dog Training LLC Division of Biological Sciences University of MissouriColumbiaUSA

Many carnivores require large ranges to meet their ecological and energetic needs;however,anthropogenic changes threaten species and their *** traps have been used to effectively collect data on carnivores in a variety of habitat types;however,a single survey effort is typically limited to species that have similar body size,habitat use and movement patterns,and individual identification of animals is not always pos*** evaluated whether scat detection dogs could effectively survey for 4 wide-ranging felids that vary in these characteristics:jaguars(Panthera onca),pumas(Puma concolor),ocelots(Leopardus pardalis)and oncillas(Leopardus tigrinus).From June to October 2009 and May to August 2011,a detection dog-handler team detected 588 scats,from which 176 unique genotypes were *** assigned sex to 84.7%of the genotyped scats and identified 55 individuals multiple *** effectiveness of these noninvasive techniques(detection dogs and genetic analyses of scat)not only opens the door for additional studies in areas that were previously difficult or impossible with standard survey techniques,but also provides conservationists with a set of tools that overcome some of the limitations associated with the use of camera traps alone.

关键词： conservation detection dogs felids genetics noninvasive techniques

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Integrated heterogeneous silicon/Ⅲ –Ⅴ mode-locked lasers

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Photonics Research 2018年第5期6卷 468-478页

作者： MICHAEL L.davenport SONGTAO LIU JOHN E.BOWERS Department of Electrical and Computer Engineering University of CafifomiaSanta BarbaraCalifomia 93106USA

The mode-locked laser diode has emerged as a promising candidate as a signal source for photonic radar systems,wireless data transmission, and frequency comb spectroscopy. They have the advantages of small size, low cost,high reliability, and low power consumption, thanks to semiconductor technology. Mode-locked lasers based on silicon photonics advance these qualities by the use of highly advanced silicon manufacturing technology. This paper will begin by giving an overview of mode-locked laser diode literature, and then focus on mode-locked lasers on silicon. The dependence of mode-locked laser performance on design details is presented.

关键词： Integrated heterogeneous silicon/Ⅲ-V mode-locked lasers

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Low phase noise hybrid silicon mode-locked lasers

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Frontiers of Optoelectronics 2014年第3期7卷 265-276页

作者： Sudharsanan SRINIVASAN Michael davenport Martijn J. R. HECK John HUTCHINSON Erik NORBERG Gregory FISH John BOWERS Department of Electrical and Computer Engineering University of California Santa Barbara CA 93106 USA Department of Engineering Aarhus University Aarhus Denmark Aurrion Inc. Goleta CA 93117 USA

In this paper, we review recent results on hybrid silicon mode-locked lasers with a focus on low phase noise optical pulse generation. Taking a high level design approach to lowering phase noise, we show the need for long on-chip optical delay lines for mode-locked lasers to reach and overcome material limits. Key results include demonstration of the longest （cavity length 9 cm） integrated on-chip mode locked laser, 14 dB reduction of Lorentzian noise on a 20 GHz radio-frequency （RF） signal, and greater than 55 dB optical supermode noise suppres- sion using harmonically mode locked long cavity laser, 10 GHz passively mode locked laser with 15 kHz linewidth using on-chip all optical feedback stabilization.

关键词： optoelectronic devices mode-locked lasers semiconductor lasers

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