21,985 research outputs found
Alepocephalus sp. Slickhead.
No full textSwimming above the seabed.Alepocephalus sp. Slickhead or smoothhead
Seastar Henricia sp.
No full textOn the seafloor, possibly feeding.A Henricia sp. seastar on the seafloor
Jones-matrix dual-comb spectroscopic polarimetry
No full textSpectroscopic polarimetry (SP) is a powerful tool for evaluation of thin film, optical materials, and biological samples because it can provide both polarimetric and spectroscopic characteristics of objects. However, its performance is often hampered by the mechanical instability and the limited data acquisition speed arising from the mechanical polarization modulation. Dual-comb spectroscopic polarimetry (DCSP) based on a combination of SP with dual-comb spectroscopy can acquire optical spectra of amplitude ratio and phase difference in p- and s-polarization components of the output light from simultaneous measurement of optical spectra of optical amplitude and phase in p- and s-polarization components without the need for mechanical polarization modulation. In this article, we combine the DCSP with polarization control pulse sequences (PCPS) with different polarizations and time delays for a more detailed analysis of the sample's polarization response based on Jones matrix. We obtain Jones matrix of a sample as a function of wavelength by measuring those optical spectra while multiplexing the incident light into multiple polarizations instead of a single polarization. Such Jones matrix DCSP (JM-DCSP) is applied for analysis of optical elements with known polarization property and its experimental result is in good agreement with theoretical values, indicating the validity of the proposed method. JM-DCSP will further expand the application scope of SP
Pseudobranchiomma minima Nogueira & Knight-Jones 2002, sp. n.
No full text<i>Pseudobranchiomma minima</i> sp. n. <p>(gures 2, 3)</p> <p> <i>Material examined</i>. Nineteen specimens, all from Ilha dos Alcatrazes. HOLOTYPE MHN-BPO 66/0, mounted; PARATYPES: MHN-BPO 66/1-5, two mounted and three preserved in 70% alcohol; NMW.Z.2000.105.1, two preserved in alcohol and 105.2–4, three mounted. Three specimens observed by SEM not available. Data in parentheses refer to the holotype.</p> <p> <i>Description.</i> Small species with 42–73 segments; thorax and abdomen 5–12.8 (9.1) mm long, 0.75–0.9 (0.84) mm wide, radiolar crown a further 3.2 (3) mm long, crown base in two semicircles each with about ve radioles; external radiolar surfaces with reduced anges and without serrations (gure 3E) or compound eyes; radiolar 1666 J. M. M. Nogueira and P. Knight-Jones</p>Published as part of <i>Nogueira, J. M. M. & Knight-Jones, Phyllis, 2002, A new species of Pseudobranchiomma Jones (Polychaeta: Sabellidae) found amongst Brazilian coral, with a redescription of P. punctata (Treadwell, 1906) from Hawaii, pp. 1661-1670 in Journal of Natural History 36 (14)</i> on page 1665, DOI: 10.1080/00222930110071705, <a href="http://zenodo.org/record/5298736">http://zenodo.org/record/5298736</a>
ECON 665: Economic Experiments & Impact Evaluation SP 2023 Jones
No full textSyllabus - ECON 665: Economic Experiments & Impact Evaluation Spring 2023; Kelly Jones</p
ECON 374: Gender Roles in the Economy SP 2023 Jones
No full textSyllabus - ECON 374: Gender Roles in the Economy Spring 2023; Kelly Jones</p
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