734 research outputs found
FASINEX (Frontal Air-Sea Interaction Experiment) moored instrumentation
In 1986, FASINEX, a Frontal Air-Sea Interaction Experiment,
a multi-investigator cooperative experiment, was conducted
to study the role of horizontal variability in air-sea
interaction in the persistent front formed in the
subtropical convergence zone south of Bermuda. Aimed at
investigating all aspects of the atmospheric and oceanic
variables related to the formation and maintenance of the
front, an array of meteorological and current meter moorings
was deployed by the Woods Hole Oceanographic Institution
Buoy Group in 5400 meters of water . Two subsurface current
meter moorings were deployed in October, 1984; five surface
meteorological and current meter moorings and four Profiling
Current Meter (PCM) moorings were set in January 1986 . All
except one PCM mooring, which was lost, were recovered in
June 1986. This report discusses the extensive preparations
of, and modifications to, the Woods Hole Oceanographic
Institution Buoy Group instruments placed on the five
surface moorings. The equipment included 30 vector
measuring current meters, ten vector averaging current
meters and five vector averaging wind recorders .Funding was provided by the Office of Naval Research
under contract Number N00014-84-C-0134
Tracking system analytic calibration activities for the Mariner Mars 1969 mission
Calibration activity of Deep Space Network in support of Mars encounter phase of Mariner Mars 1969 missio
Pan American Climate Study (PACS) mooring deployment cruise report : R/V Roger Revelle cruise number Genesis 4, 9 April-5 May 1997
Three surface moorings were deployed in the eastern equatorial Pacifc from the R/V Roger Revelle as part of the Pan American Climate
Study (PACS). PACS is a NOAA-funded study with the goal of investigating links between sea surface temperature varabilty in the tropical
oceans near the Americas and climate over the American continents. The three moorings were deployed near 125°W, spanning the strong
meridional sea surface temperature gradient associated with the cold tongue south of the equator and the warmer ocean north of the equator,
near the northernmost, summer location of the Intertropical Convergence Zone. The mooring deployment was done to improve
understading of the air-sea fluxes and of the processes that control the evolution of the sea surface temperature field in the region.
Two surface moorings of the Upper Ocean Processes Group at the Woods Hole Oceanographic Institution (WHOI) were deployed-one at
3°S, 125°W and the other at lO°N, 125°W. One mooring from the Ocean Circulation Group (R. Weisberg) at the University of South Florida
(USP) was deployed on the equator at 128°W.
The buoys of the two WHOI moorings were each equipped with meteorological instrmentation, including a Vector Averaging Wind
Recorder, and an Improved Meteorological (IMET) system. The WHOI moorings also carried Vector Measurng Current Meters,
single-point temperature recorders, and conductivity and temperature recorders located in the upper 200 meters of the mooring line. In
addition to the instrumentation noted above, a variety of other instruments, including an acoustic current meter, acoustic doppler current
meters, bio-optical instrument packages and an acoustic rain gauge, were deployed during the PACS field program. The USF mooring had an
IMET system on the surface buoy and for oceanographic instrumentation, two RD Instruments acoustic doppler current profilers,
single-point temperature recorders, and conductivity and temperature recorders. Conductivity-temperature-depth (CTD) profiles were made
at each mooring site and during the transit between mooring locations.
This report describes, in a general manner, the work that took place durig the Genesis 4 cruise aboard the R/V Roger Revelle. The three
surface moorings deployed during this cruise will be recovered and re-deployed after approximately nine months, with a final recovery
planned for 17 months after the first setting. Details of the mooring designs and preliminary data from the CT profies are included.Funding was provided by the National Oceanic and Atmospheric Administration under
Contract No. NA66GP0130
Detection of chromosome aberrations in the human interphase nucleus by visualization of specific target DNAs with radioactive and non-radioactive in situ hybridization techniques: diagnosis of trisomy 18 with probe L1.84
The localization of chromosome 18 in human interphase nuclei is demonstrated by use of radioactive and nonradioactive in situ hybridization techniques with a DNA clone designated L1.84. This clone represents a distinct subpopulation of the repetitive human alphoid DNA family, located in the centric region of chromosome 18. Under stringent hybridization conditions hybridization of L1.84 is restricted to chromosome 18 and reflects the number of these chromosomes present in the nuclei, namely, two in normal diploid human cells and three in nuclei from cells with trisomy 18. Under conditions of low stringency, cross-hybridization with other subpopulations of the alphoid DNA family occurs in the centromeric regions of the whole chromosome complement, and numerous hybridization sites are detected over interphase nuclei. Detection of chromosome-specific target DNAs by non-radioactive in situ hybridization with appropriate DNA probes cloned from individual chromosomal subregions presents a rapid means of identifying directly numerical or even structural chromosome aberrations in the interphase nucleus. Present limitations and future applications of interphase cytogenetics are discussed
The Formal Dynamism of Categories: Stops vs. Fricatives, Primitivity vs. Simplicity
Minimalist Phonology (MP; Pöchtrager 2006) constructs its theory based on the phonological epistemological principle (Kaye 2001) and exposes the arbitrary nature of standard Government Phonology (sGP) and strict-CV (sCV), particularly with reference to their confusion of melody and structure.
For Pöchtrager, these are crucially different, concluding that place of articulation is melodic (expressed with elements), while manner of articulation is structural. In this model, the heads (xN and xO) can license and incorporate the length of the other into their own interpretation, that is xN influences xO projections as well as its own and vice versa. This dynamism is an aspect of the whole framework and this paper in particular will show that stops and fricatives evidence a plasticity of category and that, although fricatives are simpler in structure, stops are the more primitive of the two.
This will be achieved phonologically through simply unifying the environment of application of the licensing forces within Pöchtrager's otherwise sound onset structure. In doing so, we automatically make several predictions about language acquisition and typology and show how lenition in Qiang (Sino-Tibetan) can be more elegantly explained
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Rhythm in the speech of a person with right hemisphere damage: Applying the pairwise variability index
Although several aspects of prosody have been studied in speakers with right hemisphere damage (RHD), rhythm remains largely uninvestigated. This study compares the rhythm of an Australian English speaker with right hemisphere damage (due to a stroke, but with no concomitant dysarthria) to that of a neurologically unimpaired individual. The speakers' rhythm is compared using the pairwise variability index (PVI) which allows for an acoustic characterization of rhythm by comparing the duration of successive vocalic and intervocalic intervals. A sample of speech from a structured interview between a speech and language therapist and each participant was analysed. Previous research has shown that speakers with RHD may have difficulties with intonation production, and therefore it was hypothesized that there may also be rhythmic disturbance. Results show that the neurologically normal control uses a similar rhythm to that reported for British English (there are no previous studies available for Australian English), whilst the speaker with RHD produces speech with a less strongly stress-timed rhythm. This finding was statistically significant for the intervocalic intervals measured (t(8) = 4.7, p < .01), and suggests that some aspects of prosody may be right lateralized for this speaker. The findings are discussed in relation to previous findings of dysprosody in RHD populations, and in relation to syllable-timed speech of people with other neurological conditions
Detection of chromosome aberrations in metaphase and interphase tumor cells by in situ hybridization using chromosome-specific library probes
Chromosome aberrations in two glioma cell lines were analyzed using biotinylated DNA library probes that specifically decorate chromosomes 1, 4, 7, 18 and 22 from pter to qter. Numerical changes, deletions and rearrangements of these chromosomes were radily visualized in metaphase spreads, as well as in early prophase and interphase nuclei. Complete chromosomes, deleted chromosomes and segments of translocated chromosomes were rapidly delineated in very complex karyotypes. Simultaneous hybridizations with additional subregional probes were used to further define aberrant chromosomes. Digital image analysis was used to quantitate the total complement of specific chromosomal DNAs in individual metaphase and interphase cells of each cell line. In spite of the fact that both glioma lines have been passaged in vitro for many years, an under-representation of chromosome 22 and an over-representation of chromosome 7 (specifically 7p) were observed. These observations agree with previous studies on gliomas. In addition, sequences of chromosome 4 were also found to be under-represented, especially in TC 593. These analyses indicate the power of these methods for pinpointing chromosome segments that are altered in specific types of tumors
Delineation of individual human chromosomes in metaphase and interphase cells by in situ suppression hybridization using recombinant DNA libraries
A method of in situ hybridization for visualizing individual human chromosomes from pter to qter, both in metaphase spreads and interphase nuclei, is reported. DNA inserts from a single chromosomal library are labeled with biotin and partially preannealed with a titrated amount of total human genomic DNA prior to hybridization with cellular or chromosomal preparations. The cross-hybridization of repetitive sequences to nontargeted chromosomes can be markedly suppressed under appropriate preannealing conditions. The remaining single-stranded DNA is hybridized to specimens of interest and detected with fluorescent or enzymelabeled avidin conjugates following post-hybridization washes. DNA inserts from recombinant libraries for chromosomes 1, 4, 7, 8, 13, 14, 18, 20, 21, 22, and X were assessed for their ability to decorate specifically their cognate chromosome; most libraries proved to be highly specific. Quantitative densitometric analyses indicated that the ratio of specific to nonspecific hybridization signal under optimal preannealing conditions was at least 8:1. Interphase nuclei showed a cohesive territorial organization of chromosomal domains, and laserscanning confocal fluorescence microscopy was used to aid the 3-D visualization of these domains. This method should be useful for both karyotypic studies and for the analysis of chromosome topography in interphase cells
Evaluating the efficacy of independent versus simultaneous management strategies to address ecological and genetic threats to population viability
ACKNOWLEDGMENTS We thank Sue Bignal, all land-owners and farmers and everyone who helped with fieldwork on Islay. We thank members of the Scottish Chough Forum, particularly Rae Mckenzie and Des Thompson for valuable input on management scenarios. AET was funded by Scottish Natural Heritage (SNH) and Royal Society for the Protection of Birds. SRF was funded by a Natural Environment Research Council iCASE studentship supported by SNH.Peer reviewedPublisher PD
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