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Subinertial Oscillations on the Amundsen Sea Shelf, Antarctica
Wå,hlin, A. K.,Kalé,n, O.,Assmann, K. M.,Darelius, E.,Ha, H. K.,Kim, T. W.,Lee, S. H. AMERICAN METEOROLOGICAL SOCIETY 2016 Journal of physical oceanography Vol.46 No.9
<P>Mooring data from the western flank of Dotson trough, Amundsen Sea shelf region, show the presence of barotropic oscillations with a period of 40-80 h. The oscillations are visible in velocity, temperature, salinity, and pressure and are comparable to tides in magnitude. The period of the oscillations corresponds to topographic Rossby waves of low group velocity and a wavelength of about 40 km, that is, the half-width of the channel. It is suggested that these resonant topographic Rossby waves cause the observed peak in the wave spectra. The observations show that sparseCTDdata from this region should be treated with caution and need to be complemented with moorings or yo-yo stations in order to give a representative picture for the hydrography.</P>
Mapping cell behavior across a wide range of vertical silicon nanocolumn densities
Buch-Må,nson, Nina,Kang, Dong-Hee,Kim, Dongyoon,Lee, Kyung Eun,Yoon, Myung-Han,Martinez, Karen L. The Royal Society of Chemistry 2017 Nanoscale Vol.9 No.17
<P>Over the past decade, vertical nanostructures have provided novel approaches for biomedical applications such as intracellular delivery/detection, specific cell capture, membrane potential measurement, and cellular activity regulation. Although the feasibility of the vertical nanostructures as a new biological tool has been thoroughly demonstrated, a better understanding of cell behavior on vertical nanostructures, in particular the effects of geometry, is essential for advanced applications. To investigate the cell behavior according to the variation of the spacing between vertical nanostructures, we have interfaced fibroblasts (NIH3T3) with density-controlled vertical silicon nanocolumn arrays (vSNAs). Over a wide range of vSNA densities, we observe three distinct cell settling regimes and investigate both overall cell behavior (adhesions, morphology, and mobility) and detailed biomacromolecule variance (F-actin and focal adhesion) across these regimes. We expect that these systematic observations could serve as a guide for improved nanostructure array design for the desired cell manipulation.</P>
Pisareva, Tatiana,Kwon, Joseph,Oh, Jihyun,Kim, Soohyun,Ge, Changrong,Wieslander, Å,ke,Choi, Jong-Soon,Norling, Birgitta American Chemical Society 2011 Journal of proteome research Vol.10 No.8
<P>Cyanobacteria are unique eubacteria with an organized subcellular compartmentalization of highly differentiated internal thylakoid membranes (TM), in addition to the outer and plasma membranes (PM). This leads to a complicated system for transport and sorting of proteins into the different membranes and compartments. By shotgun and gel-based proteomics of plasma and thylakoid membranes from the cyanobacterium <I>Synechocystis</I> sp. PCC 6803, a large number of membrane proteins were identified. Proteins localized uniquely in each membrane were used as a platform describing a model for cellular membrane organization and protein intermembrane sorting and were analyzed by multivariate sequence analyses to trace potential differences in sequence properties important for insertion and sorting to the correct membrane. Sequence traits in the C-terminal region, but not in the N-terminal nor in any individual transmembrane segments, were discriminatory between the TM and PM classes. The results are consistent with a contact zone between plasma and thylakoid membranes, which may contain short-lived “hemifusion” protein traffic connection assemblies. Insertion of both integral and peripheral membrane proteins is suggested to occur through common translocons in these subdomains, followed by a potential translation arrest and structure-based sorting into the correct membrane compartment.</P><P>Are thylakoid and plasma membranes in <I>Synechocystis</I> (A) connected, or (B) physically separated? Integral membrane proteins with unique localization from proteomics were used for multivariate sequence property analyses. Different properties were found in the protein C-terminal tails. Since integral membrane proteins are cotranslationally inserted, this supports a common insertion site of these proteins for both membranes and a connection between them, allowing a restricted lateral diffusion to the final destination.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jprobs/2011/jprobs.2011.10.issue-8/pr200268r/production/images/medium/pr-2011-00268r_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/pr200268r'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/pr200268r'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/pr200268r'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/pr200268r'>ACS Electronic Supporting Info</A></P>
The first report on Amphipoda from Marian Cove, King George Island, Antarctic
Kim, J. H.,JaÅ,¼dÅ,¼ewska, A.,Choi, H. G.,Kim, W. Springer Science and Business Media 2014 Oceanological and hydrobiological studies Vol.43 No.1
This is a first account on amphipods from Marian Cove in Maxwell Bay, near the King Sejong Station, King George Island, the Antarctic. We have conducted a survey in 14 localities in the shallow sublittoral zone. A total of 22 amphipod species belonging to 12 families were identified. Six of these species were new for the whole Maxwell Bay. Our findings increase the amphipod fauna of Maxwell Bay from 55 to 61 species. The dominant species in the shallow sublittoral zone of Marian Cove were: Cheirimedon femoratus and Gondogeneia antarctica, followed by Bovallia gigantea, Orchomenella cf. ultima, Paradexamine fissicauda, Prostebbingia brevicornis, Pariphimedia integricauda, and Jassa wandeli.
International <i>Salmonella</i> Typhimurium DT104 Infections, 1992–2001
Helms, Morten,Ethelberg, Steen,Mølbak, Kå,re U.S. Department of Health and Human Services * Cen 2005 Emerging Infectious Diseases Vol.11 No.6
<P>The incidence of multidrug-resistant (MDR) <I>Salmonella</I> Typhimurium infections in humans, and in particular MDR definitive phage type 104 (DT104), has increased substantially in many countries in the last 2 decades, often associated with increased illness. To examine the magnitude of this problem, a survey was conducted among countries with available antimicrobial resistance or phage typing surveillance data. A total of 29, primarily industrialized, countries participated in the survey, which covered the years 1992–2001. Overall, the incidence of MDR <I>S</I>. Typhimurium and DT104 increased continuously during this period, although the problem affected primarily Europe and North America. The increase appeared to have peaked in the United Kingdom but not in other countries. Also, the incidence of quinolone-resistant <I>S</I>. Typhimurium was increasing. This survey implies that MDR <I>S</I>. Typhimurium constitutes an increasing public health problem in large parts of the world and emphasizes the importance of surveillance and control programs.</P>
Lee, Ye-Seul,Sehlstedt, Isac,Olausson, Hå,kan,Jung, Won-Mo,Wallraven, Christian,Chae, Younbyoung Elsevier 2018 Physiology and behavior Vol.185 No.-
<P><B>Abstract</B></P> <P>The discovery that pleasant touch is coded by C-tactile fibers has generated considerable research interest and increased understanding of the skin as a channel for social information via cutaneous senses. However, no study has differentiated between the pleasant response to visual and tactile non-human stimulations. Our study investigated pleasant touch in which the visual and haptic touch information was obtained from an affective, but non-social experience, by a custom-built non-human device. Participants (n=19) received soft brush strokes on their lower left arm delivered by a rotary tactile stimulator (physical session) or watched a video of an arm being stroked by a rotary tactile stimulator (visual session). The brush strokes were delivered at the same velocities (0.3, 1, 3, 10, 30cm/s) and force (0.4N) in both sessions. After each trial, participants rated the pleasantness of the touch. Analysis of variance was used to assess the effects of velocity and modality (visual touch vs. physical touch) on the pleasantness rating. Participants rated strokes between 1 and 10cm/s as most pleasant under both conditions. The pleasantness rating patterns differed significantly among velocities; however, no significant differences were found between modalities. Visual and physical (without human-to-human interaction) touch elicited similar behavioral responses, including an inverted U-shaped perception of pleasantness. These findings suggest that the pleasantness of touch is influenced by the velocity of the strokes in both visual and physical touch with a non-human stimulation.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Felt and seen touch elicits similar behavioral patterns of pleasantness. </LI> <LI> Affective touch is modulated by the velocity of stroking without an inter-personal interaction. </LI> <LI> The perception of pleasantness upon touch involves both visual and haptic information. </LI> </UL> </P>
Uppsala Consensus Statement on Environmental Contaminants and the Global Obesity Epidemic
Lind, Lars,Lind, P. Monica,Lejonklou, Margareta H.,Dunder, Linda,Bergman, Å,ke,Guerrero-Bosagna, Carlos,Lampa, Erik,Lee, Hong Kyu,Legler, Juliette,Nadal, Angel,Pak, Youngmi Kim,Phipps, Richard P. National Institute of Environmental Health Science 2016 Environmental health perspectives Vol.124 No.5
<P>Summary: From the lectures presented at the 2nd International Workshop on Obesity and Environmental Contaminants, which was held in Uppsala, Sweden, on 8–9 October 2015, it became evident that the findings from numerous animal and epidemiological studies are consistent with the hypothesis that environmental contaminants could contribute to the global obesity epidemic. To increase awareness of this important issue among scientists, regulatory agencies, politicians, chemical industry management, and the general public, the authors summarize compelling scientific evidence that supports the hypothesis and discuss actions that could restrict the possible harmful effects of environmental contaminants on obesity.</P>