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https://www.readbyqxmd.com/read/28231643/three-dimensional-reconstruction-computed-tomography-evaluation-of-the-tunnel-location-and-angle-in-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction-a-comparison-of-the-anteromedial-portal-and-outside-in-techniques
#1
Kang-Il Kim, Sang Hak Lee, Chanil Bae, Sung Hae Bae
Purpose: The purpose of this study was to compare the geometry and position of the femoral tunnel between the anteromedial portal (AMP) and outside-in (OI) techniques after anatomic single-bundle anterior cruciate ligament (ACL) reconstruction. Materials and Methods: We evaluated 82 patients undergoing single-bundle ACL reconstruction with hamstring autografts using either the AMP (n=40) or OI (n=42) technique. The locations of the tunnel apertures were assessed by postoperative 3-dimensional computed tomography imaging...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231315/functional-xanthophyll-cycle-and-pigment-content-of-a-kleptoplastic-benthic-foraminifer-haynesina-germanica
#2
Thierry Jauffrais, Bruno Jesus, Vona Méléder, Emmanuelle Geslin
Some shallow water benthic foraminifera are able to retain functional chloroplasts (kleptoplasts) from their food source, i.e. diatoms. Here we assessed the functionality of the kleptoplast xanthophyll cycle (XC, i.e. the main diatom short-term photo-regulation mechanism) and we surveyed Haynesina germanica kleptoplast pigment composition over time and at different light regimes. Six common diatom lipophilic pigments were detected, two chlorophylls (Chl a, Chl c) and four carotenoids (fucoxanthin and by-products, diadinoxanthin, diatoxanthin and β-carotene), the same pigment profile as the diatom species frequently isolated at the sampling site...
2017: PloS One
https://www.readbyqxmd.com/read/28230189/widespread-methane-seepage-along-the-continental-margin-off-svalbard-from-bj%C3%A3-rn%C3%A3-ya-to-kongsfjorden
#3
S Mau, M Römer, M E Torres, I Bussmann, T Pape, E Damm, P Geprägs, P Wintersteller, C-W Hsu, M Loher, G Bohrmann
Numerous articles have recently reported on gas seepage offshore Svalbard, because the gas emission from these Arctic sediments was thought to result from gas hydrate dissociation, possibly triggered by anthropogenic ocean warming. We report on findings of a much broader seepage area, extending from 74° to 79°, where more than a thousand gas discharge sites were imaged as acoustic flares. The gas discharge occurs in water depths at and shallower than the upper edge of the gas hydrate stability zone and generates a dissolved methane plume that is hundreds of kilometer in length...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229524/dermal-morphological-changes-following-salicylic-acid-peeling-and-microdermabrasion
#4
Amira A Abdel-Motaleb, Eman E Abu-Dief, Mahmoud Ra Hussein
BACKGROUND: Microdermabrasion and chemical peeling are popular, inexpensive, and safe methods for treatment of some skin disorders and to rejuvenate skin. OBJECTIVES: To study the alterations of the dermal connective tissue following salicylic acid peeling and microdermabrasion. METHODS: Twenty patients were participated in our study. All participants underwent facial salicylic acid 30% peel or microdermabrasion (10 cases in each group) weekly for 6 weeks...
February 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28229261/revision-of-neolebouria-gibson-1976-digenea-opecoelidae-with-trilobovarium-n-g-for-species-infecting-tropical-and-subtropical-shallow-water-fishes
#5
Storm B Martin, Scott C Cutmore, Thomas H Cribb
A new opecoelid trematode is reported from fishes of the Lethrinidae, Lutjanidae and Nemipteridae off Lizard Island on the northern Great Barrier Reef, Australia. The new species keys to Neolebouria Gibson, 1976 and shows strong similarity to several species of that genus, but is not consistent with the type-species, N. georgiensis Gibson, 1976, or others known from temperate/polar and/or deep-sea fishes. The new species is also phylogenetically distant from N. lanceolata (Price, 1934) Reimer, 1987, the only representative of the genus for which molecular data are available...
February 22, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28228509/the-use-of-clamping-grips-and-friction-pads-by-tree-frogs-for-climbing-curved-surfaces
#6
Thomas Endlein, Aihong Ji, Shanshan Yuan, Iain Hill, Huan Wang, W Jon P Barnes, Zhendong Dai, Metin Sitti
Most studies on the adhesive mechanisms of climbing animals have addressed attachment against flat surfaces, yet many animals can climb highly curved surfaces, like twigs and small branches. Here we investigated whether tree frogs use a clamping grip by recording the ground reaction forces on a cylindrical object with either a smooth or anti-adhesive, rough surface. Furthermore, we measured the contact area of fore and hindlimbs against differently sized transparent cylinders and the forces of individual pads and subarticular tubercles in restrained animals...
February 22, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28228118/the-association-of-kidney-function-with-repetitive-breath-hold-diving-activities-of-female-divers-from-korea-haenyeo
#7
Yun Jung Oh, Ji Yong Jung, Sung Soo Kim, Kyong-Suk Chae, Jiwon Rhu, Chungsik Lee
BACKGROUND: Voluntary apnea during breath-hold diving (BHD) induces cardiovascular changes including bradycardia, reduced cardiac output, and arterial hypertension. Although the impacts of repetitive BHD on cardiovascular health have been studied previously, the long-term risk for kidney dysfunction has never been investigated. METHODS: A cross-sectional propensity score-matched study was performed to evaluate the influence of repetitive long-lasting BHD on kidney function...
February 23, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28227372/multimodal-embryonic-imaging-using-optical-coherence-tomography-selective-plane-illumination-microscopy-and-optical-projection-tomography
#8
M Singh, C Wu, D Mayerich, M E Dickinson, I V Larina, K V Larin, M Singh, C Wu, D Mayerich, M E Dickinson, I V Larina, K V Larin, I V Larina, M Singh, K V Larin, D Mayerich, M E Dickinson, C Wu
The murine model is commonly utilized for studying developmental diseases. Different optical techniques have been developed to image mouse embryos, but each has its own set of limitations and restrictions. In this study, we compare the performance of the well-established technique of optical coherence tomography (OCT) to the relatively new methods of selective plane illumination microscopy (SPIM) and optical projection tomography (OPT) to assess murine embryonic development. OCT can provide label free high resolution images of the mouse embryo, but suffers from light attenuation that limits visualization of deeper structures...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227123/non-invasive-optical-imaging-techniques-for-burn-injured-tissue-detection-for-debridement-surgery
#9
Juan Heredia-Juesas, Jeffrey E Thatcher, Yang Lu, John J Squiers, Darlene King, Wensheng Fan, J Michael DiMaio, Jose A Martinez-Lorenzo, Juan Heredia-Juesas, Jeffrey E Thatcher, Yang Lu, John J Squiers, Darlene King, Wensheng Fan, J Michael DiMaio, Jose A Martinez-Lorenzo, Jeffrey E Thatcher, Darlene King, Jose A Martinez-Lorenzo, Wensheng Fan, Juan Heredia-Juesas, Yang Lu, John J Squiers
Burn debridement is a challenging technique that requires significant skill to identify regions requiring excision and appropriate excision depth. A machine learning tool is being developed in order to assist surgeons by providing a quantitative assessment of burn-injured tissue. Three noninvasive optical imaging techniques capable of distinguishing between four kinds of tissue-healthy skin, viable wound bed, deep burn, and shallow burn-during serial burn debridement in a porcine model are presented in this paper...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227109/probabilistic-characterization-of-sleep-architecture-home-based-study-on-healthy-volunteers
#10
Gary Garcia-Molina, Sreeram Vissapragada, Anandi Mahadevan, Robert Goodpaster, Brady Riedner, Michele Bellesi, Giulio Tononi, Gary Garcia-Molina, Sreeram Vissapragada, Anandi Mahadevan, Robert Goodpaster, Brady Riedner, Michele Bellesi, Giulio Tononi, Robert Goodpaster, Brady Riedner, Michele Bellesi, Giulio Tononi, Gary Garcia-Molina, Sreeram Vissapragada, Anandi Mahadevan
The quantification of sleep architecture has high clinical value for diagnostic purposes. While the clinical standard to assess sleep architecture is in-lab based polysomnography, higher ecological validity can be obtained with multiple sleep recordings at home. In this paper, we use a dataset composed of fifty sleep EEG recordings at home (10 per study participant for five participants) to analyze the sleep stage transition dynamics using Markov chain based modeling. The statistical analysis of the duration of continuous sleep stage bouts is also analyzed to identify the speed of transition between sleep stages...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226992/multi-layer-low-frequency-tissue-equivalent-phantoms-for-noninvasive-test-of-shallow-implants-and-evaluating-antenna-body-interaction
#11
Lawrence Fomundam, Jenshan Lin, Lawrence Fomundam, Jenshan Lin, Jenshan Lin, Lawrence Fomundam
In this work, a tissue equivalent compound phantom with dielectric properties equivalent to an average human body surface has been developed for a low frequency operating range of 30 MHz to 200 MHz. The compound phantom consists of skin, fat, and muscle layers respectively. The phantom is simple to fabricate with low cost components. A custom coaxial test fixture has been developed to characteristic phantom dielectric properties, which eliminates use of a specialized expensive dielectric measurement probe. The proposed composite phantom can be used as a noninvasive technique to evaluate shallow biomedical implants, antenna-body interaction, and specific absorption rate of tissue media...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226868/hardware-friendly-seizure-detection-with-a-boosted-ensemble-of-shallow-decision-trees
#12
Mahsa Shoaran, Masoud Farivar, Azita Emami, Mahsa Shoaran, Masoud Farivar, Azita Emami, Masoud Farivar, Azita Emami, Mahsa Shoaran
Efficient on-chip learning is becoming an essential element of implantable biomedical devices. Despite a substantial literature on automated seizure detection algorithms, hardware-friendly implementation of such techniques is not sufficiently addressed. In this paper, we propose to employ a gradientboosted ensemble of decision trees to achieve a reasonable trade-off between detection accuracy and implementation cost. Combined with the proposed feature extraction model, we show that these classifiers quickly become competitive with more complex learning models previously proposed for hardware implementation, with only a small number of low-depth (d <; 4) "shallow" trees...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225173/monolithic-stationary-phases-with-a-longitudinal-gradient-of-porosity
#13
Jiří Urban, Tomáš Hájek, Frantisek Svec
The duration of the hypercrosslinking reaction has been used to control the extent of small pores formation in polymer-based monolithic stationary phases. Segments of five columns hypercrosslinked for 30-360 min were coupled via zero-volume unions to prepare columns with segmented porosity gradients. The steepness of the porosity gradient affected column efficiency, mass transfer resistance, and separation of both small molecules alkylbenzenes and high molar mass polystyrene standards. In addition, the segmented column with the steepest porosity gradient was prepared as a single column with a continuous porosity gradient...
February 22, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28224985/episodic-release-of-co2-from-the-high-latitude-north-atlantic-ocean-during-the-last-135%C3%A2-kyr
#14
Mohamed M Ezat, Tine L Rasmussen, Bärbel Hönisch, Jeroen Groeneveld, Peter deMenocal
Antarctic ice cores document glacial-interglacial and millennial-scale variability in atmospheric pCO2 over the past 800 kyr. The ocean, as the largest active carbon reservoir on this timescale, is thought to have played a dominant role in these pCO2 fluctuations, but it remains unclear how and where in the ocean CO2 was stored during glaciations and released during (de)glacial millennial-scale climate events. The evolution of surface ocean pCO2 in key locations can therefore provide important clues for understanding the ocean's role in Pleistocene carbon cycling...
February 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28223715/massive-production-of-abiotic-methane-during-subduction-evidenced-in-metamorphosed-ophicarbonates-from-the-italian-alps
#15
Alberto Vitale Brovarone, Isabelle Martinez, Agnès Elmaleh, Roberto Compagnoni, Carine Chaduteau, Cristiano Ferraris, Imène Esteve
Alteration of ultramafic rocks plays a major role in the production of hydrocarbons and organic compounds via abiotic processes on Earth and beyond and contributes to the redistribution of C between solid and fluid reservoirs over geological cycles. Abiotic methanogenesis in ultramafic rocks is well documented at shallow conditions, whereas natural evidence at greater depths is scarce. Here we provide evidence for intense high-pressure abiotic methanogenesis by reduction of subducted ophicarbonates. Protracted (≥0...
February 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28223492/role-of-degassing-of-the-noril-sk-nickel-deposits-in-the-permian-triassic-mass-extinction-event
#16
Margaux Le Vaillant, Stephen J Barnes, James E Mungall, Emma L Mungall
The largest mass extinction event in Earth's history marks the boundary between the Permian and Triassic Periods at circa 252 Ma and has been linked with the eruption of the basaltic Siberian Traps large igneous province (SLIP). One of the kill mechanisms that has been suggested is a biogenic methane burst triggered by the release of vast amounts of nickel into the atmosphere. A proposed Ni source lies within the huge Noril'sk nickel ore deposits, which formed in magmatic conduits widely believed to have fed the eruption of the SLIP basalts...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28221995/deep-cascade-cascading-3d-deep-neural-networks-for-fast-anomaly-detection-and-localization-in-crowded-scenes
#17
Mohammad Sabokrou, Mohsen Fayyaz, Mahmood Fathy, Reinhard Klette
This paper proposes a fast and reliable method for anomaly detection and localization in video data showing crowded scenes. Time-efficient anomaly localization is an ongoing challenge and subject of this paper. We propose a cubicpatch- based method, characterised by a cascade of classifiers, which makes use of an advanced feature-learning approach. Our cascade of classifiers has two main stages. First, a light but deep 3D auto-encoder is used for early identification of "many" normal cubic patches. This deep network operates on small cubic patches as being the first stage, before carefully resizing remaining candidates of interest, and evaluating those at the second stage using a more complex and deeper 3D convolutional neural network (CNN)...
February 17, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28220874/modeling-contribution-of-shallow-groundwater-to-evapotranspiration-and-yield-of-maize-in-an-arid-area
#18
Xiaoyu Gao, Zailin Huo, Zhongyi Qu, Xu Xu, Guanhua Huang, Tammo S Steenhuis
Capillary rise from shallow groundwater can decrease the need for irrigation water. However, simple techniques do not exist to quantify the contribution of capillary flux to crop water use. In this study we develop the Agricultural Water Productivity Model for Shallow Groundwater (AWPM-SG) for calculating capillary fluxes from shallow groundwater using readily available data. The model combines an analytical solution of upward flux from groundwater with the EPIC crop growth model. AWPM-SG was calibrated and validated with 2-year lysimetric experiment with maize...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28218533/water-table-dynamics-and-biogeochemical-cycling-in-a-shallow-variably-saturated-floodplain
#19
Steven B Yabusaki, Michael J Wilkins, Yilin Fang, Kenneth H Williams, Bhavna Arora, John R Bargar, Harry R Beller, Nicholas J Bouskill, Eoin L Brodie, John N Christensen, Mark E Conrad, Robert E Danczak, Eric King, Nicolas F Spycher, Carl I Steefel, Tetsu K Tokunaga, Roelof Jan Versteeg, Scott R Waichler, Haruko M Wainwright
Three-dimensional variably saturated flow and multicomponent biogeochemical reactive transport modeling, based on published and newly generated data, is used to better understand the interplay of hydrology, geochemistry, and biology controlling the cycling of carbon, nitrogen, oxygen, iron, sulfur, and uranium in a shallow floodplain. In this system, aerobic respiration generally maintains anoxic groundwater below an oxic vadose zone until seasonal snowmelt-driven water table peaking transports dissolved oxygen (DO) and nitrate from the vadose zone into the alluvial aquifer...
February 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28218314/implicating-the-contributions-of-surface-and-bulk-states-on-carrier-trapping-and-photocurrent-performance-of-bivo4-photoanodes
#20
B Pattengale, J Huang
Monoclinic-scheelite BiVO4 has been widely studied as a promising oxygen evolution reaction (OER) catalyst in artificial photosynthesis. Though significant progress to improve or augment its catalysis performance has been made, fundamental understanding of its relatively poor performance as a bare material is lacking. In this paper, we report the correlation of the surface structure and trap states with charge separation efficiency and OER performance of bare BiVO4 photoanodes via varying the sample thickness...
February 20, 2017: Physical Chemistry Chemical Physics: PCCP
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