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https://www.readbyqxmd.com/read/28092626/the-impact-of-surface-geometry-cavitation-and-condensation-on-wetting-transitions-posts-and-reentrant-structures
#1
J R Panter, H Kusumaatmaja
The fundamental impacts of surface geometry on the stability of wetting states, and the transitions between them are elucidated for square posts and reentrant structures in three dimensions. We identify three principal outcomes of particular importance for future surface design of liquid-repellent surfaces. Firstly, we demonstrate and quantify how capillary condensation and vapour cavitation affect wetting state stabilities. At high contact angles, cavitation is enhanced about wide, closely-spaced square posts, leading to the existence of suspended states without an associated collapsed state...
January 16, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28092313/surgical-management-of-tractional-retinoschisis-associated-with-vitreous-hemorrhage-in-retinopathy-of-prematurity
#2
Bozho Todorich, Aristomenis Thanos, Yoshihiro Yonekawa, Edward Korot, Michael T Trese, Kimberly A Drenser, Antonio Capone
PURPOSE: The tractional retinoschisis is a poorly understood, rare, and likely underappreciated entity in retinopathy of prematurity. The purpose of this article is to describe clinical findings and surgical management of tractional retinoschisis in retinopathy of prematurity, masquerading as Stage 4 retinopathy of prematurity retinal detachment. METHODS: A retrospective review of a single case with literature review and case discussion. RESULTS: In this report, we describe a child with retinopathy of prematurity and tractional schisis, who initially presented with vitreous hemorrhage and was effectively managed by vitrectomy and inner wall retinectomy...
January 13, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28090187/recurrent-intestinal-obstruction-in-a-patient-with-selective-iga-deficiency
#3
Chee-Kin Hui
A 32 year old woman presented with acute onset of abdominal pain and fever. An urgent computerised tomography (CT) of the whole abdomen showed dilated loop at the terminal ileum in the right lower abdomen with thickening of the wall and oedema. The CT was suggestive of distal small bowel obstruction at the ileum with surrounding wall oedema. Multiple biopsies taken from the terminal ileum and colon on colonoscopy were all unremarkable. She represented one-year later with a recurrence of intestinal obstruction...
November 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28090085/prediction-and-real-time-compensation-of-qubit-decoherence-via-machine-learning
#4
Sandeep Mavadia, Virginia Frey, Jarrah Sastrawan, Stephen Dona, Michael J Biercuk
The wide-ranging adoption of quantum technologies requires practical, high-performance advances in our ability to maintain quantum coherence while facing the challenge of state collapse under measurement. Here we use techniques from control theory and machine learning to predict the future evolution of a qubit's state; we deploy this information to suppress stochastic, semiclassical decoherence, even when access to measurements is limited. First, we implement a time-division multiplexed approach, interleaving measurement periods with periods of unsupervised but stabilised operation during which qubits are available, for example, in quantum information experiments...
January 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28090072/reconsideration-of-inferior-vena-cava-parameters-for-estimating-right-atrial-pressure-in-an-east-asian-population%C3%A3-comparative-simultaneous-ultrasound-catheterization-study
#5
Takayuki Kawata, Masao Daimon, Seitetsu L Lee, Koichi Kimura, Naoko Sawada, Shuo-Ju Chiang, Keitaro Mahara, Takeshi Okubo, Tomoko Nakao, Megumi Hirokawa, Boqing Xu, Tomoko S Kato, Masafumi Watanabe, Yutaka Yatomi, Issei Komuro
BACKGROUND: Ultrasound measurements of the inferior vena cava (IVC) diameter (IVCD), together with its respiratory variation, provide a noninvasive estimate of right atrial pressure (RAP). However, there is a paucity of studies that have compared this technique with simultaneous catheterization. We explored the best cut-off values of IVC parameters for elevated RAP in comparison with RAP measured by catheterization.Methods and Results:We prospectively enrolled 120 East Asian patients who were scheduled for catheterization...
January 13, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28089785/mechanistic-modelling-of-infrared-mediated-energy-transfer-during-the-primary-drying-step-of-a-continuous-freeze-drying-process
#6
Pieter-Jan Van Bockstal, Séverine Thérèse F C Mortier, Laurens De Meyer, Jos Corver, Chris Vervaet, Ingmar Nopens, Thomas De Beer
Conventional pharmaceutical freeze-drying is an inefficient and expensive batch-wise process, associated with several disadvantages leading to an uncontrolled end product variability. The proposed continuous alternative, based on spinning the vials during freezing and on optimal energy supply during drying, strongly increases process efficiency and improves product quality (uniformity). The heat transfer during continuous drying of the spin frozen vials is provided via non-contact infrared (IR) radiation. The energy transfer to the spin frozen vials should be optimised to maximise the drying efficiency while avoiding cake collapse...
January 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28087839/understanding-the-property-activity-relationships-of-polyhedral-cuprous-oxide-nanocrystals-in-terms-of-reactive-crystallographic-facets
#7
Yanlin Feng, Yun Chang, Xiujuan Sun, Ning Liu, Yan Cheng, Yuqing Feng, Haiyuan Zhang, Xi Li
The property-activity relationship is usually established to understand the toxicity mechanism of nanomaterials. In the present study, different morphological Cu2O nanocrystals, octahedrons, truncated octahedrons, cuboctahedrons, and cubes, were synthesized to precisely tuning the {100} and {111} facet percentages in purpose of systematically investigating the toxicity role of crystallographic facets in BEAS-2B and RAW 264.7 cells. It was found that the toxicity of polyhedral Cu2O nanocrystals was highly dependent on the exposed {100} surface after short-term exposure because {100} facets could produce more reactive oxygen species (ROS) than {111} facets, however, after long-term exposure, their toxicity showed again the correlation with total surface property because toxic copper ions were largely released from the whole nanocrystal surface irrespective of {100} or {111} facet and this copper dissolution caused the collapse of surface crystals and the vanishing of ROS...
January 13, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28086849/successful-outcome-following-pneumonectomy-in-a-teenage-boy-with-cystic-fibrosis-a-case-report
#8
Zheyi Liew, Santosh Mallikarjuna, Asif Hasan, F Kate Gould, Su Bunn, Matthew F Thomas, Jim L Lordan, Christopher O'Brien, Malcolm Brodlie
BACKGROUND: Cystic fibrosis lung disease is generally a diffuse process however rarely one lung may become particularly damaged through chronic collapse and consolidation resulting in end-stage bronchiectasis with relative sparing of the contralateral lung. This clinical situation is sometimes referred to as "destroyed lung". Lung resection surgery is seldom indicated in cystic fibrosis and the associated medical literature is relatively sparse. CASE PRESENTATION: A 14 year old boy was referred to our centre for lung transplantation assessment...
January 13, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28079972/prevalence-of-vomiting-in-dogs-with-pericardial-effusion
#9
Rachel Fahey, Elizabeth Rozanski, April Paul, John E Rush
BACKGROUND: Pericardial effusion (PE) is common in dogs. Clinical signs may be vague until cardiac tamponade and associated cardiovascular decompensation develops. Vomiting has previously been identified in some dogs, but the actual prevalence of vomiting in dogs with PE is unknown. The purpose of this study is to report the prevalence of vomiting associated with PE, and to determine if vomiting is associated with the underlying cause of effusion, presenting plasma lactate concentration, or volume of PE removed...
January 12, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28079607/mapping-regional-differences-of-local-pressure-volume-curves-with-electrical-impedance-tomography
#10
Alessandro Beda, Alysson R Carvalho, Nadja C Carvalho, Sören Hammermüller, Marcelo B P Amato, Thomas Muders, Claudia Gittel, Katharina Noreikat, Hermann Wrigge, Andreas W Reske
OBJECTIVES: Lung-protective mechanical ventilation aims to prevent alveolar collapse and overdistension, but reliable bedside methods to quantify them are lacking. We propose a quantitative descriptor of the shape of local pressure-volume curves derived from electrical impedance tomography, for computing maps that highlight the presence and location of regions of presumed tidal recruitment (i.e., elastance decrease during inflation, pressure-volume curve with upward curvature) or overdistension (i...
January 10, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28079197/temperature-responsive-lipid-liquid-crystal-layers-with-embedded-nanogels
#11
A P Dabkowska, C Hirst, M Valldeperas, L A Clifton, C Montis, S Nöjd, L Gentile, M Wang, G K Pálsson, S Lages, D Berti, J Barauskas, T Nylander
Polymer nanogels are embedded within layers consisting of a nonlamellar liquid crystalline lipid phase to act as thermoresponsive controllers of layer compactness and hydration. As the nanogels change from the swollen to the collapsed state via a temperature trigger, they enable on-demand release of water from the mixed polymer-lipid layer while the lipid matrix remains intact. Combining stimuli-responsive polymers with responsive lipid-based mesophase systems opens up new routes in biomedical applications such as functional biomaterials, bioanalysis and drug delivery...
January 12, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28078627/nanostructured-materials-synthesis-using-ultrasound
#12
REVIEW
Jordan J Hinman, Kenneth S Suslick
Recent applications of ultrasound to the production of nanostructured materials are reviewed. Sonochemistry permits the production of novel materials or provides a route to known materials without the need for high bulk temperatures, pressures, or long reaction times. Both chemical and physical phenomena associated with high-intensity ultrasound are responsible for the production or modification of nanomaterials. Most notable are the consequences of acoustic cavitation: the formation, growth, and implosive collapse of bubbles, and can be categorized as primary sonochemistry (gas-phase chemistry occurring inside collapsing bubbles), secondary sonochemistry (solution-phase chemistry occurring outside the bubbles), and physical modifications (caused by high-speed jets, shockwaves, or inter-particle collisions in slurries)...
February 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28076957/collapse-precedes-folding-in-denaturant-dependent-assembly-of-ubiquitin
#13
Govardhan Reddy, Dave Thirumalai
The folding of small protein Ubiquitin (Ub), which plays an indispensable role in targeting proteins for degradation and DNA damage response is complex. A number of experiments on Ub folding have reached differing conclusions regarding the relation between collapse and folding, and whether intermediates are populated. In order to resolve these vexing issues, we elucidate the denaturant-dependent thermodynamics and kinetics of Ub folding at low and neutral pH as a function of Guanidinium chloride and Urea using coarse-grained molecular simulations...
January 11, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28075496/effect-of-dorsal-laminectomy-and-dorsal-annulectomy-with-partial-lumbosacral-discectomy-on-the-volume-of-the-lateral-intervertebral-neuroforamina-in-dogs-when-the-lumbosacral-junction-is-extended
#14
Andrew J Worth, Angela Hartman, Janis P Bridges, Boyd R Jones, Joe I G Mayhew
OBJECTIVE: To determine the effect of dorsal annulectomy and partial discectomy on the volume of the lumbosacral lateral intervertebral neurovascular foramina (intervertebral foramina) in canine cadavers during extension of the lumbosacral junction. STUDY DESIGN: Ex vivo experiment. SAMPLE POPULATION: Lumbosacral specimens from 10 large breed dogs euthanatized for reasons unrelated to lumbosacral disease. METHODS: The lumbosacral specimens were clamped in a wooden jig and scanned using computed tomography (CT) with the lumbosacral junction in a neutral position and loaded in extension using a tensioning device...
January 11, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28075347/sdtcp-towards-datacenter-tcp-congestion-control-with-sdn-for-iot-applications
#15
Yifei Lu, Zhen Ling, Shuhong Zhu, Ling Tang
The Internet of Things (IoT) has gained popularity in recent years. Today's IoT applications are now increasingly deployed in cloud platforms to perform Big Data analytics. In cloud data center networks (DCN), TCP incast usually happens when multiple senders simultaneously communicate with a single receiver. However, when TCP incast happens, DCN may suffer from both throughput collapse for TCP burst flows and temporary starvation for TCP background flows. In this paper, we propose a software defined network (SDN)-based TCP congestion control mechanism, referred to as SDTCP, to leverage the features, e...
January 8, 2017: Sensors
https://www.readbyqxmd.com/read/28075134/dynamic-optical-switching-of-polymer-plasmonic-nanoparticle-hybrids-with-sparse-loading
#16
Zhaoxia Qian, Kathryn N Guye, David J Masiello, David S Ginger
Responsive plasmonic nanomaterials composed of gold nanoparticles (AuNPs) and temperature-responsive poly(N-isopropylacrylamide) (PNIPAM) hydrogels offer the promise of designing smart materials that can change color in response to varying thermal, or photothermal stimuli. Typical AuNP/PNIPAM hybrids are heavily loaded with AuNPs. Here we demonstrate that PNIPAM spheres with small number AuNP loadings exhibit significant extinction shifts and a broad range of color changes with varying temperature. Hybrids with an average loading of 3 to 5 AuNPs per PNIPAM sphere exhibit peak extinction shifts of over 150 nm and color change from red to purple to gray, with very large extinction changes in the NIR, as the temperature increases from 25oC to 50oC...
January 11, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28074855/mir-218-targets-mecp2-and-inhibits-heroin-seeking-behavior
#17
Biao Yan, Zhaoyang Hu, Wenqing Yao, Qiumin Le, Bo Xu, Xing Liu, Lan Ma
MicroRNAs (miRNAs) are a class of evolutionarily conserved, 18-25 nucleotide non-coding sequences that post-transcriptionally regulate gene expression. Recent studies implicated their roles in the regulation of neuronal functions, such as learning, cognition and memory formation. Here we report that miR-218 inhibits heroin-induced behavioral plasticity. First, network propagation-based method was used to predict candidate miRNAs that played potential key roles in regulating drug addiction-related genes. Microarray screening was also carried out to identify miRNAs responding to chronic heroin administration in the nucleus accumbens (NAc)...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074723/-a-woman-with-excessive-dynamic-airway-collapse
#18
R L T N Salden, S Postma
BACKGROUND: 'Excessive dynamic airway collapse' (EDAC) is a form of tracheamalacia, that does not affect the rings of cartilage on the anterior side of the trachea, but in which the posterior wall of the trachea collapses during inspiration and expiration. CASE DESCRIPTION: An 80 year-old woman presented to the accident and emergency department with dyspnoea and severe inspiratory and expiratory stridor, with sudden onset a few hours previously. Following a series of investigations, she was shown to have a narrowing of the trachea, radiating from the posterior wall...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28073758/resolution-and-reconciliation-of-non-binary-gene-trees-with-transfers-duplications-and-losses
#19
Edwin Jacox, Mathias Weller, Eric Tannier, Celine Scornavacca
: Gene trees reconstructed from sequence alignments contain poorly supported branches when the phylogenetic signal in the sequences is insufficient to determine them all. When a species tree is available, the signal of gains and losses of genes can be used to correctly resolve the unsupported parts of the gene history. However finding a most parsimonious binary resolution of a non-binary tree obtained by contracting the unsupported branches is NP-hard if transfer events are considered as possible gene scale events, in addition to gene origination, duplication and loss...
January 10, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28073560/an-alternative-explanation-for-cyanobacterial-scum-formation-and-persistence-by-oxygenic-photosynthesis
#20
E Aparicio Medrano, R E Uittenbogaard, B J H van de Wiel, L M Dionisio Pires, H J H Clercx
The cause of persistent cyanobacteria scum formation in lakes is an unresolved subject. Scum refers to the event in which cyanobacteria are at the water surface of a lake. Factors like low turbulence levels, long day-light, high water temperatures and the buoyant capacity of cyanobacterial cells play a role in the occurrence of scums. However, they do not explain why scums are observed at periods during the day when according to theory they should have disappeared into the deeper water layers. In this study, we present an alternative explanation...
December 2016: Harmful Algae
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