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https://www.readbyqxmd.com/read/27913774/gravity-flow-in-proposed-enteral-tube-small-bore-connectors
#1
Ryan T Hurt, Lisa M Epp, Adele K Pattinson, Wanda M Duellman, Stephen M Corner, Manpreet S Mundi
BACKGROUND: Enteral nutrition (EN) misconnections have been identified as a serious and potential deadly problem. An international effort led by EN industry leaders has developed a small-bore enteral connector (ENFit) that in theory will reduce the frequency of misconnections. Despite the potential benefit of preventing misconnections, the full impact of adoption of the ENFit connector is unknown. To assess the impact of transitioning to ENFit on our home EN (HEN) patients, the current study evaluated gravity feeding comparing 2 proposed small-bore connectors to the legacy (current connector) using various commercial formulas...
December 2, 2016: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/27910634/the-upgrade-of-the-thomson-scattering-system-for-measurement-on-the-c-2-c-2u-devices
#2
K Zhai, T Schindler, J Kinley, B Deng, M C Thompson
The C-2/C-2U Thomson scattering system has been substantially upgraded during the latter phase of C-2/C-2U program. A Rayleigh channel has been added to each of the three polychromators of the C-2/C-2U Thomson scattering system. Onsite spectral calibration has been applied to avoid the issue of different channel responses at different spots on the photomultiplier tube surface. With the added Rayleigh channel, the absolute intensity response of the system is calibrated with Rayleigh scattering in argon gas from 0...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910598/analogue-saturation-limit-of-single-and-double-10-mm-microchannel-plate-photomultiplier-tubes
#3
J S Milnes, T M Conneely, C J Horsfield
Photek are a well-established supplier of microchannel plate (MCP) photomultiplier tubes (PMTs) to the inertial confinement fusion community. The analogue signals produced at the major inertial confinement fusion facilities cover many orders of magnitude, therefore understanding the upper saturation limit of MCP-PMTs to large low rate signals takes on a high importance. Here we present a study of a single and a double MCP-PMT with 10 mm diameter active area. The saturation was studied for a range of optical pulse widths from 4 ns to 100 ns and at a range of electron gain values: 10(3) to 10(4) for the single and 10(4) to 10(6) for the double...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910581/spectral-survey-of-helium-lines-in-a-linear-plasma-device-for-use-in-helios-imaging
#4
H B Ray, T M Biewer, D T Fehling, R C Isler, E A Unterberg
Fast visible cameras and a filterscope are used to examine the visible light emission from Oak Ridge National Laboratory's Proto-MPEX. The filterscope has been configured to perform helium line ratio measurements using emission lines at 667.9, 728.1, and 706.5 nm. The measured lines should be mathematically inverted and the ratios compared to a collisional radiative model (CRM) to determine Te and ne. Increasing the number of measurement chords through the plasma improves the inversion calculation and subsequent Te and ne localization...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910559/multi-energy-x-ray-detector-calibration-for-t-and-impurity-density-n-measurements-of-mcf-plasmas
#5
J Maddox, N Pablant, P Efthimion, L Delgado-Aparicio, K W Hill, M Bitter, M L Reinke, M Rissi, T Donath, B Luethi, B Stratton
Soft x-ray detection with the new "multi-energy" PILATUS3 detector systems holds promise as a magnetically confined fusion (MCF) plasma diagnostic for ITER and beyond. The measured x-ray brightness can be used to determine impurity concentrations, electron temperatures, ne(2)Zeff products, and to probe the electron energy distribution. However, in order to be effective, these detectors which are really large arrays of detectors with photon energy gating capabilities must be precisely calibrated for each pixel...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910549/developments-of-scintillator-based-soft-x-ray-diagnostic-in-lhd-with-csi-tl-and-p47-scintillators
#6
T Bando, S Ohdachi, Y Suzuki
Multi-channel soft x-ray (SX) diagnostic has been used in the large helical device (LHD) to research magnetohydrodynamic equilibria and activities. However, in the coming deuterium plasma experiments of LHD, it will be difficult to use semiconductor systems near LHD. Therefore, a new type of SX diagnostic, a scintillator-based type diagnostic, has been investigated in order to avoid damage from the radiation. A fiber optic plate coated by P47 scintillator will be used to detect SX emission. Scintillation light will be transferred by pure silica core optical fibers and detected by photomultiplier tubes...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910486/a-high-spatio-temporal-resolution-optical-pyrometer-at-the-orion-laser-facility
#7
Emma Floyd, Edward T Gumbrell, Jim Fyrth, James D Luis, Jonathan W Skidmore, Siddharth Patankar, Samuel Giltrap, Roland Smith
A streaked pyrometer has been designed to measure the temperature of ≈100 μm diameter heated targets in the warm dense matter region. The diagnostic has picosecond time resolution. Spatial resolution is limited by the streak camera to 4 μm in one dimension; the imaging system has superior resolution of 1 μm. High light collection efficiency means that the diagnostic can transmit a measurable quantity of thermal emission at temperatures as low as 1 eV to the detector. This is achieved through the use of an f/1...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910405/high-dynamic-range-neutron-time-of-flight-detector-used-to-infer-the-d-t-n-4-he-and-d-d-n-3-he-reaction-yield-and-ion-temperature-on-omega
#8
C J Forrest, V Yu Glebov, V N Goncharov, J P Knauer, P B Radha, S P Regan, M H Romanofsky, T C Sangster, M J Shoup, C Stoeckl
Upgraded microchannel-plate-based photomultiplier tubes (MCP-PMT's) with increased stability to signal-shape linearity have been implemented on the 13.4-m neutron time-of-flight (nTOF) detector at the Omega Laser Facility. This diagnostic uses oxygenated xylene doped with diphenyloxazole C15H11NO + p-bis-(o-methylstyryl)-benzene (PPO + bis-MSB) wavelength shifting dyes and is coupled through four viewing ports to fast-gating MCP-PMT's, each with a different gain to allow one to measure the light output over a dynamic range of 1 × 10(6)...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910331/next-generation-gamma-ray-cherenkov-detectors-for-the-national-ignition-facility
#9
H W Herrmann, Y H Kim, A M McEvoy, A B Zylstra, C S Young, F E Lopez, J R Griego, V E Fatherley, J A Oertel, W Stoeffl, H Khater, J E Hernandez, A Carpenter, M S Rubery, C J Horsfield, S Gales, A Leatherland, T Hilsabeck, J D Kilkenny, R M Malone, J D Hares, J Milnes, W T Shmayda, C Stoeckl, S H Batha
The newest generation of Gas Cherenkov Detector (GCD-3) employed in Inertial Confinement Fusion experiments at the Omega Laser Facility has provided improved performance over previous generations. Comparison of reaction histories measured using two different deuterium-tritium fusion products, namely gamma rays using GCD and neutrons using Neutron Temporal Diagnostic (NTD), have provided added credibility to both techniques. GCD-3 is now being brought to the National Ignition Facility (NIF) to supplement the existing Gamma Reaction History (GRH-6m) located 6 m from target chamber center (TCC)...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910106/identification-of-semiochemicals-attractive-to-simulium-vittatum-is-7
#10
G G Verocai, T W McGAHA, J P Iburg, C R Katholi, E W Cupp, R Noblet, T R Unnasch
Many blackfly species (Diptera: Simuliidae) are economically important insect pests, both as nuisance biters and as vectors of pathogens of medical and veterinary relevance. Among the important blackfly pest species in North America is Simulium vittatum Zetterstedt sensu lato. The objective of this study was to identify compounds excreted by mammalian hosts that are attractive to host-seeking S. vittatum females. The attractiveness of putative compounds to colonized S. vittatum was tested through electrophysiological (electroantennography; n = 58 compounds) and behavioural (Y-tube assays; n = 7 compounds in three concentrations) bioassays...
December 2, 2016: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/27908147/strategies-for-ct-tissue-segmentation-for-monte-carlo-calculations-in-nuclear-medicine-dosimetry
#11
P E N Braad, T Andersen, S B Hansen, P F Høilund-Carlsen
PURPOSE: CT images are used for patient specific Monte Carlo treatment planning in radionuclide therapy. The authors investigated the impact of tissue classification, CT image segmentation, and CT errors on Monte Carlo calculated absorbed dose estimates in nuclear medicine. METHODS: CT errors as a function of patient size, CT reconstruction, and tube current modulation methods were assessed in a phantom experiment on a clinical CT system. The impact of tissue segmentation methods and CT number variations on EGSnrc Monte Carlo calculated absorbed dose distributions was assessed for (99m)Tc and (131)I in the ICRP/ICRU male phantom and in a patient PET/CT-scanned with (124)I prior to radioiodine therapy...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27906977/development-of-a-pcr-assay-to-detect-low-level-trypanosoma-cruzi-in-blood-specimens-collected-with-paxgene-blood-dna-tubes-for-clinical-trials-treating-chagas-disease
#12
Bo Wei, Lei Chen, Miho Kibukawa, John Kang, Hetty Waskin, Matthew Marton
Chagas disease is caused by the parasitic infection of Trypanosoma cruzi (T. cruzi). The STOP CHAGAS clinical trial was initiated in 2011 to evaluate posaconazole in treating Chagas disease, with treatment success defined as negative qualitative PCR results of detecting the parasites in blood specimens collected post-treatment. PAXgene Blood DNA tubes were utilized as a simple procedure to collect and process blood specimens. However, the PAXgene blood specimens challenged published T. cruzi PCR methods, resulting in poor sensitivity and reproducibility...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27906363/construction-of-the-optical-part-of-a-time-of-flight-detector-prototype-for-the-afp-detector
#13
L Nozka, L Adamczyk, G Avoni, A Brandt, P Buglewicz, E Cavallaro, G Chiodini, L Chytka, K Ciesla, P M Davis, M Dyndal, S Grinstein, P Hamal, M Hrabovsky, K Janas, K Jirakova, M Kocian, T Komarek, K Korcyl, J Lange, D Mandat, V Michalek, I Lopez Paz, D Northacker, M Rijssenbeek, L Seabra, P Schovanek, R Staszewski, P Swierska, T Sykora
We present the construction of the optical part of the ToF (time-of-flight) subdetector prototype for the AFP (ATLAS Forward Proton) detector. The ToF detector in conjunction with a 3D silicon pixel tracker will tag and measure protons originating in central exclusive interactions p + p → p + X + p, where the two outgoing protons are scattered in the very forward directions. The ToF is required to reduce so-called pileup backgrounds that arise from multiple proton interactions in the same bunch crossing at high luminosity...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27902614/associating-pancreaticostomy-and-biliary-irrigation-for-staged-pancreaticoduodenectomy-approach-to-pancreatic-intraductal-papillary-mucinous-neoplasm-with-recurrent-cholangitis-and-severe-jaundice-a-case-report
#14
Chao Dai, Siyuan Lou, Fan Zhou
PATIENT CONCERNS: A 63-year-old man was hospitalized with history of abdominal pain since more than 1 year, and that of fever with chills since 2 weeks. DIAGNOSES: Based on the laboratory investigations and radiologic findings, a preliminary diagnosis of pancreatic intraductal papillary mucinous neoplasm (IPMN) with recurrent cholangitis and severe jaundice was made. INTERVENTIONS: An initial attempt at endoscopic and image-guided drainage proved unsuccessful...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27900992/improved-intermittent-clamped-drainage-in-lower-lumbar-internal-fixation-a-randomized-prospective-study
#15
Qing-Ying Hao, Chu-Yin Liu, Chan-Juan Fu, Xiao-Hua Zhang, Ming-Sheng Tan
BACKGROUND: Continuous negative pressure drainage (CNPD) is widely used after lower lumbar internal fixation; however, it may cause tremendous blood loss and lead to postoperative hemorrhagic anemia. The present study explored the efficacy and safety of improved intermittent-clamped drainage (ICD) for lower lumbar internal fixation. METHODS: This was a prospective study that included 156 patients with decompression of the spinal canal and internal fixation for the first time from January 2012 to December 2014...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27900396/-persistent-mullerian-duct-syndrome-rare-incidental-finding-during-treatment-of-pediatric-inguinal-hernia
#16
P Sperling, T Meyer
BACKGROUND: Persistent mullerian duct syndrome (PMDS) is a rare, autosomal recessive disorder. It is a form of male disorder of sexual differentiation in which mullerian duct structures are present in male phenotypes and 46XY karyotypes. In affected individuals, uterus, fallopian tubes, cervix and vagina are present. METHODS: A 2-month-old boy was admitted to hospital with a right-sided inguinal hernia. The physical examination showed a phenotypically normal boy with a right sided indirect inguinal hernia and impalpable testis...
November 29, 2016: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/27899163/human-fetal-and-adult-epicardial-derived-cells-a-novel-model-to-study-their-activation
#17
Asja T Moerkamp, Kirsten Lodder, Tessa van Herwaarden, Esther Dronkers, Calinda K E Dingenouts, Fredrik C Tengström, Thomas J van Brakel, Marie-José Goumans, Anke M Smits
BACKGROUND: The epicardium, a cell layer covering the heart, plays an important role during cardiogenesis providing cardiovascular cell types and instructive signals, but becomes quiescent during adulthood. Upon cardiac injury the epicardium is activated, which includes induction of a developmental gene program, epithelial-to-mesenchymal transition (EMT) and migration. However, the response of the adult epicardium is suboptimal compared to the active contribution of the fetal epicardium to heart development...
November 29, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27898951/intrauterine-growth-restricted-piglets-have-similar-gastric-emptying-rates-but-lower-rectal-temperatures-and-altered-blood-values-when-compared-with-normal-weight-piglets-at-birth
#18
C Amdi, M V Klarlund, J Hales, T Thymann, C F Hansen
Intrauterine growth-restricted (IUGR) piglets have lower survival rates and are more likely to have empty stomachs 24 h after birth than normal piglets. Although hypoglycemia may result from low colostrum intake per se, it is not known if slow gastric emptying may be an additional risk factor for poor immunization and glucose absorption in IUGR piglets. It is estimated that IUGR piglets consume less colostrum per kilogram BW than normal-weight piglets within the first 24 h, which could be due to a slower gastric emptying rate and a compromised energy metabolism...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898521/pathogenesis-and-heterogeneity-of-ovarian-cancer
#19
Paul T Kroeger, Ronny Drapkin
PURPOSE OF REVIEW: The most common type of ovarian cancer, high-grade serous ovarian carcinoma (HGSOC), was originally thought to develop from the ovarian surface epithelium. However, recent data suggest that the cells that undergo neoplastic transformation and give rise to the majority of HGSOC are from the fallopian tube. This development has impacted both translational research and clinical practice, revealing new opportunities for early detection, prevention, and treatment of ovarian cancer...
November 26, 2016: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27896154/use-of-t-tube-enterostomy-in-neonatal-gastro-intestinal-surgery
#20
Maher Al-Zaiem, Abdulhai F Al-Garni, Abdulrahman Al-Maghrebi, Asim A Asghar
Aim: To evaluate the results of the use of the T-tube ileostomy in neonatal intestinal surgery cases. Materials and Methods: A retrospective review of sixty two neonates underwent intestinal obstruction surgery by using T-tube ileostomy was conducted between January 1990 and January 2013.The pathologies of the intestinal obstruction were; thirty four of jejunoileal atresia cases, thirteen case meconium ileus, eight cases perforated necrotizing enterocolitis (NEC), three cases meconium peritonitis, three cases with bowel resection due to intestinal volvulus, and one case of gastroschisis...
October 2016: Journal of Neonatal Surgery
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