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https://www.readbyqxmd.com/read/27915385/substantial-variation-among-hernia-experts-in-the-decision-for-treatment-of-patients-with-incisional-hernia-a-descriptive-study-on-agreement
#1
D Kokotovic, I Gögenur, F Helgstrand
PURPOSE: Benign elective procedures give rise to heterogeneity in indication for surgery and surgical technique among specialized surgeons in a variety of surgical fields. The objective was to analyze the extent of agreement in surgical management among expert hernia surgeons when evaluating the same patient in a standardized setting. METHODS: Five Danish hernia experts answered questions concerning indication for surgery and surgical technique for 25 video recorded real-life clinical cases...
December 3, 2016: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/27915157/double-injection-single-detection-asymmetric-flow-injection-manifold-for-spectrophotometric-determination-of-ascorbic-acid-and-uric-acid-selection-the-optimal-conditions-by-mcdm-approach-based-on-different-criteria-weighting-methods
#2
Samira Boroumand, Mansour Arab Chamjangali, Ghadamali Bagherian
A simple and sensitive double injection/single detector flow injection analysis (FIA) method is proposed for the simultaneous kinetic determination of ascorbic acid (AA) and uric acid (UA). This method is based upon the difference between the rates of the AA and UA reactions with Fe(3+) in the presence of 1, 10-phenanthroline (phen). The absorbance of Fe(2+)/1, 10-phenanthroline (Fe-phen) complex obtained as the product was measured spectrophotometrically at 510nm. To reach a good accuracy in the differential kinetic determination via the mathematical manipulations of the transient signals, different criteria were considered in the selection of the optimum conditions...
November 20, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/27915150/effect-of-environmental-salinity-manipulation-on-uptake-rates-and-distribution-patterns-of-waterborne-amino-acids-in-the-pacific-hagfish
#3
Chris N Glover, Tamzin A Blewett, Chris M Wood
Among vertebrates, hagfish are the only known iono- and osmoconformers, and the only species thus far documented to absorb amino acids directly across the skin. In the current study, short-term (6h) manipulations of exposure salinities (75-125% seawater) were conducted to determine whether changes in osmotic demands influenced the uptake and tissue distribution of waterborne amino acids (alanine, glycine and phenylalanine), in the Pacific hagfish, Eptatretus stoutii. No changes in erythrocyte or muscle amino acid accumulation rates were noted, but the patterns of plasma amino acid accumulation were suggestive of regulation...
November 30, 2016: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27915099/foliar-heavy-metal-uptake-toxicity-and-detoxification-in-plants-a-comparison-of-foliar-and-root-metal-uptake
#4
REVIEW
Muhammad Shahid, Camille Dumat, Sana Khalid, Eva Schreck, Tiantian Xiong, Nabeel Khan Niazi
Anthropologic activities have transformed global biogeochemical cycling of heavy metals by emitting considerable quantities of these metals into the atmosphere from diverse sources. In spite of substantial and progressive developments in industrial processes and techniques to reduce environmental emissions, atmospheric contamination by toxic heavy metals and associated ecological and health risks are still newsworthy. Atmospheric heavy metals may be absorbed via foliar organs of plants after wet or dry deposition of atmospheric fallouts on plant canopy...
November 24, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27914781/incident-air-kerma-to-absorbed-organ-dose-conversion-factors-for-breast-and-lung-in-pa-thorax-radiography-the-effect-of-patient-thickness-and-radiation-quality
#5
A Kelaranta, P Toroi, P Vock
PURPOSE: Converting the measurable quantities to patient organ doses in projection radiography is usually based on a standard-sized patient model and a specific radiation quality, which are likely to differ from the real situation. Large inaccuracies can therefore be obtained in organ doses, because organ doses are dependent on the exposure parameters, exposure geometry and patient anatomy. In this study, the effect of radiation quality and patient thickness on the organ dose conversion factors were determined...
November 30, 2016: Physica Medica: PM
https://www.readbyqxmd.com/read/27914775/assessment-of-background-gamma-radiation-levels-using-airborne-gamma-ray-spectrometer-data-over-uranium-deposits-cuddapah-basin-india-a-comparative-study-of-dose-rates-estimated-by-agrs-and-pgrs
#6
D Srinivas, V Ramesh Babu, I Patra, Shailesh Tripathi, M S Ramayya, A K Chaturvedi
The Atomic Minerals Directorate for Exploration and Research (AMD) has conducted high-resolution airborne gamma ray spectrometer (AGRS), magnetometer and time domain electromagnetic (TDEM) surveys for uranium exploration, along the northern margins of Cuddapah Basin. The survey area includes well known uranium deposits such as Lambapur-Peddagattu, Chitrial and Koppunuru. The AGRS data collected for uranium exploration is utilised for estimating the average absorbed rates in air due to radio-elemental (potassium in %, uranium and thorium in ppm) distribution over these known deposit areas...
November 30, 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27914585/bladder-augmentation-in-anuric-defunctioned-microbladders-and-a-novel-antireflux-mechanism-for-mitrofanoff-anastomosis-to-the-ileal-patch
#7
Joana Lopes, Andy Robb, Liam McCarthy
BACKGROUND/PURPOSE: Reconstruction of microbladders is a difficult surgical challenge: How can a neobladder be recreated when >90% of the new bladder is augmented patch, and how can a Mitrofanoff conduit be anastomosed when the native bladder is so tiny? This series describes microbladders secondary to anuria and/or diversion that required augmentation. This was done using a de-tubularized ileal segment, and because of the small size of the native bladder, Mitrofanoff anastomosis was performed to the bowel patch (using a novel "Keel Procedure")...
November 13, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27914582/photochemistry-of-nanoporous-carbons-perspectives-in-energy-conversion-and-environmental-remediation
#8
REVIEW
Alicia Gomis-Berenguer, Leticia F Velasco, Inmaculada Velo-Gala, Conchi O Ania
The interest in the use of nanoporous carbon materials in applications related to energy conversion and storage, either as catalysts or additives, has grown over recent decades in various disciplines. Since the early studies reporting the benefits of the use of nanoporous carbons as inert supports of semiconductors and as electron acceptors that enhance the splitting of the photogenerated excitons, many researchers have investigated the key role of carbon matrices coupled to all types of photoactive materials...
November 16, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914439/design-of-broadband-time-domain-impedance-boundary-conditions-using-the-oscillatory-diffusive-representation-of-acoustical-models
#9
Florian Monteghetti, Denis Matignon, Estelle Piot, Lucas Pascal
A methodology to design broadband time-domain impedance boundary conditions (TDIBCs) from the analysis of acoustical models is presented. The derived TDIBCs are recast exclusively as first-order differential equations, well-suited for high-order numerical simulations. Broadband approximations are yielded from an elementary linear least squares optimization that is, for most models, independent of the absorbing material geometry. This methodology relies on a mathematical technique referred to as the oscillatory-diffusive (or poles and cuts) representation, and is applied to a wide range of acoustical models, drawn from duct acoustics and outdoor sound propagation, which covers perforates, semi-infinite ground layers, as well as cavities filled with a porous medium...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914419/multi-objective-optimization-of-acoustic-black-hole-vibration-absorbers
#10
Micah R Shepherd, Philip A Feurtado, Stephen C Conlon
Structures with power law tapers exhibit the acoustic black hole (ABH) effect and can be used for vibration reduction. However, the design of ABHs for vibration reduction requires consideration of the underlying theory and its regions of validity. To address the competing nature of the best ABH design for vibration reduction and the underlying theoretical assumptions, a multi-objective approach is used to find the lowest frequency where both criteria are sufficiently met. The Pareto optimality curve is estimated for a range of ABH design parameters...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914397/predicting-the-sabine-absorption-coefficients-of-fibrous-absorbers-for-various-air-backing-conditions-with-a-frequency-dependent-diffuseness-correction
#11
Cheol-Ho Jeong
Fibrous absorbers can be installed with various air backing conditions to fulfil a given low frequency acoustic requirement. Since absorber manufacturers cannot provide the absorption coefficients for all possible mounting conditions, acousticians have difficulties knowing the absorption characteristics of their own configurations. This study aims to predict the absorption coefficient for various mounting conditions from a single measurement of an arbitrary mounting condition by extracting the air flow resistivity of the test specimen and the frequency-dependent effect of the chamber on the measured absorption coefficients...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914102/examining-temporal-effects-on-cancer-risk-in-the-international-nuclear-workers-study-inworks
#12
Robert D Daniels, Stephen J Bertke, David B Richardson, Elisabeth Cardis, Michael Gillies, Jacqueline A O'Hagan, Richard Haylock, Dominique Laurier, Klervi Leuraud, Monika Moissonnier, Isabelle Thierry-Chef, Ausrele Kesminiene, Mary K Schubauer-Berigan
The paper continues the series of publications from the International Nuclear Workers Study cohort (INWORKS) that comprises 308,297 workers from France, the United Kingdom and the United States, providing 8.2 million person-years of observation from a combined follow-up period (at earliest 1944 to at latest 2005). These workers' external radiation exposures were primarily to photons, resulting in an estimated average career absorbed dose to the colon of 17.4 milligray. The association between cumulative ionizing radiation dose and cancer mortality was evaluated in general relative risk models that describe modification of the excess relative risk (ERR) per gray (Gy) by time since exposure and age at exposure...
December 3, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27913918/new-technique-to-prevent-prolonged-air-leak-use-of-tachosuture-technique
#13
Tatsuya Nishida, Iwao Mikami, Yoshitaka Fujii
Prolonged air leak (defined as air leak >7 days), caused by pulmonary resection or alveolar-pleural fistula, increases postoperative morbidity, prolongs hospital stay and increases healthcare costs. We describe a new technique ('Tachosuture' technique) to prevent prolonged air leak. The key point of this new technique is that air leak is classified into three types and an absorbable suture is added to a TachoSil(®) patch in each type to prevent detachment from the lung parenchyma. Between August 2013 and March 2016, 40 patients underwent thoracoscopic surgery using 'Tachosuture' technique...
December 2, 2016: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27913787/safety-assessment-of-polyquaternium-22-and-polyquarternium-39-as-used-in-cosmetics
#14
Wilbur Johnson, Bart Heldreth, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen
Polyquaternium-22 and polyquaternium-39 are polymers that function as antistatic agents, film formers, and hair fixatives in cosmetic products. These ingredients are being used at concentrations up to 2% (polyquaternium-22, in a rinse-off product) and up to 3% (polyquaternium-39, in rinse-off and leave-on products). The unreacted monomer content of these ingredients was considered low and of no toxicological concern. Limited data showed no skin irritation/sensitization. Although these ingredients were nongenotoxic in bacterial assays, mammalian genotoxicity, carcinogenicity, and reproductive and developmental toxicity data were not available...
November 2016: International Journal of Toxicology
https://www.readbyqxmd.com/read/27913785/safety-assessment-of-alumina-and-aluminum-hydroxide-as-used-in-cosmetics
#15
Lillian C Becker, Ivan Boyer, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen
This is a safety assessment of alumina and aluminum hydroxide as used in cosmetics. Alumina functions as an abrasive, absorbent, anticaking agent, bulking agent, and opacifying agent. Aluminum hydroxide functions as a buffering agent, corrosion inhibitor, and pH adjuster. The Food and Drug Administration (FDA) evaluated the safe use of alumina in several medical devices and aluminum hydroxide in over-the-counter drugs, which included a review of human and animal safety data. The Cosmetic Ingredient Review (CIR) Expert Panel considered the FDA evaluations as part of the basis for determining the safety of these ingredients as used in cosmetics...
November 2016: International Journal of Toxicology
https://www.readbyqxmd.com/read/27913454/the-anti-bat-strategy-of-ultrasound-absorption-the-wings-of-nocturnal-moths-bombycoidea-saturniidae-absorb-more-ultrasound-than-the-wings-of-diurnal-moths-chalcosiinae-zygaenoidea-zygaenidae
#16
Athanasios Ntelezos, Francesco Guarato, James F C Windmill
The selection pressure from echolocating bats has driven the development of a diverse range of anti-bat strategies in insects. For instance, several studies have proposed that the wings of some moths absorb a large portion of the sound energy contained in a bat's ultrasonic cry; as a result, the bat receives a dampened echo, and the moth becomes invisible to the bat. To test the hypothesis that greater exposure to bat predation drives the development of higher ultrasound absorbance, we used a small reverberation chamber to measure the ultrasound absorbance of the wings of nocturnal (Bombycoidea: Saturniidae) and diurnal moths (Chalcosiinae: Zygaenoidea: Zygaenidae)...
December 2, 2016: Biology Open
https://www.readbyqxmd.com/read/27913359/network-unfolding-map-by-vertex-edge-dynamics-modeling
#17
Filipe Alves Neto Verri, Paulo Roberto Urio, Liang Zhao
The emergence of collective dynamics in neural networks is a mechanism of the animal and human brain for information processing. In this paper, we develop a computational technique using distributed processing elements in a complex network, which are called particles, to solve semisupervised learning problems. Three actions govern the particles' dynamics: generation, walking, and absorption. Labeled vertices generate new particles that compete against rival particles for edge domination. Active particles randomly walk in the network until they are absorbed by either a rival vertex or an edge currently dominated by rival particles...
November 29, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/27912130/acidity-triggered-charge-convertible-nanoparticles-that-can-cause-bacterium-specific-aggregation-in-situ-to-enhance-photothermal-ablation-of-focal-infection
#18
Chiranjeevi Korupalli, Chieh-Cheng Huang, Wei-Chih Lin, Wen-Yu Pan, Po-Yen Lin, Wei-Lin Wan, Meng-Ju Li, Yen Chang, Hsing-Wen Sung
Focal infections that are caused by antibiotic-resistant bacteria are becoming an ever-growing challenge to human health. To address this challenge, a pH-responsive amphiphilic polymer of polyaniline-conjugated glycol chitosan (PANI-GCS) that can self-assemble into nanoparticles (NPs) in situ is developed. The PANI-GCS NPs undergo a unique surface charge conversion that is induced by their local pH, favoring bacterium-specific aggregation without direct contact with host cells. Following conjugation onto GCS, the optical-absorbance peak of PANI is red-shifted toward the near-infrared (NIR) region, enabling PANI-GCS NPs to generate a substantial amount of heat, which is emitted to their neighborhood...
November 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27911535/enhanced-spin-orbit-torque-via-modulation-of-spin-current-absorption
#19
Xuepeng Qiu, William Legrand, Pan He, Yang Wu, Jiawei Yu, Rajagopalan Ramaswamy, Aurelien Manchon, Hyunsoo Yang
The magnitude of spin-orbit torque (SOT), exerted to a ferromagnet (FM) from an adjacent heavy metal (HM), strongly depends on the amount of spin current absorbed in the FM. We exploit the large spin absorption at the Ru interface to manipulate the SOTs in HM/FM/Ru multilayers. While the FM thickness is smaller than its spin dephasing length of 1.2 nm, the top Ru layer largely boosts the absorption of spin currents into the FM layer and substantially enhances the strength of SOT acting on the FM. Spin-pumping experiments induced by ferromagnetic resonance support our conclusions that the observed increase in the SOT efficiency can be attributed to an enhancement of the spin-current absorption...
November 18, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27911468/radical-cystectomy-and-cutaneous-ureterostomy-in-4-dogs-with-trigonal-transitional-cell-carcinoma-description-of-technique-and-case-series
#20
Rafael Ricardo Huppes, Leandro Z Crivellenti, Andrigo Barboza De Nardi, Bruno Roque Lima, Cristiane Alves Cintra, Jorge Luiz Costa Castro, Christopher A Adin
OBJECTIVE: To describe radical cystectomy followed by cutaneous ureterostomy as a treatment of invasive bladder neoplasia in dogs. STUDY DESIGN: Retrospective study. ANIMALS: Client-owned dogs with transitional cell carcinoma of the bladder trigone (n=4). METHODS: Perioperative complications and long-term outcomes of dogs that underwent cutaneous ureterostomy following radical cystectomy and lymphadenectomy for transitional cell carcinoma of the urinary bladder trigone were reviewed...
December 1, 2016: Veterinary Surgery: VS
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