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https://www.readbyqxmd.com/read/28091534/fisheries-portfolio-diversification-and-turnover-buffer-alaskan-fishing-communities-from-abrupt-resource-and-market-changes
#1
Timothy J Cline, Daniel E Schindler, Ray Hilborn
Abrupt shifts in natural resources and their markets are a ubiquitous challenge to human communities. Building resilient social-ecological systems requires approaches that are robust to uncertainty and to regime shifts. Harvesting diverse portfolios of natural resources and adapting portfolios in response to change could stabilize economies reliant on natural resources and their markets, both of which are prone to unpredictable shifts. Here we use fisheries catch and revenue data from Alaskan fishing communities over 34 years to test whether diversification and turnover in the composition of fishing opportunities increased economic stability during major ocean and market regime shifts in 1989...
January 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28087135/surgical-site-infection-related-to-use-of-elastomeric-pumps-in-pectus-excavatum-repair-lessons-learned-from-root-cause-analysis
#2
Nadja Apelt, Joshua Schaffzin, Christina Bates, Rebeccah L Brown, Marc Mecoli, Senthilkumar Sadhasivam, Victor Garcia
BACKGROUND: Pectus excavatum repair (PEX) is among the most painful thoracic procedures performed. Continuous peripheral nerve blockade (CPNB) is known to be efficacious in optimizing pain control while limiting narcotic use in adult thoracic procedures. It was introduced in May 2015 as a bridge to oral pain control in children undergoing PEX. Consequently, the surgical site infection (SSI) rate increased from 2.7% to 27.7%. METHODS: SSI surveillance followed national guidelines...
January 6, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28087073/abnormal-mortality-of-octopus-after-a-storm-water-event-accumulated-lead-and-lead-isotopes-as-fingerprints
#3
J Raimundo, F Ruano, J Pereira, M Mil-Homens, P Brito, C Vale, M Caetano
Octopus vulgaris is a sedentary organism that inhabits coastal waters being exposed to anthropogenic compounds. Lead concentration in coastal environments reflects many processes and activities namely weathering, industrial and domestic discharges, and atmospheric deposition. Since lead isotopic composition is little affected by kinetic processes occurring between source and sink, its signature has been used to identify different Pb sources. After a short-term heavy rainfall, hundreds of octopus appeared dead in two Portuguese coastal areas...
January 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28081508/historical-variation-in-black-carbon-deposition-and-sources-to-northern-china-sediments
#4
Wenxue Xu, Fu Wang, Jiwei Li, Lizhu Tian, Xingyu Jiang, Jilong Yang, Bing Chen
Black carbon (BC) in fine particulate matter (PM2.5) is an important air pollutant in a large area of China. We have reconstructed a 100-year-long history of BC deposition based on analyses of sediment samples in the coastal area of the Northern China Plain (NCP). During 1900-2010, the sedimentary BC concentrations at three cores increased from 0.2 to 1.3, from 0.2 to 2.3, and from 0.2 to 1.9 mg g(-1), and the ranges for the BC deposition fluxes were 0.1-4.7, 0.1-8.2, 0.2-7.4 g m(-2) a(-1), suggesting the increase of ten times from the pre-industrial era...
January 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28081120/epidemiology-of-chikungunya-virus-outbreaks-in-guadeloupe-and-martinique-2014-an-observational-study-in-volunteer-blood-donors
#5
Pierre Gallian, Isabelle Leparc-Goffart, Pascale Richard, Françoise Maire, Olivier Flusin, Rachid Djoudi, Jacques Chiaroni, Remi Charrel, Pierre Tiberghien, Xavier de Lamballerie
BACKGROUND: During Dec-2013, a chikungunya virus (CHIKV) outbreak was first detected in the French-West Indies. Subsequently, the virus dispersed to other Caribbean islands, continental America and many islands in the Pacific Ocean. Previous estimates of the attack rate were based on declaration of clinically suspected cases. METHODS/PRINCIPAL FINDINGS: Individual testing for CHIKV RNA of all (n = 16,386) blood donations between Feb-24th 2014 and Jan-31st 2015 identified 0·36% and 0·42% of positives in Guadeloupe and Martinique, respectively...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28080302/the-road-to-bribery-and-corruption
#6
Nils C Köbis, Jan-Willem van Prooijen, Francesca Righetti, Paul A M Van Lange
Major forms of corruption constitute a strong threat to the functioning of societies. The most frequent explanation of how severe corruption emerges is the slippery-slope metaphor-the notion that corruption occurs gradually. While having widespread theoretical and intuitive appeal, this notion has barely been tested empirically. We used a recently developed paradigm to test whether severely corrupt acts happen gradually or abruptly. The results of four experimental studies revealed a higher likelihood of severe corruption when participants were directly given the opportunity to engage in it (abrupt) compared with when they had previously engaged in minor forms of corruption (gradual)...
January 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28079962/determining-electrochemical-surface-stress-of-single-nanowires
#7
Hui Wang, Xiaonan Shan, Hui Yu, Yan Wang, Wolfgang Schmickler, Hong-Yuan Chen, Nongjian Tao
Electrochemical surface stress is important in nanomaterials because of their large surface-to-volume ratios, which lead to unique mechanical and electrocatalytic properties, but directly measuring this quantity has been challenging. Here we report on experimental determination of the surface stress, and associated electrochemical processes of a single gold nanowire with an optical imaging technique. We show that surface stress changes linearly and reversibly with the potential between 0 and 0.8 V versus Ag/AgCl, but abruptly with large hysteresis, associated with the oxidation and reduction of the nanowire, between 0...
January 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28079209/dynamic-phase-change-and-local-structures-in-il-containing-mixtures-classical-md-simulations-and-experiments
#8
Yang Wu, Xia Wang, Qiaozhen Liu, Xiaoxue Ma, Dawei Fang, Xuefei Jiang, Wei Guan
The dynamic phase change between a homogeneous mixture and a liquid-liquid biphase and separation of phases are explored in three-component mixtures composed of 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]), 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]), and water through a classical simulation method and experiment. Different experimental and theoretical tools, including density measurement, dynamic light scattering study, radial distribution, mean square displacement, an interstice model, and statistical function, are used to describe the structural modifications of the ions as a function of solution concentration...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#9
Sayf Al-Katib, Monisha Shetty, Syed Mohammad A Jafri, Syed Zafar H Jafri
A wide range of clinically important anatomic variants and pathologic conditions may affect the renal vasculature, and radiologists have a pivotal role in the diagnosis and management of these processes. Because many of these entities may not be suspected clinically, renal artery and vein assessment is an essential application of all imaging modalities. An understanding of the normal vascular anatomy is essential for recognizing clinically important anatomic variants. An understanding of the protocols used to optimize imaging modalities also is necessary...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28074968/symmetry-breaking-above-room-temperature-in-an-fe-ii-spin-crossover-complex-with-an-n4o2-donor-set
#10
Wasinee Phonsri, Casey G Davies, Guy N L Jameson, Boujemaa Moubaraki, Jas S Ward, Paul E Kruger, Guillaume Chastanet, Keith S Murray
[Fe(qsal-Cl)2] is one of the few known Fe(ii) spin crossover compounds with an N4O2 donor atom environment. It shows an abrupt two-step spin transition at 308 and 316 K and importantly, symmetry breaking at the highest temperature reported, to date, in spin crossover compounds.
January 11, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28071701/simultaneous-abrupt-shifts-in-hydrology-and-fish-assemblage-structure-in-a-floodplain-lake-in-the-central-amazon
#11
Cristhiana P Röpke, Sidinéia Amadio, Jansen Zuanon, Efrem J G Ferreira, Cláudia Pereira de Deus, Tiago H S Pires, Kirk O Winemiller
Combined effects of climate change and deforestation have altered precipitation patterns in the Amazon. This has led to changes in the frequency of extreme events of flood and drought in recent decades and in the magnitude of the annual flood pulse, a phenomenon that influences virtually all aspects of river-floodplain ecosystem dynamics. Analysis of long-term data revealed abrupt and synchronous changes in hydrology and fish assemblage structure of a floodplain lake near the confluence of Amazon and Negro rivers...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070560/overlooked-possibility-of-a-collapsed-atlantic-meridional-overturning-circulation-in-warming-climate
#12
Wei Liu, Shang-Ping Xie, Zhengyu Liu, Jiang Zhu
Changes in the Atlantic Meridional Overturning Circulation (AMOC) are moderate in most climate model projections under increasing greenhouse gas forcing. This intermodel consensus may be an artifact of common model biases that favor a stable AMOC. Observationally based freshwater budget analyses suggest that the AMOC is in an unstable regime susceptible for large changes in response to perturbations. By correcting the model biases, we show that the AMOC collapses 300 years after the atmospheric CO2 concentration is abruptly doubled from the 1990 level...
January 2017: Science Advances
https://www.readbyqxmd.com/read/28070489/acute-disseminated-histoplasmosis-with-atypical-lymphocytosis-in-an-immunocompetent-host
#13
Ayman Elbadawi, Hamdy M A Ahmed, Hussain Adly, Mohamed A Elkhouly, Samar Abohamed, Ann R Falsey
65 year-old-male presented with a one-week history of high grade fever, fatigue and confusion which began abruptly two days after a cystoscopy procedure. Past medical history included pulmonary sarcoidosis diagnosed by mediastinal lymph biopsy, diabetes and hypertension. On admission he was febrile and confused with stable vital signs. Initial workup included negative Head CT and lumbar puncture. Blood work revealed normal metabolic and liver function tests with progressive anemia, thrombocytopenia and atypical lymphocytosis of 15-20%...
2017: IDCases
https://www.readbyqxmd.com/read/28070056/a-case-of-idiopathic-type-1-diabetes-with-subsequent-recovery-of-endogenous-insulin-secretion-despite-initial-diagnosis-of-fulminant-type-1-diabetes
#14
Keizo Kaneko, Chihiro Satake, Junpei Yamamoto, Hironori Takahashi, Shojiro Sawada, Junta Imai, Tetsuya Yamada, Hideki Katagiri
Fulminant type 1 diabetes is characterized by remarkably rapid and complete β-cell destruction. The established diagnostic criteria include the occurrence of diabetic ketosis soon after the onset of hyperglycemic symptoms, elevated plasma glucose with relatively low HbA1c at the first visit, and extremely low C-peptide. Serum C-peptide levels remain extremely low over a prolonged period. A 26-year-old-man with diabetic ketosis was admitted to our hospital. His relatively low HbA1c (7.6 %), despite marked hyperglycemia (593 mg/dL) with marked ketosis, indicated abrupt onset...
January 6, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28069049/dedifferentiated-endometrioid-carcinoma-of-the-uterus-report-of-four-cases-and-review-of-literature
#15
Jiheun Han, Eun Young Ki, Sung Eun Rha, SooYoung Hur, Ahwon Lee
BACKGROUND: Dedifferentiated endometrioid adenocarcinoma (DEAC) is rare and is known to be more aggressive than high-grade endometrioid carcinoma. Differentiating between the two is important to provide appropriate treatment for patients. CASE PRESENTATION: This is a retrospective study including four cases of DEAC of the uterus, which was diagnosed and treated in our Obstetrics and Gynecology department between January 2013 and December 2015. Clinical, pathological, and immunohistochemical staining features are discussed...
January 10, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28068101/supramolecular-big-bang-in-single-ionic-surfactant-water-system-driven-by-electrostatic-repulsions-from-vesicles-to-micelles
#16
Loïc Leclercq, Pierre Bauduin, Véronique Nardello-Rataj
In aqueous solution, dimethyl-di-n-octylammonium chloride, [DiC8][Cl], forms spontaneously dimers at low concentrations (1-10 mM) in order to decrease the hydrophobic/water contact. Dimers represent ideal building blocks for the abrupt edification of vesicles at 10 mM. These vesicles are fully characterized by dynamic and static light scattering, self-diffusion NMR and freeze-fracture transmission electron microscopy. An increase in concentration leads to electrostatic repulsions between vesicles which explode into small micelles at 30 mM...
January 9, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28067706/impact-of-systemic-vascular-resistance-on-the-accuracy-of-the-pulsioflex-device
#17
Matthieu Biais, Elodie Mazocky, Laurent Stecken, Bruno Pereira, Musa Sesay, Stéphanie Roullet, Alice Quinart, François Sztark
BACKGROUND: The accuracy of currently available devices using pulse contour analysis without external calibration for cardiac index (CI) estimation is negatively impacted by hyperdynamic states, low systemic vascular resistance (SVR), and abrupt changes in SVR. The aim of this study was to evaluate the accuracy of a new device, the Pulsioflex (Pulsion Medical System), in patients undergoing liver transplantation. METHODS: Thirty consecutive patients scheduled for liver transplantation were included...
January 5, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28063816/trends-in-the-use-of-implantable-accelerated-partial-breast-irradiation-for-ductal-carcinoma-in-situ-implications-of-the-recent-amendments-to-the-american-society-for-radiation-oncology-consensus-guidelines
#18
Waqar Haque, Vivek Verma, Anam Haque, E Brian Butler, Bin S Teh
PURPOSE: In 2009, the American Society for Radiation Oncology (ASTRO) published consensus recommendations that stated ductal carcinoma in situ (DCIS) patients were in a "cautionary" group for accelerated partial breast irradiation (APBI) and should not receive APBI outside of a clinical trial. However, very recently, ASTRO placed low-risk DCIS patients in the "suitable" category. Given this recent change, we aimed to use the Surveillance, Epidemiology, and End Results (SEER) database to evaluate past patterns of implantable APBI (IAPBI) utilization in women with DCIS...
January 4, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28063247/replacing-corn-with-sorghum-in-the-diet%C3%A2-alters-intestinal-microbiota-without-altering-chicken-performance
#19
N S Fagundes, R Pereira, C Bortoluzzi, J M Rafael, G S Napty, J G M Barbosa, M C M Sciencia, J F M Menten
Sorghum grain can be used to replace corn in broiler diets. However, the effects related to an abrupt change between these grains are not yet clear. The aim of this study was to evaluate the performance and intestinal health of broilers fed diets containing corn and/or sorghum during different periods of rearing. To accomplish this aim, 2100 male chicks were fed the following experimental diets: C100% (corn-based diet); S100% (sorghum-based diet); C:S50% (diet based on corn and sorghum 1:1); PC-S (corn-based diet in the pre-starter phase and sorghum-based diet in subsequent phases); and PS-C (sorghum-based diet in the pre-starter phase and corn-based diet in subsequent phases)...
January 7, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28061002/closed-form-expressions-for-flip-angle-variation-that-maximize-total-signal-in-t1-weighted-rapid-gradient-echo-mri
#20
Matthias Drobnitzky, Uwe Klose
PURPOSE: Magnetization-prepared rapid gradient-echo (MPRAGE) sequences are commonly employed for T1-weighted structural brain imaging. Following a contrast preparation radiofrequency (RF) pulse the data acquisition proceeds under non-equilibrium conditions of the relaxing longitudinal magnetization. Variation of the flip angle can be used to maximize total available signal. Simulated annealing or greedy algorithms have so far been published to numerically solve this problem, with signal to noise ratios optimized for clinical imaging scenarios by adhering to a predefined shape of the signal evolution...
January 6, 2017: Medical Physics
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