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https://www.readbyqxmd.com/read/29054117/assessing-global-range-expansion-in-a-cryptic-species-complex-insights-from-the-red-seaweed-genus-asparagopsis-florideophyceae
#1
Marianela Zanolla, María Altamirano, Raquel Carmona, Julio De la Rosa, Virginia Souza-Egipsy, Alison Sherwood, Konstantinos Tsiamis, Ana Márcia Barbosa, Antonio Román Muñoz, Nikos Andreakis
The mitochondrial genetic diversity, distribution and invasive potential of multiple cryptic operational taxonomic units (OTUs) of the red invasive seaweed Asparagopsis were assessed by studying introduced Mediterranean and Hawaiian populations. Invasive behavior of each Asparagopsis OTU was inferred from phylogeographic reconstructions, past historical demographic dynamics, recent range expansion assessments and future distributional predictions obtained from demographic models. Genealogical networks resolved Asparagopsis gametophytes and tetrasporophytes into four A...
October 20, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/29053928/heat-stress-risk-profiles-for-three-non-woven-coveralls
#2
Ximena P Garzón-Villalba, Yougui Wu, Candi D Ashley, Thomas E Bernard
The ACGIH® Threshold Limit Value® (TLV®) is used to limit heat stress exposures so that most workers can maintain thermal equilibrium. That is, the TLV was set to an upper limit of Sustainable exposures for most people. This paper addresses the ability of the TLV to differentiate between Sustainable and Unsustainable heat exposures for four clothing ensembles over a range of environmental factors and metabolic rates (M). The four clothing ensembles (woven clothing, and particle barrier, water barrier and vapor barrier coveralls) represented a wide range of evaporative resistances...
October 20, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29053647/efficacy-of-different-methods-used-for-dry-socket-prevention-and-risk-factor-analysis-a-systematic-review
#3
M Taberner-Vallverdú, M-Á Sánchez-Garcés, C Gay-Escoda
BACKGROUND: Dry socket is one of the most common complications that develops after the extraction of a permanent tooth, and its prevention is more effective than its treatment. OBJECTIVES: Analyze the efficacy of different methods used in preventing dry socket in order to decrease its incidence after tooth extraction. MATERIAL AND METHODS: A Cochrane and PubMed-MEDLINE database search was conducted with the search terms "dry socket", "prevention", "risk factors", "alveolar osteitis" and "fibrynolitic alveolitis", both individually and using the Boolean operator "AND"...
October 20, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29053523/enhanced-informed-consent-in-hand-surgery-techniques-to-improve-the-informed-consent-process
#4
Brent R DeGeorge, Anthony J Archual, Bruce D Gehle, Raymond F Morgan
The informed consent process is central to the practice of surgery. Rather than a single event or required form, informed consent should be an educational discussion between the surgeon and patient covering the proposed benefits, risks, potential complications, and alternatives of a given operation. The rise in medical malpractice claims in recent decades has placed ever greater importance on the informed consent process. Informed consent requires a patient with decision making capacity to comprehend the pertinent details of the proposed intervention...
October 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29053492/significance-of-mini-bronchoalveolar-lavage-fluid-amylase-level-in-ventilator-associated-pneumonia-a-prospective-observational-study
#5
Sukhen Samanta, Banani Poddar, Afzal Azim, Ratender K Singh, Mohan Gurjar, Arvind K Baronia
OBJECTIVES: Aspiration of oropharyngeal or gastric contents in intubated patients can lead to ventilator-associated pneumonia. Amylase in respiratory secretion has been reported as a possible marker of aspiration. We studied whether elevated α-amylase in mini bronchoalveolar lavage specimens can be suggestive of ventilator-associated pneumonia in intubated patients with high clinical suspicion. DESIGN: Prospective single-center observational study. SETTING: Department of Critical Care Medicine, tertiary care academic institute...
October 19, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/29052940/outcomes-of-percutaneous-cholecystostomy-and-predictors-of-subsequent-cholecystectomy
#6
Scott Cooper, Michael Donovan, David A Grieve
BACKGROUND: The use of a percutaneous cholecystostomy (PC) in the management of severe acute cholecystitis is a well recognized alternative to acute cholecystectomy. The need for definitive surgical management remains controversial. METHODS: A retrospective analysis of hospital records at Nambour General Hospital between 2012 and 2016 was conducted and data relating to indications, demographics, comorbidities and outcomes were collected. RESULTS: Thirty PC patients (20 male and 10 female) were identified, with a mean age of 77 years (range 46-93)...
October 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/29052551/planning-low-carbon-electricity-systems-under-uncertainty-considering-operational-flexibility-and-smart-grid-technologies
#7
Rodrigo Moreno, Alexandre Street, José M Arroyo, Pierluigi Mancarella
Electricity grid operators and planners need to deal with both the rapidly increasing integration of renewables and an unprecedented level of uncertainty that originates from unknown generation outputs, changing commercial and regulatory frameworks aimed to foster low-carbon technologies, the evolving availability of market information on feasibility and costs of various technologies, etc. In this context, there is a significant risk of locking-in to inefficient investment planning solutions determined by current deterministic engineering practices that neither capture uncertainty nor represent the actual operation of the planned infrastructure under high penetration of renewables...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052550/an-input-to-state-stability-approach-to-verify-almost-global-stability-of-a-synchronous-machine-infinite-bus-system
#8
Johannes Schiffer, Denis Efimov, Romeo Ortega, Nikita Barabanov
Conditions for almost global stability of an operating point of a realistic model of a synchronous generator with constant field current connected to an infinite bus are derived. The analysis is conducted by employing the recently proposed concept of input-to-state stability (ISS)-Leonov functions, which is an extension of the powerful cell structure principle developed by Leonov and Noldus to the ISS framework. Compared with the original ideas of Leonov and Noldus, the ISS-Leonov approach has the advantage of providing additional robustness guarantees...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052549/a-methodology-to-assess-the-economic-impact-of-power-storage-technologies
#9
Laila El-Ghandour, Timothy C Johnson
We present a methodology for assessing the economic impact of power storage technologies. The methodology is founded on classical approaches to the optimal stopping of stochastic processes but involves an innovation that circumvents the need to, ex ante, identify the form of a driving process and works directly on observed data, avoiding model risks. Power storage is regarded as a complement to the intermittent output of renewable energy generators and is therefore important in contributing to the reduction of carbon-intensive power generation...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052547/partial-differential-equation-methods-for-stochastic-dynamic-optimization-an-application-to-wind-power-generation-with-energy-storage
#10
Paul Johnson, Sydney Howell, Peter Duck
A mixed financial/physical partial differential equation (PDE) can optimize the joint earnings of a single wind power generator (WPG) and a generic energy storage device (ESD). Physically, the PDE includes constraints on the ESD's capacity, efficiency and maximum speeds of charge and discharge. There is a mean-reverting daily stochastic cycle for WPG power output. Physically, energy can only be produced or delivered at finite rates. All suppliers must commit hourly to a finite rate of delivery C, which is a continuous control variable that is changed hourly...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052546/real-option-valuation-of-a-decremental-regulation-service-provided-by-electricity-storage
#11
Dávid Zoltán Szabó, Randall Martyr
This paper is a quantitative study of a reserve contract for real-time balancing of a power system. Under this contract, the owner of a storage device, such as a battery, helps smooth fluctuations in electricity demand and supply by using the device to increase electricity consumption. The battery owner must be able to provide immediate physical cover, and should therefore have sufficient storage available in the battery before entering the contract. Accordingly, the following problem can be formulated for the battery owner: determine the optimal time to enter the contract and, if necessary, the optimal time to discharge electricity before entering the contract...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052543/probabilistic-stability-analysis-the-way-forward-for-stability-analysis-of-sustainable-power-systems
#12
Jovica V Milanović
Future power systems will be significantly different compared with their present states. They will be characterized by an unprecedented mix of a wide range of electricity generation and transmission technologies, as well as responsive and highly flexible demand and storage devices with significant temporal and spatial uncertainty. The importance of probabilistic approaches towards power system stability analysis, as a subsection of power system studies routinely carried out by power system operators, has been highlighted in previous research...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29052179/thyroid-reoperation-using-intraoperative-neuromonitoring
#13
Beata Wojtczak, Krzysztof Sutkowski, Krzysztof Kaliszewski, Marcin Barczyński, Marek Bolanowski
PURPOSE: Thyroid reoperations are at a high risk of recurrent laryngeal nerve (RLN) injury. The aim of the study was to investigate whether the use of intraoperative neuromonitoring (IONM) can aid in the RLN identification and minimize the risk of its injury, in comparison with visual RLN identification. METHODS: This was a retrospective cohort study of patients who underwent thyroid reoperations with and without the use of IONM. Primary endpoint was the RLN identification rate; secondary: the prevalence of RLN injury, the frequency of total thyroidectomies, and the course of the RLN...
October 19, 2017: Endocrine
https://www.readbyqxmd.com/read/29052108/risk-factors-for-complications-among-breast-cancer-patients-treated-with-post-mastectomy-radiotherapy-and-immediate-tissue-expander-permanent-implant-reconstruction-a-retrospective-cohort-study
#14
Mami Ogita, Naomi Nagura, Jiro Kawamori, Reika In, Atsushi Yoshida, Hideko Yamauchi, Junko Takei, Naoki Hayashi, Yoshiko Iwahira, Sachiko Ohde, Shoko Fukushima, Kenji Sekiguchi
BACKGROUND: The use of post-mastectomy radiotherapy (PMRT) following immediate breast reconstruction has increased recently, and its safety is becoming a major concern. We aimed to evaluate the complication rates of PMRT to immediate tissue-expander/permanent implant (TE/PI)-based reconstructions for breast cancer and its association with radiotherapy timing (irradiation to TE or PI). METHODS: We retrospectively reviewed the cases of breast cancer patients who underwent mastectomy, immediate TE/PI reconstruction, and PMRT between January 2003 and December 2014...
October 19, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29052070/the-feasibility-of-laparoscopic-rectal-resection-in-patients-undergoing-reoperation-after-transanal-endoscopic-microsurgery-tem
#15
M Ortenzi, R Ghiselli, A Paolucci, M Guerrieri
BACKGROUND: The success of transanal endoscopic microsurgery (TEM) for early rectal cancer depends on proper indications and strict patient selection. When unfavorable pathologic features are identified after TEM operation, total mesorectal excision is recommended to minimize the risk of recurrence. In this study, data were collected in a retrospective series of patients to determine the results of laparoscopic reoperation after TEM. METHODS: All patients underwent an accurate rectal-digital examination and clinical tumor staging by transanal endosonography, CT, and/or MRI...
October 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29052067/concomitant-open-ventral-hernia-repair-what-is-the-financial-impact-of-performing-open-ventral-hernia-with-other-abdominal-procedures-concomitantly
#16
Vashisht Madabhushi, Margaret A Plymale, John Scott Roth, Sara Johnson, Alex Wade, Daniel L Davenport
BACKGROUND: Open ventral hernia repair (VHR) is often performed in conjunction with other abdominal procedures. Clinical outcomes and financial implications of VHR are becoming better understood; however, financial implications of concomitant VHR during other abdominal procedures are unknown. This study aimed to evaluate the financial implications of adding VHR to open abdominal procedures. METHODS: This IRB-approved study retrospectively reviewed hospital costs to 180-day post-discharge of standalone VHRs, isolated open abdominal surgeries (bowel resection or stoma closure, removal of infected mesh, hysterectomy or oophorectomy, panniculectomy or abdominoplasty, open appendectomy or cholecystectomy), performed at our institution from October 1, 2011 to September 30, 2014...
October 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29052064/determinants-of-variability-in-management-of-acute-calculous-cholecystitis
#17
Philippe Paci, Nancy E Mayo, Pepa A Kaneva, Julio F Fiore, Gerald M Fried, Liane S Feldman
BACKGROUND: While evidence supports early compared to delayed cholecystectomy as optimal management of acute calculous cholecystitis (ACC), significant variability in practice remains. The purpose of this study was to identify variables associated with early cholecystectomy, to target opportunities to improve adherence to best practices. METHODS: Adult patients admitted to surgical units with ACC at two hospitals in a university hospital network between June 2010 and January 2015 were reviewed...
October 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29052036/rapidly-increasing-incidence-in-scoliosis-surgery-over-14%C3%A2-years-in-a-nationwide-sample
#18
Johan von Heideken, Maura D Iversen, Paul Gerdhem
PURPOSE: Severe scoliosis is primarily managed with surgery. This cohort study describes the incidence of surgically treated scoliosis among Swedish youth and young adults, stratified by age, sex, scoliosis type, and surgical approach and identifies changes in incidence rate and hospital length of stay (LOS), infections requiring re-surgery and mortality within 90 days. METHODS: Swedish youth, 0-21 years, (n = 3062) with a diagnostic code for scoliosis and spine surgery between 2000 and 2013 were selected from the National Patient Register...
October 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29052006/risk-factors-for-and-the-prevention-of-acute-kidney-injury-after-abdominal-surgery
#19
REVIEW
Yongbo An, Kai Shen, Yingjiang Ye
Postoperative acute kidney injury in patients undergoing abdominal surgery is not rare and often results in bad outcomes for patients. The incidence of postoperative acute kidney injury is hard to evaluate reliably due to its non-unified definitions in different studies. Risk factors for acute kidney injury specific to abdominal surgery include preoperative renal insufficiency, intraabdominal hypertension, blood transfusion, bowel preparation, perioperative dehydration, contrast agent and nephrotoxic drug use...
October 19, 2017: Surgery Today
https://www.readbyqxmd.com/read/29051968/impact-of-surgical-lighting-on-intraoperative-safety-in-low-resource-settings-a-cross-sectional-survey-of-surgical-providers
#20
Jared A Forrester, Nicholas J Boyd, J Edward F Fitzgerald, Iain H Wilson, Abebe Bekele, Thomas G Weiser
BACKGROUND: Safe surgery requires high-quality, reliable lighting of the surgical field. Little is reported on the quality or potential safety impact of surgical lighting in low-resource settings, where power failures are common and equipment and resources are limited. METHODS: Members of the Lifebox Foundation created a novel, non-mandatory, 18-item survey tool using an iterative process. This was distributed to surgical providers practicing in low-resource settings through surgical societies and mailing lists...
October 19, 2017: World Journal of Surgery
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