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José R Agudo, Jiwon Han, Jinyoung Park, Sinyoung Kwon, Soebiakto Loekman, Giovanni Luzi, Christoph Linderberger, Antonio Delgado, Andreas Wierschem
Two different experimental methods for determining the threshold of particle motion as a function of geometrical properties of the bed from laminar to turbulent flow conditions are presented. For that purpose, the incipient motion of a single bead is studied on regular substrates that consist of a monolayer of fixed spheres of uniform size that are regularly arranged in triangular and quadratic symmetries. The threshold is characterized by the critical Shields number. The criterion for the onset of motion is defined as the displacement from the original equilibrium position to the neighboring one...
February 22, 2018: Journal of Visualized Experiments: JoVE
Nagisa Okada, Akinori Nakata, Masahiro Nakano, Kumiko Sakai, Kiyako Takai, Hiromi Kodama, Toshio Kobayashi
Many female nurses leave their jobs because of major life events. However, the mental health status and related factors among nurses who assume the roles of wives and/or mothers have been insufficiently examined. Therefore we examined the mental health levels and related factors among such nurse. We conducted a questionnaire survey on 763 female nurses working at general hospitals with over 200 beds in Fukuoka Prefecture. Of 402 responses, 108 were divided into two groups: nurses who had left because of marriage, childbirth, or childrearing (leaving group), and those who had not (non-leaving group)...
2018: Journal of UOEH
Hayley B Gershengorn, Carri W Chan, Yunchao Xu, Hanxi Sun, Ronni Levy, Mor Armony, Michelle N Gong
OBJECTIVE: To understand the impact of adding a medical step-down unit (SDU) on patient outcomes and throughput in a medical intensive care unit (ICU). DESIGN: Retrospective cohort study. SETTING: Two academic tertiary care hospitals within the same health-care system. PATIENTS: Adults admitted to the medical ICU at either the control or intervention hospital from October 2013 to March 2014 (preintervention) and October 2014 to March 2015 (postintervention)...
January 1, 2018: Journal of Intensive Care Medicine
Jia-Xuan Xu, Jun Dong, Hong Ren, Xiao-Jie Chen, Yong Yang, Ren-Xiong Chen, Guo-Dong Wang, Hong-Zhi Wang
PURPOSE: The occurrence of venous thromboembolism (VTE) in Chinese cancer patients admitted to intensive care unit (ICU) for postoperative care is poorly characterized. This study was designed to investigate the incidence of VTE in this polulation and to evaluate the utility of the Caprini score in risk stratification. METHODS: We conducted a retrospective cohort study of 2127 consecutive adult patients admitted to a 10-bed surgical ICU in a tertiary care academic hospital during a 4-year period (January 1,2013 to December 31,2016)...
January 2018: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
Benedito Jamilson Araújo Pereira, Antônio Nogueira de Almeida, Wellingson Silva Paiva, Manoel Jacobsen Teixeira, Suely Kazue Nagahashi Marie
Evaluate whether radiotherapy (RT) after the neurosurgical treatment of atypical meningiomas (AM) has an impact on the reduction rate of recurrence. A Medline search through October 2017 using "atypical meningioma" returned 1277 papers for initial review. Inclusion criteria were as follows. We analyzed the database and included articles in which the anatomic pathological classification of atypical meningiomas was in accordance with WHO 2007 or WHO 2016 criteria, patients > 18 years of age, and there was postoperative external beam radiation to the tumor bed...
March 19, 2018: Neurosurgical Review
Blake P Sampson, Aaron M Secrest, Christopher B Hansen, Alan C Geller
BACKGROUND: The commercial tanning industry has opposed efforts to educate the public on the risks of tanning as well as attempts to restrict minors' access to tanning services. Despite a paucity of supporting literature, statements from the tanning industry claiming that dermatologists routinely use in-office phototherapy for cosmetic treatments and refer patients to tanning salons have successfully derailed and defeated legislation in many states. OBJECTIVE: This study aims to evaluate dermatologist referrals for ultraviolet radiation for cosmetic and medical purposes via tanning beds or phototherapy, as well as their opinions on tanning, legislation, and ultraviolet radiation counseling practices...
February 2018: Journal of Clinical and Aesthetic Dermatology
Saajida Mahomed, A Willem Sturm, Stephen Knight, Prashini Moodley
Background: Appropriate infection control policies and practices are key to reducing the risk of healthcare-associated infections in patients in intensive care units (ICUs). Objective: To evaluate infection control in ICUs using the Infection Control Assessment Tool (ICAT). Methods: Six public and five private adult ICUs were included. Seven modules from the ICAT were administered including ICU, hand hygiene, and isolation and standard precautions...
March 2018: Journal of Infection Prevention
Soroush Safaei, Pablo J Blanco, Lucas O Müller, Leif R Hellevik, Peter J Hunter
We propose a detailed CellML model of the human cerebral circulation that runs faster than real time on a desktop computer and is designed for use in clinical settings when the speed of response is important. A lumped parameter mathematical model, which is based on a one-dimensional formulation of the flow of an incompressible fluid in distensible vessels, is constructed using a bond graph formulation to ensure mass conservation and energy conservation. The model includes arterial vessels with geometric and anatomical data based on the ADAN circulation model...
2018: Frontiers in Physiology
Xuejiao An, Yi Cheng, Mingyan Huang, Yueling Sun, Hailan Wang, Xi Chen, Jinming Wang, Dapeng Li, Chunyan Li
Organic cyanide are widely used as an ingredient in the production of plastics, synthetic rubbers, polymers, pharmaceuticals and pesticides or used in laboratories and industries as solvents. Although nitrile-containing wastewater is subjected to primary and secondary treatments, residual nitriles may slowly seep and further migrate through groundwater, resulting in the micropollution of groundwater by organic pollutants. In this study, water samples were collected from different study areas in North China during a period of 3y (from 2013 to 2015) and analyzed to evaluate organic cyanide (CN- ) contamination in groundwater...
March 15, 2018: Environmental Pollution
Laura Santambrogio
This review will highlight our current understanding of the formation, circulation, and immunological role of lymphatic fluid. The formation of the extracellular fluid depends on the net balance between the hydrostatic and osmotic pressure gradients effective in the capillary beds. Lymph originates from the extracellular fluid and its composition combines the ultrafiltrated plasma proteins with the proteome generated by the metabolic activities of each parenchymal tissue. Several analyses have indicated how the lymph composition reflects the organs' physiological and pathological states...
2018: International Review of Cell and Molecular Biology
Dina Vojinovic, Sven J van der Lee, Cornelia M van Duijn, Meike W Vernooij, Maryam Kavousi, Najaf Amin, Ayşe Demirkan, M Arfan Ikram, Aad van der Lugt, Daniel Bos
BACKGROUND AND AIMS: Increasing evidence shows that intracranial carotid artery atherosclerosis may develop under the influence of a differential metabolic risk factor profile than atherosclerosis in the extracranial part of the carotid artery. To further elucidate these differences, we investigated associations of a wide range of circulating metabolites with intracranial and extracranial carotid artery atherosclerosis. METHODS: From the population-based Rotterdam Study, blood samples from 1111 participants were used to determine a wide range of metabolites by proton nuclear magnetic resonance (NMR)...
March 8, 2018: Atherosclerosis
Pin Hou, Zhe Yan, Fred S Cannon, Ye Yue, Timothy Byrne, Cesar Nieto-Delgado
In order to obtain a high adsorption capacity for perchlorate, the epoxide-forming quaternary ammonium (EQA) compounds were chemically bonded onto granular activated carbon (GAC) surface by cationic reaction. The optimum preparation condition of the cationic GAC was achieved while applying softwood-based Gran C as the parent GAC, dosing EQA first at a pH of 12, preparation time of 48 h, preparation temperature of 50 °C, and mole ratio of EQA/oxygen groups of 2.5. The most favorable cationic GAC that had the QUAB360 pre-anchored exhibited the highest perchlorate adsorption capacity of 24...
March 6, 2018: Chemosphere
Lovjeet Singh, Pawan Rekha, Shri Chand
In order to find a better alternative of conventional aqueous ion-exchange method, several Cu/zeolite Y samples were synthesized by different routes and examined for the catalytic wet peroxide oxidation of quinoline aqueous solution in continuous fixed-bed reactor. The characterization of catalysts using ICPMS, XRD, N2 sorption, UV-vis DRS, FESEM and XPS techniques reveals the profound influence of preparation methods on synergy between copper-support interfaces. Aqueous ion-exchange (CuYAIE ) and wet-impregnation (CuYIMP ) methods promoted isolated Cu1+/2+ species; however, large crystallites of CuO were present on the external surface of precipitation-impregnation (CuYPI ) catalyst...
March 15, 2018: Journal of Environmental Management
Tyonne D Hinson, Asheley Cockrell Skinner, Kristen Hassmiller Lich, Diane L Spatz
OBJECTIVE: To examine cultural and socioenvironmental factors that affect breastfeeding initiation among African American women. DESIGN: Qualitative descriptive design and conventional content analysis. SETTING: A large, inner-city, primary care center affiliated with a 500-bed children's hospital within a large, Northeastern U.S. city. PARTICIPANTS: Participants were 34 U.S.-born African American mothers of healthy term infants 0 to 3 months of age...
March 15, 2018: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
Masayuki Iwata, Shigeko Saiki-Craighill, Ryouhei Nishina, Ardith Z Doorenbos
OBJECTIVE: The goal was to explore how nurses interact with children in the paediatric intensive care unit during potentially painful procedures. RESEARCH METHODOLOGY/DESIGN: This was a qualitative research study that used grounded theory approach. Data were collected through participant observation and interviews. Nurse-child interactions were observed and recorded during potentially painful procedures performed by nurses. Following observation of a procedure, nurses were interviewed about their intentions, feelings and emotions during the procedure...
March 14, 2018: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
Luo Jia-Ying, Chen Zhao, Guo Jia-Jun, Guo Zi-Jun, Lan Xiao, Sun Bao-Qing
BACKGROUND: With the rising prevalence of allergic rhinitis, the utility of indoor environmental management deserves increasing scrutiny. This research aims at evaluating the ability of air purifiers to be a therapy of allergic rhinitis. METHODS: 32 subjects (25±13.5 years old) diagnosed with allergic rhinitis were selected and HEPA air purifiers placed in their bedrooms for 4 months. Before the intervention and each month, dust samples were collected with a vacuum cleaner and the dust collector assessed for allergen content...
March 12, 2018: Asian Pacific Journal of Allergy and Immunology
Nathalie Thomas, Umberto D'Ortona
In a dry granular flow, size segregation had been shown to behave differently for a mixture containing a few large particles with a size ratio above 5 [N. Thomas, Phys. Rev. E 62, 961 (2000)1063-651X10.1103/PhysRevE.62.961]. For moderately large size ratios, large particles migrate to an intermediate depth in the bed: this is called "intermediate segregation." For the largest size ratios, large particles migrate down to the bottom of the flow: this is called "reverse segregation," in contrast with surface segregation...
February 2018: Physical Review. E
Robert Foerster, B C John Cho, Daniel K Fahim, Peter C Gerszten, John C Flickinger, Inga S Grills, Maha S Jawad, C Ronald Kersh, Daniel Létourneau, Frederick Mantel, Arjun Sahgal, John H Shin, Brian A Winey, Matthias Guckenberger
BACKGROUND: Stereotactic body radiotherapy (SBRT) of the spine provides superior tumor control, but vertebral compression fractures are increased and the pathophysiological process underneath is not well understood. Data on histopathological changes, particularly after salvage SBRT (sSBRT) following conventional irradiation, are scarce. OBJECTIVE: To investigate surgical specimens after sSBRT and primary SBRT (pSBRT) regarding histopathological changes. METHODS: We assessed 704 patients treated with spine SBRT 2006 to 2012...
March 14, 2018: Neurosurgery
Jianliang Sun, Lianghai Li, Guangying Zhou, Xue Wang, Liang Zhang, Yueping Liu, Jierui Yang, Xianghong Lü, Feng Jiang
The conventional flue gas treatment technologies require high capital investments and chemical costs, which limit their application in industrial sectors. This study developed a sulfur-cycling technology to integrate sulfide production by biological sulfur reduction and simultaneous catalytic desulfurization and denitrification with H2 S (H2 S-SCDD) for flue gas treatment and sulfur recovery. In a packed bed reactor, high-rate sulfide production (1.63 ± 0.16 kg S/m3 -d) from biological sulfur reduction was achieved using organics in wastewater as electron donors at pH around 5...
March 16, 2018: Environmental Science & Technology
Benjamin H Goot, Jon Kaufman, Zhaoxing Pan, David W A Bourne, Francis Hickey, Mark Twite, Jeffrey Galinkin, Uwe Christians, Jeannie Zuk, Eduardo M da Cruz
OBJECTIVES: To assess if morphine pharmacokinetics are different in children with Down syndrome when compared with children without Down syndrome. DESIGN: Prospective single-center study including subjects with Down syndrome undergoing cardiac surgery (neonate to 18 yr old) matched by age and cardiac lesion with non-Down syndrome controls. Subjects were placed on a postoperative morphine infusion that was adjusted as clinically necessary, and blood was sampled to measure morphine and its metabolites concentrations...
March 15, 2018: Pediatric Critical Care Medicine
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