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https://www.readbyqxmd.com/read/28735204/developing-an-ecosystem-model-of-a-floating-wetland-for-water-quality-improvement-on-a-stormwater-pond
#1
Brendan McAndrew, Changwoo Ahn
An ecosystem model was developed to assist with designing and implementing a floating wetland (FW) for water quality management of urban stormwater ponds, focusing on nitrogen (N) removal. The model is comprised of three linked submodels: hydrology, plant growth, and nitrogen. The model was calibrated with the data that resulted from a FW constructed and implemented as part of an interdisciplinary pedagogical project on a university campus, titled "The Rain Project", which raised awareness of stormwater issues while investigating the potential application of green infrastructure for sustainable stormwater management...
July 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28735203/grape-stalk-application-for-caffeine-removal-through-adsorption
#2
Rodrigo Portinho, Odivan Zanella, Liliana Amaral Féris
Concern over emerging pollutants presence in water resources is growing, justifying the search for alternative or additional techniques to those applied in conventional water treatment processes. Use of adsorption with agricultural wastes directly as adsorbents or as precursors for activated carbon synthesis is a viable method, combining removal efficiency, low cost and biodegradability of the material applied. This study investigated the employability of grape stalk, a waste from grape industrialization process without effective use, in caffeine removal from aqueous solution...
July 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28734966/development-of-new-ganglioside-probes-and-unraveling-of-raft-domain-structure-by-single-molecule-imaging
#3
REVIEW
Kenichi G N Suzuki, Hiromune Ando, Naoko Komura, Takahiro Fujiwara, Makoto Kiso, Akihiro Kusumi
Gangliosides are involved in a variety of biological roles and are a component of lipid rafts found in cell plasma membranes (PMs). Gangliosides are especially abundant in neuronal PMs and are essential to their physiological functions. However, the dynamic behaviors of gangliosides have not been investigated in living cells due to a lack of fluorescent probes that behave like their parental molecules. We have recently developed, using an entirely chemical method, four new ganglioside probes (GM1, GM2, GM3, and GD1b) that act similarly to their parental molecules in terms of raft partitioning and binding affinity...
July 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28734209/new-insight-into-the-environmental-impact-of-two-imidazolium-ionic-liquids-effects-on-seed-germination-and-soil-microbial-activity
#4
J Salgado, J J Parajó, T Teijeira, O Cruz, J Proupín, M Villanueva, J A Rodríguez-Añón, P V Verdes, O Reyes
The next generation of ionic liquids must be synthetized taking into account structures that guarantee the suitable properties for a defined application as well as ecological data. Thus, searching of the right methodologies to know, quickly and efficiently, the ecological effects of these compounds is a preliminary task. The effects of two imidazolium based ionic liquids with different anions, 1-butyl-3-methylimidazolium tetrafluoroborate, [C4C1Im][BF4], and 1-propyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C3C1Im][NTf2], on seedling emergence of six tree species and on the microbial behaviour of two soils were determined in this work...
July 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28731602/accuracy-and-precision-of-estimation-equations-to-predict-net-endogenous-acid-excretion-using-the-australian-food-database
#5
Benjamin H Parmenter, Gary J Slater, Lynda A Frassetto
AIM: The gold standard of measurement for net endogenous acid production (NEAP) is net acid excretion (NAE), a test that is not readily available, and consequently, estimative equations by Remer and Manz and Frassetto et al. are often used. These equations rely on nutrient databases and it is recommended that their validity be assessed using a country's database before their application in research in that country. We sought to delineate the accuracy and precision of these estimation equations using the Australian food database...
July 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28730802/sensing-single-molecule-penetration-into-nanopores-pushing-the-time-resolution-to-the-diffusion-limit
#6
Igor Bodrenko, Jiajun Wang, Samuele Salis, Mathias Winterhalter, Matteo Ceccarelli
To quantify small molecule penetration into and eventually permeation through nanopores, we applied an improved excess-noise analysis of the ion current fluctuation caused by entering molecules. The kinetic parameters of substrate entry and leave are derived from a two-state Markov model, analyzing the substrate concentration depen- dence of the average ion current and its variance. Including filter corrections allows one to detect the transition rates beyond the cutoff frequency, fc, of the instrumental ion-current filter...
July 21, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28729188/assessing-interest-and-barriers-for-resident-and-faculty-involvement-in-global-surgery
#7
Maija Cheung, James M Healy, Michael R Hall, Doruk Ozgediz
BACKGROUND: Multiple institutions have developed international electives and sustainable global surgery initiatives to facilitate clinical, research, and outreach opportunities with hospitals in resource-poor areas. Despite increasing interest among programs, many institutions have not successfully reached potential involvement. OBJECTIVE: This study evaluates the experiences of Yale residents and faculty, measures interest in the development of an international surgical elective, and enumerates barriers to developing or participating in these opportunities...
July 17, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28727548/mr-ntd-manifold-regularization-nonnegative-tucker-decomposition-for-tensor-data-dimension-reduction-and-representation
#8
Xutao Li, Michael K Ng, Gao Cong, Yunming Ye, Qingyao Wu
With the advancement of data acquisition techniques, tensor (multidimensional data) objects are increasingly accumulated and generated, for example, multichannel electroencephalographies, multiview images, and videos. In these applications, the tensor objects are usually nonnegative, since the physical signals are recorded. As the dimensionality of tensor objects is often very high, a dimension reduction technique becomes an important research topic of tensor data. From the perspective of geometry, high-dimensional objects often reside in a low-dimensional submanifold of the ambient space...
August 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28722175/how-the-community-shapes-unmet-need-for-modern-contraception-an-analysis-of-44-demographic-and-health-surveys
#9
Nicholas Metheny, Rob Stephenson
Unmet need for modern contraception is a major public health concern in resource-constrained countries. Recent research supports the application of social-ecological theories to explain how characteristics of a woman's community shape modern contraception use. However, this research focuses largely on individual countries and uses a limited number of community-level effects. We fitted three random-effects logistic regression models to examine associations between 13 community-level variables and the odds of reporting unmet need, unmet need for spacing, and unmet need for limiting for all parous, female respondents in 44 DHS surveys collected in 2010-2015 (n=528,101)...
July 19, 2017: Studies in Family Planning
https://www.readbyqxmd.com/read/28720873/bulk-vs-surface-structure-of-3d-metal-impurities-in-topological-insulator-bi2te3
#10
B Leedahl, D W Boukhvalov, E Z Kurmaev, A Kukharenko, I S Zhidkov, N V Gavrilov, S O Cholakh, P Huu Le, C Wei Luo, A Moewes
Topological insulators have become one of the most prominent research topics in materials science in recent years. Specifically, Bi2Te3 is one of the most promising for technological applications due to its conductive surface states and insulating bulk properties. Herein, we contrast the bulk and surface structural environments of dopant ions Cr, Mn, Fe, Co, Ni, and Cu in Bi2Te3 thin films in order to further elucidate this compound. Our measurements show the preferred oxidation state and surrounding crystal environment of each 3d-metal atomic species, and how they are incorporated into Bi2Te3...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719033/identification-of-driver-copy-number-alterations-in-diverse-cancer-types-and-application-in-drug-repositioning
#11
Wenbin Zhou, Zhangxiang Zhao, Ruiping Wang, Yue Han, Chengyu Wang, Fan Yang, Ya Han, Haihai Liang, Lishuang Qi, Chenguang Wang, Zheng Guo, Yunyan Gu
Results from numerous studies suggest an important role for somatic copy number alterations (SCNAs) in cancer progression. Our work aimed to identify the drivers (oncogenes or tumor suppressor genes) that reside in recurrently aberrant genomic regions, including a large number of genes or non-coding genes, which remain a challenge for decoding the SCNAs involved in carcinogenesis. Here, we propose a new approach to comprehensively identify drivers, using 8740 cancer samples involving 18 cancer types from The Cancer Genome Atlas (TCGA)...
July 18, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28718019/neonatal-placental-and-umbilical-cord-blood-parameters-in-pregnant-women-residing-in-areas-with-intensive-pesticide-application
#12
María Martha Quintana, Berta Vera, Gladis Magnarelli, Natalia Guiñazú, María Gabriela Rovedatti
In rural populations, the proximity to areas with intensive pesticide application represents a risk factor of xenobiotic exposure. Here, we investigated whether newborns born to mothers residing in an area with intensive pesticide application show alterations in placental and neonatal morphometric standards, umbilical cord blood (UCB) biochemical parameters, and/or biomarkers related to oxidative stress and oxidative damage. Samples were collected from 151 healthy pregnant women residing in a rural area (rural group; RG) during the pesticide spraying (SS) and nonspraying (NSS) seasons, as well as from women from an urban population (control group; CG), and grouped according to the delivery type (vaginal or cesarean)...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28717344/biomaterials-for-4d-stem-cell-culture
#13
Amber M Hilderbrand, Elisa M Ovadia, Matthew S Rehmann, Prathamesh M Kharkar, Chen Guo, April M Kloxin
Stem cells reside in complex three-dimensional (3D) environments within the body that change with time, promoting various cellular functions and processes such as migration and differentiation. These complex changes in the surrounding environment dictate cell fate yet, until recently, have been challenging to mimic within cell culture systems. Hydrogel-based biomaterials are well suited to mimic aspects of these in vivo environments, owing to their high water content, soft tissue-like elasticity, and often-tunable biochemical content...
August 2016: Current Opinion in Solid State & Materials Science
https://www.readbyqxmd.com/read/28716613/a-novel-use-of-peer-coaching-to-teach-primary-palliative-care-skills-coaching-consultation
#14
Juliet Jacobsen, Corrine Alexander-Cole, Bethany-Rose Daubman, Dejani Banerji, Joe Greer, Karen o'Brien, Kathleen Doyle, Vicki Jackson
BACKGROUND: We aim to address palliative care workforce shortages by teaching clinicians how to provide primary palliative care through peer coaching. INTERVENTION: We offered peer coaching to internal medicine residents and hospitalists (attendings, nurse practioners, and physician assistants). MEASUREMENTS: An audit of peer coaching encounters and coachee feedback to better understand the applicability of peer coaching in the inpatient setting to teach primary palliative care...
July 14, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28715262/sexting-behaviors-exhibited-by-men-who-have-sex-with-men-between-the-ages-of-18-70-who-live-in-a-socially-conservative-state
#15
Joseph M Currin, Randolph D Hubach
Sexting, defined as the sending and receiving of sexually suggestive or sexually explicit text or photos, has been growing in prevalence. Recent studies have demonstrated that over half of individuals sampled over 17 and regardless of gender participate in some type of sexting behavior. Most studies on sexting behaviors, including those looking at men who have sex with men (MSM) focus on emerging adult or university-based populations. The goal of the current study was to sample a nonuniversity-based MSM adult population to determine the prevalence of sexting behavior and the odds that a person engages in sexting behaviors based on certain sexual behaviors...
July 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/28715203/a-bioinorganic-approach-to-fragment-based-drug-discovery-targeting-metalloenzymes
#16
Seth M Cohen
Metal-dependent enzymes (i.e., metalloenzymes) make up a large fraction of all enzymes and are critically important in a wide range of biological processes, including DNA modification, protein homeostasis, antibiotic resistance, and many others. Consequently, metalloenzymes represent a vast and largely untapped space for drug development. The discovery of effective therapeutics that target metalloenzymes lies squarely at the interface of bioinorganic and medicinal chemistry and requires expertise, methods, and strategies from both fields to mount an effective campaign...
July 17, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28714742/application-of-the-european-quality-indicators-for-psychosocial-dementia-care-in-long-term-care-facilities-in-the-asia-pacific-region-a-pilot-study
#17
Yun-Hee Jeon, Wai Tong Chien, Ju-Young Ha, Rahimah Ibrahim, Belinda Kirley, Lay Ling Tan, Papan Thaipisuttikul, Emmelyne Vasse, Myrra Vernooij-Dassen, Huali Wang, Jong-Chul Youn, Henry Brodaty
OBJECTIVES: An Asia-Pacific regional collaboration group conducted its first multi-country research project to determine whether or not European quality indicators (QIs) for psychosocial care in dementia could be implemented as a valid tool in residential aged care across seven Asia-Pacific sites (Australia, Hong Kong Special Administrative Region, Mainland China, Malaysia, Singapore, South Korea, and Thailand). METHOD: Following the European QI protocol, auditing and data extraction of medical records of consenting residents with dementia were conducted by trained auditors with relevant health care backgrounds...
July 17, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28714576/metal-organic-framework-derived-feco-n-doped-hollow-porous-carbon-nanocubes-for-electrocatalysis-in-acidic-and-alkaline-media
#18
Xinzuo Fang, Long Jiao, Shu-Hong Yu, Hai-Long Jiang
Metal-organic frameworks (MOFs) are ideal precursors/ templates for porous carbons with homogeneous doping of active components for energy storage and conversion applications. Herein, metalloporphyrinic MOFs, PCN-224-FeCo, with adjustable molar ratio of Fe(II) /Co(II) alternatively residing inside the porphyrin center, were employed as precursors to afford FeCo-N-doped porous carbon (denoted as FeCo-NPC) by pyrolysis. Thanks to the hollow porous structure, the synergetic effect between highly dispersed FeNx and CoNx active sites accompanied with a high degree of graphitization, the optimized FeCo2 -NPC-900 obtained by pyrolysis at 900 °C exhibits more positive half-wave potential, higher diffusion-limited current density, and better stability than the state-of-the-art Pt/C, under both alkaline and acidic media...
July 17, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28714544/otolaryngology-externships-and-the-match-productive-or-futile
#19
Carissa M Thomas, Cristina Cabrera-Muffly
OBJECTIVES/HYPOTHESIS: The objectives of this study were to summarize externship experiences among recent graduates and current residents in otolaryngology residency programs and determine whether externships affect the match process. STUDY DESIGN: Cross-sectional survey. METHODS: A survey was distributed to otolaryngology residents in allopathic US residency programs and otolaryngology graduates from the past 5 years (2011-2015). There were 2,141 surveys distributed...
July 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28713807/the-development-of-a-postgraduate-orthopaedic-manual-therapy-residency-program-in-nairobi-kenya
#20
Shala Cunningham, Richard Jackson, Daniel Kangutu Muli, Joni McFelea
INTRODUCTION: There are very few opportunities for long-term, comprehensive postgraduate education in developing countries because of fiscal and human resource constraints. Therefore, physiotherapists have little opportunity following graduation to advance their skills through the improvement of clinical reasoning and treatment planning and application. BACKGROUND: To address the need for sustainable advanced instruction in physiotherapy within the country, a postgraduate Residency program was initiated in Nairobi, Kenya in 2012...
2017: Frontiers in Public Health
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