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https://www.readbyqxmd.com/read/29331909/linking-composition-of-extracellular-polymeric-substances-eps-to-the-physical-structure-and-hydraulic-resistance-of-membrane-biofilms
#1
Peter Desmond, James P Best, Eberhard Morgenroth, Nicolas Derlon
The effect of extracellular polymeric substances (EPS) on the meso-scale physical structure and hydraulic resistance of membrane biofilms during gravity driven membrane (GDM) filtration was investigated. Biofilms were developed on the surface of ultrafiltration membranes during dead-end filtration at ultra-low pressure (70 mbar). Biofilm EPS composition (total protein, polysaccharide and eDNA) was manipulated by growing biofilms under contrasting nutrient conditions. Nutrient conditions consisted of (i) a nutrient enriched condition with a nutrient ratio of 100:30:10 (C: N: P), (ii) a phosphorus limitation (C: N: P ratio: 100:30:0), and (iii) a nitrogen limitation (C: N: P ratio: 100:0:10)...
December 27, 2017: Water Research
https://www.readbyqxmd.com/read/29315527/modeling-semicontinuous-longitudinal-expenditures-a-practical-guide
#2
Valerie A Smith, Matthew L Maciejewski, Maren K Olsen
OBJECTIVE: To compare different strategies for analyzing longitudinal expenditure data that have a point mass at $0. We provide guidance on parameter interpretation, research questions, and model selection. DATA SOURCES, STUDY DESIGN, AND DATA COLLECTION: One-part models, uncorrelated two-part models, correlated conditional two-part (CTP) models, and correlated marginalized two-part (MTP) models have been proposed for longitudinal expenditures that often exhibit a large proportion of zeros and a distribution of continuous, highly right-skewed positive values...
January 8, 2018: Health Services Research
https://www.readbyqxmd.com/read/29278784/elucidating-the-biogeographical-variation-of-the-venom-of-naja-naja-spectacled-cobra-from-pakistan-through-a-venom-decomplexing-proteomic-study
#3
Kin Ying Wong, Choo Hock Tan, Kae Yi Tan, Quraishi H Naeem, Nget Hong Tan
Naja naja is a medically important species that is distributed widely in South Asia. Its venom lethality and neutralization profile have been reported to vary markedly, but the understanding of this phenomenon has been limited without a comprehensive venom profile for the Pakistani N. naja. This study set to investigate the venom proteome of Pakistani N. naja applying reverse-phase HPLC, SDS-PAGE, mass spectrometry and data-mining approaches. The venom enzymatics and antigen binding activities were also studied...
December 23, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29244607/a-survey-of-risk-factors-for-digit-injuries-among-dogs-training-and-competing-in-agility-events
#4
Debra C Sellon, Katherine Martucci, John R Wenz, Denis J Marcellin-Little, Michelle Powers, Kimberley L Cullen
OBJECTIVE To identify potential risk factors for digit injuries in dogs training and competing in agility events. DESIGN Internet-based, retrospective, cross-sectional survey. ANIMALS 1,081 dogs training or competing in agility events. PROCEDURES Data were collected for eligible animals via retrospective surveys distributed electronically to handlers of dogs participating in agility-related activities. Variables evaluated included demographic (handlers) and signalment (dogs) information, physical characteristics of dogs, and injury characteristics...
January 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29226883/deep-vein-thrombosis-prophylaxis-are-we-overdoing-an-asian-survey-on-trends-in-bariatric-surgery-with-a-systematic-review-of-literature
#5
Siddhartha Bhattacharya, S Saravana Kumar, Parimala Devi Kumara Swamy, C Palanivelu, P Praveen Raj
BACKGROUND: Obesity is a risk factor for deep vein thrombosis (DVT) and venous thromboembolism (VTE). VTE is the most common cause of mortality in patients undergoing bariatric surgery. There is considerable variation in practice regarding methods, dosages and duration of prophylaxis in this patient population. Most of the literature is based on Western patients and specific guidelines for Asians do not exist. METHODS: We conducted a web-based survey amongst 11 surgeons from high-volume centres in Asia regarding their DVT prophylaxis measures in patients undergoing bariatric surgery...
December 11, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/29224637/valve-hemodynamic-deterioration-and-cardiovascular-outcomes-in-tavr-a-report-from-the-sts-acc-tvt-registry
#6
MULTICENTER STUDY
Sreekanth Vemulapalli, David R Holmes, David Dai, Roland Matsouaka, Michael J Mack, Fred L Grover, Raj R Makkar, Vinod H Thourani, Pamela S Douglas
BACKGROUND: Recent reports of leaflet abnormalities (detected using advanced imaging) have raised questions regarding transcatheter aortic valve replacement (TAVR) durability. We sought to determine the incidence of valve hemodynamic deterioration (VHD) and its association with cardiovascular outcomes. METHODS AND RESULTS: Consecutive cases with paired postimplant and follow-up echocardiograms from November 2011 to March 2015 in the STS/ACC TVT Registry were allocated into 2 overlapping cohorts: early (paired echocardiograms at 0 and 30 days) and late (paired echocardiograms at 30 days and 1 year)...
January 2018: American Heart Journal
https://www.readbyqxmd.com/read/29223720/serum-periostin-is-associated-with-body-mass-index-and-allergic-rhinitis-in-healthy-and-asthmatic-subjects
#7
Hirokazu Kimura, Satoshi Konno, Hironi Makita, Natsuko Taniguchi, Hiroki Kimura, Houman Goudarzi, Kaoruko Shimizu, Masaru Suzuki, Noriharu Shijubo, Katsunori Shigehara, Junya Ono, Kenji Izuhara, Yoichi Minagawa Ito, Masaharu Nishimura
BACKGROUND: Many studies have attempted to clarify the factors associated with serum periostin levels in asthmatic patients. However, these results were based on studies of subjects mainly characterized by high eosinophil counts, which may present as an obstacle for clarification in the identification of other factors associated with serum periostin levels. The aim of this study was to determine the factors associated with serum periostin levels in healthy subjects. We also assessed some factors in asthmatic subjects to confirm their extrapolation for management of asthma...
December 6, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29218883/tree-based-methods-for-characterizing-tumor-density-heterogeneity
#8
Katherine Shoemaker, Brian P Hobbs, Karthik Bharath, Chaan S Ng, Veerabhadran Baladandayuthapani
Solid lesions emerge within diverse tissue environments making their characterization and diagnosis a challenge. With the advent of cancer radiomics, a variety of techniques have been developed to transform images into quantifiable feature sets producing summary statistics that describe the morphology and texture of solid masses. Relying on empirical distribution summaries as well as grey-level co-occurrence statistics, several approaches have been devised to characterize tissue density heterogeneity. This article proposes a novel decision-tree based approach which quantifies the tissue density heterogeneity of a given lesion through its resultant distribution of tree-structured dissimilarity metrics computed with least common ancestor trees under repeated pixel re-sampling...
2018: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/29215968/food-flows-in-the-uk-the-potential-of-surplus-food-redistribution-to-reduce-waste
#9
Elisa Facchini, Eleni Iacovidou, Jan Gronow, Nikolaos Voulvoulis
The increasing amount of food waste generated as a direct consequence of its excessive production, mismanagement and wasteful behaviours, represents a real challenge in promoting resource efficiency. In the UK, the lack of robust mass flow data hinders both the ability to understand and address food waste challenges, and to devise long-term sustainable prevention strategies. In recognition of these challenges, this paper seeks to: i) provide insights into the UK's annual estimates of food mass flows, including imports, exports, distribution, consumption, surplus food production, and final disposal, and ii) scrutinise the uptake and surplus food redistribution as a potential food waste prevention strategy...
December 7, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/29210790/management-of-1-lung-ventilation-variation-and-trends-in-clinical-practice-a-report-from-the-multicenter-perioperative-outcomes-group
#10
Douglas A Colquhoun, Bhiken I Naik, Marcel E Durieux, Amy M Shanks, Sachin Kheterpal, S Patrick Bender, Randal S Blank
BACKGROUND: Lung-protective ventilation (LPV) has been demonstrated to improve clinical outcomes in surgical patients. There are very limited data on the current use of LPV for patients undergoing 1-lung ventilation (1LV) despite evidence that 1LV may be a particularly important setting for its use. In this multicenter study, we report trends in ventilation practice for patients undergoing 1LV. METHODS: The Multicenter Perioperative Outcomes Group database was used to identify patients undergoing 1LV...
November 22, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29205707/massed-versus-spaced-practice-in-vocology-effect-of-a-short-term-intensive-voice-training-versus-a-longer-term-traditional-voice-training
#11
Iris Meerschman, Kristiane Van Lierde, Caro Van Puyvelde, Astrid Bostyn, Sofie Claeys, Evelien D'haeseleer
BACKGROUND: In contrast with most medical and pharmaceutical therapies, the optimal dosage for voice therapy or training is unknown. AIMS: The aim of this study was to compare the effect of a short-term intensive voice training (IVT) with a longer-term traditional voice training (TVT) on the vocal quality and vocal capacities of vocally healthy non-professional voice users. METHODS & PROCEDURES: A pre-/post-test randomized control group design with follow-up measurements was used...
December 5, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29202080/a-practical-approach-for-scaling-up-the-alternative-strategy-for-the-elimination-of-lymphatic-filariasis-in-loa-loa-endemic-countries-developing-an-action-plan
#12
Louise A Kelly-Hope, Michelle C Stanton, Honorat G M Zouré, Boniface E Kinvi, Alexei Mikhailov, Afework Tekle, Jonathan D King
Background: Lymphatic filariasis (LF) is a vector-borne parasitic disease that is being targeted for elimination through mass drug administration (MDA). The co-distribution of Loa loa in Central Africa poses a significant barrier to the expansion of the MDA due to risk of severe adverse events (SAEs) associated with the drug ivermectin that is routinely used. National LF programmes are yet to significantly scale up in co-endemic areas and need a practical approach to make preliminary decisions based on the mapping status and potential treatment strategies...
2017: Global Health Research and Policy
https://www.readbyqxmd.com/read/29177608/identification-of-educational-gaps-among-oncologists-who-manage-patients-with-pancreatic-cancer
#13
Justin A Barnes, Melissa L Ellis, Sharon Hwang, Joan Emarine, Patti Merwin, Gregory D Salinas, Benjamin L Musher
INTRODUCTION: Pancreatic ductal adenocarcinoma (PDA) is associated with poor outcomes and presents oncologists with a myriad of clinical challenges. This study was conducted to assess oncologists' practice patterns and to identify the greatest areas of need for future PDA continuing medical education (CME) programs. METHODS: Case vignettes have been validated as an effective tool to assess how physicians approach and treat a wide array of diseases. In order to assess practice patterns for resectable, locally advanced unresectable, and metastatic PDA, an online case vignette survey was distributed to practicing medical oncologists...
November 27, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29174894/disruption-of-perceptual-learning-by-a-brief-practice-break
#14
David F Little, Yu-Xuan Zhang, Beverly A Wright
Some forms of associative learning require only a single experience to create a lasting memory [1, 2]. In contrast, perceptual learning often requires extensive practice within a day for performance to improve across days [3, 4]. This suggests that the requisite practice for durable perceptual learning is integrated throughout each day. If the total amount of daily practice is the only important variable, then a practice break within a day should not disrupt across-day improvement. To test this idea, we trained human listeners on an auditory frequency-discrimination task over multiple days and compared the performance of those who engaged in a single continuous practice session each day [4] with those who were given a 30-min break halfway through each practice session...
November 21, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29173466/nutritional-management-can-assist-a-significant-role-in-alleviation-of-arsenicosis
#15
REVIEW
Abha Sharma, S J S Flora
Consumption of arsenic contaminated water causes serious skin disease and cancer in a significant number of exposed people. Chelating agents, consider an expensive therapy, are employed in the treatment of arsenic intoxication. There are reports which suggest that the poorest suffer the most from arsenicosis. This may be due to improper diet intake, consist of low protein and micronutrients which increase the vulnerability to arsenic-related disorders. Several human studies demonstrated the associations between malnourishment and the development of arsenic-caused skin lesions, skin cancer and cardiovascular effects...
January 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29120807/residual-behavior-and-risk-assessment-of-tridemorph-in-banana-conditions
#16
Siwei Wang, Haibin Sun, Yanping Liu
An efficient method has been developed for determining tridemorph in banana using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The dissipation and terminal residue of tridemorph in banana fields were carried out at good agricultural practice (GAP) conditions. The average recoveries ranged from 84.4% to 90.0% with relative standard deviations (RSDs) of 3.0%-7.0% at three different spiking levels. The results indicated that the tridemorph dissipated quickly in banana with half-lives of 7...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29100924/a-practical-method-to-calculate-the-r1-index-of-waste-to-energy-facilities
#17
Federico Viganò
According to Directive 98/2008/EC, the operation carried out by an incinerator of Municipal Solid Waste (MSW) is classified either as energy recovery (R1) or as disposal (D10) depending on the result achieved by the application of the R1 formula. In 2011 the DG Environment of the European Commission (EC) issued some non-binding guidelines on the interpretation of such a formula that clarified many aspects related to its application. A point not fully clarified by the EC guidelines is the determination of the energy contained in the treated waste (EW)...
October 31, 2017: Waste Management
https://www.readbyqxmd.com/read/29093827/obesity-in-individuals-with-schizophrenia-a-case-controlled-study-in-scotland
#18
Isobel M Cameron, Ross J Hamilton, Gordon Fernie, Stephen A MacGillivray
Background: Despite extensive clinical concern about rates of obesity in patients with schizophrenia, there is little evidence of the extent of this problem at a population level. Aims: To estimate levels of obesity in a national population sample by comparing patients with schizophrenia with matched controls. Method: We calculated levels of obesity for each patient with schizophrenia from the national Primary Care Clinical Informatics Unit database (n=4658) matched with age, gender and neighbourhood controls...
September 2017: BJPsych Open
https://www.readbyqxmd.com/read/29091684/extending-the-applicability-of-the-four-flux-radiative-transfer-method
#19
Marc A Gali, Angus R Gentle, Matthew D Arnold, Geoffrey B Smith
A generalized four-flux method capable of modeling and tuning the spectral reflectance of a diverse range of complex composite coatings is presented. An example application is exploring and maximizing the visible and near-infrared (IR) spectral reflectance available from the diverse structures arising from combinations of the many practical paint ingredients that are available or can be made when applied to different substrates. This requires consideration of scatterers that can differ in composition, particle size, size distribution, and fill factor, and are held in place by a variety of organic binders, which typically partially absorb in the near IR...
November 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29029619/malaria-prevalence-prevention-and-treatment-seeking-practices-among-nomadic-pastoralists-in-northern-senegal
#20
Mame Cheikh Seck, Julie Thwing, Fatou Ba Fall, Jules Francois Gomis, Awa Deme, Yaye Die Ndiaye, Rachel Daniels, Sarah K Volkman, Medoune Ndiop, Mady Ba, Daouda Ndiaye
BACKGROUND: Malaria transmission in Senegal is highly stratified, from low in the dry north to moderately high in the moist south. In northern Senegal, along the Senegal River Valley and in the Ferlo semi-desert region, annual incidence is less than five cases per 1000 inhabitants. Many nomadic pastoralists have permanent dwellings in the Ferlo Desert and Senegal River Valley, but spend dry season in the south with their herds, returning north when the rains start, leading to a concern that this population could contribute to ongoing transmission in the north...
October 13, 2017: Malaria Journal
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