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https://www.readbyqxmd.com/read/29793172/on-the-autonomous-motion-of-active-drops-or-bubbles
#1
Yuri S Ryazantsev, Manuel G Velarde, Eduardo Guzman, Ramón G Rubio, Francisco Ortega, Juan-Jose Montoya
Thermo-capillary stresses on the surface of a drop can be the result of a non-isothermal surface chemical conversion of a reactant dissolved in the host fluid. The strength of heat production (with e.g. absorption) on the surface is ruled by the diffusion of the reactant and depends on the state of motion of the drop. Such thermo-capillary stresses can provoke the motion of the drop or its motionless state in the presence of an external body force. If in the balance of forces, including indeed viscous drag, the net resultant force vanishes there is the possibility of autonomous motion with constant velocity of the drop...
May 19, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29793107/biofiltration-of-methane-using-hybrid-mixtures-of-biochar-lava-rock-and-compost
#2
Helen La, J Patrick A Hettiaratchi, Gopal Achari, Tobin J Verbeke, Peter F Dunfield
Using hybrid packing materials in biofiltration systems takes advantage of both the inorganic and organic properties offered by the medium including structural stability and a source of available nutrients, respectively. In this study, hybrid mixtures of compost with either lava rock or biochar in four different mixture ratios were compared against 100% compost in a methane biofilter with active aeration at two ports along the height of the biofilter. Biochar outperformed lava rock as a packing material by providing the added benefit of participating in sorption reactions with CH4 ...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793067/performance-and-methane-fermentation-characteristics-of-a-pilot-scale-anaerobic-membrane-bioreactor-anmbr-for-treating-pharmaceutical-wastewater-containing-m-cresol-mc-and-iso-propyl-alcohol-ipa
#3
Zhaobo Chen, Xue Li, Dongxue Hu, Yubo Cui, Fuguang Gu, Fuquan Jia, Tingting Xiao, Haiyan Su, Jiao Xu, Haixu Wang, Pan Wu, Ying Zhang, Na Jiang
In this study, a pilot scale anaerobic membrane bioreactor (AnMBR) was operated for 80 days to treat pharmaceutical wastewater containing m-cresol (MC) and iso-propyl alcohol (IPA). The aim of the study is to investigate the performance and methane fermentation characteristics of AnMBR at different hydraulic retention time (HRT) (48, 36, 24, 18 and 12 h). The average total removal efficiencies of MC and IPA were 95%, 96% during the 80 days, which demonstrated that the AnMBR system performed well in the MC and IPA removal...
May 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29792880/molecular-alterations-during-larval-development-of-haemonchus-contortus-in-vitro-are-under-tight-post-transcriptional-control
#4
Guangxu Ma, Tao Wang, Pasi K Korhonen, Ching-Seng Ang, Nicholas A Williamson, Neil D Young, Andreas J Stroehlein, Ross S Hall, Anson V Koehler, Andreas Hofmann, Robin B Gasser
In this study, we explored the molecular alterations in the developmental switch from the L3 to the exsheathed L3 (×L3) and to the L4 stage of Haemonchus contortus in vitro using an integrated transcriptomic, proteomic and bioinformatic approach. Totals of 9,754 mRNAs, 88 microRNAs (miRNAs) and 1,591 proteins were identified, and 6,686 miRNA-mRNA pairs inferred in all larval stages studied. Approximately 16% of transcripts in the combined transcriptome (representing all three larval stages) were expressed as proteins, and there were positive correlations (r = 0...
May 22, 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29792774/when-the-good-looks-bad-an-experimental-exploration-of-the-repulsion-effect
#5
Mikhail S Spektor, David Kellen, Jared M Hotaling
When people are choosing among different options, context seems to play a vital role. For instance, adding a third option can increase the probability of choosing a similar dominating option. This attraction effect is one of the most widely studied phenomena in decision-making research. Its prevalence, however, has been challenged recently by the tainting hypothesis, according to which the inferior option contaminates the attribute space in which it is located, leading to a repulsion effect. In an attempt to test the tainting hypothesis and explore the conditions under which dominated options make dominating options look bad, we conducted four preregistered perceptual decision-making studies with a total of 301 participants...
May 1, 2018: Psychological Science
https://www.readbyqxmd.com/read/29792442/the-case-against-specialized-visual-spatial-short-term-memory
#6
Candice C Morey
The dominant paradigm for understanding working memory, or the combination of the perceptual, attentional, and mnemonic processes needed for thinking, subdivides short-term memory (STM) according to whether memoranda are encoded in aural-verbal or visual formats. This traditional dissociation has been supported by examples of neuropsychological patients who seem to selectively lack STM for either aural-verbal, visual, or spatial memoranda, and by experimental research using dual-task methods. Though this evidence is the foundation of assumptions of modular STM systems, the case it makes for a specialized visual STM system is surprisingly weak...
May 24, 2018: Psychological Bulletin
https://www.readbyqxmd.com/read/29792308/logical-modelling-uncovers-developmental-constraints-for-primary-sex-determination-of-chicken-gonads
#7
Lucas Sánchez, Claudine Chaouiya
In the chicken, sex determination relies on a ZZ (male)/ZW (female) chromosomal system, but underlying mechanisms are still not fully understood. The Z-dosage and the dominant W-chromosome hypotheses have been proposed to underlie primary sex determination. We present a modelling approach, which assembles the current knowledge and permits exploration of the regulation of this process in chickens. Relying on published experimental data, we assembled a gene network, which led to a logical model that integrates both the Z-dosage and dominant W hypotheses...
May 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29792256/uncaring-nurses-mobilizing-power-knowledge-difference-and-resistance-to-explain-workplace-violence-in-academia
#8
Renee Berquist, Isabelle St-Pierre, Dave Holmes
BACKGROUND AND PURPOSE: Violence among nurses and in nursing academia is a significant issue, with attention increasingly focused on damage resulting from psychological violence, such as bullying, harassment, aggression, and incivility. Each workplace's interpretation of violence will impact individual behavior within the organization. Organizational and environmental factors can contribute to violent behaviors becoming normalized in the workplace. When violent behaviors go unconstrained, they become imbedded within the workplace culture...
May 1, 2018: Research and Theory for Nursing Practice
https://www.readbyqxmd.com/read/29792206/is-the-cup-orientation-different-in-bilateral-total-hip-arthroplasty-with-right-handed-surgeons-using-posterolateral-approach
#9
Xinggui Song, Ming Ni, Heng Li, Xin Li, Xiang Li, Jun Fu, Jiying Chen
BACKGROUND: The impact of surgeon handedness on acetabular cup orientation in total hip arthroplasty (THA) is not well studied. The aim of our study is to investigate the difference of cup orientation in bilateral THA performed by right-handed surgeons using posterolateral approach and which cup could be fitter to Lewinneck's safe zone. METHODS: The study consisted of 498 patients that underwent bilateral THA by three right-handed surgeons in our hospital. Postoperative acetabular cup anteversion and abduction on an anteroposterior pelvic radiograph were measured by Orthoview software (Orthoview LLC, Jacksonville, Florida)...
May 23, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29792179/hopkins-syndrome-following-the-first-episode-of-bronchial-asthma-associated-with-enterovirus-d68-a-case-report
#10
Fumie Hayashi, Shintaro Hayashi, Dai Matsuse, Ryo Yamasaki, Keiji Yonekura, Jun-Ichi Kira
BACKGROUND: Hopkins syndrome (HS) is a rare disorder presenting with acute flaccid paralysis of the limbs following an asthma attack. Neurologists encounter a diagnostic challenge if patients without a history of bronchial asthma develop neurologic features mimicking HS following acute respiratory distress. We report a case of HS occurring after a first episode of bronchial asthma associated with enterovirus D68 infection. CASE PRESENTATION: A 5-year-old girl developed acute respiratory distress...
May 23, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29792113/the-influence-of-hold-regularity-on-perceptual-motor-behaviour-in-indoor-climbing
#11
Chris Button, Dominic Orth, Keith Davids, Ludovic Seifert
Climbers often train on indoor climbing walls, which are modifiable to simulate features of outdoor climbing environments at different levels of difficulty. The aim of this study was to evaluate the influence of regularity of climbing holds on emergent perceptual-motor behaviours. Skilled climbers performed six repetitions of two topographically similar routes on an indoor climbing wall. One route was composed of 18 different types of hand holds (irregular route), whereas the other route had only two types of hand holds (regular route)...
May 24, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29792107/hand-grip-strength-normative-reference-values-and-equations-for-18-to-85-year-olds-residing-in-the-united-states
#12
Ying-Chih Wang, Richard W Bohannon, Xiaoyan Li, Bhagwant Sindhu, Jay Kapellusch
Study Design Cross-sectional study. Background The value of handgrip strength as an indicator of overall strength and as a predictor of important outcomes notwithstanding, up-to-date and population-specific reference values are needed if measurements of grip strength are to be properly interpreted. Objectives To provide US population-based grip strength reference values and equations for 18- to 85-year-olds. Methods Handgrip data from 1,232 18- to 85-year old participants were extracted from the database of the 2011 normative phase of the NIH Toolbox project...
May 23, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29792077/symptoms-of-ptsd-in-frontline-journalists-a-retrospective-examination-of-18-years-of-war-and-conflict
#13
Anthony Feinstein, Jonas Osmann, Viral Patel
OBJECTIVE: The objective of the current study was to determine the frequency and severity of symptoms of posttraumatic stress disorder (PTSD) in journalists covering conflict. METHODS: PTSD data (Impact of Event Scale-Revised) collected over an 18-year period from 684 conflict journalists were analyzed retrospectively for frequency and severity of reexperiencing, avoidance, and arousal symptoms. Conflicts covered were civil wars in the Balkans ( n = 140 journalists), 9/11 attack in New York City ( n = 46), Iraq war ( n = 84), Mexico drug wars ( n = 104), civil war in Syria ( n = 59), Kenya election violence/Al-Shabab terror ( n = 57), state-sanctioned media intimidation in Iran ( n = 114), and the current migration crisis in Europe ( n = 80)...
January 1, 2018: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
https://www.readbyqxmd.com/read/29791908/a-de-novo-kcna1-mutation-in-a-patient-with-tetany-and-hypomagnesemia
#14
Jenny van der Wijst, Martin Konrad, Sjoerd A J Verkaart, Marcin Tkaczyk, Femke Latta, Janine Altmüller, Holger Thiele, Bodo Beck, Karl Peter Schlingmann, Jeroen H F de Baaij
Mutations in the KCNA1 gene encoding the voltage-gated potassium (K+) channel Kv1.1 have been linked to rare neurological syndromes, episodic ataxia type 1 (EA1) and myokymia. In 2009, a KCNA1 mutation was identified in a large family with autosomal dominant hypomagnesemia. Despite efforts in establishing a genotype-phenotype correlation for the wide variety of symptoms in EA1, little is known on the serum magnesium (Mg2+) levels in these patients. In the present study, we describe a new de novo KCNA1 mutation in a Polish patient with tetany and hypomagnesemia...
May 23, 2018: Nephron
https://www.readbyqxmd.com/read/29791851/distinct-frequency-specialization-for-detecting-dark-transients-in-humans-and-tree-shrews
#15
Abbas Khani, Faiz Mustafar, Gregor Rainer
Despite well-known privileged perception of dark over light stimuli, it is unknown to what extent this dark dominance is maintained when visual transients occur in rapid succession, for example, during perception of moving stimuli. Here, we address this question using dark and light transients presented at different flicker frequencies. Although both human participants and tree shrews exhibited dark dominance for temporally modulated transients, these occurred at different flicker frequencies, namely, at 11 Hz in humans and 40 Hz and higher in tree shrews...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29791775/vaginal-microbiome-in-early-pregnancy-and-subsequent-risk-of-spontaneous-preterm-birth-a-case-control-study
#16
Negar Tabatabaei, A Murat Eren, Luis B Barreiro, Vania Yotova, Anne Dumaine, Catherine Allard, William D Fraser
OBJECTIVES: To explore differences in vaginal microbiome between preterm and term deliveries. DESIGN: Nested case-control study in 3D cohort. SETTING: Quebec, Canada. SAMPLE: Ninety-four cases with spontaneous preterm birth (17 early (<34 wk) and 77 late (34-36 wk) preterm birth) and 356 controls with term delivery (≥37 wk). METHODS: To assess vaginal microbiome by sequencing the V4 region of 16S ribosomal-RNA (rRNA) gene in swabs self-collected early pregnancy...
May 23, 2018: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29791612/application-of-a-brazilian-test-of-expressive-vocabulary-in-european-portuguese-children
#17
Ana Manhani Cáceres-Assenço, Sandra Cristina Araújo Ferreira, Anabela Cruz Santos, Debora Maria Befi-Lopes
Objective to investigate the performance of European Portuguese children in a Brazilian test of expressive vocabulary, seeking to identify differences between age groups and gender, and to verify its applicability in this population. Methods the sample consisted of 150 typical developed children, of both genders, between the ages of 5 and 6. All children attended public schools in the north area of Portugal. To assess the semantic performance, the expressive vocabulary sub-test of the language test (ABFW) was used, considering the percentage of usual verbal assignments and the classification (adequate/inadequate) according to the Brazilian reference values...
2018: CoDAS
https://www.readbyqxmd.com/read/29791587/association-study-of-aff1-rs340630-polymorphism-with-genetic-susceptibility-to-rheumatoid-arthritis-in-chinese-population
#18
Qing-Qing Sun, Dong-Jin Hua, Si-Chao Huang, Han Cen, Li Zhou, Song Shao
This study was performed to examine whether the AF4/FMR2 family, member 1 (AFF1) rs340630 polymorphism is involved in the genetic background of rheumatoid arthritis (RA) in a Chinese population. Two different study groups of RA patients and controls (328 RA patients and 449 healthy controls in the first study group; 232 RA patients and 313 controls in the second study group) were included in our study. Overall, there was no significant difference in either genotype (P=0.71 and 0.64 in the first and second study group, respectively) nor allele (in the first study group: A vs G, P=0...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29791526/geomorphology-based-unit-hydrograph-models-for-flood-risk-management-case-study-in-brazilian-watersheds-with-contrasting-physiographic-characteristics
#19
Samuel Beskow, Gabriela S Nunes, Carlos R DE Mello, Tamara L Caldeira, Lloyd D Norton, Alice A Steinmetz, Marcelle M Vargas, Léo F Ávila
Heavy rainfall in conjunction with an increase in population and intensification of agricultural activities have resulted in countless problems related to flooding in watersheds. Among the techniques available for direct surface runoff (DSR) modeling and flood risk management are the Unit Hydrograph (UH) and Instantaneous Unit Hydrograph (IUH). This study focuses on the evaluation of predictive capability of two conceptual IUH models (Nash and Clark), considering their original (NIUH and CIUH) and geomorphological approaches (NIUHGEO and CIUHGEO), and their advantages over two traditional synthetics UH models - Triangular (TUH) and Dimensionless (DUH), to estimate DSR hydrographs taking as reference two Brazilian watersheds with contrasting geomorphological and climatic characteristics...
May 21, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29791478/exceptional-coprolite-association-from-the-early-cretaceous-continental-lagerst%C3%A3-tte-of-las-hoyas-cuenca-spain
#20
Sandra Barrios-de Pedro, Francisco José Poyato-Ariza, José Joaquín Moratalla, Ángela D Buscalioni
Coprolites are some of the most abundant fossils at the Las Hoyas site, a well-known Early Cretaceous Konservat-Lagerstätte located in Cuenca, central Spain. The coprolite association is described, introducing taphonomic features and sedimentological properties. This study is based on a subsample of 433 fossils selected from some 2000 specimens collected. The taphonomic features of the coprolites show that their integrity, absence of desiccation marks, and volume are congruent with faeces produced and deposited in an aquatic ecosystem, which were immediately covered by microbial mats...
2018: PloS One
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