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https://www.readbyqxmd.com/read/28531961/challenges-in-photocatalytic-reduction-of-nitrate-as-a-water-treatment-technology
#1
Heather O'Neal Tugaoen, Sergi Garcia-Segura, Kiril Hristovski, Paul Westerhoff
Management of ubiquitous nitrate contamination in drinking water sources is a major engineering challenge due to its negative impacts from eutrophication to immediate risk to human health. Several water treatment technologies exist to manage nitrate pollution in water sources. However, the most widely used technologies are phase separation treatments. In this context, nanoscale photocatalysis emerges as a highly promising transformative technology capable of reducing nitrate to innocuous nitrogen with noticeable selectivity...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531766/development-and-initial-validation-of-a-cessation-fatigue-scale
#2
Amanda R Mathew, Bryan W Heckman, Ellen Meier, Matthew J Carpenter
BACKGROUND: Smoking cessation fatigue, or tiredness of attempting to quit smoking, has been posited as a latent construct encompassing loss of motivation, loss of hope in cessation success, decreased self-efficacy, and exhaustion of self-control resources. Despite the potential clinical impact of characterizing cessation fatigue, there is currently no validated measure to assess it. Using a rational scale development approach, we developed a cessation fatigue measure and examined its reliability and construct validity in relation to a) smokers' experience of a recently failed quit attempt (QA) and b) readiness to engage in a subsequent QA...
May 17, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28530712/the-microrna-mir-31-inhibits-cd8-t-cell-function-in-chronic-viral-infection
#3
Howell F Moffett, Adam N R Cartwright, Hye-Jung Kim, Jernej Godec, Jason Pyrdol, Tarmo Äijö, Gustavo J Martinez, Anjana Rao, Jun Lu, Todd R Golub, Harvey Cantor, Arlene H Sharpe, Carl D Novina, Kai W Wucherpfennig
During infection, antigen-specific T cells undergo tightly regulated developmental transitions controlled by transcriptional and post-transcriptional regulation of gene expression. We found that the microRNA miR-31 was strongly induced by activation of the T cell antigen receptor (TCR) in a pathway involving calcium and activation of the transcription factor NFAT. During chronic infection with lymphocytic choriomeningitis virus (LCMV) clone 13, miR-31-deficent mice recovered from clinical disease, while wild-type mice continued to show signs of disease...
May 22, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28530617/-principles-of-urinary-tract-reconstructive-surgery
#4
Juan Gomez Rivas, Jesús Cisneros Ledo
INTRODUCTION: In the last 15 years, the role of laparoscopic surgery has progressively increased to include reconstructive procedures such as pyeloplasty and management of ureteral stricture, in addition to being a field in continuous development, this refers to the improvement of ergonomics, new instruments and new techniques. We present a review on basic features of laparoscopic reconstructive surgery in urology. ACQUISITION OF EVIDENCE: For this review, an exhaustive literature search was performed in PUBMED, MEDILNE, BioMed central and others, with the keywords: reconstructive surgery, urology, laparoscopy...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530505/ingestion-of-sodium-bicarbonate-nahco3-following-a-fatiguing-bout-of-exercise-accelerates-post-exercise-acid-base-balance-recovery-and-improves-subsequent-high-intensity-cycling-time-to-exhaustion
#5
Lewis A Gough, Steven Rimmer, Callum J Osler, Matthew F Higgins
This study evaluated the ingestion of sodium bicarbonate (NaHCO3) on post-exercise acid-base balance recovery kinetics and subsequent high-intensity cycling time to exhaustion. In a counterbalanced, crossover design, nine healthy and active males (age: 23±2 years, height: 179±5 cm, body mass: 74±9 kg, peak mean minute power (WPEAK) 256±45 W, peak oxygen uptake (V̇O2PEAK) 46±8 ml.kg(-1).min(-1)) performed a graded incremental exercise test, two familiarisation and two experimental trials. Experimental trials consisted of cycling to volitional exhaustion (TLIM1) at 100% WPEAK on two occasions (TLIM1 and TLIM2) interspersed by a 90 min passive recovery period...
May 22, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28530476/time-trials-versus-time-to-exhaustion-tests-effects-on-critical-power-w-and-oxygen-uptake-kinetics
#6
Bettina Karsten, Jonathan Baker, Fernando Naclerio, Andreas Klose, Antonino Bianco, Alfred Nimmerichter
PURPOSE: To investigate single-day time-to-exhaustion (TTE) and time trial (TT) based laboratory tests values of critical power (CP), Wprime (W') and respective oxygen kinetics responses. METHODS: Twelve cyclists performed a maximal ramp test followed by three TTE and three TT efforts interspersed by a 60-min recovery between efforts. Oxygen uptake was measured during all trials. The mean response time (MRT) was calculated as a description of the overall V̇O2 kinetic response from the onset to 2 min of exercise...
May 22, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28530418/is-political-behavior-a-viable-coping-strategy-to-perceived-organizational-politics-unveiling-the-underlying-resource-dynamics
#7
Shuhua Sun, Huaizhong Chen
We conduct a theory-driven empirical investigation on whether political behavior, as a coping strategy to perceived organizational politics, creates resource trade-offs in moderating the relationship between perceived organizational politics and task performance. Drawing on conservation of resources theory, we hypothesize that political behavior mitigates the adverse effect of perceived organizational politics on task performance via psychological empowerment, yet exacerbates its adverse effect on task performance via emotional exhaustion...
May 22, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28530171/the-implications-of-psychological-symptoms-for-length-of-sick-leave
#8
Antonius Schneider, Sven Hilbert, Johannes Hamann, Svenja Skadsem, Jürgen Glaser, Bernd Löwe, Markus Bühner
BACKGROUND: In this cross-sectional study, we aimed to determine the relation between sick leave duration, burnout symptoms, depression, anxiety, and somatization in a primary care setting. METHODS: Patients receiving a sickness certificate in one of 14 participating primary care practices were consecutively asked by their primary care physician to fill in a questionnaire comprising the Maslach Burnout Inventory-General Survey (MBI-GS) and the Patient Health Questionnaire (PHQ) containing the depression (PHQ-9), somatization (PHQ-15), and anxiety (GAD-7) scales...
April 28, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28530097/total-particle-number-emissions-from-modern-diesel-natural-gas-and-hybrid-heavy-duty-vehicles-during-on-road-operation
#9
Tianyang Wang, David Christopher Quiros, Arvind Thiruvengadam, Saroj Pradhan, Shaohua Hu, Tao Huai, Eon S Lee, Yifang Zhu
Particle emissions from heavy-duty vehicles (HDVs) have significant environmental and public health impacts. This study measured total particle number emission factors (PNEFs) from six newly-certified HDVs powered by diesel and compressed natural gas totaling over 6,800 miles of on-road operation in California. Distance-, fuel- and work-based PNEFs were calculated for each vehicle. Distance-based PNEFs of vehicles equipped with original equipment manufacturer (OEM) diesel particulate filters (DPFs) in this study have decreased by 355-3200 times compared to a previous retrofit DPF dynamometer study...
May 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28529635/synthesis-of-5-18-f-fluoro-%C3%AE-methyl-tryptophan-new-trp-based-pet-agents
#10
Benjamin C Giglio, Haiyang Fei, Mengzhe Wang, Hui Wang, Liu He, Huijuan Feng, Zhanhong Wu, Hongjian Lu, Zibo Li
Indoleamine 2,3-dioxygenase (IDO1) plays a special role in the biology of various cancer types, because it breaks down the essential amino acid tryptophan for immune cell activation. Upregulation of IDO1 significantly correlates with the number of various T cell types in tumor tissues in melanoma and other cancers, suggesting that IDO expression is linked with effective and ineffective ('exhausted') immune response in cancer. Based on the reported IDO inhibitors (α-Methylated and indole-N-methylated tryptophan (Trp)), here we report the synthesis of potential IDO1 imaging agents through direct introduction of (18)F into the tryptophan aromatic ring...
2017: Theranostics
https://www.readbyqxmd.com/read/28529491/decision-making-processes-in-the-workplace-how-exhaustion-lack-of-resources-and-job-demands-impair-them-and-affect-performance
#11
Andrea Ceschi, Evangelia Demerouti, Riccardo Sartori, Joshua Weller
The present study aims to connect more the I/O and the decision-making psychological domains, by showing how some common components across jobs interfere with decision-making and affecting performance. Two distinct constructs that can contribute to positive workplace performance have been considered: decision-making competency (DMCy) and decision environment management (DEM). Both factors are presumed to involve self-regulatory mechanisms connected to decision processes by influencing performance in relation to work environment conditions...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28528757/temporal-and-seasonal-variations-of-black-carbon-in-a-highly-polluted-european-city-apportionment-of-potential-sources-and-the-effect-of-meteorological-conditions
#12
Marek Kucbel, Agnieszka Corsaro, Barbora Švédová, Helena Raclavská, Konstantin Raclavský, Dagmar Juchelková
Black carbon - a primary component of particulate matter emitted from an incomplete combustion of fossil fuels, biomass, and biofuels - has been found to have a detrimental effect on human health and the environment. Since black carbon emissions data are not readily available, no measures are implemented to reduce black carbon emissions. The temporal and seasonal variations of black carbon concentrations were evaluated during 2012-2014. The data were collected in the highly polluted European city - Ostrava, Czech Republic, surrounded by major highways and large industries...
May 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28528090/key-odor-and-physicochemical-characteristics-of-raw-and-roasted-jicaro-seeds-crescentia-alata-k-h-b
#13
Carla Vaneza Corrales, Marc Lebrun, Fabrice Vaillant, Marie Noelle Madec, Sylvie Lortal, Ana Mercedes Pérez, Geneviève Fliedel
Jicaro seeds (Crescentia alata) are widely consumed in Central America, primarily as a popular tasty and nutritious beverage called "horchata". Seeds are roasted to develop a specific aroma through a process that has never been explored. Volatile compounds, extracted from raw and roasted jicaro seeds (140°C for 140s) by SAFE (Solvent Assisted Flavor Evaporation), were analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). Twenty-seven volatile compounds were isolated, among which, ethyl-2-methylbutyrate was designated by olfactometry as providing the characteristic jicaro note (0...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28527553/comparison-of-nurses-in-two-different-cultures-who-experiences-more-burnout
#14
Zeynep Karaman Özlü, Ayşegül Çay Yayla, Kenan Gümüş, Elisha Khaghanyrad
PURPOSE: Although burnout occurs in almost all occupational groups, it is mostly observed in professions requiring face-to-face relationships with people, especially among health care workers who deal constantly with problems and expectations of people. DESIGN: The objective of this study was to determine the burnout levels of nurses working in surgical clinics in two countries. METHODS: This descriptive study was conducted between June and September 2013...
June 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28527095/-putting-on-my-best-normal-social-camouflaging-in-adults-with-autism-spectrum-conditions
#15
Laura Hull, K V Petrides, Carrie Allison, Paula Smith, Simon Baron-Cohen, Meng-Chuan Lai, William Mandy
Camouflaging of autistic characteristics in social situations is hypothesised as a common social coping strategy for adults with autism spectrum conditions (ASC). Camouflaging may impact diagnosis, quality of life, and long-term outcomes, but little is known about it. This qualitative study examined camouflaging experiences in 92 adults with ASC, with questions focusing on the nature, motivations, and consequences of camouflaging. Thematic analysis was used to identify key elements of camouflaging, which informed development of a three-stage model of the camouflaging process...
May 19, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28526759/il-2-high-tissue-resident-t-cells-in-the-human-liver-sentinels-for-hepatotropic-infection
#16
Laura J Pallett, Jessica Davies, Emily J Colbeck, Francis Robertson, Navjyot Hansi, Nicholas J W Easom, Alice R Burton, Kerstin A Stegmann, Anna Schurich, Leo Swadling, Upkar S Gill, Victoria Male, TuVinh Luong, Amir Gander, Brian R Davidson, Patrick T F Kennedy, Mala K Maini
The liver provides a tolerogenic immune niche exploited by several highly prevalent pathogens as well as by primary and metastatic tumors. We have sampled healthy and hepatitis B virus (HBV)-infected human livers to probe for a subset of T cells specialized to overcome local constraints and mediate immunity. We characterize a population of T-bet(lo)Eomes(lo)Blimp-1(hi)Hobit(lo) T cells found within the intrahepatic but not the circulating memory CD8 T cell pool expressing liver-homing/retention markers (CD69(+)CD103(+) CXCR6(+)CXCR3(+))...
May 19, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28526680/decrease-in-numbers-of-naive-and-resting-b-cells-in-hiv-infected-kenyan-adults-leads-to-a-proportional-increase-in-total-and-plasmodium-falciparum-specific-atypical-memory-b-cells
#17
Anne E Frosch, Oludare A Odumade, Justin J Taylor, Kathleen Ireland, George Ayodo, Bartholomew Ondigo, David L Narum, John Vulule, Chandy C John
Human immunodeficiency virus type 1 (HIV-1) infection is associated with B cell activation and exhaustion, and hypergammaglobulinemia. How these changes influence B cell responses to coinfections such as malaria is poorly understood. To address this, we compared B cell phenotypes and Abs specific for the Plasmodium falciparum vaccine candidate apical membrane Ag-1 (AMA1) in HIV-infected and uninfected adults living in Kenya. Surprisingly, HIV-1 infection was not associated with a difference in serum AMA1-specific Ab levels...
May 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28524893/compassion-fatigue-exploring-early-career-oncology-nurses-experiences%C3%A2
#18
Brooke A Finley, Kate G Sheppard
BACKGROUND: Oncology nurses have a higher risk and rate of compassion fatigue (CF) compared to professionals in other specialties. CF exhibits tangible negative outcomes, affecting nurses' health and professional practice.
. OBJECTIVES: Early-career oncology nurses' unique CF experiences lack thorough scientific exploration. This secondary analysis seeks to qualitatively augment this paucity and illuminate targeted interventions.
. METHODS: Open-ended interviews were conducted with five early-career inpatient oncology nurses...
June 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28524873/mesoporous-metallic-rhodium-nanoparticles
#19
Bo Jiang, Cuiling Li, Ömer Dag, Hideki Abe, Toshiaki Takei, Tsubasa Imai, Md Shahriar A Hossain, Md Tofazzal Islam, Kathleen Wood, Joel Henzie, Yusuke Yamauchi
Mesoporous noble metals are an emerging class of cutting-edge nanostructured catalysts due to their abundant exposed active sites and highly accessible surfaces. Although various noble metal (e.g. Pt, Pd and Au) structures have been synthesized by hard- and soft-templating methods, mesoporous rhodium (Rh) nanoparticles have never been generated via chemical reduction, in part due to the relatively high surface energy of rhodium (Rh) metal. Here we describe a simple, scalable route to generate mesoporous Rh by chemical reduction on polymeric micelle templates [poly(ethylene oxide)-b-poly(methyl methacrylate) (PEO-b-PMMA)]...
May 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28524808/determination-of-safe-and-critical-nanoparticles-exposure-to-welders-in-a-workshop
#20
J F Gomes, R M Miranda
The present study examined consequences of "safe" versus "critical" exposure to nanoparticles (NP) released during welding operations. With this aim in mind, a set of measurements regarding NP emissions was undertaken in a workshop during welding by metal active gas of carbon steel using different mixtures of argon (Ar) and carbon dioxide (CO2) as well as different process parameters which might influence emission of (NP). If these measurements were conducted in several locations away from the welding sources, the graphical representation of the obtained observations with time enabled definition of "safe" and "critical" regions within a welding workshop in terms of welder's exposure...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
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