keyword
MENU ▼
Read by QxMD icon Read
search

Counter current

keyword
https://www.readbyqxmd.com/read/28528503/a-flux-enhancing-forward-osmosis-nanofiltration-integrated-treatment-system-for-the-tannery-wastewater-reclamation
#1
Parimal Pal, Sankha Chakrabortty, Jayato Nayak, Suman Senapati
Effective treatment of tannery wastewater prior to discharge to the environment as per environmental regulations remains a big challenge despite efforts to bring down the concentrations of the pollutants which are often quite high as measured in terms of chemical oxygen demand (7800 mg/L), total dissolved solids (5400 mg/L), chloride (4260 mg/L), sulphides (250 mg/L) and chromium. A pilot-scale forward osmosis and nanofiltration integrated closed loop system was developed for continuous reclamation of clean water from tannery wastewater at a rate of 52-55 L/m(2)/h at 1...
May 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28528251/biological-activity-and-safety-profile-of-the-essential-oil-from-fruits-of-heracleum-mantegazzianum-sommier-levier-apiaceae
#2
Krystyna Skalicka-Woźniak, Agnieszka Grzegorczyk, Łukasz Świątek, Magdalena Walasek, Jarosław Widelski, Barbara Rajtar, Małgorzata Polz-Dacewicz, Anna Malm, Hosam O Elansary
A composition of essential oils obtained from Heracleum mantegazzianum (Apiaceae) was examined using a GC-MS method. n-Octyl acetate (19.92%), n-hexyl-2-methylbutanoate (10.84%), n-octanol (10.13%), n-octyl butanoate (8.88%), n-octyl-2-methylbutanoate (8.01%), n-hexyl acetate (7.11%), n-octyl isobutanoate (5.5%) and n-hexyl isobutanoate (5.43%) were the main compounds. The high-performance counter-current chromatography was applied for purification of aliphatic alcohols and esters. A mixture of n-hexane, acetonitrile and tetr-butyl methyl ether (1:1:0...
May 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28522868/first-demonstration-of-multi-color-3-d-in-vivo-imaging-using-ultra-compact-compton-camera
#3
Aya Kishimoto, Jun Kataoka, Takanori Taya, Leo Tagawa, Saku Mochizuki, Shinji Ohsuka, Yuto Nagao, Keisuke Kurita, Mitsutaka Yamaguchi, Naoki Kawachi, Keiko Matsunaga, Hayato Ikeda, Eku Shimosegawa, Jun Hatazawa
In the field of nuclear medicine, single photon emission tomography and positron emission tomography are the two most common techniques in molecular imaging, but the available radioactive tracers have been limited either by energy range or difficulties in production and delivery. Thus, the use of a Compton camera, which features gamma-ray imaging of arbitrary energies from a few hundred keV to more than MeV, is eagerly awaited along with potential new tracers which have never been used in current modalities...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28521737/validation-of-the-german-version-of-the-mediterranean-diet-adherence-screener-medas-questionnaire
#4
Katrin Hebestreit, Maryam Yahiaoui-Doktor, Christoph Engel, Walter Vetter, Michael Siniatchkin, Nicole Erickson, Martin Halle, Marion Kiechle, Stephan C Bischoff
BACKGROUND: Health benefits of the Mediterranean Diet (MD) have been shown in different at-risk populations. A German translation of the Mediterranean Diet Adherence Screener (MEDAS) from the PREvención con DIeta MEDiterránea (PREDIMED) consortium was used in the LIBRE study, investigating effects of lifestyle-intervention on women with BRCA1/2 mutations. The purpose of the present study is to validate the MEDAS German version. METHODS: LIBRE is a multicentre (three university hospitals during this pilot phase), unblinded, randomized, controlled clinical trial...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28520988/geographical-inequality-in-tobacco-control-in-china-multilevel-evidence-from-98-058-participants
#5
Thomas Astell-Burt, Mei Zhang, Xiaoqi Feng, Limin Wang, Yichong Li, Andrew Page, Maigeng Zhou, Linhong Wang
Background: We investigated the spatial patterning and correlates of tobacco smoking, exposure to second-hand smoke, smoking in public places, workplace smoking prohibition, pro- and counter-tobacco advertisements in mainland China. Methods: Choropleth maps and multilevel models were used to assess geographical variation and correlates of the aforementioned outcome variables for 98,058 participants across 31 provinces of China in 2010. Results: Current tobacco smoking prevalence was higher in the central provinces for men and in the north eastern provinces and Tibet for women...
May 17, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28516288/efficacy-and-safety-of-ibuprofen-in-infants-aged-between-3-and-6-months
#6
Victoria C Ziesenitz, Andreas Zutter, Thomas O Erb, Johannes N van den Anker
Ibuprofen is a non-steroidal anti-inflammatory drug frequently administered to children of various ages for relief of fever and pain and is approved as an over-the-counter medication in many countries worldwide. Although there are extensive data on its efficacy and safety in children and adults, there are divergent dosing recommendations for analgesia and treatment of fever in infants, especially in the age group between 3 and 6 months of age. In this article, we have assessed the safety and efficacy of ibuprofen use in infants in an attempt to find the optimal method of pain and fever management in this specific age group...
May 17, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28515696/the-reliability-and-validity-of-a-four-minute-running-time-trial-in-assessing-formula-see-text-max-and-performance
#7
Kerry McGawley
Introduction: Traditional graded-exercise tests to volitional exhaustion (GXTs) are limited by the need to establish starting workloads, stage durations, and step increments. Short-duration time-trials (TTs) may be easier to implement and more ecologically valid in terms of real-world athletic events. The purpose of the current study was to assess the reliability and validity of maximal oxygen uptake ([Formula: see text]max) and performance measured during a traditional GXT (STEP) and a four-minute running time-trial (RunTT)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28513141/application-of-cu3insnse5-heteronanostructures-as-counter-electrodes-for-dye-sensitized-solar-cells
#8
Yue Lou, Wenjie Zhao, Chunguang Li, He Huang, Tianyu Bai, Cailing Chen, Chen Liang, Zhan Shi, Dong Zhang, Xiao-Bo Chen, Shouhua Feng
In this research, we reported the synthesis of quaternary Cu3InSnSe5 nanoparticles with uniform size distribution and morphology for the first time through delicate controls over the chemical reaction kinetics. On the basis of the preparation strategy of Cu3InSnSe5 nanoparticles, Pt-Cu3InSnSe5 and Au-Cu3InSnSe5 heteronanostructures were designed and yielded using a simple and efficient seed growth method. These two heteronanostructures remained monodispersed without presence of any Cu3InSnSe5 nanocrystal impurities...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28513129/electrodeposited-nickel-cobalt-sulfide-catalyst-for-the-hydrogen-evolution-reaction
#9
Ahamed Irshad, Nookala Munichandraiah
A novel Ni-Co-S based material is prepared by potentiodynamic deposition from an aqueous solution containing Ni(2+), Co(2+) and thiourea, and is studied as an electrocatalyst for the hydrogen evolution reaction (HER) in neutral phosphate solution. The composition of the catalyst and HER activity are tuned by varying the ratio of concentrations of Ni(2+) and Co(2+) ions in the electrolytes. Under optimized deposition conditions, the bimetallic Ni-Co-S exhibits higher electrocatalytic activity than its monometallic counter parts...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28513110/separation-and-purification-of-two-minor-typical-diarrhetic-shellfish-poisoning-toxins-from-harmful-marine-microalgae-via-combined-liquid-chromatography-with-mass-spectrometric-detection
#10
Junhui Chen, Yanlong Wang, Lei Pan, Huihui Shen, Dan Fu, Boqiang Fu, Chengjun Sun, Li Zheng
A novel method was developed for the purification of two typical diarrhetic shellfish poisoning toxins from toxin-producing marine microalgae using macroporous resin, high-speed counter-current chromatography-mass spectrometry, and semi-preparative high-performance liquid chromatography-mass spectrometry (HPLC-MS). Analytical HPLC-MS was used for identification and purity analysis of okadaic acid and dinophysistoxin-1 because they exhibit no visible or ultraviolet absorption. First, four kinds of macroporous resins were investigated, and HP-20 macroporous resin was selected for the pre-enrichment and cleanup of the two target toxins...
May 17, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28507524/changing-what-you-see-by-changing-what-you-know-the-role-of-attention
#11
Gary Lupyan
Attending is a cognitive process that incorporates a person's knowledge, goals, and expectations. What we perceive when we attend to one thing is different from what we perceive when we attend to something else. Yet, it is often argued that attentional effects do not count as evidence that perception is influenced by cognition. I investigate two arguments often given to justify excluding attention. The first is arguing that attention is a post-perceptual process reflecting selection between fully constructed perceptual representations...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28507308/barriers-to-breastfeeding-in-lebanon-a-policy-analysis
#12
Chaza Akik, Hala Ghattas, Suzanne Filteau, Cecile Knai
Although the issue of breastfeeding in Lebanon has risen on the political agenda, the country does not meet international recommendations for early breastfeeding practices. This study analysed barriers to dissemination, implementation, and enforcement of key policies to improve early breastfeeding practices. We conducted interviews with stakeholders in breastfeeding policy in Lebanon and used a framework approach for analysing data. We found a disconnect between policy endorsement and translation on the ground, weak engagement of professional associations and governmental institutions, undue influence by the breast milk substitute industry, and competing priorities-most notably the current refugee crisis...
May 15, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28504523/decomposition-of-a-sensory-prediction-error-signal-for-visuomotor-adaptation
#13
Peter A Butcher, Jordan A Taylor
To accomplish effective motor control, the brain contains an internal forward model that predicts the expected sensory consequence of a motor command. When this prediction is inaccurate, a sensory prediction error is produced which adapts the forward model to make more accurate predictions of future movements. Other types of errors, such as task performance errors or reward, play less of a role in adapting a forward model. This raises the following question: What unique information is conveyed by the sensory prediction error that results in forward model adaptation? sensory prediction errors typically contain both the magnitude and direction of the error, but it is unclear if both components are necessary for adaptation or a single component is sufficient...
May 15, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28503217/assessment-and-use-of-drug-information-references-in-utah-pharmacies
#14
Krystal L Moorman, Elyse A Macdonald, Anthony Trovato, Casey R Tak
OBJECTIVE: To determine which drug references Utah pharmacists use most frequently. To determine which types of drug information questions are most commonly asked, and whether Utah pharmacists have access to adequate references to respond to these questions. METHODS: A 19-question survey was created using Qualtrics, LLC (Provo, Utah) software. An electronic survey link was sent to 1,431 pharmacists with a valid e-mail address listed in the Department of Professional Licensing database...
January 2017: Pharmacy Practice
https://www.readbyqxmd.com/read/28496129/acoustoelectric-current-in-graphene-nanoribbons
#15
T Poole, G R Nash
Surface acoustic waves (SAWs) propagating on piezoelectric substrates offer a convenient, contactless approach to probing the electronic properties of low-dimensional charge carrier systems such as graphene nanoribbons (GNRs). SAWs can also be used to transport and manipulate charge for applications such as metrology and quantum information. In this work, we investigate the acoustoelectric effect in GNRs, and show that an acoustoelectric current can be generated in GNRs with physical widths as small as 200 nm at room temperature...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28494715/the-click-test-a-novel-tool-to-quantify-the-age-related-decline-of-fast-motor-sequencing-of-the-thumb
#16
Florian Bodranghien, Helene Mahé, Benjamin Baude, Mario U Manto, Yves Busegnies, Stéphane Camut, Christophe Habas, Peter Marien, Giovanni de Marco, Kim van Dun
BACKGROUND: The thumb plays a critical role for manual tasks during the activities of daily life and the incidence of neurological or musculoskeletal disorders affecting the voluntary movements of the thumb is high in the elderly. There is currently no tool to assess repetitive motor sequencing of the thumb during ageing. OBJECTIVES: To report a novel procedure (the Click Test) assessing the effects of ageing on fast motor sequencing of the thumb. METHODS: Healthy subjects (n = 252; mean age +/- SD: 49...
May 10, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28492290/atezolizumab-a-novel-pd-l1-inhibitor-in-cancer-therapy-with-a-focus-in-bladder-and-non-small-cell-lung-cancers
#17
A Krishnamurthy, A Jimeno
In recent years, immunotherapy has come to the forefront as a major development in cancer treatment. Evasion of the immune system by tumor cells has been identified as one of the hallmarks of cancer and multiple therapies have been developed to counter this process. Programmed cell death 1 ligand 1 (PD-L1), a ligand to programmed cell death protein 1 (PD-1), is expressed by many cancer cells and the binding of PD-L1 to PD-1 results in the suppression of T-cell-mediated immune response against cancer cells. Atezolizumab is a monoclonal antibody that binds to PD-L1 and blocks its interaction with PD-1, thereby enhancing T-cell activity against tumor cells...
April 2017: Drugs of Today
https://www.readbyqxmd.com/read/28487246/academic-stress-and-personality-interact-to-increase-the-neural-response-to-high-calorie-food-cues
#18
Selin Neseliler, Beth Tannenbaum, Maria Zacchia, Kevin Larcher, Kirsty Coulter, Marie Lamarche, Errol B Marliss, Jens Pruessner, Alain Dagher
Psychosocial stress is associated with an increased intake of palatable foods and weight gain in stress-reactive individuals. Personality traits have been shown to predict stress-reactivity. However, it is not known if personality traits influence brain activity in regions implicated in appetite control during psychosocial stress. The current study assessed whether Gray's Behavioural Inhibition System (BIS) scale, a measure of stress-reactivity, was related to the activity of brain regions implicated in appetite control during a stressful period...
May 6, 2017: Appetite
https://www.readbyqxmd.com/read/28485090/risk-of-stroke-in-prescription-and-other-amphetamine-type-stimulants-use-a-systematic-review
#19
REVIEW
Blanca Iciar Indave, Luis Sordo, María José Bravo, Ana Sarasa-Renedo, Sonia Fernández-Balbuena, Luis De la Fuente, Michela Sonego, Gregorio Barrio
INTRODUCTION AND AIMS: Amphetamine-type stimulants (ATS) are a putative cause of stroke with high abuse potential. We aim to systematically review the association between use of ATS and stroke. DESIGN AND METHODS: To assure a sensitive search strategy, a broad definition of ATS was used. Cochrane Plus, EMBASE, IBECS/Lilacs, ISI WOK, Medline and Scopus were searched through 2016. Three researchers independently reviewed studies (Meta-analysis of Observational Studies in Epidemiology and Preferred Reporting Items for Systematic Reviews and Meta-analyses)...
May 8, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/28482367/accuracy-of-cycling-power-meters-against-a-mathematical-model-of-treadmill-cycling
#20
Thomas Maier, Lucas Schmid, Beat Müller, Thomas Steiner, Jon Peter Wehrlin
The aim of this study was to compare the accuracy among a high number of current mobile cycling power meters used by elite and recreational cyclists against a first principle-based mathematical model of treadmill cycling. 54 power meters from 9 manufacturers used by 32 cyclists were calibrated. While the cyclist coasted downhill on a motorised treadmill, a back-pulling system was adjusted to counter the downhill force. The system was then loaded 3 times with 4 different masses while the cyclist pedalled to keep his position...
May 8, 2017: International Journal of Sports Medicine
keyword
keyword
81267
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"