keyword
MENU ▼
Read by QxMD icon Read
search

Work

keyword
https://www.readbyqxmd.com/read/29908516/analysis-of-volatiles-in-fire-debris-by-combination-of-activated-charcoal-strips-acs-and-automated-thermal-desorption-gas-chromatography-mass-spectrometry-atd-gc-ms
#1
Marie Martin Fabritius, Alain Broillet, Stefan König, Wolfgang Weinmann
Adsorption of volatiles in gaseous phase to activated charcoal strip (ACS) is one possibility for the extraction and concentration of ignitable liquid residues (ILRs) from fire debris in arson investigations. Besides liquid extraction using carbon dioxide or hexane, automated thermo-desorption can be used to transfer adsorbed residues to direct analysis by gas chromatography-mass spectrometry (GC-MS). We present a fire debris analysis work-flow with headspace adsorption of volatiles onto ACS and subsequent automated thermo-desorption (ATD) GC-MS analysis...
June 4, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29908514/sdvsrm-a-new-ssrm-based-technique-featuring-dynamically-adjusted-scanner-synchronized-sample-voltages-for-measurement-of-actively-operated-devices
#2
Stefan Doering, Andre Wachowiak, Hagen Roetz, Stefan Eckl, Thomas Mikolajick
Scanning spreading resistance microscopy (SSRM) with its high spatial resolution and high dynamic signal range is a powerful tool for two-dimensional characterization of semiconductor dopant areas. However, the application of the method is limited to devices in equilibrium condition, as the investigation of actively operated devices would imply potential differences within the device, whereas SSRM relies on a constant voltage difference between sample surface and probe tip. Furthermore, the standard preparation includes short circuiting of all device components, limiting applications to devices in equilibrium condition...
June 1, 2018: Ultramicroscopy
https://www.readbyqxmd.com/read/29908505/a-green-soundscape-index-gsi-the-potential-of-assessing-the-perceived-balance-between-natural-sound-and-traffic-noise
#3
Pablo Kogan, Jorge P Arenas, Fernando Bermejo, María Hinalaf, Bruno Turra
Urban soundscapes are dynamic and complex multivariable environmental systems. Soundscapes can be organized into three main entities containing the multiple variables: Experienced Environment (EE), Acoustic Environment (AE), and Extra-Acoustic Environment (XE). This work applies a multidimensional and synchronic data-collecting methodology at eight urban environments in the city of Córdoba, Argentina. The EE was assessed by means of surveys, the AE by acoustic measurements and audio recordings, and the XE by photos, video, and complementary sources...
June 13, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29908501/review-of-modelling-air-pollution-from-traffic-at-street-level-the-state-of-the-science
#4
REVIEW
H Forehead, N Huynh
Traffic emissions are a complex and variable cocktail of toxic chemicals. They are the major source of atmospheric pollution in the parts of cities where people live, commute and work. Reducing exposure requires information about the distribution and nature of emissions. Spatially and temporally detailed data are required, because both the rate of production and the composition of emissions vary significantly with time of day and with local changes in wind, traffic composition and flow. Increasing computer processing power means that models can accept highly detailed inputs of fleet, fuels and road networks...
June 13, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29908490/identification-characterization-and-expression-analysis-of-calmodulin-and-calmodulin-like-genes-in-grapevine-vitis-vinifera-reveal-likely-roles-in-stress-responses
#5
Elodie Vandelle, Alessandro Vannozzi, Darren Wong, Davide Danzi, Anne-Marie Digby, Silvia Dal Santo, Alessandra Astegno
Calcium (Ca2+ ) is an ubiquitous key second messenger in plants, where it modulates many developmental and adaptive processes in response to various stimuli. Several proteins containing Ca2+ binding domain have been identified in plants, including calmodulin (CaM) and calmodulin-like (CML) proteins, which play critical roles in translating Ca2+ signals into proper cellular responses. In this work, a genome-wide analysis conducted in Vitis vinifera identified three CaM- and 62 CML-encoding genes. We assigned gene family nomenclature, analyzed gene structure, chromosomal location and gene duplication, as well as protein motif organization...
June 4, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29908489/work-related-fatal-injuries-in-brescia-county-northern-italy-1982-to-2015-a-forensic-analysis
#6
REVIEW
Silvia Perotti, Maria Cristina Russo
Work-related deaths represent an important social problem. We report all the occupational fatal injuries recorded by the Brescia Institute of Forensic Medicine from 1982 to 2015. A total of 426 post-mortem examinations due to accidental work injuries were retrospectively analysed according to temporal distribution (year, month and day of the workplace accident); workers' characteristics (sex, age, nationality); type of occupation; cause of death; anatomical region of fatal injuries and timing of death. The accidental occupational events occurred with a mean of 12...
June 6, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29908488/effect-of-dissolution-of-magnesium-alloy-az31-on-the-rheological-properties-of-phosphate-buffer-saline
#7
Usman Riaz, Leela Rakesh, Ishraq Shabib, Waseem Haider
The issue of long-term incompatible interactions associated with the permanent implants can be eliminated by using various biodegradable metal implants. The recent research is focusing on the use of degradable stents to restore most of the hindrances of capillaries, and coronary arteries by supplying instant blood flow with constant mechanical and structural support. However, internal endothelialization and infection due to the corrosion of implanted stents are not easy to diagnose in the long run. In the recent past, magnesium (Mg) has been widely investigated for the cardiovascular stent applications...
June 5, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29908472/cognitive-bias-modification-as-an-add-on-treatment-in-clinical-depression-results-from-a-placebo-controlled-single-blinded-randomized-control-trial
#8
Janna N Vrijsen, Verena S Fischer, Bernhard W Müller, Norbert Scherbaum, Eni S Becker, Mike Rinck, Indira Tendolkar
BACKGROUND: Only 60% of depressed patients respond sufficiently to treatment, so there is a dire need for novel approaches to improve treatment effects. Cognitive Bias Modification (CBM) may be an effective and easily implemented computerized add-on to treatment-as-usual. Therefore, we investigated the effects of a positivity-attention training and a positivity-approach training compared to control trainings. METHODS: In a blinded randomized-controlled design, 139 depressed inpatients received either the CBM Attention Dot-Probe Training (DPT) or the CBM Approach-Avoidance Training (AAT), next to treatment as usual...
June 6, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29908470/chromatographic-test-methods-for-characterizing-alkylsiloxane-bonded-silica-columns-for-reversed-phase-liquid-chromatography
#9
REVIEW
Colin F Poole
Major obstacles to formulating a simple retention mechanism for reversed-phase liquid chromatography have a direct impact on the development of experimental methods for column characterization as they limit our capability to understand observed differences in retention at a system level. These problems arise from the heterogeneous composition of the stationary phase, the difficulty of providing a working definition for the phase ratio, and uncertainty as to whether the distribution mechanism for varied compounds is a partition, adsorption or mixed (combination) of these models...
June 7, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29908467/a-french-hernia-in-dubai-a-case-report
#10
Yousif H Al Abboudi, Hajer A Busharar, Labib S Alozaibi, Asnin Shah, Rafya Ahmed
INTRODUCTION: De Garengeot hernia was first described in 1731. It is rare type of hernia and there is no established mode of treatment for it to date. This work has been reported in line with the SCARE criteria (Agha et al., 2016). PRESENTATION OF CASE: We present a case of a 72 years old male with a non-reducible right inguinal swelling diagnosed to be a femoral hernia with congested appendix within. There are less than 100 cases like this reported to date in the literature...
May 31, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29908456/framework-for-the-assessment-of-pems-portable-emissions-measurement-systems-uncertainty
#11
Barouch Giechaskiel, Michael Clairotte, Victor Valverde-Morales, Pierre Bonnel, Zlatko Kregar, Vicente Franco, Panagiota Dilara
European regulation 2016/427 (the first package of the so-called Real-Driving Emissions (RDE) regulation) introduced on-road testing with Portable Emissions Measurement Systems (PEMS) to complement the chassis dynamometer laboratory (Type I) test for the type approval of light-duty vehicles in the European Union since September 2017. The Not-To-Exceed (NTE) limit for a pollutant is the Type I test limit multiplied by a conformity factor that includes a margin for the additional measurement uncertainty of PEMS relative to standard laboratory equipment...
June 13, 2018: Environmental Research
https://www.readbyqxmd.com/read/29908451/inhibitors-of-protein-protein-interactions-ppis-an-analysis-of-scaffold-choices-and-buried-surface-area
#12
REVIEW
Xu Ran, Jason E Gestwicki
Protein-protein interactions (PPI) were once considered 'undruggable', but clinical successes, driven by advanced methods in drug discovery, have challenged that notion. Here, we review the last three years of literature on PPI inhibitors to understand what is working and why. From the 66 recently reported PPI inhibitors, we found that the average molecular weight was significantly greater than 500Da, but that this trend was driven, in large part, by the contribution of peptide-based compounds. Despite differences in average molecular weight, we found that compounds based on small molecules or peptides were almost equally likely to be potent inhibitors (KD <1μM)...
June 13, 2018: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/29908437/studies-on-2-phenylquinoline-staphylococcus-aureus-nora-efflux-pump-inhibitors-new-insights-on-the-c-6-position
#13
Tommaso Felicetti, Rolando Cannalire, Maria Giulia Nizi, Oriana Tabarrini, Serena Massari, Maria Letizia Barreca, Giuseppe Manfroni, Bryan D Schindler, Violetta Cecchetti, Glenn W Kaatz, Stefano Sabatini
The alarming and rapid spread of antimicrobial resistance among bacteria represents a high risk for global health. Targeting factors involved in resistance to restore the activity of failing antibiotics is a promising strategy to overcome this urgent medical need. Efflux pump inhibitors are able to increase antibiotic concentrations in bacteria, thus they can be considered true antimicrobial resistance breakers. In this work, continuing our studies on inhibitors of the Staphylococcus aureus NorA pump, we designed, synthesized and biologically evaluated novel 2-phenylquinoline derivatives starting from our hits 1 and 2...
June 6, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29908434/characterizing-within-subject-variability-in-quantified-measures-of-balance-control-a-cohort-study
#14
Lise C Worthen-Chaudhari, Scott M Monfort, Courtney Bland, Xueliang Pan, Ajit M W Chaudhari
BACKGROUND: To longitudinally assess individuals using quantified measures, we must characterize within-subject variability (WSV) of the measures. RESEARCH QUESTION: What is the natural within-subject variability (WSV) that can be expected in postural control over 3+ days? METHODS: Thirteen individuals without orthopedic or neurologic impairment (mean(SD) = 55 (9) years; 76 (18) kg; 11 females/2 males) were recruited from a community workplace and consented to participate...
June 2, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29908431/smoking-ban-and-health-at-birth-evidence-from-hungary
#15
Tamás Hajdu, Gábor Hajdu
In 2012, smoking restrictions were extended to hospitality venues in Hungary. Women working in bars and restaurants were primarily affected by the intervention. In this research, we analyze the effect of this smoking ban on the outcomes of their pregnancies. Using individual live birth, fetal loss, and infant mortality registry data, we examine the probability of live birth, indicators of health at birth, and the probability of death in the first year of life. We apply a difference-in-differences framework and show that the smoking ban has improved health at birth...
June 13, 2018: Economics and Human Biology
https://www.readbyqxmd.com/read/29908422/bioprospection-of-immature-salivary-glands-of-chrysomya-megacephala-fabricius-1794-diptera-calliphoridae
#16
Ronaldo Roberto Tait Caleffe, Stefany Rodrigues de Oliveira, Adriana Aparecida Sinópolis Gigliolli, Maria Claudia Colla Ruvolo-Takasusuki, Helio Conte
Larval therapy (LT) comprises the application of sterile Calliphoridae larvae for wound debridement, disinfection, and healing in humans and animals. Larval digestion plays a key role in LT, where the salivary glands and gut produce and secrete proteolytic and antimicrobial substances. The objective of this work was to bioprospect the salivary glands of Chrysomya megacephala (Fabricius, 1794) larvae, using ultrastructural, morphological, and histological observations, and the total protein electrophoretic profile...
June 8, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29908414/synthesis-and-photophysical-properties-of-deuteration-of-pirfenidone
#17
Qiuju Yin, Yujie Chen, Meng Zhou, Xiangsheng Jiang, Junjun Wu, Yang Sun
In order to improve the metabolism of pirfenidone (5-methyl-1-phenylpyridin-2-one, PFD), the methyl-deuterated version of pirfenidone via the substitution of hydrogen (H) at C-5 by its isotope deuterium (D, 5D-PFD) was synthesized and its photophysical properties were investigated. The negative solvatochrom was observed in absorption and fluorescence spectra with increasing solvent polarity, which implied that intermolecular charge transfer (ICT) involved n → π* transition for both of PFD and 5D-PFD...
June 7, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29908401/fabrication-of-zwitterionic-histidine-layered-double-hydroxide-hybrid-nanosheets-for-highly-efficient-and-fast-removal-of-anionic-dyes
#18
Maryam Shamsayei, Yadollah Yamini, Hamid Asiabi
In this work, the bio-nanohybrids of magnesium-aluminum layered double hydroxide intercalated with zwitterionic histidine (His-LDH) was synthesized. The crystal phase, morphology, and nanostructure of the as-prepared His-LDH were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and nitrogen adsorption-desorption methods. The His-LDHs were used to remove anionic dyes, including Congo red (CR), indigo carmine (IC) and sunset yellow FCF (SY) from aqueous solutions...
June 13, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29908393/an-update-on-adolescent-sleep-new-evidence-informing-the-perfect-storm-model
#19
REVIEW
Stephanie J Crowley, Amy R Wolfson, Leila Tarokh, Mary A Carskadon
The maturation of sleep regulatory systems during adolescence in combination with psychosocial and societal pressures culminate in a "Perfect Storm" of short and ill-timed sleep and the associated consequences for many youngsters. This model, first described by Carskadon in 2011, guides our current thinking of adolescent sleep behavior. Since the original description, the field has moved forward with remarkable pace, and this review aims to summarize recent progress and describe how this new work informs our understanding of sleep regulation and sleep behavior during this developmental time frame...
June 13, 2018: Journal of Adolescence
https://www.readbyqxmd.com/read/29908391/gait-termination-on-a-declined-surface-in-trans-femoral-amputees-impact-of-using-microprocessor-controlled-limb-system
#20
Zahraa M Abdulhasan, Andy J Scally, John G Buckley
BACKGROUND: Walking down ramps is a demanding task for transfemoral-amputees and terminating gait on ramps is even more challenging because of the requirement to maintain a stable limb so that it can do the necessary negative mechanical work on the centre-of-mass in order to arrest (dissipate) forward/downward velocity. We determined how the use of a microprocessor-controlled limb system (simultaneous control over hydraulic resistances at ankle and knee) affected the negative mechanical work done by each limb when transfemoral-amputees terminated gait during ramp descent...
May 30, 2018: Clinical Biomechanics
keyword
keyword
6801
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"