keyword
MENU ▼
Read by QxMD icon Read
search

check

keyword
https://www.readbyqxmd.com/read/28738664/bomb-swab-can-trace-explosive-particle-sampling-and-detection-be-improved
#1
Danny Fisher, Raya Zach, Yossef Matana, Paz Elia, Shiran Shustack, Yarden Sharon, Yehuda Zeiri
The marked increase in international terror in recent years requires the development of highly efficient methods to detect trace amounts of explosives at airports, border crossings and check points. The preferred analytical method worldwide is the ion mobility spectrometry (IMS) that is capable of detecting most explosives at the nano-gram level. Sample collection for the IMS analysis is based on swabbing of a passenger's belongings to collect possible explosive residues. The present study examines a wide range of issues related to swab-based particle collection and analysis, in the hope of gaining deeper understanding into this technique that will serve to improve the detection process...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738653/development-of-an-efficient-method-for-multi-residue-analysis-of-160-pesticides-in-herbal-plant-by-ethyl-acetate-hexane-mixture-with-direct-injection-to-gc-ms-ms
#2
Sherif M Taha, Sohair A Gadalla
A simple and efficient multi residue method was developed, for the analysis of 160 pesticides by GC-MS/MS in herbal plants. The developed method employs pesticide residue extraction by EtAC/ n. hexane (6:4) with a cleanup step using florisil/ PSA mixture. The optimized conditions have resulted in lower co-extracted matrix components than those extracted using EtAC or MeCN (QuEChERS method), according to FTIR and full scan GC/MS analyses. In addition, the developed method (EtAC/ Hexane) eliminates the evaporation step that is usually performed when using MeCN as an extraction solvent prior to the GC-MS/MS injection...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738648/matrix-interference-evaluation-employing-gc-and-lc-coupled-to-triple-quadrupole-tandem-mass-spectrometry
#3
S Uclés, A Lozano, A Sosa, P Parrilla Vázquez, A Valverde, A R Fernández-Alba
Gas and liquid chromatography coupled to triple quadrupole tandem mass spectrometry are currently the most powerful tools employed for the routine analysis of pesticide residues in food control laboratories. However, whatever the multiresidue extraction method, there will be a residual matrix effect making it difficult to identify/quantify some specific compounds in certain cases. Two main effects stand out: (i) co-elution with isobaric matrix interferents, which can be a major drawback for unequivocal identification, and therefore false negative detections, and (ii) signal suppression/enhancement, commonly called the "matrix effect", which may cause serious problems including inaccurate quantitation, low analyte detectability and increased method uncertainty...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738582/metaboqc-a-tool-for-correcting-untargeted-metabolomics-data-with-mass-spectrometry-detection-using-quality-controls
#4
Mónica Calderón-Santiago, María A López-Bascón, Ángela Peralbo-Molina, Feliciano Priego-Capote
Nowadays most metabolomic studies involve the analysis of large sets of samples to find a representative metabolite pattern associated to the factor under study. During a sequence of analyses the instrument signals can be subjected to the influence of experimental variability sources. Implementation of quality control (QC) samples to check the contribution of experimental variability is the most common approach in metabolomics. This practice is based on the filtration of molecular entities experiencing a variation coefficient higher than that measured in the QC data set...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738109/are-glucose-and-insulin-metabolism-and-diabetes-associated-with-migraine-a-community-based-case-control-study
#5
Xin Wang, Xin Li, YanBo Diao, ShuHan Meng, YuHang Xing, HaiBo Zhou, Dan Yang, JiaMei Sun, Hong Chen, YaShuang Zhao
AIMS: To investigate the association between glucose and insulin metabolism and migraine, as well as between diabetes mellitus (DM) and migraine, at a Chinese community level. METHODS: A community-based, case-control study was performed in Heihe City, China. A survey was conducted door to door by eight trained investigators. Migraine was diagnosed using the International Classification of Headache Disorders (ICHD-III) beta criteria. A total of 2,023 participants completed a questionnaire, underwent a physical examination, and donated fasting blood...
July 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28738097/impact-of-obsessive-compulsive-personality-disorder-symptoms-in-internet-users
#6
Samuelon R Chamberlain, Sarah A Redden, Dan J Stein, Christine Lochner, Jon E Grant
BACKGROUND: Internet use is pervasive in many cultures. Little is known about the impact of obsessive-compulsive personality disorder (OCPD) symptoms on impulsive and compulsive psychopathologies in people who use the Internet. METHODS: Adult Internet users (N = 1,323) completed an online questionnaire quantifying OCPD symptoms, likely occurrence of select mental disorders (obsessive-compulsive disorder, attention-deficit/hyperactivity disorder [ADHD], problematic Internet use, generalized anxiety disorder), and personality questionnaires of impulsivity and compulsivity...
August 1, 2017: Annals of Clinical Psychiatry: Official Journal of the American Academy of Clinical Psychiatrists
https://www.readbyqxmd.com/read/28738072/monitoring-protected-areas-from-space-a-multi-temporal%C3%A2-assessment-using-raptors-as-biodiversity-surrogates
#7
Adrián Regos, Luis Tapia, Alberto Gil-Carrera, Jesús Domínguez
Monitoring protected areas (PAs) is essential for systematic evaluation of their effectiveness in terms of habitat protection, preservation and representativeness. This study illustrates how the use of species distribution models that combine remote sensing data and information about biodiversity surrogates can contribute to develop a systematic protocol for monitoring PAs. In particular, we assessed the effectiveness of the Natura 2000 (N2000) network, for conserving and preserving the representativeness of seven raptor species in a highly-dynamic landscape in northwest Spain between 2001 and 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28737933/efficient-application-of-continuous-fractional-component-monte-carlo-in-the-reaction-ensemble
#8
Ali Poursaeidesfahani, Remco Hens, Ahmadreza Rahbari, Mahinder Ramdin, David Dubbeldam, Thijs J H Vlugt
A new formulation of the Reaction Ensemble Monte Carlo technique (RxMC) combined with the Continuous Fractional Component Monte Carlo method is presented. This method is denoted by serial Rx/CFC. The key ingredient is that fractional molecules of either reactants or reaction products are present, and that chemical reactions always involve fractional molecules. Serial Rx/CFC has the following advantages compared to other approaches: (1) one directly obtains chemical potentials of all reactants and reaction products...
July 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28737725/optimization-of-the-silver-nanoparticles-peald-process-on-the-surface-of-1-d-titania-coatings
#9
Aleksandra Radtke, Tomasz Jędrzejewski, Wiesław Kozak, Beata Sadowska, Marzena Więckowska-Szakiel, Ewa Talik, Maarit Mäkelä, Markku Leskelä, Piotr Piszczek
Plasma enhanced atomic layer deposition (PEALD) of silver nanoparticles on the surface of 1-D titania coatings, such as nanotubes (TNT) and nanoneedles (TNN), has been carried out. The formation of TNT and TNN layers enriched with dispersed silver particles of strictly defined sizes and the estimation of their bioactivity was the aim of our investigations. The structure and the morphology of produced materials were determined using X-ray photoelectron spectroscopy (XPS) and scanning electron miscroscopy (SEM)...
July 24, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28737384/physicochemical-parameters-affecting-the-electrospray-ionization-efficiency-of-amino-acids-after-acylation
#10
Jos Hermans, Sara Ongay, Vadym Markov, Rainer Bischoff
Electrospray ionization (ESI) is widely used in liquid chromatography coupled to mass spectrometry (LC-MS) for the analysis of biomolecules. However, the ESI process is still not completely understood and it is often a matter of trial and error to enhance ESI efficiency and hence the response of a given set of compounds. In this work we performed a systematic study of the ESI response of 14 amino acids that were acylated with organic acid anhydrides of increasing chain length and with polyethylene glycol (PEG) changing certain physicochemical properties in a predictable manner...
July 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28737119/passive-surveillance-of-united-kingdom-bats-for-lyssaviruses-2005-2015
#11
E L Wise, D A Marston, A C Banyard, H Goharriz, D Selden, N Maclaren, T Goddard, N Johnson, L M McElhinney, A Brouwer, J N Aegerter, G C Smith, D L Horton, A C Breed, A R Fooks
Passive surveillance for lyssaviruses in UK bats has been ongoing since 1987 and has identified 13 cases of EBLV-2 from a single species; Myotis daubentonii. No other lyssavirus species has been detected. Between 2005 and 2015, 10 656 bats were submitted, representing 18 species, creating a spatially and temporally uneven sample of British bat fauna. Uniquely, three UK cases originate from a roost at Stokesay Castle in Shropshire, England, where daily checks for grounded and dead bats are undertaken and bat carcasses have been submitted for testing since 2007...
July 24, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28736848/the-risk-of-colorectal-neoplasia-can-be-different-according-to-the-types-of-family-members-affected-by-colorectal-cancer
#12
Nam Hee Kim, Hyo-Joon Yang, Soo-Kyung Park, Jung Ho Park, Dong Il Park, Chong Il Sohn, Yoon Suk Jung
BACKGROUND: A family history of colorectal cancer (CRC) is an important risk factor for CRC, but more detailed data are needed to prepare effective screening guidelines. We aimed to evaluate the risk of colorectal neoplasia (CRN) among individuals with different relatives affected by CRC (the first-degree relatives [FDRs] or the second-degree relatives [SDRs] or the first cousins) and to assess the effects of family histories according to age groups (30-39, 40-49, and ≥50 years). METHODS: A cross-sectional study was performed on 98,562 asymptomatic examinees aged ≥ 30 years who underwent colonoscopy as part of a health check-up...
July 24, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28736580/supportive-and-non-supportive-interactions-in-families-with-a-type-2-diabetes-patient-an-integrative-review
#13
REVIEW
Birgitte B Bennich, Michael E Røder, Dorthe Overgaard, Ingrid Egerod, Lene Munch, Filip K Knop, Tina Vilsbøll, Hanne Konradsen
BACKGROUND: Type 2 diabetes and its management affect the patient and the close family potentially causing either psychological distress or increased sense of responsibility and collaboration in these families. Interactions between patient and family play an important role in maintaining lifestyle changes and diabetes self-management. The purpose of this integrative review was to summarise and assess published studies on the intra-family perspective of supportive and non-supportive interactions in families with a type 2 diabetes patient...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28736351/intraoperative-ultrasound-in-patients-undergoing-transsphoidal-surgery-for-pituitary-adenoma-a-systematic-review
#14
REVIEW
Hani J Marcus, Tom Vercauteren, Sebastien Ourselin, Neil L Dorward
BACKGROUND: Transsphenoidal surgery is the gold standard for pituitary adenoma resection. However, despite advances in microsurgical and endoscopic techniques, some pituitary adenomas can be challenging to cure. OBJECTIVE: To determine whether, in patients undergoing transsphenoidal surgery for pituitary adenoma, intraoperative ultrasound is a safe and effective technological adjunct. METHODS: The PubMed database was searched between January 1996 and January 2016 to identify relevant publications that (1) featured patients undergoing transsphenoidal surgery for pituitary adenoma, (2) used intraoperative ultrasound, and (3) reported on safety or effectiveness...
July 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28736183/immunotherapy-targeting-immune-check-point-s-in-brain-metastases
#15
Anna Maria Di Giacomo, Monica Valente, Alessia Covre, Riccardo Danielli, Michele Maio
Immunotherapy with monoclonal antibodies (mAb) directed to different immune check-point(s) is showing a significant clinical impact in a growing number of human tumors of different histotype, both in terms of disease response and long-term survival patients. In this rapidly changing scenario, treatment of brain metastases remains an high unmeet medical need, and the efficacy of immunotherapy in these highly dismal clinical setting remains to be largely demonstrated. Nevertheless, up-coming observations are beginning to suggest a clinical potential of cancer immunotherapy also in brain metastases, regardless the underlying tumor histotype...
July 13, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/28735255/ascending-aortic-diameter-and-metabolic-syndrome-in-korean-men
#16
Hyejin Chun
This study aimed to evaluate the association of ascending aortic diameter (AAD) measured by low-dose chest CT (LDCT) and metabolic syndrome (MS) in Korean men. AAD was measured with LDCT in 1046 healthy Korean men (mean age 50.7±9.7 years, range 28 to 69 years) participating in medical health check-up in a university health promotion center. AAD was defined as the longest length measured from the left main coronary ostium to the level of the right pulmonary artery in the axial plane in LDCT. The association between AAD and MS was examined using logistic regression...
July 21, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28734773/epico-4-0-total-quality-in-the-management-of-invasive-candidiasis-in-critically-ill-patients-by-analysing-the-integrated-process
#17
Rafael Zaragoza, Ricard Ferrer, Pedro Llinares, Emilio Maseda, Alejandro Rodríguez, Santiago Grau, Guillermo Quindós
BACKGROUND: A high quality integrated process in the clinical setting of non-neutropenic critically ill patients at risk for invasive candidiasis is a necessary tool to improve the management of these patients. AIMS: To identify the key points on invasive candidiasis in order to develop a set of recommendations with a high level of consensus required for the creation of a total quality integrated process for the management of non-neutropenic critically ill patients at risk of invasive candidiasis...
July 19, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28734736/analysis-of-medication-adherence-related-notes-from-a-service-oriented-community-pharmacy
#18
Matthew Witry, Rachel Parry, Randal McDonough, Michael Deninger
BACKGROUND: Medication nonadherence is a significant public health problem. Community pharmacists are positioned to intervene, however, the process is not well understood. OBJECTIVE: To classify and quantify the reasons for nonadherence documented by community pharmacists. METHODS: A retrospective content analysis of pharmacist notes related to nonadherence at a service oriented community pharmacy in the Midwest United States. Notes from the site's dispensing custom documentation software were obtained from September 1, 2014 through February 28, 2015 that were labeled "compliance", either prompted by proportion of days covered calculations or entered as a drug therapy problem...
July 15, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28734502/-validation-of-a-prevention-and-detection-procedure-for-physical-and-economic-abuse-of-the-elderly
#19
Marije Goikoetxea Iturregui, Alvaro Moro Inchartieta, Natxo Martínez Rueda
INTRODUCTION: The study carried out for the «Physical and economic abuse sign detection procedure for the elderly in the Basque Country» Pilotage and Validation is described. There barely exist appropriate and validated tools to assist the issue, and the existing ones are hardly adequate for people with cognitive deterioration; therefore, the issue's both visibility in our society and professional intervention are strained. The proposed procedure is a composed by screening tool that determines a likelihood of abuse and an evaluation of signs for determining the abuse practice...
July 19, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28734169/development-and-psychometric-validation-of-the-headache-screening-questionnaire-dutch-version
#20
Hedwig A van der Meer, Corine M Visscher, Raoul H H Engelbert, Wim M Mulleners, Maria W G Nijhuis-van der Sanden, Caroline M Speksnijder
BACKGROUND: Headache is a common disorder which may lead to substantial socio-economic loss. Treatment options include self-management strategies, medication and physiotherapy. Physiotherapists need to be able to screen for the presence of migraine and tension-type headache (TTH), so they can adjust their treatment strategies to the type of headache. A quick screening questionnaire to recognize migraine and TTH in the physiotherapy practice is needed. OBJECTIVE: The aim of this study was to create a headache screening questionnaire based on the ICHD-3 beta criteria for migraine and TTH, and to establish its content and criterion validity...
July 4, 2017: Musculoskeletal Science & Practice
keyword
keyword
27925
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"