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https://www.readbyqxmd.com/read/29348058/elemental-assessment-of-vegetation-via-portable-x-ray-fluorescence-pxrf-spectrometry
#1
Candice McGladdery, David C Weindorf, Somsubhra Chakraborty, Bin Li, Laura Paulette, Dorina Podar, Delaina Pearson, Nana Yaw O Kusi, Bogdan Duda
Elemental concentrations in vegetation are of critical importance, whether establishing plant essential element concentrations (toxicity vs. deficiency) or investigating deleterious elements (e.g., heavy metals) differentially extracted from the soil by plants. Traditionally, elemental analysis of vegetation has been facilitated by acid digestion followed by quantification via inductively coupled plasma (ICP) or atomic absorption (AA) spectroscopy. Previous studies have utilized portable X-ray fluorescence (PXRF) spectroscopy to quantify elements in soils, but few have evaluated the vegetation...
January 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29332606/tricuspid-flow-and-regurgitation-in-congenital-heart-disease-and-pulmonary-hypertension-comparison-of-4d-flow-cardiovascular-magnetic-resonance-and-echocardiography
#2
Mieke M P Driessen, Marjolijn A Schings, Gertjan Tj Sieswerda, Pieter A Doevendans, Erik H Hulzebos, Marco C Post, Repke J Snijder, Jos J M Westenberg, Arie P J van Dijk, Folkert J Meijboom, Tim Leiner
BACKGROUND: Tricuspid valve (TV) regurgitation (TR) is a common complication of pulmonary hypertension and right-sided congenital heart disease, associated with increased morbidity and mortality. Estimation of TR severity by echocardiography and conventional cardiovasvular magnetic resonance (CMR) is not well validated and has high variability. 4D velocity-encoded (4D-flow) CMR was used to measure tricuspid flow in patients with complex right ventricular (RV) geometry and varying degrees of TR...
January 15, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29329966/-overview-of-the-knowledge-and-attitudes-of-physicians-in-brazzaville-on-obstructive-sleep-apnea-syndrome
#3
E L P Bemba, A R Ouedraogo, G C Ngouoni, R G Bopaka, P P Koumeka, K B Ossale Abacka, J Mboussa
INTRODUCTION: Obstructive sleep apnea syndrome (OSAS) is the leading sleep-related breathing disorder. Its complications and its repercussions on the quality of life of patients make the OSAS a real public health problem. The objective of this study is to both asses physicians knowledge of OSAS and describe their attitudes towards suspect subjects in Brazzaville. MATERIAL AND METHOD: This was a cross-sectional study of 230 doctors practicing in various hospitals in the city of Brazzaville...
January 9, 2018: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/29329387/patients-with-acephalic-spermatozoa-syndrome-linked-to-sun5-mutations-have-a-favorable-pregnancy-outcome-from-icsi
#4
Jianzheng Fang, Jingjing Zhang, Fuxi Zhu, Xiaoyu Yang, Yugui Cui, Jiayin Liu
STUDY QUESTION: Are Sad1 and UNC84 domain containing 5 (SUN5) mutations associated with the outcomes of ICSI in patients with acephalic spermatozoa syndrome (ASS)? SUMMARY ANSWER: Despite highly abnormal sperm morphology, ASS patients with SUN5 mutations have a favorable pregnancy outcome following ICSI. WHAT IS KNOWN ALREADY: ASS is a rare cause of infertility characterized by the production of a majority of headless spermatozoa, along with a small proportion of intact spermatozoa with an abnormal head-tail junction...
January 10, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29325458/a-diagnostic-test-accuracy-meta-analysis-of-maternal-serum-ischemia-modified-albumin-for-detection-of-preeclampsia
#5
Varikasuvu Seshadri Reddy, Munikumar Manne, Pragathi Duggina, Neelakant Varma
BACKGROUND/AIMS: Ischemia-modified albumin (IMA) has been widely accepted as a serological biomarker. IMA has been proposed as a simple and novel marker of oxidative stress in preeclampsia (PE). This systematic review and diagnostic test accuracy meta-analysis aims to evaluate the diagnostic accuracy of this novel serological biomarker, IMA to detect PE. METHODS: A systematic search of major databases was performed to identify all published diagnostic accuracy studies on IMA...
January 11, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29324913/the-detection-of-endocarditis-post-implantation-grafts-arteritis-and-other-related-disorders-by-18f-fdg-pet-ct
#6
Jelena Šaponjski, Dragana Šobić-Šaranović, Strahinja Odalović, Milica Stojiljković, Jelena Pantović, Nebojša Petrović, Isidora Grozdić-Milojević, Vera Artiko
INTRODUCTION: Positron emission tomography with computed tomography (18F-FDG PET/CT) is a nuclear medicine diagnostic method which, unlike other technological modalities that asses anatomical features, detects increased glucose metabolism inside the cells, thus is very helpful in diagnosing cardiovascular infection and inflammation and also in therapy planning. AIM: Aim of this study was to assess the significance of 18F-FDG PET/CT in detection of an active disease in patients with infection and inflammation of cardiovascular system...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29320563/field-effectiveness-of-highly-pathogenic-avian-influenza-h5n1-vaccination-in-commercial-layers-in-indonesia
#7
Simson Tarigan, Michael Haryadi Wibowo, Risa Indriani, Sumarningsih Sumarningsih, Sidna Artanto, Syafrison Idris, Peter A Durr, Widya Asmara, Esmaeil Ebrahimie, Mark A Stevenson, Jagoda Ignjatovic
Although vaccination of poultry for control of highly pathogenic avian influenza virus (HPAIV) H5N1 has been practiced during the last decade in several countries, its effectiveness under field conditions remains largely unquantified. Effective HPAI vaccination is however essential in preventing incursions, silent infections and generation of new H5N1 antigenic variants. The objective of this study was to asses the level and duration of vaccine induced immunity in commercial layers in Indonesia. Titres of H5N1 haemagglutination inhibition (HI) antibodies were followed in individual birds from sixteen flocks, age 18-68 week old (wo)...
2018: PloS One
https://www.readbyqxmd.com/read/29320232/barriers-to-the-adoption-of-wearable-sensors-in-the-workplace-a-survey-of-occupational-safety-and-health-professionals
#8
Mark C Schall, Richard F Sesek, Lora A Cavuoto
OBJECTIVE: To gather information on the (a) types of wearable sensors, particularly personal activity monitors, currently used by occupational safety and health (OSH) professionals; (b) potential benefits of using such technologies in the workplace; and (c) perceived barriers preventing the widespread adoption of wearable sensors in industry. BACKGROUND: Wearable sensors are increasingly being promoted as a means to improve employee health and well-being, and there is mounting evidence supporting their use as exposure assessment and personal health tools...
January 1, 2018: Human Factors
https://www.readbyqxmd.com/read/29319511/study-of-patterns-and-markers-of-human-immune-deficiency-virus-1-hiv-1-progression-and-unemployment-rate-among-patients-from-alexandria-egypt
#9
Faika M Ghoneim, May M Raouf, Noha S Elshaer, Sarah M Abdelhamid, Reem A Noor Eldeen
Middle East and North Africa (MENA) new HIV cases show the highest increase among all regions in the world. Even though Egypt has a low prevalence among the general population (< 0.02%), a national HIV epidemic occurs in certain population risk groups. The current study was conducted to asses clinical and immunological disease progression; following up viral load (VL) and detecting delta-32 CCR5 genotype polymorphism in selected cases, determining unemployment rate and identify predictors of employment for HIV-cases...
December 4, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/29315588/the-health-nutrition-dimension-a-methodological-approach-to-asses-the-nutritional-sustainability-of-the-typical-agro-food-products-and-the-mediterranean-diet
#10
Elena Azzini, Giuseppe Maiani, Aida Turrini, Federica Intorre, Gabriella Lo Feudo, Roberto Capone, Francesco Bottalico, Hamid El Bilali, Angela Polito
BACKGROUND: The aim of this paper is to work out a methodological approach for the evaluation nutritional sustainability of typical agro-food products, representing the Mediterranean eating habits and included in the Mediterranean food pyramid. RESULTS: For each group of foods, were identified different suitable and easily measurable indicators. Two macro-indicators were used to assess the nutritional sustainability of each product. The first macro-indicator called "business distinctiveness" takes into account the application of different regulations and standards regarding quality, safety and traceability as well as the origin of raw materials...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29297546/genetic-polymorphism-in-mmp9-may-be-associated-with-anterior-open-bite-in-children
#11
Erika Calvano Küchler, Driely Barreiros, Raphaela Oliveira da Silva, Júlia Guimarães Barcellos de Abreu, Ellen Cardoso Teixeira, Raquel Assed Bezerra da Silva, Lea Assed Bezerra da Silva, Paulo Nelson Filho, Fábio Lourenço Romano, José Mauro Granjeiro, Lívia Azeredo Alves Antunes, Leonardo Santos Antunes
Anterior open bite (AOB) has a multifactorial etiology caused by the interaction of sucking habits and genetic factors. The aim of this study was to evaluate the association between AOB and polymorphisms in genes that encode Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs). Four hundred and seventy-two children that presented at least one sucking habit were evaluated. Children were examined clinically for the presence of AOB. Genomic DNA was extracted from saliva. Genotyping of the selected polymorphisms in MMP2, MMP3, MMP9, TIMP1 and TIMP2 was carried out by real-time PCR using the TaqMan method...
May 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29290790/changes-in-the-microarchitecture-of-the-pancreatic-cancer-stroma-are-linked-to-neutrophil-dependent-reprogramming-of-stellate-cells-and-reflected-by-diffusion-weighted-magnetic-resonance-imaging
#12
Philipp Mayer, Christine Dinkic, Ralf Jesenofsky, Miriam Klauss, Peter Schirmacher, Ulrike Dapunt, Thilo Hackert, Florian Uhle, G Maria Hänsch, Matthias M Gaida
In pancreatic cancer (PDAC) intratumor infiltration of polymorphonuclear neutrophils (PMN) is associated with histologically apparent alterations of the tumor growth pattern. The aim of this study was to examine possible associations between PMN infiltration, tumor microarchitecture, and water diffusivity in diffusion-weighted magnetic resonance imaging (DW-MRI), and to further asses the underlying mechanisms. Methods: DW-MRI was performed in 33 PDAC patients prior to surgery. In parallel, tissue specimen were examined histologically for growth pattern, azurocidin-positive PMN infiltrates, and the presence of alpha-smooth muscle actin (α-SMA) and metalloproteinase 9 (MMP9)-positive myofibroblastic cells...
2018: Theranostics
https://www.readbyqxmd.com/read/29287021/does-computed-tomography-have-the-ability-to-differentiate-aggressive-from-nonaggressive-solid-pseudopapillary-neoplasm
#13
Ashita Rastogi, Mathew Assing, Mellisa Taggart, Brinda Rao, Jia Sun, Khaled Elsayes, Eric Tamm, Priya Bhosale
OBJECTIVE: The aim of the study was to assess the ability of contrast-enhanced computed tomography (CECT) to differentiate aggressive from nonaggressive solid pseudopapillary neoplasms (SPNs). MATERIALS AND METHODS: Forty treatment-naive patients with pathologically proven pancreatic SPNs were included. Imaging characteristics were determined by consensus of 3 radiologists blinded to histopathologic aggressiveness. All patients underwent 4-phase CECT using a pancreatic protocol...
December 28, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29281969/functional-expression-of-ccl8-and-its-interaction-with-chemokine-receptor-ccr3
#14
Baosheng Ge, Jiqiang Li, Zhijin Wei, Tingting Sun, Yanzhuo Song, Naseer Ullah Khan
BACKGROUND: Chemokines and their cognate receptors play important role in the control of leukocyte chemotaxis, HIV entry and other inflammatory diseases. Developing an effcient method to investigate the functional expression of chemokines and its interactions with specific receptors will be helpful to asses the structural and functional characteristics as well as the design of new approach to therapeutic intervention. RESULTS: By making systematic optimization study of expression conditions, soluble and functional production of chemokine C-C motif ligand 8 (CCL8) in Escherichia coli (E...
December 28, 2017: BMC Immunology
https://www.readbyqxmd.com/read/29278264/a-sprinkling-experiment-to-quantify-celerity-velocity-differences-at-the-hillslope-scale
#15
Willem J van Verseveld, Holly R Barnard, Chris B Graham, Jeffrey J McDonnell, J Renée Brooks, Markus Weiler
Few studies have quantified the differences between celerity and velocity of hillslope water flow and explained the processes that control these differences. Here, we asses these differences by combining a 24-day hillslope sprinkling experiment with a spatially explicit hydrologic model analysis. We focused our work on Watershed 10 at the H. J. Andrews Experimental Forest in western Oregon. Celerities estimated from wetting front arrival times were generally much faster than average vertical velocities of δ2H...
2017: Hydrol Earth Syst Sci
https://www.readbyqxmd.com/read/29277031/antimony-and-arsenic-partitioning-during-fe2-induced-transformation-of-jarosite-under-acidic-conditions
#16
Niloofar Karimian, Scott G Johnston, Edward D Burton
Jarosite [KFe3(SO4)2(OH)6] is considered a potent scavenger for arsenic (As) and antimony (Sb) under oxidizing conditions. Fluctuations in water levels in re-flooded acid sulfate soils (ASS) can lead to high Fe2+(aq) concentrations (∼10-20 mM) in the soil solution under acidic to circumneutral pH conditions. This may create favorable conditions for the Fe2+-induced transformation of jarosite. In this study, synthetic arsenate [As(V)]/antimonate [Sb(V)]-bearing jarosite was subjected to Fe2+(aq) (20 mM) at pH 4...
December 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/29274025/simplified-approach-of-gokyigit-s-technique-for-complete-cranial-nerve-third-palsy
#17
Ebru Demet Aygit, Asli İnal, O Bulut Ocak, Selcen Celik, Korhan Fazıl, Burcin Kepez Yildiz, Muhittin Taskapili, Birsen Gokyigit
PURPOSE: To evaluate a simpler approach of the medial transposition of split lateral rectus technique in patients with complete third nerve palsy. METHODS: All eyes with complet third nerve palsy were followed in our Strabismus Department between 2014 and 2016. All patients had complete oculamotor nerve palsy. All patients assed routine ophthalmologic examination. Also the ocular deviation, horizontal and vertical ocular alignments were measured at 6 m and at 1/3 m using the Krimsky corneal reflection test and alternate prism cover test with best optical correction...
December 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29273671/how-is-defensive-medicine-understood-and-experienced-in-a-primary-care-setting-a-qualitative-focus-group-study-among-danish-general-practitioners
#18
Elisabeth Assing Hvidt, Jesper Lykkegaard, Line Bjørnskov Pedersen, Kjeld Møller Pedersen, Anders Munck, Merethe Kousgaard Andersen
OBJECTIVES: Recent years have witnessed a progressive increase in defensive medicine (DM) in several Western welfare countries. In Danish primary and secondary care, documentation on the extent of DM is lacking. Before investigating the extent of DM, we wanted to explore how the phenomenon is understood and experienced in the context of general practice in Denmark. The objective of the study was to describe the phenomenon of DM as understood and experienced by Danish general practitioners (GPs)...
December 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/29258562/leishmania-infantum-5-methylthioadenosine-phosphorylase-presents-relevant-structural-divergence-to-constitute-a-potential-drug-target
#19
Hela Abid, Emna Harigua-Souiai, Thouraya Mejri, Mourad Barhoumi, Ikram Guizani
BACKGROUND: The 5'-methylthioadenosine phosphorylase (MTAP), an enzyme involved in purine and polyamine metabolism and in the methionine salvage pathway, is considered as a potential drug target against cancer and trypanosomiasis. In fact, Trypanosoma and Leishmania parasites lack de novo purine pathways and rely on purine salvage pathways to meet their requirements. Herein, we propose the first comprehensive bioinformatic and structural characterization of the putative Leishmania infantum MTAP (LiMTAP), using a comparative computational approach...
December 19, 2017: BMC Structural Biology
https://www.readbyqxmd.com/read/29248839/infrared-and-raman-spectroscopy-study-of-ass-chalcogenide-films-prepared-by-plasma-enhanced-chemical-vapor-deposition
#20
Leonid Mochalov, Dominik Dorosz, Mikhail Kudryashov, Aleksey Nezhdanov, Dmitry Usanov, Daniela Gogova, Sergey Zelentsov, Aleksey Boryakov, Alexandr Mashin
AsS chalcogenide films, where As content is 60-40at.%, have been prepared via a RF non-equilibrium low-temperature argon plasma discharge, using volatile As and S as the precursors. Optical properties of the films were studied in UV-visible-NIR region in the range from 0.2 to 2.5μm. Infrared and Raman spectroscopy have been employed for the elucidation of the molecular structure of the newly developed material. It was established that PECVD films possess a higher degree of transparency (up to 80%) and a wider transparency window (>20μm) in comparison with the "usual" AsS thin films, prepared by different thermal methods, which is highly advantageous for certain applications...
December 13, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
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