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https://www.readbyqxmd.com/read/28727229/volatile-organic-compound-detection-as-a-potential-means-of-diagnosing-cutaneous-wound-infections
#1
Mohammed Ashrafi, Matt Bates, Mohamed Baguneid, Teresa Alonso-Rasgado, Riina Rautemaa-Richardson, Ardeshir Bayat
Chronic cutaneous wound infections and surgical site infections (SSIs) present a huge burden on the healthcare system and can lead to increased morbidity and mortality. Current diagnostic methods of identifying and confirming infection involve culture-based and molecular methods. Both techniques are time consuming and delays commonly lead to un-targeted empirical treatment. An ideal diagnostic method would be non-invasive and highly sensitive and detect pathogenic organisms with a high degree of accuracy in order to allow targeted treatment...
July 20, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28723713/somatotopic-fascicular-lesions-of-the-brachial-plexus-demonstrated-by-high-resolution-magnetic-resonance-neurography
#2
Tim Hilgenfeld, Johann Jende, Daniel Schwarz, Philipp Bäumer, Jennifer Kollmer, Sabine Heiland, Martin Bendszus, Mirko Pham
OBJECTIVES: The aim of this study was to evaluate whether high-resolution brachial plexus (BP) magnetic resonance neurography (MRN) is capable of (1) distinguishing patients with compressive neuropathy or noncompressive plexopathy from age- and sex-matched controls, (2) discriminating between patients with compressive neuropathy and noncompressive plexopathy, and (3) detecting spatial lesion patterns suggesting somatotopic organization of the BP. MATERIALS AND METHODS: Thirty-six patients (50...
July 18, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28720469/value-of-intraoperative-ultrasound-with-conventional-probes-and-its-usefulness-in-surgical-and-therapeutic-management-of-patients
#3
A M Novo Amado, M Fraga Sánchez, J González Ramírez, G Calvo Arrojo, C Vidal Cameán, J M Crespo Teijeiro
OBJECTIVE: To prove both the reliability and the applications presented by intraoperative ultrasonography (IOUS) in surgical and therapeutic management of diverse pathologies and the possibility of doing it by using conventional equipment. MATERIAL AND METHODS: Single-center retrospective study of 145 IOUS performed by using conventional equipment in 135 patients between January 2011 and June 2016. We assessed the organs studied by ultrasound, underlying conditions of patients, preoperative imaging and the degree of matching them with the histological findings...
July 15, 2017: Radiología
https://www.readbyqxmd.com/read/28718293/functional-design-of-dielectric-metal-dielectric-based-thin-film-encapsulation-with-heat-transfer-and-flexibility-for-flexible-displays
#4
Jeong Hyun Kwon, Seungyeop Choi, Yongmin Jeon, Hyuncheol Kim, Ki Soo Chang, Kyung Cheol Choi
In this study, a new and efficient dielectric-metal-dielectric-based thin-film encapsulation (DMD-TFE) with an inserted Ag thin film is proposed to guarantee the reliability of flexible displays by improving the barrier properties, mechanical flexibility, and heat dissipation, considered as essential requirements for OLED encapsulation. The DMD-TFE, which is composed of Al2O3, Ag, and a silica nanoparticle-embedded sol-gel hybrid nanocomposite, shows a water vapor transmission rate of 8.70 × 10-6 g/m2/day and good mechanical reliability at a bending radius of 30 mm corresponding to 0...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28715771/a-flow-through-aqueous-standard-generation-system-for-thin-film-microextraction-investigations-of-uv-filters-and-biocides-partitioning-to-different-environmental-compartments
#5
Fardin Ahmadi, Chris Sparham, Janusz Pawliszyn
In this paper problems associated with preparation of aqueous standard of highly hydrophobic compounds such as partial precipitation, being lost on the surfaces, low solubility in water and limited sample volume for accurate determination of their distribution coefficients are addressed. The following work presents two approaches that utilize blade thin film microextraction (TFME) to investigate partitioning of UV filters and biocides to humic acid (dissolved organic carbon) and sediment. A steady-state concentration of target analytes in water was generated using a flow-through aqueous standard generation (ASG) system...
July 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28715105/a-simulation-based-approach-to-measuring-team-situational-awareness-in-emergency-medicine-a-multicenter-observational-study
#6
Elizabeth D Rosenman, Aurora J Dixon, Jessica M Webb, Sarah Brolliar, Simon J Golden, Kerin A Jones, Sachita Shah, James A Grand, Steve W J Kozlowski, Georgia T Chao, Rosemarie Fernandez
OBJECTIVES: Team situational awareness (TSA) is critical for effective teamwork and supports dynamic decision-making in unpredictable, time-pressured situations. Simulation provides a platform for developing and assessing TSA; but these efforts are limited by suboptimal measurement approaches. The objective of this study was to develop and evaluate a novel approach to TSA measurement in interprofessional emergency medicine teams. METHODS: We performed a multicenter, prospective, simulation-based observational study to evaluate an approach to TSA measurement...
July 17, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28714695/double-protected-all-inorganic-perovskite-nanocrystals-by-crystalline-matrix-and-silica-for-triple-modal-anti-counterfeiting-codes
#7
Leimeng Xu, Jiawei Chen, Jizhong Song, Jianhai Li, Jie Xue, Yuhui Dong, Bo Cai, Qingsong Shan, Boning Han, Haibo Zeng
Novel fluorescence with highly covert and reliable features is quite desirable to combat the sophisticated counterfeiters. Herein, we report a simultaneously triple-modal fluorescent characteristic of CsPbBr3@Cs4PbBr6/SiO2 by the excitation of thermal, ultraviolet (UV) and infrared (IR) light for the first time, which can be applied for the multiple modal anti-counterfeiting codes. The diphasic structure CsPbBr3@Cs4PbBr6 nanocrystals (NCs) were synthesized via the typical re-precipitation method followed by uniformly encapsulation into silica microspheres...
July 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28713261/age-related-decline-in-the-variation-of-dynamic-functional-connectivity-a-resting-state-analysis
#8
Yuanyuan Chen, Weiwei Wang, Xin Zhao, Miao Sha, Ya'nan Liu, Xiong Zhang, Jianguo Ma, Hongyan Ni, Dong Ming
Normal aging is typically characterized by abnormal resting-state functional connectivity (FC), including decreasing connectivity within networks and increasing connectivity between networks, under the assumption that the FC over the scan time was stationary. In fact, the resting-state FC has been shown in recent years to vary over time even within minutes, thus showing the great potential of intrinsic interactions and organization of the brain. In this article, we assumed that the dynamic FC consisted of an intrinsic dynamic balance in the resting brain and was altered with increasing age...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28712952/a-robust-high-throughput-fungal-biosensor-assay-for-the-detection-of-estrogen-activity
#9
Christoph Zutz, Karen Wagener, Desislava Yankova, Stefanie Eder, Erich Möstl, Marc Drillich, Kathrin Rychli, Martin Wagner, Joseph Strauss
Estrogenic active compounds are present in a variety of sources and may alter biological functions in vertebrates. Therefore, it is crucial to develop innovative analytical systems that allow us to screen a broad spectrum of matrices and deliver fast and reliable results. We present the adaptation and validation of a fungal biosensor for the detection of estrogen activity in cow derived samples and tested the clinical applicability for pregnancy diagnosis in 140 mares and 120 cows. As biosensor we used a previously engineered genetically modified strain of the filamentous fungus Aspergillus nidulans, which contains the human estrogen receptor alpha and a reporter construct, in which β-galactosidase gene expression is controlled by an estrogen-responsive-element...
July 13, 2017: Steroids
https://www.readbyqxmd.com/read/28712364/the-structure-of-schizotypal-personality-traits-a-cross-national-study
#10
E Fonseca-Pedrero, M Debbané, J Ortuño-Sierra, R C K Chan, D C Cicero, L C Zhang, C Brenner, E Barkus, R J Linscott, T Kwapil, N Barrantes-Vidal, A Cohen, A Raine, M T Compton, E B Tone, J Suhr, J Muñiz, A Fumero, S Giakoumaki, I Tsaousis, A Preti, M Chmielewski, J Laloyaux, A Mechri, M A Lahmar, V Wuthrich, F Larøi, J C Badcock, A Jablensky
BACKGROUND: Schizotypal traits are considered a phenotypic-indicator of schizotypy, a latent personality organization reflecting a putative liability for psychosis. To date, no previous study has examined the comparability of factorial structures across samples originating from different countries and cultures. The main goal was to evaluate the factorial structure and reliability of the Schizotypal Personality Questionnaire (SPQ) scores by amalgamating data from studies conducted in 12 countries and across 21 sites...
July 17, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28711981/universal-direct-pcr-amplification-system-a-time-and-cost-effective-tool-for-high-throughput-applications
#11
Anis Ben-Amar, Souheib Oueslati, Ahmed Mliki
Taking into account the limits of current genotyping methodologies, we have established a versatile direct PCR method on intact microtissue samples without prior DNA isolation. A simple and standard protocol was developed and validated on a wide range of living organisms including bacterial and fungal strains, plant species and human samples. This allows reliable amplification of target genomic DNA fragment directly from source material using minimal amount of tissue which makes DNA purification irrelevant for a number of biological applications...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28710632/process-for-biotransformation-of-androsta-4-ene-3-17-dione-4-ad-to-androsta-1-4-diene-3-17-dione-add
#12
Surya Prakash, Abhay Bajaj
Androsta-1,4-diene-3,17-dione (androstadienedione, ADD) is key intermediate for the organic synthesis of a variety of female sex hormones such as estrone, estradiol, estriol and other related derivatives. De novo synthesis of this molecule is not yet reported in any form of living system, i.e., microbial, plant, and animal. The structural complexities due to presence of several chiral carbon centers create significant hurdles in chemical synthesis of such molecules. Microbe-mediated biotransformation offer a highly reliable, cost-effective, and relatively non hazardous way for commercial manufacturing of steroidal key intermediates...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28707713/controllable-organic-resistive-switching-achieved-by-one-step-integration-of-cone-shaped-contact
#13
Haifeng Ling, Mingdong Yi, Masaru Nagai, Linghai Xie, Laiyuan Wang, Bo Hu, Wei Huang
Conductive filaments (CFs)-based resistive random access memory possesses the ability of scaling down to sub-nanoscale with high-density integration architecture, making it the most promising nanoelectronic technology for reclaiming Moore's law. Compared with the extensive study in inorganic switching medium, the scientific challenge now is to understand the growth kinetics of nanoscale CFs in organic polymers, aiming to achieve controllable switching characteristics toward flexible and reliable nonvolatile organic memory...
July 14, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28699065/n-protonated-isomers-and-coulombic-barriers-to-dissociation-of-doubly-protonated-ala8arg
#14
Fredrik Haeffner, Karl K Irikura
Collision-induced dissociation (or tandem mass spectrometry, MS/MS) of a protonated peptide results in a spectrum of fragment ions that is useful for inferring amino acid sequence. This is now commonplace and a foundation of proteomics. The underlying chemical and physical processes are believed to be those familiar from physical organic chemistry and chemical kinetics. However, first-principles predictions remain intractable because of the conflicting necessities for high accuracy (to achieve qualitatively correct kinetics) and computational speed (to compensate for the high cost of reliable calculations on such large molecules)...
July 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28698576/multimodal-imaging-quality-control-of-epithelia-regenerated-with-cultured-human-donor-corneal-limbal-epithelial-stem-cells
#15
Marco Lombardo, Sebastiano Serrao, Vanessa Barbaro, Enzo Di Iorio, Giuseppe Lombardo
Current imaging techniques for the characterization of differentiated corneal limbal stem cells are destructive and cannot be used in eye bank for monitoring the regenerated epithelium in culture. We presented a minimally invasive, multimodal, marker-free imaging method for the investigation of epithelia regenerated with cultured human donor corneal limbal epithelial stem cells. Two-photon fluorescence and harmonic generation signals were collected from specimens in culture and used for evaluating the structure and morphology of epithelia cultured on two different bio-scaffolds; in addition, donor human corneal tissues were used as controls...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28696692/evaluating-force-field-performance-in-thermodynamic-calculations-of-cyclodextrin-host-guest-binding-water-models-partial-charges-and-host-force-field-parameters
#16
Niel M Henriksen, Michael K Gilson
Computational prediction of noncovalent binding free energies with methods based on molecular mechanical force fields has become increasingly routine in drug discovery projects, where they promise to speed the discovery of small molecule ligands to bind targeted proteins with high affinity. Because the reliability of free energy methods still has significant room for improvement, new force fields, or modifications of existing ones, are regularly introduced with the aim of improving the accuracy of molecular simulations...
July 11, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28694528/balancing-hole-and-electron-conduction-in-ambipolar-split-gate-thin-film-transistors
#17
Hocheon Yoo, Matteo Ghittorelli, Dong-Kyu Lee, Edsger C P Smits, Gerwin H Gelinck, Hyungju Ahn, Han-Koo Lee, Fabrizio Torricelli, Jae-Joon Kim
Complementary organic electronics is a key enabling technology for the development of new applications including smart ubiquitous sensors, wearable electronics, and healthcare devices. High-performance, high-functionality and reliable complementary circuits require n- and p-type thin-film transistors with balanced characteristics. Recent advancements in ambipolar organic transistors in terms of semiconductor and device engineering demonstrate the great potential of this route but, unfortunately, the actual development of ambipolar organic complementary electronics is currently hampered by the uneven electron (n-type) and hole (p-type) conduction in ambipolar organic transistors...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28693207/-99m-tc-lhrh-in-tumor-receptor-imaging
#18
Dawei Hao, Lingfei Sun, Xiang Hu, Xiaowen Hao
Detection of gonadotropin-releasing hormone (GnRH) also known as luteinizing hormone-releasing hormone (LHRH) in the relevant tumor tissue and normal tissues and organs in vivo expression was investigated. To examine the method of direct radio labeling of LHRH by (99m)Tc with relatively high radiochemical purity and stability, screening the best labeling conditions, to establish a simple and reliable method of preparation of (99m)Tc-LHRH was undertaken. The detection of radioisotope-labeled LHRH distribution in mice, LHRH receptor imaging for the study and treatment of cancer basis were evaluated...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28691670/non-occlusive-mesenteric-ischemia-nomi-in-parkinson-s-disease-case-report
#19
G Salamone, C Raspanti, L Licari, N Falco, G Rotolo, G Augello, G Melfa, G Gulotta
Non-occlusive mesenteric ischemia (NOMI) is a severe pathological condition characterized by signs and symptoms of bowel obstruction, intestinal necrosis resulting from acute and/or chronic inadequate blood perfusion, in the absence of an organic vascular obstruction detectable by imaging techniques. A 64 years old man case with a history of Parkinson's disease in high-functioning levodopa treatment is presented. Clinical and radiological signs of intestinal obstruction were observed. He underwent surgical operation with total colectomy and terminal ileostomy for generalized secondary peritonitis due to perforation of sigmoid colon...
March 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28688844/performance-of-granular-activated-carbon-to-remove-micropollutants-from-municipal-wastewater-a-meta-analysis-of-pilot-and-large-scale-studies
#20
REVIEW
Frank Benstoem, Andreas Nahrstedt, Marc Boehler, Gregor Knopp, David Montag, Hansruedi Siegrist, Johannes Pinnekamp
For reducing organic micropollutants (MP) in municipal wastewater effluents, granular activated carbon (GAC) has been tested in various studies. We did systematic literature research and found 44 studies dealing with the adsorption of MPs (carbamazepine, diclofenac, sulfamethoxazole) from municipal wastewater on GAC in pilot- and large-scale plants. Within our meta-analysis we plot the bed volumes (BV [m(3)water/m(3)GAC]) until the breakthrough criterion of MP-BV20% was reached, dependent on potential relevant parameters (empty bed contact time EBCT, influent DOC DOC0 and manufacturing method)...
June 29, 2017: Chemosphere
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