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https://www.readbyqxmd.com/read/28335513/bioactive-potential-of-marine-macroalgae-from-the-central-red-sea-saudi-arabia-assessed-by-high-throughput-imaging-based-phenotypic-profiling
#1
Stephan Kremb, Constanze Müller, Philippe Schmitt-Kopplin, Christian R Voolstra
Marine algae represent an important source of novel natural products. While their bioactive potential has been studied to some extent, limited information is available on marine algae from the Red Sea. This study aimed at the broad discovery of new bioactivities from a collection of twelve macroalgal species from the Central Red Sea. We used imaging-based High-Content Screening (HCS) with a diverse spectrum of cellular markers for detailed cytological profiling of fractionated algal extracts. The cytological profiles for 3 out of 60 algal fractions clustered closely to reference inhibitors and showed strong inhibitory activities on the HIV-1 reverse transcriptase in a single-enzyme biochemical assay, validating the suggested biological target...
March 20, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28335491/health-and-wellbeing-of-occupants-in-highly-energy-efficient-buildings-a-field-study
#2
Peter Wallner, Peter Tappler, Ute Munoz, Bernhard Damberger, Anna Wanka, Michael Kundi, Hans-Peter Hutter
Passive houses and other highly energy-efficient buildings need mechanical ventilation. However, ventilation systems in such houses are regarded with a certain degree of skepticism by parts of the public due to alleged negative health effects. Within a quasi-experimental field study, we investigated if occupants of two types of buildings (mechanical vs. natural ventilation) experience different health, wellbeing and housing satisfaction outcomes and if associations with indoor air quality exist. We investigated 123 modern homes (test group: with mechanical ventilation; control group: naturally ventilated) built in the years 2010 to 2012 in the same geographic area and price range...
March 19, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335487/electromagnetic-vortex-based-radar-imaging-using-a-single-receiving-antenna-theory-and-experimental-results
#3
Tiezhu Yuan, Hongqiang Wang, Yongqiang Cheng, Yuliang Qin
Radar imaging based on electromagnetic vortex can achieve azimuth resolution without relative motion. The present paper investigates this imaging technique with the use of a single receiving antenna through theoretical analysis and experimental results. Compared with the use of multiple receiving antennas, the echoes from a single receiver cannot be used directly for image reconstruction using Fourier method. The reason is revealed by using the point spread function. An additional phase is compensated for each mode before imaging process based on the array parameters and the elevation of the targets...
March 19, 2017: Sensors
https://www.readbyqxmd.com/read/28335486/implicit-regularization-for-reconstructing-3d-building-rooftop-models-using-airborne-lidar-data
#4
Jaewook Jung, Yoonseok Jwa, Gunho Sohn
With rapid urbanization, highly accurate and semantically rich virtualization of building assets in 3D become more critical for supporting various applications, including urban planning, emergency response and location-based services. Many research efforts have been conducted to automatically reconstruct building models at city-scale from remotely sensed data. However, developing a fully-automated photogrammetric computer vision system enabling the massive generation of highly accurate building models still remains a challenging task...
March 19, 2017: Sensors
https://www.readbyqxmd.com/read/28335455/viral-protein-kinetics-of-piscine-orthoreovirus-infection-in-atlantic-salmon-blood-cells
#5
Hanne Merethe Haatveit, Øystein Wessel, Turhan Markussen, Morten Lund, Bernd Thiede, Ingvild Berg Nyman, Stine Braaen, Maria Krudtaa Dahle, Espen Rimstad
Piscine orthoreovirus (PRV) is ubiquitous in farmed Atlantic salmon (Salmo salar) and the cause of heart and skeletal muscle inflammation. Erythrocytes are important target cells for PRV. We have investigated the kinetics of PRV infection in salmon blood cells. The findings indicate that PRV causes an acute infection of blood cells lasting 1-2 weeks, before it subsides into persistence. A high production of viral proteins occurred initially in the acute phase which significantly correlated with antiviral gene transcription...
March 18, 2017: Viruses
https://www.readbyqxmd.com/read/28335453/a-spatially-offset-raman-spectroscopy-method-for-non-destructive-detection-of-gelatin-encapsulated-powders
#6
Kuanglin Chao, Sagar Dhakal, Jianwei Qin, Yankun Peng, Walter F Schmidt, Moon S Kim, Diane E Chan
Non-destructive subsurface detection of encapsulated, coated, or seal-packaged foods and pharmaceuticals can help prevent distribution and consumption of counterfeit or hazardous products. This study used a Spatially Offset Raman Spectroscopy (SORS) method to detect and identify urea, ibuprofen, and acetaminophen powders contained within one or more (up to eight) layers of gelatin capsules to demonstrate subsurface chemical detection and identification. A 785-nm point-scan Raman spectroscopy system was used to acquire spatially offset Raman spectra for an offset range of 0 to 10 mm from the surfaces of 24 encapsulated samples, using a step size of 0...
March 18, 2017: Sensors
https://www.readbyqxmd.com/read/28335424/an-alternative-wearable-tracking-system-based-on-a-low-power-wide-area-network
#7
Raul Fernández-Garcia, Ignacio Gil
This work presents an alternative wearable tracking system based on a low-power wide area network. A complete GPS receiver was integrated with a textile substrate, and the latitude and longitude coordinates were sent to the cloud by means of the SIM-less SIGFOX network. To send the coordinates over SIGFOX protocol, a specific codification algorithm was used and a customized UHF antenna on jeans fabric was designed, simulated and tested. Moreover, to guarantee the compliance to international regulations for human body exposure to electromagnetic radiation, the electromagnetic specific absorption rate of this antenna was analyzed...
March 14, 2017: Sensors
https://www.readbyqxmd.com/read/28335400/online-classification-of-contaminants-based-on-multi-classification-support-vector-machine-using-conventional-water-quality-sensors
#8
Pingjie Huang, Yu Jin, Dibo Hou, Jie Yu, Dezhan Tu, Yitong Cao, Guangxin Zhang
Water quality early warning system is mainly used to detect deliberate or accidental water pollution events in water distribution systems. Identifying the types of pollutants is necessary after detecting the presence of pollutants to provide warning information about pollutant characteristics and emergency solutions. Thus, a real-time contaminant classification methodology, which uses the multi-classification support vector machine (SVM), is proposed in this study to obtain the probability for contaminants belonging to a category...
March 13, 2017: Sensors
https://www.readbyqxmd.com/read/28335295/investigation-of-the-band-structure-of-graphene-based-plasmonic-photonic-crystals
#9
Pingping Qiu, Weibin Qiu, Zhili Lin, Houbo Chen, Yixin Tang, Jia-Xian Wang, Qiang Kan, Jiao-Qing Pan
In this paper, one-dimensional (1D) and two-dimensional (2D) graphene-based plasmonic photonic crystals (PhCs) are proposed. The band structures and density of states (DOS) have been numerically investigated. Photonic band gaps (PBGs) are found in both 1D and 2D PhCs. Meanwhile, graphene-based plasmonic PhC nanocavity with resonant frequency around 175 THz, is realized by introducing point defect, where the chemical potential is from 0.085 to 0.25 eV, in a 2D PhC. Also, the bending wvaguide and the beam splitter are realized by introducing the line defect into the 2D PhC...
September 9, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335290/the-effect-of-viscous-air-damping-on-an-optically-actuated-multilayer-mos%C3%A2-nanomechanical-resonator-using-fabry-perot-interference
#10
Yumei She, Cheng Li, Tian Lan, Xiaobin Peng, Qianwen Liu, Shangchun Fan
We demonstrated a multilayer molybdenum disulfide (MoS₂) nanomechanical resonator by using optical Fabry-Perot (F-P) interferometric excitation and detection. The thin circular MoS₂ nanomembrane with an approximate 8-nm thickness was transferred onto the endface of a ferrule with an inner diameter of 125 μm, which created a low finesse F-P interferometer with a cavity length of 39.92 μm. The effects of temperature and viscous air damping on resonance behavior of the resonator were investigated in the range of -10-80 °C...
September 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335268/optoelectronic-and-electrochemical-properties-of-vanadium-pentoxide-nanowires-synthesized-by-vapor-solid-process
#11
Ko-Ying Pan, Da-Hua Wei
Substantial synthetic vanadium pentoxide (V₂O₅) nanowires were successfully produced by a vapor-solid (VS) method of thermal evaporation without using precursors as nucleation sites for single crystalline V₂O₅ nanowires with a (110) growth plane. The micromorphology and microstructure of V₂O₅ nanowires were analyzed by scanning electron microscope (SEM), energy-dispersive X-ray spectroscope (EDS), transmission electron microscope (TEM) and X-ray diffraction (XRD). The spiral growth mechanism of V₂O₅ nanowires in the VS process is proved by a TEM image...
July 29, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335253/soft-interaction-in-liposome-nanocarriers-for-therapeutic-drug-delivery
#12
REVIEW
Domenico Lombardo, Pietro Calandra, Davide Barreca, Salvatore Magazù, Mikhail A Kiselev
The development of smart nanocarriers for the delivery of therapeutic drugs has experienced considerable expansion in recent decades, with the development of new medicines devoted to cancer treatment. In this respect a wide range of strategies can be developed by employing liposome nanocarriers with desired physico-chemical properties that, by exploiting a combination of a number of suitable soft interactions, can facilitate the transit through the biological barriers from the point of administration up to the site of drug action...
June 25, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335221/mechanochemical-synthesis-of-tio%C3%A2-nanocomposites-as-photocatalysts-for-benzyl-alcohol-photo-oxidation
#13
Weiyi Ouyang, Ewelina Kuna, Alfonso Yepez, Alina M Balu, Antonio A Romero, Juan Carlos Colmenares, Rafael Luque
TiO₂ (anatase phase) has excellent photocatalytic performance and different methods have been reported to overcome its main limitation of high band gap energy. In this work, TiO₂-magnetically-separable nanocomposites (MAGSNC) photocatalysts with different TiO₂ loading were synthesized using a simple one-pot mechanochemical method. Photocatalysts were characterized by a number of techniques and their photocatalytic activity was tested in the selective oxidation of benzyl alcohol to benzaldehyde. Extension of light absorption into the visible region was achieved upon titania incorporation...
May 18, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335218/aggregation-and-colloidal-stability-of-commercially-available-al%C3%A2-o%C3%A2-nanoparticles-in-aqueous-environments
#14
Julie Mui, Jennifer Ngo, Bojeong Kim
The aggregation and colloidal stability of three, commercially-available, gamma-aluminum oxide nanoparticles (γ-Al₂O₃ NPs) (nominally 5, 10, and 20-30 nm) were systematically examined as a function of pH, ionic strength, humic acid (HA) or clay minerals (e.g., montmorillonite) concentration using dynamic light scattering and transmission electron microscopy techniques. NPs possess pH-dependent surface charges, with a point of zero charge (PZC) of pH 7.5 to 8. When pH < PZC, γ-Al₂O₃ NPs are colloidally stable up to 100 mM NaCl and 30 mM CaCl₂...
May 13, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335188/synthesis-of-lithium-metal-oxide-nanoparticles-by-induction-thermal-plasmas
#15
Manabu Tanaka, Takuya Kageyama, Hirotaka Sone, Shuhei Yoshida, Daisuke Okamoto, Takayuki Watanabe
Lithium metal oxide nanoparticles were synthesized by induction thermal plasma. Four different systems-Li-Mn, Li-Cr, Li-Co, and Li-Ni-were compared to understand formation mechanism of Li-Me oxide nanoparticles in thermal plasma process. Analyses of X-ray diffractometry and electron microscopy showed that Li-Me oxide nanoparticles were successfully synthesized in Li-Mn, Li-Cr, and Li-Co systems. Spinel structured LiMn₂O₄ with truncated octahedral shape was formed. Layer structured LiCrO₂ or LiCoO₂ nanoparticles with polyhedral shapes were also synthesized in Li-Cr or Li-Co systems...
April 6, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335059/retrospective-evaluation-of-percutaneous-access-for-tevar-and-evar-time-to-make-it-the-standard-approach
#16
Rohit Philip Thomas, Tobias Kowald, Bernhard Schmuck, Osama Eldergash, Andreas Klausen, Valentin Dikov, Jerry Easo, Ajay Chavan
Introduction To evaluate the safety of percutaneous endovascular aortic repair and the relationship of access site characteristics to complications Materials and Methods All patients undergoing percutaneous TEVAR, EVAR and FEVAR procedures from January 2010 to May 2016 were retrospectively analysed for incidence of complications and their relationship to various access site characteristics like access artery size, degree of vessel calcification, skin to artery distance and sheath to artery ratio. Hemostasis occurring within 15 min after suture closure with or without manual compression was defined as primary hemostasis...
April 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28335058/instructions-for-radiological-case-reports
#17
Peter Bannas
Purpose This paper explains the purpose and structure of a radiological case report and provides guidance for radiologists with respect to the writing of a well-structured patient case report. Materials and Methods The current literature and the author's experience as a writer were used to create a manual that describes steps for preparing a radiological case report containing all of the important ingredients for effective communication. Results Case reports are the first line of evidence in documenting clinical observations in the literature...
April 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28335057/white-paper-curriculum-in-interventional-radiology
#18
Andreas H Mahnken, Arno Bücker, Christian Hohl, Ansgar Berlis
Purpose Scope and clinical importance of interventional radiology markedly evolved over the last decades. Consequently it was acknowledged as independent subspecialty by the "European Union of Medical Specialists" (UEMS). Based on radiological imaging techniques Interventional Radiology is an integral part of Radiology. Materials und Methods In 2009 the German Society for Interventional Radiology and minimally-invasive therapy (DeGIR) developed a structured training in Interventional Radiology. In cooperation with the German Society of Neuroradiology (DGNR) this training was extended to also cover Interventional Neuroradiology in 2012...
April 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28335044/semi-automated-de-identification-of-german-content-sensitive-reports-for-big-data-analytics
#19
Hannes Seuss, Peter Dankerl, Matthias Ihle, Andrea Grandjean, Rebecca Hammon, Nicola Kaestle, Peter A Fasching, Christian Maier, Jan Christoph, Martin Sedlmayr, Alexander Cavallaro, Matthias Hammon
Purpose Projects involving collaborations between different institutions require data security via selective de-identification of words or phrases. A semi-automated de-identification tool was developed and evaluated on different types of medical reports natively and after adapting the algorithm to the text structure. Materials and Methods A semi-automated de-identification tool was developed and evaluated for its sensitivity and specificity in detecting sensitive content in written reports. Data from 4671 pathology reports (4105 + 566 in two different formats), 2804 medical reports, 1008 operation reports, and 6223 radiology reports of 1167 patients suffering from breast cancer were de-identified...
March 23, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28335021/mri-visible-perivascular-space-location-is-associated-with-alzheimer-s-disease-independently-of-amyloid-burden
#20
Gargi Banerjee, Hee Jin Kim, Zoe Fox, H Rolf Jäger, Duncan Wilson, Andreas Charidimou, Han Kyu Na, Duk L Na, Sang Won Seo, David J Werring
Perivascular spaces that are visible on magnetic resonance imaging (MRI) are a neuroimaging marker of cerebral small vessel disease. Their location may relate to the type of underlying small vessel pathology: those in the white matter centrum semi-ovale have been associated with cerebral amyloid angiopathy, while those in the basal ganglia have been associated with deep perforating artery arteriolosclerosis. As cerebral amyloid angiopathy is an almost invariable pathological finding in Alzheimer's disease, we hypothesized that MRI-visible perivascular spaces in the centrum semi-ovale would be associated with a clinical diagnosis of Alzheimer's disease, whereas those in the basal ganglia would be associated with subcortical vascular cognitive impairment...
February 17, 2017: Brain: a Journal of Neurology
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