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https://www.readbyqxmd.com/read/28646248/-psychiatric-care-of-refugees-in-africa-and-the-middle-east-challenges-and-solutions
#1
REVIEW
K Adorjan, S Mulugeta, M Odenwald, D M Ndetei, A H Osman, M Hautzinger, S Wolf, M Othman, J I Kizilhan, O Pogarell, T G Schulze
Violence, flight, famine, and natural disasters as well as the absence of a psychosocial healthcare system are major psychological burdens for refugees. The level of provision of mental healthcare is particularly low in developing countries. Internally displaced people and refugees place high demands on the healthcare system because they often suffer from psychiatric disorders, such as depression, posttraumatic stress disorder, and substance use disorders. We present first initiatives to improve psychiatric care in refugee camps in Ethiopia, Kenya, and Sudan...
June 23, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28645788/effects-of-acute-altered-gravity-during-parabolic-flight-and-or-vestibular-loss-on-cell-proliferation-in-the-rat-dentate-gyrus
#2
Yiwen Zheng, Catherine M Gliddon, Phillip Aitken, Lucy Stiles, Marie-Laure Machado, Bruno Philoxene, Pierre Denise, Paul F Smith, Stephane Besnard
Both parabolic flight, i.e. a condition of altered gravity, and loss of vestibular function, have been suggested to affect spatial learning and memory, which is known to be influenced by neurogenesis in the hippocampus. In this study we investigated whether short alternated micro- and hyper-gravity stimulations during parabolic flight and/or loss of vestibular function, would alter cell proliferation in the hippocampal dentate gyrus of rats, by measuring the number of bromodeoxyuridine (BrdU)-incorporated cells...
June 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28645755/microwave-assisted-micellar-extraction-of-organic-and-inorganic-iodines-using-zwitterionic-surfactants
#3
Shu-Ling Wang, Ling Yi, Li-Hong Ye, Jun Cao, Li-Jing Du, Li-Qing Peng, Jing-Jing Xu, Qi-Dong Zhang
Zwitterionic surfactant, used as extractant in microwave-assisted extraction (MAE) was investigated for the first time to extract organic and inorganic iodines from kelp samples. Optimized conditions for the MAE were 200W of microwave irradiation power, 100°C of extraction temperature, 10min of microwave irradiation time, 1g of sample, and 20mL of solvent volume. Ultrahigh-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF/MS) was used for the quantitative and qualitative analyses of the iodines...
June 17, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28644981/chemical-profiling-and-antioxidant-evaluation-of-yangxinshi-tablet-by-hplc-esi-q-tof-ms-ms-combined-with-dpph-assay
#4
Junfeng Zhu, Xiaojiao Yi, Jinghui Zhang, Shuqing Chen, Yongjiang Wu
Yangxinshi Tablet (YXST) is a Chinese patent medicine commonly used to treat cardiovascular diseases. However, its detailed chemical basis and mechanisms of action have not been clarified. In this study, high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-ESI-Q-TOF-MS) was applied for comprehensive analysis of the chemical constituents in YXST. A total of 127 compounds, including 19 phenolic acids, 12 alkaloids, 51 flavanoids, 32 triterpenoids, 2 lignans, 2 phenylethanoid glycosides, 2 anthraquinones, 1 coumarin, and 6 other compounds, were identified or tentatively deduced by comparing their retention times and MS spectra with those of authentic standards or literature data...
June 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28644879/identification-of-a-novel-fungus-trichoderma-asperellum-gdfs1009-and-comprehensive-evaluation-of-its-biocontrol-efficacy
#5
Qiong Wu, Ruiyan Sun, Mi Ni, Jia Yu, Yaqian Li, Chuanjin Yu, Kai Dou, Jianhong Ren, Jie Chen
Due to its efficient broad-spectrum antimicrobial activity, Trichoderma has been established as an internationally recognized biocontrol fungus. In this study, we found and identified a novel strain of Trichoderma asperellum, named GDFS1009. The mycelium of T. asperellum GDFS1009 exhibits a high growth rate, high sporulation capacity, and strong inhibitory effects against pathogens that cause cucumber fusarium wilt and corn stalk rot. T. asperellum GDFS1009 secretes chitinase, glucanase, and protease, which can degrade the cell walls of fungi and contribute to mycoparasitism...
2017: PloS One
https://www.readbyqxmd.com/read/28644613/impact-of-thermal-decomposition-on-thermal-desorption-instruments-advantage-of-thermogram-analysis-for-quantifying-volatility-distributions-of-organic-species
#6
Harald Stark, Reddy L N Yatavelli, Samantha L Thompson, Hyungu Kang, Jordan Edward Krechmer, Joel R Kimmel, Brett B Palm, Weiwei Hu, Patrick L Hayes, Douglas A Day, Pedro Campuzano-Jost, Manjula R Canagaratna, John T Jayne, Douglas R Worsnop, Jose L Jimenez
We present results from a high-resolution chemical ionization time-of-flight mass spectrometer (HRToF-CIMS), operated with two different thermal desorption inlets, designed to characterize the gas and aerosol composition. Data from two field campaigns at forested sites are shown. Particle volatility distributions are estimated using three different methods: thermograms, elemental formulas, and measured partitioning. Thermogram-based results are consistent with those from an aerosol mass spectrometer (AMS) with a thermal denuder, implying that thermal desorption is reproducible across very different experimental setups...
June 23, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28643853/qualitative-analysis-of-polyphenols-in-macroporous-resin-pretreated-pomegranate-husk-extract-by-hplc-qtof-ms
#7
Rahima Abdulla, Sanawar Mansur, Haizhong Lai, Ablikim Ubul, Guangying Sun, Guozheng Huang, Haji Akber Aisa
INTRODUCTION: Pomegranate (Punica granatum L.) husk is a traditional herbal medicine abundant in phenolic compounds and plays some roles in the treatment of oxidative stress, bacterial and viral infection, diabetes mellitus, and acute and chronic inflammation. OBJECTIVE: Identification and determination of polyphenols in macroporous resin pretreated pomegranate husk extract by high performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (HPLC-QTOF-MS)...
June 23, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28643788/terahertz-saturable-absorbers-from-liquid-phase-exfoliation-of-graphite
#8
Vezio Bianchi, Tian Carey, Leonardo Viti, Lianhe Li, Edmund H Linfield, A Giles Davies, Alessandro Tredicucci, Duhee Yoon, Panagiotis G Karagiannidis, Lucia Lombardi, Flavia Tomarchio, Andrea C Ferrari, Felice Torrisi, Miriam S Vitiello
Saturable absorbers (SA) operating at terahertz (THz) frequencies can open new frontiers in the development of passively mode-locked THz micro-sources. Here we report the fabrication of THz SAs by transfer coating and inkjet printing single and few-layer graphene films prepared by liquid phase exfoliation of graphite. Open-aperture z-scan measurements with a 3.5 THz quantum cascade laser show a transparency modulation ∼80%, almost one order of magnitude larger than that reported to date at THz frequencies...
June 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28643517/a-novel-strategy-for-comprehensive-profiling-and-identification-of-acidic-glycosphingolipids-using-ultra-high-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-mass-spectrometry
#9
Ting Hu, Zhixin Jia, Jinlan Zhang
Acidic glycosphingolipids (AGSLs), which mainly consist of ganglioside and sulfatide moieties, are highly concentrated in the central nervous system. Comprehensive profiling of AGSLs has historically been challenging because of their high complexity and the lack of standards. In this paper, a novel strategy was developed to comprehensively profile AGSLs using ultra-high-performance liquid chromatography-quadrupole time of flight mass spectrometry (UPLC-Q-TOF-MS). Ganglioside isomers with different glycan chains such as GD1a/ GD1b were completely separated on a C18 column for the first time to our knowledge, facilitated by the addition of formic acid in the mobile phase...
June 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28643515/structures-of-degradation-products-and-degradation-pathways-of-aflatoxin-b1-by-high-voltage-atmospheric-cold-plasma-hvacp-treatment
#10
Hu Shi, Bruce R Cooper, Richard L Stroshine, Klein E Ileleji, Kevin Keener
High voltage atmospheric cold plasma (HVACP) is a novel non-thermal decontamination technology that has potential for use in the food industry. In this study, HVACP was applied to treat pure aflatoxin B1 (AFB1) powder on a glass slide. AFB1 was degraded by 76% using a 5 min HVACP treatment in air having 40% relative humidity. The degradation products of AFB1 were separated and their molecular formulas were elucidated using liquid chromatography time of flight mass spectrometry (HPLC-TOF MS). Six main degradation products were observed...
June 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28643493/identification-of-viridans-streptococci-with-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-by-an-in-house-method-and-a-commercially-available-system
#11
Catalina Suzana Stingu, Klaus Eschrich, Juliane Thiel, Toralf Borgmann, Reiner Schaumann, Arne C Rodloff
Two matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS)-based methods were compared for their ability to identify viridans streptococci. One approach employed a reference database and software developed in-house. All inhouse measurements were performed using an Autoflex II Instrument (Bruker Daltonics GmbH, Germany). The other system, a VITEK-MS (BioMérieux, France) was operated on the commercially available V2.0 Knowledge Base for Clinical Use database. Clinical isolates of viridans streptococci (n=184) were examined...
September 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28642581/molecular-methods-to-detect-spodoptera-frugiperda-in-ghana-and-implications-for-monitoring-the-spread-of-invasive-species-in-developing-countries
#12
Matthew J W Cock, Patrick K Beseh, Alan G Buddie, Giovanni Cafá, Jayne Crozier
Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) is a polyphagous pest indigenous throughout the Americas, which recently appeared in Africa, first reported from São Tomé, Nigeria, Bénin and Togo in 2016, and which we now report from Ghana. This species is recognised to comprise two morphologically identical but genetically distinct strains or species in the Americas, and we found both to be present in Ghana. We discuss possible routes of entry to Africa, of which the likeliest is adults and/or egg masses transported on direct commercial flights between the Americas and West Africa, followed by dispersal by adult flight within Africa...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642430/avian-egg-shape-form-function-and-evolution
#13
Mary Caswell Stoddard, Ee Hou Yong, Derya Akkaynak, Catherine Sheard, Joseph A Tobias, L Mahadevan
Avian egg shape is generally explained as an adaptation to life history, yet we currently lack a global synthesis of how egg-shape differences arise and evolve. Here, we apply morphometric, mechanistic, and macroevolutionary analyses to the egg shapes of 1400 bird species. We characterize egg-shape diversity in terms of two biologically relevant variables, asymmetry and ellipticity, allowing us to quantify the observed morphologies in a two-dimensional morphospace. We then propose a simple mechanical model that explains the observed egg-shape diversity based on geometric and material properties of the egg membrane...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28641689/you-re-the-flight-surgeon
#14
(no author information available yet)
Solana NM. You're the flight surgeon: black spot poison ivy. Aerosp Med Hum Perform. 2017; 88(7):700-702.
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641688/you-re-the-flight-surgeon
#15
(no author information available yet)
Mitchell AL. You're the flight surgeon: aviator with myocardial ischemia. Aerosp Med Hum Perform. 2017; 88(7):697-700.
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641687/preparing-safety-cases-for-operating-outside-prescriptive-fatigue-risk-management-regulations
#16
Philippa Gander, Jim Mangie, Lora Wu, Margo van den Berg, Leigh Signal, Adrienne Phillips
INTRODUCTION: Transport operators seeking to operate outside prescriptive fatigue management regulations are typically required to present a safety case justifying how they will manage the associated risk. This paper details a method for constructing a successful safety case. METHODS: The method includes four elements: 1) scope (prescriptive rules and operations affected); 2) risk assessment; 3) risk mitigation strategies; and 4) monitoring ongoing risk. A successful safety case illustrates this method...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641686/a-case-study-of-human-roll-tilt-perception-in-hypogravity
#17
Torin K Clark, Laurence R Young
BACKGROUND: Increased gravito-inertial acceleration, or hypergravity, such as produced in a centrifuge or in an aircraft coordinated turn, causes humans to systematically overestimate their roll tilt in the dark. This is known as the "G-excess" illusion. We have previously modified a mathematical observer model of dynamic orientation perception to replicate these illusory tilt perceptions. This modified model also made a novel, previously untested, prediction that humans would underestimate acute roll tilt in reduced gravitational environments (hypogravity)...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641682/health-effects-of-airline-cabin-environments-in-simulated-8-hour-flights
#18
(no author information available yet)
INTRODUCTION: Commercial air travel is usually without health incidents. However, there is a view that cabin environments may be detrimental to health, especially flights of 8 h or more. Concerns have been raised about deep vein thrombosis, upper respiratory tract infections, altitude sickness, and toxins from the engines. METHODS: Passenger cabin simulators were used to achieve a comparative observational study with 8-h flights at pressures equivalent to terrestrial altitudes of ground, 4000, 6000, and 8000 ft...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641681/the-effects-of-training-on-anxiety-and-task-performance-in-simulated-suborbital-spaceflight
#19
Rebecca S Blue, Frederick Bonato, Kimberly Seaton, Andrea Bubka, Johnené L Vardiman, Charles Mathers, Tarah L Castleberry, James M Vanderploeg
INTRODUCTION: In commercial spaceflight, anxiety could become mission-impacting, causing negative experiences or endangering the flight itself. We studied layperson response to four varied-length training programs (ranging from 1 h-2 d of preparation) prior to centrifuge simulation of launch and re-entry acceleration profiles expected during suborbital spaceflight. We examined subject task execution, evaluating performance in high-stress conditions. We sought to identify any trends in demographics, hemodynamics, or similar factors in subjects with the highest anxiety or poorest tolerance of the experience...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641460/variability-in-strength-of-red-yeast-rice-supplements-purchased-from-mainstream-retailers
#20
Pieter A Cohen, Bharathi Avula, Ikhlas A Khan
The United States Food and Drug Administration (FDA) has introduced manufacturing standards for dietary supplements, including red yeast rice, to assure their identity, purity, strength, and composition. One supplement commonly used to self-treat high cholesterol, red yeast rice, may contain monacolin K, an ingredient identical to prescription lovastatin. We examined whether FDA's manufacturing standards led to standard concentrations of the statin monacolin K in red yeast rice supplements. We analyzed 28 brands of red yeast rice supplements by ultra-high performance liquid chromatography-diode array detector-quadrupole time-of-flight mass spectrometry for monacolin K content...
January 1, 2017: European Journal of Preventive Cardiology
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