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https://www.readbyqxmd.com/read/29149298/vector-borne-diseases-and-climate-change-a-european-perspective
#1
Jan C Semenza, Jonathan E Suk
Climate change has already impacted the transmission of a wide-range of vector-borne diseases in Europe, and it will continue to do so in the coming decades. Climate change has been implicated in the observed shift of ticks to elevated altitudes and latitudes, notably including the Ixodes ricinus tick species which is a vector for Lyme borreliosis and tick-borne encephalitis. Climate change is also thought to have been a factor in the expansion of other important disease vectors in Europe: Aedes albopictus (the Asian tiger mosquito), which transmits diseases such as Zika, dengue, and chikungunya, and Phlebotomus sandfly species, which transmits diseases including Leishmaniasis...
November 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29148742/identification-of-the-peptide-pyroq-%C3%AE-casein194-209-as-a-highly-specific-and-sensitive-marker-to-differentiate-between-ultrahigh-temperature-processed-uht-milk-and-mildly-heated-milk
#2
Sevim Dalabasmaz, Jennifer Ebner, Monika Pischetsrieder
In this study, a new approach was introduced to identify marker peptides that reflect the thermal treatment of commercial milk samples and differentiate ultrahigh-temperature processed (UHT) milk from mildly heated milk. Peptide profiles of training set samples, pasteurized (n=20), extended shelf life (n=29), and UHT (n=29) milk, were recorded by MALDI-TOF-MS after StageTip micro-extraction. As marker candidates, 13 peptides were selected and their cutoff levels were defined. The quality of the cutoff levels was then tested with a blind test set...
November 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29148179/clinical-implications-of-de-barsy-syndrome
#3
Lindsay L Warner, David A Olsen, Hugh M Smith
BACKGROUND: De Barsy syndrome is a rare, autosomal recessive syndrome characterized by cutis laxa, progeroid appearance, ophthalmic opacification, skeletal malformations, growth delays, and intellectual disability. AIMS: The aim of this case series is to identify the anesthetic considerations in the clinical management of patients with de Barsy syndrome. METHODS: A retrospective case review from 1968 to 2016 was performed at a single tertiary medical center to identify patients with de Barsy syndrome who underwent anesthesia for diagnostic and surgical procedures...
November 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29147507/gelation-driven-selection-in-dynamic-covalent-c-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000
#4
Chunshuang Liang, Sirinan Kulchat, Shimei Jiang, Jean-Marie Lehn
Knoevenagel barbiturate derivatives bearing long alkyl chains were proven to form organogels in suitable solvents based on supramolecular interactions. Their reaction with imines allows for component exchange through CC/CN recombination. The effect of various parameters (solvents, chain length, and temperature) on the CC/CN exchange reaction has been studied. Mixing Knoevenagel compound K and imine I-16 in a 1 : 1 ratio generated a constitutional dynamic library containing the four constituents K, I-16, K'-16, and I'...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29146362/ozone-treatment-for-pesticide-removal-from-carrots-optimization-by-response-surface-methodology
#5
Lauana Pellanda de Souza, Lêda Rita D'Antonino Faroni, Fernanda Fernandes Heleno, Frederico Garcia Pinto, Maria Eliana Lopes Ribeiro de Queiroz, Lucas Henrique Figueiredo Prates
The present study aimed to optimize ozone (O3) treatments, as gas and dissolved in water, to remove difenoconazole and linuron in carrots. We employed a central composite design to study three variables governing the efficacy of treatments: O3 concentration, temperature and treatment time. The temperature did not influence the efficacy of treatments. The removal percentage of pesticides increases with increases in ozone concentration and the time of treatment. O3 application promoted the removal of more than 80% of pesticides when the roots were exposed for approximately 120min at 5 and 10mgL(-1), respectively, in treatments with O3 as gas and dissolved in water...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29145052/a-comparison-of-personal-exposure-to-air-pollutants-in-different-travel-modes-on-national-highways-in-india
#6
Soma Sekhara Rao Kolluru, Aditya Kumar Patra, Satya Prakash Sahu
People often travel a long distance on highways to the nearest city for professional/business activities. However, relatively few publications on passenger exposure to pollutants on highways in India or elsewhere are available. The aim of this study was to examine the contribution of different travel modes to passengers' pollutant exposure for a long distance travel on a national highway in India. We measured PM2.5 and CO exposure levels of the passengers over 200km on a national highway using two portable air monitors, EVM-7 and EPAM-5000...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29143792/polyphosphates-as-inhibitors-for-poly-vinyl-chloride-photodegradation
#7
Dina S Ahmed, Gamal A El-Hiti, Emad Yousif, Ayad S Hameed
Three polyphosphates were used as inhibitors for poly(vinyl chloride) (PVC) photodegradation. The polyphosphates were added to PVC at a concentration of 0.5% by weight. The PVC films (40 µm thickness) were irradiated at room temperature with ultraviolet (UV) light for up to 300 h. The changes in PVC films after irradiation were monitored by Fourier transform infrared spectroscopy, weight loss, viscosity-average molecular weight determination, and atomic force microscopy. These changes were very noticeable in the blank PVC films compared to the ones obtained when additives were used...
October 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29143032/reaction-monitoring-reveals-poisoning-mechanism-of-pd2-dba-3-and-guides-catalyst-selection
#8
Chiara Colletto, Jordi Burés, Igor Larrosa
We have discovered that the dba ligand in the commonly used Pd2(dba)3·CHCl3 cross-coupling pre-catalyst is susceptible to bis-arylation when used in the presence of aryl iodides. The in situ formed dbaAr2 ligands result in Pd-species with altered catalytic activity. In the case of study, the room temperature C3 arylation of benzo[b]thiophenes with aryl iodides, we have observed a marked catalyst deactivation when dba is arylated with electron-deficient aryl iodides, accounting for the poor yields obtained in the C3 arylation reactions with these aryl iodides...
November 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29142807/silver-nanoparticle-human-hemoglobin-interface-time-evolution-of-the-corona-formation-and-interaction-phenomenon
#9
A K Bhunia, T Kamilya, S Saha
In this paper, we have used spectroscopic and electron microscopic analysis to monitor the time evolution of the silver nanoparticles (Ag NP)-human hemoglobin (Hb) corona formation and to characterize the interaction of the Ag NPs with Hb. The time constants for surface plasmon resonance binding and reorganization are found to be 9.51 and 118.48 min, respectively. The drop of surface charge and the increase of the hydrodynamic diameter indicated the corona of Hb on the Ag NP surface. The auto correlation function is found to broaden with the increasing time of the corona formation...
2017: Nano Convergence
https://www.readbyqxmd.com/read/29142185/anesthesia-procedure-for-congenital-insensitivity-to-pain-in-a-child-with-anhidrosis-syndrome-a-rare-case
#10
Aykut Urfalioglu, Mahmut Arslan, Yakup Duman, Gökce Gisi, Gözen Oksuz, Hüseyin Yildiz, Hafize Oksuz, Ayşe Balaban
Congenital insensitivity to pain with anhidrosis (CIPA) syndrome is a neuropathy characterized by insensitivity to pain, impaired thermoregulation, anhidrosis, and mental retardation. A 9-year old boy with CIPA syndrome, underwent 2 operations for a calcaneal ulcer. During the first operation standard monitorization was performed. In the second operation, Bispectral Index (BIS) monitoring was added and temperature was monitored with an esophageal probe. In the first operation, in which anesthesia induction was applied with ketamine and midazolam, extremity movements with surgical stimuli were seen...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/29141883/thermal-history-and-gape-of-individual-mytilus-californianus-correlate-with-oxidative-damage-and-thermoprotective-osmolytes
#11
Lani U Gleason, Luke P Miller, Jacob R Winnikoff, George N Somero, Paul H Yancey, Dylan Bratz, W Wesley Dowd
The ability of animals to cope with environmental stress depends - in part - on past experience, yet knowledge of the factors influencing an individual's physiology in nature remains underdeveloped. We used an individual monitoring system to record body temperature and valve gaping behavior of rocky intertidal zone mussels (Mytilus californianus). Thirty individuals were selected from two mussel beds (wave-exposed and wave-protected) that differ in thermal regime. Instrumented mussels were deployed at two intertidal heights (near the lower and upper edges of the mussel zone) and in a continuously submerged tidepool...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141711/application-of-gas-chromatography-coupled-to-quadrupole-orbitrap-mass-spectrometry-for-pesticide-residue-analysis-in-cereals-and-feed-ingredients
#12
Marc Tienstra, Hans G J Mol
A method for residue analysis of pesticides and polychlorinated biphenyls in cereals and feed ingredients based on QuEChERS extraction, programmed temperature vaporizer large-volume injection, and GC with electron ionization (EI) quadrupole Orbitrap full-scan high-resolution MS (60 000 full width at half-maximum at m/z 200) has been developed. In addition to full-scan acquisition, simultaneous full-scan and selected-ion monitoring acquisition was used to improve detectability in incidental cases in which analytes coeluted with intense signals from coextractants...
November 16, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29141146/the-effect-of-pressure-and-temperature-on-mid-infrared-sensing-of-dissolved-hydrocarbons-in-water
#13
Charles Heath, Matthew B Myers, Bobby Pejcic
Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy using a polymer coated internal reflection element/waveguide is an established sensor platform for the detection of a range of organic and hydrocarbon molecules dissolved in water. The polymer coating serves two purposes: to concentrate hydrocarbons from the aqueous phase and to exclude water along with other interfering molecules from the surface of the internal reflection element. Crucial to reliable quantification and analytical performance is the calibration of the ATR-FTIR sensor which is commonly performed in water under mild ambient conditions (i...
November 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29139261/-study-on-suitable-distribution-areas-of-sichuan-safflower-in-sichuan-province-based-on-3s-technologies
#14
Wu-Xue Cheng, Guang Dong, Ming-Yan Wu, Lan He, Jia-Li Chen
Sichuan safflower (Carthamus tinctorius) is a traditional Chinese medicine for promoting blood circulation and removing blood stasis. In this paper, taking Sichuan province as an example, based on TM image, digital elevation model (DEM), meteorology, soil and other data, and using remote sensing and GIS technology to extract grassland, elevation, temperature and precipitation, soil and other influencing factors, the spatial distribution of the suitability of safflower was studied, and the field investigation was carried out...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29138095/kinetics-and-thermodynamics-of-the-thermal-inactivation-and-chaperone-assisted-folding-of-zebrafish-dihydrofolate-reductase
#15
Charu Thapliyal, Neha Jain, Naira Rashid, Pratima Chaudhuri
The maintenance of thermal stability is a major issue in protein engineering as many proteins tend to form inactive aggregates at higher temperatures. Zebrafish DHFR, an essential protein for the survival of cells, shows irreversible thermal unfolding transition. The protein exhibits complete unfolding and loss of activity at 50 °C as monitored by UV-Visible, fluorescence and far UV-CD spectroscopy. The heat induced inactivation of zDHFR follows first-order kinetics and Arrhenius law. The variation in the value of inactivation rate constant, k with increasing temperatures depicts faster inactivation at elevated temperatures...
November 11, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29137768/low-frequency-ultrasonic-assisted-hydrolysis-of-starch-in-the-presence-of-%C3%AE-amylase
#16
Anne Gaquere-Parker, Tamera Taylor, Raihannah Hutson, Ashley Rizzo, Aubrey Folds, Shastina Crittenden, Neelam Zahoor, Bilal Hussein, Aaron Arruda
Hydrolysis of starch is an important process in the food industry and in the production of bioethanol or smaller carbohydrate molecules that can be used as starting blocks for chemical synthesis. Such hydrolysis can be enhanced by lowering the pH, heating the reaction mixture or catalyzing the reaction with enzymes. This study reports the effect of sonication on the reaction rate of starch hydrolysis at different temperatures, in the presence or absence of alpha-amylase. Starch Azure, a commercially available potato starch covalently linked with Remazol Brilliant Blue, has been chosen since its hydrolysis releases a blue dye, which concentration can be monitored by UV Vis spectroscopy...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137670/modelling-and-mapping-tick-dynamics-using-volunteered-observations
#17
Irene Garcia-Martí, Raúl Zurita-Milla, Arnold J H van Vliet, Willem Takken
BACKGROUND: Tick populations and tick-borne infections have steadily increased since the mid-1990s posing an ever-increasing risk to public health. Yet, modelling tick dynamics remains challenging because of the lack of data and knowledge on this complex phenomenon. Here we present an approach to model and map tick dynamics using volunteered data. This approach is illustrated with 9 years of data collected by a group of trained volunteers who sampled active questing ticks (AQT) on a monthly basis and for 15 locations in the Netherlands...
November 14, 2017: International Journal of Health Geographics
https://www.readbyqxmd.com/read/29137641/improving-e-coli-growth-performance-by-manipulating-small-rna-expression
#18
REVIEW
Alejandro Negrete, Joseph Shiloach
Efficient growth of E. coli, especially for production of recombinant proteins, has been a challenge for the biotechnological industry since the early 1970s. By employing multiple approaches, such as different media composition, various growth strategies and specific genetic manipulations, it is now possible to grow bacteria to concentrations exceeding 100 g/L and to achieve high concentrations of recombinant proteins. Although the growth conditions are carefully monitored and maintained, it is likely that during the growth process cells are exposed to periodic stress conditions, created by fluctuations in pH, dissolved oxygen, temperature, glucose, and salt concentration...
November 14, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/29137193/gas-measurement-using-static-fourier-transform-infrared-spectrometers
#19
Michael H Köhler, Michael Schardt, Markus S Rauscher, Alexander W Koch
Online monitoring of gases in industrial processes is an ambitious task due to adverse conditions such as mechanical vibrations and temperature fluctuations. Whereas conventional Fourier transform infrared (FTIR) spectrometers use rather complex optical and mechanical designs to ensure stable operation, static FTIR spectrometers do not require moving parts and thus offer inherent stability at comparatively low costs. Therefore, we present a novel, compact gas measurement system using a static single-mirror Fourier transform spectrometer (sSMFTS)...
November 13, 2017: Sensors
https://www.readbyqxmd.com/read/29137136/incorporation-of-fiber-bragg-sensors-for-shape-memory-polyurethanes-characterization
#20
Nélia Alberto, Maria A Fonseca, Victor Neto, Rogério Nogueira, Mónica Oliveira, Rui Moreira
Shape memory polyurethanes (SMPUs) are thermally activated shape memory materials, which can be used as actuators or sensors in applications including aerospace, aeronautics, automobiles or the biomedical industry. The accurate characterization of the memory effect of these materials is therefore mandatory for the technology's success. The shape memory characterization is normally accomplished using mechanical testing coupled with a heat source, where a detailed knowledge of the heat cycle and its influence on the material properties is paramount but difficult to monitor...
November 11, 2017: Sensors
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