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https://www.readbyqxmd.com/read/29148788/temperature-dependent-empirical-parameters-for-polarity-in-choline-chloride-based-deep-eutectic-solvents
#1
Arun Valvi, Jyoti Dutta, Shraeddha Tiwari
Deep eutectic solvents have emerged as a promising and economically viable alternative to address our need for environmentally benign media. Efficient utilization of deep eutectic solvents in various fields will require adequate knowledge about their physicochemical properties. In this work, independent polarity scales pertaining to solvent polarizability, dipolarity, acidity and basicity have been determined for some commonly used deep eutectic solvents based on choline chloride. The three eutectic mixtures selected for the study include reline (1:2 mixture of choline chloride and urea), ethaline (1:2 mixture of choline chloride and ethylene glycol) and glyceline (1:2 mixture of choline chloride and glycerol)...
November 17, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29148355/vertical-integration-of-hospitals-and-physicians-economic-theory-and-empirical-evidence-on-spending-and-quality
#2
Brady Post, Tom Buchmueller, Andrew M Ryan
Hospital-physician vertical integration is on the rise. While increased efficiencies may be possible, emerging research raises concerns about anticompetitive behavior, spending increases, and uncertain effects on quality. In this review, we bring together several of the key theories of vertical integration that exist in the neoclassical and institutional economics literatures and apply these theories to the hospital-physician relationship. We also conduct a literature review of the effects of vertical integration on prices, spending, and quality in the growing body of evidence ( n = 15) to evaluate which of these frameworks have the strongest empirical support...
August 1, 2017: Medical Care Research and Review: MCRR
https://www.readbyqxmd.com/read/29147518/machine-learning-molecular-dynamics-for-the-simulation-of-infrared-spectra
#3
Michael Gastegger, Jörg Behler, Philipp Marquetand
Machine learning has emerged as an invaluable tool in many research areas. In the present work, we harness this power to predict highly accurate molecular infrared spectra with unprecedented computational efficiency. To account for vibrational anharmonic and dynamical effects - typically neglected by conventional quantum chemistry approaches - we base our machine learning strategy on ab initio molecular dynamics simulations. While these simulations are usually extremely time consuming even for small molecules, we overcome these limitations by leveraging the power of a variety of machine learning techniques, not only accelerating simulations by several orders of magnitude, but also greatly extending the size of systems that can be treated...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29146942/efficient-near-infrared-light-emitting-electrochemical-cell-nir-leec-based-on-new-binuclear-ruthenium-phenanthroimidazole-exhibiting-desired-charge-carrier-dynamics
#4
Babak Nemati Bideh, Hashem Shahroosvand
Near-infrared light-emitting electrochemical cell (NIR-LEEC) has emerged as a new and promising lighting sourcewhich could serve as low-cost alternatives in NIR light-emitting sources which are typically expensive. LECs were also shown advantages such as light weight, simplicity and low operation voltages. However, only a few examples of NIR-LEEC are reported in which external quantum efficiency(EQE) of devices limited to 0.1%. Here, we report, efficient NIR-LEEC based of two novel binuclear ruthenium phenanthroimidzole complex which differ by employing the type of ancillary ligand including 2, 2'bipyridine (bpy) (B1) and 4, 4' dimethyl bpy (B2) that realize maximum EQE of 0...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145416/two-is-better-than-one-the-effects-of-strategic-cooperation-on-intra-and-inter-brain-connectivity-by-fnirs
#5
Michela Balconi, Laurent Pezard, Jean-Louis Nandrino, Maria Elide Vanutelli
Inter-brain synchronization during joint actions is a core question in social neuroscience, and the differential contribution of intra- and inter-brain functional connectivity has yet to be clarified along with the role of psychological variables such as perceived self-efficacy. The cognitive performance and the neural activation underlying the execution of joint actions were recorded by functional Near-Infrared imaging during a synchronicity game. An 8-channel array of optodes was positioned over the frontal and prefrontal regions...
2017: PloS One
https://www.readbyqxmd.com/read/29145163/spread-of-multidrug-resistant-escherichia-coli-harboring-integron-via-swine-farm-waste-water-treatment-plant
#6
Jin-Hyeong Park, Young-Ji Kim, Binn-Kim, Kun-Ho Seo
Wastewater treatment plants (WWTPs) that release treated wastewater into the environment have emerged as a major threat to public health. In this study, we investigated Escherichia coli load and antibiotic-resistance profiles across different treatment processes at a swine farm WWTP. The frequency of the detection of class 1 and 2 integrons, and their association with antibiotic resistance, were also analyzed. Samples were obtained at each of five sampling sites that represented each processing step within the WWTP...
November 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29145139/application-and-microbial-ecology-of-psychrotrophs-in-domestic-wastewater-treatment-at-low-temperature
#7
Zhenzhen Xu, Yue Ben, Zhonglin Chen, Anxi Jiang, Jimin Shen, Xiaoyun Han
The feasibility of a bunch of screened psychrotrophs being applied to low-temperature wastewater treatment was investigated. The screened psychrophillic strains are capable of growth at a broad temperature-range from 0 to 40 °C and exhibit a preferable TTC-dehydrogenase activity at low temperature (4-10 °C). Along the sharply fluctuant temperatures (25-4-25 °C), the screened psychrotrophs (compared with the indigenous mesophiles) demonstrate less fluctuations of COD removal and more rapid recovery after temperature shocks...
October 24, 2017: Chemosphere
https://www.readbyqxmd.com/read/29145086/active-learning-for-classifying-data-streams-with-unknown-number-of-classes
#8
Saad Mohamad, Moamar Sayed-Mouchaweh, Abdelhamid Bouchachia
The classification of data streams is an interesting but also a challenging problem. A data stream may grow infinitely making it impractical for storage prior to processing and classification. Due to its dynamic nature, the underlying distribution of the data stream may change over time resulting in the so-called concept drift or the possible emergence and fading of classes, known as concept evolution. In addition, acquiring labels of data samples in a stream is admittedly expensive if not infeasible at all...
October 27, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/29144490/neonatal-lung-ultrasound-exam-guidelines
#9
D Kurepa, N Zaghloul, L Watkins, J Liu
Point-of-care ultrasound (POC-US) is increasingly used especially in emergency and critical-care medicine. It is focused, quick and does not expose patients to ionizing radiation. It encompasses all organ systems and has well-defined indications. Lung ultrasound (LUS) represents one of the most exciting applications in the field of POC-US. It is particularly important to emphasize the role of LUS in neonatology due to the specific pathology inherent in lung immaturity as well as in the particular sensitivity of neonates to repeated radiation exposure...
November 16, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29144166/imaging-assessment-of-acute-ischaemic-stroke-a-review-of-radiological-methods
#10
Aubrey Smith, Chris Rowland Hill
Acute ischaemic stroke is the second largest cause of death worldwide and a cause of major physical and psychological morbidity. Current evidence based treatment includes intravenous thrombolysis (IVT) and mechanical thrombectomy (MT), both requiring careful patient selection and to be administered as quickly as possible within a limited time window from symptom onset. Imaging plays a crucial role identifying patients who may benefit from MT or IVT whilst excluding those that maybe harmed. For IVT, imaging must as a minimum exclude haemorrhage, stroke mimics and provide an estimate of non-viable brain...
November 16, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29143770/surface-relief-gratings-in-halogen-bonded-polymer-azobenzene-complexes-a-concentration-dependence-study
#11
Jelle E Stumpel, Marco Saccone, Valentina Dichiarante, Ossi Lehtonen, Matti Virkki, Pierangelo Metrangolo, Arri Priimagi
In recent years, supramolecular complexes comprising a poly(4-vinylpyridine) backbone and azobenzene-based halogen bond donors have emerged as a promising class of materials for the inscription of light-induced surface-relief gratings (SRGs). The studies up to date have focused on building supramolecular hierarchies, i.e., optimizing the polymer-azobenzene noncovalent interaction for efficient surface patterning. They have been conducted using systems with relatively low azobenzene content, and little is known about the concentration dependence of SRG formation in halogen-bonded polymer-azobenzene complexes...
October 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29143642/a-diagnostic-algorithm-for-evaluating-cases-of-potential-macrocyclic-lactone-resistant-heartworm
#12
Andrew R Moorhead, Christopher C Evans, Ray M Kaplan
BACKGROUND: The emergence of macrocyclic lactone resistance in canine heartworm poses a substantial threat to what is currently the only effective, FDA-approved available method of prevention. Further study of the biotypes is necessary to understand the mechanism of resistance and evaluate novel prevention options. Identifying cases of drug-resistant infection remains problematic, however, especially when poor compliance and insufficient testing are concerns. Furthermore, a definitive demonstration of resistance requires experimental infection and treatment, which is prohibitively costly...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29143501/-the-place-of-balloon-pulmonary-angioplasty-in-the-management-of-chronic-thromboembolic-pulmonary-hypertension
#13
Aileen Kharat, Béatrice Duxbury, Anne-Lise Hachull, Stéphane Noble, Hélène Bouvaist, Paola M Soccal, Frédéric Lador
Chronic thromboembolic pulmonary hypertension (CTEPH) is uncommon. Its diagnosis should not be delayed as its prognosis is poor if not treated. In most cases, an acute pulmonary embolism is found in the medical history of the patient. Once suspected, a specific work-up should be performed in a pulmonary hypertension (PH) center. The ventilation/perfusion scan has a central role in this workup but the emergence of non invasive imaging technologies provides morphological and functional information which take part in the therapeutic decision making, such as operability...
November 15, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29143457/microhaplotypes-provide-increased-power-from-short-read-dna-sequences-for-relationship-inference
#14
Diana S Baetscher, Anthony J Clemento, Thomas C Ng, Eric C Anderson, John Carlos Garza
The accelerating rate at which DNA sequence data is now generated by high-throughput sequencing instruments provides both opportunities and challenges for population genetic and ecological investigations of animals and plants. We show here how the common practice of calling genotypes from a single SNP per sequenced region ignores substantial additional information in the phased short-read sequences that are provided by these sequencing instruments. We target sequenced regions with multiple SNPs in kelp rockfish (Sebastes atrovirens) to determine "microhaplotypes" and then call these microhaplotypes as alleles at each locus...
November 16, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29143232/assessment-of-gastrointestinal-nematode-infection-anthelmintic-usage-and-husbandry-practices-on-two-small-scale-goat-farms-in-malaysia
#15
Flora Wong, Neil Sargison
Haemonchosis is a common problem on goat farms in tropical countries such as Malaysia. Prevention of production losses generally depends on the use of anthelmintic drugs, but is threatened by the emergence of anthelmintic resistance. This study investigates anthelmintic efficacy on small-scale Malaysian goat farms and describes putative risk factors. Adult goats had moderate to high pre-treatment faecal trichostrongyle egg counts, despite being housed on slatted floors and fed on cut-and-carry forage, raising questions about the source of nematode infection...
November 15, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29142513/sedation-for-routine-gastrointestinal-endoscopic-procedures-a-review-on-efficacy-safety-efficiency-cost-and-satisfaction
#16
REVIEW
Otto S Lin
Most gastrointestinal endoscopic procedures are now performed with sedation. Moderate sedation using benzodiazepines and opioids continue to be widely used, but propofol sedation is becoming more popular because its unique pharmacokinetic properties make endoscopy almost painless, with a very predictable and rapid recovery process. There is controversy as to whether propofol should be administered only by anesthesia professionals (monitored anesthesia care) or whether properly trained non-anesthesia personnel can use propofol safely via the modalities of nurse-administered propofol sedation, computer-assisted propofol sedation or nurse-administered continuous propofol sedation...
October 2017: Intestinal Research
https://www.readbyqxmd.com/read/29142191/immune-neuroendocrine-interactions-evolution-ecology-and-susceptibility-to-illness
#17
Johanna M C Blom, Enzo Ottaviani
The integration between immune and neuroendocrine systems is crucial for maintaining homeostasis from invertebrates to humans. In the first, the phagocytic cell, i.e., the immunocyte, is the main actor, while in the latter, the principle player is the lymphocyte. Immunocytes are characterized by the presence of pro-opiomelanocortin (POMC) peptides, CRH, and other molecules that display a significant similarity to their mammalian counterparts regarding their functions, as both are mainly involved in fundamental functions such as immune (chemotaxis, phagocytosis, cytotoxicity, etc...
November 16, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/29141136/systemic-mrna-delivery-to-the-lungs-by-functional-polyester-based-carriers
#18
Yunfeng Yan, Hu Xiong, Xinyi Zhang, Qiang Cheng, Daniel John Siegwart
Messenger RNA (mRNA) has recently come into focus as an emerging therapeutic class with great potential for protein replacement therapy, cancer immunotherapy, regenerative medicine, vaccines, and gene editing. However, the lack of effective and safe delivery methods impedes the broad application of mRNA-based therapeutics. Here, we report a robust approach to develop efficient polymeric delivery carriers for mRNA. Lead polyesters were identified by in vitro screening of a 480-member combinatorially modified poly(trimethylolpropane allyl ether-co-suberoyl chloride) library for the delivery of luciferase encoding mRNA (Luc mRNA) to IGROV1 cells...
November 15, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29141028/developing-methods-for-assessing-abundance-and-distribution-of-european-oysters-ostrea-edulis-using-towed-video
#19
Linnea Thorngren, Thomas Dunér Holthuis, Susanne Lindegarth, Mats Lindegarth
Due to large-scale habitat losses and increasing pressures, benthic habitats in general, and perhaps oyster beds in particular, are commonly in decline and severely threatened on regional and global scales. Appropriate and cost-efficient methods for mapping and monitoring of the distribution, abundance and quality of remaining oyster populations are fundamental for sustainable management and conservation of these habitats and their associated values. Towed video has emerged as a promising method for surveying benthic communities in a both non-destructive and cost-efficient way...
2017: PloS One
https://www.readbyqxmd.com/read/29140973/a-coupled-oscillator-model-of-olfactory-bulb-gamma-oscillations
#20
Guoshi Li, Thomas A Cleland
The olfactory bulb transforms not only the information content of the primary sensory representation, but also its underlying coding metric. High-variance, slow-timescale primary odor representations are transformed by bulbar circuitry into secondary representations based on principal neuron spike patterns that are tightly regulated in time. This emergent fast timescale for signaling is reflected in gamma-band local field potentials, presumably serving to efficiently integrate olfactory sensory information into the temporally regulated information networks of the central nervous system...
November 15, 2017: PLoS Computational Biology
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