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https://www.readbyqxmd.com/read/28749596/climate-change-climate-justice-and-environmental-health-implications-for-the-nursing-profession
#1
Patrice K Nicholas, Suellen Breakey
PURPOSE: Climate change is an emerging challenge linked to negative outcomes for the environment and human health. Since the 1960s, there has been a growing recognition of the need to address climate change and the impact of greenhouse gas emissions implicated in the warming of our planet. There are also deleterious health outcomes linked to complex climate changes that are emerging in the 21st century. This article addresses the social justice issues associated with climate change and human health and discussion of climate justice...
July 27, 2017: Journal of Nursing Scholarship
https://www.readbyqxmd.com/read/28749538/fast-further-purification-of-diastereomeric-salts-of-a-nonracemic-acid-by-gas-antisolvent-fractionation
#2
Márton Kőrösi, János Madarász, Tamás Sohajda, Edit Székely
A novel, green possibility of the further purification of the diastereomeric salt of 4-chloromandelic acid and 1-phenylethane-1-amine was developed. Gas antisolvent method using supercritical carbon dioxide was applied for the first time to precipitate the diastereomeric salts with increased purity followed by the supercritical fluid extraction of the dissolved diastereomers. The RR-salt can be purified to >99%, while fractionation-based purification of the SR-salt is limited to ~80%. The limiting initial diastereomeric excess correlates strongly with the atmospheric melting eutectic composition of the same salts, which suggests that despite the fast precipitation, the diastereomeric excess of the solid product is not kinetically determined...
July 27, 2017: Chirality
https://www.readbyqxmd.com/read/28749516/computational-prediction-of-high-methane-storage-capacity-in-v-mof-74
#3
Seokwon Hyeon, Young-Chul Kim, Jihan Kim
The methane adsorption properties in M-MOF-74 (M = Mg, Ti, V, Cr, Mn, Co, Ni, Cu, and Zn) were investigated for potential adsorbed natural gas (ANG) vehicle applications. In particular, density functional theory (DFT) simulations were conducted to derive the force field parameters that were used in the grand canonical Monte Carlo (GCMC) simulations to obtain the methane adsorption isotherm curves. Our results indicate that commonly used DFT exchange correlation functionals (e.g. vdW-DF, vdW-DF2, PBE+D2) overestimated the methane binding strength to the metal sites, leading to inaccurate description of the adsorption properties...
July 27, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28749445/a-metabolomics-guided-exploration-of-the-phytochemical-constituents-of-vernonia-fastigiata-with-the-aid-of-pressurized-hot-water-extraction-and-liquid-chromatography-mass-spectrometry
#4
Keabetswe Masike, Bradley S Khoza, Paul A Steenkamp, Elize Smit, Ian A Dubery, Ntakadzeni E Madala
Vernonia fastigiata is a multi-purpose nutraceutical plant with interesting biological properties. However, very little is known about its phytochemical composition and, thus the need for its phytochemical characterization. In the current study, an environmentally friendly method, pressurized hot water extraction (PHWE), was used to extract metabolites from the leaves of V. fastigiata at various temperatures (50 °C, 100 °C, 150 °C and 200 °C). Ultra-high performance liquid chromatography-quadrupole time of flight mass spectrometry (UHPLC-qTOF-MS) analysis in combination with chemometric methods, particularly principal component analysis (PCA) and liquid/gas chromatography mass spectrometry (XCMS) cloud plots, were used to descriptively visualize the data and identify significant metabolites extracted at various temperatures...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28749308/evaluation-of-the-effects-of-sternal-versus-lateral-recumbency-on-trends-of-selected-physiologic-parameters-during-isoflurane-anesthesia-in-zoo-housed-black-tailed-prairie-dogs-cynomys-ludovicianus
#5
David Eshar, Diane Mason, Nili Avni-Magen, Elizabeth Kaufman, Avital Paz, Hugues Beaufrère
Isoflurane gas anesthesia is often used for immobilization of prairie dogs in field studies, laboratory research, and veterinary clinical purposes. The goals of this prospective study were to evaluate the effects of sternal versus right lateral recumbency on trends of selected physiologic parameters during isoflurane anesthesia in black-tailed prairie dogs ( Cynomys ludovicianus ). Fourteen adult, zoo-housed black-tailed prairie dogs were tested during the study. Animals were anesthetized using isoflurane and randomly placed in either sternal or right lateral recumbency to evaluate changes in trends of physiologic parameters, measured selectively every 30 min throughout a 60-min anesthesia period...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749274/evaluation-of-the-i-stat-portable-clinical-analyzer-for-measurement-of-ionized-calcium-and-selected-blood-chemistry-values-in-asian-elephants-elephas-maximus
#6
Danielle K Tarbert, Erica Behling-Kelly, Heather Priest, Sara Childs-Sanford
Thei-STAT® portable clinical analyzer (PCA) provides patient-side results for hematologic, biochemical, and blood gas values when immediate results are desired. This analyzer is commonly used in nondomestic animals; however, validation of this method in comparison with traditional benchtop methods should be performed for each species. In this study, the i-STAT PCA was compared with the Radiometer ABL 800 Flex benchtop analyzer using 24 heparinized whole blood samples obtained from healthy E. maximus . In addition, the effect of sample storage was evaluated on the i-STAT PCA...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749223/anesthesia-gas-monitors-function-and-general-troubleshooting
#7
Becky Crossley
No abstract text is available yet for this article.
July 2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/28748736/identification-of-bioactive-constituents-from-different-fractions-of-stems-of-cuscuta-reflexa-roxb-using-gc-ms
#8
Diptirani Rath, Sandeep Kumar Panigrahi, Durga Madhab Kar, Laxmidhar Maharana
The GC-MS analysis of fractions of methanol extract of stem of Cuscuta reflexa (Family Convolvulaceae) was carried out using a THERMO TRACE 1300 Gas Chromatograph equipped and coupled to a mass detector THERMO TSQ 8000 spectrometer with an TG 5MS (30 m × 0.25 mm, 0.25 μm) of capillary column. Database of National Institute of Standards and Technology (NIST) library was used to identify the components. GC-MS revealed two known compounds i.e. 2-Methoxy-4-vinyl phenol (6.80%) and Benzofuran-2,3-dihydro (20...
July 27, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28748646/small-airway-dysfunction-in-chronic-hypersensitivity-pneumonitis
#9
Selene Guerrero Zúñiga, Julia Sánchez Hernández, Heidegger Mateos Toledo, Mayra Mejía Ávila, Laura Gochicoa-Rangel, José Luis Miguel Reyes, Moisés Selman, Luis Torre-Bouscoulet
BACKGROUND AND OBJECTIVE: Lung biopsies from patients with hypersensitivity pneumonitis (HP) have demonstrated small airway (SA) involvement, but there is no information concerning SA function in HP, and it is unknown whether pharmacological treatment could modify its function. SA function in patients with chronic HP using ultrasonic pneumography (UPG) and impulse oscillometry (IOS) was explored. We also compared initial results with those obtained after 4 weeks of standardized treatment with azathioprine and prednisone...
July 26, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28748613/a-rapid-method-for-the-determination-of-brominated-flame-retardant-concentrations-in-plastics-and-textiles-entering-the-waste-stream
#10
Mohamed Abou-Elwafa Abdallah, Daniel S Drage, Martin Sharkey, Harald Berresheim, Stuart Harrad
Due to new European legislation, products going to waste are subject to "low persistent organic pollutant concentration limits". Concentrations of restricted brominated flame retardants in waste products must be determined. A rapid extraction and clean-up method was developed for determination of brominated flame retardants in various plastics and textiles. The optimised method used vortexing and ultrasonication in dichloromethane followed by sulfuric acid clean-up to determine target compounds. Polybrominated diphenyl ethers were determined by gas chromatography with mass spectrometry and hexabromocyclododecane by liquid chromatography with tandem mass spectrometry...
July 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28748612/sol-gel-adsorbent-coated-extraction-needles-to-detect-volatile-compounds-in-spoiled-fish
#11
Ye-Jin Bang, Yura Hwang, Soyoung Lee, Soomi Park, Sunyoung Bae
Volatile compounds generated by fish spoilage were investigated by an inside-needle microextraction method followed by gas chromatography with flame ionization detection and gas chromatography with mass spectrometry. The inside of a needle was coated with an adsorbent to extract the target analytes from the headspace of the sample. The examined adsorbents included β-cyclodextrin, polystyrene resin cross-linked with 1% divinylbenzene, and polyethylene glycol mixed with polydimethylsiloxane. The investigated volatile compounds generated by fish spoilage were acetone, 2-butanone, 2-butanol, 2-propanol, dimethyl disulfide, acetic acid, and benzaldehyde...
July 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28748438/combined-fast-selective-reduction-using-mn-based-catalysts-and-nonthermal-plasma-for-nox-removal
#12
Jun Xiang Chen, Kuan Lun Pan, Sheng Jen Yu, Shaw Yi Yen, Moo Been Chang
In this study, the concept of fast SCR for NO reduction with NH3 as reducing agent is realized via the combination of nonthermal plasma (NTP) with Mn-based catalyst. Experimental results indicate that 10% wt. Mn-Ce-Ni/TiO2 possesses better physical and chemical properties of surface, resulting in higher NO removal efficiency if compared with 10% wt. Mn-Ce/TiO2 and 10% wt. Mn-Ce-Cu/TiO2. Mn-Ce-Ni/TiO2 of 10% wt. achieves 100% NOx conversion at 150 °C, while 10% wt. Mn-Ce/TiO2 and 10% wt. Mn-Ce-Cu/TiO2 need to be operated at a temperature above 200 °C for 100% NOx conversion...
July 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28748434/erratum-to-portuguese-agriculture-and-the-evolution-of-greenhouse-gas-emissions-can-vegetables-control-livestock-emissions
#13
Paulo Reis Mourao, Vítor Domingues Martinho
No abstract text is available yet for this article.
July 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28748430/inicu-integrated-neonatal-care-unit-capturing-neonatal-journey-in-an-intelligent-data-way
#14
Harpreet Singh, Gautam Yadav, Raghuram Mallaiah, Preetha Joshi, Vinay Joshi, Ravneet Kaur, Suneyna Bansal, Samir K Brahmachari
Neonatal period represents first 28 days of life, which is the most vulnerable time for a child's survival especially for the preterm babies. High neonatal mortality is a prominent and persistent problem across the globe. Non-availability of trained staff and infrastructure are the major recognized hurdles in the quality care of these neonates. Hourly progress growth charts and reports are still maintained manually by nurses along with continuous calculation of drug dosage and nutrition as per the changing weight of the baby...
August 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28748135/biocatalytic-and-bioelectrocatalytic-approaches-for-the-reduction-of-carbon-dioxide-using-enzymes
#15
REVIEW
Stefanie Schlager, Angela Dibenedetto, Michele Aresta, Dogukan H Apaydin, Liviu M Dumitru, Helmut Neugebauer, Niyazi S Sariciftci
In the recent decade, CO2 has increasingly been regarded not only as a greenhouse gas but even more as a chemical feedstock for carbon-based materials. Different strategies have evolved to realize CO2 utilization and conversion into fuels and chemicals. In particular, biological approaches have drawn attention, as natural CO2 conversion serves as a model for many processes. Microorganisms and enzymes have been studied extensively for redox reactions involving CO2. In this review, we focus on monitoring nonliving biocatalyzed reactions for the reduction of CO2 by using enzymes...
June 2017: Energy Technol (Weinh)
https://www.readbyqxmd.com/read/28747925/manipulating-planting-density-and-nitrogen-fertilizer-application-to-improve-yield-and-reduce-environmental-impact-in-chinese-maize-production
#16
Cailong Xu, Shoubing Huang, Beijing Tian, Jianhong Ren, Qingfeng Meng, Pu Wang
Relatively low nitrogen (N) efficiency and heavy environmental costs caused by excessive N fertilizer applications with outdated fertilization techniques are current cultivation production problems with maize among smallholders in North China Plain. Although many studies have examined agronomical strategies for improving yields and N use, the integrated effects of these measures and the associated environmental costs are not well understood. We conducted a 2-year field study with two densities (67,500 plants ha(-1), which was similar to local farmers' practices, and 90,000 plants ha(-1)) and three N rates (0, 180, and 360 kg ha(-1), the rate local farmers' commonly apply) to test the integrated effects for maize production at Wuqiao experimental station in North China Plain...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28747900/fungal-and-bacterial-diversity-isolated-from-aquilaria-malaccensis-tree-and-soil-induces-agarospirol-formation-within-3-months-after-artificial-infection
#17
Hemraj Chhipa, Nutan Kaushik
Aquilaria malaccensis Lam, commonly known as Agarwood, is a highly valuable species used in production of agar oil from its infected wood, which is utilized in pharmaceutical and perfumery industry. Agar oil formation in agarwood takes years through the natural process which is induced by natural or artificial injury or microbial infection. The role of soil fungi and bacteria in artificial induction is still an unexplored area. In the present study, we isolated the fungal and bacterial community residing inside the stem of A...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28747856/tunable-gas-sensing-gels-by-cooperative-assembly
#18
Abid Hussain, Ana T S Semeano, Susana I C J Palma, Ana S Pina, José Almeida, Bárbara F Medrado, Ana C C S Pádua, Ana L Carvalho, Madalena Dionísio, Rosamaria W C Li, Hugo Gamboa, Rein V Ulijn, Jonas Gruber, Ana C A Roque
The cooperative assembly of biopolymers and small molecules can yield functional materials with precisely tunable properties. Here, the fabrication, characterization, and use of multicomponent hybrid gels as selective gas sensors are reported. The gels are composed of liquid crystal droplets self-assembled in the presence of ionic liquids, which further coassemble with biopolymers to form stable matrices. Each individual component can be varied and acts cooperatively to tune gels' structure and function. The unique molecular environment in hybrid gels is explored for supramolecular recognition of volatile compounds...
July 19, 2017: Advanced Functional Materials
https://www.readbyqxmd.com/read/28747767/quality-assessment-of-chinese-liquor-with-different-ages-and-prediction-analysis-based-on-gas-chromatography-and-electronic-nose
#19
M L Xu, S M Zhu, Y Yu
The economic value of Chinese liquor is closely related with its age. Results from gas chromatograph (GC) analysis indicated that 8 dominant compounds were decreased with the increase of liquor age (0 to 5 years) while ethyl lactate was found to be the most stable dominant compound as no significant change was observed in it during the aging process. Liquor groups with different ages were well-discriminated by principal component analysis (PCA) based on electronic nose signals. High-accurate identification of liquor ages was realized using linear discriminant analysis (LDA) with the accuracy of 98...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747703/linking-the-morphological-and-metabolomic-response-of-lactuca-sativa-l-exposed-to-emerging-contaminants-using-gc%C3%A2-%C3%A3-%C3%A2-gc-ms-and-chemometric-tools
#20
Carlos Hurtado, Hadi Parastar, Víctor Matamoros, Benjamín Piña, Romà Tauler, Josep M Bayona
The occurrence of contaminants of emerging concern (CECs) in irrigation waters (up to low μg L(-1)) and irrigated crops (ng g(-1) in dry weight) has been reported, but the linkage between plant morphological changes and plant metabolomic response has not yet been addressed. In this study, a non-targeted metabolomic analysis was performed on lettuce (Lactuca sativa L) exposed to 11 CECs (pharmaceuticals, personal care products, anticorrosive agents and surfactants) by irrigation. The plants were watered with different CEC concentrations (0-50 µg L(-1)) for 34 days under controlled conditions and then harvested, extracted, derivatised and analysed by comprehensive two-dimensional gas chromatography coupled to a time-of-flight mass spectrometer (GC × GC-TOFMS)...
July 26, 2017: Scientific Reports
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