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https://www.readbyqxmd.com/read/28231147/applying-least-absolute-shrinkage-selection-operator-and-akaike-information-criterion-analysis-to-find-the-best-multiple-linear-regression-models-between-climate-indices-and-components-of-cow-s-milk
#1
Mohammad Reza Marami Milani, Andreas Hense, Elham Rahmani, Angelika Ploeger
This study focuses on multiple linear regression models relating six climate indices (temperature humidity THI, environmental stress ESI, equivalent temperature index ETI, heat load HLI, modified HLI (HLI new), and respiratory rate predictor RRP) with three main components of cow's milk (yield, fat, and protein) for cows in Iran. The least absolute shrinkage selection operator (LASSO) and the Akaike information criterion (AIC) techniques are applied to select the best model for milk predictands with the smallest number of climate predictors...
July 23, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231143/modified-atmosphere-systems-and-shelf-life-extension-of-fish-and-fishery-products
#2
REVIEW
Christina A Mireles DeWitt, Alexandra C M Oliveira
This review aims at summarizing the findings of studies published over the past 15 years on the application of modified atmosphere (MA) systems for shelf life extension of fish and fishery products. This review highlights the importance of CO₂ in the preservation of seafood products, and underscores the benefits of combining MA technology with product storage in the superchilled temperature range. It is generally accepted that MA technology cannot improve product quality and should not be utilized as a substitute for good sanitation and strict temperature control...
June 28, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231029/unintended-insulin-pump-delivery-in-hyperbaric-conditions
#3
Federico Bertuzzi, Basilio Pintaudi, Matteo Bonomo, Fabio Garuti
AIMS/HYPOTHESIS: Unintended pump insulin delivery was reported to occur as a consequence of decreased atmospheric pressure, probably mediated by air bubble formation and the expansion of existing bubbles. This observation has been used to explain some hypoglycemic episodes occurring in patients on insulin pump treatment in between 1 and 1 h 45 min after the flight takeoff. New models of insulin pumps have been introduced in the market, most of them are waterproof certified. It is not clear if in these new pumps the influence of atmospheric pressure changes on the insulin delivery is still present...
February 23, 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28230189/widespread-methane-seepage-along-the-continental-margin-off-svalbard-from-bj%C3%A3-rn%C3%A3-ya-to-kongsfjorden
#4
S Mau, M Römer, M E Torres, I Bussmann, T Pape, E Damm, P Geprägs, P Wintersteller, C-W Hsu, M Loher, G Bohrmann
Numerous articles have recently reported on gas seepage offshore Svalbard, because the gas emission from these Arctic sediments was thought to result from gas hydrate dissociation, possibly triggered by anthropogenic ocean warming. We report on findings of a much broader seepage area, extending from 74° to 79°, where more than a thousand gas discharge sites were imaged as acoustic flares. The gas discharge occurs in water depths at and shallower than the upper edge of the gas hydrate stability zone and generates a dissolved methane plume that is hundreds of kilometer in length...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230125/seven-temperate-terrestrial-planets-around-the-nearby-ultracool-dwarf-star-trappist-1
#5
Michaël Gillon, Amaury H M J Triaud, Brice-Olivier Demory, Emmanuël Jehin, Eric Agol, Katherine M Deck, Susan M Lederer, Julien de Wit, Artem Burdanov, James G Ingalls, Emeline Bolmont, Jeremy Leconte, Sean N Raymond, Franck Selsis, Martin Turbet, Khalid Barkaoui, Adam Burgasser, Matthew R Burleigh, Sean J Carey, Aleksander Chaushev, Chris M Copperwheat, Laetitia Delrez, Catarina S Fernandes, Daniel L Holdsworth, Enrico J Kotze, Valérie Van Grootel, Yaseen Almleaky, Zouhair Benkhaldoun, Pierre Magain, Didier Queloz
One aim of modern astronomy is to detect temperate, Earth-like exoplanets that are well suited for atmospheric characterization. Recently, three Earth-sized planets were detected that transit (that is, pass in front of) a star with a mass just eight per cent that of the Sun, located 12 parsecs away. The transiting configuration of these planets, combined with the Jupiter-like size of their host star-named TRAPPIST-1-makes possible in-depth studies of their atmospheric properties with present-day and future astronomical facilities...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/28230076/adaptive-free-space-optical-communications-through-turbulence-using-self-healing-bessel-beams
#6
Shuhui Li, Jian Wang
We present a scheme to realize obstruction- and turbulence-tolerant free-space orbital angular momentum (OAM) multiplexing link by using self-healing Bessel beams accompanied by adaptive compensation techniques. Compensation of multiple 16-ary quadrature amplitude modulation (16-QAM) data carrying Bessel beams through emulated atmospheric turbulence and obstructions is demonstrated. The obtained experimental results indicate that the compensation scheme can effectively reduce the inter-channel crosstalk, improve the bit-error rate (BER) performance, and recuperate the nondiffracting property of Bessel beams...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229537/high-temperature-stable-perovskite-solar-cell-based-on-low-cost-carbon-nanotube-hole-contact
#7
Kerttu Aitola, Konrad Domanski, Juan-Pablo Correa-Baena, Kári Sveinbjörnsson, Michael Saliba, Antonio Abate, Michael Grätzel, Esko Kauppinen, Erik M J Johansson, Wolfgang Tress, Anders Hagfeldt, Gerrit Boschloo
Mixed ion perovskite solar cells (PSC) are manufactured with a metal-free hole contact based on press-transferred single-walled carbon nanotube (SWCNT) film infiltrated with 2,2,7,-7-tetrakis(N,N-di-p-methoxyphenylamine)-9,90-spirobifluorene (Spiro-OMeTAD). By means of maximum power point tracking, their stabilities are compared with those of standard PSCs employing spin-coated Spiro-OMeTAD and a thermally evaporated Au back contact, under full 1 sun illumination, at 60 °C, and in a N2 atmosphere. During the 140 h experiment, the solar cells with the Au electrode experience a dramatic, irreversible efficiency loss, rendering them effectively nonoperational, whereas the SWCNT-contacted devices show only a small linear efficiency loss with an extrapolated lifetime of 580 h...
February 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28228353/isochoric-and-isobaric-freezing-of-fish-muscle
#8
Gabriel Năstase, Chenang Lyu, Gideon Ukpai, Alexandru Șerban, Boris Rubinsky
We have recently shown that, a living organism, which succumbs to freezing to -4 °C in an isobaric thermodynamic system (constant atmospheric pressure), can survive freezing to -4 °C in an isochoric thermodynamic system (constant volume). It is known that the mechanism of cell damage in an isobaric system is the freezing caused increase in extracellular osmolality, and, the consequent cell dehydration. An explanation for the observed survival during isochoric freezing is the thermodynamic modeling supported hypothesis that, in the isochoric frozen solution the extracellular osmolality is comparable to the cell intracellular osmolality...
February 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28228207/complications-and-mortality-associated-with-temporary-abdominal-closure-techniques-a-systematic-review-and-meta-analysis
#9
Adam Cristaudo, Scott Jennings, Ronny Gunnarsson, Alan DeCosta
Temporary abdominal closure (TAC) techniques are routinely used in the open abdomen. Ideally, they should prevent evisceration, aid in removal of unwanted fluid from the peritoneal cavity, facilitate in achieving safe definitive fascial closure, as well as prevent the development of intra-abdominal complications. TAC techniques used in the open abdomen were compared with negative pressure wound therapy (NPWT) to identify which was superior. A systematic review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines involving Medline, Excerpta Medica, Cochrane Central Register of Controlled Trials, Cumulative Index to Nursing and Allied Health Literature, and <ext-link ext-link-type="uri" xlink:href="http://Clinicaltrials...
February 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28228170/a-second-amorphous-layer-underneath-surface-oxide
#10
Bin Zhang, Kunlin Peng, Xuechao Sha, Ang Li, Xiaoyuan Zhou, Yanhui Chen, QingSong Deng, Dingfeng Yang, Evan Ma, Xiaodong Han
Formation of a nanometer-scale oxide surface layer is common when a material is exposed to oxygen-containing environment. Employing aberration-corrected analytical transmission electron microscopy and using single crystal SnSe as an example, we show that for an alloy, a second thin amorphous layer can appear underneath the outmost oxide layer. This inner amorphous layer is not oxide based, but instead originates from solid-state amorphization of the base alloy when its free energy rises to above that of the metastable amorphous state; which is a result of the composition shift due to the preferential depletion of the oxidizing species, in our case, the outgoing Sn reacting with the oxygen atmosphere...
February 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28227441/novel-ti-nb-alloys-with-improved-wear-resistance-for-biomedical-implant-application
#11
Praveen Chapala, Swati Ghosh Acharyya, S M Shariff, Ganesh Naik, Praveen Chapala, Swati Ghosh Acharyya, S M Shariff, Ganesh Naik, Ganesh Naik, S M Shariff, Praveen Chapala, Swati Ghosh Acharyya
The present study involved fabrication of titanium niobium based alloys having elastic modulus close to that of human bone and subsequently determining the wear resistance of these alloys for biomedical application. In the present study three beta stabilized titanium niobium alloys having composition Ti-24Nb-4Zr-8Sn, Ti-35Nb-4Sn and Ti-29Nb-13Ta-7Zr were made by vacuum arc melting. The alloys were then aged at 1000 C for 6 hours in an argon atmosphere. Detailed microstructural characterization and phase identification was carried out using scanning electron microscopy and x-ray diffraction respectively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226554/effects-of-a-non-thermal-plasma-needle-device-on-hpv-16-positive-cervical-cancer-cell-viability-in-vitro
#12
Hollie A Ryan, Johanna Neuber, Shutong Song, Stephen J Beebe, Chunqi Jiang, Hollie A Ryan, Johanna Neuber, Shutong Song, Stephen J Beebe, Chunqi Jiang, Shutong Song, Johanna Neuber, Chunqi Jiang, Stephen J Beebe, Hollie A Ryan
Non-thermal atmospheric pressure plasma has been demonstrated to inactivate a wide range of surface-dwelling pathogenic microorganisms including airborne viral particles, vegetative bacteria and bacterial spores. This shows the promise of plasma-based decontamination procedures for broad-spectrum sterilization and disinfection and promotes the in-depth and systematic study of how plasma treatment conditions relate to pathogen inactivation efficiency. A wide knowledge gap nonetheless exists regarding whether certain plasma parameters and exposure conditions can alter the resistance of virus-linked cancer cells to treatment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225911/clean-air-matters-an-overview-of-traffic-related-air-pollution-and-pregnancy
#13
Anne Dorothée Slovic, Carmen Simone Diniz, Helena Ribeiro
The right to a healthy pregnancy and to giving birth in a safe environment is source of comprehensive research. Decent birth facilities, respect, and no discrimination are already recognized as fundamental rights, but an accurate look at the outdoor environment is required. Air pollution is a dangerous factor to pregnant women and newborns, many of whom highly exposed to traffic-related atmospheric pollutants in urban areas. Such exposure can lead to low birth weight and long-lasting effects, such as respiratory diseases and premature death...
February 16, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28225279/cubr-catalyzed-aerobic-decarboxylative-cycloaddition-for-the-synthesis-of-indolizines-under-solvent-free-conditions
#14
Wenhui Wang, Junwen Han, Jinwei Sun, Yun Liu
An efficient synthesis of diversified indolizine derivatives were developed via CuBr-catalyzed reaction of pyridines, methyl ketones and alkenoic acids under solvent-free conditions in oxygen atmosphere. This synthesis involves cascade processes of copper-catalyzed bromination of the methyl ketone, 1,3-dipolar cycloaddition of the pyridinium ylide with the alkenoic acid followed by oxidative decarboxylation and dehydrogenative aromatization of the primary cycloadduct. By this protocol, a wide range of indoliznes with different substitution patterns were selectively prepared in one pot from simple substrates in good to excellent yields...
February 22, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28225083/antitumorigenic-effect-of-atmospheric-pressure-dielectric-barrier-discharge-on-human-colorectal-cancer-cells-via-regulation-of-sp1-transcription-factor
#15
Duksun Han, Jin Hyoung Cho, Ra Ham Lee, Woong Bang, Kyungho Park, Minseok S Kim, Jung-Hyun Shim, Jung-Il Chae, Se Youn Moon
Human colorectal cancer cell lines (HT29 and HCT116) were exposed to dielectric barrier discharge (DBD) plasma at atmospheric pressure to investigate the anticancer capacity of the plasma. The dose- and time-dependent effects of DBDP on cell viability, regulation of transcription factor Sp1, cell-cycle analysis, and colony formation were investigated by means of MTS assay, DAPI staining, propidium iodide staining, annexin V-FITC staining, Western blot analysis, RT-PCR analysis, fluorescence microscopy, and anchorage-independent cell transformation assay...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224985/episodic-release-of-co2-from-the-high-latitude-north-atlantic-ocean-during-the-last-135%C3%A2-kyr
#16
Mohamed M Ezat, Tine L Rasmussen, Bärbel Hönisch, Jeroen Groeneveld, Peter deMenocal
Antarctic ice cores document glacial-interglacial and millennial-scale variability in atmospheric pCO2 over the past 800 kyr. The ocean, as the largest active carbon reservoir on this timescale, is thought to have played a dominant role in these pCO2 fluctuations, but it remains unclear how and where in the ocean CO2 was stored during glaciations and released during (de)glacial millennial-scale climate events. The evolution of surface ocean pCO2 in key locations can therefore provide important clues for understanding the ocean's role in Pleistocene carbon cycling...
February 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28224792/patterned-polymer-coatings-increase-the-efficiency-of-dew-harvesting
#17
Omar Al-Khayat, Jun Ki Hong, David M Beck, Andrew I Minett, Chiara Neto
Micro-patterned polymer surfaces, possessing both topographical and chemical characteristics, were used to capture atmospheric water. The micro-patterns mimic the structure on the back of a desert beetle that condenses water from air in a very dry environment. The patterned coatings were prepared by the dewetting of thin films of poly-4-vinylpyridine (P4VP) on top of polystyrene films (PS) films, upon solvent annealing, and consist of raised hydrophilic bumps on a hydrophobic background. The size and density distribution of the hydrophilic bumps could be tuned widely by tuning the initial thickness of the P4VP films: the diameter of the produced bumps and their height could be varied by almost two order of magnitude (1 µm - 80 µm, and 40 nm - 9000 nm, respectively), and their distribution density could be varied by 5 orders of magnitude...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28224785/iron-nanoclusters-as-template-activator-for-the-synthesis-of-nitrogen-doped-porous-carbon-and-its-co2-adsorption-application
#18
Ning Fu, Huanming Wei, Hualin Lin, Le Li, Cuihong Ji, Ningbo Yu, Haijun Chen, Sheng Han, Guyu Xiao
We propose a facile synthesis approach for nitrogen doped porous carbon and demonstrate a novel pore-forming method that iron nanoclusters act as a template or activator at the different carbonization temperature based on Fe3+-poly (4-vinyipyridine) (P4VP) coordination. P4VP will completely decompose even in an inert atmosphere, but under the coordination and catalysis of Fe3+, it can be converted to carbon at very low temperature (400 °C). The aggregation of iron nanoclusters in the carbonization process showed different pore-forming methods at different temperatures...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28224435/factors-associated-with-trait-anger-level-of-juvenile-offenders-in-hubei-province-a-binary-logistic-regression-analysis
#19
Li-Na Tang, Xiao-Zhou Ye, Qiu-Ge Yan, Hong-Juan Chang, Yu-Qiao Ma, De-Bin Liu, Zhi-Gen Li, Yi-Zhen Yu
The risk factors of high trait anger of juvenile offenders were explored through questionnaire study in a youth correctional facility of Hubei province, China. A total of 1090 juvenile offenders in Hubei province were investigated by self-compiled social-demographic questionnaire, Childhood Trauma Questionnaire (CTQ), and State-Trait Anger Expression Inventory-II (STAXI-II). The risk factors were analyzed by chi-square tests, correlation analysis, and binary logistic regression analysis with SPSS 19.0. A total of 1082 copies of valid questionnaires were collected...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28224394/native-like-and-denatured-cytochrome-c-ions-yield-cation-to-anion-proton-transfer-reaction-products-with-similar-collision-cross-sections
#20
Kenneth J Laszlo, John H Buckner, Eleanor B Munger, Matthew F Bush
The relationship between structures of protein ions, their charge states, and their original structures prior to ionization remains challenging to decouple. Here, we use cation-to-anion proton transfer reactions (CAPTR) to reduce the charge states of cytochrome c ions in the gas phase, and ion mobility to probe their structures. Ions were formed using a new temperature-controlled nanoelectrospray ionization source at 25 °C. Characterization of this source demonstrates that the temperature of the liquid sample is decoupled from that of the atmospheric pressure interface, which is heated during CAPTR experiments...
February 21, 2017: Journal of the American Society for Mass Spectrometry
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