keyword
MENU ▼
Read by QxMD icon Read
search

Active cooling

keyword
https://www.readbyqxmd.com/read/28814722/evidence-of-a-reduction-in-cloud-condensation-nuclei-activity-of-water-soluble-aerosols-caused-by-biogenic-emissions-in-a-cool-temperate-forest
#1
Astrid Müller, Yuzo Miyazaki, Eri Tachibana, Kimitaka Kawamura, Tsutom Hiura
Biogenic organic aerosols can affect cloud condensation nuclei (CCN) properties, and subsequently impact climate change. Large uncertainties exist in how the difference in the types of terrestrial biogenic sources and the abundance of organics relative to sulfate affect CCN properties. For the submicron water-soluble aerosols collected for two years in a cool-temperate forest in northern Japan, we show that the hygroscopicity parameter κCCN (0.44 ± 0.07) exhibited a distinct seasonal trend with a minimum in autumn (κCCN = 0...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814344/microbial-phylogeny-determines-transcriptional-response-of-resistome-to-dynamic-composting-processes
#2
Cheng Wang, Da Dong, P J Strong, Weijing Zhu, Zhuang Ma, Yong Qin, Weixiang Wu
BACKGROUND: Animal manure is a reservoir of antibiotic resistance genes (ARGs) that pose a potential health risk globally, especially for resistance to the antibiotics commonly used in livestock production (such as tetracycline, sulfonamide, and fluoroquinolone). Currently, the effects of biological treatment (composting) on the transcriptional response of manure ARGs and their microbial hosts are not well characterized. Composting is a dynamic process that consists of four distinct phases that are distinguished by the temperature resulting from microbial activity, namely the mesophilic, thermophilic, cooling, and maturing phases...
August 16, 2017: Microbiome
https://www.readbyqxmd.com/read/28813416/large-turbulent-reservoirs-of-cold-molecular-gas-around-high-redshift-starburst-galaxies
#3
E Falgarone, M A Zwaan, B Godard, E Bergin, R J Ivison, P M Andreani, F Bournaud, R S Bussmann, D Elbaz, A Omont, I Oteo, F Walter
Starburst galaxies at the peak of cosmic star formation are among the most extreme star-forming engines in the Universe, producing stars over about 100 million years (ref. 2). The star-formation rates of these galaxies, which exceed 100 solar masses per year, require large reservoirs of cold molecular gas to be delivered to their cores, despite strong feedback from stars or active galactic nuclei. Consequently, starburst galaxies are ideal for studying the interplay between this feedback and the growth of a galaxy...
August 14, 2017: Nature
https://www.readbyqxmd.com/read/28800824/assessing-the-antimicrobial-potential-of-aerosolised-electrochemically-activated-solutions-ecas-for-reducing-the-microbial-bio-burden-on-fresh-food-produce-held-under-cooled-or-cold-storage-conditions
#4
R M S Thorn, J Pendred, D M Reynolds
The main aim of this study was to assess the antimicrobial efficacy of electrochemically activated fog (ECAF) for reducing the microbial bio-burden on artificially inoculated fresh produce held under cooled (cucumber and vine tomatoes) or cold (rocket and broccoli) storage conditions. The ECAF treatment (1100 ± 5 mV ORP; 50 ± 5 mg L(-1) free chlorine; 2.7 ± 0.1 pH) resulted in a significant log reduction in the potential pathogen E. coli recovered from rocket (2.644 Log10 CFU g(-1)), broccoli (4...
December 2017: Food Microbiology
https://www.readbyqxmd.com/read/28800288/population-based-study-of-the-national-implementation-of-therapeutic-hypothermia-in-infants-with-hypoxic-ischemic-encephalopathy
#5
Juan Arnaez, Alfredo García-Alix, Gemma Arca, Sonia Caserío, Eva Valverde, M Teresa Moral, Isabel Benavente-Fernández, Simón Lubián-López
Data on the incidence of hypoxic-ischemic encephalopathy (HIE) in the first 6 hours of life together with the implementation of therapeutic hypothermia (TH) are relevant to delineate actions to achieve the lowest rates of neonatal mortality, morbidity, and long-term impact on health associated with HIE. This is population-based national survey study, including newborns ≥35 weeks of gestation with moderate-to-severe HIE from all level III neonatal care units, to provide the incidence of HIE for the period 2012-2013, and the implementation of TH up to June 2015 in Spain...
August 11, 2017: Therapeutic Hypothermia and Temperature Management
https://www.readbyqxmd.com/read/28800123/differential-proteomic-analysis-reveals-the-effect-of-calcium-on-malus-baccata-borkh-leaves-under-temperature-stress
#6
Lijie Li, Hong Su, Huaiyu Ma, Deguo Lyu
In the cool apple-producing areas of northern China, air temperature during early spring changes in a rapid and dramatic manner, which affects the growth and development of apple trees at the early stage of the growing season. Previous studies have shown that the treatment of calcium can increase the cold tolerance of Malus baccata Borkh., a widely-used rootstock apple tree in northern China. To better understand the physiological function of calcium in the response of M. baccata to temperature stress, we analyzed the effect of calcium treatment (2% CaCl₂) on M...
August 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28791042/pif4-promotes-expression-of-lng1-and-lng2-to-induce-thermomorphogenic-growth-in-arabidopsis
#7
Geonhee Hwang, Jia-Ying Zhu, Young K Lee, Sara Kim, Thom T Nguyen, Jungmook Kim, Eunkyoo Oh
Arabidopsis plants adapt to high ambient temperature by a suite of morphological changes including elongation of hypocotyls and petioles and leaf hyponastic growth. These morphological changes are collectively called thermomorphogenesis and are believed to increase leaf cooling capacity by enhancing transpiration efficiency, thereby increasing tolerance to heat stress. The bHLH transcription factor PHYTOCHROME INTERACTING FACTOR4 (PIF4) has been identified as a major regulator of thermomorphogenic growth. Here, we show that PIF4 promotes the expression of two homologous genes LONGIFOLIA1 (LNG1) and LONGIFOLIA2 (LNG2) that have been reported to regulate leaf morphology...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28790443/endocannabinoid-tone-is-higher-in-healthy-lean-south-asian-than-white-caucasian-men
#8
Vasudev Kantae, Kimberly J Nahon, Maaike E Straat, Leontine E H Bakker, Amy C Harms, Mario van der Stelt, Thomas Hankemeier, Ingrid M Jazet, Mariëtte R Boon, Patrick C N Rensen
South Asians have a higher risk to develop obesity and related disorders compared to white Caucasians. This is likely in part due to their lower resting energy expenditure (REE) as related with less energy-combusting brown adipose tissue (BAT). Since overactivation of the endocannabinoid system is associated with obesity and low BAT activity, we hypothesized that South Asians have a higher endocannabinoid tone. Healthy lean white Caucasian (n = 10) and South Asian (n = 10) men were cold-exposed to activate BAT...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28783911/wind-induced-changes-in-the-dynamics-of-fluorescent-organic-matter-in-the-coastal-nw-mediterranean
#9
Fran L Aparicio, Mar Nieto-Cid, Eva Calvo, Carles Pelejero, Àngel López-Sanz, Josep Pascual, Jordi Salat, Elvia D Sánchez-Pérez, Patricia De La Fuente, Josep M Gasol, Cèlia Marrasé
Marine biogeochemistry dynamics in coastal marine areas is strongly influenced by episodic events such as rain, intense winds, river discharges and anthropogenic activities. We evaluated in this study the importance of these forcing events on modulating seasonal changes in the marine biogeochemistry of the northwestern coast of the Mediterranean Sea, based on data gathered from a fixed coastal sampling station in the area. A 4-year (2011-2014) monthly sampling at four depths (0.5m, 20m, 50m and 80m) was performed to examine the time variability of several oceanographic variables: seawater temperature, salinity, inorganic nutrient concentrations (NO3(-), PO4(3-) and SiO2), chlorophyll a (Chl a), dissolved organic carbon (DOC) and fluorescent dissolved organic matter (FDOM)...
August 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28780852/dual-beam-depth-profiling-and-imaging-with-argon-and-bismuth-clusters-of-prenylated-stilbenes-on-glandular-trichomes-of-macaranga-vedeliana
#10
Tiphaine Péresse, Nicolas Elie, David Touboul, Van Cuong Pham, Vincent Dumontet, Fanny Roussi, Marc Litaudon, Alain Brunelle
Using a time-of-flight secondary ion mass spectrometer equipped with an argon cluster ion for sputtering and a bismuth liquid metal ion source for analysis, both surfaces of leaves and fruits of Macaranga vedeliana, an endemic New Caledonian species have been for the first time analyzed by a dual beam depth profiling. To prevent in-vacuum evaporation of the liquid content of the small glandular trichomes covering fruits and leaves surfaces, and also to be able to analyze their liquid content while preventing any sublimation of the latter, the samples were kept frozen during the whole experiment using a nitrogen cooled sample holder...
August 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28776042/characterization-of-legionella-species-from-watersheds-in-british-columbia-canada
#11
Michael A Peabody, Jason A Caravas, Shatavia S Morrison, Jeffrey W Mercante, Natalie A Prystajecky, Brian H Raphael, Fiona S L Brinkman
Legionella spp. present in some human-made water systems can cause Legionnaires' disease in susceptible individuals. Although legionellae have been isolated from the natural environment, variations in the organism's abundance over time and its relationship to aquatic microbiota are poorly understood. Here, we investigated the presence and diversity of legionellae through 16S rRNA gene amplicon and metagenomic sequencing of DNA from isolates collected from seven sites in three watersheds with varied land uses over a period of 1 year...
July 2017: MSphere
https://www.readbyqxmd.com/read/28772866/tuning-the-mechanical-and-antimicrobial-performance-of-a-cu-based-metallic-glass-composite-through-cooling-rate-control-and-annealing
#12
Victor M Villapún, F Esat, S Bull, L G Dover, S González
The influence of cooling rate on the wear and antimicrobial performance of a Cu52Z41Al₇ (at. %) bulk metallic glass (BMG) composite was studied and the results compared to those of the annealed sample (850 °C for 48 h) and to pure copper. The aim of this basic research is to explore the potential use of the material in preventing the spread of infections. The cooling rate is controlled by changing the mould diameter (2 mm and 3 mm) upon suction casting and controlling the mould temperature (chiller on and off)...
May 6, 2017: Materials
https://www.readbyqxmd.com/read/28771364/universal-in-situ-transformation-of-bulky-compounds-into-nanoscale-catalysts-by-high-temperature-pulse
#13
Shaomao Xu, Yanan Chen, Yiju Li, Aijiang Lu, Yonggang Yao, Jiaqi Dai, Yanbin Wang, Boyang Liu, Steven D Lacey, Glenn R Pastel, Yudi Kuang, Valencia A Danner, Feng Jiang, Kun Kelvin Fu, Liangbing Hu
The synthesis of nanoscale metal compound catalysts has attracted much research attention in the past decade. The challenges of preparation of the metal compound include the complexity of the synthesis process and difficulty of precise control of the reaction conditions. Herein, we report an in situ synthesis of nanoparticles via a high-temperature pulse method where the bulk material acts as the precursor. During the process of rapid heating and cooling, swift melting, anchoring, and recrystallization occur, resulting in the generation of high-purity nanoparticles...
August 8, 2017: Nano Letters
https://www.readbyqxmd.com/read/28770503/seasonal-variations-of-natural-radionuclides-minor-and-trace-elements-in-lake-sediments-and-water-in-a-lignite-mining-area-of-north-western-greece
#14
Fotini Noli, Panagiotis Tsamos
The radiological and chemical pollution of a cluster of four lakes in a lignite mining area of North-Western Greece was investigated using a variety of analytical techniques. Alpha spectrometry was applied to measure the activity concentrations of the uranium radioisotopes (U-234, U-235, and U-238) in waters. The mass activities of U-238, Th-232, and K-40 in sediments were measured by high-resolution gamma spectrometry. Furthermore, the determination of the minor and trace elements was carried out by instrumental neutron activation analysis (INAA) in both water and sediments samples, respectively...
August 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28767579/the-identification-of-the-trpm8-channel-on-primary-culture-of-human-nasal-epithelial-cells-and-its-response-to-cooling
#15
Shao-Cheng Liu, Hsuan-Hsuan Lu, Hueng-Chuen Fan, Hsing-Won Wang, Hang-Kang Chen, Fei-Peng Lee, Chong-Jen Yu, Yueng-Hsiang Chu
BACKGROUND: It has been proposed that the transient receptor potential (TRP) channel Melastatin 8 (TRPM8) is a cold-sensing TRP channel. However, its presence and its role in the nasal cavity have not yet been fully studied. METHODS: Immunohistology was used to study TRPM8 receptors in both the nasal mucosa tissue and the primary cultures of human nasal cells. Cells from primary cultures were immunostained with antibodies to TRPM8, mucin, cytokeratin (CK)-14, CK-18, and vimentin...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28764128/using-temperature-responsive-zwitterionic-surfactant-to-enhance-the-enzymatic-hydrolysis-of-lignocelluloses-and-recover-cellulase-by-cooling
#16
Cheng Cai, Yuxia Pang, Xuejuan Zhan, Meijun Zeng, Hongming Lou, Yong Qian, Dongjie Yang, Xueqing Qiu
Some zwitterionic surfactants exhibit upper critical solution temperature (UCST) in aqueous solutions. For the zwitterionic surfactant solution mixed with cellulase, when its temperature is below UCST, the cellulase can be recovered by coprecipitation with zwitterionic surfactant. In this work, 3-(Hexadecyldimethylammonio) propanesulfonate (SB3-16) was selected to enhance the enzymatic hydrolysis of lignocelluloses and recover the cellulase. After adding 2mmol/L of SB3-16, the enzymatic digestibility of eucalyptus pretreated by dilute acid (Eu-DA) and by sulfite (Eu-SPORL) increased from 27...
July 13, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28755972/anoectochilus-roxburghii-a-review-of-its-phytochemistry-pharmacology-and-clinical-applications
#17
REVIEW
Shenyi Ye, Qingsong Shao, Ailian Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Anoectochilus roxburghii (Orchidaceae), also known as Jinxianlian (Simplified Chinese: ) and Jinxianlan (Simplified Chinese: ), is valued in many Asian countries, where this plant species is used for medicinal, culinary, and ornamental purposes. As a food, A. roxburghii is widely used as a treatment booster and medicine because of its various beneficial properties; these include, most notably, the curative effects of heat dissipation and cooling of blood, elimination of dampness, detoxification, and immunity enhancement...
July 26, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28755260/visible-multiphoton-dissociation-of-chromophore-tagged-peptides
#18
Mathilde Bouakil, Alexander Kulesza, Steven Daly, Luke MacAleese, Rodolphe Antoine, Philippe Dugourd
The visible photodissociation mechanisms of QSY7-tagged peptides of increasing size have been investigated by coupling a mass spectrometer and an optical parametric oscillator laser beam. The experiments herein consist of energy resolved collision- and laser-induced dissociation measurements on the chromophore-tagged peptides. The results show that fragmentation occurs by similar channels in both activation methods, but that the branching ratios are vastly different. Observation of a size-dependent minimum laser pulse energy required to induce fragmentation, and collisional cooling rates in time resolved experiments show that laser-induced dissociation occurs through the absorption of multiple photons by the chromophore and the subsequent heating through vibrational energy redistribution...
July 28, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28753208/ice-nucleation-active-bacteria-in-precipitation-are-genetically-diverse-and-nucleate-ice-by-employing-different-mechanisms
#19
K C Failor, D G Schmale, B A Vinatzer, C L Monteil
A growing body of circumstantial evidence suggests that ice nucleation active (Ice(+)) bacteria contribute to the initiation of precipitation by heterologous freezing of super-cooled water in clouds. However, little is known about the concentration of Ice(+) bacteria in precipitation, their genetic and phenotypic diversity, and their relationship to air mass trajectories and precipitation chemistry. In this study, 23 precipitation events were collected over 15 months in Virginia, USA. Air mass trajectories and water chemistry were determined and 33 134 isolates were screened for ice nucleation activity (INA) at -8 °C...
July 28, 2017: ISME Journal
https://www.readbyqxmd.com/read/28752703/-synthesis-characterization-and-antitumor-activity-of-5-fluorouracil-nicotinamide-cocrystal
#20
W U Min, Liu Xingang, Xue Yu, Chen Qi, H U Xiurong, Zhou Jun, Tang Guping
Objective: To synthesize 5-fluorouracil-nicotinamide (5-FU-NCT) cocrystal and to investigate its physicochemical and biological properties. Methods: The cocrystal of 5-Fu-NCT was prepared through the cooling technology. PXRD, NMR, FTIR and DSC were used to characterize the structure of 5-FU-NCT cocrystal. Solubility was measured by HPLC method. Drug resistant human liver cancer BEL-7402/5-FU cells were treated with 5-FU-NCT cocrystal, the inhibition effect was tested by MTT and HE staining, and cancer cell migration was determined by scratch test...
March 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
keyword
keyword
49839
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"