keyword
MENU ▼
Read by QxMD icon Read
search

high flux

keyword
https://www.readbyqxmd.com/read/28938200/atmospheric-deposition-of-mercury-and-cadmium-impacts-on-topsoil-in-a-typical-coal-mine-city-lianyuan-china
#1
Jie Liang, Chunting Feng, Guangming Zeng, Minzhou Zhong, Xiang Gao, Xiaodong Li, Xinyue He, Xin Li, Yilong Fang, Dan Mo
Mercury (Hg) and cadmium (Cd) in the atmosphere from coal combustion emissions play an important role in soil pollution. Therefore, the purposes of this study were to quantitatively evaluate the atmospheric Hg and Cd deposition and to determine the influence of atmospheric deposition on Hg and Cd contents in surface soil in a typical coal mine city. Atmospheric deposition samples were collected from May 2015 to May 2016 at 17 sites located in industrial, agricultural and forest areas in the Lianyuan city. Atmospheric Hg and Cd deposition fluxes in the different land use types showed high variability...
September 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28935969/simultaneous-entanglement-swapping-of-multiple-orbital-angular-momentum-states-of-light
#2
Yingwen Zhang, Megan Agnew, Thomas Roger, Filippus S Roux, Thomas Konrad, Daniele Faccio, Jonathan Leach, Andrew Forbes
High-bit-rate long-distance quantum communication is a proposed technology for future communication networks and relies on high-dimensional quantum entanglement as a core resource. While it is known that spatial modes of light provide an avenue for high-dimensional entanglement, the ability to transport such quantum states robustly over long distances remains challenging. To overcome this, entanglement swapping may be used to generate remote quantum correlations between particles that have not interacted; this is the core ingredient of a quantum repeater, akin to repeaters in optical fibre networks...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935899/decadal-radon-cycles-in-a-hot-spring
#3
Rui Yan, Heiko Woith, Rongjiang Wang, Guangcai Wang
A high-fidelity record covering nearly 40 years of water-dissolved radon from the hot spring site of BangLazhang (BLZ), Southwestern China is presented to study multi-year periodicities of radon. Ancillary observational data, i.e., water temperature, spring discharge rate, barometric pressure, combined with regional rainfall, galactic cosmic rays (GCR flux is modulated by solar wind and thus a proxy for solar activity) and regional seismicity from the same period are considered to identify potentially influencing factors controlling the changes in radon...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935590/evaluation-of-transdermal-drug-permeation-as-modulated-by-lipoderm-and-pluronic-lecithin-organogel
#4
Qian Zhang, Yunmei Song, Stephen W Page, Sanjay Garg
The transdermal delivery of two fluorescent probes with similar molecular weight but different lipophilicity, into and through the skin from two commercially available transdermal bases, pluronic lecithin organogel (PLO) and Lipoderm(®) has been evaluated. First, in vitro penetration of fluorescein sodium and fluorescein (free acid) through porcine skin were evaluated. Retention and depth distribution profiles in skin were obtained by tape-stripping and then followed by optical sectioning using multiphoton microscopy...
September 18, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28934858/metabolism-nutrition-and-redox-signaling-of-hydroxyproline
#5
Zhenlong Wu, Yongqing Hou, Zhaolai Dai, Chien-An Hu, Guoyao Wu
SIGNIFICANCE: Hydroxyproline is a structurally and physiologically important imino acid in animals. It is provided from diets and endogenous synthesis, and its conversion into glycine is enhances the production of glutathione, DNA, heme, and protein. Furthermore, oxidation of hydroxyproline by hydroxyproline oxidase plays an important role in cell antioxidative reactions, survival, and homeostasis. Understanding the mechanisms whereby hydroxyproline participates in metabolism and cell signaling can improve the nutrition and health of animals and humans...
September 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28934418/systems-biotechnology-for-protein-production-in-pichia-pastoris
#6
Richard J Zahrl, David A Peña, Diethard Mattanovich, Brigitte Gasser
The methylotrophic yeast Pichia pastoris (syn. Komagataella spp.) is one of the most important production systems for heterologous proteins. After the first genome sequences were published in 2009, tremendous effort was made to establish systems-level analytical methods. Methylotrophic lifestyle was one of the most thoroughly investigated topics, studied at the levels of transcriptome, proteome and metabolic flux. Also the responses of P. pastoris to environmental stress conditions experienced during high cell density production processes were studied...
November 1, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28930756/dynamics-of-glucose-metabolism-after-kidney-transplantation
#7
Martina Guthoff, Robert Wagner, Karoline Weichbrodt, Silvio Nadalin, Alfred Königsrainer, Hans-Ulrich Häring, Andreas Fritsche, Nils Heyne
BACKGROUND/AIMS: Posttransplantation diabetes mellitus (PTDM) impacts patient and allograft survival after kidney transplantation. Prediabetes, which is an independent risk factor for PTDM, is modifiable also in a post-transplant setting. Understanding the risks and dynamics of impaired glucose metabolism after transplantation is a key component for targeted intervention. METHODS: A retrospective chart analysis of all adult non-diabetic renal allograft recipients (n=251, 2007-2014) was performed...
September 20, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28928238/talk-1-channels-control-%C3%AE-cell-endoplasmic-reticulum-ca-2-homeostasis
#8
Nicholas C Vierra, Prasanna K Dadi, Sarah C Milian, Matthew T Dickerson, Kelli L Jordan, Patrick Gilon, David A Jacobson
Ca(2+) handling by the endoplasmic reticulum (ER) serves critical roles in controlling pancreatic β cell function and becomes perturbed during the pathogenesis of diabetes. ER Ca(2+) homeostasis is determined by ion movements across the ER membrane, including K(+) flux through K(+) channels. We demonstrated that K(+) flux through ER-localized TALK-1 channels facilitated Ca(2+) release from the ER in mouse and human β cells. We found that β cells from mice lacking TALK-1 exhibited reduced basal cytosolic Ca(2+) and increased ER Ca(2+) concentrations, suggesting reduced ER Ca(2+) leak...
September 19, 2017: Science Signaling
https://www.readbyqxmd.com/read/28926811/towards-better-monitoring-of-technology-critical-elements-in-europe-coupling-of-natural-and-anthropogenic-cycles
#9
Philip Nuss, Gian Andrea Blengini
The characterization of elemental cycles has a rich history in biogeochemistry. Well known examples include the global carbon cycle, or the cycles of the 'grand nutrients' nitrogen, phosphorus, and sulfur. More recently, efforts have increased to better understand the natural cycling of technology critical elements (TCEs), i.e. elements with a high supply risk and economic importance in the EU. On the other hand, tools such as material-flow analysis (MFA) can help to understand how substances and goods are transported and accumulated in man-made technological systems ('anthroposphere')...
September 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28926792/u-isotopes-distribution-in-the-lower-rhone-river-and-its-implication-on-radionuclides-disequilibrium-within-the-decay-series
#10
REVIEW
Mathilde Zebracki, Xavier Cagnat, Stéphanie Gairoard, Nicolas Cariou, Frédérique Eyrolle-Boyer, Béatrice Boulet, Christelle Antonelli
The large rivers are main pathways for the delivery of suspended sediments into coastal environments, affecting the biogeochemical fluxes and the ecosystem functioning. The radionuclides from (238)U and (232)Th-series can be used to understand the dynamic processes affecting both catchment soil erosion and sediment delivery to oceans. Based on annual water discharge the Rhone River represents the largest river of the Mediterranean Sea. The Rhone valley also represents the largest concentration in nuclear power plants in Europe...
September 16, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28926270/an-ultra-thin-nanoporous-membrane-evaporator
#11
Zhengmao Lu, Kyle L Wilke, Daniel John Preston, Ikuya Kinefuchi, Elizabeth F Chang-Davidson, Evelyn N Wang
Evaporation is a ubiquitous phenomenon found in nature and widely used in industry. Yet fundamental understanding of interfacial transport during evaporation remains limited to date owing to the difficulty of characterizing the heat and mass transfer at the interface, especially at high heat fluxes ( > 100 W/cm(2)). In this work, we elucidated evaporation into an air ambient with an ultra-thin (≈ 200 nm thick) nanoporous (≈ 130 nm pore diameter) membrane. With our evaporator design, we accurately monitored the temperature of the liquid-vapor interface, reduced the thermal-fluidic transport resistance and mitigated the clogging risk associated with contamination...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28926104/glucose-stimulates-intestinal-epithelial-crypt-proliferation-by-modulating-cellular-energy-metabolism
#12
Weinan Zhou, Deepti Ramachandran, Abdelhak Mansouri, Megan J Dailey
The intestinal epithelium plays an essential role in nutrient absorption, hormone release and barrier function. Maintenance of the epithelium is driven by continuous cell renewal by stem cells located in the intestinal crypts. The amount and type of diet influence this process and result in changes in the size and cellular make-up of the tissue. The mechanism underlying the nutrient-driven changes in proliferation is not known, but may involve a shift in intracellular metabolism that allows for more nutrients to be used to manufacture new cells...
September 19, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28925263/partially-reversible-photo-induced-chemical-changes-in-a-mixed-ion-perovskite-material-for-solar-cells
#13
Ute B Cappel, Sebastian Svanström, Valeria Lanzilotto, Fredrik Oskar Lars Johansson, Kerttu Aitola, Bertrand Philippe, Erika Giangrisostomi, Ruslan Ovsyannikov, Torsten Leitner, Alexander Foehlisch, Svante Svensson, Nils Mårtensson, Gerrit Boschloo, Andreas Lindblad, Håkan Rensmo
Metal halide perovskites have emerged as materials of high interest for solar energy to electricity conversion and in particular the use of mixed ion structures has led to high power conversion efficiencies and improved stability. For this reason, it is important develop means to obtain atomic level understanding of the photo-induced behaviour of these materials including processes such as photo-induced phase separation and ion migration. In this paper, we implement a new methodology combining visible laser illumination of a mixed-ion perovskite ((FAPbI3)0...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28924995/enhanced-photoactivity-from-single-crystalline-srtao2n-nanoplates-synthesized-by-topotactic-nitridation
#14
Jie Fu, Sara Elizabeth Skrabalak
There are few methods yielding oxynitride crystals with defined shape, yet shape-controlled crystals often render enhanced photoactivity. Here, single-crystalline SrTaO2N nanoplates and polyhedra are achieved selectively. Central to these synthetic advances is the crystallization pathways used, where single-crystalline SrTaO2N nanoplates form by topotactic nitridation of aerosol-prepared Sr2Ta2O7 nanoplates and SrTaO2N polyhedra form by flux-assisted nitridation of the nanoplates. Evaluation of these materials for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) showed improved performance for the SrTaO2N nanoplates, with a record apparent quantum efficiency (AQE) of 6...
September 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28924581/data-on-the-effects-of-eif6-downmodulation-on-the-proportions-of-innate-and-adaptive-immune-system-cell-subpopulations-and-on-thymocyte-maturation
#15
Nicola Manfrini, Sara Ricciardi, Annarita Miluzio, Maya Fedeli, Alessandra Scagliola, Simone Gallo, Thure Adler, Dirk H Busch, Valerie Gailus-Durner, Helmut Fuchs, Martin Hrabě de Angelis, Stefano Biffo
The data described in this article are related to "High levels of eukaryotic Initiation Factor 6 (eIF6) are required for immune system homeostasis and for steering the glycolytic flux of TCR-stimulated CD4(+) T cells in both mice and humans" (Manfrini et al., in press) [1]. eIF6 is a translation initiation factor required for ribosomal biogenesis (Sanvito et al., 1999) [2] and for proper translational initiation (Gallo and Manfrini, 2015; Miluzio et al., 2016) [3], [4] whose protein abundance requires tight regulation...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28924380/intracellular-insulin-and-impaired-autophagy-in-a-zebrafish-model-and-a-cell-model-of-type-2-diabetes
#16
Xiang-Hui Meng, Bo Chen, Jing-Pu Zhang
Type 2 diabetes mellitus is characterized by insulin resistance. However, the complete molecular mechanism remains unclear. In this study, zebrafish were fed a long-term high-fat diet to induce type 2 diabetes, which resulted in a higher body weight, body mass index, more lipid vacuoles in liver, increased insulin transcription level in liver, brain and muscle, and high fasting blood glucose in the high-fat diet zebrafish. Oppositely, the transcription levels of insulin substrate-2 and glucose transporter 2 were significantly decreased, indicating insulin signaling pathway and glucose transport impaired in the insulin-targeting tissues...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28923105/genetic-engineering-of-human-nk-cells-to-express-cxcr2-improves-migration-to-renal-cell-carcinoma
#17
Veronika Kremer, Maarten Ligtenberg, Rosa Zendehdel, Christina Seitz, Annet Duivenvoorden, Erik Wennerberg, Eugenia Colón, Ann-Helén Scherman-Plogell, Andreas Lundqvist
BACKGROUND: Adoptive natural killer (NK) cell transfer is being increasingly used as cancer treatment. However, clinical responses have so far been limited to patients with hematological malignancies. A potential limiting factor in patients with solid tumors is defective homing of the infused NK cells to the tumor site. Chemokines regulate the migration of leukocytes expressing corresponding chemokine receptors. Various solid tumors, including renal cell carcinoma (RCC), readily secrete ligands for the chemokine receptor CXCR2...
September 19, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28922380/the-warburg-effect-as-an-adaptation-of-cancer-cells-to-rapid-fluctuations-in-energy-demand
#18
Tamir Epstein, Robert A Gatenby, Joel S Brown
To maintain optimal fitness, a cell must balance the risk of inadequate energy reserve for response to a potentially fatal perturbation against the long-term cost of maintaining high concentrations of ATP to meet occasional spikes in demand. Here we apply a game theoretic approach to address the dynamics of energy production and expenditure in eukaryotic cells. Conventionally, glucose metabolism is viewed as a function of oxygen concentrations in which the more efficient oxidation of glucose to CO2 and H2O produces all or nearly all ATP except under hypoxic conditions when less efficient (2 ATP/ glucose vs...
2017: PloS One
https://www.readbyqxmd.com/read/28922156/soluble-oligomers-require-a-ganglioside-to-trigger-neuronal-calcium-overload
#19
Roberta Cascella, Elisa Evangelisti, Alessandra Bigi, Matteo Becatti, Claudia Fiorillo, Massimo Stefani, Fabrizio Chiti, Cristina Cecchi
An altered distribution of membrane gangliosides (GM), including GM1, has recently been reported in the brains of Alzheimer's disease (AD) patients. Moreover, amyloid-positive synaptosomes obtained from AD brains were found to contain high-density GM1 clusters, suggesting a pathological significance of GM1 increase at presynaptic neuritic terminals in AD. Here, we show that membrane GM1 specifically recruits small soluble oligomers of the 42-residue form of amyloid-β peptide (Aβ42), with intracellular flux of Ca2+ ions in primary rat hippocampal neurons and in human neuroblastoma cells...
September 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28921701/an-exception-among-diatoms-unique-organization-of-genes-involved-in-isoprenoid-biosynthesis-in-rhizosolenia-setigera-ccmp-1694
#20
Victor Marco Emmanuel N Ferriols, Ryoko Yaginuma-Suzuki, Kazunari Fukunaga, Takashi Kadono, Masao Adachi, Shigeki Matsunaga, Shigeru Okada
The marine diatom Rhizosolenia setigera is unique among this group of microalgae given that it is one of only a handful of diatom species that can produce highly branched isoprenoid (HBI) hydrocarbons. In our efforts to determine distinguishing molecular characteristics in R. setigera CCMP 1694 that could help elucidate the underlying mechanisms for its ability to biosynthesize HBIs, we discovered the occurrence of independent genes encoding for two isopentenyl diphosphate isomerases (RsIDI1 and RsIDI2) and one squalene synthase (RsSQS), enzymes that catalyze non-consecutive steps in isoprenoid biosynthesis...
September 15, 2017: Plant Journal: for Cell and Molecular Biology
keyword
keyword
82179
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"