keyword
MENU ▼
Read by QxMD icon Read
search

P(v-a)CO2

keyword
https://www.readbyqxmd.com/read/29411877/contrasting-acclimation-abilities-of-two-dominant-boreal-conifers-to-elevated-co2-and-temperature
#1
Leonid V Kurepin, Zsofia R Stangl, Alexander G Ivanov, Vi Bui, Marin Mema, Norman P A Hüner, Gunnar Öquist, Danielle Way, Vaughan Hurry
High latitude forests will experience large changes in temperature and CO2 concentrations this century. We evaluated the effects of future climate conditions on two dominant boreal tree species, Pinus sylvestris L. and Picea abies (L.) H. Karst, exposing seedlings to three seasons of ambient (430 ppm) or elevated CO2 (750 ppm) and ambient temperatures, a +4 °C warming, or a +8 °C warming. Pinus sylvestris responded positively to warming: seedlings developed a larger canopy, maintained high net CO2 assimilation rates (Anet ) and acclimated dark respiration (Rdark )...
February 7, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29400450/multifunctional-metal-organic-frameworks-based-on-redox-active-rhenium-octahedral-clusters
#2
Yulia M Litvinova, Yakov M Gayfulin, Konstantin A Kovalenko, Denis G Samsonenko, Jan van Leusen, Ilya V Korolkov, Vladimir P Fedin, Yuri V Mironov
The redox-active rhenium octahedral cluster unit [Re6Se8(CN)6]4- was combined with Gd3+ ions and dicarboxylate linkers in novel types of metal-organic frameworks (MOFs) that display a set of functional properties. The hydrolytically stable complexes [{Gd(H2O)3}2(L)Re6Se8(CN)6]·nH2O (1, L = furan-2,5-dicarboxylate, fdc; 2, L = thiophene-2,5-dicarboxylate, tdc) exhibit a 3D framework of trigonal symmetry where 1D chains of [{Gd(H2O)3}2(L)]4+ are connected by [Re6Se8(CN)6]4- clusters. Frameworks contain spacious channels filled with H2O...
February 5, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29380487/effect-of-silane-heat-treatment-by-laser-on-the-bond-strength-of-a-repair-composite-to-feldspathic-porcelain
#3
Seyed Mohammad Reza Hakimaneh, Sayed Shojaedin Shayegh, Mehrsima Ghavami-Lahiji, Ahmad Chokr, Azizollah Moraditalab
PURPOSE: Ceramic restoration fracture may occur in the oral cavity. Intraoral repair of fractured porcelain could be advantageous to both patient and dentist. The aim of this study was to evaluate the effect of heat treatment of the silane coupling agent by Er:YAG and CO2 lasers on the microshear bond strength of a repair composite to feldspathic porcelain. MATERIALS AND METHODS: Sixty ceramic blocks were prepared and randomly divided into six groups (n = 10): (i) HF + silane (HS); (ii) silane + CO2 laser (SC); (iii) CO2 laser + silane (CS); (iv) silane + Er:YAG laser (SE); (v) Er:YAG laser + silane (ES); (vi) bur + HF + silane (BuHS)...
January 29, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29359759/theory-driven-design-of-high-valence-metal-sites-for-water-oxidation-confirmed-using-in-situ-soft-x-ray-absorption
#4
Xueli Zheng, Bo Zhang, Phil De Luna, Yufeng Liang, Riccardo Comin, Oleksandr Voznyy, Lili Han, F Pelayo García de Arquer, Min Liu, Cao Thang Dinh, Tom Regier, James J Dynes, Sisi He, Huolin L Xin, Huisheng Peng, David Prendergast, Xiwen Du, Edward H Sargent
The efficiency with which renewable fuels and feedstocks are synthesized from electrical sources is limited at present by the sluggish oxygen evolution reaction (OER) in pH-neutral media. We took the view that generating transition-metal sites with high valence at low applied bias should improve the activity of neutral OER catalysts. Here, using density functional theory, we find that the formation energy of desired Ni4+ sites is systematically modulated by incorporating judicious combinations of Co, Fe and non-metal P...
February 2018: Nature Chemistry
https://www.readbyqxmd.com/read/29334145/colloidal-cobalt-phosphide-nanocrystals-as-trifunctional-electrocatalysts-for-overall-water-splitting-powered-by-a-zinc-air-battery
#5
Hui Li, Qi Li, Peng Wen, Trey B Williams, Shiba Adhikari, Chaochao Dun, Chang Lu, Dominique Itanze, Lin Jiang, David L Carroll, George L Donati, Pamela M Lundin, Yejun Qiu, Scott M Geyer
Highly efficient and stable electrocatalysts, particularly those that are capable of multifunctionality in the same electrolyte, are in high demand for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). In this work, highly monodisperse CoP and Co2 P nanocrystals (NCs) are synthesized using a robust solution-phase method. The highly exposed (211) crystal plane and abundant surface phosphide atoms make the CoP NCs efficient catalysts toward ORR and HER, while metal-rich Co2 P NCs show higher OER performance owing to easier formation of plentiful Co2 P@COOH heterojunctions...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29323116/impact-on-short-lived-climate-forcers-increases-projected-warming-due-to-deforestation
#6
C E Scott, S A Monks, D V Spracklen, S R Arnold, P M Forster, A Rap, M Äijälä, P Artaxo, K S Carslaw, M P Chipperfield, M Ehn, S Gilardoni, L Heikkinen, M Kulmala, T Petäjä, C L S Reddington, L V Rizzo, E Swietlicki, E Vignati, C Wilson
The climate impact of deforestation depends on the relative strength of several biogeochemical and biogeophysical effects. In addition to affecting the exchange of carbon dioxide (CO2) and moisture with the atmosphere and surface albedo, vegetation emits biogenic volatile organic compounds (BVOCs) that alter the formation of short-lived climate forcers (SLCFs), which include aerosol, ozone and methane. Here we show that a scenario of complete global deforestation results in a net positive radiative forcing (RF; 0...
January 11, 2018: Nature Communications
https://www.readbyqxmd.com/read/29291278/treatment-preferences-in-patients-with-early-glottic-cancer
#7
Yda van Loon, Martine Hendriksma, Ton P M Langeveld, Martin A de Jong, Rob J Baatenburg de Jong, Elisabeth V Sjögren
OBJECTIVE: For early glottic carcinoma, the 2 main treatment modalities are radiotherapy (RT) and transoral CO2 laser microsurgery (TLM). The aim of this study was to investigate treatment preferences and considerations in patients with early glottic carcinoma (T1-T2) who were given a choice between TLM and RT. SUBJECTS AND METHODS: Patients with early glottic cancer (suspected or confirmed extended T1 or limited T2) were counseled by an ENT-surgeon. A subset of 32 patients was also counseled by a radiotherapist...
December 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29236872/photosynthetic-capacity-and-water-use-efficiency-in-ricinus-communis-l-under-drought-stress-in-semi-humid-and-semi-arid-areas
#8
Claudiana M Dos Santos, Laurício Endres, Vilma M Ferreira, José V Silva, Eduardo V Rolim, Humberto C L Wanderley Filho
Castor bean is one of the crops with potential to provide raw material for production of oils for biodiesel. This species possess adaptive mechanisms for maintaining the water status when subjected to drought stress. A better understanding these mechanisms under field conditions can unravel the survival strategies used by this species. This study aimed to compare the physiological adaptations of Ricinus communis (L.) in two regions with different climates, the semi-arid and semi-humid subject to water stress...
December 7, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29233851/incremental-shuttle-walk-test-to-assess-and-prescribe-exercise-for-subjects-with-bronchiectasis-hallway-versus-treadmill
#9
Cristiane S Oliveira, Anderson José, Crislaine O Santos, Cristiane H Y de Oliveira, Thiago C O Carvalho, Rejane A S de Castro, Jessyca P R Selman, Anderson A de Camargo, Simone Dal Corso
INTRODUCTION: The incremental shuttle walk test was initially developed to be carried out in a hallway (ISWT-H) but has been modified to be performed on a treadmill (ISWT-T). However, it is still unknown whether performance on ISWT-H and ISWT-T are similar in patients with bronchiectasis. In this study, we compared the performance, physiological responses, and perception of effort between the ISWT-T with a handrail and ISWT-H for subjects with bronchiectasis. We also sought to estimate and compare the prescription for training intensity with both tests...
December 12, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29199178/carbonic-anhydrase-2-like-in-the-giant-clam-tridacna-squamosa-characterization-localization-response-to-light-and-possible-role-in-the-transport-of-inorganic-carbon-from-the-host-to-its-symbionts
#10
Yuen K Ip, Clarissa Z Y Koh, Kum C Hiong, Celine Y L Choo, Mel V Boo, Wai P Wong, Mei L Neo, Shit F Chew
The fluted giant clam, Tridacna squamosa, lives in symbiosis with zooxanthellae which reside extracellularly inside a tubular system. Zooxanthellae fix inorganic carbon (Ci) during insolation and donate photosynthate to the host. Carbonic anhydrases catalyze the interconversion of CO2 and HCO3-, of which carbonic anhydrase 2 (CA2) is the most ubiquitous and involved in many biological processes. This study aimed to clone a CA2 homolog (CA2-like) from the fleshy and colorful outer mantle as well as the thin and whitish inner mantle of T...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29197950/the-p-type-atpase-ctpg-preferentially-transports-cd2-across-the-mycobacterium-tuberculosis-plasma-membrane
#11
Marcela López, Laudy-Viviana Quitian, Martha-Nancy Calderón, Carlos-Y Soto
P1B-type ATPases are involved in heavy metal transport across the plasma membrane. Some Mycobacterium tuberculosis P-type ATPases are induced during infection, suggesting that this type of transporter could play a critical role in mycobacterial survival. To date, the ion specificity of M. tuberculosis heavy metal-transporting P1B-ATPases is not well understood. In this work, we observed that, although divalent heavy metal cations such as Cu2+, Co2+, Ni2+, Zn2+ Cd2+ and Pb2+ stimulate the ATPase activity of the putative P1B-type ATPase CtpG in the plasma membrane, whole cells of M...
December 2, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/29180485/validation-of-whole-room-indirect-calorimeters-refinement-of-current-methodologies
#12
Russell Rising, Thomas Foerster, Avigdor D Arad, Jeanine Albu, Xavier Pi-Sunyer
Whole room indirect calorimeter (WRIC) validation techniques consist of propane combustion (PC) or infusion of mixed carbon dioxide (CO2) and nitrogen (N2) by a precision blender (PB). To determine the best method, PC of 6, 10, 22-h and PB infusions of 6, 10, and 14-h, were conducted. The 14-h infusion consisted of two metabolic settings. Energy expenditure (EE; kJ), ventilation (V; liters/min) of oxygen (VO2), VCO2, and respiratory quotient (VCO2/VO2) obtained from the WRIC were extrapolated to the respective test durations and compared to similarly calculated values...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29173632/microbiological-chemical-and-sensory-spoilage-analysis-of-raw-atlantic-cod-gadus-morhua-stored-under-modified-atmospheres
#13
L Kuuliala, Y Al Hage, A-G Ioannidis, M Sader, F-M Kerckhof, M Vanderroost, N Boon, B De Baets, B De Meulenaer, P Ragaert, F Devlieghere
During fish spoilage, microbial metabolism leads to the production of volatile organic compounds (VOCs), characteristic off-odors and eventual consumer rejection. The aim of the present study was to contribute to the development of intelligent packaging technologies by identifying and quantifying VOCs that indicate spoilage of raw Atlantic cod (Gadus morhua) under atmospheres (%v/v CO2/O2/N2) 60/40/0, 60/5/35 and air. Spoilage was examined by microbiological, chemical and sensory analyses over storage time at 4 or 8 °C...
April 2018: Food Microbiology
https://www.readbyqxmd.com/read/29164591/trend-of-decreasing-length-of-cervical-cone-excision-during-the-last-20-years
#14
F Sopracordevole, N Clemente, G Delli Carpini, G Giorda, A Del Fabro, L Moriconi, G De Piero, L Alessandrini, V Canzonieri, M Buttignol, M Nicodemo, A Ciavattini
OBJECTIVE: The aim of the present investigation was to evaluate the cervical conizations performed in the last 20 years in a single institution, with a particular interest in analyzing the trend of the length of cone excisions. PATIENTS AND METHODS: A retrospective cohort study of women who underwent a CO2-laser cervical conization between January 1996 and December 2015. Cytological abnormalities on referral pap smear, colposcopic findings and pertinent clinical and socio-demographic characteristics of each woman were collected...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29139094/investigating-the-therapeutic-potential-and-mechanism-of-curcumin-in-breast-cancer-based-on-rna-sequencing-and-bioinformatics-analysis
#15
Rong Wang, Jinbin Li, Yulan Zhao, Yapeng Li, Ling Yin
BACKGROUND: Breast cancer is a prevalent cancer in female. This study aims to investigate the therapeutic potential and mechanism of curcumin in breast cancer. METHODS: After cultivation, human breast cancer cells (MCF-7 cells) were treated with 0.1% (v/v) 15 µmol/ml curcumin-dimethylsulfoxide solution and 0.1% (v/v) dimethylsulfoxide, respectively, at 37 °C and 5% CO2 for 48 h. Total RNA was extracted, cDNA library was constructed, and cDNAs were amplified and sequenced...
November 14, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29134193/snowball-earth-climate-dynamics-and-cryogenian-geology-geobiology
#16
Paul F Hoffman, Dorian S Abbot, Yosef Ashkenazy, Douglas I Benn, Jochen J Brocks, Phoebe A Cohen, Grant M Cox, Jessica R Creveling, Yannick Donnadieu, Douglas H Erwin, Ian J Fairchild, David Ferreira, Jason C Goodman, Galen P Halverson, Malte F Jansen, Guillaume Le Hir, Gordon D Love, Francis A Macdonald, Adam C Maloof, Camille A Partin, Gilles Ramstein, Brian E J Rose, Catherine V Rose, Peter M Sadler, Eli Tziperman, Aiko Voigt, Stephen G Warren
Geological evidence indicates that grounded ice sheets reached sea level at all latitudes during two long-lived Cryogenian (58 and ≥5 My) glaciations. Combined uranium-lead and rhenium-osmium dating suggests that the older (Sturtian) glacial onset and both terminations were globally synchronous. Geochemical data imply that CO2 was 10(2) PAL (present atmospheric level) at the younger termination, consistent with a global ice cover. Sturtian glaciation followed breakup of a tropical supercontinent, and its onset coincided with the equatorial emplacement of a large igneous province...
November 2017: Science Advances
https://www.readbyqxmd.com/read/29128766/low-biodegradability-of-dissolved-organic-matter-and-trace-metals-from-subarctic-waters
#17
Olga V Oleinikova, Liudmila S Shirokova, Olga Y Drozdova, Sergey A Lapitskiy, Oleg S Pokrovsky
The heterotrophic mineralization of dissolved organic matter (DOM) controls the CO2 flux from the inland waters to the atmosphere, especially in the boreal waters, although the mechanisms of this process and the fate of trace metals associated with DOM remain poorly understood. We studied the interaction of culturable aquatic (Pseudomonas saponiphila) and soil (Pseudomonas aureofaciens) Gammaproteobacteria with seven different organic substrates collected in subarctic settings. These included peat leachate, pine crown throughfall, fen, humic lake, stream, river, and oligotrophic lake with variable dissolved organic carbon (DOC) concentrations (from 4 to 60mgL(-1))...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29127793/pest-management-under-climate-change-the-importance-of-understanding-tritrophic-relations
#18
REVIEW
V Castex, M Beniston, P Calanca, D Fleury, J Moreau
Plants and insects depend on climatic factors (temperature, solar radiation, precipitations, relative humidity and CO2) for their development. Current knowledge suggests that climate change can alter plants and insects development and affect their interactions. Shifts in tritrophic relations are of particular concern for Integrated Pest Management (IPM), because responses at the highest trophic level (natural enemies) are highly sensitive to warmer temperature. It is expected that natural enemies could benefit from better conditions for their development in northern latitudes and IPM could be facilitated by a longer period of overlap...
November 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29124092/dataset-of-the-livability-performance-of-the-city-of-birmingham-uk-as-measured-by-its-citizen-wellbeing-resource-security-resource-efficiency-and-carbon-emissions
#19
Joanne M Leach, Susan E Lee, Christopher T Boyko, Claire J Coulton, Rachel Cooper, Nicholas Smith, Hélène Joffe, Milena Büchs, James D Hale, Jonathan P Sadler, Peter A Braithwaite, Luke S Blunden, Valeria De Laurentiis, Dexter V L Hunt, AbuBakr S Bahaj, Katie Barnes, Christopher J Bouch, Leonidas Bourikas, Marianna Cavada, Andrew Chilvers, Stephen J Clune, Brian Collins, Ellie Cosgrave, Nick Dunn, Jane Falkingham, Patrick James, Corina Kwami, Martin Locret-Collet, Francesca Medda, Adriana Ortegon, Serena Pollastri, Cosmin Popan, Katerina Psarikidou, Nick Tyler, John Urry, Yue Wu, Victoria Zeeb, Chris D F Rogers
This data article presents the UK City LIFE1 data set for the city of Birmingham, UK. UK City LIFE1 is a new, comprehensive and holistic method for measuring the livable sustainability performance of UK cities. The Birmingham data set comprises 346 indicators structured simultaneously (1) within a four-tier, outcome-based framework in order to aid in their interpretation (e.g., promote healthy living and healthy long lives, minimize energy use, uncouple economic vitality from CO2 emissions) and (2) thematically in order to complement government and disciplinary siloes (e...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29081960/hybrid-photocathode-consisting-of-a-cugao2-p-type-semiconductor-and-a-ru-ii-re-i-supramolecular-photocatalyst-non-biased-visible-light-driven-co2-reduction-with-water-oxidation
#20
Hiromu Kumagai, Go Sahara, Kazuhiko Maeda, Masanobu Higashi, Ryu Abe, Osamu Ishitani
A CuGaO2 p-type semiconductor electrode was successfully employed for constructing a new hybrid photocathode with a Ru(ii)-Re(i) supramolecular photocatalyst (RuRe/CuGaO2). The RuRe/CuGaO2 photocathode displayed photoelectrochemical activity for the conversion of CO2 to CO in an aqueous electrolyte solution with a positive onset potential of +0.3 V vs. Ag/AgCl, which is 0.4 V more positive in comparison to a previously reported hybrid photocathode that used a NiO electrode instead of CuGaO2. A photoelectrochemical cell comprising this RuRe/CuGaO2 photocathode and a CoO x /TaON photoanode enabled the visible-light-driven catalytic reduction of CO2 using water as a reductant to give CO and O2 without applying any external bias...
June 1, 2017: Chemical Science
keyword
keyword
85492
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"