نتایج جستجو برای: فازگازی co2

تعداد نتایج: 70760  

Journal: :Journal of the American Chemical Society 2017
Tianhan Kai Min Zhou Zhiyao Duan Graeme A Henkelman Allen J Bard

The electrocatalytic reduction of CO2 has been studied extensively and produces a number of products. The initial reaction in the CO2 reduction is often taken to be the 1e formation of the radical anion, CO2•-. However, the electrochemical detection and characterization of CO2•- is challenging because of the short lifetime of CO2•-, which can dimerize and react with proton donors and even mild ...

2013
Zhihong Sun Katja Hüve Vivian Vislap Ülo Niinemets

Isoprene emissions importantly protect plants from heat stress, but the emissions become inhibited by instantaneous increase of [CO2], and it is currently unclear how isoprene-emitting plants cope with future more frequent and severe heat episodes under high [CO2]. Hybrid aspen (Populus tremula x Populus tremuloides) saplings grown under ambient [CO2] of 380 μmol mol(-1) and elevated [CO2] of 7...

Journal: :Journal of the American Mosquito Control Association 2008
Wilhelmine H Meeraus Jennifer S Armistead Jorge R Arias

Aedes albopictus is a potential West Nile virus bridge vector in Northern Virginia; however, information regarding its virus transmission dynamics is limited, as this species is not readily collected in existing traps. This study used 5 replicates of a 5 x 5 Latin square to evaluate the efficiency and effectiveness of 2 novel host-seeking mosquito traps (the BG-Sentinel and the Collapsible Mosq...

2007
A. Engel K. G. Schulz

The influence of seawater carbon dioxide (CO2) concentration on the size distribution of suspended particles (2–60μm) and on phytoplankton abundance was investigated during a mesocosm experiment at the large scale facility (LFS) in Bergen, Norway, in the frame of the Pelagic Ecosystem CO2 Enrichment study (PeECE II). In nine outdoor enclosures the partial pressure of CO2 in seawater was modifie...

رضا عابدینی, فاطره درستی, محمدرضا امیدخواه

در این پژوهش، اثر چارچوب ­های فلزی-آلی NH2-MIL 53 بر خواص گازتراوایی غشای پلیمری پلی(4- متیل-1- پنتین) (PMP) بررسی شده است. از روش ­های مختلفی نظیر FTIR، DSC، SEM و آزمون جذب گاز به همراه آزمون جداسازی CO2/CH4 به حالت گاز خالص و مخلوط گازی برای بررسی آثار گروه عاملی  NH2- بر خواص غشاهای شبکه ترکیبی بهره گرفته شد. نتایج حاصل از DSC نشان­ دهنده افزایش دمای انتقال شیشه­ ای (Tg) غشاها به ازای ازدیا...

Journal: Journal of Nanoanalysis 2019

This study aimed to investigate the adsorption of CH4, CO2, H2S at a temperature of 298.15 K and pressurerange of 0.1 to 30 atm, and compare the results with experimental data for MIL-47 using GCMC. Themaximum CH4, CO2 and H2S adsorptions were 3.6, 10.45, and 12.57 mol.kg-1, respectively. In addition, theselectivity for binary mixtures of CH4/CO2 and CH4/H2S was calculated. Th...

2001
Luiz C. Argenta Xuetong Fan James P. Mattheis

Fruit maturity, diphenylamine (DPA) treatment and controlled atmosphere (CA) storage regimes were evaluated as factors affecting development of ‘Fuji’ apple CO2 injury. The incidence and severity of CO2 injury (brown-heart) increased with advanced maturity and greater watercore severity at harvest. The development of CO2 injury during storage was prevented by DPA treatment. The severity of CO2 ...

Journal: :Acta cirurgica brasileira 2014
Tales Rubens de Nadai Ana Paula Cassiano Silveira Ariadne Santana e Neves Monteiro Debora Ribeiro Campos Marco Tulio Rezende de Carvalho Agnes Afrodite Sumarelli Albuquerque Andrea Carla Celotto Paulo Roberto Barbosa Evora

PURPOSE To create in vitro a model to generate acidosis by CO2 bubbling "organ chambers", which would be useful for researchers that aim to study the effects of acid-base disturbs on the endothelium-dependent vascular reactivity. METHODS Eighteen male Wistar rats (230-280 g) were housed, before the experiments, under standard laboratory conditions (12h light/dark cycle at 21°C), with free acc...

1997
J. RENÉE BROOKS LAWRENCE B. FLANAGAN GREGORY T. VARNEY JAMES R. EHLERINGER

change, CO2 concentrations, and refixation of respired CO2 in stands of Populus tremuloides Michx., Pinus banksiana Lamb. and Picea mariana (Mill.) B.S.P. at the northern and southern boundaries of the central Canadian boreal forest. Midsummer gas exchange rates in Populus tremuloides were over twice those of the two conifer species, and Pinus banksiana rates were greater than Picea mariana rat...

2014
Peter B. Reich Sarah E. Hobbie Tali D. Lee

Rising atmospheric CO2 concentrations can fertilize plant growth. The resulting increased plant uptake of CO2 could, in turn, slow increases in atmospheric CO2 levels and associated climate warming. CO2 fertilization e ects may be enhanced when water availability is low, because elevated CO2 also leads to improved plant water-use e ciency. However, CO2 fertilization e ects may be weaker when pl...

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