Results 1 to 10 of about 6,096,792 (236)

Use of argon to measure gas exchange in turbulent mountain streams [PDF]

open access: yesBiogeosciences, 2018
Gas exchange is a parameter needed in stream metabolism and trace gas emissions models. One way to estimate gas exchange is via measuring the decline of added tracer gases such as sulfur hexafluoride (SF6).
R. O. Hall Jr.   +3 more
doaj   +2 more sources

Research on Carbon Emissions and Carbon Reduction Paths of Power Generation Enterprises under the Dual Carbon Target [PDF]

open access: yesE3S Web of Conferences, 2023
Achieving the dual carbon goal is a profound and challenging social transformation. The difficulty is mainly reflected in the fact that economic growth is usually linked to energy consumption.
Yang Peng   +4 more
doaj   +1 more source

Gas exchange parameters and chlorophyll content as influenced by different chemicals and planting materials in pomegranate (Punica granatum L.) cv. Bhagwa [PDF]

open access: yesInternational Journal of Minor Fruits, Medicinal and Aromatic Plants, 2023
Soil drenching with paclobutrazol @ 0.375 g a.i. m-1 canopy diameter 60 days after bahar treatment to tissue culture plants improved gas exchange parameters viz., photosynthetic rate (PN) at both flowering (17.15 µmol m-2 s-1) and fruit set stages (11.62
S. Firoz Hussain
doaj   +1 more source

Numerical Analysis of Engine Exhaust Flow Parameters for Resolving Pre-Turbine Pulsating Flow Enthalpy and Exergy

open access: yesEnergies, 2021
Energy carried by engine exhaust pulses is critical to the performance of a turbine or any other exhaust energy recovery system. Enthalpy and exergy are commonly used concepts to describe the energy transport by the flow based on the first and second ...
Beichuan Hong   +2 more
doaj   +1 more source

Assessment of the unsteady performance of a turbocharger radial turbine under pulsating flow conditions: Parametric study and modeling

open access: yesEnergy Conversion and Management: X, 2022
A characteristic of radial turbines for turbocharger applications subject to pulsating flow is the deviation of the turbine performance compared with corresponding continuous flow conditions, typically associated with gas-stand experiments.
Roberto Mosca, Mihai Mihaescu
doaj   +1 more source

Modeling radial turbine performance under pulsating flow by machine learning method

open access: yesEnergy Conversion and Management: X, 2022
This work presents the development and application of a machine learning model to predict the unsteady performance of a turbocharger radial turbine subject to on-engine pulsating flow conditions.
Roberto Mosca   +2 more
doaj   +1 more source

Gas exchange measurements in the unsteady state

open access: yesPlant, Cell and Environment, 2021
Leaf level gas exchange is a widely used technique that provides real‐time measurement of leaf physiological properties, including CO2 assimilation (A), stomatal conductance to water vapour (g sw ) and intercellular CO2 (C i ).
A. Saathoff, J. Welles
semanticscholar   +1 more source

High Methane Emission From Palm Stems and Nitrous Oxide Emission From the Soil in a Peruvian Amazon Peat Swamp Forest

open access: yesFrontiers in Forests and Global Change, 2022
Tree stems in tropical peat swamp forests are known as considerable methane (CH4) emitters; however, little is known about their carbon dioxide (CO2) and nitrous oxide (N2O) exchange.
Kaido Soosaar   +18 more
doaj   +1 more source

Defining trends in the evolution of the Russian gas market

open access: yesRUDN Journal of Economics, 2023
The new “driving force” of the liberalization of the conditions for the functioning of the gas sector associated with demonopolization and the formation of an effective structure of the domestic gas market with a high level of competition and fair ...
Nelya I. Allayarova, Bata I. Ketsba
doaj   +1 more source

Tree stems are a net source of CH4 and N2O in a hemiboreal drained peatland forest during the winter period

open access: yesEnvironmental Research Communications, 2023
Nutrient-rich northern peatlands are often drained to enhance forest productivity, turning peatland soils into sinks of methane (CH _4 ) and sources of nitrous oxide (N _2 O).
Reti Ranniku   +5 more
doaj   +1 more source

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