Results 91 to 100 of about 34,873 (245)

Assessing Seasonal Effects on Identification of Cultivation Methods of Short–Growth Cycle Brassica chinensis L. Using IRMS and NIRS

Foods
Seasonal (temporal) variations can influence the δ13C, δ2H, δ18O, and δ15N values and nutrient composition of organic (ORG), green (GRE), and conventional (CON) vegetables with a short growth cycle.
Xing Liu, Kai Fan, Yangyang Lu, Hong Zhao, Qinxiong Rao, Hao Geng, Yijiao Chen, Karyne Maree Rogers, Weiguo Song   +8 more
doaj   +1 more source

Exploratory Analysis of Sustainable Consumption and Production Factors in Services: Insights From Four Case Studies Using Interpretive Structural Modeling

Sustainable Development, EarlyView.
ABSTRACT This study investigates how 14 sustainable consumption and production (SCP) factors interact across four service categories—Mass Service, Professional Service, Service Factory, and Service Shop—using interpretive structural modeling (ISM). ISM enables the identification and hierarchical classification of interdependencies among SCP factors in ...
Amanda Duarte Feitosa, Fagner José Coutinho de Melo, André Philippi Gonzaga de Albuquerque, Naia Antunis de Rezende, Denise Dumke de Medeiros   +4 more
wiley   +1 more source

An Automatic Injection Device and the Method for Carbon and Oxygen Isotopes Analyses of Carbon Monoxide

Zhipu Xuebao
Carbon monoxide (CO) is an essential component of air, and it arises from anthropogenic sources and natural sources. These different sources of CO have significant differences in carbon and oxygen isotopic values, therefore the carbon and oxygen isotopic
Xi-jie YIN, Hai-li YANG, Pei-yu CHEN
doaj   +1 more source

Positionally dependent ^(15)N fraction factors in the UV photolysis of N_2O determined by high resolution FTIR spectroscopy [PDF]

, 2000
Positionally dependent fractionation factors for the photolysis of isotopomers of N_2O in natural abundance have been determined by high resolution FTIR spectroscopy at three photolysis wavelengths.
Blake, G. A., Esler, M. B., Griffiths, D. W. T., Rahn, T., Turatti, F., Wilson, S. R., Zhang, H.   +6 more
core  

Long‐term protection in grasslands enhances soil carbon storage through reduced disturbance and community trait diversity–environment adaptations

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how ecological disturbance and plant community traits regulate soil carbon storage is critical for predicting ecosystem feedbacks to global change and designing sustainable land‐use strategies.
Yves Theoneste Murindangabo, Ondřej Mudrák, Martin Bartuška, Jaroslava Frouzová, Olha Kachalová, Jakub Houška, Jan Frouz   +6 more
wiley   +1 more source

Working standards and analytical framework for CSIA: isotopic composition (δ13C, δ15N, and δ34S) of 21 amino acids and 7 nucleobases

Progress in Earth and Planetary Science
We determined the carbon and nitrogen isotope compositions of biologically important 21 amino acids and 7 nucleobases, which are used as working standards. These isotopic compositions were determined using a high-sensitivity elemental analyzer coupled to
Nanako O. Ogawa, Yoshinori Takano, Yu Itahashi, Naoto F. Ishikawa, Naohiko Ohkouchi   +4 more
doaj   +1 more source

Diet, phenology and body size shape nutrient release by songbirds

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Animals can dramatically alter ecosystem structure and function through the cycling and transport of nutrients in their waste. While birds are particularly capable of influencing nutrient cycles due to their high mobility, abundance, metabolism and functional diversity,
Linsey Chen, Alexander S. Flecker, Ethan S. Duvall   +2 more
wiley   +1 more source

Simultaneous determination of wine sugars, glycerol and organic acids 13C/12C isotopic ratio by ion chromatography-co-IRMS

BIO Web of Conferences, 2014
Ion chromatography (IC) isotope ratio mass spectrometry (IRMS) coupling is possible using a liquid interface allowing chemical oxidation (co) of organic compounds.
Guyon Francois, Gaillard Laetitia, Desplanche Sarah, Sabathié Nathalie, Salagoity Marie-Hélène   +4 more
doaj   +1 more source

Stable Carbon and Oxygen Isotope Analysis of Carbonates and DIC Using the Delta Ray Isotope Ratio Infrared Spectrometer (IRIS): Precise and Accurate Measurements Applying a 3-Point Calibration and Standard Bracketing. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale The Delta Ray Isotope Ratio Infrared Spectrometer enables to determine δ13C and δ18O values of CO2. The measurements are calibrated against internal reference gas standards. For discrete carbonate or dissolved inorganic carbon (DIC) samples, the manufacturer recommends a calibration against two isotopically different carbonate ...
Hansen M, Brettschneider J, Vonhof H, Scholz D.   +3 more
europepmc   +2 more sources

Linear circuit models for on-chip quantum electrodynamics

, 2011
We present equivalent circuits that model the interaction of microwave resonators and quantum systems. The circuit models are derived from a general interaction Hamiltonian.
Csaba, György, Jirauschek, Christian, Lugli, Paolo, Mátyás, Alpár, Peretti, Federico   +4 more
core   +1 more source