scholarly journals Gross ecosystem photosynthesis causes a diurnal pattern in methane emission from rice

2012 ◽  
Vol 39 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jaclyn A. Hatala ◽  
Matteo Detto ◽  
Dennis D. Baldocchi
Keyword(s):  
Methane Emission ◽  
Diurnal Pattern ◽  
Gross Ecosystem Photosynthesis

Measurements of methane emission from a temperate wetland by the eddy covariance method

2013 ◽  
Vol 27 (3) ◽  
pp. 283-290 ◽  
Author(s):  
N. Kowalska ◽  
B.H. Chojnicki ◽  
J. Rinne ◽  
S. Haapanala ◽  
P. Siedlecki ◽  
...  
Keyword(s):  
Eddy Covariance ◽  
Water Table ◽  
Methane Emission ◽  
Strong Correlation ◽  
Vegetation Types ◽  
Diurnal Pattern ◽  
Eddy Covariance Method ◽  
Temperate Wetland ◽  
Eddy Covariance System ◽  
Methane Efflux

Abstract Methane emission from a wetland was measured with the eddy covariance system. The location of the system allowed observation of methane efflux from areas that were covered by different vegetation types. The data presented in this paper were collected in the period between the13th of June and the 31st of August 2012. During the warmest months of the summer, there was no strong correlation between methane emissions and either the water table depth or peat temperature. The presence of reed and cattail contributed to a pronounced diurnal pattern of the flux and lower methane emission, while areas covered by sedges emitted higher amounts more with no clear diurnal pattern.

Diurnal pattern of insulin requirements in insulin-dependent diabetics

1982 ◽  
Vol 42 (1) ◽  
pp. 63-68 ◽  
Author(s):  
E. R. Mathiesen ◽  
P. Rubin ◽  
J. Sandahl Christiansen ◽  
P. Aaby Svendsen ◽  
T. Lauritzen ◽  
...  
Keyword(s):  
Diurnal Pattern ◽  
Insulin Requirements ◽  
Insulin Dependent

Salivary C-reactive protein among at-risk adolescents: A methods investigation of out of range immunoassay data

2018 ◽  
Author(s):  
Elizabeth Landau ◽  
John Arthur Trinder ◽  
Julian Simmons ◽  
Monika Raniti ◽  
Matthew Blake ◽  
...  
Keyword(s):  
At Risk ◽  
Temporal Stability ◽  
Management Technique ◽  
Clinical Settings ◽  
Diurnal Pattern ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Treatment Techniques ◽  
Salivary Biomarker ◽  
At Risk Adolescents

Inflammatory markers including C-Reactive Protein (CRP) are increasingly used within research and clinical settings. Yet, varying methodologies for cleaning immunoassay data with out of range (OOR) samples may alter characteristic levels of CRP, thereby obscuring interpretation and reliability. This study investigated the influence of eight immunoassay OOR data treatment techniques on salivary CRP (sCRP) samples from at-risk adolescents. Participants from the ‘Sleep and Education: learning New Skills Early’ (SENSE) Study were 86 adolescents at-risk for depression (50 female), aged 14.29 years (SD=1.04). ANOVA results showed no statistically significant differences in average morning (F(7, 590)=1.24, p=.28) and evening (F(7, 599)=1.29, p=.25) values produced by each OOR data cleaning technique. However, varying techniques produced differences in the magnitude of Pearson’s correlations between consecutive saliva samples (r’s between .27 – .78), and influenced the significance of a sCRP diurnal pattern; two techniques produced statistically higher morning than evening sCRP levels (t(85)=2.70, p=.01 and t(85)=2.67, p=.01), whereas six techniques failed to find statistical differences between morning and evening sCRP levels (p’s >.05). Varying techniques also produced statistically divergent associations between sCRP and age and depressive symptoms. Results from this study provide evidence for the temporal stability of sCRP among adolescents, show winsorization as an effective OOR data management technique, and highlight the influence of methodological decisions in cleaning salivary biomarker data and the need for consistency within the field.

Influence of the Bachatsky Earthquake on Methane Emission in Roadways in Coal Mines

2019 ◽  
Vol 55 (5) ◽  
pp. 695-700 ◽  
Author(s):  
M. V. Kurlenya ◽  
M. N. Tsupov ◽  
A. V. Savchenko
Keyword(s):  
Methane Emission ◽  
Coal Mines

Effects of Sericea Lespedeza on Feed Intake, Digestion, and Ruminal Methane Emission in Hair Sheep

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 41-41
Author(s):  
Luana L Ribeiro ◽  
Ryszard Puchala ◽  
Arthur L Goetsch
Keyword(s):  
Methane Emission ◽  
Feed Intake ◽  
Dry Matter ◽  
Coconut Oil ◽  
Mixed Effects ◽  
Repeated Measure ◽  
Lespedeza Cuneata ◽  
Hair Sheep ◽  
Initial Body Weight ◽  
Sericea Lespedeza

Abstract Eighteen Katahdin (initial body weight of 74 kg; SEM=1.8) and 18 St. Croix ewes (55 kg; SEM=1.3) were used in an experiment with four 6-wk periods to determine effects of dietary level of Sericea lespedeza (Lespedeza cuneata) containing 5.8% condensed tannins (dry matter; DM) and other supplemental ingredients on feed intake, digestion, and ruminal methane emission. Diets were consumed ad libitum and included a concentrate supplement at 0.45% BW (DM). Alfalfa was the basal forage for control (CON), ionophore (ION; lasalocid at 33 mg/kg DM), coconut oil (3%; CCO), and soybean oil (3%; SBO) diets, and forage in moderate- and high-lespedeza diets was a 1:1 mixture of alfalfa and lespedeza and all lespedeza, respectively (MSL and HSL, respectively). Data were analyzed with a 2 x 6 factorial arrangement of treatments, period as a repeated measure, and a mixed effects model. Digestion and methane emission were determined in weeks 4, 10, 16, and 22. Total DM intake was similar among treatments (P = 0.070) but numerically greatest for HSL (1,197, 1,297, 1,491, 1,203, 1,195, and 1,207 g/d; SEM=81.1), OM digestibility ranked (P < 0.05) CON, ION, CCO, and SBO > MSL > HSL (69.2, 57.6, 50.3, 66.3, 66.0, and 68.7%; SEM=1.57), and digestible OM intake was similar among treatments (P = 0.517; 697, 607, 589, 598, 635, and 690 g/d for CON, MSL, HSL, ION, CCO, and SBO, respectively; SEM=50.4). There were no interactions involving time in ruminal methane emission, which was greatest among treatments for CON (P < 0.05) in MJ/d (1.39, 0.93, 0.90, 0.92, 0.85, and 0.96; SEM=0.069) and relative to digestible energy intake (20.6, 15.7, 16.8, 16.1, 13.7, and 13.9% for CON, MSL, HSL, ION, CCO, and SBO, respectively; SEM=1.223). In conclusion, dietary inclusion of Sericea lespedeza may offer a natural and sustainable means of decreasing ruminal methane emission by hair sheep as previously shown in goats, with a magnitude of impact similar to that of some other supplemental dietary ingredients.

scholarly journals Neonicotinoids stimulate H2-limited methane emission in Periplaneta americana through the regulation of gut bacterium community

2021 ◽  
Vol 285 ◽  
pp. 117237
Author(s):  
Haibo Bao ◽  
Haoli Gao ◽  
Jianhua Zhang ◽  
Haiyan Lu ◽  
Na Yu ◽  
...  
Keyword(s):  
Methane Emission ◽  
Periplaneta Americana
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