scholarly journals Quantitative Characterization of Uncertainty in the Concentration–Response Relationship between Long-Term PM2.5 Exposure and Mortality at Low Concentrations

2020 ◽  
Vol 54 (16) ◽  
pp. 10191-10200
Author(s):  
Evan Coffman ◽  
Richard T. Burnett ◽  
Jason D. Sacks
Keyword(s):  
Response Relationship ◽  
Quantitative Characterization ◽  
Low Concentrations ◽  
Pm2.5 Exposure

scholarly journals Quantitative characterization of mineralized silk film remodeling during long-term osteoblast–osteoclast co-culture

Biomaterials ◽  
2014 ◽  
Vol 35 (12) ◽  
pp. 3794-3802 ◽  
Author(s):  
Rebecca S. Hayden ◽  
Kyle P. Quinn ◽  
Carlo A. Alonzo ◽  
Irene Georgakoudi ◽  
David L. Kaplan
Keyword(s):  
Quantitative Characterization ◽  
Silk Film

scholarly journals Two models based on local microscopic relaxations to explain long-term basic creep of concrete

2018 ◽  
Vol 474 (2220) ◽  
pp. 20180477 ◽  
Author(s):  
Matthieu Vandamme
Keyword(s):  
Creep Strain ◽  
Basic Creep ◽  
Creep Process ◽  
Physical Origin ◽  
Quantitative Characterization ◽  
Disjoining Pressures ◽  
Work Hardening Model ◽  
Kinetics Of

In this study, we propose an exhaustion model and an adapted work-hardening model to explain the long-term basic creep of concrete. In both models, the macroscopic creep strain originates from local microscopic relaxations. The two models differ in how the activation energies of those relaxations are distributed and evolve during the creep process. With those models, at least up to a few dozen MPa, the applied stress must not modify the rate at which those relaxations occur, but only enables the manifestation of each local microscopic relaxation into an infinitesimal increment of basic creep strain. The two models capture equally well several phenomenological features of the basic creep of concrete. They also make it possible to explain why the indentation technique enables the quantitative characterization of the long-term kinetics of logarithmic creep of cement-based materials orders of magnitude faster than by macroscopic testing. The models hint at a physical origin for the relaxations that is related to disjoining pressures.

scholarly journals Long-Term Management Policies of Reservoirs: Possible Re-Use of Dredged Sediments for Coastal Nourishment

Water ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 15 ◽  
Author(s):  
Annamaria De Vincenzo ◽  
Carmine Covelli ◽  
Antonio Molino ◽  
Marilena Pannone ◽  
Margherita Ciccaglione ◽  
...  
Keyword(s):  
Methodological Approach ◽  
Beach Sand ◽  
Coastal Protection ◽  
Quantitative Characterization ◽  
Reservoir Sediment ◽  
Reservoir Sediments ◽  
Management Policies ◽  
Term Management

This paper proposes a methodological approach to the re-use of reservoir sediments for coastal nourishment. The proposed approach represents a point of convergence between water and sediment management, coastal protection from erosion and the re-use of sediments dredged from reservoirs. In particular, this study indicates a general protocol of actions and a reference legislative scenario for the use of sediment from reservoirs for beach nourishment as an alternative to sediment from sea caves or land caves. Quantitative characterization of reservoir sediments and their qualitative characterization are the fundamental steps to define the compatibility between reservoir sediment and beach sand. The study was applied to a real case of Southern Italy known as the Guardialfiera Reservoir.

Long-term kinetics study and quantitative characterization of the antioxidant capacities of humic and humic-like substances

2016 ◽  
Vol 18 (4) ◽  
pp. 1355-1364 ◽  
Author(s):  
Olga I. Klein ◽  
Natalia A. Kulikova ◽  
Ivan S. Filimonov ◽  
Olga V. Koroleva ◽  
Andrey I. Konstantinov
Keyword(s):  
Kinetics Study ◽  
Quantitative Characterization ◽  
Antioxidant Capacities

Quantitative Characterization of the Surface Evolution for LiNi0.5Co0.2Mn0.3O2/Graphite Cell during Long-Term Cycling

2017 ◽  
Vol 9 (14) ◽  
pp. 12445-12452 ◽  
Author(s):  
Huiyuan Zheng ◽  
Qunting Qu ◽  
Guobin Zhu ◽  
Gao Liu ◽  
Vincent S. Battaglia ◽  
...  
Keyword(s):  
Quantitative Characterization ◽  
Surface Evolution ◽  
Graphite Cell

scholarly journals Isolation and Characterization of a Molybdenum-reducing and Carbamate-degrading Serratia sp. strain Amr-4 in soils from Egypt

2021 ◽  
Vol 3 (2) ◽  
pp. 25-32
Author(s):  
M. Abd. AbdEl-Mongy ◽  
M.F. Rahman ◽  
Mohd Yunus Shukor
Keyword(s):  
Carbon Sources ◽  
Biochemical Investigation ◽  
Isolation And Characterization ◽  
Low Concentrations ◽  
Bacteria Inhibition ◽  
High Concentrations ◽  
Reducing Bacteria ◽  
Bioremediation Agent

Physical or chemical procedures could efficiently remove contaminants including pesticides such as carbamates from high concentrations of toxicants. Bioremediation, on the other hand, is frequently a less expensive option in the long term when used at low concentrations. Isolation of multiple toxicants removing microorganisms is the goal of bioremediation. In this paper we report on the molybdenum reduction of the bacterium and its ability to grow on the carbamates carbofuran and carbaryl as carbon sources. Both the carbamates carbofuran and carbaryl cannot support molybdenum reduction when used as the sole carbon sources. Between pH 6.0 and 6.8 and between 30 and 34 oC, the bacterium is most efficient in converting molybdate to Mo-blue. For molybdate reduction, glucose was shown to be the strongest electron donor, with maltose and sucrose coming in second and third, respectively, and d-mannitol and d-adonitol coming in last. Phosphate concentrations of 2.5 to 7.5 mM and molybdate concentrations of 20 to 30 mM are also needed. Identical to that of a decreased phosphomolybdate, the Mo-blue produced by the new Mo-reducing bacteria has an absorption spectrum similar to prior Mo-reducing bacteria. Inhibition of molybdenum reduction was 73.3, 50.1, 50.1 and 20.7 percent, respectively, by mercury, copper, silver and lead at 2 ppm. The bacterium was tentatively identified as Serratia sp. strain Amr-4 after biochemical investigation. This bacterium's ability to detoxify a variety of toxicants is highly sought after, making it a significant bioremediation agent.

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