scholarly journals SOIL MIX WITH QUICKLIME FOR MOISTURE CONTENT REDUCTION TO OPTIMUM OF COMPACTION. LABORATORY AND CASE STUDY

2014 ◽  
Author(s):  
Ernest Olinic
Keyword(s):  
Moisture Content ◽  
Soil Mix

scholarly journals Measurement of leaf lamina moisture with a low-cost electrical humidity sensor: case study on a wheat water-mutant

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Agata Rascio ◽  
Michele Rinaldi ◽  
Giuditta De Santis ◽  
Nicola Pecchioni ◽  
Gabriele Palazzo ◽  
...  
Keyword(s):  
Moisture Content ◽  
Electrical Resistance ◽  
Low Cost ◽  
Bound Water ◽  
Genotypic Differences ◽  
Wild Type ◽  
Leaf Lamina ◽  
Mature Leaves ◽  
Moisture Meter

Abstract Background The presence and persistence of water on the leaf can affect crop performance and thus might be a relevant trait to select for or against in breeding programmes. Low-cost, rapid and relatively simple methods are of significant importance for screening of large populations of plants for moisture analysis of detached leaves. Leaf moisture can be detected using an electric circuit, where the resistance changes are proportional to the moisture of the measured surface. In this study, we present a protocol to analyse genotypic differences through the electrical properties of living or stored tissues, performed using a commercial device. Expanded and non-expanded leaves were compared to determine the effects of leaf maturity on these data. Two wheat genotypes that differ in tissue affinity for bound water were used to define the influence of water status. Results The device indirectly estimates leaf moisture content using two electrodes applied to the leaf lamina of fresh and stored samples. Single moisture readings using this moisture meter had mean execution time of ~ 1.0 min. Exponential associations provided good fits for relationships between the moisture meter reading (MMR) and the electrical resistance applied to the electrodes. MMR normalised for the water/ dry matter ratio (MMRnorm) was lower for mature leaves of the water-mutant than those of wild-type, for the fully hydrated fresh leaves. MMR of fully mature leaves when partially dehydrated and measured after 10 min at 27 °C and 40% relative humidity was greater for the water-mutant than the wild-type. Conclusions This case study provides a low-cost tool to compare electrical-resistance estimates of leaf moisture content, together with a promising and rapid phenotyping protocol for genotypic screening of wheat under standard environmental conditions. Measurement of changes in MMR with time, of fresh and partially dehydrated leaves, or of MMR normalised to tissue water content allowed for differentiation between the genotypes. Furthermore, the differences observed between genotypes that here relate particular to tissue affinity for bound water suggest that not only the free-water fraction, but also other water fractions, can affect these electrically estimated leaf moisture measures.

Nouvelle Autoroute 30: a Champlain clay crust earthworks case study

2015 ◽  
Vol 52 (3) ◽  
pp. 295-304 ◽  
Author(s):  
Chris Barker ◽  
Alan Phear ◽  
François Côté ◽  
David Garcia Cueto
Keyword(s):  
Moisture Content ◽  
Optimum Moisture Content ◽  
Value Engineering ◽  
Eastern Canada ◽  
Crust Layer ◽  
Engineering Problems ◽  
Sensitive Clay ◽  
High Road ◽  
St Lawrence River

The Champlain Sea Basin in eastern Canada is known for its sensitive clay and associated engineering problems through this much-developed area along the St Lawrence River. Geologically, the surface of the Champlain clay has been subjected to desiccation, frost action, and weathering. This has resulted in the reduction of the water content and sensitivity of the surficial crust layer of this very wet clay deposit sufficiently to enable it to be used as an earthworks material. However, the material is still much wetter than its optimum moisture content. By co-operative value engineering, the team on the Nouvelle Autoroute 30 project in Montréal, Quebec, investigated and achieved moisture content and degree of compaction derogations to the Ministry of Transport, Quebec specification. This allowed the successful construction of many low and high road embankments using an unprecedented 2.3 × 106 m3 of this weathered Champlain clay crust material. This paper describes how the design and construction issues associated with using this material for earthworks were evaluated and addressed.

scholarly journals Economic implications of moisture content and logging system in forest harvest residue delivery for energy production: a case study

2017 ◽  
Vol 47 (4) ◽  
pp. 458-466 ◽  
Author(s):  
Francisca Belart ◽  
John Sessions ◽  
Ben Leshchinsky ◽  
Glen Murphy
Keyword(s):  
Moisture Content ◽  
Energy Content ◽  
Energy Output ◽  
Mixed Integer ◽  
Forest Harvest ◽  
Element Analysis ◽  
Economic Implications ◽  
Cable Logging ◽  
Harvest Residue

The need for improving the cost effectiveness of forest harvest residue utilization for bioenergy production has been widely recognized. A number of studies show that reducing residue moisture content presents advantages for transportation and energy content. However, previous research has not focused on the relative advantages of in-forest drying depending on the residue characteristics from different logging systems, comminution, and equipment mobilization. Residue drying curves were developed using finite element analysis for two primary Pacific Northwest logging systems. These curves were applied to a case study in Oregon in which mixed integer mathematical programming was used to optimize residue delivery to a hypothetical co-generation plant with a generating capacity of 6 megawatt-hours (MWh). Assuming that rear-steered trailers can access cable logging units, approximately 98% of the harvest residue generated by cable logging was delivered to the plant, compared with only 56% of residue generated with a ground-based system, mainly because collection costs incurred with ground-based system residues exceed cost benefits of drier material. By considering the energy content of drier residues, the amount of oven-dried metric tonnes (ODMT) needed to supply the plant can be reduced by 16% without affecting the energy output over a 24-month planning horizon. Lower ODMT demand and shifting to drier material decreases the overall production cost by 20.4%.

scholarly journals The Influences of Organic Mulches on Soil Moisture Content and Temperatures : A Case Study of Tapioca Wastes Application

2008 ◽  
Vol 14 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Komariah ◽  
Kengo Ito ◽  
Masateru Senge ◽  
John Tawiah Adomako ◽  
Afandi
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Moisture Content

scholarly journals A CASE STUDY ON BIOMASS BURNING IN VAIDOTAI SETTLEMENT / BIOMASĖS DEGINIMO TYRIMAI VAIDOTŲ KATILINĖJE

2013 ◽  
Vol 6 (4) ◽  
pp. 519-522
Author(s):  
Tomas Ališauskas ◽  
Gintas Viselga ◽  
Algirdas Jasinskas
Keyword(s):  
Moisture Content ◽  
Environmental Pollution ◽  
Experimental Research ◽  
Biomass Burning ◽  
Fossil Fuels ◽  
Graphical Form ◽  
Harmful Substances

The paper presents experimental research on the moisture of sawdust affected by the combustion of fossil fuels in the boiler with reference to studies on environmental pollution. The article has established the influence of the moisture content of sawdust on the amount of harmful substances found in the environment. The results of the undertaken analysis are provided in a graphical form. Santrauka Straipsnyje pateikti eksperimentiniai drėgnio įtakos, pjuvenas deginant kietojo kuro katile, aplinkos taršos tyrimai. Nustatyta pjuvenų drėgnio įtaka kenksmingų medžiagų išmetimų į aplinką kiekiui. Atlikta gautų rezultatų analizė, pateikta jų grafinė išraiška.

Sensitivity of microwave measurements to vegetation biomass and soil moisture content: a case study

1992 ◽  
Vol 30 (4) ◽  
pp. 750-756 ◽  
Author(s):  
P. Ferrazzoli ◽  
S. Paloscia ◽  
P. Pampaloni ◽  
G. Schiavon ◽  
D. Solimini ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Moisture Content ◽  
Microwave Measurements ◽  
Vegetation Biomass

scholarly journals Corrosion at low moisture content in both carbonated and chloride polluted concrete – Villa E-1027, a case study

2019 ◽  
Vol 289 ◽  
pp. 10007
Author(s):  
Elisabeth Marie-Victoire ◽  
Myriam Bouichou
Keyword(s):  
Reinforced Concrete ◽  
Moisture Content ◽  
Cultural Heritage ◽  
Environmental Conditions ◽  
Electrochemical Measurements ◽  
Corrosion Activity ◽  
Definition Of ◽  
Ancient Monuments ◽  
Non Destructive

Corrosion in reinforced concrete is generally attributed to either carbonation or chloride presence in the vicinity of the bars. But in the field of cultural heritage, especially for the most ancient monuments, it is not rare to encounter both carbonated and chloride polluted concrete, inducing heavy corrosion, as was the case in the Villa E-1027 in Roquebrune-Cap-Martin, on the French Mediterranean seashore. The villa was designed by Eileen Gray and Jean Badovici between 1926 and 1929. Due to aggressive environmental conditions and a period of dereliction, the concrete of the villa was quite heavily decayed and a deep restoration was led between 2000 and 2006. But after a little more than 10 years, and despite active maintenance, the villa is again facing corrosion induced decay. Prior to the definition of a new restoration protocol, to better evaluate the corrosion activity, in 2017 a permanent monitoring of moisture and temperature both in the air and in the concrete was installed. In the meantime, a series of instant electrochemical measurements was performed from 2017 to 2018. A first analysis of the results of the monitoring and the non-destructive tests clearly evidences that probably due to the conjunction of the carbonation of the concrete and external active chloride pollution, corrosion can happen at quite low moisture content.

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