نتایج جستجو برای: lime based flux

تعداد نتایج: 3009659  

2004
D G MCARTHUR

It has been suggested that raising soil pH through liming could reduce the impact of whitegrub on crop yield in the treated soil. To test this hypothesis, whitegrub incidence was monitored in a trial designed to examine the effects of various lime treatments on crop yields of varieties N16 and N12. Lime was applied at two rates (5 and 10 t/ha) and in combination with gypsum at 5 t/ha each. Resu...

2009
B. BARKER

Liming of diffusers with milk of lime is warranted from a corrosion point of view. It can however cause both physical and chemical problems. The use of calcium saccharate, prepared from lime and mixed juice, as an alternative to milk of lime is suggested and the results from preliminary tests are discussed. The main objective is to investigate whether calcium saccharate could overcome some of t...

2016
Jürgen FRICK Manuela REICHERT Frank LEHMANN Michael STEGMAIER Katja HERTER

The majority of the building-stock from before 1900 has been erected with natural hydraulic lime-based mortars in massive masonry. Due to the low modulus of elasticity of lime-based mortars there has never been a need for dilation joints in old masonry structures. Changes in shape as a result of expansion and contraction, due to hot/cold cycles, could be “followed” by these masonry structures w...

2012
Denton S. EBEL Michael K. WEISBERG John R. BECKETT

Low-iron, manganese-enriched (LIME) olivine grains are found in cometary samples returned by the Stardust mission from comet 81P ⁄Wild 2. Similar grains are found in primitive meteoritic clasts and unequilibrated meteorite matrix. LIME olivine is thermodynamically stable in a vapor of solar composition at high temperature at total pressures of a millibar to a microbar, but enrichment of solar c...

2014
Zhiquan Zhang Yufen Zhang

In order to study the application of lime-fly ash loess in permafrost subgrade engineering, uniaxial compressive test, fast direct shearing test and permeability tests were carried out on lime-fly ash loess under different curing ages and freeze-thaw cycles. Uniaxial compressive strength of lime-fly ash loess increases slowly with the curing ages, and can reach 3.5 Mpa after the curing ages of ...

2013

Different dosages of a commercialized potato starch were added to aerial lime-based mortars in order to check its efficiency as a rheological modifier. Several fresh state properties of the mortars were studied: consistency, density, air content, water retention capacity, setting time and evolution when applied on support. The effect of the starch on -potential of the lime particle surface as ...

Journal: :British journal of anaesthesia 1982
W K Grodin R A Epstein

If the anaesthetic circle system is arranged to increase the humidity of fresh anaesthetic gases by placing the carbon dioxide absorbent canister between the fresh gas inlet and the patient, drying of the soda-lime can occur. Very dry soda-lime adsorbs significant quantities of halothane. Using fresh soda-lime, effluent halothane concentration reached 50% of the input concentration in 35s, but ...

Journal: :Journal of environmental quality 2012
Teija Kirkkala Anne-Mari Ventelä Marjo Tarvainen

The River Yläneenjoki catchment in southwest Finland is an area with a high agricultural nutrient load. We report here on the nutrient removal performance of three on-site lime-sand filters (F1, F2, and F3), established within or on the edge of the buffer zones. The filters contain burnt lime (CaO) or spent lime [CaO, Ca(OH), and CaCO]. Easily soluble lime results in a high pH level (>11) and l...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
a. r. goodarzi sh. goodarzi h. r. akbari

expansive soils may cause disaster if not adequately taken care of. lime continues to be commonly used for modification of these types of soils although it may have limited success in some applications. thus, the present study was performed to address the viability of using silica fume (sf) as industrial waste to modify the behavior of expansive soils. this achieves the double objectives of ove...

2007
A. W. Miller P. L. Sibrell T. R. Wildeman Philip L. Sibrell Thomas R. Wildeman

The U.S. Geological Survey, in cooperation with the Colorado School of Mines and the U.S. Environmental Protection Agency, has demonstrated the application of pulsed limestone bed (PLB) treatment of acid mine drainage (AMD) at the Argo tunnel discharge near Idaho Springs, Colorado. Current technology for AMD treatment at the Argo facility is neutralization with lime. However, lime neutralizatio...

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