搜索结果: 16-30 共查到“Acidity”相关记录47条 . 查询时间(0.017 秒)
Development of Pt/WO3-ZrO2-Al2O3 Catalyst for Isomerization of Normal Heptane (Part 1) Control of Catalyst Acidity to Improve Isomerization Selectivity
Isomerization Normal heptane Solid super acid Research octane number
2009/7/28
The skeletal isomerization of paraffins is effective in improving the gasoline octane number, and platinum catalyst supported on sulfated zirconia (SZ) has been practically used for light naphtha iso...
Sensibility of two hairy vetch (Vicia villosa Roth.) genotypes to soil acidity
Vicia villosa sensibility pH substrates germination rate toleration
2010/1/19
Vetches are grown for pastures and mixtures with grain for forage. Hairy vetch is a
legume primarily used for soil improvement and bank stabilization, is well adapted to organic
cultivation and gr...
Analysis of the impacts of major anion variations on surface water acidity particularly with regard to conifer harvesting：case studies from Wales and Northern England
surface water acidity Wales Northern England
2009/6/5
Data on the water quality of streams draining a range of acidic and acid sensitive, mainly afforested, upland catchments in mid- and north-Wales and northern-England are described to investigate the a...
Critical loads of sulphur and nitrogen for freshwaters in Great Britain and assessment of deposition reduction requirements with the First-order Acidity Balance (FAB) model
critical loads acidification nitrate FAB model
2009/3/24
The critical loads approach is widely used within Europe to assess the impacts of acid deposition on terrestrial and freshwater ecosystems.
Reduction in Acidity by Chemical and Microbiological Methods and Their Effect on Moslavac Wine Quality
malolactic fermentation chemical deacidification acidic compositions
2009/3/19
Changes in chemical composition and sensory properties caused by chemical and microbiological methods of deacidification in Moslavac (syn. Furmint) wines were investigated. Alcoholic fermentation of M...
Present and potential nitrogen outputs from Norwegian soft water lakes – an assessment made by applying the steady-state First-order Acidity Balance (FAB) model
Lakes hydrochemistry nitrogen nitrate sinks
2009/3/17
The steady-state First-order Acidity Balance (FAB) model for calculating critical loads of sulphur (S) and nitrogen (N) is applied to 609 Norwegian soft-water lakes to assess the future nitrate (NO3&#...
The effects of riparian forestry on invertebrate drift and brown trout in upland streams of contrasting acidity
brown trout land-use acidification drift forestry streams
2009/3/5
Variations in macroinvertebrate drift and benthic invertebrate abundance were assessed in 30 upland Welsh streams of varying acidity (pH < 5.7 or pH.> 6.0) and riparian land-use (conifer, moorland or ...
Influence of Saccharomyces uvarum on Volatile Acidity, Aromatic and Sensory Profile of Malvasia delle Lipari Wine
Malvasia delle Lipari DOC wine Saccharomyces uvarum volatile acidity
2009/3/5
The present study investigated chemical and sensory properties of Malvasia delle Lipari DOC (Denomination of Controlled Origin) wine fermented with a cryotolerant strain of Saccharomyces uvarum, chara...
Effects of five years of frequent N additions, with or without acidity, on the growth and below-ground dynamics of a young Sitka spruce stand growing on an acid peat: implications for sustainability
acid canopy application nitrogen acid organic soil soil water young Sitka spruce
2009/3/5
A field manipulation study was established to demonstrate effects of simulated wet N and S deposition on a young (planted 1986) stand of Sitka spruce growing on a predominantly organic soil in an area...
The development of an approach to assess critical loads of acidity for woodland habitats in Great Britain
critical loads acid deposition acidification woodland simple mass balance model sustainability
2009/3/5
Alongside other countries that are signatories to the UNECE Convention Long Range Transboundary on Air Pollution, the UK is committed to reducing the impact of air pollution on the environment. To adv...
The influence of organic compounds on the development of precipitation acidity in maritime clouds
organic compounds precipitation acidity maritime clouds
2009/3/2
In order to estimate the anthropogenic influence of gas and aerosol emissions from the Petroleum Industry in maritime zones with clouds of small vertical extent, a numerical 1-D Eulerian cloud-chemica...
Influence of land uses on soil acidity parameters in a typical laterite terrain from Kerala
Exchangeable acidity extractable acidity laterite ApH
2009/2/20
Cassava (Manihot esculenta Crantz) and rubber (Hevea brasilienis Muell. Arg.) form the major land uses along the midland region of Kerala where laterite soils predominate. .Thisstudy was conduct...
Soil acidity parameters of laterite soils under rubber
Acidity base saturation exchangeable cations laterite rubber
2009/2/20
A study was conducted to understand the soil acidity parameters of three selected laterite soils under rubber in Kerala. Pedons were dug to a depth of 2 m at three selected locations viz. Thiruvan...
Type of Archwire and Level of Acidity: Effects on the Release of Metal Ions from Orthodontic Appliances
Metal ions Orthodontic appliances Level of acidity
2010/3/5
Objective: To examine the effects of three different parameters—pH value, type of archwire, and length of immersion—on release of metal ions from orthodontic appliances.
Materials and Methods: Simu...
The corrosion of metals in contact with wood, discoloration of wood itself, undesirable effects on wood preservatives and the curing of the synthetic resins especially glues in fiberboards, particleb...