Gypsum mixtures for compensator construction
نویسندگان
چکیده
منابع مشابه
Road and Bridge Construction across Gypsum Karst in England
Gypsum karst problems in the Permian and Triassic sequences of England have caused difficult conditions for bridge and road construction. In Northern England, the Ripon Bypass crosses Permian strata affected by active gypsum karst and severe subsidence problems. Here, the initial borehole site investigation for the road was supplemented by resistivity tomography studies. The roadway was reinfor...
متن کاملStudy on Preparation of High-strength Gypsum by FGD Gypsum
With the enlarging of industrial desulfurization, the amount of FGD gypsum is increasing rapidly. The preparation of alpha-calcium sulfate hemihydrate (α-HH) is one of the biggest concerns for FGD gypsum reclamation. The influence of mixed chlorate solution of Mg-Ca-Na concentrations (5-30 wt%) and FGD gypsum concentrations(5-30 wt%) by hydrothermal salt solution method at atmospheric were inve...
متن کاملNew Flexible Models and Design Construction Algorithms for Mixtures and Binary Dependent Variables New Flexible Models and Design Construction Algorithms for Mixtures and Binary Dependent Variables
Nieuwe flexibele modellen en algoritmen voor het ontwerp van experimenten voor mengsels en binaire afhankelijke variabelen Thesis to obtain the degree of Doctor from the Erasmus University Rotterdam by command of the rector magnificus and in accordance with the decision of the Doctorate Board. Acknowledgments I would like to express my sincere gratitude to my doctoral promotors Professor Dennis...
متن کاملInfluence of Compensator Thickness and Field Size on Buildup factor of a Brass Compensator for Intensity- Modulated Radiation Therapy
Introduction: Radiotherapy is one of the effective methods in the treatment of cancer. In the recent methods of radiotherapy, intensity modulated radiotherapy (IMRT) technique by compensators is used. when photon beam passes the compensator, scattered photons can be generated within the compensator. The presence of scattered photons may complicate the design of compensators as...
متن کاملCarbonate and Gypsum
Inorganic carbonate in soil occurs predominantly as the sparingly soluble alkaline-earth carbonates, calcite (CaCOs) and dolomite (CaMg(CO,),). Calcite is usually the dominant form in active pedogenic environments (Doner & Lynn, 1977; Nelson, 1982). There are only a few reported occurrences of aragonite (CaCOs) and vaterite (CaCOs) in soils. Sodium carbonate and magnesium carbonate and hydroxyc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Medical Physics
سال: 1988
ISSN: 0094-2405
DOI: 10.1118/1.596240