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Autism and the inclusion mandate: what happens when children with severe disabilities like autism are taught in regular classrooms? Daniel knows.
Education Next
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January 1, 2004|
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COPYRIGHT 2004 Hoover Institution Press. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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Daniel walks into his kindergarten classroom and drops his outerwear, backpack, and bus harness in a tangled heap in the middle of the floor. Daniel has a singular focus this morning: building a bridge and a house out of Lincoln Logs.
He does not notice as classmates step around or over him as he plays on the hard floor. If other children move into his space, he pushes them away. One or two children greet him, but he does not answer. Daniel keeps up a running dialogue as he plays, in jargon rarely understandable to anyone but himself.
Daniel's educational ...
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Leaching kinetics and mechanisms of surface reactions during cyanidation of gold in the presence of pyrite or stibnite
Magazine article from: Minerals & Metallurgical Processing
; ...effects of pyrite and stibnite on gold leaching kinetics. Means to reduce the effect...ppm, significantly affected the gold leaching kinetics through forming a passivating...gold. Key words: Cyanidation, Gold leaching, Leaching kinetics, Pyrite, Stibnite...
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Leaching results of reactive materials.
Magazine article from: Construction and Building Materials
; Abstract Leaching results are used in the assessment of...steelmaking slags has a direct influence on the leaching of all elements enclosed in the matrix...diffusion or dissolution was the controlling leaching mechanisms for each slag type. Both...
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Vat leaching: An overlooked process
Magazine article from: Engineering and Mining Journal
; ...sandleaching to recover precious metals. VAT LEACHING The words "vat leaching" are hardly in metallurgists' vocabulary these days, This was not the case in 1888, when cyanide leaching for gold exploded on the scene. In the ensuing...
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Investigation on the leaching of pyrite in a germ-free system
Magazine article from: Minerals & Metallurgical Processing
; ...Abstract This paper reports on research on leaching pyrite in a germ-free system. The...and various oxidation agents on pyrite leaching were studied. The results indicated...mineral particle size leads to a higher leaching rate of pyrite. The optimum results...
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Principles for managing nitrogen leaching.
Magazine article from: Journal of Soil and Water Conservation
; Controlling nitrogen (N) leaching presents a major challenge for nutrient...of individual fields. However, leaching is only one of several outputs from...of N that is highly susceptible to leaching. However, if the soil is saturated...
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Phosphorus and potassium leaching under contrasting residential landscape models established on a sandy soil.(Turfgrass Science)
Magazine article from: Crop Science
; ...conditions can be conducive to rapid leaching of applied fertilizer nutrients (e...al., 1999; Sinaj et al., 2002). Leaching of applied fertilizer elements poses...Florida are relatively favorable for leaching of applied fertilizers, landscape vegetation...
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The potential for leaching of agrichemicals used in crop production: a national perspective.
Magazine article from: Journal of Soil and Water Conservation
; ...Monitoring data also indicate that leaching of chemicals into the ground water...study and program implementation, leaching vulnerability indexes for pesticides...nitrates were developed. Estimating leaching potential nationally The natural...
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Leaching of CCA from lumber exposed to natural rain aboveground.
Magazine article from: Forest Products Journal
; ...continuously monitored chromated copper arsenate (CCA) leaching from aboveground, naturally exposed 38-mm by...treatments, were evaluated for their effects on leaching rates. Component leaching ranged from 7.3 to 20.5 [micro]g/[cm...
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Medium-temperature pressure leaching of copper concentrates - Part I: Chemistry and initial process development
Magazine article from: Minerals & Metallurgical Processing
; ...temperature (150 to 165C) pressure leaching processes. Specific configurations of...chemistry of medium-temperature pressure leaching of copper concentrates and reports on...development of medium-temperature pressure leaching and direct electrowinning technology...
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Production of tungsten via leaching of scheelite with sulfuric acid
Magazine article from: Minerals & Metallurgical Processing
; Abstract A new process for leaching scheelite ore consists of leaching low- and high-grade concentrates with H^sub 2...945;-W. Key words: Tungsten, Scheelite, Leaching Introduction There are four commercially used tungsten...
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