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Filtering by: Date issued sim 1983-08-29 Degree Level Master's

Ultrafiltration of grape juice by hollow fiber membranes

Creator:

Garcia-Quintero, Zeferino Heberto

Abstract:

The feasibility of using hollow fiber ultrafi1tration for clarification, stabilization and preservation of white grape juice was evaluated. Flux and process parameters of a hollow fiber membrane ultrafi1tration unit (Romicon pilot scale, model FXS-MXII), were studied using white Riesling grape juice. Optimum processing conditions were determined for different nominal membrane...

Resource Type:

Masters Thesis
Interaction between hazelnut (Corylus avellana L.) shoot development and big bud mite (Phytoptus avellanae Nal. and Cecidophyopsis vermiformis Nal.)

Creator:

Burgess, Jean E.

Abstract:

The influence of environmental and genetic variation in plant morphology and development on eriophyoid bud mite (Phytoptus avellanae Nal. and Cecidophyopsis vermiformis Nal.) behavior, survival and colonization on Corylus avellana L. was studied. The distribution pattern of galled buds was consistent with the observation that mites colonize only those buds...

Resource Type:

Masters Thesis
The effect of light intensity on Douglas-fir foliage quality : survival and development of Western spruce budworm

Creator:

Waddell, Karen L.

Abstract:

Foliage from Douglas-fir(var. glauca) seedlings grown under two light intensities was bioassayed to examine palatability to the western spruce budworm (Choristoneura occidentalis Free.). Samples were collected in Fall, Winter and early Spring to identify seasonal changes in host foliage, as evidenced by the response of spruce budworms. Fall collected foliage...

Resource Type:

Masters Thesis