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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Permeability of cellophane to liquids and vapours

Archer, William Lucas January 1950 (has links)
To interpret the permeability phenomena which are exhibited by cellulose, a knowledge of its structure and certain physical properties is essential. Although the present study is concerned with cellophane, which is a regenerated form of cellulose, it is preferable first to consider these aspects in native cellulose, and subsequently to describe the changes which occur as a result of regeneration.
2

Permeability of cellophane to liquids and vapours

Archer, William Lucas January 1950 (has links)
No description available.
3

A study of adhesion in the cellulose-starch-cellulose system

Janes, Raymond L. 01 January 1968 (has links)
No description available.
4

The role of surface chemistry in the bonding of a cellulose substrate treated in a corona discharge

Brown, Philip F. 01 January 1971 (has links)
No description available.
5

The role of surface chemistry in the bonding of a cellulose substrate treated in a corona discharge

Brown, Philip F., January 1971 (has links) (PDF)
Thesis (Ph. D.)--Institute of Paper Chemistry, 1971. / Includes bibliographical references (p. 86-91).
6

The cellophane industry in Canada and its relations to allied and inter-related industries.

McIntyre, George Douglas January 1932 (has links)
No description available.
7

A study of adhesion in the cellulose-starch-cellulose system

Janes, Raymond L., January 1968 (has links) (PDF)
Thesis (Ph. D.)--Institute of Paper Chemistry, 1968. / Includes bibliographical references (p. 161-168).
8

The Characterization of Non-Ionic Surfactant Vesicles: A Release Rate Study for Drug Delivery

Dearborn, Kristina Ok-Hee 07 April 2006 (has links)
Drug delivery methods for the treatment of brain tumor cells have been both inefficient and potentially dangerous for cancer patients. Drug delivery must be done in a controlled manner so that the effective amount of medication is delivered to the patient and ensure over-dosage does not cause adverse side reactions in the patient. The focus of this investigation is to design a drug delivery system that would allow for site-specific administration of the drug, protection of the drug from the surrounding environment, and controlled sustained release of the drug. We have proposed a model that incorporates a niosome, which is a non-ionic surfactant vesicle, within a biodegradable polymer hydrogel. The drug is encapsulated in the niosome, and the niosome is embedded within a three-dimensional hydrogel network. It is therefore critical that the release rate of the drug from the niosome be studied. This investigation provides information about the release rate and behavior of the drug within the niosome as it is placed in a semi-permeable membrane. The niosome and dye solution in the cellulose membrane are placed in contact with water or PBS. Intensity measurements are taken using fluorescence spectrometry, and the readings are converted to concentration and moles values. The release rates of the dye from of the niosome and across the membrane are studied as the concentration data is collected over time. The results indicate that most of the niosomes will release their dye within ten hours. The water will create instability in the niosomes, while the PBS solution will maintain the stability of the niosomes. The concentration that diffuses across the cellulose membrane will steadily increase and can be predicted well by a simple diffusion model. We hope to use the information provided in this study to continue to design a drug delivery method that will stabilize the niosomes and allow for the maximum control over the release rate of the drug.
9

Růst Mycobacterium smegmatis na agarovém médiu a agarovém médiu pokrytém celofánovou folií - morfologická a proteomová studie / Růst Mycobacterium smegmatis na agarovém médiu a agarovém médiu pokrytém celofánovou folií - morfologická a proteomová studie

Ramaniuk, Volha January 2012 (has links)
Biofilm formation is one of the most common bacterial survival strategies. Majority of bacterial species are able to form these three-dimensional structures, including pathogens like Mycobacterium tuberculosis. Representatives of Mycobacterium genus widely occur in the nature, although they can cause serious problems when they appear in medical equipment and artificial replacements of the human body. Non-pathogenic Mycobacterium smegmatis mc2 155 was used as a model organism in our experiments. We investigated morphology of the three- and six-day-old colonies (in fact biofilms) on agar and agar covered with cellophane using Stereo microscope and Scanning Electron Microscope. We found that a type of surface as well as a carbon source has a great influence on the morphology of the M. smegmatis colonies. We isolated proteomes from the agar and cellophane cultures and from planktonic culture. Two-dimensional electrophoresis was used as the main proteomic method. Proteomic data were analyzed using PDQuest software. Then the sets of proteins detected by qualitative and quantitative analyses were compared using Venn diagrams. As a result, we recognized 7 unique proteins that might be specific for recognition and adhesion of bacteria to the cellophane, no unique protein in agar proteome and 46 unique...
10

Development of Resistor-based Silver and Zinc Devices using Novel Applications of Inkjet Printing

Radwan, Abdulaziz (Aziz) N. 27 January 2023 (has links)
No description available.

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