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New requirements for surgical gowns as protective clothing for the medical staf...

The transference of pathogens through body fluids between surgeon team and patient is a frequent cause of infection. The use of protective surgical apparel is essential to create a barrier to microbial transfer. Surgical gowns are protective clothing with a double effect: protection of the clinical staff and protection of the patient. In the market there are two types of surgical protection materials: disposabl...

Functionalisation of textiles : future perspectives

Multifunctional effects are essential for producing higher value added textiles, important not only for new technical applications but also for more “traditional” uses such as clothing and home textiles with high product differentiation. Within the “European Technology Platform for the Future of Textiles and Clothing”, functional textiles are a clear priority. Surface modification by means of finishing is very ...

Ab initio modeling of defects in silicon, germanium and SiGe alloys

Understanding the most elemental defects in semiconductors is a fundamental step to grasp the countless solid-state reactions that may occur during crystal growth, device processing and operation stages. The higher carrier mobilitity in SiGe alloys and germanium, when compared with silicon, and the necessity to a higher K dielectric than SiO2 makes these semiconductors the most contendors to a new generation of...

Frutos da formação PLEE

Apresentação no Seminário "Experiências de aprendizagem por projecto na UM”. Campus de Azurém, Guimarães, 16 Fevereiro 2004, pelo GIPEEP - Grupo Interdisciplinar de Promoção do Ensino de Engenharia por Projectos. ; Esta comunicação baseia-se num projecto apresentado, no âmbito dos objectivos expressos na Circular RT-23/2003, por um Grupo Interdisciplinar de Promoção do Ensino de Engenharia por Projectos (GIPEE...

The role of Trichoderma reesei cellulases in cotton finishing

Knitted and woven cotton fabrics were treated with a mono component Trichoderma reesei endoglucanase (EGII) and with experimental Trichoderma cellulase mixtures containing different cellulase profiles. The cellulase action was evaluated by measuring weight loss, pilling, and bursting strength. Of the experimental mixtures, Cellulase F, being an EGII-enriched preparation, was the best mixture to obtain the highe...

Hydrolysis of cotton cellulose by engineered cellulases from Trichoderma reesei

Indigo backstaining during cellulase washing

Kinetic parameters measured during cellulase processing of cotton

Kinetic parameters were measured during cellulase treatment of cottton. A recent approach was used instead of the classical Michaelis-menten equation to calculate kinetic constants relating the initial reaction rate with the enzyme concentration. The calculated parameters are discussed for two commercial cellulases with both low and hogh levels of mechanical action. Further Comparisions are also made on scoure...

The treatment of cotton cellulose with trichoderma reesei engineered cellulases

Effects of agitation and endoglucanase pretreatment on the hydrolysis of cotton...

We have attempted to clarify the effects of low and high levels of mechanical agitation on the cellulolytic activity of a pure endoglucanase (EG) and a total cellulase mixture (TC) on scoured and bleached cotton fabric, along with the effect of EG pretreatment on subsequent treatments with TC. Methods used to follow the progress of fabric treatments include weight loss, breaking load loss, bending hysteresis, a...