Sökning: "cardboard"

Visar resultat 6 - 10 av 10 avhandlingar innehållade ordet cardboard.

1. 6. Study of Paper Dry Strength Additives on Cellulose Fibres

   Författare :Mengxiao Zhao; Torbjörn Pettersson; Lars Wågberg; Leif Robertsén; Tekla Tammelin; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paper dry strength additives; adsorption of polymer; polyelectrolyte; birch fibres; model cellulose surface; cellulose beads; filaments; light-weight paper board; polyacrylamide; cationic starch; Torrstyrkekemikalier; polymeradsorption; polyelektrolyter; cellulosafibrer; modellcellulosaytor; cellulosakulor; lättviktsliner; polyakrylamid; katjonstärkelse; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Paper packaging is commonly found in the form of paper and cardboard boxes, but recently paper packing is being used in food packaging, trays, beverage packaging and even paper straws, among others. Paper strength additives have been developed to increase the efficiency of the joint strength and the joint areas and potentially maintain bulk in paper products. LÄS MER

3. 7. Assessment of visual contrast function and effects of citicoline treatment in children with visual impairment

   Författare :Aamir Siddiqui; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Purpose: The present studies address the questions if visual dysfunction in severely visually impaired children can be measured with contrast tests high or low, how it relates to their visual abilities assessed with behavioural methods and if visual function in these children can be improved by neuro-pharmacological treatment. Methods: Twenty children aged 6-16 years from the Al-Maktoom school for visually impaired children in Islamabad, Pakistan were included in the first study and 22 children aged 6-14 years in the second study. LÄS MER

4. 8. Household salt as an emergency radiation dosemeter for retrospective dose assessments using optically stimulated luminescence

   Författare :Maria Christiansson; Malmö Medicinsk strålningsfysik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Optically stimulated luminescence OSL ; household salt; NaCl; retrospective dosimetry; accident dosimetry;

   Sammanfattning : In the event of a radiation accident, it is crucial to make rapid estimates of the absorbed dose received by both emergency workers, so-called first responders, and members of the public. Today, only personnel in rescue teams responding to nuclear emergencies have access to individual dosemeters. LÄS MER

5. 9. A System Perspective on District Heating and Waste Incineration

   Författare :Kristina Holmgren; Björn Karlsson; Anna Björklund; Linköpings universitet; []
   Nyckelord :Energy recovery; District heating; Waste incineration; Waste management; Environmental; Material recovery; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Energy recovery by waste incineration has a double function as waste treatment method and supplier of electricity and/or heat, thereby linking the systems of energy and waste management. Both systems are undergoing great changes, mainly due to new regulations. LÄS MER

7. 10. High strength paper from high yield pulps by means of hot-pressing

   Författare :Tove Joelsson; Per Engstrand; Gunilla Pettersson; Anna Svedberg; Samuel Schabel; Mittuniversitetet; []
   Nyckelord :high yield pulp; hot-pressing; lignin; paper properties; wet strength;

   Sammanfattning : AbstractHigh Yield Pulp (HYP), i.e. TMP, SGW or CTMP, is normally used in printing papers (News, SC and LWC) or in a middle layer on cardboard i.e. LÄS MER