This document contains 10 photos from Flickr shared under various Creative Commons licenses. The photos cover a range of subjects and were uploaded by different photographers for non-commercial reuse via Creative Commons licenses.
This document contains 10 photos from Flickr shared under various Creative Commons licenses. The photos cover a range of subjects and were uploaded by different photographers for non-commercial reuse via Creative Commons licenses.
1) The document describes improvements to hinges for cardboard boxes that allow the lid to be held open at a desired angle when opened.
2) Specifically, it involves a strip of paper or other rigid material secured to the lid and slidable with respect to the box body, with friction between the strip and box body holding the lid open.
3) The hinge replaces the usual inside hinge and avoids the need for tapes to hold the lid open, allowing adjustable display of items inside the box.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already suffer from conditions like anxiety and depression.
Este documento describe los principales instrumentos para cubrir los riesgos políticos y comerciales en el comercio internacional, como la clasificación de riesgo-país y los seguros de crédito a la exportación. Explica que los seguros de crédito cubren los riesgos políticos como guerras o cambios de gobierno, y los riesgos comerciales como la insolvencia del comprador. También analiza las agencias que evalúan el riesgo-país de diferentes naciones.
Buildings respond differently to earthquakes based on their mass, stiffness, natural period, and proximity to other structures. Taller buildings have longer natural periods than shorter buildings, so they are more affected by ground motions matching their natural frequency. Building damage depends on factors like shape, materials, height, connections, and whether the earthquake shaking matches the building's natural period. Retrofitting techniques like base isolation help buildings withstand quakes by reducing transmitted ground accelerations.
1) The document describes improvements to hinges for cardboard boxes that allow the lid to be held open at a desired angle when opened.
2) Specifically, it involves a strip of paper or other rigid material secured to the lid and slidable with respect to the box body, with friction between the strip and box body holding the lid open.
3) The hinge replaces the usual inside hinge and avoids the need for tapes to hold the lid open, allowing adjustable display of items inside the box.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already suffer from conditions like anxiety and depression.
Este documento describe los principales instrumentos para cubrir los riesgos políticos y comerciales en el comercio internacional, como la clasificación de riesgo-país y los seguros de crédito a la exportación. Explica que los seguros de crédito cubren los riesgos políticos como guerras o cambios de gobierno, y los riesgos comerciales como la insolvencia del comprador. También analiza las agencias que evalúan el riesgo-país de diferentes naciones.
Buildings respond differently to earthquakes based on their mass, stiffness, natural period, and proximity to other structures. Taller buildings have longer natural periods than shorter buildings, so they are more affected by ground motions matching their natural frequency. Building damage depends on factors like shape, materials, height, connections, and whether the earthquake shaking matches the building's natural period. Retrofitting techniques like base isolation help buildings withstand quakes by reducing transmitted ground accelerations.
