Super critical fluid dyeing

... means dyeing with CO2 Different between conventional & supercritical CO2 dyeing Supercritical Fluid Properties A supercritical fluid is any substance at a temperature and pressure above its critical ... Super- critical Dyeing and Treatment Supercritical dyeing using supercritical CO2, the ideal dyeing technology that uses no water at all No wastewater, environmentally frie...

Ngày tải lên: 06/08/2015, 13:08

... Slide Risk-driven specification    Critical systems specification should be riskdriven This approach has been widely used in safety and security -critical systems The aim of the specification process ...   Identify the risks faced by the critical system In safety -critical systems, the risks are the hazards that can lead to accidents In security -critical systems, the...

Ngày tải lên: 14/09/2012, 11:26

... Critical Systems  Safety -critical systems • •  Mission -critical systems • •  Failure results in loss of life, injury or damage ... Engineering, 7th edition Chapter Slide 32 Safety criticality  Primary safety -critical systems •  Secondary safety -critical systems •  Embedded software systems whose failure can cause the associated ... threaten people Systems whose f...

Ngày tải lên: 14/09/2012, 11:26

... Chapter 20 Slide Diversity and redundancy examples   Redundancy Where availability is critical (e.g in e-commerce systems) , companies normally keep backup servers and switch to these automatically ... Software Engineering, 7th edition Chapter 20 Slide 27 Fault tolerance     In critical situations, software systems must be fault tolerant Fault tolerance is required where there ar...

Ngày tải lên: 14/09/2012, 11:27

... Validation of critical systems  The verification and validation costs for critical systems involves additional validation processes and analysis than for non -critical systems: • • ... Chapter 24 Slide Validation costs   Because of the additional activities involved, the validation costs for critical systems are usually significantly higher than for noncritical sys...

Ngày tải lên: 14/09/2012, 11:41

Ngày tải lên: 21/09/2012, 11:00

Ngày tải lên: 05/10/2012, 09:58

Ngày tải lên: 05/10/2012, 09:58

Ngày tải lên: 13/10/2012, 17:11

... beginning of fluid mechanics Fig 1.3 Ancient Greek ship depicted on old vase inclination or supply pressure had to be adjusted to overcome friction with the wall of the conduit This gave rise to much ... was the first to find the least resistive ‘streamline’ shape 4 History of fluid mechanics Leonardo da Vinci (145 2-1 519 ) An all-round genius born in Italy His unceasing z...

Ngày tải lên: 22/10/2012, 10:59

... Kinematic viscosity B Y units 0 1 0 0 m kg -3 -1 1 1 -1 -1 -2 -2 -2 -2 -1 -1 S mls m/s2 kg I m3 N = kg m/s2 Pa = N/m2 J Pa s m2/s Characteristics of a fluid 2.2.2 Dimension All physical quantities ... proportional to the velocity gradient duldy Such fluids are called Newtonian fluids On the other hand, liquid which is not subject to Newton's law of viscosit...

Ngày tải lên: 22/10/2012, 10:59