Sheffield smoothness

Stiffness (37), folding endurance (38), Sheffield smoothness (39), porosity (40), and internal tearing resistance (41) were determined by appropriate TAPPI methods. 

Figure 3. Sheffield smoothness vs. number of Taber abrasion cycles required to produce 20% image loss. (Reproduced, with permission, from Ref. 2. Copyright...

SAMPLE l FILLER RATIO FELT TO WIRE SHEFFIELD SMOOTHNESS SHEFFIELD POROSITY... 

Intramolecular alkylation, although it is enticing, has not been developed as a method for cyclohexanone construction. Joseph P.A. Harrity of the University of Sheffield reports (J. Org. Chem. 68 4392, 2003) that TiCl smoothly transforms the enol ether 10, prepared from the corresponding alkynyl phosphonium salt, into the 2-aryl cyclohexanone 11. Alkynyl ethers such as 10 are readily prepared in enantiomerically-enriched form. Would the enantiomeric excess be maintained on cyclization ... 

TAPPI Useful Method UM 518 Smoothness of Paper (Sheffield). 

Burst strength, kPa Burst index, kPa.m /g Tear resistance, mN Tear index, mN.m /g Smoothness, Sheffield units Fiber length, Kajaani, mm... 

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