N4,N4′-Bis(4-methoxybenzylidene)-3,3′-dimethylbenzidine

No Significant Risk Level (nsrls) for the Proposition 65 Carcinogens 3,3'-dimethylbenzidine and 3,3'-dimethylbenzidine Dihydrochloride

The cancer potencies of 3,3'-dimethylbenzidine (commonly called o-tolidine) and 3,3'dimethylbenzidine dihydrochloride were estimated from dose-response data for multiple treatment-responding tumor sites among male rats exposed orally to 3,3'-dimethylbenzidine dihydrochloride via drinking water (NTP, 1991). These sites included liver, lung, preputial gland, oral cavity, skin, small intestines, l...

(Z)-2-(3-methoxybenzylidene)-1-azabicyclo[2.2.2]octan-3-one.

The crystal structure of the title compound, C(15)H(17)NO(2), contains two nearly identical but crystallographically independent molecules, each with a double bond connecting an azabicyclic ring system to a 3-methoxybenzylidene moiety. The space group is triclinic P-1. The benzene ring is twisted by 18.44 (5) and 22.35 (4) degrees with respect to the plane of the double bond connected to the az...

Opto-optical modulation in N-(p-methoxybenzylidene)-p-butylaniline.

A method of opto-optical modulation in liquid crystals is reported. An Ar(+) laser beam is employed to modulate a second He-Ne laser. The highest frequency achieved was 1.5 x 10(3) pulses per second with input modulating powers smaller than 10 mW. A homeotropic N-(p-methoxybenzylidene)-p-butylaniline liquid-crystal cell was employed as the nonlinear medium.

GPA 33 ( glycoprotein A 33 ( transmembrane ) )

33 Visibility

In a geometric context, two objects are “visible” to each other if there is a line segment connecting them that does not cross any obstacles. Over 500 papers have been published on aspects of visibility in computational geometry in the last 40 years. The research can be broadly classified as primarily focused on combinatorial issues, or primarily focused on algorithms. We partition the combinat...