If M is a closed Nil geometry 3-manifold then π 1 (M) is almost convex with respect to a fairly simple " geometric " generating set. If G is a central extension or a Z extension of a word hyperbolic group, then G is also almost convex with respect to some generating set. Combining these with previously known results shows that if M is a closed 3-manifold with one of Thurston's eight geometries,...

Pricing schemes for Internet services have turned out to be of crucial influence for the competitiveness of Internet Service Providers (ISP). Despite of this urgent demand, there is still no standard tariff scheme that solves the so-called “feasibility problem”, i.e. ensures simultaneously technical feasibility, economic efficiency and user acceptance. This paper investigates the reason for the...

.Name of patient Mali 0, age 30, sex female, caste or class Burmese, occupation bazaar seller, result cured, date of admission 23rd September, 1913, date of discharge 6th November, 1913. History.?Married for 15 years, number of pregnancies, nil; number of children nil; number ot miscarriages, nil; date of last confinement, nil ; date of last miscarriage, nil; date of last menstruation, three da...

The Yellow River Wetland National Nature Reserve (the Sanmenxia section) is an important area of the Yellow River for two important hydrologic gauging stations: the Sanmenxia reservoir and the Xiaolangdi reservoir. Seven sites along the section were selected: Jiziling, Dinghuwan, Houdi, Canglonghu, Shangcun, Wangguan, and Nancun. After the microwave digestion with aqua regia, concentrations of ...

BACKGROUND We examined the implications of iNOS in atherosclerosis progression using the selective inducible NO synthase (iNOS) inhibitor N:-iminoethyl-L-lysine (L-NIL) in hypercholesterolemic rabbits. METHODS AND RESULTS Nine rabbits were fed a 0.3% cholesterol diet for 24 weeks (Baseline group); 25 animals were maintained on the diet and treated for 12 extra weeks with L-NIL (5 mg x kg(-1) ...

Near-infrared light (NIL) promotes a wide range of biological effects including enhancement of energy production, gene expression and prevention of cell death. This is the first report of the in vivo neuroprotective effects of NIL against optic neuropathy induced by mitochondrial complex I inhibition. Subjects were pigmented rats that received single bilateral intravitreal doses of rotenone, a ...