The effects of oligomycin on Na+-ATPase of high K (HK) and low K (LK) sheep erythrocyte membranes have been investigated. Activation of LK Na+-ATPase is observed with ATP 5 0.2 pM; activation of HK is observed with ATP 5 0.02 PM. Inhibition occurs with higher ATP. At 0.2 pM ATP, oligomycin stimulation of LK Naf-ATPase is associated with a 3to 4-fold increase in the 3ZP-“intermediate;” inhibitio...

We deene a rst-order extension LK(CP) of the cutting planes proof system CP as the rst-order sequent calculus LK whose atomic formulas are CP-inequalities P i ai xi b (xi's variables, ai's and b constants). We prove an interpolation theorem for LK(CP) yielding as a corollary a conditional lower bound for LK(CP)-proofs. For a subsystem R(CP) of LK(CP), essentially resolution working with clauses...

Recently, the free boundary problem of quasistationary Stokes flow of a mass of viscous liquid under the action of surface tension forces has been considered by R.W. HOPPER, L.K. ANTANOVSKII, and others. The solution of the Stokes equations is represented by analytic functions, and a time dependent. conformal mapping ont.o the flow domain is applied for the t.ransformation of the problem to the...

People who interact with rangelands on a regular basis gain practical insights about how rangelands work by living on and working with them. This local knowledge is refi ned over time as individuals see the way the land responds to weather, management, and disturbances. Local knowledge (LK) is a type of knowledge “integrally linked with the lives of people, always produced in dynamic interactio...

Chen conjecture states that every Euclidean biharmonic submanifold is minimal. In this paper we consider the Chen conjecture for Lk-operators. The new conjecture (Lk-conjecture) is formulated as follows: If Lkx = 0 then Hk+1 = 0 where x : M → R is an isometric immersion of a Riemannian manifold M into the Euclidean space R, Hk+1 is the (k+1)-th mean curvature of M , and Lk is the linearized ope...

In this paper we use structure preserving torus actions on KahlerEinstein manifolds to construct minimal Lagrangian submanifolds. Our main result is: Let N be a Kahler-Einstein manifold with positive scalar curvature with an effective T -action. Then precisely one regular orbit L of the T -action is a minimal Lagrangian submanifold of N . Moreover there is an (n− 1)-torus T n−1 ⊂ T n and a sequ...

In this paper we introduce the notion of lk-convexity, a natural restriction monophonic convexity. Let G be graph and k≥2 an integer. A subset S⊆V(G) is lk-convex if only for any pair vertices x,y S, each induced path length at most k connecting x y completely contained in subgraph by S. The lk-convexity consists all subsets G. work, characterize geometries (graphs that are convex with respect ...

Soluble products from antigen stimulated Trypanosoma cruzi-immune spleen cells enhanced the expression of Ia antigens on proteose-peptone-elicited mouse peritoneal macrophages (M phi). Acquisition of Ia paralleled M phi activation, previously shown to be mediated by this same source of lymphokine (LK). Expression of Ia and four other plasma membrane antigens was monitored by quantitative bindin...

LK-157 is a novel tricyclic carbapenem with potent activity against class A and class C -lactamases. When tested against the purified TEM-1 and SHV-1 enzymes, LK-157 exhibited 50% inhibitory concentrations (IC50s) in the ranges of the clavulanic acid and tazobactam IC50s (55 nM and 151 nM, respectively). Moreover, LK-157 significantly inhibited AmpC -lactamase (IC50, 62 nM), as LK-157 was >2,00...