Selection methods for the isolation of i(-d) and i(s) mutants are described. Two hundred and forty-seven i(-d) and 98 i(s) mutations have been localized by deletion mapping. All i(-d) mutations map in the region of the i gene, which codes for the aminoterminal part of the lac repressor, whereas i(s) mutations map in the middle of the i gene and at the proximal end of the i(-d) cluster.

(2) Let S, T be relational structures, K, L be non empty relational structures, f be a map from S into T , and g be a map from K into L. Suppose that (i) the relational structure of S = the relational structure of K, (ii) the relational structure of T = the relational structure of L, (iii) f = g, and (iv) f is antitone. Then g is antitone. 1This work was partially supported by the Office of Nav...

1.2. We refer to [LMB] for the basic background on stacks. Let us quickly recall: a stack over a scheme S is a sheaf of groupoids on the faithfully flat topology of S-schemes, where the presheaf requirement that the composition of the restriction maps is the restriction map of the composition is understood in the weak sense. Stacks form a 2-category with fiber products and there is a clear embe...

Accurately mapping the course and vegetation along a river is challenging, since overhanging trees block GPS at ground level and occlude the shore line when viewed from higher altitudes. We present a multimodal perception system for the active exploration and mapping of a river from a small rotorcraft. We describe three key components that use computer vision, laser scanning, inertial sensing a...

Obstructive apnea (OA) can exert significant effects on renal sympathetic nerve activity (RSNA) and hemodynamic parameters. The present study focuses on the modulatory actions of RSNA on OA-induced sodium and water retention. The experiments were performed in renal-denervated rats (D; N = 9), which were compared to sham (S; N = 9) rats. Mean arterial pressure (MAP) and heart rate (HR) were asse...

We show that given a type α of an adding machine, for a dense set of parameters s in the interval [ √ 2, 2], if f is the tent map with slope s, then the restriction of f to the closure of the orbit of the turning point is topologically conjugate to the adding machine map of type α.

We here identified for the first time the presence of Mycobacterium avium paratuberculosis (MAP) sheep (S) strain in Argentina. IS900 polymerase chain reaction (PCR) was positive. The S strain was compared with MAP cattle (C) strains by using IS1311 PCR-restriction endonuclease analysis (PCR-REA), multiplex PCR and restriction fragment length polymorphism (RFLP) analysis.

The taxonomy, morphology and distribution of  rust species on Arundineae (Poaceae) in Iran was studied. Five species of Puccinia viz. P. magnusiana Körn., P. phragmitis (Schumach.)Körn., P. isiacae G. Winter, P. trabutii Roum. & Sacc. and P. akiyoshidanensis Morim. are described and illustrated. Of these, Puccinia akiyoshidanensis is considered as a distinct species and newly recorded for Irani...

To further enhance the nonlinear and cryptographic properties of chaotic S-boxes, a novel S-box design is proposed based on discrete map improved artificial bee colony algorithm. Firstly, generated by sequence initialized opposition-based optimization. Then, dual transposition algorithm used to optimize population, where Gaussian swap engaged strengthen optimum efficiency, make population acqui...