In recent years, there has been a considerable interest regarding the concept of lamellar keratoplasty (LK), which contributed in spreading the use of this procedure in the treatment of keratoconus. This is a new frontier in corneal surgery that minimizes trauma on the recipient patient since it works on a "closed bulb". The LK surgery, in fact, aims to selectively replace diseased corneal stro...

We compute the monoid V (LK(E)) of isomorphism classes of finitely generated projective modules over certain graph algebras LK(E), and we show that this monoid satisfies the refinement property and separative cancellation. We also show that there is a natural isomorphism between the lattice of graded ideals of LK(E) and the lattice of order-ideals of V (LK(E)). When K is the field C of complex ...

In view of (7), we see that Ĥk+1(x) > Ĥk(x) for all x ≥ Xk+1 such that Ĥk(x) < 1, and Ĥk+1(x) = 1 for all x ≥ Xk+1 such that Ĥk(x) = 1. Therefore, Lk+1 ≤ Lk by (5), so the first part of the proposition is proved. Let ε := c − d > 0. Notice that if Lj ≥ ε then Xj+1 ≤ Lj − ε by (OA–1). Moreover, (OA–1) also implies that if 0 ≤ Lj < ε, then Xj+1 = 0. Since we have already shown that the sequence o...

BACKGROUND Whole body vibration (WBV) is a novel modality of exercise shown to improve musculoskeletal function. This study aims to examine the effects of standing posture during low magnitude WBV training on muscle function and muscle morphology in older adults. METHODS Nineteen men and women (50-80 years) were recruited to a three month randomised controlled trial and allocated to one of th...

In this paper, we identify the fields K and Hausdorff ample groupoids G for which simple Steinberg algebra AK(G) yields a Lie [AK(G),AK(G)]. We apply obtained results to Leavitt path algebras, Kumjian-Pask algebras Exel-Pardo determine when their associated commutator are simple. particular, give easily computable criteria of form [LK(E),LK(E)] simple, E is an arbitrary graph LK(E) Also, obtain...

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

this work presents a hybrid method for motif discovery in dna sequences. the proposed method called spso-lk, borrows the concept of chebyshev polynomials and uses the stochastic local search to improve the performance of the basic pso algorithm as a motif finder. the chebyshev polynomial concept encourages us to use a linear combination of previously discovered velocities beyond that proposed b...

We analyze in the context of Leavitt path algebras some graph operations introduced in the context of symbolic dynamics by Williams, Parry and Sullivan, and Franks. We show that these operations induce Morita equivalence of the corresponding Leavitt path algebras. As a consequence we obtain our two main results: the first gives sufficient conditions for which the Leavitt path algebras in a cert...

The insect kinins are present in a wide variety of insects and function as potent diuretic peptides in flies. A C-terminal aldehyde insect kinin analog, Fmoc-RFFPWG-H (R-LK-CHO), demonstrates stimulation of Malpighian tubule fluid secretion in crickets, but shows inhibition of both in vitro and in vivo diuresis in the housefly. R-LK-CHO reduced the total amount of urine voided over 3 h from fli...

Let En be the Lubin-Tate spectrum and let Gn be the nth extended Morava stabilizer group. Then there is a discrete Gnspectrum Fn, with LK(n)(Fn) ' En, that has the property that (Fn) ' E n , for every open subgroup U of Gn. In particular, (Fn)n ' LK(n)(S). More generally, for any closed subgroup H of Gn, there is a discrete H-spectrum Zn,H , such that (Zn,H) ' E n . These conclusions are obtain...