sugar beet (beta vulgaris) is one of the hosts for different root-knot nematode species. in this study, firstly the effect of different inoculum levels including 250+250, 500, 500+250, 750, 500+500 and 1000 second stage juveniles of meloidogyne javanica were evaluated on a susceptible variety named jolgeh. the results showed that all inoculum levels were suitable for infection on sugar beet pla...

Arch Dis Child January 2011 Vol 96 No 1 An 8-year-old boy with cystic fi brosis was planned for a course of home intravenous antibiotics. A peripherally inserted central catheter (PICC) was inserted from his left wrist on the third attempt. By the third day, he had developed a swollen red forearm. Clinically, a small non-tender nodule was palpable 1 cm proximal to a healthy insertion site. The ...

In this paper, we develop a lower bound for the double slice genus of knot in 3-sphere using Casson-Gordon invariants. As an application, show that difference between and can be arbitrarily large. analogue to genus, also define superslice knot, give both upper bound. particular, through study degree Alexander polynomial is topological ribbon knot.

We characterize the Murasugi polynomial of an equivariant slice knot by proving a conjecture of J. Davis and S. Naik. A knot K in S is called periodic of period p if there is an orientation preserving action of Z/p on S which preserves K setwise and its fixed point set A is a circle disjoint to K. A is called the axis. Two periodic knots K0 and K1 of period p are called equivariantly concordant...

root-knot nematodes are one of the limiting factors in seedling production and new olive gardens establishment in iran. in view of find resistance cultivars to root-knot nematodes, importance of careful identification of species and races are clarified. in order to investigate root-knot nematodes on olive, soil and root samples of gardens and nursery in gorgan area were collected. in this study...

We show that all two-bridge knot and link complements are virtually fibered. We also show that spherical Montesinos knot and link complements are virtually fibered. This is accomplished by showing that such knot complements are finitely covered by great circle link complements.

Necessary and sufficient conditions are given for a satellite knot to be fibered. Any knot k̃ embeds in an unknotted solid torus Ṽ with arbitrary winding number in such a way that no satellite knot with pattern (Ṽ , k̃) is fibered. In particular, there exist nonfibered satellite knots with fibered pattern and companion knots and nonzero winding number.

We use Dowlin's spectral sequence from Khovanov homology to knot Floer prove that reduced with rational coefficients detects the figure-eight knot.