Background Sperm DNA fragmentation is known as an important cause of male infertility. The influence of sperm DNA damage on reproductive potential has been subject of many studies indicating various results and remaining the subject controversial. In this study, we investigated differences of the semen parameters and intracytoplasmic sperm injection (ICSI) outcome according to sperm DNA fragmen...

We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.

during many years after second world war, keynos and welfare economy dominated europe and many other countries. transpiring the depression in 1970's and welfare government failure, market economy was observed by west politicians and voters. hayek was one of the few intellectuals who theoretically and practically opposed the welfare and keynes government by raising the economical spontaneou...

We present a new a-priori estimate for discrete coagulation-fragmentation systems with size-dependent diffusion within a bounded, regular domain confined by homogeneous Neumann boundary conditions. Following from a duality argument, this a-priori estimate provides a global L2 bound on the mass density and was previously used, for instance, in the context of reaction-diffusion equations. In this...

The production of pairs of hadrons in hadronic collisions is studied using a next-to-leading-order Monte Carlo program based on the phase space slicing technique. Up-to-date fragmentation functions based on fits to CERN LEP data are employed, together with several versions of current parton distribution functions. Good agreement is found with data for the dihadron mass distribution. A compariso...

background: sperm dna fragmentation is known as an important cause of male infertility. the influence of sperm dna damage on reproductive potential has been subject of many studies indicating various results and remaining the subject controversial. in this study, we investigated differences of the semen parameters and intracytoplasmic sperm injection (icsi) outcome according to sperm dna fragme...

The discrete case of the growth-fragmentation equation is not as popular in the literature as the continuous form of it, hence the need to explore the discrete version of this model for some interesting analysis. In this paper, We examine the discrete growth-fragmentation equations. The problem is treated as an infinite-dimensional differential equation, posed in a suitable Banach space. Pertur...