In this paper we present a novel injection guidance system that assists an operator in the microinjection of living adherent cells. The system includes a micromanipulator, an injection system, an impedance measurement device and control software. The impedance measurement system detects changes in the resistance of an injection capillary during cell injections. From the measurement signal, the ...

The transposable Dissociation (Ds) element of maize was first discovered as a site of high-frequency chromosome breakage. Because both Ds-mediated breakage and transposition require the presence of the Activator (Ac) element, it has been suggested that chromosome breakage may be the outcome of an aberrant transposition event. This idea is consistent with the finding that only complex structures...

Objectives: To identify (1) the prevalence of condom breakage, and demographic and sexuality-related differences among young men who have sex with women reporting and not reporting this event; (2) condomspecific behaviours associated with breakage. Methods: Young men (n = 278) attending a clinic for treatment of sexually transmitted infections (STIs) responded to an anonymous questionnaire aide...

In this article, the existence of mass-conserving solutions is investigated to continuous coagulation and collisional breakage equation with singular collision kernels. Here, probability distribution function attains singularity near origin. The result constructed by using both conservative non-conservative truncations equation. proof relies on a classical weak $ L^1 compactness method.

description of lactation curve were investigated using sine function, compare it with two functions (dijekstra and wood). the data contained 32233 dairy milk yield records from 93 first parity iranian holstein cows that had calving between aug. 2008 and jul. 2009. actual milk production per day and subsequently the actual production of each animal were available in the first lactation. lactatio...