We present FiD (Fragment iDentificator), a software tool for the structural identification of product ions produced with tandem mass spectrometric measurement of low molecular weight organic compounds. Tandem mass spectrometry (MS/MS) has proven to be an indispensable tool in modern, cell-wide metabolomics and fluxomics studies. In such studies, the structural information of the MS(n) product i...

The research is designed to improve measurement of fast fragmentation kinetics of surface activated ions, to improve our understanding of how ions fragment and how energy transfers in collisions of ions with surfaces. A new technique, silicon nano-particle assisted laser desorption/ionization (SPALDI), was developed recently and allowed investigation of the kinetics of surfaceinduced dissociati...

The optical density ( 450 nm) of samples of homogenized fungal biomass correlated linearly with the dry weight of the biomass in the samples. As shown for broths of the filamentous microfungus Neurospora sitophila, the sensitivity of the technique depended on the extent of fragmentation of fungal hyphae during homogenization: increased fragmentation increased sensitivity. The method applied dur...

It is argued that a standard measurement of multiplicities in proton-proton collisions is sufficient to construct a single nucleon fragmentation function. A proposed method is based on measurement of mean values of produced particles 〈n〉 and pairs of particles 〈n(n− 1)〉 in symmetric and asymmetric bins. PACS: 13.85.Hd

The present study was conducted to evaluate the endocrinological effects of the pituitary on luteal maintenance and regression in the cyclic golden hamster (Mesocritus auratus). After hypophysectomy (Hypox) at 0900 h on day 1 of the estrous cycle (the day of ovulation), the animals received injection of prolactin (PRL) or PRL plus equine chorionic gonadotropin (eCG). They were decapitated at 15...

(2013) A new methodology for measuring land fragmentation. Abstract The presence of land fragmentation implies that the existing land tenure structure is defective. It is a major problem in many regions because it restricts agricultural development and reduces the opportunities for sustainable rural development. Whilst policies to counter land fragmentation require reliable measurement indices,...

We show some recent HERWIG results related to the top quark mass reconstruction at the LHC and discuss possible improvements for studies of the bottom quark fragmentation function in the top decay. The large amount of t ¯ t pairs which are expected at the future experiments at the LHC 1 will allow precise measurements of the top-quark properties. For the sake of an improved measurement of the t...

Zooarchaeologists have long recognized that the number of identified specimens (NISP) is dependent on the degree to which bones are fragmented, but attempts are rarely made to control for the effects of fragmentation on NISP. This paper provides insight into those effects by presenting both a formal model of the relationship between NISP and fragmentation and experimental data on that relations...