Authors:Donatella Fiorani, Marta Acierno, Silvia Cutarelli, and Adalgisa Donatelli
-Based Framework for Conservation Process . Journal of Cultural Heritage ( 2017 ) 24C . 124 – 133 . Giovanni Adamo – Tullio Gregory : Informatica Umanistica . In: Enciclopedia Italiana , VI Appendice , 2000 . Available at http
Authors:P. Sarlós, A. Molnár, M. Kókai, and et al.
The aim of the present study was to develop a treatment supporting the membrane of ram spermatozoa. Semen of different ejaculates collected from breeding rams was mixed andsamples of 109 sperm cells per ml and Tris-egg yolk extender were completed with the following antioxidants: a-tocopherol acetate (E), glutathione peroxidase (GP), Aromex® (AR), resveratrol (R), resveratrol + vitamin E (RE), resveratrol + Aromex® (RAR), resveratrol + GP (RGP). Peroxidation was evaluated by the analysis of malondialdehyde (MDA) during incubation for 30, 60 and 120 min at 37°C as well as during a 24-h incubation at 5°C. The success of preservation was checked in a 9-day-long period by observing the acrosomal defects and the motility of spermatozoa. Concentration of MDA was 4.06 nmol/109 spermatozoa in samples treated with 15 µg R while the control sample contained 69.79 nmol MDA per 109 spermatozoa after 24-h incubation. Following 30-, 60- and 120-min storage the concentration of MDA in control and R-treated samples was 25.89, 36.91, 49.57 and 3.69, 3.74, 3.74 nmol/109 spermatozoa, respectively. Moreover, a significantly higher proportion of motile sperm cells was observed in the treated than in the control samples. The frequency of acrosomal defects was lower in the treated groups than in the control. These results indicate that RAR treatment can improve the effects of ram semen preservation.
A recent paper about plutonium disproportionation confuses charge balance with charge conservation. To explain disproportionation, impossible solutions in which the charges do not balance were proposed.
of reproductive biotechnology in wildlife conservation: Problems and challenges. Proc. Soc. Study Theriogenology. pp. 15-22.
Meintjes, M., Bartels, P., Bezuidenhout, C., Visser, D., Meintjes, J., Loskutoff, N. M