The aim of this study was to investigate the eff ect of boar age on quality traits and fertility of liquid-stored semen. Boars were allocated into 3 age groups: 7-10 months (young), 18-33 months (mature), 51-61 months (old). Ejaculates of ≥ 200x106 sperm/ml and 85% total motile sperm were extended to 30x106 sperm/ml, stored at 17-18 °C and used within 12-24 h for artifi cial insemination (AI) o...

An open question is whether B(F ) < ∞. The examples of Martin-McMillen and Fermigier [8] show that B(0) ≥ 23 and B(Z/2Z) ≥ 14. It follows from results of Montgomery [18] and AtkinMorain [1] that Br(F ) ≥ 1 for all torsion groups F . Kihara [11] proved that Br(0) ≥ 14 and Fermigier [8] that Br(Z/2Z) ≥ 8. Recently, Kihara [12] and Kulesz [14] proved using parametrization by Q(t) and Q(t1, t2, t3,...

In sexually reproducing organisms, primordial germ cells (PGCs) give rise to the cells of the germ line, the gametes. In many animals, PGCs are set apart from somatic cells early during embryogenesis. This study explores the origin of primordial germ cells (PGCs) of the zebra fi sh and examines their morphology during early development (1st day-15th day). PGCs were selectively stained by the al...

Methanolic extracts of diff erent parts of fi ve medicinal plants, Ferula assafoetida L. resin, Grewia asiatica L. leaves, Ipomoea hederacea Jacq. seeds, Lepidium sativum L. seeds and Terminalia chebula Retz. fruits were tested in vitro for their cytotoxic, phytotoxic, insecticidal, nematicidal and anthelmintic activities. Ipomoea hederacea showed very signifi cant phytotoxic and cytotoxic acti...

Hypoxia-ischemia (HI) occurring in immature brains stimulates the expression of tissue-type plasminogen activator (tPA). Neuroserpin is a selected inhibitor of tPA in the central nerves system. However, the role that neuroserpin plays and the possible mechanisms involved during neonatal HI are poorly defi ned. In this study, an oxygen-glucose deprivation and reoxygenation (OGD/R) model was gene...

today, using new and renewable energy sources to replace fossil fuels is greatly expanded. the solar cells are devices that convert solar energy to electrical energy. solar cells based on organic materials, especially proteins, are one of these solar cells. for example, bacteriorhodopsin (br) which is one of the membrane proteins in halobacterium salinarum could be used in solar cells and parti...

El complejo agroindustrial de primera transformación carne bovina es relevante en la&lt;br /&gt;economía la provincia La Pampa (Argentina). presente investigación propone una&lt;br /&gt;metodología para medir y evaluar el desempeño competitivo las organizaciones el&lt;br /&gt;complejo general. Se desarrolló un índice con 9 (nueve) ejes 64 indicadores&lt;br /&gt;multidimensionales, que surgen de...

High aldehyde dehydrogenase (ALDH) activity has been associated with stem and progenitor cells in various tissues. Human cord blood and bone marrow ALDH-bright (ALDH(br)) cells have displayed angiogenic activity in preclinical studies and have been shown to be safe in clinical trials in patients with ischemic cardiovascular disease. The presence of ALDH(br) cells in the heart has not been evalu...

Bacteriorhodopsin (BR) essentially free of native lipids has been prepared in a highly stable state. Purple membrane was solubilized in Triton X-100 and BR was purified by size exclusion chromatography using 3-[cholamidopropyl)dimethylammonio]-2-hydroxyl-1-propanesulfonic acid (CHAPSO) detergent at pH 5. Molar ratios of phospholipid/BR ranged from 0.4 to 0.05 corresponding to 94-98% phospholipi...