Search results for "fertilization"

Particle size based recovery of phosphorus from combined peat and wood fly ash for forest fertilization

2016

Abstract Correlations between the concentrations of P, K, and As with particle size in fly ash from power plants were examined with a viewpoint to obtain fractions suitable for forest fertilization. Fly ash samples from several CHP plants were fractionated by using four sieves and the five fractions were analyzed by ICP-OES; it was found that both P and K are concentrated in smallest size (

Single giant larvae ofAscidia malaca from double eggs

1969

E stata operata la fusione due a due di uova vergini diAscidia malaca. Le uova giganti cosi ottenute, sono state successivamente fecondate e il loro sviluppo e stato seguito. Da esse sono state ottenute in numerosi casi delle larve giganti che mostravano unicita in tutti i loro organi. L'osservazione dell'uovo gigante, dopo fecondazione, permette di asserire che le larve giganti sono triploidi.

Incorporation of phenylalanine-H3 in the fragments of the fertilized ascidian egg

1972

E'stata studiata l'incorporazione di fenilalanina-H3 nelle meta animali e vegetative delle uova fecondate di Ascidie tagliate subito dopo l'emissione del 1° e del 2° globulo polare, allo scopo di vedere se le potenzialita di sviluppo delle meta vegetative fossero legate con un diverso metabolismo proteico. I risultati hanno mostrato che entrambe le meta incorporano fenilalanina-H3.

A model for the cortical reaction of fertilization in the sea-urchin egg.

1953

Da una soluzione di lipovitellina (la lipoproteina del tuorlo dell'uovo di pollo) trattata con spermi vivi diArbacia lixula si ha liberazione di fosfolipidi. Questo esperimento e considerato un modello della reazione corticale di fecondazione dell'uovo di riccio di mare.

Trypsin sensitivity of some proteins of the sea-urchin egg before and after fertilization an electrophoretic analysis

1955

La frazione precipitata al 50% di saturazione di solfato di Ammonio da estratti di uova vergini e fecondate diArbacia lixula presenta all'analisi elettroforetica un gruppo principale di tre componenti. Per trattamento con tripsina questo gruppo si risolve in cinque componenti nella frazione proveniente da uova vergini ed in quattro in quella proveniente da uova fecondate.

On a glycoprotein of the sea urchin eggs and its changes following fertilization.

1960

Sbattendo con etere la frazione solubile in acido tricloroacetico di uova vergini diParacentrotus lividus si forma un precipitato all'interfacie tra etere e fase acquosa. L'analisi di questo precipitato ha dimostrato che si tratta di una glicoproteina. Il precipitato non si forma da estratti di uova fecondate.

In vitro incorporation of amino acids into proteins stimulated by RNA from unfertilized sea urchin eggs.

1964

Molecular and agronomic responses to plant-growth promoting rhizobacteria (PGPR) and arbuscular mycorrhizal (AM) fungi in durum wheat

2013

Plant-growth promoting rhizobacteria (PGPR) and arbuscular mycorrhizal (AM) fungi contribute to plant nutrient uptake by increasing the availability of nutrients and the root adsorbing surface (Garg et al., 2006; Asghar et al. 2002). The first objective of this study was to determine the effects of these associations on plant total biomass and grain yield in durum wheat (cv. Anco Marzio). Secondly, we aimed to analyze the root transcriptomic and metabolomic changes in response to mychorrizal infections and the expression pattern of key genes involved in nutrient uptake and stress responses. Field analysis were carried out in inner Sicily, a typical Mediterranean area. Four types of biotic a…

The type of GnRH analogue used during controlled ovarian stimulation influences early embryo developmental kinetics: a time-lapse study

2013

OBJECTIVE: To explore if the GnRH analogue used for controlled ovarian stimulation (COS) and the ovulation triggering factor (GnRH agonist + hCG triggering versus GnRH antagonist + GnRH agonist triggering) affect embryo development and kinetics.STUDY DESIGN: In a retrospective cohort study in the Instituto Valenciano de Infertilidad (IVI) Alicante and the Instituto Universitario-IVI Valencia, Spain, 2817 embryos deriving from 400 couples undergoing oocyte donation were analysed. After controlled ovarian stimulation and IVF/intracytoplamic sperm injection, the timing of embryonic cleavages was assessed by a video time-lapse system. The results were analysed using Student's t test for compari…

Embryo classification method based in time-lapse analysis is associated with blastocyst quality

2012

groups: 87.7%(10434/11893), 87.4%(2674/3060), 80.2%(1350/1683) and 81.0%(634/783). Abnormal fertilization rate was significantly lower in 9598% group(6.9%,54/783) than other groups(16.1%,1918/11893; 13.8%,421/ 3060; 11.4%,192/1683). Good embryo, pregnancy and implantation rates were no significant differences among four groups(48.9%,61.6%,43.5%; 48.9%,62.1%,43.5%; 50.0%,57.6%,42.3%; 53.1%,62.5%,45.7%). CONCLUSION: Sperm morphology does not affect normal fertilization, embryonic development and clinical outcome.