Search results for "fertility"
showing 10 items of 629 documents
Correlates of the non-use of contraception among female university students in Italy
2021
The present paper scrutinizes the correlates of the non-use of contraception among young women in Italy. To this end we consulted two releases of Selfy (Sexual and Emotional LiFe of Youths) survey, which offer information for a nationally sample of university students. The results reveal that the likelihood of non-using contraception is higher among women living in the South and among those with previous experience of unsafe sexual behaviours. The risk of unprotected sex is also higher within a group of students who are relatively older than the others and live in a stable cohabiting union.
Nutrient removal by rice–wheat cropping system as influenced by crop establishment techniques and fertilization options in conjunction with microbial…
2020
AbstractNutrient uptake by the rice–wheat cropping system (RWCS) is an important indicator of soil fertility and plant nutrient status. The hypothesis of this investigation was that the rate and sources of nutrient application can differentially influence nutrient removal and soil nutrient status in different crop establishment techniques (CETs). Cropping system yield was on par in all the CETs evaluated, however, there were significant changes in soil nutrient availability and microbiological aspects. The system nitrogen (N), phosphorus (P), potassium (K) and zinc (Zn) uptake in aerobic rice system followed by zero tillage wheat (ARS-ZTW) was 15.7–17.6 kg ha−1, 0.7–0.9 kg ha−1, 7–9.8 kg ha…
Influence of plant traits, soil microbial properties, and abiotic parameters on nitrogen turnover of grassland ecosystems
2016
International audience; Although it is known that multiple interactions among plant functional traits, microbial properties , and abiotic soil parameters influence the nutrient turnover, the relative contribution of each of these groups of variables is poorly understood. We manipulated grassland plant functional composition and soil nitrogen (N) availability in a multisite mesocosm experiment to quantify their relative effects on soil N turnover. Overall, root traits, arbuscular mycorrhizal colonization, denitrification potential, as well as N availability and water availability, best explained the variation in measured ecosystem properties, especially the trade-off between nutrient sequest…
Abstención sexual durante la Cuaresma en Andalucía a lo largo del siglo XX y su impacto en la estacionalidad de los nacimientos
2018
Durante siglos ha permanecido vigente en las poblaciones católicas un precepto religioso que prohibía las relaciones sexuales durante la Cuaresma. Esta interdicción repercutía en una disminución de concepciones y en un repunte tras dicho periodo, ambos difíciles de detectar porque, en poblaciones que no ejercían un control efectivo de la fecundidad, también se registraba un pico de concepciones durante la primavera. En la actualidad este precepto ha desaparecido como consecuencia de un proceso de erosión que no conocemos suficientemente. Con los datos anonimizados de todas las personas nacidas en Andalucía y supervivientes a 1 de enero de 2003 (n=8.397.206), este trabajo pretende determinar…
HPV infection in male partners of infertile couples seems to not affect seminal parameters
2012
[P-057] HPV infection in male partners of infertile couples seems to not affect seminal parameters A.M. Brucculeri1, G. Ruvolo1, L. Giovannelli2, R. Schillaci3, E. Cittadini1, G. Scaravelli4, A. Perino3. 1Centro di Biologia della Riproduzione, Centro di Biologia della Riproduzione, Palermo, Italy; 2University of Palermo, Dipartimento di Scienze per la Promozione della Salute, Palermo, Italy; 3University of Palermo, Dipartimento Materno Infantile, Palermo, Italy; 4Istituto Superiore di Sanità, Istituto Superiore di Sanità, Roma, Italy Introduction: Human papilloma viruses (HPV) are agents of the most common sexually transmitted disease. This small DNA viruses induce epithelial cell prolifera…
Circulating progesterone levels and ongoing pregnancy rates in controlled ovarian stimulation cycles for in vitro fertilization: analysis of over 400…
2010
background: The influence of elevated serum progesterone levels during in vitro fertilization/intracytoplasmic sperm injection (IVF/ ICSI) cycles on pregnancy rates is a matter of continued debate among fertility clinicians. Efforts to resolve this question have been impeded by the various assays used to measure progesterone and the different, arbitrary threshold values for defining ‘high’ progesterone levels. methods: A non-interventional, retrospective, observational, single-centre cohort study evaluated the relationship between serum progesterone levels on the day of human chorionic gonadotrophin (hCG) administration and the ongoing pregnancy rate in 4032 patients undergoing IVF/ICSI cyc…
The influence of proper vine pruning techniques on crop formation and quality of the grapes
2018
We have established the importance of proper vine pruning techniques depending on individual grape variety characteristics and its influence on crop formation and quality of the grapes. The technique of studying the influence of the length of the vine pruning on the qualitative indices of the fruit of the grapes has been proposed. Field research was carried out in 2014-2016. Agricultural technology in the experiment is commonly used for forest-steppe. The vines are planted on the plot without irrigation, the shape of the shrubs is harp multy sleeved with a knot of substitution, sheltered on a vertical trellis of 1.5 m heigh. The methods that can be used to increase the yield of grape variet…
The heparin-glutathione test: an alternative to the hypo-osmotic swelling test to select viable sperm for intracytoplasmic sperm injection
1998
Abstract Objective: To evaluate the heparin-glutathione test (HEGLUT) for the selection of viable sperm for intracytoplasmic sperm injection (ICSI). Design: A prospective study. Setting: Department of Pediatrics, Obstetrics and Gynecology, University of Valencia and Instituto Valenciano de Infertilidad. Patient(s): Semen samples from healthy donors and patients with infertility. Intervention(s): Sperm samples were kept in culture for different periods in Ham's F-10 medium supplemented or not supplemented with heparin, reduced glutathione (GSH), or a heparin-GSH mixture. Control and heparin-GSH–treated spermatozoa were injected into hamster oocytes. The HEGLUT and ICSI were performed. Main O…
Validation of the German version of the ‘Hypogonadism Related Symptom Scale’ (HRS) in andrological patients with infertility, HIV infection and metab…
2013
Summary As commonly used self-reported screening instruments for male hypogonadism demonstrated lack of specificity, a Hypogonadism Related Symptom Scale (HRS) was developed in 2009 as a novel self-rating screening tool. As the questionnaire has not been validated, the purpose of our study was to perform a validation in patients presenting with different disorders (e.g. infertility, HIV infection or metabolic syndrome) and disease-related risk to develop hypogonadism. Two hundred and eighteen patients aged 19–71 years (40.1 ± 9.5) who completed the HRS and other common questionnaires [International Index Of Erectile Function (IIEF), National Institutes of Health Chronic Prostatitis Symptom …
The effect of women’s participation in the labour market on the postponement of first childbirth: a comparison of Italy and Hungary
2014
This paper analyses the effect of increasing female participation in the labour market on the transition to first childbirth. Regional perspectives are considered to help us understand how postponement behaviour is changing over time and at different paces in each region. The analysis is based on the first wave of the Generations and Gender Survey of Italy and Hungary. We use a multilevel event history random intercept model to examine the effect of individuals’ positions in the labour market on the transition to motherhood, controlling for differences in macrolevel factors related to regional backgrounds in the two countries. The regional data for Italy came from the Italian National Stati…