Search results for "fall"

Variable power-law scaling of hillslope Hortonian rainfall–runoff processes

2019

Hydrological studies focused on Hortonian rainfall–run-off scaling have found that the run-off depth generally declines with the plot length in power-law scaling. Both the power-law proportional coefficient and the scaling exponent show great variability for specific conditions, but why and how they vary remain unclear. In the present study, the scaling of hillslope Hortonian rainfall–run-off processes is investigated for different rainfall, soil infiltration, and hillslope surface characteristics using the physically based cell-based rainfall-infiltration-run-off model. The results show that both temporally intermittent and steady rainfalls can result in prominent power-law scaling at the …

Moisture source in the Hyblean mountains region (south-eastern Sicily,Italy):Evidence from stable isotopes signature

2006

Abstract Here the authors present results of an isotope study on precipitation collected during a 2-a period from a rain-gauge network consisting of 6 stations located at different elevations in the Hyblean Mountains (HM) region, in south-eastern Sicily. The slope of the local meteoric water line ( δD  = 6.50 δ 18 O + 9.87) obtained for the region suggests that precipitation is affected by evaporation during rainfall events. The main variations in rainwater isotope composition are due to seasonal effects and elevation. An average 2 H excess value of +21.2‰ was found for precipitation events less affected by evaporation (i.e. when the rainfall was >65 mm/month). The spatial distribution of O…

Successful gamete intrafallopian transfer following failed artificial insemination by donor: evidence for a defect in gamete transport?

1988

Gamete intrafallopian transfer (GIFT) was offered as an alternative treatment to 48 women who failed to conceive after artificial insemination with donor semen (AID) in numerous attempts (9 to 24 cycles). The evaluation of these women showed no major cause of infertility as evidenced by normal endocrine, cervical, uterine, and tubal factor studies. Their partners were either azoospermic or severely oligoasthenospermic. During the GIFT cycle, follicular development was induced with (1) clomiphene citrate (days 3 to 7) plus human menopausal gonadotropins (hMG) from day 6 on or (2) human follicle-stimulating hormone (days 3 to 4) plus hMG (day 5 on), until ultrasound revealed 2 follicles 16 mm…

INVESTIGATIONS ON INFILTRATION METHODS FOR AN IMPROVED SOIL HYDRAULIC CHARACTERIZATION

2020

Una ricerca interculturale in Sicilia: l'innamoramento vissuto dagli adolescenti tunisini nati a Mazara del Vallo

2011

Si presenta una ricerca avviata nell’autunno del 2009. Il problema dell’educazione affettiva degli adolescenti emerge quando avviene il primo innamoramento. Tale fenomeno mostra come sia andata fino a quel momento l’educazione dei sentimenti e lascia presupporre che cosa bisogna ancora fare per portarla a compimento. Si è voluto indagare, sia pure con uno strumento che non scava in profondità ma si accontenta della sincerità delle risposte, il modo in cui gli adolescenti tunisini nati in Sicilia vivono il fenomeno del primo innamoramento e i cambiamenti che tale fenomeno determina negli adolescenti che lo vivono e nel loro più immediato intorno sociale. Si espongono i risultati relativi agl…

Il primo innamoramento vissuto dagli adolescenti palermitani

2012

In questo contributo, è presentato il processo di una ricerca avviata nel 2010. Il problema dell'educazione affettiva degli adolescenti emerge quando si verifica il primo innamoramento. Questo fenomeno mostra come l'educazione dei sentimenti fino ad ora si è sviluppata e presuppone ciò che è necessario per completarlo. Volevamo indagare sul modo in cui gli adolescenti palermitani vivono il primo innamoramento e sui cambiamenti che questo fenomeno provoca negli adolescenti che lo vivono e nel loro ambiente sociale immediato. Si è utilizzato uno strumento (l'intervista) che non va abbastanza in profondità, ma si limita a rilevare la sincerità delle risposte. Dopo aver descritto il modo in cui…

Typology of pentad circulation anomalies over the Eastern Africa - Western Indian Ocean region, and their relationship with rainfall

2005

International audience; The aim of this study was to classify the most frequently observed atmospheric circula- tion anomaly patterns in eastern Africa and the adjacent Indian Ocean. As an example of the useful- ness of such a classification, the second objective was to test whether these patterns account for intraseasonal rainfall anomalies in the region. A partitioning algorithm, known as dynamical cluster analysis, was therefore applied to the zonal (U)and meridional (V)components of the wind anom- alies, obtained from the NCEP-NCAR Reanalysis R-2 at the pentad (5 d) timescale. The 3 geopoten- tial levels 850, 700 and 200 hPa were combined. Focus is on the transition seasons (March to Ma…

Heading which way? Y-maze chemical assays: not all crustaceans are alike

2015

In a world full of chemicals, many crustaceans rely on elaborate olfactory systems to guide behaviors related to finding food or to assess the presence of conspecifics and predators. We analyzed the responses of the isopod Saduria entomon to a range of stimuli by which the animal is likely to encounter in its natural habitat using a Y-maze bioassay. In order to document the efficiency of the experimental design, the same bioassay was used to test the behavior of the crayfish Procambarus fallax whose ability to track odors is well documented. The crayfish performed well in the Y-maze and were able to locate the source of a food-related odor with high fidelity. The isopod S. entomon reacted i…

Landslide susceptibility modelling for extreme rainfall-triggered multiple landslides: a key study from the 2009 event in the Giampilieri Area(Sicily…

2013

Food loss and waste in food supply chains. A systematic literature review and framework development approach

2021

Abstract This study examines the state of the art of the literature in the domain of food loss and waste (FLW) in food supply chains (FSC). The authors used a systematic literature review (SLR) approach to examine and synthesise the findings of the existing literature to identify the key research themes, research gaps and avenues of future research on FLW in FSC. To this end, this SLR considered 152 articles relevant for the review. The authors uncovered the extant literature in the domain by presenting the research profile of the selected studies, along with thematic analysis. The authors identified eight key themes from the extant literature. The themes range from factors responsible for …