3,116 research outputs found

    Does industry resilience matter for postshock industrial policy? A focus on tourism-related industries

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    Selective industrial policies have been increasingly used by governments to achieve desired normative goals. However, they have been revealed to be complex and vulnerable interventions, demanding robust tools able to justify choices and mitigate potential ‘government failures’. In light of the emerging challenges and potential disruptions that might threaten our economies and societies, we contend that postshock industry resilience can be a valuable analytical framework to understand how different sectors react to unforeseen shocks. Accordingly, we present a methodology that measures postshock industry resilience and apply it to the Italian case in the aftermath of the 2008 shock. Particular attention is devoted to tourism-related industries. Main findings show that the industries reacted heterogeneously to the 2008 shock. For tourism-related industries, the results suggest following an ad hoc approach to the analysis of each tourism-focused industry to avoid generalizations that might lead to incorrect policy interpretations

    Visualization of the three-dimensional structure of the human centromere in mitotic chromosomes by super-resolution microscopy

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    The human centromere comprises large arrays of repetitive alpha-satellite DNA at the primary constriction of mitotic chromosomes. In addition, centromeres are epigenetically specified by the centromere-specific histone H3 variant CENP-A that supports kinetochore assembly to enable chromosome segregation. Since CENP-A is bound to only a fraction of the alpha-satellite elements within the megabase-sized centromere DNA, correlating the three-dimensional (3D) organization of alpha-satellite DNA and CENP-A remains elusive. To visualize centromere organization within a single chromatid, we used a combination of the Centromere Chromosome Orientation Fluorescent In Situ Hybridization (Cen-CO-FISH) technique together with Structured Illumination Microscopy (SIM). Cen-CO-FISH allows the differential labeling of the sister chromatids without the denaturation step used in conventional FISH that may affect DNA structure. Our data indicate that alpha-satellite DNA is arranged in a ring-like organization within prometaphase chromosomes, in presence or absence of spindle's microtubules. Using expansion microscopy (ExM), we found that CENP-A organization within mitotic chromosomes follows a rounded pattern similar to that of alpha-satellite DNA, often visible as a ring thicker at the outer surface oriented towards the kinetochore-microtubules interface. Collectively, our data provide a 3D reconstruction of alpha-satellite DNA along with CENP-A clusters that outline the overall architecture of the mitotic centromere. [Media: see text] [Media: see text] [Media: see text] [Media: see text

    Reconsidering Calcium Dehydration as the Rate-Determining Step in Calcium Mineral Growth

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    The dehydration of cations is generally accepted as the rate-limiting step in many processes. Molecular dynamics (MD) can be used to investigate the dynamics of water molecules around cations, and two different methods exist to obtain trajectory-based water dehydration frequencies. Here, these two different post-processing methods (direct method versus survival function) have been implemented to obtain calcium dehydration frequencies from a series of trajectories obtained using a range of accepted force fields. None of the method combinations reproduced the commonly accepted experimental water exchange frequency of 10–8.2 s–1. Instead, our results suggest much faster water dynamics, comparable with more accurate ab initio MD simulations and with experimental values obtained using neutron scattering techniques. We obtained the best agreement using the survival function method to characterize the water dynamics, and we show that different method combinations significantly affect the outcome. Our work strongly suggests that the fast water exchange kinetics around the calcium ions is not rate-limiting for reactions involving dissolved/solvated calcium. Our results further suggest that, for alkali and most of the earth alkali metals, mechanistic rate laws for growth, dissolution, and adsorption, which are based on the principle of rate-limiting cation dehydration, need careful reconsideration

    Comparison of Computerized Cardiotocography Parameters between Male and Female Fetuses

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    Fetal sex has been identified as an important factor influencing pregnancy outcomes, but its impact on fetal heart rate (FHR) variability in uncomplicated pregnancies is still unclear. The objective of the study was to assess short-term variability (STV) and other computerized cardiotocography (cCTG) parameters in relation to fetal sex during fetal antepartum surveillance. We retrospective compared cCTG parameters of male and female fetuses in uncomplicated singleton pregnancies at term. In addition to univariate analysis, a multivariate analysis was performed taking into account maternal characteristics. A total of 689 cCTG recordings were analyzed: 335 from male fetuses and 354 from female fetuses. Analysis of cCTG results by fetal sex showed no significant difference in percentage of signal loss, number of contractions, movements, accelerations and decelerations, long-term variability (LTV), and STV at both uni-and multivariate analysis. There was a statistically significant difference for baseline FHR at the univariate analysis, which was not confirmed by a multivariate analysis. Our results suggest that fetal sex did not affect cCTG parameters in uncomplicated term singleton pregnancies, and therefore it does not need to be taken into account when interpreting cCTG in physiological conditions

    Evaluation of umbilical cord pulsatility after vaginal delivery in singleton pregnancies at term.

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    Abstract Objectives To define the duration of umbilical cord pulsatility (UCP) after vaginal delivery and to evaluate its possible association with maternal characteristics and obstetric and neonatal variables. Study design Prospective observational study on women with a singleton pregnancy at term who had a vaginal delivery and cord clamping at the cessation of pulsations. The collection of UCP duration was performed through a stopwatch and by manual palpation of the umbilical cord. Maternal (age, BMI, parity, antepartum hemoglobin), obstetric (pregnancy characteristics, gestational age at delivery, induction of labor, duration of the first, the second and the third stage of labor, post-partum blood loss, umbilical cord length) and neonatal (birthweight, Apgar score, hematocrit, hemoglobin) variables were then compared between two groups: long-term vs. short-term UCP. Results A total of 102 women were identified. The median duration of UCP after birth was 213 s (IQR 120, 420), corresponding to 3 min and 33 s. The long-term UCP group (n = 51) had a significantly longer duration of third stage of labor (median 12 vs. 8 min, p  Conclusion For the first time we have reported the duration of UCP after vaginal delivery. An increased duration of UCP is associated with a prolonged duration of third stage of labor and a higher birthweight

    Exercise during pregnancy and risk of preterm birth in overweight and obese women: A systematic review and meta-analysis of randomized controlled trials

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    INTRODUCTION: The incidence of overweight and obesity in pregnancy has risen significantly in the last decades. Overweight and obesity have been shown to increase the risk for some adverse obstetric outcomes. Lifestyle interventions, such as diet, physical activity and behavior changes, may reduce these risks by promoting weight loss and/or preventing excessive weight gain. The possible impact of exercise on the risk of preterm birth (PTB) in overweight or obese women is controversial. Therefore, the aim of our study was to evaluate the effect of exercise on the risk of PTB in overweight or obese pregnant women. MATERIAL AND METHODS: MEDLINE, EMBASE, Web of Sciences, Scopus, ClinicalTrial.gov, OVID and Cochrane Library were searched from their inception to November 2016. This meta-analysis included only randomized controlled trials (RCTs) of pregnant women assigned or not assigned before 25 weeks to an aerobic exercise regimen. Types of participants included overweight or obese (mean body mass index ≥25 kg/m2 ) women with singleton pregnancies without any contraindication to physical activity. The summary measures were reported as relative risk (RR) or as mean difference (MD) with 95% confidence intervals (CI). The primary outcome was the incidence of PTB <37 weeks. RESULTS: Nine trials including 1502 overweight or obese singleton gestations were analyzed. Overweight and obese women who were randomized in early pregnancy to aerobic exercise for about 30-60 min three to seven times per week had a lower percentage of PTB <37 weeks (RR 0.62, 95% CI 0.41-0.95) compared with controls. The incidence of gestational age at delivery (MD 0.09 week, 95% CI -0.18 to 0.24) and cesarean delivery (RR 0.93, 95% CI 0.77-1.10) were similar in both groups. Women in the exercise group had a lower incidence of gestational diabetes mellitus (RR 0.61, 95% CI 0.41-0.90) compared with controls. No differences in birthweight (MD 16.91 g, 95% CI -89.33 to 123.19), low birthweight (RR 0.58, 95% CI 0.25-1.34), macrosomia (RR 0.92, 95% CI 0.72-1.18) and stillbirth (RR 2.13, 95% CI 0.22-20.4) between the exercise group and controls were found. CONCLUSIONS: Overweight and obese women with singleton pregnancy can be counseled that, compared with being more sedentary, aerobic exercise for about 30-60 min three to seven times per week during pregnancy is associated with a reduction in the incidence of PTB. Aerobic exercise in overweight and obese pregnant women is also associated with a significant prevention of gestational diabetes mellitus, and should therefore be encouraged

    Citron kinase controls abscission through RhoA and Anillin.

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    The small GTPase RhoA plays a crucial role in the different stages of cytokinesis, including contractile ring formation, cleavage furrow ingression, and midbody abscission. Citron kinase (CIT-K), a protein required for cytokinesis and conserved from insects to mammals, is currently considered a cytokinesis-specific effector of active RhoA. In agreement with previous observations, we show here that, as in Drosophila cells, CIT-K is specifically required for abscission in mammalian cells. However, in contrast with the current view, we provide evidence that CIT-K is an upstream regulator rather than a downstream effector of RhoA during late cytokinesis. In addition, we show that CIT-K is capable of physically and functionally interacting with the actin-binding protein anillin. Active RhoA and anillin are displaced from the midbody in CIT-K-depleted cells, while only anillin, but not CIT-K, is affected if RhoA is inactivated in late cytokinesis. The overexpression of CIT-K and of anillin leads to abscission delay. However, the delay produced by CIT-K overexpression can be reversed by RhoA inactivation, while the delay produced by anillin overexpression is RhoA-independent. Altogether, these results indicate that CIT-K is a crucial abscission regulator that may promote midbody stability through active RhoA and anillin

    Scrivere la LIS con il Sign Writing. Manuale introduttivo

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    Abstract not availableQuesto manuale nasce da un\u27intuizione, quella di poter utilizzare un sistema per trascrivere la Lingua dei Segni Italiana (LIS), adattando ai segni italiani il Sign Writing, ideato nel 1995 da Valerie Sutton (1995) e proposto come "un alfabeto per scrivere le lingue dei segni". La LIS infatti, come le altre lingue dei segni, non ha una corrispettiva forma scritta ed e&#768; stata tramandata di generazione in generazione dalla comunita&#768; sorda. La mancanza di una forma scritta, del resto comune a molte altre lingue, ha avuto tutta una serie di implicazioni nella storia della comunita&#768; sorda e la possibilita&#768; di utilizzare un sistema di trascrizione - come ha detto Valerie Sutton - puo&#768; aprire nuove frontiere della comunicazione per i segnanti. L\u27attuale generazione di persone sorde adulte, che sta imparando a leggere e a scrivere le lingue segnate per la prima volta, sta creando la base per il lavoro delle generazioni future

    Neuraxial analgesia to increase the success rate of external cephalic version: a systematic review and meta-analysis of randomized controlled trials

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    BACKGROUND: External cephalic version is a medical procedure in which the fetus is externally manipulated to assume the cephalic presentation. The use of neuraxial analgesia for facilitating the version has been evaluated in several randomized clinical trials, but its potential effects are still controversial. OBJECTIVE: The objective of the study was to evaluate the effectiveness of neuraxial analgesia as an intervention to increase the success rate of external cephalic version. DATA SOURCES: Searches were performed in electronic databases with the use of a combination of text words related to external cephalic version and neuraxial analgesia from the inception of each database to January 2016. STUDY ELIGIBILITY CRITERIA: We included all randomized clinical trials of women, with a gestational age ≥36 weeks and breech or transverse fetal presentation, undergoing external cephalic version who were randomized to neuraxial analgesia, including spinal, epidural, or combined spinal-epidural techniques (ie, intervention group) or to a control group (either intravenous analgesia or no treatment). STUDY APPRAISAL AND SYNTHESIS METHODS: The primary outcome was the successful external cephalic version. The summary measures were reported as relative risk or as mean differences with a 95% confidence interval. TABULATION, INTEGRATION, AND RESULTS: Nine randomized clinical trials (934 women) were included in this review. Women who received neuraxial analgesia had a significantly higher incidence of successful external cephalic version (58.4% vs 43.1%; relative risk, 1.44, 95% confidence interval, 1.27-1.64), cephalic presentation in labor (55.1% vs 40.2%; relative risk, 1.37, 95% confidence interval, 1.08-1.73), and vaginal delivery (54.0% vs 44.6%; relative risk, 1.21, 95% confidence interval, 1.04-1.41) compared with those who did not. Women who were randomized to the intervention group also had a significantly lower incidence of cesarean delivery (46.0% vs 55.3%; relative risk, 0.83, 95% confidence interval, 0.71-0.97), maternal discomfort (1.2% vs 9.3%; relative risk, 0.12, 95% confidence interval, 0.02-0.99), and lower pain, assessed by the visual analog scale pain score (mean difference, -4.52 points, 95% confidence interval, -5.35 to 3.69) compared with the control group. The incidences of emergency cesarean delivery (1.6% vs 2.5%; relative risk, 0.63, 95% confidence interval, 0.24-1.70), transient bradycardia (11.8% vs 8.3%; relative risk, 1.42, 95% confidence interval, 0.72-2.80), nonreassuring fetal testing, excluding transient bradycardia, after external cephalic version (6.9% vs 7.4%; relative risk, 0.93, 95% confidence interval, 0.53-1.64), and abruption placentae (0.4% vs 0.4%; relative risk, 1.01, 95% confidence interval, 0.06-16.1) were similar. CONCLUSION: Administration of neuraxial analgesia significantly increases the success rate of external cephalic version among women with malpresentation at term or late preterm, which then significantly increases the incidence of vaginal delivery
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