Search results for "Stage"
showing 10 items of 1393 documents
New-stage discharge relationships for free and submerged sluice gates
2012
Abstract The flow movement through a sluice gate is investigated for both free and submerged flow conditions. For free flow condition, the current dimensionless formula, indicated acceptable accuracy; while for submerged flow condition it was modified especially for low submerged condition. In this regard, Buckingham theorem along with the Incomplete Self-Similarity concept was employed and a new stage–discharge relationship was developed accordingly. Also, to achieve a suitable formula for submerged flow condition being accurate in low submergence, the maximum tailwater depth allowing the free flow condition and head loss factor were identified as missing parameters in the functional dimen…
Being successful in the world of narrow opportunities: transmission patterns of the trematode Ichthyocotylurus pileatus.
2009
SUMMARYParasites with complex life cycles face 2 major challenges for transmission in northern latitudes. They have to cope with the general unpredictability associated with the series of transmission events required for completion of the cycle, and transmission has to be completed within a narrow temporal window because of strong seasonality. Despite this, some parasites show high transmission success, suggesting the operation of effective transmission mechanisms. We explored the transmission of Ichthyocotylurus pileatus (Trematoda) from its snail (Valvata macrostoma) to fish (Perca fluviatilis) hosts by examining some key characteristics in the dynamics of the cercarial emergence from sna…
Identity Problems, Ego Strengths, Perceived Stress, and Adjustment During Contextual Changes at University
2017
ABSTRACTWe present a 2-year time-lag study in which Canadian and Spanish students’ perceptions of stress, identity problems, and psychosocial maturity (ego strengths) were examined in relation to academic, social, and personal-emotional adjustment to university under different conditions of macro-environmental disruption (i.e., academic and economic) and no disruption (stability). In the academic disturbance context, students reported increased stress and the economic disruption situation was associated with greater identity problems. The expected relationships were found among the variables in the study. Students reported greater social maladjustment at university related to economic disru…
Aberrant methylation patterns at the two-cell stage as an indicator of early developmental failure
2002
The fertilized mouse egg actively demethylates the paternal genome within a few hours after fertilization, whereas the maternal genome is only passively demethylated by a replication-dependent mechanism after the two-cell stage. This evolutionarily conserved assymetry in the early diploid mammalian embryo may have a role in methylation reprogramming of the two very different sets of sperm and egg chromatin for somatic development and formation of totipotent cells. Immunofluorescence staining with an antibody against 5-methylcytosine (MeC) showed that the incidence of abnormal methylation patterns differs between mouse two-cell embryos from superovulated females, nonsuperovulated matings, an…
Curative therapies are superior to standard of care (transarterial chemoembolization) for intermediate stage hepatocellular carcinoma.
2017
Background and aims the Barcelona Clinic Liver Cancer intermediate stage (BCLC-B) of hepatocellular carcinoma (HCC) includes extremely heterogeneous patients in terms of tumor burden and liver function. Transarterial-chemoembolization (TACE) is the first-line treatment for these patients although it may be risky/useless for someone, while others could undergo curative treatments. This study assesses the treatment type performed in a large cohort of BCLC-B patients and its outcome. Methods retrospective analysis of 485 consecutive BCLC-B patients from the ITA.LI.CA database diagnosed with naive HCC after 1999. Patients were stratified by treatment. Results 29 patients (6%) were lost to follo…
Transarterial chemoembolization and sorafenib in patients with intermediate-stage hepatocellular carcinoma: time to enter routine clinical practice?
2015
According to the guidelines of the European Association for the Study of the Liver (EASL), patients affected from hepatocellular carcinoma (HCC) can be classified according to the Barcelona Clinic Liver Cancer (BCLC) staging system. This classification system divides HCC patients in five stages (0, A, B, C and D) on the basis of a number of prognostic and treatment- related variables such as tumor status and liver function. A specific treat ment approach is then proposed for each of the above-mentioned stages. Transarterial chemoembolization (TACE) is recommended as first-line therapy in the treatment of patients with intermediate-stage (BCLC-B class) HCC [1]. The efficacy of this procedure…
Survival analysis of proposed BCLC-B subgroups in hepatocellular carcinoma patients
2013
Background & Aims The BCLC-staging system is used to facilitate treatment decisions in patients with hepatocellular carcinoma (HCC). Owing to the observed clinical heterogeneity of the intermediate stage BCLC-B, a subclassification was proposed taking Child–Pugh score and extended criteria for transplantation into account. Analysis of the prognostic significance of a proposed subclassification of the BCLC-B score in a European cohort of HCC patients. Methods Eight hundred and eighty four consecutive HCC patients were retrospectively analysed. Patients with stage BCLC-B were grouped according to the proposed subclassification. Baseline patient and tumour characteristics, therapy and overall …
Two large steps forward, one small step back
2018
In 2017, the FDA approved regorafenib and nivolumab for the treatment of patients with hepatocellular carcinoma following prior sorafenib treatment, opening the door for an effective systemic second-line therapy in advanced disease. By contrast, the addition of sorafenib to transarterial chemoembolization with drug-eluting beads did not improve progression-free survival in the intermediate disease stage.
Interim Analysis of Overall Survival Per Subgroups in the Prospective, Non-Interventional Insight Study in Patients with Hepatocellular Carcinoma Tre…
2012
ABSTRACT Background The efficacy of Sorafenib in patients (pts) with hepatocellular carcinoma (HCC) has been proven in randomized, controlled trials. INSIGHT is a prospective, non-interventional study, conducted in Germany and Austria in pts with HCC. The objectives of this study are the evaluation of safety and efficacy under practice conditions in both hospitals and private practices. Enrollment into INSIGHT is not restricted to a particular tumor stage. Recruitment into the study is ongoing. Methods The second interim analysis (data cut-off 23 FEB 2012) evaluated overall survival and safety data in relevant subgroups. All patients with HCC were observed for the duration of their sorafeni…
Final Analysis of Overall Survival Per Subgroups of Hcc Patients in the Prospective, Non-Interventional Insight Study Treated with Sorafenib
2014
ABSTRACT Aim: INSIGHT is a prospective, non-interventional study, conducted in Germany and Austria in pts with hepatocellular carcinoma HCC. The objectives of this study are the evaluation of safety and efficacy under practice conditions in both hospitals and private practices. Enrollment into INSIGHT is not restricted to a particular tumor stage. Methods: This final analysis evaluated overall survival and safety data incluling relevant subgroups. All patients with HCC were observed for the duration of their sorafenib therapy. In addition to baseline data the performance status, tumor status (clinical and/or radiological), and overall survival time are documented. Documentation of adverse e…