Search results for "Heterogeneous group"
showing 10 items of 20 documents
‘Synaptic’ Bodies in the Pineal Glands of the Cow, Sheep and Pig
1990
The present results show that ‘synaptic’ bodies (SB) are a heterogeneous group of organelles in the pineal glands of Artiodactyla. Basically, rod-like (ribbons) and sphere-like (spherules) SB can be distinguished. In the pig small numbers of both ‘synaptic’ ribbons (SR) and ‘synaptic’ spherules (SS) are found. In bovine and ovine pineal glands few SS but no SR were seen. The same results were obtained from animals of the same species but from different continents. This suggests that the numbers of SB are species specific rather than influenced by the different lighting conditions in Europe and in equatorial Africa.
A Multilevel Analysis of Economic Literacy Among International Students
2021
International student mobility has increased in the past years. The inclusion of a highly heterogeneous group of students requires updated recruitment and admission strategies. A particularly vulnerable group of international students are refugees, who have an exceptionally high risk of dropping out of their studies. We present an entrance assessment of incoming international students from 77 countries who are at the beginning of their studies in Germany. Based on this unique sample, we examine (i) whether there are systematic country-specific effects on the economic literacy of beginning students of business and economics and (ii) whether refugee students differ from the group of internati…
Expression of selected molecular factors in two types of endometrial cancer
2021
BACKGROUND Endometrial cancers (EC) are a heterogeneous group of malignant neoplasms differing in etiology, clinical-pathological features and prognosis. OBJECTIVES To determine the differences between the expression of selected molecular factors and find connections between them in order to isolate possible biomarkers influencing treatment options. MATERIAL AND METHODS The investigated data involved archival histological preparations obtained from uterine EC samples taken from 137 patients, treated surgically between 2007 and 2014. The immunohistochemical Dako EnVisionTM Flex+ method was applied. RESULTS The expression of ERβ, MLH1 and BRCA1 was lower in ECI than in ECII patients. The ERα …
A nonlinear mixed model approach to predict energy expenditure from heart rate.
2021
Abstract Objective. Heart rate (HR) monitoring provides a convenient and inexpensive way to predict energy expenditure (EE) during physical activity. However, there is a lot of variation among individuals in the EE-HR relationship, which should be taken into account in predictions. The objective is to develop a model that allows the prediction of EE based on HR as accurately as possible and allows an improvement of the prediction using calibration measurements from the target individual. Approach. We propose a nonlinear (logistic) mixed model for EE and HR measurements and an approach to calibrate the model for a new person who does not belong to the dataset used to estimate the model. The …
Classification of Brain Tumors
1989
In 1914, L. Bruns stated in Krause’s General Surgery of Brain Disorders that brain tumors include all neoplasias growing within the cranium and that they comprise three groups: (1) true tumors, (2) infectious granulomas, and (3) parasites. Current usage is more precise and is limited to the first of Bruns’ categories. Even so, brain tumors constitute a large and very heterogeneous group. A taxonomic approach to classification is necessary if we are to make sense of an initially disorganized set of observations, compare the findings of different observers, and attempt a prognostic evaluation.
Neuroendocrine Neoplasms (NENs)
2021
Neuroendocrine neoplasms (NENs) represent a rare and heterogeneous group of malignancies which can develop in many different sites of our body. They originate from the cells of the diffuse neuroendocrine system. Gastroenteropancreatic NENs were classified in four categories, including NETs G1 (WD with 20% Ki-67), and NECs (PD with >20% Ki-67) in accordance with the 2019 WHO classification (IARC WHO Classification of the digestive system tumors, on 11th July 2019). Lung NENs, in accordance with the latest WHO classification, 2015 edition, are distinguished in small cell lung cancer (SCLC), large cell neuroendocrine carcinoma (LCNEC), atypical carcinoid (AC), and typical carcinoid (TC).
Immunobiology of normal and diabetic pregnancy
1990
The International Congress of Immunobiology of Normal and Diabetic Pregnancy brought together a heterogeneous group of workers to consider one of the most fascinating areas of immunology. The meeting, which proved to be a thinkshop as much as a workshop, developed along two major lines: (1) an examination of new data in normal pregnancy immunology, from both the research and clinical points of view and (2) analysis of the suspected problems of diabetic pregnancy. 'Suspected' because pregnancy-related problems in diabetic women are not due solely to metabolic disturbances, but also involve immunological aspects of diabetes, particularly where type I diabetes is concerned.
How much space for communication is there for a low achieving student in a heterogeneous group ?
2015
International audience; This paper reports on a case study aiming to deepen our understanding of low achieving students' learning of algebra, in particular when they work with pattern problems. We observed one low achieving student, May, who participated and worked in three different heterogeneous settings. Data were analysed from a multimod-al perspective on key and regulating activities in the groups. The analysis revealed that May's contribution varied, depending on the composition of the groups, and that her contributions were influenced by regulating activities by peers and access to physical artefacts. The findings show that a low achieving student is able to generalise beyond her ari…
Lasītprasmes apguve etniski un lingvistiski heterogēnā pirmsskolas grupā
2021
Kvalifikācijas darba „Lasītprasmes apguve etniski un lingvistiski heterogēnā pirmsskolas grupā” mērķis ir pētīt un analizēt lasītprasmes apguves procesu etniski lingvistiski heterogēnas grupās pirmssskolā un apkopot pētījuma rezultātus. Pētījumam ir divas daļas. Pirmajā daļā analizēta teorētiskā literatūra par lasītprasmes jēdzienu, saturu un metodiku pirmsskolā. Otrajā daļā aprakstīti lasītprasmes apguves etniski un lingvistiski heterogēnās grupās empīriskā pētījuma rezultāti. Darba nobeigumā ir secinājumi, izmantotās literatūras saraksts, kā arī pielikums, kurā ievietota anketa skolotājiem. Analizējot pētījuma rezultātus, secināts, ka jaunākajās grupās māca skolotāji ar mazāku darba stāžu…
Consensus on nomenclature for clinical staging models in bipolar disorder: A narrative review from the International Society for Bipolar Disorders (I…
2021
Objectives Clinical staging is widely used in medicine to map disease progression, inform prognosis and guide treatment decisions; in psychiatry, however, staging remains a hypothetical construct. To facilitate future research in bipolar disorders (BD), a well-defined nomenclature is needed, especially since diagnosis is often imprecise with blurred boundaries, and a full understanding of pathophysiology is lacking. Methods Under the auspices of the International Society of Bipolar Disorders, a Task Force of international experts was convened to review, discuss, and integrate findings from the scientific literature relevant to the development of a consensus staging model and standardize a t…