Search results for " Structures"
showing 10 items of 4162 documents
Deep learning enables robust assessment and selection of human blastocysts after in vitro fertilization
2019
AbstractVisual morphology assessment is routinely used for evaluating of embryo quality and selecting human blastocysts for transfer after in vitro fertilization (IVF). However, the assessment produces different results between embryologists and as a result, the success rate of IVF remains low. To overcome uncertainties in embryo quality, multiple embryos are often implanted resulting in undesired multiple pregnancies and complications. Unlike in other imaging fields, human embryology and IVF have not yet leveraged artificial intelligence (AI) for unbiased, automated embryo assessment. We postulated that an AI approach trained on thousands of embryos can reliably predict embryo quality with…
Revised Short Screening Version of the Profile of Mood States (POMS) From the German General Population
2021
The present study was conducted with the aim of constructing and validating a short form of the Profile of Mood States (POMS). The POMS is a widely-applied measure for the assessment of an individual's mood. Thus, it is of great relevance for many research questions in clinical and social psychology. To develop the short scale, we first examined psychometric properties and found the optimal 16-item solution among all valid combinations of the full POMS in an exploratory subsample (n = 1,029) of our complete representative sample of the German general population. We then validated this model in a confirmatory subsample (n = 977). Additionally, we examined its invariance across age groups and…
Antennal sensilla ofNeomysis integer (leach)
1978
The most frequent type of the hair sensilla on the antennae ofNeomysis integer is investigated by electron microscopic methods. The cellular properties of the sensilla are compared with those of other arthropods in order to detect possible homologies.
Supplementary methods and figures from Aging parasites produce offspring with poor fitness prospects
2017
A full description of the methods used to infect mice, to culture parasitic larvae, count parasite eggs and adult worms.
Luun morfogeneettisen proteiini 4:n kohdegeenien SKIL ja ID2 vaikutukset rintasyöpäsoluihin
2017
Rintasyöpä on johtava naisten syöpäkuolemien aiheuttaja maailmanlaajuisesti. Luun morfogeneettiset proteiinit (BMP) ovat tranformoiva kasvutekijä beta- superperheeseen kuuluvia proteiineja. BMP:den tiedetään olevan osallisina monissa syöpätyypeissä. Rintasyövässä BMP4:llä on merkittäviä vaikutuksia solukasvuun, liikkuvuuteen ja levinnäisyyteen. Aiempien tutkimusten mukaan BMP4:n on havaittu laskevan solukasvua merkittävästi rintasyöpäsoluilla. Tämän tutkimuksen kohteena oli kaksi BMP4:n kohdegeeniä, ID2 (Inhibitor of DNA binding 2) ja SKIL eli SKI-like proto-onkogeeni. Hypoteesina oli selvittää johtuuko BMP4:n vaikutukset solukasvuun ID2- tai SKIL-geenistä. BT-474 ja T-47D rintasyöpäsoluja …
Parental Involvement in Math Homework: Links to Children’s Performance and Motivation
2017
The present study examined the longitudinal associations between children’s perceptions of parental involvement in math homework (control and support) and their math performance and motivation (taskpersistent homework behavior and math self-concept). Children (n = 512) reported their perceptions concerning parental involvement in sixthgrade math homework. In grades 3 and 6, children completed math tests, evaluated own math self-concept, and their mothers (n = 420) evaluated task persistence during homework. The results showed that low selfconcept in math predicted increased parental control, which in turn related to low math performance, task persistence, and math selfconcept. Second, perce…
A Protein Nuclear Extract fromD. melanogasterLarval Tissues
2008
Preparation of protein nuclear extracts is often the first step to study in vitro biological processes occurring in the nucleus of the eukaryotic cell. Nuclear extracts have been extensively used in different model organisms to identify and study protein function in nuclei. Drosophila embryos can be collected in large quantities and have been the source of choice for the production of protein nuclear extracts. However, most of Drosophila in vivo studies on protein function are conducted in larval tissues. Here we report a new method to produce highly stable large-scale protein nuclear extracts from whole Drosophila larvae that are suited for a variety of biochemical analyses.
Computational investigations of 18-electron triatomic sulfur–nitrogen anions
2018
MRCI-SD/def2-QZVP and PBE0/def2-QZVP calculations have been employed for the analysis of geometries, stabilities, and bonding of isomers of the 18-electron anions N2S2−, NS2−, and NSO−. Isomers of the isoelectronic neutral molecules SO2, S2O, S3, and O3 are included for comparison. The sulfur-centered acyclic NSN2−, NSS−, and NSO− anions are the most stable isomers of their respective molecular compositions. However, the nitrogen-centered isomers SNS− and SNO− lie close enough in energy to their more stable counterparts to allow their occurrence. The experimental structural information, where available, is in good agreement with the optimized bond parameters. The bonding in all investigate…
Glaucoma and Antioxidants: Review and Update
2020
Glaucoma is a neurodegenerative disease characterised by the progressive degeneration of retinal ganglion cells. Oxidative stress has been related to the cell death in this disease. Theoretically, this deleterious consequence can be reduced by antioxidants substances. The aim of this review is to assemble the studies published in relation to antioxidant supplementation and its effects on glaucoma and to offer the reader an update on this field. With this purpose, we have included studies in animal models of glaucoma and clinical trials. Although there are variable results, supplementation with antioxidants in glaucoma may be a promising therapy in glaucoma.
On the suffix automaton with mismatches
2007
International audience; In this paper we focus on the construction of the minimal deterministic finite automaton S_k that recognizes the set of suffixes of a word w up to k errors. We present an algorithm that makes use of S_k in order to accept in an efficient way the language of all suffixes of w up to k errors in every window of size r, where r is the value of the repetition index of w. Moreover, we give some experimental results on some well-known words, like prefixes of Fibonacci and Thue-Morse words, and we make a conjecture on the size of the suffix automaton with mismatches.