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provides coniferyl ferulate(CAS#:64044-51-5) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
While the rare occurrence of child loss is accompanied by reduced life expectancy of parents in contemporary affluent populations, its impact in developing societies with high child mortality rates is unclear. We identified all parents in Iceland born 1800-1996 and compared the mortality rates of 47,711 parents who lost a child to those of their siblings (N = 126,342) who did not. The proportion of parents who experienced child loss decreased from 61.1% of those born 1800-1880 to 5.2% of those born after 1930. Child loss was consistently associated with increased rate of maternal, but not paternal, death before the age of 50 across all parent birth cohorts; the relative increase in maternal mortality rate ranged from 35% among mothers born 1800-1930 to 64% among mothers born after 1930. The loss of a child poses a threat to the survival of young mothers, even during periods of high infant mortality rates.
Research organism: Human
The mother’s risk of premature death after child loss across two centuries
Unnur A Valdimarsdottir,#1,2,3,† Donghao Lu,#1,2,3,4,† Sigrún H Lund,5 Katja Fall,3,6 Fang Fang,3 Þorður Kristjansson,5 Daniel Guðbjartsson,5,7 Agnar Helgason,#5,8,‡ and Kari Stefansson#5,9,‡ M Dawn Teare, Reviewing Editor and Eduardo Franco, Senior Editor M Dawn Teare, Newcastle University, United Kingdom; Contributor Information.
The solid-state structures of two metal-pyridine-sulfate compounds, namely catena-poly[[tetrakis(pyridine-κN)iron(II)]-μ-sulfato-κ2 O:O′], [Fe(SO4)(C5H5N)4]n, (1), and catena-poly[[tetrakis(pyridine-κN)cobalt(II)]-μ-sulfato-κ2 O:O′-[tetrakis(pyridine-κN)cobalt(II)]-μ-sulfato-κ3 O,O′:O′′-[tris(pyridine-κN)cobalt(II)]-μ-sulfato-κ2 O:O′], [Co3(SO4)3(C5H5N)11]n, (2), are reported. The iron compound (1) displays a polymeric structure, with infinite chains of FeII atoms adopting octahedral N4O2 coordination environments that involve four pyridine ligands and two bridging sulfate ligands. The cobalt compound (2) displays a polymeric structure, with infinite chains of CoII atoms. Two of the three Co centers have an octahedral N4O2 coordination environment that involves four pyridine ligands and two bridging sulfate ligands. The third Co center has an octahedral N3O3 coordination environment that involves three pyridine ligands, and two bridging sulfate ligands with one sulfate chelating the cobalt atom.
crystal structure, pyridine, sulfate, transition metals, crystal field theory, coordination chemistry
The crystal structures of iron and cobalt pyridine (py)-sulfates, [Fe(SO4)(py)4]n and [Co3(SO4)3(py)11]n
Duyen N. K. Pham,a Mrittika Roy,a Ava Kreider-Mueller,a James A. Golen,a and David R. Mankea,*
2018 Jun 1;
To evaluate the effectiveness of a Lexico-Syntactic Pattern (LSP) matching method for ontology enrichment using clinical documents.
Two domains were separately studied using the same methodology. We used radiology documents to enrich RadLex and pathology documents to enrich National Cancer Institute Thesaurus (NCIT). Several known LSPs were used for semantic knowledge extraction. We first retrieved all sentences that contained LSPs across two large clinical repositories, and examined the frequency of the LSPs. From this set, we randomly sampled LSP instances which were examined by human judges. We used a two-step method to determine the utility of these patterns for enrichment. In the first step, domain experts annotated Medically Meaningful Terms (MMTs) from each sentence within the LSP. In the second step, RadLex and NCIT curators evaluated how many of these MMTs could be added to the resource. To quantify the utility of this LSP method, we defined two evaluation metrics: Suggestion Rate (SR) and Acceptance Rate (AR). We used these measures to estimate the yield of concepts and relationships, for each of the two domains.
For NCIT, the concept SR was 24%, and the relationship SR was 65%. The concept AR was 21%, and the relationship AR was 14%. For RadLex, the concept SR was 37%, and the relationship SR was 55%. The concept AR was 11%, and the relationship AR was 44%.
The LSP matching method is an effective method for concept and concept relationship discovery in biomedical domains.
Ontology Learning from Text, Knowledge Acquisition, Ontology Enrichment, Natural Language Processing, Lexico-Syntactic Pattern
Effectiveness of Lexico-Syntactic Pattern Matching for Ontology Enrichment with Clinical Documents
K. Liu, MD, MS,1 W.W. Chapman, PhD,1,2 G. Savova, PhD,3 C.G. Chute, MD, Dr.PH,3 N. Sioutos, MD,4 and R.S. Crowley, MD, MS1,2,5
2011 Oct 25.