840 research outputs found
[μ-N,N′-Bis(3-methoxy-2-oxidobenzylidene)propane-1,3-diamine]trinitratocopper(II)terbium(III) acetone solvate
In the title complex, [CuTb(C19H20N2O4)(NO3)3]·CH3COCH3, the CuII atom is four-coordinated by two O atoms and two N atoms from the deprotonated Schiff base in a square-planar geometry, while the TbIII atom is ten-coordinated by four O atoms from the deprotonated Schiff base and six O atoms from three bidentate nitrate anions. The compound is isostructural with the previously reported GdIII analogue [Elmali & Elerman (2004 ▶). Z. Naturforsch. Teil B, 59, 535–540], which was described in the space group P1 with two formula units in the asymmetric unit. The crystal stucture is, in fact, centrosymmetric and is described here in the space group P
with one formula unit in the asymmetric unit
THE UNBEARABLE LIGHTNESS OF GLASS: TRANSPARENT ARCHITECTURE
The heaviness or lightness effect of a building that left to the user changes according to some different features such as its form, relation to topography, structure, fullness-emptiness rate of mass,organization and etc. The organization which gives the best lightness effect is transparency that is provided both with fullness-emptiness and material. The most valid material of transparency thatprovides lightness effect on the perception of façade is glass. Glass which made progress parallel to the development of technology in modern period turns into the skin of building now. In this studyfirstly, the development process of building façades on the basis of material from past to present –from heavy to light- is discussed. Then, the glass buildings that built in both new and historicalenvironments are evaluated in terms of the heavy-light effect
{μ-6,6′-Dimethoxy-2,2′-[propane-1,3-diylbis(nitrilomethylidyne)]diphenolato}trinitratocopper(II)samarium(III) acetone solvate
In the title complex, [CuSm(C19H20N2O4)(NO3)3]·CH3CO-CH3, the CuII atom is four-coordinated in a square-planar geometry by two O atoms and two N atoms of the deprotonated Schiff base. The SmIII atom is ten-coordinate, chelated by three nitrate groups and linked to the four O atoms of the deprotonated Schiff base
{μ-6,6′-Dimethoxy-2,2-[propane-1,3-diylbis(nitrilomethanylylidene)]diphenolato}trinitratocopper(II)dysprosium(III) methanol monosolvate
In the title heterodinuclear salen-type complex, [CuDy(C19H20N2O4)(NO3)3]·CH3OH, the copper(II) ion is tetracoordinated by two imino N atoms [Cu—N = 1.961 (4) and 1.968 (4) Å] and two phenolate O atoms [Cu—O = 1.931 (3) and 1.938 (3) Å] in a planar geometry. The ten-coordinate DyIII ion is ligated by six O atoms of three nitrate groups and four O atoms from the ligand [Dy—O = 2.368 (3)–2.601 (3) Å]. In the crystal, complex molecules and solvent molecules are linked by intermolecular O—H⋯O hydrogen bonds
Relationship between acute phase reactants and prognosis in patients with or without COVID-19 pneumonia
In December 2019, several cases of pneumonia of unknown origin were reported in the city of Wuhan, province of Hubei, China. The pathogen was named as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the disease was named coronavirus disease 2019 (COVID-19). Acute phase reactans (APRs) are critical in the early diagnosis, treatment, and for monitoring the progression of COVID-19. Seventy two patients were included in the study and infections confirmed by real-time reverse transcription polymerase chain reaction. Clinical parameters, the level of APFs and D-dimer were assessed and results were retrived from the patients’ medical records. Chest computed tomography (CT) findings were described for each patient and they were divided into two groups, with or without COVID-19 pneumonia. The correlation between APRs and CT findings and the patients’ prognosis were evaluated. Twenty eight (38.8%) of the 72 patients were female and 44 (61.2%) were male. The most common symptom was cough (43%) and the most common associated chronic disease was hypertension (12.5%). Thirty (41.6%) patients had completely normal chest CT, while 42 (58.4%) patients had typical findings in terms of COVID-19 pneumonia. C reactive protein (CRP), lactate dehydrogenase (LDH), erythrocyte sedimentation rate (ESR), ferritin, procalcitonin and D-Dimer levels were statistically significantly higher in patients with pneumonia than in those without pneumonia and these parameters were also statistically significantly higher in patients with severe illness. In conclusion, CRP, LDH, ESR, ferritin, and D-Dimer were associated with severe COVID-19 pneumonia. These biomarkers can be used to evaluate the prognosis to predict the clinical course of disease, allowing a proper management and treatment of the patients
Anthropometric Evaluation of the Crèches Children Furniture in Turkey
The dimensions of the living and working space and buildings, the types of material and different riggings should be
designed to conform to the users’ anthropometric measures. The first requirement to design on ergonomic system is to
measure the human being who will work and live in that system. Because of this, anthropometric measures are the most
frequently used ergonomic data during the design process. In this research paper, we attempt to organize a new data base
of anthropometric data to use in the design of children’s equipment and furniture used in crèches. A starting point for research
on the proper dimensions of crèche furniture is to investigate how the dimensions of furniture reflect the body dimensions
and the functional needs of the children using furniture. The anthropometric data of 3, 4 and 5 year-old-children
in crèches was used. We report the results of the measurements of 18 anthropometric characteristics of children
which constitute a set of basic data for the design of functional spaces and furniture
Femtosecond laser crystallization of amorphous Ge
Cataloged from PDF version of article.Ultrafast crystallization of amorphous germanium (a-Ge) in ambient has been studied. Plasma enhanced chemical vapor deposition grown a-Ge was irradiated with single femtosecond laser pulses of various durations with a range of fluences from below melting to above ablation threshold. Extensive use of Raman scattering has been employed to determine post solidification features aided by scanning electron microscopy and atomic force microscopy measurements. Linewidth of the Ge optic phonon at 300 cm(-1) as a function of laser fluence provides a signature for the crystallization of a-Ge. Various crystallization regimes including nanostructures in the form of nanospheres have been identified. (C) 2011 American Institute of Physics. [doi:10.1063/1.3601356
{4,4′,5,5′-Tetramethyl-2,2′-[1,1′-(ethane-1,2-diyldinitrilo)diethylidyne]diphenolato}nickel(II)–methanol–chloroform (1/1/1)
In the title compound, [Ni(C22H26N2O2)]·CH3OH·CHCl3, the NiII ion is in a slightly distorted square-planar geometry involving an N2O2 atom set of the tetradentate Schiff base ligand. The asymmetric unit contains one molecule of the complex and one molecule each of chloroform and methanol. The methanol molecule is hydrogen bonded to the phenolate O atoms. In the crystal structure, short intermolecular distances between the centroids of six-membered chelate rings [3.7002 (9) Å] indicate the presence of π–π interactions, which link the molecules into stacks along the a axis. In addition, there are Ni⋯Ni distances which are shorter than the sum of the van der Waals radii of two Ni atoms. The crystal structure is further stabilized by intermolecular O—H⋯O and C—H⋯O hydrogen bonds, and weak intermolecular C—H⋯π interactions linking molecules into extended one-dimensional chains along the c axis
4-Methyl-2-[(E)-phenyl(1,2,3,4-tetrahydro-1-naphthylimino)methyl]phenol
In the crystal structure of the title compound, C24H23NO, the phenyl ring makes dihedral angles of 81.53 (11) and 75.35 (12)°, respectively, with the methyl-substituted and the fused benzene rings. The dihedral angle between the two benzene rings is 71.10 (10)°. There is an intramolecular O—H⋯N hydrogen bond
- …