Structure and meaning

Stone moroko (Pseudorasbora parva) is considered to be one of the most invasive fishes, dispersing rapidly all over Europe and also in the freshwaters of the Baltic Sea basin. A recent survey carried out in the catchment of the lower part of the Odra River (Poland) in 2015 and 2016 revealed a large new population of stone moroko, which had colonized the creek Wardynka.

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The SIAR model, on the other hand, identified fishes, fish eggs, and invertebrates with mean contributions of 35%, 30%, and 16%, respectively. Invertebrates were also an important food source for S. lucioperca during this season according to Bugalho et al. (2008). In conclusion, this study showed that S. lucioperca shifted its diet from invertebrates, including crayfish, during spring, to fishes during autumn, a result also supported by the increase in the trophic position of S. lucioperca from spring to the autumn. This study is the first to report results on the food content of S.

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Two series of 6-arylazothiazol[2,3-c][1,2,4]triazoles were prepared via oxidative cyclization of the respective aldehyde N-(5-arylazo-4-methylthiazol-2-yl)-hydrazones. The structures of the latter hydrazone precursors and the azo compounds were confirmed by spectral and elemental analyses. The solvatochromism of the title azo dyes is evaluated by means of the Kamlet–Taft equation and discussed.

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The system reached equilibrium at around 0.1 µs. The overall 3-dimensional structure was well preserved throughout the simulation. Local residue-based fluctuations were in good agreement with fully atomistic MD simulations. Four distinct snapshots were selected and reverse-mapped to all-atom representations with around 65,000 atoms. Each reverse-mapped system was later subjected to 100 ns of MD simulation for equilibration.

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NH acidities of some 3-(p-substitutedphenyl)-1,2,4-oxadiazol-5(4H) -ones and 4-(p-substitutedphenyl)-1,2 λ43,5-oxathiadiazole 2-oxides were determined in methanol by means of potentiometric titration with sodium methoxide. pKa values of the title compounds calculated from the potentiometric data were interpreted on the basis of structural effects caused by para-substituted groups on the phenyl ring by plotting pKa values versus Hammett σ + p constants, which gave excellent linear correlations.

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New phthalocyanine compounds containing mixed-donor substituted macrocyclic groups were synthesized. The complexes of metal phthalocyanines 3–5 were prepared by the reaction of 2 to get dinitrile derivative complexes by means of the corresponding anhydrous metal salts. Structures of the new compounds were characterized by IR, 1H NMR, 13C NMR, elemental analysis, and MS spectral data.

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1,3-Dipolar cycloaddition of 5-azidomethyl-3-p-substituted phenyl-1,2,4-oxadiazoles to phenyl vinyl sulfone and bismaleimide gives rise straightforwardly to 1-((3-(p-substituted) phenyl-1,2,4-oxadiazol-5-yl)methyl)-4-(phenylsulfonyl)-4,5-dihydro-1H-1,2,3-triazoles and bisdihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-diones. The structures of the new cycloadducts were elucidated by means of IR, NMR (1H, 13C, 2D), mass spectra, and physical characteristics (mp and Rf values). In addition, anticancer activities of the cycloadducts against MCF-7 cells were also investigated.

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A series of pyrazolidinium ylides was reacted with benzothiophene 1,1-dioxide to afford (3R,5S,5aS,10bS)-3- methyl-5-substitutedphenyl-2,3,5,5a-tetrahydrobenzo[4,5]thieno[3,2-c]pyrazolo[1,2-a]pyrazol-1(10bH )-one 6,6-dioxides under microwave irradiation and their structures were identified by means of spectral/physical characteristics including X-ray diffraction data and HRMS measurements.

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A series of new nickel(II) and copper(II) hydrazone complexes 1–14, containing a bidentate NO-donor hydrazone ligand, derived from 4-nitrobenzoylhydrazide and several aliphatic and aromatic aldehydes were synthesized, and their chemical structures were confirmed by means of FT-IR, UV-Vis, 1 H and 13 C NMR, mass spectral data, conductance measurements, and elemental analyses. The spectral data of the newly synthesized complexes show the formation of a 1:2 [metal:ligand] ratio.

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A series of 1,4-phenylene-bis-chalcones 3a–3h were synthesized by the reaction of terephthalaldehyde with substituted arylketones in this study. The novel 1,4-phenylene-bis-pyrimidine-2-amine derivatives 5a–5h were obtained by the addition of guanidine hydrochloride to 1,4-phenylene-bis-chalcone 3a–3h in ethanolic KOH under reflux conditions. The structure of the compounds was explained by means of IR, 1H NMR, 13C NMR, and elemental analyses. The anticancer activities of 3a–3h and 5a–5h were investigated against rat brain tumor cells and human uterus carcinoma in vitro.

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Origami-inspired structures and mechanical metamaterials are often made up of individual tessellating repeat units, the folding and relative geometry of which determine the overall mechanical properties. If these units are identical, then the mechanical behaviour of the structure is uniform throughout, meaning that it is not able to adapt to changeable loading conditions.

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In this study, the mean nearest neighbor distance between two atoms, the Helmholtz free energy and characteristic quantities for elastic deformation such as elastic moduli E, G, K and elastic constants C11, C12, C44 for binary interstitial alloys with FCC structure under pressure are derived with the statistical moment method.

12p meyerowitz 25-12-2021 1 0   Download

Lecture Making hard decisions with the decision tool suite (3e) - Chapter 3: Structuring decisions. After completing this section, you will understand the knowledge about structuring values and objectives, fundamental and means objectives, getting the decision context right, influence diagrams, decision trees, various decision details, creating measurement scales,...

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Medicago ciliaris (L.) Krock and Medicago intertexta (L.) Mill are most often found in saline regions and are considered as potential resources for genes related to salinity resistance. To explore the genetic diversity of these two species by mean of nrSSR (simplesequence repeats) markers, 11 accessions originated from different regions in north of Africa and Middle East were chosen. Ten among 14 markers turned out to be polymorphic and gave 72 alleles. Eight markers were very informative with PIC values > 0.5, and three of them were found to be nonneutral.

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A spreadsheet dealing with standard deviations allows statistical examination of continuous variables associated with paraphyly in systematics, with examples in the Pottiaceae (Bryophyta). Outlier values in taxonomic representation of distribution with the structure of (w–)x–y(–z) of continuous variables can be empirically supported. The use of the geometric mean and intuitional estimation is reexamined. Published reports of the distance between maximally distant exemplars of individual paraphyletic species in molecular cladograms in several studies were reevaluated as metadata.

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Periodic structural health survey is very crucial to guarantee the safety and serviceability of civil engineering structures. This study aims at developing a computer vision tool to detect defects on surface of civil engineering structures by means of Gaussian steerable filters. This tool has been developed with Visual C#. NET to facilitate its implementations. The developed software programs have been tested with images containing various defects such as crack, pothole, and spalling.

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Orobanche cumana is a parasitic plant that can lead to advanced losses in yield of agricultural lands cultivating sunflower, depending on the sunflower varieties and the level of contamination. In our study, genetic diversity of six O. cumana populations from the Thrace region of Turkey was determined with the help of eight SSR (microsatellite) loci. All SSR loci were polymorphic. A total of 23 alleles were determined for the analyzed 120 samples. Allele number of each SSR locus ranged from two to six. Mean number of alleles (Na = 2.271), effective allele number (Ne = 1.

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The present study reports the efficient synthesis and computational studies of the structural and electronic properties of some interesting substituted phenol derivatives. Efficient and versatile procedures to synthesize a series of diaryl ether derivatives (2a–2c, 4a–4h) and bis-arylated products (5a–5c) are described.

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Phenoxy- and naphthoxy-substituted bisphenol-bridged cyclic phosphazenes were synthesized in 2 steps and their thermal, photophysical, and electrochemical properties were investigated. The structures of the cyclic phosphazene compounds were determined by ESI-MS mass spectrometry and 1 H, 13 C, and 31P NMR spectroscopies. The photophysical studies of phenoxy- and naphthoxy-substituted bridged cyclophosphazenes were investigated by means of absorption and fluorescence spectroscopies in different solvents. Thermal and electrochemical properties of the target compounds were also studied.

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The results of this study are aimed at analyzing the outcomes of using problembased learning in managing teaching and learning for university students who registered to study for Term 1/2561, Subject 896-439 “Words and Meanings” 3(3-0- 6), Faculty of Liberal Arts, Prince of Songkla University, Hat Yai Campus, including 51 students altogether.

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