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Now available on Fast Track: Oganesson: a most unusual ‘inert gas’

Posted on 18. May, 2018.

Oganesson, with the symbol Og, is the artificially prepared (i.e. ‘man-made’) elementwith atomic number 118, previously known as eka-radon or Uuo (‘ununoctium’), and recently ‘blessed’ with an official name by IUPAC3. Atoms of the element were first produced using the U400 cyclotron at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, via a heavy-ion fusion reaction utilising collision of a 4820Ca beam with a 24998Cf target. 

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Contents: Journal of Chemical Research , Volume 42, Issue No.4 April 2018

Posted on 17. May, 2018.

The Journal of Chemical Research is a monthly journal which has a broad international authorship and publishes research papers and reviews in all branches of experimental chemistry. Established in 1977 as a joint venture by the British, French and German chemical societies it maintains the high standards set by the founding societies.

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Nuclease activity of diaza-crown ether complexes of cerium(III) with different functional groups as side arms

Posted on 15. May, 2018.

Cerium(III) complexes of two ligands of a diaza-crown ether with different functional groups as side arms were synthesised and characterised. The catalytic ability of the cerium(III) complexes for pUC19 DNA cleavage was investigated and compared using agarose gel electrophoresis. 

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Effect of variation in nestling hunger levels on the begging behaviour of nestlings and the provisioning behaviour of adult American Kestrels

Posted on 14. May, 2018.

Little is known about how variation in nestling begging intensity influences the behaviour of adult raptors and how responses of adult males and females to such variation might differ. Our objective was to manipulate the begging intensity of nestling American Kestrels (Falco sparverius) and examine the responses of adults. 

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Current Commentary: Roman concrete for durable, eco-friendly construction – applications for tidal power generation, and protection against sea level rise

Posted on 9. May, 2018.

A recent study has provided further insight into the cause of the remarkable durability of Roman concrete. As is stressed in the paper, the Ancient Romans were well aware of the robustness of their concrete, which they named opus caementicium.

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Effect of reactivity on kinetics and a mechanistic investigation of the reaction between dimethyl acetylenedicarboxylate and 1,3-dicarbonyl compounds in the presence of a catalyst: a spectrophotometric approach

Posted on 7. May, 2018.

A kinetic and mechanistic investigation, using conventional UV-Vis spectrophotometry, of the reaction between dimethyl acetylenedicarboxylate (DMAD) and 1,3-dicarbonyl compounds including acetylacetone (ACAC) and dibenzoylmethane (DBM), has been conducted in a methanol environment with triphenylarsine (TPA) acting as a catalyst. 

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Now available on Fast Track: Composition of bird nests is a species-specific characteristic

Posted on 4. May, 2018.

Bird nests represent an extended phenotype of individuals expressed during reproduction and so exhibit variability in  composition, structure and function. Descriptions of nests based on qualitative observations suggest that there is interspecific variation in size and composition but there are very few species in which this has been confirmed. For these species, data of the amounts of different materials indicate that nest construction behaviour is plastic and affected by a variety of factors, such as prevailing temperature, geographic location, and availability of materials. 

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Current Commentary: Doing away with variables

Posted on 3. May, 2018.

In primary school we do our sums, and these involve much more than just addition: there is also subtraction, ultiplication, and long division to be reckoned with. But it is always a numbers game, until a friendly teenager shows us their homework, in which the sums involve letters. 

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Now available on Fast Track: Testis size and asymmetry in the Guinea Fowl (Numida meleagris): a test of the compensation hypothesis

Posted on 2. May, 2018.

Despite numerous studies on testicular asymmetry in birds, there are still inconsistent reports on the pattern of asymmetry in species belonging to various phylogenetic groups and exhibiting diverse lifestyles. In addition, there is a lack of clarity on whether functional differences exist between the left and right testes despite differences in size, as well as no evidence of naturally occurring compensation in testis size in terrestrial and galliform birds. 

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