Evacuations as Gran Canaria hit by new blaze
Authorities in the Spanish island of Gran Canaria were evacuating a luxury hotel and tourist spot on Saturday as a new forest fire broke out just days after another blaze raged in the same area. …read more
Source:: Physorg Latest
Wildlife summit mulls trade rules to counter ‘unprecedented’ species declines
Conservationists warned of “unprecedented” species declines Saturday as countries met in Geneva to tighten rules on trade in elephant ivory and products from other endangered animal and plants. …read more
Source:: Physorg Latest
Mussels, ‘super-filters’ that can help beat water pollution
Seafood lovers who prize the mussel for its earthy taste and succulent flesh may be unaware of its growing potential in the fight against water pollution. …read more
Source:: Physorg Latest
National lab details $13B in building plans over next decade
Officials at Los Alamos National Laboratory have plans for $13 billion worth of construction projects over the next decade at the northern New Mexico complex as it prepares to ramp up production of plutonium cores for the nation’s nuclear weapons arsenal. …read more
Source:: Physorg Latest
Iceland commemorates first glacier lost to climate change
Iceland on Sunday honours the passing of Okjokull, its first glacier lost to climate change, as scientists warn that some 400 others on the subarctic island risk the same fate. …read more
Source:: Physorg Latest
Zinc Substitution of Cobalt in Vitamin B12 ‐ Zincobyric Acid and Zincobalamin as Luminescent Structural B12‐Mimics
Replacing the central cobalt ion of vitamin B12 by other metals has been a long‐held aspiration within the B12‐field. Herein, we describe the synthesis from hydrogenobyric acid of zincobyric acid (Znby) and zincobalamin (Znbl), the Zn‐analogs of the natural cobalt‐corrins cobyric acid and vitamin B12, respectively. The solution structures of Znby and Znbl were studied by NMR‐spectroscopy. Single crystals of Znby were produced, providing the first X‐ray crystallographic structure of a zinc corrin. The structures of Znby and of computationally generated Znbl were found to resemble the corresponding Co(II)‐corrins, making such Zn‐corrins potentially useful for investigations of B12‐dependent processes. The singlet excited state of Znby had a short life‐time, limited by rapid intersystem crossing to the triplet state. Znby allowed the unprecedented observation of a corrin triplet (ET = 190 kJ/mol) and was found to be an excellent photo‐sensitizer for 1O2 (ΦΔ = 0.70).
Source:: Angewandte Chemie Int. edition
From tusks to tails, nations eye trade in endangered species
Representatives of more than 180 nations are meeting to agree on protections for vulnerable species, taking up issues such as the trade in ivory and the demand for shark fin soup that is decimating shark populations. …read more
Source:: Physorg Latest
Beloved baby dugong ‘Mariam’ dies in Thailand with plastic in stomach
A sick baby dugong whose fight for recovery won hearts in Thailand and cast a spotlight on ocean conservation has died from an infection exacerbated by bits of plastic lining her stomach, officials said Saturday. …read more
Source:: Physorg Latest
Tokyo 2020 paratriathlon test shortened due to bad water quality
The swimming section of a paratriathlon test event for Tokyo 2020 was cancelled Saturday due to high levels of bacteria in the water, the latest in a series of difficulties over water quality and temperature. …read more
Source:: Physorg Latest
How stress can curb the desire to eat in an animal model
Eating disorder researchers have discovered a neurocircuit in mice that, when activated, increased their stress levels while decreasing their desire to eat. …read more
Source:: Sciencedaily
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