FOLIAR AND STEM CHEMICAL CONTROL OF THE INVASIVE SPECIES AILANTHUS ALTISSIMA FROM PASTURES

The present paper presents the results of the chemical foliar control research of the species Ailanthus altissima. In the shrubs sprayed on the foliar apparatus, the effect was 100%, only where the solution reached the leaves, and in the tops of the trees where the solution did not spread, the leaves were not affected, having a normal vegetation. It should be noted that this method applied by spraying the foliar apparatus did not affect other shrubs in the vicinity, only the treated herbicide had an effect on those treated. In conclusion, the herbicide had its effect only where it came in contact with the leaves, the rest of the leaves not being affected. In those injected with a herbicide dose of 4 ml / cm in the diameter of the tree (15 cm in diameter corresponds to a dose of 60 ml pure herbicide) at a distance of 30 cm above the ground, the herbicide made its effect 100%, these shrubs drying completely. They were also affected, in addition to those injected a no. of 10 and 12 trees, respectively, on a perimeter of 10 m2, but not entirely, the foliar apparatus being affected 70-80% of the foliage and at the same time new shoots of approx. 30-40 cm long, and the tendency of herbicidal trees to regenerate after approx. 35 days

Treatment of congenital pseudarhrosis of tibia using axial bone graft on elastic splint, rh-BMP, compacted with cables and reconstructive plates

Emergency Hospital for Children MS Curie, Bucharest, Romania, Al VIII-lea Congres Naţional de Ortopedie și Traumatologie cu participare internaţională 12-14 octombrie 2016Introduction: given the recalcitrant behaviour of pseudarthrosis in congenital pseudarthrosis of tibia (CPT) there is no ideal solution to treat such challenging deformities. Reconsideration of already known principles using modern technology may generate new treatment methods. Material and methods: the present paper presents the preliminary results of an original reconstruction procedure described by Prof. Dr. Gh. Burnei to treat large bone defects in paediatric orthopaedics. A case series study, the surgical technique, complications and illustrative cases are presented. Results: 4 cases of 18 patients having CPT, surgically treated between 1997 and 2012, were operated using this technique. The principles of the method is to create an optimal osteoconductive and osteoinductive environment using bone autograft, bone allograft and bone graft substitutes and to provide a good stabilisation of the bones. The follow-up period of the study group ranged from 2 to 17 years. Three of the 4 patients are able to ambulate. Conclusion: we believe that the present technique could be a reliable alternative to other procedures, especially in cases of repeated failures

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements