Synthesis of a Large-Cavity Carbazole Macrocycle for Size-Dependent Recognition

A large-cavity carbazole macrocycle (1) is reported through condensation of a long and rigid monomer and paraformaldehyde. 1 exhibits highly selective binding of large-sized tetra(n-propyl) ammonium cation 3+. The complexation...

Brief communication: Thwaites Glacier cavity evolution

Between 2014 and 2017, ocean melt eroded a large cavity beneath and along the western margin of the fast-flowing core of Thwaites Glacier. Here we show that from 2017 to the end of 2020 the cavity persisted but did not expand. This behaviour, of melt concentrated at the grounding line within confined sub-shelf cavities, fits with prior observations and modelling studies. We also show that acceleration and thinning of Thwaites Glacier grounded ice continued, with an increase in speed of 400 m a−1 and a thinning rate of at least 1.5 m a−1, between 2012 and 2020.

Brief Communication: Thwaites Glacier cavity evolution

Between 2014 and 2017, ocean melt eroded a large cavity beneath and along the western margin of the fast-flowing core of Thwaites Glacier. Here we show that from 2017 to the end of 2020 the cavity persisted but did not expand. This behaviour, of melt concentrated at the grounding line within confined sub-shelf cavities, fits with prior observations and modelling studies. We also show that acceleration and thinning of Thwaites Glacier grounded ice continue, with an increase in speed of 400 ma−1 and a thinning rate of 1.5 ma−1, between 2012 and 2020.

Decompression drainage (marsupialization) in the treatment of extensive jaw cysts

Odontogenic cysts of the jaw are one of the most common diseases of the maxillofacial region, the main methods of treatment of which are cystotomy and cystectomy. Despite the widespread use of these surgical methods of treatment they are not without drawbacks. The presented clinical material shows the possibility of treating a patient with a large cavity formation of the jaw body by decompression drainage (marsupialization). The proposed surgical manual can be used either in isolation (the main method of treatment), or in combination with subsequent cystectomy. In modern domestic and foreign literature, publications devoted to this method of treatment of large and giant jaw cysts are rare, and therefore this clinical observation is presented.

Complex chest wall wound managed by a novel technique of thoracoplasty

Thoracoplasty is a procedure to collapse the chest wall over a residual space in the thoracic cavity in order to abolish and avoid the complications associated with this dead space. Although effective in achieving this, the procedure is crippled by poor cosmetic appearance and functional outcome. We report a case of recalcitrant complex chest wall defect with a large cavity, marred by visible heart and poor availability of local muscles, that was successfully managed by a novel technique of thoracoplasty with acceptable postoperative appearance and function.