Magnesium cations as templates for the self-assembly of supramolecular luminescent {Mg@[Bφ]}-clusters.

Solvothermal reaction of magnesium nitrate and boron oxide in ,-dimethylformamide produced a number of particularly complex supramolecular magnesium borates. Five topologically different types of negatively charged {Mg@[Bφ]}-clusters, φ = O, OH, were observed with the magnesium cation as a core and octadecaborate anions as shells. The clusters assemble common borate polyhedra forming 1D chains, a 2D mesoporous layer, and 3D mesoporous frameworks with an effective channel width of up to 16 Å.

The intrinsic twinning and enigmatic twisting of aragonite crystals.

It is generally accepted that aragonite crystals of biogenic origin are characterized by significantly higher twin densities compared to samples formed during geological processes. Based on our single crystal X-ray diffraction (SCXRD) and transmission electron microscopy (TEM) study of aragonite crystals from various localities, we show that in geological aragonites, the twin densities are comparable to those of the samples from crossed lamellar zones of molluscs shells. The high twin density is consistent with performed calculations, according to which the Gibbs free energy of twin-free aragonite is close to that of periodically twinned aragonite structure.

The AM-4 Family of Layered Titanosilicates: Single-Crystal-to-Single-Crystal Transformation, Synthesis and Ionic Conductivity.

Flexible crystal() structures, which exhibit() single-crystal()-to-single-crystal() (SCSC) transformations(), are attracting attention() in many applied aspects: magnetic() switches, catalysis, ferroelectrics and sorption. Acid treatment() for titanosilicate material() AM-4 and natural() compounds with the same structures led to SCSC transformation() by loss() Na, Li and Zn cations with large structural() changes (20% of the unit()-cell() volume()). The conservation() of crystallinity through complex() transformation() is possible due() to the formation() of a strong hydrogen bonding() system().

[The comparative analysis of surgical procedures a in patients with benign prostatic hyperplasia and type 2 diabetes mellitus].

Aim: To compare the efficiency of two surgical methods, holmium laser enucleation of prostate (HoLEP) and laparoscopic retropubic simple prostatectomy with clamping of internal iliac arteries and vesicourethral anastomosis [LPA+CIIA+VUA]) for treating of patients with benign prostatic hyperplasia (BPH) and type 2 diabetes mellitus (T2DM).

Materials And Methods: A total of 56 men with T2DM who underwent surgical treatment of BPH in the National Research Centre for Endocrinology of the Russian Ministry of Health (director - corresponding member of RAS Mokrysheva N.G.

Measurements of jet multiplicity and jet transverse momentum in multijet events in proton-proton collisions at .

Multijet events at large transverse momentum () are measured at using data recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of . The multiplicity of jets with that are produced in association with a high- dijet system is measured in various ranges of the of the jet with the highest transverse momentum and as a function of the azimuthal angle difference between the two highest jets in the dijet system. The differential production cross sections are measured as a function of the transverse momenta of the four highest jets.