Acute recurrent pancreatitis during 3rd trimester of pregnancy.

Objective: We present an unusual case report of a pregnant patient with recurrent attacks of acute pancreatitis due to cholecystolithiasis.

Conclusion: Acute pancreatitis in pregnancy is a rare disease. Unlike the non-pregnant population, it is characterized by a high recurrence rate.

Crystal Structure and Thermoelectric Properties of Novel Quaternary CuMHfS (M-Mn, Fe, Co, and Ni) Thiospinels with Low Thermal Conductivity.

Uncovering of the origin of intrinsically low thermal conductivity in novel crystalline solids is among the main streams in modern thermoelectricity. Because of their earth-abundant nature and environmentally friendly content, Cu-based thiospinels are attractive functional semiconductors, including thermoelectric (TE) materials. Herein, we report the crystal structure, as well as electronic and TE properties of four new CuMHfS (M-Mn, Fe, Co, and Ni) thiospinels.

Phase Analysis and Thermoelectric Properties of Cu-Rich Tetrahedrite Prepared by Solvothermal Synthesis.

Because of the large Seebeck coefficient, low thermal conductivity, and earth-abundant nature of components, tetrahedrites are promising thermoelectric materials. DFT calculations reveal that the additional copper atoms in Cu-rich CuSbS tetrahedrite can effectively engineer the chemical potential towards high thermoelectric performance. Here, the Cu-rich tetrahedrite phase was prepared using a novel approach, which is based on the solvothermal method and piperazine serving both as solvent and reagent.

Entropy-Induced Multivalley Band Structures Improve Thermoelectric Performance in -CuP(SSe) Argyrodites.

Searching for novel low-cost and eco-friendly materials for energy conversion is a good way to provide widespread utilization of thermoelectric technologies. Herein, we report the thermal behavior, phase equilibria data, and thermoelectric properties for the promising argyrodite-based CuP(SSe) thermoelectrics. Alloying of CuPSe with CuPS provides a continuous solid solution over the whole compositional range, as shown in the proposed phase diagram for the CuPS-CuPSe system.

Thermoelectric properties of the tetrahedrite-tennantite solid solutions CuSbAsS and CuCoSbAsS (0 ≤ x, y ≤ 4).

Tetrahedrites, a class of copper- and sulfur-rich minerals, exhibit inherently very low lattice thermal conductivity and adjustable electronic properties that make them interesting candidates for thermoelectric applications. Here, we investigate the influence of isovalent As substitution on the Sb site on the structural and transport properties (5-700 K) of the two solid solutions Cu12Sb4-xAsxS13 and Cu10Co2Sb4-yAsyS13 (0 ≤ x, y ≤ 4). Electronic band structure calculations predict that As has only a weak influence on the valence bands and hence, on the p-type metallic character of Cu12Sb4S13.