Search

The results of theoretical and experimental comparison of the signal-conversion efficiency by diodes based on superlattices with a small number of periods (N-like current–voltage characteristic) and promising frequency-multiplier diodes (varactors) (parabolic capacitance–voltage characteristic) are presented. [ABSTRACT FROM AUTHOR]

The article discusses the contested history of the Latvian Waffen Schutzstaffel (SS) Legion, with particular focus on debates over its classification as a criminal group by the International Military Tribunal at Nuremberg. According to the author, statements made in 1998 and 2011 by the Latvian government suggesting that the legion existed only to protect against Stalinist incursions and did not participate in actions against civilians are false and constitute an attempt to change history. Details related to volunteers with the Latvian SS legion and its participation in the Jewish Holocaust of 1939 to 1945 are presented. Other topics include war crimes, possibilities for evading mobilization into the legion, and the 14th and 18th Waffen SS Divisions.

The article presents discussion of historical politics and the politicization of history, particularly in relation to international questions of sovereignty and borders near the former Soviet Union. The author highlights several claims by organizations and institutions in nations such as Japan, Estonia and Latvia concerning historical injustices and criticizes the application of contemporary political issues into the reading of history and "memory." It is asserted that such historical institutions are both dangerous and illegitimate within the field of political history.

The article presents a study on the effects of chemical factors on the efficiency of insulin fibrillogenesis in vitro and the morphology of fibrils. It explores the assessment of the effects of various chemical elements on insulin fibrillogenesis by incubation of insulin solution. Moreover, comparison of and insulin B-chain polypeptide, suggests a common strategy of suppression applicable for preventing insulin aggregation and other protein-associated disorder.

Based on the local interaction theory, a comparative analysis has been made of the force of resistance in penetration of rocky soil barriers by nondeformable strikers with conical and ogival noses. Normal stresses on the surface of the striker nose contacting the barrier were assumed in the form of a quadratic dependence on a striker velocity that is normal to the vector component surface, while tangential stresses were determined on the basis of the dry friction law. In conducting the analysis, use was made of the nose shape coefficients describing the contribution to the total force of resistance by the summands depending on the striker velocity raised to zero, first, and second powers. For strikers with an ogival nose, an assessment was made of a possible influence on the resistance force exerted by the effect of the barrier material separation from the nose surface. [ABSTRACT FROM AUTHOR]