The emergence of chirality in enantioselective autocatalysis for compounds unable to transform according to the Frank-like reaction network is discussed with respect to the controversial limited enantioselectivity (LES) model composed of coupled enantioselective and non-enantioselective autocatalyses. The LES model cannot lead to spontaneous mirror symmetry breaking (SMSB) either in closed syst...

The integration of blind people into learning and working environments of the sighted needs among other things a possibility to write and represent mathematical expressions in an appropriate way. There exist different concepts how to form a mathematical notation for the blind. This contribution presents in a first step a discussion of the variety of demands for a mathematical notation. In a sec...

The nonequilibrium effective potential is computed for the Frank model of spontaneous mirror symmetry breaking (SMSB) in chemistry in which external noise is introduced to account for random environmental effects. When these fluctuations exceed a critical magnitude, mirror symmetry is restored. The competition between ambient noise and the chiral bias due to physical fields and polarized radiat...

Chiral hypercycle replicators (first-order autocatalysis together with mutual cross-catalysis) formed from achiral or racemizing resources may lead to spontaneous mirror symmetry breaking (SMSB) without the need for additional heterochiral inhibition reactions, such as those of the Frank-like models, which are an obstacle for the emergence of evolutionary selection properties. The results indic...

On SmSb single crystals synthesized from elements, the electrical resistance R and magnetization M were measured as functions of temperature magnetic field. A large magnetoresistance is observed over entire range 2–300 K, increasing significantly with decreasing temperature. The dependence exhibits a singularity at transition to antiferromagnetic state TN=2.3 K. At temperatures below 8 de Haas-...

On SmSb single crystals synthesized from elements, the electrical resistance R and magnetization M were measured as functions of temperature magnetic field. A large magnetoresistance is observed over entire range 2-300 K, increasing significantly with decreasing temperature. The dependence exhibits a singularity at transition to antiferromagnetic state T N =2.3 K. At temperatures below 8 de Haa...

Nesreen Abu Yousif Hamid1, Hala kamal Ali Mohamed2,3,4* and Mohammed Elmujtba Adam Essa5,6* Author Affiliations 1Health Professions Education, Education Development Research Centre Faculty of Medicine, the international university Africa, Sudan 2Departments Microbiology, African International University (AIU), 3Department clinical Immunology, Medical Specialization board (SMSB), 4Faculty medici...

LaSb _2 2 exhibits a large, non-saturating, linear magnetoresistance at low temperatures, defying the expectations of Fermi liquid theory. This is thought to be caused by charge density wave order emerging below an abrupt, hysteretic anomaly in resistivity \sim di...