Of the many examples of oscillatory kinetic behaviour known, several are briefly reviewed, including those of glycolysis, the peroxidase-oxidase reaction and oscillations in cellular calcium concentration. It is shown that simple mathematical models employing allosteric rate laws are sufficient to explain the instability of the steady state and the appearance of sustained oscillations. The cAMP...

Communicated by Ivaïlo M. Mladenov Abstract. Nonlinear space-time dynamics, defined in terms of celebrated ‘solitonic’ equations, brings indispensable tools for understanding, prediction and control of complex behaviors in both physical and life sciences. In this paper, we review sine–Gordon solitons, kinks and breathers as models of nonlinear excitations in complex systems in physics and in li...

Despite the ability of sorghum [Sorghum bicolor (L.) Moench] to withstand harsh environmental conditions, it is susceptible water-deficit stress during grain filling. To identify postflowering, drought-tolerant genotypes, parents nested association mapping populations were evaluated under controlled and conditions in greenhouse field conditions. In both experiments, was imposed by withholding w...

Abstract The intra-cellular wave dynamics of a water jetted phononic plate are experimentally investigated by means high-resolution three-dimensional (3D) scanning laser Doppler vibrometry. study is focused on the vibrational behavior around ultra-wide bandgap (with relative width 0.89), as critical frequency range its functionality. Broadband excitations applied using piezoelectric transducer ...

Resting 3T3 cells have relatively more sulphated glycosaminoglycans and Ca2+ in their cell coat than do growing or SV40-virus-transformed cells. It is suggested that the different Ca2+-binding capacity controls cellular activities by affecting the distribution of Ca2+ between the intra- and ecto-cellular compartments.

A fuzzy goal programming-based approach is used to solve a proposed multi-objective linear programming model and simultaneously handle two important problems in cellular manufacturing systems, viz. cell formation and layout design. Considerations of intra-cell layout, the intra-cell material handling can be calculated exactly. The advantages of the proposed model are considering machining cost,...

objective: oxidative stress as a consequence of aging can induce infertility in males. in this study, we have investigated the effects of aging on sperm parameters, intra-spermatic water soluble antioxidants, reactive oxygen species (ros), and in vitro blastocyst formation. methods: we chose 5 older nmri male mice (10-12 months) and 5 younger nmri male mice (2-3 months). sperm parameters, ros, ...

In the title compound, C17H22ClNO·0.5H2O, the water mol-ecule O atom resides on a twofold rotation axis. In the organic mol-ecule, the phenol group forms an intra-molecular O-H⋯N hydrogen bond. In the crystal, pairs of organic mol-ecules are hydrogen bonded through bridging solvent water mol-ecules, forming chains along the b-axis direction.