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The noisy fluctuation of chemical reactions should profoundly affect the oscillatory dynamics of gene circuit. In this paper a prototypical genetic oscillator, repressilator, is numerically simulated to analyze effects of noise on oscillatory dynamics. The oscillation is coherent when the protein number and the rate of the DNA state alteration are within(More)
Introduction: Fine-grained inclusions (FGIs) are considered to be of condensation origin judging from their fine-grained texture and the Group II REE pattern typically found in FGIs [1]. Group II REE pattern is characterized by depletion of HREE (except Tm) relative to LREE and depletion of the least refractory Eu and Yb, suggesting condensation from a(More)
Stochastic dynamics of chemical reactions in a mutually repressing two-gene circuit is numerically simulated. The circuit has a rich variety of different states when the kinetic change of DNA status is slow. The stochastic switching transition between those states are compared with the theoretical estimation of the switching rate derived from the idea(More)
Introduction: There are two recent opposing views on the type of impactor that created the well-preserved, ca. 10 km-in-diameter Lockne crater (458 Ma) in central Sweden [1, 2]. Abundant extraterrestrial chromite grains (ca. 75 per kg) with L-chondritic element composition in the Lockne crater resurge deposits (Loftar-stone) indicates that the impact was(More)
An approach to coordinated, spatially resolved, in situ carbon isotope analysis of organic matter and carbonate minerals, and sulfur three- and four-isotope analysis of pyrite with an unprecedented combination of spatial resolution, precision, and accuracy is described. Organic matter and pyrite from eleven rock samples of Neoarchean drill core express(More)
OBJECTIVE Biomechanical effects of laterally wedged insoles are assessed by reduction in the knee adduction moment. However, the degree of reduction may vary depending on the reference frame with which it is calculated. The purpose of this study was to clarify the effect of reference frame on the reduction in the knee adduction moment by laterally wedged(More)
Introduction: Chondrules are small igneous sili-cate spherules and are abundant in primitive meteorites , implying that the melting of silicate particles was a common phenomenon in the solar nebula. However, their formation process and their precursor are still in controversy [1]. Oxygen isotopic composition of chondrules could be the useful information to(More)
Introduction: Recent works suggest that unmelted, phillosilicate-bearing micrometeorites and hydrous interplanetary dust particles (IDPs) collected at stratosphere are related to hydrated carbonaceous chondrites [1], [2], which are supposed to be derived from C-, P-, D-, or T-type asteroids [3, 4]. Anhydrous IDPs are supposed to be cometary origin because(More)
Introduction: The L chondrite parent body breakup event manifests itself in present-day meteorites more distinctly than any other asteroid breakup event in younger solar system history. Its most distinctive features are recorded in most modern L chondrite falls, and include a highly prominent Ar gas-retention age cluster at ~0.5 Ga and extensive signs of(More)