It is shown that under the influence of an autosomal meiotic mutant that causes abnormalities in meiotic centromere function (mei-S332), ring-X chromosomes are frequently nonrecoverable. Evidence is presented that this nonrecoverability is caused by a failure of sister ring-chromatids to successfully effect an equational separation with resultant dominant lethality. Because mei-S332 results in ...

We used a ring-shear apparatus to examine the perpendicular permeability of sands with different mineral compositions to evaluate fault behavior around gas hydrate reservoirs. The effect of effective normal stress on the permeability of two sand types was investigated under constant effective normal stresses of 0.5–8.0 MPa. Although Toyoura sand and silica sand No. 7 mainly comprise quartz, sil...

A 12-year-old boy presented to us with subacute onset of progressive quadriparesis and blurring of vision in the right eye. His sensorium was normal. There was hyper-reflexia and spasticity in all four limbs and the plantar reflex was bilaterally extensor. Vision in the right eye was 6/18. The fundus examination was normal. Cerebrospinal fluid revealed normal sugar, normal cells with raised pro...

Finite generation of the symbolic Rees ring a space monomial prime ideal 3-dimensional weighted polynomial is very interesting problem. Negative curves play important roles in finite these rings. We are interested structure negative curve. shall prove that rational many cases. also see Cox blow-up toric variety at point (1,1,…,1) coincides with extended an ring. For example, Roberts' second cou...

Let I denote the commutator ideal in the free associative algebra on m variables over an arbitrary field. In this article we prove there are exactly m! finite Gröbner bases for I , and uncountably many infinite Gröbner bases for I with respect to total division orderings. In addition, for m = 3 we give a complete description of its universal Gröbner basis. Let A be a finite set and let K be a f...

A Morita context is constructed for any comodule of a coring and, more generally, for an L-C bicomodule Σ for a coring extension (D : L) of (C : A). It is related to a 2-object subcategory of the category of k-linear functors M → M. Strictness of the Morita context is shown to imply the Galois property of Σ as a C-comodule and a Weak Structure Theorem. Sufficient conditions are found also for a...

Ring-like quantum structures generalizing Boolean rings and having the property that the terms corresponding to the two normal forms of the symmetric difference in Boolean algebras coincide are investigated. Subclasses of these structures are algebraically characterized and related to quantum logic. In particular, a physical interpretation of the proposed model following Mackey’s approach to ax...

We report measurements of Aharonov-Bohm oscillations in normal metal rings in the presence of highfrequency electromagnetic fields. The power dependence of the decoherence time scale P agrees well with the anticipated power law P −1/5 when the field-induced decoherence rate ac −1 is large compared to the intrinsic decoherence rate o , measured in the absence of external fields. As theoretically...

A superconducting (SC) mixed state occurs in type-II superconductors where the upper critical field ${H}_{c2}$ is higher than thermodynamic ${H}_{c}$. When an applied between these fields, free energy depends weakly on order parameter which therefore can be small (SC state) or zero (normal at different parts of sample. In this paper we demonstrate how a normal along line traversing superconduct...

Abstract We assess the prospect of using ring seismology to probe interiors ice giants Uranus and Neptune. do this by calculating normal-mode spectra for different interior models Neptune stellar oscillation code GYRE . These provide predictions where in these planets’ systems effects oscillations might be detected. find that f -mode resonances with azimuthal order m = 2 or 7 ≤ 19 fall among in...