Noise in Genotype Selection Model

We study the steady state properties of a genotype selection model in presence of correlated Gaussian white noise. The effect of the noise on the genotype selection model is discussed. It is found that correlated noise can break the balance of gene selection and induce the phase transition which can makes us select one type gene haploid from a gene group.Comment: 8 pages, 4 figure

Current Reversals in a inhomogeneous system with asymmetric unbiased fluctuations

We present a study of transport of a Brownian particle moving in periodic symmetric potential in the presence of asymmetric unbiased fluctuations. The particle is considered to move in a medium with periodic space dependent friction. By tuning the parameters of the system, the direction of current exhibit reversals, both as a function of temperature as well as the amplitude of rocking force. We found that the mutual interplay between the opposite driving factors is the necessary term for current reversals.Comment: 9 pages, 7 figure

3-(5-Chloro­naphthalene-1-sulfonamido)-2-(2-hy­droxy­eth­yl)-4,5,6,7-tetra­hydro-2H-pyrazolo­[4,3-c]pyridin-5-ium chloride

In the cation of the title compound, C18H20ClN4O3S+·Cl−, the tetra­hydro­pyridinium ring assumes a half-chair conformation. The dihedral angle between the pyrazole ring and the naphthalene ring system is 75.19 (6)°. In the crystal, ions are linked into a three-dimensional network by N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds and weak π–π stacking inter­actions with centroid–centroid distances of 3.608 (2) Å

Bis[4-(2-hy­droxy­benzyl­idene­amino)­benzoato-κO 1]tetra­kis­(methanol-κO)cadmium

In the title mononuclear complex, [Cd(C14H10NO3)2(CH3OH)4], the Cd2+ cation is situated on an inversion centre. It exhibits a distorted octa­hedral coordination, defined by two carboxyl­ate O atoms from two monodentate anions and by four O atoms from four methanol mol­ecules. The crystal structure comprises intra­molecular O—H⋯O and O—H⋯N, and inter­molecular O—H⋯O hydrogen bonds. The latter help to construct a layered structure extending parallel to (100)

5-tert-Butyl 1-ethyl 3-amino-1,4,5,6-tetra­hydro­pyrrolo­[3,4-c]pyrazole-1,5-dicarboxyl­ate

The asymmetric unit of the title compound, C13H20N4O4, contains two crystallographically independent mol­ecules in which the dihedral angles between the fused pyrrole and pyrazole rings are 5.06 (8) and 1.12 (8)°. In the crystal, mol­ecules are linked by inter­molecular N—H⋯O and N—H⋯N hydrogen bonds into chains parallel to the b axis

Poly[[tetra­kis­(μ-2-anilinobenzoato-κ2 O:O′)tetra-μ1,1,1-azido-tetra-μ1,1-azido-octa­methano­lhexa­nickel(II)] methanol hexa­solvate]

The crystal structure of the title compound, [Ni6(C13H10NO2)4(N3)8(CH3OH)8]·6CH3OH, consists of a centrosymmetric hexa­nuclear [NiII 6(C13H10NO2)4(N3)8(CH3OH)8] mol­ecule and six methanol solvent mol­ecules. In the hexa­nuclear unit, the six octa­hedrally coordinated NiII atoms are linked by four μ1,1,1-azide and four μ1,1-azide bridges, forming a face-sharing Ni6N8 tetra­cubane-like unit with four missing corners. The NiII atoms are further bridged by four μ1,2-carboxalate groups. Neighbouring hexa­nuclear units are connected via N—H⋯O hydrogen-bonding inter­actions into a three-dimensional structure. Although the H atoms of the methanol OH groups could not be located, O⋯N/O contacts between 2.65 and 2.86 Å suggest that these mol­ecules participate in hydrogen bonding

Dichloridobis[2-(2-fur­yl)-1-(2-furylmeth­yl)-1H-benzimidazole-κN 3]cadmium(II)

In the title complex, [CdCl2(C16H12N2O2)2], the CdII ion exhibits site symmetry 2. It shows a distorted tetra­hedral coordination defined by two N atoms from symmetry-related 2-(2-fur­yl)-1-(2-furylmeth­yl)-1H-benzimidazole ligands and by two symmetry-related Cl atoms. Intra­molecular C—H⋯O hydrogen bonds stabilize the mol­ecular configuration. Adjacent mol­ecules are linked through C—H⋯Cl hydrogen bonds into a network structure

catena-Poly[[chloridocadmium(II)]bis­{μ-1-[(2-ethyl-1H-imidazol-1-yl)meth­yl]-1H-benzotriazole}[chloridocadmium(II)]di-μ-chlorido]

In the polymeric title complex, [CdCl2(C12H13N5)]n, the CdII atom is five-coordinated by two N atoms from two bridging 1-[(2-ethyl-1H-imidazol-1-yl)meth­yl]-1H-benzotriazole (bmei) ligands, two bridging Cl atoms and one terminal Cl atom in a distorted trigonal–bipyramidal geometry. The CdII atoms are connected alternately by the Cl atoms and bmei ligands, leading to a zigzag chain extending parallel to [011]. π–π inter­actions, with a centroid–centroid distance of 3.3016 (3) Å, help to stabilize the crystal packing

Enormous lithium isotopic variations of abyssal peridotites reveal fast cooling and Melt/Fluid-rock interactions

Author Posting. © American Geophysical Union, 2020. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Solid Earth 125(9),(2020): e2020JB020393, doi:10.1029/2020JB020393.Fast diffusing Li isotopes provide important insights into the “recent” transient events or processes for both modern and ancient times, but questions remain concerning the large Li isotopic variations of mantle peridotites, which greatly hampers their usage as a geochemical tracer. This study investigates in situ Li content and isotopic profiles of the constituent minerals of abyssal peridotites from the Gakkel Ridge and Southwest Indian Ridge. The complicated and large variations of Li isotopic profiles in Clinopyroxene (Cpx) and Orthopyroxene (Opx) indicate Li isotopic disequilibrium at millimeter scale. The negative correlations of a wide range of Li contents (0.5 to 6.5 ppm) and δ7Li values (−10 to +20‰) of olivine, Opx and Cpx grains/relicts, trace element zoning of Cpx, the occurrence of plagioclase, olivine serpentinization along cracks, together with numerical modeling demonstrate the observed Li characteristics to be a manifestation of high‐temperature mineral‐melt Li diffusion during melt impregnation overprinted by low‐temperature mineral‐fluid Li diffusion during dissolution and serpentinization. The preservation of the Li isotopic diffusion profiles requires rapid cooling of 0.3–5°C/year after final‐stage melt impregnation at the Moho boundary, which is consistent with the low temperature at very slow spreadin g ridges caused by conductive cooling. Compared with the well‐studied melt‐rock interaction process, our study indicates that low‐temperature fluid‐rock interaction can induce Li diffusion even in the visibly unaltered mineral relicts of partially altered rocks.This study was financially supported by the National Science Foundation of China (grant no. 41872058) and the U.S. National Science Foundation grant.2021-03-0