The Role of Leukotriene B in Cow Metritis.

Introduction: Metritis is a common postpartum disease in dairy cows. As a mast cell (MC) mediator, leukotriene B (LTB) is the strongest phagocyte chemokine. It is important in inflammation for the recruitment of immune cells to resist infection.

Synthesis and X-Ray Crystal Structures of Trinuclear Nickel(II) Complexes Derived from Schiff Bases and Acetate Ligands with Biological Activity.

The reactions of Ni(OAc)2 2H2O with Schiff base ligands 5-bromo-2-((cyclopentylimino)methyl)phenol (HL1) and 5-bromo-2-(((2-(isopropylamino)ethyl)imino)methyl)phenol (HL2) in methanol afforded two discrete trinuclear com-plexes [Ni3(L1)2(?2-?1:?1-OAc)2(DMF)2(BrSal)2] (1) and [Ni3(L2)2(?2-?1:?1-OAc)2(?2-?2:?1-OAc)2] (2), where BrSal is the monoanionic form of 4-bromosalicylaldehyde. The complexes were characterized by elemental analysis, IR and UV-Vis spectroscopy. The crystal structures of the complexes have been determined by X-ray crystallography.

Method of electrochemical etching of tungsten tips with controllable profiles.

We demonstrate a new and simple process to fabricate tungsten tips with good control of the tip profile. In this process, we use a commercial function generator without any electronic cutoff circuit or complex mechanical setup. The tip length can be varied from 160 μm to 10 mm, corresponding to an aspect ratio of 1.

4-Meth-oxy-N'-(3-nitro-benzyl-idene)benzohydrazide.

In the title compound, C(15)H(13)N(3)O(4), the dihedral angle between the benzene rings is 3.1 (3)°. The mol-ecule displays an E conformation about the C=N bond.

4-Hy-droxy-N'-(3-nitro-benzyl-idene)benzohydrazide.

The title compound, C(14)H(11)N(3)O(4), was obtained by a condensation reaction between 3-nitro-benzaldehyde and 4-hy-droxy-benzohydrazide. The whole mol-ecule is approximately planar, with a dihedral angle of 9.2 (3)° between the benzene rings.

Fabrication of CoPt ultra-sharp single atom tips.

Two kinds of new nano tips with potential to magnetic application are fabricated. One is a PtCo alloy pyramidal tip formed by surface faceting, the other is a Pt based Co tip formed by the epitaxy with a proper growth mode. Ultra high vacuum-field ion microscopy with atomic resolution is used to investigate the atomic structures of the tip apex after various sharpen treatments.

A single-atom sharp iridium tip as an emitter of gas field ion sources.

We report a reliable method for preparing a pure Ir single-atom tip by thermal treatment in oxygen. The atomic structure of the tip apex and its ion emission characteristics are investigated with field ion microscopy. We have shown that the Ir single-atom tip can be a good field ion emitter, capable of emitting a variety of gas ion beams, such as He+, H2+, N2+, and O2+, with high brightness and stability.

N'-(3-Bromo-5-chloro-2-hydroxy-benzyl-idene)-2-methoxy-benzohydrazide.

The title compound, C(15)H(12)BrClN(2)O(3), was obtained by the condensation reaction between 3-bromo-5-chloro-2-hydroxy-benzaldehyde and 2-methoxy-benzohydrazide. The mol-ecule is essentially planar, with a dihedral angle between the two benzene rings of 4.7 (2)°, and displays an E configuration about the C=N double bond.