The structures of diumycinol (1), isodiumycinol (2), and diumycene (3), the nonisoprenoid C25 lipids obtained by acid hydrolysis of the antibiotic diumycin, have been determined by analysis of spectral data and the identification of a number of degradation products. Examination of the ORD of a d...

The closely related antibiotics diumycin A and B, with monomeric molecular weights of approximately 1800 daltons in ethanol, aggregate in aqueous buffers to form particles with a molecular weight (mol. wt.) of at least 32,000 daltons. The aggregate of diumycin is essentially unaffected by esteri...

Azadirachtin, a tetranortriterpenoid botanical insecticide, has varied sub-lethal effects against many insect pests, including antifeedant, repellent, and growth regulatory. Despite extensive studies of the mechanisms that underline these physiological effects, little attention has been given to...

The applicability of Dextran Sulphate (DS) agarose in the purification of the VIII/vWf complex from cryoprecipitate was investigated. The elution profiles indicate high affinity of the VIII/vWf complex for the matrix. With application of combined salt/pH gradients good resolution of VIII/vWf fro...

A relatively simple and reproducible chromatographic separation using Dextran Sulphate (DS) Agarose is described for the purification of vWf:Ag from cryoprecipitate or plasma source material. The elution profiles suggest high affinity of vWf for the matrix permitting resolution from Fibrinogen, ...

Modification of tyrosine residues in extracellular proteins by a sulfate moity plays an important role in many ligand/receptors interactions. In the present work, we describe a unique human monoclonal antibody, termed Y1-scFv, that is specific for a sulfated epitope in the platelat receptor GPIb...

Ristocetin A is one of a series of structurally related amphoteric, glycopeptide, macrocyclic antibiotics. These compounds have several features that make them attractive as chiral selectors. These include spatially oriented functional groups that are known to provide the types of interactions t...

The antibiotic ristocetin is a glycoproteoid isolated from the culture media of Nocardia lurida N.R.R.L. 2430 whose structural features have yet to be resolved (1–3). The antibiotic has been studied both for its antibiotic properties (4–6) and, more recently, for its inducement of platelet agg...

Background: Recent work has indicated that dimerization is important in the mode of action of the vancomycin group of glycopeptide antibiotics. NMR studies have shown that one member of this group, ristocetin A1 forms an asymmetric dimer with two physically different binding sites for cell wall ...

Selectively and totally sulfated (1 → 3)-linked linear homofucans bearing ∼20 monosaccharide residues on average have been prepared from the branched xylofucan sulfate isolated from the brown alga Punctaria plantaginea. Anticoagulant and antithrombotic properties of the parent biopolymer and i...

Von Willebrand factor (VWF) is a multimeric glycoprotein present in circulating blood and in secretory granules of endothelial cells and platelets. VWF is sensitive to hydrodynamic shear stress that promotes conformational changes, rendering it able to interact with subendothelial proteins and p...

ObjectiveCompare colonic distension and perceived burden of CT-colonography between participants receiving hyoscine butylbromide (buscopan) and glucagon hydrochloride as bowel relaxant.

In order to enhance the storage performance and electrochemical reversibility of the Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode material at high cut-off voltage (4.6 V), the surface coating layer of lithium tungstate (Li2WO4) is successfully prepared via a one-step synthesis way followed with a high te...

In this work, we found the significant improvement of photoluminescence of zinc tungstate doped with potassium salts. The samples were prepared by solid-state reaction using ZnO, WO3, KNO3, K2SO4, and KCl as starting powders. The powders were mixed with the molar ratios of ZnO: WO3: potassium sa...

Ru nanoparticles supported on tungstated zirconia (WZr) were prepared and used for the catalytic hydrodeoxygenation of guaiacol to deoxygenated hydrocarbon fuels. The tuning of tungsten, from 5 to 20 wt%, adjusted the number of acid sites on the tungstated zirconia and the size of the Ru nanopar...

The enhancement of photoluminescence of alkali metal sulfate-doped zinc tungstate was investigated. All samples were prepared by solid-state reaction at 800 °C using ZnO, WO3, and alkali metal sulfates as starting powders. The zinc tungstate phase was confirmed from the samples by X-ray diffrac...

We investigated the thermal behavior of titanium hydride with different particle size at the different atmospheres using the thermal analysis techniques. The results demonstrated that the smaller particle has larger reactivity and showed less stable at higher heating rates. Even in the thermal p...

Direct energy deposition (DED) is one of additive manufacturing processes, which achieves high production efficiency by supplying material powder and irradiating high-power laser beam to a baseplate at the same time. Furthermore, the DED has a potential to produce a functional material by blendi...

The gas released from the titanium hydride decomposition is one of the key factors to influence the Al alloy melt foaming process. In this study, a set of decomposition kinetic equations of titanium hydride was acquired by separating its temperature programmed decomposition (TPD) spectrum, which...

We report the results of an ab initio-based density functional theory study of the thermodynamic and structural properties of titanium hydrides. The thermodynamic modelling contains contributions from both vibrational and electronic excitations to the free energy and is conducted using the quasi...