Abstract: A quick disconnect Kelly bar system is provided. In use, a construction attachment includes a quick disconnect mounting plate for connecting the construction attachment to a hitch of a construction machine. A pivotable coupling assembly is connected to the quick disconnect mounting plate. Additionally, an extendable mast is connected to the pivotable coupling assembly at a first end of the extendable mast, and to a headblock structure at a second end of the extendable mast. Further, a Kelly-bar assembly is connected to the headblock structure.

Abstract: A quick disconnect Kelly bar system is provided. In use, a construction attachment includes a quick disconnect mounting plate for connecting the construction attachment to a hitch of a construction machine. A pivotable coupling assembly is connected to the quick disconnect mounting plate. Additionally, an extendable mast is connected to the pivotable coupling assembly at a first end of the extendable mast, and to a headblock structure at a second end of the extendable mast. Further, a Kelly-bar assembly is connected to the headblock structure.

Abstract: The present invention relates to methods and compositions for modifying peptides, polypeptides and proteins with polymers, especially glyco-mimetic polymers, so as to improve their biological activity or pharmacokinetic properties. The invention further provides methods and uses for such polymer-modified peptides, polypeptides and proteins. The invention is particularly suitable for use in the synthesis of polymer-modified, synthetic bioactive proteins, and of pharmaceutical compositions that contain such proteins.

Abstract: The present invention concerns methods and compositions for extending the technique of native chemical ligation to permit the ligation of a wider range of peptides, polypeptides, other polymers and other molecules via an amide bond. The invention further provides methods and uses for such proteins and derivatized proteins. The invention is particularly suitable for use in the synthesis of optionally polymer-modified, synthetic bioactive proteins, and of pharmaceutical compositions that contain such proteins.

Abstract: The invention relates to polymer-modified bioactive synthetic chemokines and to methods for their production and use. The bioactive synthetic chemokines of the invention comprises a polymer modified polypeptide chemokine backbone. The compounds and methods or the invention are useful for the treatment of disorders involving naturally occurring chemokines, such as for the treatment of HIV and AIDS related disorders and for the treatment of asthma, allergic rhinitis, atopic dermatitis, atheroma/atherosclerosis, organ transplant rejection, and rheumatoid arthritis.