Abstract: Tissue scaffold matrices, and methods of their use, are described. The matrices comprise an enzyme that is able to convert a substrate to release hydrogen peroxide and a substrate for the enzyme. The matrices may be impregnated with cells, such as stem cells. Also described are cell cultures, and methods for proliferating and/or differentiating cells.

Abstract: Fibers for generating antimicrobial activity are described. The fibers comprise an enzyme that is able to convert a substrate to release hydrogen peroxide, and a substance that includes a substrate for the enzyme. In the presence of sufficient free water, the enzyme converts the substrate to release hydrogen peroxide, which is effective against a wide range of microbes. Wound dressings and compositions for forming such fibers are also described, as is the use of the fibers, wound dressings and compositions.

Abstract: Fibers for generating antimicrobial activity are described. The fibers comprise an enzyme that is able to convert a substrate to release hydrogen peroxide, and an unrefined natural substance that includes a substrate for the enzyme, wherein the enzyme is additional to any enzyme activity able to convert the substrate to release hydrogen peroxide that may be present in the unrefined natural substance. In the presence of sufficient free water, the enzyme converts the substrate to release hydrogen peroxide, which is effective against a wide range of microbes. Wound dressings and compositions comprising the fibers are also described, as is use of the fibers, wound dressings and compositions, particularly for wound healing.

Abstract: Compositions for prevention and treatment of microbial infectious, such as microbial infections that comprise a biofilm, or a microbe that is capable of forming a biofilm are described. The compositions comprise an enzyme that is able to convert a substrate to release hydrogen peroxide and a substance that includes a substrate for the enzyme. The enzyme is additional to any enzyme activity able to convert the substrate to release hydrogen peroxide that may be present in the substance. The substance may be an unrefined natural substance or a substance that includes a purified substrate for the enzyme.

Abstract: A tubular component includes a limit collar disposed about the tubular component, and the limit collar comprises a body portion comprising a plurality of upsets disposed on an inner surface of the body portion, wherein the plurality of upsets define a first ring, a second ring, and at least one rib, at least one chamber formed between the inner surface of the body portion, an outer surface of the tubular component, and one or more surfaces of the first ring, the second ring, or the at least one rib, and a binder portion disposed in the at least one chamber.

Abstract: A centralizer system comprising a centralizer disposed about a wellbore tubular, wherein the centralizer comprises, a first body portion, a second body portion, and a plurality of bow springs connecting the first body portion to the second body portion, and a plurality of limit collars coupled to the wellbore tubular between the first body portion and the second body portion, where at least one of the plurality of limit collars is configured to engage the first body portion or the second body portion and pull the centralizer in the direction of travel within the wellbore.

Abstract: A centralizer system comprising a centralizer disposed about a wellbore tubular, wherein the centralizer comprises, a first body portion, a second body portion, a plurality of bow springs connecting the first body portion to the second body portion, and at least one window disposed in the first body portion, and a retaining portion disposed in the at least one window, wherein the retaining portion is configured to provide a substantially fixed engagement between the first body portion and the wellbore tubular.

Abstract: A centralizer system comprising a centralizer disposed about a wellbore tubular, wherein the centralizer comprises, a first body portion, a second body portion, a plurality of bow springs connecting the first body portion to the second body portion, and at least one window disposed in the first body portion, and a retaining portion disposed in the at least one window, wherein the retaining portion is configured to provide a substantially fixed engagement between the first body portion and the wellbore tubular.

Abstract: A centralizer system comprising a centralizer disposed about a wellbore tubular, wherein the centralizer comprises, a first body portion, a second body portion, and a plurality of bow springs connecting the first body portion to the second body portion, and a plurality of limit collars coupled to the wellbore tubular between the first body portion and the second body portion, where at least one of the plurality of limit collars is configured to engage the first body portion or the second body portion and pull the centralizer in the direction of travel within the wellbore.

Abstract: This invention relates to an improved magnetic field induction therapy device and an improved method of treatment using magnetic field induction therapy. The method and device utilise pulsed alternating magnetic fields of specific characteristics which have been found to be, at least, therapeutic, In particular, the present invention relates to a device and method for creating varied and programmable magnetic fields, especially in a hand held unit for medical or therapeutic applications. The therapeutic value of magnetic fields has been known for more than two thousand years. Permanent magnets placed on or adjacent an animal or human body have been used for pain relief and blood circulation improvement. It is also known to use pulsating magnetic fields for medical and therapeutic purposes. For over 40 years the use of electro-magnetic fields has been known to be more beneficial than static or permanent magnetic fields.

Abstract: A tubular component includes a limit collar disposed about the tubular component, and the limit collar comprises a body portion comprising a plurality of upsets disposed on an inner surface of the body portion, wherein the plurality of upsets define a first ring, a second ring, and at least one rib, at least one chamber formed between the inner surface of the body portion, an outer surface of the tubular component, and one or more surfaces of the first ring, the second ring, or the at least one rib, and a binder portion disposed in the at least one chamber.

Abstract: A system and process for concentrating hydrocarbons in a bitumen feed comprising bitumen, water and solids. The system comprises an inclined plate separator, a hydrocarbon cyclone and a centrifuge. The inclined plate separator separates the bitumen feed into a first overflow stream and a first underflow stream, the first overflow stream having a first bitumen concentration greater than that of the first underflow stream. The hydrocarbon cyclone separates the first underflow stream into a second overflow stream and a second underflow stream. The centrifuge separates the second overflow stream into a third overflow stream and a third underflow stream, the third overflow stream having a third bitumen concentration that is greater than that of the third underflow stream.