Abstract:
The invention describes a novel dissymmetric nickel-based complex and the method of preparation thereof from at least one diphosphinamine ligand B1 of formula (R1)(R′1)P—N(R3)—P(R2)(R′2), or an iminobisphosphine ligand B2 of formula (R3)N═P(R1)(R′1)—P(R2)(R′2). The invention also concerns the use of said complex in a method for oligomerisation of olefins.
Abstract:
The invention describes a novel catalytic composition comprising at least one nickel precursor A with at least one diphosphinamine ligand B1 of formula (R1)(R′1)P—N(R3)—P(R2)(R′2) or an iminobisphosphine ligand B2 of formula (R3)N═P(R1)(R′1)—P(R2)(R′2) or an iminobisphosphine ligand B′2 of formula (R3)N═P(R2)(R′2)—P(R1)(R′1). The invention also describes the use of said catalytic composition in a method for the oligomerisation of olefins.
Abstract:
The invention describes a novel type of nickel-based complex and its preparation method. The invention also concerns the use of said complex in a process for the transformation of olefins.
Abstract:
Human hepatocyte cell cultures and their use in bioreactors and bioartificial liver (BAL) systems are provided. The cells have constitutive liver-specific metabolic activity resembling that of freshly isolated human hepatocytes. The hepatocyte cells and BAL systems can be used to treat patients suffering from acute liver failure, end-stage liver disease, or acute-on-chronic liver disease.
Abstract:
Mammography-apparatus for detecting malignant cells in a breast, comprising an x-ray source and an x-ray detector that cooperates with the x-ray source for providing an x-ray image of said breast, and further comprising a paddle for flattening the breast by pressing it against said x-ray detector, and comprising a contact area measuring device for measuring a contact area between the breast and the paddle, wherein the contact area measuring device is embodied with at least a first laminate of an electrically insulating material and an electrically low resistance material, which first laminate is provided on a side of the paddle facing the breast, and wherein the electrically low resistance material is sandwiched between the paddle and the insulating material.