Abstract: A mortar mix and a concrete mix incorporate a stillage admixture that improves the workability of fresh concrete and advantageously modifies the properties of the hardened concrete.

Abstract: Apparatus and methods for producing ultrashort optical pulses are described. A high-power, solid-state, passively mode-locked laser can be manufactured in a compact module that can be incorporated into a portable instrument. The mode-locked laser can produce sub-50-ps optical pulses at a repetition rates between 200 MHz and 50 MHz, rates suitable for massively parallel data-acquisition. The optical pulses can be used to generate a reference clock signal for synchronizing data-acquisition and signal-processing electronics of the portable instrument.

Abstract: The invention provides a cementitious composition comprising a cement component comprising (i) an accelerant, (ii) a calcium sulphate source and (iii) an ettringite forming cement; an aggregate; and optionally water; wherein the cement has a minimum unconfined compressive strength of 1500 psi when tested in accordance with ASTM C1140 and/or C1604 at 15 minutes after placement; methods for its use and concrete formed from it.

Abstract: The invention provides a cementitious composition comprising a cement component comprising (i) an accelerant, (ii) a calcium sulphate source and (iii) an ettringite forming cement; an aggregate; and optionally water; wherein the cement has a minimum unconfined compressive strength of 1500 psi when tested in accordance with ASTM C1140 and/or C1604 at 15 minutes after placement; methods for its use and concrete formed from it.

Abstract: Systems, methods, and media for controlling the exposure of orders to trading platforms are provided. In accordance with some embodiments, systems for controlling the exposure of orders to trading platforms are provided, the systems comprising: at least one hardware processor that: receives information for at least one order to trade a security; and for each of a plurality of trading platforms, determines how the at least one order is to be exposed to trading platform based on at least one of a default exposure setting for all orders for the trading platform, at least one filter for the trading platform, and an exposure status setting for the trading platform and the at least one order, and provides information for the at least one order to the trading platform.