摘要:
A ground penetrating radar stencil and system for using the same is provided. The stencils are reusable. The stencils are foldable, allowing for storing and transportation. A first data collection grid stencil is used to mark a grid followed by alternative target marking stencils used to mark utility line and structural support lines. Indelible stencil paint/ink is applied on and through the stencils onto the concrete surfaces to provide for a permanent, standardized and consistent marking of critical embedded infrastructure. The system allows for a uniform collecting and recording of the scanning data results for future reference and work in the same area.
摘要:
Disclosed are systems, apparatus, devices and methods, including a method that includes determining traction forces exerted by a cellular monolayer on a substrate on which the monolayer is placed, and determining internal forces within and between cells of the monolayer based on the determined traction forces. In some embodiments, determining the internal forces of the cellular monolayer may include determining internal stresses within the cellular monolayer that act to balance the determined traction forces over at least part of the cellular monolayer. In some embodiments, determining of the internal stresses may also include setting boundary conditions at a boundary determined based on an optical field of view of an observed section of the monolayer.
摘要:
Alkylation systems and processes are described herein. The alkylation system generally includes a preliminary alkylation system containing a preliminary alkylation catalyst therein and adapted to contact an aromatic compound and an alkylating agent with the preliminary alkylation catalyst so as to alkylate the aromatic compound and form a preliminary output stream, wherein the preliminary alkylation system includes a first preliminary alkylation reactor and a second preliminary alkylation reactor connected in parallel to the first preliminary alkylation reactor and a primary alkylation system adapted to receive the preliminary output stream and contact the preliminary output stream and the alkylating agent with a primary alkylation catalyst disposed therein so as to form a primary output stream.
摘要:
Disclosed are systems, apparatus, devices and methods, including a method that includes determining traction forces exerted by a cellular monolayer on a substrate on which the monolayer is placed, and determining internal forces within and between cells of the monolayer based on the determined traction forces. In some embodiments, determining the internal forces of the cellular monolayer may include determining internal stresses within the cellular monolayer that act to balance the determined traction forces over at least part of the cellular monolayer. In some embodiments, determining of the internal stresses may also include setting boundary conditions at a boundary determined based on an optical field of view of an observed section of the monolayer.
摘要:
A nickel-titanium-rare earth (Ni—Ti-RE) alloy comprises nickel at a concentration of from about 35 at. % to about 65 at. %, a rare earth element at a concentration of from about 1.5 at. % to about 15 at. %, boron at a concentration of up to about 0.1 at. %, with the balance of the alloy being titanium. In addition to enhanced radiopacity compared to binary Ni—Ti alloys and improved workability, the Ni—Ti-RE alloy preferably exhibits superelastic behavior. A method of processing a Ni—Ti-RE alloy includes providing a nickel-titanium-rare earth alloy comprising nickel at a concentration of from about 35 at. % to about 65 at. %, a rare earth element at a concentration of from about 1.5 at. % to about 15 at. %, the balance being titanium; heating the alloy in a homogenization temperature range below a critical temperature; and forming spheroids of a rare earth-rich second phase in the alloy while in the homogenization temperature range.
摘要:
A method is disclosed of preparing a catalyst including providing a substrate and a first solution containing at least one promoter, contacting the substrate with the solution to obtain a catalyst containing at least one promoter, wherein the contacting of the substrate with the solution subjects the substrate to the addition of at least one promoter.
摘要:
A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5-15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen.
摘要:
A niobium-modified mordenite catalyst can be made from water soluble niobium precursors such as niobium oxalate and ammonium niobate(V) oxalate and can be used in toluene disproportionation reactions. Embodiments can provide a toluene conversion of at least 30 wt % of the toluene feed with selectivity to benzene above 40 wt % of the reaction product composition and to xylenes above 40 wt % of the reaction product composition and non-aromatics selectivity of less than 1.0 wt % of the reaction product composition.
摘要:
A system and method for analyzing data from a plurality of computer environments. The computer environments are authenticated and data is imported to a memory location. The data is converted into a uniform format to enable expedited searching by one or more authenticated users. The data may be marked so that a user may determine which computer environment provided the data. The system may also create one or more indexes of the data to assist one or more users in searching the data.
摘要:
Alkylation processes are described herein. The alkylation process generally includes contacting a first aromatic compound with an alkylation catalyst including a metal halide catalyst in the presence of an alkylating agent to form an alkylation output stream including a second aromatic compound and contacting at least a portion of the output stream with a transalkylation catalyst including a zeolite catalyst in the presence of the first aromatic compound to form a transalkylation output stream including the second aromatic compound.