Patents Assigned to Texas State University - San Marcos
-
Patent number: 10599638Abstract: A method for identifying maximal independent sets in parallel may include, on a processor, accessing data representing an undirected graph, generating a respective initial priority value for each vertex, dependent on the vertex degree and an average degree for vertices in the graph, and recording an indication of the initial priority value for each vertex. The method may include determining, for multiple vertices, that no neighbor vertex has a priority value that is higher than that of the vertex. In response, the method may include recording respective indications that each neighbor vertex connected is not to be included in a maximal independent set for the undirected graph and recording an indication that the vertex is to be included in the maximal independent set. The determinations and recordings may be performed in parallel by respective processing elements of the processor. The processor may be a GPU.Type: GrantFiled: February 6, 2017Date of Patent: March 24, 2020Assignee: The Texas State University-San MarcosInventors: Martin Burtscher, Sindhu Devale
-
Patent number: 10504725Abstract: The disclosure relates to a method for creating a nanoscale structure. The method includes forming a window in a semiconductor structure, the semiconductor structure comprising a substrate, a first semiconductor layer, and a mask layer; depositing a second semiconductor layer within the window such that a gap remains between the second semiconductor and a portion of the window; and regrowing the first semiconductor layer such that the first semiconductor layer fills the gap.Type: GrantFiled: October 19, 2016Date of Patent: December 10, 2019Assignee: The Texas State University-San MarcosInventor: Edwin L. Piner
-
Silica nanoaggregates and organosilicon complexes and methods of forming them from biomass materials
Patent number: 9359214Abstract: By controlling the pre-treatment of biomass materials and pyrolysis conditions, silica samples with various surface areas and levels of crystallinity were synthesized. With proper treatment, biogenic silica nanoaggregate (25-30 nm in diameter) can be synthesized from biomass materials. The characterizations revealed that the silica nanoaggregates were composed of smaller primary silica nanoparticles (ca. 4.2 nm in diameter). Under controlled melting catalyzed by metal salt cations, the silica nanoaggregates may be fuse to form semi-crystalline porous silica frameworks with tunable pore size and structural integrity. Organosilicon complexes were synthesized from the bio derived silica nanoaggregates.Type: GrantFiled: February 28, 2012Date of Patent: June 7, 2016Assignee: Texas State University-San MarcosInventors: Luyi Sun, Weixing Wang -
Patent number: 9023230Abstract: The present invention relates facile method to synthesize magnetic PNCs with highly dispersed and narrow size distributed NPs. The PNCs have highly thermal stability and unique electrical and dielectric properties.Type: GrantFiled: November 29, 2011Date of Patent: May 5, 2015Assignees: Lamar University, A Component of the Texas State University System, An Agency of the State of Texas, Texas State University San Marcos, A Component of the Texas State University System, An Agency of the State of TexasInventors: Luyi Sun, Zhanhu Guo, Jiahua Zhu, Suying Wei
-
Publication number: 20140363361Abstract: The disclosure provides an LS methane hydrate containing a plurality of methane hydrate crystals and lignosulfonate. The disclosure also provides a method of making an LS methane hydrate by combining methane gas, liquid or solid water, and LS at controlled temperature and starting pressure for a time sufficient to form LS methane hydrate. The disclosure further provides a method of producing energy from an LS methane hydrate by providing an LS methane hydrate directly to a combustion chamber, whereby methane in the methane hydrate and LS are converted to energy in the combustion chamber and water in the methane hydrate is converted to steam. The disclosure additionally provides a method of releasing methane from an LS methane hydrate by heating an LS methane hydrate.Type: ApplicationFiled: August 26, 2014Publication date: December 11, 2014Applicant: THE TEXAS STATE UNIVERSITY-SAN MARCOSInventors: Weixing Wang, Luyi Sun
-
SILICA NANOAGGREGATES AND ORGANOSILICON COMPLEXES AND METHODS OF FORMING THEM FROM BIOMASS MATERIALS
Publication number: 20140057108Abstract: By controlling the pre-treatment of biomass materials and pyrolysis conditions, silica samples with various surface areas and levels of crystallinity were synthesized. With proper treatment, biogenic silica nanoaggregate (25-30 nm in diameter) can be synthesized from biomass materials. The characterizations revealed that the silica nanoaggregates were composed of smaller primary silica nanoparticles (ca. 4.2 nm in diameter). Under controlled melting catalyzed by metal salt cations, the silica nanoaggregates may be fuse to form semi-crystalline porous silica frameworks with tunable pore size and structural integrity. Organosilicon complexes were synthesized from the bio derived silica nanoaggregates.Type: ApplicationFiled: February 28, 2012Publication date: February 27, 2014Applicant: Texas State University - San MarcosInventors: Luyi Sun, Weixing Wang -
Publication number: 20140005415Abstract: A facile mechanochemical intercalation approach was adopted to immobilize ionic liquids into layered materials. The immobilized ionic liquids were found to be useful as catalysts for the coupling reaction of CO2 and propylene oxide to synthesize propylene carbonate. The immobilized ionic liquid exhibited similar reactivity as the free ionic liquid. Overall, the 10 mechanochemical approach proves to be effective in immobilizing ionic liquids in layered compounds and thus may expand the applications of ionic liquids and, meanwhile, improve catalyst separation and recycling.Type: ApplicationFiled: December 7, 2011Publication date: January 2, 2014Applicant: TEXAS STATE UNIVERSITY-SAN MARCOSInventors: Luyi Sun, Yuezhong Meng, Min Xiao, Hang Hu, Jarrett Clay Martin
-
Publication number: 20130209682Abstract: A coating composition for metal or refractories includes a polysilazane resin; and one or more additives that alter the thermal conductivity and/or the abrasion resistance of the cured polysilazane resin. The coating composition may be applied to a metal or refractory material substrate and heated to form a ceramic layer on the substrate. The ceramic layer exhibits lower thermal conductivity and increased abrasion resistance.Type: ApplicationFiled: August 17, 2011Publication date: August 15, 2013Applicant: TEXAS STATE UNIVERSITY SAN MARCOS, A COMPONENT OF THE TEXAS STATE UNIVERSITY SYSTEMInventors: John L. Massingill, JR., Clois E. Powell, Robert B. Habingreither, Ray G. Cook
-
Publication number: 20090023885Abstract: According to the invention, an amorphous CBDO copolymer (as described in U.S. Pat. No. 5,705,575, issued Jan. 6, 1998, which U.S. patent is incorporated herein by reference in its entirety) is treated to impart high impact resistance, also called impact strength.Type: ApplicationFiled: July 15, 2008Publication date: January 22, 2009Applicant: Texas State University - San MarcosInventors: Gary W. Beall, Jesse R. Hancock, Chad J. Booth