Liu, IA
Chunyan Liu, Iowa City, IA US
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20160035236 | METHOD AND SYSTEM FOR CONTROLLING ABILITY ESTIMATES IN COMPUTER ADAPTIVE TESTING PROVIDING REVIEW AND/OR CHANGE OF TEST ITEM RESPONSES - An improved method is provided for maximizing accuracy of ability estimates while permitting a test taker to review and/or change responses in computer adaptive testing. One or more ability-dependent items are selected from a pool of adaptive items, the selected ability-dependent item matching interim ability estimates for an examinee. One or more ability-independent items are selected from a pool of non-adaptive items. The interim ability estimate can be generated after each iteration of responses to ability-dependent and/or ability-independent items. The ability-independent items can be randomly dispersed throughout the computer adaptive test. A prescribed ratio can be maintained between the ability-dependent items and ability-independent items for minimizing overestimation of the examinee's ability scores after reviewing and changing one or more test items in the computer adaptive test. Alternatively, ability-independent items can be selected after an incorrect response to an ability-dependent or ability-independent item at a predefined test item location. | 02-04-2016 |
Donglong Liu, Johnston, IA US
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20080234130 | Compositions providing tolerance to multiple herbicides and methods of use thereof - Methods and compositions are provided related to improved plants that are tolerant to more than one herbicide. Particularly, the invention provides plants that are tolerant of glyphosate and are tolerant to at least one ALS inhibitor, and methods of use thereof. The glyphosate/ALS inhibitor-tolerant plants comprise a polynucleotide that encodes a polypeptide that confers tolerance to glyphosate and a polynucleotide that encodes an ALS inhibitor-tolerant polypeptide. In specific embodiments, a plant of the invention expresses a GAT polypeptide and an HRA polypeptide. Methods to control weeds, improve plant yield, and increase transformation efficiencies are provided. | 09-25-2008 |
20090137395 | Maize event DP-098140-6 and compositions and methods for the identification and/or detection thereof - Compositions and methods related to transgenic glyphosate/ALS inhibitor-tolerant maize plants are provided. Specifically, the present invention provides maize plants having a DP-098140-6 event which imparts tolerance to glyphosate and at least one ALS-inhibiting herbicide. The maize plant harboring the DP-098140-6 event at the recited chromosomal location comprises genomic/transgene junctions having at least the polynucleotide sequence of SEQ ID NO:5 and/or 6. The characterization of the genomic insertion site of the DP-098140-6 event provides for an enhanced breeding efficiency and enables the use of molecular markers to track the transgene insert in the breeding populations and progeny thereof. Various methods and compositions for the identification, detection, and use of the maize DP-098140-6 events are provided. Methods and compositions for improving yield are further provided. | 05-28-2009 |
20090264290 | METHODS AND COMPOSITIONS FOR PROVIDING TOLERANCE TO MULTIPLE HERBICIDES - Methods and compositions are provided related to improved plants that are tolerant to more than one herbicide. Particularly, the invention provides plants that are tolerant of glyphosate and are tolerant to at least one ALS inhibitor, and methods of use thereof. The glyphosate/ALS inhibitor-tolerant plants comprise a polynucleotide that encodes a polypeptide that confers tolerance to glyphosate and a polynucleotide that encodes an ALS inhibitor-tolerant polypeptide. In specific embodiments, a plant of the invention expresses a GAT polypeptide and an HRA polypeptide. Methods to control weeds, improve plant yield, and increase transformation efficiencies are provided. | 10-22-2009 |
20100240059 | MAIZE EVENT DP-098140-6 AND COMPOSITIONS AND MEHTODS FOR THE IDENTIFICATION AND/OR DETECTION THEREOF - Compositions and methods related to transgenic glyphosate/ALS inhibitor-tolerant maize plants are provided. Specifically, the present invention provides maize plants having a DP-098140-6 event which imparts tolerance to glyphosate and at least one ALS-inhibiting herbicide. The maize plant harboring the DP-098140-6 event at the recited chromosomal location comprises genomic/transgene junctions having at least the polynucleotide sequence of SEQ ID NO:5 and/or 6. The characterization of the genomic insertion site of the DP-098140-6 event provides for an enhanced breeding efficiency and enables the use of molecular markers to track the transgene insert in the breeding populations and progeny thereof. Various methods and compositions for the identification, detection, and use of the maize DP-098140-6 events are provided. | 09-23-2010 |
20120157308 | METHODS AND COMPOSITIONS FOR PROVIDING TOLERANCE TO MULTIPLE HERBICIDES - Methods and compositions are provided related to improved plants that are tolerant to more than one herbicide. Particularly, the invention provides plants that are tolerant of glyphosate and are tolerant to at least one ALS inhibitor, and methods of use thereof. The glyphosate/ALS inhibitor-tolerant plants comprise a polynucleotide that encodes a polypeptide that confers tolerance to glyphosate and a polynucleotide that encodes an ALS inhibitor-tolerant polypeptide. In specific embodiments, a plant of the invention expresses a GAT polypeptide and an HRA polypeptide. Methods to control weeds, improve plant yield, and increase transformation efficiencies are provided. | 06-21-2012 |
20130288898 | METHODS AND COMPOSITIONS FOR PROVIDING TOLERANCE TO MULTIPLE HERBICIDES - Methods and compositions are provided related to improved plants that are tolerant to more than one herbicide. Particularly, the invention provides plants that are tolerant of glyphosate and are tolerant to at least one ALS inhibitor, and methods of use thereof. The glyphosate/ALS inhibitor-tolerant plants comprise a polynucleotide that encodes a polypeptide that confers tolerance to glyphosate and a polynucleotide that encodes an ALS inhibitor-tolerant polypeptide. In specific embodiments, a plant of the invention expresses a GAT polypeptide and an HRA polypeptide. Methods to control weeds, improve plant yield, and increase transformation efficiencies are provided. | 10-31-2013 |
Jean Liu, Johnston, IA US
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20090286253 | GENETIC LOCI ASSOCIATED WITH SCLEROTINIA TOLERANCE IN SOYBEAN - The invention relates to methods and compositions for identifying soybean plants that are tolerant, have improved tolerance or are susceptible to | 11-19-2009 |
Juan Liu, Johnston, IA US
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20080222753 | Manipulation of Ammonium Transporters (AMTS) to Improve Nitrogen Use Efficiency in Higher Plants - The present invention provides polynucleotides and related polypeptides of the protein AMT. The invention provides genomic sequence for the AMT gene. AMT is responsible for controlling nitrogen utilization efficiency in plants. | 09-11-2008 |
20100175150 | DOF (DNA BINDING WITH ONE FINGER) SEQUENCES AND METHODS OF USE - Methods and compositions are provided to improve nitrogen use efficiency in plants or plant parts, increase carbon fixation in a plant or plant part, increase grain yield or biomass production of the plant, and/or increase the stress tolerance of the plant. The compositions and methods of the invention modulate these various phenotypes by modulating the level of at least one Dof (for DNA binding with one finger) polypeptide having a Dof domain or a biologically active variant or fragment of a Dof domain. | 07-08-2010 |
20110225675 | MANIPULATION OF AMMONIUM TRANSPORTERS (AMTS) TO IMPROVE NITROGEN USE EFFICIENCY IN HIGHER PLANTS - The present invention provides polynucleotides and related polypeptides of the protein AMT. The invention provides genomic sequence for the AMT gene. AMT is responsible for controlling nitrogen utilization efficiency in plants. | 09-15-2011 |
20120284872 | MANIPULATION OF AMMONIUM TRANSPORTERS (AMTS) TO IMPROVE NUE IN HIGHER PLANTS - The present invention provides polynucleotides and related polypeptides of the protein AMT. The invention provides genomic sequence for the AMT gene. AMT is responsible for controlling nitrogen utilization efficiency in plants. | 11-08-2012 |
Sanzhen Liu, Ames, IA US
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20130184165 | GENOTYPING BY NEXT-GENERATION SEQUENCING - Provided herein is technology relating to genotyping and particularly, but not exclusively, to methods for genotyping one or more organisms by genome sequencing. | 07-18-2013 |
20130212741 | MOLECULAR CLONING OF BROWN-MIDRIB2 (bm2) GENE - The present invention relates to methods for altering the concentration or composition of lignin in a plant; a method of making a mutant plant having an altered level of MTHFR protein compared to that of a nonmutant plant; plants, mutant plants, and mutant plant seeds produced by these methods; a method of identifying a candidate plant suitable for breeding that displays an altered lignin concentration or composition phenotype; a transgenic plant having an altered level of MTHFR protein capable of determining the lignin concentration or composition in a plant compared to that of a nontransgenic plant; and seed produced from a transgenic plant. | 08-15-2013 |
20150344947 | GENOTYPING BY NEXT-GENERATION SEQUENCING - Provided herein is technology relating to genotyping and particularly, but not exclusively, to methods for genotyping one or more organisms by genome sequencing. | 12-03-2015 |
Shihuan Liu, Ames, IA US
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20130010774 | SYNCHRONOUS TRANSMISSION METHODS AND APPARATUS - Methods and apparatus for use in a wireless system are described where initiation of packet transmission is constrained in accordance to control actual packet transmission in a manner that reduces contention and possible collisions beyond that provided by lower layer resource contention mechanisms, e.g., 802.11 carrier sensing and/or transmission back-off timing mechanisms. Through higher level, e.g., MAC constraints, on packet transmission initiation, an air interface which employs carrier sensing can be used and controlled in a manner which reduces collisions and interference in applications where small packets, e.g., packets which can be transmitted in a fraction of the maximum permitted transmission time. The methods allow small packets in such systems to be transmitted on a periodic or semi-periodic basis in many cases. | 01-10-2013 |
20130195082 | METHOD AND APPARATUS FOR IMPROVING COEXISTENCE OF SYNCHRONOUS AND ASYNCHRONOUS NODES IN A SYNCHRONOUS MAC SYSTEM - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be configured to determine a plurality of slots for transmitting information including a plurality of first type slots and a plurality of second type slots where the second type slots have a longer duration that the first type slots. The apparatus may be configured to transmit information in a first type slot when a previous reception was successful and there is no other transmission expected to occur during a gap preceding the first type slot and during the first type slot. Additionally or in the alternative, apparatus may be configured to transmit information in a second type slot when at least one of the previous reception was unsuccessful or there is another transmission expected to occur during a gap preceding the first type slot or during the first type slot. | 08-01-2013 |
Sijun Liu, Ames, IA US
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20090055975 | Plant virus transmission inhibitor and methods - Provided is a peptide, peptide multimer or fusion protein containing such peptide which binds to the gut of sap-sucking insects, e.g., aphids. When bound, this peptide inhibits the binding of targeted virus to the insect gut. When this peptide or tandem repeat peptide is expressed (or is expressed as part of a fusion protein) in the fluids of transgenic plants, it is taken up by the insect with the sap, binds to gut receptors and thereby inhibits transmission of the virus from plant to plant via the insect vector. Thus, the use of such transgenic plants blocks or reduces the transmission of the targeted virus and others which share the peptide binding site within the insect gut among plants susceptible to the virus and thereby reduces losses due to viral infection. | 02-26-2009 |
20130097729 | Aphicidal Toxins and Methods - Provided are chimeric aphicidal and insecticidal toxin proteins comprising peptide, peptide multimer or fusion protein containing such peptide which binds to the gut of sap-sucking insects, e.g., aphids, thrips, leafhoppers, or other target interest. When bound, this peptide mediates the binding of the chimeric aphicidal or other insecticidal protein to the target insect gut. Also described are coding sequences, vectors, and transgenic plants genetically modified to contain and express such aphicidal or insecticidal proteins. Thus, the use of such transgenic plants reduces economic loss due to feeding by the target insect and also reduces loss due to plant diseases spread by the target insect. | 04-18-2013 |
Xiaoming Liu, Iowa City, IA US
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20110054247 | METHODS FOR CLONING FERRETS AND TRANSGENIC FERRET MODELS FOR DISEASES - The invention provides a transgenic Mustelidae in which a gene associated with a human disease or condition comprises a targeted genetic modification, and uses thereof. Also provided is a method to cryopreserve Mustelidae embryos or cells, and to enhance the number of live offspring from cryopreserved Mustelidae embryos. | 03-03-2011 |
Yinxiao Liu, Iowa City, IA US
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20130057569 | 2D-2D FUSION FOR INTERVENTIONAL GUIDANCE IN TRANS-CATHETER AORTIC VALVE IMPLANTATION - A method for fusing 2D fluoroscopic images with 2D angiographic images for real-time interventional procedure guidance includes using a 2-dimensional angiographic image to detect injection of a contrast agent into an anatomical structure, where the contrast agent first appears in a detected image frame, subtracting a background image from the detected image frame and binarizing the subtracted image frame to segment the anatomical structure from the subtracted image frame, registering the segmented anatomical structure with a predefined shape model of the anatomical structure to generate an anatomical mask, generating an anatomical probability map from the anatomical mask using intensity information from the subtracted image frame, where the anatomical probability map expresses a probability of a pixel in the subtracted image frame belonging to the anatomical structure, and fusing the angiographic image with one or more subsequently acquired 2-dimensional fluoroscopic images of the anatomical structure using the anatomical probability map. | 03-07-2013 |
20130060132 | AUTOMATIC DETECTION OF CONTRAST INJECTION - A method for automatically detecting the presence of a contrast agent in an x-ray image includes acquiring a preliminary x-ray image. A background image is estimated. The contrast agent is administered. A plurality of image frames is acquired. The background image is subtracted from each image frame. An image having a highest image intensity is selected. A predefined shape model is fitted to the selected image using a semi-global optimization strategy. The fitting of the shape model is used to fit the shape model to each of the subtracted images. A feature value is calculated for each image frame based on pixel intensities of each pixel fitted to the shape model for the corresponding subtracted image. An image frame of peak contrast is determined by selecting the image frame with the greatest feature value. | 03-07-2013 |
Yufa Liu, West Des Moines, IA US
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20100280286 | Process For The Preparation of Beta and Alpha Cryptoxanthin - The present invention relates to a process for converting lutein and/or lutein esters to (3R)-β-cryptoxanthin and (3R,6′R)-α-cryptoxanthin, suitable for human consumption as dietary supplements, by employing safe and environmentally friendly reagents. (3R)-β-Cryptoxanthin and (3R,6′R)-α-cryptoxanthin are two rare food carotenoids that are not commercially available and the former exhibits vitamin A activity. In the first synthetic step, commercially available lutein and/or lutein esters are transformed into a mixture of dehydration products of lutein (anhydroluteins) in the presence of a catalytic amount of an acid. The resulting anhydroluteins are then converted to (3R)-β-cryptoxanthin (major product) and (3R,6′R)-α-cryptoxanthin (minor product) by heterogeneous catalytic hydrogenation employing transition elements of group VIII (Pt, Pd, Rh supported on alumina or carbon) in a variety of organic solvents under atmospheric pressure of hydrogen and at temperatures ranging from −15° C. to 40° C. Among these catalysts, Pt supported on alumina at 40° C. in ethyl acetate provides the best yield of (3R)-β-cryptoxanthin and (3R,6′R)-α-cryptoxanthin. Several homogeneous catalysts can also promote the regioselective hydrogenation of anhydroluteins to a mixture of (3R)-β-cryptoxanthin and (3R,6′R)-α-cryptoxanthin in low to moderate yields. The catalysts may be transition metal complexes such as palladium acetylacetonate, Rh(Ph | 11-04-2010 |
Yunlong Liu, Iowa City, IA US
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20150367144 | ADVANCED ROTATING-SHIELD BRACHYTHERAPY AND PLANNING OF THE SAME - Systems and methods for rotating shield brachytherapy. In an aspect, some of the systems and methods can be used to facilitate shield selection for use in rotating shield brachytherapy. In an aspect, the invention is a shielded needle or catheter system with a rotational controller for delivering radioisotope-based interstitial rotating shield brachytherapy (I-RSBT), In an aspect, I-RSBT needles can deliver dose distributions that can be non-radially symmetric about each needle, enabling reduced doses to sensitive normal tissues. Further provided are methods and systems for selecting an emission angle for use in S-RSBT and for sequencing the rotating shields. Further provided are methods and system for the multiple application of M-RSBT in a single setting. | 12-24-2015 |