Iowa State University of Science and Technology, more commonly known as Iowa State University, Iowa State, or ISU, a Land grant of the Iowa university system, is a public land-grant and space-grant research university located in Ames, Iowa, United States. Until 1959 it was known as the Iowa State College of Agriculture and Mechanic Arts.Founded in 1858 and coeducational from its start, Iowa State became the nation’s first designated land-grant institution when the Iowa Legislature accepted the provisions of the 1862 Morrill Act on September 11, 1862, making Iowa the first state in the nation to do so. Iowa State's academic offerings are administered today through eight colleges, including the graduate college, that offer over 100 bachelor's degree programs, 112 master's degree programs, and 83 at the Ph.D. level, plus a professional degree program in Veterinary Medicine.ISU is classified as a Research University with very high research activity by the Carnegie Foundation for the Advancement of Teaching. The university is a group member of the prestigious American Association of Universities and the Universities Research Association, and a charter member of the Big 12 Conference. Wikipedia.
Iowa State University | Date: 2016-11-03
Elastomer-based soft-robotic micro-tentacles capable of winding around and holding microscale objects and methods of fabricating same are provided. To realize the thin, highly deformable microtubes, a fabrication technique based on in situ thermal solidification of PDMS dip-coated around a cylindrical template and direct peeling of the cured structure is presented. This process is capable to asymmetrize the microtubes cross-sectional shape and enable the microtube to bend up to a single turn. To amplify the bending into a life-like, multi-turn spiraling motion, a semi-analytical model to shape-engineer the microtube and turn it into a micro-tentacle was produced. As a result, a hump is added to the microtube to enable the multi-turn spiraling motion.
Iowa State University | Date: 2016-11-10
Various embodiments disclosed relate to isomerization of muconic acid. In various embodiments, the present invention provides a method of forming trans,trans-muconic acid. The method includes heating a starting material composition to form a product composition including trans,trans-muconic acid. The starting material composition includes cis,cis-muconic acid, cis,trans-muconic acid, or a combination thereof. The starting material composition also includes an electrophilic compound, an organic solvent, or a combination thereof.
Iowa State University | Date: 2016-11-10
Various embodiments disclosed relate to electrochemical isomerization of muconic acid. In various embodiments, the present invention provides a method to prepare trans,trans-muconic acid. The method can include passing current through a catalytic cathode in a reactor including an aqueous acidic solution including cis,trans-muconic acid, a supporting electrolyte, and an anode, so as to isomerize the cis,trans-muconic acid to yield a product including trans trans-muconic acid.
Iowa State University | Date: 2016-11-10
The present invention relates to a polymer comprising a repeating group having the structure of formula (I) wherein R, R^(1), R^(2), R^(3), R^(4), X, and s are as described herein and salt thereof. Also disclosed is a process of synthesizing such polymers.
Iowa State University | Date: 2016-10-24
A particle usable as T_(1 )and T_(2 )contrast agents is provided. The particle is a gadolinium silicide (Gd_(5)Si_(4)) particle that is ferromagnetic at temperatures up to 290 K and is less than 2 m in diameter. An MRI contrast agent that includes a plurality of gadolinium silicide (Gd_(5)Si_(4)) particles that are less than 1 m in diameter is also provided. A method for creating gadolinium silicide (Gd_(5)Si_(4)) particles is also provided. The method includes the steps of providing a Gd_(5)Si_(4 )bulk alloy; grinding the Gd_(5)Si_(4 )bulk alloy into a powder; and milling the Gd_(5)Si_(4 )bulk alloy powder for a time of approximately 20 minutes or less.
Iowa State University | Date: 2016-10-26
A coil configuration and method for transcranial magnetic stimulation enabling stimulation of deep regions of the brain without excessively stimulating the cortex is provided. The coil configuration utilizes at least one coil to produce an off-plane magnetic field to enhance the magnetic field from a top TMS coil. In one configuration three coils, referred to as the Triple Halo Coil and oriented at +30, 0, and 30 relative to the plane of the TMS coil, are used. In another configuration a single variable position coil referred to as the Variable Halo Coil and positionable vertically and/or angularly is used.
Iowa State University | Date: 2017-03-29
The present invention relates to a thermoplastic copolymer, block copolymer, and statistical copolymer comprising plural acrylated polyol monomeric units having different degrees of acrylation of hydroxyl groups. The acrylated polyol monomeric units have an average degree of acrylation greater than 1 and less than the number of the hydroxyl groups of the polyol. The present invention also relates to a method of making the thermoplastic copolymer, block copolymer, and statistical copolymer, and using them in various applications, such as asphalt rubber modifiers, adhesives, or an additive in a tracking fluid for oil tracking.
Batelle Memorial Institute, Eck Industries Inc., Lawrence Livermore National Laboratory and Iowa State University | Date: 2016-07-07
A cast alloy includes aluminum and from about 5 to about 30 weight percent of at least one material selected from the group consisting of cerium, lanthanum, and mischmetal. The cast alloy has a strengthening Al_(11)X_(3 )intermetallic phase in an amount in the range of from about 5 to about 30 weight percent, wherein X is at least one of cerium, lanthanum, and mischmetal. The Al_(11)X_(3 )intermetallic phase has a microstructure that includes at least one of lath features and rod morphological features. The morphological features have an average thickness of no more than 700 um and an average spacing of no more than 10 um, the microstructure further comprising an eutectic microconstituent that comprises more than about 10 volume percent of the microstructure.
Howell S.H.,Iowa State University
Annual Review of Plant Biology | Year: 2013
Endoplasmic reticulum (ER) stress is of considerable interest to plant biologists because it occurs in plants subjected to adverse environmental conditions. ER stress responses mitigate the damage caused by stress and confer levels of stress tolerance to plants. ER stress is activated by misfolded proteins that accumulate in the ER under adverse environmental conditions. Under these conditions, the demand for protein folding exceeds the capacity of the system, which sets off the unfolded protein response (UPR). Two arms of the UPR signaling pathway have been described in plants: one that involves two ER membrane-associated transcription factors (bZIP17 and bZIP28) and another that involves a dual protein kinase (RNA-splicing factor IRE1) and its target RNA (bZIP60). Under mild or short-term stress conditions, signaling from IRE1 activates autophagy, a cell survival response. But under severe or chronic stress conditions, ER stress can lead to cell death. © Copyright ©2013 by Annual Reviews. All rights reserved.
Johnston D.C.,Iowa State University
Advances in Physics | Year: 2010
The response of the worldwide scientific community to the discovery in 2008 of superconductivity at Tc = 26 K in the Fe-based compound LaFeAsO1-xFx has been very enthusiastic. In short order, other Fe-based superconductors with the same or related crystal structures were discovered with Tc up to 56 K. Many experiments were carried out and theories formulated to try to understand the basic properties of these new materials and the mechanism for Tc. In this selective critical review of the experimental literature, we distill some of this extensive body of work, and discuss relationships between different types of experiments on these materials with reference to theoretical concepts and models. The experimental normal-state properties are emphasized, and within these the electronic and magnetic properties because of the likelihood of an electronic/magnetic mechanism for superconductivity in these materials. © 2010 Taylor & Francis.