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Switchable carbamate coagulants to improve recycling ionic liquid from biomass solutions

Green Chemical Engineering 2021年第4期2卷 384-391页

作者： Julia L.Shamshina Ying Qin Ken Belmore Daniel T.Daly Robin D.rogers Fiber and Biopolymer Research Institute Department of Plant and Soil ScienceTexas Tech UniversityLubbockTX79409USA Alabama Institute for Manufacturing Excellence The University of AlabamaTuscaloosaAL35487USA Department of Chemistry and Biochemistry The University of AlabamaTuscaloosaAL35487USA College of Arts&Sciences The University of AlabamaTuscaloosaAL35487USA Solutions Inc.P.O.Box 2206TuscaloosaAL35403USA

A reversible amine-carbamate approach has been developed to reduce the use of antisolvents such as water in the coagulation of biopolymers from ionic liquid(IL)solution and thus improve the economy of IL *** and chitin were recovered from 1-ethyl-3-methylimidazolium acetate([C_(2)mim][OAc])solution by introducing the miscible amines triethanolamine(TEA),ethylenediamine(EDA),or butylamine(BA)and bubbling CO_(2) at 40℃ and atmospheric pressure through the solutions to form carbamate salts in situ which resulted in biopolymer *** gave the best results because of its low boiling point and low viscosity,which benefited both biopolymer recovery and IL *** films and fibers could be formed by extrusion of an MCC/[C_(2)mim]-[OAc]solution into a coagulating bath comprised of a 1:1 M mixture of[C_(2)mim][OAc]and butylammonium butylcarbamate(BA-carbamate).The cellulose,IL,amine,and CO_(2) were easily separated,although the cellulose recovered required some water washings to remove traces of *** to 96.4%of the[C_(2)mim][OAc]could be recovered,76.2%from the coagulation bath and 20.2%from the water *** recycled IL was suitable for another cycle of cellulose dissolution and extrusion and 84.6%of the IL used for the second cycle was *** further work is needed,not the least of which will be reducing the amount of water needed for washing steps,some promising features of this process point the way for new directions for more economically viable IL recycling processes in biomass treatment with ILs.

关键词： Carbamate Ionic liquid Recovery Switchable Coagulation Biopolymers Carbamates IL recycle

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Targeting ERK1/2-calpain 1-NF-κB signal transduction in secondary tissue damage and astrogliosis after spinal cord injury

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Frontiers in Biology 2015年第5期10卷 427-438页

作者： Xin Xin Yu Vimala Bondada Colin rogers Carolyn A. Meyer Chen Guang Yu Spinal Cord and Brain Injury Research Center Department of Anatomy and Neurobiology University of Kentucky College of MedicineLexington KY 40536-0509 USA

Neuronal damage, glial inflammation, and astrogliosis/astroglial scar formation are major secondary injury mechanisms that are significant contributors to functional deficits after spinal cord injury （SCI）. The objectives of the study were to evaluate the distinct roles of ERK2 vs. ERK1/2 and ERK1/2-calpain 1 -NF-r,B signal transduction in the tissue damage and astrogliosis/astroglial scar formation following SCI in rats. RNAi approaches, pharmacological intervention （U0126）, Western blot analysis, immunofluorescence analysis, and histological assessment were used to target ERK1/2-calpain 1-NF-KB signal transduction pathway for neuroprotection. Histological staining analysis demonstrated that selectively reducing pERK2 using ERK2 siRNA, but not inhibition of pERK1/2 with U0126, significantly reduced lesion volume and improved total tissue sparing, white matter sparing, and gray matter sparing in spinal cord two weeks after contusive SCI. An ERK1/2-calpain 1-NF-KB signal transduction pathway was involved in the astroglial scar formation after SCI. Blockade of ERK1/2 by U0126 decreased calpain 1 expression 4 h following SCI. Selective calpain 1 reduction by lentiviral shRNA attenuated astroglial NF-κB activity and astroglial scar formation after SCI in rats. Taken together, these results demonstrate the involvement of individual ERK2 and caipain 1 signaling pathways in tissue damage and astrogliosis/astroglial scar formation in animal models of SCI. Therefore, targeting individual ERK and its downstream signal transduction of calpain 1-NF-κB may provide greater potential as novel therapeutics for minimizing tissue damage and astroglial scar formation following SCI.

关键词： calpain 1 ERK1/2 RNAi neurodegeneration astrogliosis spinal cord injury

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Control of Discrete Linear Repetitive Processes with Non-causal Dynamics

Control of Discrete Linear Repetitive Processes with Non-cau...

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第二十七届中国控制会议

作者： Cichy B. Galkowski K. rogers E. Kummert A. Institute of Control and Computation Engineering University of Zielona Gora School of Electronics and Computer Science University of Southampton Faculty of Electrical Information and Media EngineeringUniversity of Wuppertal

ISBN: (纸本)9787900719706

Repetitive processes propagate information propagation in two independent directions and are of both systems theoretic and applications *** cannot be controlled by direct extension of existing techniques from either standard（termed 1D here） or（often） 2D systems *** this paper we propose,motivated by critical features in the dynamics of some examples a model which has non-causal elements and then develop new results on the stability and control of examples which it represents.

关键词： Stability analysis Rubust control LMI

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Quantum super-oscillation of a single photon

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Light(Science & Applications) 2016年第1期5卷 577-582页

作者： Guang Hui Yuan Stefano Vezzoli Charles Altuzarra Edward TF rogers Christophe Couteau Cesare Soci Nikolay I Zheludev The Photonics Institute Centre for Disruptive Photonic TechnologiesNanyang Technological UniversitySingapore 637371Singapore CINTRA CNRS-NTU-ThalesCNRS UMI 3288Singapore 637553Singapore Optoelectronics Research Centre and Centre for Photonic Metamaterials University of SouthamptonSouthampton SO171BJUK Institute for Life Sciences University of SouthamptonSouthampton SO171BJUK Laboratory for Nanotechnology Instrumentation and OpticsICD CNRS UMR 6281University of Technology of TroyesTroyes 10000France

Super-oscillation is a counterintuitive phenomenon describing localized fast variations of functions and fields that happen at frequencies higher than the highest Fourier component of their *** physical implications of this effect have been studied in information theory and optics of classical fields,and have been used in super-resolution *** a general phenomenon of wave dynamics,super-oscillations have also been predicted to exist in quantum *** we report the experimental demonstration of super-oscillatory behavior of a single-quantum object,a *** super-oscillatory behavior is demonstrated by tight localization of the photon wavefunction after focusing with an appropriately designed slit mask to create an interference pattern with a sub-diffraction hotspot(~0.45λ).Such quantum super-oscillation can be used for low-intensity far-field super-resolution imaging techniques even down to single-photon counting regime,which would be of interest to quantum physics and non-invasive and label-free biological studies.

关键词： energy backflow single-photon wavefunction super-oscillation super-resolution

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Contact radius of stamps in reversible adhesion

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Theoretical & Applied Mechanics Letters 2011年第1期1卷 7-9页

作者： Seok Kim Andrew Carlson Keh-Chih Hwang John A.rogers Department of Materials Science and Engineering Beckman Instituteand Seitz Materials Research LaboratoryUniversity of Illinois at Urbana-ChampaignUrbanaIllinois 61801 Department of Engineering Mechanics Tsinghua University

A mechanics model is developed for the contact radius of stamps with pyramid tips in transfer *** is important to the realization of reversible control of adhesion,which has many important applications,such as climbing robots,medical tapes,and transfer printing of *** contact radius is shown to scale linearly with the work of adhesion between the stamp and the contacting surface,and inversely with the plane-strain modulus of the stamp. It also depends on the cone angle and tip radius of the stamp,but is essentially independent of details of the tip geometry.

关键词： contact mechanics reversible adhesion contact radius

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Orthotopic Heart Auto-Transplantation in a Swine Model

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World Journal of Cardiovascular Surgery 2022年第9期12卷 200-206页

作者： Michael P. rogers Gregory Fishberger Nick Martini Margaret Baldwin Lei Wang Wei Chen Ruisheng Liu Lucian Lozonschi Division of Cardiothoracic Surgery Department of Surgery University of South Florida Morsani College of Medicine Tampa FL USA Department of Comparative Medicine University of South Florida Tampa FL USA Department of Molecular Pharmacology and Physiology University of South Florida Morsani College of Medicine Tampa FL USA Department of Physics College of Arts and Sciences University of South Florida Tampa FL USA

Background and Aim: The porcine heart bears the best resemblance to the human heart and remains the preferred preclinical model for anatomical, physiological, and medical device studies. In an effort to study phenomena related strictly to ischemia reperfusion and donor preservation protocols, it is essential to avoid the immune responses related to allotransplantation. Orthotopic auto-transplantation is a unique strategy to the field of cardiac transplantation for ex vivo experimentation. Nevertheless, auto-transplantation carries its own technical challenges related to insufficient length of the great vessels that are to be transected and re-anastomosed. Methods: A novel method for orthotopic cardiac auto-transplantation in the porcine model was developed and was described herein. Porcine models were used for ex vivo experimentation of a novel device to study ischemia reperfusion injury. Results: A total of five porcine models were used for ex vivo experimentation of a novel device to mitigate ischemia reperfusion injury and determine effects of donor preservation. Modifications to routine cardiac transplantation protocols to allow for successful auto-transplantation are described. Conclusion: Orthotopic cardiac auto-transplantation in the porcine model is a plausible and technically feasible method for reliable study of ischemia reperfusion injury and donor preservation protocols. Here, we describe methods for both direct orthotopic porcine cardiac auto-transplantations as well as a simplified protocol that can be substituted for full surgical auto-transplantation for the studies of preservation of donor hearts.

关键词： Porcine Cardiac Surgery Cardiac Transplantation

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Bone Morphogenic Protein 9(BMP9)/Growth Differentiation Factor 2(GDF2)modulates mouse adult hippocampal neurogenesis by regulating the survival of early neural progenitors

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Genes & Diseases 2023年第4期10卷 1175-1179页

作者： Mary Rose rogers Wei Zeng Xian Zhang Ruidong Li Qiang Wei Yuhan Kong Piao Zhao Guozhi Zhao Yonghui Wang Jiamin Zhong Yi Zhu Rex C.Haydon Hue H.Luu Russell R.Reid Daniel A.Peterson Michael J.Lee Tong-Chuan He Molecular Oncology Laboratory Department of Orthopaedic Surgery and Rehabilitation MedicineThe University of Chicago Medical CenterChicagoIL 60637USA Graduate Program Committee on Genetics Genomics and System BiologyThe University of ChicagoChicagoIL 60637USA Department of Interventional Neurology The First Dongguan Affiliated HospitalGuangdong Medical UniversityDongguanGuangdong 523475China Department of Neurology The Second Affiliated Hospital of Jianghan UniversityWuhanHubei 430000China Department of Orthopaedic Surgery The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Clinical Laboratory Medicine Rehabilitation MedicineOrthopaedic Surgery and UrologyThe First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Endocrinology Shanghai Jiao-Tong University School of MedicineShanghai 200000China Ministry of Education Key Laboratory of Diagnostic Medicine and Department of Clinical BiochemistryThe School of Laboratory MedicineChongqing Medical UniversityChongqing 400016China Department of Orthopaedic Surgery Beijing HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Laboratory of Craniofacial Suture Biology and Development Department of Surgery Section of Plastic SurgeryThe University of Chicago Medical CenterChicagoIL 60637USA Center for Stem Cell and Regenerative Medicine Rosalind Franklin University of Medicine and ScienceNorth ChicagoIL 60064USA

Adult neurogenesis occurs in two specialized regions of the mammalian brain,the subventricular zone(SVZ)and the subgranular zone(SGZ)of the dentate gyrus(DG).^(1)Adult hippocampal neural stem cells(NSCs),referred to as Type 1 cells represented by radial glia-like cells(RGLs),generate Type 2 cells that are divided into Type 2a and Type 2 b subpopulations,the latter of which give rise to Type 3 cells(neuroblasts).

关键词： neural progenitor ventricular

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Message from the Editors

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Chinese Journal of Applied Linguistics 1997年第1期20卷 5-6页

作者： Ann rogers Guest Editor

I was very pleased to be invited to be a guest editor for Issue 29 of Teaching English In ***,who edited the last two issues,returned to the UK In *** behalf of all our readersand contributors I would like to thank Jim for his excellent work and wish him and his family ally thebest for 1997.I would also like to thank my co-guest editor,Peter Hare,for undertaking the difficultjob of selecting the best articles from the hundreds we receive.

关键词： Message from the Editors very

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Trends of seasonal forage yield changes of triticale in the southern Great Plains of the United States

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Grassland Research 2022年第3期1卷 166-173页

作者： Tadele T.Kumssa Joshua D.Anderson James P.Johnson Shawn Norton Malay C.Saha Michael A.Trammell James K.rogers Twain J.Butler Xue-Feng Ma Noble Research Institute ArdmoreOklahomaUSA University of Illinois at Urbana-Champaign UrbanaIllinoisUSA Oklahoma State University ShawneeOklahomaUSA Forage Genetics International West SalemWisconsinUSA

Background:The focus of triticale breeding in the southern Great Plains of the United States has been to increase forage yield for autumn-winter seasons when most other forage species are *** study aims to estimate the trends of seasonal yield changes over ***:Yield trials had been conducted in a randomized complete block design for up to two *** yield changes over time were estimated using linear regression ***:The analysis revealed a significant positive relation between autumn forage yield(relative to common checks)and calendar years when the trials were *** estimated improvement of autumn forage yield was about 1.9%per year on medium and heavy soil at Ardmore,Oklahoma,and about 5.4%per year on light soil at Burneyville,***,winter forage yield change was minimal and the spring forage yield increase was negative,although this decline was not *** forage yield improvements were about 0.6%and 0.7%per year at Ardmore and Burneyville,*** results were also observed when years of cultivars'introduction were used ***:The results indicate a significant gain in autumn forage yield,but a minor gain in the total forage yield due to the yield tradeoff between the autumn and spring seasons.

关键词： cultivar improvement forage yield grazing tolerance regrowth triticale

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Characterization and transcriptional analyses of cDNAs encoding three trypsin- and chymotrypsin-like proteinases in CrylAb-susceptible and CrylAb-resistant strains of sugarcane borer, Diatraea saccharalis

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Insect Science 2013年第4期20卷 485-496页

作者： Yunlong Yang Yu Cheng Zhu James Ottea Claudia Husseneder B. rogers Leonard Craig Abel Randall Luttrell Fangneng Huang Department of Entomology Louisiana State University Agricultural Center Baton Rouge Louisiana Southern Insect Management Research Unit Agricultural Research Service United States Department of Agriculture Stoneville Mississippi Corn Insects and Crop Genetics Research Unit Agricultural Research Service United States Department of Agriculture Ames Iowa USA

Diatraea saccharalis is a major corn borer pest. Midgut serine proteinases are essential for insect growth and development. Alteration of midgut proteinases is re- sponsible for Bt resistance development in some species. To clone midgut trypsin and chymotrypsin cDNAs and to test if the CrylAb resistance in D. saccharalis is associ- ated with changes in midgut proteinases, total midgut tryptic and chymotryptic activities, cDNA sequences, and gene expressions of three trypsin and three chymotrypsin genes were comparatively examined between Cry 1 Ab-susceptible （Cry 1 Ab- S S） and Cry 1 Ab-resistant （Cry 1 Ab-RR） strains. Full-length cDNAs encoding three trypsin- and three chymotrypsin- like proteinases were sequenced from CrylAb-SS and CrylAb-RR larvae. These cDNAs code for active forms of midgut serine proteinases with all fimctional motifs, includ- ing signal peptide, conserved His-Asp-Ser for the catalytic triad, three pairs of cysteines for disulfide bridge configurations, and conserved substrate specificity determination residues. In general, cDNA and putative protein sequences are highly similar between CrylAb-SS and CrylAb-RR strains, except for a few nucleotide and predicted amino acid substitutions, whose function need to be further clarified. Total trypsin and chymotrypsin activities were also similar between CrylAb-SS and CrylAb-RR strains. Transcriptional levels of the trypsin and chymotrypsin genes had numerical difference between Cry 1 Ab-SS and CrylAb-RR strains, but the difference was not statistically significant. Data suggest that the development of CrylAb resistance in D. saccharalis was not significantly as- sociated with these trypsins and chymotrypsins. Results clarified the role of six midgut proteinases and provided a foundation for continuing examination of potential involvement of other midgut proteinases in Bt resistance development and other important biochemical processes.

关键词： Bt cDNA chymotrypsin enzymatic activity resistance trypsin

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