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A Two-Step Growth Curve: Approach to the von Bertalanffy and Gompertz Equations

Advances in Pure Mathematics 2016年第5期6卷 321-330页

作者： Laura.rogers-Bennett Donald W. rogers California Department of Fish and Wildlife and Karen C. Drayer Wildlife Health Center UC Davis CA USA Bodega Marine Laboratory Bodega Bay CA USA Chemistry Department Long Island University Brooklyn NY USA Friday Harbor Laboratories Whiteley Center University of Washington Friday Harbor WA USA

Many curves have been proposed and debated to model individual growth of marine invertebrates. Broadly, they fall into two classes, first order (e.g. von Bertalanffy) and sigmoidal (e.g. Gompertz). We provide an innovative approach which demonstrates that the growth curves are not mutually exclusive but that either may arise from a simple three-stage growth model with two steps (k1 and k2) depending on the ratio of the growth parameters . The new approach predicts sigmoidal growth when is close to 1, but if either growth from stage A to stage B or B to C is fast relative to the other, the slower of the two steps becomes the growth limiting step and the model reduces to first order growth. The resulting curves indicate that there is a substantial difference in the estimated size at time t during the period of active growth. This novel two-step rate model generates a growth surface that allows for changes in the rate parameters over time as reflected in the new parameter n(t) = k1(t) - k2(t). The added degree of freedom brings about individual growth trajectories across the growth surface that is not easily mapped using conventional growth modeling techniques. This two (or more) stage growth model yields a growth surface that allows for a wide range of growth trajectories, accommodating staged growth, growth lags, as well as indeterminate growth and can help resolve debates as to which growth curves should be used to model animal growth. This flexibility can improve estimates of growth parameters used in population models influencing model outcomes and ultimately management decisions.=

关键词： Growth Model Growth Surface Rate Equation Staged Growth Population Models

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Susceptibility of field populations of sugarcane borer from non-Bt and Bt maize plants to five individual Cry toxins

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Insect Science 2012年第5期19卷 570-578页

作者： Fangneng Huang Mukti N. Ghimire B. rogers Leonard Yu-Cheng Zhu Graham P. Head Department of Entomology Louisiana State University Agricultural Center Baton Rouge Macon Ridge Research Station Louisiana State University Agricultural Center Winnsboro Louisiana Jamie Whitten Delta States Research Center USDA-ARS Stoneville Mississippi Monsanto Company St. Louis Missouri USA

Sugarcane borer, Diatraea saccharalis （E）, is a major target of transgenic maize expressing Bacillus thuringiensis （Bt） proteins in South America and the US mid- south region. Resistance development in target pest populations is a major threat to the sustainable use of Bt crops. In our field trials in 2009, a significant number of live borers and plant injury fi＇om D. saccharalis were observed in an experimental SmartStaxTM maize line. The objective of this study was to assess the relative susceptibility of two field popula- tions ofD. saccharalis collected from non-Bt and Bt maize plants containing SmartStaxTM traits to five individual Cry proteins. The five Bt proteins included two proteins （Cry 1A. 105 and Cry2Ab2） that were expressed in SmartStaxTM maize plants and three other common Bt proteins （Cry 1Aa, Cry 1Ab and Cry l Ac） that were not produced in SmartStaxTM. Larval mortality and growth inhibition on Bt diet of the fourth generation after field collections were evaluated 7 days after release of neonates on the diet surface. The laboratory bioassays showed that 50% lethal concentration （LCs0） values for CrylA. 105 and Cry2Ab2 for the population originated from Bt plants were 3.55- and 1.34-fold greater, respectively, than those of the population collected from non-Bt plants. In contrast, relative to the popula- tion from non-Bt plants, the LCs0 of the population sampled from Bt plants were 3.85-, 2.5- and 1.64-fold more sensitive to CrylAa, CrylAb and CrylAc, respectively. The re- sults did not provide clear evidence to conclude that the observed field survival of D. saccharalis on Bt plants was associated with increased levels of resistance.

关键词： Bacillus thuringiensis maize stalk borer susceptibility transgenic crops

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由心出发的设计,克里斯托弗·约翰·罗杰斯

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艺术与设计 2022年第1期11卷 168-171页

作者：吉丽 CHRISTOPHER JOHN rogers(图) 不详

近期,CFDA时尚大奖(CFDA Fashion Awards)公布2021年获奖名单,其中美国年度女装设计师奖(American Womenswear Designer of the Year)获奖者是克里斯托弗·约翰·罗杰斯(Christopher John rogers)。克里斯托弗·约翰·罗杰斯曾就读于萨... 详细信息

近期,CFDA时尚大奖(CFDA Fashion Awards)公布2021年获奖名单,其中美国年度女装设计师奖(American Womenswear Designer of the Year)获奖者是克里斯托弗·约翰·罗杰斯(Christopher John rogers)。克里斯托弗·约翰·罗杰斯曾就读于萨凡纳艺术与设计学院,上学期间成立了品牌CJR。

关键词：克里斯托弗约翰·罗杰斯艺术与设计

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Acrolein scavenger dimercaprol offers neuroprotection in an animal model of Parkinson’s disease:implication of acrolein and TRPA1

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Translational Neurodegeneration 2021年第2期10卷 151-165页

作者： Liangqin Shi Yazhou Lin Yucheng Jiao Seth AHerr Jonathan Tang Edmond rogers Zhengli Chen Riyi Shi College of Basic Medicine Chengdu University of Traditional Chinese MedicineChengdu 610075China Center for Paralysis Research&Department of Basic Medical Sciences College of Veterinary MedicinePurdue UniversityWest LafayetteIN 47907USA Laboratory of Animal Disease Model College of Veterinary MedicineSichuan Agricultural UniversityChengdu 625014China Department of Orthopedics Ruijin HospitalSchool of MedicineShanghai Jiao Tong UniversityInstitute of Trauma and OrthopedicsShanghai 200025China Weldon School of Biomedical Engineering Purdue University West LafayetteWest LafayetteIN 47907USA

Background:The mechanisms underlying lesions of dopaminergic(DA)neurons,an essential pathology of Parkinson’s disease(PD),are largely unknown,although oxidative stress is recognized as a key *** have previously shown that the pro-oxidative aldehyde acrolein is a critical factor in PD pathology,and that acrolein scavenger hydralazine can reduce the elevated acrolein,mitigate DA neuron death,and alleviate motor deficits in a 6-hydroxydopamine(6-OHDA)rat *** such,we hypothesize that a structurally distinct acrolein scavenger,dimercaprol(DP),can also offer neuroprotection and behavioral ***:DP was used to lower the elevated levels of acrolein in the basal ganglia of 6-OHDA *** acrolein levels and related pathologies were measured by *** and behavioral effects of 6-OHDA injections and DP treatment were examined using the open field test and rotarod *** was assessed using mechanical allodynia,cold hypersensitivity,and plantar ***,the effects of DP were assessed in vitro on SK-N-SH dopaminergic cells exposed to ***:DP reduced acrolein and reversed the upregulation of pain-sensing transient receptor potential ankyrin 1(TRPA1)channels in the substantia nigra,striatum,and *** also mitigated both motor and sensory deficits typical of *** addition,DP lowered acrolein and protected DA-like cells in ***’s ability to upregulate TRPA1 was also verified in vitro using cell ***:These results further elucidated the acrolein-mediated pathogenesis and reinforced the critical role of acrolein in PD while providing strong arguments for anti-acrolein treatments as a novel and feasible strategy to combat neurodegeneration in *** the extensive involvement of acrolein in various nervous system illnesses and beyond,anti-acrolein strategies may have wide applications and broad impacts on human health.

关键词： Oxidative stress Parkinson’s disease Neuroinflammation Acrolein TRPA1 Dimercaprol

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Switchable carbamate coagulants to improve recycling ionic liquid from biomass solutions

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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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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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