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Pedosphere 2007年第6期17卷 681-687页

作者： H. KANG C. freeman Department of Civil and Environmental Engineering Yonsei University Seoul 120- 749 （Korea） School of Biological Sciences University of Wales Bangor LL57 2UW （UK）

The nature of the interactions between microbes and roots of plants in a peaty soil were studied in a laboratory- based experiment by measuring activities ofβ-glucosidase,phosphatase,N-acetylglucosaminidase,and *** experiment was based on control(autoclaved),bacteria-inoculated,and plant(transplanted with Dactylorhiza)treatments, and samples were collected over 4 sampling *** enzyme activities were associated with the bacteria-inoculated treatment,suggesting that soil enzyme activities are mainly of microbial *** example,β-glucosidase activity varied between 25-30μmol g^(-1)min^(-1)in the bacteria-inoculated samples whilst the activity of the control ranged between 4-12μmol g^(-1)min^(-1)A similar pattern was found for all other enzymes. At the end of the incubation,the microcosms were destructively sampled and the enzyme activities determined in bulk soil,rhizospheric soil,and on the root *** measurement in different fractions of the peat indicated that higher activities were found in ***,the higher activities ofβ-glucosidase,N-acetylglucosaminidase,and arylsulphatase appeared to be associated with bacterial proliferation on the root surface,whilst a larger proportion of phosphatase appeared to be released from root surface.

关键词： Dactylorhiza extracellular enzyme peat rhizosphere wetland

Point-to-Point Iterative Learning Control with Optimal Tracking Time Allocation:A Coordinate Descent Approach

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Point-to-Point Iterative Learning Control with Optimal Track...

The Shortage of Local Anesthesia and Palliative Care Medications in Minor Postoperative Orthopedic Surgical Procedures in Ecuador

第36届中国控制会议

作者： Yiyang Chen Bing Chu Christopher T.freeman Electronics and Computer Science University of Southampton

ISBN: (纸本)9781538629185

Iterative learning control(ILC) is a high performance control technique for systems operating in a repetitive manner.A novel design methodology is developed in this paper to incorporate optimal tracking time allocation within the point-topoint ILC framework for discrete time systems. This leads to significant performance improvements compared to fixed time points(e.g. energy reduction). An optimization problem is formulated based on the point-to-point tracking requirement and the via-point temporal constraints. A two stage design framework is proposed to solve this problem, yielding an algorithm based on norm optimal ILC and the coordinate descent method, which automatically minimizes control effort while maintaining high performance tracking. The proposed algorithm is implemented on a gantry robot experimental test platform, with results verifying its practical effectiveness in the presence of model uncertainty.

关键词： iterative learning control optimization coordinate descent method

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Health 2022年第9期14卷 964-971页

作者： Naiesa freeman Finance/PreMed University of Texas at Austin Austin USA

This white paper discusses the Ecuadorian healthcare system specifically the lack of proper anesthesia and post-operative pain medication and touches base with centralized hospitals. This paper articulates the specific problems inhibiting the usage of these proper medications, specifically looking at a hospital in Quito, Ecuador. Present day tribal situations are also discussed as they are a significant part of the population that is affected by the shortages of pain medication and anesthesia. Solutions are presented to solve the problems the country faces and how it is relevant today.

关键词： Healthcare Ecuador Anesthesia Medication Centralization Reform

Trading in your spindles for blebs： the amoeboid tumor cell phenotype in prostate cancer

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Asian Journal of Andrology 2014年第4期16卷 530-535页

作者： Samantha Morley Martin H Hager Sara G Poilan Beatrice Knudsen Dolores Di Vizio Michael R freeman Division of Cancer Biology and Therapeutics Departments of Surgery Medicine and Biomedical Sciences and The Samuel Oschin Comprehensive Cancer Institute Cedars-Sinai Medical Center Los Angeles CA Urological Diseases Research Center Boston Children's Hospital Boston MA Department of Surgery Harvard Medical School Boston MA Department of Medicine David Geffen School of Medicine University of California Los Angeles CA USA.

Prostate cancer （PCa） remains a principal cause ofmortalityin developed *** no clinical interventions overcome resistance to androgen ablation therapy, management of castration resistance and metastatic disease remains largely untreatable. Metastasis is a multistep process in which tumor cells lose cell-cell contacts, egress from the primary tumor, intravasate, survive shear stress within the vasculature and extravasate into tissues to colonize ectopic sites. Tumor ceils reestablish migratory behaviors employed during nonneoplastic processes such as embryonic development, leukocyte trafficking and wound healing. While mesenchymal motility is an established paradigm of dissemination, an alternate, ＇amoeboid＇ phenotype is increasingly appreciated as relevant to human cancer.

关键词： SIGNALING COOPERATE RHO GTPASES INVASION MOTILITY MIGRATION TRANSITION PLASTICITY ROCK METASTASIS ACTIVATION

Connection Between High-Harmonic Generation and Above-Threshold Ionization

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Chinese Physics Letters 2001年第9期18卷 1199-1201页

作者： WANG Bhig-Bhig LI Xiao-Feng GAO Liang-Hui FU Pan-Ming GUO Dong-Sheng R.R.freeman Laboratory of Optical Physics Institute of Physics and Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080 Department of Applied Science University of CaliforniaDavisCalifornia 95616USA

Based on the nonperturbative quantum electrodynamics theory of high-order harmonic generation (HHG), we establish a direct connection between above-threshold ionization (ATI) and HHG. HHG can be described simply as an... 详细信息

关键词： simply harmonic Harmonic

Quantum Electrodynamics Basis of Classical-Field High-Harmonic Generation Theory

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Chinese Physics Letters 2001年第9期18卷 1196-1198页

作者： WANG Bing-Bing LI Xiao-Feng GAO Liang-Hui FU Pan-Ming GUO Dong-Sheng R.R.freeman Laboratory of Optical Physics Institute of Physics and Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080 Department of Applied Science University of CaliforniaDavisCalifornia 95616USA

From the nonperturbative quantum electrodynamics theory, we derive the Landau-Dykhne formula which represents the quantum-mechanical formulation of the three-step model. These studies provide a basis for the classical... 详细信息

关键词： quantum formulation harmonic

Predictors of visual outcome in eyes with choroidal neovascularization secondary to age related macular degeneration treated with intravitreal bevacizumab monotherapy

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International Journal of Ophthalmology(English edition) 2013年第1期6卷 62-66页

作者： Jay Chhablani Jae SukKim William R freeman Igor Kozak Hai-Yan Wang Lingyun Cheng Jacob's Retina Center at Shiley Eye Center University of California L V Prasad Eye Institute Department of Ophthalmology Sanggye Paik Hospital Inje University

AIM:To evaluate the predictors of visual improvement in eyes with naive choroidal neovascularization secondary to age-related macular degeneration (CNV -AMD) treated with intravitreal bevacizumab (IVB) monotherapy. METHODS:Fifty eyes with naive CNV-AMD with pretreatment best-corrected visual acuity (BCVA) better than 20/200 and treated with IVB monotherapy were evaluated. Several variables including age, sex, pre-treatment BCVA, CNV type and lesion size on fluorescein angiogram as well as SD-OCT parameters including pre-treatment central macular thickness (CMT), inner-segment/outer-segment (IS/OS) junction integrity, and external limiting membrane (ELM) integrity were analyzed to predict visual ***:On univariate regression, pretreatment ELM damage was associated with less visual improvement after treatment (P =0.0145). However, ELM damage predicted only 10% of the visual outcome. On multivariate regression, pretreatment BCVA, IS/OS junction, and ELM integrity on SD-OCT were the significant predictors for the treatment effect and together predicted 37% of visual improvement. CONCLUSION:Pretreatment BCVA, ELM and IS/OS junction integrity on SD-OCT are of significant value inpredicting the visual improvement in naive wet AMD patients treated with IVB monotherapy.

关键词： external limiting membrane age-related macular degeneration choroidal neovascularization avastin

Bemisia tabaci （Hemiptera： Aleyrodidae） nymphal feeding in cotton （Gossypium hirsutum） leaves

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Insect Science 2007年第5期14卷 375-381页

作者： CHANG-CHI CHU DENNIS A. MARGOSAN JAMES S. BUCKNER THOMAS P. freeman THOMAS J. HENNEBERRY USDA ARS US Arid Land Agricultural Research Center Maricopa Arizona USDA ARS San Joaquin Valley Agricultural Science Center Parlier California Biosciences Research Laboratory Fargo North Dakota Electron Microscopy Center North Dakota State University Fargo North Dakota USA

We used brightfield electron microscopy （BEM）, differential interference contrast microscopy （DICM）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and confocal laser scanning microscopy （CLSM） to investigate the stylet pathways of Bemisia tabaci during nymphal feeding behavior in cotton leaves beginning with penetration of the abaxial leaf surface and ending with stylets in sieve tubes in phloem tissues. Most nymphal stylets within salivary sheaths penetrating leaf tissues made complex turns and developed more than one salivary sheath branch before ending in sieve tubes. The external morphology of the salivary sheaths and their routes between and through leaf cells are described during the present study. Results showed the presence of the stylet within the sieve tubes. B. tabaci nymphs may remove stylets and feed in different sieve tubes. Ten short movies showing the progression of the stylet penetrations from adaxial surface to the sieve tubes are attached to Figures 8-15. The report and movies can be viewed from the internet. Download the movies to a local drive in your computer first for fast upload. The movies are posted on the website http：//***/Services/***？docid=14629. The movies can be used as a teaching aid in biology classes.

关键词： Bemisia tabaci microscopy nymphs feeding stylet sheath stylet

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Content-based, Task-based, and Participatory Approaches （I）

作者： Diane Kruger，Martin freeman Cas Anvar主演

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基础教育外语教学研究 2012年第2期 28-36页

作者： Diane Larsen-freeman