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RF Loss Model for Tree Canopies with Varying Water Content

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Journal of Electromagnetic Analysis and Applications 2021年第6期13卷 83-101页

Detection of plant water status is important for monitoring plant physiology. Previous studies showed that radio waves are attenuated when passing through vegetation such as trees, and models (both empirical and analytical) were developed. However, for models to be more broadly applicable across a broad range of vegetation types and constructs, basic electrical properties of the vegetation need to be characterised. In our previous work, a model was developed to calculate the RF loss through vegetation with varying water content. In this paper, the model was extended to calculate RF loss through tree canopies with or without an air gap. When the model was compared with the actual RF loss acquired using Eucalyptus blakelyi trees (with and without leaves), there was a systematic offset equivalent to a residual moisture content of 13% that was attributed to bound water. When the model was adjusted for the additional water content, the effective water path (EWP) was found to explain 72% of the variance in the measured RF loss.

关键词： Radio Attenuation Water Content Vegetation Thickness Permittivity Path Loss

A Model for RF Loss through Vegetation with Varying Water Content

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Journal of Electromagnetic Analysis and Applications 2021年第3期13卷 41-56页

作者： Sonam Peden Ronald C. Bradbury david william lamb Mark Hedley Precision Agriculture Research Group University of New England (UNE) Armidale NSW Australia Food Agility Cooperative Research Centre University of New England Armidale NSW Australia CSIRO Data61 Marsfield NSW Australia

Assessing plant water status is important for monitoring plant physiology. Radio signals are attenuated when passing through vegetation. Both analytical and empirical models developed for radio frequency (RF) loss through vegetation have been dependent on experimental measurements and those measurements have been completed in specific situations. However, for models to be more broadly applicable across a broad range of vegetation types and constructs, basic electrical properties of the vegetation need to be characterised. Radio waves are affected especially by water and the relationship between water content in vegetation expressed as effective water path (EWP) in mm and measured RF loss (dB) at 2.4 GHz was investigated in this work. The EWP of eucalyptus leaves of varying amounts of leaf moisture (0% - 41.5%) ranged from 0 - 14 mm, respectively. When the model was compared with the actual RF loss there was a systematic offset equivalent to a residual leaf moisture content of 6.5% that was unaccounted for in the leaf moisture content determination (oven drying). This was attributed to bound water. When the model was adjusted for this amount of additional leaf water, the average RMSE in predicted RF loss was ±2.2 dB and was found to explain 89% of the variance in measured RF loss.

关键词： Radio Attenuation Leaves Water Content Path Loss Vegetation Thickness Permittivity

A Model for RF Loss through Vegetation with Varying Water Content

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Prediction of Water Content of Eucalyptus Leaves Using 2.4 GHz Radio Wave

Journal of Electromagnetic Analysis and Applications（电磁分析与应用期刊） 2021年第3期

作者： Sonam Peden Ronald C. Bradbury david william lamb Mark Hedley

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Macroalgal deep genomics illuminate multiple paths to aquatic,photosynthetic multicellularity

Journal of Electromagnetic Analysis and Applications（电磁分析与应用期刊） 2021年第8期

作者： sonam peden ronald c.bradbury david william lamb mark hedley

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Molecular Plant 2024年第5期17卷 747-771页

作者： david R.Nelson Alexandra Mystikou Ashish Jaiswal Cecilia Rad-Menendez Michael J.Preston Frederik De Boever Diana C.El Assal Sarah Daakour Michael W.Lomas Jean-Claude Twizere david H.Green william C.Ratcliff Kourosh Salehi-Ashtiani Division of Science and Math New York University Abu DhabiAbu DhabiUAE Center for Genomics and Systems Biology(CGSB) New York University Abu DhabiAbu DhabiUAE Biotechnology Research Center Technology Innovation InstitutePO Box 9639Masdar CityAbu DhabiUAE Culture Collection of Algae and Protozoa Scottish Association for Marine ScienceObanScotlandUK National Center for Marine Algae and Microbiota Bigelow Laboratory for Ocean SciencesEast BoothbayMEUSA Laboratory of Viral Interactomes GIGA InstituteUniversity of LiegeLiegeBelgium School of Biological Sciences Georgia Institute of TechnologyAtlantaGAUSA

Macroalgae are multicellular,aquatic autotrophs that play vital roles in global climate maintenance and have diverse applications in biotechnology and eco-engineering,which are directly linked to their multicellularity ***,their genomic diversity and the evolutionary mechanisms underlying multicellularity in these organisms remain *** this study,we sequenced 110 macroalgal genomes from diverse climates and phyla,and identified key genomic features that distinguish them from their microalgal *** for cell adhesion,extracellular matrix formation,cell polarity,transport,and cell differentiation distinguish macroalgae from microalgae across all three major phyla,constituting conserved and unique gene sets supporting multicellular *** genes show phylum-and climate-specific expansions that may facilitate niche ***,our study reveals genetic determinants of convergent and divergent evolutionary trajectories that have shaped morphological diversity in macroalgae and provides genome-wide frameworks to understand photosynthetic multicellular evolution in aquatic environments.

关键词： macroalgae multicellularity comparative genomics evolution adhesome endogenous viral elements

Multi-Organ Pathogenesis and Therapeutic Strategies for Cystic Fibrosis

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Journal of Biosciences and Medicines 2024年第5期12卷 312-329页

作者： Oluwaseun Babatunde Ogonna william david Richard Ifeanyichukwu Ikwugbado Oluwaseyi Oyewole Fetal Research and Therapy Program Wake Forest Institute for Regenerative Medicine Winston-Salem NC USA Department of Chemistry University of Houston Houston TX USA Biotechnology Graduate Program School of Sciences and Engineering The American University in Cairo New Cairo Egypt

Cystic Fibrosis (CF) is the most common lethal autosomal inherited disorder that affects all races and ethnicities in the United States. However, it is mostly predominant in the Caucasian populace accounting for about 80% of all CF cases. CF most severe complication can be referred to as pulmonary bronchiectasis and infections of the airways, nonetheless, the devastating effects of the disease have far-reaching consequences beyond lung damage. CF is a heterogeneous disease that is caused by mutations in Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene. The impairment or absence of this gene can affect multiple organs and systems and is characterized not only by chronic lung blockage, infections, and inflammation but also by exocrine gland dysfunction, intestinal obstruction, liver pathology, elevated sweat chloride concentration, and in males, infertility due to the congenital bilateral absence of the vas deferens. To this end, we briefly explore the pathological effects of CF and how CF mediates the destruction of several critical organs in the body and some of the gene therapeutical approaches such as gene editing and viral-based strategies available for the treatment of this multi-organ disease.

关键词： Cystic Fibrosis Gene Therapy Organ Damage

Storylines of family medicine Ⅺ:professional identity formation—nurturing one’s own story

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Family Medicine and Community Health 2024年第S03期12卷 99-108页

作者： william B Ventres Leslie A Stone Hamish J Wilson Sumi M Sexton david J Doukas Jessica P Cerdena david M Kelley Michael D Fetters Jeffrey J Haney John J Frey III Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA General Practice and Rural Health University of Otago Dunedin School of MedicineDunedinNew Zealand Family Medicine Georgetown University School of MedicineWashingtonDistrict of ColumbiaUSA Family and Community Medicine Tulane University School of MedicineNew OrleansLouisianaUSA Family Medicine Residency Program Middlesex HealthMiddletownConnecticutUSA Family Medicine University of Michigan Medical SchoolAnn ArborMichiganUSA Medical Education and Clinical Sciences Washington State UniversitySpokaneWashingtonUSA Family Medicine and Community Health University of Wisconsin-Madison School of Medicine and Public HealthMadisonWisconsinUSA

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine,as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅺ:professional identity formation—nurturing one’s own story’,authors address the following themes:‘The social construction of professional identity’,‘On becoming a family physician’,‘What’s on the test?—professionalism for family physicians’,‘The ugly doc-ling’,‘Teachers—the essence of who we are’,‘Family medicine research—it starts in the clinic’,‘Socially accountability in medical education’,‘Personal philosophy and how to find it’and‘Teaching and learning with Storylines of Family Medicine’.May these essays encourage readers to find their own creative spark in medicine.

关键词： own becoming professional

Storylines of family medicine Ⅵ:ways of being—in the office with patients

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Family Medicine and Community Health 2024年第S03期12卷 52-60页

作者： william B Ventres Leslie A Stone Lisa A LaVallee david Loxterkamp Jonisha R Brown Dael M Waxman Peter S Dorward Jeanne Cawse-Lucas Larry B Mauksch Autumn M Kieber-Emmons Benjamin F Crabtree william L Miller Veronica M Brohm Timothy P Daaleman Kelly Bossenbroek Fedoriw Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA MAHEC Family Medicine Residency Mountain Area Health Education CenterAshevilleNorth CarolinaUSA Bucksport Regional Health Center BucksportMaineUSA Family Medicine Atrium HealthCharlotteNorth CarolinaUSA Southfield Medical Practice EdinburghUK Family Medicine University of Washington School of MedicineSeattleWashingtonUSA Family Medicine Lehigh Valley Health NetworkAllentownPennsylvaniaUSA Morsani College of Medicine University of South FloridaTampaFloridaUSA Family Medicine and Community Health Rutgers Robert Wood Johnson Medical SchoolPiscatawayNew JerseyUSA Cancer Institute of New Jersey New BrunswickNew JerseyUSA Family Medicine UNC School of MedicineChapel HillNorth CarolinaUSA

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine,as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅵ:ways of being—in the office with patients’,authors address the following themes:‘Patient-centred care—cultivating deep listening skills’,‘Doctor as witness’,‘Words matter’,‘Understanding others—metaphor and its use in medicine’,‘Communicating with patients—making good use of time’,‘The patient-centred medical home—aspirations for the future’,‘Routine,ceremony or drama?’and‘The life course’.May readers better appreciate the nuances of patient care through these essays.

关键词： centre illustration dimensions

Storylines of family medicine Ⅷ:clinical approaches

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Family Medicine and Community Health 2024年第S03期12卷 70-78页

作者： william B Ventres Leslie A Stone Lauren E Gibson-Oliver Elizabeth Kyle Meehan Mari A Ricker david Loxterkamp Stacy A Ogbeide Frank V deGruy Megan R Mahoney Steven Lin Clare MacRae Stewart W Mercer Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA Family and Community Medicine The University of Arizona College of Medicine-TucsonTucsonArizonaUSA Bucksport Regional Health Center BucksportMaineUSA Family and Community Medicine UT Health San Antonio Long School of MedicineSan AntonioTexasUSA Eugene S.Farley Jr.Health Policy CenterUniversity of Colorado Anschutz Medical Campus School of MedicineAuroraColoradoUSA Family and Community Medicine University of California San Francisco School of MedicineSan FranciscoCaliforniaUSA Division of Primary Care and Population Health Stanford MedicinePalo AltoCaliforniaUSA Usher Institute Edinburgh Medical SchoolUniversity of EdinburghEdinburghUK

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅷ:clinical approaches’,authors address the following themes:‘Evaluation,diagnosis and managementⅠ—toward a working diagnosis’,‘Evaluation,diagnosis and managementⅡ—process steps’,‘Interweaving integrative medicine and family medicine’,‘Halfway—the art of clinical judgment’,‘Seamless integration in family medicine—team-based care’,‘Technology—uncovering stories from noise’and‘Caring for patients with multiple long-term conditions’.May readers recognise in these essays the uniqueness of a family medicine approach to care.

关键词： uniqueness dimensions illustration