Using a novel method to clear cells of cytoplasmic constituents, Mullendore et al. Until recently, limited anatomical resolution has made detailed studies of the anatomy difficult. The sieve tube structure has a pronounced effect on the flow due to the viscous drag imposed by the presence of the cell walls, the cell organs, the sieve plates, and other parietal materials (Crafts and Crisp, 1971 Thompson and Holbrook, 2003). As shown in Figure Figure2, 2, the sieve pore radius r p is normally distributed with a standard deviation σ p of approximately 25% of the mean value r ¯ p See Mullendore et al. (C–F) Scanning electron microscope (SEM) images of sieve plates. On average, about 50% of the sieve plate area is covered by open pores. The computational domain (CD) used in the numerical simulations is highlighted in dark gray. Adjacent sieve tube cells of length ℓ and radius r are separated by thin sieve plates of thickness ℓ p perforated by small holes of radius r p known as sieve pores. We find that the sieve plate resistance is correlated to the cell lumen resistance, and that the sieve plate and the lumen contribute almost equally to the total hydraulic resistance of the phloem translocation pathway. Numerical simulations of the flow in real and idealized phloem channels verify our model, and anatomical data from 19 plant species are investigated. We propose a theoretical model for quantifying the effect of sieve plates on the phloem in the plant, thus unifying and improving previous work in the field. The resistance to the flow of viscous sap in the phloem vascular system is strongly affected by the presence of the sieve plates, but the hydrodynamics of the flow through them remains poorly understood. These thin plates, which separate neighboring phloem cells, are perforated by a large number of tiny sieve pores and are believed to play a crucial role in protecting the phloem sap from intruding animals by blocking flow when the phloem cell is damaged. Ultimately, the development of the Endview tract will be subject to the successful negotiation of a development agreement with the EDA.Sieve plates have an enormous impact on the efficiency of the phloem vascular system of plants, responsible for the distribution of photosynthetic products. In the coming months, WeldenField Development will begin community outreach sessions in the form of focus groups to get input from the community and stakeholders about the development of the Endview tract. The Endview Tract is nestled in a fabulous location and once developed, will surely be deemed one of the premier communities in Hampton Roads and Coastal Virginia,” said Brian Rowe, Partner WeldenField Development. “WeldenField Development is very excited about being selected to work with the EDA as the Master Developer of the Endview Tract. “This development at Endview will create a community that will attract new residents to the City, and provide a new housing option in the City for those already working here.” Kingston, Secretary/Treasurer of the EDA and Director of Development. “We are looking forward to working closely with WeldenField Development to create a vision for Endview that will result in a premier residential community that will respect the site’s historical importance and leverage its assets,” said Florence G. WeldenField Development’s vision for the property respects the existing Endview House while leveraging connections to Newport News Park to create a desirable, high-quality residential community. In addition to having a capable and experienced team, the collaborative and innovative approach expressed by WeldenField Development will be an essential component in the creation of a fruitful partnership with the EDA and City. The Endview tract is one of the last remaining large-scale residential community sites in the City. The EDA’s goal is to establish a distinctive, vibrant residential community that leverages the placemaking opportunities afforded by the site in a manner that is attractive to business executives, professionals and entrepreneurs. This selection follows the EDA’s Request for Qualifications for a highly experienced design/development/build team to plan, design, build and market a premier, predominantly residential community on the Endview tract. The Endview tract is a 285-acre parcel located at 350 Yorktown Road in northern Newport News. Newport News, VA – The Economic Development Authority of the City of Newport News, Virginia (EDA) selected WeldenField Development, LLC and its Hampton Roads-based Partner, Brian Rowe with WeldenField & Rowe as the Preferred Developer for its Endview tract. NEWPORT NEWS ECONOMIC DEVELOPMENT AUTHORITY SELECTS WELDENFIELD DEVELOPMENT AS PREFERRED DEVELOPER FOR ENDVIEW TRACT
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