NUTRIENT CONTENT AND SLUDGE VOLUMES IN SINGLE-CELL RECYCLE ANAEROBIC SWINE LAGOONS IN NORTH CAROLINA

1999 ◽  
Vol 42 (4) ◽  
pp. 1087-1094 ◽  
Author(s):  
J. R. Bicudo ◽  
L. M. Safley Jr. ◽  
P. W. Westerman
Keyword(s):  
North Carolina ◽  
Single Cell ◽  
Nutrient Content ◽  
Cell Recycle ◽  
Swine Lagoons

SEEPAGE EVALUATION OF OLDER SWINE LAGOONS IN NORTH CAROLINA

2004 ◽  
Vol 47 (5) ◽  
pp. 1507-1512 ◽  
Author(s):  
R. L. Huffman
Keyword(s):  
North Carolina ◽  
Swine Lagoons

Environmental policy and swine manure management Waste not or want not?

1995 ◽  
Vol 10 (4) ◽  
pp. 163-166 ◽  
Author(s):  
Dana L. Hoag ◽  
Fritz M. Roka
Keyword(s):  
North Carolina ◽  
Environmental Policy ◽  
Systems Approach ◽  
Swine Manure ◽  
Nutrient Content ◽  
Livestock Production ◽  
Economic Incentives ◽  
Land Application ◽  
Manure Management ◽  
Interactive Nature

AbstractLivestock production and manure handling decisions often have been treated in the literature as separate enterprises. Policymakers, too, have ignored the interactive nature of manure management by focusing on land application for nutrient disposal. This study outlines a systems approach to describe the interrelated decisions producers face, using examples from North Carolina and Iowa that show how producers' attitudes toward manure management lead them to handle manure differently in different regions. In North Carolina, nutrients in manure are “not wanted.” There are economic incentives to treat manure, thus reducing its nutrient content, and to apply it on as little land as possible. In Iowa, nutrients are “not wasted.” Producers conserve the nutrients in manure and use them more fully, applying manure to higher value crops such as corn. Policies that influence manure management can be made more effective by accounting for the differences in producers' incentives to waste or want the nutrients.

scholarly journals Development of the Press Extraction Method for Plug Substrate Analysis: Quantitative Relationships Between Solution Extraction Techniques

HortScience ◽  
2001 ◽  
Vol 36 (5) ◽  
pp. 918-921 ◽  
Author(s):  
Holly L. Scoggins ◽  
Douglas A. Bailey ◽  
Paul V. Nelson
Keyword(s):  
North Carolina ◽  
Sample Size ◽  
Nutrient Content ◽  
Extraction Methods ◽  
Strong Correlations ◽  
Testing Methods ◽  
Ph Values ◽  
The Press ◽  
Saturated Media ◽  
Four Levels

Substrate electrical conductivity (EC), pH, and nutrient content should be monitored frequently during seedling plug production. Current testing methods are either complicated, unsuited to plug production, or interpretation standards do not exist. This study compares the press extraction (PE) method developed at North Carolina State Univ. with the saturated media extract (SME) method and the 1 substrate: 2 water suspension method (1:2). These solution extraction methods were applied to plug trays containing peat-based germination mix treated with four levels of fertilizer. Two sample sizes of 20 or 60 plug cells were used to determine if the smaller, less destructive sample size would produce satisfactory results. Resulting pH values varied within 0.3 units among methods, but variability in EC and nutrient content was greater. The PE method resulted in the highest values for EC, NH4+-N, NO3--N, K, Ca, and Mg while sample size had little effect on analyses. The three extraction methods were then compared on peat- and coir-based substrates. Within substrates, pH, EC, and nutrients tested were similar for the PE and the SME. The coir extract had a higher pH and much higher levels of K and Na than did the peat extract but was lower in N, P, Ca, and Mg. Overall, fairly strong correlations among testing methods were found, especially between the SME and PE.

Heterogeneity of decomposition and nutrient dynamics of oak (Quercus) logs during the first 2 years of decomposition

1992 ◽  
Vol 22 (2) ◽  
pp. 161-166 ◽  
Author(s):  
T.D. Schowalter
Keyword(s):  
North Carolina ◽  
Decay Rate ◽  
Nutrient Dynamics ◽  
Early Stage ◽  
Initial Period ◽  
Nutrient Release ◽  
Nutrient Content ◽  
Decomposition Rates ◽  
Inner Bark ◽  
Lag Times

Decomposition of oak (Quercus spp.) logs (25–35 cm diameter, 3 m long) was compared among log substrates in Oregon, Minnesota, Kansas, and North Carolina during the first 2 years on the ground. Decomposition rates (k) for integrated logs averaged 0.28 ± 0.04 year−1 (mean ± 1 SD)) during this initial period. Decomposition reflected qualitative differences among log substrates (outer and inner bark, sapwood and heartwood). Inner bark had the highest nutritional quality and was the focus of insect and microbial activity during this early stage of decomposition; only 20% of initial mass remained after 2 years (k = 0.59 ± 0.15 year−1). Sapwood decayed more slowly than heartwood, with an overall decay rate of 0.20 ± 0.15 year−1). Heartwood lost 50% of its mass during the 1st year, but showed no further loss during the 2nd year, for an overall decay rate of 0.31 ± 0.05 year−1. Nutrient content generally declined during decomposition, but P accumulated in heartwood and Na accumulated in sapwood and heartwood during the 2nd year. Results indicate that decomposition of whole logs integrates different decomposition rates and lag times (i.e., time prior to initiation of decomposition) among log substrates varying in qualitative factors. Multiple-exponential models may be necessary to predict rates and sources of carbon and nutrient release to the atmosphere and soil.

Between ‘Savage Man’ and ‘Most Faithful Englishman’ Manteo and the Early Anglo-Indian Exchange, 1584–1590

Itinerario ◽  
2000 ◽  
Vol 24 (2) ◽  
pp. 146-169 ◽  
Author(s):  
Michael Leroy Oberg
Keyword(s):  
North Carolina ◽  
Chesapeake Bay ◽  
One Year ◽  
Anglo Indian

In August of 1587 Manteo, an Indian from Croatoan Island, joined a group of English settlers in an attack on the native village of Dasemunkepeuc, located on the coast of present-day North Carolina. These colonists, amongst whom Manteo lived, had landed on Roanoke Island less than a month before, dumped there by a pilot more interested in hunting Spanish prize ships than in carrying colonists to their intended place of settlement along the Chesapeake Bay. The colonists had hoped to re-establish peaceful relations with area natives, and for that reason they relied upon Manteo to act as an interpreter, broker, and intercultural diplomat. The legacy of Anglo-Indian bitterness remaining from Ralph Lane's military settlement, however, which had hastily abandoned the island one year before, was too great for Manteo to overcome. The settlers found themselves that summer in the midst of hostile Indians.

Electron microscopy of keratinocytes cultured on a collagen substrate used as an allograft for the treatment of chronic wounds

1992 ◽  
Vol 50 (2) ◽  
pp. 1104-1105
Author(s):  
Debby A. Jennings ◽  
Michael J. Morykwas ◽  
Louis C. Argenta
Keyword(s):  
Electron Microscopy ◽  
Cell Suspension ◽  
Single Cell ◽  
Chronic Wounds ◽  
Mechanical Stability ◽  
Uv Light ◽  
Type I ◽  
Single Cell Suspension ◽  
Collagen Substrate ◽  
Dermal Collagen

Grafts of cultured allogenic or autogenic keratlnocytes have proven to be an effective treatment of chronic wounds and burns. This study utilized a collagen substrate for keratinocyte and fibroblast attachment. The substrate provided mechanical stability and augmented graft manipulation onto the wound bed. Graft integrity was confirmed by light and transmission electron microscopy.Bovine Type I dermal collagen sheets (100 μm thick) were crosslinked with 254 nm UV light (13.5 Joules/cm2) to improve mechanical properties and reduce degradation. A single cell suspension of third passage neonatal foreskin fibroblasts were plated onto the collagen. Five days later, a single cell suspension of first passage neonatal foreskin keratinocytes were plated on the opposite side of the collagen. The grafts were cultured for one month.The grafts were fixed in phosphate buffered 4% formaldehyde/1% glutaraldehyde for 24 hours. Graft pieces were then washed in 0.13 M phosphate buffer, post-fixed in 1% osmium tetroxide, dehydrated, and embedded in Polybed 812.

Supervision: Supervision and Clinical Practicum in Telepractice

2011 ◽  
Vol 21 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Sena Crutchley
Keyword(s):  
North Carolina ◽  
Pilot Project ◽  
First Year ◽  
University Of North Carolina ◽  
Speech Language Pathology ◽  
Support Personnel ◽  
Clinical Practicum ◽  
Training Support ◽  
Language Pathology ◽  
The University

This article describes how a telepractice pilot project was used as a vehicle to train first-year graduate clinicians in speech-language pathology. To date, six graduate clinicians have been trained in the delivery of telepractice at The University of North Carolina at Greensboro. Components of telepractice training are described and the benefits and limitations of telepractice as part of clinical practicum are discussed. In addition, aspects of training support personnel involved in telepractice are outlined.

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