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1. Performance Characteristics of Candidate Criteria for Hemodialysis Arteriovenous Fistula Maturation

Author

Ng, Jia Hwei, Yang, Wei, Dember, Laura M., Feldman, H., Dember, L., Farber, A., Kaufman, J., Stern, L., LeSage, P., Kivork, C., Soares, D., Malikova, M., Allon, M., Young, C., Taylor, M., Woodard, L., Mangadi, K., Roy-Chaudhury, P., Munda, R., Lee, T., Alloway, R., El-Khatib, M., Canaan, T., Pflum, A., Thieken, L., Campos-Naciff, B., Huber, T., Berceli, S., Jansen, M., McCaslin, G., Trahan, Y., Vazquez, M., Vongpatanasin, W., Davidson, I., Hwang, C., Lightfoot, T., Livingston, C., Valencia, A., Dolmatch, B., Fenves, A., Hawkins, N., Cheung, A., Kraiss, L., Kinikini, D., Treiman, G., Ihnat, D., Sarfati, M., Lavasani, I., Maloney, M., Schlotfeldt, L., Himmelfarb, J., Buchanan, C., Clark, C., Crawford, C., Hamlett, J., Kundzins, J., Manahan, L., Wise, J., Beck, G., Gassman, J., Greene, T., Imrey, P., Li, L., Alster, J., Li, M., MacKrell, J., Radeva, M., Weiss, B., Wiggins, K., Alpers, C., Hudkins, K., Wietecha, T., Robbin, M., Umphrey, H., Alexander, L., Abts, C., Belt, L., Vita, J., Hamburg, N., Duess, M., Levit, A., Higgins, H., Ke, S., Mandaci, O., Snell, C., Gravley, J., Behnken, S., Mortensen, R., Chertow, G., Besarab, A., Brayman, K., Diener-West, M., Harrison, D., Inker, L., Louis, T., McClellan, W., Rubin, J., Kusek, J., and Star, R.

Published
2023
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2. Intimal Hyperplasia, Stenosis, and Arteriovenous Fistula Maturation Failure in the Hemodialysis Fistula Maturation Study

Author

Cheung, Alfred K., Imrey, Peter B., Alpers, Charles E., Robbin, Michelle L., Radeva, Milena, Larive, Brett, Shiu, Yan-Ting, Allon, Michael, Dember, Laura M., Greene, Tom, Himmelfarb, Jonathan, Roy-Chaudhury, Prabir, Terry, Christi M., Vazquez, Miguel A., Kusek, John W., Feldman, Harold I., Feldman, H.I., Dember, L.M., Farber, A., Kaufman, J., Stern, L., LeSage, P., Kivork, C., Soares, D., Malikova, M., Young, C., Taylor, M., Woodard, L., Mangadi, K., Roy-Chaudhury, P., Munda, R., Lee, T., Alloway, R., El-Khatib, M., Canaan, T., Pflum, A., Thieken, L., Campos-Naciff, B., Huber, T., Berceli, S., Jansen, M., McCaslin, G., Trahan, Y., Vazquez, M.A., Vongpatanasin, W., Davidson, I., Hwang, C., Lightfoot, T., Livingston, C., Valencia, A., Dolmatch, B., Fenves, A., Hawkins, N., Cheung, A.K., Kraiss, L., Kinikini, D., Treiman, G., Ihnat, D., Sarfati, M., Shiu, Y.-T, Terry, C.M., Lavasani, I., Maloney, M., Schlotfeldt, L., Himmelfarm, J., Buchanan, C., Clark, C., Crawford, C., Hamlett, J., Kundzins, J., Manahan, L., Wise, J., Beck, G., Gassman, J., Greene, T., Imrey, P.B., Li, L., Alster, J., Li, M., MacKrell, J., Radeva, M., Weiss, B., Wiggins, K., Alpers, C.E., Hudkins, K., Wietecha, T., Robbin, M.L., Umphrey, H., Alexander, L., Abts, C., Belt, L., Vita, J., Hamburg, N., Duess, M., Levit, A., Higgins, H., Ke, S., Mandaci, O., Snell, C., Gravley, J., Behnken, S., Mortensen, R., Chertow, G., Besarab, A., Brayman, K., Diener-West, M., Harrison, D., Inker, L., Louis, T., McClellan, W., Rubin, J., Kusek, J.W., and Star, R.

Published
2017
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3. Dynamic Remodeling of Human Arteriovenous Fistula Wall Obtained From Magnetic Resonance Imaging During the First 6 Months After Creation

Author

Feldman, H., Dember, L., Farber, A., Kaufman, J., Stern, L., LeSage, P., Kivork, C., Soares, D., Malikova, M., Allon, M., Young, C., Taylor, M., Woodard, L., Mangadi, K., Roy-Chaudhury, P., Munda, R., Lee, T., Alloway, R., El-Khatib, M., Canaan, T., Pflum, A., Thieken, L., Campos-Naciff, B., Huber, T., Berceli, S., Jansen, M., McCaslin, G., Trahan, Y., Vazquez, M., Vongpatanasin, W., Davidson, I., Hwang, C., Lightfoot, T., Livingston, C., Valencia, A., Dolmatch, B., Fenves, A., Hawkins, N., Cheung, A., Kraiss, L., Kinikini, D., Treiman, G., Ihnat, D., Sarfati, M., Lavasani, I., Maloney, M., Schlotfeldt, L., Himmelfarb, J., Buchanan, C., Clark, C., Crawford, C., Hamlett, J., Kundzins, J., Manahan, L., Wise, J., Beck, G., Gassman, J., Greene, T., Imrey, P., Li, L., Alster, J., Li, M., MacKrell, J., Radeva, M., Weiss, B., Wiggins, K., Alpers, C., Hudkins, K., Wietecha, T., Robbin, M., Umphrey, H., Alexander, L., Abts, C., Belt, L., Vita, J., Hamburg, N., Duess, M., Levit, A., Higgins, H., Ke, S., Mandaci, O., Snell, C., Gravley, J., Behnken, S., Mortensen, R., Chertow, G., Besarab, A., Brayman, K., Diener-West, M., Harrison, D., Inker, L., Louis, T., McClellan, W., Rubin, J., Kusek, J., Star, R., Li, Yingnan, He, Yong, Falzon, Isabelle, Fairbourn, Brayden, Tingey, Spencer, Imrey, Peter B., Radeva, Milena K., Beck, Gerald J., Gassman, Jennifer J., Roy-Chaudhury, Prabir, Berceli, Scott A., Cheung, Alfred K., and Shiu, Yan-Ting

Published
2022
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4. Dynamic Remodeling of Human Arteriovenous Fistula Wall Obtained From Magnetic Resonance Imaging During the First 6 Months After Creation

Author

Li, Yingnan, primary, He, Yong, additional, Falzon, Isabelle, additional, Fairbourn, Brayden, additional, Tingey, Spencer, additional, Imrey, Peter B., additional, Radeva, Milena K., additional, Beck, Gerald J., additional, Gassman, Jennifer J., additional, Roy-Chaudhury, Prabir, additional, Berceli, Scott A., additional, Cheung, Alfred K., additional, Shiu, Yan-Ting, additional, Feldman, H., additional, Dember, L., additional, Farber, A., additional, Kaufman, J., additional, Stern, L., additional, LeSage, P., additional, Kivork, C., additional, Soares, D., additional, Malikova, M., additional, Allon, M., additional, Young, C., additional, Taylor, M., additional, Woodard, L., additional, Mangadi, K., additional, Roy-Chaudhury, P., additional, Munda, R., additional, Lee, T., additional, Alloway, R., additional, El-Khatib, M., additional, Canaan, T., additional, Pflum, A., additional, Thieken, L., additional, Campos-Naciff, B., additional, Huber, T., additional, Berceli, S., additional, Jansen, M., additional, McCaslin, G., additional, Trahan, Y., additional, Vazquez, M., additional, Vongpatanasin, W., additional, Davidson, I., additional, Hwang, C., additional, Lightfoot, T., additional, Livingston, C., additional, Valencia, A., additional, Dolmatch, B., additional, Fenves, A., additional, Hawkins, N., additional, Cheung, A., additional, Kraiss, L., additional, Kinikini, D., additional, Treiman, G., additional, Ihnat, D., additional, Sarfati, M., additional, Lavasani, I., additional, Maloney, M., additional, Schlotfeldt, L., additional, Himmelfarb, J., additional, Buchanan, C., additional, Clark, C., additional, Crawford, C., additional, Hamlett, J., additional, Kundzins, J., additional, Manahan, L., additional, Wise, J., additional, Beck, G., additional, Gassman, J., additional, Greene, T., additional, Imrey, P., additional, Li, L., additional, Alster, J., additional, Li, M., additional, MacKrell, J., additional, Radeva, M., additional, Weiss, B., additional, Wiggins, K., additional, Alpers, C., additional, Hudkins, K., additional, Wietecha, T., additional, Robbin, M., additional, Umphrey, H., additional, Alexander, L., additional, Abts, C., additional, Belt, L., additional, Vita, J., additional, Hamburg, N., additional, Duess, M., additional, Levit, A., additional, Higgins, H., additional, Ke, S., additional, Mandaci, O., additional, Snell, C., additional, Gravley, J., additional, Behnken, S., additional, Mortensen, R., additional, Chertow, G., additional, Besarab, A., additional, Brayman, K., additional, Diener-West, M., additional, Harrison, D., additional, Inker, L., additional, Louis, T., additional, McClellan, W., additional, Rubin, J., additional, Kusek, J., additional, and Star, R., additional

Published
2022
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7. Mineral Metabolism Disturbances and Arteriovenous Fistula Maturation

Author

Kubiak, Rachel W., primary, Zelnick, Leila R., additional, Hoofnagle, Andy N., additional, Alpers, Charles E., additional, Terry, Christi M., additional, Shiu, Yan-Ting, additional, Cheung, Alfred K., additional, de Boer, Ian H., additional, Robinson-Cohen, Cassianne, additional, Allon, Michael, additional, Dember, Laura M., additional, Feldman, Harold I., additional, Himmelfarb, Jonathan, additional, Huber, Thomas S., additional, Roy-Chaudhury, Prabir, additional, Vazquez, Miguel A., additional, Kusek, John W., additional, Beck, Gerald J., additional, Imrey, Peter B., additional, Kestenbaum, Bryan, additional, Feldman, H., additional, Dember, L., additional, Farber, A., additional, Kaufman, J., additional, Stern, L., additional, LeSage, P., additional, Kivork, C., additional, Soares, D., additional, Malikova, M., additional, Allon, M., additional, Young, C., additional, Taylor, M., additional, Woodard, L., additional, Mangadi, K., additional, Roy-Chaudhury, P., additional, Munda, R., additional, Lee, T., additional, Alloway, R., additional, El-Khatib, M., additional, Canaan, T., additional, Pflum, A., additional, Thieken, L., additional, Campos-Naciff, B., additional, Huber, T., additional, Berceli, S., additional, Jansen, M., additional, McCaslin, G., additional, Trahan, Y., additional, Vazquez, M., additional, Vongpatanasin, W., additional, Davidson, I., additional, Hwang, C., additional, Lightfoot, T., additional, Livingston, C., additional, Valencia, A., additional, Dolmatch, B., additional, Fenves, A., additional, Hawkins, N., additional, Cheung, A.K., additional, Kraiss, L., additional, Kinikini, D., additional, Treiman, G., additional, Ihnat, D., additional, Sarfati, M., additional, Shiu, Y.T., additional, Terry, C., additional, Lavasani, I., additional, Maloney, M., additional, Schlotfeldt, L., additional, Himmelfarb, J., additional, Buchanan, C., additional, Clark, C., additional, Crawford, C., additional, Hamlett, J., additional, Kundzins, J., additional, Manahan, L., additional, Wise, J., additional, Beck, G., additional, Gassman, J., additional, Greene, T., additional, Imrey, P., additional, Li, L., additional, Alster, J., additional, Li, M., additional, MacKrell, J., additional, Radeva, M., additional, Weiss, B., additional, Wiggins, K., additional, Alpers, C., additional, Hudkins, K., additional, Wietecha, T., additional, Robbin, M., additional, Umphrey, H., additional, Alexander, L., additional, Abts, C., additional, Belt, L., additional, Vita, J., additional, Hamburg, N., additional, Duess, M., additional, Levit, A., additional, Higgins, H., additional, Ke, S., additional, Mandaci, O., additional, Snell, C., additional, Gravley, J., additional, Behnken, S., additional, Mortensen, R., additional, Chertow (Chair), G., additional, Besarab, A., additional, Brayman, K., additional, Diener-West, M., additional, Harrison, D., additional, Inker, L., additional, Louis, T., additional, McClellan, W., additional, Rubin, J., additional, Kusek, J., additional, and Star, R., additional

Published
2019
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8. Relationships Between Clinical Processes and Arteriovenous Fistula Cannulation and Maturation: A Multicenter Prospective Cohort Study

Author

Allon, Michael, primary, Imrey, Peter B., additional, Cheung, Alfred K., additional, Radeva, Milena, additional, Alpers, Charles E., additional, Beck, Gerald J., additional, Dember, Laura M., additional, Farber, Alik, additional, Greene, Tom, additional, Himmelfarb, Jonathan, additional, Huber, Thomas S., additional, Kaufman, James S., additional, Kusek, John W., additional, Roy-Chaudhury, Prabir, additional, Robbin, Michelle L., additional, Vazquez, Miguel A., additional, Feldman, Harold I., additional, Feldman, H., additional, Dember, L., additional, Farber, A., additional, Kaufman, J., additional, Stern, L., additional, LeSage, P., additional, Kivork, C., additional, Soares, D., additional, Malikova, M., additional, Allon, M., additional, Young, C., additional, Taylor, M., additional, Woodard, L., additional, Mangadi, K., additional, Roy-Chaudhury, P., additional, Munda, R., additional, Lee, T., additional, Alloway, R., additional, El-Khatib, M., additional, Canaan, T., additional, Pflum, A., additional, Thieken, L., additional, Campos-Naciff, B., additional, Huber, T., additional, Berceli, S., additional, Jansen, M., additional, McCaslin, G., additional, Trahan, Y., additional, Vazquez, M., additional, Vongpatanasin, W., additional, Davidson, I., additional, Hwang, C., additional, Lightfoot, T., additional, Livingston, C., additional, Valencia, A., additional, Dolmatch, B., additional, Fenves, A., additional, Hawkins, N., additional, Cheung, A.K., additional, Kraiss, L., additional, Kinikini, D., additional, Treiman, G., additional, Ihnat, D., additional, Sarfati, M., additional, Mueller, M., additional, Lavasani, I., additional, Maloney, M., additional, Schlotfeldt, L., additional, Shiu, Y.T., additional, Terry, C., additional, Himmelfarb, J., additional, Buchanan, C., additional, Clark, C., additional, Crawford, C., additional, Hamlett, J., additional, Kundzins, J., additional, Manahan, L., additional, Wise, J., additional, Beck, G., additional, Gassman, J., additional, Greene, T., additional, Imrey, P., additional, Li, L., additional, Alster, J., additional, Li, M., additional, MacKrell, J., additional, Radeva, M., additional, Wiggins, K., additional, Weiss, B., additional, Alpers, C., additional, Hudkins, K., additional, Wietecha, T., additional, Robbin, M., additional, Umphrey, H., additional, Alexander, L., additional, Abts, C., additional, Belt, L., additional, Vita, J., additional, Hamburg, N., additional, Duess, M., additional, Levit, A., additional, Higgins, H., additional, Ke, S., additional, Mandaci, O., additional, Snell, C., additional, Gravley, J., additional, Behnken, S., additional, Mortensen, R., additional, Chertow, G., additional, Besarab, A., additional, Brayman, K., additional, Diener-West, M., additional, Harrison, D., additional, Inker, L., additional, Louis, T., additional, McClellan, W., additional, Rubin, J., additional, Kusek, J., additional, and Star, R., additional

Published
2018
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9. Crisis In The N.H.S.

Author

Alltree, M., Barraclough, R., Bras, J., Clifford-Jones, E., France, J. M., Gilchrist, Margaret M. C., Griffiths, Evan, Hamlett, J., Laine, J. B., Lloyd, Mary E., Marchant, J. M., Powell, T. P. S., Roberts, E. G. Gerald, Sissons, C. E., Smith, A. M. L., Thomas, I. Ap., Tinckler, L. F., Todd, R. S., Whitehouse, D. B., Whiting, R. J., Williams, A., Nott, M. G., and Vickers, P. R. J.

Published
1974

14. Vascular Function at Baseline in the Hemodialysis Fistula Maturation Study

Author

Dember, Laura M., primary, Imrey, Peter B., additional, Duess, Mai‐Ann, additional, Hamburg, Naomi M., additional, Larive, Brett, additional, Radeva, Milena, additional, Himmelfarb, Jonathan, additional, Kraiss, Larry W., additional, Kusek, John W., additional, Roy‐Chaudhury, Prabir, additional, Terry, Christi M., additional, Vazquez, Miguel A., additional, Vongpatanasin, Wanpen, additional, Beck, Gerald J., additional, Vita, Joseph A., additional, Feldman, H., additional, Farber, A., additional, Kaufman, J., additional, Stern, L., additional, LeSage, P., additional, Kivork, C., additional, Soares, D., additional, Malikova, M., additional, Allon, M., additional, Young, C., additional, Taylor, M., additional, Woodard, L., additional, Mangadi, K., additional, Munda, R., additional, Lee, T., additional, Alloway, R., additional, El‐Khatib, M., additional, Canaan, T., additional, Pflum, A., additional, Thieken, L., additional, Campos‐Naciff, B., additional, Huber, T., additional, Berceli, S., additional, Jansen, M., additional, McCaslin, G., additional, Trahan, Y., additional, Davidson, I., additional, Hwang, C., additional, Lightfoot, T., additional, Livingston, C., additional, Valencia, A., additional, Dolmatch, B., additional, Fenves, A., additional, Hawkins, N., additional, Cheung, A., additional, Kinikini, D., additional, Treiman, G., additional, Ihnat, D., additional, Sarfati, M., additional, Lavasani, I., additional, Maloney, M., additional, Schlotfeldt, L., additional, Buchanan, C., additional, Clark, C., additional, Crawford, C., additional, Hamlett, J., additional, Kundzins, J., additional, Manahan, L., additional, Wise, J., additional, Gassman, J., additional, Greene, T., additional, Li, L., additional, Alster, J., additional, Li, M., additional, MacKrell, J., additional, Weiss, B., additional, Wiggins, K., additional, Alpers, C., additional, Hudkins, K., additional, Wietecha, T., additional, Robbin, M., additional, Umphrey, H., additional, Alexander, L., additional, Abts, C., additional, Belt, L., additional, Levit, A., additional, Higgins, H., additional, Ke, S., additional, Mandaci, O., additional, Snell, C., additional, Gravley, J., additional, Behnken, S., additional, Mortensen, R., additional, Chertow, G., additional, Besarab, A., additional, Brayman, K., additional, Diener‐West, M., additional, Harrison, D., additional, Inker, L., additional, Louis, T., additional, McClellan, W., additional, Rubin, J., additional, and Star, R., additional

Published
2016
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15. Multiple preoperative and intraoperative factors predict early fistula thrombosis in the Hemodialysis Fistula Maturation Study

Author

Farber, Alik, primary, Imrey, Peter B., additional, Huber, Thomas S., additional, Kaufman, James M., additional, Kraiss, Larry W., additional, Larive, Brett, additional, Li, Liang, additional, Feldman, Harold I., additional, Feldman, H., additional, Dember, L., additional, Farber, A., additional, Kaufman, J., additional, Stern, L., additional, LeSage, P., additional, Kivork, C., additional, Soares, D., additional, Malikova, M., additional, Allon, M., additional, Young, C., additional, Taylor, M., additional, Woodard, L., additional, Mangadi, K., additional, Roy-Chaudhury, P., additional, Munda, R., additional, Lee, T., additional, Alloway, R., additional, El-Khatib, M., additional, Canaan, T., additional, Pflum, A., additional, Thieken, L., additional, Campos-Naciff, B., additional, Huber, T., additional, Berceli, S., additional, Jansen, M., additional, McCaslin, G., additional, Trahan, Y., additional, Vazquez, M., additional, Vongpatanasin, W., additional, Davidson, I., additional, Hwang, C., additional, Lightfoot, T., additional, Livingston, C., additional, Valencia, A., additional, Dolmatch, B., additional, Fenves, A., additional, Hawkins, N., additional, Cheung, A., additional, Kraiss, L., additional, Kinikini, D., additional, Treiman, G., additional, Ihnat, D., additional, Sarfati, M., additional, Lavasani, I., additional, Maloney, M., additional, Schlotfeldt, L., additional, Himmelfarb, J., additional, Buchanan, C., additional, Clark, C., additional, Crawford, C., additional, Hamlett, J., additional, Kundzins, J., additional, Manahan, L., additional, Wise, J., additional, Beck, G., additional, Gassman, J., additional, Greene, T., additional, Imrey, P., additional, Li, L., additional, Alster, J., additional, Li, M., additional, MacKrell, J., additional, Radeva, M., additional, Weiss, B., additional, Wiggins, K., additional, Alpers, C., additional, Hudkins, K., additional, Wietecha, T., additional, Robbin, M., additional, Umphrey, H., additional, Alexander, L., additional, Abts, C., additional, Belt, L., additional, Vita, J., additional, Hamburg, N., additional, Duess, M., additional, Levit, A., additional, Higgins, H., additional, Ke, S., additional, Mandaci, O., additional, Snell, C., additional, Gravley, J., additional, Behnken, S., additional, Mortensen, R., additional, Chertow, G., additional, Besarab, A., additional, Brayman, K., additional, Diener-West, M., additional, Harrison, D., additional, Inker, L., additional, Louis, T., additional, McClellan, W., additional, Rubin, J., additional, Kusek, J., additional, and Star, R., additional

Published
2016
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29. Potential Pollutants from Farm, Food and Yard Waste Composts at Differing Ages: Leaching Potential of Nutrients Under Column Experiments. Part II.

Author

Confesor Jr., R. B., Hamlett, J. M., Shannon, R. D., and Graves, R. E.

Subjects
*LEACHATE, *COMPOSTING, *ORGANIC wastes, *POLLUTION, *WASTE recycling, *LEACHING
Abstract

The quantity and quality of compost leachate depend on the age and composition of the composting materials and this study was undertaken to assess the changes in nutrient concentration and load of leachates coming from different compost mixtures and ages. Three different compost mixes (farm, food, yard waste composts) at different ages from flesh to maturity were leached with distilled and deionized water in laboratory column experiments. The leachate NO3-N concentration increased with the increase of compost age for all the compost mixtures. At maturity, the tot N content of the farm waste compost is more readily leached and NO3-N comprises a large proportion (> 68%) of the leachate tot N compared with the food (20 to 47%) and yard waste (1 to 19%) composts. The composting process and operation at early composting ages (0 to 9 weeks) pose less of a potential as a source of NO3-N than does the compost at maturity. The food waste had relatively higher leachate NH4-N load than the farm and yard waste composts, implying that the food waste compost had a greater potential as a source of NH4-N than the farm and the yard waste composts. At maturity the leachate NH4-N load (and concentration) was consistently low for all compost mixes, thus the composting operation poses less of a potential as source of NH4-N at maturity than at the early compost ages. Towards maturity, the leachate PO4-P load of the farm waste was higher than the leachate PO4-P load of the food and yard waste composts despite the lower P concentration of the farm waste compost than those of the food and yard waste composts. The results suggest that the form of P rather than its amount in the compost governs the leachate PO4-P content. The farm waste compost had a greater potential as a source of PO4-P than the food and the yard waste composts towards maturity. The amount of N and P was shown to vary with the compost mixture, compost age, and volume of leachate. These results can be used to assess at what stage of the composting period one would expect the greatest risk of potential N and P pollution for a specific compost mixture. Furthermore, appropriate best management practices (BMPs) could be applied to control these potential pollutants based on the findings of these study. [ABSTRACT FROM AUTHOR]

Published
2009
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30. Potential Pollutants from Farm, Food and Yard Waste Composts at Differing Ages: Part I. Physical and Chemical Properties.

Author

Confesor Jr., R. B., Hamlett, J. M., Shannon, R. D., and Graves, R. E.

Subjects
*POLLUTANTS, *FEEDSTOCK, *COMPOSTING, *WASTE recycling, *TEMPERATURE
Abstract

There is little information about the changes in physical and chemical properties of compost as a function of compost feedstocks and age of the compost mixture. As a consequence of this gap, the potential of compost to serve as a pollutant source relative to compost age (from initial mixing of raw feedstocks to mature compost) and feedstocks (i.e. % of food, manure, bedding, leaves, etc.) during the composting operation is not well known. This study was conducted to assess the variation of physical and chemical properties of compost under different mixes of source material and at differing ages (from freshly mixed to mature compost). The change in compost C:N ratio with age during composting was represented well (R² ≥ 0.81) by the equation Y = CNf (CNi-CNf)e(-X/r), where Y is the C:N ratio at any time X. CNf is the value of the C:N ratio as the composting time approaches infinity. CN is the initial C:N ratio at the beginning of the composting process and 1/r is the rate of decrease of the C:N ratio. The total (tot) N concentration of the mature composts was higher than the initial tot N concentration for all mixes investigated. There was a net decrease from the initial NH4-N concentrations at mixing to the final NH4-N concentrations at maturity for all compost mixtures. However, the variations of compost tot N and NH4-N concentrations with compost age were different between compost mixtures and years of experiment. The phosphorus (P) concentrations increased linearly with compost age. These results indicated that the potential of the compost as a source for N and P pollution changes during the composting process. The results also showed that the combination of C:N ratio, compost temperature, and compost NH4-N concentration could be used as simple but reliable indices for compost stability and maturity. [ABSTRACT FROM AUTHOR]

Published
2008
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31. Movement of Nitrogen and Phosphorus Downslope And Beneath a Manure and Organic Waste Composting Site.

Author

Confesor, R. B., Hamlett, J. M., Shannon, R. D., and Graves, R. E.

Subjects
*NITRATES, *PHOSPHORUS, *SOIL mineralogy, *NITRIC oxide, *SOIL leaching, *COMPOSTING
Abstract

This observational study was conducted to assess the movement of nitrate and phosphorus into and through the soil profile beneath a compacted gravel compost pad. The accumulation of nitrate and phosphorus in the vegetated tilter strip immediately downslope of the pad was also evaluated. Soil samples were taken from the composting site and the immediate surrounding area in two transects each for the Control (outside of compost pad), Old Pad (combined manure stack and compost area), and Extension pad (compost only area). Each transect was divided into three sampling zones: within the pad, in an intermediate area between the pad and the filter strip, and within the filter strip. Compost samples from windrows of different ages and mixes were also taken for laboratory leaching test to determine the potential of tile composts as source of nitrogen and phosphorus. The NO3-N concentrations in the soil beneath the compost pad of the Old Pad and Extension transects were higher than the soil NO3-N concentrations at the same depths and locations in the control transect. These results indicate that the compacted gravel pad did not fully prevent the downward movement and accumulation of NO3-N beneath the pad. The NO-N concentrations in the soil surface of the pad, intermediate between the pad and filter strip, and the filter strip areas of the Control and Old Pad transects were not statistically different; suggesting that there was negligible NO3-N surface movement and transport from the pad area to the filter strip. The average Mehlich3-P concentration at the soil surface in the pad area was less than in the intermediate and the filter strip areas, indicating that there was surface runoff and downslope transport of phosphorus from the compost site to the filter strip. Statistical analysis showed that there was no significant difference in the Mehlich3-P concentration between the filter strip areas of the Old Pad and Control transects; suggesting that the downslope transport of phosphorus from the compost pad to the filter strip had not yet caused significant accumulation of phosphorus in the filter strip relative to the adjacent field. Leaching tests indicated that during the composting process, mature composts pose a greater potential as a source of NO3-N leaching than the freshly-mixed composts. In contrast, the composting process and operation poses a greater potential as a source of PO4-P during the early stages of composting than with older composts. [ABSTRACT FROM AUTHOR]

Published
2007
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40. Resistant and Exploratory Techniques for Use in Semivariogram Analyses

Author

Hamlett, J. M., Horton, R., and Cressie, N. A. C.

Abstract

“Traditional” statistical analyses based on the assumption of independent observations are being replaced by spatial analyses that take account of correlations between neighboring observations. Geostatistics is one approach; it characterizes the spatial relationships of data via the variogram, which is in turn used for kriging (optimal, unbiased linear interpolation). Exploratory data analysis techniques, relying on resistant measures, graphical tools, and robustness ideas, can be used to help “model” the spatial structure of data. Data should fulfill certain stationarity conditions before computing and interpreting the semivariogram. Data of soil‐water pressure potential are analyzed by straight‐forward techniques that assure the data meet the implicit assumptions of stationarity (of the mean andthe variance) and at least symmetry. Stem‐and‐leaf plots and plots of mean vs. variance (or for a more resistant analysis, median vs. interquartile range squared) are used to assess the variance stationarity and data distributions. Median‐based techniques (rather than polynomial modeling and generalized least‐squares fitting of drift) are used to remove drift along both grid directions. Then the spatial structure is exposed through computing and interpreting semivariograms of the modified data.

Published
1986
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41. Personal View

Author

Hamlett, J D

Subjects
Medical Practice
Published
1988

47. TOPOISOMERASE II ASSOCIATED PROTEINS IN COLON CANCER CELLS.

Author

Barker, C.R., Rackstraw, S., Hamlett, J., Pennington, S.R., Watson, A.J.M., and Jenkins, J.R.

Subjects
DNA topoisomerase II, DNA replication, CHROMOSOMES
Abstract

Background and Aims: Topoisomerase II is an essential enzyme required for the viability of all cells. It plays important roles in DNA replication, recombination, chromosome segregation, mRNA expression, and maintenance of the nuclear scaffold. In humans there are two isoforms of the topoisomerase II enzyme designated α and β. Numerous topoisomerase II inhibitors are used in the treatment of acute cancers for remission induction, as salvage therapy and conditioning therapy for bone marrow transplantation. However, these chemotherapeutic drugs are highly toxic and cells are developing drug resistance. Therefore, it is of great importance to investigate the effect of current topoisomerase II inhibitors upon cells with regard to protein-protein interactions with topoisomerase II. These interacting proteins represent potential chemotherapeutic targets. Methods: Immunoprecipitations using anti-human topoisomerase II rabbit polyclonal antibodies were performed on proteins extracted from a pair of human colon cancer cell lines, HCT116 (WT, p53 KO, isogenic), Following treatment with etoposide (VP16), a topoisomerase II inhibitor. Samples were subjected to 1 and 2 dimensional electrophoresis and associated proteins identified by MALDI-TOF mass spectrometry and confirmed by counter-immunoprecipitations. Newly identified interactions were then disrupted using chemical inhibitors in growth inhibition assays. The effect of the drugs, when used in combination with topoisomerase II inhibitors was also tested. Results: Mass spectrometry and subsequent counterimmunoprecipitations identified heat shock protein 90 (HSP90) to be specifically associated with topoisomerase II. The use of VP16, a topoisomerase II poison, and geldanamycin (GA), an HSP90 inhibitor, when used in combination produced synergistic growth inhibition at concentrations where there is little or no effect when they are used individually. Conclusions: (1) There is a direct physical interaction between... [ABSTRACT FROM AUTHOR]

Published
2003

48. Material Women, 1750–1950: Consuming Desires and Collecting Practices, ed. Maureen Daly Goggin and Beth Fowkes TobinWomen and Things, 1750–1950: Gendered Material Strategies, ed. Maureen Daly Goggin and Beth Fowkes TobinWomen and the Material Culture ...

Author

Hamlett, J.

Subjects
NONFICTION
Abstract

The article reviews the books "Material Women, 1750–1950: Consuming Desires and Collecting Practices," "Women and Things, 1750–1950: Gendered Material Strategies," and "Women and the Material Culture of Needlework and Textiles, 1750–1950," all edited by Maureen Daly Goggin and Beth Fowkes Tobin.

Published
2011
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