Search Results - "Dawit, Solomon"

Organic matter stabilization in soil microaggregates: implications from spatial heterogeneity of organic carbon contents and carbon forms by Lehmann, Johannes, Kinyangi, James, Solomon, Dawit

“…This study investigates the spatial distribution of organic carbon (C) in free stable microaggregates (20-250 μm; not encapsulated within macroaggregates) from…”
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Spatial complexity of soil organic matter forms at nanometre scales by Lehmann, Johannes, Solomon, Dawit, Kinyangi, James, Dathe, Lena, Wirick, Sue, Jacobsen, Chris

“…Organic matter in soil has been suggested to be composed of a complex mixture of identifiable biopolymers rather than a chemically complex humic material…”
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Black carbon affects the cycling of non-black carbon in soil by Liang, Biqing, Lehmann, Johannes, Sohi, Saran P., Thies, Janice E., O’Neill, Brendan, Trujillo, Lucerina, Gaunt, John, Solomon, Dawit, Grossman, Julie, Neves, Eduardo G., Luizão, Flavio J.

“…Black carbon (BC) is an important fraction of many soils worldwide and plays an important role in global C biogeochemistry. However, few studies have examined…”
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Diagnostic accuracy of Xpert MTB/RIF assay and non-molecular methods for the diagnosis of tuberculosis lymphadenitis by Fantahun, Mengistu, Kebede, Abebaw, Yenew, Bazezew, Gemechu, Tufa, Mamuye, Yeshiwondm, Tadesse, Mengistu, Brhane, Bereket, Jibriel, Aisha, Solomon, Dawit, Yaregal, Zelalem

“…Tuberculous lymphadenitis (TBLN) diagnosis remains a challenge in resource limited countries like Ethiopia. Most diagnostic centers in Ethiopia use smear…”
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Adoption of complementary climate-smart agricultural technologies: lessons from Lushoto in Tanzania by Ogada, Maurice Juma, Radeny, Maren, Recha, John, Dawit, Solomon

“…Abstract Background Agriculture is important for economic growth and development in many countries in Sub-Saharan Africa, including Tanzania. However,…”
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Micro- and nano-environments of carbon sequestration: Multi-element STXM–NEXAFS spectromicroscopy assessment of microbial carbon and mineral associations by Solomon, Dawit, Lehmann, Johannes, Harden, Jennifer, Wang, Jian, Kinyangi, James, Heymann, Karen, Karunakaran, Chithra, Lu, Yingshen, Wirick, Sue, Jacobsen, Chris

“…Soil represents the largest reservoir of terrestrial organic C, and plays a critical role in global C cycling. In light of predicted climate change and a more…”
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Filling the phosphorus fertilizer gap in developing countries by Simons, Andrew, Solomon, Dawit, Chibssa, Worku, Blalock, Garrick, Lehmann, Johannes

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C 1s K-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy for characterizing functional group chemistry of black carbon by Heymann, Karen, Lehmann, Johannes, Solomon, Dawit, Schmidt, Michael W.I., Regier, Thomas

“…► The complexity of black carbon within environmental matrices presents a challenge to distinguish it from other carbon. ► NEXAFS spectroscopy was used to…”
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Analysis of Climate Variability and Trends in Southern Ethiopia by Abrham Belay, Teferi Demissie, John W. Recha, Christopher Oludhe, Philip M. Osano, Lydia A. Olaka, Dawit Solomon, Zerihun Berhane

“…This study investigated the trends and variability of seasonal and annual rainfall and temperature data over southern Ethiopia using time series analysis for…”
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Carbon (1s) NEXAFS Spectroscopy of Biogeochemically Relevant Reference Organic Compounds by Solomon, Dawit, Lehmann, Johannes, Kinyangi, James, Liang, Biqing, Heymann, Karen, Dathe, Lena, Hanley, Kelly, Wirick, Sue, Jacobsen, Chris

“…Natural organic matter (NOM) is a highly active component of soils and sediments, and plays an important role in global C cycling. However, NOM has defied…”
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Going to scale-From community-based to population-wide genetic improvement and commercialized sheep meat supply in Ethiopia by Mueller, Joaquin, Haile, Aynalem, Getachew, Tesfaye, Santos, Bruno, Rekik, Mourad, Belay, Berhanu, Solomon, Dawit, Yeheyis, Likawent, Rischkowsky, Barbara

“…Community-based breeding programs (CBBPs) have shown, at pilot scale, to be effective and beneficial in achieving genetic progress and in improving livelihoods…”
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Burden and genotype distribution of high-risk Human Papillomavirus infection and cervical cytology abnormalities at selected obstetrics and gynecology clinics of Addis Ababa, Ethiopia by Ali, Kirubel Eshetu, Mohammed, Ibrahim Ali, Difabachew, Mesfin Nigussie, Demeke, Dawit Solomon, Haile, Tasew, Ten Hove, Robert-Jan, Kumssa, Tsegaye Hailu, Woldu, Zufan Lakew, Haile, Eshetu Lemma, Tullu, Kassu Desta

“…Human papillomavirus is recognized as a major cause of cervical cancer. It is estimated that annually, 7,095 women are diagnosed with cervical cancer and 4,732…”
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Knowledge of climate change and adaptation by smallholder farmers: evidence from southern Ethiopia by Belay, Abrham, Oludhe, Christopher, Mirzabaev, Alisher, Recha, John W., Berhane, Zerihun, Osano, Philip M., Demissie, Teferi, Olaka, Lydia A., Solomon, Dawit

“…Climate change has the greatest negative impact on low-income countries, which burdens agricultural systems. Climate change and extreme weather events have…”
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How to succeed in implementing community-based breeding programs: Lessons from the field in Eastern and Southern Africa by Haile, Aynalem, Getachew, Tesfaye, Rekik, Mourad, Abebe, Ayele, Abate, Zelalem, Jimma, Addisu, Mwacharo, Joram M, Mueller, Joaquin, Belay, Berhanu, Solomon, Dawit, Hyera, Emil, Nguluma, Athumani S, Gondwe, Timothy, Rischkowsky, Barbara

“…Breeding programs involving either centralized nucleus schemes and/or importation of exotic germplasm for crossbreeding were not successful and sustainable in…”
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Evaluation of acute and sub-acute toxicity of selected traditional antiurolithiatic medicinal plant extracts in Wistar albino rats by Alelign, Tilahun, Chalchisa, Dinkenesh, Fekadu, Netsanet, Solomon, Dawit, Sisay, Tesfaye, Debella, Asfaw, Petros, Beyene

“…Achyranthes aspera, Chenopodium murale, Satureja punctata, Rumex abyssinicus and Aloe pulcherrima are traditionally used to treat urolithiasis in Ethiopia…”
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Micro- and nano-environments of C sequestration in soil: A multi-elemental STXM–NEXAFS assessment of black C and organomineral associations by Solomon, Dawit, Lehmann, Johannes, Wang, Jian, Kinyangi, James, Heymann, Karen, Lu, Yingshen, Wirick, Sue, Jacobsen, Chris

“…Black C is an essential component of the terrestrial C pool and its formation is often credited as a CO2 sink by transferring the fast-cycling C from the…”
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Impact of Climate Change on the Hydrology of the Upper Awash River Basin, Ethiopia by Emiru, Nega Chalie, Recha, John Walker, Thompson, Julian R., Belay, Abrham, Aynekulu, Ermias, Manyevere, Alen, Demissie, Teferi D., Osano, Philip M., Hussein, Jabir, Molla, Mikias Biazen, Mengistu, Girma Moges, Solomon, Dawit

“…This study investigated the impacts of climate change on the hydrology of the Upper Awash Basin, Ethiopia. A soil and water assessment tool (SWAT) model was…”
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Soil Nutrient Contents in East African Climate-Smart Villages: Effects of Climate-Smart Agriculture Interventions by Recha, John Walker, Ambaw, Gebermedihin, Nigussie, Abebe, Radeny, Maren, Solomon, Dawit

“…Short-term and plot-level trials mostly produce data on the advantages of climate-smart agriculture (CSA) practices on food security in a changing climate…”
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Long-term impacts of anthropogenic perturbations on dynamics and speciation of organic carbon in tropical forest and subtropical grassland ecosystems by SOLOMON, DAWIT, LEHMANN, JOHANNES, KINYANGI, JAMES, AMELUNG, WULF, LOBE, INGO, PELL, ALICE, RIHA, SUSAN, NGOZE, SOLOMON, VERCHOT, LOU, MBUGUA, DAVID, SKJEMSTAD, JAN, SCHÄFER, THORSTEN

“…Anthropogenic perturbations have profoundly modified the Earth's biogeochemical cycles, the most prominent of these changes being manifested by global carbon…”
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High spatial resolution seasonal crop yield forecasting for heterogeneous maize environments in Oromia, Ethiopia by Tesfaye, Kindie, Takele, Robel, Shelia, Vakhtang, Lemma, Esayas, Dabale, Addisu, Sibiry Traore, Pierre C., Solomon, Dawit, Hoogenboom, Gerrit

“…Seasonal climate variability determines crop productivity in Ethiopia, where rainfed smallholder farming systems dominate in the agriculture production. Under…”
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