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| 1 | Switchgrass Biochar Effects on Plant Biomass and Microbial Dynamics in Two Soils from Different Regions显示文摘Biochar amendments to soils may alter soil function and fertility in various ways, including through induced changes in the microbial community. We assessed microbial activity and community composition of two distinct clayey soil types, an Aridisol from Colorado(CO) in the U.S. Central Great Plains, and an Alfisol from Virginia(VA) in the southeastern USA following the application of switchgrass(Panicum virgatum) biochar. The switchgrass biochar was applied at four levels, 0%, 2.5%, 5%, and 10%, approximately equivalent to biochar additions of 0, 25, 50, and 100 t ha-1, respectively, to the soils grown with wheat(Triticum aestivum) in an eight-week growth chamber experiment. We measured wheat shoot biomass and nitrogen(N) content and soil nutrient availability and N mineralization rates, and characterized the microbial fatty acid methyl ester(FAME) profiles of the soils. Net N mineralization rates decreased in both soils in proportion to an increase in biochar levels, but the effect was more marked in the VA soil, where net N mineralization decreased from-2.1 to-38.4 mg kg-1. The 10% biochar addition increased soil p H, electrical conductivity, Mehlichand bicarbonate-extractable phosphorus(P), and extractable potassium(K) in both soil types. The wheat shoot biomass decreased from 17.7 to 9.1 g with incremental additions of biochar in the CO soil, but no difference was noted in plants grown in the VA soil. The FAME recovery assay indicated that the switchgrass biochar addition could introduce artifacts in analysis, so the results needed to be interpreted with caution. Non-corrected total FAME concentrations indicated a decline by 45% and 34% with 10% biochar addition in the CO and VA soils, respectively, though these differences became nonsignificant when the extraction efficiency correction factor was applied. A significant decline in the fungi:bacteria ratio was still evident upon correction in the CO soil with biochar. Switchgrass biochar had the potential to cause short-term negative impacts on plant biomass and alter soil microbial community structure unless measures were taken to add supplemental N and labile carbon(C). | Charlene N.KELLY Francisco C.CALDERóN Verónica ACOSTA-MARTíNEZ Maysoon M.MIKHA Joseph BENJAMIN David W.RUTHERFORD Colleen E.ROSTAD | 2015 | Pedosphere2015，25，3： | 11 |
| 2 | Incorporation of Biochar Carbon into Stable Soil Aggregates:The Role of Clay Mineralogy and Other Soil Characteristics显示文摘Aggregation and structure play key roles in water-holding capacity and stability of soils.In this study,the incorporation of carbon(C) from switchgrass biochar into stable aggregate size fractions was assessed in an Aridisol(from Colorado,USA) dominated by 2:1 clays and an Alfisol(from Virginia,USA) containing weathered mixed 1:1 and 2:1 mineralogy,to evaluate the effect of biochar addition on soil characteristics.The biochar was applied at 4 levels,0,25,50,and 100 g kg^(-1),to the soils grown with wheat in a growth chamber experiment.The changes in soil strength and water-holding capacity using water release curves were measured.In the Colorado soil,the proportion of soil occurring in large aggregates decreased,with concomitant increases in small size fractions.No changes in aggregate size fractions occurred in the Virginia soil.In the Colorado soil,C content increased from 3.3 to 16.8 g kg^(-1),whereas in the<53 μm fraction C content increased from 5.7 to 22.6 g kg^(-1) with 100 g kg^(-1)biochar addition.In the Virginia soil,C content within aggregate size fractions increased for each size fraction,except the>2 000 μm fraction.The greatest increase(from 6.2 to 22.0 g kg^(-1)) occurred in the 53–250 μm fraction.The results indicated that C was incorporated into larger aggregates in the Virginia soil,but remained largely unassociated to soil particles in the Colorado soil.Biochar addition had no significant effect on water-holding capacity or strength measurements.Adding biochar to more weathered soils with high native soil organic content may result in greater stabilization of incorporated C and result in less loss because of erosion and transport,compared with the soils dominated by 2:1 clays and low native soil organic content. | Charlene N. KELLY Joseph BENJAMIN Francisco C. CALDERON Maysoon M. MIKHA David W. RUTHERFORD Colleen E. ROSTAD | 2017 | Pedosphere2017，27，4： | 5 |
| 3 | Tillage and manure effects on soil and aggregate-associated carbon and nitrogen显示文摘 | Maysoon MM Charles WR | 2004 | Soil Science Society of America Journal2004，68，3： | 1 |
| 4 | Tillage and manure effects on soil and aggregate-associated carbon and nitrogen 显示文摘 | Mikha Maysoon M Charles W Rice | 2004 | Soil Science Society of America Journal2004，68，3： | 1 |
| 5 | Tillage and manure effects on soil and aggregate- associated carbon and nitrogen显示文摘 | MAYSOON M M CHARLES W R | 2004 | Soil Sci Soc Am J2004，68，： | 1 |
| 6 | Endovascular management of nonvariceal upper gastrointestinal hemorrhage显示文摘 | Ahmed K. Abdel-Aal Asim K. Bag Souheil Saddekni Maysoon F. Hamed Fatma Y. Ahmed | 2013 | European Journal of Gastroenterology & Hepatology2013，，7： | 1 |
| 7 | Tillage and manure effects on soil and aggregate-associated carbon and nitrogen显示文摘 | Maysoon M M Charles W R | 2004 | Soil Science Society of America Journal2004，68，： | 1 |
| 8 | The interaction of the 11S globulin-like protein of kiwifruit seeds with pepsin显示文摘 | Maysoon Rassam William A Laing | 2006 | J Plant Seienee2006，171，： | 1 |
| 9 | An Ecological Study of Lactic Acid Bacteria: Isolation of New Strains of Lactococcus Including Lactococcus lactis subspecies cremoris 1显示文摘 | Maysoon S. Salama Tamara Musafija-Jeknic William E. Sandine Stephen J. Giovannoni | 1995 | Journal of Dairy Science1995，，5： | 1 |
| 10 | Refined physical map of the spinal muscular atrophy gene (SMA) region at 5q13 based on YAC and cosmid contiguous arrays显示文摘 | Natalie Roy Michael D. Mclean Anne Besner-Johnston Charles Lefebvre Maysoon Salih John D. Carpten Arthur H.M. Burghes Zahra Yaraghi Joh-E Ikeda Robert G. Korneluk Alexander E. Mackenzie | 1995 | Genomics1995，，3： | 1 |
| 11 | Tillage and manure effects onsoil and aggregate-associated carbon and nitrogen 显示文摘 | MAYSOON M M CHARLES W R | 2004 | Soil Sci SocAm J2004，68，： | 1 |
| 12 | Microbial communities and enzyme activities in soils under alternative crop rota- tions compared to wheat-fallow for the Central Great Plains 显示文摘 | Vernica A M Maysoon M Mikha F | 2007 | Applied Soil Ecology2007，37，： | 1 |
| 13 | The burden of tuberculosis in crisis- affected populations: a systematic review 显示文摘 | William Kimbrough Vanessa Saliba Maysoon Dahab | 2012 | Lancet Infect Dis2012，12，： | 1 |
| 14 | Carbon and nitrogen mineralization as affected by drying and wetting cycles 显示文摘 | MAYSOON M M CHARLES W R GEORGE A M | 2005 | Soil biology and biochemistry2005，37，： | 1 |
| 15 | Carbon and nitrogen mineralization as affected by drying and wetting cycles显示文摘 | Maysoon M. Mikha Charles W. Rice George A. Milliken | 2004 | Soil Biology and Biochemistry2004，，2： | 1 |
| 16 | Tillage and manure effects on soil and aggregate-associated carbon and nitrogen 显示文摘 | Maysoon M M Charles W R | 2004 | Soil Sci Soe Am J2004，68，： | 1 |
| 17 | Purification and characterization of phytoeystatins from kiwifruit cortex and seeds 显示文摘 | Maysoon R William A Laing | 2004 | Phytochemistry2004，65，： | 1 |
| 18 | Tillage and manure effects on soil and aggregate- associated carbon and nitrogen 显示文摘 | Maysoon M M Charles W R | 2004 | Soil Sci- ence Society of America Jounrnal2004，68，： | 1 |
| 19 | Intelligent Identification and Resolution of Software Requirement Conflicts:Assessment and Evaluation显示文摘Considerable research has demonstrated how effective requirements engineering is critical for the success of software projects.Requirements engineering has been established and recognized as one of the most important aspects of software engineering as of late.It is noteworthy to mention that requirement consistency is a critical factor in project success,and conflicts in requirements lead to waste of cost,time,and effort.A considerable number of research studies have shown the risks and problems caused by working with requirements that are in conflict with other requirements.These risks include running overtime or over budget,which may lead to project failure.At the very least,it would result in the extra expended effort.Various studies have also stated that failure in managing requirement conflicts is one of the main reasons for unsuccessful software projects due to high cost and insufficient time.Many prior research studies have proposed manual techniques to detect conflicts,whereas other research recommends automated approaches based on human analysis.Moreover,there are different resolutions for conflicting requirements.Our previous work proposed a scheme for dealing with this problem using a novel intelligent method to detect conflicts and resolve them.A rule-based system was proposed to identify conflicts in requirements,and a genetic algorithm(GA)was used to resolve conflicts.The objective of this work is to assess and evaluate the implementation of the method of minimizing the number of conflicts in the requirements.The methodology implemented comprises two different stages.The first stage,detecting conflicts using a rule-based system,demonstrated a correct result with 100% accuracy.The evaluation of using the GA to resolve and reduce conflicts in the second stage also displayed a good result and achieved the desired goal as well as the main objective of the research. | Maysoon Aldekhail Marwah Almasri | 2022 | Computer Systems Science & Engineering2022，40，2： | 0 |
| 20 | Efficient Computer Aided Diagnosis System for Hepatic Tumors Using Computed Tomography Scans显示文摘One of the leading causes of mortality worldwide is liver cancer.The earlier the detection of hepatic tumors,the lower the mortality rate.This paper introduces a computer-aided diagnosis system to extract hepatic tumors from computed tomography scans and classify them into malignant or benign tumors.Segmenting hepatic tumors from computed tomography scans is considered a challenging task due to the fuzziness in the liver pixel range,intensity values overlap between the liver and neighboring organs,high noise from computed tomography scanner,and large variance in tumors shapes.The proposed method consists of three main stages;liver segmentation using Fast Generalized Fuzzy C-Means,tumor segmentation using dynamic thresholding,and the tumor’s classification into malignant/benign using support vector machines classifier.The performance of the proposed system was evaluated using three liver benchmark datasets,which are MICCAI-Sliver07,LiTS17,and 3Dircadb.The proposed computer adided diagnosis system achieved an average accuracy of 96.75%,sensetivity of 96.38%,specificity of 95.20%and Dice similarity coefficient of 95.13%. | Yasmeen Al-Saeed Wael A.Gab-Allah Hassan Soliman Maysoon F.Abulkhair Wafaa M.Shalash Mohammed Elmogy | 2022 | Computers, Materials & Continua2022，，6： | 0 |
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