Search Results - "Bwalya, M"

Numerical Simulation of a Single and Double-Rotor Impact Crusher Using Discrete Element Method by Murray M. Bwalya, Ngonidzashe Chimwani

“…The Discrete element method (DEM) is an invaluable tool for studying comminution as it provides detailed information that can help with process analysis as…”
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Development of a More Descriptive Particle Breakage Probability Model by Murray M. Bwalya, Ngonidzashe Chimwani

“…Single-particle breakage test is becoming increasingly popular, as researchers seek to understand fracture response that is purely a function of the material…”
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Milling Studies in an Impact Crusher I: Kinetics Modelling Based on Population Balance Modelling by Ngonidzashe Chimwani, Murray M. Bwalya

“…A number of experiments were conducted on a laboratory batch impact crusher to investigate the effects of particle size and impeller speed on grinding rate and…”
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Exploratory development of a rotary offset crusher by Nghipulile, T, Bwalya, M., Moys, M., Simonsen, H.

“…The quest for efficiency in comminution is an ongoing concern as comminution usually constitutes a major cost component in the metal production industry. Such…”
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Maternal mid‐upper arm circumference to predict small for gestational age: Findings in a Zambian cohort by Appiagyei, Ashley, Vwalika, Bellington, Spelke, M. Bridget, Conner, Madelyn G., Mabula‐Bwalya, Chileshe M., Kasaro, Margaret P., Honart, Anne West, Kumwenda, Andrew, Stringer, Elizabeth M., Stringer, Jeffrey S. A., Price, Joan T.

“…Objective To compare the performance of mid upper arm circumference (MUAC) and body mass index (BMI) for prediction of small for gestational age (SGA) in…”
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Association of mid‐trimester maternal angiogenic biomarkers with small‐for‐gestational‐age infants in an urban Zambian cohort: a nested case‐control study by Mabula‐Bwalya, Chileshe M., Smithmyer, Megan E., Mwape, Humphrey, Chipili, Gabriel, Conner, Madelyn, Vwalika, Bellington, De Paris, Kristina, Stringer, Jeffrey S.A., Price, Joan T.

“…Objective To investigate whether angiogenic biomarker concentrations differ between women who deliver small‐for‐gestational‐age (SGA) infants (<10th centile…”
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Increasing facility delivery through maternity waiting homes for women living far from a health facility in rural Zambia: a quasi‐experimental study by Lori, JR, Munro‐Kramer, ML, Liu, H, McGlasson, KL, Zhang, X, Lee, H, Ngoma, T, Kaiser, JL, Bwalya, M, Musonda, G, Sakala, I, Perosky, JE, Fong, RM, Boyd, CJ, Chastain, P, Rockers, PC, Hamer, DH, Biemba, G, Vian, T, Bonawitz, R, Lockhart, N, Scott, NA

“…Objective To report on the effectiveness of a standardised core Maternity Waiting Home (MWH) model to increase facility deliveries among women living >10 km…”
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Vaginal progesterone to prevent preterm delivery among HIV-infected pregnant women in Zambia: A feasibility study by Price, Joan T, Phiri, Winifreda M, Freeman, Bethany L, Vwalika, Bellington, Winston, Jennifer, Mabula-Bwalya, Chileshe M, Mulenga, Helen B, Stringer, Jeffrey S A

“…Antenatal vaginal progesterone (VP) reduces the risk of preterm birth (PTB) in women with shortened cervical length, and we hypothesize that it may also…”
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Acceptability of a trial of vaginal progesterone for the prevention of preterm birth among HIV-infected women in Lusaka, Zambia: A mixed methods study by Price, Joan T, Mabula-Bwalya, Chileshe M, Freeman, Bethany L, Carda-Auten, Jessica, Phiri, Winifreda M, Chibwe, Kasapo, Kantumoya, Patricia, Vwalika, Bellington, Stringer, Jeffrey S A, Golin, Carol E

“…Antenatal progesterone prevents preterm birth (PTB) in women with a short cervix or prior PTB in daily vaginal or weekly injectable formulations, respectively…”
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Exploring ball size distribution in coal grinding mills by Bwalya, M.M., Moys, M.H., Finnie, G.J., Mulenga, F.K.

“…Tube mills use steel balls as grinding media. Due to wear in the abrasive environment it is necessary to charge new balls periodically to maintain a steady…”
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Scale-up of batch grinding data for simulation of industrial milling of platinum group minerals ore by Chimwani, Ngonidzashe, Mulenga, François K., Hildebrandt, Diane, Glasser, David, Bwalya, Murray M.

“…[Display omitted] •Milling parameters of a UG2 ore were measured in the laboratory.•The milling parameters were scaled-up to industrial mill using empirical…”
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Circulating angiogenic factors and HIV among pregnant women in Zambia: a nested case–control study by Smithmyer, Megan E., Mabula-Bwalya, Chileshe M., Mwape, Humphrey, Chipili, Gabriel, Spelke, Bridget M., Kasaro, Margaret P., De Paris, Kristina, Vwalika, Bellington, Sebastião, Yuri V., Stringer, Jeffrey S.A., Price, Joan T.

“…Abstract Background Maternal HIV increases the risk of adverse birth outcomes including preterm birth, fetal growth restriction, and stillbirth, but the…”
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A Technical and Economic Comparison of Ball Mill Limestone Comminution with a Vertical Roller Mill by Swart, Cara, Gaylard, Jeremy M., Bwalya, M. Mulenga

“…Wet flue gas desulfurization (WFGD), using limestone with forced oxidation (LSFO), is a common Flue gas desulfurization (FGD) process where limestone reacts…”
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Exploring the End-Liner Forces Using DEM Software by Ngonidzashe Chimwani, Murray M. Bwalya

“…The main roles of liners are to protect the mill shell and promote effective ball motion for grinding. For this reason the liner profile is carefully selected…”
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TRANSDISCIPLINARY DEVELOPMENT AND ADOPTION OF IRRIGATION INNOVATIONS IN AFRICA. LINKAGES TO PRINCIPLES OF CAADP: A COMMENTARY by Phiri, E., Bwalya, M., Froebrich, J., Mweetwa, A.M., Chishala, B.H., Meebelo, N., Shepande, C.M., De Witt, M., De Clercq, W.

“…Expanding arable land under irrigation is cardinal in the quest to attain Africa's aspiration of transforming agriculture and realizing its true value and…”
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A validation study of the King stratification model by Woollacott, L C, Bwalya, M, Mabokela, L

“…This paper presents a study on the ability of the King stratification model to describe density stratification patterns that are achieved under idealized…”
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Application of the attainable region technique to the analysis of a full-scale mill in open circuit by Mulenga, F K, Bwalya, M M

“…The application of the attainable region (AR) technique to the analysis of ball milling is currently limited to batch data. This paper introduces the use of…”
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Application of the attainable region method to determine optimal conditions for milling and leaching by Hlabangana, N., Danha, G., Bwalya, M.M., Hildebrandt, D., Glasser, D.

“…In this work, we apply the attainable region (AR) method to laboratory data in order to optimize the milling and leaching processes of a low grade gold ore. To…”
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Discrete element method (DEM) modelling of evolving mill liner profiles due to wear. Part II. Industrial case study by Kalala, J.T., Bwalya, M., Moys, M.H.

“…The wear of tumbling mill liners influences the load behaviour and consequently the performance and efficiency of tumbling mills. The ability to accurately…”
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Electroconvulsive Therapy Anesthesia Practice Patterns: Results of A UK Postal Survey by Bwalya, Godfrey M, Srinivasan, Venkatasubramanian, Wang, Michael

“…OBJECTIVE:To review anesthesia practice patterns associated with electroconvulsive therapy (ECT) in the UK. METHODS:A 12-item questionnaire survey on the…”
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