2,003 results on '"Asare P"'
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2. Datopotamab–deruxtecan plus durvalumab in early-stage breast cancer: the sequential multiple assignment randomized I-SPY2.2 phase 2 trial
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Shatsky, Rebecca A, Trivedi, Meghna S, Yau, Christina, Nanda, Rita, Rugo, Hope S, Davidian, Marie, Tsiatis, Butch, Wallace, Anne M, Chien, A Jo, Stringer-Reasor, Erica, Boughey, Judy C, Omene, Coral, Rozenblit, Mariya, Kalinsky, Kevin, Elias, Anthony D, Vaklavas, Christos, Beckwith, Heather, Williams, Nicole, Arora, Mili, Nangia, Chaitali, Roussos Torres, Evanthia T, Thomas, Brittani, Albain, Kathy S, Clark, Amy S, Falkson, Carla, Hershman, Dawn L, Isaacs, Claudine, Thomas, Alexandra, Tseng, Jennifer, Sanford, Amy, Yeung, Kay, Boles, Sarah, Chen, Yunni Yi, Huppert, Laura, Jahan, Nusrat, Parker, Catherine, Giridhar, Karthik, Howard, Frederick M, Blackwood, M Michele, Sanft, Tara, Li, Wen, Onishi, Natsuko, Asare, Adam L, Beineke, Philip, Norwood, Peter, Brown-Swigart, Lamorna, Hirst, Gillian L, Matthews, Jeffrey B, Moore, Brian, Symmans, W Fraser, Price, Elissa, Heditsian, Diane, LeStage, Barbara, Perlmutter, Jane, Pohlmann, Paula, DeMichele, Angela, Yee, Douglas, van ’t Veer, Laura J, Hylton, Nola M, and Esserman, Laura J
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Biomedical and Clinical Sciences ,Oncology and Carcinogenesis ,Clinical Trials and Supportive Activities ,Precision Medicine ,Women's Health ,Cancer ,Clinical Research ,Breast Cancer ,6.1 Pharmaceuticals ,Good Health and Well Being ,Medical and Health Sciences ,Immunology ,Biomedical and clinical sciences ,Health sciences - Abstract
Sequential adaptive trial designs can help accomplish the goals of personalized medicine, optimizing outcomes and avoiding unnecessary toxicity. Here we describe the results of incorporating a promising antibody-drug conjugate, datopotamab-deruxtecan (Dato-DXd) in combination with programmed cell death-ligand 1 inhibitor, durvalumab, as the first sequence of therapy in the I-SPY2.2 phase 2 neoadjuvant sequential multiple assignment randomization trial for high-risk stage 2/3 breast cancer. The trial includes three blocks of treatment, with initial randomization to different experimental agent(s) (block A), followed by a taxane-based regimen tailored to tumor subtype (block B), followed by doxorubicin-cyclophosphamide (block C). Subtype-specific algorithms based on magnetic resonance imaging volume change and core biopsy guide treatment redirection after each block, including the option of early surgical resection in patients predicted to have a high likelihood of pathologic complete response, which is the primary endpoint assessed when resection occurs. There are two primary efficacy analyses: after block A and across all blocks for six prespecified HER2-negative subtypes (defined by hormone receptor status and/or response-predictive subtypes). In total, 106 patients were treated with Dato-DXd/durvalumab in block A. In the immune-positive subtype, Dato-DXd/durvalumab exceeded the prespecified threshold for success (graduated) after block A; and across all blocks, pathologic complete response rates were equivalent to the rate expected for the standard of care (79%), but 54% achieved that result after Dato-DXd/durvalumab alone (block A) and 92% without doxorubicin-cyclophosphamide (after blocks A + B). The treatment strategy across all blocks graduated in the hormone-negative/immune-negative subtype. No new toxicities were observed. Stomatitis was the most common side effect in block A. No patients receiving block A treatment alone had adrenal insufficiency. Dato-DXd/durvalumab is a promising therapy combination that can eliminate standard chemotherapy in many patients, particularly the immune-positive subtype.ClinicalTrials.gov registration: NCT01042379 .
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- 2024
3. Pan-African Citizen Science e-Lab: An Emerging Online Platform for Astronomy Research, Education and Outreach in Africa
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Marcel, Miracle Chibuzor, Diaby, Kassamba Abdel Aziz, Guennoun, Meryem, Nabifo, Betty Rose, Elattar, Mohamed, Rajaonarivelo, Andoniaina, Pius, Privatus, Kgobathe, Molly Nkamogelang, Luis, Immanuel, Shilunga, Sigrid, Etteyeb, Nejmeddine, Qhomane, Keketso, Nyangi, Samuel, Kalunga, Tresford Chilufya, Assano, Nunes Alfredo, Jequecene, Edson Domingos, Joseph, Mafuka Lusala, Sudum, Esaenwi, Gerald, Jorbedom Leelabari, Gore, Christopher Tombe Louis, Hosny, Kareem Waleed, Yasser, Nagat, Franck, Jocelyn, Kourouma, Mamoudou, Bobb, Baboucarr, Jaiteh, Kebab, Sylla, Salma, Obame, Hans Essone, Kiyeng, Dennis, Ngwanw, Thobekile Sandra, Simon, Tawanda Kelvin, Sulayman, Saja Alhoush, Regaibi, Salma, Yahaya, Souley, Ornela, Tengwi Mogou, Viyuyi, Henry Sanderson, Matambo, Fortune Tatenda, Asare-Darko, Matthias, Gbaba, Christian Kontoa Koussouwa, da Silva, Moisés, Joseph, Ntahompagaze, Gomes, Gilberto, Mkhabela, Bongiwe Portia, Bvumbwe, Bauleni, Nkhowani, Tshombe, Gahou, Mawugnon Axel, Abotsi-Masters, Sarah, Simbizi, René, Mugisha, Salomon, Saeed, Ahmed, Eldaw, Mohammed Yahya Alradi, Thomas, Allen, ridha, Ben Abdallah, kaseha, Dieumerci, Baradei, Sherine Ahmed El, Hussein, Nahla Hazem, Fabrice, Bado, Anekwe, Ngozika Frances, Ramessur, Arvind, Koroma, Mohamed Ali, Safary, Harold, Leonardo, Oosthuizen, Dlamini, Mdumiseni Wisdom Dabulizwe, Djabbi, Mamadou Mahamat, Angela, Nonofo, Jalloh, Mamaja, Balde, Mamadou, Olayiwola, Joy, Ibharalu, Elijah, Tchangole, Thierry Martial, Memberu, Kirubel, Dinsa, Lidia, and Ezeakunne, Chidozie Gospel
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Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Physics Education - Abstract
Citizen science offers an opportunity for ordinary people, known as citizen scientists or citizen astronomers in the context of astronomy, to contribute to scientific research. The Pan-African Citizen Science e-Lab (PACS e-Lab) was founded to promote and engage the African public in citizen science and soft astronomy research to advance space research and exploration and enhance space education and outreach. PACS e-Lab, in collaboration with several international astronomy research, education, and outreach organizations, currently runs several projects including but not limited to asteroid search, exoplanet photometry, research writing for peer-reviewed publications, astrophoto visual development, and Amateur Radio contact with astronauts aboard the International Space Station (ARISS). Despite several challenges, the group has engaged over 600 Africans from more than 40 countries and is working towards covering the entire continent in the future. PACS e-Lab's development efforts resonate with seven United Nations Sustainable Development Goals (UN-SDGs)., Comment: 32 pages,17 figures, 2 Tables
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- 2024
4. Pan-African Asteroid Search Campaign: Africa's Contribution to Planetary Defense
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Marcel, Miracle Chibuzor, Diaby, Kassamba Abdel Aziz, Guennoun, Meryem, Nabifo, Betty Rose, Elattar, Mohamed, Rajaonarivelo, Andoniaina, Pius, Privatus, Kgobathe, Molly Nkamogelang, Luis, Immanuel, Shilunga, Sigrid, Etteyeb, Nejmeddine, Qhomane, Keketso, Nyangi, Samuel, Kalunga, Tresford Chilufya, Assano, Nunes Alfredo, Jequecene, Edson Domingos, Joseph, Mafuka Lusala, Sudum, Esaenwi, Gerald, Jorbedom Leelabari, Gore, Christopher Tombe Louis, Hosny, Kareem Waleed, Yasser, Nagat, Franck, Jocelyn, Kourouma, Mamoudou, Bobb, Baboucarr, Jaiteh, Kebab, Sylla, Salma, Obame, Hans Essone, Kiyeng, Dennis, Ngwanw, Thobekile Sandra, Simon, Tawanda Kelvin, Sulayman, Saja Alhoush, Regaibi, Salma, Yahaya, Souley, Ornela, Tengwi Mogou, Viyuyi, Henry Sanderson, Matambo, Fortune Tatenda, Asare-Darko, Matthias, Gbaba, Christian Kontoa Koussouwa, da Silva, Moisés, Joseph, Ntahompagaze, Gomes, Gilberto, Mkhabela, Bongiwe Portia, Bvumbwe, Bauleni, Nkhowani, Tshombe, Gahou, Mawugnon Axel, Abotsi-Masters, Sarah, Simbizi, René, Mugisha, Salomon, Saeed, Ahmed, Eldaw, Mohammed Yahya Alradi, Thomas, Allen, ridha, Ben Abdallah, kaseha, Dieumerci, Baradei, Sherine Ahmed El, Hussein, Nahla Hazem, Fabrice, Bado, Anekwe, Ngozika Frances, Ramessur, Arvind, Koroma, Mohamed Ali, Safary, Harold, Leonardo, Oosthuizen, Dlamini, Mdumiseni Wisdom Dabulizwe, Djabbi, Mamadou Mahamat, Angela, Nonofo, Jalloh, Mamaja, Balde, Mamadou, Olayiwola, Joy, Ibharalu, Elijah, Tchangole, Thierry Martial, Memberu, Kirubel, Dinsa, Lidia, and Ezeakunne, Chidozie Gospel
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Physics - Physics Education ,Astrophysics - Earth and Planetary Astrophysics - Abstract
Asteroid search is a global effort for planetary defense. The International Astronomical Search Collaboration (IASC) is the leading global educational outreach program that provides high-quality astronomical datasets to citizen scientists to discover asteroids. Since December 4, 2020, the Pan-African Citizen Science e-Lab (PACS e-Lab) has been IASC's biggest partner on the continent in recruiting and training citizen scientists in asteroid search endeavors. Over 30 asteroids have been discovered by 60 citizen scientists. About 595 citizen scientists from over 40 countries have been engaged in the project up to the time of composing this literature. The group is set to expand its endeavors to the rest of the continent and aims to engage thousands of citizen scientists., Comment: 16 pages, 10 figures, 5 Tables
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- 2024
5. Structural damage detection via hierarchical damage information with volumetric assessment
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Agyemang, Isaac Osei, Chen, Jianwen, Zeng, Liaoyuan, Adjei-Mensah, Isaac, Acheampong, Daniel, Boateng, Gordon Owusu, and Baffour, Adu Asare
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Computer Science - Computer Vision and Pattern Recognition - Abstract
Image environments and noisy labels hinder deep learning-based inference models in structural damage detection. Post-detection, there is the challenge of reliance on manual assessments of detected damages. As a result, Guided-DetNet, characterized by Generative Attention Module (GAM), Hierarchical Elimination Algorithm (HEA), and Volumetric Contour Visual Assessment (VCVA), is proposed to mitigate complex image environments, noisy labeling, and post-detection manual assessment of structural damages. GAM leverages cross-horizontal and cross-vertical patch merging and cross foreground-background feature fusion to generate varied features to mitigate complex image environments. HEA addresses noisy labeling using hierarchical relationships among classes to refine instances given an image by eliminating unlikely class categories. VCVA assesses the severity of detected damages via volumetric representation and quantification leveraging the Dirac delta distribution. A comprehensive quantitative study, two robustness tests, and an application scenario based on the PEER Hub Image-Net dataset substantiate Guided-DetNet's promising performances. Guided-DetNet outperformed the best-compared models in a triple classification task by a difference of not less than 3% and not less than 2% in a dual detection task under varying metrics.
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- 2024
6. Seismic facies analysis using machine learning techniques: a review and case study
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Owusu, Bernard Asare, Boateng, Cyril Dziedzorm, Asare, Van-Dycke Sarpong, Danuor, Sylvester Kojo, Adenutsi, Caspar Daniel, and Quaye, Jonathan Atuquaye
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- 2024
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7. The Experiences of Female Headteachers of Boys' Senior High Schools in Ghana
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Raymond Tangonyire, Gloria Nyame, Kwame Bediako Asare, and Amina Jangu Alhassan
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This study examines the experiences of the only three female headteachers leading boys' senior high schools (SHS) in Ghana to understand the uniqueness of their career journeys, on-the-job experiences and the leadership strategies. Qualitative phenomenological approach was used for the study. The three women were interviewed multiple times over a period of five months between November 2020 and March 2021. The data were inductively and deductively analysed to identify themes that help to tell their story. The results of this study show that early exposure to role models and socialisation into the power of positive thinking at the family, school and societal levels imprint values that inspired the participants to top leadership positions and the strategies they deployed -- blending of motherliness and professionalism, networking and ethical leadership. The female headteachers are bridge builders and transformational leaders who are suitable for leadership in the twenty-first century. This study identifies several implications for female headteachership including: initial preparation for aspirants of school leadership positions, ongoing professional development, and support of female school leaders. The Ministry of Education should provide women with more headteachership or leadership opportunities in schools.
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- 2024
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8. Tissue-based T cell activation and viral RNA persist for up to 2 years after SARS-CoV-2 infection
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Peluso, Michael J, Ryder, Dylan, Flavell, Robert R, Wang, Yingbing, Levi, Jelena, LaFranchi, Brian H, Deveau, Tyler-Marie, Buck, Amanda M, Munter, Sadie E, Asare, Kofi A, Aslam, Maya, Koch, Walter, Szabo, Gyula, Hoh, Rebecca, Deswal, Monika, Rodriguez, Antonio E, Buitrago, Melissa, Tai, Viva, Shrestha, Uttam, Lu, Scott, Goldberg, Sarah A, Dalhuisen, Thomas, Vasquez, Joshua J, Durstenfeld, Matthew S, Hsue, Priscilla Y, Kelly, J Daniel, Kumar, Nitasha, Martin, Jeffrey N, Gambhir, Aruna, Somsouk, Ma, Seo, Youngho, Deeks, Steven G, Laszik, Zoltan G, VanBrocklin, Henry F, and Henrich, Timothy J
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Biomedical and Clinical Sciences ,Immunology ,Infectious Diseases ,Clinical Research ,Coronaviruses ,Lung ,Emerging Infectious Diseases ,Humans ,COVID-19 ,RNA ,Viral ,SARS-CoV-2 ,T-Lymphocytes ,Male ,Middle Aged ,Female ,Lymphocyte Activation ,Positron-Emission Tomography ,Adult ,Aged ,Time Factors ,Biological Sciences ,Medical and Health Sciences ,Medical biotechnology ,Biomedical engineering - Abstract
The mechanisms of postacute medical conditions and unexplained symptoms after SARS-CoV-2 infection [Long Covid (LC)] are incompletely understood. There is growing evidence that viral persistence, immune dysregulation, and T cell dysfunction may play major roles. We performed whole-body positron emission tomography imaging in a well-characterized cohort of 24 participants at time points ranging from 27 to 910 days after acute SARS-CoV-2 infection using the radiopharmaceutical agent [18F]F-AraG, a selective tracer that allows for anatomical quantitation of activated T lymphocytes. Tracer uptake in the postacute COVID-19 group, which included those with and without continuing symptoms, was higher compared with prepandemic controls in many regions, including the brain stem, spinal cord, bone marrow, nasopharyngeal and hilar lymphoid tissue, cardiopulmonary tissues, and gut wall. T cell activation in the spinal cord and gut wall was associated with the presence of LC symptoms. In addition, tracer uptake in lung tissue was higher in those with persistent pulmonary symptoms specifically. Increased T cell activation in these tissues was also observed in many individuals without LC. Given the high [18F]F-AraG uptake detected in the gut, we obtained colorectal tissue for in situ hybridization of SARS-CoV-2 RNA and immunohistochemical studies in a subset of five participants with LC symptoms. We identified intracellular SARS-CoV-2 single-stranded spike protein-encoding RNA in rectosigmoid lamina propria tissue in all five participants and double-stranded spike protein-encoding RNA in three participants up to 676 days after initial COVID-19, suggesting that tissue viral persistence could be associated with long-term immunologic perturbations.
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- 2024
9. Factors Associated With the Discontinuation of Two Short-Course Tuberculosis Preventive Therapies in Programmatic Settings in the United States.
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Asare-Baah, Michael, Salmon-Trejo, LaTweika, Venkatappa, Thara, Garfein, Richard, Aiona, Kaylynn, Haas, Michelle, and Séraphin, Marie
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TB treatment ,latent tuberculosis infection ,preventive therapy ,treatment adherence ,tuberculosis - Abstract
BACKGROUND: The objective of this study was to investigate timing and risk factors for discontinuation of short-course tuberculosis preventive therapy (TPT) comparing directly observed 3-month isoniazid/rifapentine (3HP) vs self-administered 4-month rifampin (4R). METHODS: This was a subanalysis of a 6-month health department cohort (2016-2017) of 993 latent tuberculosis infection (LTBI) patients initiating 3HP (20%) or 4R (80%). Time at risk of TPT discontinuation was compared across regimens. Risk factors were assessed using mixed-effects Cox models. RESULTS: Short-course TPT discontinuation was higher with 4R (31% vs 14%; P < .0001), though discontinuation timing was similar. Latino ethnicity (hazard ratio [HR], 1.80; 95% CI, 1.20-2.90) and adverse events (HR, 4.30; 95% CI, 2.60-7.30) increased 3HP discontinuation risk. Social-behavioral factors such as substance misuse (HR, 12.00; 95% CI, 2.20-69.00) and congregate living (HR, 21.00; 95% CI, 1.20-360.00) increased 4R discontinuation risk. CONCLUSIONS: TPT discontinuation differed by regimen, with distinct risk factors. Addressing social determinants of health within TPT programs is critical to enhance completion rates and reduce TB disease risk in marginalized populations.
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- 2024
10. A Study of the Engagement of Ghanaian High School Students in Authentic Science Using Model Biodigesters
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Ortiz, Rita, Vicario, Elizabeth, Owusu, Kofi Acheaw, Feldman, Allan, Alsultan, Jawaher, Asare, Elijah, Ghebremichael, Kebreab, and Ergas, Sarina J.
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- 2024
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11. Numerical Evaluation of Multi-well Cyclic Gas Injection Technique for Enhanced Oil Recovery in Composite Tight Oil Reservoirs
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Asare, Kingsley, Ejike, Chinedu, and Okere, Chinedu J.
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- 2024
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12. Vision Loss in Children from Immigrant and Nonimmigrant Households: Evidence from the National Survey of Children’s Health 2018–2020
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Asare, Afua O., Stagg, Brian C., Sharareh, Nasser, Stipelman, Carole, Del Fiol, Guilherme, and Smith, Justin D.
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- 2024
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13. Scale-Related Variations in Soil Loss and Validation of the RUSLE Model in Anambra State, Nigeria
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Ezeh, C. U., Adjei, K. A., Schönbrodt-Stitt, S., Igwe, O., Asare, M. Y., and Preko, K.
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- 2024
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14. Cognitive imperialism in artificial intelligence: counteracting bias with indigenous epistemologies
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Ofosu-Asare, Yaw
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- 2024
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15. DNA-sensing inflammasomes cause recurrent atherosclerotic stroke
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Cao, Jiayu, Roth, Stefan, Zhang, Sijia, Kopczak, Anna, Mami, Samira, Asare, Yaw, Georgakis, Marios K., Messerer, Denise, Horn, Amit, Shemer, Ruth, Jacqmarcq, Charlene, Picot, Audrey, Green, Jack P., Schlegl, Christina, Li, Xinghai, Tomas, Lukas, Dutsch, Alexander, Liman, Thomas G., Endres, Matthias, Wernsdorf, Saskia R., Fürle, Christina, Carofiglio, Olga, Zhu, Jie, Brough, David, Hornung, Veit, Dichgans, Martin, Vivien, Denis, Schulz, Christian, Dor, Yuval, Tiedt, Steffen, Sager, Hendrik B., Grosse, Gerrit M., and Liesz, Arthur
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- 2024
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16. Unmasking gender disparities in cocoa farming: the case of female land ownership in the Ashanti and Western North regions of Ghana
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Buabeng, Kwabena, Löhr, Katharina, Asare, Richard, and Sieber, Stefan
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- 2024
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17. Elemental composition of post-wildfire biomass ashes and partly burned woody species in Bohemian Switzerland National Park, Czech Republic
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Asare, Michael O., Midula, Pavol, Oravová, Lucie, Kuráň, Pavel, and Hejcman, Michal
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- 2024
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18. Second-line anti-tuberculosis drug resistance testing in Ghana identifies the first extensively drug-resistant tuberculosis case
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Osei-Wusu S, Amo Omari M, Asante-Poku A, Darko Otchere I, Asare P, Forson A, Otu J, Antonio M, and Yeboah-Manu D
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Tuberculosis ,Drug-resistance ,Diagnosis ,Infectious and parasitic diseases ,RC109-216 - Abstract
Stephen Osei-Wusu,1,2 Michael Amo Omari,3 Adwoa Asante-Poku,1 Isaac Darko Otchere,1 Prince Asare,1 Audrey Forson,3 Jacob Otu,4 Martin Antonio,4 Dorothy Yeboah-Manu1 1Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; 2West Africa Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Ghana; 3Department of Chest Diseases, Korle-Bu Teaching Hospital, Accra, Ghana; 4Medical Research Council Unit, Fajara, The Gambia Background: Drug resistance surveillance is crucial for tuberculosis (TB) control. Therefore, our goal was to determine the prevalence of second-line anti-TB drug resistance among diverse primary drug-resistant Mycobacterium tuberculosis complex (MTBC) isolates in Ghana. Materials and methods: One hundred and seventeen MTBC isolates with varying first-line drug resistance were analyzed. Additional resistance to second-line anti-TB drugs (streptomycin [STR], amikacin [AMK] and moxifloxacin [MOX]) was profiled using the Etest and GenoType MTBDRsl version 2.0. Genes associated with resistance to AMK and MOX (gyrA, gyrB, eis, rrs, tap, whiB7 and tlyA) were then analyzed for mutation. Results: Thirty-seven (31.9%) isolates had minimum inhibitory concentration (MIC) values ≥2 µg/mL against STR while 12 (10.3%) isolates had MIC values ≥1 µg/mL for AMK. Only one multidrug-resistant (MDR) isolate (Isolate ID: TB/Nm 919) had an MIC value of ≥0.125 µg/mL for MOX (MIC = 3 µg/mL). This isolate also had the highest MIC value for AMK (MIC = 16 µg/mL) and was confirmed as resistant to AMK and MOX by the line probe assay GenoType MTBDRsl version 2.0. Mutations associated with the resistance were: gyrA (G88C) and rrs (A514C and A1401G). Conclusion: Our findings suggest the need to include routine second-line anti-TB drug susceptibility testing of MDR/rifampicin-resistant isolates in our diagnostic algorithm. Keywords: tuberculosis, drug resistance, diagnosis, Ghana, XDR
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- 2018
19. Neoadjuvant Trebananib plus Paclitaxel-based Chemotherapy for Stage II/III Breast Cancer in the Adaptively Randomized I-SPY2 Trial-Efficacy and Biomarker Discovery.
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Albain, Kathy, Yau, Christina, Petricoin, Emanuel, Wolf, Denise, Lang, Julie, Chien, A, Haddad, Tufia, Forero-Torres, Andres, Wallace, Anne, Kaplan, Henry, Pusztai, Lajos, Euhus, David, Nanda, Rita, Elias, Anthony, Clark, Amy, Godellas, Constantine, Boughey, Judy, Isaacs, Claudine, Tripathy, Debu, Lu, Janice, Yung, Rachel, Gallagher, Rosa, Wulfkuhle, Julia, Brown-Swigart, Lamorna, Krings, Gregor, Chen, Yunn, Potter, David, Stringer-Reasor, Erica, Blair, Sarah, Asare, Smita, Wilson, Amy, Hirst, Gillian, Singhrao, Ruby, Buxton, Meredith, Clennell, Julia, Sanil, Ashish, Berry, Scott, Asare, Adam, Matthews, Jeffrey, DeMichele, Angela, Hylton, Nola, Melisko, Michelle, Perlmutter, Jane, Rugo, Hope, Symmans, W, Vant Veer, Laura, Yee, Douglas, Berry, Donald, and Esserman, Laura
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Female ,Humans ,Antineoplastic Combined Chemotherapy Protocols ,Bayes Theorem ,Breast Neoplasms ,Neoadjuvant Therapy ,Paclitaxel ,Receptor ,ErbB-2 ,Receptor ,TIE-2 ,Recombinant Fusion Proteins ,Trastuzumab - Abstract
PURPOSE: The neutralizing peptibody trebananib prevents angiopoietin-1 and angiopoietin-2 from binding with Tie2 receptors, inhibiting angiogenesis and proliferation. Trebananib was combined with paclitaxel±trastuzumab in the I-SPY2 breast cancer trial. PATIENTS AND METHODS: I-SPY2, a phase II neoadjuvant trial, adaptively randomizes patients with high-risk, early-stage breast cancer to one of several experimental therapies or control based on receptor subtypes as defined by hormone receptor (HR) and HER2 status and MammaPrint risk (MP1, MP2). The primary endpoint is pathologic complete response (pCR). A therapy graduates if/when it achieves 85% Bayesian probability of success in a phase III trial within a given subtype. Patients received weekly paclitaxel (plus trastuzumab if HER2-positive) without (control) or with weekly intravenous trebananib, followed by doxorubicin/cyclophosphamide and surgery. Pathway-specific biomarkers were assessed for response prediction. RESULTS: There were 134 participants randomized to trebananib and 133 to control. Although trebananib did not graduate in any signature [phase III probabilities: Hazard ratio (HR)-negative (78%), HR-negative/HER2-positive (74%), HR-negative/HER2-negative (77%), and MP2 (79%)], it demonstrated high probability of superior pCR rates over control (92%-99%) among these subtypes. Trebananib improved 3-year event-free survival (HR 0.67), with no significant increase in adverse events. Activation levels of the Tie2 receptor and downstream signaling partners predicted trebananib response in HER2-positive disease; high expression of a CD8 T-cell gene signature predicted response in HR-negative/HER2-negative disease. CONCLUSIONS: The angiopoietin (Ang)/Tie2 axis inhibitor trebananib combined with standard neoadjuvant therapy increased estimated pCR rates across HR-negative and MP2 subtypes, with probabilities of superiority >90%. Further study of Ang/Tie2 receptor axis inhibitors in validated, biomarker-predicted sensitive subtypes is warranted.
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- 2024
20. An Exploratory Study on the Null Curriculum in the Basic Education System in Ghana
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Boateng, Philip, Caballes, Dennis G., Aboagye, Michael Osei, Asare, Kotor, and Anane, Vivian
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This study explored the prevalence of the null curriculum in the Ghanaian basic school education system. It also sought to identify the main reasons behind teachers' omission of specific topics or experiences from the basic school curriculum. Three hundred seventy-five basic school teachers from kindergarten, primary, and junior high schools participated in the study. A 32-item self-designed questionnaire was used to collect data for the analysis. Descriptive and inferential statistics were used to analyze the data. The study participants identified lack of resources, the problematic nature of some topics, insufficient time, and inadequate knowledge and skills as factors contributing to the prevalence of null curriculum in Ghanaian schools. The findings show that a null curriculum is prevalent in the Ghanaian basic education system. The study found no statistically significant difference between teacher characteristics (i.e., teacher status and grade level) and the reasons behind omitting some topics or experiences. Implications of the study findings for educational theory and practice are discussed.
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- 2023
21. Groundwater geochemical evolution, origin and quality in the Lower Pra Basin, Ghana: Insights from hydrogeochemistry, multivariate statistical analysis, mineral saturation indices, stable isotopes (δ2H and δ18O) and geostatistical analysis
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Ganyaglo, Samuel Y., Binyiako, Joel Y., Teye, Emmanuel M., Gibrilla, Abass, Abdul-Wahab, Dickson, Edusei, Samuel, Amponsah, Paulina, Egbi, Courage D., Dampare, Samuel B., and Asare, Ebenezer Aquisman
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- 2024
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22. Recent progress in printing flexible electronics: A review
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Bi, Sheng, Gao, BuHan, Han, Xu, He, ZhengRan, Metts, Jacob, Jiang, ChengMing, and Asare-Yeboah, Kyeiwaa
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- 2024
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23. A Transparent and Valid Framework for Rockburst Assessment: Unifying Interpretable Machine Learning and Conformal Prediction
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Ibrahim, Bemah, Tetteh-Asare, Abigail, and Ahenkorah, Isaac
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- 2024
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24. Significant Mobility Enhancement by Semicrystalline Polymers Additive for Crystallization and Charge Transport in Organic Field-effect Transistor
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Bi, Sheng, Yao, Zehui, Han, Xu, Bi, Congjie, Wang, Xiaolong, Chen, Qiangqiang, Wang, Yao, Wang, Rongyi, Asare-Yeboah, Kyeiwaa, He, Zhengran, and Song, Ruonan
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- 2024
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25. Industrial metal and cryptocurrency market plummets: Interdependence, policy uncertainty, or investor sentiments?
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Woode, John Kingsley, Adam, Anokye M., Owusu Junior, Peterson, and Idun, Anthony Adu-Asare
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- 2024
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26. Updates on the Version 9 American Joint Committee on Cancer Staging System for Anal Cancer
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Janczewski, Lauren M., Asare, Elliot A., and Goodman, Karyn A.
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- 2024
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27. Cross-sectional imaging of mimics of inflammatory bowel disease: not everything is Crohn’s disease or ulcerative colitis
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Asare, Belinda, Huang, Chenchan, Melia, Joanna, Fishman, Elliot K., and Gawande, Rakhee
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- 2024
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28. Long COVID manifests with T cell dysregulation, inflammation and an uncoordinated adaptive immune response to SARS-CoV-2.
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Yin, Kailin, Luo, Xiaoyu, Thomas, Reuben, Shin, Min-Gyoung, Neidleman, Jason, Andrew, Alicer, Young, Kyrlia, Ma, Tongcui, Hoh, Rebecca, Anglin, Khamal, Argueta, Urania, Lopez, Monica, Valdivieso, Daisy, Asare, Kofi, Deveau, Tyler-Marie, Munter, Sadie, Ibrahim, Rania, Ständker, Ludger, Lu, Scott, Goldberg, Sarah, Lee, Sulggi, Lynch, Kara, Kelly, J, Roan, Nadia, Münch, Jan, Deeks, Steven, Martin, Jeffrey, Henrich, Timothy, Peluso, Michael, and Huang, Beatrice
- Subjects
Female ,Male ,Humans ,SARS-CoV-2 ,Post-Acute COVID-19 Syndrome ,CD8-Positive T-Lymphocytes ,COVID-19 ,Immunity ,Humoral ,Antibodies ,Viral ,Inflammation - Abstract
Long COVID (LC) occurs after at least 10% of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections, yet its etiology remains poorly understood. We used omic assays and serology to deeply characterize the global and SARS-CoV-2-specific immunity in the blood of individuals with clear LC and non-LC clinical trajectories, 8 months postinfection. We found that LC individuals exhibited systemic inflammation and immune dysregulation. This was evidenced by global differences in T cell subset distribution implying ongoing immune responses, as well as by sex-specific perturbations in cytolytic subsets. LC individuals displayed increased frequencies of CD4+ T cells poised to migrate to inflamed tissues and exhausted SARS-CoV-2-specific CD8+ T cells, higher levels of SARS-CoV-2 antibodies and a mis-coordination between their SARS-CoV-2-specific T and B cell responses. Our analysis suggested an improper crosstalk between the cellular and humoral adaptive immunity in LC, which can lead to immune dysregulation, inflammation and clinical symptoms associated with this debilitating condition.
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- 2024
29. Protein signaling and drug target activation signatures to guide therapy prioritization: Therapeutic resistance and sensitivity in the I-SPY 2 Trial
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Gallagher, Rosa I, Wulfkuhle, Julia, Wolf, Denise M, Brown-Swigart, Lamorna, Yau, Christina, O’Grady, Nicholas, Basu, Amrita, Lu, Ruixiao, Campbell, Michael J, Magbanua, Mark J, Coppé, Jean-Philippe, Investigators, I-SPY 2, Asare, Smita M, Sit, Laura, Matthews, Jeffrey B, Perlmutter, Jane, Hylton, Nola, Liu, Minetta C, Symmans, W Fraser, Rugo, Hope S, Isaacs, Claudine, DeMichele, Angela M, Yee, Douglas, Pohlmann, Paula R, Hirst, Gillian L, Esserman, Laura J, van ‘t Veer, Laura J, and Petricoin, Emanuel F
- Subjects
Biomedical and Clinical Sciences ,Oncology and Carcinogenesis ,Immunology ,Women's Health ,Precision Medicine ,Breast Cancer ,Genetics ,Clinical Research ,Cancer ,4.1 Discovery and preclinical testing of markers and technologies ,Detection ,screening and diagnosis ,5.1 Pharmaceuticals ,Development of treatments and therapeutic interventions ,Good Health and Well Being ,Humans ,Drug Resistance ,Neoplasm ,Neoadjuvant Therapy ,Triple Negative Breast Neoplasms ,Biomarkers ,Gene Expression Profiling ,I-SPY 2 Investigators ,LCM ,RPPA ,biomarker ,breast cancer ,clinical trial ,drug target ,neoadjuvant ,phosphoprotein ,protein ,resistance ,Biomedical and clinical sciences - Abstract
Molecular subtyping of breast cancer is based mostly on HR/HER2 and gene expression-based immune, DNA repair deficiency, and luminal signatures. We extend this description via functional protein pathway activation mapping using pre-treatment, quantitative expression data from 139 proteins/phosphoproteins from 736 patients across 8 treatment arms of the I-SPY 2 Trial (ClinicalTrials.gov: NCT01042379). We identify predictive fit-for-purpose, mechanism-of-action-based signatures and individual predictive protein biomarker candidates by evaluating associations with pathologic complete response. Elevated levels of cyclin D1, estrogen receptor alpha, and androgen receptor S650 associate with non-response and are biomarkers for global resistance. We uncover protein/phosphoprotein-based signatures that can be utilized both for molecularly rationalized therapeutic selection and for response prediction. We introduce a dichotomous HER2 activation response predictive signature for stratifying triple-negative breast cancer patients to either HER2 or immune checkpoint therapy response as a model for how protein activation signatures provide a different lens to view the molecular landscape of breast cancer and synergize with transcriptomic-defined signatures.
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- 2023
30. Theological Reflections on the Temptation of Christ based on a comparative study between the Accounts of Matthew and Luke
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Samuel Asare-Antwako and Isaac Boaheng
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temptation of christ ,gospel of matthew ,gospel of luke ,theological reflections ,Social Sciences - Abstract
This paper explored the theological implications of the temptation of Christ as depicted in the Gospels of Matthew and Luke. Through a comparative study of these accounts, the paper examined the nuanced differences and similarities. The paper conducted a textual analysis of key expressions in the text to arrive at a theological conclusion. The analysis examined the significance of Christ’s temptation in relation to his identity, mission, and the broader narrative of salvation history. The study revealed variations in the narrative placement and structure of the temptation accounts in both Mathew and Luke due to their different motifs. The study also revealed the crucial role of the Holy Spirit in the temptation accounts in both Matthew and Luke, with different nuances. Again, the study also revealed that the nuanced differences in the duration, the nature of the fast and the temptation contents in Matthew and Luke highlight various theological emphases and narrative strategies. By juxtaposing the perspectives presented in Matthew and Luke, this paper seeks to deepen understanding of the theological insights conveyed through the temptation narrative, highlighting its relevance for contemporary Christian reflection and spiritual formation. The paper concludes by asserting that the temptation accounts in Matthew and Luke emphasized the sovereignty and providence of God and the authority of scripture. It also stressed the interplay between pneumatology and human experience during temptation periods and placed Jesus ahead as the model for spiritual dependence on God.
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- 2024
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31. Impact of COVID-19 lockdown measures on mother and child health – the case of Ghana
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Eric Koka, Emmanuel Narh, Adwoa Asante-Poku, Daniel Kwame Ampofo Adjei, Diana Sebbie, Ishaque Mintah Siam, Prince Asare, David McCoy, Audrey Gadzekpo, and Dorothy Yeboah-Manu
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COVID-19 ,Lockdown ,Maternal health ,Child health ,Policy response ,Ghana ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background The lockdown measures in response to the coronavirus disease (COVID-19) have led to a wide range of unintended consequences for women and children. Until the outbreak of COVID-19, attention was on reducing maternal and infant mortality due to pregnancy and delivery complications. The aim of this study was to interrogate the impact of lockdown measures on women and children in two contrasting districts in Ghana – Krobo Odumase and Ayawaso West Wuogon. Methods This study adopted the mixed-method approach using both qualitative and quantitative data. The qualitative study relied on two data collection methods to explore the impacts of COVID-19 control measures on women and children in Ghana. These were: Focus Group Discussions (FGDs; n = 12) and Key Informant Interviews (KIIs; n = 18). The study complemented the qualitative data with survey data - household surveys (n = 78) which were used to support the nutrition and school closure data; and policy data gathered from government websites consisting of government responses to COVID-19. The qualitative data was analysed using the thematic approach with codes generated apriori with the NVIVO software. The quantitative data used percentages and frequencies. Results Engagements with participants in the study revealed that the lockdown measures implemented in Ghana had consequences on child and maternal health, and the health care system as a whole. Our study revealed, for example, that there was a decrease in antenatal and postnatal attendance in hospitals. Childhood vaccinations also came to a halt. Obesity and malnutrition were found to be common among children depending on the location of our study participants (urban and rural areas respectively). Our study also revealed that TB, Malaria and HIV treatment seeking reduced due to the fear of going to health facilities since those ailments manifest similar symptoms as COVID 19. Conclusion Government responded to COVID-19 using different strategies however the policy response resulted in both intended and unintended consequences especially for women and children in Ghana. It is recommended that national policy directions should ensure the continuous provision of child and maternal healthcare services which are essential health services during lockdowns.
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- 2024
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32. Serological Detection of Newcastle Disease Virus Antibody in Vaccinated and Non-Vaccinated Indigenous Chickens and Guinea Fowls in Atacora and Donga, Northern Benin
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Edmond Onidje, Oluwole Oni, Benjamin Emikpe, Vitus Burimuah, Patrick Amponsah, and Derrick Asare
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benin ,guinea fowl ,indigenous chickens ,newcastle disease virus (ndv) ,seroprevalence ,Zoology ,QL1-991 ,Veterinary medicine ,SF600-1100 ,Animal biochemistry ,QP501-801 - Abstract
Poultry farming is crucial for the livelihoods of small-scale producers in the Northen Benin, yet the industry faces challenges from diseases like ND, which threaten both poultry health and economic stability. This study investigates the seroprevalence of Newcastle Disease Virus (NDV) among indigenous chickens and guinea fowl in the Atacora and Donga regions of Northern Benin, addressing a significant gap in regional poultry health data. A cross-sectional study was designed, sampling a total of 300 birds, including 191 indigenous chickens and 109 guinea fowl, from six districts. Systematic random sampling was employed to select smallholder farms, and blood samples were collected for Hemagglutination inhibition (HI) tests to detect NDV antibodies. Statistical analyses, including chi-square tests, determined associations and differences in seroprevalence between regions and species. Results revealed notable variations in NDV seroprevalence between the two regions. In Atacora, 59.22% of chickens tested positive for NDV antibodies, with 52.33% of non-vaccinated and 94.12% of vaccinated chickens showing positive results. In Donga, the overall seroprevalence was 46.59%, with 27.78% of non-vaccinated and 59.62% of vaccinated chickens testing positive. A chi-square test indicated a significant difference in NDV seroprevalence between the two regions for chickens (x2 = 12.901; P = 0.024). For guinea fowls, seroprevalence was 63.53% in Atacora and 62.50% in Donga, with no significant difference observed (x2 = 1.102; P = 0.954). This study provides the first serological data on NDV prevalence in northern Benin, highlighting the endemic nature of NDV and the critical epidemiological role of guinea fowls due to frequent exposure and field infections, especially in the Atacora region. It recommends enhancing vaccination coverage, improving biosecurity measures, and conducting further research to isolate and characterize virus strains to develop more effective control strategies.
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- 2024
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33. Prevalence of schistosomiasis among school children at Esuekyir community in the Central Region of Ghana
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Denzel Opoku-Kwabi, Belinda Sevor, Emmanuel Adu Sarpong, Pius Kwasi Sam, Abigail Agyen Frimpong, Porschier Aninagyei Marfo, Michael Asare, Emmanuella Akumeniwaa Nkrumah, Bernard Boakye Badu, Alberta Serwah Anning, and George Ghartey-Kwansah
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Schistosoma haematobium ,S. mansoni ,Urogenital schistosomiasis ,Intestinal schistosomiasis ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Schistosomiasis, an endemic neglected tropical disease in areas with poor sanitation, causes physical and mental defects in both children and adults. Various strategies, especially drug administration for morbidity control, have been implemented to combat the disease in Ghana and globally. Despite these efforts, schistosomiasis remains prevalent in Ghana, negatively impacting children's academic performance, growth, and overall quality of life. This study aimed to determine the prevalence of schistosomiasis in school children at Esuekyir, a peri-urban community in Ghana. A cross-sectional study using simple random sampling technique to select participants and collect stool and urine samples from 246 school children in Esuekyir was adopted. Microscopy of urine and stool samples was performed involving urine sedimentation and stool formol-ether sedimentation techniques to analyse for parasite eggs. Questionnaires were developed to help detect risk factors that expose these children to the disease. The prevalence of urogenital schistosomiasis in children at Esuekyir was 15.45% while that of intestinal schistosomiasis was 6.957.0%. There was one case of co-infection of urogenital and intestinal schistosomiasis from a 13 year old primary student. Children in primary school had higher risks of infection due to their activities around the water body. There was a significant association between class groups and urogenital schistosomiasis (p-value = 0.042). The presence of schistosomiasis in school children highlights the importance of targeted interventions and public health initiatives in addressing this specific disease condition especially in primary school children. Findings from the research revealed a higher prevalence of urogenital schistosomiasis in the study population as compared to intestinal schistosomiasis.
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- 2024
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34. Comprehensive diagnostic model of metastasis in prostate cancer: Individual and combined bioscore model of ADC value, Gleason score, and PSA
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George Asafu Adjaye Frimpong, Evans Aboagye, Osei Owusu‐Afriyie, Kofi Christian Gyasi‐Sarpong, Adwoa Asare, Charles Kwame Adofo, Bernard Delali Akpaloo, Emmanuel Asante, and Ernest Osei‐Bonsu
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African men ,diagnostics marker ,metastasis ,prostate cancer ,tumor ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Prostate cancer (PCa) metastasis significantly influences treatment decisions and prognosis. This study evaluated the individual and combined diagnostic ability of apparent diffusion coefficient (ADC), Gleason score and prostate‐specific antigen (PSA) in detecting metastasis. The study included data from 120 biopsy‐confirmed PCa patients treated from 2019 to 2023. Whole‐body MRI images, incorporating high‐resolution T2 and axial DWI sequences, were evaluated by experienced radiologists. Receiver operating characteristic (ROC) curves and logistic regression models were used to assess the diagnostic performance of ADC, Gleason score, and PSA in detecting metastasis. The prevalence of PCa metastasis was 25.0%, with pelvic lymph node metastasis (16.7%) and bony metastasis (12.5%) being most prevalent. Patients with PCa metastasis had significantly lower ADC values, higher Gleason scores, and higher PSA levels compared to those without metastasis. Individually, an ADC cut‐off of ≤549.00 mm2/s was the best marker for detecting metastasis. The combined bioscore model including PSA, ADC values and Gleason score was the best independent predictor, correlating with a 159‐fold increased likelihood of detecting PCa metastasis. This study demonstrated the prognostic ability of PCa markers in detecting metastasis. ADC was an independent, sensitive, specific, and accurate diagnostic marker. The combined bioscore model of ADC, PSA and Gleason score significantly enhanced the identification of patients with PCa metastasis.
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- 2024
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35. Job Stress and Teacher Burnout in Preschools -- Preliminary Assessment of the Buffer Effect of Job Resources in the Stressor-Strain Model in a Lower-Middle-Income Country
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Michael Osei Aboagye, Collins Opoku Antwi, Kotor Asare, Ntim Seth, Ficus Gyasi, and Frimpong Kwasi
- Abstract
This study examines how asymmetric job conditions deplete the psychological resources of the ECE workforce in a lower-middle-income country (LMIC). Specifically, this preliminary study, using data from preschool teaching staff, examined the influence of (a) job demands (emotional demand, workload, role conflict and work-family conflict) on psychological burnout (emotional exhaustion), and (b) the offsetting effect of occupational resources (social support and job autonomy) in the job demands-emotional exhaustion relations. SEM analyses revealed that high stressors (i.e. job demands) were related with high levels of emotional exhaustion, while social support and job autonomy served as significant buffers in the stressors-emotional exhaustion positive link. These outcomes serve as preliminary evidence for ECE job re-design and burnout management programs by strategically allocating school-level resources in LMICs.
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- 2024
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36. HIPPY Mothers' Family Structure and Process on Their Parenting Efficacy
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Lionel K. Asare
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This study looks at the relationships between family structure (organization and control), family process (cohesion, expressiveness, and conflict) with maternal sense of competency for mothers (n = 138) engaged in a home visiting program. Research questions were answered using multivariate analysis of canonical correlational analysis (CCA) to determine associations between the study variables. Results showed significant relationship between family structure variables of control and organization and maternal self-report of their general efficacy and their task specific efficacy for teaching and nurturing. Results further showed an inverse relationship between process variable of conflict and overall parenting efficacy of mothers. Study provided directions on how family professionals and home visitors can empower mothers to become efficient, thereby fulfilling Family and Consumer Science's (FCS) goal of equipping professionals to develop essential knowledge and skills to build stronger families.
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- 2024
37. Investigating the Effectiveness of Gamification on Supply Chain Operations Knowledge and Practice
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Adegoke Oke, John Serbe Marfo, Thomas Kull, Dale Rogers, Afia Frimpomaa Asare Marfo, Mohammed Hassan Noor, SudHanshu Mishra, Bridget McHenry, and Sharmila Raj
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The use of gamification to enhance learning in education has been well documented. However, little is known about whether gamification can impact supply chain management knowledge and behaviors among healthcare professionals. In this study, we tested the effectiveness of a simulation app (ShipShape) designed and developed to gamify the fundamental concepts of supply chain management. We field tested the effectiveness of the app to impact knowledge gain and supply chain practice by asking healthcare professionals to use the app in their day-to-day operations. We collected longitudinal data spanning the period before and after the introduction of the app. The analysis and results of different types of data collected provide support for the positive impact of the app on both supply chain knowledge and practice among healthcare professionals.
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- 2024
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38. Teacher Attitudes and Perceptions of Inclusive Education: A Case of Ghana
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Jonathan Chitiyo, Gordon Brobbey, and Kwame Bediako Asare
- Abstract
The purpose of this study is to examine the knowledge and perceptions of 145 teachers from three regions in Ghana regarding inclusive education. The results show that the teachers have moderate knowledge of inclusive education practices and processes. Additionally, slight moderate positive relationships were found between participants' level of training in inclusive education and their knowledge of inclusive education. From the findings, we argue for stakeholders in teacher education to, as a matter of necessity, reconsider the curriculum and practicum for preparing special and general educators to focus on inclusive practices to effectively prepare pre-service teachers to succeed in inclusive settings. There is also a school leadership imperative, in view of site-specific challenges and needs, to influence school-based strategies to advance inclusionary practices. Successes of such initiatives could be replicated in other schools to advance inclusive education in Ghana. Implications of the study for teacher professional development and inclusive education practice in pre-tertiary educational institutions are underscored.
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- 2024
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39. Developing Classroom ICT Teaching Techniques, Principles and Practice for Teachers in Rural Ghana without Access to Computers or Internet: A Framework Based on Literature Review
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Yaw Ofosu-Asare
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Purpose: This paper aims to propose a conceptual framework for integrating information and communication technologies (ICT) into teaching practices for educators in rural Ghana lacking computer and internet access. Bridging the rural-urban digital divide is critical for equitable quality education. This research identifies distinct infrastructure, financial, human, and socio-cultural challenges of ICT adoption in underserved Ghanaian schools through an exhaustive literature review. The framework provides tailored strategies to empower teachers to leverage ICT for innovative pedagogy despite limitations. Ultimately, the goal is to offer pragmatic, evidence-based solutions to advance ICT-enabled instruction and digital equity in marginalized settings. Design/methodology/approach: This study utilizes a qualitative literature review methodology to develop a conceptual framework for ICT teaching techniques tailored to the rural Ghanaian context. Published empirical studies, theoretical papers, and reports focused on ICT education in developing countries, particularly sub-Saharan Africa, were systematically reviewed across multidisciplinary databases. Relevant theories and models, like TPACK and SAMR, were analyzed to determine appropriate modifications for the framework design. The proposed strategies emphasize affordable technologies, teacher training, localized content, and culturally relevant pedagogies selected based on evidence from literature to address the unique barriers and needs of the rural setting. Findings: The literature review revealed profound infrastructure, financial, human, and socio-cultural barriers to ICT adoption in rural Ghanaian schools. These include lack of electricity, internet, hardware, and software alongside inadequate teacher training and support. The proposed conceptual framework offers solutions including leveraging low-cost technologies like mobile devices, prioritizing teacher professional development, developing localized digitally-enabled resources, and fostering community participation. Culturally relevant pedagogies are also emphasized. This tailored, evidence-based approach holds promise for enhancing ICT-enabled instruction and bridging digital divides to promote equitable quality education. Further findings will emerge through framework implementation and evaluation. Research limitations/implications: This conceptual framework requires implementation and evaluation to truly determine its impact and effectiveness in the intended rural Ghanaian context. As a literature review, primary data collection was not undertaken. Practical application of the framework in schools can yield direct insights through surveys, interviews, observations, and analysis of key educational outcomes pre and post-implementation. Comparisons with control groups may further illuminate its efficacy. Monitoring and adaptation over time is also essential. Ultimately, this research sets the foundation for praxis-oriented work transforming ICT integration in marginalized communities to advance digital equity and inclusion. Practical implications: This research provides an evidence-based, context-aware framework with pragmatic solutions to enhance ICT-enabled teaching and learning in underserved rural Ghanaian schools. It offers guidance to teachers, administrators, and policymakers on integrating technology despite infrastructure and resource constraints. The emphasis on cost-effective innovations, educator training, localized content, and community participation can inform planning and investments in ICT education. Broader applications include adapting the framework for other developing country contexts facing comparable challenges. Overall, this work promotes digital equity and quality education access, catalyzing social development and aligning with the UN Sustainable Development Goals. Social implications: This research highlights the urgent need to address digital divides exacerbating educational inequalities between rural and urban communities in Ghana. Lack of technology access and utilization in rural schools threatens to widen gaps in skills, capabilities, and opportunities for students. Strategic integration of ICT can promote social inclusion, cultivate digital literacy, and equip youth to participate in the global digital economy, thereby enhancing prospects. More broadly, advancing digital equity and ICT-enabled education empowers marginalized groups, fosters community empowerment, and drives progressive social change. This work underscores that localized, context-appropriate solutions are pivotal for promoting development and social justice. Originality/value: This research fills a crucial gap by proposing a conceptual framework tailored specifically for integrating ICT in teaching practices in rural Ghanaian schools lacking digital access, responding to context-specific barriers and needs. While extensive literature examines ICT education models globally, few studies offer localized strategies for resource-constrained environments. This framework adapts established models based on a systematic literature review, emphasizing affordability, capacity building, and cultural relevance. By synthesizing evidence-based, pragmatic solutions to advance ICT-enabled instruction in marginalized settings, this work provides a valuable foundation for praxis transforming rural education. The localization approach could inform frameworks for other developing regions.
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- 2024
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40. A User-centered Security Evaluation of Copilot
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Asare, Owura, Nagappan, Meiyappan, and Asokan, N.
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Computer Science - Software Engineering ,Computer Science - Cryptography and Security - Abstract
Code generation tools driven by artificial intelligence have recently become more popular due to advancements in deep learning and natural language processing that have increased their capabilities. The proliferation of these tools may be a double-edged sword because while they can increase developer productivity by making it easier to write code, research has shown that they can also generate insecure code. In this paper, we perform a user-centered evaluation GitHub's Copilot to better understand its strengths and weaknesses with respect to code security. We conduct a user study where participants solve programming problems (with and without Copilot assistance) that have potentially vulnerable solutions. The main goal of the user study is to determine how the use of Copilot affects participants' security performance. In our set of participants (n=25), we find that access to Copilot accompanies a more secure solution when tackling harder problems. For the easier problem, we observe no effect of Copilot access on the security of solutions. We also observe no disproportionate impact of Copilot use on particular kinds of vulnerabilities. Our results indicate that there are potential security benefits to using Copilot, but more research is warranted on the effects of the use of code generation tools on technically complex problems with security requirements., Comment: To be published in ICSE 2024 Research Track
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- 2023
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41. Exploring Dynamic Asset Pricing within Bachelier Market Model
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Nyarko, Nancy Asare, Divelgama, Bhathiya, Gnawali, Jagdish, Omotade, Blessing, Rachev, Svetlozar, and Yegon, Peter
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Quantitative Finance - General Finance - Abstract
This paper delves into the dynamics of asset pricing within Bachelier market model, elucidating the representation of risky asset price dynamics and the definition of riskless assets.
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- 2023
42. Bachelier's Market Model for ESG Asset Pricing
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Rachev, Svetlozar, Nyarko, Nancy Asare, Omotade, Blessing, and Yegon, Peter
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Quantitative Finance - Mathematical Finance - Abstract
Environmental, Social, and Governance (ESG) finance is a cornerstone of modern finance and investment, as it changes the classical return-risk view of investment by incorporating an additional dimension of investment performance: the ESG score of the investment. We define the ESG price process and integrate it into an extension of Bachelier's market model in both discrete and continuous time, enabling option pricing valuation.
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- 2023
43. Interstellar photovoltaics.
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Schopp, Nora, Abdikamalov, Ernazar, Mostovyi, Andrii, Parkhomenko, Hryhorii, Solovan, Mykhailo, Asare, Ernest, Bazan, Guillermo, Nguyen, Thuc-Quyen, Smoot, George, and Brus, Viktor
- Abstract
The term Solar Cell is commonly used for Photovoltaics that convert light into electrical energy. However, light can be harvested from various sources not limited to the Sun. This work considers the possibility of harvesting photons from different star types, including our closest neighbor star Proxima Centauri. The theoretical efficiency limits of single junction photovoltaic devices are calculated for different star types at a normalized light intensity corresponding to the AM0 spectrum intensity with AM0 = 1361 W/m2. An optimal bandgap of > 12 eV for the hottest O5V star type leads to 47% Shockley-Queisser photoconversion efficiency (SQ PCE), whereas a narrower optimal bandgap of 0.7 eV leads to 23% SQ PCE for the coldest red dwarf M0, M5.5Ve, and M8V type stars. Organic Photovoltaics (OPVs) are the most lightweight solar technology and have the potential to be employed in weight-restricted space applications, including foreseeable interstellar missions. With that in mind, the Suns G2V spectrum and Proxima Centauris M5.5Ve spectrum are considered in further detail in combination with two extreme bandgap OPV systems: one narrow bandgap system (PM2:COTIC-4F, Eg = 1.14 eV) and one wide bandgap system (PM6:o-IDTBR, Eg = 1.62 eV). Semi-empirically modeled JV-curves reveal that the absorption characteristics of the PM2:COTIC-4F blend match well with both the G2V and the M5.5Ve spectrum, yielding theoretical PCEs of 22.6% and 12.6%, respectively. In contrast, the PM6:o-IDTBR device shows a theoretical PCE of 18.2% under G2V illumination that drops sharply to 0.9% under M5.5Ve illumination.
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- 2023
44. Impact of COVID-19 lockdown measures on mother and child health – the case of Ghana
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Koka, Eric, Narh, Emmanuel, Asante-Poku, Adwoa, Adjei, Daniel Kwame Ampofo, Sebbie, Diana, Siam, Ishaque Mintah, Asare, Prince, McCoy, David, Gadzekpo, Audrey, and Yeboah-Manu, Dorothy
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- 2024
- Full Text
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45. Prevalence of schistosomiasis among school children at Esuekyir community in the Central Region of Ghana
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Opoku-Kwabi, Denzel, Sevor, Belinda, Sarpong, Emmanuel Adu, Sam, Pius Kwasi, Frimpong, Abigail Agyen, Marfo, Porschier Aninagyei, Asare, Michael, Nkrumah, Emmanuella Akumeniwaa, Badu, Bernard Boakye, Anning, Alberta Serwah, and Ghartey-Kwansah, George
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- 2024
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46. The influence of cost of debt, cost of equity and weighted average cost of capital on dividend policy decision: evidence from non-financial companies listed on the Frankfurt Stock Exchange
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Arhinful, Richard, Mensah, Leviticus, Amin, Halkawt Ismail Mohammed, and Obeng, Hayford Asare
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- 2024
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47. Petrography and geomechanical properties of some mine waste rocks from the Tarkwaian Group in Ghana: implications for their use as aggregates in general engineering works
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Sunkari, Emmanuel Daanoba, Mensah, Bismark, and Asare, Edmund Nana
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- 2024
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48. Breaking barriers: noncanonical inflammasome executes blood–brain barrier disruption
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Dichgans, Martin, Neher, Jonas J., and Asare, Yaw
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- 2024
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49. Risk of arboviral transmission and insecticide resistance status of Aedes mosquitoes during a yellow fever outbreak in Ghana
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Owusu-Akyaw, Margaret, Owusu-Asenso, Christopher Mfum, Abdulai, Anisa, Mohammed, Abdul Rahim, Sraku, Isaac Kwame, Boadu, Emmanuel Nana, Aduhene, Evans, Attah, Simon Kwaku, and Afrane, Yaw Asare
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- 2024
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50. Sand mining deteriorates soil fertility and farming livelihoods around Accra, Ghana
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Hemmler, Katharina Salomea, Asare, Kofi Yeboah, Tenkorang, Emmanuel Yamoah, and Buerkert, Andreas
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- 2024
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