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Novel Design of UWB Jeans Based Textile Antenna for Body-Centric Communications

Computer Systems Science & Engineering 2022年第9期42卷 1079-1093页

作者： Mohammad Monirujjaman Khan bright yeboah-akowuah Kaisarul Islam Eric Tutu Tchao Sumanta Bhattacharyya Rajesh Dey Mehedi Masud Fahad Alraddady Department of Electrical and Computer Engineering North South UniversityDhaka1229Bangladesh Department of Computer Engineering Kwame Nkrumah University of Science and TechnologyKumasiGhana Electronics and Communication Engineering Cambridge Institute of TechnologyRanchiIndia Department of Electronics and Communication Engineering Brainware Group of Institutions-SDETKolkataIndia Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

This research presents an ultra-wideband (UWB) textile antenna designfor body-centric applications. The antenna is printed on a 1 mm thick denim substrate with a 1.7 relative permittivity. The jeans substrate is sandwiched between apartial ground plane and a radiating patch with a Q-shaped slot. The slotted radiating patch is placed above the substrate and measures 27.8 mm × 23.8 mm. In freespace, the antenna covers the ultra-wideband spectrum designated by the FederalCommunication Commission (FCC). Various parameters of the antenna designwere changed for further performance evaluation. Depending on the operating frequency, the antenna's realized gain varied from 2.7 to 5 dB. The antenna achievedhigh radiation efficiency with an omnidirectional radiation pattern. A parametricstudy was performed in research on varying antenna substrates and other components of the antenna. The three outermost layers of the human body are used tomodel a human phantom for on-body simulation. After that, the antenna wasplaced at five different distances from the phantom. The findings demonstrate thatat close distances to the phantom, the antenna's gain and efficiency at lower frequencies are reduced. The antenna's radiation efficiency and gain were muchhigher at higher frequencies for distances greater than 6 mm. Compared to freespace, the antenna's radiation pattern was more omnidirectional, especially athigher frequencies. This antenna is novel, compact and has an ultra wide bandwidth, a maximum of 94.60% radiation efficiency and a 5 dBi gain that will makeit a good candidate for body-centric communications.

关键词： Ultra-wideband body-centric communication on-body textile jeans slotted-patch WBAN

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Recent progress in printing flexible electronics: A review

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Science China(Technological Sciences) 2024年第8期67卷 2363-2386页

作者： BI Sheng GAO BuHan HAN Xu HE ZhengRan METTS Jacob JIANG ChengMing ASARE-yeboah Kyeiwaa Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education School of Mechanical EngineeringDalian University of TechnologyDalian 116024China Center for Materials for Information Technology The University of AlabamaTuscaloosaAL 35487USA Department of Electrical and Computer Engineering Penn State BehrendEriePA 16563USA

Miniaturization and flexibility are becoming the trend in the development of electronic products. These key features are driving new methods in the manufacturing of such products. Printed electronics technology is a novel additive manufacturing technique that uses active inks to print onto a diverse set of substrates, realizing large-area, low-cost, flexible and green manufacturing of electronic products. These advantageous properties make it extremely compatible with flexible electronics fabrication and extend as far as offering revolutionary methods in the production of flexible electronic devices. In this paper, the details of a printing process system are introduced, including the materials that can be employed as inks, common substrates, and the most recently reported printing strategies. An assessment of future setbacks and developments of printed flexible electronics is also presented.

关键词： flexible electronics printing process conductive ink flexible substrate

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Assessment of groundwater quantity, quality, and associated health risk of the Tano river basin, Ghana

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Acta Geochimica 2024年第2期43卷 325-353页

作者： Adwoba Kua-Manza Edjah Bruce Banoeng-Yakubo Anthony Ewusi Enoch Sakyi-yeboah David Saka Clara Turetta Giulio Cozzi David Atta-Peters Larry Pax Chegbeleh Water Resources Research Centre Ghana Atomic Energy CommissionAccraGhana Earth Science Department University of GhanaLegonAccraGhana Geological Engineering Department University of Mines and TechnologyTarkwaGhana Department of Statistics University of GhanaAccraLegonGhana Institute of Polar Sciences National Research Council of ItalyVeniceItaly

In the Tano River Basin,groundwater serves as a crucial resource;however,its quantity and quality with regard to trace elements and microbiological loadings remain poorly understood due to the lack of groundwater logs and limited water *** study presents a comprehensive analysis of the Tano River Basin,focusing on three key ***,it investigated the aquifer hydraulic parameters and the results showed signiﬁcant spatial variations in borehole depths,yields,transmissivity,hydraulic conductivity,and speciﬁc *** boreholes were concentrated in the northeastern and southeastern zones,while geological formations,particu-larly the Apollonian Formation,exhibit a strong inﬂuence on borehole *** study identiﬁed areas with high transmissivity and hydraulic conductivity in the southern and eastern regions,suggesting good groundwater avail-ability and suitability for sustainable water ***-ondly,the research investigated the groundwater quality and observed that the majority of borehole samples fall within WHO(Guidelines for Drinking-water Quality,Environmental Health Criteria,Geneva,2011,***://***)***,some samples have pH levels below the standards,although the groundwater generally qualiﬁes as *** study further explores hydrochemical facies and health risk assessment,highlighting the dominance of Ca–HCO3 water *** element analysis reveals minimal health risks from most elements,with chromium(Cr)as the primary contributor to chronic health ***,this study has provided a key insights into the Tano River Basin’s hydrogeology and associated health *** outcome of this research has contributed to the broader understanding of hydrogeologi-cal dynamics and the importance of managing groundwater resources sustainably in complex geological environments.

关键词： Groundwater Unsupervised machine learning technique Hydrochemistry Aquifer hydraulic parameter Health risk

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Knowledge and Attitudes of Knust Pre-Clinical Dental Students towards Orthodontic Treatment

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Open Journal of Stomatology 2024年第1期14卷 1-13页

作者： Ama Agyeibea Amuasi Ama B. yeboah Daniel K. Sabbah The Department of Child Oral Health and Orthodontics College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana

Background: Orthodontics is a dental specialty focusing on correcting dental irregularities and malocclusion. Knowledge and attitudes towards orthodontic treatment are crucial for promoting oral health and overall well-being. Education and awareness play a vital role in ensuring optimal treatment outcomes and improving quality of life. Aim: This study aims to determine the knowledge and attitudes of Kwame Nkrumah University of Science and Technology (KNUST) pre-clinical dentistry students concerning orthodontic therapy. Methodology: This research is a quantitative descriptive cross-sectional study. The research used a non-random convenience sampling method to form the desired sample. For data collection, an interview-administered questionnaire was used over one month. The study set its sights on pre-clinical dental students in KNUST. A total of 150 questionnaires were printed to meet the sample size. Results: The results of the research showed that the knowledge level of KNUST pre-clinical students on orthodontic treatment and its nuances is quite limited. They however had a fair level of knowledge on the disease or ailment that orthodontic treatments solved (especially malocclusion). Their interest in orthodontic treatments on the other hand was quite significant, with a large number having interest in it. Conclusion: To conclude, KNUST pre-clinical students in Ghana although having a limited level of knowledge on orthodontic treatments have a keen interest in undergoing them regardless of the discomforts or the length of time.

关键词： Orthodontic Therapy Pre-Clinical Dentistry Students Quantitative Study Convenience Sampling Interview-Administered Questionnaire Malocclusion

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Parental Knowledge of Pre-Hospital Management of Avulsed Permanent Tooth in Children at Kath

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Open Journal of Stomatology 2024年第2期14卷 87-102页

作者： Ama Agyeibea Amuasi Samuel K. Addo Solomon Obiri-yeboah Department of Child Oral Health & Orthodontics School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Oral & Maxillofacial Sciences School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana

BACKGROUND: Permanent tooth avulsion is one of the severe forms of dental traumatic injuries. The immediate action taken at the site of the accident is crucial to the prognosis of the tooth. Replantation is considered as the treatment of choice. OBJECTIVE: The study was undertaken to assess the knowledge of parents who accompany their children to the pediatric dental clinic, KATH on the pre-hospital management of avulsed permanent tooth in children. METHODS: A researcher administered structured questionnaire was used to collect data on the knowledge of pre-hospital management of avulsed permanent tooth from 83 parents who accompanied their wards to the pediatric dental clinic at KATH. RESULTS: A total of 83 parents were involved in the study. 30 (36%) were males while 53 (64%) were females. The majority of the parents (57%) were either university trained or had attended college of education. Only 32 parents (39%) were aware of the possibility of replantation. Majority of the parents chose non-physiologic media as the transport media of choice and only 10% would attempt self-replantation before seeking professional help. 76 parents (92%) had no previous education on pre-hospital management of avulsed tooth. CONCLUSION: The results obtained from this study indicate that parental knowledge on pre-hospital management of avulsed permanent tooth is low hence the need for massive public educational campaigns.

关键词： Parental Knowledge Tooth Avulsion Pre-Hospital Management Permanent Tooth

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MIMICS联合Voxar软件引导治疗空洞型肺结核1例

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介入放射学杂志 2024年第9期 966-967页

作者：龚正 Nanafosu yeboah Shamas Amjsd 陈俊三峡大学呼吸病研究所宜昌市中心人民医院呼吸科

1 临床资料患者，女，41岁，咳嗽2个月，确诊肺结核并口服抗结核药物异烟肼、利福平、乙胺丁醇、吡嗪酰胺，2个月后痰及肺泡灌洗液检查示结核杆菌DNA阳性。查体：双肺呼吸音清晰，未闻及干湿性啰音。肺部CT提示左肺下叶背段空洞，较2个... 详细信息

1 临床资料患者，女，41岁，咳嗽2个月，确诊肺结核并口服抗结核药物异烟肼、利福平、乙胺丁醇、吡嗪酰胺，2个月后痰及肺泡灌洗液检查示结核杆菌DNA阳性。查体：双肺呼吸音清晰，未闻及干湿性啰音。肺部CT提示左肺下叶背段空洞，较2个月前相仿。介入手术过程：患者继续口服抗结核药物治疗，气管镜下行结核空洞内异烟肼灌注治疗；医学影像交互式控制系统(MIMICS)软件三维重建提示背段空洞容积为31.3 mL,医学可视化系统Voxar软件虚拟导航提示为左肺背段C支内侧分支(第5级支气管);给予虚拟导航支气管镜引导,0.3g异烟肼加入5mL利多卡因及15mL0.9%氯化钠溶液(总液体20 mL),导管灌入左肺背段C支外侧分支,术中患者诉轻微背痛及胸闷,无其他不适及并发症。

关键词： MIMICS软件 Voxar软件空洞型肺结核

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Genetic diversity and occult hepatitis B infection in Africa: A comprehensive review

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World Journal of Hepatology 2024年第5期16卷 843-859页

作者： Michee M Bazie Mahamoudou Sanou Florencia Wendkuuni Djigma Tegwinde Rebeca Compaore Dorcas Obiri-yeboah Benoît Kabamba Bolni Marius Nagalo Jacques Simpore Rasmata Ouédraogo Department of Medicine Transmissible Diseases LaboratoryUniversitéJoseph KI-ZERBOOuagadougou 0000Burkina Faso Department of Biochemistry and Microbiology Molecular Biology and Genetics LaboratoryUniversity Joseph KI-ZERBOOuagadougou 0000Burkina Faso Infectious and parasitic disease Laboratory Health Sciences Research InstituteIRSS/CNRSTNational Center for Scientific and Technological ResearchOuagadougou 0000Burkina Faso Department of Microbiology and Immunology School of Medical SciencesUniversity of Cape CoastPMBCape Coast 0000Ghana Department of Clinical Biology Virology LaboratoryCliniques Universitaires Saint LucUniversitéCatholique de LouvainBruxelles 0000Belgium Division of Hematology and Oncology Mayo ClinicAZ 0000United States

BACKGROUND Occult hepatitis B infection(OBI)is a globally prevalent infection,with its frequency being influenced by the prevalence of hepatitis B virus(HBV)infection in a particular geographic region,including *** can be transmitted th-rough blood transfusions and organ transplants and has been linked to the development of hepatocellular carcinoma(HCC).The associated HBV genotype influences the *** To highlight the genetic diversity and prevalence of OBI in *** This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and involved a comprehensive search on PubMed,Google Scholar,Science Direct,and African Journals Online for published studies on the prevalence and genetic diversity of OBI in *** The synthesis included 83 articles,revealing that the prevalence of OBI varied between countries and population groups,with the highest prevalence being 90.9%in patients with hepatitis C virus infection and 38%in blood donors,indicating an increased risk of HBV transmission through blood *** of OBI reactivation have been reported following *** D is the predominant,followed by genotypes A and *** This review highlights the prevalence of OBI in Africa,which varies across countries and population *** study also demonstrates that genotype D is the most prevalent.

关键词： Occult hepatitis B infection Blood transfusion Genetic diversity

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Injuries Associated with Auto-Tricycle Crashes in an African City: Incidence and Pattern

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Open Journal of Orthopedics 2024年第5期14卷 229-246页

作者： Augustus Nii Kwame Okleme David Anyitey-Kokor Dominic Konadu-yeboah Adam Gyedu Kwabena Agbedinu Johathan Boakye Department of Orthopaedics and Trauma Komfo Anokye Teaching Hospital Kumasi Ghana School of Medical Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Surgery Komfo Anokye Teaching Hospital Kumasi Ghana Department of Emergency Medicine Komfo Anokye Teaching Hospital Kumasi Ghana

Purpose: The aim of this study was to determine the incidence and pattern of injuries resulting from auto-tricycle crashes among patients in a tertiary referral centre in Ghana. Methods: Data were retrospectively extracted from hospital records of patients who got involved in auto-tricycle crashes and presented to the Accident and Emergency Centre of the Komfo Anokye Teaching Hospital (KATH), over a one-year period using a structured questionnaire. The gathered data were then entered into an electronic database and then analysed with SPSS version 20.0. Results: The incidence of injury following auto-tricycle crashes over the one-year period was 5.9% (95% CI: 4.9% - 7.0%) with a case fatality rate (FR) of 3.8% (95% CI: 1.3% - 8.7%). All the mortalities resulted from head and neck injuries and none of the patients involved wore a crash helmet. Only 5% of those studied wore crash helmets and were all drivers. Closed fractures accounted for 58% of the injuries, followed by open fractures, 28%. The most commonly fractured bones were the tibia/fibula, followed by the femur and then radius/ulna. The most common mechanism of injury was auto-tricycle toppling over (29%). Passengers were the most injured (48%), followed by drivers (37%) and pedestrians (15%). Most (72%) injuries among participants involved a single body part. On the injury severity scale, most (61%) of patients had minor trauma and 38% had major trauma. Conclusion: Auto-tricycle crashes account for 5.9% of injuries at the study site with a case fatality rate of 3.8%. Passengers had a higher injury rate (48%) than drivers (37%). Fractures of the tibia/fibula were most commonly associated with auto-tricycle crashes. Injuries to the head and neck were responsible for the deaths in the study participants and non-use of a crash helmet was associated with mortalities.

关键词： Auto-Tricycle Knock-Down Rickshaw Road Traffic Crashes

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Functional Outcomes of Adult Tibia Shaft Fractures Treated with Solid Intramedullary Nails versus Hollow Nails: A Systematic Review

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Open Journal of Orthopedics 2024年第3期14卷 149-172页

作者： Kwadwo Aning Abu Bernard Hammond Mohammed Issah Suglo Bukari Kizito Kakra Vormawor Ronald Awoonor-Williams David Anyitey-Kokor Paa Kwesi Baidoo Dominic Konadu-yeboah Department of Orthopaedics St. John of God Hospital Duayaw Nkwanta Ghana Directorate of Trauma and Orthopaedics Komfo Anokye Teaching Hospital Kumasi Ghana Department of Surgery Tamale Teaching Hospital Tamale Ghana Department of Orthopadics and Trauma Seventh Day Adventist Hospital Asamang Ghana

Introduction: The management of fractures of the tibia shaft is an important aspect of orthopaedic care, and the selection of the surgical method for fixation can substantially impact patient outcomes. The current review aims to compare the outcomes of adult tibia fractures treated with solid nails to those treated with hollow nails. Methods: A search on Scopus, PubMed, and Cochrane Library, using three keywords (Outcome, Tibia shaft fractures, Nail) was conducted in April 2023. Results were compiled and two independent reviewers screened and selected eligible articles After removing duplicates, titles and abstracts were read to exclude ineligible studies. Full-text articles of the remaining papers were read to select eligible studies which were further critically appraised to ascertain their methodological quality. The data extracted from the selected papers were synthesized using a combination of pooling of results, tests of statistical difference (t-test and chi-square) and narrative synthesis methods. Results: A total of 2295 articles were obtained from the databases and citation searching. A total of 9 papers were identified as eligible and included in the review. Findings revealed that there is no statistical difference in the outcomes of tibia fractures treated with either solid or hollow nail groups such as duration of surgery (p = 0.541), rate of delayed and non-union (p = 0.342), and rate of surgical site infections (p = 0.395). Conclusion: Intramedullary nailing of tibia shaft fractures with either solid or hollow nails have similar functional outcomes.

关键词： Tibia Shaft Fractures Functional Outcome SIGN Nail Hollow Nail

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Sustainability Assessment of Smallholder Farms in the Savannah Transition Agro-Ecological Zone of Ghana

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Agricultural Sciences 2021年第11期12卷 1185-1214页

作者： Johnny Kofi Awoonor Edward yeboah bright Fafali Dogbey Fowzia Adiyah Soil Genesis Survey and Classification Division CSIR-Soil Research Institute Kumasi Ghana Soil Microbiology Division CSIR-Soil Research Institute Kumasi Ghana Department of Soil Resources Management CSIR College of Science and Technology Accra Ghana Department of Soil Science Szent István University G&#246 dö llő Hungary

The ever-increasing human population has resulted in political pressure to increase crop production. Currently, smallholder farmers are expected to be environmentally considerate, adapt to extreme climatic conditions and deal with financial instability. Despite these recent developments, farmers and their farming activities in these rural environs of developing countries need to improve household food and income security on a sustainable basis. A minimum data set selected from extensive data was used to determine indicators for soil sustainability assessment. This method involved expert opinion and statistical data reduction techniques. The results indicated that SOC, MBC, BS, EC, Spo and sand were the most important variables selected as MDS using PC analysis. Forest and Grassland had a high sustainability index (SI) while Savannah woodland, Fallow and Cropland were rated not sustainable (NS). For Cumulative rating using the total dataset (CR-TDS), Forest had a high sustainability index (HS), Savannah woodland and Grassland were sustainable (S) compared to Fallow and Cropland, which were sustainable with high input (SWHI). Also, for cumulative rating using the minimum dataset (CR-MDS), Forest, Savannah woodland and Grassland had high sustainability (SH) indices compared to Fallow and Cropland, which were considered sustainable with high input (SWHI). Sustainability index (SI) and Cumulative rating (CR) using the total dataset (CR-TDS) had a strong correlation (R2 = 0.91, p 2 = 0.44, p 2 = 0.60, p < 0.05). These methods consider that these management goals dictate soil functions affecting the selection of indicators. Using PCA and variance analysis, silt, clay, EC, SOC, MBC and CEC relating to soil texture and fertility were identified as the most influential (sensitive) indicators for soil sustainability assessment. The selected soil attributes can serve as ta

关键词： Sustainability Land Use Principal Component Analysis Sustainability Index Smallholder Farms

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