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Evaluating the Structural Integrity of Fibreglass for the Manufacture of Headgears

Modern Mechanical Engineering 2021年第2期11卷 13-26页

作者： Olusegun A. Adefuye Nurudeen A. Raji Rafiu O. Kuku timothy oyetade Ridwan O. Ola-Gbadamosi Mechanical Engineering Department Lagos State University Lagos Nigeria

A composite material is made up of two phases, the matrix, and the reinforcing materials. The reinforcing material is embedded over matrix material. The reinforcing material works to make the matrix material harder. A fibreglass reinforced composite was developed using E-glass fibre reinforcement and epoxy resin matrix. The composites were produced using the hand lay-up technique with varying fibre percentage of 9%, 13% and 25% by weight percentage of fibreglass mat at orientations of 0°, 15°, 45°, and 90° chosen at random. A 13% by weight percentage of chopped mat was also developed for purpose of comparison. The fabricated composites were subjected to tensile test, flexural test, impact test, punch shear test and hardness test to ascertain the appropriate fibre contents and orientation that is optimum for the manufacture of headgears. Analysis of Variance was carried out to determine level of significance and percentage contribution of the parameters. The results show that both fibre orientation and percentage of fibre content reinforcement of have significant influence on the strength and fracture energy of the composite .The fibre orientation has a higher impact on the strength of the composite (79.74%) while the percentage of fibre reinforcement has a lesser impact on the tensile strength of the composite (20.26%). However,

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Kinetics of glyphosate and aminomethylphosphonic acid sorption onto montmorillonite clays in soil and their translocation to genetically modified corn

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Journal of Environmental Sciences 2024年第1期135卷 669-680页

作者： Meichen Wang Kelly J Rivenbark timothy D Phillips Veterinary Physiology and Pharmacology College of Veterinary Medicine and Biomedical SciencesTexas A&M UniversityTX 77845USA

The co-occurrence of glyphosate(GLP)and aminomethylphosphonic acid(AMPA)in contaminated water,soil,sediment and plants is a cause for concern due to potential threats to the ecosystem and human health.A major route of exposure is through contact with contaminated soil and consumption of crops containing GLP and AMPA ***,clay-based sorption strategies for mixtures of GLP and AMPA in soil,plants and garden produce have been very *** this study,in vitro soil and in vivo genetically modified corn models were used to establish the proof of concept that the inclusion of clay sorbents in contaminated soils will reduce the bioavailability of GLP and AMPA in soils and their adverse effects on plant *** of chemical concentration(1–10 mg/kg),sorbent dose(0.5%-3%in soil and 0.5%-1%in plants)and duration(up to 28 days)on sorption kinetics were *** time course results showed a continuous GLP degradation to *** inclusion of calcium montmorillonite(CM)and acid processed montmorillonite(APM)clays at all doses significantly and consistently reduced the bioavailability of both chemicals from soils to plant roots and leaves in a dose-and time-dependent manner without detectable *** treated with 0.5%and 1%APM inclusion showed the highest growth rate(p≤0.05)and lowest chemical bioavailability with up to 76%reduction in roots and57%reduction in *** indicated that montmorillonite clays could be added as soil supplements to reduce hazardous mixtures of GLP and AMPA in soils and plants.

关键词： Glyphosate AMPA Adsorption Soil remediation Plant Hydroponic system

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Comprehensive review of hepatocellular carcinoma with portal vein tumor thrombus:State of art and future perspectives

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Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 221-227页

作者： Paschalis Gavriilidis timothy M Pawlik Daniel Azoulay Department of Surgery Colchester General HospitalTurner RoadColchester CO45JLUK Department of Surgery The Ohio State Wexner Medical CenterJames Comprehensive Cancer CenterColumbusOHUSA Department of Hepato-Biliary and Liver Transplantation surgery Paul Brousse University HospitalParis-Saclay UniversityVillejuif 94800France

Background:Despite advances in the diagnosis of patients with hepatocellular carcinoma(HCC),70%-80%of patients are diagnosed with advanced stage *** vein tumor thrombus(PVTT)is among the most ominous signs of advanced stage disease and has been associated with poor survival if *** sources:A systematic search of MEDLINE(PubMed),Embase,Cochrane Library and Database for Systematic Reviews(CDSR),Google Scholar,and National Institute for Health and Clinical Excellence(NICE)databases until December 2022 was conducted using free text and MeSH terms:hepatocellular carcinoma,portal vein tumor thrombus,portal vein thrombosis,vascular invasion,liver and/or hepatic resection,liver transplantation,and systematic ***:Centers of surgical excellence have reported promising results related to the individualized surgical management of portal thrombus versus arterial chemoembolization or systemic *** elements to the individualized surgical management of HCC and portal thrombus include precise classification of the portal vein tumor thrombus,accurate identification of the subgroups of patients who may benefit from resection,as well as meticulous surgical *** review addressed five specific areas:(a)formation of PVTT;(b)classifications of PVTT;(c)controversies related to clinical guidelines;(d)surgical treatments versus non-surgical approaches;and(e)characterization of surgical techniques correlated with classifications of ***:Current evidence from Chinese and Japanese high-volume centers demonstrated that patients with HCC and associated PVTT can be managed with surgical resection with acceptable results.

关键词： Hepatectomy Liver surgery Liver neoplasms Portal vein tumor thrombus

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Mitochondrial recruitment in myelin:an anchor for myelin dynamics and plasticity?

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Neural Regeneration Research 2024年第7期19卷 1401-1402页

作者： Jean-David M.Gothié timothy E.Kennedy Department of Neurology and Neurosurgery Montreal Neurological InstituteMcGill UniversityMontrealQCCanada

Optimal propagation of neuronal electrical impulses depends on the insulation of axons by myelin,produced in the central nervous system by *** is an extension of the oligodendrocyte plasma membrane,which wraps around an axon to form a compact multi-layered *** is composed of a substantially higher proportion of lipids compared to other biological membranes and enriched in a small number of specialized proteins.

关键词： plasticity insulation dynamics

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Laser-based bionic manufacturing

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International Journal of Extreme Manufacturing 2024年第4期6卷 62-84页

作者： Xingran Li Baoyu Zhang timothy Jakobi Zhenglei Yu Luquan Ren Zhihui Zhang Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchunPeople's Republic of China Institute of Structured and Architected Materials Liaoning Academy of MaterialsShenyangPeople's Republic of China The University of New South Wales CanberraNorthcott DrCampbellACT 2612Australia

Over millions of years of natural evolution,organisms have developed nearly perfect structures and *** self-fabrication of organisms serves as a valuable source of inspiration for designing the next-generation of structural materials,and is driving the future paradigm shift of modern materials science and ***,the complex structures and multifunctional integrated optimization of organisms far exceed the capability of artificial design and fabrication technology,and new manufacturing methods are urgently needed to achieve efficient reproduction of biological *** one of the most valuable advanced manufacturing technologies of the 21st century,laser processing technology provides an efficient solution to the critical challenges of bionic *** review outlines the processing principles,manufacturing strategies,potential applications,challenges,and future development outlook of laser processing in bionic manufacturing *** primary manufacturing strategies for laser-based bionic manufacturing are elucidated:subtractive manufacturing,equivalent manufacturing,and additive *** progress and trends in bionic subtractive manufacturing applied to micro/nano structural surfaces,bionic equivalent manufacturing for surface strengthening,and bionic additive manufacturing aiming to achieve bionic spatial structures,are ***,the key problems faced by laser-based bionic manufacturing,its limitations,and the development trends of its existing technologies are discussed.

关键词： bionic manufacturing laser processing bionic micro/nano structural surface bionic strengthening surface bionic spatial structure

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Inflammatory indicators such as systemic immune inflammation index(SIII),systemic inflammatory response index(SIRI),neutrophil-to-lymphocyte ratio(NLR)and platelet-to-lymphocyte ratio(PLR)as prognostic factors of curative hepatic resections for hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2024年第3期13卷 509-511页

作者： Paschalis Gavriilidis timothy M.Pawlik Department of Surgery Colchester General HospitalColchesterUK Department of Surgery The Ohio State University Wexner Medical CenterJames Comprehensive Cancer CenterColumbusOHUSA

As the fifth most common gastrointestinal cancer worldwide,hepatocellular carcinoma(HCC)often presents at advanced stages of *** the subset of patients who present with tumor and liver-related features amenable to surgery,hepatic resection—in addition to transplantation—offers the best chance at curative-intent *** can be associated,however,with risk of complications and perioperative death especially among individuals with concomitant portal hypertension,liver fibrosis,cirrhosis,and portal vein thrombosis(1-3).Post-resection liver failure is also a major concern and can be a devasting complication following hepatic resection(4,5).Overall survival following hepatic resection of HCC ranges from only 30–50%,and recurrence can be common depending on the stage of *** turn,there is considerable interest in identifying markers to help stratify patients relative to risk of recurrence and prognosis to define which groups of patients may benefit the most from hepatic resection of HCC(1-5).

关键词： Hepatocellular carcinoma(HCC) systemic immune inflammation index(SIII) systemic inflammatory index neutrophil-to-lymphocyte ratio(NLR) platelet-to-lymphocyte ratio(PLR)

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Partitioning Anatolian Kinematics into Tectonic Escape and Slab Rollback Dominated Domains

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Journal of Earth Science 2024年第3期35卷 758-768页

作者： Jiannan Meng timothy M.Kusky Erdin Bozkurt Hao Deng Ozan Sinoplu State Key Laboratory of Geological Processes and Mineral Resources Center for Global TectonicsSchool of Earth SciencesChina University of GeosciencesWuhan 430074China Badong National Observatory and Research Station for Geohazards China University of GeosciencesWuhan 430074China Department of Geological Engineering Middle East Technical University06800 AnkaraTurkey Department of Geosciences Auburn UniversityAuburn AL 36849USA

Anatolia is the global archetype of tectonic escape,as witnessed by the devastating 2023 Kahramanmaraş Earthquake sequence,and the 2020 Samos Earthquake,which show different kinematics related to the framework of the escape *** Positioning System(GPS)motions of the wedge-shaped plate differ regionally from northwestwards to southwestwards(from east to west).Anatolia was extruded westward from the Arabian-Eurasian collision along the North and East Anatolian fault systems,rotating counterclockwise into the oceanic free-faces of the Mediterranean and Aegean,with dramatic extension of western Anatolia in traditional ***,which is the dominant mechanism for this change in kinematics,extrusion related to the Arabia/Eurasia collision or rollback of the African slab beneath western Anatolia is still *** assess the dominant driving mechanisms across Anatolia,we analyze recent GPS velocity datasets,and decomposed them into N-S and E-W components,revealing that westward motion is essentially constant across the whole plate and consistent with the slip rates of the North and East Anatolia fault zones,while southward components increase dramatically in the transition area between central and western Anatolia,where a slab tear is *** phenomenon is related to different tectonic driving *** ArabiaEurasia collision drives the Anatolian Plate uniformly westwards while western Anatolia is progressively more affected by the southward retreating African subducting slab west of the Aegean/Cypriot slab tear,which significantly increases the southward component of the velocity field and causes the apparent curve of the whole modern velocity *** 2020 and 2023 earthquake focal mechanisms also confirm that the northward colliding Arabian Plate forced Anatolia to the west,and the retreating African slab is pulling the upper plate of western Anatolian apart in *** propose that the Anatolian Plate is moving westwards as

关键词： tectonics neotectonics tectonic escape slab rollback Anatolian Plate GPS velocity field geodynamics.

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Liver transplantation for colorectal liver metastasis:the exception,not the rule

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Hepatobiliary Surgery and Nutrition 2024年第5期13卷 857-860页

作者： Diamantis I.Tsilimigras Anargyros Bakopoulos timothy M.Pawlik1 timothy M.Pawlik Department of Surgery Division of Surgical OncologyThe Ohio State UniversityWexner Medical Center and James Comprehensive Cancer CenterColumbusOHUSA Department of Surgery Laiko University HospitalNational and Kapodistrian University of AthensAthensGreece Department of Surgery Attikon University HospitalNational and Kapodistrian University of AthensAthensGreece

Approximately half of individuals diagnosed with colorectal cancer(CRC)will develop colorectal liver metastasis(CRLM)during the course of their disease(1,2).Liver resection is the only potentially curative treatment for patients with CRLM,yet less than 20%of individuals are candidates for resection due to the extent or location of liver disease,underlying liver function and/or presence of extrahepatic metastases(1,2).In addition,the oncologic benefit of liver resection for CRLM is limited by recurrence rates than can be as high as 70%(3).Liver transplantation(LT)for CRLM was initially proposed as an alternative treatment strategy in the early 1990s but was abandoned due to the initial poor outcomes(3,4).The concept of transplantation for CRLM was later revisited in the 2000s by a group in Oslo,Norway that reported promising results in the SECA-I pilot study(5).Since the completion of the SECA-I study,the Norwegian group has also published other promising data from the SECA-II study(6).In addition,other notable outcomes have been reported in the RAPID study(7),as well as another study from specialized centers in North America(8),both of which have revitalized the concept of LT for CRLM.

关键词： Liver transplantation(LT) colorectal cancer(CRC) liver metastasis colorectal liver metastasis(CRLM)

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Digital twin‐based multi‐objective autonomous vehicle navigation approach as applied in infrastructure construction

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IET Cyber-Systems and Robotics 2024年第2期6卷 1-19页

作者： Tingjun Lei timothy Sellers Chaomin Luo Lei Cao Zhuming Bi Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Department of Electrical and Computer Engineering University of MississippiUniversityMississippiUSA Department of Civil and Mechanical Engineering Purdue University Fort WayneFort WayneIndianaUSA

The widespread adoption of autonomous vehicles has generated considerable interest in their autonomous operation,with path planning emerging as a critical ***,existing road infrastructure confronts challenges due to prolonged use and insufficient *** research on autonomous vehicle navigation has focused on determining the trajectory with the shortest distance,while neglecting road construction information,leading to potential time and energy inefficiencies in real-world scenarios involving infrastructure *** address this issue,a digital twin-embedded multi-objective autonomous vehicle navigation is proposed under the condition of infrastructure *** authors propose an image processing algorithm that leverages captured images of the road construction environment to enable road extrac-tion and modelling of the autonomous vehicle ***,a wavelet neural network is developed to predict real-time traffic flow,considering its inherent ***,a multi-objective brainstorm optimisation(BSO)-based method for path planning is introduced,which optimises total time-cost and energy consumption objective *** ensure optimal trajectory planning during infrastructure con-struction,the algorithm incorporates a real-time updated digital twin throughout autonomous vehicle *** effectiveness and robustness of the proposed model are validated through simulation and comparative studies conducted in diverse scenarios involving road *** results highlight the improved performance and reli-ability of the autonomous vehicle system when equipped with the authors’approach,demonstrating its potential for enhancing efficiency and minimising disruptions caused by road infrastructure development.

关键词： autonomous vehicle intelligent robots motion planning navigation path planning robot planning

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The burden and psychosocial impact on immediate caregivers of patients with spinal cord injury in a tertiary health facility,Edo State,Nigeria

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Journal of Integrative Nursing 2024年第2期6卷 103-110页

作者： timothy Aghoghko EHWARIEME Uzezi JOSIAH Auwuli EMINA Department of Nursing Science School of Basic Medical SciencesUniversity of BeninBenin CityEdo StateNigeria Department of Nursing Science Delta State University AbrakaDelta StateNigeria Department of Nursing Science Faculty of Basic Medical and Health SciencesBenson Idahosa UniversityBenin CityEdo StateNigeria

Objective:This study aimed to assess the burden and psychosocial impact of spinal cord injury on the immediate caregivers at a tertiary health facility in Benin City,Edo *** and Methods:A descriptive cross-sectional survey design was adopted among 73 family caregivers in the neurological ward of a tertiary health facility using a structured questionnaire as instrument of data *** collected were analyzed using descriptive statistics and multiple logistic ***:Findings revealed that an overall mean of 2.73 indicates that the burden on the caregivers was moderate with a moderate psychological impact(m=2.88)and a high sociological impact(m=3.12).Factors affecting the caregiving provided by immediate caregivers include social and household responsibilities(94.5%),financial situation(89.0%),family support(83.6%),and health status of the caregiver(80.8%).Age(odds ratio[OR]=5.67,95%confidence interval[CI]:1.23-27.17,P=0.027),education(OR=3.75,95%CI:1.05-13.39,P=0.041),and“others”(spouses,siblings,friends,or extended family members)(OR=3.167,95%CI:1.583-6.337,P=0.001)were predictors for high psychological impact while education(OR=0.074;95%CI:0.015-0.370,P=0.001)and caregiving role(OR=3.167;95%CI:0.1.583-6.337,P=0.001)high sociological ***:Majority of the caregivers experience moderate burden,moderate psychological impact,and high sociological *** these factors is essential for developing targeted interventions and support services to address the unique needs of caregivers and mitigate the burden of caregiving on their psychosocial health.

关键词： Burden caregivers predictors of psychosocial impact psychological impact sociological impact spinal cord injury

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