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SSRN 2022年

作者： Smith-Gray, Natalie Stone-Weiss, Nicholas Karcher, Sam Evarts, Jonathan Erickson, Jessica Bussey, John McCloy, John S. Material Science and Engineering Program Washington State University PullmanWA United States School of Mechanical & Materials Engineering Washington State University PullmanWA United States

Borosilicate compositions were designed to explore effects of a fixed amount of Cr, as Cr2O3 or Na2CrO4, and the impact of Al2O3, on sulfur solubility by progressively adding elemental S. The series with Al2O3 has a higher SO3 solubility of ~3.5 mol% while the series without Al2O3 has a SO3 solubility of ~2 mol%. Crystalline Cr2O3 formed only when both Al2O3 and sulfur were present. At the highest S addition, a salt phase always forms, identified as Na2(S,Cr)O4 via spectroscopy, diffraction, and thermal analysis. Magnetic resonance identified no change in the B coordination in either series as S is added, suggesting that the Na is scavenged from other locations, such as the Si sites, to charge compensate sulfate, whether in the glass or in the salt. The Cr precursor identity did not affect the observed overall behavior regarding sulfur, but did impact Cr redox as identified with Raman spectroscopy. © 2022, The Authors. All rights reserved.

关键词： Thermoanalysis

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Injectable citrate-based polyurethane-urea as a tug-of-war-inspired bioactive self-expansive and planar-fixing screw augmented bone-tendon healing

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Bioactive materials 2024年第11期41卷 108-126页

作者： Meihan Tao Zhou Fang Yuting Zhu Yan Ju Zhiguo Hou Meimei Fu Zhihui Lu Daozhang Cai Jian Yang Jinshan Guo Department of Orthopedic Surgery Guangdong Provincial Key Laboratory of Bone and Joint Degeneration DiseasesThe Third Affiliated Hospital of Southern Medical UniversityGuangzhou510630PR China Department of Histology and Embryology NMPA Key Laboratory for Safety Evaluation of CosmeticsSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhou510515PR China Regenerative Medicine and Tissue Repair Material Research Center Huangpu Institute of MaterialsGuangzhou New Materials Science CenterChangchun Institute of Applied ChemistryChinese Academy of Sciences88 Yonglong Avenue of Xinlong TownGuangzhou511363PR China Research Center for Industries of the Future Biomedical Engineering ProgramSchool of EngineeringWestlake UniversityHangzhouZhejiang310030PR China CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials Changchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun130022PR China

Inspired by tug-of-war,a game-changing bone-tendon fixation paradigm was ***,injectable citrate-based bioactive self-expansive and planar-fixing screw(iCSP-Scr)consisting of reactive isocyanate(NCO)terminalized citrate-based polyurethane,proanthocyanidin modified hydroxyapatite(HAp)and water(with/without porogen)was developed and administrated in the bone-tendon *** of the“point to point”tendon fixation by traditional interface screws,along with the moisture-induced crosslinking and expansion of iCSP-Scr within the confined space of the irregularly shaped bone-tendon gap,the tendon graft was evenly squeezed into the bone tunnel in a“surface to surface”manner to realize strong and stable bone-tendon fixation via physical expansion,mechanical interlocking and chemical bonding(between–NCO and the–NH2,–SH groups on bone matrix).The optimized iCSP-Scr exhibited rapid crosslinking,moderate expansion rate,high porosity after crosslinking,as well as tunable elasticity and *** iCSP-Scr possessed favorable biodegradability,biocompatibility,and osteoinductivity derived from citrate,PC and HAp,it was able to promote osteogenesis and new bone growth inward of bone tunnel thus further enhanced the bone/iCSP-Scr mechanical interlock,ultimately leading to stronger tendon fixation(pull-out force 106.15±23.15 N)comparing to titanium screws(93.76±17.89 N)after 14 weeks’ACL reconstruction in a rabbit *** iCSP-Scr not only can be used as a self-expansive screw facilitating bone-tendon healing,but also can be expanded into other osteogenic application scenarios.

关键词： Polyurethane Injectable Self-expansive Planar-fixing Citrate

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LoraMap: Harnessing the Power of LoRA Connections

arXiv

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arXiv 2024年

作者： Park, Hyeryun Kwak, Jeongwon Jang, Dongsuk Park, Sumin Choi, Jinwook Interdisciplinary Program for Bioengineering Graduate School Seoul National University Korea Republic of Integrated Major in Innovative Medical Science Graduate School Seoul National University Korea Republic of Department of Biomedical Engineering College of Medicine Seoul National University Korea Republic of Medical Research Center Institute of Medical and Biological Engineering Seoul National University Korea Republic of

Fact-checking techniques can mitigate hallucinations in Large Language Models (LLMs), a prominent issue in specialized domains. As parameter-efficient techniques such as Low-Rank Adaptation (LoRA) can overcome substantial computational overhead, some studies have explored the integration of multiple LoRAs. While previous studies focus on parallel integration, this paper investigates methods to establish connections among multiple LoRAs. We create three reasoning datasets tailored to fact-checking and fine-tune individual LoRAs, allowing them to view and reason from diverse perspectives. Then, we explore strategies for allocating these reasoning LoRAs and introduce LoraMap, an approach to map connections between them. The results of the fact-checking task demonstrate that the performance of LoraMap is superior to LoraHub, an existing method for integrating LoRAs. LoraMap also outperforms with significantly fewer trainable parameters than LoraConcat, which concatenates LoRAs and further fine-tunes them. Copyright © 2024, The Authors. All rights reserved.

关键词： Problem oriented languages

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Correction to: Hip implant performance prediction by acoustic emission techniques: a review (Medical & Biological engineering & Computing, (2020), 58, 8, (1637-1650), 10.1007/s11517-020-02202-z)

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Medical and Biological engineering and Computing 2024年 1-1页

作者： Remya, Ampadi R. Vishwash, B. Lee, Christine Srinivasa Pai, P. Espinoza Orías, Alejandro A. Ozevin, Didem Mathew, Mathew T. Department of Biomedical Science UIC School of Medicine RockfordIL United States Department of Material Science and Civil Engineering University of Illinois ChicagoIL United States Department of Mechanical Engineering NMAM Institute of Technology Karnataka Nitte574110 India Department of Bioengineering University of Illinois ChicagoIL United States Department of Orthopedic Surgery Rush University Medical Center ChicagoIL United States

The original version of this article unfortunately contained a mistake. Author family name reads "Oras" when it should be "Orías". This is now correctly shown above. On the other hand, affilia...

The original version of this article unfortunately contained a mistake. Author family name reads "Oras" when it should be "Orías". This is now correctly shown above. On the other hand, affiliations of all authors were rearranged. From: Ampadi R. Remya 1,2 & B. Vishwash 2,3 & Christine Lee 2,4 & P. Srinivasa Pai 2,3 & Alejandro A. Espinoza Oras 2,5 & Didem Ozevin 2,5 & Mathew T. Mathew 1,2,4,5 To Ampadi R. Remya 1 & B. Vishwash 3 & Christine Lee,4 & P. Srinivasa Pai 3 & Alejandro A. Espinoza Orías 5 & Didem Ozevin 2 & Mathew T. Mathew 1,4,5 The original article has been corrected. © International Federation for Medical and Biological engineering 2024.

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Contribution of ankle motion pattern during landing to reduce the knee-related injury risk

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Computers in Biology and Medicine 2024年 180卷 108965页

作者： Xu, Datao Zhou, Huiyu Wang, Meizi Ma, Xin Gusztav, Fekete Chon, Teo-Ee Fernandez, Justin Baker, Julien S. Gu, Yaodong Faculty of Sports Science Ningbo University Ningbo China Department of Biomedical Engineering Faculty of Engineering Hong Kong Polytechnic University Hong Kong China Department of Orthopedics Huashan Hospital Fudan University Shanghai China Department of Material Science and Technology Audi Hungaria Faculty of Automotive Engineering Széchenyi István University Gyor Hungary School of Chemical and Biomedical Engineering Nanyang Technological University 639798 Singapore Auckland Bioengineering Institute University of Auckland Auckland New Zealand Department of Engineering Science University of Auckland Auckland New Zealand Department of Sport and Physical Education Hong Kong Baptist University Hong Kong China

Background: Single-leg landing (SL) is an essential technique in sports such as basketball, soccer, and volleyball, which is often associated with a high risk of knee-related injury. The ankle motion pattern plays a crucial role in absorbing the load shocks during SL, but the effect on the knee joint is not yet clear. This work aims to explore the effects of different ankle plantarflexion angles during SL on the risk of knee-related injury. Methods: Thirty healthy male subjects were recruited to perform SL biomechanics tests, and one standard subject was selected to develop the finite element model of foot-ankle-knee integration. The joint impact force was used to evaluate the impact loads on the knee at various landing angles. The internal load forces (musculoskeletal modeling) and stress (finite element analysis) around the knee joint were simulated and calculated to evaluate the risk of knee-related injury during SL. To more realistically revert and simulate the anterior cruciate ligament (ACL) injury mechanics, we developed a knee musculoskeletal model that reverts the ACL ligament to a nonlinear short-term viscoelastic mechanical mechanism (strain rate-dependent) generated by the dense connective tissue as a function of strain. Results: As the ankle plantarflexion angle increased during landing, both the peak knee vertical impact force (p = 0.001) and ACL force (p = 0.001) decreased significantly. The maximum von Mises stress of ACL, meniscus, and femoral cartilage decreased as the ankle plantarflexion angle increased. The overall range of variation in ACL stress was small and was mainly distributed in the femoral and tibial attachment regions, as well as in the mid-lateral region. Conclusion: The current findings revealed that the use of larger ankle plantarflexion angles during landing may be an effective solution to reduce knee impact load and the risk of rupture of the medial femoral attachment area in the ACL. The findings of this study have the potential

关键词： Finite element method

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Ultrathin-shell epitaxial Ag@Au core-shell nanowires for high-performance and chemically-stable electronic, optical, and mechanical devices

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Nano Research 2021年第11期14卷 4294-4303页

作者： Yangzhi Zhu Sanggon Kim Xuezhi Ma Peter Byrley Ning Yu Qiushi Liu Xiaoming Sun Da Xu Sangshan Peng Martin C.Hartel Shiming Zhang Vadim Jucaud Mehmet R.Dokmeci Ali Khademhosseini Ruoxue Yan Department of Chemical and Environmental Engineering Bourns College of EngineeringUniversity of California-RiversideRiversideCA92521USA Terasaki Institute for Biomedical Innovation Los AngelesCA90064USA Department of Electrical and Computer Engineering University of California-RiversideRiversideCA92521USA State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082China Department of Bioengineering University of California-Los AngelesLos AngelesCA90095USA Department of Electrical and Electronic Engineering The University of Hong KongHong KongChina Material Science and Engineering Program University of California-RiversideRiversideCA92521USA

Silver nanowires (AgNWs) hold great promise for applications in wearable electronics, flexible solar cells, chemical and biological sensors, photonic/plasmonic circuits, and scanning probe microscopy (SPM) due to their unique plasmonic, mechanical, and electronic properties. However, the lifetime, reliability, and operating conditions of AgNW-based devices are significantly restricted by their poor chemical stability, limiting their commercial potentials. Therefore, it is crucial to create a reliable oxidation barrier on AgNWs that provides long-term chemical stability to various optical, electrical, and mechanical devices while maintaining their high performance. Here we report a room-temperature solution-phase approach to grow an ultra-thin, epitaxial gold coating on AgNWs to effectively shield the Ag surface from environmental oxidation. The Ag@Au core-shell nanowires (Ag@Au NWs) remain stable in air for over six months, under elevated temperature and humidity (80 °C and 100% humidity) for twelve weeks, in physiological buffer solutions for three weeks, and can survive overnight treatment of an oxidative solution (2% H2O2). The Ag@Au core-shell NWs demonstrated comparable performance as pristine AgNWs in various electronic, optical, and mechanical devices, such as transparent mesh electrodes, surface-enhanced Raman spectroscopy (SERS) substrates, plasmonic waveguides, plasmonic nanofocusing probes, and high-aspect-ratio, high-resolution atomic force microscopy (AFM) probes. These Au@Ag core-shell NWs offer a universal solution towards chemically-stable AgNW-based devices without compromising material property or device performance.

关键词： epitaxial growth core-shell nanowire plasmonic waveguides atomic force microscopy(AFM)probe transparent electrode wearable electronics

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Performance Evaluation of Cs3Cu2I5 Perovskite Scintillator Grown by Seedless SEST Method

Performance Evaluation of Cs3Cu2I5 Perovskite Scintillator G...

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IEEE Symposium on Nuclear science (NSS/MIC)

作者： S. Song J. Seo M. Park J.-Y. Yeom Department of Bioengineering Korea University Seoul Republic of Korea Interdisciplinary Program in Precision Public Health Korea University Seoul Republic of Korea Department of Health and Safety Convergence Science Korea University Seoul Republic of Korea School of Biomedical Engineering Korea University Seoul Republic of Korea

ISBN: (数字)9798350388152

ISBN: (纸本)9798350388169

In this study, we utilized the seedless Slow evaporation solution growth technique (SEST) method to grow Cs 3 Cu 2 I 5 , a 0-D perovskite scintillator material, at room temperature. The growth was conducted under conditions of 23°C temperature and 40% humidity for 10 days, resulting in obtaining multiple crystals of 5 mm in size. Using single crystal Cs 3 Cu 2 I 5 detectors grown in our lab, we evaluated its performance using radioactive isotopes ${ }^{137} \mathrm{Cs},{ }^{241} \mathrm{Am},{ }^{54} \mathrm{Mn},{ }^{60} \mathrm{Co},{ }^{22} \mathrm{Na}$, and ${}^{57}\mathrm{Co}$, and acquired energy resolutions of 8.55%, 23.35%, 7.59%, 6.49%, 9.38%, and 16.8%, respectively. In comparison with polycrystalline counterparts, single crystal Cs 3 Cu 2 I 5 exhibited superior performance, although both demonstrated excellent characteristics. By comparison, measurement using GAGG:Ce as a reference scintillator with the same setup showed an energy resolution of 10.00 %.

关键词： Temperature measurement Performance evaluation Semiconductor device measurement Microwave integrated circuits Scintillators Temperature Semiconductor detectors

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Red-Emitting Fluorescent Probe for Hydrogen Sulfide Detection and its Applications in Food Freshness Determination and in Vivo Bioimaging

SSRN

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SSRN 2023年

作者： Shang, Zhuye Meng, Qingtao Tian, Dihua Wang, Yue Zhang, Zexi Zhang, Zhiqiang Zhang, Run School of Chemical Engineering University of Science and Technology Liaoning Liaoning Province Anshan114051 China Key Laboratory for Functional Material Educational Department of Liaoning Province University of Science and Technology Liaoning Liaoning Province Anshan114051 China Australian Institute for Bioengineering and Nanotechnology The University of Queensland BrisbaneQLD4072 Australia

We report the development of a red-emitting fluorescence probe (XDS) for H2S detection in biosystems, real-world food samples, and application of this probe for monitoring of H2S production during food spoilage. The XDS probe is developed by coupling of coumarin derivative to rhodanic-CN through a H2S responsive C=C bond. Remarkable fluorescence quenching of XDS is observed as a result of the response to H2S. Semi-quantitative detection of H2S in three real-world water and two beer samples and monitoring of H2S production during food spoilage in real-time by "naked-eye" and smartphone colorimetric analysis are then achieved using XDS as the probe. Moreover, XDS is low toxicity, allowing it being used for visualizing endogenous and exogenous H2S in vivo in a mouse model. It is expected that the successful development of XDS could provide an effective tool for investigating the roles of H2S in biomedical system and for future food safety evaluation. © 2023, The Authors. All rights reserved.

关键词： Bioimaging

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High thermoelectric and mechanical performance in the n-type polycrystalline SnSe incorporated with multi-walled carbon nanotubes

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Journal of materials science & Technology 2022年第19期114卷 55-61页

作者： Xin-Yu Mao Xiao-Lei Shi Liang-Chuang Zhai Wei-Di Liu Yue-Xing Chen Han Gao Meng Li De-Zhuang Wang Hao Wu Zhuang-Hao Zheng Yi-Feng Wang Qingfeng Liu Zhi-Gang Chen State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Centre for Future Materials University of Southern QueenslandSpringfield CentralBrisbane4300Australia School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4000Australia Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQLD 4072Australia Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Key Laboratory of Material Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China School of Mechanical and Mining Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing Tech UniversityNanjing 211816China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China

In this study,we introduce multi-walled carbon nanotubes(MWCNTs)in Pb/I co-doped n-type polycrys-tal SnSe to simultaneously improve its thermoelectric and mechanical properties for the first *** introduced MWCNTs act as the“bridges”to accelerate the electron carrier transport between SnSe grains,leading to significantly increased electrical conductivity from 32.6 to 45.7 S cm^(−1) at 773 K,which con-tributes to an enhanced power factor of∼5.0μW cm^(−1) K^(−2) at this *** MWCNTs possess high intrinsic thermal conductivities,these MWCNTs,acting as nanoinclusions in the SnSe matrix to form the dense interfaces between SnSe and MWCNTs,provide extra heat-carrying phonon scattering centers,leading to a slightly reduced lattice thermal conductivity of only 0.34 W m^(−1) K^(−2) at 773 K and in turn,a high ZT of∼1.0 at this ***,the introduced MWCNTs can simultane-ously act as the“binders”to bond adjacent grains,significantly improving the mechanical properties of SnSe by boosting its Vickers hardness from 39.5 to *** work indicates that our facile approach can achieve high thermoelectric and mechanical properties in n-type SnSe polycrystals with a considerable potential for applying to thermoelectric devices as n-type elements.

关键词： Thermoelectric property SnSe N-type Multi-walled carbon nanotubes Mechanical property

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Host Response to a Novel Elastomeric Membrane in a Large Animal Model

SSRN

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SSRN 2024年

作者： Knight, Katrina Breedlove, Sophya Obisesan, Temitope Egnot, Morgan Daneshdoost, Niusha King, Gabrielle G. Meyn, Leslie Gall, Ken Moalli, Pamela Department of Bioengineering University of Pittsburgh PittsburghPA United States Magee-Womens Research Institute PittsburghPA United States Departments of Mechanical Engineering Material Science Duke University DurhamNC United States Obstetrics Gynecology and Reproductive Sciences University of Pittsburgh PittsburghPA United States University of Pittsburgh School of Medicine United States

Complications following surgical repairs of pelvic organ prolapse (POP) with polypropylene mesh are common (~10%). Recent mechanistic data attributes complications in part to stiffness mismatches between the vagina and mesh. To address this problem, we developed a novel 3D printed elastomeric membrane (EM) from a softer polymer, polycarbonate urethane (PCU). Given that softer polymers have lower strength than rigid counterparts, EMs were manufactured with more material such that strength properties were similar to polypropylene. We hypothesized that the EMs would be associated with an improved host response as compared to polypropylene mesh despite their markedly increased weight. A secondary goal was to define the material distribution within EMs associated with the most favorable host response. EM constructs (2x1cm2) with varied polymer stiffness, fiber width, and device thickness combinations were implanted onto the vagina of New Zealand white rabbits for 12 weeks. Similarly sized lightweight and midweight polypropylene meshes were implanted for comparison. Sham animals (no device implanted) served as controls. EM constructs were associated with an overall superior host response as evidenced by improved tissue integration, preservation of vaginal smooth muscle morphology, and a significantly reduced macrophage response independent of how the material was distributed across the EM devices. EMs negatively impacted vaginal contractility and glycosaminoglycan content similar to polypropylene constructs but more favorably impacted collagen content. Collectively, the results suggest that softer PCU EMs made with more material are well tolerated by the vagina and that PCU is a possible future base material for POP repair devices. © 2024, The Authors. All rights reserved.

关键词： Stiffness

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