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Graph-based structural joint pose estimation in non-line-of-sight conditions

Earthquake Engineering and Engineering Vibration 2023年第2期22卷 371-386页

作者： alexander Thoms zaid al-sabbag Sriram Narasimhan Department of Mechanical and Aerospace Engineering University of California-Los AngelesUSA Department of Civil and Environmental Engineering University of WaterlooCanada Department of Civil and Environmental Engineering University of California-Los AngelesUSA

In post-earthquake surveys,it is difficult(and often infeasible)to observe and quantify displacements beyond line-of-sight(LOS),given seismic force-resisting and gravity systems exist completely or partially within a building′s *** overcome this limitation,we develop a novel framework that generalizes graph-based state estimation towards structural joint localization via engineered *** landmarks provide an indirect means to estimate residual displacements where direct LOS is *** our framework,engineered landmarks define topologies of uniquely identifiable landmarks that are either visible or non-visible to a robot performing simultaneous localization and mapping(SLAM).Within the SLAM approach,factors encoding robot odometry and robot-to-visible landmark measurements are formulated for the cases of wireless sensing and fiducial object detection and *** landmarks are rigidly attached to non-visible landmark subsets for each engineered landmark,where the complete set of non-visible landmarks form globally rigid and localizable connectivity graphs via range-based *** subsets of non-visible landmarks are embedded within the base structure and uniquely define joint pose via geometric *** factors are unified within a common graph to solve for the maximum a posteriori estimate of robot,landmark,and joint states via nonlinear least squares *** demonstrate the applicability of our approach,we apply the Monte Carlo method over a parameterization of system noise to calculate residual joint pose error distributions,maximum average inter-story drift ratios,and related summary statistics for a 19-story nonlinear structural *** performing nonlinear time history analyses over sets of service-level and maximum considered earthquakes,our parametric study gives insight into our method′s application towards post-earthquake building evaluation in non-LOS conditions.

关键词： state estimation engineered landmarks post-earthquake residual displacement

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Status and prospects for symmetric organic redox flow batteries

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Journal of Energy Chemistry 2025年第1期100卷 125-143页

作者： Md al Raihan C.Adam Dyker Department of Chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

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Effects of P301L-TAU on post-translational modifications of microtubules in human iPSC-derived cortical neurons and TAU transgenic mice

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Neural Regeneration Research 2025年第8期20卷 2348-2360页

作者： Mohamed Aghyad al Kabbani Christoph Köhler Hans Zempel Institute of Human Genetics Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany Center for Molecular Medicine Cologne(CMMC) University of CologneCologneGermany Center Anatomy Department ⅡMedical FacultyUniversity of CologneCologneGermany

TAU is a microtubule-associated protein that promotes microtubule assembly and stability in the *** is missorted and aggregated in an array of diseases known as *** are essential for neuronal function and regulated via a complex set of post-translational modifications,changes of which affect microtubule stability and dynamics,microtubule interaction with other proteins and cellular structures,and mediate recruitment of microtubule-severing *** impairment of microtubule dynamics causes neuronal dysfunction,we hypothesize cognitive impairment in human disease to be impacted by impairment of microtubule *** therefore aimed to study the effects of a disease-causing mutation of TAU(P301L)on the levels and localization of microtubule post-translational modifications indicative of microtubule stability and dynamics,to assess whether P301L-TAU causes stability-changing modifications to *** investigate TAU localization,phosphorylation,and effects on tubulin post-translational modifications,we expressed wild-type or P301L-TAU in human MAPT-KO induced pluripotent stem cell-derived neurons(i Neurons)and studied TAU in neurons in the hippocampus of mice transgenic for human P301L-TAU(p R5 mice).Human neurons expressing the longest TAU isoform(2N4R)with the P301L mutation showed increased TAU phosphorylation at the AT8,but not the p-Ser-262 epitope,and increased polyglutamylation and acetylation of microtubules compared with endogenous TAU-expressing neurons.P301L-TAU showed pronounced somatodendritic presence,but also successful axonal enrichment and a similar axodendritic distribution comparable to exogenously expressed 2N4R-wildtype-TAU.P301L-TAU-expressing hippocampal neurons in transgenic mice showed prominent missorting and tauopathy-typical AT8-phosphorylation of TAU and increased polyglutamylation,but reduced acetylation,of microtubules compared with non-transgenic *** sum,P301L-TAU results in changes in micr

关键词： human induced pluripotent stem cell microtubules P301L pR5 mice TAU tauopathy tubulin code

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Recapture probability, flight morphology, and microorganisms

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Current Zoology 2018年第3期64卷 277-283页

作者： zaid al RUBAIEE Haider al-MURAYATI Anders Pape MФLLER Ecologie Systematique Evolution Universite Paris-Sud CNRS AgroParisTech Universite Paris-Saclay F-91405 Orsay Cedex France

Microorganisms on and within organisms are ubiquitous and interactions with their hosts range from mutualistic over commensal, to pathogenic. We hypothesized that microorganisms might affect the ability of barn swallows Hirundo rustica to escape from potential predators, with positive associations between the abundance of microorganisms and escape ability implying mutualistic effects, while negative associations would imply antagonistic effects. We quantified escape behavior as the ability to avoid capture in a mist net and hence as a small number of recaptures. Because recapture probability may also depend on timing of reproduction and reproductive success, we also tested whether the association between recapture and microorganisms was mediated by an association between recapture and life history. We found intermediate to strong positive relationships between recapture probability and abundance of Bacillus megaterium, but not abundance of other bacteria or fungi. The abundance of B. megaterium was associated with an advance in laying date and an increase in reproductive success. However, these effects were independent of the number of recaptures. This interpretation is supported by the fact that there was no direct correlation between laying date and reproductive success on one hand and the number of recaptures on the other. These findings have implications not only for predator-prey interactions, but also for capture-mark-recapture analyses of vital rates such as survival and dispersal.

关键词： bacteria barn swallow capture-mark-recapture analyses fungi Hirundo rustica microbiome.

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Nanosecond pulse and dual-wavelength Q-switched 1.5 μm fiber laser using MAX phase Cr2TialC2 saturable absorber

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Optoelectronics Letters 2025年第1期21卷 7-12页

作者： Ahmed Shakir al-HITI Hiba HASSAN Department of Electrical Engineering Faculty of Engineering University of Anbar Department of Laser and Optoelectronics Engineering University of Technology-Iraq

We demonstrated a new type of MAX phase material, chromium titanium aluminum carbide（Cr2TialC2） polymer film, to generate a passively Q-switched erbium-doped fiber laser（EDFL）. The film thickness was measured to be around 45 μm, which was fabricated using the embedding method with polyvinyl alcohol（PVA） polymer as hoster. The saturable absorber（SA） film demonstrates a dual-wavelength passively Q-switched EDFL which operates at 1 531 nm and 1 560.19 nm, respectively. The Q-switching pulse duration could be varied from 2.46 μs to 770 ns, while the repetition rate varied from 92.76 kHz to 106.6 kHz with an increasing input pumping range from 154 mW to 300 mW. The maximum output power and pulse energy of 15.05 mW and 141.18 nJ were obtained at the maximum input power of 300 mW, respectively.

关键词： Saturable absorbers

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Iterative algorithm for parabolic and hyperbolic PDEs with nonlocal boundary conditions

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Journal of Ocean Engineering and Science 2018年第4期3卷 316-324页

作者： N.A.al-zaid H.O.Bakodah Department of Mathematics King Abdulaziz UniversityJeddahSaudi Arabia

In this paper,we are concerned with the numerical solutions for the parabolic and hyperbolic partial differential equations with nonlocal boundary ***,we presented a new iterative algorithm based on the Restarted Adomian Decomposition Method(RADM)for solving the two equations of different types involving dissimilar boundary and nonlocal *** algorithm presented transforms the given nonlocal initial boundary value problem to a local Dirichlet one and then employs the RADM for the numerical *** comparisons were made between our proposed method and the Adomian Decomposition Method(ADM)to demonstrate the efficiency and performance of the proposed method.

关键词： Adomian Decomposition Method Restarted method Parabolic and hyperbolic PDEs Nonlocal boundary conditions.

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Not so black,not so white:differences in microorganism load of contiguous feathers from white stork chicks

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Current Zoology 2021年第3期67卷 263-270页

作者： zaid al Rubaiee Haider al Murayati Marcin Tobolka Piotr Tryjanowski Anders Pape MФller Department of Biology College of ScienceMustansiriya UniversityBaghdadIraq Institute of Zoology Poznan University of Life SciencesPoznanPL-60-625Poland Ecologie Systematique Evolution Universite Paris-SudCNRSAgroParisTechUniversite Paris-SaclayOrsay CedexF-91405France College of Life Sciences Beijing Normal UniversityBeijing100875China

Many organisms are characterized by strikingly contrasting black and white coloration,but the function of such contrasts has been inadequately *** this article,we tested the function of black and white contrasting plumage in white stork Ciconia ciconia *** found greater abundance and diversity of microorganisms on black compared with adjacent white *** addition,nest size was positively correlated with the abundance and diversity of microorganisms on white *** initiation distance(FID),defined as the distance at which adult white storks took flight when approached by a human,was negatively correlated with most measurements of microorganism *** success was generally positively correlated with the abundance and diversity of microorganisms on black *** feather growth rate was positively correlated with some and negatively correlated with other measurements of microbial abundance and ***,chick growth was negatively correlated with the number of microbial species on black feathers and positively with the abundance and diversity of microorganisms on white *** findings are consistent not only with the role of microorganisms in the maintenance of a benign microbial environment which differs between black and white feathers,but also with the hypothesis that several taxa of microorganisms found in black and white plumage are virulent,with negative effects on the fitness of their hosts.

关键词： accumulation of microorganisms Ciconia ciconia fungi microbiome

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Hepatic inflammatory pseudotumor presenting in an 8-year-old boy: A case report and review of literature

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World Journal of Gastroenterology 2015年第28期21卷 8730-8738页

作者： Hussa al-Hussaini Haya Azouz Ahmed Abu-zaid Department of Pathology and Laboratory Medicine King Faisal Specialist Hospital and Research Centre College of Medicine Alfaisal University

Hepatic inflammatory pseudotumors are uncommon benign *** diagnosing hepatic inflammatory pseudotumor can be very challenging because the clinical presentation and radiological appearances are nonspecific and cannot be certainly distinguished from malignant neoplastic ***,we present a case of hepatic IPT in an 8-yearold boy who presented to clinic with a 3-mo history of a tender hepatic mass,fever of unknown origin,and9-kg weight *** physical examination was notable for tender *** investigations were notable for a normal hepatic profile and elevated erythrocyte sedimentation rate and C-reactive protein.A T2-attenuated magnetic resonance imaging scan of the abdomen showed a 4.7 cm x 4.7 cm x 6.6cm,contrast-enhancing,hyper-intense,well-defined lesion involving the right hepatic *** view of the unremitting symptoms,tender hepatomegaly,thrombosed right hepatic vein,nonspecific radiological findings,and high suspicion of a deep-seated underlying infection or malignancy,a right hepatic lobectomy was ***,the hepatic lesion exhibited a mixture of inflammatory cells(histiocytes,plasma cells,mature lymphocytes,and occasional multinucleated giant cells) in a background of dense fibrous ***,the cells stained negative for SMA,alK-1,CD-21 and CD-23,diffusely positive for CD-68,and focally positive for *** final histopathological diagnosis was consistent with hepatic *** the postoperative 4-mo follow-up,the patient was asymptomatic without radiological evidence of recurrence.

关键词： Inflammatory pseudotumor Inflammatorymyofibroblastic tumor Hepatic Liver

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Comparative chemical sensor for detection of chromium(Ⅵ) in aqueous solution

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Optoelectronics Letters 2025年第1期21卷 21-27页

作者： Sura H.al-REKABI A.A.alWAHIB Electrical Technique Department Al Suwayrah Technical Institute Middle Technical University Laser and Optoelectronics Department University of Technology-Iraq

A process for purifying aqueous solutions containing heavy and toxic metals such as chromium（Cr） has been investigated. One of the extremely harmful pollutants in rivers and seawater is the heavy metal ions due to their direct impacts on human, animals and plants are hexavalent Cr（Ⅵ）. Consequently, highly sensitive sensor to detect Cr is essential. Surface plasmon resonance（SPR） technique has attracted huge research interest in detecting heavy metals specifically. In this study, three types of prism-based SPR sensor, gold（Au）/silver（Ag）, Au/polyaniline（PANI） and Au/titanium dioxide（TiO2） nanostructured films, are investigated as potential sensing material to detect the presence of Cr（Ⅵ） ions in water. The base Au layer with thickness of 48.3 nm is deposited on a glass slide for all sensors. For Au/Ag, Au/PANI nanofibers and Au/TiO2sensor films, the Cr（Ⅵ） concentration is varied from 1 ppm to 15 ppm with sensitivity of 0.270 °ppm-1, 0.082 °ppm-1and 0.039 °ppm-1, respectively. Based on these results, the Au/PANI nanofibers are the most sensitive to Cr（Ⅵ） among the tested sensing materials.

关键词： Titanium dioxide

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Determination of the antioxidant activity based on the content changes in fatty acid methyl esters in vegetable oils

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Journal of Chinese Pharmaceutical Sciences 2014年第12期23卷 873-877页

作者： Housam Haj Hamdo zaid al-Assaf Warid Khayata Department of Analytical and Food Chemistry Faculty of Pharmacy Aleppo University Department of Analytical and Food Chemistry Faculty of Pharmacy Damascu University

Free radicals, which are generated in several biochemical reactions in the body, have been implicated as mediators of many diseases, including cancer, atherosclerosis and heart diseases. although the endogenous antioxidants can scavenge these free radicals, they are often insufficient to maintain the in vivo redox balance. The antioxidant activity(AOA) was examined by addition of each tested antioxidants [alpha-tocopherol(α-T), beta-tocopherol(β-T), gamma-tocopherol(γ-T), delta-tocopherol(δ-T), butylated hydroxyanisole(BHA), 2,6-di-tert-butyl-4-methylphenol(BHT), and ascorbyle palmitate(AP)] to four types of different vegetable oils(sunflower oil, soybean oil, corn oil and olive oil). Moreover, content changes in fatty acids were then investigated every 3 months during the storage period. The results showed that the AOA was different among the tested antioxidants. The AOA for BHA was the most for different types of oil compared with other antioxidants, whereas the δ-T possessed the lowest AOA.

关键词： Antioxidant Activity Vegetable oil FAMEs Tocopherol

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