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Effect of Processing and Cultivar on Thermo-Chemical Properties of Australian-Grown Hemp Hurd (Cannab.s sativa L.)

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Journal of Renewab.e Materials 2024年第8期12卷 1475-1493页

作者： Fehrmann J. b.lleville b. Ozarska b. Ismayati M. Dwianto W. School of Agriculture Food and Ecosystem Sciences (SAFES) Faculty of Science The University of Melbourne Melbourne 3121 Australia Research Center for b.omass and b.oproducts National Research and Innovation Agency (BRIN) Jakarta 16911 Indonesia

This study explored the thermo-chemical properties of industrial hemp hurd with different provenances, maturity stages, and retting protocols. The findings were then compared to hemp hurd used in the fab.ication of citric acid-b.nded ultra-low-density hemp hurd particleb.ard. Pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA) were employed to document the variab.lity of the hurd and comprehend the potential impact on b.ob.sed composite applications. The choice of cultivar, maturity stage, and processing modality significantly influenced the chemical composition, presence of functional groups, and thermal stab.lity of the hurd. Py-GC/MS revealed sub.tantial variations in the lignin-to-carb.hydrate (L/C) ratio, along with the ab.ence of fatty acids in certain cultivars. While FTIR signals confirmed consistent functional groups, differences in peak intensities were indicative of carb.hydrate variations associated with maturity and retting duration, impacting the availab.lity of hydroxyl groups for, i.e., interparticle b.nding in citric acid-b.sed b.o-composites. Furthermore, it was ob.erved that shorter retting durations initially enhanced the thermal resistance, b.t prolonged retting led to accelerated degradation, significantly reducing the hurd’s residual mass. The findings indicated notab.e differences among the samples, emphasizing the importance of investigating variab.es such as provenance/cultivar, maturity,andprocessing modality. This assessment is essential to ensure effective agronomic practices that align the raw material characteristics with the specific requirements of intended applications, such as the fab.ication of b.ob.sed hemp hurd composites. © 2024 The Authors.

关键词： chemical analysis Hemp hurd material characterization thermal analysis

Nearest Neighb.r Sampling of Point Sets Using Rays

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1131-1174页

作者： Liangchen Liu Louis Ly Colin b.Macdonald richard Tsai Department of Mathematics The University of Texas at Austin2515 SpeedwayAustinTX 78712USA Oden Institute for Computational Engineering and Sciences The University of Texas at Austin201 E24th StAustinTX 78712USA Department of Mathematics University of British Columbia1984 Mathematics RdVancouverBCV6T1Z2Canada

We propose a new framework for the sampling,compression,and analysis of distrib.tions of point sets and other geometric ob.ects emb.dded in Euclidean *** approach involves constructing a tensor called the RaySense sketch,which captures nearest neighb.rs from the underlying geometry of points along a set of *** explore various operations that can b. performed on the RaySense sketch,leading to different properties and potential *** information ab.ut the data set can b. extracted from the sketch,independent of the ray *** integrals on point sets can b. efficiently computed using the *** also present several examples illustrating applications of the proposed strategy in practical scenarios.

关键词： Point clouds Sampling Classification Registration Deep learning Voronoi cell analysis

Operations management for competitive advantage / richard b. chase. F. Rob.rt Jacob. Nicholas J. Aquilano.

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Parameter-Free Shifted Laplacian Reconstruction for Multiple Kernel Clustering

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作者： chase.richard b.

来源：畅想之星图书光盘版（南... 评论

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 1072-1074页

作者： Xi Wu Zhenwen Ren F.richard Yu the School of National Defence Science and Technology Southwest University of Science and TechnologyMianyang 621010China the School of National Defence Science and Technology Southwest University of Science and TechnologyMianyang 621010 the Guangxi Key Lab.ratory of Machine Vision and Intelligent Control Wuzhou UniversityWuzhou 543002 the Guangdong Lab.ratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518060China

Dear Editor,This letter proposes a parameter-free multiple kernel clustering(MKC)method b. using shifted Laplacian *** MKC can effectively cluster nonlinear data,b.t it faces two main challenges:1)As an unsupervised method,it is up against parameter prob.ems which makes the parameters intractab.e to tune and is unfeasib.e in real-life applications;2)Only considers the clustering information,b.t ignores the interference of noise within Laplacian.

关键词： parameter letter Parameter

Schisanhenol ameliorates non-alcoholic fatty liver disease via inhib.ting miR-802 activation of AMPK-mediated modulation of hepatic lipid metab.lism

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Acta Pharmaceutica Sinica b 2024年第9期14卷 3949-3963页

作者： Li b. Xiao Q. Zhao H. Zhang J. Yang C. Zou Y. Zhang b. Liu J. Sun H. Liu H. State Key Lab.ratory of b.oactive Sub.tance and Function of Natural Medicines Institute of Medicinal Plant Development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100193 China Institute of b.sic Medical Sciences Chinese Academy of Medical Sciences Department of Pathophysiology Peking Union Medical College Beijing 100005 China

Non-alcoholic fatty liver disease (NAFLD), characterized b. hepatic steatosis, is a common metab.lic liver disease worldwide. Currently, satisfactory drugs for NAFLD treatment remain lacking. Ob.sity and diab.tes are the leading causes of NAFLD, and compounds with anti-ob.sity and anti-diab.tic activities are considered suitab.e candidates for treating NAFLD. In this study, b.ochemical and histological assays revealed that a natural lignan schisanhenol (SAL) effectively decreased lipid accumulation and improved hepatic steatosis in free fatty acid (FFA)-treated HepG2 cells and high-fat diet (HFD)-induced NAFLD mice. Further, molecular analyses, microRNA (miRNA)-seq, and b.oinformatics analyses revealed that SAL may improve NAFLD b. targeting the miR-802/adenosine monophosphate-activated protein kinase (AMPK) pathway. Liver-specific overexpression of miR-802 in NAFLD mice significantly impaired SAL-mediated liver protection and decreased the protein levels of phosphorylated (p)-AMPK and PRKAb.. Dual-luciferase assay analysis further confirmed that miR-802 inhib.ts hepatic AMPK expression b. b.nding to the 3' untranslated region of mouse Prkab. or human PRKAA1. Additionally, genetic silencing of PRKAA1 b.ocked SAL-induced AMPK pathway activation in FFA-treated HepG2 cells. The results demonstrate that SAL is an effective drug candidate for treating NAFLD through regulating miR-802/AMPK-mediated lipid metab.lism. © 2024 The Authors

关键词： AMPK Hepatic steatosis Lipid metab.lism miR-802 Non-alcoholic fatty liver disease PPARα Schisanhenol SREb.-1c

Comparative utility of vestib.lar function tests in patients with peripheral and central vestib.lar dysfunction

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Journal of Otology 2024年第1期19卷 5-9页

作者： Cameron b.Fattahi Christopher Zaro Janice J.Chung richard F.Lewis Divya A.Chari Department of Otolaryngology-Head and Neck Surgery UMASS Memorial Medical CenterUniversity of Massachusetts Chan Medical SchoolWorcesterMAUSA Jenks Vestib.lar Physiology Lab.ratory Massachusetts Eye and EarBostonMAUSA Department of Otolaryngology-Head and Neck Surgery Massachusetts Eye and EarHarvard Medical SchoolBostonMAUSA Department of Neurology Harvard Medical SchoolBostonMAUSA

b.ckground: b.thermal caloric irrigation, video head impulse test(vHIT), and rotational testing are commonly used to assess peripheral vestib.lar function, b.t the relative clinical utility of each test in differentiating patients with peripheral vestib.lopathy is ***: To determine whether(1) the comb.nation of two or more vestib.lar tests enhances diagnostic utility over a single test;(2) ab.ormal test results on vestib.lar tests correlate with one ***: Retrospective analysis of data collected from multidisciplinary vestib.lar clinics at two academic medical centers from 2016 to ***: 150 patients(54.10 ± 15.09 years, 88 females) were included. No individual test was significantly b.tter at predicting the presence of peripheral vestib.lar damage(p > 0.05). vHIT test results improved significantly when comb.ned with either the caloric test(p = 0.007) or rotary chair test(p = 0.039). Caloric and rotational testing had high sensitivity(74.65% and 76.06%, respectively) and specificity(83.54% and 78.48%, respectively). vHIT demonstrated excellent specificity(89.87%) b.t poor sensitivity(47.89%). Caloric, vHIT, and rotary chair tests results did not correlate with one another(p > 0.05).Conclusions: Vestib.lar function tests have comparab.e diagnostic utility, yet each offers unique advantages. Caloric and rotational testing may b. b.st suited for screening peripheral damage and vHIT may function ideally as a confirmatory test.

关键词： vestib.lar patients specificity

Solving the Three-Neutrino Prob.em as One of the Three-b.dy Prob.ems in Physics

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Journal of High Energy Physics, Gravitation and Cosmology 2024年第1期10卷 197-227页

作者： Zoran b. Todorovic Faculty of Electrical Engineering Department of Physics University of Belgrade Belgrade Serbia

b. using the standard PMNS (Pontecorvo-Maki-Nakagawa-Sakata) mixing matrix and applying the rule for the sum of the oscillation prob.b.lities of three neutrinos, the equations of motion were derived in which the Dirac CP violating phase appeared as an unknown quantity. The equations of motion were separately derived for each of the three possib.e transitions for flavor-neutrino oscillations. Two roots of those equations were ob.ained in the form of two formulas for the Dirac CP violating phase with opposite signs. In the mathematical sense, the connection b.tween those formulas was estab.ished in order to maintain the continuous process of oscillation of three neutrinos. This made it possib.e to calculate the numerical value for the Dirac CP violating phase, the Jarlskog invariant and to write the general form of the PMNS mixing matrix in the final form in which all its elements are defined with explicit numerical values.

关键词： Ordinary Neutrino PMNS Matrix Dirac CPV Phase Jarlskog Invariant