Digital Commons Network^™

前言, Gang Xu

嶺南學報 Lingnan Journal of Chinese Studies

本期是“早期中國的經典與語言”專輯。作爲本期的執行主編，我在此簡要交代一下此輯的編輯經過，並試着對所收的論文作一點粗淺的介紹，也許會方便讀者根據自己的興趣決定是否需要閲讀相關的論文。

《莊子》寓言故事主體的擬人名和動物名研究, Xiaowei Su

嶺南學報 Lingnan Journal of Chinese Studies

《莊子》寓言含義與現代寓言含義並非完全一致，在他的“泛寓言”體系下，自創的擬人名、精心選擇或獨創的動物名是其思想講述中的兩種故事主體名字類型。通過這種命名方式，莊子使抽象思想具體化，讓讀者以擬人名或動物名爲媒介，拓寬了審美想像的空間，引發情與理的契合，使讀者體驗到字面意義之外的思想含義。在這個過程中，莊子隱藏自身存在位置，讓不同擬人名和動物名類主體獲得獨立和自由，且部分主體具備主體間性，還讓擬人名和動物名的含義規範着寓言叙述結構；同時從文體發展來看，這種命名方式也對漢賦主體命名及構思有重要的影響。

The allegory meaning of “Zhuangzi” is not completely consistent with the meaning of modern allegories. Under the system of his broad-allegory, self-made anthropomorphic names, carefully chosen or original animal names are the two main name types in his thoughts. Through this method of naming, Zhuangzi concretized abstract thoughts, allowing readers to use anthropomorphic names or animal names as media, which broadened the space for aesthetic imagination, triggered the match between emotion and reason, and enabled readers to experience ideological meaning beyond the literal meaning. In this process, Zhuangzi hid his own existence position, allowed the subjects of different anthropomorphic …

《五經文字》引石經輯考 : 兼論漢魏石經在唐代的接受, Yongxin Gu

嶺南學報 Lingnan Journal of Chinese Studies

漢魏石經至隋唐時期已十不存一，但拓本傳承有緒，藏於祕府，“相承以爲七經正字”。唐代祕書省校書郎和正字專司“正定文字”，其中大篆和八分即源出石經（古文當亦如是），國子監書學博士的專業亦有“石經三體”。作爲正字運動的重要成果之一，大曆中張參所編《五經文字》直接援引漢石經（間及魏石經隸書）作爲字頭和部首字形的重要來源之一，後在開成中與九經三傳一道雕鐫上石。這樣，唐石經之中反映了漢魏石經文字形體的部分信息。本文悉數輯出《五經文字》明確稱引石經字頭和部首字形，並略取漢魏石經殘字可與其相對應者比較互證。本文所輯石經字形可以在一定程度上擴充已知漢魏石經的數量，豐富有關漢字隸楷演變細節的認知，對於石經和文字學研究也都有一定的積極意義。

The Stone Classics (石經) of Han (漢) and Wei (魏) survived little into Sui (隋) and Tang (唐), but the rubbings were preserved and handed down in good orders as an important reference to collating the content of the Classics (經). Editors of Palace Library (祕書省校書郎) and Proofreaders (正字) in Tang were specially responsible for collating the characters, among which the big-seal (大篆) and Bafen (八分) characters originated from the Stone Classics (so was Guwen 古文). Some Erudite of Calligraphy School (書學博士) in the Directorate of Education (國子監) also majored in the three styles of the Stone Classics (石經三體). …

陳鱣《禮記參訂》稿鈔本八種考述, Bingbing Zhao, Yucai Liu

嶺南學報 Lingnan Journal of Chinese Studies

清代乾嘉學者陳鱣，向以藏書家著名。其人實則精究鄭、許之學，著書頗富，惟因遺稿多佚而聲名不彰於學術史。本文旨在調查陳鱣所著《禮記參訂》一書之版本，考察今日所見八種稿鈔本之流傳情形，並梳理其版本譜系，以便日後整理是書。與此同時，借兹個案，可以窺探古人著述流傳之不易，並見鈔本文化至近世藏書家仍未衰歇也。

The purpose of this paper is to investigate the editions of Liji CanDing (《禮記參訂》) written by Chen Zhan (陳鱣), a scholar in Qing Dynasty. Firstly, we found eight copies of the book through the investigation. Secondly, we find out the writing and circulation of these editions according to the literature records. Finally, we sort out the relationship between these editions through edition collation.

從史實論六朝標準音與商周雅言, Gang Xu

嶺南學報 Lingnan Journal of Chinese Studies

六朝學者的標準音觀念，本質上是以當時的權威方言音系，來規範讀書音。顔之推之所以將標準音定爲金陵音與洛下音兩個，是因爲這兩個權威方言的差别本來就不大，可以認爲是同一個音系。雖然有權威方言存在，但是現實生活中實際的“通語”，是參雜各種方音成分的漢語變體。“洛生詠”也并非標準的洛陽讀書音，而是吟誦的音調。商周時期的雅言的狀況與此相似。周人克商，有意識地進行了政治、宗教等意識形態領域的變革。《詩經》的雅是西周朝廷的雅樂，二南是各國諸侯的雅樂。從雅樂與政治意識形態的變革，語音與樂律水土的關係的角度，可以推斷西周初年雅言的標準音經歷了從殷商的政治中心安陽淇縣一帶向洛陽地區過渡的過程，從此奠定了洛陽方言長期作爲漢語權威方言的格局。

The real meaning of “standard pronunciation” appeared in the middle ages is to standardize the pronunciation of the literacy language by choosing out an authority dialect. The reason that YAN Zhitui choose two dialects, the Jin Ling dialect and the Luo Yang dialect, as the standard phonologies, is that the two phonologies are almost the same, so that they can be deemed as one phonology. Although there exists the received authority dialect, the real “standard pronunciation” at that time is a kind of “complex pronunciation” mixed with the speakers’ native dialects. The famous word “Luo Sheng Yong” does not …

漢藏語言研究對漢語研究的啓示 : 音類、音值及演化生態, Feng Wang

嶺南學報 Lingnan Journal of Chinese Studies

本文基於筆者對漢藏語言（尤其是白語）的研究，對漢語的研究提供一些參考意見。漢藏語言的譜系結構是大的研究背景，無論是漢藏比較還是漢語研究，都需要考慮將所探討的問題建立在更可靠的前提假設之下，同源抑或借用的判斷都應有切實的證據。語言中的音類，尤其是原始語言中的音類，應根據語音對應（如：漢語去聲和入聲在白語中對應）；音值方面的擬測可根據語音學的進展而更新完善，比如，現在對聲調的理解已經遠不限於基頻的變化了（如：白語中的發聲類型）；語言隨着言者的變化而變化，而言者在不同情形下的交際狀况就構成了演化生態，可以從大的生態角度出發，來理解一些複雜的變異（如：白語中的否定）。白語是漢語的姐妹語言，白語研究中的這些方面或許能拓寬漢語研究的視野。

Based on previous studies on Sino-Tibetan languages (mostly, the Bai language) by the author, this paper tends to provide some cues for studies on Chinese. The genetic structure of Sino-Tibetan languages offers the general background. Either Sino-Tibetan comparison or Chinese studies, may need a sustainable hypothesis. Either cognates or loanwords should be clearly identified with substantial evidence. Phonological categories, especially those of protolanguages, should be derived from sound correspondences, such as, the correspondences in the Bai language to Chinese departure tone and entering tone. The reconstruction of phonetic value may update with the advance of modern phonetics. For instance, …

齊一變至於魯，魯一變至於道 : 論顧、江、段的古韻研究, Tong Zhao

嶺南學報 Lingnan Journal of Chinese Studies

顧炎武離析《唐韻》，建立了第一個科學意義上的古韻系統，但是由於没有擺脱韻緩説的影響，他所分的十部還不是嚴格意義上的韻部。江永徹底摒棄韻緩説，明確了韻部的概念，是古音學之一變。但是由於未能脱離今音的局限，江永的分部也未能至善。段玉裁突破今音的束縛，是古音學之又一巨變。

With the method of dividing part of rhymes of Tangyun (唐韻), Gu Yanwu (顧炎武) established the first scientific system of Old Chinese rhyme group. However, because he did not get rid of the influence of the theory of near-rhyme (韻緩説), his ten groups are not proper rhyme groups. Jiang Yong (江永) abandoned the theory of near-rhyme and clarified the definition of rhyme group, which was a development of the study on Old Chinese phonology. However, due to the limitation of Mandarin pronunciation, Jiang’s division of rhyme groups is not perfective. Duan Yucai (段玉裁) broke the boundaries of Mandarin pronunciation, …

從《尚書》古寫本看《尚書》文本的演變 : 兼談今古文《尚書》文字判定的標準, Jianping Xu

嶺南學報 Lingnan Journal of Chinese Studies

《尚書》有伏生一系所傳《今文尚書》，有孔安國所傳壁中《古文尚書》，有晚出隸古定《尚書》，因爲《今文尚書》與壁中《古文尚書》均已失傳，晚出隸古定《尚書》經唐朝衛包改字，所存最早全文爲《唐石經》。故清代學者考定《今文尚書》與壁中《古文尚書》之文字，皆以《唐石經》的《古文尚書》中被認爲是真書的３３篇作爲基礎材料。但《唐石經》已被衛包改爲今字，而且距隸古定《尚書》面世已達五百多年，其間輾轉傳抄，應有不少有意改動與無意致誤者。文章通過七例敦煌與日本古寫本的異文，對前賢所論漢代今古文《尚書》文字的結論及其文字的判定標準提出疑問，認爲在判定漢代今古文《尚書》文字時應該充分利用早期寫本文獻，並從文本演變的角度思考《尚書》文字判定的標準問題。

There are 3 versions of Shangshu (尚書) , including Jinwen Shangshu (今文尚書) inherited from Fu Sheng (伏生), Guwen Shangshu (古文尚書) excavated in the wall of Confucius’ old house and read by Kong An-guo, and the “liguding (隸古定)” edition which is also known as Faked Guwen Shangshu (僞古文尚書). While the first two didn’t come down, the last one was withal transformed to a kaishu (楷書) version by Wei Bao (衛包) in Tang Dynasty, which was written in Tangshijing (唐石經), the earliest intact edition of Shangshu that we can watch today. The scholars of Qing Dynasty researched the characters of Jinwen …

Non-Local Corrections To The Typical Medium Theory Of Anderson Localization, H. Terletska, A. Moilanen, K. M. Tam, Y. Zhang, Y. Wang, M. Eisenbach, N. S. Vidhyadhiraja, L. Chioncel, J. Moreno

Faculty Publications

We use the recently developed finite cluster typical medium approach to study the Anderson localization transition in three dimensions. Applying our method to the box and binary alloy disorder distributions, we find a fast convergence with the cluster size. We demonstrate the importance of the typical medium environment and the non-local spatial correlations for the proper characterization of the localization transition. As the cluster size increases, our typical medium cluster method recovers the correct critical disorder strength for the transition. Our findings highlight the importance of the non-local cluster corrections for capturing the localization behavior of the mobility edge trajectories. …

Current State Of The Imaging Physics Workforce And Financial Model, David W. Jordan, Wayne D. Newhauser, Michael D. Mills

Faculty Publications

No abstract provided.

A Gravitational-Wave Measurement Of The Hubble Constant Following The Second Observing Run Of Advanced Ligo And Virgo (Vol 908, 218, 2021), B. P. Abbott, R. Abbott, T. D. Abbott

Faculty Publications

No abstract provided.

Multi-Scale Feedback And Feeding In The Closest Radio Galaxy Centaurus A, B. Mckinley, S. J. Tingay, M. Gaspari, R. P. Kraft, C. Matherne, A. R. Offringa, M. Mcdonald, M. S. Calzadilla, S Veilleux, S. S. Shabala, S. D. J. Gwyn, J. Bland-Hawthorn, D. Crnojevic, B. M. Gaensler, M. Johnston-Hollitt

Faculty Publications

Supermassive black holes and supernova explosions at the centres of active galaxies power cycles of outflowing and inflowing gas that affect galactic evolution and the overall structure of the Universe(1,2). While simulations and observations show that this must be the case, the range of physical scales (over ten orders of magnitude) and paucity of available tracers make both the simulation and observation of these effects difficult(3,4). By serendipity, there lies an active galaxy, Centaurus A (NGC 5128)(5,6), at such a close proximity as to allow its observation over this entire range of scales and across the entire electromagnetic spectrum. In …

Bridge Load Posting Prediction, Sabarethinam Kameshwar, Md. Manik Mia, Sai Bandaru

Data

There are approximately 13,000 bridges in Louisiana facilitating movement of people, goods, and services. At present, about 12% of the bridges are load posted, i.e., they are deemed to lack the strength to safely carry all legal loads. With time bridges will age and deteriorate; at the same time, legal loads might increase. Load posted bridges disrupt the movement of goods and commerce. Therefore, objective of this research was to estimate the number of load posted bridges in Louisiana over the next 50 years. For this purpose, herein, a data based approach was used. For a given bridge type, the …

Catalyst Regeneration Of Rap-Binder In Asphalt, D. Spivak, Subramanian Balamurugan

Data

Reclaimed Asphalt Pavement (RAP) binders are difficult to reuse because they often contain associated/aggregated molecules with very high molecular weights. This is due to the polarity gained during oxidative aging, causing the aggregation to occur. These high molecular weight components are responsible for RAP binder’s increased viscosity and certain deteriorated rheological properties. One strategy to reuse RAP binder is to mix it with virgin asphalt binder and use this partially recycled mixture in asphalt. The RAP binder is usually improved before mixing by the addition of rejuvenators, softening agents, softer binders, and antioxidants to the asphalt binder mix to rebalance …

Catalyst Regeneration Of Rap-Binder In Asphalt, D. Spivak, Subramanian Balamurugan

Publications

Reclaimed Asphalt Pavement (RAP) binders are difficult to reuse because they often contain associated/aggregated molecules with very high molecular weights. This is due to the polarity gained during oxidative aging, causing the aggregation to occur. These high molecular weight components are responsible for RAP binder’s increased viscosity and certain deteriorated rheological properties. One strategy to reuse RAP binder is to mix it with virgin asphalt binder and use this partially recycled mixture in asphalt. The RAP binder is usually improved before mixing by the addition of rejuvenators, softening agents, softer binders, and antioxidants to the asphalt binder mix to rebalance …

Smart Battery Management System For Electric Vehicles: Selflearning Algorithms For Simultaneous State And Parameter Estimation, And Stress Detection, Avimanyu Sahoo, Samir Ahmed

Data

The project proposes to develop parameter-varying SOH-coupled models for lithium-ion battery and self-learning algorithms to learn the model for simultaneous state and parameter estimation and fault detection. The traditional battery models use constant parameters, limiting their accuracy for predicting the state of the charge and health over the complete life-cycle. In practice, the battery parameters vary with the change in the state of charge and state of health. SOH-coupled models can be used to estimate the state of charge and health accurately. Further, obtaining the model parameters is also a challenging task for designing filters or observers for state estimation. …

Expanding The Concept Of Comprehensive Area Ratio Parameter To The South-Central States: Towards Simplifying The Structural Evaluation Of Flexible Pavements At The Network Level, Mena Souliman, Samer Dessouky, Nitish R. Bastola

Data

The surface deflection bowl data collected through falling weight deflectometer (FWD) test is utilized by highway agencies in assessing the performance of the flexible pavement. However, a robust method to evaluate pavement sections utilizing FWD data from all the sensors is seldom developed. There is always a need for DOTs and highway agencies to have a simplified procedure, which can be directly implemented in agencies' databases. This study focuses on expanding and validating the concept of previously developed area ratio parameters towards the pavement section of South-Central States (Arkansas, Louisiana, New Mexico, Oklahoma, and Texas) in effectively analyzing the pavement …

Field Implementation And Monitoring Of An Ultra-High Performance Concrete Bridge Deck Overlay, Craig Newtson, Brad Weldon, William Toledo, Andres Alvarez, Mark Manning

Data

This project focused on field implementation of an ultra-high performance concrete (UHPC) overlay during rehabilitation of an existing concrete bridge (No. 7032) deck in Socorro, New Mexico, USA. Bridge 7032 is a two-lane bridge that is approximately 300 ft. (91.4 m) long and 54 ft. (16.5 m) in width. Rehabilitation of bridge 7032 included removal of deteriorated concrete from the existing deck, installation of a high-performance deck (HPD) leveling course, and installation of a 1 in. (25 mm) UHPC overlay. An UHPC mixture with a 19.5 ksi (134 MPa) compressive strength developed in previous research was selected for this project. …

Field Implementation And Monitoring Of An Ultra-High Performance Concrete Bridge Deck Overlay, Craig Newtson, Brad Weldon, William Toledo, Andres Alvarez, Mark Manning

Publications

This project focused on field implementation of an ultra-high performance concrete (UHPC) overlay during rehabilitation of an existing concrete bridge (No. 7032) deck in Socorro, New Mexico, USA. Bridge 7032 is a two-lane bridge that is approximately 300 ft. (91.4 m) long and 54 ft. (16.5 m) in width. Rehabilitation of bridge 7032 included removal of deteriorated concrete from the existing deck, installation of a high-performance deck (HPD) leveling course, and installation of a 1 in. (25 mm) UHPC overlay. An UHPC mixture with a 19.5 ksi (134 MPa) compressive strength developed in previous research was selected for this project. …

Degradative Tubular Lysosomes Link Pexophagy To Starvation And Early Aging In C. Elegans, D A. Dolese, M P. Junot, B Ghosh, T J. Butsch, D A. Dolese, K A. Bohnert

Faculty Publications

Organelle-specific autophagy directs degradation of eukaryotic organelles under certain conditions. Like other organelles, peroxisomes are subject to autophagic turnover at lysosomes. However, peroxisome autophagy (pexophagy) has yet to be analyzed in a live-animal system, limiting knowledge on its regulation during an animal's life. Here, we generated a tandem-fluorophore reporter that enabled real-time tracking of pexophagy in live Caenorhabditis elegans. We observed that pexophagy occurred at a population of non-canonical, tubular lysosomes specifically during starvation and aging. Remarkably, in these contexts, tubular lysosomes were the predominant type of lysosome in the intestine, transforming from vesicles. Though we found that peroxisomes were …

The Dynamics Of Introgression Across An Avian Radiation, S Singhal, G E. Derryberry, G A. Bravo, E P. Derryberry, S Singhal, M G. Harvey

Faculty Publications

Hybridization and resulting introgression can play both a destructive and a creative role in the evolution of diversity. Thus, characterizing when and where introgression is most likely to occur can help us understand the causes of diversification dynamics. Here, we examine the prevalence of and variation in introgression using phylogenomic data from a large (1300+ species), geographically widespread avian group, the suboscine birds. We first examine patterns of gene tree discordance across the geographic distribution of the entire clade. We then evaluate the signal of introgression in a subset of 206 species triads using Patterson's D-statistic and test for associations …

Observation Of The Modification Of Quantum Statistics Of Plasmonic Systems, Chenglong You, Mingyuan Hong, Narayan Bhusal, Jinnan Chen, Mario A. Quiroz-Juárez, Joshua Fabre, Fatemeh Mostafavi, Junpeng Guo, Israel De Leon, Roberto De J. León-Montiel, Omar S. Magaña-Loaiza

Faculty Publications

For almost two decades, researchers have observed the preservation of the quantum statistical properties of bosons in a large variety of plasmonic systems. In addition, the possibility of preserving nonclassical correlations in light-matter interactions mediated by scattering among photons and plasmons stimulated the idea of the conservation of quantum statistics in plasmonic systems. It has also been assumed that similar dynamics underlie the conservation of the quantum fluctuations that define the nature of light sources. So far, plasmonic experiments have been performed in nanoscale systems in which complex multiparticle interactions are restrained. Here, we demonstrate that the quantum statistics of …

Scalable Multiphoton Quantum Metrology With Neither Pre- Nor Post-Selected Measurements, Chenglong You, Mingyuan Hong, Peter Bierhorst, Adriana E. Lita, Scott Glancy, Steve Kolthammer, Emanuel Knill, Sae Woo Nam, Richard P. Mirin, Omar S. Magaña-Loaiza, Thomas Gerrits

Faculty Publications

The quantum statistical fluctuations of electromagnetic fields establish a limit, known as the shot-noise limit, on the sensitivity of optical measurements performed with classical technologies. However, quantum technologies are not constrained by this shot-noise limit. In this regard, the possibility of using every photon produced by quantum sources of light to estimate small physical parameters, beyond the shot-noise limit, constitutes one of the main goals of quantum optics. Here, we experimentally demonstrate a scalable protocol for quantum-enhanced optical phase estimation across a broad range of phases, with neither pre- nor post-selected measurements. This is achieved through the efficient design of …

Deep Underground Neutrino Experiment (Dune) Near Detector Conceptual Design Report, A. Abed Abud, B. Abi, R. Acciarri, M. A. Acero, G. Adamov, D. Adams, M. Adinolfi, A. Aduszkiewicz, Z. Ahmad, J. Ahmed, T. Alion, S. Alonso Monsalve, M. Alrashed, C. Alt, A. Alton, P. Amedo, J. Anderson, C. Andreopoulos, M. P. Andrews, F. Andrianala, S. Andringa, N. Anfimov, A. Ankowski, M. Antonova, S. Antusch, A. Aranda-Fernandez, A. Ariga, L. O. Arnold, M. A. Arroyave, J. Asaadi, A. Aurisano, V. Aushev, D. Autiero

Faculty Publications

The Deep Underground Neutrino Experiment (DUNE) is an international, world-class experiment aimed at exploring fundamental questions about the universe that are at the forefront of astrophysics and particle physics research. DUNE will study questions pertaining to the preponderance of matter over antimatter in the early universe, the dynamics of supernovae, the subtleties of neutrino interaction physics, and a number of beyond the Standard Model topics accessible in a powerful neutrino beam. A critical component of the DUNE physics program involves the study of changes in a powerful beam of neutrinos, i.e., neutrino oscillations, as the neutrinos propagate a long distance. …

Controllable Quantum Point Junction On The Surface Of An Antiferromagnetic Topological Insulator, Nicodemos Varnava, Justin H. Wilson, J. H. Pixley, David Vanderbilt

Faculty Publications

Engineering and manipulation of unidirectional channels has been achieved in quantum Hall systems, leading to the construction of electron interferometers and proposals for low-power electronics and quantum information science applications. However, to fully control the mixing and interference of edge-state wave functions, one needs stable and tunable junctions. Encouraged by recent material candidates, here we propose to achieve this using an antiferromagnetic topological insulator that supports two distinct types of gapless unidirectional channels, one from antiferromagnetic domain walls and the other from single-height steps. Their distinct geometric nature allows them to intersect robustly to form quantum point junctions, which then …

Rare Regions And Avoided Quantum Criticality In Disordered Weyl Semimetals And Superconductors, J. H. Pixley, Justin H. Wilson

Faculty Publications

Disorder in Weyl semimetals and superconductors is surprisingly subtle, attracting attention and competing theories in recent years. In this brief review, we discuss the current theoretical understanding of the effects of short-ranged, quenched disorder on the low energy-properties of three-dimensional, topological Weyl semimetals and superconductors. We focus on the role of non-perturbative rare region effects on destabilizing the semimetal phase and rounding the expected semimetal-to-diffusive metal transition into a cross over. Furthermore, the consequences of disorder on the resulting nature of excitations, transport, and topology are reviewed. New results on a bipartite random hopping model are presented that confirm previous …

Super-Adsorbent Hydrogels For Removal Of Methylene Blue From Aqueous Solution: Dye Adsorption Isotherms, Kinetics, And Thermodynamic Properties, Buddhabhushan Salunkhe, Thomas P. Schuman

Chemistry Faculty Research & Creative Works

Removal of dyes through adsorption from wastewater has gained substantial interest in recent years, especially in development of hydrogel-based adsorbents, owing to their easy use and economical nature. The aim of the present study was to design a super-adsorbent hydrogel based on sodium styrene sulfonate (NaSS) monomer for removal of dyes like methylene blue (MB). NaSS displays both an aromatic ring and strongly ionic group in its monomer structure that can enhance adsorption capacity. Poly (sodium styrene sulfonate-co-dimethylacrylamide) hydrogels were prepared by solution free radical polymerization using gelatin meth acryloyl (GelMA) as crosslinker, creating a highly porous, three-dimensionally crosslinked polymer …

Experimental Modal Analysis Of Distinguishing Microstructural Variations In Carbon Steel Sa516 By Applied Heat Treatments, Natural Frequencies, And Damping Coefficients, Mohammadreza Ahmadpar, Siamak Hoseinzadeh, Fardis Nakhaei, Saim Memon

Mining Engineering Faculty Research & Creative Works

The life assessment of materials that structurally shifts, creating mechanical corrosion and damage, during the operation at high temperatures is one of the most critical areas in the gas turbine power plants. This study investigates the widely used carbon steel grade 55 SA516 in the gas turbine blades at metallographic microscopic level and relating it to natural frequency and damping coefficients. In which heat treatments (aging tests) were applied and compared between multiple samples. The results show pearlite is broken up and converted into the ferrite and spherical carbides at grain boundaries. With an increase in microstructural variations in samples …

Solid-State Nmr Of Unlabeled Plant Cell Walls: High-Resolution Structural Analysis Without Isotopic Enrichment, Wancheng Zhao, Alex Kirui, Fabien Deligey, Frederic Mentink-Vigier, Yihua Zhou, Baocai Zhang, Tuo Wang

Faculty Publications

© 2021, The Author(s). Background: Multidimensional solid-state nuclear magnetic resonance (ssNMR) spectroscopy has emerged as an indispensable technique for resolving polymer structure and intermolecular packing in primary and secondary plant cell walls. Isotope (13C) enrichment provides feasible sensitivity for measuring 2D/3D correlation spectra, but this time-consuming procedure and its associated expenses have restricted the application of ssNMR in lignocellulose analysis. Results: Here, we present a method that relies on the sensitivity-enhancing technique Dynamic Nuclear Polarization (DNP) to eliminate the need for 13C-labeling. With a 26-fold sensitivity enhancement, a series of 2D 13C–13C correlation spectra were successfully collected using the unlabeled …

Soybean Leaf Age And Plant Stage Influence Expression Of Resistance To Velvetbean Caterpillar And Fall Armyworm, Bruno H.S. Souza, Eduardo N. Costa, Zulene A. Ribeiro, Bruno Perlatti, Mara C.P. Cruz, Moacir R. Forim, Arlindo L.Boiça Júnior, Michael J. Stout

Faculty Publications

Numerous species of herbivorous insects are associated with soybeans, including the specialist velvetbean caterpillar (VBC), Anticarsia gemmatalis, and the generalist fall armyworm (FAW), Spodoptera frugiperda. Expression of plant resistance is influenced by factors intrinsic to host plants, such as leaf age and plant stage, which can differentially affect specialist and generalist insects due to varying levels of plant defense and corresponding insect adaptation. In this study, four experiments were carried out to test the hypotheses that levels of antibiosis-resistance to VBC and FAW in the resistant genotype PI 227,687 and susceptible genotype IGRA RA 626 RR are related to leaf …