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14,978 results on '"Wen Yan"'

211. Investigation of Different Winemaking Protocols to Mitigate Smoke Taint Character in Wine.

Author

Oberholster, Anita, Wen, Yan, Dominguez Suarez, Sandra, Erdmann, Jesse, Cauduro Girardello, Raul, Rumbaugh, Arran, Neupane, Bishnu, Brenneman, Charles, Cantu, Annegret, and Heymann, Hildegarde

Subjects
Wine, fermentation temperature, oak, sensory, smoke, volatile phenols, wine, yeast, Medicinal and Biomolecular Chemistry, Organic Chemistry, Theoretical and Computational Chemistry
Abstract

There is an increase in the levels of volatile phenols in wine made with smoke-impacted grapes. These compounds are present in wood smoke resulting from the pyrolysis (thermal decomposition) of lignin and at high levels give overpowering smoky and ashy characters to a wine. This research aimed to compare all the suggested wine mitigation strategies that evolved from prior research using smoke-impacted grapes under identical winemaking conditions except for the parameter under investigation. Cabernet Sauvignon grapes were received from three areas with varying amounts of smoke exposure in Northern California. Gas chromatography combined with mass spectrometry (GC-MS) and descriptive analyses were performed to correlate the volatile phenol composition to smoke taint characteristics. The winemaking variables investigated were the use of different fermentation yeasts, oak additions, and fermentation temperatures. Among other attributes, smokiness and ashy aftertaste were significantly different among the wines, showing a clear difference between the wines made from smoke-impacted fruit and the control wines made from non-impacted fruit. Findings indicate that mitigation strategies during red wine fermentation have a limited impact on the extraction of smoke-taint markers and the expression of smoke-taint sensory characteristics.

Published
2022

235. Digital Economy Platform Construction and Operation Driven by Big Data

Author

Guo, Wen-yan, Dou, Runliang, Editor-in-Chief, Liu, Jing, Editor-in-Chief, Khasawneh, Mohammad T., Editor-in-Chief, Balas, Valentina Emilia, Series Editor, Bhowmik, Debashish, Series Editor, Khan, Khalil, Series Editor, Masehian, Ellips, Series Editor, Mohammadi-Ivatloo, Behnam, Series Editor, Nayyar, Anand, Series Editor, Pamucar, Dragan, Series Editor, Shu, Dewu, Series Editor, Hemachandran, K., editor, Boddu, Raja Sarath Kumar, editor, and Alhasan, Waseem, editor

Published
2023
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237. Magnetic memory driven by topological insulators.

Author

Wu, Hao, Chen, Aitian, Zhang, Peng, He, Haoran, Nance, John, Guo, Chenyang, Sasaki, Julian, Shirokura, Takanori, Hai, Pham Nam, Fang, Bin, Razavi, Seyed Armin, Wong, Kin, Wen, Yan, Ma, Yinchang, Yu, Guoqiang, Carman, Gregory P, Han, Xiufeng, Zhang, Xixiang, and Wang, Kang L

Abstract

Giant spin-orbit torque (SOT) from topological insulators (TIs) provides an energy efficient writing method for magnetic memory, which, however, is still premature for practical applications due to the challenge of the integration with magnetic tunnel junctions (MTJs). Here, we demonstrate a functional TI-MTJ device that could become the core element of the future energy-efficient spintronic devices, such as SOT-based magnetic random-access memory (SOT-MRAM). The state-of-the-art tunneling magnetoresistance (TMR) ratio of 102% and the ultralow switching current density of 1.2 × 105 A cm-2 have been simultaneously achieved in the TI-MTJ device at room temperature, laying down the foundation for TI-driven SOT-MRAM. The charge-spin conversion efficiency θSH in TIs is quantified by both the SOT-induced shift of the magnetic switching field (θSH = 1.59) and the SOT-induced ferromagnetic resonance (ST-FMR) (θSH = 1.02), which is one order of magnitude larger than that in conventional heavy metals. These results inspire a revolution of SOT-MRAM from classical to quantum materials, with great potential to further reduce the energy consumption.

Published
2021

238. peri -Adventitial delivery of smooth muscle cells in porous collagen scaffolds for treatment of experimental abdominal aortic aneurysm

Author

Mulorz, Joscha, Shayan, Mahdis, Hu, Caroline, Alcazar, Cynthia, Chan, Alex HP, Briggs, Mason, Wen, Yan, Walvekar, Ankita P, Ramasubramanian, Anand K, Spin, Joshua M, Chen, Bertha, Tsao, Philip S, and Huang, Ngan F

Subjects
Engineering, Biomedical and Clinical Sciences, Biomedical Engineering, Stem Cell Research - Induced Pluripotent Stem Cell - Human, Cardiovascular, Stem Cell Research, Rare Diseases, Stem Cell Research - Nonembryonic - Human, Regenerative Medicine, Orphan Drug, Stem Cell Research - Induced Pluripotent Stem Cell, 5.2 Cellular and gene therapies, 2.1 Biological and endogenous factors, Adventitia, Animals, Aortic Aneurysm, Abdominal, Cells, Cultured, Collagen, Mice, Myocytes, Smooth Muscle, Porosity, Swine, Medicinal and Biomolecular Chemistry, Biochemistry and Cell Biology, Medical Biotechnology, Medical biotechnology, Biomedical engineering
Abstract

Abdominal aortic aneurysm (AAA) is associated with the loss of vascular smooth muscle cells (SMCs) within the vessel wall. Direct delivery of therapeutic cells is challenging due to impaired mechanical integrity of the vessel wall. We hypothesized that porous collagen scaffolds can be an effective vehicle for the delivery of human-derived SMCs to the site of AAA. The purpose was to evaluate if the delivery of cell-seeded scaffolds can abrogate progressive expansion in a mouse model of AAA. Collagen scaffolds seeded with either primary human aortic SMCs or induced pluripotent stem cell derived-smooth muscle progenitor cells (iPSC-SMPs) had >80% in vitro cell viability and >75% cell penetrance through the scaffold's depth, while preserving smooth muscle phenotype. The cell-seeded scaffolds were successfully transplanted onto the murine aneurysm peri-adventitia on day 7 following AAA induction using pancreatic porcine elastase infusion. Ultrasound imaging revealed that SMC-seeded scaffolds significantly reduced the aortic diameter by 28 days, compared to scaffolds seeded with iPSC-SMPs or without cells (acellular scaffold), respectively. Bioluminescence imaging demonstrated that both cell-seeded scaffold groups had cellular localization to the aneurysm but a decline in survival with time. Histological analysis revealed that both cell-seeded scaffold groups had more SMC retention and less macrophage invasion into the medial layer of AAA lesions, when compared to the acellular scaffold treatment group. Our data suggest that scaffold-based SMC delivery is feasible and may constitute a platform for cell-based AAA therapy.

Published
2021

239. Chiral Helimagnetism and One‐Dimensional Magnetic Solitons in a Cr‐Intercalated Transition Metal Dichalcogenide

Author

Zhang, Chenhui, Zhang, Junwei, Liu, Chen, Zhang, Senfu, Yuan, Ye, Li, Peng, Wen, Yan, Jiang, Ze, Zhou, Bojian, Lei, Yongjiu, Zheng, Dongxing, Song, Chengkun, Hou, Zhipeng, Mi, Wenbo, Schwingenschlögl, Udo, Manchon, Aurélien, Qiu, Zi Qiang, Alshareef, Husam N, Peng, Yong, and Zhang, Xi‐Xiang

Subjects
chiral soliton lattice, Dzyaloshinskii-Moriya interaction, magnetic solitons, topological spin textures, two-dimensional materials, Physical Sciences, Chemical Sciences, Engineering, Nanoscience & Nanotechnology
Abstract

Chiral magnets endowed with topological spin textures are expected to have promising applications in next-generation magnetic memories. In contrast to the well-studied 2D or 3D magnetic skyrmions, the authors report the discovery of 1D nontrivial magnetic solitons in a transition metal dichalcogenide 2H-TaS2 via precise intercalation of Cr elements. In the synthetic Cr1/3 TaS2 (CTS) single crystal, the coupling of the strong spin-orbit interaction from TaS2 and the chiral arrangement of the magnetic Cr ions evoke a robust Dzyaloshinskii-Moriya interaction. A magnetic helix having a short spatial period of ≈25 nm is observed in CTS via Lorentz transmission electron microscopy. In a magnetic field perpendicular to the helical axis, the helical spin structure transforms into a chiral soliton lattice (CSL) with the spin structure evolution being consistent with the chiral sine-Gordon theory, which opens promising perspectives for the application of CSL to fast-speed nonvolatile magnetic memories. This work introduces a new paradigm to soliton physics and provides an effective strategy for seeking novel 2D magnets.

Published
2021

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