Cell Press最新文献

Biomimetic Wave Propagation in Magnetic Soft Actuator 磁性软执行器中的仿生波传播

Cell Press Pub Date : 2022-12-16 DOI: 10.2139/ssrn.3949874

F. Tsumori, Hayato Shinoda

引用次数: 0

Revealing Robust Oil and Gas Company Macro-Strategies Using Deep Multi-Agent Reinforcement Learning 利用深度多智能体强化学习揭示油气公司稳健的宏观战略

Cell Press Pub Date : 2022-11-20 DOI: 10.2139/ssrn.3933996

Dylan Radovic, L. Kruitwagen, C. S. D. Witt, Ben Caldecott, S. Tomlinson, M. Workman

{"title":"Revealing Robust Oil and Gas Company Macro-Strategies Using Deep Multi-Agent Reinforcement Learning","authors":"Dylan Radovic, L. Kruitwagen, C. S. D. Witt, Ben Caldecott, S. Tomlinson, M. Workman","doi":"10.2139/ssrn.3933996","DOIUrl":"https://doi.org/10.2139/ssrn.3933996","url":null,"abstract":"The energy transition potentially poses an existential risk for major international oil companies (IOCs) if they fail to adapt to low-carbon business models. Projections of energy futures, however, are met with diverging assumptions on its scale and pace, causing disagreement among IOC decision-makers and their stakeholders over what the business model of an incumbent fossil fuel company should be. In this work, we used deep multi-agent reinforcement learning to solve an energy systems wargame wherein players simulate IOC decision-making, including hydrocarbon and low-carbon investments decisions, dividend policies, and capital structure measures, through an uncertain energy transition to explore critical and non-linear governance questions, from leveraged transitions to reserve replacements. Adversarial play facilitated by state-of-the-art algorithms revealed decision-making strategies robust to energy transition uncertainty and against multiple IOCs. In all games, robust strategies emerged in the form of low-carbon business models as a result of early transition-oriented movement. IOCs adopting such strategies outperformed business-as-usual and delayed transition strategies regardless of hydrocarbon demand projections. In addition to maximizing value, these strategies benefit greater society by contributing substantial amounts of capital necessary to accelerate the global low-carbon energy transition. Our findings point towards the need for lenders and investors to effectively mobilize transition-oriented finance and engage with IOCs to ensure responsible reallocation of capital towards low-carbon business models that would enable the emergence of fossil fuel incumbents as future low-carbon leaders.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133677717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Multi-Wavelength Magnetic Coding of Helical Luminescence in Ferromagnetic 2D Layered CrI 3 铁磁二维层状cri3中螺旋发光的多波长磁编码

Cell Press Pub Date : 2022-04-28 DOI: 10.2139/ssrn.3891800

Zhiyong Chen, Yue Li, Zhen Liu, D. Liang, Longjiang Deng, Bo Peng

{"title":"Multi-Wavelength Magnetic Coding of Helical Luminescence in Ferromagnetic 2D Layered CrI 3","authors":"Zhiyong Chen, Yue Li, Zhen Liu, D. Liang, Longjiang Deng, Bo Peng","doi":"10.2139/ssrn.3891800","DOIUrl":"https://doi.org/10.2139/ssrn.3891800","url":null,"abstract":"Two-dimensional (2D) van der Waals (vdW) ferromagnets have opened new avenues for manipulating spin at the limits of single or few atomic layers, and for creating unique magneto-exciton devices through the coupling of long-range ferromagnetic (FM) orders and excitons. However, 2D vdW ferromagnets explored so far have rarely possessed exciton behaviors; to date, FM CrI3 have been recently revealed to show ligand-field photoluminescence correlated with FM ordering, but typically with a broad emission peak. Alternatively, many-body excitons have been observed in antiferromagnetic (AFM) NiPS3, but the coupling of excitons with AFM orders is exponentially more difficult, owing to extremely high coercivity. Here, we report a straightforward approach to realize strong coupling of narrow helical emission and FM orders at a low magnetic field in CrI3 through a relatively simple microsphere cavity. We show that the resonant whispering-gallery-modes (WGM) of SiO2 microspheres give rising to a series of strong oscillation helical emissions with a full width at half-maximum (FWHM) of ~5 nm under continuous wave excitation. Reversible magnetic control and coding of helical luminescence with multiwavelength is realized in the range of 950-1100 nm. This work enables plenty of opportunities for creating magnetic encoding lasing for photonic integrated chips.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134543709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Understanding the Formation of Antiphase Boundaries in Layered Oxide Cathode Materials and Their Evolution Upon Electrochemical Cycling 层状氧化物正极材料反相边界的形成及其在电化学循环过程中的演变

Cell Press Pub Date : 2021-10-01 DOI: 10.2139/ssrn.3872943

Shamail Ahmed, A. Pokle, M. Bianchini, Simon Schweidler, A. Beyer, T. Brezesinski, J. Janek, K. Volz

{"title":"Understanding the Formation of Antiphase Boundaries in Layered Oxide Cathode Materials and Their Evolution Upon Electrochemical Cycling","authors":"Shamail Ahmed, A. Pokle, M. Bianchini, Simon Schweidler, A. Beyer, T. Brezesinski, J. Janek, K. Volz","doi":"10.2139/ssrn.3872943","DOIUrl":"https://doi.org/10.2139/ssrn.3872943","url":null,"abstract":"Layered Li(Ni1-x-yCoxMny)O2 (NCM, with Ni ≥ 0.8) cathode materials are essential to achieve high energy densities in the next generation of lithium-ion batteries. This increased performance comes at the expense of stability. To extend the materials’ lifetime, it is necessary to understand the role that crystal defects play in the degradation during electrochemical cycling. In this study, NCM851005 (85% Ni) is investigated in the pristine state and after 100 and 200 cycles using scanning transmission electron microscopy (STEM), with the focus being on the defects in the material. The formation of antiphase boundaries (APB) from a dislocation in a pristine sample is proven. After 100 cycles, the APBs’ length and width are enlarged compared to the pristine state. After 200 cycles, APBs further evolve into an intragranular rock salt-like phase, distorting the nearby layered structure. It is suggested that the behavior of APBs plays a critical role in determining the performance of this cathode material with prolonged electrochemical cycling. These findings will help to understand better the role of dislocations and antiphase boundaries with electrochemical cycling, and the role of dopants may then be explored to avoid them.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116248699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Storage and Cleaning Extend Lifetime of Glass Nanopores for Biosensing 储存和清洗延长生物传感用玻璃纳米孔的使用寿命

Cell Press Pub Date : 2021-08-18 DOI: 10.2139/ssrn.3907624

M. Alawami, F. Bošković, Jinbo Zhu, Kaikai Chen, Sarah E. Sandler, U. Keyser

引用次数: 0

An Axial-to-Axial Chirality Transfer Strategy for Atroposelective Construction of C–N Axial Chirality 一种轴向手性转移策略用于C-N轴向手性的atroopselective Construction

Cell Press Pub Date : 2021-05-13 DOI: 10.2139/ssrn.3783402

Zeshui Liu, Pei-Pei Xie, Yuanda Hua, Chenggui Wu, Yuanyuan Ma, Jiangwei Chen, Hong‐Gang Cheng, Xin Hong, Qianghui Zhou

引用次数: 31

Water-Dispersible Ti 3C 2T z MXene Nanosheets by Acid-Free, Molten Salt Etching 无酸熔盐刻蚀制备水分散Ti - 3C - 2tz - MXene纳米片

Cell Press Pub Date : 2021-05-04 DOI: 10.2139/ssrn.3802026

K. Arole, Jackson W. Blivin, S. Saha, Xiaofei Zhao, Dustin Holta, A. Sarmah, Huaixuan Cao, M. Radovic, J. Lutkenhaus, Micah J. Green

{"title":"Water-Dispersible Ti 3C 2T z MXene Nanosheets by Acid-Free, Molten Salt Etching","authors":"K. Arole, Jackson W. Blivin, S. Saha, Xiaofei Zhao, Dustin Holta, A. Sarmah, Huaixuan Cao, M. Radovic, J. Lutkenhaus, Micah J. Green","doi":"10.2139/ssrn.3802026","DOIUrl":"https://doi.org/10.2139/ssrn.3802026","url":null,"abstract":"Molten-salt etching of Ti3AlC2 MAX phase offers a promising route to produce 2D Ti3C2Tz (MXene) nanosheets without the need for hazardous HF. However, molten-salt etching generally results in MXene clays that are not fully exfoliated or water-dispersible, thus preventing nanosheet processing. This occurs because molten-salt etching generally results in a high level of -F terminal functionalities that render the MXene clay hydrophobic. Here, we demonstrate a molten salt (SnF2) etching method that, for the first time, produces water-dispersible Ti3C2Tz nanosheets without the need for HF. In molten salt etching, SnF2 diffuses between the layers during etching to form AlF3 and Sn as byproducts; Sn spheres form internally and separate the layers. The stable, aqueous Ti3C2Tz dispersion yields a ζ potential of -31.7 mV, because of -OH terminal groups introduced by KOH washing. X-ray diffraction and electron microscopy confirm the formation of Ti3C2Tz etched clay with substantial d-spacing as compared to the clay from a traditional HF-process. This work is the first to use molten salt etching to successfully prepare colloidally stable aqueous dispersions of Ti3C2Tz nanosheets. The Ti3C2Tz nanosheet film and clay produced by this method also show excellent specific and areal capacitance and conductivity.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123536459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Interleukin-6 Blockade Abrogates Immunotherapy Toxicity and Promotes Tumor Immunity 白细胞介素-6阻断消除免疫治疗毒性并促进肿瘤免疫

Cell Press Pub Date : 2021-03-19 DOI: 10.2139/ssrn.3808296

Y. Hailemichael, Daniel H Johnson, N. Abdel-Wahab, W. Foo, M. Daher, C. Haymaker, K. Wani, C. Saberian, D. Ogata, S. Bentebibel, Sang T Kim, R. Nurieva, Alexander J F Lazar, Hamzah Abu-Sbeih, Yinghong Wang, V. Trinh, Chrystia M Zobniw, C. Spillson, J. Burks, L. Solis, A. Francisco Cruz, Mario L. Marques-Piubelli, Wei Lu, Brenda D. Melendez, M. Davies, J. Wargo, J. Curry, G. Lizée, C. Yee, P. Hwu, S. Ekmekcioglu, A. Diab

{"title":"Interleukin-6 Blockade Abrogates Immunotherapy Toxicity and Promotes Tumor Immunity","authors":"Y. Hailemichael, Daniel H Johnson, N. Abdel-Wahab, W. Foo, M. Daher, C. Haymaker, K. Wani, C. Saberian, D. Ogata, S. Bentebibel, Sang T Kim, R. Nurieva, Alexander J F Lazar, Hamzah Abu-Sbeih, Yinghong Wang, V. Trinh, Chrystia M Zobniw, C. Spillson, J. Burks, L. Solis, A. Francisco Cruz, Mario L. Marques-Piubelli, Wei Lu, Brenda D. Melendez, M. Davies, J. Wargo, J. Curry, G. Lizée, C. Yee, P. Hwu, S. Ekmekcioglu, A. Diab","doi":"10.2139/ssrn.3808296","DOIUrl":"https://doi.org/10.2139/ssrn.3808296","url":null,"abstract":"Immune checkpoint blockade (ICB) for cancer is associated with high response rates but also high rates of adverse events. To elucidate the underlying immunobiology, we profiled gene expression in intestinal, colitis, and tumor tissue from ICB-treated patients, with parallel studies in preclinical models, and validated our findings in a review of clinical cohort treated with interleukin-6 blockade. Expression of interleukin-6, neutrophil and chemotactic markers was higher in colitis than in normal intestinal tissue. The genes upregulated in colitis were not upregulated in responding tumors from patients receiving ICB. In murine models, interleukin-6 blockade was associated with improved tumor control and a higher density of CD4/CD8 effector T-cells, with reduced Th17, macrophages, and myeloid cells. In an experimental autoimmune encephalomyelitis (EAE) model with tumors, combined interleukin-6 blockade and ICB enhanced tumor rejection while simultaneously mitigating EAE symptoms versus ICB alone. Interleukin-6 blockade with ICB could de-couple autoimmunity from antitumor immunity.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115350513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Dynamic Multiligand Catalysis: A Closed/Open Shell Crossover Strategy Expands Alkyne Carboboration to Unactivated Secondary Alkyl Halides 动态多配体催化:一种闭合/开壳交叉策略将炔碳硼化扩展为未活化的仲烷基卤化物

Cell Press Pub Date : 2021-02-01 DOI: 10.2139/SSRN.3777471

Shin-Ho Kim-Lee, Pablo Mauleón Pérez, R. Gómez Arrayás, J. Carretero

引用次数: 0

Machine Learning-Guided Equations for Super-Fast Prediction of Methane Storage Capacities of COFs COFs甲烷储量超快速预测的机器学习导向方程

Cell Press Pub Date : 2020-12-19 DOI: 10.2139/ssrn.3751765

Alauddin Ahmed

{"title":"Machine Learning-Guided Equations for Super-Fast Prediction of Methane Storage Capacities of COFs","authors":"Alauddin Ahmed","doi":"10.2139/ssrn.3751765","DOIUrl":"https://doi.org/10.2139/ssrn.3751765","url":null,"abstract":"Covalent organic framework (COF) is a prominent class of nanoporous materials under consideration for vehicular methane storage. However, evaluating a COF for its methane capacity involves multiple experimental or computational steps, which is expensive and time consuming. Consequently, the discovery of high-capacity COFs for methane storage is very slow. Here we developed equations for super-fast prediction of deliverable methane capacities of COFs from a small number (3 to 7) of physically meaningful and measurable crystallographic features. We provided a set of equations with different fidelities for on-demand predictions based on the accessibility of crystallographic features. We found that an equation with only three crystallographic primary features, as variables, can predict deliverable capacities of 84,800 COFs with a root-mean-square error (RMSE) of 10 cm3 (standard temperature and pressure, STP) cm-3 and mean absolute percentage error (MAPE) of 5%. However, the highest fidelity equation developed here contains seven crystallographic primary features of COFs with RMSE and MAPE of 8.1 cm3 (STP) cm-3 and 4.2%, respectively. With that, we predicted methane storage capacities of 468,343 previously unexplored COFs using the highest fidelity equation and identified several hundred promising candidates with record-setting performance. CUBE_PBB_BA2, a hypothetical COF not yet synthesized, sets the new record of balancing gravimetric (0.396 g g-1) and volumetric (221 cm3 (STP) cm-3) deliverable methane storage capacities under the pressure swing between 65 and 5.8 bar at 298K. Also, 3D-HNU5, a previously synthesized COF, has shown the potential to achieve the gravimetric and volumetric methane storage U.S. Department of Energy target (0.5 g g-1 and 315 cm3 (STP) cm-3) simultaneously with uptakes of 0.755 g g-1 and 334 cm3 (STP) cm-3 at 100 bar/270 K.","PeriodicalId":244417,"journal":{"name":"Cell Press","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121255084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0