检索结果-内蒙古大学图书馆

Scientific discovery in the age of artificial intelligence

NATURE 2023年第7978期621卷 E33-E33页

作者： Wang, Hanchen Fu, Tianfan Du, Yuanqi Gao, Wenhao Huang, Kexin Liu, Ziming Chandak, Payal Liu, Shengchao Van Katwyk, Peter Deac, Andreea Anandkumar, Anima Bergen, Karianne Gomes, Carla P. Ho, Shirley Kohli, Pushmeet Lasenby, Joan Leskovec, Jure Liu, Tie-Yan Manrai, Arjun Marks, Debora Ramsundar, Bharath Song, Le Sun, Jimeng Tang, Jian Velickovic, Petar Welling, Max Zhang, Linfeng Coley, Connor W. Bengio, Yoshua Zitnik, Marinka Department of Engineering University of Cambridge Cambridge UK Department of Computing and Mathematical Sciences California Institute of Technology Pasadena CA USA NVIDIA Santa Clara CA USA Department of Computational Science and Engineering Georgia Institute of Technology Atlanta GA USA Department of Computer Science Cornell University Ithaca NY USA Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA USA Department of Computer Science Stanford University Stanford CA USA Department of Physics Massachusetts Institute of Technology Cambridge MA USA Harvard-MIT Program in Health Sciences and Technology Cambridge MA USA Mila – Quebec AI Institute Montreal Quebec Canada Université de Montréal Montreal Quebec Canada HEC Montréal Montreal Quebec Canada CIFAR AI Chair Toronto Ontario Canada Department of Earth Environmental and Planetary Sciences Brown University Providence RI USA Data Science Institute Brown University Providence RI USA Center for Computational Astrophysics Flatiron Institute New York NY USA Department of Astrophysical Sciences Princeton University Princeton NJ USA Department of Physics Carnegie Mellon University Pittsburgh PA USA Department of Physics and Center for Data Science New York University New York NY USA Google DeepMind London UK Department of Computer Science and Technology University of Cambridge Cambridge UK Microsoft Research Beijing China Department of Biomedical Informatics Harvard Medical School Boston MA USA Broad Institute of MIT and Harvard Cambridge MA USA Harvard Data Science Initiative Cambridge MA USA Kempner Institute for the Study of Natural and Artificial Intelligence Harvard University Cambridge MA USA Department of Systems Biology Harvard Medical School Boston MA USA Deep Forest Sciences Palo Alto CA USA BioMap Beijing China Mo

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to "miR-29a-3p-dependent COL3A1 and COL5A1 expression reduction assists sulforaphane to inhibit gastric cancer progression" [Biochem. Pharmacol. 188 (2021) 114539]

引用

Biochemical pharmacology 2023年 208卷 115389页

作者： Sichong Han Zhe Wang Jining Liu Hui-Min David Wang Qipeng Yuan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 PR China. Graduate Institute of Biomedical Engineering National Chung Hsing University Taichung City 402 Taiwan Department of Medical Laboratory Science and Biotechnology China Medical University Taichung City 404 Taiwan Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung City 807 Taiwan College of Food and Biological Engineering Jimei University Xiamen City 361021 Fujia Province PR China Undergraduate Program Study of Biomedical Engineering Physics Department Airlangga University Surabaya City 60115 Indonesia. Electronic address: davidw@dragon.nchu.edu.tw. State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 PR China. Electronic address: yuanqp@***.

来源：评论

学校读者我要写书评

暂无评论

A Review: Gravitational Water Vortex Power Plant

A Review: Gravitational Water Vortex Power Plant

引用

International Conference on Sustainable Energy engineering and Application (ICSEEA)

作者： Reza Huwae Henny Sudibyo Ridwan Arief Subekti Anjar Susatyo Deni Shidqi Khaerudini Program of Study Magister in Mechanical Engineering Mercu Buana University Jakarta Indonesia Research Centre for Electrical Power and Mechatronics Indonesian Institute of Science (LIPI) Bandung Indonesia Research Centre for Electrical Power and Mechatronics Indonesian Institute of Sciences Bandung Indonesia Universitas Indonesia Gedung F Fakultas MIPA Kampus UI Depok Depok Jawa Barat Indonesia Research Center for Physics Indonesian Institute of Science (LIPI) Serpong Indonesia

ISBN: (数字)9781728188492

ISBN: (纸本)9781728188508

Significant population and economic growth, caused increasing of energy demand. Depletion of fossil fuel moreover coupled by climate change issue that caused by increasing carbon emission, become necessity to continuously encourage achieving renewable energy mix in energy primer. Large potentials of hydro renewable energy source and small utilization of it, micro-hydro and pico-hydro power plant are suitable to develop especially in country side. The research gap in the current turbine application chart is a challenge for Gravitational Water Vortex Power Plant (GWVPP) strong existence in pico-hydro power, besides conventional turbine design has been developed into it. However, development in vortex flow and basin geometry design has a robust design for the past 10 years of research. Researches have been conducted in few countries that proofed GWVPP has less capital investment and low operational and maintenance cost, however the parameter of the GWVPP still need further development since the power output efficiency still low. Since basin opening and outlet diameter are the main parameters to define basin geometry, inlet channel need to do further research. The research will improve the recent gaps; therefore, vortex turbine could be developed accordingly that would result immediate improvements for renewable energy growth in Indonesia through GWVPP.

关键词： Turbines Renewable energy sources Orifices Blades Geometry Picohydro power Water resources

来源：评论

学校读者我要写书评

暂无评论

Limits on Simultaneous and Delayed Optical Emission from Well-localized Fast Radio Bursts

arXiv

引用

arXiv 2022年

作者： Hiramatsu, Daichi Berger, Edo Metzger, Brian D. Gomez, Sebastian Bieryla, Allyson Arcavi, Iair Howell, D. Andrew McKinven, Ryan Tominaga, Nozomu Center for Astrophysics Harvard & Smithsonian 60 Garden Street CambridgeMA02138-1516 United States The NSF AI Institute for Artificial Intelligence and Fundamental Interactions United States Department of Physics Columbia Astrophysics Laboratory Columbia University 538 West 120th Street New YorkNY10027 United States Center for Computational Astrophysics Flatiron Institute New YorkNY10010 United States Space Telescope Science Institute 3700 San Martin Dr BaltimoreMD21218 United States School of Physics and Astronomy Tel Aviv University Tel Aviv69978 Israel CIFAR Azrieli Global Scholars program CIFAR 661 University Ave. TorontoONM5G 1M1 Canada Las Cumbres Observatory 6740 Cortona Drive Suite 102 GoletaCA93117-5575 United States Department of Physics University of California Santa BarbaraCA93106-9530 United States Department of Physics McGill University 3600 rue University MontréalQCH3A 2T8 Canada McGill Space Institute McGill University 3550 rue University MontréalQCH3A 2A7 Canada National Astronomical Observatory of Japan National Institutes of Natural Sciences 2-21-1 Osawa Mitaka Tokyo181-8588 Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Physics Faculty of Science and Engineering Konan University 8-9-1 Okamoto Hyogo Kobe658-8501 Japan The University of Tokyo Institutes for Advanced Study The University of Tokyo 5-1-5 Kashiwanoha Chiba Kashiwa277-8583 Japan

We present the largest compilation to date of optical observations during and following fast radio bursts (FRBs). The data set includes our dedicated simultaneous and follow-up observations, as well as serendipitous archival survey observations, for a sample of 15 well-localized FRBs: eight repeating and seven one-off sources. Our simultaneous (and nearly simultaneous with a 0.4 s delay) optical observations of 13 (1) bursts from the repeating FRB 20220912A provide the deepest such limits to date for any extragalactic FRB, reaching a luminosity limit of νLν 1042 erg s−1 ( 2 ×1041 erg s−1) with 15–400 s exposures;an optical-flux-to-radio-fluence ratio of fopt/Fradio 10−7 ms−1 ( 10−8 ms−1);and flux ratio of fopt/fradio 0.02– 2 × 10−5 ( 10−6) on millisecond to second timescales. These simultaneous limits provide useful constraints in the context of FRB emission models, such as the pulsar magnetosphere and pulsar nebula models. Interpreting all available optical limits in the context of the synchrotron maser model, we find that they constrain the flare energies to 1043–1049 erg (depending on the distances of the various repeating FRBs, with 1039 erg for the Galactic SGR 1935+2154). These limits are generally at least an order of magnitude larger than those inferred from the FRBs themselves, although in the case of FRB 20220912A our simultaneous and rapid followup observations severely restrict the model parameter space. We conclude by exploring the potential of future simultaneous and rapid-response observations with large optical telescopes. © 2022, CC BY.

关键词： Pulsars

来源：评论

学校读者我要写书评

暂无评论

Synthesis and characterization of acrylic resin with ultra high molecular weight polyethylene (UHMWPE) addition as dental prosthetic base

引用

AIP Conference Proceedings 2020年第1期2314卷

作者： Prihartini Widiyanti Siswanto Ika Fauziyatus Silfiana 1Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 2Departement of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia

Acrylic based resins are frequently used in daily dental practice. The most common use of the materials includes denture bases and denture liners. Dental prosthetic base is part of a denture that rests on the supporting network elements where the artificial tooth is placed. The problem with the denture base is the high incidence of dental base fracture due to masticatory pressure. This study is aimed to obtain the best properties of fiber acrylic resin as a dental prosthetic base by adding Ultra High Molecular Weight Polyethylene (UHMWPE). UHMWPE fiber length variation used was 0 mm, 2 mm, 4 mm, 6 mm, and 8 mm with a width of 2 mm fiber. The characterization test was porosity, density, compressive strength and hardness. The porosity test are showed that its best value was 1.695%, while the highest density test was 1.177 g/cm3. The highest compressive strength test was at 67.615 MPa and the highest hardness was 17.1 kgf/mm2. Based on all results,they are showed that the variation of UHMWPE fiber length with a width of 2 mm affected the physical and mechanical properties of dental prosthetic base materials.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Simulation and computational analysis of fire sprinkle bulb activation with variation of liquid and wall thickness

引用

AIP Conference Proceedings 2020年第1期2314卷

作者： Alfian Pramudita Putra Erik Jan Westerman Akif Rahmatillah 1Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 2Department of Biomedical Engineering Faculty of Science and Engineering University of Groningen Groningen The Netherlands

Fire sprinkler is a safety system that is active when fire is detected. It consists of a bulb that holds the water flow and made of glass with liquid inside. The increase of temperature in its environment would expand the volume of the liquid and break the glass which leads to water spray to extinguish the fire. This study aims to model and simulate the fire sprinkler bulb and optimize several parameters related to its activation including the thickness of the bulb, type of liquid and the ratio of air and liquid inside the bulb. The modeling and simulation was performed in COMSOL Multiphysics with variation of wall thickness and liquid inside the bulb. The result showed that the best parameter was the liquid of glycerol, a height of 17.5 mm and a glass thickness of 0.1 mm, this resulted in the air to liquid ratio of 0.0042428 and breaking time of 7.2400s. This result was the fastest breaking time towards several simulations. For future study, several parameters need to be considered in the simulation to minimize the gap between the simulation and the actual condition, such as room condition, and water pressure.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Hydroxyapatite-gelatin-HPMC composite as injectable bone substitute with alendronate variation for osteoporotic bone

引用

AIP Conference Proceedings 2020年第1期2314卷

作者： Novita Sari Alfian Pramudita Putra Siswanto Muhammad Fajar Faliasthiunus Pradipta Dyah Hikmawati 1Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 2Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia

The treatment of bone with osteoporosis could be done by filling the bone defect with Injectable Bone Substitute (IBS). IBS could be functioned as drug delivery system by associating a drug inside the IBS, such as alendronate for osteoporosis case. In this study, IBS has been synthesized and characterized with the alendronate variations. The IBS was synthesized by stirring hydroxyapatite and gelatin 5% (w/v) with a ratio of 45:55. The alendronate was added to the solution with composition of 0%, 5%, 10%, 15% and 20%. The mixture was mixed with 2% (w/v) HPMC. FTIR test results indicated the formation of hydroxyapatite-gelatin bonding (Ca2+--COO−) at wavenumber of 1560.54 cm−1. The acidity test result indicated that the sample had a pH of 7 and was able to remain stable. The IBS could be set in 3 hours and 38 minutes when injected to HA substrate and capable of enveloping the surface of HA substrate. The pore size of the substrate decreased from range of 153 to 625.8 µm into 247.4 to 480.8 µm. The XRD test results indicated that degree of crystallinity decreased from 76.81% to 75.13%. The best alendronate composition in IBS was 10% compared to the mass of hydroxyapatite.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effect of polystyrene addition in characteristics of zinc oxide eugenol dental cement

引用

AIP Conference Proceedings 2020年第1期2314卷

作者： Prihartini Widiyanti Siswanto Betanty Prasetya Sadewi 1Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 2Departement of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia

Zinc oxide-eugenol cements are easier to be tolerated by tissue than other dental materials. They could relieve pain, antibacterial and antiseptic. The cements provide better sealing properties than other type of cements. They used as temporary filling materials, gingival dressings due to their poor mechanic properties. In order to increase the mechanical properties and to reduce solubility of this cement,the additive must be added in the composition of this cement. This study used dental materials, namely zinc oxide eugenol dental cement and polystyrene additives. The sample used in this study was made of the dental cement composition of zinc oxide eugenol cement without the addition of additives polystyrene and with the addition of 2%, 5% and 10% variations of *** results of the tensile strength test and compressive strength test are showed that the larger the percentage of polystyrene additives added to the samples, the greater the two parameters of mechanical strength. This result was in accordance with microstructure characteristic using Scanning Electron Microscopy (SEM) which showed that the greater the percentage of the polystyrene additive, the more subtle the connection between the cement and the teeth.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Black Hole Explorer: Motivation and Vision

arXiv

引用

arXiv 2024年

作者： Johnson, Michael D. Akiyama, Kazunori Baturin, Rebecca Bilyeu, Bryan Blackburn, Lindy Boroson, Don Cárdenas-Avendaño, Alejandro Chael, Andrew Chan, Chi-Kwan Chang, Dominic Cheimets, Peter Chou, Cathy Doeleman, Sheperd S. Farah, Joseph Galison, Peter Gamble, Ronald Gammie, Charles F. Gelles, Zachary Gómez, José L. Gralla, Samuel E. Grimes, Paul Gurvits, Leonid I. Hadar, Shahar Haworth, Kari Hada, Kazuhiro Hecht, Michael H. Honma, Mareki Houston, Janice Hudson, Ben Issaoun, Sara Jia, He Jorstad, Svetlana Kauffmann, Jens Kovalev, Yuri Y. Kurczynski, Peter Lafon, Robert Lupsasca, Alexandru Lehmensiek, Robert Ma, Chung-Pei Marrone, Daniel P. Marscher, Alan P. Melnick, Gary J. Narayan, Ramesh Niinuma, Kotaro Noble, Scott C. Palmer, Eric J. Palumbo, Daniel C.M. Paritsky, Lenny Peretz, Eliad Pesce, Dominic Plavin, Alexander Quataert, Eliot Rana, Hannah Ricarte, Angelo Roelofs, Freek Shtyrkova, Katia Sinclair, Laura C. Small, Jeffrey Kumara, Sridharan Tirupati Srinivasan, Ranjani Strominger, Andrew Tiede, Paul Tong, Edward Wang, Jade Weintroub, Jonathan Wielgus, Maciek Wong, George Zhang, Xinyue Alice Center for Astrophysics | Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States Black Hole Initiative Harvard University 20 Garden Street CambridgeMA02138 United States Haystack Observatory Massachusetts Institute of Technology WestfordMA01886 United States Mizusawa VLBI Observatory National Astronomical Observatory of Japan Iwate023-0861 Japan MIT Lincoln Laboratory LexingtonMA02421 United States Princeton Gravity Initiative Princeton University PrincetonNJ08544 United States Steward Observatory and Department of Astronomy University of Arizona 933 N. Cherry Ave. TucsonAZ85721 United States Data Science Institute University of Arizona 1230 N. Cherry Ave. TucsonAZ85721 United States Program in Applied Mathematics University of Arizona 617 N. Santa Rita TucsonAZ85721 United States Las Cumbres Observatory 6740 Cortona Drive GoletaCA93117-5575 United States Department of Physics University of California Santa BarbaraCA93106-9530 United States Department of History of Science Harvard University CambridgeMA02138 United States Department of Physics Harvard University CambridgeMA02138 United States NASA Goddard Space Flight Center GreenbeltMD20771 United States Departments of Astronomy and of Physics University of Illinois UrbanaIL61801 United States Instituto de Astrofísica de Andalucía CSIC Glorieta de la Astronomía s/n GranadaE-18008 Spain Department of Physics University of Arizona TucsonAZ85719 United States Joint Institute for VLBI ERIC Dwingeloo7991PD Netherlands Faculty of Aerospace Engineering Delft University of Technology Delft2629 HS Netherlands Department of Mathematics and Physics University of Haifa at Oranim Kiryat Tivon3600600 Israel Haifa Research Center for Theoretical Physics and Astrophysics University of Haifa Haifa3498838 Israel 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Astronomy Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-

We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow "photon ring" that is predicted to exist in images of black holes, produced from light that has orbited the black hole before escaping. This discovery will expose universal features of a black hole's spacetime that are distinct from the complex astrophysics of the emitting plasma, allowing the first direct measurements of a supermassive black hole's spin. In addition to studying the properties of the nearby supermassive black holes M87*and Sgr A*, BHEX will measure the properties of dozens of additional supermassive black holes, providing crucial insights into the processes that drive their creation and growth. BHEX will also connect these supermassive black holes to their relativistic jets, elucidating the power source for the brightest and most efficient engines in the universe. BHEX will address fundamental open questions in the physics and astrophysics of black holes that cannot be answered without submillimeter space VLBI. The mission is enabled by recent technological breakthroughs, including the development of ultra-high-speed downlink using laser communications, and it leverages billions of dollars of existing ground infrastructure. We present the motivation for BHEX, its science goals and associated requirements, and the pathway to launch within the next decade. © 2024, CC BY.

关键词： Photons

来源：评论

学校读者我要写书评

暂无评论

Electrochemical performance of sodium titanate nanorods for sodium-ion battery anode applications

引用

AIP Conference Proceedings 2023年第1期2480卷

作者： Zikri Noer Siti Utari Rahayu Hilda Ayu Marlina Fauzi Handoko Susanto Sigit Rahardi Rifki Septawendar Bambang Sunendar Department of Physics Faculty of Mathematics and Natural Sciences Universitas Sumatera Utara Jl. Bioteknologi No.1 Medan Indonesia 20155 Integrated Research Laboratory Universitas Sumatera Utara Jl. Tridarma No. 8 Medan Sumatera Utara Indonesia 20155 Balai Besar Bahan dan Barang Teknik (B4T) Ministry of Industry of Indonesia Jl. Sangkuriang No.14 Bandung Jawa Barat Indonesia 40135 Center for Ceramics Ministry of Industry of Indonesia Jl. Akhmad Yani 392 Bandung Jawa Barat Indonesia 40272 Engineering Physics Study Program Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung Jawa Barat Indonesia 40132

In this study, the electrochemical performance of sodium titanate nanorods for sodium-ion battery anode applications was analyzed. Sodium titanate has been successfully prepared from the titanium (IV) Isopropoxide (TTIP) and sodium chloride (NaCl) precursor assisted by organic templates (ethylene glycol and citric acid) through a simple and hydrothermal template method, sodium titanate has been used to function in sodium-ion battery anodes. Manufacture of sodium titanate which is more environmentally friendly without the use of peroxides. Sodium titanate was initially prepared by mixing a solution of sodium precursor with a solution of titanium precursor at a stoichiometric mole ratio of 1.6: 1. Then, it was preheated through the hydrothermal method at 150°C for 6 hours, then calcined at 800°C for 1 hour in two burning situations which are different, namely reduction and oxidation. The same process is carried out in the synthesis of other samples without preheating treatment. Performance tests were carried out on sodium-ion batteries with calcined sodium titanate as the base ingredient. Preheating and combustion treatments in a reduced atmosphere are the optimum conditions for the formation of sodium titanate which produces sodium titanate type Na2Ti6O13. Galvanostatic charge/discharge performance produces a capacity of 43 mAh after 10 cycles.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：