Results 11 to 20 of about 143,695 (268)

Frequencies for Radio Astronomy [PDF]

Nature, 1970
At present the scope of research in radio astronomy is limited by the allocation of frequencies, some of which have to be shared with other radio services. When the International Telecommunications Union reconsiders all frequency allocations next year, astronomers are hoping for an improvement.
openaire   +2 more sources

Construction of optical system for an atomic clock-beyond atomic fountain

Frontiers in Physics, 2022
We demonstrate the construction of the optical system in the atomic clock-beyond atomic fountain based on 87Rb atom. The optical system includes a high-stability laser system and an optical lattice.
Xiumei Wang, Xiumei Wang, Jin He, Yifei Wang, Yunjia Wang, Wenming Wang, Weili Wang, Shiguang Li, Xi Zhu, Guodong Liu, Shuo Liu, Ye Wang, Liang Wang, Yaxuan Liu, Tongmin Yang, Chunyan Cao, Yiqun Wei, Yutao Yue, Guoqing Hu, Zhenfeng Liu, Yimin Pan, Lianshan Gao   +21 more
doaj   +1 more source

Enhancement of Fungal Enzyme Production by Radio-Frequency Electromagnetic Fields

Journal of Fungi, 2022
Enzyme production by microorganisms on an industrial scale has demonstrated technical bottlenecks, such as low efficiency in enzyme expression and extracellular secretion.
Mayura Veerana, Nan-Nan Yu, Si-Jin Bae, Ikhwan Kim, Eun-Seong Kim, Wirinthip Ketya, Hak-Yong Lee, Nam-Young Kim, Gyungsoon Park   +8 more
doaj   +1 more source

Point spread function decoupling in computational fluorescence microscopy

Light: Science & Applications
Computational fluorescence microscopy constantly breaks through imaging performance through advanced optical modulation technologies; however, conventional theoretical modeling and experimental measurement approaches are challenging to meet the demand ...
Ziwei Wang, Wanyu Gu, Shaolei Xu, Yupei Miao, Zewei Cai, Xiang Peng, Xiaoli Liu, Liwei Liu, Qifeng Yu   +8 more
doaj   +1 more source

Size-Prior-Oriented Target Detection and Recognition for Automotive SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Automotive SAR target detection, which involves interpreting scenes or distinguishing different objects from SAR images, is a fundamental and critical problem in intelligent driving. An increasing number of methods have been proposed in airbone-SAR image
Zekang Fan, Bo Zhao, Cuiqi Si, Fengming Huang, Qiuchen Liu, Lei Huang   +5 more
doaj   +1 more source

RFID – Radio Frequency Identification

Informatik-Spektrum, 2008
Der Radio Frequency Identification (RFID) wurde sowohl in der wissenschaftlichen als auch in der popularwissenschaftlichen Literatur in der letzten Zeit viel Aufmerksamkeit eingeraumt. Es handelt sich dabei um eine Technologie, mit der Objekte der Realwelt uber Funkwellen identifiziert werden konnen.
Melski, Adam, Thoroe, Lars, Schumann, Matthias   +2 more
openaire   +2 more sources

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan, Michael Abele, Calogero Virgone, Michaela Kuhlen, Ricardo Lopez‐Almarez, Tal Ben‐Ami, Ewa Bien, Maja Cesen, Malgorzata A. Krawczyk, Andrea Ferrari, Gianni Bisogno, Yves Reguerre, Dominik T. Schneider, Louise Galmiche, Jorg Fuchs, Sarah Braungart, Bilgehan Yalcin, Ines B. Brecht, Daniel Orbach   +18 more
wiley   +1 more source

A universal and versatile terahertz field manipulation mechanism by manipulating near-infrared phases with a dislocation scheme

Nature Communications
This paper presents a universal and versatile terahertz (THz) wavefront-phase manipulation by manipulating the two-dimensional phases of the near-infrared pulses.
Qinggang Lin, Fu Feng, Xuanke Zeng, Yi Cai, Wenzhao He, Congying Wang, Kaipeng Wu, Xiaowei Lu, Hongmei Zhong, Shixiang Xu, Jingzhen Li, Xiaocong Yuan   +11 more
doaj   +1 more source

RFSoC-FPGA Realization of a Code-Multiplexed Digital Receiver (CMDR) Using 1-ADC/Quad-Channel

IEEE Journal of Microwaves
A 4-channel code-multiplexed digital receiver is presented for multiple-input-multiple-output (MIMO) applications targeting 5G millimeter-wave (mm-Wave) communications.
Kefayet Ullah, Satheesh Bojja Venkatakrishnan, John L. Volakis   +2 more
doaj   +1 more source

Bridging the Gap in Neuroblastoma Care: Consensus‐Based Statements With Recommendations for Improved Patient and Caregiver Experiences

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma's complex, heterogeneous biology poses significant diagnostic and therapeutic challenges, often requiring caregivers to absorb complex information and participate in time‐sensitive decisions. However, caregivers often feel unprepared to evaluate options.
Vickie Buenger, Joseph Bauer, Jennifer Diamond, Maggie Fader, Shae Hansen, Jacqueline M. Kraveka, Johanna Schoen, Amber Shearer, Dena Sherwood   +8 more
wiley   +1 more source