Results 1 to 10 of about 730,516 (311)

Design of an Electromagnetic Band Gap Shield for a Ku-Band VSAT Transmitter Power Amplifier [PDF]

فصلنامه علوم و فناوری فضایی, 2021
In this paper, a shielding box is designed for a Ku-band VSAT transmitter power amplifier based on an electromagnetic band gap structure. The proposed structure, is a bed of nails on the inner surface of the top wall of the box.
Mahmoud Talafi Noghani, Peiman Aliparast
doaj   +1 more source

Enamel fibulae in Kabarda-Beshtau, 1st to 3rd century [PDF]

Материалы по археологии и истории античного и средневекового Причерноморья, 2022
The article considers seven bronze fibulae decorated with enamels. They have been discovered in the late 19th century, in the 1970s, and in the early 21th century in the foothill area of the Central Caucasus (Kabarda-Beshtau). Fasteners No.
Prokopenko, Yu.A.
doaj   +1 more source

Adding a Seat at the Table: A Case Study of the Provider's Perspective on Integrating Community Health Workers at Provider Practices in California

Frontiers in Public Health, 2021
Blue Shield of California's Community Health Advocate Program was created to support whole person-health needs by helping individuals of all socio-economic statuses navigate and access community resources, social services, and medical systems.
Courtney A. Paulson, Eva M. Durazo, Leigh D. Purry, Arianne E. Covington, Bruce Alan Bob, Rebecca A. Peters, Steven Torchia, Baylis Beard, Lucy E. McDermott, Amy Lerner, Joycelyn Smart-Sanchez, Mahima Ashok, Jacqueline Ejuwa, Shannon Cosgrove   +13 more
doaj   +1 more source

The Prototype Test on Sealing Capacity and Mechanical Behavior of the Underground Segmental Lining in a Low Vacuum Environment

Geofluids, 2023
The super-speed tube transport (SSTT) system is called the fifth traffic mode internationally. One of the critical technical problems for the design of SSTT system is the sealing reliability in vacuum tube structures. In this paper, an experimental study
Qianqian Lv, Chuigang Zeng, Fengyuan Li, Kui Chen, Long Shi, Ruixiang Chen   +5 more
doaj   +1 more source

Delayed emergencies: The composition and magnitude of non‐respiratory emergency department visits during the COVID‐19 pandemic

Journal of the American College of Emergency Physicians Open, 2021
Importance COVID‐19 has been associated with excess mortality among patients not diagnosed with COVID‐19, suggesting disruption of acute health care provision may play a role.
Ari B. Friedman, Deidre Barfield, Guy David, Thomas Diller, Candace Gunnarson, Miao Liu, Benjamin V. Vicidomina, Ruthann Zhang, Yuan Zhang, Somesh C. Nigam   +9 more
doaj   +1 more source

Coriolis Force Sliding Mode Control Method for the Rotary Motion of the Central Rigid Body-Flexible Cantilever Beam System in TBM

Advances in Civil Engineering, 2021
Beam slab structure is often encountered in a complex tunnel boring machine. Beam slab structure is subject to dynamic load, which is easy to cause fatigue damage and affect its service life.
Chuanlu Zhou, Long Qin, Ming Chen, Jingxiang Zhang   +3 more
doaj   +1 more source

Influences of Microwave Irradiation on the Physicomechanical Properties and Cerchar Abrasivity Index of Rocks

Geofluids, 2023
The research is aimed at exploring the influences of microwave irradiation on the physicomechanical properties and Cerchar abrasivity index (CAI) of rocks.
Gaoming Lu, Cong Ding, Kairong Hong, Jianjun Zhou, Haining Liu, Changbin Yan   +5 more
doaj   +1 more source

Model Test of TBM Tunnel Crossing Large Dip Angle Fault Zone under High In Situ Stress

Geofluids, 2022
In order to study the effect of fracture zone on tunnel stability under high ground stress and to reveal the disaster mechanism of fracture zone surrounding rock compressor, the TBM tunnel of Fragrant Furnace Mountain Tunnel in the F12 fracture zone in ...
Liming Wang, Kairong Hong, Yongwei Quan, Hailei Zhao, Xiangbo Zhao, Zhenxing Yang, Zhenliang Zhou   +6 more
doaj   +1 more source

Mechanism evolution mechanism of active support process of two-leg shield

Meitan kexue jishu, 2023
In view of the unclear mechanism evolution of the two-leg shield during the active support process, the planar kinematic model of two-leg shield is established, the necessary conditions for the mechanism evolution of the shield are obtained, and the ...
Xiangpeng HU, Xinhua LIU
doaj   +1 more source

Shield synthesis [PDF]

Formal Methods in System Design, 2017
Shield synthesis is an approach to enforce safety properties at runtime. A shield monitors the system and corrects any erroneous output values instantaneously. The shield deviates from the given outputs as little as it can and recovers to hand back control to the system as soon as possible.
Bettina Könighofer, Mohammed Alshiekh, Roderick Bloem, Laura Humphrey, Robert Könighofer, Ufuk Topcu, Chao Wang   +6 more
openaire   +4 more sources