Results 111 to 120 of about 15,341 (227)

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

A Study of Electro-hydraulic Spark

Journal of the Japan Society of Precision Engineering, 1965
Summarizing results on recent experimental and analytical investigations for hydrospark forming reported hitherto, in this paper, mechanism of generation of output energy by hydrospark, process of increase of output for the same electrical discharge energy by using explosive powder between electrodes, method of increase of forming efficiency by ...
Tomoichi INOUE, Masami OMORI
openaire   +2 more sources

Non-Inertial Dynamic Analysis of 3-SPS/U Parallel Platform by Screw Theory and Kane’s Method

Actuators
This paper presents an improved method for the non-inertial dynamic analysis of the 3-SPS/U parallel platform (3-SPS/U PM), employing the screw theory and Kane’s method, where S, P, and U denote spherical, prismatic, and universal joints, respectively ...
Tianzhu Wang, Haifeng Yang, Qiang Zhang, Jinhui Fang, Zhenyu Lai, Ruilin Feng, Jianhua Wei, Zhanfeng Wang   +7 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Mitigating VFA accumulation in hydrogen‐assisted anaerobic digestion through MEC integration

Journal of Chemical Technology &Biotechnology, Volume 101, Issue 4, Page 915-924, April 2026.
Abstract BACKGROUND Biological hydrogenotrophic methanization is a promising method to improve biogas quality in anaerobic digestion systems. However, hydrogen‐assisted anaerobic digesters (AD‐H2) are prone to volatile fatty acid (VFA) accumulation and process instability.
Afrooz Bayat, Ricardo Bello‐Mendoza
wiley   +1 more source

Анализ задач оптимизации систем автоматического регулирования паровой турбины [PDF]

, 2007
Рассмотрены вопросы оптимизации электрогидравлических систем регулирования паровой турбины К-1000-60/1500. Приведены модели системы регулирования частоты вращения.
Климчук, В. А., Северин, Валерий Петрович   +1 more
core  

Continuous‐Flow Photocatalytic Degradation of Glyphosate and Aminomethylphosphonic Acid Under Simulated Sunlight with TiO2‐Coated Poly(vinylidene fluoride) Membrane

Advanced Functional Materials, Volume 36, Issue 21, 12 March 2026.
Glyphosate (GLY) and its primary metabolite, aminomethylphosphonic acid (AMPA), are photodegraded using a poly(vinylidene fluoride) membrane with immobilized titanium dioxide (PVDF‐TiO2) in a continuous flow‐through operation under solar light. At optimized conditions, the PVDF‐TiO2 membrane achieved 95% GLY and 80% AMPA removal with •O2− as the ...
Phuong B. Trinh, Siqi Liu, Nurul F. Himma, Béla Fiser, Andrea I. Schäfer   +4 more
wiley   +1 more source

Stable Switching Control Strategy of the Support Pressure and Velocity of Shield Machine Gripper Shoes

Shock and Vibration, 2019
An electro-hydraulic servo position and pressure compound control method was investigated considering the working principle of a hydraulic stepping motor of a shield machine gripper shoe and its practical working characteristics in the supporting process.
Nannan Liu, Jishen Peng, Liye Song, Pinhe Wang, Kun Zhang   +4 more
doaj   +1 more source

Defect‐Healed Au/rGO Coating for the Corrosion Protection of PEMFC Bipolar Plates

Advanced Materials Technologies, Volume 11, Issue 5, 6 March 2026.
 A defect‐healed gold/reduced graphene oxide (Au/rGO) coating is presented for stainless steel bipolar plates in polymer electrolyte membrane fuel cells. Gold nanoparticles nucleate at graphene oxide defects, blocking corrosive ion penetration and enhancing corrosion resistance, thereby ensuring durable fuel cell operation.
Jinmyeong Seo, Jungjoon Park, Soobin Park, Qing Wang, Bayaraa Sukhbaatar, Sanghwa Yoon, Bongyoung Yoo   +6 more
wiley   +1 more source

Analysis of influencing factors on vibration characteristics of electro-hydraulic vibration cutting system. [PDF]

Sci Rep, 2023
Xie M, Meng Q, Zhang W, Wang H, Guo J, Liu Y, Yan W, Li B.   +7 more
europepmc   +1 more source