Potential usage of the magnetron-motion-free mode of one ion confined in a combined trap

The development of suitable models for mechanical fingers, whether they are part of prosthetic device or of a robotic hand, is a powerful tool to predict the behaviour of their components since the early stages of design, especially for underactuated mechanisms. Experimental data can improve the reliability of such models and promote their application to build proper control strategies especially for prosthetic hands. Here, we have developed a multi-jointed model of a mechanical finger. The finger is part of the Federica hand: an underactuated mechanical hand that was conceived for prosthetic purpose. The model accounts for friction phenomena in the finger and it is tuned with experimental data acquired through a digital image correlation device. The model allowed us to write kinematics relations of the phalanges and evaluate finger configurations in relation to the closure velocity. Moreover, it was possible to estimate the tendon force and the work analysis occurring during the closure tasks, both in free mode and in presence of objects.

Download Full-text

Free-mode removal and mode decoupling for simulating general superconducting quantum circuits

Physical Review B ◽

10.1103/physrevb.103.174501 ◽

2021 ◽

Vol 103 (17) ◽

Author(s):

Dawei Ding ◽

Hsiang-Sheng Ku ◽

Yaoyun Shi ◽

Hui-Hai Zhao

Keyword(s):

Quantum Circuits ◽

Free Mode ◽

Superconducting Quantum Circuits

Download Full-text

Effect of Cover Plate on the Ballistic Performance of Ceramic Armor

Materials ◽

10.3390/ma14010001 ◽

2020 ◽

Vol 14 (1) ◽

pp. 1

Author(s):

Miao Sun ◽

Wuxiong Cao ◽

Diqi Hu ◽

Nana Zhang ◽

Runqiang Chi

Keyword(s):

Plate Thickness ◽

Cover Plate ◽

Ballistic Performance ◽

Transition Velocity ◽

Free Mode ◽

Long Rod ◽

Lower Limits ◽

Insight Into ◽

Velocity Region ◽

Cover Plates

The interface defeat and dwell can effectively improve the ballistic performance of ceramic armors under high velocity impact of long rod projectiles. Confinement conditions along both axial and radial directions of ceramic armors can affect these behaviors. With the aim of giving an insight into the effect of cover plate thickness and connection mode of cover plates with confining tubes on these behaviors, numerical simulations were performed in which the confined silicon carbide (SiC) targets with cover plates were impacted by tungsten rods. The pressure on the surfaces of SiC targets with fixed cover plates are compared to that with free cover plates, showing that the plates fixed with the confining tubes can produce higher pressure by way of wedging. With the increase in cover plate thickness, the dwell duration of the tungsten rods on the ceramic interface gradually grows. In addition, the upper and lower limits of transition impact velocities for the SiC targets with cover plates in different connection modes (i.e., free or fixed) were obtained and analyzed. The results show that the increase rate of the transition velocity region for the cover plate with the fixed-mode is relatively stable and lower than with the free-mode. On this basis, the fixed cover plate contributes higher ballistic performances to the SiC target than the free cover plate. It is also noteworthy that the size of transition velocity region does not enlarge linearly with the increase in cover plate thickness due to the slow growth of the upper limit. Accordingly, thickness thresholds exist, which are 5 mm and 6 mm for the fixed and free cover plates, respectively. Considering the ballistic performance and economy, the cover plate with the thickness ranging from 3 mm to 5 mm, i.e., 1.5~2.5 times of the tungsten rod diameter, is ideal for the structural dimensions in this paper.

Download Full-text

Tracking the Magnetron Motion in FT-ICR Mass Spectrometry

Journal of the American Society for Mass Spectrometry ◽

10.1007/s13361-015-1148-4 ◽

2015 ◽

Vol 26 (8) ◽

pp. 1349-1366 ◽

Cited By ~ 10

Author(s):

Roland Jertz ◽

Jochen Friedrich ◽

Claudia Kriete ◽

Evgeny N. Nikolaev ◽

Gökhan Baykut

Keyword(s):

Mass Spectrometry ◽

Magnetron Motion ◽

Ft Icr

Download Full-text

A horizontally polarizing liquid trap enhances the tabanid-capturing efficiency of the classic canopy trap

Bulletin of Entomological Research ◽

10.1017/s0007485313000357 ◽

2013 ◽

Vol 103 (6) ◽

pp. 665-674 ◽

Cited By ~ 17

Author(s):

Á. Egri ◽

M. Blahó ◽

D. Száz ◽

G. Kriska ◽

J. Majer ◽

...

Keyword(s):

Field Experiments ◽

Polarized Light ◽

Field Tests ◽

Male And Female ◽

Host Seeking ◽

Blood Sucking ◽

Liquid Trap ◽

Black Sphere ◽

Combined Trap

AbstractHost-seeking female tabanid flies, that need mammalian blood for the development of their eggs, can be captured by the classic canopy trap with an elevated shiny black sphere as a luring visual target. The design of more efficient tabanid traps is important for stock-breeders to control tabanids, since these blood-sucking insects can cause severe problems for livestock, especially for horse- and cattle-keepers: reduced meat/milk production in cattle farms, horses cannot be ridden, decreased quality of hides due to biting scars. We show here that male and female tabanids can be caught by a novel, weather-proof liquid-filled black tray laid on the ground, because the strongly and horizontally polarized light reflected from the black liquid surface attracts water-seeking polarotactic tabanids. We performed field experiments to reveal the ideal elevation of the liquid trap and to compare the tabanid-capturing efficiency of three different traps: (1) the classic canopy trap, (2) the new polarization liquid trap, and (3) the combination of the two traps. In field tests, we showed that the combined trap captures 2.4–8.2 times more tabanids than the canopy trap alone. The reason for the larger efficiency of the combined trap is that it captures simultaneously the host-seeking female and the water-seeking male and female tabanids. We suggest supplementing the traditional canopy trap with the new liquid trap in order to enhance the tabanid-capturing efficiency.

Download Full-text

Activated ion electron capture dissociation (AI ECD) of proteins: Synchronization of infrared and electron irradiation with ion magnetron motion

Journal of the American Society for Mass Spectrometry ◽

10.1016/j.jasms.2008.12.015 ◽

2009 ◽

Vol 20 (5) ◽

pp. 763-771 ◽

Cited By ~ 27

Author(s):

Victor A. Mikhailov ◽

Helen J. Cooper

Keyword(s):

Electron Capture ◽

Electron Capture Dissociation ◽

Electron Irradiation ◽

Magnetron Motion

Download Full-text

Rola aplikacji dydaktycznych w nauczaniu zdalnym

e-mentor ◽

10.15219/em88.1500 ◽

2021 ◽

Vol 88 (1) ◽

pp. 30-36

Author(s):

Lidia Pokrzycka ◽

Keyword(s):

Public Relations ◽

Doctoral Students ◽

Teaching Methods ◽

English Language ◽

Doctoral Studies ◽

Internet Applications ◽

E Learning ◽

Ict Tools ◽

Free Mode ◽

Journalism Students

In times of the coronavirus pandemic, distance learning has become mandatory for higher education. That requires using a variety of teaching methods, both synchronous and asynchronous, and their common feature is the use of ICT tools. The aim of the article is to present applications used for making the remote lectures more attractive and engaging for journalism students of graduate and doctoral studies and foreigners from the English-language Doctoral School of Social Sciences of UMCS. The author also reflects on students' appreciation of such solutions initially during blended learning and then e-learning classes. That is based on the survey conducted among 30 doctoral students who carried out their lectures using internet applications. The study confirmed that the applications motivate students to work systematically and additionally to use them during their apprenticeships or while working in various companies with marketing, advertising, or public relations profile. Students also appreciate asynchronous classes and the fact that the use of applications allows them to repeat the most important pieces of information in a stress-free mode. Graphical applications make even tricky topics easier to remember while enabling students to illustrate the theory with practical elements.

Download Full-text

Biosensors for the Determination of SARS-CoV-2 Virus and Diagnosis of COVID-19 Infection

International Journal of Molecular Sciences ◽

10.3390/ijms23020666 ◽

2022 ◽

Vol 23 (2) ◽

pp. 666

Author(s):

Maryia Drobysh ◽

Almira Ramanaviciene ◽

Roman Viter ◽

Chien-Fu Chen ◽

Urte Samukaite-Bubniene ◽

...

Keyword(s):

Current Trend ◽

Analytical Signal ◽

Diagnostic Methods ◽

Detection Methods ◽

Label Free ◽

Free Mode ◽

Rna Hybridisation ◽

Antigen Antibody ◽

Affinity Interaction

Monitoring and tracking infection is required in order to reduce the spread of the coronavirus disease 2019 (COVID-19), induced by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To achieve this goal, the development and deployment of quick, accurate, and sensitive diagnostic methods are necessary. The determination of the SARS-CoV-2 virus is performed by biosensing devices, which vary according to detection methods and the biomarkers which are inducing/providing an analytical signal. RNA hybridisation, antigen-antibody affinity interaction, and a variety of other biological reactions are commonly used to generate analytical signals that can be precisely detected using electrochemical, electrochemiluminescence, optical, and other methodologies and transducers. Electrochemical biosensors, in particular, correspond to the current trend of bioanalytical process acceleration and simplification. Immunosensors are based on the determination of antigen-antibody interaction, which on some occasions can be determined in a label-free mode with sufficient sensitivity.

Download Full-text