Large Pyroelectric Current Generation Induced by Droplet Cooling

2021 ◽  
Author(s):  
Wanying Zhang ◽  
Modi Jiang ◽  
Yanming Liu ◽  
Weizheng Cheng ◽  
Yang Li ◽  
...  
Keyword(s):  
Current Generation ◽  
Pyroelectric Current

Seti Figure of Merit

1997 ◽  
Vol 161 ◽  
pp. 711-717 ◽  
Author(s):  
John W. Dreher ◽  
D. Kent Cullers
Keyword(s):  
Figure Of Merit ◽  
Qualitative Difference ◽  
Current Generation ◽  
Detection Range ◽  
Sky Surveys ◽  
Independent Observations ◽  
Good For

AbstractWe develop a figure of merit for SETI observations which is anexplicitfunction of the EIRP of the transmitters, which allows us to treat sky surveys and targeted searches on the same footing. For each EIRP, we calculate the product of terms measuring the number of stars within detection range, the range of frequencies searched, and the number of independent observations for each star. For a given set of SETI observations, the result is a graph of merit versus transmitter EIRP. We apply this technique to several completed and ongoing SETI programs. The results provide a quantitative confirmation of the expected qualitative difference between sky surveys and targeted searches: the Project Phoenix targeted search is good for finding transmitters in the 109to 1014W range, while the sky surveys do their best at higher powers. Current generation optical SETI is not yet competitive with microwave SETI.

COMPETENCE APPROACH – PROJECTIONS IN EDUCATION

2020 ◽  
Vol 11 (1) ◽  
pp. 62-66
Author(s):  
Krasimira Dimitrova ◽  
Keyword(s):  
Learning Process ◽  
Education System ◽  
Theoretical Research ◽  
Current Generation ◽  
Positive Effect

The current generation is facing a number of challenges related to their future. The education system is looking for adequate ways to change and adaptively focus the learning process. The application of a competency approach in education has a positive effect. The article attempts to explain the essence of the competency approach and its projections in the preparation, education and upbringing of children and students. Basic elements that are leading in organizing the learning process are outlined. Concepts necessary for subsequent theoretical research and methodological formulations are defined.

PELOPOR PATRIOTISME NUSANTARA BRIGJEND HAJI HASSAN BASRY SEBAGAI PENDIDIKAN KARAKTER GENERASI MUDA

2020 ◽  
Author(s):  
JUNAIDI
Keyword(s):  
Meaning Of Life ◽  
Current Generation ◽  
Younger Generation

Indonesia has many fighters who a’im to free them selves from the heroes who are willing to sacrifice peace, and freedom from invaders from other countries, so that the shock makes the physical revolutionary figure seize, fight or peace, led by one of the brave leaders Brigadier General Haji Hassan Basry. Hassan Basry from South Kalimantan. Struggling to defend the position of independence, based on the influence of Dutch troops. The Kalimantan Chief General led a deception that the Dutch could not know, so the attack was successful. Success is expressed and introduced through learning so that one forms the patriotism of the archipelago based on, attitudes, character embodied in the values of struggle, which are developed in the younger generation through education. Thus education builds the character contained in it, influences the meaning of life, in the nature of the daily habits of the younger generation, through direct or indirect moral messages, thereby slowly forming the traits to further uphold the nation formed by younger roles, current generation and later.

A fractal model for current generation in porous electrodes

2021 ◽  
Vol 880 ◽  
pp. 114883
Author(s):  
Alex Elías-Zúñiga ◽  
Luis Manuel Palacios-Pineda ◽  
Isaac H. Jiménez-Cedeño ◽  
Oscar Martínez-Romero ◽  
Daniel Olvera-Trejo
Keyword(s):  
Fractal Model ◽  
Porous Electrodes ◽  
Current Generation

scholarly journals Cybersickness in current-generation virtual reality head-mounted displays: systematic review and outlook

2021 ◽  
Author(s):  
Polona Caserman ◽  
Augusto Garcia-Agundez ◽  
Alvar Gámez Zerban ◽  
Stefan Göbel
Keyword(s):  
Systematic Review ◽  
Virtual Reality ◽  
Meta Analysis ◽  
Subjective Evaluation ◽  
Future Research ◽  
Current Generation ◽  
Research Areas ◽  
Head Mounted Displays ◽  
Skin Response ◽  
Golden Standard

AbstractCybersickness (CS) is a term used to refer to symptoms, such as nausea, headache, and dizziness that users experience during or after virtual reality immersion. Initially discovered in flight simulators, commercial virtual reality (VR) head-mounted displays (HMD) of the current generation also seem to cause CS, albeit in a different manner and severity. The goal of this work is to summarize recent literature on CS with modern HMDs, to determine the specificities and profile of immersive VR-caused CS, and to provide an outlook for future research areas. A systematic review was performed on the databases IEEE Xplore, PubMed, ACM, and Scopus from 2013 to 2019 and 49 publications were selected. A summarized text states how different VR HMDs impact CS, how the nature of movement in VR HMDs contributes to CS, and how we can use biosensors to detect CS. The results of the meta-analysis show that although current-generation VR HMDs cause significantly less CS ($$p<0.001$$ p < 0.001 ), some symptoms remain as intense. Further results show that the nature of movement and, in particular, sensory mismatch as well as perceived motion have been the leading cause of CS. We suggest an outlook on future research, including the use of galvanic skin response to evaluate CS in combination with the golden standard (Simulator Sickness Questionnaire, SSQ) as well as an update on the subjective evaluation scores of the SSQ.

scholarly journals Hybrid Reference Current Generation Theory for Solar Fed UPFC System

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1527
Author(s):  
R. Senthil Kumar ◽  
K. Mohana Sundaram ◽  
K. S. Tamilselvan
Keyword(s):  
Neural Network ◽  
Power Factor ◽  
Reactive Power ◽  
Voltage Source ◽  
Unity Power Factor ◽  
Current Generation ◽  
Load Voltage ◽  
Reference Current Generation ◽  
Source Current

The extensive usage of power electronic components creates harmonics in the voltage and current, because of which, the quality of delivered power gets affected. Therefore, it is essential to improve the quality of power, as we reveal in this paper. The problems of load voltage, source current, and power factors are mitigated by utilizing the unified power flow controller (UPFC), in which a combination of series and shunt converters are combined through a DC-link capacitor. To retain the link voltage and to maximize the delivered power, a PV module is introduced with a high gain converter, named the switched clamped diode boost (SCDB) converter, in which the grey wolf optimization (GWO) algorithm is instigated for tracking the maximum power. To retain the link-voltage of the capacitor, the artificial neural network (ANN) is implemented. A proper control of UPFC is highly essential, which is achieved by the reference current generation with the aid of a hybrid algorithm. A genetic algorithm, hybridized with the radial basis function neural network (RBFNN), is utilized for the generation of a switching sequence, and the generated pulse has been given to both the series and shunt converters through the PWM generator. Thus, the source current and load voltage harmonics are mitigated with reactive power compensation, which results in attaining a unity power factor. The projected methodology is simulated by MATLAB and it is perceived that the total harmonic distortion (THD) of 0.84% is attained, with almost a unity power factor, and this is validated with FPGA Spartan 6E hardware.

scholarly journals Colour Me Blue: The History and the Biotechnological Potential of Pyocyanin

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 927
Author(s):  
Thiago Gonçalves ◽  
Ulrich Vasconcelos
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Therapy ◽  
Electric Current ◽  
Antimicrobial Therapy ◽  
Blue Colour ◽  
Current Generation ◽  
Biotechnological Potential ◽  
Avant Garde ◽  
New Horizons ◽  
The Subject

Pyocyanin was the first natural phenazine described. The molecule is synthesized by about 95% of the strains of Pseudomonas aeruginosa. From discovery up to now, pyocyanin has been characterised by a very rich and avant-garde history, which includes its use in antimicrobial therapy, even before the discovery of penicillin opened the era of antibiotic therapy, as well as its use in electric current generation. Exhibiting an exuberant blue colour and being easy to obtain, this pigment is the subject of the present review, aiming to narrate its history as well as to unveil its mechanisms and suggest new horizons for applications in different areas of engineering, biology and biotechnology.

Pure valley current generation in graphene nanostructure

2021 ◽  
Vol 386 ◽  
pp. 126990
Author(s):  
Qingtian Zhang ◽  
Kwok Sum Chan
Keyword(s):  
Current Generation ◽  
Graphene Nanostructure

Early vascular responses to ultrathin biodegradable polymer sirolimus-eluting stent for the treatment of st-elevation myocardial infarction

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
Y Oishi ◽  
T Shinke ◽  
H Tanaka ◽  
K Ogura ◽  
K Arai ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Clinical Outcomes ◽  
Antiplatelet Therapy ◽  
St Elevation Myocardial Infarction ◽  
Current Generation ◽  
Vascular Responses ◽  
Post Procedure ◽  
St Elevation ◽  
Sirolimus Eluting Stent

Abstract Background Recent clinical study suggests newer-generation drug-eluting stents (DES) that combine ultrathin strut and nano-coating with biodegradable polymers sirolimus-eluting stent (BP-SES) could improve long-term clinical outcomes in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) over current generation DES. However, safety profiles in very early phase have not been systematically addressed. Objective and method We exploratory investigate early vascular response following BP-SES implantation in patients with STEMI to reveal mechanism of the favorable clinical outcomes in recent studies using frequency domain-optical coherence tomography (FD-OCT). Consecutive twenty patients with STEMI who underwent FD-OCT immediately after primary PCI and were eligible for follow-up FD-OCT at 2 weeks after implantation were enrolled between June 2018 and November 2019. Results Twenty patients (age 62.7±11.3 years, male 85.0%) were enrolled with frequencies of hypertension (45.0%), diabetes mellitus (35.0%), dyslipidemia (55.0%) and smoking (80.0%). Aspiration catheter were used in all patients, and 1.13±0.34 stents were used. Only one patient (5.0%) received chronic antiplatelet therapy with aspirin prior to the onset of STEMI. All patients started to receive prasugrel as thienopyridine from this event and continued dual antiplatelet therapy for 2 weeks. The percentage of uncovered struts significantly decreased from post-procedure to 2W follow-up (69±18% post-procedure versus 30±11% at 2W follow up, p&lt;0.0001). Malapposed struts also decreased (5.6±5.7% post-procedure versus0.9±1.2% at 2W follow up, p&lt;0.0001).The average protrusion area of athero-thrombotic burden numerically decreased (0.37±0.19 at post-procedure versus 0.34±0.14 mm2 at 2W follow up, p=0.19) and its volume showed similar tendency (10.60±6.40 at post-procedure versus 9.36±5.14 mm3 at 2W follow up, p=0.19). Conclusion(s) This study firstly elucidated very early vascular responses following ultrathin strut BP-SES implantation in STEMI patients, showing early progression of strut coverage and resolution of athero-thrombotic materials. This technology may have a potential to overcome the current generation DESs in this clinical setting. Thrombus, uncovered and malapposed struts Funding Acknowledgement Type of funding source: None

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