scholarly journals Скачкообразные квантовые фазовые переходы в вихревой системе и динамическая комплексная магнитная проницаемость двойниковых YBa-=SUB=-2-=/SUB=-Cu-=SUB=-3-=/SUB=-O-=SUB=-7-x-=/SUB=- высокотемпературных сверхпроводников

2022 ◽  
Vol 64 (2) ◽  
pp. 155
Author(s):  
Х.Р. Ростами
Keyword(s):  
Critical Fields ◽  
Frequency Method ◽  
Vortex System ◽  
Local Character ◽  
Critical Magnetic Fields ◽  
Josephson Medium ◽  
Complex Magnetic Permeability ◽  
Bragg Glass ◽  
Vortex Crystal ◽  
Stepwise Decomposition

A nonlocal high-frequency method for measuring the dynamic complex magnetic permeability with enhanced spatial resolution is developed to simultaneously determine the bulk and local character of stepwise penetration of a magnetic flux through twin boundaries (TBs) into a YBa2Cu3O7-x HTSC sample during its stepwise decomposition into twins. By the values of fields corresponding to the regions of steps, the thermodynamic first critical magnetic fields are determined: the penetration of a flux into a sample – a Josephson medium; the development of a critical state in the Josephson medium; the penetration of a flux into twins; and the values of the critical fields of phase transitions in the vortex system of the HTSC sample, such as the melting fields of a vortex crystal, the formation of a superconducting glass state in the sample, and the transition to the vortex glass and Bragg glass states.

MICROWAVE ABSORPTION STUDIES ON V-B GROUP METAL OXIDES DOPED Bi(Pb)-2223 CERAMIC SUPERCONDUCTOR

1996 ◽  
Vol 10 (03n05) ◽  
pp. 133-143
Author(s):  
P. SUBHASH ◽  
G. NARSINGA RAO ◽  
D. SURESH BABU
Keyword(s):  
Josephson Junction ◽  
Microwave Absorption ◽  
Phase Variation ◽  
Signal Amplitude ◽  
Temperature Dependent ◽  
Critical Fields ◽  
Low Field ◽  
Josephson Medium ◽  
Absorption Studies ◽  
Current Densities

Microwave absorption studies have been carried out on samples Bi 1.6 Pb 0.3 V 0.1 Sr 2· Ca 2 Cu 3 O y, Bi 1.6 Pb 0.3 Nb 0.1 Sr 2 Ca 2 Cu 3 O y, and Bi 1.6 Pb 0.3 Ta 0.1 Sr 2 Ca 2 Cu 3 O y. DC Microwave absorption studies of all the samples showed the presence of single 2223 phase. Variation of Low Field Microwave Absorption (LFMA) signal amplitude of these samples showed definite peaks at 95 K, 83 K and 90 K respectively. The temperature dependent average Josephson loop diameter was estimated for all these samples. The experimental data was analyzed on the basis of Josephson Medium Model. From this model, the temperature dependent junction penetration depth λ j , Josephson junction upper and lower critical fields H C1j and H C2j and Josephson junction critical current densities J Cj were estimated.

LOWER CRITICAL MAGNETIC FIELDS OF Y-Ba-Cu-O SUPERCONDUCTOR IN HIGH TEMPERATURE REGION

1987 ◽  
Vol 01 (07n08) ◽  
pp. 309-314 ◽  
Author(s):  
DING SHIYING ◽  
YAN JIALIE ◽  
SHI KEXING ◽  
YU ZHENG ◽  
CHENG JUN ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetic Fields ◽  
Liquid Nitrogen ◽  
Temperature Region ◽  
Liquid Nitrogen Temperature ◽  
High Temperature Region ◽  
Critical Fields ◽  
Critical Magnetic Fields ◽  
Small Fields

We have measured the magnetizations and determined the dependence of lower critical magnetic fields on temperature for high Tc Y-Ba-Cu-O Superconductor in liquid nitrogen temperature region. The structure examinations and the measurements of virgin magnetization in small fields show that our samples are made up of granules coupled to each other. Therefore the measured lower critical fields are attributed to the values at which flux enters the granulas.

INVESTIGATION OF THE DUAL-FREQUENCY METHOD FOR REMOTE SENSING OF SOLID AEROSOLS

2010 ◽  
Vol 69 (13) ◽  
pp. 1205-1219
Author(s):  
O. A. Voitovych ◽  
A. M. Linkova ◽  
G. I. Khlopov
Keyword(s):  
Remote Sensing ◽  
Dual Frequency ◽  
Frequency Method

PROMOSI KESEHATAN DALAM PENCEGAHAN HIPERTENSI DAN PERILAKU MEROKOK DI DUSUN COMBONGAN YOGYAKARTA

2019 ◽  
Vol 24 (4) ◽  
pp. 879
Author(s):  
Tri Wahyuni Sukesi
Keyword(s):  
Health Promotion ◽  
Smoking Behavior ◽  
Good Knowledge ◽  
Frequency Method ◽  
Reading Material ◽  
Prevention Of Hypertension ◽  
And Control

AbstrakHipertensi dan rokok merupakan hasil analisis prioritas masalah dengan menggunakan metode USGF (Urgency, Seriousness, Growth, dan Frequency) di dusun Combongan Yogyakarta. Berdasarkan hasil prioritas masalah ini maka diambil suatu upaya pencegahan dan pengendalian dengan melakukan promosi kesehatan pencegahan hipertensi dan perilaku merokok. Kegiatan ini bertujuan untuk meningkatkan pengetahuan warga tentang hipertensi dan bahaya merokok. Harapannya dengan pengetahuan yang baik dapat meningkatkan perilaku yang baik juga dalam pencegahan hipertensi dan perilaku merokok. Metode yang digunakan adalah dengan penyuluhan secara langsung kepada warga dengan menggunakan powerpoint dan juga membagikan leaflet sebagai bahan bacaan. Hasil yang diperoleh adalah kegiatan penyuluhan berjalan dengan baik dan warga peserta penyuluhan aktif bertanya dan mengikuti kegiatan penyuluhan sampai selesai.Penyuluhan dilakukan dengan interaktif antara narasumber dengan warga peserta penyuluhan.Kata kunci: Hipertensi, rokok, penyuluhan.AbstractHypertension and cigarettes are the result of priority analysis of problems using the USGF (Urgency, Seriousness, Growth, and Frequency) method in the Combongan Yogyakarta. Based on the priority results of this problem, an effort to prevent and control is taken by conducting health promotion to prevent hypertension and smoking behavior. This activity aims to increase people's knowledge about hypertension and the dangers of smoking. With good knowledge can improve good behavior also in the prevention of hypertension and smoking behavior. The method used is counseling directly to residents by using powerpoint and also distributing leaflets as reading material. The results obtained were counseling activities went well and the counseling participants actively asked and participated in the extension activities until they were finished. Counseling was carried out interactively between informants and community members.Keywords: Hypertension, cigarettes, counseling.

TRIPLEPR-MAC: A Triple Queue Priority Based Medium Access Control Protocol for Wireless Sensor Network

2019 ◽  
Vol 09 ◽  
Author(s):  
Rinkuben N. Patel ◽  
Nirav V. Bhatt
Keyword(s):  
Sensor Network ◽  
Data Transmission ◽  
Energy Efficient ◽  
Power Efficiency ◽  
Mac Protocol ◽  
Medium Access Control Protocol ◽  
Quality Factors ◽  
Medium Access ◽  
Critical Fields ◽  
Storage Unit

Background: WSN is a network of smart tiny electromechanical devices named as sensors. Sensors perform various tasks like sensing the environment as per its range, transmit the data using transmission units, store the data in the storage unit and perform an action based on captured data. As they are installed in an unfriendly environment, to recharge the sensors are not possible every time which leads to a limited lifetime of a network. To enhance the life of a sensor network, the network required energy-efficient protocols. Various energy-efficient MAC protocols are developed by Research community, but very few of them are integrated with the priority-based environment which performs the priority-based data transmission. Another challenge of WSN is, most of the WSN areas are delay-sensitive because it is implemented in critical fields like military, disaster management, and health monitoring. Energy, Delay, and throughput are major quality factors that affect the sensor network. Objective: In this paper, the aim is to design and develop a MAC Protocol for a field like the military where the system requires energy efficiency and priority-based data transmission. Method: In the proposed model, the cluster-based network with priority queues are formed that can achieve higher power efficiency and less delay for sensitive data. Results: In this research simulation of Proposed MAC, TMAC and SMAC are done with different numbers of nodes, same inter-packet intervals, and variant inter-packet intervals. Based on the script simulation, result graphs are generated. Conclusion: The proposed work achieves greater lifetime compared to TMAC and SMAC using priority-based data transmission.

Sign in / Sign up

Export Citation Format

Share Document