Hardware Design of a New Instrument to Control the Heat Pulse and Measure the Temperature of Stratum

2012 ◽  
Vol 614-615 ◽  
pp. 1422-1426
Author(s):  
Cang Xu Feng ◽  
Zhen Shui Liu ◽  
Xiao Cui
Keyword(s):  
Sampling Rate ◽  
Data Communication ◽  
Heat Pulse ◽  
Heating Time ◽  
Geothermal Heat ◽  
Communication Interface ◽  
New Instrument ◽  
Before And After ◽  
Temperature Measure ◽  
Duty Time

In this work, we report the design of a new instrument including one heat pulse circuit and three temperature measure circuits. Heat pulse control circuit can control the heating time of heater strip. The heating power is 0.5W and the duty time of every heat pulse is 8s. Three temperature measure circuits can measure the change of stratum’s temperature before and after accurately. The temperature resolution is 0.001°C, precision is 0.01°C and sampling rate is 1 Hz. The instrument can save the temperature data for every measure process. It is also provided with the data communication interface. The data saved in the instrument can export to computer through the interface. The instrument can measure the stratum’s temperature easily and reliably. The instrument will play a role in the studies of hydrogeology and environmental geology besides the application of Shallow Geothermal heat

scholarly journals Shaping and Centering Ability, Cyclic Fatigue Resistance and Fractographic Analysis of Three Thermally Treated NiTi Endodontic Instrument Systems

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5823
Author(s):  
Saulius Drukteinis ◽  
Vytaute Peciuliene ◽  
Ruta Bendinskaite ◽  
Vilma Brukiene ◽  
Rasmute Maneliene ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Cyclic Fatigue ◽  
Fractographic Analysis ◽  
Significance Level ◽  
Root Canals ◽  
Topographic Features ◽  
New Instrument ◽  
Before And After ◽  
Number Of Cycles ◽  
Thermally Treated

The better understanding of the clinically important behavioral features of new instrument systems has an important significance for the clinical endodontics. This study aimed to investigate the shaping and centering ability as well as cyclic fatigue resistance of HyFlex CM (CM), HyFlex EDM (EDM) and EdgeFile (EF) thermally treated nickel–titanium (NiTi) endodontic instrument systems. Sixty curved root canals of the mesial roots of mandibular molars were randomly assigned into three groups (n = 20) and shaped using CM, EDM and EF files up to the size 40 and taper 04 of the instruments. µCT scanning of the specimens before and after preparation was performed and the morphometric 2D and 3D parameters were evaluated in the apical, middle and coronal thirds of root canals. In each group, 40.04 instruments (n = 20) were subjected to the cyclic fatigue resistance test in artificial root canals at 37 °C temperature until fractures occurred, and the number of cycles to failure (NCF) was calculated. The fractographic analysis was performed using a scanning electron microscope, evaluating topographic features and surface profiles of the separated instruments. The one-way analysis of variance with post hoc Tuckey’s test was used for statistical analysis of the data; the significance level was set at 5%. All systems prepared the comparable percentage of root canal surface with the similar magnitude of canal transportation in all root thirds (p > 0.05), but demonstrated significantly different resistance to cyclic fatigue (p < 0.05). The most resistant to fracture was EF, followed by EDM and CM. The length of the fractured fragments was not significantly different between the groups, and fractographic analysis by SEM detected the typical topographic features of separated thermally treated NiTi instrument surfaces.

Use of a Wheel Aesthesiometer for Testing Sensibility in the Hand Results in patients with carpal tunnel syndrome

1986 ◽  
Vol 11 (2) ◽  
pp. 182-186
Author(s):  
D. R. MARSH
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Surgical Decompression ◽  
Spatial Discrimination ◽  
Sensory Impairment ◽  
Discrimination Test ◽  
New Instrument ◽  
Before And After ◽  
Tunnel Syndrome

Tests of spatial discrimination were performed on the hands of patients with carpal tunnel syndrome, before and after surgical decompression. Impairment of sensibility and its recovery after treatment were better demonstrated by a new instrument, the wheel aesthesiometer, than by the moving two-point discrimination test. The psychophysics of the new test and the nature of the sensory impairment in carpal tunnel syndrome are discussed.

scholarly journals DBac: deadline based data collection using CSMA/CD and earliest deadline first (EDF) scheduling in wireless sensor network

2018 ◽  
Vol 7 (3) ◽  
pp. 1956
Author(s):  
A Felix Arokya Jose ◽  
C Anand Deva Durai ◽  
S John Livingston
Keyword(s):  
Wireless Sensor Network ◽  
Data Collection ◽  
Sensor Network ◽  
Sampling Rate ◽  
Data Communication ◽  
Base Station ◽  
Wireless Sensor ◽  
Earliest Deadline First ◽  
Delivery Ratio ◽  
Earliest Deadline

Wireless Sensor Network (WSN) has an enormous scope of utilizations in detecting different parameters such as temperature, pressure, sound, pollution, etc. The sensed data in each sensor node are a valuable one. To communicate the information to the base station for further processing, a lot of strategies are available. Each sensor senses the data in different sampling rate depending upon the sudden raise in the sensing parameters. Data communication to the base station is very critical due to the dynamicity of the environment during the stipulated time.The sensed data should reach the base station before the data becomes invalid due to the violation of the deadline. In order to avoid deadline violation so that the sensed data becomes useless, this paper proposing a novel data collection algorithm based on the popular Earliest Deadline First (EDF) scheduling algorithm. The various simulation parameters are taken into account to verify the performance of the proposed method and the result shows that it achieves high throughput, low delay, high Packet Delivery Ratio (PDR) and low energy consumption.  

A Control System in Satellite Navigation and Communication Terminal

2014 ◽  
Vol 513-517 ◽  
pp. 2888-2892
Author(s):  
Zheng Qun Hu ◽  
Guo Xiang Ai ◽  
Li Rong Zhang ◽  
Chao Hu
Keyword(s):  
Control System ◽  
Communication System ◽  
Satellite Communication ◽  
Data Communication ◽  
Satellite Navigation ◽  
Quality Data ◽  
Communication Interface ◽  
Voice Communication ◽  
Good Communication ◽  
Set Up

For the needs of a satellite navigation and communication system, we design and implement a terminal control system in the integration of navigation and communication system in this paper. The control system consists of CPU controller, GPS positioning module, smart finding and alignment satellite module, transmit/receive baseband, RF module, voice module and other functional modules, which has navigation and communication function. Satellite communication includes voice communication and data communication. The voice communication interface is operated conveniently, which using I/Q quadrature BPSK modulation to set up satellite links easily. It has a good communication quality. Data communication using the bidirectional answer mode to make success rate close to 100% in data upward to the communication center station, which is well to meet the needs in data upward.

Interpersonal Behavior Constructs: A Revised Approach to Defining Dyadic Interaction Styles

1975 ◽  
Vol 36 (3) ◽  
pp. 835-846 ◽  
Author(s):  
Kate L. Kogan ◽  
Betty N. Gordon
Keyword(s):  
Therapeutic Intervention ◽  
Behavioral Change ◽  
Clinical Utility ◽  
Interpersonal Behavior ◽  
Dyadic Interaction ◽  
Interaction Styles ◽  
New Approaches ◽  
New Instrument ◽  
Before And After ◽  
Research Studies

Methods for analyzing mother-child interactions which have been used in clinical and research studies over a 10-yr. period have been revised in the interests of greater economy and more precise clinical utility. This paper reports data to document the comparability of the old and new approaches, the reliability of the method when used by several observers, and the usefulness of the new instrument in delineating behavioral change before and after therapeutic intervention.

scholarly journals Geothermal heating and episodic cold-seawater intrusions into an isolated ridge-flank basin near the Mid-Atlantic Ridge

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Keir Becker ◽  
Richard E. Thomson ◽  
Earl E. Davis ◽  
Heinrich Villinger ◽  
C. Geoffrey Wheat
Keyword(s):  
Bottom Water ◽  
Ocean Bottom ◽  
Geothermal Heat ◽  
Bottom Water Temperature ◽  
Geothermal Heating ◽  
Mid Ocean Ridge ◽  
Before And After ◽  
Bottom Waters ◽  
Mid Atlantic Ridge ◽  
Ocean Ridge

AbstractSix-year records of ocean bottom water temperatures at two locations in an isolated, sedimented deep-water (∼4500 m) basin on the western flank of the mid-Atlantic Ridge reveal long periods (months to >1 year) of slow temperature rises punctuated by more rapid (∼1 month) cooling events. The temperature rises are consistent with a combination of gradual heating by the geothermal flux through the basin and by diapycnal mixing, while the sharper cooling events indicate displacement of heated bottom waters by incursions of cold, dense bottom water over the deepest part of the sill bounding the basin. Profiles of bottom water temperature, salinity, and oxygen content collected just before and after a cooling event show a distinct change in the water mass suggestive of an incursion of diluted Antarctic Bottom Water from the west. Our results reveal details of a mechanism for the transfer of geothermal heat and bottom water renewal that may be common on mid-ocean ridge flanks.

Sign in / Sign up

Export Citation Format

Share Document