LED's optimum duty cycle in heart rate and oxygen saturation level combinedly measurement device for low power consumption

Author(s):  
Umme Salma ◽  
Md. Jannatul Ferdous ◽  
Mohammad Rafiqul Alam ◽  
Tilottoma Barua ◽  
Esrat Jahan
2019 ◽  
Vol 10 (4) ◽  
pp. 2800-2804 ◽  
Author(s):  
Alice Jeba J ◽  
Senthil Kumar S ◽  
Shivaprakash sosale

Preterm infants are babies who are delivered before the completion of 37 weeks gestation period. They are born with immature functioning of the brain. In  Neonatal Intensive Care Unit (NICU), these infants receives many environmental stimuli, and their comfort will be disturbed. These various sensory stimulus received in NICU influence the functional and neurodevelopmental outcome of these infants and also their quality of life. So this study was intended to evaluate the axillary temperature, heart rate, respiratory rate and oxygen saturation level of these infants prior to nesting and after nesting at the 60th minute. Forty preterm infants who fulfilled the criteria of selection were included in the study by simple random sampling and segregated into case and control groups by blocked randomization. Data was collected and recorded. The temperature was recorded by a digital thermometer, respiratory rate was counted by the number of times the infants' chest rises, heart rate and oxygen saturation readings from the pulse oximeter. The result of the study showed that there was statistically significant effect of nesting at 60th minute, temperature (t=5.03966,p<0.05), respiratory rate(t= -2.13,p<0.05) and heart rate (t=-2.59766,p<0.05). But the effect was not significant on oxygen saturation level (t=1.2,p=0.238).  Hence this study result supports the use of nesting in NICU.


Author(s):  
Alexander Fayer

This document discusses operation of desalination system permanently extracting water from hydrogel draw agent by specially selected wicks. Due to its peculiarity the system combines advantages of both forward and reverse osmosis approaches such as, low power consumption, passive process of a freshwater extraction, continuous duty cycle and scaling possibility. While in modern systems an energy consumption of seawater desalination reaches of about 3 kWh/m 3, including pre-filtering and ancillaries [1], the same parameter for the specific system expected to be as low as for local fresh water supplyi.e., 0.2 kWh/m 3


2021 ◽  
Vol 8 (11) ◽  
pp. 1815
Author(s):  
Akshi Sharma ◽  
Rakesh Sharma ◽  
Mangla Sood ◽  
Pancham Kumar

Background: Lumbar puncture (LP) is one of the most commonly encountered painful procedure in paediatric medicine. Research has shown that neonates too experience pain from noxious stimuli that can be more intense than what is experienced by an adult, and so have the right to receive safe, efficient and effective pain management. Objective was to determine efficacy of topical eutectic mixture of local anesthetics (EMLA) in alleviating pain associated with lumbar puncture among newborns admitted to sick newborn care unit (SNCU).Methods: The study was a one-year tertiary care teaching hospital-based randomised comparative double blinded trial among 42 neonates aged 32 weeks or more admitted to SNCU and required a diagnostic lumbar puncture, randomly assigned to one of two groups. Half hour before the procedure, 1 g of topical EMLA cream was applied to LP site in intervention group versus placebo in other group. At different stages, the heart rate, transcutaneous oxygen saturation level, and total behaviour score were captured on a video camera and rated using the neonatal facial coding system.Results: EMLA dramatically lowers pain sensitivity when compared to placebo. Total behavioural score means±standard deviation (SD) at the moment of needle insertion (EMLA: 1.05±1.24; placebo: 2.71±1.76, p≤0.001) and post procedural 5 minute later was (EMLA: 0.05±0.22; placebo: 0.81±0.92, p≤0.01). Similarly, oxygen saturation level when needle was in spinal place (EMLA: 96.76±2.45; placebo: 94.29±3.62, p=0.01) and post procedural 1 hour later was (EMLA: 98.81±1.94; placebo: 97.48±2.18, p=0.04). The heart rate of all newborns in both groups was greater than it was at baseline, although the difference was not significant.Conclusions: EMLA is an effective agent in reducing pain associated with LP among newborns.


2014 ◽  
Vol 513-517 ◽  
pp. 2884-2887 ◽  
Author(s):  
Tan Cheng Lu ◽  
Peng Liu ◽  
Xiang Gao ◽  
Qi Yong Lu

This paper design a portable ECG monitor based on mobile phone. Using the single-lead heart rate monitor analog front-end of AD8232 chip produced by ADI co. Ltd., the monitor can measure human ECG signal and heart rate with only two electrode pads placed on chest, and display the ECG signal on the mobile phone via Bluetooth communication in real time. It also can simply measure the heart rate by touching the two electrodes of the monitor directly. The system has many functions like ECG signal analysis, heart rate counting, arrhythmia detection, signal playback, leads off detection, fast recovery ECG. The result shows that the portable ECG monitor is low cost, low power consumption, small size and easy to carry, etc.


2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.


2016 ◽  
Vol 136 (11) ◽  
pp. 1555-1566 ◽  
Author(s):  
Jun Fujiwara ◽  
Hiroshi Harada ◽  
Takuya Kawata ◽  
Kentaro Sakamoto ◽  
Sota Tsuchiya ◽  
...  

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