http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Sudheesh Kannan,Nethra S Surhonne,Chethan Kumar R,Kavitha B,Devika Rani D,Raghavendra Rao R S 대한마취통증의학회 2018 Korean Journal of Anesthesiology Vol.71 No.2
Background: Bilateral superficial cervical plexus block (BSCPB) provides good postoperative analgesia, but its effect on anesthetic consumption is unknown. This study evaluated the effects of BSCPB on sevoflurane consumption during thyroid surgery. Methods: Fifty patients were randomly allocated into groups A and B of 25 each in this prospective double-blind study. Group A received BSCPB with 20 ml 0.25% bupivacaine, whereas group B received 20 ml saline immediately before entropy-guided general anesthesia. Intraoperative hemodynamic parameters, end-tidal sevoflurane concentration, minimum alveolar concentration, and sevoflurane consumption were recorded. Postoperative pain was assessed using a visual analog scale, and the time of the first request for analgesia was noted. All side effects were recorded. Results: Demographics were comparable. Mean sevoflurane consumption [for 30 min: group A = 7.2 (1.1) ml, group B = 8.8 (2.0) ml, P = 0.001; for 60 min: group A = 13.5 (1.7) ml, group B = 16.5 (3.9) ml, P = 0.002] and mean end-tidal sevoflurane concentration [for 30 min: group A = 1.2% (0.2%), group B = 1.4% (0.2%), P = 0.008; for 60 min: group A = 1.2% (0.1%), group B = 1.4% (0.2%), P = 0.010] were significantly lower in group A. Patients in group A had a longer duration of analgesia [361.6 (79.5) min vs. 151.0 (60.2) min, P < 0.001] compared to those in group B. Conclusions: Preinduction BSCPB during thyroid surgery significantly reduced sevoflurane consumption and increased the duration of postoperative analgesia.
Study of chemical bath deposited Cu(In,Al)Se2 thin films as an alternate candidate for solar cells
B. Kavitha,M. Dhanam 한양대학교 세라믹연구소 2009 Journal of Ceramic Processing Research Vol.10 No.5
Cu(InAl)Se2 (CIAS) thin films of different thicknesses were prepared by a chemical bath deposition technique(CBD) onto wellcleaned substrates and the thicknesses of the deposited films were determined by a gravimetric technique. The films are investigated with X-ray diffraction, scanning electron microscopy and optical spectroscopy. The structural characterization was carried out by X-ray diffraction which confirms the polycrystalline nature of the films with a tetragonal structure. SEM analysis of the films enabled the conclusion that the prepared films are uniform, smooth and polycrystalline. From the transmittance spectra the type of transition and band gaps of the films were estimated. From the results of the structural and optical analysis, CIAS has been identified as an alternate solar cell absorber. Cu(InAl)Se2 (CIAS) thin films of different thicknesses were prepared by a chemical bath deposition technique(CBD) onto wellcleaned substrates and the thicknesses of the deposited films were determined by a gravimetric technique. The films are investigated with X-ray diffraction, scanning electron microscopy and optical spectroscopy. The structural characterization was carried out by X-ray diffraction which confirms the polycrystalline nature of the films with a tetragonal structure. SEM analysis of the films enabled the conclusion that the prepared films are uniform, smooth and polycrystalline. From the transmittance spectra the type of transition and band gaps of the films were estimated. From the results of the structural and optical analysis, CIAS has been identified as an alternate solar cell absorber.
B. Kavitha,M. Dhanam 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.1
Films of Cu(InAl)Se2 were deposited onto glass substrates by SILAR (successive ionic layer adsorption and reaction) method. All the deposited films were found to be polycrystalline in nature exhibiting the chalcopyrite structure with the crystallite orientation along (112), (220/204) and (116/312) directions. The photocurrent was found to increase with increase in film thickness and also with increase of light intensity. Photocurrent spectra showed a peak related to the band-to-band transition. The spectral response of Cu(InAl)Se2 thin films was studied by allowing the radiation to pass through a series of interference filters in the wavelength range 300 to 1200 nm. Films of higher thickness exhibited higher photosensitivity while lower thickness films exhibited moderate photosensitivity. Cu(InAl)Se2-based solar cells with different types of buffer layers such as CdS, CdS:Cu, CdS:In were fabricated. The current and voltage were measured using an optical power meter and an electrometer and the fabricated solar cells were illuminated using 100 mW/cm2 white light under AM1 conditions.
K. Vinaya, R. Kavitha,C. S. Ananda Kumar,S. B. Benaka Prasad,S. Chandrappa,S. A. Deepak,S. Nanjunda Swamy,S. Umesha,K. S. Rangappa 대한약학회 2009 Archives of Pharmacal Research Vol.32 No.1
Several 1-benzhydryl-sulfonyl-4-(3-(piperidin-4-yl)propyl)piperidine derivatives 8(a-j) were prepared by the treatment of substituted benzhydryl chlorides with 4-(3-(piperidin-4-yl)propyl)piperidine followed by N-sulfonation with sulfonyl chlorides in the presence of dry methylene dichloride and triethyl amine. The synthesized compounds were characterized by 1H-NMR, IR, and elemental analysis. All the synthesized compounds were evaluated in vitro for their efficacy as antimicrobial agents by artificial inoculation technique against standard strains of two important bacterial viz., Xanthomonas axonopodis pv. vesicatoria and Ralstonia solanacearum as well as and two fungal pathogens namely Alternaria solani and Fusarium solani of tomato plants. We have briefly investigated the structure-activity relation studies and reveal that the nature of substitutions on benzhydryl ring and sulfonamide ring influences the antibacterial activity. Among the synthesized new compounds 8b, 8d, 8g, 8h, 8i, and 8j were showed significant potent antimicrobial activities compared to the standard drugs Chloramphenicol, Mancozeb.
EXISTENCE OF SOLUTIONS FOR IMPULSIVE NONLINEAR DIFFERENTIAL EQUATIONS WITH NONLOCAL CONDITIONS
B. SELVARAJ,M. MALLIKA ARJUNAN,V. KAVITHA 한국산업응용수학회 2009 Journal of the Korean Society for Industrial and A Vol.13 No.3
In this article, we study the existence and uniqueness of mild and classical solutions for a nonlinear impulsive differential equation with nonlocal conditions u'(t) = Au(t) + f(t, u(t), Tu(t), Su(t)), 0 ≤ t ≤ T?, t ≠ ti, u(0) + g(u) = uu(0) + g(u) = u?, △u(ti) = Ii(u(ti)), i = 1, 2,... p, 0 < t₁ < t₂ < … < tp < T?, in a Banach space X, where A is the infinitesimal generator of a C? semigroup, g constitutes a nonlocal conditions, and △u(ti) = u(t?i ) - u(t?i ) represents an impulsive conditions.
Chinthamani B.,Kavitha S.,Bhuvaneswari N. S.,Shanker N. R. 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.5
Induction motor is used for different applications in industries such as grinding, milling, mining and automation. Induction motor performance degrades over time due to continuous operation, over load, transient unbalanced supply voltage and current. Hence, induction motor performance and efficiency are evaluated through measurement of motor torque. The torque measurement using various sensors such as acoustic, mems-vibration, strain gauge, in line sensors, never provides the inaccurate results due to contact type sensors and improper mounting of sensor on the motor. Moreover, existing methods never provides inaccurate torque measurement for different types of motor duty cycle such as continuous duty, intermittent periodic duties, short-time duty and continuous operation with intermittent load. In this paper, novel non-contact method measures torque with Dual-function ultra-wide band (UWB) (DFR) Radar sensor. DFR acquires polarized signal reflected from air gap of motor magnetic flux. Moreover, air gap magnetic flux radiation through motor ventilator is directly proportional to motor torque. In this paper, motor torque is measured through air gap magnetic flux radiation and DFR sensor. The electromagnetic waves from DFR is reflected by the air gap magnetic flux emitted from motor and the reflected waves are polarized. The reflected DFR sensor signal from air gap magnetic flux has high polarity charge and resonance. From received polarized signal, Instantaneous Frequency (IF) is obtained through Multi-Synchro Squeezing Transform (MSST) algorithm. The motor torque is measured with IF and Gaussian regression algorithm. Torque spikes in Induction motor is analyzed during frequent change in heavy, low load, and induced transient Torque prediction through MSST IF frequency and Gaussian Regression is compared with Torque predicted through different transform such as Discrete Wavelet Transform (DWT), Stationary Wavelet Transform (SWT), Dyadic Wavelet Transform (DyWT). The MSST based torque measurement provides 96% of accuracy, when compared with traditional strain gauge torque measuring instrument. Initial review.
Maheshwari A.,Hemalatha B.,Lakshmi G.,Kavitha A.,Tata Ravi Kumar,Taqui Syed Noeman,Al Obaid Sami,Alharbi Sulaiman Ali,Raghavan S. S. 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.3
The diabetes is a disease that can become a serious disorder for a lifetime. It kills more than a million people every year. This disease can afect anyone. Diabetes occurs when the body is unable to process all the sugar (glucose) in the bloodstream; its complications can move to heart issues, caress, vision loss, and kidney stoppage and leg amputation problems. Many people with diabetes inject their body daily and feel that their work is done. Diabetes is an incurable disease because of poor health. The diabetes be able to be divided keen on2 types. The type-1 diabetes is hereditary. It is not easy to cure. People with type 2 diabetes can greatly reduce their risk of developing diabetes by following a proper, proper lifestyle. In addition it helps reduce the risk of diabetes. The proposed model of managing diabetics explains this disease as a specifc lifestyle. The existence of an efective system for the treatment of diabetes, according to the tasks currently set out, provides for the achievement of goals. The proposed edge based machine learning approach was achieved 85% of results compared with the Blood glucose level prediction, Adaptive multivariable closed-loop control, neural model of blood glucose level and Detecting Undiagnosed Diabetes.