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Correlation between blood glucose and hematocrit: A new estimation methodology
Pawan K. Tiwari,남학현,손영수 한국바이오칩학회 2012 BioChip Journal Vol.6 No.3
The estimation of hematocrit in the enzy me and mediator configured blood glucose monitoring electrochemical strips is proposed conceptualizing an innovative data mining methodology. This methodology demonstrate assimilating the peak current(IP), and time(tP) to achieve the peak current of the amperometry; as a coordinate point in the indigenously nomenclated HMM(Hematocrit Monitoring Method) IP-tP Array. The array consists of onstructing a matrix(9×7 matrix) that could be extended to a matrix of appreciable size within the computational limitations. The computational results of hematocrit estimation are precise in the experimental range of 10-50% hematocrit volume. A mathematical model for the transient current emanating from an lectrochemical strip is also formulated corroborating our experimental results.
Raman Threshold Intensity of an Electromagnetic Wave in Cluster Plasmas
Pawan K. Tiwari,Chinook Mok,Chang-Mo Ryu,Changhwan Lim,Sung-Ki Hong 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6
An electromagnetic wave instantly converts an atomic cluster into a microsphere plasma, resulting in a displacement of the electron and the ion clouds. The electron and the Coulomb pressure cause an atomic cluster to explode and expand hydrodynamically. A nonlinear theory has been formulated to investigate the threshold intensity in cluster plasmas. A laser intensity exceeding 10¹² W/㎠ and a pulse duration of less than 1 picoseconds causes the onset of a stimulated Raman backscattered wave. An electromagnetic wave instantly converts an atomic cluster into a microsphere plasma, resulting in a displacement of the electron and the ion clouds. The electron and the Coulomb pressure cause an atomic cluster to explode and expand hydrodynamically. A nonlinear theory has been formulated to investigate the threshold intensity in cluster plasmas. A laser intensity exceeding 10¹² W/㎠ and a pulse duration of less than 1 picoseconds causes the onset of a stimulated Raman backscattered wave.
Cascade of Complications Following Carotid Body Tumor Excision
Pawan K Garg,Sarbesh Tiwari,Tushar S Ghosh,Surendra Patel,Ankur Sharma,Pushpinder S Khera 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.3
Carotid body tumor excision can lead to various complications including vascular injury and pseudoaneurysm formation. Here we describe a case of carotid body tumor excision followed by series of complications including pseudoaneurysm formation, failure of primary surgical repair, carotid stump syndrome following parent artery occlusion, and persistent hypotension.
Delayed Spontaneous Thrombosis of Neglected Direct Carotid-Cavernous Fistula: A Case Report
Tiwari Sarbesh,Garg Pawan Kumar,Khera Pushpinder Singh,K.B Santosh Babu,Yadav Taruna,Sureka Binit 대한신경중재치료의학회 2020 Neurointervention Vol.15 No.2
Direct carotid-cavernous fistula (CCF) refers to direct communication between the cavernous portion of the internal carotid artery (ICA) and the cavernous sinus due to rent in the ICA, most commonly secondary to trauma. These are generally high-flow fistula and rarely resolve spontaneously. We report a case of a young male who developed features of direct CCF after trauma, was denied any treatment for 4 years, and then presented with spontaneous thrombosis of the fistula and a residual large pseudoaneurysm of the cavernous segment of the right ICA, which was subsequently managed with parent vessel occlusion.
Control of ion energy distribution in low-pressure and triple-frequency capacitive discharge
Lee, S H,Tiwari, Pawan K,Lee, J K IOP Pub ; American Institute of Physics 2009 Plasma sources science & technology Vol.18 No.2
<P>One-dimensional particle-in-cell Monte Carlo collision (PIC-MCC) simulations of low-pressure (10 mTorr) argon plasmas sustained by a triple-frequency (1, 30 and 120 MHz) source in symmetrical current-driven and voltage-driven capacitively coupled plasma reactors are carried out. We concluded that the effective current, the effective voltage and the effective frequency are helpful in explaining the physics of triple-frequency capacitively coupled plasma sources (CCPs) alike single-frequency CCPs. The rf discharge parameters such as the ion energy distribution function (IEDF), the sheath length, the plasma potential and the powers dissipated by electrons and ions can be expressed as the effective frequency and the effective current density (or effective voltage). The analytical model of the IEDF for triple-frequency CCPs in the high-frequency regime is developed. The analytical calculations of the IEDF in the high-frequency regime through the effective frequency visualized in this paper are compared with the simulation results of the IEDF calculated from the 1D PIC-MCC model. The ion energy width and the average ion energy of the IEDF are controlled by the effective frequency, which is expressed as a function of the current density (or voltage) and frequency ratios of the triple-frequency source. The evolution of the effective frequency with the current density or voltage ratio of three frequency sources is different depending on the mode of operating source, which is either voltage or current. The effective frequency in voltage-driven CCPs is 2–10 times higher than that of current-driven CCPs at the same ratio of current density and voltage. As a result, the current-driven CCPs is more desirable than the voltage-driven CCPs from the aspect of independent control of ion flux and ion bombardment energy because the ion energy width increases with decreasing effective frequency.</P>