Digital Controlled Oscillator Design with Novel 3 Transistors XOR Gate

Manoj Kumar,Sandeep K. Arya,Sujata Pandey 보안공학연구지원센터 2012 International Journal of Smart Home Vol.6 No.1

Unplanned 30-day readmission rates in patients undergoing endo-urological surgeries for upper urinary tract calculi

Manoj Kumar,Siddharth Pandey,Ajay Aggarwal,Deepanshu Sharma,Gaurav Garg,Samarth Agarwal,Ashish Sharma,Satyanarayan Sankhwar 대한비뇨의학회 2018 Investigative and Clinical Urology Vol.59 No.5

Purpose: To see the 30-day unplanned readmission rates in patients underdoing endo-urological surgeries for upper urinary tract calculi we conducted this retrospective study at King George's Medical University, Lucknow, India. Unplanned readmissions not only add to healthcare costs but also are bothersome for the patients. There are many studies on 30-day unplanned readmissions in general surgical patients. Although similar studies have been done in certain urological procedures, no study has reported readmission rates or its risk factors in patients undergoing surgeries for upper urinary tract calculi. Materials and Methods: We retrospectively reviewed our prospectively maintained database from 1st January 2009 to 31st December 2017, for the patients who underwent endo-urological procedures for upper urinary tract calculi and identified the patients who were re-admitted within 30 days of discharge. Results: Out of the total 3,209 patients undergoing endo-urological procedures for upper urinary tract calculi 56 were re-admitted. The readmission rate was 1.74% over the study period. The most common etiology for readmission was sepsis followed by hematuria. The significant risk factors for readmission in bivariate analysis included male gender, age >65 years, current smoking, chronic obstructive pulmonary disease, diabetes mellitus, bleeding disorder, prior cardiac disease, and American Society of Anesthesiologists (ASA) class ≥3. In multivariate risk adjusted logistic regression analysis ASA class ≥3 was the only independent risk factor for readmission. Conclusions: The readmission rates in endo-urological procedures for urolithiasis are less compared to other procedures. ASA class ≥3 is the most important independent predictor of unplanned 30-day readmissions.

A Statistical Approach to Examine the Impact of Various Meteorological Parameters on Pan Evaporation

Pandey, Swati,Kumar, Manoj,Chakraborty, Soubhik,Mahanti, N.C. The Korean Statistical Society 2009 응용통계연구 Vol.22 No.3

Evaporation from surface water bodies is influenced by a number of meteorological parameters. The rate of evaporation is primarily controlled by incoming solar radiation, air and water temperature and wind speed and relative humidity. In the present study, influence of weekly meteorological variables such as air temperature, relative humidity, bright sunshine hours, wind speed, wind velocity, rainfall on rate of evaporation has been examined using 35 years(1971-2005) of meteorological data. Statistical analysis was carried out employing linear regression models. The developed regression models were tested for goodness of fit, multicollinearity along with normality test and constant variance test. These regression models were subsequently validated using the observed and predicted parameter estimates with the meteorological data of the year 2005. Further these models were checked with time order sequence of residual plots to identify the trend of the scatter plot and then new standardized regression models were developed using standardized equations. The highest significant positive correlation was observed between pan evaporation and maximum air temperature. Mean air temperature and wind velocity have highly significant influence on pan evaporation whereas minimum air temperature, relative humidity and wind direction have no such significant influence.

Quick Sequential (Sepsis Related) Organ Failure Assessment: A high performance rapid prognostication tool in patients having acute pyelonephritis with upper urinary tract calculi

Siddharth Pandey,Satyanarayan Sankhwar,Apul Goel,Manoj Kumar,Ajay Aggarwal,Deepanshu Sharma,Samarth Agarwal,Tushar Pandey 대한비뇨의학회 2019 Investigative and Clinical Urology Vol.60 No.2

Purpose: To analyze the utility of quick Sequential Organ Failure Assessment (qSOFA) in patients with uro-sepsis due to acute pyelonephritis (APN) with upper urinary tract calculi, we conducted this study. The role of qSOFA as a tool for rapid prognostication in patients with sepsis is emerging. But there has been a great debate on its utility. Literature regarding utility of qSOFA in uro-sepsis is scarce. Materials and Methods: Ours was a retrospective study including 162 consecutive patients who were admitted for APN with upper urinary tract calculi over a 3 and half years (total 42 months) period. We evaluated the accuracy of qSOFA in predicting inhospital mortality and intensive care unit (ICU) admissions and compared this with the predictive accuracy of systemic inflammatory response syndrome (SIRS). We used the Area Under Curve (AUC) of the Receiver Operator Characteristic curve to calculate it and also calculated the optimum cut off for qSOFA score. Results: The overall mortality and ICU admission rates were 7.4% and 12.9%, respectively. qSOFA had a higher predictive accuracy for in-hospital mortality (AUC, 0.981; 95% confidence interval [CI], 0.962–1.000) and ICU admissions (AUC, 0.977; 95% CI, 0.955–0.999) than SIRS. A qSOFA score of ≥2 was an optimum cut off for predicting prognosis. In a multivariate model qSOFA ≥2 was a highly significant predictor of in-hospital mortality and ICU admissions (p<0.001). Conclusions: qSOFA is a reliable and rapid bedside tool in patients with sepsis with accuracy more than SIRS in predicting inhospital mortality and ICU admissions.

Analysis of 1/f Noise in Fully Depleted n-channel Double Gate SOI MOSFET

Kushwaha Alok,Pandey Manoj Kumar,Pandey Sujata,Gupta A.K. The Institute of Electronics and Information Engin 2005 Journal of semiconductor technology and science Vol.5 No.3

An analysis of the 1/f or flicker noise in FD n-channel Double Gate SOI MOSFET is proposed. In this paper, the variation of power spectral density (PSD) of the equivalent noise voltage and noise current with respect to frequency, channel length and gate-to-source voltage at various temperatures and exponent $C(i.e\;1/f^c$ is reported. The temperature is varied 125 K from to room temperature. The variation of PSD with respect to channel length down to $0.1{\mu}m$ technology is considered. It is analyzed that l/f noise in FD n-channel Double Gate SOI MOSFET is due to both carrierdensity fluctuations and mobility-fluctuations. But controversy still exits to its origin.

Critical aspects of impedance spectroscopy in silicon solar cell characterization: A review

Yadav, Pankaj,Pandey, Kavita,Bhatt, Vishwa,Kumar, Manoj,Kim, Joondong PERGAMON 2017 RENEWABLE AND SUSTAINABLE ENERGY REVIEWS Vol.76 No.-

<P><B>Abstract</B></P> <P>Solar energy generation and utilization is dominated by silicon based solar photovoltaic technology, which has a market share of 80–90% of the solar photovoltaic industry worldwide. The performance indicating parameters of silicon solar cells include power conversion efficiency, series and shunt resistance, ideality factor and built-in potential. These parameters are mostly characterized by DC techniques, which is limited by its insufficiency to identify other important parameters such as interfacial diffusion and transition capacitance and resistive and capacitive components of p-p<SUP>+</SUP> interface of a silicon solar cell. Impedance spectroscopy is considered to be one of the most promising techniques for the characterization of abovementioned performance limiting parameters of a solar cell. In order to address the decoupling of various physical processes associated with different interfaces of a solar cell, quantitative analysis of the impedance spectroscopic data is required. An appropriate mathematical model is frequently used to correlate with the physical performance limiting parameters. This review presents a complete overview of the required mathematical models to analyse impedance spectroscopic data for interfacial processes of silicon solar cell.</P>

Analysis of 1/f Noise in Fully Depleted n-channel Double Gate SOI MOSFET

Alok Kushwaha,Manoj Kumar Pandey,Sujata Pandey,A. K. Gupta 대한전자공학회 2005 Journal of semiconductor technology and science Vol.5 No.3

An analysis of the 1/f or flicker noise in FD n-channel Double Gate SOI MOSFET is proposed. In this paper, the variation of power spectral density (PSD) of the equivalent noise voltage and noise current with respect to frequency, channel length and gate-tosource voltage at various temperatures and exponent C(i.e 1/f^c) is reported. The temperature is varied 125 K from to room temperature. The variation of PSD with respect to channel length down to 0.1 μm technology is considered. It is analyzed that 1/f noise in FD n-channel Double Gate SOI MOSFET is due to both carrierdensity fluctuations and mobility-fluctuations. But controversy still exits to its origin.

Cyclin D1, Retinoblastoma and p16 Protein Expression in Carcinoma of the Gallbladder

Srivastava, Vineeta,Patel, Brijesh,Kumar, Mohan,Shukla, Mridula,Pandey, Manoj Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5

Background: Cancer of the gallbladder is a relatively rare neoplasm with a poor prognosis. The exact mechanisms of its genesis are not known and very little information is available on molecular events leading to labeling this as an orphan cancer. Materials and Methods: In this prospective case control study we evaluated the expression of p16, pRb and cyclin D1 by immunohistochemistry to study the G1-S cell-cycle check point and its possible role in gallbladder carcinogenesis. A total of 25 patients with gallbladder carcinoma (group I), 25 with cholelithiasis (group II) and 10 normal controls. were enrolled Results: Cyclin D1 expression was seen in 10 (40%) patients each with carcinoma and cholelithiasis while only in 2 (20%) of the normal gallbladders but differences were not statistically significant (p value=0.488). p16 was expressed in 12% patients of carcinoma of the gallbladder and 28% of cholelithiasis, however this difference was not statistically significant (p value=0.095). Retinoblastoma protein was found to be expressed in 50% of normal gallbladders and 6 (24%) of carcinoma and 8 (32%) of gallstones. The present study failed to demonstrate any conclusive role of cyclin D1/RB/ p16 pathway in carcinoma of the gallbladder. Conclusions: The positive relation observed between tumor metastasis and cyclinD1 expression and p16 with nodal metastasis suggested that higher cyclin D1/p16 expression may act as a predictive biomarker for aggressive behavior of gallbladder malignancies.

Thermophoresis and suction/injection roles on free convective MHD flow of Ag–kerosene oil nanofluid

Himanshu Upreti,Alok Kumar Pandey,Manoj Kumar 한국CDE학회 2020 Journal of computational design and engineering Vol.7 No.3

In this article, themass and heat transfer flow of Ag–kerosene oil nanofluid over a cone under the effects of suction/injection, magnetic field, thermophoresis, Brownian diffusion, and Ohmic-viscous dissipation was examined. On applying the suitable transformation, PDEs directing the flow of nanofluid were molded to dimensionless ODEs. The solution of the reduced boundary value problem was accomplished by applying Runge–Kutta–Fehlberg method via shooting scheme and the upshots were sketched and interpreted. The values of shear stress and coefficients of heat and mass transfer were attained for some selected values of governing factors. The obtained results showed that when the amount of surface mass flux shifts from injection to the suction domain, the heat and mass transfer rate grew uniformly. However, they have regularly condensed with the rise in the magnitude of the magnetic field and particle volume fraction. Several researches have been done using cone-shaped geometry under the influence of various factors affecting the fluid flow, yet, there exists no such investigation that incorporated the response of viscous-Ohmic dissipation, heat absorption/generation, suction/blowing, Brownian diffusion, and thermophoresis on the hydro-magnetic flow of silver-kerosene oil nanofluid over a cone.

Laparoscopic transperitoneal heminephrectomy for treatment of the nonfunctioning moiety of duplex kidney in adults: A case series

Manmeet Singh,Samarth Agarwal,Apul Goel,Manoj Kumar,Ashish Sharma,Siddharth Pandey,Satynarayan Sankhwar 대한비뇨의학회 2019 Investigative and Clinical Urology Vol.60 No.3

Purpose: We report the results and experience of a tertiary care center in laparoscopic transperitoneal heminephrectomy for the treatment of a non-functioning upper pole moiety of duplex kidney in adults. Materials and Methods: The key point of the technique included the placement of a 6-Fr ureteric catheter in the healthy ureter at the beginning of the procedure under fluoroscopic guidance cystoscopically. A standard laparoscopic 3- to 4-port placement was done after placing the patient in a 45 to 90 degrees lateral decubitus position. The upper pole was mobilized transperitoneally and transected using a harmonic scalpel. Results: A total of 17 patients aged 19 to 44 years underwent laparoscopic upper pole heminephrectomy. All patients had a complete duplicated renal collecting system on the ipsilateral side. Three patients were found to have ureterocele. The average blood loss was minimal (50–150 mL) with a mean of 95 ml. None of the patients required any blood transfusions. The mean operative time was 220 minutes (range, 160–315 minutes). The average length of hospital stay was 3 days (range, 2–4 days). Only 2 patients had Clavien-Dindo grade 3a complications, which were managed by double J stenting and percutaneous aspiration, respectively. Conclusions: Laparoscopic heminephrectomy is playing a cornerstone role in the treatment of the non-functioning moiety of duplex kidneys. The procedure is safe, efficient and offers the typical preoperative and postoperative benefits of laparoscopic surgery. The rate of complications in adults is acceptable and is similar to that reported in pediatric patients.