Is Biomass Resource the Answer to Ohio’s Cleaner and Sustainable Energy Future?

The growing concerns of global warming have initiated increasing use of renewable resources including biomass energy all over the world. Clean and sustainable use of energy resources will be pivotal to mitigate the negative environmental impacts of traditional means of electricity generation such as fossils fuels. These issues are even more relevant in Ohio, as its power industry is heavily based on coal, making Ohio one of the top air polluters in the U.S. This paper develops a dynamic linear programming model (OH-MARKAL) to analyze key policy issues for Ohio’s energy future. Specifically, the model focuses on biomass cofiring as an option to diversify the fuel resource base for Ohio’s power industry. The research findings suggest that CO2 emission will increase by 18 percent by 2029 as compared to 2002 level, if current fuel mix remains unchanged for electricity generation. The model indicates that the proposed use of biomass energy resources will provide up to 7 percent of renewable electricity, thus achieving a 15 percent reduction in the 2002 levels of CO2 emissions in Ohio. Further, to achieve higher environmental goals, Ohio should also include other renewable resources such as wind, hydro, geothermal, or solar power in its power generation mix

Change in refractive status of the patients undergoing phacoemulsification surgery.

This study was carried out with the objective of finding refractive status of patients undergoing phacoemulsification surgery for cataract extraction. Success of cataract surgery can be quantified with the improvement in visual acuity with least amount of refractive error. Prospective study of 44 patients was done pre operatively and with subsequent follow up in the first, third and eighth week post operatively. Pre and post operative evaluation was carried out in terms of visual acuity, refractive error and corneal curvature. Among patients undergoing surgery, 91.0% achieved visual acuity of 6/9 or better at eighth week follow up 73.3% of patients had astigmatism of 1.25 dioptric cylinder or less. Keratometry readings showed insignificant variability in the preoperative and postoperative period (p > 0.05). This confirms that phacoemulsification surgery does not change the corneal curvature significantly and thereby induces less amount of astigmatism

Modeling of positive and negative organic magnetoresistance in organic light-emitting diodes

Copyright 2012 by the American Physical Society. Article is available at

Financial and Economic Analysis of CRP, Row Crop, and White Pine Production on Erodible Lands of Southern Ohio

Exact date of working paper unknown

A Sub-Terahertz Sliding Correlator Channel Sounder with Absolute Timing using Precision Time Protocol over Wi-Fi

Radio channels at mmWave and sub-THz frequencies for 5G and 6G communications offer large channel bandwidths (hundreds of MHz to several GHz) to achieve multi-Gbps data rates. Accurate modeling of the radio channel for these wide bandwidths requires capturing the absolute timing of multipath component (MPC) propagation delays with sub-nanosecond accuracy. Achieving such timing accuracy is challenging due to clock drift in untethered transmitter (TX) and receiver (RX) clocks used in time-domain channel sounders, yet will become vital in many future 6G applications. This paper proposes a novel solution utilizing precision time protocol (PTP) and periodic drift correction to achieve absolute timing for MPCs in power delay profiles (PDPs) --captured as discrete samples using sliding correlation channel sounders. Two RaspberryPi computers are programmed to implement PTP over a dedicated Wi-Fi link and synchronize the TX and RX Rubidium clocks continuously every second. This synchronization minimizes clock drift, reducing PDP sample drift to 150 samples/hour, compared to several thousand samples/hour without synchronization. Additionally, a periodic drift correction algorithm is applied to eliminate PDP sample drift and achieve sub-nanosecond timing accuracy for MPC delays. The achieved synchronicity eliminates the need for tedious and sometimes inaccurate ray tracing to synthesize omnidirectional PDPs from directional measurements. The presented solution shows promise in myriad applications, including precise position location and distributed systems that require sub-nanosecond timing accuracy and synchronization among components.Comment: 6 pages, 7 figures, 3 tables, IEEE Global Communications Conference (GLOBECOM) 202

Color vision defects in school going children.

INTRODUCTION: Color vision defect can be observed in various diseases of optic nerve and retina and also a significant number of people suffer from the inherited condition of red and green color defect. METHODS: A cross-sectional descriptive study was designed with purposive sampling of students from various schools of Kathmandu Valley. All children were subjected to color vision evaluation using Ishihara Isochromatic color plates along with other examination to rule out any other causes for color deficiency. RESULTS: A total of 2001 students were examined, 1050 male students and 951 females with mean age of 10.35 (+/- 2.75) and 10.54 (+/- 2.72) respectively. Among the total students examined, 2.1% had some form of color vision defects. Of the male population, 3.9% had color vision defects while none of the female was found with the deficiency. CONCLUSIONS: The prevalence of color vision defect in Nepal is significant and comparable with the prevalence quoted in studies from different countries

Waste Factor: A New Metric for Evaluating Power Efficiency in any Cascade

In this paper, we expand upon a new metric called the Waste Factor ($W$), a mathematical framework used to evaluate power efficiency in cascaded communication systems, by accounting for power wasted in individual components along a cascade. We show that the derivation of the Waste Factor, a unifying metric for defining wasted power along the signal path of any cascade, is similar to the mathematical approach used by H. Friis in 1944 to develop the Noise Factor ($F$), which has since served as a unifying metric for quantifying additive noise power in a cascade. Furthermore, the mathematical formulation of $W$ can be utilized in artificial intelligence (AI) and machine learning (ML) design and control for enhanced power efficiency. We consider the power usage effectiveness (PUE), which is a widely used energy efficiency metric for data centers, to evaluate $W$ for the data center as a whole. The use of $W$ allows easy comparison of power efficiency between data centers and their components. Our study further explores how insertion loss of components in a cascaded communication system influences $W$ at 28 GHz and 142 GHz along with the data rate performance, evaluated using the consumption efficiency factor (CEF). We observe CEF's marked sensitivity, particularly to phase shifter insertion loss changes. Notably, CEF variations are more prominent in uplink transmissions, whereas downlink transmissions offer relative CEF stability. Our exploration also covers the effects of varying User Equipment (UE) and Base Station (BS) deployment density on CEF in cellular networks. This work underscores the enhanced energy efficiency at 142 GHz, compared to 28 GHz, as UE and BS numbers escalate.Comment: 6 pages, 3 figures, 2023 IEEE Global Communications Conferenc

SIMULTANEOUS ESTIMATION OF IRBESARTAN AND HYDROCHLOROTHIAZIDE BY UV SPECTROSCOPY

Objective: The literature survey revealed that various methods are reported for determination of Irbesartan and Hydrochlorothiazide alone or in combination with other drugs So, the main objective of our study was to develop simple, accurate and reproducible methods for the simultaneous estimation of Irbesartan and Hydrochlorothiazide in a combined dosage form.Methods: The method for the simultaneous determination of Irbesartan and Hydrochlorothiazide by spectroscopy has been developed. The simple, accurate and precise method includes Area Under the Curve (AUC) method. On response to the effect of solvent on spectral behaviors of Irbesartan and Hydrochlorothiazide, methanol was selected as solvent. Irbesartan shows maximum absorbance at 224 nm and Hydrochlorothiazide shows maximum absorbance at 271 nm. For the AUC method, the wavelength ranges between 225-230 nm and 258-265 nm respectively were selected with reference to the absorbance curves plotted between the wavelengths of 200-400 nm. This method allows rapid analysis of two drug combinations.Results: The result of analysis was validated statistically by recovery study following ICH method validation guideline. Tablet containing both drugs was assayed using the method developed, showing a good accuracy and precision.Conclusion: It can therefore be concluded that use of this method can save more time and money and it can be used in small laboratories with accurac

Investigation of type of interaction between salicylic acid and ethanol at different temperatures.

ABSTRACT The study of ultrasonic velocity leads to a better understanding of the nature of interactions between the solute and solvent. Density, viscosity and ultrasound velocity have been determined over the complete concentration range for binary liquid mixture of salicylic acid and ethanol. These data provide useful information about various types of interactions occurring in the solution. The derived acoustic parameters like adiabatic compressibility, intermolecular free length, specific acoustic impedance etc. Have been calculated from experimental data. The sign and magnitude of these properties have been used to interpret the experimental results in terms of molecular interactions