Utility of nail enamel for inking of surgical margins in oral biopsy: a comparative study

Background: India Ink is the most commonly used ink in surgical pathology. The main disadvantages of India Ink are longer drying time, monochrome, toxicity and cost. Because of these disadvantages, alternative materials have been suggested to replace India ink. The aim of this study is to evaluate the effectiveness of nail enamel for inking of surgical margin and to compare it with India ink. Materials and methods: N = 20, which included 10 mucosal and 10 skin samples. Each selected margin is divided into 2 equal halves and one is inked with India ink and the other with nail enamel (Vernis A Ongles: Dark green). After routine processing and staining, the effectiveness of nail enamel and India ink were compared based on macroscopic and microscopic parameters. Results: Less drying time and visibility on paraffin wax block were excellent for nail enamel. Microscopic visibility of nail enamel was comparable with that of India ink. However, processing fluids contamination is the main drawback of nail enamel. Conclusion: Nail enamel can be used as an alternative to India ink because of its less drying time, ease of application, good visibility on wax blocks and microscopically, availability in multiple colours, cost effectiveness and non-toxicity.

Changes in drivers’ viewing frequency, maneuver duration, and degree of difficulty during back-in parking maneuver with different conditions of parking spaces

To some people, back-in parking maneuver is a relatively hard thing to do. However, previous studies have proven that back-in parking is safer than head-in parking because when exiting the parking space (back-out) from head-in parking, the driver's field of view is more limited, thus increasing the chance of an accident. This study aims to determine the changes in the driver's viewing frequency on the rear-view mirror, maneuver duration, and degree of difficulty during back-in parking maneuvers. Data collection was obtained from 45 participants who tried to park their cars in a parking space with an angle of 30°, 45°, 60°, 90°, each with four different conditions of parking spaces. The driver’s viewing frequency on each rear-view mirror (left, right and center) and maneuver duration were obtained from a dashcam and an external camera recording. The difficulty level for maneuvering was filed according to the driver’s opinion during the experiment for each parking space condition. Based on the data analysis, it was proven that the existence of cars parked on either side of that parking space (obstacles), parking space line signs, and both simultaneously increase the driver’s viewing frequency and maneuver duration when doing back-in parking maneuver, but at the same time, ease the parking maneuver, according to the driver.

Taxation within the Transport Sector: A Ride-hailer and Sharing Economy Perspective

This study explored the implications of taxes on ride-hailing services in a developing economy setting and its effect on the activities of drivers who patronize such services. Using thematic analysis, the study analyzed interview responses from key participants in the ride-hailing services such as the drivers, service operators, and vehicle owners based on the sharing economy perspective. The results indicate that (1) in a broader sense the contribution of the ride-hailing service is characterized with some features such as savings in money and time, ease of stress for both drivers and passengers, and also ease of movement; (2) taxes are needful to ensure sustainable governance but these taxes ought to be equitably charged to all actors within the economy and (3) the Vehicle Income Tax is a cause of financial distress to Uber drivers due to its increasing nature. More importantly, the tax has the potential of eroding profits which makes drivers worse off. This new but genre system of transportation is gaining roots and far advancing within the Ghanaian landscape. Thus, policymakers and industry players must focus on its role within the economy and the benefits therefrom. Equally, there must be more policy initiatives to prevent overburdening the final consumer of ride-hailing services with high taxes and prices. It also suggested that subsequent studies focus on the use of a different methodology within a different or the same setting.

Impact of Privatization on Airlines

The purpose of this paper is to study and identify the factors such Boarding and clearance time, Ease of E-ticketing and luggage capacity and their effect on Customer Preference in the airline. This study examines the underlying forces of service quality influences on passenger’s satisfaction in aircraft transport. The study examines which dimensions have a positive influence on service quality and which dimensions have the most and least important impact on service quality in international air travel, as perceived by airline passengers, thereby ultimately targeting maximum monetary benefits. It is a qualitative research based on subjective examination of behavior, attitude & impressions. The simplification of research support is mainly based on group discussion of respondents. The data was collected through a Focused Group Discussion. Two FGD’s each consisting of 10 participants were recorded. The findings show that how the customers preferred one airline to others because of its quality, pricing and technology and frequency of flights. The participants talked much in depth about the quality and the treatment by staff inside the airplane. They also mentioned the details about the slowdown and fallout of the airline sector in India. The limitations are that it is constraint only to Mumbai. The participants lacked knowledge of the working of the airline industry as they did not travel frequently through airplanes. Keywords: Quality, Preference, Technology, Pricing, and Punctuality

Dissolution behaviour and imageability of ternary borate glasses for use in geniculate artery embolization

Sixteen borate glass compositions comprising K2O and SrO were screened, using a design of mixtures approach, to model compositional effects on dissolution, CT imageability, and MRI relaxivity (R2). Based on the characteristics of each network, together with dose determination and toxicological risk, the composition identified as BKSA16 was selected as a preferred composition for pre-clinical evaluations related to geniculate artery embolization (GAE). Accordingly, BKSA16 particles were subjected to a flame spheroidization process and recharacterized, including the evaluation of residual mass at 72 h in physiologically representative media along with clinical determinations of suspension time (ease of use). For both the irregular particles and microspheres residual mass was present at 72 h in physiologically representative media. Additionally, both the microspheres and irregular particles achieved suspension times deemed to be acceptable for clinical use. The collective data confirms that BKSA16 microspheres have a range of beneficial features (specifically both degradable and imageable) suited to GAE.

Determination of penicillamine, tiopronin and glutathione in pharmaceutical formulations by kinetic spectrophotometry

A novel and simple method for the determination of penicillamine (PEN), tiopronin (mercaptopropionyl glycine, MPG) and glutathione (GSH) in pharmaceutical formulations by kinetic spectrophotometry has been developed and validated. It is based on the redox reaction where the thiol compound (RSH) reduces CuII-neocuproine complex to CuI-neocuproine complex. The non-steady state signal of the formed CuI- neocuproine complex is measured at 458 nm. The initial rate and fixed time (at 1 min) methods were validated. The calibration graph was linear in the concentration range from 8.0 × 10‒7 to 8.0 × 10‒5 mol L−1 for the initial rate method and from 6.0 × 10‒7 to 6.0 × 10−5 mol L−1 for the fixed time method, with the detection limits of 2.4 × 10−7 and 1.4 × 10‒7 mol L−1, resp. Levels of PEN, MPG and GSH in pharmaceutical formulations were successfully assayed by both methods. The advantages of the presented methods include sensitivity, short analysis time, ease of application and low cost.

Development of a GeoGebra-Assisted Calculus Worksheet to Enhance Students’ Understanding

The goal of this study is to develop a GeoGebra-assisted worksheet to enhance students' understanding of calculus. Many studies report that students have difficulty understanding calculus. GeoGebra provides an alternative method to overcome the difficulties associated with calculus. The Plomp development model consists of three phases: specifically, preliminary analysis, prototype development and an assessment was used in this study. The subjects of this study were 37 students. The results of this study are valid in terms of content, presentation, linguistics and graphics and practical in terms of implementation, time, ease of use and effective in terms of its potential impact on students' mathematical understanding. The GeoGebra-assisted worksheet can help students rediscover the given concept, while the use of visualization of the calculus concept can significantly enhance students’ mathematical understanding. Likewise, GeoGebra-assisted worksheets can be used to enhance students’ understanding of calculus. Teachers are suggested using GeoGebra in order to build students’ understanding on calculus subject.

A Comparison of Methods of Controlling the Movement of an Exoskeleton, Supporting Movements of the Upper Limb Using Signals of Muscle Activity and Manual Controls

The paper presents the research methodology and the analysis of the results of the comparison test of two methods of controlling the exoskeleton of the upper limb using signals of muscle activity and manual control devices. The results show the advantage of the joystick method over EMG in terms of usability, task execution time, ease of use and comfort.

Short-term analysis and long-term predictions for the COVID-19 epidemic in a seasonality regime: the Italian case

As of July 14th, COVID-19 has caused in Italy 34.984 deaths and 243.344 infection cases. Strict lockdown policies were necessary to contain the first outbreak wave and prevent the Italian healthcare system from being overwhelmed by patients requiring intensive care. After the progressive reopening, predicting how the epidemic situation will evolve is urgent and fundamental to control any future outbreak and prevent a second wave. We defined a time-varying optimization procedure to repeatedly calibrate the SIDARTHE model with data up to June 24th. The computed parameter distributions allow us to robustly analyse how the epidemic situation evolved and outline possible future scenarios. Assuming a seasonal regime for COVID-19, we tested different lockdown policies. Our results suggest that an intermittent lockdown where six "open days" are allowed every other week may prevent a resurgent exponential outbreak and, at the same time, ease the societal burden of an extensive lockdown.

Paradigm Shift In Classroom Management: A New Way Of Developing Education Business With Marketing Of Classroom Management Software

"This paper explains how educator's needs are satisfied by classroom administration programming (CMS), such as, Moodle, and why educators are some of the time ease back to actualized it. Educators at various colleges gave both subjective and quantitative reactions in regards to their use CMS. The outcomes show that the best needs satisfied by CMS are appropriation of materials and correspondence with understudy. They additionally recommend that convenience and value of CMS are identified with perceptions toward it, yet that disarray in its use isn't. Ultimately, absence of clearness and time were the essential worries of the people who had not yet embraced CMS. Suggestions are talked about.