Computer-aided study of the impedance dispersion of biological tissues

The article considers the development of a software and hardware system to study the impedance dispersion of biological fluids and tissues using an alternating signal generated and received by SensorDaq and LabView software. The design and development of the impedance measurement software and hardware system are described in detail. The impedance and capacitance values of the biological object were obtained when scanning at various frequencies and temperatures corresponding to different object conditions. The results of the system testing are shown, and the conclusions on the interaction nature of biological tissue and an external current are drawn.

Design and Implementation of Inverse Kinematics and Motion Monitoring System for 6Dof Platform

Six-axis motion platforms have a low contraction height and a high degree of freedom. First of all, the designed six-axis crank arm platform, including the motor, reducer, crank arm, link, platform support arm, and upper and lower platforms, can be designed for different bearing requirements. Secondly, it uses a coordinate transform and kinematics theory to derive each motor rotor angle. A set of platform data acquisition (DAQ) monitoring modules was established, and the LabVIEW programming language was used to write measurement software. The monitoring items include displacement, speed, and acceleration, which can be displayed on the screen and recorded by an industrial computer in real time and dynamically. Then, an RS-485 or RS-232 communication transmission interface was used to provide the control system with the related movement information. Finally, an industrial computer combined with a motion control card was used as a control kernel to realize the control algorithms, internet module function, I/O write and read signals, firmware integration, and human–machine interface message. The experimental results validate the appropriateness of the proposed method.

Regulatory Requirements for Accuracy in Flare Gas Measurement – Synergizing Software Method Advancement to assist the Hardware Technology to meet Accuracy Demands

Over the years, the industry has been so used to the hard logic of utilizing flare gas meters (notably the ultrasonic flare gas meters) in the measurement of stranded flare gas. This is because it has been a workable solution for years with minimal challenges due to the broader range of accuracy required by regulatory bodies. Usually, companies are either constrained to either utilize the associated gas from the oil and gas facilities as fuel gas to power up the unit or reinject in the reservoir to serve as pressure maintenance agent that pushes the oil towards the reservoir, or stored in the reservoir and/or flare the gas (which in most cases, have been deployed by operators despite the penalties by the regulatory organization). With the recent steer in carbon capture, natural gas utilization, climate change and energy transition, accuracy level demands has been made more stringent with some countries including Nigeria requesting for 2.5 – 3% accuracy level of measurement from operators in a bid to monitor and curb the essence flue gases that are unaccounted for. This can only be for gases flared during routine conditions which does include when process upsets give rise to shut down and blowdown of gases through the flare header to the flare tip. The high demand of measurement accuracy has opened windows for OEM to produce calibrated meters that are bespoke with a longer timeline for recalibration as most of the hardware in critical operations could require a process shutdown to either maintain, repair, calibrate or even replace. With this growing concerns in the industry and the surging growth of digitalization involving AI, data analytics etc in other areas, the software method would be a potential source of synergy to assist the failing hardware which are being impacted by time as calibration issues continue to resurface throughout the life of the meters, giving rise to wider accuracy measurement in the region 5 – 10%, hence attracting the hammer from the regulators. This paper is intended to produce a deep dive of the current regulatory requirements for gas measurement in Nigeria by the regulators (DPR), the impact of the recent 3% accuracy requirements as it impacts both large and medium size operators, the role of gas measurement software for bridging the gaps and shortfalls of the hardware components. A case study of newly developed flare gas measurement software and its impact in assisting operators in gas performance reporting, production allocation and flare penalties where applicable

Español Plastic colored paddings and its effect on the foliar micromorphology of husk tomato (Physalis ixocarpa Brot.)

Objective: To assess the effect of colored plastic paddings on the foliar micromorphology of husk tomato (Physalis ixocarpa Brot.). Design / methodology / approach: A completely randomized statistical model was used with five treatments (black, white, blue, red and green paddings) with three repetitions each, 95% reliability and Tukey's mean test (P ? 0.05). To quantify the normalized difference vegetation index (NDVI) a portable GreenSeeker® sensor was used. To measurement of total soluble solids a Atago® Digital refractometer, the density and stomatal index, length and width of stomata were determined with a Carl Zeiss microscope with an integrated camera and the AxionVisionRel measurement software 4.8. Results: The results show no significant differences in the NDVI and total soluble solids. The micromorphological variables of adaxial stomatal density and adaxial stomatal index were superior in the blue paddings and exceeded black paddings in 95 % and 50 % respectively. The rest of the micromorphological variables were statistically similar, the yield per plant was statistically similar in the black, white, red and green, while blue paddings yield less. Study limitations / implications: blue paddings improve micromorphological characteristics, but not the yield of husk tomato crops. Findings / conclusions: Some of the foliar micromorphological characteristics of the husk tomato crop are modified by colored plastic paddings; however, the improvement in these variables does not necessarily improve the crop yield, probably due to the absorbed and reflected radiation by the colored plastic paddings.