Impact of Artificial Infiltration on the Removal of Nonsteroidal Anti-Inflammatory Drugs during Treatment of Surface Water

The content of pharmaceuticals in natural waters is steadily increasing. Especially nonsteroidal anti-inflammatory drugs (NSAIDs) are often detected in natural waters due to their widespread use. This group of compounds includes commonly used representatives, such as paracetamol and ketoprofen. The quality of natural waters determines the processes applied for the treatment of drinking water. The methods used in order to remove pharmaceuticals from treated water include adsorption and biologically active filtration. Both processes also occur during artificial infiltration (forced flow of intake surface water through the ground to the collecting wells) at surface water intakes. The processes, which occur in the soil, change the water quality characteristics to a great extent. The goal of the study was to evaluate the removal efficiency of paracetamol and ketoprofen in the process of artificial infiltration used as a pre-treatment of surface water. The studies were conducted at a field experimental installation located at the technical artificial infiltration intake. The experimental installation consisted of three metering wells (piezometers) which were located on the way between the bank of the infiltration pond and the collecting well. The collected water samples allowed to evaluate the change of selected NSAIDs concentrations during the passage of water through the ground. The analysis procedure included solid phase extraction (SPE) and high-performance liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Removal of the studied NSAIDs in the infiltration process occurred with variable effectiveness throughout the year. Paracetamol was removed with annual efficiency equal to 42%, although no significant removal of ketoprofen was observed.

Development of an experimental installation for gray seal magnetoreception research

The assumption was made that Cetaceans, both whales and dolphins, are using geomagnetic field of Earth for orientations during migration. Pinnipeds also make long-distance migrations in open seas without apparent reference point. That may be an evidence of magnetic sense in pinnipeds. In this paper we describe development and construction of experimental installation based on Helmholtz coil for gray seal magnetoreception research. A technique of “selection of an object with specified characteristics” is described, adapted for conduction of experiments with pinnipeds.

Opimization of the main design and operating parameters of the micronization device

The article substantiates the main characteristics of the studied device of micronization in the processing of grain feed by the method of micronization. Here, an experimental micronizer that micronizes feed grain was taken as the object of research. A multi-factor experiment was also conducted to determine the optimal distance of the infrared lamp from the quartz glass and the optimal power of the light flux. The experiments were carried out on an experimental installation equipped with a “Legrand” dimmer, which allowed changing the radiation power of the lamps. For the experiments, a symmetrical Box-Bench plan was selected from a rotatable, composite second tier. The studies were conducted on wheat, barley and velamir.

Influence of Microwave Radiation on the Freezing Rate of Water in a Heat Pump Installation

The article presents the data obtained as a result of an experiment to determine the effect of microwave radiation on the freezing rate of water in a heat pump installation are presented. (Research purpose) The research purpose is in experimentally evaluating the effect of microwave radiation on the speed of the water-ice phase transition to increase the efficiency of the heat pump unit by increasing the rate of water crystallization. (Materials and methods) The main criterion for conducting the experiment was the speed of the water-ice phase transition of ordinary water and water that passed through microwave radiation. The article presents an experimental installation for conducting experiments, consisting of a 90-liter freezer, a Danfoss TLES4F compressor with a cooling capacity of 91 Watts, a programmable Arduino controller with four connected sealed DS18B20 temperature sensors, a water tank made of food- grade plastic. The article presents the scheme of the experimental installation. The water was treated with microwave radiation for 12 seconds, the thickness of the water layer was 4-5 millimeters, and the power of the magnetron used was 750 Watts. (Results and discussion) There was conducted 20 experiments on obtaining thermal energy using the water-ice phase transition. Ten experiments with ordinary filtered water and ten experiments with water subjected to microwave radiation. (Conclusions) Water subjected to uniform microwave radiation cools to 0 degrees Celsius 23 minutes earlier than water that has passed only filtration, and performs a phase transition to a solid state 74 minutes faster. Microwave radiation can be used to increase the efficiency of a heat pump using the energy of the water-ice phase transition by accelerating the production of thermal energy from the heat carrier to the heat supply system.

INVESTIGATION OF THE DIFFUSION OF CARBONYL COMPOUNDS IN THE TECHNOLOGY OF SMOKING MUSK DUCK ON AN EXPERIMENTAL INSTALLATION WITH THE USE OF OVERPRESSURE AND VAPORS OF SPICY-SMOKY FLAVORS

In recent years, the interest of researchers in smoked products has increased, primarily as a source of protein food. At the same time, the task of developing all new types of original smoked prod-ucts is very urgent. One of the promising directions in this area is to expand the product range by changing and improving their taste, aroma and shelf life by smoking the product with smoky fla-vors. Therefore, to solve the problems associated with ensuring high smoking efficiency, it is nec-essary to develop a method that ensures the penetration of smoking particles into the product by eliminating limiting factors in their path. The presented method for producing smoked musk duck with the use of overpressure and vapors of spicy-smoky flavors fully meets the modern develop-ment of the food industry. The article presents the results of the study of the diffusion of carbonyl compounds into the product thickness in an experimental setup. These studies confirm the feasi-bility of using excessive pressure when smoking musk duck.

Experimental Installation for Determination of Attenuation Coefficient of Permanent Magnetic Field by Protective Materials

The permanent magnetic field in addition to electromagnetic radiation has a significant effect on performance of devices. This is particularly true for highly sensitive precision measuring equipment, such as, for example, magnetometers or photomultiplier tubes. In this regard a new high-performance materials for protection against permanent fields and electromagnetic radiation need to be developed. The purpose of this paper is a development of a hardware and software complex for high-precision determination of permanent magnetic field attenuation coefficient and certification of protective materials.This paper describes an experimental installation for determining the attenuation coefficient of a permanent magnetic field using materials and coatings on standard package for electronic equipment. The installation ensures a uniform magnetic field flow in the measurement volume. The advantage of the measuring device is the ability to measure magnetic field in three coordinates due to the use of three pairs of Helmholtz coils and a three-dimensional Hall sensor. The software will enable to control of the magnetic field in all three directions, simulating the real operating conditions of devices that require protection from such influences. In addition, a movable positioning system makes it possible to compensate for the Earth's magnetic field, which increases the accuracy of estimating the attenuation coefficient by protective materials in weak magnetic field.An alternative use of the capabilities of the installation is to test the performance of the devices in a permanent magnetic field and evaluate the electromagnetic compatibility. Experimental results of the work includes determination of the magnetic field attenuation coefficient using standard photomultiplier tube package made of electrolytically deposited permalloy and the sheet of annealed permalloy. Thus, the effect of annealing and closed magnetic circuit on the degree of weakening of the magnetic field is shown. It has been demonstrated that annealing which causes a significant increase in the magnetic permeability promotes an effective attenuation of weak magnetic fields (up to 1 mT). In magnetic fields with an induction of 1 mT or more, effective attenuation is provided by a closed magnetic circuit.

РОЗРОБЛЕННЯ ЕКСПЕРИМЕНТАЛЬНОЇ УСТАНОВКИ ДЛЯ ВИПРОБУВАНЬ ПРОГРАМНО-АПАРАТНИХ ЗАСОБІВ УПРАВЛІННЯ МІКРОЕНЕРГЕТИЧНИМИ МЕРЕЖАМИ ЛОКАЛЬНИХ ОБ’ЄКТІВ

Development of the experimental installation for testing of the software and hardware tools of management of a photovoltaic system of a local facility connected to the grid, which, along with checking its operability, will allow analyzing the operation and adjusting the settings of systems with different parameters under different weather conditions, load schedules and operating modes. Method. Experimental research with preliminary justification of settings based on calculations and simulation data obtained in the Matlab software package. Results. The structure and experimental installation on the base of the photovoltaic system with storage battery and using a photovoltaic battery emulator with software control of generation and load power were developed. The software modules of the system have been developed. According to the results of the simulation, the moments of time are determined when the operating mode is switched in the experimental setup. The experimental setup was tested in static and dynamic modes. Static tests were aimed at checking the functioning of the photovoltaic battery emulator in accordance with the specified solar radiation power and the temperature of the photo module, as well as checking the correctness of the model used in the program. Tests in statics with fixed parameters and in dynamics in the daily cycle, in general, confirmed the efficiency of the proposed solutions. Scientific novelty. The method of experimental research in the daily cycle of photovoltaic systems control with the use of software-controlled emulators of a photovoltaic battery and load with power and time scaling was developed. This, along with the acceleration of the experiment, allows us to estimate the effectiveness of the tested systems at different ratios of system parameters and adjust the functioning algorithms. Practical importance. The proposed solutions for the implementation of the experimental installation allow minimizing material costs and time costs in the process of testing and development of software and hardware control tools of a photovoltaic system with storage battery.

Reef: Drawing in the Expanded Field

In this article we introduce a body of research on drawing in the extended field and discuss a recent outcome – Reef, an installation at the Tin Shed gallery, Sydney. The research agenda has evolved from architectural sketch drawing. The research extends the open, evocative capacity of drawing through experimental installation art works, deploying sculptural sketch objects, VR, AR and soundscapes. Reef is the second in a series exploring the landscape phenomena of seismic shock. It is a sketch of a section of seabed in Kaikōura, Aotearoa New Zealand.

Reef: Drawing in the Expanded Field

In this article we introduce a body of research on drawing in the extended field and discuss a recent outcome – Reef, an installation at the Tin Shed gallery, Sydney. The research agenda has evolved from architectural sketch drawing. The research extends the open, evocative capacity of drawing through experimental installation art works, deploying sculptural sketch objects, VR, AR and soundscapes. Reef is the second in a series exploring the landscape phenomena of seismic shock. It is a sketch of a section of seabed in Kaikōura, Aotearoa New Zealand.