Experimental research concerning the possibility of the cow manure conversion into biogas

Cow manure has been used since ancient times as an organic fertilizer in agriculture. Being rich in micronutrients, especially zinc, it is suitable to be used for all types of crops. The increase in the number of inhabitants generated the need for a larger amount of food and associated ever growing need of energy supply. Thus, an increase in the number of farms and cultivated agricultural areas was necessary, as well ever-growing secure energy sources. The strict laws on waste management, on reduction of greenhouse gases emission and in general addressing the decrease of the manmade pollution are some of the reasons that have led to the developing and application of alternative energy solutions. This paper aims to shed light on another much more beneficial feature of cow dung through its modern use, by production of biogas through anaerobic digestion. The experimental work is performed on an ultra-modern laboratory installation, capable to generate in 6 separate digesters of the biogas, according todivers receipts. In order to create a favourable environment for the growth of bacteria, the digestate was kept at a temperature of 37° C, thus creating mesophilic conditions. Throughout the experiment the pH value was monitored and recorded, as well the amount of generated methane.

ANALISIS PENGUKURAN KUALITAS PELAYANAN KONSUMEN DENGAN METODE SERVQUAL

The hospital is a health institution that is engaged in services. The quality of a service will encourage consumers to form strong bonds with the company. If the service received exceeds consumer expectations, service quality is perceived as ideal quality. Conversely, if the service received is lower than expected, the quality of the service is perceived as poor. Thus, whether the quality of service is good or not depends on the ability of service providers to consistently meet consumer expectations. This study aims to measure the service quality of the Clinical Pathology Laboratory Installation of RSUP Sarjito Yogyakarta using the Servqual Method. The subjects of this study were consumers of the Clinical Pathology Laboratory Installation of the Sarjito Hospital Yogyakarta, while the object of this study was the quality of service for the Clinical Pathology Laboratory Installation of the Sarjito Hospital Yogyakarta. The sample of this research is 99 respondents. The data analysis of this research uses SERVQUAL analysis. The results of this study indicate that the service quality of the Clinical Pathology Laboratory Dr. Sardjito Yogyakarta provides satisfaction to consumers. Keywoard: Quality of Service, SERVQUAL.

Development of an Approach for Determining the Effectiveness of Inhibition of Paraffin Deposition on the Wax Flow Loop Laboratory Installation

The formation of wax deposits is a common phenomenon in the production and transportation of formation fluids. On the territory of the Perm Krai, this problem occurs in half of the mining funds. One of the most common and promising methods of dealing with these deposits is the use of inhibitor regents. The most popular technique for assessing the effectiveness of a wax inhibitor is the «Cold Finger», which has a number of significant drawbacks. This work presents a number of methods for assessing the effectiveness of inhibition of paraffin formation on the laboratory installation «WaxFlowLoop». A number of laboratory studies have been carried out to determine the effectiveness of a paraffin deposition inhibitor for inhibiting the paraffin formation process of four target fluids. Verification of the obtained values was carried out by comparing them with the field data. As a result of laboratory studies, it was found that the value of the inhibitor efficiency, determined by the «Cold Finger» method, differs from the field data by an average of 2 times. At the same time, the average deviation of the results determined at the «WaxFlowLoop» installation from the field data is 8.1%. The correct selection of a paraffin deposition inhibitor and its dosage can significantly increase the inter-treatment period of the well, thereby reducing its maintenance costs and increasing the efficiency of well operation.

ANALISIS KELENGKAPAN STANDAR INSTALASI LABORATORIUM DI RSIA ERIA BUNDA PEKANBARU TAHUN

Laboratorium klinik adalah laboratorium kesehatan yang melaksanakan pelayanan, pemeriksaan specimen klinik untuk mendapatkan informasi tentang kesehatan perorangan terutama untuk menunjang upaya diagnosis penyakit, penyembuhan penyakit, dan pemulihan kesehatan.Tujuan penelitian ini secara umum untuk mengetahui Analisi Kelengkapan Standar Instalasi Laboratorium di RSIA Eria Bunda Pekanbaru Tahun 2020.Dilakukan wawancara mendalam dan observasi kepada 5 informan.Lokasi penelitian dilakukan di RSIA Eria Bunda Pekanbaru di jln.K.H.Ahmad Dahlan No.163 Sukajadi Pekanbaru, Riau, khususnya dibagian laboratorium pada bulan Maret-April 2020.Hasil penelitian menunjukkan bahwa SDM di laboratorium belum sesuai dengan standar, Sarana di laboratorium belum sesuai dengan standar, Prasarana di laboratorium belum sesuai dengan standar, dan SOP di laboratorium belum sesuai dengan standarnya. Dari hasil penelitian dapat disimpulkan bahwa SDM di laboratorium masih perlu penambahan SDM atau memaksimalkan SDM yang ada dengan menggatur ulang jadwal shiff, Sarana di laboratorium harus dilengkapi dari ruang-ruangan sampai alat laboratorium, Prasarana menyediakan KM/WC untuk pasien dan petugas secara terpisah disekitar laboratorium, dan SOP di laboratorium perlu adanya pengawasan untuk staf analis dalam menerapkan SOP di RSIA Eria Bunda Pekanbaru Tahun 2020. A clinical laboratory is a health laboratory that provides service, examines clinical specimen to obtain information on individual health, especially to support effort to diagnose disease, cures disease and restores health. The purpose of this study generally was to determine the analysis of standard completeness of laboratory installation at RSIA Eria Bunda Pekanbaru in 2020. In-depth interview and observation were conducted with 5 informants. The location of the research was carried out at RSIA Eria Bunda Pekanbaru on KH. Ahmad Dahlan street No.163 Sukajadi Pekanbaru, Riau, especially in the laboratory section on March-April 2020. The result showed that the human resources in the laboratory were not in accordance with standard, the facility in the laboratory was not in accordance with the standard, the infrastructure in the laboratory was not in accordance with the standard, and SOP in the laboratory was not in accordance with the standard. From the result of the study it can be concluded that the human resources in the laboratory still need to add more human resources or maximize existing human resources by resetting the shiff schedule, the facility in the laboratory must be equipped from rooms to laboratory equipment, infrastructure provides bathroom /toilet for patient and staff separately around the laboratory , and SOP in the laboratory needs supervision for analizing staff in implementing SOP at RSIA Eria Bunda Pekanbaru in 2020.

Application of the genetic algorithm method in the problem of chemical kinetics of the oxidative regeneration process

Annotation. One of the main problems in chemical kinetics is the establishment of the mechanisms of complex chemical reactions. The inverse problem of chemical kinetics is understood as the determination of the dependence of the concentration of the participating components on the basis of experimental data obtained from a laboratory installation for the oxidative regeneration of coked catalysts. One of the main methods used in inverse problems the genetic algorithm. The algorithms considered in the article make it possible to determine the values of the rate constants of the considered chemical stages.

Development of the concept of an innovative laboratory installation for the study of dust-forming surfaces

Currently, the determination of the emission rate of suspended solids from a unit of the surface area of a man-made mass at various parameters of the wind flow is not sufficiently described. The analysis of the world experience of researchers shows that existing laboratory installations have various design features that do not allow to correctly determine the mass of the dust being flapped and wind-blown. Based on the analysis results, the concept of an innovative laboratory installation for the study of dust-forming surfaces has been developed. It takes into account the influence of wind shadows, the deturbulization of an artificially created air flow, the possibility of regulating not only the flow velocity mode, but also the creation of a vacuum or disturbance in the area of sample placement, as well as the formation of a certain angle of wind flow attack relative to the surface. The concept provides for the possibility of determining the volume of dust emissions by the values of the lost dust masses in the sample and by the values of dust concentrations in the outgoing stream. The calculation of the main basic elements of the installation using the ANSYS FLUENT software package was carried out. The model and configuration of the wind tunnel have been developed and calculated, the main geometric parameters and functional elements for the possibility of use in scientific work have been determined. For practical use of the empirical roughness value of the underlying surface, its values are recommended in a wide range – from zero for the water surface to 0.44 for large cities with tall buildings and skyscrapers.

Kualitas Pelayanan dan Kepuasan Pasien (Studi Kasus Instalasi Laboratorium Rumah Sakit ST. Theresia Jambi)

The purpose of this study is to see the extent to which service quality affects patient satisfaction, the subjects used as the unit of analysis in this study are patients who use the services of the ST hospital laboratory installation. Theresia Jambi, totaling 57 patients, the data collection technique used a closed questionnaire given to respondents with alternative answers that had been provided, then the data was processed using regression analysis. The results of this study prove that the higher the level of service quality provided, it can affect the increase in patient satisfaction.

Selective sensitivity of the Black Sea microalgae to viral infection after exposure to a constant magnetic field

The change in sensitivity to viral infection of cultures of three species of Black Sea microalgae (Tetraselmis viridis, Dunaliella viridis and Phaeodactylum tricornutum) after exposure to a constant unidirectional magnetic field with a magnetic induction of 600 G is experimentally studied. The studies were carried out with using a developed laboratory installation. With the duration of the experiments 24 h and 48 h, it was recorded that being in a magnetic field resulted in an increase in the resistance to viral lysis in microalgae T. viridis, its decrease in P. tricornutum and no changes in D. viridis. We assume that the revealed changes in the sensitivity of microalgae to viral infection after exposure to a magnetic field are due to their species characteristics and selectivity.

Influence of plasma electrolytic hardening modes on the structure and properties of 65G steel

This work presented a study of the structure, hardness and wear resistance of 65G steel treated with electrolyte-plasma hardening under different conditions. The electrolyte-plasma hardening technology and a laboratory installation for the realisation of electrolyte-plasma hardening are also described. After electrolyte-plasma hardening, we have established that a modified layer consists of the a-phase (martensite) and M3C cementite. The study results showed that electrolyte-plasma hardening makes it possible to obtain layers on the 65G steel surface that provides an increase in microhardness by 2.6 times, wear resistance by two times, resistance to abrasive wear by 1.7 times compared to the original samples. In addition, local hardening ensures the achievement of technical and economic effects due to the absence of the need to isolate an unwanted site of parts, processing only the areas requiring hardening.