Compliance of operating room sterilization procedures with valid Scientific guidelines

introduction: Infections caused by surgeries have always been considered a primary concern of medical centers and are associated with irreversible complications. Using appropriate sterilization procedures reduces these complications. This study aimed to investigate how compliant are the current sterilization procedures of operating room (OR) environment and instruments with valid scientific standards. Methods: This cross-sectional, descriptive-analytical study examined ophthalmology, gynecology, and otorhinolaryngology ORs of Valiasr Hospital in Birjand. With the presence of the researcher in the OR, a standard 41-item checklist consisting of three parts (environmental cleaning, equipment cleaning, and sterilization procedure) was completed for each OR in each shift. The data were analyzed using the Mann-Whitney and Kruskal-Wallis test by SPSS(Version18) in significant level (a=0.05). Results: A total of 50 questionnaires were filled out for ORs. The highest number of questionnaires were completed for the gynecology OR, and the most elective surgeries were performed in the morning shift. There was no significant difference between the median score of OR instruments cleaning and that of valid scientific guidelines in terms of steralization (P> 0.05). The median scores of sterilization procedures and steps in hospital ORs were significantly different from those of scientific guidelines in the field of sterilization of surgical operations (P <0.05). Conclusion: The study findings indicate cases of mismatch between the quality of infection control and sterilization in the ORs of Vali-asar Hospital in Birjand and those recommended by valid scientific standards and guidelines.

Study on the improvement of the device for cleaning low-grade cotton with high- moisture

This article analyzes the importance of the process of ginning cotton with high pollution before ginning, the operation of the ginning device before ginning, the impact of the device nodes with the raw cotton. At the same time, the cleaning efficiency of the machine in the cleaning equipment from small and large contaminants, the basic control developments and calculation processes in the selection of the technological parameters of the cleaners are considered. It was suggested and analyzed that before the cotton was ginned, the cleaning device should be replaced with cone-tipped piles and a new belt extension to remove impurities instead of fine-grained drum piles. The impact strength and impact of the proposed conical-tipped pile drums on cotton have been studied.

Theoretical study of the impact aimed at improving the efficiency of fiber cleaning

Since cotton cleaning in Uzbekistan is carried out mainly manually, this paper discusses the methods and technologies established in the process of cleaning cotton and fiber. The process of fiber cleaning is one of the important processes that complete the technological process of cotton processing, given that the quality of fiber largely depends on the efficiency of this process, the research work on the mechanization of the type of collection and improving the efficiency of its cleaning is analyzed. In order to improve the efficiency of cleaning cotton collected on the machine, information is provided on the need to improve the equipment for cleaning fiber used in cotton gins. The research results are based on the need to replace a special structural device that guides the fiber to the correct tooth of the first sawtooth cylinder located on two drum cleaning plants. New fiber-cleaning equipment was installed in the Jizzakh regional JSC “Zarbdor cotton cleaning» and experimental tests were conducted in production conditions. In addition, the process of changing the pressure, density and speeds in the furnace and the effect of their cleaning efficiency has been modeled and theoretically analyzed, when the efficiency of cleaning the cotton fiber flow using a column system allows changing the raw material from 4 mm to 15 mm based on the device. By results of the conducted analysis it was shown that the increase of efficiency of purification depends on the device attached to the saw teeth, factor of the taxation of the distribution coefficient B and p 0 efficiency factor of increasing the initial pressure and coefficient of efficiency savings from the analysis of graphs, which present graphs of the distribution depending on the type of saw teeth. Based on the results of the research, recommendations are given for the widespread introduction of fiber cleaning equipment installed at enterprises of primary cotton processing, with the installation of a special structural guide device.

Introduction to Part II

This chapter introduces the material to be studied in Part II; it outlines the types of evidence for functional domestic artefacts that reveal the experiences of daily life in Roman and late antique Egypt. It explains that an analysis of object function can reveal how objects were used for different activities on a day-to-day basis, and therefore demonstrate some of the experiences of people in the past. The section assesses a range of everyday artefacts in durable materials, like stone, glass, ceramic, metals, and bone and ivory. Artefacts associated with daily activities such as cooking and dining, lighting the home, leisure time, and textile production are discussed in relation to specific examples from the archaeological record and textual sources. The section also addresses the extraordinary organic artefacts surviving from Egypt, and the special value of functional artefacts made of wood, textiles, leather, and other perishable materials. Organic artefacts associated with home furnishings and other textiles, writing tools and materials, basketry, and cleaning equipment, are discussed in relation to the experiences they facilitated in Roman and late antique Egypt. The chapter also discusses how these artefacts reveal the temporal rhythms of the home and multifunctional nature of domestic space and objects.

Analysis and features of operation of fractional grain cleaners and secondary seed cleaning separators

To obtain high-quality grain and seeds, it is necessary to clean the combine heap of weeds. Modern air-screen grain cleaners equipped with a screen cleaning systems, flat screens and a double-aspiration pneumatic system with pre-screen and post-screen cleaning channels are used. The fractional principle of post-harvest grain processing is promising. To create a universal grain cleaning machine to isolate the main fraction from the grain heap at the first stage of post-harvest processing, Voronezh State Agar University named after Emperor Peter I carried out theoretical and experimental studies, which made it possible to develop OZF-50, OZF-80 and SVS-30 separators. The machines have higher productivity, the original sieve design with an increased share of sorting sieves and an exclusive aspiration system. A number of new technical solutions have been used in the design of the separators, protected by patents of the Russian Federation. Theoretical prerequisites established the possibility of increasing the productivity 1.6-1.8 times according to GOST R 52325-2005. The total air consumption of the pneumatic system of grain cleaning machines can be reduced by 25-40%. Further improvement of separators requires a deeper study of the grain fractionation process, aerodynamic characteristics of aspiration systems, receiving and distribution devices, and establishment of close mutually beneficial relations between scientific institutions and agricultural engineering enterprises. This can contribute to the development of both domestic agricultural science and grain cleaning equipment production.

Modern Solutions for the Reconstruction of Gas Exhaust Ducts of Converters Operating in Ukraine

Nowadays most of the installed gas cleaning equipment of oxygen converters of metallurgical plants performs cleaning out of emissions of solid particles with final concentrations higher than acceptable. The inconsistency of the efficiency of the BOF-gas purification with the new emission standards entails the rejection of the emission permit and as a consequences the shutdown of metallurgical plants as well as the loss of the sales markets. In order to prevent the shutdown of the main shops of the metallurgical plants with the simultaneous implementation of appropriate environmental protection measures, it is important to launch the reconstruction of all gas-cleaning units of the converter exhaust ducts. The first element of the BOF-gas cooling and purification system is the BOF-gas cooler, its equipment is in close connection with the process equipment, thus the technological mode of steel production fully depends on its operating mode. The article describes the options of modernization of the exhaust duct of HRSG installed in the BOF-gas cleaning system. Besides, two options of BOF-gas cleaning system presented. In addition, two options of HRSG design: the old one and modernized – were compared.

Метод обработки акустической информации для контроля состояния клапанов газоочистного оборудования

The method is proposed for the implementation of acoustic monitoring of the state of the valves of gas cleaning equipment using a step-by-step model for recognizing acoustic events. In addition, the main features of typical valve malfunctions have been identified and a system for their recognition has been developed. The use of the developed model makes it possible to prevent 15% of equipment failures with 5.1% of cases of false positive predictions.