scholarly journals The projected effect from acceptance of constructive solutions to ensure the reliability of an industrial facility

Vestnik MGSU ◽  
2015 ◽  
pp. 68-79
Author(s):  
Tat’yana Vladimirovna Zolina ◽  
Pavel Nikolaevich Sadchikov
Keyword(s):  
Solid Wall ◽  
Extended Period ◽  
Industrial Building ◽  
Transverse Displacement ◽  
Structural Elements ◽  
Industrial Facility ◽  
Tower Crane ◽  
Before And After ◽  
Effective Option ◽  
Low Altitude

The article raises the problem of increasing the reliability of an industrial building bearing the entire set of frame disturbances. One of the ways to solve it is to mount extra structural elements, previously unrecorded in the design of the object. During the study we examined some of them: installation of mechanical transverse stiffening diaphragms; increasing the rigidity of the column part above the crane; arranging connecting rods located in levels of covering in the temperature seam and crane beams. Choosing the most effective option is determined by constructive and technological features of the research object. In our case, it acts as a one-storey industrial building of hull workshop of Astrakhan maritime shipyard, equipped with overhead cranes. Using this example the calculations, which were carried out, allow estimating the effect from acceptance of constructive solutions for installation of reinforced concrete diaphragms of stiffness at the edges of framework and increase the rigidity of the column part above the crane. During the study four options are considered for calculation scheme using wall panels. These should include representation of the device: as a solid wall; in two columns wide; for large aperture sizes; at the low altitude of the end of the opening. We have presented a comparative analysis of the results before and after the introduction of the corresponding elements in the calculating model of the research object. In the accepted system of constructive measures disc coating with high horizontal rigidity distributes the load on the front diaphragm. Increasing the stiffness of above the tower crane column part gives an additional effect, as an overhead crane is located closer to the cover and in case of the column of more developed section in the above the crane area, it passes the covering greater effort. In its turn, it prevents the transverse displacement and rotation, involving the entire framework into operation. The introduction of these measures contributes to: equal declining of displacements of stresses loads from the action of the nodal points of the frame, both in the level of brake beams and in the surface level; increasing the period of achieving the object’s maximal allowable condition and an extended period of its faultless operation.

scholarly journals EXPERIENCE OF INSPECTION OF DAMAGES OF METAL BEARING STRUCTURES

2021 ◽  
Vol 9 (4) ◽  
pp. 16-20
Author(s):  
Sergej Evtushenko ◽  
Marina Shutova ◽  
Boris Chernykhovsky
Keyword(s):  
Technical Condition ◽  
Elastic Region ◽  
Place Of Death ◽  
Industrial Building ◽  
Structural Elements ◽  
Ansys Software ◽  
Good Convergence ◽  
Truss Element ◽  
Metal Element ◽  
Before And After

The article deals with the damaged metal structural elements of the out-center compressed I-pillar, corner of a single corner and others. The work of the metal element in the elastic region was experimentally studied and compared with the results of FEM calculation using ANSYS software. Good convergence of results (less than 5%) is received at calculation of stresses in a place of death of the damaged basic brace of a truss of an industrial building. The reliability of the truss element with a defect (0.892) and without it (1.0) and the category of technical condition before and after damage are determined. Despite the fact that the voltage at the site of the defect does not exceed the maximum permissible, the category of technical condition changes from serviceable to serviceable category, and the design itself must be repaired with the elimination of damage on the support strip.

EXPERIMENTAL INVESTIGATION OF THE DURABILITY OF LOAD BEARING TIMBER-GLASS COMPOSITES UNDER THE EFFECTS OF ACCELERATED AGING

2019 ◽  
Vol 14 (2) ◽  
pp. 45-59 ◽  
Author(s):  
Halet Almila Arda Buyuktaskin ◽  
Mehmet Serkan Yatagan ◽  
Gulseren Erol Soyoz ◽  
Leyla Tanacan ◽  
Morvarid Dilmaghani
Keyword(s):  
Raw Materials ◽  
Accelerated Aging ◽  
Structural Elements ◽  
Atmospheric Conditions ◽  
Aging Effects ◽  
Glass Composite ◽  
Load Bearing ◽  
Glass Composites ◽  
Before And After

Although timber was used extensively as a structural material for traditional buildings in Turkey in the past, usage of structural timber decreased significantly over time and timber has been largely replaced by other materials. As timber is a natural, durable and sustainable material, it would be desirable to re-introduce timber structural elements to contemporary construction in a form that is appealing to industry. Timber-glass composite structural elements are potentially a good candidate for this purpose. To that end, a series of tests were conducted on load-bearing timber-glass composites in order to understand the long–term structural performance of the composite material under atmospheric conditions; to decrease the recurring cost of repair and maintenance; and to minimize the exhaustion of raw materials and energy. In this paper, the first part of this experimental work is presented, which focuses on the durability of timber-glass composite under the effects of accelerated aging, carried out on small-sized timber-glass composite specimens. Accelerated aging effects were observed under wetting-drying, freezing-thawing, UV effects, resistance to acids and high temperature. The mechanical strength of the timber-glass composite specimens before and after the effect of accelerated aging was measured by adhesion and shear strength tests and a comparative analysis of the results was carried out. The results of the experiments indicate that timber-glass composite is suitable to be used under protection from environmental conditions.

scholarly journals Influence of the Acoustic Cover of the Modular Expansion Joint on the Acoustic Climate in the Bridge Structure Surroundings

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2842
Author(s):  
Janusz Bohatkiewicz ◽  
Michał Jukowski ◽  
Maciej Hałucha ◽  
Marcin Dębiński
Keyword(s):  
Sound Level ◽  
Structural Elements ◽  
Expansion Joint ◽  
Expansion Joints ◽  
The Road ◽  
Sound Levels ◽  
Road Surfaces ◽  
Before And After ◽  
Bridge Structures

The noise generated at the interface between the wheels of vehicles and the road surface is well recognized in the literature worldwide. Many publications describe the phenomenon of reducing this kind of impact by silent road surfaces. A specific type of this noise is the sound generated by vehicles passing over the expansion joints of bridge structures. Due to the impulsive nature of this sound, it is very onerous for people living in the close vicinity of bridge structures. The passage of vehicles over expansion joints causes the formation of vibrations that are transmitted to the structural elements of bridge structures, which may cause the formation of the material sounds (especially arduous in the case of bridges with steel elements). An attempt to reduce this impact was made by making a prototype acoustic cover of the expansion joint on the selected bridge. The paper presents the results of research on the “in situ” acoustic effectiveness of this cover. Additionally, the noise was modelled in the object surroundings before and after the cover’s application. The acoustic efficiency of the cover in the whole measured frequency range was 5.3 dBA. In the narrower frequency bands (1/3 octave bands), larger sound level reductions were observed. The maximum sound levels measured under the tested dilatation were less than 10.0 dBA lower than the maximum sound levels measured under the reference dilatation.

scholarly journals Structural health monitoring and structural modifications of industrial building subjected to dynamic loading

2020 ◽  
Vol 313 ◽  
pp. 00021
Author(s):  
Robert Soltys ◽  
Michal Tomko ◽  
Ivo Demjan
Keyword(s):  
Load Transfer ◽  
Steel Structure ◽  
Industrial Building ◽  
Construction Work ◽  
Structural Behaviour ◽  
Structural Modifications ◽  
Power Spectral ◽  
Power Spectral Densities ◽  
Before And After ◽  
Complex Structural

A complex structural, static and dynamic review of an existing steel ceiling has been realised after two years of service and the completion of subsequent construction work. The construction work involved the reconstruction of a steel structure and structural modifications to the ceiling, which is part of the production hall. The construction work was realised in order to reduce the vibration response of the ceiling. The interior of the steel structure was supplemented by steel structural elements to share the load transfer of automatic washing machines. The structural behaviour of the ceiling was monitored before and after the modification. Accelerations of the ceiling were time-domain-monitored at specific locations. Measured data was transformed to the spectral-domain which is represented by power spectral densities.

Chant and Be Happy: The Effects of Chanting on Respiratory Function and General Well-Being in Individuals Diagnosed with Depression

2005 ◽  
Vol 15 (1) ◽  
pp. 61-64
Author(s):  
Molly Kenny ◽  
Raphael Bernier ◽  
Carey DeMartini
Keyword(s):  
Pilot Study ◽  
Beck Depression Inventory ◽  
Respiratory Function ◽  
Effective Means ◽  
Severe Depression ◽  
Extended Period ◽  
Well Being ◽  
Output Level ◽  
Preliminary Screening ◽  
Before And After

The effects of chanting on respiratory function and general well-being in individuals with mild to severe depression were tested in this pilot study. A total of 10 women and 1 man participated in this 8-week-long chanting program. All of the participants had been previously diagnosed with mild to severe depression. Several testing measures were employed. All subjects filled out a preliminary screening questionnaire and took the Beck Depression Inventory at the beginning of the study prior to their first chanting class and at the last meeting before chanting started. A 5-point Likert Scale Questionnaire was administered before and after each session. Spirometry was used to evaluate subjects' FVC, FEV, and FET. Each subject also self-administered pre and post peak/flow tests, taking the best of three forced exhalations before and after each chanting session. At the end of 8 weeks, our results showed that participants increased their breath control and overall expiratory output level. Additionally, 10 of our 11 subjects surveyed showed an increase in their overall mood on the Beck Depression Inventory. The score for one participant remained the same. Preliminary results from this pilot study indicate that chanting is an effective means of increasing people's moods in the immediate present, as well as over an extended period of time in which chanting is performed at least once per week.

scholarly journals Diapause behaviour of Zygogramma bicolorata (Coleoptera: Chrysomelidae), a biological control agent for Parthenium hysterophorus (Asteraceae), in Bangalore, India

1993 ◽  
Vol 83 (3) ◽  
pp. 383-388 ◽  
Author(s):  
K. P. Jayanth ◽  
Geetha Bali
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Extended Period ◽  
Control Agent ◽  
Parthenium Hysterophorus ◽  
Continuous Exposure ◽  
Zygogramma Bicolorata ◽  
Before And After ◽  
Summer Temperatures ◽  
Over Time

AbstractZygogramma bicolorata Pallister was introduced for biological control trials against the weed Parthenium hysterophorus (Asteraceae) in India. The insect entered diapause over an extended period of time between July and December in Bangalore. Diapausing adults burrowed into the soil, and emerged in May–June with the commencement of monsoon rains. Percentage diapause increased over time, peaking at 72% during November. Non-diapausing adults were capable of breeding, under laboratory conditions, during the winter. Some adults bred both before and after diapause, during two consecutive years. Soil moisture played an important role in providing the conditions for burrowing or emerging from the diapause chambers. The studies also showed that diapausing adults had to be exposed to the high summer temperatures, for termination of the diapause. It was possible to break diapause by continuous exposure to 30°C, 35°C and 40°C for 22 days, nine days and 10 hours, respectively, during February–March, about three months after its inception. This method can be used to initiate mass multiplication for carrying out releases early in the season.

scholarly journals Lipostructure Plus Platelet Rich Plasma Injections for Enophthalmos Treatment in Patients Carrying Prosthetic Eye- Safety and Efficacy

2017 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Unit Area ◽  
Platelet Rich Plasma ◽  
Lower Eyelid ◽  
Area Reduction ◽  
Before And After ◽  
Effective Option ◽  
Spss Software ◽  
One Year ◽  
Prosthetic Eye ◽  
Paired T Test

Purpose: To describe one-year functional and aesthetic outcomes in patients with post-enucleation enophthalmos who underwent lipostructure plus platelet-rich plasma injections. Materials and Methods: 26 patients treated with orbital lipostructure and three platelet rich plasma injections at 1, 2 and 6 months after surgery were retrospectively assessed. Photographs of all patients were taken preoperatively and at 1 and 12 months after surgery. The area of each eye lid esthetic unit/subunit was calculated, both in frontal and profile images. Statistical analysis was performed using SPSS software (SPSS Inc., Chicago, Illinois, USA). Paired t-test was used to compare the unit/subunit areas before and after surgery. Differences were considered significant when P <0.05. Results: Comparing baseline to 1-month images, an improvement of the enophthalmos appearance was observed in all patients. Analysis of each single esthetic units was performed, with an overall unit area reduction of 19.8%. Comparing the two postoperative images, the overall amount of resorption was 12.75%. The surgical procedure appeared to be well tolerated in all cases. Minor complications regarding the lower eyelid were recorded in 6 cases. Conclusions: lipostructure plus platelet rich plasma injections proved to be a valid and effective option for the treatment of post enucleation socket syndrome.

scholarly journals Approach to defining the object of energy efficiency assessment in industry

2021 ◽  
Vol 263 ◽  
pp. 05042
Author(s):  
Natalia Verstina ◽  
Natalia Solopova ◽  
Tatiana Meshcheryakova ◽  
Natalia Taskaeva ◽  
Natalia Shchepkina
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Practical Significance ◽  
Industrial Building ◽  
Industrial Facility ◽  
Industrial Facilities ◽  
Efficiency Assessment ◽  
Research Problems ◽  
Scientific Project ◽  
Definition Of

A scientific project focused on the development of a methodology for assessing energy efficiency classes of industrial facilities identified the primary research problems. The first and most important of them is the absence of a categorical and conceptual apparatus in the field of energy efficiency in industry, both in the Russian Federation and at the global level. This fact limits the definition of the system of indicators in the diagnosis of energy consumption. The study analyzed the definitions of an industrial facility contained in the current legislative and regulatory documents, as well as related assessment categories, such as: an industrial building and an industrial enterprise. The lack of unity in the definition of the identified categories, and in some cases their contradiction, demanded clarification of the category “industrial facility” as an object of diagnostics of energy consumption in industry, within the framework of an expert survey with the involvement of Russian and foreign experts in the field of energy. The practical significance of the results of the study is that the clarification of the category “industrial facility” is an integral attribute of the process of developing a methodological framework for assessing energy efficiency in industry, affecting its substantive part.

scholarly journals Evaluation of Industrial Buildings within the Scope of Renewal, Alsancak Tekel Warehouses

2021 ◽  
Author(s):  
Yonca Yılmaz ◽  
◽  
Dilara Genç ◽  
Hümeyra Birol
Keyword(s):  
Industrial Building ◽  
Industrial Structures ◽  
Cultural Legacy ◽  
Industrial Buildings ◽  
The Social ◽  
Before And After ◽  
History Of ◽  
Storage Structures ◽  
The City

Industrial structures are cultural legacy sites in need of protection that carry the social, cultural, historical and architectural properties of their respective eras into the present day. Due to the changing production demands and technology, these structures lost their usage value and have been rendered obsolete. The interventions implemented and new functions provided to ensure the continuity of industrial structures must be in accordance with the character of the building. Our study focuses on the renovation process of one of the first industrial premises of the city of İzmir Alsancak Tekel Storages located in Port Rear Area. Industrial building history in the region dates back to the 1900s, when industrial and storage structures have been built. A new master development plan that entered into force in 1989, conserning the fate of these industrial buildings. As the result of the passed legislation, old tekel storages have been transformed to offices and cultural centres. In the scope of this study the changes that occurred in order to refunction the Alsancak Tekel Storages have been inspected. As a method, a detailed literature review of the history of the region was made, and data on the buildings examined before and after the restoration were collected. As a result, the region’s historical development, status of the buildings before the restoration, architectural quality of the buildings after the restoration and role of the buildings in relation to the city have all been examined and collected data were evaluated comparatively.

Pharmacy-Led β-Lactam Allergy Interview (BLAI) Reduces Duration of Fluoroquinolones Within a Community Hospital

2019 ◽  
Vol 53 (6) ◽  
pp. 588-595 ◽  
Author(s):  
Elizabeth W. Covington ◽  
Beth Jobson Baldwin ◽  
Emily Warren
Keyword(s):  
Community Hospital ◽  
Skin Testing ◽  
Control Group ◽  
Cohort Design ◽  
Prospective Group ◽  
Before And After ◽  
Effective Option ◽  
Lactam Antibiotic ◽  
Quasi Experimental ◽  
The Impact

Background: Patients with reported β-lactam allergies often receive broad-spectrum antimicrobials and have been shown to experience a variety of negative health consequences, such as increased mortality, costs, readmission, and adverse reactions. Current literature focuses on β-lactam allergy skin testing but lacks evidence on β-lactam allergy interviews (BLAI) when skin testing is unavailable. Objective: This study aimed to test the impact of a pharmacy-led BLAI on duration of fluoroquinolones at a community hospital. Methods: A quasi-experimental design with a prospective cohort design and historical control group was used to assess patients with reported penicillin (PCN) allergies in a community hospital. The primary outcome was duration of fluoroquinolones before and after implementation of BLAI. Secondary outcomes included length of stay (LOS), percentage of patients switched to a β-lactam antibiotic, percentage of antimicrobial stewardship recommendations made/accepted, and discrepancies between allergy in medical record and interview-reported allergy. Nonparametric continuous data and medians were evaluated by Mann-Whitney U. Results: A total of 80 patients were included in the study (43 in the control group and 37 in the prospective group). Fluoroquinolone duration was reduced after the implementation of BLAI (3.7 vs 2.7 days, P = 0.027). In all, 49% of patients in the prospective group were switched to a β-lactam antibiotic after BLAI, with no allergic reactions, adverse effects, or impact on LOS. Conclusion and Relevance: BLAI resulted in a significant reduction in fluoroquinolone duration in patients with PCN allergies and may represent a safe and effective option for institutions lacking skin-testing capabilities.

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