scholarly journals The follow-up control of the body sequencing process at the paint shop

Mechanik ◽  
2019 ◽  
Vol 92 (7) ◽  
pp. 462-464
Author(s):  
Jolanta Krystek ◽  
Sara Bysko

A modified method of follow-up production control that can be used in a multi-version car body sequencing process at the paint shop department is presented. The actual structure of the paint shop along with the buffer was subjected to tests (Car Sequencing Problem 4.0). The main goals of the research were to minimize the number of changeovers resulting from color changes and to synchronize these changeovers with forced, periodic cleaning of paint guns.

Mechanik ◽  
2017 ◽  
Vol 90 (7) ◽  
pp. 527-529 ◽  
Author(s):  
Jolanta Krystek ◽  
Sara Alszer

The article presents a problem of car sequencing from the perspective of the paint shop requirements. The issue of determining production orders depending on a color, on which a body is painted, has been considered in the literature several times. However, the assumptions proposed by scientists simplified greatly the analyzed problem in relation to the existing industrial solutions and requirements. The purpose of conducted analysis is to demonstrate a need for a completely new approach to sequencing problem, taking into account an actual structure of a car production line and organization of work in a paint shop.


Mechanik ◽  
2018 ◽  
Vol 91 (7) ◽  
pp. 529-531
Author(s):  
Jolanta Krystek ◽  
Sara Alszer ◽  
Szymon Bysko

Presented is the concept of paint shop operation for the automotive industry – Paint Shop 4.0, based on the ideas of Industry 4.0 and Digital Factory. A new approach to the issue of car body sequencing, taking into account the actual structure of the paint shop department with buffers, has been presented. In the created application, proprietary car body sequencing algorithms were implemented.


Author(s):  
Emek Gamze Köksoy Atiker ◽  
Fatma Betül Yeni ◽  
Peiman A. Sarvari ◽  
Emre Çevikcan

A car factory contains three main workshops; body shop, paint shop and assembly shop. Each of these three workshops has their set of constraints which have to be met in a production day by arranging the vehicles. The car sequencing problem is used to create a production sequence that meets these constraints. Car sequencing problem first handled in the literature by optimization of assembly constraints including ratio constraints. After that, color constraints are integrated to assembly constraints. At this chapter, the scenario in which high priority ratio constraints are primary, color constraints are secondary is tackled and a heuristic approach is proposed. For optimization of ratio constraints, an initial algorithm based on the greedy algorithm is used. The developed algorithm is coded and used on data set which is proposed by Renault at the ROADEF'2005 challenge. According to results, it is achieved the range of results which is achieved by ROADEF finalists.


2021 ◽  
pp. 251660852098428
Author(s):  
Vikas Bhatia ◽  
Chirag Jain ◽  
Sucharita Ray ◽  
jay Kumar

Objective: To report a case of young male with stroke and bilateral internal carotid artery (ICA) dissection. Background: Cervical Artery Dissection in Stroke Study trial has provided some insight on management of patients with ICA dissection. However, there is a need to modify the management strategies as per specific clinical scenario. Design/Methods: Case report and literature review. Results: A 45-year-old male presented with 1 month old history of acute onset numbness of right half of the body with slurring of speech. Computed tomography angiography showed complete occlusion of left cervical ICA just beyond origin with presence of fusiform dilatation and spiral flap in right extracranial cervical ICA. The patient was started on antiplatelets and taken for endovascular procedure using 2-mesh-based carotid stents. Patient was discharged after 3 days on antiplatelet therapy. At 1-year follow-up, there were no fresh symptoms. Conclusion: This case emphasizes the role of successful endovascular management of carotid dissection in a young male. These clinical situations may not be fully represented in trials, and a case-based approach is required.


2021 ◽  
pp. 136787792110035
Author(s):  
Mari Lehto ◽  
Susanna Paasonen

This article investigates the affective power of social media by analysing everyday encounters with parenting content among mothers. Drawing on data composed of diaries of social media use and follow-up interviews with six women, we ask how our study participants make sense of their experiences of parenting content and the affective intensities connected to it. Despite the negativity involved in reading and participating in parenting discussions, the participants find themselves wanting to maintain the very connections that irritate them, or even evoke a sense of failure, as these also yield pleasure, joy and recognition. We suggest that the ambiguities addressed in our research data speak of something broader than the specific experiences of the women in question. We argue that they point to the necessity of focusing on, and working through affective ambiguity in social media research in order to gain fuller understanding the complex appeal of platforms and exchanges.


Author(s):  
Teresa Paolucci ◽  
Francesco Agostini ◽  
Massimiliano Mangone ◽  
Andrea Torquati ◽  
Simona Scienza ◽  
...  

BACKGROUND: Fibromyalgia (FM) is a chronic condition characterized by widespread muscular or musculoskeletal pain of at least 3 months’ duration, occurring above and below the waist, on both sides of the body. OBJECTIVE: The aim of this study was to evaluate the effectiveness of a rehabilitation program based on motor imagery versus a conventional exercise program in FM in terms of pain, functional and psychological outcomes. METHODS: Twenty-nine female subjects were randomly assigned to a group receiving motor imagery-based rehabilitation (MIG) or to a control group (CG) performing conventional rehabilitation. Outcome assessments were performed before (T0) and after 10 sessions of treatment (T1) and at a 12-week follow-up (T2). Pain, function and psychological measurements were conducted by means of different questionnaires. RESULTS: Both treatments improved all outcomes at post-treatment (T1) and follow-up (T2). The MIG showed a significant improvement in anxiety disorder associated with FM with respect to the CG, as well as improvements in coping strategies. CONCLUSIONS: Rehabilitation treatment based on motor imagery showed a stronger effect on anxiety and coping behavior than traditional physiotherapy in patients with FM. Integrated psychological support would be desirable in this setting. Further research is needed to explore the aspects investigated in more depth.


2021 ◽  
pp. 239719832110043
Author(s):  
Miguel Angel Garcés Villalá ◽  
Carolina Zorrilla Albert

Introduction: Limited cutaneous systemic sclerosis with special manifestations (calcinosis cutis, Raynaud’s phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia) is part of the group of connective tissue diseases, these rare autoimmune systemic pathologies cause thickening and hardening of tissues in different parts of the body and can lead to complex disorders. Oral manifestations of systemic sclerosis may include limited ability to open the mouth, xerostomia, periodontal disease, enlarged periodontal ligament, and bone resorption of the jaw. Case Description: A 54-year-old Caucasian patient presented with oral pain, swallowing, phonation and chewing difficulties associated with dental instability, hygiene/handling difficulties and her main problem with microstomia, which prevented her from removing the skeletal prosthesis for 4 years, depriving her of social life. Gradual treatment with dental implants was diagnosed and planned to support a fixed total denture adapted to the ridge with self-cleaning characteristics. After implant insertion, panoramic radiographs with standardized parameters were taken to compare crestal bone levels at the time of prosthesis placement and with 10 years of follow-up. Conclusion: The average crestal bone loss of the 12 implants after the 10 years of follow-up was 1.26 mm for the maxilla and 1.17 mm for the mandible. The survival of the 12 support implants of two total fixed prostheses in a clinical/radiographic follow-up of 10 years was 100%. After 10 years of follow-up, the 12 implants inserted had a bone loss similar to that of healthy patients and no pathologies were registered, recovering function, aesthetics, and self-esteem. This therapy must be implemented before the interincisal distance decreases to 30 mm to allow intraoral surgical/prosthetic access. Implant-supported total fixed rehabilitation is a viable, predictable, and recommended therapy in patients with limited cutaneous systemic sclerosis.


Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1235
Author(s):  
Xiaohui Nan ◽  
Wenjia Lai ◽  
Dan Li ◽  
Jiesheng Tian ◽  
Zhiyuan Hu ◽  
...  

Derived from magnetotactic bacteria (MTB), magnetosomes consist of magnetite crystals enclosed within a lipid bilayer membrane and are known to possess advantages over artificially synthesized nanoparticles because of the narrow size distribution, uniform morphology, high purity and crystallinity, single magnetic domain, good biocompatibility, and easy surface modification. These unique properties have increasingly attracted researchers to apply bacterial magnetosomes (BMs) in the fields of biology and medicine as MRI imaging contrast agents. Due to the concern of biosafety, a long-term follow-up of the distribution and clearance of BMs after entering the body is necessary. In this study, we tracked changes of BMs in major organs of mice up to 135 days after intravenous injection using a combination of several techniques. We not only confirmed the liver as the well-known targeted organs of BMs, but also found that BMs accumulated in the spleen. Besides, two major elimination paths, as well as the approximate length of time for BMs to be cleared from the mice, were revealed. Together, the results not only confirm that BMs have high biocompatibility, but also provide a long-term in-vivo assessment which may further help to forward the clinical applications of BMs as an MRI contrast agent.


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