Insight to the design of crane wheel aspect of E.O.T crane and study on E.O.T crane wheel life improvement

Bonded patches are widely used in several industry sectors for repairing damaged plates, cracks in metallic structures, and reinforcement of damaged structures. Composite patches have optimal properties such as high strength-to-weight ratio, easiness in being applied, and high flexibility. Due to recent rapid growth in the aerospace industry, analyses of adhesively bonded patches applicable to repairing cracked structures have become of great significance. In the present study, the fatigue behavior of the aluminum alloy, repaired by a double-sided glass/epoxy composite patch, is studied numerically. More specifically, the effect of applying a double-sided composite patch on the fatigue life improvement of a damaged aluminum 6061-T6 is analyzed. 3D finite element numerical modeling is performed to analyze the fatigue performance of both repaired and unrepaired aluminum plates using the Abaqus package. To determine the fatigue life of the aluminum 6061-T6 plate, first, the hysteresis loop is determined, and afterward, the plastic strain amplitude is calculated. Finally, by using the Coffin-Manson equation, fatigue life is predicted and validated against the available experimental data from the literature. Results reveal that composite patches increase the fatigue life of cracked structures significantly, ranging from 55% to 100% for different applied stresses.

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Study of Fault Detection of Bridge Crane Wheel based on Fourier Transform

2021 The 10th International Conference on Informatics, Environment, Energy and Applications ◽

10.1145/3458359.3458379 ◽

2021 ◽

Author(s):

Pengwei Guo ◽

Xiaoping Ma ◽

Wenmin Zhang ◽

Fang Gao ◽

Meng Liang ◽

...

Keyword(s):

Fourier Transform ◽

Fault Detection ◽

Bridge Crane ◽

Crane Wheel

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Quality of Life in Opioid Replacement Therapy: A Naturalistic Cross-Sectional Comparison of Methadone/Levomethadone, Buprenorphine, and Diamorphine Patients

European Addiction Research ◽

10.1159/000514192 ◽

2021 ◽

pp. 1-10

Author(s):

Stephanie Paula Elisabeth Guillery ◽

Rainer Hellweg ◽

Golo Kronenberg ◽

Ulrich Bohr ◽

Hagen Kunte ◽

...

Keyword(s):

Quality Of Life ◽

Replacement Therapy ◽

Psychological Functioning ◽

Treatment Options ◽

Chronically Ill ◽

Cross Sectional ◽

Life Improvement ◽

Methadone Patients ◽

Opioid Replacement Therapy

Background: Research on quality of life (QoL) of chronically ill patients provides an opportunity to evaluate the efficacy of long-term treatments. Although it is established that opioid replacement therapy is an effective treatment for opioid-dependent patients, there is little knowledge about physical and psychological functioning of QoL for different treatment options. Objectives: Altogether, 248 opioid-dependent patients receiving substitution treatment with either methadone/levomethadone (n = 126), diamorphine (n = 85), or buprenorphine (n = 37) were recruited in 6 German therapy centers. Methods: Sociodemographic data were collected. QoL – physical and psychological functioning – for different substitutes was assessed using the Profile of the Quality of Life in the Chronically Ill (PLC) questionnaire. Results: Patient groups were similar regarding age and duration of opioid dependence. Employment rate was significantly higher (p < 0.005, φ = 0.22) in the buprenorphine group (46%) compared to methadone (18%). Dosage adjustments were more frequent (p < 0.001, φ = 0.29) in diamorphine (55%) than in methadone (30%) or buprenorphine (19%) patients. Buprenorphine and diamorphine patients rated their physical functioning substantially higher than methadone patients (p < 0.001, η2 = 0.141). Diamorphine patients reported a higher psychological functioning (p < 0.001, η2 = 0.078) and overall life improvement (p < 0.001, η2 = 0.060) compared to methadone, but not compared to buprenorphine patients (both p > 0.25). Conclusion: Measurement of important QoL aspects indicates significant differences for physical and psychological functioning in patients receiving the substitutes methadone/levomethadone, diamorphine, and buprenorphine. This could be relevant for the differential therapy of opioid addiction.

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Background, Applications and Issues of the Experimental Designs for Mixture in the Food Sector

Foods ◽

10.3390/foods10051128 ◽

2021 ◽

Vol 10 (5) ◽

pp. 1128

Author(s):

Giacomo Squeo ◽

Davide De Angelis ◽

Riccardo Leardi ◽

Carmine Summo ◽

Francesco Caponio

Keyword(s):

Science And Technology ◽

Experimental Designs ◽

Food Science ◽

Modified Atmosphere ◽

Global Knowledge ◽

Food Sector ◽

Life Improvement ◽

Technology Modeling ◽

Mixture Designs ◽

Simplex Lattice

Background: Mixtures play a key role in Food Science and Technology. For studying them, rational approaches should be used. In detail, the experimental designs for mixtures are useful tools for studying the effects of ingredients/components in formulations. Results: Food Science and Technology is the fourth category among the total records considered in this review. The applications span from food formulation to the composition of modified atmosphere, shelf-life improvement and bioactives extraction. However, the majority of the studies regards few products and ingredients. Simplex-lattice and simplex-centroid designs are the most common used, although some optimal designs, such as the D-optimal, have also interesting applications. Finally, some issues are highlighted, which basically regard the interpretation of the models coefficients and the lack of model validation. Conclusion: In the last decade, mixture designs have been fairly used in the field of Food Science and Technology. Modeling the response(s) allows researchers to achieve a global knowledge of the system under study within the defined experimental domain. However, the majority of application has regarded limited classes of products, and thus an increase in the spectrum of applications is desired.

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