bluuebunny/crossref_metadata_2025_split huggingface dataset:
Very Low Cycle Fatigue Evaluation of Pipe Elbow and Experimental Validations: I- Quasi-Static Cyclic Loading Test
Authors: Lee Jong-Min , Kim Yun-Jae , Song Hyun-Seok , Kim Jin Weon 
Published: November 2023

Abstract
In this paper, pipe elbow under cyclic in-plane bending loads was evaluated using strain-based evaluation methods. For strain-based evaluation methods, acceptance criteria for local failure presented in ASME BPVC Sec. VIII and the void growth/shrinkage model were considered. The void growth/shrinkage model is evaluation model that incorporates the void growth effect to the acceptance criteria presented in ASME BPVC Sec. VIII. For the validation of evaluation models, predicted failure cycle of pipe elbow was compared with experimental results. The ASME BPVC Sec. VIII method gives very conservative results. The reason of this conservatism is that the void shrinkage effect under compressive loading is not considered. Therefore, the void growth/shrinkage model incorporating void shrinkage effect significantly improving evaluation results compared to result of ASME BPVC Sec. VIII, and crack initiation cycle can be predicted much closer but still smaller than the experimental result.
Mechanical Responses of 316L Stainless Steel Printed by Wire Arc Additive Manufacturing With Different Thermal Histories
Authors: Tang Wei , Giuliano Dominic , Martinez Oscar , Gussev Maxim , Nycz Andrzej , An Ke , Meyer Luke , Masuo Chris , Yu Dunji , Carter William , Walters Alex , Wallace Riley , Vaughan Derek 
Published: November 2023

Abstract
In this paper, 316L stainless steel walls were printed using single-bead pass and multiple-bead pass wire arc additive manufacturing (WAAM), which represent the internal basket wall and external wall of a spent nuclear fuel (SNF) canister, respectively. Scanning electron microscopy (SEM) microstructure characterization and tensile tests at room temperature (21 °C) and elevated temperature (250 °C, the maximum temperature at the center of a SNF canister.) were performed on specimens extracted along the length and height directions of the printed walls. Results showed that grain morphology, grain angles, and retained ferrite are different between the two printed walls, which received different heat input in WAAM. The single-bead pass printed wall exhibited higher yield strength than the multiple-bead pass printed wall because of more retained ferrite and larger portion of random-high angle boundaries (RHAB) grains.
Case Study on the Affect of Hydrogen on Ground Storage Tanks Designed to ASME Section VIII
Authors: Peters Daniel T. , Ritter Erick R. 
Published: November 2023

Abstract
The effect of hydrogen on the cyclic life of stainless-steel tanks is widely debated. Many ground storage tanks built for the hydrogen economy, and particularly for hydrogen fueling stations, are designed to ASME Section VIII, Division 3 [1] for pressures between 7,500 and 15,000 psi (517–1034 bar). ASME Section VIII, Division 3, Article KD-10 has rules for these hydrogen vessels regarding the assessment of life using fracture mechanics. This assessment leverages empirical testing for crack growth rate and determination of the threshold intensity factor for hydrogen assisted cracking. Additionally, Code Case 2938 [2], Hydrogen Crack Growth Rate Constants, Threshold Stress Intensity Factor, KIH, and Critical Crack Size Requirements for SA372 and SA-723 Steels in ASME Section VIII Division 3, has been developed.
While rules have been established for the ASME Section VIII, Division 3 design, there is controversy regarding what impact hydrogen has on pressure vessels designed to either ASME Section VIII, Division 2 [3] or ASME Section VIII, Division 1 [4]. This paper is a case study to provide a comparison of the life assessment of various vessels in hydrogen and dry air. This study will attempt to provide background in the discussion for the magnitude of impact that hydrogen has on the life of vessels operated at various pressure ratings when designed to each of the three (3) ASME Section VIII Divisions.
Effect of Pitch Spacing on Fluidelastic Forces in a Rotated Triangular Array
Authors: Darwish Sameh , Mureithi Njuki , Cho Minki 
Published: November 2023

Abstract
Time-averaged quasi-static forces are significant in the study of the fluidelastic instability of tube arrays. Furthermore, measuring the fluid force phase from the unsteady force measurements could be used to directly investigate the dynamic behaviour of an array and predict the array instability onset. Force measurements were previously performed for a rotated triangular array with spacing ratio P/D = 1.5. In this paper, a more compact rotated triangular array is studied following the same measurement approach. This rotated triangular array has a pitch ratio P/D = 1.33. Determining the relationship between the fluid force coefficients used in the quasi-steady model, and fluid force phase used to predict the fluid damping, is one of the main objectives of this work. This is in order to relate the fluid forces to the array pitch spacing. This should be a step toward generalizing the quasi-steady model for the rotated triangular array for various pitch ratios. In this paper, the quasi-static fluid forces are measured in single phase (water) and two-phase (air-water) cross flow in the streamwise direction. The quasi-steady model is then solved, using the forces, to predict the fluidelastic instability onset of the array. Model results are also directly compared with vibration experimental results.
Corrosion Assessment Models for Predicting Remaining Strength of Corroded Thick-Walled Pipelines
Authors: Zhu Xian-Kui , Wiersma Bruce , Johnson William R. , Sindelar Robert 
Published: November 2023

Abstract
Corrosion is a major threat to pipeline integrity. Over the past half century, many corrosion assessment models have been developed for determining the remaining strength of corroded pipelines, including the traditional industry codes of ASME B31.G, Modified B31.G and PRCI RSTRENG, and numerous newer corrosion criteria of LPC, PCORRC and their modified models. However, all available corrosion assessment models are applicable to large diameter, thin-walled line pipes with a diameter to wall thickness ratio D/t ≥ 20. In practice, there are many small-diameter, thick-walled pipelines with a D/t ratio &lt; 20, and thus an adequate corrosion assessment model is needed for predicting remaining strength for corroded thick-walled pipelines.
This paper first reviews the burst pressure models for defect-free thin and thick-walled pipelines and a variety of corrosion assessment models for thin-walled pipelines. On this basis, three corrosion assessment models are developed for thick-walled pipelines in terms of the average shear stress yielding theory. A large set of burst pressure test data is employed to evaluate and validate the proposed corrosion assessment models for thick-walled pipelines in a wide range of pipeline steel grades. The comparison shows that the proposed thick-wall corrosion models can more accurately predict the remaining strength for both thin and thick-walled pipelines with corrosion defects.
Applicability Analysis of Thermoplastic Material As Liner Pipe for Trenchless Rehabilitation of Thermal Pipelines
Authors: Wang Zhongzhen , Shi Jianfeng , Zhang Liang 
Published: November 2023

Abstract
Thermal pipelines are an essential part between the heat source and the user. Thermal pipeline failure frequently occurs with expanding the systems’ scale and increasing elapsed service life. These faulty and damaged pipelines need to be repaired and replaced in time. Trenchless rehabilitation technology has the advantages of high construction efficiency and a small impact on traffic and the environment, so it is the current research focus of pipeline rehabilitation technology. The liner pipe made of thermoplastic materials such as Polyethylene (PE) has been used in drainage, oil, and other fields, and the relevant standards are gradually forming. Nevertheless, for the thermal pipeline, the transmission medium is hot water or hot steam, usually temperature above 80°C. The operating temperature is higher than the operating temperature of conventional thermoplastic pipes.
Therefore, in this paper the typical thermodynamic properties of 8 engineering plastics were tested, such as PE, Polyamide (PA), and Polyformaldehyde (POM). Combined with the test results and the operational characteristics of the thermal pipeline, the applicability of 8 kinds of engineering plastics as the lining materials of the thermal pipeline was analyzed. The analysis results can provide a reference for determining the operating temperature of the engineering plastics. This article preliminarily determined that Polyethylene of raised temperature resistance (PE-RT) is suitable as the material of the 80 °C thermal liner pipe.
Research on the Influence of the Liner Crack Size and Location on Fatigue Life of 70MPa Type III Cylinder
Authors: Wang Yulin , Li Qinan , Ha Wenlong , Zhao Yiming , Hua Zhengli , Wei Liqing , Gu Chaohua 
Published: November 2023

Abstract
At present, the researches on the factors affecting the fatigue life of type III hydrogen storage cylinder mainly focus on the structure and technological parameters of the cylinder, and there are few studies on the type III cylinder with initial liner cracks. In this paper, a finite element model of fatigue analysis for 70MPa Type III cylinder based on fracture mechanics method was established. The influences of the depth, length, and position of the axial semi-elliptical initial liner crack on the fatigue life of the cylinder were discussed, and the tolerance size of inner surface crack was calculated. The results show that the cylinder fatigue life increased significantly with the decrease of the crack size. The fatigue life of the cylinder is more sensitive to the change of crack depth than the change of crack length. According to GB/T 35544, the fatigue life requirement of the cylinder studied in this paper is 7500 cycles of filling and releasing hydrogen. For the inner surface axial crack, when the crack depth-length ratio is 1/3, the maximum allowable crack depth is 0.167 mm; when the crack depth is 0.2 mm, the maximum allowable crack length is 0.443 mm. Furthermore, under the same initial crack size, the fatigue life of the cylinder with a crack on the outer surface is longer than that on the inner surface.
Design of Torispherical and Ellipsoidal Heads in Pressure Vessel and Review of Restrictions for the Onset of Buckling-Internal Pressure in ASME Sec.VIII Div.1: A Comparative Study of Various Codes of Construction
Authors: Pathre Sujay S. , Mathkar Ameya , Gopalakrishnan Shyam 
Published: November 2023

Abstract
Pressure Vessels are made with various types of end closures. Commonly used end closures are torispherical dished ends, ellipsoidal dished ends, and hemispherical dished ends. For the design of these end closures the rules provided in ASME Sec. VIII Div. 1 [1] and ASME Sec. VIII Div. 2[2] differ significantly, and a similar phenomenon could be observed when a review is done against popular International Codes for pressure vessel design like PD 5500 [3], and EN 13445[4]. The difference in the design methodology is due to the design approach used in developing the equations in these Codes of Construction.
ASME Sec. VIII Div.1 in Para. UG-32(c) and (d) for the design of all ellipsoidal heads and torispherical heads subject to internal pressure having ts/L ratio less than 0.002 directs the user to Para. 1-4 (f) of Mandatory Appendix 1 in code [1]. The requirements in Para. 1-4 (f) are added to prevent the possibility of buckling of the heads as the thickness is reduced as compared to the spherical radius. Buckling as a mode of failure is only envisaged when the ts/L ratio is less than 0.002 and no check on buckling is required when the ts/L ratio is greater or equal to 0.002.
If we refer to other Codes like ASME Sec. VIII Div.2, PD 5500 and EN 13445, one can observe that the design of the dished head is based on plastic collapse and buckling failure approach and these Codes make it mandatory to check both the plastic collapse and buckling failure modes in all the circumstances.
The work reported in this paper is an attempt to reviews the requirements of ASME Section VIII Division 1 for thin-walled dished heads with large internal diameter whose ratio of ts/L lie near the vicinity of 0.002 and comparative study of requirements imposed by ASME Section VIII Division 1 is compared with other International Codes.
Also, FEA of the dished ends is carried out to study the stress pattern and to determine the stresses induced, buckling. Further comparison is made against various Codes’ classical formula requirements.
What’s New in ASME PCC-1—2022?
Authors: Rodery Clay D. 
Published: November 2023

Abstract
The latest edition of ASME PCC-1 was released in September 2022. This edition represents a shift in the document as it transitions from a set of guidelines to a standard. Additionally, the document adopts a change in writing style in accordance with the ASME Style Guide, with an objective of providing better clarity in presenting the technical content of the document. This paper has several purposes. The first is to outline the process in how the document was rewritten, to whom was the document targeting, and to categorize the technical content into choices or selections that needed to be made, and instructions that were recommended for inclusion into the assembly procedure. The insights gained during the rewrite may prove to be insightful to others who are considering similar types of clarity rewrites of their standards. The second purpose of this paper is to identify and summarize the primary changes that appear in the 2022 edition of ASME PCC-1, for the benefit of those bolted joint practitioners who will be using the document. Finally, the paper will identify some elements that are in the course of preparation that may be issued before the next edition in the form of an early implementation Case.
“Learn to Function in the System”: The Organizational Socialization of Urban Physical Educators
Authors: Pennington Colin G. , Werber-Zion Galila , Prewitt-White Tanya 
Published: November 2023

Purpose: The purpose of this study was to explore how urban physical educators’ experiences influence their motivations toward vocational persistence emphasizing health and fitness. Methods: Participants included 16 urban physical educators who participated in semistructured interviews about their experiences teaching in urban settings. For minority youths, who predominantly attend urban public schools, fitness rates are lower than the national average. Physical education has been discussed as a potential solution to combating this public health trend; however, considering Common Core reforms in public education by which health and physical education has been de-emphasized as a curricular requirement, scholars are pursuing knowledge of how the experiences of urban physical educators are evolving. Using occupational socialization as the operating theoretical framework, this study seeks to explore how 16 urban physical educators’ experiences are evolving with the changes in public education, including administrative support and other indicators of marginalization and attrition. Results: Qualitative data analysis resulted in the construction of six themes which suggest that teaching students to develop and maintain a healthy lifestyle remains a powerful motivator for urban physical educators’ persistence despite feelings of marginalization and burnout. Conclusions: The authors provide practical suggestions for practitioners and scholars to overcome feelings of marginalization and lack of resources.
Repurposing a human acetyl-CoA carboxylase inhibitor firsocostat to treat fungal candidiasis alone and in combination
Authors: Chen Tianyu , Yao Jing , Quan Keao , Xu Jingchen , Hang Xudong , Tong Qian , Liu Genyan , Luo Peipei , Zeng Liping , Feng Ganzhu , Bi Hongkai 
Published: November 2023

ABSTRACT

Opportunistic fungal infections, particularly caused by
Candida albicans
, remain a common cause of high morbidity and mortality in immunocompromised patients. The escalating prevalence of antifungal drug resistance necessitates the immediate exploration of alternative treatment strategies to combat these life-threatening fungal diseases. In this study, we investigated the antifungal efficacy of firsocostat, a human acetyl-CoA carboxylase (ACC) inhibitor, against
C. albicans
. Firsocostat alone displayed moderate antifungal activity, while combining it with voriconazole, itraconazole, or amphotericin B exhibited synergistic effects across almost all drug-sensitive and drug-resistant
C. albicans
strains tested. These observed synergies were further validated in two mouse models of oropharyngeal and systemic candidiasis, where the combination therapies demonstrated superior fungicidal effects compared to monotherapy. Moreover, firsocostat was shown to directly bind to
C. albicans
ACC and inhibit its enzymatic activity. Sequencing spontaneous firsocostat-resistant mutants revealed mutations mapping to
C. albicans
ACC, confirming that firsocostat has retained its target in
C. albicans
. Overall, our findings suggest that repurposing firsocostat, either alone or in combination with other antifungal agents, holds promising potential in the development of antifungal drugs and the treatment of candidiasis.
Closed genomes of four multidrug resistance
Salmonella enterica
serotype Infantis isolated in Costa Rica
Authors: Duarte Francisco , Cordero Estela , Calderon Melany , Godinez Adriana , Ross Bruce , Allard Marc , Gonzalez-Escalona Narjol 
Published: November 2023

ABSTRACT

Here, we report the complete genome of four
S. enterica
Infantis isolated in Costa Rica from human, poultry rinse, and raw chicken meat from 2017 to 2019. All genomes belonged to ST32 and carried a 310-kb plasmid with many antimicrobial resistance genes including the
bla
CTX-M65
gene.
Complete genomes of
Limosilactobacillus portuensis
and
Limosilactobacillus vaginalis
isolated from the urine of postmenopausal women
Authors: Nguyen Vivian H. , Sharon Belle M. , Shipman Braden M. , Zimmern Philippe E. , De Nisco Nicole J. 
Published: November 2023

ABSTRACT

There is frequent evidence that
Limosilactobacillus vaginalis
colonizes female genitourinary tracts but few reports of
Limosilactobacillus portuensis
. Their role in urinary tract infection (UTI) is unclear. We present the first complete genome of
L. portuensis
and a complete genome of
L. vaginalis
isolated from postmenopausal women with varying UTI histories.
Integrated multi-omics reveals the roles of cecal microbiota and its derived bacterial consortium in promoting chicken growth
Authors: Zhang Meihong , Li Depeng , Yang Xinyue , Wei Fuxiao , Wen Qiu , Feng Yuqing , Jin Xiaolu , Liu Dan , Guo Yuming , Hu Yongfei 
Published: November 2023

ABSTRACT

Growing evidence has shown a close connection between gut microbiota and chicken growth performance; however, the crosstalk between microbes and chicken host remains elusive. Here, we integrated multi-omics approaches, fecal microbiota transplantation, and body weight-associated bacterial consortium to investigate the host-microbiota interactions in different body weight chickens. Microbial profiling analysis showed that uncultured
Barnesiellaceae
,
Lactobacillus
,
Bacillus
,
Ruminococcaceae UCG-004
, and
Ruminococcaceae UCG-014
were highly enriched in the high body weight (HBW) chickens. The combination of
Lactobacillus
and
Bacillus
had 95.1% accuracy in discriminating HBW from low body weight chickens. Lipids and lipid-like molecules were found to be more abundant in the HBW chickens, and the differentially expressed cecal genes were enriched in the peroxisome proliferator-activated receptor (PPAR) signaling pathway and calcium signaling pathway. Correlations among the weight-associated genera, gut content metabolites, and gut gene expression were established, and fecal microbiota transplantation from HBW microbiota to newly born chicks increased the chicken antioxidant status, gut sugar transport, and immunity. A total of 67 strains belonging to
Lactobacillus
and
Bacillus
were isolated from the HBW chickens by the targeted culturomics method. Among six pairwise combinations of four selected strains, the consortium consisting of
Limosilactobacillus reuteri
CML393 and
Bacillus velezensis
CML396 significantly improved the chicken growth performance and gut health and influenced the cecal microbiota, metabolites, and gene expression. Further
in vitro
and
in silico
analyses indicated that
L. reuteri
CML393 and
B. velezensis
CML396 were less competitive but more cooperative than other pairwise combinations tested.

IMPORTANCE
The improvement of chicken growth performance is one of the major concerns for the poultry industry. Gut microbes are increasingly evidenced to be associated with chicken physiology and metabolism, thereby influencing chicken growth and development. Here, through integrated multi-omics analyses, we showed that chickens from the same line differing in their body weight were very different in their gut microbiota structure and host-microbiota crosstalk; microbes in high body weight (HBW) chickens contributed to chicken growth by regulating the gut function and homeostasis. We also verified that a specific bacterial consortium consisting of isolates from the HBW chickens has the potential to be used as chicken growth promoters. These findings provide new insights into the potential links between gut microbiota and chicken phenotypes, shedding light on future manipulation of chicken gut microbiota to improve chicken growth performance.