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Book ; Online: Physical Metallurgy of Metals and Alloys

Gong, Pan / Li, Maojun / Han, Guangchao / Wang, Xin

2023

Keywords	Technology: general issues ; History of engineering & technology ; Fe-rich Al-Si alloy ; β-Al5FeSi phase ; cooling rate ; melt spinning ; microstructure ; strengthening mechanisms ; Zn-Mg-Ti alloy ; biodegradable metals ; mechanical properties ; cytotoxicity ; Fe-B-W alloy ; manganese ; aluminum ; molten zinc ; microanalysis ; corrosion ; hydrogenated-dehydrogenated titanium powder ; laser directed energy deposition ; mechanical property ; radio frequency plasma technique ; high entropy alloy ; bulk metallic glass ; similar element substitution/addition ; glass forming ability ; lattice distortion ; sapphire ; surface metallization ; deposition mechanism ; wettability ; low-temperature joining ; silver alloy bonding wire ; bonding strength ; vulcanization resistance ; cathodic passivation ; Mg-Nd alloy ; precipitate ; eutectic growth ; modelling and simulation ; recrystallization ; microstructure-property characterization simulation and modeling ; heat treatment and surface treatment ; TC4 alloy ; EBCHM ; aging treatment ; glass-forming ability ; corrosion behavior ; amorphous alloy ; phase transformation ; mechanical behavior ; corrosion wear resistance ; gear grinding ; white layer ; grinding temperature ; surface integrity ; AlSi10Mg alloy ; friction stir processing ; grain boundary ; texture ; dynamic recrystallization ; silver wire ; wire bonding ; chloride ions ; ion migration ; galvanic corrosion ; Cu-15Ni-8Sn alloys ; grain size ; solution treatment ; microalloying ; microstructural evolution ; laser-powder bed fusion ; MgAl2O4 ; TiB2 ; metallothermic reduction ; SHS powder metallurgy ; combustion wave propagation ; HSLA steel ; microstructural characterization ; laser welding ; thick plate ; corrosion resistance ; high entropy alloys ; lightweight ; magnesium alloys ; ultrasound treatment ; solution ; aging ; Mg17Al12 ; converter ; vortex ; flow field analysis ; numerical simulation ; steel ball ; skew rolling ; cold forming ; stainless steel ; copper-scandium CuSc ; copper alloy ; differential scanning calorimetry DSC ; precipitation kinetics ; cold-working ; cold-rolling ; activation energy ; Kissinger method
Language	English
Size	1 electronic resource (324 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel
Document type	Book ; Online
Note	English
HBZ-ID	HT030381955
ISBN	9783036578057 ; 3036578056
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Peripherally inserted central catheter related pericardial effusion/cardiac tamponade in neonates: Analysis of two cases and literature review.

Liu, Yucen / Li, Maojun / Shi, Wei / Tang, Binzhi

Medicine

2023 Volume 102, Issue 43, Page(s) e35779

Abstract: Rationale: Peripherally inserted central catheter (PICC)-related pericardial effusion/cardiac tamponade is a rare but fatal complication which cause a high mortality if not timely diagnosed and treated. However, the atypical manifestations and the rapid ...

Abstract	Rationale: Peripherally inserted central catheter (PICC)-related pericardial effusion/cardiac tamponade is a rare but fatal complication which cause a high mortality if not timely diagnosed and treated. However, the atypical manifestations and the rapid deterioration present challenges for neonatologists, and there has been limited investigation reported globally to date. Furthermore, a systematic review and comprehensive summary of clinical management are lacking. The significance of this article lies in emphasizing the importance of maintaining vigilance in high-risk neonates and implementing effective management strategies for PICC-related pericardial effusion/cardiac tamponade, thereby contributing to saving more lives. Patient concerns: In the current report, we discuss 2 cases of neonatal pericardial effusion/cardiac tamponade following PICC catheterization. Diagnosis: The first case was diagnosed based on forensic autopsy and the second case was diagnosed by bedside echocardiography. Interventions and outcomes: The first case was treated conservatively and the second case underwent pericardiocentesis, unfortunately both were died. Lessons: Once sudden hemodynamic or respiratory abnormalities are detected in neonates with PICC placement, particularly in the preterm infants, prompt diagnosis by cardiac ultrasound is required to verify pericardial effusion/cardiac tamponade and immediate pericardiocentesis or pericardiotomy is necessary to improve survival.
MeSH term(s)	Infant ; Infant, Newborn ; Humans ; Pericardial Effusion/etiology ; Pericardial Effusion/therapy ; Cardiac Tamponade/etiology ; Cardiac Tamponade/therapy ; Cardiac Tamponade/diagnosis ; Infant, Premature ; Catheterization, Peripheral/adverse effects ; Catheters/adverse effects
Language	English
Publishing date	2023-11-01
Publishing country	United States
Document type	Systematic Review ; Case Reports ; Journal Article
ZDB-ID	80184-7
ISSN	1536-5964 ; 0025-7974
ISSN (online)	1536-5964
ISSN	0025-7974
DOI	10.1097/MD.0000000000035779
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Grinding Force and Surface Formation Mechanisms of 17CrNi2MoVNb Alloy When Grinding with CBN and Alumina Wheels.

Jiang, Xiaoyang / Liu, Ke / Si, Mingda / Li, Maojun / Gong, Pan

Materials (Basel, Switzerland)

2023 Volume 16, Issue 4

Abstract: The 17CrNi2MoVNb alloy is widely used for manufacturing heavy-duty gears in vehicles' transmission systems, where grinding is a significant process affecting gears' working performance and service life. This work comprehensively analyzed the grinding ... ...

Abstract	The 17CrNi2MoVNb alloy is widely used for manufacturing heavy-duty gears in vehicles' transmission systems, where grinding is a significant process affecting gears' working performance and service life. This work comprehensively analyzed the grinding force, surface morphology, and surface roughness when grinding 17CrNi2MoVNb alloy using alumina and CBN grinding wheels. Results showed that the maximum normal grinding force from the CBN wheel was only ~67% of the one from the alumina wheel. Due to the small size and limited cutting depth of CBN grains, the grinding force increased by about 20% when the grinding depth increased from 0.02 to 0.03 mm for CBN grinding wheels. Surface defects, including cavities and material tearing, were mainly found on the ground surface when using an alumina grinding wheel. The surface roughness Ra recorded from the CBN grinding wheel mainly ranged from 0.263 to 0.410 μm, accounting for less than 40% of the one from the alumina grinding wheel. The information from this work could provide benchmark data and references for optimizing grinding tools and parameters when manufacturing gears in the vehicle industry.
Language	English
Publishing date	2023-02-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16041720
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: The gut microbiota regulates the depressive-type behaviors and inflammatory processes after severe burn injuries in mice.

Chen, Ling / Xie, Langlang / Tan, Jing / Li, Ning / Luo, Yue / Li, Maojun / Zhang, Shi / Wang, Zonghua

Heliyon

2024 Volume 10, Issue 4, Page(s) e25617

Abstract: An emerging number of studies have recently revealed the correlation between burn injuries and psychological disorders. Gut microbiota and inflammatory factors may play a vital role in this process. Nevertheless, there are few studies conducted to ... ...

Abstract	An emerging number of studies have recently revealed the correlation between burn injuries and psychological disorders. Gut microbiota and inflammatory factors may play a vital role in this process. Nevertheless, there are few studies conducted to disclose the potential mechanism of the gut microbiota between depression and burn injuries. In this study, we constructed a burn model of C57BL/6 mice, which showed that the symptom of depression became more and more severe with the burn of mice lasted longer. Meanwhile, there are significant differences of composition of gut microbiota among mice before and after burn. Then, we tested the inflammatory factors in the brain and peripheral blood, which showed an increased expression of Iba1, VWF, TNF-α and IL-6, and a decreased expression of IL-10 in burn mice. In addition, the expression of zonula occludens-1 (ZO-1) in cecum showed a down-regulation in burn mice, which indicated impaired intestinal barrier function. Lastly, the crossing fecal microbiota transplantation (FMT) and cohousing experiment were conducted to determine the functions of cross-transplantation of fecal microbiota on the depressive-type behaviours in burned mice. According to the score of Tail suspension test (TST), the burn mice were divided into two groups: Resilient mice (no-depressed mice) and Abnormal mice (depressed mice). After abnormal mice were transplanted with fecal microbiota of resilient mice, the symptom of depression was improved, and the expression of TNF-α, IL-6 and IL-10 return to normal levels (
Language	English
Publishing date	2024-02-10
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e25617
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Experimental Investigation on Microstructure Alteration and Surface Morphology While Grinding 20Cr2Ni4A Gears with Different Grinding Allowance Allocation.

Wang, Rong / Peng, Size / Zhou, Bowen / Jiang, Xiaoyang / Li, Maojun / Gong, Pan

Materials (Basel, Switzerland)

2023 Volume 16, Issue 18

Abstract: Transmission gear is a key component of vehicles and its surface integrity affects the safety of the transmission system as well as the entire mechanical system. The design and optimization of allowances in form grinding are important for improving ... ...

Abstract	Transmission gear is a key component of vehicles and its surface integrity affects the safety of the transmission system as well as the entire mechanical system. The design and optimization of allowances in form grinding are important for improving dimensional accuracy and machining efficiency during the manufacturing of heavy-duty gears. This work aims to investigate the effects of grinding allowance allocation on surface morphology, grinding temperature, microstructure, surface roughness, and microhardness fluctuation during the form grinding of 20Cr2Ni4A gears. Results indicated that grinding temperature was primarily influenced by rough grinding involving significant grinding depths exceeding 0.02 mm. The ground surface exhibited slight work hardening, while thermal softening led to a reduction in microhardness of around 40 HV. Ground surface roughness Ra varied from 0.930 μm to 1.636 μm, with an allowance allocation of the last two passes exerting the most significant influence. Analysis of surface and subsurface microstructures indicated that a removal thickness of 0.02 mm during fine grinding was insufficient to eliminate the roughness obtained from rough grinding. Evident ridges, gullies, and surface defects such as material extraction, adhesion, and plastic deformation were also observed. The proposed grinding strategy was validated in practical manufacturing with good surface quality and geometrical accuracy.
Language	English
Publishing date	2023-09-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16186111
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Rock Particle Motion Information Detection Based on Video Instance Segmentation.

Chen, Man / Li, Maojun / Li, Yiwei / Yi, Wukun

Sensors (Basel, Switzerland)

2021 Volume 21, Issue 12

Abstract: The detection of rock particle motion information is the basis for revealing particle motion laws and quantitative analysis. Such a task is crucial in guiding engineering construction, preventing geological disasters, and verifying numerical models of ... ...

Abstract	The detection of rock particle motion information is the basis for revealing particle motion laws and quantitative analysis. Such a task is crucial in guiding engineering construction, preventing geological disasters, and verifying numerical models of particles. We propose a machine vision method based on video instance segmentation (VIS) to address the motion information detection problem in rock particles under a vibration load. First, we designed a classification loss function based on Arcface loss to improve the Mask R-CNN. This loss function introduces an angular distance based on SoftMax loss that distinguishes the objects and backgrounds with higher similarity. Second, this method combines the abovementioned Mask R-CNN and Deep Simple Online and Real-time Tracking (Deep SORT) to perform rock particle detection, segmentation, and tracking. Third, we utilized the equivalent ellipse characterization method for segmented particles, integrating with the proportional calibration algorithm to test the translation and detecting the rotation by calculating the change in the angle of the ellipse's major axis. The experimental results show that the improved Mask R-CNN obtains an accuracy of 93.36% on a self-created dataset and also has some advantages on public datasets. Combining the improved Mask R-CNN and Deep SORT could fulfill the VIS with a low ID switching rate while successfully detecting movement information. The average detection errors of translation and rotation are 5.10% and 14.49%, respectively. This study provides an intelligent scheme for detecting movement information of rock particles.
MeSH term(s)	Algorithms ; Motion
Language	English
Publishing date	2021-06-15
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s21124108
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: COVID-19: Considerations for Children and Families During the Pandemic.

Tang, Binzhi / Alam, Didarul / Rakib, Mejbah Uddin / Li, Maojun

Frontiers in pediatrics

2021 Volume 8, Page(s) 600721

Abstract: Coronavirus disease 2019 (COVID-19), a fatal virus caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has become a pandemic across the world. Despite early concerns, children appear to be less susceptible to acquiring SARS-CoV-2 and ... ...

Abstract	Coronavirus disease 2019 (COVID-19), a fatal virus caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has become a pandemic across the world. Despite early concerns, children appear to be less susceptible to acquiring SARS-CoV-2 and manifest minor clinical symptoms compared with adults. However, there still exists a risk of physical and psychological health problems in children and their families. In this review, we summarize the existing information about the mechanism of SARS-CoV-2 infection, the epidemiology of COVID-19, and the clinical manifestations, treatments, and further considerations regarding COVID-19 in children.
Language	English
Publishing date	2021-01-14
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2711999-3
ISSN	2296-2360
ISSN	2296-2360
DOI	10.3389/fped.2020.600721
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Grinding Temperature and Surface Integrity of Quenched Automotive Transmission Gear during the Form Grinding Process.

Jiang, Xiaoyang / Liu, Ke / Yan, Yong / Li, Maojun / Gong, Pan / He, Hong

Materials (Basel, Switzerland)

2022 Volume 15, Issue 21

Abstract: Grinding burn is an undesired defect in gear machining, and a white layer is an indication of severe burn that is detrimental to gear surface performance. In this work, the influence of grinding parameters on the thickness of the white layer during form ... ...

Abstract	Grinding burn is an undesired defect in gear machining, and a white layer is an indication of severe burn that is detrimental to gear surface performance. In this work, the influence of grinding parameters on the thickness of the white layer during form grinding of quenched transmission gear was investigated, and the microstructure evolution and mechanism of severe burn formation were analyzed. The grinding temperature increased with the grinding depth and grinding speed, with the highest level of ~290 °C. The thickness of the white layer exceeded 100 μm when the grinding depth was 0.03 mm, and the top layer was a plastic deformation layer followed by a fine-grained martensite layer. Coarse-grained acicular martensite was found at the interface between the white layer and softened dark layer. The mechanical effect and thermal softening mainly contributed to the formation of white layer stratification. The ground surface topography showed several scratches and typical grooves; when grinding depth increased to 0.03 mm, the grinding surface roughness Sa was relatively high and reached up to ~0.60 μm, mainly owing to severe plastic deformation under grinding wheel extrusion and the thermal effect.
Language	English
Publishing date	2022-11-02
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma15217723
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: How to survive a periviable birth baby with birth weight of 450g: A case report.

Tang, Binzhi / Ling, Qiying / Yang, Qian / Li, Maojun / Shi, Wei / Wu, Qing

Medicine

2022 Volume 101, Issue 42, Page(s) e31356

Abstract: Rationale: An increasing number of periviable birth newborns (PVBs) have emerged with concurrent growing high-risk pregnancy. To date, postnatal management of PVBs remains one of the most challenging issues and limited studies have been reported.: ... ...

Abstract	Rationale: An increasing number of periviable birth newborns (PVBs) have emerged with concurrent growing high-risk pregnancy. To date, postnatal management of PVBs remains one of the most challenging issues and limited studies have been reported. Patient concerns: A female baby born at 230/7 weeks of gestation with birth weight of 450g. Diagnosis: PVB baby, respiratory distress syndrome (RDS), ventilator associated pneumonia (VAP), intraventricular hemorrhage (IVH), metabolic bone disease of prematurity (MBDP), transient hypothyroxinemia of prematurity (THOP), bronchopulmonary dysplasia (BPD) and retinopathy of prematurity (ROP). Interventions: Individualized treatment and intensive care, including neonatal resuscitation, effective respiratory and circulatory support, venous access and nutrition, prevention and treatment of infection, management of endocrine and metabolic problems, individualized nursing such as developmental supportive care, integrated oral motor interventions, skin care, family-integrated-care, etc were performed according to existing literature. Outcomes: The baby was discharged home after 138 days of hospitalization with body weight of 2700 g, a full oral feed achieved, and without any requirement of respiratory support or oxygen supply. Now she is 38-month-old, with no significant long-term adverse sequelae. Lessons: Our case expands the experience and knowledges of individualized and intensive management of PVB babies in their early life days, which increase PVBs' survival and improves their prognosis.
MeSH term(s)	Infant ; Pregnancy ; Infant, Newborn ; Female ; Humans ; Child, Preschool ; Birth Weight ; Resuscitation ; Bronchopulmonary Dysplasia/prevention & control ; Respiratory Distress Syndrome, Newborn/therapy ; Infant, Newborn, Diseases ; Oxygen
Chemical Substances	Oxygen (S88TT14065)
Language	English
Publishing date	2022-10-24
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	80184-7
ISSN	1536-5964 ; 0025-7974
ISSN (online)	1536-5964
ISSN	0025-7974
DOI	10.1097/MD.0000000000031356
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Ua VI Zs.171: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

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Article: Clinical profile, management and risk factors for seizure-related burn injuries among patients with epilepsy in southwest China.

Wang, Yangping / Luo, Lan / Li, Haisheng / Li, Maojun / Huang, Yuqun / Huang, Yuting / Luo, Gaoxing / Liu, Menglong

Heliyon

2023 Volume 10, Issue 1, Page(s) e23908

Abstract: Objective: The epidemiological information associated with seizure-related burn injuries is lacking in China. Therefore, this study aims to analyze the clinical profile, management, outcome, and risk factors of burns that are directly caused by seizures ...

Abstract	Objective: The epidemiological information associated with seizure-related burn injuries is lacking in China. Therefore, this study aims to analyze the clinical profile, management, outcome, and risk factors of burns that are directly caused by seizures among epileptic patients, and identify the epidemiological characteristics to develop effective preventive strategies. Methods: This study was conducted between January 2002 and December 2022 in a large Chinese burn center. Data including clinical profile, wound treatment, and outcome were analyzed. A multiple linear regression was used to screen the risk factors for the length of hospital stay (LOS), and a multiple logistic regression was used to screen the contributory factors for the amputation. Results: A total of 184 burn patients (55.98 % females) were enrolled, with a 0.78 % incidence rate during the study period. The mean age of the patients was 36.16 years (SD: 17.93). Patients aged 20-29 were the most affected age groups (23.37 %). Most burns were caused by flame, accounting for 60.33 % (111/184) of all cases. In total, 76.09 % of the 184 patients underwent at least one operation, and 35 patients (19.02 %) still required amputation during the study period. Burn sites (hands) had the greatest impact on amputation (OR = 3.799), followed by flame burns (OR = 3.723). The mean LOS/TBSA was 6.90 ± 8.53 d, and a larger TBSA, full-thickness burns, and a higher number of operations were identified as the risk factors for a longer LOS. There was one death among the 184 patients, with a mortality rate of 0.54 %. Conclusion: This study demonstrates that burn injuries are extremely harmful to individuals with epilepsy in China because they are at high risk of amputation and disability. Effective healthcare education and preventive programs that focus on lifestyle modifications and seizure control should be implemented to reduce the burn incidence in these populations.
Language	English
Publishing date	2023-12-18
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2023.e23908
Database	MEDical Literature Analysis and Retrieval System OnLINE

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