A Multifrequency Approach to Interpret Defect Signals Superimposed by Disturbing Signals According to the Causing Defect Type and Size

Author(s):  
K Betzold
Keyword(s):  
2021 ◽  
Vol 11 (13) ◽  
pp. 6086
Author(s):  
Nils Ellendt ◽  
Fabian Fabricius ◽  
Anastasiya Toenjes

Additive manufacturing processes offer high geometric flexibility and allow the use of new alloy concepts due to high cooling rates. For each new material, parameter studies have to be performed to find process parameters that minimize microstructural defects such as pores or cracks. In this paper, we present a system developed in Python for accelerated image analysis of optical microscopy images. Batch processing can be used to quickly analyze large image sets with respect to pore size distribution, defect type, contribution of defect type to total porosity, and shape accuracy of printed samples. The open-source software is independent of the microscope used and is freely available for use. This framework allows us to perform such an analysis on a circular area with a diameter of 5 mm within 10 s, allowing detailed process maps to be obtained for new materials within minutes after preparation.


1981 ◽  
Vol 20 (9) ◽  
pp. 1724 ◽  
Author(s):  
Akito Iwamoto ◽  
Hidekazu Sekizawa
Keyword(s):  

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Inas Babic ◽  
Haifa Al-Jobair ◽  
Osama Al Towaijri ◽  
Huda Al-Shammary ◽  
Merna Atiyah ◽  
...  

The central tendon defect type of congenital diaphragmatic hernia (CDH) is extremely rare and usually associated with a significant pericardial effusion. Prenatal diagnostic ultrasound features of this quite rare entity remain often overlooked or misdiagnosed. There is a dearth of literature about the role of prenatal intervention, often through an elective pericardiocentesis, for the prevention of lung hypoplasia and to decrease the overall neonatal morbidity and mortality. To the best of our knowledge, till date, there is only one case that was subjected to a prenatal intervention. Here, we present a second case of a central tendon defect type of CDH with a large pericardial effusion that was subjected to a prenatal transthoracic pericardiocentesis. Although smooth intubation and ventilation were performed immediately after birth, the infant suffered for several months from respiratory instability. Laparoscopic central tendon hernia repair was performed, and neonate was discharged home at seven months of age. Although prenatal pericardiocentesis may facilitate smoother postnatal intubation and ventilation, its broader effect on respiratory function is uncertain and still remains elusive.


2015 ◽  
Vol 75 (9) ◽  
Author(s):  
Ishan Ismail ◽  
Adi Irfan Che Ani ◽  
Mohd Zulhanif Abd Razak ◽  
Norngainy Mohd Tawil ◽  
Suhana Johar

Building defects are a common issue associated with housing provision inMalaysia. Theoretically, new houses should be free of defects. To verify the quality of constructed housing, buildings should therefore be inspected starting from the early phases of construction up until the handing over stage. This study reveals the common building defects detected in new houses through visual inspections of 72 new terrace houses. The observed data are then analyzed using the Condition Survey Protocol system, which consists of two main assessments: condition and priority. The defects are identified and classified according to defect type, and overall results indicate that most of the common building defects in new houses are categorized as cosmetic. These defects are mainly caused by poor workmanship. To mitigate this problem, developers must ensure that the appointed builders/contractors are qualified and thorough building inspection is performed before the house being accepted.


Author(s):  
G. M. Kavalerskiy ◽  
V. Yu. Murylyov ◽  
Ya. A. Rukin ◽  
M. Yu. Kholodaev ◽  
P. M. Elizarov

Experience in revision hip arthroplasty with change of femoral stem was analyzed for 165 patients. In 107 operations (64.8%) Wagner SL Revision Stems were used, in the rest of cases - femoral components of other manufacturers. Distribution of patients by femoral defect type by Paprovsky was the following: I type - 27 patients, II type - 75, IIIA type - 59, IIIB and IV type - 4 patients. Good results at use of Wagner SL Revision Stems and stems of other manufacturers were comparable and made up 87.9 and 86.2%, respectively. Achieved data enabled to make conclusion that Wagner SL Revision Stem use is reasonable for patients with hip implant instability in I-IIIA femoral bone deficit, as they are cheaper than the modular revision stems and their design prevents the wear in the area of modular junction.


2020 ◽  
Vol 8 (3) ◽  
pp. 1432-1442 ◽  
Author(s):  
Shiva Mohajernia ◽  
Pavlina Andryskova ◽  
Giorgio Zoppellaro ◽  
Seyedsina Hejazi ◽  
Stepan Kment ◽  
...  

Surface exposed Ti3+ and lattice embedded Ti3+ in an optimum ratio is the determining factor for optimized photocatalytic H2 evolution.


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