In this paper, an atomistic based finite element model is developed to investigate the influence of topological defects on mechanical properties of graphene. The general in-plane stiffness matrix of the hexagonal network structure of graphene is found. Effective elastic modulus of a carbon ring is determined from the equivalence of molecular potential energy related to stretch and angular defor...

The Synchro-Extracting Transform technique (SET) can capture the changing dynamic in a non-stationary signal which be applied for fault diagnosis of rotating machinery operating under varying speed or/and load conditions. However, time frequency representation (TFR) produced by SET affected noise contained signal, largely reduce accuracy diagnosis. This paper addresses this drawback and present...

An anterior congenital diaphragmatic hernia (CDH) is a diaphragmatic defect that allows the passage of abdominal organs into the thorax. It is typically asymptomatic (the diagnosis is incidental) and it requires surgical correction. In this paper we present a 6 year-old girl affected by spinal muscular atrophy (SMA) who was diagnosed with anterior CDH. Four years after laparoscopic closure of t...

SEMATECH has sponsored a " Test Method Evaluation " study to understand the trade-offs among the most common test methodologies used in the industry[1,2]. This paper presents the results of the failure analysis portion of that project. The testing, reliability stressing, characterization, fault diagnosis and physical analysis results are presented for 25 devices including " IDDq-only " failures...

In the maxillary anterior region, reconstruction of the localized alveolar ridge defect is very important in enhancing the esthetics of fixed partial denture. A 40-year-old female patient presented with a chief complaint of the inconvenience and unesthetic problem of 3-unit maxillary anterior prosthesis due to alveolar ridge resorption. After removal of old prosthesis, intraoral examination rev...

Background: Common arterial trunk (CAT) is a rare congenital heart disease, and often leads to the early development of pulmonary hypertension and disability. Among the critical structural heart defects, the frequency of CAT is 3%, which reflects the severe hemodynamic disturbances. The natural course of the disease is characterized by a high mortality rate up to 88% during the first year of li...

Five cases of atrial septal defect are reported, each of which was associated with a cleft in the anterior or posterior (or both) leaflet of the mitral valve. Only 3 had a characteristic murmur of mitral regurgitation, and 2 of these patients were thought to have a partial endocardial cushion defect. In two patients, the discovery of the mitral valve cleft came only at the time of operation, wh...

Congenital pericardial defects are rare and asymptomatic for both partial and complete defects. However, some patients can experience syncope, arrhythmia, and chest pain. When a patient experiences a symptom, it may be caused by herniation and dynamic compression or torsion of a heart structure including the coronary arteries. Diagnosis of a congenital pericardial defect may be difficult, espec...