We review the "critical point" concept for large earthquakes and enlarge it in the framework of so-called "finite-time singularities." The singular behavior associated with accelerated seismic release is shown to result from a positive feedback of the seismic activity on its release rate. The most important mechanisms for such positive feedback are presented. We solve analytically a simple mode...

Robert Anthony Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology Abstract Since the early 1960s when Maruyama and Burridge and Knopoff convincingly demonstrated that the elastodynamic radiation patterns exhibited by shear faulting in an isotropic, elastic medium were consistent with a pair of force couples, it has become standard practice amongst seism...

In December 2019, a new strain of the corona virus, as a subset of coronaviruses was identified for the first time in Wuhan, China. Symptoms included fever, cough, and muscle aches that are very similar to the seasonal flu.

A lesion of the lumbar posterior endplate is sometimes identified in the spinal canal of children and adolescents; it causes symptoms similar to those of a herniated disc. However, the pathology of the endplate lesion and the pathology of the herniated disc are different. We present a rare case of a 23-year-old woman who developed progressive palsy of the lower leg caused by huge lumbar posteri...

Febrile neutropenia (FN) is characterized by a decrease in neutrophils number to values below 500 cells/ mm3 and an occurrence of fever higher or similar to38.3oC. It commonly occurs in cancer patients as a result of chemotherapy regimens. Chemotherapy destroys carcinogenic cells but also attacks in many cases some normal cells including essential elements of the immune system. Fever is one of ...

Osteomyelitis pubis is an infectious inflammation of the symphysis pubis and accounts for 2% of hematogenous osteomyelitis. This differs from osteitis pubis, a non-infectious inflammation of the pubic symphysis, generally caused by shear forces in young athletes. Both conditions present with similar symptoms and are usually differentiated on the basis of biopsy and/or culture. A case of osteomy...

We report a case of a small, isolated paraspinal arteriovenous fistula (AVF) that arose in an adult without obvious trauma. The fistula, despite its extraspinal location and small size, caused hypertension of the intrathecal venous system and produced symptoms that were similar to those of spinal dural AVF. Detecting such a small lesion is difficult, but contrast-enhanced MR imaging can prove h...

Spontaneous uterine rupture and generalized peritonitis caused by pyometra occurs rarely with high morbidity and mortality. A correct and definite diagnosis can be made with laparotomy or laparoscopy. The clinical findings of perforated pyometra are similar to perforation of the gastrointestinal tract and gynecologic symptoms are less frequent, which makes preoperative diagnosis difficult. We r...

Objective: Irritable bowel syndrome (IBS) is one of the most common chronic functional diseases gastrointestinal tract. There no organic disorder in IBS. The pathogenesis IBS not fully understood. Although symptoms patients are mostly diet-related, there many studies evaluating nutrient intake. In this study, it was aimed to determine intake and nutrition habits patients. Methods: A total 70 pa...