In this paper, we establish a lower bound on the number of inducing simple n-gons in grid-like arrangements of lines. We also show that the complexity associated with counting the number of inducing n-gons in an arrangement of collinear segments is #P-complete.

Sharps injury prevention programs are intended to reduce the risks associated with the use of needles and other sharps. The goal of such programs should be to provide protection to everyone in the facility — from the sharps users, such as nurses and physicians, to those who may come in contact with the sharp after use, such as housekeeping personnel, visitors, or waste handlers. These programs ...

Amount of damage Cracks in the metal, flaking of metal fragments or sharp edges on ‘blunt’ instruments risk injury to the patient’s eye during surgery. If these defects cannot be repaired adequately for patient safety, the instrument should be discarded. Cracks in the hinges of scissors, needle holders, forceps joints and haemostats will continue to cause problems with alignment and cannot be r...

What are the causes of fl exor tendon injuries? Flexor tendon injuries are most commonly caused by a sharp cut to the fi nger or palm. Rupture of the attachment of the tendon to the fi nger can also occur and is commonly associated with recreational sports (such as tackling in football when the tackler’s fi nger becomes entangled in the opponent’s jersey). Flexor tendon injuries can also occur ...

OBJECTIVE To categorise the characteristics, causes and rates of occupational injuries referred to the Emergency Department of a Turkish hospital. METHODS The cross-sectional study was conducted at a university-based hospital in Edirne, Turkey, from January 1, 2010 to May 1, 2011. Parameters evaluated included: gender, age, occurrence mechanism, injury type, injury localisation, sector, seaso...

The simplest interpretation of the global success of the Standard Model is that new physics decouples well above the electroweak scale. Supersymmetric extension of the Standard Model offers the possibility of light chargino and the right-handed stop (with masses below MZ), and still maintaining the successful predictions of the Standard Model. The value of Rb can then be enhanced up to ∼ 0.218 ...

INTRODUCTION Unintentional ingestion of a toothpick is not an uncommon event. Often the ingested toothpicks spontaneously pass through the gut without sequelae. However, serious complications can happen when these sharp objects migrate through the gastrointestinal wall. CASE PRESENTATION In the current report, we describe the case of a 37-year-old Caucasian woman with an incidental finding of...

Sharp trocar insertion for laparoscopic procedures carries with it increased risk for vascular and visceral complications and incisional hernia. In a trial, which randomized 87 patients to treatment with either sharp trocars or a radially expanding needle system with blunt dilator, results showed that with the latter system there was statistically improved patient assessment of pain, a lower co...

A 77-year-old edentulous man presented to the accident and emergency department with a sudden onset of sharp right-sided abdominal pain. The patient reported a change in his bowel habit with constipation over a 6 month period but did not report any significant choking event or ingestion of a foreign body in the preceding months. On examination the patient was maximally tender with guarding over...

Cases of suicide by use of elaborate and complex devices are rare in the literature and popular media, despite the media attention such cases attract. These suicide cases have employed guillotines, contraptions involving guns and self-made firearms, and devices capable of delivering asphyxiating gases such as carbon monoxide. All previously reported cases of suicide by guillotine have been by d...