X-ray diffraction photographs were taken of ice dendrites grown from water and from the vapour. In both cases [II20] was found to be the growth direction. A method of growing cylindrical single crystals of any desired orientation has been devised. Some of these crystals were extended to several times their original length. Slip took place exclusively on the basal plane. Experiments designed to ...

Deformation of the material during cyclic expansion extrusion (CEE) is investigated using upper-bound theorem. The analytical approximation of forming loads agrees very well with the FEM results for different amounts of chamber diameter, friction factor and also for lower die angles. However, the difference between analytical and numerical solution increases at higher die angles which are expla...

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease. Most patients die from respiratory complications. Fortunately, there are a growing number of treatment options that can improve both survival and quality of life for patients with ALS. This review discusses the respiratory evaluation and treatment of patients with ALS, about which a great deal is known. It also incl...

Anomalous origin of left main coronary artery from pulmonary artery (ALCAPA) is a very rare congenital anomaly, reported in less than 0.5% of all the congenital heart diseases. Left untreated, majority of the patients die in infancy of myocardial ischemia. We report a case with this anomaly, presented in early infancy with progressive dyspnoea, feeding difficulty and cardiomagaly on X-ray. The ...

during a period of 7 years (1997-2003) we were received pairs of serum and csf of 27 suspicious clinically cases from neurology department of several hospitals in tehran. among them 7 were serologically positive for progressive rubella panencephalitis (prpe) and 2 were positive for sub acute sclerosing panencephalitis (sspe). rubella virus was isolated from 4 of 7 serologically positive cases o...

An approximate numerical mthod is presented for analysis and determination of modal characteristics in straight, pretwisted non-unifom helicopter blades. The analysis considers the coupled flapwise bending (out of plane), chordwise bending (in plane), and torsion vibration of both rotating and non-rotating blades. The proposed method is based on the integral expansion of Green functions (struct...

D uchenne muscular dystrophy (DMD) leads to progressive muscle weakness, causing respiratory failure [1, 2]. Untreated patients die at ,25 yrs of age, and the mean age of death in the 1960s was 15 yrs. The introduction of mechanical ventilation has improved survival compared with historical controls [1–3]. This finding has led to general agreement that noninvasive ventilation prolongs life in p...

Tubercle bacilli die much more rapidly under anaerobic than under aerobic conditions. Anaerobically, the rate of death is accelerated by increased CO(2) pressure, and when certain metabolites (lactate for example) are present in the medium. Death of the bacilli under certain conditions of anaerobiosis is accompanied by loss of ability to take the acid-fast stain and by progressive cellular disi...

Patients with progressive hepatic form of GSD IV often die of liver failure in early childhood. We tested the feasibility of using recombinant human acid-α glucosidase (rhGAA) for treating GSD IV. Weekly intravenously injection of rhGAA at 40 mg/kg for 4 weeks significantly reduced hepatic glycogen accumulation, lowered liver/body weight ratio, and reduced plasma ALP and ALT activities in GSD I...

Diabetic kidney disease (DKD) is the single most common cause of end stage renal disease (ESRD) with the annual costs of caring for patients with DKD exceeding more than $9 billion in the United States (Centers of Disease Control and Prevention, 2005). Every diabetic patient has up to a 40% lifetime risk to develop DKD, if the patient does not die prematurely of cardiovascular disease (CVD) (Pa...