The effects of cold work and subsequent annealing upon the microstructure and magnetic properties of zr-doped 6-80 molybdenum permalloy

An alloy containing 80.0% Ni, 12.65% Fe, 6.74% Mo, 0.36% Zr, and 0.25% Mn by weight was cast, solution annealed, and cold rolled into thin strips reduced in area by 0, 50, 75, and 90%. In addition samples of each worked condition were annealed to produce recrystallized and aged structures. Light metallography, electron microscopy, microprobe analysis, and magnetic testing were performed to determine the effects of cold working and annealing upon the microstructure and magnetic properties of the alloy

Collapse of an ecological network in Ancient Egypt

The dynamics of ecosystem collapse are fundamental to determining how and why biological communities change through time, as well as the potential effects of extinctions on ecosystems. Here we integrate depictions of mammals from Egyptian antiquity with direct lines of paleontological and archeological evidence to infer local extinctions and community dynamics over a 6000-year span. The unprecedented temporal resolution of this data set enables examination of how the tandem effects of human population growth and climate change can disrupt mammalian communities. We show that the extinctions of mammals in Egypt were nonrandom, and that destabilizing changes in community composition coincided with abrupt aridification events and the attendant collapses of some complex societies. We also show that the roles of species in a community can change over time, and that persistence is predicted by measures of species sensitivity, a function of local dynamic stability. Our study is the first high-resolution analysis of the ecological impacts of environmental change on predator-prey networks over millennial timescales, and sheds light on the historical events that have shaped modern animal communities

A Hybrid Diagnostic System for a Small Turbojet Engine

A diagnostic system is one of the key components securing the safety of operation of a turbojet engine. There are many different engineering approaches how to design engine diagnostic systems applied in real-world conditions. We propose a novel approach for a diagnostic system design to be applied on the object of a small turbojet engine using thermal diagnostics combined with a more traditional model based approach. The combination of these two approaches together with application of methods from the area of computational intelligence create a hybrid diagnostic system, which can be integrated with a control system of the engine. The article also deals with experimental validation of the designed diagnostic system on the object of a small turbojet engine iSTC-21v in laboratory conditions

Fiber optic temperature sensor

An inexpensive, lightweight fiber optic micro-sensor that is suitable for applications which may require remote temperature sensing. The disclosed temperature sensor includes a phosphor material that, after receiving incident light stimulation, is adapted to emit phosphorescent radiation output signals, the amplitude decay rate and wavelength of which are functions of the sensed temperature

MONITORING THE FOOTBALL PLAYER’S RUNNING SPEED IN THE U7 RANGE IN RESPECT WITH BALL AND WITHOUT BALL

The purpose of the study is to prove that, the ball exercises and the playful form of practice are more effective, than the “less ball exercises” practical training. The two participant groups in the measurement were Gyáli –BKSE U7 and Vecsési FC U7. The monitoring has been made with testing method technique (N=40). We used the slalom sprint and the slalom dribble. To determinate the difference we used the 2-sample t-test. The group of Gyál had a better result in slalom sprint. At the assessment in November, the improvement (0.39 second) was outstanding too and the in following months the improvement’s rate showed almost the same tendency. The group’s average improvement (0.96 second) progressed. At slalom dribble, the improvement of the group of Vecsés was continuous. The group’s average improvement was 5.03 second. The group of Gyál’s improvement was continuous as well but its rate is 3.22 seconds. The rate of improvement did not show any significant difference. Therefore, I cannot claim that this method causes much the largest improvement comparing to the traditional method. At both of the groups, the improvement is clearly demonstrable. Despite that the significant improvement is not demonstrable I am going to practise these playful exercises and recommend to my colleagues who work with this generation. Because with this exercises the trainings are more playful and vivid

Predictors of Successful Decannulation Using a Tracheostomy Retainer in Patients with Prolonged Weaning and Persisting Respiratory Failure

Background: For percutaneously tracheostomized patients with prolonged weaning and persisting respiratory failure, the adequate time point for safe decannulation and switch to noninvasive ventilation is an important clinical issue. Objectives: We aimed to evaluate the usefulness of a tracheostomy retainer (TR) and the predictors of successful decannulation. Methods: We studied 166 of 384 patients with prolonged weaning in whom a TR was inserted into a tracheostoma. Patients were analyzed with regard to successful decannulation and characterized by blood gas values, the duration of previous spontaneous breathing, Simplified Acute Physiology Score (SAPS) and laboratory parameters. Results: In 47 patients (28.3%) recannulation was necessary, mostly due to respiratory decompensation and aspiration. Overall, 80.6% of the patients could be liberated from a tracheostomy with the help of a TR. The need for recannulation was associated with a shorter duration of spontaneous breathing within the last 24/48 h (p < 0.01 each), lower arterial oxygen tension (p = 0.025), greater age (p = 0.025), and a higher creatinine level (p = 0.003) and SAPS (p < 0.001). The risk for recannulation was 9.5% when patients breathed spontaneously for 19-24 h within the 24 h prior to decannulation, but 75.0% when patients breathed for only 0-6 h without ventilatory support (p < 0.001). According to ROC analysis, the SAPS best predicted successful decannulation {[}AUC 0.725 (95% CI: 0.634-0.815), p < 0.001]. Recannulated patients had longer durations of intubation (p = 0.046), tracheostomy (p = 0.003) and hospital stay (p < 0.001). Conclusion: In percutaneously tracheostomized patients with prolonged weaning, the use of a TR seems to facilitate and improve the weaning process considerably. The duration of spontaneous breathing prior to decannulation, age and oxygenation describe the risk for recannulation in these patients. Copyright (c) 2012 S. Karger AG, Base

Idiopathic Pan-Colonic and Small-Intestine Varices

Idiopathic colonic varices represent a rare source of gastrointestinal haemorrhage with a presumed incidence around 0.0007%. Herein, we present a case of idiopathic colonic and small-intestine varices. According to our knowledge, this case report is the first description of both pan-colonic and small-intestine idiopathic varices of this extent. A young male patient without any previous notable medical history was admitted to the hospital because of massive enterorrhagia with haemodynamic instability. Colonoscopy revealed massive pan-colonic varices. After stabilization, numerous diagnostic procedures were performed in order to investigate the aetiology of pan-colonic varices without any explanation of the patient’s condition. In addition, capsule endoscopy revealed varices through the whole length of the small intestine. The final diagnosis was idiopathic varices of the colon and small intestine. Because of the rapid clinical stabilization, the single incident of haemorrhage and the extension of the disease, a conservative approach was chosen (venotonics and β-blockers). During the 12-month follow-up period, the patient reported no gastrointestinal haemorrhage