Performance and Internal Flow of Contra-Rotating Small-Sized Cooling Fan

International audienceHigh pressure and large flow rate small-sized cooling fans are used for servers in data centers and there is a strong demand to increase its performance because of increase of quantity of heat from servers. Therefore, high rotational speed design is conducted, and rotational speed over 10,000min-1 is employed for cooling fans of servers. Contra-rotating rotors have been adopted for some of high pressure and large flow rate cooling fans to meet the demand. The company's research and development period for the contra-rotating small-sized cooling fan is short and its internal flow condition is not clarified well. Therefore, the internal flow condition was investigated by the numerical analysis. In the present paper, fan static pressure curves of the contra-rotating small-sized cooling fan with a 40mm square casing are shown by the experimental. Furthermore, the influences of the geometrical shape and design specification of the contra-rotating small-sized cooling fan on the internal flow condition are clarified by the numerical analysis

Pediatric Patient with Achondroplasia Who Underwent Foramen Magnum Decompression

A 1-year-and-1-month-old female patient diagnosed with achondroplasia (ACH), underwent foramen magnum decompression under general anesthesia. Difficult airway management was predicted at the induction of general anesthesia, and Airway ScopeTM was successfully used in tracheal intubation. Heat retention was observed during the anesthetic management, supposedly due to the congenital shortness of her four limbs. General anesthesia, including airway management and strict control of body temperature, should be carefully planned in pediatric patients with ACH

Efficacy of Late Steroid Pulse Therapy for ARDS Following Influenza Pneumonia: A Case Report

The patient was a 15-year-old girl who received laryngotracheal separation. Influenza A was detected upon examination due to fever (41°C) and dyspnea; the patient was admitted, and it was suspected that the onset of ARDS occurred subsequently. The patient was admitted to the ICU of our hospital for respiratory management. However, because an amelioration of respiratory organ symptoms was not noted, steroid pulse therapy was performed for three days from hospital day 14. P/F ratio was subsequently maintained at 200 or higher from hospital day 23. The patient was discharged from the ICU on hospital day 76

An Expressive Stateful Aspect Language

Abstract Stateful aspects can react to a program execution; they support modular implementations of several crosscutting concerns like error detection, security, event handling, and debugging. However, most proposed stateful aspect languages have specifically been tailored to address a particular concern. Indeed, most of these languages differ in their pattern languages and semantics. As a consequence, developers need to tweak aspect definitions in contortive ways or create new specialized stateful aspect languages altogether if their specific needs are not supported. In this paper, we describe ESA, an expressive stateful aspect language, in which the pattern language is Turing-complete and patterns themselves are reusable, composable first-class values. In addition, the core semantic elements of every aspect in ESA is open to customization. We describe ESA in a typed functional language. We use this description to develop a concrete and practical implementation of ESA for JavaScript. With this implementation, we illustrate the expressiveness of ESA in action with examples of diverse scenarios and expressing semantics of existing stateful aspect languages