Safran (United States)

PURPOSE: To report Demodex infestation in pediatric blepharoconjunctivitis. METHODS: A retrospective review of 12 patients, with ages from 2.5-11 years, with chronic blepharoconjunctivitis who failed to respond to conventional treatments. Demodex was detected by lash sampling and microscopic examination. Patients were treated with 50% tea tree oil (TTO) eyelid scrubs or 5% TTO ointment eyelid massages for 4-6 weeks. RESULTS: Demodex mites were found in all, but 1 case had cylindrical dandruff in the lashes. After 1 week of TTO treatment, all patients showed dramatic resolution of ocular irritation and inflammation while Demodex counts dropped. All corneal signs resolved within 2 weeks except for a residual anterior stromal scar in 1 eye. During a follow-up period of 8.3 ± 4.6 months, 1 patient showed recurrent inflammation, which was successfully managed by a second round of TTO treatment. CONCLUSIONS: Demodicosis should be considered as a potential cause of pediatric refractory blepharoconjunctivitis. Eyelid scrubs or massage with TTO could be an effective treatment regimen in these cases.

BACKGROUND: The aims of this retrospective study were to evaluate the maternal and prenatal outcomes between 35 years and older pregnancies and younger pregnancies, and the effects of the age of pregnancy, mother and newborn. METHODS: Pregnant women who gave birth in Vakif Gureba Training and Research Hospital, Clinic of Obstetrics and Gynecology in 2006 were retrospectively screened. Pregnant women aged 35 years and over were included in this study and the pregnant women between age range of 30 - 34 years were included in the control group. RESULTS: Pregnancy rate was found as 7.1% in 35 years and older women in all the deliveries, cesarean delivery rate was found as 46.1% in this group at 1 year period. However, cesarean delivery rate was 40.9% in the control group. Cesarean delivery rate was found as 31.6% in all the deliveries. The most common cause of cesarean section indication was fetal distress in advanced maternal age (AMA) (11.7%), whereas previous cesarean section was found as the most common cause in the control group (15.1%). CONCLUSION: No significant difference was found between AMA group and normal pregnancies in terms of preterm labor, caesarian section, morbidity, mortality and chronic diseases such as hypertension and diabetes mellitus.

Abstract The purpose of this study is to statistically and empirically evaluate the effectiveness of the gun control laws that have been adopted by states and municipalities. States are divided into two groups: states with no restrictions as to gun use and states with restrictions ( e.g. , waiting periods, license, etc.). Multiple linear regression models are used to evaluate the relationship between the number of gun related deaths in 1990 and sets of determinants which include state laws and regulations governing the use of firearms . The study results indicate that gun control laws have a very mild effect on the number of gun related deaths while socioeconomic variables such as a state's poverty level, unemployment rate and alcohol consumption, have significant impact on firearm related deaths. These findings suggest that any reduction in resources spent on social programs tied to the Crime Bill may be counter‐productive.

PURPOSE: To present cases of uveitis-glaucoma-hyphema (UGH) syndrome due to reverse pupillary block in sulcus-placed posterior chamber intraocular lenses (PC IOLs) that were managed with laser peripheral iridotomy (LPI). SETTING: Community-based subspecialty clinics. DESIGN: Retrospective interventional case series. METHODS: A chart review of patients with a sulcus-placed PC IOLs presenting with UGH syndrome and reverse pupillary block with posterior iris bowing as diagnosed by gonioscopy and anterior segment optical coherence tomography was carried out. Laser peripheral iridotomy was performed in the eyes included in the study. The main outcome measure was clinical resolution of UGH syndrome. RESULTS: The study included 6 eyes of 6 patients with a mean age of 59.8 years (range 43.0 to 66.0 years) who presented with unilateral UGH syndrome a mean of 28.7 months (range 0.3 to 84.0 months) after PC IOL implantation. All patients were previously myopic, with 5 (83.3%) having a history of vitrectomy. The mean axial length was 27.0 mm ± 1.4 (SD). An LPI was used to treat the reverse pupillary block with resultant improvement in iris profile and resolution of UGH syndrome in all eyes. The mean intraocular pressure decreased from 30.5 ± 10.0 mm Hg on 0.5 ± 0.8 glaucoma medications to 15.5 ± 3.2 mm Hg postoperatively on 0.7 ± 1.2 medications. CONCLUSIONS: The UGH syndrome due to reverse pupillary block occurred after sulcus-placed PC IOLs in susceptible patients, those with axial myopia, and post-vitrectomized eyes. The cases were managed with LPIs. FINANCIAL DISCLOSURE: Dr. Ahmed is a consultant to Alcon Laboratories, Inc. and Abbott Medical Optics, Inc. No author has a financial or proprietary interest in any material or method mentioned.

A phase change material (PCM) is a substance capable of storing or releasing large amounts of energy typically when melting or solidifying. The use of PCM is promising for the cooling of electric machines with high-load short transient duty, such as aircraft stator generators (S/G). During the starting phase, which lasts a couple of seconds, a substantial amount of heat has to be extracted from the machine windings, while the steady-state operation is less thermally constraining. In order to ensure sufficient cooling capabilities, PCMs should be placed as close as possible to the winding conductors due to their low thermal conductivity. This paper investigates a novel integration approach, where PCMs are placed inside hollow conductors (HCs). Numerical and experimental analyses have been completed on a range of hollow conductors filled with PCMs to gain a first insight into the benefits of this cooling method. Detailed descriptions of the proposed cooling technique have been supplemented with measured data from tests on a hollow conductor exemplar filled with PCM. An illustration of a practical use of the developed method on a helicopter turbine S/G is also presented.

This article discusses a high-speed brushless doubly-fed machine (BDFM) for aviation turboelectric distributed propulsion application. After a brief overview of the machine fundamentals and propulsion architecture, the electromagnetic properties of the newly designed BDFM are analyzed. An innovative rotor mechanical design is introduced, which allows for a significant increase of speed compared to legacy rotor designs. Experiments were conducted to verify the 12 000-r/min high-speed operation. The findings in this article will give prominence to the feasibility of applying BDFMs for aviation applications.

Aim: Disabled patients are admitted to the medical board to determine the disability rate in order to use the occupational, health and social rights in Turkey. According to the law, over 40% of individuals with disabilities, based on the severity of their disability and illness rate, have different rights. We aimed to contribute to epidemiological data on people with disabilities in our city. Methods: Between January 2014 and December 2014 the records of patients were admitted to the medical board of Karabuk University Training and ResearchHospital, and they were analyzed retrospectively. Results: In the medical board in January 2014-December 2014, 2637 cases were evaluated. 1554 of these patients were male (58.9%), 1083 women (41%). With the increase of age, the frequency of application increased, too. Maximum application was in the group who are above 65 years of age. The numbers of cases by over 40% points are 1834 people (69.5%).1055 of them were men (40%), 779 were women (29.5%). When the cases were evaluated according to the distribution of branches, 976 cases (37%) in musculoskeletal system were identified. The least disability was in Obstetrics and Gynecology with 8 cases (0.3%). Conclusion: Quality of life of the disabled population and the quality of services which are offered to them are closely related to the level of development of the society. In order to improve the life quality of disabled people, regional and country wide data of these people are needed.

The existing concept of aviation turboelectric distributed propulsion for passenger aircraft relies on direct current (DC) for power transmission and distribution. The mass and efficiency performance of DC-based propulsion systems becomes challenging as the system power rating increases. This work proposes a turboelectric distributed propulsion based on brushless doubly-fed machines, which will minimize the power conversion, enhance the mechanical reliability, and strengthen the fault-tolerance capability. This paper presents the background of the proposed turboelectric distributed propulsion along with the system modeling, control algorithm development, and preliminary simulation results of a full flight profile.

Several publications on near-Navigation grade MEMS gyros have been published recently ([1], [2]). Gains in SWaP are critical for several applications such as low-SWaP AHRS, gyrocompassing, and stabilized optical or guidance systems. In this paper, we present the latest results obtained at Safran on Nav-grade MEMS Gyro development. The first part of the paper will focus on Safran's new mixed-signal, analog dominant ASIC. In the second part, we will introduce a new ceramic package called Core MRG carrying the MEMS and the ASIC. In the third part, we will present the performance results measured with the Core MRG. As summed up in Table.1, typical Core MRG performances are compatible with north-keeping and mid-end navigation applications.

Due to the complexity of structure, operating principle, and control purposes, it is challenging to design and analyze a brushless doubly-fed machine viewing from its overall performance across the entire operating range. This paper elaborates on an efficiency mapping method of a dual-converter-driven brushless doubly-fed machine using finite element method and data post-processing. The efficiency mapping method can characterize various electromagnetic properties over the operating range and provide insightful information for the design and control development of brushless doubly-fed machines.

The aging VXI and physical limitations of PXI create a need for new bus standard for the highest performance test applications. AXIe, based on AdvancedTCA with extensions for instrumentation and test, leverage existing standards from PXI, LXI and IVI and provide more than enough power and space to accommodate the most demanding test instruments. AXIe promises high scalability and performance that will address a range of platforms including bench top measurements, modular systems and automated test equipment.

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<div class="section abstract"><div class="htmlview paragraph">Geometry simplification is a critical step of performing conjugate heat transfer analysis utilizing computational fluid dynamics (CFD). This paper provides a standard methodology to simplify the geometry of electric rotating machines such as electrical generators and electrical motors (both air and liquid cooled). These machines are extremely complex in design and CFD plays an imperative role in their optimization. These machines are extensively deployed throughout aerospace and automotive industries where optimization of weight, volume, and performance is paramount especially given the current global transition to renewable energy sources and vehicle hybridization / electrification.</div></div>

The standard Mars Sample Return mission profile implies tw o launches (one orbiter and one lander) and a rendezvous in Mars orbit before returning the sample to Earth. This paper explores the possibility to perform the mission with a single launch and no rendezvous in Mars orbit (direct Earth return). To this end, an improved cryogenic upper stage of ARIANE 5 using VINCI engine is combined with either an orbital propulsion module using a cryogenic propellants or a LOX / light HC propellants, both requiring active refrigeration, or the addition of electric propulsio n, provided by Hall effect Thrusters (PPS 5000), and chemical propulsion. Several options provide a Mars Ascent Vehicle (MAV) mass from 3 tons to 4 tons, sufficient to inject directly toward Earth the sample capsule and host spacecraft.

In this paper, we consider a use case where an airport passenger travels and uses an automated gate to cross a border.We detail three phases: a pre-check before the arrival at the airport, the travel of the passenger from his check-in to the automated border gates and finally, the crossing of the gate. To accelerate the throughput at the border gates, we want to identify his face among a flight passenger list during the second phase. This identification is split between the passenger who takes a picture of his face with his smartphone and the immigration authorities. We rely on cryptographic verifiable computation techniques to ensure the security of the process. Experimental results show that our protocol is practical.

On observe, ces dernières années, une éclosion de publications consacrées à l’histoire et à la politique de l’espace qu’ont marquées les bidonvilles, terme probablement employé pour la première fois à la fin des années 1920 à Casablanca pour décrire une agglomération en croissance rapide d’habitats de fortune construits par des migrants récemment arrivés des campagnes à la ville. Au cours des décennies qui suivirent, ce terme fut repris pour désigner des développements similaires dans d’autres villes du Maghreb et, au milieu des années 1950, en métropole. Comme le suggèrent les quatre ouvrages analysés ici, des historiens de la ville et de l’architecture ont commencé à s’intéresser de plus près à la trajectoire particulière du bidonville, soit du point de vue de l’histoire urbaine – en mettant l’accent sur les institutions, sur les structures politiques et sur les politiques de la ville (Blanc-Chaléard, 2016) –, soit de celui de l’histoire de l’architecture – privilégiant les plans d’architectes pour de nouveaux aménagements urbains et la construction de logements destinés à remplacer les bidonvilles (Avermate et Casciato, 2014 ; Roesler, 2016). Dans Architecture and Counterrevolution, Samia Henni ouvre une sorte de troisième voie, puisqu’elle relie l’analyse des politiques institutionnelles et des projets à grande échelle de restructuration territoriale à l’étude de projets de construction remarquables.