Development of a Low Cost Sensored Control for High-Speed Axial Flux Permanent Magnet Machines

A Low Cost Control for a compact High-Power High-Speed Axial Flux Permanent Magnet (AFPM) Machine has been developed in this research. The machine under consideration has been designed to run in the generation as well as in the motoring mode for utilization in vast industrial and automotive applications. When used as a motor for automotive applications, the machine is directly coupled to a radial inward flow compressor to operate as an electric driven supercharger running in the range of 40,000 – 50,00 rpm. To run the machine as a motor at its rated speed and power, a suitable electric drive and controller has to be utilized while considering the machine performance characteristics. Most of the available Commercial Off-The-Shelf (COTS) systems are either designed for low-speed high-power machines or high-speed, low-power machines. In addition, the self inductance of such machines are relatively high (in the range of hundreds of millihenry) compared to the AFPM machine under consideration which has a very low self inductance (in the range of tens of microhenry). The low inductance of PM machines often makes current control difficult. If high switching frequencies are not used, the current ripple in the machine windings will be very high, causing degradation of the overall machine efficiency and increasing the rotor torque ripple and pulsation.  In this research a high frequency inverter-based controllers using Insulated Gate Bipolar Transistors (IGBTs) is utilized to overcome the problem of the low inductance of the machine. For simple and low cost control scheme, Hall effect sensors are used to energize the machine coils in the appropriate sequence thus providing accurate and precise control. The sensored control is analyzed using computer simulation and a prototype of the controller is also developed. Simulation results are validated by the experimental tests which showed good match and demonstrated the machine behavior under such controller and provided promising results for further research and investigations. Keywords: sensored control, low cost control, permanent magnet machines, axial flux machines; This research is funded by the Deanship of Research and Graduate Studies in Zarqa University /Jordan

Effective Use of 3D Technology In 3d movies to Development the Visual content of child

Childhood is the first stage which person goes through and the basic stone in building his personality, so the kindergarten stage is considered the basic educational stage for a person, through which he acquires many beliefs, experiences and concepts, and the child of this stage has specific cognitive and mental characteristics, so the cognitive development represents the most important aspect of growth which corresponds to mental functions such as problem-solving, inference and knowledge. It is also divided into thinking skills, conceptual development and perception.With the advancement of technology there are many educational methods that work to develop the cognitive development of the child, as well as new technologies in the field of image. Three-dimensional imaging appeared with its various techniques to give a sense of depth and is represented in virtual reality, holographic and stereoscopic cinema.In addition to the emergence of the latest cameras in every technology, for example the cameras used in stereoscopic cinema Z CAM K1 Pro, Vuze XR 3D VR180 °, insta360 EVO 3D / 2D Convertible 360/180 ° VR CameraAnd the cameras used in virtual reality "Z CAM V1 Pro Cinematic VR Camera, YI Technology HAL, 360 Precision LTD Facebook 360Surround Camera Bundle with PC Hardware"And the cameras used in the holography “RED and Lucid Unveil 8K 3D Camera for 4V Holographic Photos”When employing 3D technology to display the educational content for a child, this works to attract his attention, which leads to increase the process of perception, increases cognitive skills, and develops his visual content

Synthesis, physicochemical, thermal, fluorescence and catalytic activity studies of novel Mn(II), Co(II), Ni(II) and Cu(II) complexes with tridentate (ONS) Schiff base ligand

Syntheses and physicochemical studies of Mn(II), Co(II), Ni(II) and Cu(II) complexes with tridentate Schiff base ligand (E)-2-((1-(thiophen-2-yl)ethylidene)amino)phenol (HL)(ATS) were characterized by elemental analysis, FT-IR, Mass, 1H NMR, UV-Vis, magnetic moment, thermal analysis (TG and DTG) techniques, molar conductance and fluorescence spectra. The IR spectra showed that complexes were coordinated in metal ions via the imine N, O and S atoms. Magnetic and UV-Vis spectra, indicated that the geometrical structure of Mn(II), Co(II) and Ni(II) complexes are an octahedral while Cu(II) is a tetrahedral. The kinetic thermodynamic parameters such as E*, DH*, DS* and DG* were determined for each thermal degradation stage of TG curves of the metal(II) complexes using Coat-Redfern method. Fluorescence studies indicated that the Schiff base ligand HL(ATS), and its metal(II) complexes can serve as potential photoactive materials as indicated from their characteristic fluorescence properties and study the effect of solvent and pH on it. The catalytic activities of metal(II) complexes were studied using H2O2 solution

Academic Medicine as a Bridge to Peace: Building Arab and Israeli Cooperation

Can you imagine Canadian, Israeli, Jordanian, and Palestinian medical students singing, volunteering, and working together to develop programs to address issues related to global pediatric emergency medicine? Such a program was first held in Toronto in 2003 and continues annually. Can you imagine Canadians, Israelis, Jordanians, and Palestinians jointly teaching and developing solutions, via video teleconference, to address behavioral neurological problems affecting elderly populations? Such an initiative began in 2006 and continues to expand today. Can you imagine senior Jordanian and Israeli ear surgeons operating together, successfully carrying out pioneering cochlear implant surgery on deaf infants, on Jordanian national television? Such a surgery was performed in Amman in December 2003. Can you imagine every newborn baby in Jordan having her or his hearing tested? Such a program began in January 2005 as a result of Canadian, Israeli, Palestinian, and Jordanian service, educational, and scientific research cooperation, becoming national health policy in Jordan in 2007. All of this and much more are the result of the Canada International Scientific Exchange Program (CISEPO) and its cooperation network of knowledge

Effect of pre-emptive epidural Mg sulphate versus dexmedetomidine on postoperative analgesia requirement after open abdominal surgeries

Background: epidural approach is used to provide anaesthesia and analgesia (pain relief) in abdominal surgeries. Objectives: To estimate total cumulative dose of post-operative rescue analgesia & to estimate time to 1st post-operative analgesic request. Patients and methods: A prospective randomized double blind observational study. Conducted in Qena university hospital, South Valley University, Qena, Egypt. The study was conducted on sixty patients (ASA I or II) scheduled for major abdominal surgeries with general anesthesia combined with epidural anesthesia were included. Their ages ranged between 25 and 60 years old. Results: Regarding assessment of post-operative pain by visual analogue scale (VAS) we find that there was statistically significant difference between the three groups 24hour post-operative. there were significant difference (P<0.05) about the time to reach VAS 4 , that the time to reach VAS 4 in dexmedetomidine group is longer than the time to reach VAS 4 in Mg sulphate group than the time to reach VAS 4 in control group. Conclusion: Epidural Dexmedetomedine and Epidural Magnesium sulphate are safe in open abdominal surgeries and effectively reducing postoperative pain with longer duration of analgesia in Dexmedetomedine group

Zwei C.elegans Gene der High Mobility Group, hmg-12 and hmg-1.1, sind an der postembryonalen Neuralentwicklung und am Überleben der Zellen beteiligt

High mobility group (HMG) Proteine sind eine Gruppe sehr unterschiedlicher nukleärer Proteine. HMG Proteine werden auf Grund ihrer Struktur in drei Familien unterteilt: HMGI(Y), HMG14/17 und HMG1/2. Kürzliche Studien zeigten, dass HMG Proteine die Fähigkeit besitzen, DNA in unterschiedlichem Maße zu binden und mit verschiedenen Proteinen in Wechselwirkung zu treten. HMG Proteine spielen wichtige Rollen bei verschiedenen entwicklungsbiologischen Mechanismen. In dieser Studie wurden die Funktionen von zwei C.elegans HMG Proteinen, HMG-12, das zu den HMGI(Y)Proteinen gehört und HMG-1.1, das zur HMG1/2-Familie gehört, untersucht.Die Verringerung von HMG-12 mittels RNAi führte zu neuronalen Defekten in adulten Tieren. Die hmg-12 RNAi Tiere waren unkoordiniert und zeigten eine frühere Reaktion nach Kopfberührung als der Wildtyp. Daraus kann gefolgert werden, dass HMG-12 eine Rolle in der Funktion der postembryonalen AVM Reizweiterleitung spielt.Diese Ergebnisse weisen auf die unbekannte Funktion der postembryonalen Entwicklung der neuronalen AVM Verschaltung und die Funktionen von HMG-12 hin.Die Ergebnisse dieser Studie zeigten, dass HMG-1.1 in allen somatischen Zellen, angefangen beim Zwei-Zellen-Embryo, exprimiert wird. Die HMG-1.1 Expression verschwindet aus den Zellen während der Prometaphase des frühen Embryos. Die Reduktion von HMG-1.1 verursachte einen teilweisen Eiablagedefekt und morphologische Defekte in der Keimbahn und darüber hinaus apoptotischen und nekrotischen Zelltod. HMG-1.1 scheint durch die Regulation der Ca2+-Konzentration in den Zellen eine Rolle beim Überleben der Zellen zu spielen

Medication Compliance In Adults Age 45 To 65 Years

Medication non-compliance is common among adults and often leads to serious illnesses, complications, emergency rooms visits and hospitalizations. An extensive review of literature was conducted which focused on perception, knowledge, attitudes and behavior regarding medication compliance. Numerous research conducted assess a of variety interventions to improve compliance. However, few studies were conducted from a nursing perspective that identifies contributing factors influencing medication non-compliance in young adults. A quantitative, descriptive, non-experimental design was utilized to describe the frequency of factors related to medication non-compliance. The Nola Pender’s Health Promotion Model (HPM) was used as a theoretical framework for this study. Penders’ HPM helps to inspire people towards positive motivations and understanding the importance of health promoting behaviors. Pender’s HPM provides a framework that can be used by health care providers to identify the factors which interfere with people’s ability to maintain compliance to prescribed regimen. A self-developed questionnaire was designed for this study and distributed to participants who met the inclusion criteria. The survey was composed of specific questions related to demographics and medication noncompliance. Descriptive statistics were utilized to analyze the data by evaluating frequency and percentage distribution. A self-developed questionnaire was completed by 54 adults between age 45-65 years old living in the United States. The results of the study indicated that the majority of respondents recognized the importance of maintaining compliance to a prescribed regimen. Moreover, the results of the study indicated that the majority of respondents expressed health care providers’ positive influence on their medication compliance. The decisions to adhere or not to adhere to a prescribe regimen are individual choices, but health care providers should continue to encourage and counsel their patients on the benefits of medication compliance. Recommendations for the study include replication of the study using a larger sample from a more diverse geographic area. In addition, a qualitative study with open-ended questions would be beneficial to gain insight on various strategies and interventions implemented. Qualitative research will also be helpful to identify health care providers’ (physicians, physician assistants, nurse practitioners) perspectives on medication compliance. Health care providers need to be familiar with different investigation methods of non-compliance. Another recommendation would be to examine the relationship between medication non-compliance and medical diagnoses. The results of the study will be shared with health care professionals and graduate nurse practitioner students at Daemen College