874 research outputs found
Peripheral vestibular vertigo: clinical spectrum and review of Aetiological factors.
No full textVertigo constitutes a significant proportion of specialist otorhinolaryngological (ORL) outpatient practice although management may be multidisciplinary. Accurate diagnosis remains a challenge, often depending on clinical/neurootological examination, often with limited availability of costly and sophisticated diagnosticfacilities, the yields of which are often low.This report aims at creating a reference database formanagement of vertigo in the (ORL) Clinic. This is a retrospective chart review of vertigo patients seen in ORL outpatient clinic through 2001 to 2006. Clinical/neuroo-otological examination, radiology and audiometry were the major modalities of investigation. The prevalence of vertigo in the Oto- Rhino-Laryngology outpatient Clinic was 15% (134). There were 79 males and 55 females with peak age at presentation between the 3 and 4 decade of life. Benign paroxysmal positional vertigo 33 (25%), Labyrinthitis 23(17%), menieres disease 19(14%) and cervical spondylosis 14(10.5%) were the leading clinical diagnoses. Trauma accounted for 35% of the aetiological factors while17%was idiopathic. Clinical examination remains the prime technique in accurate diagnosis of vertigo although contemporary diagnostic facilities may help. The spectrum of the non-traumatic and idiopathic cases suggest a need for immunogenetic study in the diagnosis.Keywords: Vertigo, clinical diagnosis, aetiology, outpatient revie
Implementation of O.A. Igelstrom’s Reforms in the Steppe of Orenburg Region
No full textThe article describes the process of implementing the reforms by O.A. Igelstrom in the Small Kazakh Horde. The author briefly acquaints with the main content of reforms of governance of the Orenburg part of the Kazakh steppe in the 1870. The main motives and the purposes of regional administration in carrying out administration reforms in the region and the necessity to take local traditions of the organization of the power into consideration are reflected. The reasons of O.A. Igelstrom’s reforms failure are revealed and discussed. The author studies the issue related to the authority and the influence of the khan’s power among the Kazakhs and the government measures on the restriction of this power. Attempts of the imperial government to manipulate with elections of new khans are described in the article. Reaction of the Kazakh elite on those actions is shown. The special attention is paid to the movement of Syrym Datov and to the way the Russian government took the advantage of this movement under various political circumstances. Winning round the Kazakh opposition and pushing it away under the changed circumstances, the Russian administration steadily solved one of the main political tasks to replace the elected head by a person or an institution loyal to the emperor and suitable for carrying out the requirements of the Russian regional administration. But it was impossible to solve the problem in the conditions of O. Igelstrom’s reforms. The way to achieve the desired goal was opened with M. Speransky’s reforms of 1820
Aetiological profile of facial nerve palsy in north central Nigeria
Get PDFBackground: Facial nerve abnormalities represent a broad spectrum of lesions which are commonly seen by the otolaryngologist. The aim of this paper is to highlight the aetiologic profile of facial nerve palsy.Methods: A retrospective study of patients with facial nerve palsy seen in the Ear, Nose and Throat clinic for 5 years.Results: The study comprised of 25 patients, made of 16(64%) males and 9(36%) females (M:F = 1.7:1). The age ranged between 6months and 80years, mean of 32.1years (SD=16.38), with peak presentation seen in the 30-40years age group. Bell’s palsy 13(52%), road traffic injury 5(20%) and chronic suppurative otitis media 3(12%) are the commonest cause. The others are stroke 2(8%), measles infection 1(4%) and middle ear tumor 1(4%). Spontaneous recovery was observed in 40%.Conclusion: Bell’s palsy was the commonest cause of facial nerve palsy, however aetiologies cut across all age groups. male slightly more affected. This serves as data base for clinical evaluation of facial palsy in our environment
Aetiological Profile of Facial Nerve Palsy in North Central Nigeria
No full textBackground: Facial nerve abnormalities represent a broad spectrum of
lesions which are commonly seen by the otolaryngologist. The aim of
this paper is to highlight the aetiologic profile of facial nerve
palsy. Methods: A retrospective study of patients with facial nerve
palsy seen in the Ear, Nose and Throat clinic for 5 years. Results: The
study comprised of 25 patients, made of 16(64%) males and 9(36%)
females (M:F = 1.7:1). The age ranged between 6months and 80years, mean
of 32.1years (SD=16.38), with peak presentation seen in the 30-40years
age group. Bell’s palsy 13(52%), road traffic injury 5(20%) and
chronic suppurative otitis media 3(12%) are the commonest cause. The
others are stroke 2(8%), measles infection 1(4%) and middle ear tumor
1(4%). Spontaneous recovery was observed in 40%. Conclusion:
Bell’s palsy was the commonest cause of facial nerve palsy,
however aetiologies cut across all age groups. male slightly more
affected. This serves as data base for clinical evaluation of facial
palsy in our environment
Correction to: A Siamese transformer network for zero-shot ancient coin classification (Journal of Imaging, (2023), 9, 6, (107)
No full textJochen Büttner was not included as an author in the original publication [1]. The corrected Author Contributions statement appears here. Author Contributions: Conceptualization, J.B. (Siamese structure), Z.G. and O.A. (transformer components); methodology, Z.G., O.A. and Y.L.; software, Z.G. and Y.L.; investigation, Z.G. and D.R.; resources, Z.G. and O.A.; data curation, O.A.; writing—original draft preparation, Z.G., O.A., D.R. and Y.L.; writing—review and editing, Z.G. and O.A.; visualization, Z.G.; supervision, O.A.; project administration, O.A.; after initial publication, J.B. has agreed to be added as a co-author. All authors have read and agreed to the published version of the manuscript. The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.</p
Aetiological Profile of Facial Nerve Palsy in North Central Nigeria
Get PDFBackground: Facial nerve abnormalities represent a broad spectrum of
lesions which are commonly seen by the otolaryngologist. The aim of
this paper is to highlight the aetiologic profile of facial nerve
palsy. Methods: A retrospective study of patients with facial nerve
palsy seen in the Ear, Nose and Throat clinic for 5 years. Results: The
study comprised of 25 patients, made of 16(64%) males and 9(36%)
females (M:F = 1.7:1). The age ranged between 6months and 80years, mean
of 32.1years (SD=16.38), with peak presentation seen in the 30-40years
age group. Bell’s palsy 13(52%), road traffic injury 5(20%) and
chronic suppurative otitis media 3(12%) are the commonest cause. The
others are stroke 2(8%), measles infection 1(4%) and middle ear tumor
1(4%). Spontaneous recovery was observed in 40%. Conclusion:
Bell’s palsy was the commonest cause of facial nerve palsy,
however aetiologies cut across all age groups. male slightly more
affected. This serves as data base for clinical evaluation of facial
palsy in our environment
Nietvergeten.nl
No full textEen online systeem geschreven in o.a. PHP en beveiligd met o.a. SSL encryptie waarmee geregistreerde gebruikers persoonlijke informatie kunnen opslaan, samen met andere nuttige gegevens zoals paspoortnummer, rijbewijs, etc. Het inscannen en opslaan van belangrijke formulieren is ook mogelijk. Daarnaast kan men reminders instellen voor bepaalde gebeurtenissen.Electrical Engineering, Mathematics and Computer Scienc
Rationale for the Course “Basics of Anti-Doping Policy” in Physical Culture Education
No full textКлестова Оксана Александровна, кандидат педагогических наук, доцент, доцент кафедры
менеджмента и экономики в спорте, начальник учебно-методического управления, Уральский
государственный университет физической культуры, [email protected]. O.A. Klestova, [email protected]
Ural State University of Physical Culture, Chelyabinsk, Russian FederationРассмотрен один из аспектов проблемы подготовки специалистов для отрасли физической культуры и спорта в соответствии с требованиями работодателя. Автором определены политические, экономические, нормативные и иные основания для разработки и
введения в соответствии с запросом работодателя нового учебного курса. Отмечена целесообразность разработки дисциплины «Основы антидопингового обеспечения» для направления подготовки 49.03.01 «Физическая культура» с использованием требований
профессионального стандарта на основе его дополнения и конкретизации. The article describes one aspect of the problem of physical culture specialist training that
complies with the requirements of the employer. The author defined the political, economic, regulatory
and other reasons for the course development. The necessity of development of the subject
“Basics of Anti-Doping Policy” for the students getting degree in “Physical culture” is proven.
The author specified the educational requirements of the national education standard
Some Aspects of the Consequences of State Management on «Olympic Airways»
No full text«Olympic Airways» (O.A.) was founded by Onassis in 1956. The Greek State took over O.A. in 1975. The operation of O.A. was and still is based on the Contract that had been agreed between Onassis and the Greek State. The author proves that, although the State fulfilled the terms of the Contract completely while the company was privately owned, it stopped complying with many terms of the Contract since 1975, when O.A. became state owned. Furthermore, the State obliged O.A. to undertake the cost of some of its policies. The author estimates that, as a result of this conduct of the State, the total burden and loss of income of O.A. amounts to 544 millions the O.A. losses for whole period of state ownershi
Integration of High-Tc Superconducting Cables in the Dutch Power Grid of the Future
No full textWorldwide there is an increasing need for a more sustainable form of electrical power delivery with a growing share of renewable energy generation. In the distribution and transmission network, large-scale and small-scale wind and solar power plants will be introduced, in proportion to the annual economic growth. The transmission and distribution network will be expanded, focusing on the electricity transport, however, there will also be a need for exchanges with neighboring countries. Alternative solutions are needed in order to support the changes of the future grid. High temperature superconductors are an alternative to conventional conductors, due to their high current density and very low AC loss, and therefore deserve more attention. The purpose of this study is to explore ways to integrate high-temperature superconducting cables in a future network and to compare their favorable technical properties with, e.g., the conventional XLPE cable. The development of 2nd generation high temperature superconducting tapes results in a high tape quality, making it very attractive for use in superconducting power transmission cables. At the same time, the network requirements placed on the grid, based on society needs are changing, such as low magnetic field emissions, reducing space requirements, lower losses, minimizing visual intrusion, etc. Our study shows that superconducting cables compared to conventional cables score better on these societal requirements. From our comparison of three practical low and high temperature superconductors we can conclude that Yttrium Barium Copper Oxide is the most suitable superconductor for use in transmission cables. Our techno-economic analysis shows that superconducting cables become already competitive with conventional cable in the AC transmission, such as XLPE cables. Possible future problems concerning the transport capacity in the power grid where high temperature superconducting cables can offer a solution have been identified. For one promising location, we have formulated the requirements for the design of a high-temperature superconducting cable. Next, we propose two types of cable systems (with cold and warm dielectric). For both types we describe the core, the electrical insulation, the screen, the cryostat, the cooling system, etc. Also for the distribution grid a techno-economic investigation is conducted. To assess the feasibility of the application in distribution grids, we have experimentally demonstrated a reduction of AC conductor losses from 1 W/m to 0.1 W/m. We also carried out an experimental investigation to improve the developed cryostat design for a 6 km long cable connection. Despite these substantial technical improvements our economic study showed that the high-temperature superconducting distribution cable is not yet competitive with the present conventional distribution cable systems except for niche locations where additional advantages e.g. magnetic emission, reduced space usage, power density weighs more heavily. Besides the HVAC grid the Netherlands has HVDC interconnections with neighboring countries and there are initiatives for the use of DC high voltage connections to wind farms further out to sea. In our study, we make reference to a suitable location, where the above mentioned attractive features of the superconducting cable are applicable as well. We advised a modified design of a HTS HVDC cable which enables a possible upgrade of the transmission capacity of the HVDC link at such location. The main results from the investigation are that: \u95 Based on our techno-economic analysis HTS cables offer the most competitive solution in transmission grids. Introduction of such cables will reduce HTS tape price, which in turn will stimulate further applications. \u95 Conceptual designs of competitive HTS AC and DC transmission cables are formulated along with that for HTS AC distribution cable. Novel designs allow for much longer length between cooling stations. \u95 Our experimental research has shown that HTS cable core losses may be reduced by a factor 10 (down to 0.11 W/m/phase at 3 kArms, 77 K, 50 Hz). \u95 Dedicated low friction cable cryostat was developed and successfully tested for 47 meters length. Patented multi-layer thermal insulation improves the cable cryostat heat leak from 1 W/m to 0.1 W/m.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
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