980 research outputs found

    Cesarean scar defects and placental abnormalities – a 3 year survey study

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    The placenta is an essential organ for embryonic and fetal development, ensuring nutrient uptake, gas exchange (via the mother\u27s blood supply), waste elimination, thermo-regulation, immunological and hormonal factors, etc. The most common placental abnormalities are represented by placenta previa, and a morbidly adherent placenta (in the form of accreta, increta, and percreta placenta). This study was performed on a sample of 99 patients diagnosed with abnormalities of placentation who underwent cesarian delivery during a period of 3 years in Bucur Maternity Hospital. Seven patients were diagnosed with morbidly adherent placenta (5 accreta and 2 percreta subtypes), the others having placenta previa (65 with lateral disposition, 18 marginal, and 9 central insertion). All patients had been diagnosed by ultrasound (which was also used for general monitoring), being confirmed during operation and histopathologically. Complications required 4 emergency peripartum hysterectomies, with no maternal mortality but with fetal death in one case. The research literature shows that about half of women with placenta previa have several episodes of bleeding, being the leading cause of antepartum hemorrhage. For some women with placenta previa/accrete, hemorrhaging is severe and requires hysterectomy as a necessary step to control the life-threatening situation. Thus, such patients should be carefully monitored to avoid as much as possible the medical, social, and psychological implications of this critical therapeutic procedure

    KNOWLEDGE MANAGEMENT,COGNITIVE CARTOGRAPHY AND VALUE CREATION IN THE ORGANIZATION

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    From the value of knowledge established in a disciplinary field by more specialists are moving to value theoretical knowledge in terms of utility that a company can hold in terms of a competitive advantage. Knowledge Management has been, to its appearance, an important response to knowledge management and knowledge to the enterprise. He was still lacking in knowledge management and knowledge-level departments and organizational level. Department of Human Resources remains the most involved in the implementation of Knowledge Management approaches, but has difficulties in their implementation, as used do not give the expected results in terms of value creation. The study proposes an inventory of the Knowledge Management difficulties in the enterprise in the process of creation and proposes a useful solution, represented by cognitive mapping. This tool and its methodology promote the emergence of knowledge and enable networking of heterogeneous knowledge. Through the analysis of example an cognitive card is shown the potential but also its limit.knowledge management, knowledge assessment, cognitive cartography, human resources, potential

    The Positioning of Universities in Collaborative Models as Clusters in a Knowledge Based Economy

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    The most significant research about knowledge based economy is concentrated on innovation. Research about entrepreneurial thinking at the university level and positioning of universities in collaborative models as clusters are in the early stages. The new approach that we propose in this research is positioning the university as a main promoter and integrator of organizations in clusters and innovations enterprises networks in a global network of knowledge. The results of this research are based on data that was obtained through questionnaires from organizations that are active in the ITC industry in the region of Bucharest-Ilfov. These characteristics are representative for different types of clusters.economic cluster, institutional cluster, objectives for cluster establishing, specialized knowledge

    Between Utopia and Dystopia: The Labilities of Nationalism in Eastern Europe

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    Also CSST Working Paper #90.http://deepblue.lib.umich.edu/bitstream/2027.42/51256/1/490.pd

    Control algorythm of a smart grid device for optimal radial feeder load reconfiguration

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    Abstract Secondary distribution network, generally speaking, performs as well as the performance of its LV feeders. The main problem a feeder is experiencing is the load unbalancing due to the stochastic nature of its individual single-phase loads: bigger losses in certain phase accompanied with bed voltage regulation and voltage unbalance. The aim of this paper is to address the issue of automatic balancing as progressing from the end of the feeder towards the front using smart device based on three-ways switch selector and artificial intelligence algorithm to minimize the neutral current

    High-grade cervical dysplasia in pregnancy – psychological and medical challenges

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    Despite being rare, the incidence of pregnancy-related cancer is expected to rise as women continue to delay childbearing and give birth later in their reproductive years. In this broad category, tumors like breast cancer, dermatological neoplasia and cervical cancer are most common and tend to arise in women of childbearing age. All pregnant women with clinical and cytologic suspicion of cervical cancer, except for squamous atypia or low-grade squamous intraepithelial lesions, should undergo colposcopy, with or without biopsy, the latter being avoided if possible due to possible complications which, although rare, may involve preterm labor initiation. Some studies have attempted to assimilate comparable results of USG with MRI during the gestational period by determining the sensitivity, specificity, and accuracy of trans-rectal ultrasound (TRUS) in comparison to magnetic resonance imaging (MRI). In order to identify the proper way to diagnose and treat the disease, because of the complexity due to pregnancy, a multidisciplinary team consisting of a gynecologist, medical and surgical oncologist, and radiologist should be assembled. Both maternal and fetal wellbeing should be taken into consideration when the medical team must choose among termination of pregnancy, delay of maternal treatment, and iatrogenic preterm delivery. Psychological counseling also plays an important role and due to the sensitivity of the issue, should continue through gestation and the postpartum. In order to develop optimal guidelines for diagnosis, treatment, and outcome issues, large scale prospective studies are needed, but feasibility may be limited due to the scarcity of cervical cancer cases associated with pregnancy

    The correlation between histopathological and ultrasound findings regarding Cesarean section scars – A three-year survey study

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    The cesarean operation represents a major surgery, with a higher risk of postoperative complications and longer postoperative recovery than vaginal delivery. Due to the increasing frequency of cesarean sections, the ultrasound imaging of the uterine scar has become a particularly useful tool in identifying its potential long-term complications. This should be done pre-conceptively and quarterly or whenever necessary during pregnancy. Currently, there are only few histopathological studies on the uterine scar, trying to assess the myometrial repair and certain factors that influence the quality of the scar. The study was performed on a batch of 123 patients with previous C-sections, with multiple ultrasound exams during pregnancy and post-operative pathologic evaluation of the uterine scar in order to assess the possibility of a new prognostic score by correlating these two factors. Our study found solid evidence related to possible correlations between histopathological and ultrasound data on the cesarean section scar, which could lead to a possible predictive algorithm with implications for both prognostic and therapeutic fields

    Brushless direct current motor efficiency characterization

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    Abstract: The use of a compact lightweight efficient propulsion system is one of the main technological requirements for a long endurance electric Unmanned Aerial Vehicle (UAV). Currently the most popular trend is to use a permanent magnet brushless direct current (BLDC) model motor. This type of motor is used because of its efficiency which can be greater than 90% when optimally driven. However the majority of manufacturers do not provide adequate performance response profiles throughout the specified motor applied voltage range. This paper presents a methodology to characterize the BLDC efficiency
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