25 research outputs found
Cyclic temperature and humidity effects on bond between CFRP and concrete
No full textOne of the most important characteristics of CFRP-strengthened concrete members is their endurance in the operating environment. In the application of CFRP as an external retrofitting technique, strength and performance of the system are directly influenced by environmental factors such as temperature and humidity. However, the system should also be able to withstand mechanical forces on it under varying long term environmental conditions. Therefore, the evaluation of the effects of simultaneous exposure to both mechanical stresses and environmental factors is a critical issue. This thesis contains detail numerical and experimental analysis on long-term bond performance of cfrp strengthened concrete members. [Author edited abstract]
Application of Protective Cultures and Bacteriocins for Food Biopreservation
No full textThis eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contac
Extra medullar Granulocytic sarcoma: a case report of an exceptional localization
No full textGranulocytic sarcoma is a rare type of tumor composed of extramedullary immature cells. The breast location is very rare; it accounts for less than 8% of cases. The present study reports the case of a 36-year-old female with a medical history of myelodysplastic syndrome. She was referred because of a lump in the left breast. We have diagnosed a case of granulocytic sarcoma of the breast by core biopsy. Histology and immunohistochemistry showed hypercellular smears with immature myeloid cells. The blast cells were myeloperoxidase positive.
The patient underwent a lumpectomy. Five months later, she developed a contralateral recurrence, treated by lumpectomy and radiotherapy. Three years later, she developed a recurrence in the left knee.
We report this case for its rarity and as a note of caution to a physician to consider myeloid sarcoma in the differential diagnosis of a breast lump, to provide the correct diagnosis and avoid incorrect treatment of a curable disease
UNLEASHING KNOWLEDGE CREATION AND SHARING IN A REFLECTIVE OPEN EDUCATION
No full textThe volume of knowledge that engineers are collectively called upon to know is increasing far more rapidly than the capability of engineering curricula to cover it. This reality necessitates rethinking a learner-centered pedagogy by moving from acquisition and possession of knowledge to creation of knowledge, which comes about through reflection, sharing, and interaction in an active learning environment. This paper explores such pedagogy of blended learning that may contribute to the development and mastery of competencies and advance the quality of engineering education. This pedagogy is based on the knowledge creation framework of “acquire-reflect-share-apply” to boost students’ creativity and innovation in two engineering disciplines (Electrical and Mechanical) at the University of Ottawa. Peer evaluation and questionnaire were administered to measure the effectiveness of reflection practice to students’ learning. Presented also are two open educational resources (g9toengineering.com; greenengineers.ca) developed by the author as an online model to enable knowledge sharing and transfer
Tian invariant on generalized Calabi manifold
No full textIn this article we calculate the Tian invariant on some Fano manifolds. These manifolds generalize those introduced by the first author in collaboration with Pascal Cherrier, in Ben Abdesselem and Cherrier (2009 [1]). The method used is to determine explicitly the lower bound for almost psh functions
Pure dysgerminoma of the ovary: a study of 31 cases
No full textMalignant germ cell tumors of the ovary are rare tumors characterized by their heterogeneity and occurring mostly in young women. Dysgerminoma is the most common type of these tumors. This was a retrospective study of 31 patients with pure dysgerminoma of the ovary diagnosed in Salah Azaiez institute of Tunis in Tunisia between 1970 and 2012.The median age was 22 years old. Abdominal pain was the most complaint in 45.1% of cases. An abdomino-pelvic mass was found in 83.8% of cases. Surgery was performed in all patients. The median tumoral size was 13.7 cm. Sixty four-point five percent of the patients underwent a conservative surgery. The tumor was classified stage I in 51.6% of the cases, stage II in 9.7% of the cases, stage III in 35.5% of the cases and stage IV in 3.2% of the cases. Fourteen patients received platinum-based adjuvant chemotherapy, and 10 patients had a radiotherapy. We have noticed 2 cases of recurrence and 2 cases of metastasis. Five-year and ten-year overall survival was 89.4%. Five-year disease free survival was 85.2% and ten-year disease free survival was 66.3%. Dysgerminomas of the ovary have a good prognosis. The two significant prognostic factors are the stage and the postoperative residual disease
Perineal psödo-kontinan kolostomi üzerinde alt rektal karsinom rekürrensinin başarılı tedavisi: Bir olgu sunumu ve literatürün gözden geçirilmesi
No full textFertility sparing surgery for stage Ic ovarian cancer: An eight case series
No full textIntroduction. One case out of 3 cases of primary ovarian cancer is diagnosed at an early stage. Almost 15% of ovarian cancers are diagnosed in women who are within the range of procreation age, raising the debate on the feasibility of fertility-sparing surgery (FSS) for those tumors. In the case the patient is admitted with stage 1A or 1B in most histologic types, it is still controversial in stage 1C. Results and Discussions. This is an eight-patient-case series. The median age is 27 years old (ranging from 18 to 42). The main clinical manifestation was pelvic pain (87.5%). Four patients (50%) presented with tumor torsion. All patients underwent FSS; five of them (62.5%) had conservative staging, two (25%) underwent salpingooophorectomy and one (12.5%) ovariectomy, type histo + stade Figo. The chemotherapeutic treatment was administered to four patients (50%) following surgery without major side effects. One patient (12.5%) presented a loco regional recurrence that occurred 14 months later. She was treated with combined chemotherapy and radical surgery. One patient out of eight (12.5%) achieved a natural pregnancy after the treatment and another one (12.5%) was submitted to an assisted reproductive procedure which did not result in a viable pregnancy. Conclusion. FSS seems to be a suitable approach for stage 1C ovarian cancer. However, more case series and meta-analyses should be conducted
A Numerical Experiment with the Stern-Gerlach Geometry
No full textThe Stern-Gerlach (SG) experiment reported in 1922 was an important milestone in the history of physics. The passing of a collimated neutral beam of silver atoms through a long, strong and asymmetrical magnet caused the atoms of silver out of a horizontal slit to split roughly into two separate beams forming a hollow lip figure (as seen on a plate held normal to the beam) instead of being a filled-in lip figure as suggested by some theoretical calculations. The SG results were thought to indicate that the observed phenomenon can not be explained using classical physics. Following a classical numerical approach by the author using a double-slit geometry, results are given for a 3D numerical SG type experiment showing clearly that a binary beam splitting is possible for certain conditions using an inverse square relation as the only source of forces- thus giving the possibility of a classical interpretation to the problem. For simplicity, we use what is mathematically equivalent- a dipole of charges to represent the magnetic dipole of the atom, and sets of fixed charges or potential surfaces around the path of the beam to represent the poles of a magnet. Although not exactly following the SG setup, the present results, nonetheless, are useful in showing the clear discrete behavior that can be caused by the combination of a fixed boundary, a strong field asymmetry and the highly nonlinear mapping of the inverse square law of forces coupled with the spin direction of a particle
