3 research outputs found
Impact behavior of hybrid composite plates dependent on curing and different stacking sequences
No full textIn this study, the drop weight impact response of cured hybrid composite plates has been investigated. Experiments were conducted on two groups of hybrid composite plates. The first group was based on upper and lower surfaces that are made of carbon (c) with the inner plates of glass (g), while for the second group the upper and lower surfaces were examined which are made of glass (g) with the inner plates of carbon (c). The orientation angle of the plates was 0, 15, 30 and 45 degrees and the collision energy was 12 J. Contact forces were obtained and compared for the plates with respect to the different sequence and orientation angles. Peak forces increased for all the sequences and orientation angles. However, the (g-c-c-g) stacking sequence showed a larger sensitivity to an orientation angle change. The deflections decreased for the (c-g-g-c) stacking sequence when the orientation angle increased.DUBAP (Dicle University Scientific Research Project) [10-MF-157]The author would like to thank DUBAP (Dicle University Scientific Research Project) for supporting this study under project number 10-MF-157
Trichoblastoma in a Newborn: A Case Report
No full textTrichoblastoma is a benign skin tumor that arises from the hair germ, which is the precursor of the hair follicle. It is most frequently observed on the scalp and face. The occurrence of trichoblastoma in the pediatric population is extremely rare. As far as our research, we have not come across any reported case of trichoblastoma in newborns in the English literature. A 10-day-old male newborn was referred to our clinic because of swelling under the right neck since his birth. Physical examination revealed a painless, firm and mobile mass, approximately 3 cm in size on the right submandibular region. Magnetic resonance imaging showed a smooth contoured mass with diffuse contrast enhancement. Tru-cut biopsy results suggested that the tumor was composed of epithelial and myoepithelial component. Total mass excision was performed and the final pathological result was a trichoblastoma. The patient was discharged on the second day following the surgery and the subsequent two-year follow-up examination showed no signs of wound complications, indicating successful healing. Trichoblastoma should be taken into account in newborns with neck masses
Extra-gastrointestinal stromal tumor of the prostate - a case report and literature review
No full textExtra-gastrointestinal stromal tumors (EGISTs) primarily originate outside the gastrointestinal tract and are not associated with the walls of the stomach or intestines. They typically arise from the omentum, mesentery, peritoneum, retroperitoneum, and genitourinary regions. However, EGISTs originating from the prostate are exceedingly rare. Herein, a case is presented of an EGIST arising from prostatic tissue. The patient underwent radical prostatectomy. Histopathological examination revealed spindle-shaped tumor cells. Immunohistochemical analysis demonstrated positive expression of CD117, DOG-1, and CD34, leading to the diagnosis of a gastrointestinal stromal tumor (GIST). Radiologic staging showed no evidence of residual disease or metastasis; however, due to the high-risk nature of the tumor, adjuvant imatinib therapy was initiated. No recurrence or metastasis was observed during a one-year follow-up period, and the patient continues to be monitored regularly. This article also provides a comprehensive review of the clinical characteristics, histopathology, and treatment of EGIST cases reported in the literature
