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- 저자 : Haroon-ur-Rashid (검색결과 2 건)
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Locking Compression Plate in Musculoskeletal Oncology ‘a Friend in Need’
Masood Umer,Kashif Abbas,Shahid Khan,Haroon ur Rashid 대한정형외과학회 2013 Clinics in Orthopedic Surgery Vol.5 No.4
Background: We are presenting our experience in the use of locking compression plate (LCP) after juxta-articular oncological resections in addition to its use in pathologic fracture. Methods: A retrospective audit of skeletal reconstruction using LCP in 25 cases of long bone tumors was performed from 2008 to 2010. Reconstruction following limb salvage surgery was done in 17 patients and internal fixation of pathological fracture was done in 8 patients. All patients were available for > 12 months of follow-up, and thus assessed for union at the resected ends. Results: There were 8 males and 17 females in the study. The average age at the time of surgery was 30 years (range, 9 to 66 years). The minimum follow-up was 12 months (range, 12 to 32 months). All patients except three went on to heal successfully. Complications occurred in those three patients: wound infection in one, nonunion in another, and periprosthetic fracture in the other patient. In the remaining patients, union was achieved at an average of 6.5 months after reconstruction in curative resection and 4.75 months after fixation of pathological fractures. Conclusions: Joint sparing limb salvage surgery was made successfully possible after sekeletal reconstruction with LCP. Its use was also quite effective in pathological fractures with poor bone quality. Use of locking plates for musculoskeletal oncological reconstruction resulted in a good and predictable rate of union.
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Adsorption of methyl orange using self-assembled porous microspheres of poly(o-chloroaniline)
Muhammad Naveed Anjum,Heqing Tang,Mohammad Zuber,Khalid Mahmood Zia,Lihua Zhu,Haroon-ur-Rashid,Mirza Nadeem Ahmad 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.12
Self-assembled hollow microspheres poly(o-chloroaniline) (POC) have been synthesized by simple oxida-tive polymerization of o-chloroaniline using camphor-sulfonic acid (CSA) as dopant acid and ammonium persulfate(APS) as oxidant. The POC microspheres were characterized by means of FTIR, XRD and SEM analysis. Adsorptioncharacteristics of POC spheres were studied by using methyl orange (MO) as adsorbate. It was found that adsorptionof MO by POC was better described by pseudo-second-order kinetics than any other kinetic model, such as the pseudo-first-order and intra-particle diffusion models. Langmuir adsorption isotherm model was the best to fit experimentaldata. The results showed that hollow microspheres of POC can be used as novel and low-cost adsorbent for removalof organic dye from waste water.
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