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A POLYNOMIALLY BASED SPICE MODEL FOR HIGH ELECTRON MOBILITY TRANSISTORS (HEMTS)
Mahon, Simon,Skellern, David 대한전자공학회 1989 ICVC : International Conference on VLSI and CAD Vol.1 No.1
A new HEMT model that accurately predicts device DC and charge control characteristics is presented. The model features continuous and smooth device equations, validity for all regions of operation, computational efficiency and symmetry with respect to source and drain, making it suitable for implementation in SPICE.
The 50 Most Cited Papers in Craniofacial Anomalies and Craniofacial Surgery
Mahon, Nicola A,Joyce, Cormac W,Thomas, Sangeetha,Concannon, Elizabeth,Murray, Dylan Korean Society of Plastic and Reconstructive Surge 2015 Archives of Plastic Surgery Vol.42 No.5
Background Citation analysis is a recognized scientometric method of classifying cited articles according to the frequency of which they have been referenced. The total number of citations an article receives is considered to reflect it's significance among it's peers. Methods Until now, a bibliometric analysis has never been performed in the specialty of craniofacial anomalies and craniofacial surgery. This citation analysis generates an extensive list of the 50 most influential papers in this developing field. Journals specializing in craniofacial surgery, maxillofacial surgery, plastic surgery, neurosurgery, genetics and pediatrics were searched to demonstrate which articles have cultivated the specialty within the past 55 years. Results The results show an intriguing compilation of papers which outline the fundamental knowledge of craniofacial anomalies and the developments of surgical techniques to manage these patients. Conclusions This citation analysis provides a summation of the current most popular trends in craniofacial literature. These esteemed papers aid to direct our decision making today within this specialty.
Canada's Early Childhood Education and Care Policy: Still a Laggard?
Rianne Mahon 육아정책연구소 2009 International Journal of Child Care and Education Vol.3 No.1
Canada’s early childhood education and care (ECEC) system has fared poorly in recent international comparisons. Its laggard status can be attributed to the “liberal” character of its social policy regime and to the federal structure of the Canadian state. This paper argues, however, that there are signs of change. While these are currently most visible in certain provinces, the issue of creating an effective pan-Canadian ECEC framework is still very much alive on the federal agenda.
Use of a Barbed Suture Tie-Over Technique for Skin Graft Dressings: A Case Series
Kenneth M Joyce,Cormac W Joyce,Nicola Mahon,Jack L Kelly 대한성형외과학회 2015 Archives of Plastic Surgery Vol.42 No.3
Background A tie-over dressing is the accepted method to secure skin grafts in order to prevent haematoma or seroma formation. We describe the novel application of a barbed suture tie-over for skin graft dressing. The barbs act as anchors in the skin so constant tensioning of the suture is not required. Methods From January 2014 to August 2014 we used the technique in 30 patients with skin defects requiring split-thickness or full-thickness grafts. Patient demographics, clinicopathological details and graft outcome were collected prospectively. Results The majority of cases were carried out for split-thickness skin grafts (n=19) used on the lower limb (n=20). The results of this novel technique were excellent with complete (100%) graft take in all patients. Conclusions Our results demonstrate the clinical application of a barbed device for securing skin grafts with excellent results. We find the technique quick to perform and the barbed device easy to handle, which can be applied without the need for an assistant.
Use of a Barbed Suture Tie-Over Technique for Skin Graft Dressings: A Case Series
Joyce, Kenneth M.,Joyce, Cormac W.,Mahon, Nicola,Kelly, Jack L. Korean Society of Plastic and Reconstructive Surge 2015 Archives of Plastic Surgery Vol.42 No.3
Background A tie-over dressing is the accepted method to secure skin grafts in order to prevent haematoma or seroma formation. We describe the novel application of a barbed suture tie-over for skin graft dressing. The barbs act as anchors in the skin so constant tensioning of the suture is not required. Methods From January 2014 to August 2014 we used the technique in 30 patients with skin defects requiring split-thickness or full-thickness grafts. Patient demographics, clinicopathological details and graft outcome were collected prospectively. Results The majority of cases were carried out for split-thickness skin grafts (n=19) used on the lower limb (n=20). The results of this novel technique were excellent with complete (100%) graft take in all patients. Conclusions Our results demonstrate the clinical application of a barbed device for securing skin grafts with excellent results. We find the technique quick to perform and the barbed device easy to handle, which can be applied without the need for an assistant.
Obaid Ur Rahman,Jeena Kim,Caroline Mahon,Musharraf Jelani,강창수 한국유전학회 2021 Genes & Genomics Vol.43 No.5
Background Amyloidosis cutis dyschromica (ACD) is a rare variant of cutaneous amyloidosis. This disorder often clusters in families, and it has been suggested that genetic factors might be involved in its development. Objective To identify the genetic causes of ACD, we recruited a consanguineous Pakistani family with multiple cases of ACD that display a recessive mode of inheritance. Methods We performed whole-exome sequencing of samples from 7 members of this family, followed by bioinformatic and in silico analyses to identify the causative variant. For the replication study, we recruited a British family with Pakistani ancestry, and sequenced all exons of glycoprotein non-metastatic melanoma protein b (GPNMB) to identify mutations. We also investigated efects of the mutations on the stability of the GPNMB protein using the I-TASSER three-dimensional modeling tool. Results We found a novel homozygous mutation, p.Gly363Val (c.1088 G>T), in GPNMB in all afected cases. In a replication study, another homozygous missense mutation in GPNMB, pIle174Met (c.522 C>G), was carried by the afected son. The two mutations were not observed in our in-house data set comprising 217 healthy Pakistani individuals or in The Genome Aggregation Database. Our structural modeling of GPNMB suggested that p.Gly363Val enhanced its stability, whereas p.Ile174Met caused instability. Conclusions This study reports two novel missense mutations in two Pakistani families that cause ACD. The mutations appear to infuence GPNMB stability, as revealed by protein modeling.
New Formulations of Ethyl Formate to Control Internal Stages of Sitophilus oryzae
Lee, Byung-Ho,Huh, Wan,Ren, Yong-Lin,Mahon, Daphne,Choi, Won-Sik Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.4
Ethyl formate (EF) was tested in mixtures with natural products (NPs) as a fumigant against the internal stages of Sitophilus oryzae. These novel formulations of EF [EF:NPs = 9.0:1.0, (v/v)] were shown to be chemically stable for 1 month after initial mixing. Therefore, EF acts as a good solvent for various NPs having insecticidal activity. The toxicity of EF alone, and of the various EF formulations, was evaluated on each developmental stage at different concentrations and exposure times. The results show that the effect of EF alone, as compared with the various EF formulations, was similar or lower in the mixed age cultures (MAC) of S. oryzae after 6 hr of exposure. For the pupal stage of S. oryzae, EF + thujone showed increased toxicity (>20%) at both 6 hr of exposure at 67.4 mg/L, as well as at 24 hr of exposure at 37.6 mg/L. Also, EF + thujone, EF + menthone, and EF + carvone showed higher toxicities as compared to EF alone, on the pupal stage of S. oryzae after 24 hr of exposure at 37.6 mg/L. However, we couldn't find significant differences in the formulations in terms of their synergistic effects. The most significant result of this research was the ability to use EF as a solvent for the application of various natural materials as fumigants and/or protectants. Our continuing research is aimed at finding natural product formulations that possess enhanced toxicity with respect to the internal stages of stored grain pests, as well as low mammalian toxicity.
New Formulations of Ethyl Formate to Control Internal Stages of Sitophilus oryzae
Byung-Ho Lee,Wan Huh,YongLin Ren,Daphne Mahon,Won-Sik Choi 한국응용곤충학회 2007 Journal of Asia-Pacific Entomology Vol.10 No.4
Ethyl formate (EF) was tested in mixtures with natural products (NPs) as a fumigant against the internal stages of Sitophilus oryzae. These novel formulations of EF [EF:NPs=9.0:1.0, (v/v)] were shown to be chemically stable for 1 month after initial mixing. Therefore, EF acts as a good solvent for various NPs having insecticidal activity. The toxicity of EF alone, and of the various EF formulations, was evaluated on each developmental stage at different concentrations and exposure times. The results show that the effect of EF alone, as compared with the various EF formulations, was similar or lower in the mixed age cultures (MAC) of S. oryzae after 6 hr of exposure. For the pupal stage of S. oryzae, EF + thujone showed increased toxicity (>20%) at both 6 hr of exposure at 67.4 mg/L, as well as at 24 hr of exposure at 37.6 mg/L. Also, EF + thujone, EF + menthone, and EF + carvone showed higher toxicities as compared to EF alone, on the pupal stage of S. oryzae after 24 hr of exposure at 37.6 mg/L. However, we couldn’t find significant differences in the formulations in terms of their synergistic effects. The most significant result of this research was the ability to use EF as a solvent for the application of various natural materials as fumigants and/or protectants. Our continuing research is aimed at finding natural product formulations that possess enhanced toxicity with respect to the internal stages of stored grain pests, as well as low mammalian toxicity.