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RECENT DEVELOPMENTS IN DIFERENTIAL GEOMETRY AND MATHEMATICAL PHYSICS
Flaherty, F.J. Korean Mathematical Society 1987 대한수학회보 Vol.24 No.1
I want to focus on developments in the areas of general relativity and gauge theory. The topics to be considered are the singularity theorms of Hawking and Penrose, the positivity of mass, instantons on the four-dimensional sphere, and the string picture of quantum gravity. I should mention that I will not have time do discuss either classical mechanics or symplectic structures. This is especially unfortunate, because one of the roots of differential geometry is planted firmly in mechanics, Cf. [GS]. The French geometer Elie Cartan first formulated his invariant approach to geometry in a series of papers on affine connections and general relativity, Cf. [C]. Cartan was trying to recast the Newtonian theory of gravity in the same framework as Einstein's theory. From the historical perspective it is significant that Cartan found relativity a convenient framework for his ideas. As about the same time Hermann Weyl in troduced the idea of gauge theory into geometry for purposes much different than those for which it would ultimately prove successful, Cf. [W]. Weyl wanted to unify gravity with electromagnetism and though that a conformal structure would fulfill thel task but Einstein rebutted this approach.
[특집]Biosolids Disposal in 2006 and Beyond: An Overview
John Flaherty 유기성자원학회 2007 유기물자원화 Vol.15 No.1
A cont inuing problem faced by governments worldwide is the safe and cost effective disposal of human waste sludge or biosolids. This document will focus on t he United States, although its findings and conclusions have applicability in other countries. The central premise is that the wastewater treatment field is facing growing difficulties with current approaches to the processing and disposal of sludge. As a result, it is beginning to move away from widely used methods such as incineration, land fill ng, land application, and composting. Increasingly these will be replaced or augmented by a heavier emphasis on volume reduction through heat drying .
( Jin Woo Song ),( Kevin R Flaherty ),( Athol U Wells ),( Vincent Cottin ),( Anand Devaraj ),( Yoshikazu Inoue ),( Luca Richeldi ),( Simon Walsh ),( Susanne Stowasser ),( Carl Coeck ),( Rainer-georg G 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-
Background: Nintedanib is an approved treatment for idiopathic pulmonary fibrosis (IPF). Pre-clinical data suggest that nintedanib inhibits processes fundamental to progression of lung fibrosis irrespective of the aetiology. The INBUILD trial was designed to investigate the efficacy and safety of nintedanib in patients with various non-IPF chronic fibrosing ILDs with progressive phenotype. Methods: Eligible patients had diffuse fibrosing lung disease of >10% extent on HRCT, FVC ≥45% predicted, DLCO ≥30-<80% predicted, and met ≥1 of 4 criteria for ILD progression (Table) in the 24 months before screening, despite treatment of ILDs in clinical practice. Patients with IPF were excluded. Subjects were randomised to receive nintedanib 150 mg bid or placebo. The primary endpoint is the annual rate of decline in FVC (mL/yr) assessed over 52 weeks. There will be two co-primary analysis populations: all subjects and subjects with a UIP-like fibrotic pattern only on HRCT. Results: 663 patients were randomised and treated (Table). Mean (±SD) age was 65.8±9.8 years, FVC was 69.0±15.7% predicted, DLco was 47.6±32.2% predicted. Conclusions: The INBUILD trial will provide insights into the natural history and role of nintedanib in treating patients with various progressive fibrosing ILDs. Results will be presented at the congress.
Polyurethane-Coated Breast Implants Revisited: A 30-Year Follow-Up
Castel, Nikki,Soon-Sutton, Taylor,Deptula, Peter,Flaherty, Anna,Parsa, Fereydoun Don Korean Society of Plastic and Reconstructive Surge 2015 Archives of Plastic Surgery Vol.42 No.2
Background Polyurethane coating of breast implants has been shown to reduce capsular contracture in short-term follow-up studies. This 30-year study is the longest examination of the use of polyurethane-coated implants and their correlation with capsular contracture. Methods This study evaluates the senior surgeon's (F.D.P.) experience with the use of polyurethane-coated implants in aesthetic breast augmentation in 382 patients over 30 years. Follow-up evaluations were conducted for six months after surgery. After the six-month follow-up period, 76 patients returned for reoperation. The gross findings, histology, and associated capsular contracture were noted at the time of explantation. Results No patient during the six-month follow-up period demonstrated capsular contracture. For those who underwent reoperation for capsular contracture, Baker II/III contractures were noted nine to 10 years after surgery and Baker IV contractures were noted 12 to 21 years after surgery. None of the explanted implants had macroscopic evidence of polyurethane, which was only found during the first five years after surgery. The microscopic presence of polyurethane was noted in all capsules up to 30 years after the original operation. Conclusions An inverse correlation was found between the amount of polyurethane coating on the implant and the occurrence of capsular contracture. Increasingly severe capsular contracture was associated with a decreased amount of polyurethane coating on the surface of the implants. No contracture occurred in patients whose implants showed incomplete biodegradation of polyurethane, as indicated by the visible presence of polyurethane coating. We recommend research to find a non-toxic, non-biodegradable synthetic material as an alternative to polyurethane.
( W Ray Kim ),( Rohit Loomba ),( Selim Gurel ),( John Flaherty ),( Eduardo B Martins ),( Leland J Yee ),( Phillip Dinh ),( Maria Buti ),( Patrick Marcellin ) 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1
Background: Patients with chronic hepatitis B Virus (HBV) infection are at increased risk for hepatocellular carcinoma (HCC). Population-based studies have suggested an increased risk of hepatocellular carcinoma (HCC) in patients with higher levels of HBV-DNA. Therefore, it is possible that anti-viral therapy that reduces HBV-DNA levels may reduce the occurrence of HCC. We examined the clinical and demographic characteristics of HCC cases in patients receiving tenofovir disoproxil fumarate (TDF). Methods: We studied the clinical and demographic characteristics of the 641 patients enrolled in pivotal studies GSUS- 174-0102 and GS-US-174-0103. Results: During the first 288 weeks of studies 102/103, there were 13 cases of HCC. Three cases occurred during the first 48 weeks. 9/13 cases were HBeAg-negative and 3 of these were cirrhotic. 4/13 cases were HBeAg-positive at baseline and 3 of these were cirrhotic. 11/13 cases were male. 2/13 patients had regression of histological cirrhosis on repeat liver biopsies. Among the 13 HCC cases, 5 were genotype (gt)-D, 4 gt-C, 1 gt- B, 1 gt-E, 1 gt-F and 1 unable to genotype. Conclusions: In 288 weeks of TDF therapy, there were only 13 cases of HCC. 3 of the HCC cases were reported within the first 48 weeks of therapy. Despite the small number of cases, HCC surveillance needs to be done in patients on long-time oral antivirals.
Santosh K. Choudhari,Federico Cerrone,Trevor Woods,Kieran Joyce,Vincent O’ Flaherty,Kevin O’ Connor,Ramesh Babu 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.23 No.-
Polyether block amides (PEBA) composite membranes were prepared by dispersing different two dimensional (2D) layered nanomaterials such as graphene, graphene oxide and molybdenum disulphide (MoS2) in PEBA matrix. These composite membranes were applied for the pervaporation separation of butyric acid produced by anaerobic digestion (AD) of perennial grass. Among all the tested membranes PEBA–graphene membrane showed the best performance with butyric acid flux og 24.3 g/m2h and separation factor of 21. Further on varying the graphene content in the membranes showed improved separation efficiency with increased thermal and mechanical properties of the membranes
Polyurethane-Coated Breast Implants Revisited: A 30-Year Follow-Up
Nikki Castel,Taylor Soon-Sutton,Peter Deptula,Anna Flaherty,Fereydoun Don Parsa 대한성형외과학회 2015 Archives of Plastic Surgery Vol.42 No.2
Background Polyurethane coating of breast implants has been shown to reduce capsular contracture in short-term follow-up studies. This 30-year study is the longest examination of the use of polyurethane-coated implants and their correlation with capsular contracture. Methods This study evaluates the senior surgeon’s (F.D.P.) experience with the use of polyurethanecoated implants in aesthetic breast augmentation in 382 patients over 30 years. Follow-up evaluations were conducted for six months after surgery. After the six-month follow-up period, 76 patients returned for reoperation. The gross findings, histology, and associated capsular contracture were noted at the time of explantation. Results No patient during the six-month follow-up period demonstrated capsular contracture. For those who underwent reoperation for capsular contracture, Baker II/III contractures were noted nine to 10 years after surgery and Baker IV contractures were noted 12 to 21 years after surgery. None of the explanted implants had macroscopic evidence of polyurethane, which was only found during the first five years after surgery. The microscopic presence of polyurethane was noted in all capsules up to 30 years after the original operation. Conclusions An inverse correlation was found between the amount of polyurethane coating on the implant and the occurrence of capsular contracture. Increasingly severe capsular contracture was associated with a decreased amount of polyurethane coating on the surface of the implants. No contracture occurred in patients whose implants showed incomplete biodegradation of polyurethane, as indicated by the visible presence of polyurethane coating. We recommend research to find a non-toxic, non-biodegradable synthetic material as an alternative to polyurethane.