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류지선,Hamill, Joseph,O'connor, Kris 한국체육대학교 체육과학연구소 2000 韓國體育大學校附屬 體育科學硏究所論文集 Vol.19 No.1
The purpose of this study was to investigate the kinematic and kinetic differences between standard 3/4 heel and no-heel shoes during the golf swing. Five proficient golfers (3 to 10 handicap) were used as subjects. They stood with each foot on a force platform and swung the same 7 iron. 3D kinematic data were recorded for the lower and upper extremities, club, and ball. The results were as follows: 1.The no-heel condition had greater vertical and antero-posterior forces at the feet at impact 2.Subjects generated greater torque about the vertical axis under the no-heel condition. 3.The width of the swing from top to impact was greater in the no-heel condition. 4.There were no differences in the velocity of the club head, direction of ball flight, and lower extremity joint angles between the two conditions. This study concluded that no-heel golf shoes may provide a more powerful hitting platform. However, it appears that meaningful benefit in terms of ball flight and velocity would have to be explored in a longer-term training study.
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O'Connor, David,Hou, Deyi,Ok, Yong Sik,Song, Yinan,Sarmah, Ajit K.,Li, Xuanru,Tack, Filip M.G. Elsevier 2018 Journal of controlled release Vol.283 No.-
<P><B>Abstract</B></P> <P>The removal of recalcitrant organic pollutants in groundwater is a challenge being faced around the world. Achieving effective long-term remediation of contaminated aquifers faces a variety of significant issues such as back diffusion, tailing, and rebound. In recent years, some researchers have proposed the use of controlled release materials (CRMs) as a new approach to counteracting such issues. The novelty of CRMs lies in that they release their active products slowly, over prolonged periods of time, in order to sustain in situ treatments and long-term effectiveness. Here we review the main constituents of CRMs, analyze their production, characterization, and applications, with a focus on reaction mechanisms, effectiveness, and secondary effects. This review shows that the reactive components of CRMs most commonly involve either: (i) chemical oxidants to treat contaminants such as TCE, PCE, BTEX, and 1,4-Dioxane; (ii) sources of dissolved oxygen to stimulate aerobic biodegradation of contaminants such as BTEX and 1,4-Dioxane; or, (iii) substrates that stimulate reductive dechlorination of contaminants such as TCE and 1,2-DCA. It was found that in some studies, CRMs provided sustained delivery of CRM treatment reagents over several years, and achieved complete contaminant removal. However, lower removal rates were apparent in other cases, which may be ascribed to insufficient dispersion in the subsurface. There are a relatively limited number of field-scale applications of CRMs in contaminated land remediation. Those conducted to date suggest that CRMs could prove to be an effective future remediation strategy. Lessons learned from field applications, suggestions for future research directions, and conclusions are put forward in this review.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Long-term remediation of groundwater remains very challenging. </LI> <LI> Researchers have proposed the use of a variety of controlled release materials. </LI> <LI> They can release chemical oxidants, sources of dissolved oxygen, or substrates. </LI> <LI> Some controlled release materials can sustain reagent release for several years. </LI> <LI> Future research needs are put forward to help further develop these materials. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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O'Connor, James T.,Torres, Neftali,Kralik, Nancy,Woo, Jeyoung Korea Institute of Construction Engineering and Ma 2018 Journal of construction engineering and project ma Vol.8 No.1
Achieving sustainability targets on construction projects has increasingly become one of the prime strategies for construction organizations. To provide more detailed guidance on sustainability implementation on projects, Construction Industry Institute (CII) Research Team (RT) 304 developed a catalog of the Construction Phase Sustainability Actions (CPSAs). The primary objective of this paper was the development of two support tools, the CPSA Screening Tool and the CPSA Implementation Index, that could be used to enable efficient application of CPSAs, support sustainability-related decisions, and measure CPSA implementation and performance. The authors developed the tools in four stages: conceptual, detailed planning, tool programming, and testing. The tools were then demonstrated on a capital project to confirm their efficacy and applicability. This paper presents the background, inputs and outputs, and the algorithms of each tool. The CPSA Screening Tool can prioritize the CPSAs most relevant to a project; the CPSA Implementation Index enables continuous monitoring of implementation levels.
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Sarcopenia and Post-Operative Morbidity and Mortality in Patients with Gastric Cancer
O'Brien, Stephen,Twomey, Maria,Moloney, Fiachra,Kavanagh, Richard G.,Carey, Brian W.,Power, Derek,Maher, Michael M.,O'Connor, Owen J.,O'Suilleabhain, Criostoir The Korean Gastric Cancer Association 2018 Journal of gastric cancer Vol.18 No.3
Purpose: Surgical resection for gastric adenocarcinoma is associated with significant post-operative morbidity and mortality. The aim of this study was to assess the prognostic significance of sarcopenia in patients undergoing resection for gastric adenocarcinoma with respect to post-operative morbidity and survival. Materials and Methods: A retrospective analysis was conducted on a cohort of consecutive patients who underwent surgical resection for gastric adenocarcinoma between 2008 and 2014. Patient demographics, radiological parameters, and pathological data were collected. OsiriX software (Pixmeo) was used to measure skeletal muscle area, which was normalized for height to calculate skeletal muscle index. Results: A total of 56 patients (41 male, 15 female; mean age, $68.4{\pm}11.9years$) met the inclusion criteria. Of these, 36% (20 of 56) of the patients were sarcopenic pre-operatively. Both sarcopenic and non-sarcopenic patient groups were equally matched with the exception of weight and body mass index (P=0.036 and 0.001, respectively). Sarcopenia was associated with a decreased overall survival (log-rank P=0.003) and was an adverse prognostic predictor of overall survival in multivariate analysis (hazard ratio, 10.915; P=0.001). Sarcopenia was a predictor of serious in-hospital complications in multivariate analysis (odds ratio, 3.508; P=0.042). Conclusions: In patients undergoing curative resection for gastric cancer, there was a statistically significant association between sarcopenia and both decreased overall survival and serious post-operative complications. The measurement and reporting of skeletal muscle index on pre-operative computed tomography should be considered.
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Highly selective trace ammonium removal from dairy wastewater streams by aluminosilicate materials
Elaine O’Connor,Oisin N. Kavanagh,Drahomir Chovan,David G. Madden,Patrick Cronin,Ahmad B. Albadarin,Gavin M. Walker,Alan Ryan 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.86 No.-
Water is a key solvent, fundamental to supporting life on earth. It is equally important in many industrialprocesses, particularly within agricultural and pharmaceutical industries, which are major drivers of theglobal economy. The results of water contamination by common activity in these industries is well knownand EU Water Quality Directives and Associated Regulations mandate that NH4+ concentrations ineffluent streams should not exceed 0.3 mg L 1, this has put immense pressure on organisations andindividuals operating in these industries. As the environmental andfinancial costs associated with waterpurification begin to mount, there is a great need for novel processes and materials (particularlyrenewable) to transform the industry. Current solutions have evolved from combating toxic sludge to theuse of membrane technology, but it is well known that the production of these membrane technologiescreates a large environmental footprint. Zeolites could provide an answer; their pore size and chemistryenable efficient removal of aqueous based cations via simple ion exchange processes. Herein, wedemonstrate efficient removal of NH4+ via both static and dynamic methodology for industrialapplication. Molecular modelling was used to determine the cation–framework interactions which willenable customisation and design of superior sorbents for NH4+ capture in wastewater.
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Jack O’Connor,Keston Lindsay,Cynthia Baker,Jessica Kirby,Andrea Hutchins,Margaret Harris 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.12
The purpose of this study was to examine the impact of ashwagandha (ASH) (Withania somnifera) on sleep, perceived stress, and cravings in a college student population. Sixty healthy students were screened/enrolled into a 30-day double-blinded placebo (PLA)-controlled intervention (700 mg daily, full spectrum extract of ASH root). Anthropometrics, demographics, and validated questionnaires assessing physical activity, restorative sleep, perceived stress, and food cravings were assessed before and after the study. Descriptive statistics, Pearson's correlations, and point biserial correlations were used to screen the data. For sleep and stress, a nonsignificant mixed (group × time) multivariate analysis of variance (MANOVA) was followed by one-way MANOVA (time on sleep/stress) and one-way multivariate analysis of covariance (MANCOVA) (group on sleep/stress, using initial sleep as a covariate) as follow-up tests. Further follow-up tests for this MANCOVA showed group membership affected final sleep (58.4 ± 12.4 vs. 48.2 ± 15.0 ASH vs. PLA respectively, P < .05) using initial sleep as a covariate. Initial sleep (confounder) affected final stress, but not final sleep. Mixed analysis of variance (group × time) showed an interaction effect on food cravings, where the ASH group experienced lower cravings than the PLA group over time at end of study. The 30-day intervention was shorter than most other studies where more pronounced stress differences were seen at six weeks, indicating ASH may need the longer time period to show more pronounced stress relieving differences. ASH can be an effective safe intervention in young adult populations to help manage stress and its detrimental impacts on sleep and satiety in as little as 30 days. Clinical Trial Registration number-NCT05430685.
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