Pore Structure of Calcium Sulfoaluminate Paste and Durability of Concrete in Freeze–Thaw Environment

Kyle de Bruyn,Eric Bescher,Chris Ramseyer,홍성원,강현구 한국콘크리트학회 2017 International Journal of Concrete Structures and M Vol.11 No.1

Mercury intrusion and nitrogen sorption porosimetry were employed to investigate the pore structure of calcium sulfoaluminate (CSA) and portland cement pastes with cement-to-water ratio (w/c) of 0.40, 0.50, and 0.60. A unimodal distribution of pore size was drawn for CSA cement pastes, whereas a bimodal distribution was established for the portland cement pastes through analysis of mercury intrusion porosimetry. For the experimental results generated by nitrogen sorption porosimetry, the CSA cement pastes have a smaller and coarser pore volume than cement paste samples under the same w/c condition. The relative dynamic modulus and percentage weight loss were used for investigation of the concrete durability in freeze–thaw condition. When coarse aggregate with good freeze–thaw durability was mixed, air entrained portland cement concrete has the same durability in terms of relative dynamic modulus as CSA cement concrete in a freeze–thaw environment. The CSA cement concrete with poor performance of durability in a freeze–thaw environment demonstrates the improved durability by 300 % over portland cement concrete. The CSA concrete with good performance aggregate also exhibits less surface scaling in a freeze–thaw environment, losing 11 % less mass after 297 cycles.

Outcome of Laparoscopic Liver Resection for Patients with Old Age

Kyle Gervin Y. Ong 대한외과학회 2020 대한외과학회 학술대회 초록집 Vol.2020 No.11

Hyponatremia of 100 mEq./1tr. Associated with Pituitary Adenoma : A Case Report

Kyle, Robert H.,Lee, Hwa Dong,Jeon, Byung Chan 고신대학교 의학부 1985 高神大學校 醫學部 論文集 Vol.1 No.1

본 44세 남자환자로 내원 12개월 전부터 성욕감퇴, 20일 전부터 식욕 감퇴, 오심, 구토를 주소로 입원했다. 내원 당시 탈수현상을 보였으며 2일후 의식이 변화(혼미)와 한차례의 대발작증세를 보였다. 뇨와 혈청 소견상 혈중 나트륨치가 100mEq/L, 혈중 Cortisol치가 1.1mEq/24hrs, 요비중은 변동이 있었으나 1.004까지 보였고, 그 외는 정상범위였다. 단순두개골 방사선학적 소견으로는 터키 안장부위가 커져있고 부분결손을 보였으며 뇌 전산화 단층 촬영 소견으로는 터어키 안장상부 및 왼쪽에 팽대된 뇌하수체종양을 보였다. 수술요법과 방사선요법을 받았으며, 현재 투약없이 비교적 안정된 일상생활을 영위하고 있다.

Landscape Changes: Assessing Pennsylvania State Park Viewsheds Across the Marcellus Shale Region

Kyle Nicholas 한국국토정보공사 2016 지적과 국토정보 Vol.46 No.2

The Marcellus Shale industry has impacted Pennsylvania since 2005 and has been a major driver of land use change ever since. The Pennsylvania state park system has been facing encroachment from this industry ever since the first Pennsylvania wellpad was drilled in 2008. Previous research conducted overviews the impacts associated with this industry in regards to environmental quality, but there is limited research associated with the social impacts. The conducted research overviews the Marcellus Shale industry in regards to encroachment on Pennsylvania state parks through a GIS analysis. The purpose of the research is to evaluate how the viewsheds (areas of vision from a given point) of Pennsylvania state park land has been impaired by the Marcellus Shale industry. The results of the research show how the landscape of state parks have change due to the Marcellus Shale industry, and also a focus will be placed on scenic vistas (areas that highlight spectacular views within state parks) of selected parks to see to what extent that pristine landscape has been altered. The results of the research will help provide an idea of landscape change utilizing a GIS analysis and hopefully help to guide future growth.

Does body mass index influence improvement in patient reported outcomes following total knee arthroplasty? A retrospective analysis of 3918 cases

( Kyle W. Lawrence ),( Walter Sobba ),( Vinaya Rajahraman ),( Ran Schwarzkopf ),( Joshua C. Rozell ) 대한슬관절학회 2023 대한슬관절학회지 Vol.35 No.-

Purpose The study aimed to determine whether body mass index (BMI) classification for patients undergoing total knee arthroplasty (TKA) is associated with differences in mean patient reported outcome measure (PROM) score improvements across multiple domains―including pain, functional status, mental health, and global physical health. We hypothesized that patients with larger BMIs would have worse preoperative and postoperative PROM scores, though improvements in scores would be comparable between groups. Materials and methods Patients undergoing primary TKA from 2018 to 2021 were retrospectively reviewed and stratified into four groups: Normal Weight; 18.5-25 kg/m², Overweight; 25.01-30 kg/m², Obese; 30.01-40 kg/ m², and Morbidly Obese > 40 kg/m². Preoperative, postoperative, and pre/post-changes (Δ) in knee injury and osteoarthritis, joint replacement (KOOS, JR) and Patient-Reported Outcome Measurement Information System (PROMIS) measures of pain intensity, pain interference, physical function, mobility, mental health, and physical health were compared. Multivariate linear regression was used to assess for confounding comorbid conditions. Results In univariate analysis, patients with larger BMIs had worse scores for KOOS, JR and all PROMIS metrics preoperatively. Postoperatively, scores for KOOS, JR and PROMIS pain interference, mobility, and physical health were statistically worse in higher BMI groups, though differences were not clinically significant. Morbidly obese patients achieved greater pre/post-Δ improvements in KOOS, JR and global physical health scores. Multivariate regression analysis showed high BMI was independently associated with greater pre/post-Δ improvements in KOOS, JR and global health scores. Conclusion Obese patients report worse preoperative scores for function and health, but greater pre/post-Δ improvements in KOOS, JR and physical health scores following TKA. Quality of life benefits of TKA in obese patients should be a factor when assessing surgical candidacy.

Korean Students` Perceptions of the Importance of Being Able to Explain Their Culture in English in the World of Today

Kyle Philip Devlin 미래영어영문학회 2012 미래영어영문학회 학술대회 자료집 Vol.2012 No.12

This paper’s purpose is to bring to light the views of Korean university students about the importance of being able to explain their culture in this new, globalized world of 2012. This research looks at the views of Korean undergraduate students at a university in Korea by using a questionnaire. The research showed that the ability to explain Korean culture in English was viewed as highly important in the world of today. The ability to explain Korean culture was seen as something that was frustratingly lacking when interacting with non-Koreans; many of which, according to the students’ responses, knew very little about Korea. The ability to explain Korean culture in English was also considered important in that it was a way a way of promoting Korea as a country to those around the world.

EAI U.S.-China Relations Statement Factsheet October 2013

Kyle Cassily 재단법인 동아시아연구원 2013 EAI 미중관계 시리즈 Vol.- No.-

Combined orthogeriatric and fracture liaison service for improved postfracture patient care

Kyle M. Schweser,Brett D. Crist,Vu H. Nguyen 대한골다공증학회 2017 Osteoporosis and Sarcopenia Vol.3 No.3

The article by Yeap et al. [1] brings necessary attention to the subject of managing osteoporotic fractures, as nearly threequarters of patients in their study who suffered from fractures were not placed on treatment regimens, and the few who were received it for only around a month. We agree with the authors that this is a missed opportunity to prevent future fractures, and that their study shows the need to establish a fracture liaison service (FLS) to increase the treatment rate after the occurrence of an osteoporotic fracture. In addition, we believe that the FLS combined with other services can further improve care and outcomes for patients suffering from osteoporotic fractures. A current review of recent studies on osteoporosis management found that the FLS model of care is effective in initiating and adhering to osteoporosis treatment, and it is cost-saving in decreasing secondary fracture risk, but a combination of the FLS with the orthogeriatric (OG) service models of care may be an even more effective approach towards long-term bone health, as it can be a cost-effective method of further decreasing secondary fracture risk and mortality [2]. An OG service is generally a collaboration between an orthopaedic surgeon and a geriatrician, and usually centers on an osteoporotic fracture. While results have been inconclusive in the past regarding the effectiveness of involving a geriatrician in postfracture care, recent data has shown that the OG model likely has an impact on mortality, and patients were “more likely to receive preoperative medical assessments, have greater recognition of postoperative medical problems, and have implementation of long-term osteoporosis management” [3e5]. Both FLS and OG models have proven costeffectiveness [6]. The 2 models appear to be effective on their own, and while the exact model eludes us, some inference can be made that a dual approach may offer the best medical care for the patient while in the hospital, as well as coordinating care effectively upon discharge. The collaboration and communication between primary care and subspecialties has traditionally been poor [7]. Perhaps combining an OG service with an FLS would help mitigate these communication problems by placing the physicians in direct contact with each other over the ongoing care of patients. Post osteoporotic fracture care has improved recently, but there is significant room for advancement, and while implementation of an FLS is a step in the right direction, consideration should be made towards the inclusion of an OG service as well.

EAI U.S.-China Relations Statement Factsheet September 2013

Kyle Cassily 재단법인 동아시아연구원 2013 EAI 미중관계 시리즈 Vol.- No.-

EAI U.S.-China Relations Statement Factsheet October 2013

Kyle Cassily 재단법인 동아시아연구원 2013 EAI 기타간행물 Vol.- No.-