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Delta Neutrophil Index is a Predictor of Disease Severity in Patients with Acute Pyelonephritis
( Geun Woo Ryu ),( Hyung Woo Kim ),( Seohyun Park ),( Sul A Lee ),( Jonghyun Jhee ),( Su-young Jung ),( Hyung Jung Oh ),( Jung Tak Park ),( Seung Hyeok Han ),( Shin-wook Kang ),( Tae-hyun Yoo ) 대한내과학회 2015 대한내과학회 추계학술발표논문집 Vol.2015 No.1
Background: Delta neutrophil index (DNI) is the fraction of immature granulocytes provided by a complete blood count analyzer. Previous studies demonstrated that DNI is a novel marker to predict outcomes in sepsis patients. Therefore, this study aimed to evaluate DNI as a predictor of disease severity in patients with acute pyelonephritis (APN). Methods: Patients diagnosed with APN at Severance Hospital from December 2009 to July 2012 were retrospectively investigated. DNI levels were measured at the time of admission. The patients were classified into two groups according to the median value of DNI at baseline. Severe APN was diagnosed with one or more of these conditions including bacteremia, acute kidney injury, hypotension requiring use of vasopressors and admission of intensive care unit. Independent risk factors for severe APN were determined by multiple logistic regression analysis. Receiver operating characteristic (ROC) curves were plotted for DNI, white blood cell (WBC) count and C-reactive protein (CRP). Results: A total of 258 patients were included in this study. The median age was 61.0 (19.0-87.0), 237 patients (91.9%) were female, and the median DNI level was 2.5%. Severe APN was significantly more prevalent in high DNI group. Multivariate analysis showed that DNI, WBC count and CRP level independently predicted severe APN. DNIwas a better predictive marker of severe APN than WBC count, as reflectd by area under the ROC curve analysis (0.697 [95% CI, 0.637-0.753] vs. 0.562 [95% CI, 0.499-0.624], p=0.0013). DNI was not inferior to CRP levels to predict severe APN (0.697 [95% CI, 0.637-0.753] vs. 0.633 [95% CI, 0.571-0.692], p=0.1185). Conclusions: DNI level at admission is a valuable predictor of disease severity in patients with APN.
직류 가정용 All-in-one 컨버터의 최적 운전 기법
윤혁진(Hyeok-Jin Yun),박시호(Si-Ho Park),정동근(Dong-Geun Jeong),유명효(Myung-Hyo Ryu),백주원(Ju-Won Baek) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
본 논문에서는 직류 수용가용 All-in-one 컨버터의 일반적인 구성 및 제어 방법을 제안한다. PV, ESS, 연료 전지 등의 다양한 분산전원과 연계되는 직류 배전 시스템은 직류 계통과 연계하기 위하여 다수의 직류 컨버터를 요구하며 기본적으로 부하 공급용 컨버터, PV용 컨버터, ESS용 컨버터 등 다수의 컨버터를 구성하여 전력 제어를 수행한다. 본 논문에서는 기존의 다수의 컨버터를 대체하여 다수의 출력을 갖는 하나의 컨버터로 전체 시스템의 전력제어가 가능한 다채널 컨버터를 적용하였다. 하나의 제어기를 사용하여 전체 입/출력에 대한 전압/전류 정보를 이용하여 All-in-one 컨버터의 전력 제어를 수행하여 계통 연계 운전 및 독립 운전에서 최적 제어가 이루어지는 것을 확인할 수 있었다.
Multiple Hypercoagulability Disorders at Presentation of Non-Small-Cell Lung Cancer
Lee, Jeong Min,Lim, Jun Hyeok,Kim, Jung-Soo,Park, Ji Sun,Memon, Azra,Lee, Seul-Ki,Nam, Hae-Seong,Cho, Jae-Hwa,Kwak, Seung-Min,Lee, Hong Lyeol,Kim, Hyun-Jung,Hong, Geun-Jeong,Ryu, Jeong-Seon The Korean Academy of Tuberculosis and Respiratory 2014 Tuberculosis and Respiratory Diseases Vol.77 No.1
Hypercoagulability disorders are commonly encountered in clinical situations in patients with a variety of cancers. However, several hypercoagulability disorders presenting as first symptoms or signs in cancer patients have rarely been reported. We herein described a case of a woman with adenocarcinoma of the lung presenting with deep vein thrombosis, nonbacterial thrombotic endocarditis, recurrent cerebral embolic infarction, and heart failure.