Seung Hyun Lee

The performance of a cellular network can be significantly improved by employing many base stations (BSs), which shortens transmission distances. However, there exist no known results on quantifying the performance gains from deploying many BSs. To address this issue, we adopt a stochastic-geometry model of the downlink cellular network and analyze the mobile outage probability. Specifically, given Poisson distributed BSs, the outage probability is shown to diminish inversely with the increasing

Two Haemaphysalis longicornis ticks were found positive in PCR assay of com-1 gene to detect Coxiella burnetii DNA from 100 ticks. The nucleotide sequences of com-1 and 16S rRNA gene were determined from 2 ticks and compared with those of other C. burnetii strains. The results suggest that H. longicornis harbor Coxiella sp. bacteria in Korea. Furthermore, icd, cbhE', and cbbE' genes are C. burnetii specific genes whereas com-1 gene is Coxiella genus specific gene. This study gives the first docu

The nucleotide sequences (534 to 546 bp) of the groEL gene, which encodes the 60-kDa heat shock protein GroEL, from 15 rickettsial strains were determined and compared. In the phylogenetic tree created by the unweighted pair group method with arithmetic averages and the neighbor-joining method, rickettsial strains could be distinguished from Ehrlichia strains. Five spotted fever group strains, four typhus group strains, and six scrub typhus group (STG) strains were differentiated as distinct ent

US-guided VABB is an accurate and safe method that can help decision-making in the diagnostic process and can be an alternative for excisional surgery in some therapeutic circumstances.

The nucleotide sequences of the groEL genes, the flagellin genes, and the 16S rRNA genes from 22 reference strains of Borrelia were compared. groEL sequence analysis is useful not only in interspecies differentiation but also in intraspecies differentiation of Borrelia afzelii and Borrelia garinii isolates.

The nucleotide sequences (310 bp) of the groEL gene, which encode the 60-kDa heat shock protein GroEL from 31 reference strains of Borrelia were determined and compared. More than 92.3% similarity was observed among Borrelia burgdorferi sensu lato strains. In the phylogenetic tree constructed with the maximum-likelihood method, each species of B. burgdorferi sensu lato was differentiated as a distinct entity. We developed polymerase chain reaction-restriction fragment length polymorphism analysi

Significance Programmed cell death 5 (PDCD5) plays a pivotal role in cellular apoptosis. Pathological relevance of PDCD5 is mostly found in human cancers; however, the role of PDCD5 in noncancerous diseases is not fully elucidated. Here we show that mice with endothelial PDCD5 deficiency have elevated serum nitric oxide levels and an atheroprotective effect in blood vessels. In addition, PDCD5 disrupts the HDAC3–protein kinase B (PKB/AKT) interaction and inhibits AKT-eNOS signaling and nitric ox

Primary isolated extramedullary plasmacytoma is a rare tumor. Although it commonly involves nasopharynx or upper respiratory tract, only 10% of cases involves the gastrointestinal tract. Stomach and small intestine are the most commonly involved sites in the gastrointestinal tract. Primary isolated extramedullary plasmacytoma of colon is extremely rare. We report a case of 45-year-old man who presented with 1-year history of lower abdominal pain. Colonoscopy showed a colonic stricture about 50 c

Various tumors can occur in the scrotum. Of them, angiomyofibroblastoma-like tumors are very rare mesenchymal tumors. Angiomyofibroblastoma-like tumors cannot be easily differentially diagnosed from other malignant tumors invading the male genital tract on the basis of clinical characteristics and imaging study. Therefore, surgical removal and a histopathologic diagnosis must also be performed.

Although POAF was related to LTAF in both genders, cumulative survival free of LTAF was poorer among females than among males. Additionally, a significant correlation with long-term mortality after CABG was observed among female patients with POAF.

민주주의의 발전과 함께 확대ㆍ정립되어 온 표현의 자유는 헌법에 의해 최대한 보장되어야 하는 기본권이자 민주주의 성립의 전제요소로 자리매김하고 있다. 그러나 표현의 자유의 제한입법을 축소하는 흐름 속에서 20세기 들어 국제사회에서 가시화된 혐오표현은 새로운 화두를 던졌고, 이는 최근 한국에서도 새롭게 사회문제로 제기되기 시작하였다. 헌법상 표현의 자유의 제한 법리에서 혐오표현의 제한가능성을 논하기에 앞서 먼저 혐오표현의 개념을 확정할 필요가 있다. 새로이 인지되기 시작한 특정형태의 표현을 제한할 것인가의 논의에서 선행되어야 할 것은 문제되는 해당 표현행위에 대한 명확한 개념정의이다. 이는 기본권으로서의 표현의 자유를 합헌적으로 제한할 수 있는가를 논의하기 위한 전제이자, 제한의 헌법적 정당화 단계에서 고려되어야 하는 쟁점들을 파악하기 위한 기초이다. 따라서 이 논문은 먼저 혐오표현에 대한 법적 제한을 논하기 위한 전제로서 혐오표현의 개념을 규명하고 그 유형을 검토한다. 그 다음으로 이

(CBW) on DOX-induced cardiotoxicity (DICT). We utilized H9c2 rat cardiomyocytes and MDA-MB-231 human breast cancer cells to evaluate the effects of CBW on DOX-induced cell death. Superoxide dismutase (SOD) levels, reactive oxygen species (ROS) production, and oxygen consumption rate were measured in H9c2 cells. C57BL/6 mice were treated with DOX and CBW to assess their impact on various cardiac parameters. Human-induced pluripotent stem-cell-derived cardiomyocytes were also used to investigate D