In this study, the structural integrity of the composite rocket motor case of a space launch vehicle was evaluated by conducting compression and bending tests. Two composite rocket motor case specimens with different stacking patterns were prepared for each test, and a dedicated jig was designed and manufactured. The test procedure was developed and applied separately for compression and bending tests. By performing these tests, the composite rocket motor case structural safety was assessed.

The human ELAV(embryonic lethal abnormal vision)-like protein HuR stabilizes a certain group of cellul ar mHNAs that contain AU- rich elements in their 3’ - untranslated region , To test the significance of HuR in carcinogenesis of head and neck squamous cell carcinomas(HNSCCs), we have investigated HuH expression from 32 benign epithelial lesions , 14 prema lignant epitheli al lesions and 80 HNSCCs, There were two different staining patterns of HuR in HNSCCs : nuclear expression was seen in 78 7% (63 of 80) 01' cases; and an additional cyto plasmic expression was seen in 28, 7%(23 of 80) 01 cases, Nuclear expression of HuR was s ignificantly increased in premalignant lesions and HNSCCs, whereas increased cytoplasπli c expression of HuR was only observed in HNSCCs Cytoplasmic HuR expression was significantly increased in pa tients of HNSCC younger than 60 yea rs , Al though there was no significant correlation between a natomic s ites of HNSCCs and HuR express ion , cyto plasmic HuR expression was highly increased in HNSCCs of larynx, There was no significant co rrela tion between HuR expression and other clinicopathological parameters such as histological type‘ tumor s ize‘ 0 1' n odal s tatus , ln conclusion, this study s uggests that overexpression of HuR in HNSCCs may be part of a regula tory pathway tha t co ntro ls the mHNA stability 0 1' several important targets in carcinogenesis of HNSCCs

Human saliva conta ins a la rge number of proteins and peptides whose composition may alter as a conseq uence of disease. '1'0 date‘ however. the proteins and peptides that routinely populate t his oral fluid are largely unknown, '1'0 provid e a ca ta logue 이， sali va protei ns. we have surveyed the unstimulated human whole saliva by using shotgun proteomics. F'or the shotgun a pproach‘ whole sali va proteins were digested into peptides with ChemDigestD and the res ulting pe ptide fragments were sepa rated by RP- HPLC, followed by each fraction was tryptic di gestion ChemDiges tD- Trypsin diges ted pe pt ides were analyzed by tandem mass spectrometry (MS!MS) using a nano-LC equi pped quadru po le-time of fli ght rnass spect rometer, and the obtained spectra were searched against human protein sequence da tabase us ing MASCOT Shotgun proteomics a llowed a total of 291 human proteins to be confidently assigned. The largest gro u p (17 , 2%) of the identifi ed proteins sorted into functional categories was included in the s ignal transducti on function except for the hypothet ical or unknown functio n, This work provides a valuable starting point for the ana lys is of human sa l i va ry protei ns a nd theil‘ biological functions and candidates from human whole saliva that may prove to be of diagn ost ic and t herapeutic s ignif‘ Ica nce

HuR(human embryonic-Iethal abnormal vi sion-like protein, ELAV)은 최근 염증반응 및 세 포성장 조절의 중요 기전 으로 관심 을 받고 있는 전사후 유진자 발한의 조절기전 에 관여한다 HuR은 3' -untranslated regi on에 AU- rich ele rn ents(ARE) 를 지닌 일부 mRNA들(에‘ c- fos, VEGF. COX• 2 동)의 안정화에 기여하여 mRNA의 증가 및 부가적인 딘백발 한을 증가시킨디 HuR 단백 은 이 러한 염증 및 세포성장의 생리적 기전 외에 종양발생과도 관련될 수 있으며 ‘ 유방암 난소 암 및 뇌 종잉 둥에서 f-luR의 발한증가가 보고된 바 있다 두경부 편평 세 포암종 전암성 및 양성 편평세포 병소를 대상으로 HuR의 발현양상을 띤역 조직회학적으로 살펴봄으로써 HuR의 발현이 두경부 펀평세포암종의 발생과 관련될 수 있는지 실펴 보고자 힌다 본 인 구는 80여1 의 두경부 편평세포암종 14 예의 전암성 편평세포병소 및 32 예의 양성 면평세포벙소를 실험대상 으로 이용히였다 두경 부 편평세 포암종은 AJCC(Amcrican Joint Comrnittee on Cancer) 의 분류법에 의한 TNM분류 ， 병리 조 직학적 분화정 도 및 발생부위 별로 구분히였다 면역조직화학적 염색은 mouse anti-HuR monoclonal antibody(ZymeCl Clone 3A2) 와 Envis ion kit (DAKO) 를 이용하였다 염색결괴는 2명의 병리의사가 독립적으로 결과를 평가한 후 x 2 test fol' trends (SPSS‘ ve l'si o n12) 로 통계분석을 행하였다 HuR 염색반응을 핵과 세포질 부위로 구분하여 평가하고 비 교한 결과， 핵 과 세 포질 염색 결 괴 모두 편핑세 포암종 전암성병소. 양성병소에서 유의한 차이경향을 보였으며‘ 편평 세 포암종의 경우 임상벙 기 및 발생부위에 따른 유의 한 치이경향을 보였다 특히 ， 후두에서 발생힌 편평세포암종은 세포질애서 강한 양성반응을 보였 다 본 연구결과， mRNA 안정화 인자인 HuR의 발현 및 세포 내 분포가 두경부 펀평세포암종에서 이상조절 됨 을 보였으며 그 이싱 조절 양상이 두정 부의 부위별로 차이가 있음을 확인하였다 따라서 향후에는 발현이상의 downstream effec ts 및 이} 후와의 관련성에 대힌 연 구기- 추가되어야 할 것은 여져진다