Microstructure, Mechanical Properties and Fracture Behavior of α Particle Irradiated Type 316 Stainless Steel

The present work is a research of the effect of helium on the microstructure, mechanical properties and fracture behaviors of a type 316 austenitic steel. Helium implantation was performed by 30-MeV α-particle injection on very small size specimens, using a cyclotron. Average helium content in a He-deposited region was up to 2000 appm He. In the case of 2000appm He implantation, intergranular fracture was sometimes observed on the helium deposited region after tensile test at room temperature. At elevated temperature test, however, this material showed the transition of fracture mode from transgranular-ductile fracture at 773K to intergranular fracture at 873. In the case of 500 appm He implantation, the transition of fracture mode was recognized at a temperature range of 873K to 973K

当院における80歳以上の高齢者頚髄症に対する手術成績の検討

京都府立医大附属北部医療センター　整形外科Department of Orthopaedics, North Medical Center, Kyoto Prefectural University of Medicine高齢者に対する脊椎脊髄手術が増加傾向にあるが、高齢者では既往症や合併症のリスクが高いことから手術の適応に慎重になる場合がある。当院で手術をした80歳以上の頚髄症患者の手術成績を、発症から手術までの期間で2群に分けて検討したところ、早期に手術した群の成績が良好であった。合併症や入院期間、転帰は同等であった。頚髄症高齢者に対して適切な手術時期を逸しないことが良い臨床成績を得るために重要であると考えた

大腿骨近位部骨折患者の術前CTを用いた大腿四頭筋と歩行能力との相関

京都府立医科大学附属北部医療センター　整形外科Department of Orthopaedic Surgery, North Medical Center, Kyoto Prefectural University of Medicine大腿骨近位部骨折患者124例の術前CT像を用いて、対側大腿骨小転子レベルの大腿四頭筋水平断像でCT値と断面積を計測し、受傷前・退院時の歩行能力との関係を調査した。歩行能力は、独歩・杖歩行を自立歩行群として、歩行器歩行や車椅子移動を介助移動群に分類した。退院時自立歩行が可能であった患者では、健側大腿四頭筋のCT値が有意に高値であり、術前CT像を用いた骨格筋評価は予後予測に有用である可能性がある。(著者抄録

手術療法を施行した90歳以上の大腿骨近位部骨折患者の転帰に関する調査

京都府立医科大学附属北部医療センター整形外科Department of Orthopaedic Surgery，North Medical Center, Kyoto Prefectural University of Medicine高齢化率の高い当地域における90歳以上の大腿骨近位部骨折術後患者111 例の転帰について調査した。受傷前と最終調査時の歩行能力と生活環境の変化、認知症との関連について検討した。結果、歩行器歩行以上の歩行能力が獲得できたのは61% であった。独居では在宅復帰率がさらに低下し、重度の認知症が歩行能力低下とリハビリテーション継続を困難とするため、急性期病院として認知症の進行予防と早期の退院支援が必要と考えた

Evaluation of antioxidant status and oxidative stress markers in follicular fluid for human in vitro fertilization outcome

Abstract Purpose Antioxidant status and oxidative stress markers in human follicular fluid (FF) surrounding oocytes may be related to the outcomes of in vitro fertilization and embryo transfer (IVF‐ET). Therefore, we herein examined the relationship between antioxidant status and oxidative stress markers in FF and the outcomes of IVF‐ET. Methods One hundred and seventeen infertile women were included in this study. FF was obtained from mature follicles at the time of oocyte retrieval. The total antioxidant capacity (TAC) and total glutathione (GSH), vitamin C, and 8‐ hydroxy‐2′‐deoxyguanosine (8‐OHdG) concentrations were measured. Results Total GSH levels were lower in patients who had a low fertilization rate after intracytoplasmic sperm injection (ICSI). In addition, 8‐OHdG levels were higher in patients who had a low fertilization rate after ICSI and low rate of good quality blastocysts. Total GSH activity was lower in patients with endometriosis. No significant differences were noted in pregnancy outcomes. Conclusions Total GSH and 8‐OHdG in human FF may be potential markers for fertilization in ART. Also, our findings may suggest that oxidative stress in women with infertility is associated with endometriosis