Effects of Rolling Reduction and Strength of Composed Layers on Bond Strength of Pure Copper and Aluminium Alloy Clad Sheets Fabricated by Cold Roll Bonding

Three types of clad sheets, Cu/Al, Cu/AA5052, and Cu/AA5083, were produced by cold roll bonding with the rolling reduction of 50% and 75%. Tensile shear tests which give tensile shear strength were performed in order to assess the bond strength. Scanning electron microscopy was performed on the fractured interface produced by the tensile shear tests, which suggests that the fracture occurs within the Al alloy layer. The tensile shear strengths considering the area fraction of deposit of Al alloy on Cu side were compared with the shear stress converting from the ultimate tensile strengths. As a result, the tensile shear strength of the clad sheets is attributed to the shear strength of Al alloy layer close to the well bonded interface. A simple model was proposed that explains the effects of the rolling reduction and area fraction of deposit of Al alloy

Effects of radiofrequency ablation on individual renal function: assessment by technetium-99m mercaptoacetyltriglycine renal scintigraphy.

We quantitatively evaluated total and individual renal function by technetium-99m mercaptoacetyltriglycine (Tc-99m MAG3) renal scintigraphy before and after radiofrequency ablation (RFA) of renal tumors. Eleven patients who underwent Tc-99m MAG3 renal scintigraphy 1 week before and after RFA were evaluated (7 men and 4 women ; age range : 23-83 years ; mean age : 60.6 years). Five patients had solitary kidneys, and five had normally or minimally functioning contralateral kidneys. One patient had a renal cell carcinoma in the contralateral kidney. One patient with a solitary kidney underwent RFA a second time for a residual tumor. In patients with a solitary kidney, MAG3 clearance decreased after 5 of 6 RFAs, and in patients with a normally functioning contralateral kidney, MAG3 clearance decreased after 4 of 5 RFAs, but no significant differences were observed between before and after treatments. In addition to the total MAG3 clearance, the split MAG3 clearance was evaluated in patients with a normally functioning contralateral kidney. MAG3 clearance decreased in 4 of 5 treated kidneys, while it adversely increased in the contralateral kidneys after 4 of 5 RFAs. No significant differences, however, were observed between before and after treatments. The results of our study revealed no significant differences in sCr, BUN, CCr, or MAG3 clearance between pre- and post-RFA values. These results support data regarding the functional impact and safety of renal RFA in published reports. We evaluated total and individual renal function quantitatively using Tc-99m MAG3 renal scintigraphy before and after treatment. This scintigraphy was very useful in assessing the effects of RFA on renal function

Percutaneous sclerotherapy for venous malformations using polidocanol under fluoroscopy.

This retrospective study evaluated the safety and efficacy of using polidocanol with X-ray fluoroscopy for percutaneous sclerotherapy of venous malformations of the limbs, head, and neck. The subjects were 16 of 18 patients who presented to our department with venous malformations. Two patients were excluded because they were unlikely to benefit from the treatment. Of the 16 included in the study, 1 could not be treated because of inaccessibility, and another was lost to follow-up. Among the 14 cases that we were able to follow-up, 11 cases had had pain as their primary symptom. Following treatment, this symptom remained unchanged in 1 patient, was improved in 4, and had disappeared in 6; however, there was a recurrence of pain for 3 of these patients. Two patients had sought treatment for cosmetic purposes; following treatment, the lesion disappeared in one and showed a significant reduction in the other. The remaining patient presented with a primary symptom of mouth bleeding, which disappeared following treatment. There were no critical complications. Percutaneous sclerotherapy of venous malformations using polidocanol is safe and effective, and permits repeat treatments. The efficacy is especially good for resolving pain, and complications are minor. It is desirable to use fluoroscopy for these procedures</p

Radiofrequency Ablation of Lung Cancer at Okayama University Hospital: A Review of 10 Years of Experience

The application of radiofrequency ablation for the treatment of lung cancer by our group at Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences began in June 2001, and in the present report, we review our 10-year experience with this treatment modality at Okayama University Hospital. The local efficacy of radiofrequency ablation for the treatment of lung cancer depends on tumor size and the type of electrode used, but not on tumor type. An important factor for the prevention of local failure may be the acquisition of an adequate ablative margin. The combination of embolization and radiation therapy enhances the local efficacy. Local failure may be salvaged by repeating the radiofrequency ablation, particularly in small tumors. Survival rates after radiofrequency ablation are quite promising for patients with clinical stage I non-small cell lung cancer and pulmonary metastasis from colorectal cancer, hepatocellular carcinoma, and renal cell carcinoma. The complications caused by radiofrequency ablation can be treated conservatively in the majority of cases. However, attention should be paid to rare but serious complications. This review shows that radiofrequency ablation is a promising treatment for patients with lung cancer

Radiofrequency ablation followed by radiation therapy for large primary lung tumors

We report the clinical experience of radiofrequency ablation followed by radiation therapy for large primary lung tumors. Two patients with large primary lung tumors were treated with combined radiofrequency ablation and radiation therapy, and good local control was observed. Combined radiofrequency ablation and radiation therapy that involves minimally invasive techniques appears to be promising for the treatment of large lung tumors

ハイヨウセイ キンイシュク ニ エイキョウ オ アタエル インシ ト ソノ エイキョウ

ベッドレストによる廃用性筋萎縮を予防し, 身体機能の低下を最小限に留める方法・手段を考え知ることは, 理学療法士という対象者の身体機能の向上を目的とする専門職に就く上で必須である. ベッドレストに伴う筋萎縮の発生機序・原因を, 内分泌系, 栄養管理, 筋線維の解剖学的・生理学的知識, 筋を支配する神経系の廃用といった多様な観点から理解し, 筋萎縮予防策を想起することとした. 筋線維における解剖学的・生理学的知識を整理しつつ, 筋を支配する神経系の廃用予防, 内分泌系に対するアプローチ, 筋萎縮と栄養面との関係性, 有効なトレーニング方法について, 各書籍・過去の先行研究に基づき再考した. 結果として, ベッドレスト患者の筋力低下に対してアプローチする際には, 筋力増強訓練の方法・負荷量, 対象者の栄養状態・睡眠状態を加味し, 内分泌による筋タンパクの異化・同化の相互性を考慮する必要性が示唆された. 【I はじめに】 筋力増強・筋肥大に関するトレーニング方法はメディア・書籍等で多く紹介されている.Physical Therapists are professional who are improvement of the functional handicap. Then it is indispensable to know the method and means which prevents a bed-rest patient\u27s disuse muscle atrophy and stops less the physical function as low as we can. We tried to understand a cause and a process with internal secretion system, nutrition, anatomy and physiology of muscle, atrophy of nervous system. Also we suggested how prevent the muscle atrophy and training menu with the past books and go ahead of research. Lastly, let us comment on the way of the approach to less muscle. We suggested that it is necessary to consider a method of muscle training, power of resistance, patient\u27s state of nutritional and sleep. In addition, we have to reflect on a correlation of dissimilation and assimilation of muscle protein by internal secretion system