994 resultados para 197-1203A


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本论文的工作:利用两体裂变角关联技术,辅之以飞行时间测量,测定了47MeV/u的~(12)C轰击~(197)Au和~(209)Bi靶中心碰撞对应的线性动量转移(LMT),得到了关联裂片出射的共面歧离分布,同时还发现了关联角很小且共面歧离很大的裂变事件,并得到了其相对速度分布。从测到的LMT分布中,得到中心碰撞对应的最可几线性动量转移约占入射动量的65%,相应于单核子线性动量转移约为192MeV/c.A,进而还估算出了所形成热核的激发能上限。在对关联裂片出射的共面歧离效应研究中,发现了共面歧离宽度是热核激发能的较好量度之一。并给出了共面歧离宽度跟热核单核子激发能的经验关系;还用简化的裂片级联蒸发模型估算了蒸发中子、质子和α粒子的平均多重性

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通过对中能区Ar+Au/Tb/Ag反应中高激发核的发射时标、发射次序、发射机制、核温度、集体运动等衰变特性的研究,提取了轻粒子和中等质量碎片(IMF)的发射时间,IMF发射时间随束流能的升高而变短,发射机制逐渐由相继衰变过渡至多重碎裂。研究了轻粒子和碎片间的发射次序,对高能粒子和碎片,轻粒子先于碎片发射,而低能时,则为碎片先于轻粒子发射。IMF发射成分与角度和碰撞参数有关,前角区来自于弹核碎裂,后角区来自于类靶热核的蒸发。在平面和出平面研究表明,中速粒子和碎片为在平面发射占主导,即存在类转动效应;对轻粒子,转动效应随粒子质量增加而增加;对中速产物均观测到该效应随碰撞参数饿增大而增大。采用几种不同的方法提取了热核的核温度,研究了不同方法之间的区别。

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14 fotografías a color y en tono de grises.

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Servicios registrales

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On 2 June 2005, the Australian Government announced a proposal to amend s. 197 of the Corporations Act. This is to overturn the decision in Hanel v. O'Neill ("Hanel") where the South Australian Supreme Court has expanded the circumstances in which directors of trustee companies can be held personally liable for the debts under the current section 197(1) of the Corporations Act 2001 (Cth). The multiple interpretations presented in Hanel highlighted the uncertainty of s. 197 and this uncertainty is heightened in at least two subsequent cases. The article provides a detailed analysis of how the decision in Hanel is affecting the directors' freedom of management and suggests some precautionary measures that the directors could take as protection against creditor's actions under s. 197. The author welcomes the proposed amendment because the new section will create certainty for directors as to. the scope of their potential personal liability, but contends that the substance of the proposed s. 197 is not acceptable as there is potential for abuse by directors of certain trustee companies.

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The majority decided in Hanel v O’Neill that directors of trustee companies
could be held personally liable to discharge the debts incurred by a
company pursuant to s 197(1) of the Corporations Act 2001 (Cth). On
18 November 2005, legislation was passed to amend s 197(1); this was to
overturn the decision. This article evaluates other relevant cases and
argues that the recent amendment to s 197 is unsatisfactory as it leaves
potential for abuse by directors of certain trustee companies. The article
suggests further reform to the section and to this end, suggests ways for
s 197 to reconcile with other parts of corporate law, such as insolvent
trading and directors’ duties.

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The Marion Allan Wright Papers consist of correspondence, a journal, autobiographical writings, bibliographies, biographical data, essays, speeches, book reviews, short stories, poems, letters to the editor, oral history transcripts and other papers. Subjects include the death penalty, the civil rights movement, civil liberties, libraries in South Carolina and politics. Correspondents include R. Beverly Herbert, L. Mendel Rivers, J, William Fulbright, Sam Ervin, Jr., Reverend James P. Dees, Preston Wright (Wright's brother) and other relatives. See Acc 48 for an earlier accession of Wright papers and the oral history collection for recorded interviews with Wright.

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Cross Reacting Material 197(CRM197) is a Diphteria toxin non toxic mutant that had shown anti-tumor activity in mice and humans. CRM197 is utilized as a specific inhibitor of heparin-binding epidermal growth factor (HB-EGF), that competes for the epidermal growth factor receptor (EGFR), overexpressed in colorectal cancer and implicated in its progression. We evaluated the effects of CRM197 on HT-29 human colon cancer cell line behaviour and, for CRM197 recognized ability to inhibit HB-EGF, its possible effects on EGFR activation. In particular, while HT-29 does not show any reduction of viability after CRM197 treatment, or changes in cell cycle distribution, in EGFR localization or activation, they show a change in gene expression profile analyzed by microarray. This is the first study where the CRM197 treatment on HT-29 show the alteration of a specific and selected number of genes.

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Complications and failures after microvascular free tissue transfer for lower extremity reconstruction have a negative impact on postoperative course and final outcome. Therefore, a 10-year analysis on lower extremity reconstruction with free flaps was performed with a special emphasis on patient co-morbidities such as cardiovascular diseases, diabetes mellitus, body mass index and history of smoking, in order to identify potential risk factors. Complications such as haematoma, seroma, infection, wound dehiscence, as well as partial flap loss, postoperative thrombosis of the anastomosis and eventual total flap loss were gathered from the medical records. Limb salvage was 100%, however 40% suffered from complications ranging from minor wound dehiscence to total flap loss. None of the above-mentioned potential risk factors was associated with an increased rate of complications. However, in flaps that required revision for thrombosis, the age of the patients was significantly higher in the group of flaps that eventually failed when compared to flaps that were salvaged. In conclusion, lower extremity reconstruction with microvascular free tissue transfer is a safe and reliable procedure with a high success rate, however partial flap loss remains an important issue. Increased age was the only factor identified with an increased risk for subsequent flap loss in cases that were revised for thrombosis.