图书馆在构建读者创新精神和能力中的作用

在提出"对美感的追求是构建创新精神和能力的原动力"基础上,对图书馆如何构建读者创新精神的氛围提出了3点对策。     

外伤性迟发性颅内血肿的CT随诊观察

目的：探讨外伤性迟发性颅内血肿形成的高发时间.方法：搜集通辽市科尔沁区第一人民医院1999-01～2004-12间810例外伤病人的头部CT图像资料,并对其进行回顾性的分析总结.结果：4～24小时复查CT发现迟发性脑内血肿27例占迟发性颅内血肿总数的69%,48小时复查CT发现迟发性颅内血肿9例占迟发性颅内血肿总数的23%,72小时复查CT发现迟发性颅内血肿3例占迟发性颅内血肿总数的8%.结论：外伤性迟发性颅内血肿多出现在外伤后24小时内,伤后24小时内应严密观察患者状况,不能依赖首次CT检查结果.一旦出现头痛、呕吐加剧、意识障碍进行性加重或术后病人状态好转后又加重均应立即复查CT,及时发现新的迟发性颅内血肿,将患者的死亡率及致残率降至最低.     

化学实验中含铬废水的处理

将含铬废液浓缩后,在弱碱性条件下沉淀过滤.沉淀在酸性条件下加热溶解氧化后再次过滤分离沉淀,两次滤液合并.用稀硫酸调节pH为7～8,蒸发水份,并冷却到室温结晶,再经重结晶提纯得到产品重铬酸钾.经分析,产品纯度达96%以上.     

建设创新型企业必须不断开发创造力

建设创新型国家必须把企业建设成为创新型企业。创新型企业要拥有自主创新的技术、产品与服务，那么，企业的自主创新能力从何而来？实践证明：创造力来自于人，企业只有不断开发员工的创造力，拥有创造力强的员工队伍，才能始终坚持自主创新，建设成为创新型企业。     

Proliferation and differentiation into endothelial cells of human bone marrow mesenchymal stem cells （MSCs） on poly DL-lactic-co-glycolic acid （PLGA） films

Autologous, allograft and synthetic vessels currently used in clinical vessel replacement have many defi- ciencies, especially in the area of small caliber vessel replacement. The supply of autologous arteries or veins may not be sufficient or suitable fo…     

基于KG逻辑的3GPP AKA协议形式化分析与改进

3GPP AKA协议的设计者使用BAN逻辑对协议进行形式化的分析，并生成所有的安全目标已经达到。但是由于BAN逻辑的局限性，设计者并没有找到协议对于重定向攻击和重放攻击的脆弱性。本文给出基于信仰变化的KG逻辑方法，指出脆弱性所在，并对改进后的协议方案进行验证。     

Inactivation of the mouse melanocortin-3 receptor results in increased fat mass and reduced lean body mass

Genetic and pharmacological studies have defined a role for the melanocortin-4 receptor (Mc4r) in the regulation of energy homeostasis. The physiological function of Mc3r, a melanocortin receptor expressed at high levels in the hypothalamus, has remained unknown. We evaluated the potential role of Mc3r in energy homeostasis by studying Mc3r-deficient (Mc3r(-/-)) mice and compared the functions of Mc3r and Mc4r in mice deficient for both genes. The 4-6-month Mc3r-/- mice have increased fat mass, reduced lean mass and higher feed efficiency than wild-type littermates, despite being hypophagic and maintaining normal metabolic rates. (Feed efficiency is the ratio of weight gain to food intake.) Consistent with increased fat mass, Mc3r(-/-) mice are hyperleptinaemic and male Mc3r(-/-) mice develop mild hyperinsulinaemia. Mc3r(-/-) mice did not have significantly altered corticosterone or total thyroxine (T4) levels. Mice lacking both Mc3r and Mc4r become significantly heavier than Mc4r(-/-) mice. We conclude that Mc3r and Mc4r serve non-redundant roles in the regulation of energy homeostasis.     

超声在未破裂型宫外孕诊断中的作用

目的探讨超声对未破裂型宫外孕诊断的价值。方法回顾分析280例B超首诊宫外孕患者的临床、超声检查及手术病理资料。结果全部病例均显示附件区包块,其中257例经病理证实为宫外孕,23例经随访确诊为早期宫内妊娠合并黄体囊肿。结论超声检查在未破裂型宫外孕诊断中具有较大的临床应用价值,但需与孕早期黄体囊肿鉴别。