[[pingyin]]Song Ben Shi San Jing Zhu Shu Fu Jiao Kan Ji: Er Ya

[[note]]（晉）郭璞注；（宋）邢昺疏；邢昺等校定[[edition]]光緒丁亥脈望仙館石印[[line]]單魚尾，四邊單欄；半頁二十行；板心上刻「十三經注疏」，魚尾下刻「爾雅○ ○○○ 頁碼」。[[source]]香港大學馮平山圖書館

[[pingyin]]Er Shi Er Zi Quan Shu: Shan Hai Jing

[[note]]（晉）記室參軍郭璞傳；畢沅新校正[[edition]]光緒3年浙江書局據畢氏靈巌山館本校刻[[line]]單魚尾，上下邊單欄，左右邊雙欄；半頁九行，行二十一字；魚尾下刻「山海經第○ 頁碼」。[[source]]香港大學馮平山圖書館贈[[person]]乾隆46年9月9日畢沅撰、郭璞注山海經

Experimental Study on Building Mass Damper Using Optimum Dynamic Response Control Algorithm

採隔震設計之建築物於近年來快速成長，相較於一般基礎隔震在基礎施工以及相鄰建築物相接處理上較為繁瑣，中間層隔震因其施工性而逐漸被廣泛應用，然而中間層隔震之高模態參與比例較高，造成隔震層下部結構反應放大。而傳統調諧質量阻尼系統為一有效的振動能量吸收器，其基本原理為將調諧質量阻尼系統的自然頻率調整到接近主要系統的基本振動頻率，進而產生兩者之反相位共振以消散外力擾動能量。 自體調諧質量阻尼系統結合中間層隔震及調諧質量阻尼器之概念，在此系統中，將上部結構作為調諧質量，其勁度和阻尼則由控制層的支承墊和阻尼器提供，期望結合兩種系統之優點，同時有效降低控制層上下部結構之受震反應。 本研究以一三自由度模型模擬自體調諧質量阻尼系統，分別代表上部結構、控制層和下部結構，進行不同結構質量比下，其下部結構阻尼比對於動力反應最佳化系統參數之敏感度分析，並依此結果作為數值模型建立之參考依據。針對各數值模型，同時考量各樓層最大層間位移與最大加速度，決定最佳之結構質量比設計。 依據數值分析結果，本文規劃一振動台試驗，選定八層樓縮尺鋼構架，設計兩組不同結構質量比之試驗構架，考慮不同地震特性，試驗構架於單軸向地震力作用下之受震反應。由試驗結果有效掌握各組試驗構架之動態反應及各控制元件發揮之效果，配合模態參數識別的結果，重新修正原數值模型，探討BMD系統設計之可行性及有效性，並驗證數值模型建立之可靠度。最後，觀察於短、中、長週期下自體調諧質量阻尼系統與不同隔減震系統之受震反應，進一步瞭解自體調諧質量阻尼系統在結構週期變異下與不同隔減震系統之優劣。Isolation system have be applied on many buildings recently, especially the mid-story isolation system is generally applied because of its constructability. But the response of substructure may be enlarged due to the flexibility and the contribution of the higher modes. Besides, tuned mass damper (TMD) system has been recognized as an effective energy absorbing device to reduce the undesirable vibrations of the attached vibrating system subjected to harmonic excitations. Therefore, the concept of building mass damper (BMD) design is to combine the tuned mass damper system and mid-story isolated design to control the seismic response of both substructure and superstructure. In BMD design, the superstructure above the isolation layer can serve as a tuned absorber mass whose stiffness and damping are provided by the isolation system composed of elastomeric bearings and additional dampers, as the advantages of conventional tuned mass damper and mid-story isolation systems can be integrated. In this research, a simplified three-lumped-mass structural model, simulating superstructure, control layer and substructure, represents a building with the BMD system. The objective function for the BMD design is determined by the dynamic response control of both the substructure and superstructure. Considering appropriate system parameters such as mass ratio and damping ratios, the optimum parameters for the BMD system are derived. A series of numerical analysis are performed to determine the optimum mass ratio. Then by applying the shaking table test, some system identification methods were performed to acquire the modal information such as frequency, damping ratio and modal participation mass ratio of test specimens. Accordingly some numerical models with the test results can be established and the numerical analysis and experimental results can be compared. Based on the research results, the effectiveness of the optimum BMD design on seismic protection of buildings is verified. Finally, compare the pros and cons of the seismic response between BMD system and other designs in different structural periods

关于Ti-6Al-4V不合格废料电解分离一些问题的研究

一、前言 由于飞机制造、导弹技术、造船、化工机械和无线电技术等重要工业部门对金属钛及其合金的需求量日益增长,因此,钛和钛合金生产近年来发展很快。钛及其合金生产的迅速发展,尖锐地提出了如何回收钛和钛合金废料这一重要和复杂的问题。根据国外文献资料和国内有色金属加工生产情况的调查:在以工业规模生产钛和钛合金零件的过程中,其材料的利用率仅仅为15—20％,

Pelliot chinois 2661 (+ 3735)

Contient : Er ya 尒 雅 [avec commentaire de Guo Po 郭 璞] ; Texte pseudo-médical ; [Zhan ren shou yang mu run er ming deng fa 占 人 手 痒 目 潤 耳 鳴 等 法 ; Zhu za lüe de yao chao zi 諸 雜 略 得 要 抄 子Numérisation effectuée à partir d'un document original

电解精炼制取合格钛粉的研究

本文探讨了废钛熔盐电解精炼制取粉末冶金使用的合格钛粉的可能性及最佳工艺条件。研究结果表明,电解精炼方法制粉的难点在于钛粉含氧量随粒度减小而增高,致使大量细粉含氧量出格。细粉的含氧量与夹盐率及夹盐中可溶钛浓度有关。当可溶钛浓度约3％、夹盐率不超过60％时,-28目～+80目钛粉在粒度和含氧量方面都能满足粉末冶金的要求。通过正交实验找出了在该粒度范围内影响钛粉收得率的因素依次为熔盐种类、阴极电流密度、阳极电流密度和可溶钛浓度。文中对上述诸因素分别进行了讨论并确定了相应的最佳工艺条件。据此,在80A电解槽的扩大实验中,获得-28目～+80目粒度范围钛粉的收得率达到74％,质量超过一级海绵钛的水平。该研究结果提供了工业制取廉价合格钛粉的途径