Cabinet
发表于 2025-3-23 09:42:13
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grotto
发表于 2025-3-23 15:59:43
,Ästhetische (Chemie-)Produkte,he composition and behaviour of materials at an increasingly fundamental level. The optical microscope is one of the earliest instruments to give information beyond that gathered by the unaided eye. Electron microscopes do so at much higher magnification.
配置
发表于 2025-3-23 19:04:02
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atopic
发表于 2025-3-23 23:42:02
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溺爱
发表于 2025-3-24 04:04:47
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Sad570
发表于 2025-3-24 09:01:19
Paintings on Canvas, of the greatest of mistaken endeavours have arisen in this area — for example, by the application of too rigorous and sometimes inadequate cleaning regimens, combined with unsuitable methods of support for the canvas and the use of unsatisfactory varnishes.
盲信者
发表于 2025-3-24 12:01:58
Instrumental Methods for Conservation Problems,he composition and behaviour of materials at an increasingly fundamental level. The optical microscope is one of the earliest instruments to give information beyond that gathered by the unaided eye. Electron microscopes do so at much higher magnification.
myopia
发表于 2025-3-24 15:10:18
Textbook 1990Latest edition. Increasing interest is being taken in the scientific investigation of causes and remedies for these phenomena. Each chapter in this volume deals with one such artefact and illustrates the origin of deterioration, restoration techniques and subsequent preservation. The final chapter looks at recent developments in preservation techniques.
acclimate
发表于 2025-3-24 21:16:19
The Conservation of Documents,re the present. In Egypt papyrus was widely used from about 3000 . until about the ninth century ., when paper was introduced. Other materials used at different times and in different places include leather, parchment and vellum (all from animal skins), silk, ivory, bone, wood and metals. Most produ
Legend
发表于 2025-3-24 23:33:12
Conserving Stone,ue, silicon, fulfil a special role in most of the rocks and minerals which form the durable crust of the earth. Indeed, silicon is the second most abundant element (after oxygen) by mass in that crust, most of which is formed of silicates.