Seismic effectiveness evaluation and optimized design of tie up method for securing museum collections

To quantify the seismic effectiveness of the most commonly used fishing line tie up method for securing museum collections and optimize fixed strategies for exhibitions,shaking table tests of the seismic systems used for typical museum collection replicas have been carried out.The influence of body shape and fixed measure parameters on the seismic responses of replicas and the interaction behavior between replicas and fixed measures have been explored.Based on the results,seismic effectiveness evaluation indexes of the tie up method are proposed.Reasonable suggestions for fixed strategies are given,which provide a basis for the exhibition of delicate museum collections considering the principle of minimizing seismic responses and intervention.The analysis results show that a larger ratio of height of mass center to bottom diameter led to more intense rocking responses.Increasing the initial pretension of fishing lines was conducive to reducing the seismic responses and stress variation of the lines.Through comprehensive consideration of the interaction forces and effective securement,it is recommended to apply 20%of breaking stress as the initial pretension.For specific museum collections that cannot be effectively protected by the independent tie up method,an optimized strategy of a combination of fishing lines and fasteners is recommended.

Painting of Rahula of The Qing Period ——Collections of Tibet Museum

Among the collections of the Tibet Museum is a cloth tangka painting produced in the 51st year of the reign of Qing Dynasty Emperor Qian-long. Measuring 82.5 cm long and 53.5 cm wide, it depicts Rahula. As one of the 10 major disciples of Sakyamuni and one of the 16 Arhats, Rahula was a son of Sakyamuni before he entered Buddhism. When Sakyamuni became a Buddha, Rahula was asked to take in charge of Buddhist affairs at Qinglanyuan.

Ancient Ink Stick Collection of the Palace Museum

The Palace Museum,built on the site of the Forbidden City in Beijing,has a collection of some 80,000 study objects,including writing brushes,ink sticks,ink slabs and paper.Many of them are high-quality ink sticks made during the Ming and Qing dynasties(1368-1911).These ink sticks are categorized into such types as imperial ink sticks(made by court workshops),

TIBETAN TREASURES COLLECTED BY THE PALACE MUSEUM(Ⅱ) ——6th Panchen Erdeni in Beijing

In the history of theQing Dynasty(1644-1911),two DalaiLamas and onePanchen Erdeni went toBeijing for an audiencewith the emperor.Theywere the 5th Dalai Lama,who went in 1652,he

Tibetan Treasures Collected By the Palace Museum(Ⅲ)——State Tutor Zhamgyia Norbi Dorje

Zhamgyia Hutog-to was the onlyState Tutor whoreceived thehonor from the Gingemperors.As one of thefour major Living Buddhasystems of the Yellow Sect,he was he most influentialLiving Buddha in the Mon-golian area.Of the six gen-erations,3rd Zhamgyia(1717-1786)was the mostfamous.

Jade Articles Collected in Tibetan Museum

Since the Yuan Dynasty, Tibet has been formally part of the territory of China. By keeping abreast with developments in the hinterland, Tibet has maintained close relations with other provinces in China and kept up to date. Mutual interactions were frequent i.e. Tibetans presented tributes to the central government and vice versa, the central governments bestowed largess on Tibetans. The largess included Buddhist statues, porcelains, silks, satins, and fabulous jade ornaments. In book entitled "Memoir of...

Little effect of climate change on body size of herbivorous beetles

Ongoing climate change affects various aspects of an animal＇s life, with impor- tant effects on distribution range and phenology. The relationship between global warming and body size changes in mammals and birds has been widely studied, with most find- ings indicating a decline in body size over time. Nevertheless, little data exist on similar size change patterns of invertebrates in general and insects in particular, and it is unclear whether insects should decrease in size or not with climate warming. We measured over 4000 beetle specimens, belonging to 29 beetle species in 8 families, collected in Israel during the last 100 years. The sampled species are all herbivorous. We examined whether beetle body size had changed over the years, while also investigating the relationships between body size and annual temperature, precipitation, net primary productivity （NPP） at the collection site and collection month. None of the environmental variables, including the collection year, was correlated with the size of most of the studied beetle species, while there were strong interactions of all variables with species. Our results, though mostly neg- ative, suggest that the effect of climate change on insect body size is species-specific and by no means a general macro-ecological rule. They also suggest that the intrapopulation variance in body size of insects collected as adults in the field is large enough to conceal intersite environmental effects on body size, such as the effect of temperature and NPE