関連する実験動画
Updated: Sep 9, 2025
08:35
Minimum Burning Pressures of Water-based Emulsion Explosives
Published on: October 31, 2017
8.5K
濡れ た ページ: 濡れ た 本 に 関する 予備書
Islam El Jaddaoui1,2,3, Kayo Denda4, Hassan Ghazal5,6,7
1Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, University Mohammed V, Rabat 10000, Morocco.
Biology
|September 4, 2025
まとめ
図書館で発生する真菌菌は 蔵書に害を及ぼし 健康を危険にさらします このガイドは 微生物学者たちが 菌類の存在を理解し 図書館の資料の汚染を防ぐのに役立ちます
科学分野:
- 菌類と図書館の保存
- 環境微生物学
- 公衆衛生と室内の空気の質
背景:
- 図書館の材料の真菌の成長 (カビ) は化学的,機械的,美学的な劣化を引き起こす.
- 菌類 の 発生 に 寄与 し て いる 原因 に は,図書館 の 整備 の 欠陥,気温 換気 装置 の 障害,水 の 漏れ,洪水 など が 挙げ られ ます.
- 空気中の真菌胞子の高濃度は,重度の呼吸器疾患やその他のヒトの健康への影響と関連しています.
研究 の 目的:
- ミクロバイオロジストにキノコの分類学,形態学,命名法に関する基礎知識を提供すること.
- 図書館のコレクションの菌類汚染の管理と緩和に 図書館員を支援します
- 気候変動によるキノコの生物分解と健康リスクの増大の脅威に対処する.
主な方法:
- 図書館環境に関連するキノコの特徴のレビュー
- 図書館でのカビの発生の原因と要因の分析
- 図書館コレクションの真菌汚染を最小限に抑えるためのガイドラインの作成
主要な成果:
- キノコは図書館の保存に重大な脅威をもたらします
- 空気中の真菌胞子はヒトの健康に悪影響を及ぼします.
- 気候変動は 図書館のカビの発生頻度と重症性を 悪化させています
結論:
- 効果的な図書館資料保存には 菌類の生物学を理解することが重要です
- 積極的な管理と予防戦略は 菌類の発生を抑えるために不可欠です
- 微生物学者と図書館員の協力は 収集物の保護と健全な環境の確保の鍵です
関連する概念動画
00:52Washing, Drying, and Ignition of Precipitates
1.1K
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
1.1K
01:26Curing Methods
121
Concrete members with a small surface-to-volume ratio are cured by oiling and moistening the forms before casting the concrete member. These forms can be left in place for a prolonged period to prevent moisture loss, and can be wetted if made of a material suitable for wetting. If the forms are removed early, the concrete member is moistened and covered with polythene sheets to maintain moisture. For large horizontal concrete surfaces exposed to dry weather, a temporary covering is suspended...
121
01:20Preparation of Samples for Electron Microscopy
5.8K
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
5.8K
02:57Southern Blot
20.2K
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
20.2K
01:22Imprinting
10.1K
Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting.
10.1K
01:21Drying Shrinkage
151
When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage.
A portion of this drying shrinkage can be reversed; if the concrete is...
A portion of this drying shrinkage can be reversed; if the concrete is...
151