Results 1 to 10 of about 5,468,610 (258)
Chemical Phenomena of Atomic Force Microscopy Scanning [PDF]
Analytical Chemistry, 2018 Atomic force microscopy is widely used for nanoscale characterization of materials by scientists worldwide. The long-held belief of ambient AFM is that the tip is generally chemically inert but can be functionalized with respect to the studied sample.
Anton V. Ievlev +8 more
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The Influence of Supersonic Waves on Chemical Phenomena. III
NIPPON KAGAKU KAISHI, 1934 (1) 化學現象に對する超音波の作用の原因につき論議を試みたり.(2) 超音波發生装置の出力及能率は共振時に於ける結晶の負荷を負荷とせる發振器の出力及能率なる事を指摘し強力にして大勢力なる超音波發生装置設計には發振器の出力増大となる問題よりも結晶の大きさ及び超音波發生時に於ける結晶内の發熱除去或は冷却方法等に關する問題が重要なるを暗示せり.(3) 異相系氣體發生反應に及ぼす影響を,亞鉛-鹽酸;亞鉛-硫酸;及び大理石-鹽酸の反應につき研究し,いづれも超音波の作用によりその速度に於て數倍さるる結果を得たり.(4) 超音波の作用により發生氣泡の瞬間的結合現象あるを示し之につき論議を試みたり.(5) 實驗結果につき考察を試み,發生氣泡による反應有効界面積の妨害に對する超音波の影響は重要なる要素にあらずして ...
Nobuo MORIGUCHI
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Physico-chemical phenomena in the deformation of metals [PDF]
Uspekhi Fizicheskih Nauk, 1958 V I Likhtman, Eugenii D Shchukin
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CHEMICAL PHENOMENA VERSUS CHEMICAL REACTIONS: DO STUDENTS MAKE THE CONNECTION?
Chem. Educ. Res. Pract., 2003 In this work, we examine whether tenth-grade high school students (N = 197, age 15- 16) as well as first-year university chemistry students (N = 77, age 18-19) can make the connection between chemical reactions and chemical phenomena. We used nineteen physical and chemical phenomena, and asked the students at one stage to distinguish physical from ...
Georgios Tsaparlis
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Thermodynamic experimental study of an Algerian condensate gas [PDF]
Acta Periodica Technologica, 2023 When a gas field is discovered, the gas condensate is often in a gaseous single-phase state in the reservoir under pressures and at temperatures which are higher the greater the depth.
Harche Rima +3 more
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Hydroxytyrosol Enrichment of Olive Leaf Extracts via Membrane Separation Processes
Membranes, 2022 Antioxidants isolated from plant materials, such as phenolics, have attracted a lot of attention because of their potential uses. This contributes to the idea of the biorefinery, which is a way to produce useful products from biomass waste. Olea europaea
Costas S. Papageorgiou +5 more
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Multimodal Technologies and Interaction, 2023 Chemical phenomena are only observable on a macroscopic level, whereas they are explained by entities on a non-visible level. Students often demonstrate limited ability to link these different levels.
Hendrik Peeters +2 more
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High-Yield Production of a Rich-in-Hydroxytyrosol Extract from Olive (Olea europaea) Leaves
Antioxidants, 2022 The aim of the present study was to explore the high-yield production of hydroxytyrosol, a phenolic compound with very high antioxidant capacity. Olea europaea leaves were chosen as feedstock as they contain significant amounts of oleuropein, which can ...
Costas S. Papageorgiou +5 more
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The Protection of Building Materials of Historical Monuments with Nanoparticle Suspensions
Heritage, 2021 Marble and limestone have been extensively used as building materials in historical monuments. Environmental, physical, chemical and biological factors contribute to stone deterioration.
Efstathia I. Pavlakou +6 more
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