Calcium oxide
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Sugarcane bagasse ash (SCBA) is an industrial waste that consists of silicon oxides, calcium, aluminum, iron, magnesium, and alkali metal oxides. The composition and structure of thermomechanical treated SCBA was analyzed by X-ray fluorescence (XRF), Scanning Electron Microscopy (SEM) and X-Ray diffraction (XRD). Thermomechanical treated SCBA was mixed with clay, quartz and feldspar at different compositions according to an appropriate mixing ratio and using this mixture for the production of dry pressed ceramic tiles.
6p dianmotminh02 03-05-2024 5 1 Download
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Part 2 book "Medical biochemistry" includes content: Biochemical endocrinology, cellular homeostasis, digestion and absorption of nutrients, glucose homeostasis and fuel metabolism, nutrients and diets, lipoprotein metabolism and atherogenesis, role of the liver in metabolism, water and electrolytes homeostasis, bone metabolism and calcium homeostasis, neurochemistry, blood and plasma proteins, hemostasis and thrombosis, oxidative stress and inflammation, the immune response,... and other contents.
297p muasambanhan02 18-12-2023 3 1 Download
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Worldwide petroleum reserves are decreasing rapidly; therefore, looking for sustainable and renewable energy is currently one of the targets of scientists. Biodiesel which can satisfy these requirements is synthesized by the transesterification of plant/animal oil with alcohols, typically methanol, catalyzed by acid or base.
7p vidoctorstrange 06-05-2023 5 3 Download
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Spent pickling liquor containing almost FeCl2 is a considered hazardous waste because of its very high level of acidity and high metal concentration, and the conventional neutralization method regenerates an excessive quantity of sludge that poses a serious problem concerning to the landfill disposal and risk of ground water contamination. Therefore, recovery of spent pickling liquor is necessary.
9p visnape 30-01-2023 5 2 Download
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One of the main trends in developing bio-based materials is to improve their mechanical and physical properties using MFC derived from sustainable natural sources and compatible low-cost chemicals. The strength of anionic MFC based materials can be increased with addition of multivalent cations.
5p vihermione 06-01-2023 6 2 Download
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Bài viết Tổng hợp wollastonite từ tro trấu Việt Nam bằng phương pháp thủy nhiệt tập trung khảo sát ảnh hưởng của nhiệt độ đến sự hình thành khoáng xonotlite dưới điều kiện phản ứng thủy nhiệt.
4p vilexus 30-09-2022 9 3 Download
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Hydrophilic nano MnO is shown to have significant stability in aqueous media for oxidation of styrene. Different catalysts have been used to synthesis styrene oxide, but MnO-CaL is considered the efficient and selective catalyst to produce styrene oxide. In general, this paper reported especial strategy for synthesis of novel nano MnO that stabilized with oleic acid in chloroform and changing nature of its stabilizer by exchanging oleic acid with lignosulfunate and displays its catalytic activity towards selective oxidation of styrene.
13p langthannam 29-12-2021 15 0 Download
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The waste cockle shell was prepared in nano size via ball mill technique which was run for 36 hours at 350 rpm speed and then calcined at 900 °C for 2 hours to decompose calcium carbonate, CaCO₃ into nano calcium oxide, n-CaO.
4p mudbound 10-12-2021 5 1 Download
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Reusability of two heterogeneous catalysts in ultrasound (US) assisted biodiesel production was investigated in comparison to each other. An ultrasound (US) generator (200 W, 20 kHz) equipped with a horn type probe (19 mm) was used. Regeneration experiments were planned according to second order central composite design (CCD) method. After the eighth use of the catalysts, biodiesel yield decreased from 99.1% to 90.4% for calcined calcite (CaO) and from 98.8% to 89.8% for calcined dolomite (CaO.MgO).
6p tudichquannguyet 29-11-2021 8 1 Download
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A Convenient and green synthesis of 4H-pyran derivatives via one-pot multicomponent reaction of aromatic aldehydes, malononitrile and ethyl acetoacetate using KOH loaded CaO as a catalyst under solvent free condition is reported. The morphology of the catalyst has been characterized by XRD and TEM.
12p tocectocec 25-05-2020 16 0 Download
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The calcium looping process, based on the reversible reaction between CaCO3 and CaO, is recently attracting a great deal of interest as a promising thermochemical energy storage system to be integrated in Concentrated Solar Power plants (CaL-CSP). The main drawbacks of the system are the incomplete conversion of CaO and its sintering-induced deactivation. In this work, the influence of particle size in these deactivation mechanisms has been assessed by performing experimental multicycle tests using standard limestone particles of well-defined and narrow particle size distributions.
10p partimesinhvien 08-05-2020 17 1 Download
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We previously reported the involvement of nitric oxide (NO) and cyclic nucleotide-gated ion channel 6 (CNGC6) in the responses of plants to heat shock (HS) exposure.
13p viharuno2711 21-04-2020 12 0 Download
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Different composition of composite material of zirconium dioxide co-doped with magnesium oxide [MgO (x)] and calcium oxide [CaO(y)] according to the general molecular formula {1 (x + y)}ZrO2-(x)MgO-(y) CaO were prepared by co-precipitation method and characterized by different techniques, such as XRD, FTIR, TG-DTA, and SEM. Co-doping was conducted to enhance the ionic conductivity, as mixed system show higher conductivity than the single doped one.
7p trinhthamhodang1 14-11-2019 11 2 Download
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This paper reports on the synthesis and characterisation of Dy2 O3 -doped magnesium borate (MB) glasses containing different modifiers, lithium, calcium, and sodium oxides. Glasses composed of (70-z)B2 O3 -20Li2 O; CaO; Na2 O-10MgO-zDy2 O3 (where 0.05≤z≤0.7 mol%) were prepared using the melt-quenching method. X-ray diffraction (XRD) pattern of the as-quenched samples verified their amorphous character. Differential thermal analysis (DTA) confirmed excellent glass-forming ability and thermal stability in the range of 0.60-0.67 and 0.18- 0.82, respectively.
6p caygaocaolon1 13-11-2019 20 1 Download
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The influence of polymer-modified mortar with fly ash was researched, when lignin cellulose and calcium sulphoaluminate expansive agent was added into mortar. The consistency, mechanical properties and shrinkage performance of mortar were studied by orthogonal experiment. Lignin cellulose was wrapped by the hydration products of binding materials. As the expansive agent and fly ash increasing, the consistency of mortar can be improved.
5p christian2605 11-10-2019 23 1 Download
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Calcium ion (Ca2+) accumulation and excessive oxidative stress in the hippocampus and brain cortex have long been known as major contributors to the etiology of epilepsy.
9p sony2711 28-01-2019 20 1 Download
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Mitochondrial diseases are a heterogeneous group of disorders that are currently the focus of intense research. The many cell functions performed by mitochondria include ATP production, calcium homeostasis, and apoptosis.
16p sony2711 28-01-2019 16 2 Download
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Nghiên cứu thử nghiệm cấy ghép vật liệu hydrogel composite sinh học trên cơ sở biphasic calcium phosphate (BCP)-oxidized alginate, gelatin được tiến hành trên thỏ. Đánh giá sự phát triển của xương sau khi cấy ghép vật liệu composite vào xương đùi thỏ dựa trên kết quả phân tích phương pháp vi mô chụp cắt lớp về tỷ lệ thể tích xương/thể tích mô, diện tích xương bề mặt/thể tích xương và kết quả phân tích mô học.
8p quaymax4 05-09-2018 40 1 Download
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In this study, the oxide layer on 6061 Al alloy was produced in a free-alkali ion electrolyte containing calcium phosphate and ammonia water by PEO method. Microstructure, micro-hardness and corrosion resistance of PEO coated were investigated and discussed. Surface morphology analysis indicated the coating characterized by micro-pores, pan-cakes like, and micro-crakes with pore size and percentage of pores on coating surface are smaller than 1 μm and 2.5 %, respectively.
8p cumeo3000 01-08-2018 26 0 Download
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In this study, we isolated a 25-kDa novel snake venom protein, designated ablomin, from the venom of the Japanese Mamushi snake (Agkistrodon blomhoffi). The amino-acid sequence of this protein was determined by peptide sequencing and cDNA cloning. The deduced sequence showed high similarity to helothermine from the Mexican beaded lizard (Heloderma horridum horridum), which blocks voltage-gated calcium and potassium channels, and ryanodine receptors. Ablomin blocked contraction of rat tail arterial smooth muscle elicited by high K+-induced depolarization in the 0.
8p system191 01-06-2013 25 2 Download