Báo cáo vật lý: "Resveratrol Derivatives from Stem Bark of Hopea and Their Biological Activity Test" docx

báo cáo Vật lý

... lượng sinh vật khô và năng lượng sinh vật ướt tùy theo độ ẩm của nguyên liệu gốc. Ngoài ra chúng ta còn có một phương pháp nữa là sản xuất nhiên liệu sinh vật. * Năng lượng sinh vật khôĐốt ... này xét dạng năng lượng mà một vật có được đo nó đang chuyển động. Dạng năng lượng ấy gọi là động năng.Khi một vật có động năng thì vật đó có thể tác dụng lực lên vật khác và lực này sinh công. ... tắt là nhiệt) (32.1)là độ biến thiên nội năng của vật trong quá trình truyền nhiệt: là nhiệt lượng vật nhận được từ vật khác hay toả ra cho vật khác.Ở lớp 8 ta đã học công thức tính nhiệt lượng...

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Báo cáo vật lý: "Analysis of Trace Elements in Teeth by ICP-MS: Implications for Caries" pptx

... Trace Elements in Teeth: Implication for Caries 2 teeth has been suggested as being indicative of Pb toxicity.5,9 Here, we have investigated the importance of the location of trace elements ... carious teeth than in those with healthy teeth. Keywords: ICP-MS, teeth, trace elements, caries, teeth pulps 1. INTRODUCTION Biomonitoring of trace elements in human teeth has become ... elements in the teeth have been previously demonstrated.1 Trace elements can be ingested by humans via different routes, including ingestion in the food and water or by deliberate consumption of...

Báo cáo vật lý: "Influence of the Silica-to-Surfactant Ratio and the pH of Synthesis on the Characteristics of Mesoporous SBA-15" ppt

... available in the literature.10,11 It is reported that the ratio of the silica source to the surfactant ratio and the pH of the synthesis gel can greatly influence the characteristics of the resulting ... amounts of C1– ions. Therefore, for the partial dehydration of PEO units, the volume of the hydrophilic part of the micelle decreases. This leads to an increase in the hydrophobic region or ... materials as they generally control the formation of micelles during the synthesis. 8 Hence, many aspects of the synthesis processes are involved in developing these porous materials, and they still...

Báo cáo vật lý: "Decolourisation of Reactive Orange 16 by Activated Carbon and Copper Oxide Catalysts Supported by Activated Carbon" ppsx

... structure of RO16 dye. Journal of Physical Science, Vol. 21(2), 29–40, 2010 29 Decolourisation of Reactive Orange 16 by Activated Carbon and Copper Oxide Catalysts Supported by Activated ... Decolourisation of Reactive Orange 16 (RO16) dye by HNO3-modified activated carbons (ACs) and a copper oxide catalyst supported by modified AC (Cu-Ac) were investigated. The percentage of colour ... the effect of HNO3-modified AC and its corresponding Cu -supported catalyst on the decolourisation of Reactive Orange 16 (RO16) dye. The chemical structure of RO16 dye is shown in Figure 1. ...

Báo cáo vật lý: "Flexural and Morphological Properties of Epoxy/Glass Fibre/SilaneTreated Organo-montmorillonite Composites Nor Hamidah Mohd" potx

... mechanical properties and fracture behaviour of nanocomposites and carbon fibre composites (CFRPs) that contained organoclay in the E matrix. Bozkurt et al.4 reported that the flexural properties of ... morphological properties of epoxy/glass fiber composites. Polym. Int., 56(4), 512–517. 8. Chow, W. S. (2007). Water absorption of epoxy/glass fiber/organo-montmorillonite nanocomposites. eXPRESS ... tensile strength Epoxy/Glass Fibre/Silane-Treated Organo-montmorillonite 46 3.2 Flexural Properties The effects of silane-treated OMMT loading on the flexural modulus of E/GF composites are...

Báo cáo vật lý: "Performance of Carbide Cutting Tool when Machining Cast Iron FC 250 in Dry Condition and Using Cutting Fluid" ppt

... Pemotong (Performance of Carbide Cutting Tool when Machining Cast Iron FC 250 in Dry Condition and Using Cutting Fluid) Jaharah A. Ghani*, Mohd Noor Azmi Mohd Rodzi, Noordin Ibrahim dan Che ... above. In dry machining, wear mechanisms were caused by adhesion and micro-attrition at low combination of machining parameters. While at high combination of machining parameters, the cutting ... cast iron FC 250 in dry conditions and when using the cutting fluid has been carried out with emphasis on mechanisms of wear experienced by the cutting edge. In addition, the effects of other...

Báo cáo vật lý: "PYROLYSIS LIQUID DERIVED FROM OIL PALM EMPTY FRUIT BUNCHES" pptx

... Pyrolysis Liquid Derived from Oil Palm EFB 120 2. MATERIALS AND METHODS 2.1 Feedstock Preparation EFB used in the experiments were supplied by Malaysian Palm Oil Board. Samples ... bio -oil. Journal of Physical Science, Vol. 17(2),117–129, 2006 117 PYROLYSIS LIQUID DERIVED FROM OIL PALM EMPTY FRUIT BUNCHES N. Abdullah1*, and A.V. Bridgwater2 1School of Physics, ... breakdown of products and wastes Pyrolysis Liquid Derived from Oil Palm EFB 128 6. ACKNOWLEDGEMENT I would like to thank the Malaysian Palm Oil Board (MPOB) who kindly supplied me the...

Báo cáo vật lý: "BIO-OIL FROM FAST PYROLYSIS OF OIL PALM EMPTY FRUIT BUNCHES" ppt

... function of temperature for washed feedstock of ash content 1.03 mf wt% Bio -Oil from Fast Pyrolysis of Oil Palm Empty Fruit Bunches 72 Table 6: Characteristics of pyrolysis oil compared ... feedstocks gave higher yields of organics at the expense of char and gas. Bio -Oil from Fast Pyrolysis of Oil Palm Empty Fruit Bunches 62 4. EXPERIMENTAL PLAN A series of unwashed and washed feedstocks ... experiment was carried out using 1 kg/h rig. Bio -Oil from Fast Pyrolysis of Oil Palm Empty Fruit Bunches 58 The fast pyrolysis process is perceived to offer logistical and hence economic advantages...

Báo cáo vật lý: "Immobilization of Dithizone onto Chitin Isolated from Prawn Seawater Shells (P. merguensis) and its Preliminary Study for the Adsorption of Cd(II) Ion" pdf

... onto the surface of chitin, the intensity of dithizone bands is considerably low as compared to those of chitin. The XRD also suggests that immobilization of dithizone onto the surface of chitin ... The Effect of adsorbent mass on the adsorption of Cd(II) ion byithizone-immobilized chitin. g 10 àg/ml of Cd(II) ion oaused, resulting in the adsorption of Cd(II) ions on chitin -dithizone ... to those of unmodified chitin. This may be due to the addition of the various types of active sites (N, –NH and –SH) obtained from the immobilization of dithizone onto the surface of chitin which...

Báo cáo vật lý: "Preliminary Studies for Production of Fatty Acids from Hydrolysis of Cooking Palm Oil Using C. rugosa Lipase" pot

... 79 Preliminary Studies for Production of Fatty Acids from Hydrolysis of Cooking Palm Oil Using C. rugosa Lipase N.A. Serri, A.H. Kamarudin*, S.N. Abdul Rahaman School Of Chemical Engineering, ... conversion of fatty acid.8 The optimum oil loading is 0.1 g/ml iso-octane. 3.4 Effect of Temperature The conversion of fatty acids produced from the hydrolysis of palm oil using C. rugosa ... DISCUSSION 3.1 Typical Hydrolysis Profile Figure 1 shows a typical hydrolysis profile of palm oil at temperature of 45ºC for an initial palm oil concentration of 0.1 g palm oil/ ml iso-octane at...

Báo cáo vật lý: "Resveratrol Derivatives from Stem Bark of Hopea and Their Biological Activity Test" docx

... Journal of Physical Science, Vol. 19(2), 7–21, 2008 7 Resveratrol Derivatives from Stem Bark of Hopea and Their Biological Activity Test Sri Atun1*, Nurfina ... that resveratrol derivatives isolated from the stem bark of Hopea consist of dimer, trimer and tetramer resveratrol. Some compounds have biological activity as antioxidant and cytotoxic effect ... investigation of seven resveratrol derivatives from the stem bark of these species. The structures of these compounds were derived based on the analysis of the UV, IR, MS and NMR, including 1D and 2D...

Báo cáo vật lý: "Synthesis of Hydroxyl Radical Scavengers from Benzalacetone and its Derivatives" pot

... Antioxidant activity of benzalacetone and its derivatives. Synthesis of Hydroxyl Radical Scavengers 66 Figure 3: Antioxidant activity of dibenzalacetone and its derivatives. From the graphs ... 0 Journal of Physical Science, Vol. 19(2), 61–68, 2008 61 Synthesis of Hydroxyl Radical Scavengers from Benzalacetone and its Derivatives Sri Handayani* and Indyah Sulistyo ... Synthesis of hydroxyl radical scavengers from benzalacetone and its derivatives has been done. Benzalacetone synthesis was done by crossed aldol condensation between benzaldehyde and acetone...

Báo cáo vật lý: "Textural Characteristics of Activated Carbons Prepared from Oil Palm Shells Activated with ZnCl2 and Pyrolysis Under Nitrogen and Carbon Dioxide" doc

... Journal of Physical Science, Vol. 19(2), 93–104, 2008 93 Textural Characteristics of Activated Carbons Prepared from Oil Palm Shells Activated with ZnCl2 and Pyrolysis Under Nitrogen and Carbon ... textural characteristics of activated carbon prepared from oil palm shells activated with zinc chloride (ZnCl2) and pyrolysis under nitrogen and carbon dioxide were studied in this paper. The pyrolysis ... prepare and study the effect of different pyrolysis temperatures on the development of the porosity of activated carbon derived from oil palm shells activated with ZnCl2. The activated carbon...

Báo cáo vật lý: "SCREEN-PRINTED POTASSIUM ION SENSOR FABRICATED FROM PHOTOCURABLE AND SELFPLASTICIZED ACRYLIC FILM" docx

... 141SCREEN-PRINTED POTASSIUM ION SENSOR FABRICATED FROM PHOTOCURABLE AND SELF-PLASTICIZED ACRYLIC FILM Sagir Alva, Lee Yook Heng* and Musa Ahmad School of Chemical Sciences and Food Technology, ... photopolymerization 1. INTRODUCTION Potassium ion sensors have many biomedical applications. They are used in the analysis of blood, and urine potassium and cardiovascular research and monitoring. ... Valinomycin ionophore in the membrane can selectively form a complex potassium ion from the solution [18,19]. The complexation process from the membrane-solution interface allows transfer of the potassium...

Báo cáo y học: "Baseline values from the electrocardiograms of children and adolescents with ADHD" docx

... purposes)Child and Adolescent Psychiatry and Mental HealthOpen AccessResearchBaseline values from the electrocardiograms of children and adolescents with ADHDSuyash Prasad*1,2, Amanda J Furr3,4, ... het-erogeneity that may exist in physiology across ethnicgroups [16].There are a number of strengths and limitations of the meta-analysis. The considerable size and heterogeneity of the sample ... drawnalong the downslopes of the T wave and the isoelectricline. U waves were ignored, but if a U wave or abnormal Twave obscured the offset of the T wave, then the offset of the QT interval...

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