Báo cáo vật lý: "The Hidden Property of Arrhenius-type Relationship: Viscosity as a Function of Temperature" doc

... persamaan untuk menggantikan hubungan jenis Arrhenius telah diterbitkan. Ini adalah kerana pemalar tenaga keaktifan daripada persamaan itu bukan dalam bentuk asas. Persamaan baru ini mengekalkan ... sifat asal tenaga keaktifan dan kelikatan pada suhu tidak terhingga, dan ia merangkumi pemalar baru, iaitu kelikatan pada suhu sifar. Nisbah kelikatan pada suhu sifar dan kelikatan pada suhu ... tidak terhingga merupakan nilai asas untuk pemalar tenaga keaktifan. Model ini telah diuji dengan enam minyak sayur-sayuran dan kejituannya terbukti (R kuasa dua, 0.999). Kestabilan kelikatan...

Báo cáo vật lý: "The Kinetics and Mechanism of the Core-shell Styrene-butyl Acrylate Polymerisation" pdf

... sulfate radicals in this initiation step is really fast, such that the rate of radical formation is the same as the rate of chain initiation. As a result, the equation of initiation rate becomes: ... concentration of propagated radicals. Therefore, if the total concentration of the radicals is assumed to be in a steady state, the initiation rate of propagation for radicals is equal to the ... cationic surfactant and the high rate of radical formation of cationic initiators. The polymerisation rate increases with increasing surfactant and initiator concentrations, both in the anionic...

Báo cáo vật lý: "The Potentiometric Analysis of Chloride Ion Using Modified Heterogeneous Chitosan Membranes" pdf

... optimum masing-masing bagi kitosan–Cl– dan kitosan–Fe3+ ialah 6.5 ± 1.0 dan 5.0 ± 1.0. Tiada perubahan yang signifikan dalam prestasi selama 60 hari bagi kitosan–Cl– dan 42 hari bagi kitosan–Fe3+. ... chitosan–Cl–, chitosan–Fe3+ Abstrak: Kepilihan ion klorida secara potensiometri suatu membran polimer berasaskan PVC dan kitosan sebagai bahan aktif telah dikaji. Dua larutan celupan dipilih, ... Chitosan Membranes Munaratul Aini Yahaya and Sulaiman Ab Ghani* School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia *Corresponding author: sag@usm.my...

Báo cáo vật lý: "The Effect of Triethylene Diamine on the Properties of Waste Paper Foam Composites" ppsx

... effect of TEDA as a catalyst and waste paper filler content on the mechanical properties of waste paper foams has been investigated. The results indicate that increasing the waste paper filler ... plot clearly indicates that the elastic modulus of all of the PS waste paper foam increased with increasing waste paper content. This is because the addition of waste paper, which contains both ... TEDA catalyst are stiffer compared to those produced without the catalyst. Table 6: Elastic modulus of waste paper foam produced with and without the TEDA catalyst. Elastic Modulus (KPa)...

Báo cáo vật lý: "The Removal of Basic and Reactive Dyes Using Quartenised Sugar Cane Bagasse" potx

... Hchloe_sy@hotmail.comH, Hyptan@fsas.upm.edu.myH, ongst@mail.utar.edu.my Abstract: Sugar cane bagasse, an agricultural by-product, acts as an effective sorbent for the removal of both basic and reactive ... collected sugar cane bagasse was washed several times to remove dust. It was then boiled in water for one hour to remove the sugar residue in the bagasse. It was washed again with tap water and subsequently ... equilibrium was attained at 120 min, independent of the initial dye concentration. The initial rapid phase may also be due to the increased number of vacant sites available at the initial stage. Consequently...

Báo cáo vật lý: "THE EFFECT OF ADDITIVES ON THE SIZE OF Fe3O4 PARTICLES" ppt

... the nature of additives that may be surfactants, chitosan or inorganic ligands. Surfactants afford the smallest size as well as narrow size distribution of magnetite particles as indicated ... which acts as a barrier to prevent the agglomeration of particles [23]. Chitosan, a natural polymer contains hydroxyl and amino groups that may serve as cationic or anionic sites. Complexation ... that the additives – surfactants, chitosan and inorganic ligands have different manipulating ability. Surfactants gave better manipulation on particle size (ca. < 45 nm) as well as the size...

Báo cáo vật lý: "THE COVARIABILITY BETWEEN ANOMALOUS NORTHEAST MONSOON RAINFALL IN MALAYSIA AND SEA SURFACE TEMPERATURE IN INDIAN-PACIFIC SECTOR: A SINGULAR VALUE DECOMPOSITION ANALYSIS APPROACH" pdf

... analyze the covariability between anomalous northeast monsoon (NEM) rainfall in Malaysia and the large-scale anomalous sea surface temperature (SST) in Indian Ocean, Pacific Ocean and seas surrounding ... the anomalous NEM rainfall and the SST reveals the covariability between anomalous NEM rainfall in East Malaysia and anomalous SST associated with the BO-type of ENSO. The atmosphere-ocean ... Mechanism of Malaysian rainfall anomalies. Journal of Climate, 17(18), 3615–3621. 9. Juneng, L. & Tangang, F.T. (2005). Evolution of ENSO-related rainfall anomalies in Southeast Asia region...

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

... acrylate) (PBA) was proven as a useful membrane material for ion sensor. The main advantages of PBA are its good adhesion, photocurable and self-plasticizing properties because the glass transition ... sensors fabricated based on photocured self-plasticizing membrane and SPE towards change of potassium ion concentrations Table 1: The analytical performance of the potassium ion sensor based ... Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia *Corresponding author: yhl1000@pkrisc.cc.ukm.my Abstract: Potassium ion sensor based on photocured poly(n-butyl acrylate)...

báo cáo hóa học:" The least core in fixed-income taxation models: a brief mathematical inspection" doc

... the least core isactually not (for example the quadratic taxation case, or the piecewise linear taxation case). Once thenon-emptiness of least core is established, only then the analysis of its ... proposition has as direct corollary the fact that for quadratic taxations our analyzed setup has a non-empty least core.Proposition 2. Let QT (F, R) = QT be the set of quadratic tax functions defined ... Filip∗1,21Department of Statistics, Forecasting and Mathematics,Faculty of Economics and Business Administration,University Babe¸s Bolyai, 400591 Cluj-Napoca, Romania2Laboratoire d’Economie d’Orléans,Faculté...

Báo cáo toán học: "The spectral excess theorem for distance-regular graphs: a global (over)view" docx

... give a streamlined, accessible, and self-contained proof as far as possible. We alsoremark that by their local approach, Fiol et al. manage to prove more results.We assume the reader has basic ... distance-regular if each vertex has at least one vertex at distance d and its distance-dadjacency matrix A dis a polynomial of degree d in the adjacency matrix A. This result ishalfway towards the ... translate the deﬁnition of distance-regularity into a more algebraic one,we deﬁne the distance-i adjacency matrix A i as the adjacency matrix of Γi. Thus (A i)xyequals one if x and y are...

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