Synthesis and characteristics of carbon nanotube using plasma arc discharge

Carbon nanoparticles (CNP) were synthesized in arc plasma discharge using a simple, low-cost and toxic-free precursor gas. The structural and electrical characteristics were examined. SEM image showed existence of a high density and uniform nanostructures within the cylindrical bulk CNP tube. The tube diameter and its length was 28.5 μm and 316.7 μm, respectively. The average diameter of the nanoparticles grown in the tube was 600 nm. The electrical characteristics revealed low resistance with R = 7.23 kΩ with Cu electrodes. In addition, the device exhibited a high conductivity of 3.6 x 107 Scm-1. These results indicate the potential of CNP material for power device applications

Jawatankuasa USMFIT Perpustakaan

Penubuhan Jawatankuasa USMFIT Perpustakaan merupakan hasil cetusan idea daripada mantan Ketua Pustakawan Allahyarham YM Engku Razifah Engku Chik bagi menyahut seruan Naib Canselor Universiti Sains Malaysia untuk menjadikan warga USM sihat, cergas dan mencapai berat badan unggul. Justeru itu, Jawatankuasa ini ditubuhkan pada 1 Mac 2018 untuk merancang serta melaksanakan aktiviti sepanjang tahun. Program yang dirangka oleh Jawatankuasa ini adalah bertujuan untuk memberi kesedaran tentang amalan pemakanan sihat serta penglibatan aktiviti fizikal di kalangan warga Perpustakaan bagi mengurangkan risiko penyakit tidak berjangkit seperti diabetis, tekanan darah tinggi dan obesiti

Sejarah dan rekabentuk masjid warisan Kampung Parit Melana di Alor Gajah, Melaka

Diketahui umum bahawa masjid adalah sebuah binaan sturktur yang dibina oleh penganut agama Islam yang berfungsi menyediakan ruang untuk melakukan solat serta aktiviti-aktiviti lain yang berhubungkait dengan kepentingan Islam. Reka bentuk masjid perlulah memenuhi tujuan asal pembinaannya, sementara faktor-faktor lain seperti keadaan setempat juga memberi pengaruh terhadap seni bina masjid tersebut. Objektif kajian Masjid Warisan Kampung Parit Melana adalah untuk mengenalpasti asal usul dan senibina identiti setempat. Kajian di peringkat awalan ini memberi fokus dari segi sejarah, senibina dan kaedah pembinaan masjid lama ini. Hasil kajian menyimpulkan bahawa seni bina masjid merupakan antara seni bina yang memainkan peranan penting dalam pencarian identiti senibina kebangsaan, di samping ia kekal menjadi tumpuan kepada komuniti sebagai pusat ibadah dan pelbagai aktiviti. Oleh itu, masjid warisan seperti Masjid Warisan Kampung Parit Melana perlu dikekalkan untuk rujukan penting bagi generasi akan datang

Ethyl 4-anilino-3-nitro­benzoate

In the title compound, C15H14N2O4, the dihedral angle between the benzene and phenyl rings is 73.20 (6)°. An intra­molecular N—H⋯O hydrogen bond forms an S(6) ring motif. In the crystal, mol­ecules are linked by N—H⋯O and C—H⋯O hydrogen bonds into a layer parallel to the bc plane

3D simulation investigating ZnO NWFET characteristics

3D Simulation was carried out and compared with fabricated ZnO NWFET. The device had the following electrical output characteristics: mobility value of 10.0 cm2 /Vs at a drain voltage of 1.0 V, threshold voltage of 24 V, and subthreshold slope (SS) of 1500 mV/decade. The simulation showed that the device output results are influenced by two main issues: (i) contact resistance (Rcon ≈ 11.3 MΩ) and (ii) interface state trapped charge number density (QIT = 3.79 x 1015 cm-2). The QIT was derived from the Gaussian distribution that depends on two parameters added together. These parameters are: an acceptor-like exponential band tail function gGA(E) and an acceptor-like Gaussian deep state function gTA(E). By de-embedding the contact resistance, the simulation is able to improve the device by producing excellent field effect mobility of 126.9 cm2 /Vs

Macroeconomic Variables Influence on Stock Market Performance

Investors should consider stock market performance when making an investment decision. Both economic and non-economic factors influence the stock market's performance. Previous research, primarily from developed markets, has revealed that macroeconomic factors significantly impact stock returns. Economic forces are used in this paper to investigate the significant relationship between selected macroeconomic variables, the Malaysian stock return index for the financial sector, and the Bursa Malaysia Finance Services Index. The macroeconomic variables examined are inflation (INF), money supply (M.S.) and the real effective exchange rate (REER). This study's sample consists of 164 time-series observations. The observations are annual secondary data obtained from the World Bank, Index Mundi, and the Malaysian Bureau of Statistics from January 1979 to December 2019. Several regression analyses and econometric tests were performed with the interactive software package E-Views 11. The findings of this research paper provide an initial overview and can serve as a valuable foundation for investors' and policymakers' respective investment strategies and policies

Effect of chemical treatment on the tensile properties of single oil palm empty fruit bunch (OPEFB) fibre

A study on effect of chemical treatment on the tensile modulus and strength of single oil palm empty fruit bunch (OPEFB) fibre is presented in this paper. The fibres were treated with alkaline treatment using sodium hydroxide of 5% concentration. Tensile test were conducted in accordance to the ASTM C1557. Results revealed that the tensile modulus of the treated fibres decreases by around 55% as compared to the untreated fibres. Tensile strength on the other hand increases by around 25% with the alkaline treatment. The tensile strength was found to be dependent on the fibre diameter where the strength decreases with the increases in fiber diameter at fracture. SEM revealed higher porosity at larger fibre diameter which contributed to the degradation of the fibre tensile strength. No significant impact by the alkaline treatment was observed to the tensile strain of the fibre

Ethyl 1-phenyl-2-[4-(trifluoro­meth­yl)phen­yl]-1H-benzimidazole-5-carboxyl­ate

The asymmetric unit of the title compound, C23H17F3N2O2, contains two mol­ecules. In one of the mol­ecules, the phenyl and triflouromethyl-substituted benzene rings form dihedral angles of 52.05 (8) and 33.70 (8)°, respectively, with the benzimidazole ring system, while the dihedral angle between them is 58.24 (10)°. The corresponding values in the other mol­ecule are 58.40 (8), 25.90 (8) and 60.83 (10)°, respectively. In the crystal, mol­ecules are linked into chains along [100] by C—H⋯O and C—H⋯N hydrogen bonds. Aromatic π–π stacking inter­actions [centroid–centroid distance = 3.6700 (12) Å] also occur

7′-(2,5-Dimeth­oxy­phen­yl)-1′,3′,5′,6′,7′,7a’-hexa­hydro­dispiro­[indan-2,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,2′′-indan]-1,3,1′′-trione

In the title compound, C30H25NO5S, all the five-membered rings are in envelope conformations with the spiro and methylene C atoms as the flap atoms. Intra­molecular C—H⋯O inter­actions stabilize the mol­ecular structure and form S(6) and S(7) ring motifs. The mean plane through the hexa­hydro­pyrrolo­[1,2-c]thia­zole ring [r.m.s deviation of 0.0393 (1) Å] makes dihedral angles of 60.92 (5), 88.33 (4) and 84.12 (4)° with the terminal benzene ring and the mean planes of the mono and di-oxo substituted indan rings, respectively. Mol­ecules are linked by inter­molecular C—H⋯O inter­actions into a three-dimensional network. In addition, C—H⋯π and π–π inter­actions [centroid-to-centroid distance = 3.4084 (8) Å] further stabilize the crystal structure