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Search Results: 1 - 10 of 3776 matches for " Erum Akbar Hussain "
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N-Benzyl-N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]propanamine (N-benzylflouoxetine)
Nosheen Kanwal,Erum Akbar Hussain,Onur Sahin
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810012699
Abstract: In the title compound, C24H24F3NO, the N-benzyl derivative of fluoxetine {N-methyl-3-[4-(trifluoromethyl)phenoxy]benzenepropanamine}, the three aromatic rings A, B and C are inclined to one another by 76.77 (12)° for A/B, 17.05 (14)° for A/C and 89.66 (14)° for B/C. In the crystal structure, molecules are linked via C—H...π interactions to form one-dimensional chains propagating in the [010] direction.
2-{1-[(2-Nitrobenzenesulfonamido)methyl]cyclohexyl}acetic acid
Nosheen Kanwal,Erum Akbar Hussain,Onur Şahin,Orhan Büyükgüngör
Acta Crystallographica Section E , 2012, DOI: 10.1107/s160053681105224x
Abstract: In the title compound, C15H20N2O6S, the C—SO2—NH—C torsion angle is 64.54 (14)°. In the molecule, there is a bifurcated N—H...(O,O) hydrogen bond, forming S(7) rings. In the crystal, inversion dimers are formed via O—H...O hydrogen bonds involving the carboxyl group, so forming R22(8) rings. These dimers are further linked via pairs of C—H...O hydrogen bonds, forming a C(6) chain propagating along the c-axis direction.
Synthesis, Antibacterial, and Antifungal Activities of Novel Pyridazino Carbazoles
Ghazala Yaqub,Abdul Hannan,Erum Akbar,Muhammad Usman
Journal of Chemistry , 2013, DOI: 10.1155/2013/818739
Abstract:
Identifying Leader or Follower using a Binary Approach
D. M. Akbar Hussain
Lecture Notes in Engineering and Computer Science , 2010,
Abstract:
Predicting Hierarchical Structure in Small World Social Networks
D. M. Akbar Hussain
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Destabilization of Terrorist Networks through Argument Driven Hypothesis Model
Dil Muhammad Akbar Hussain
Journal of Software , 2007, DOI: 10.4304/jsw.2.6.22-29
Abstract: Social network analysis has been used for quite some time to analyze and understand the behavior of nodes in the network. Theses nodes could be individuals or group of persons, events or organizations etc. In fact these nodes could be any thing importantly, these nodes propagate and obviously have attributes. In this paper a very novel and absolutely new approach to SNA is presented, for locating the important key players in the network. The system also predicts a path comprising of selected nodes which shows the vulnerability of the network and if the path along with these nodes is removed it can reduce/destabilize or even destroy the structure of the network. The paper provides comparative results for a couple of random networks with various numbers of nodes and connections. In addition to these example networks it performs a case study of the nine eleven, 62 node networks (by Valdis E. Krebs) to predict a path for its destabilization. This network is selected to benchmark our proposed model framework. The results obtained with various network analysis shows that it works better than other analysis measures for example based on degree, betweeness and closeness etc.
Structural Characteristics of Porous Silicon  [PDF]
Qadeer Hussain, Arifullah  , Nazir A. Naz, Ammar Akbar, Akbar Ali
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2014, DOI: 10.4236/jsemat.2014.42014
Abstract:


Silicon wafers (p-type) were etched under continuous flow of HF vapors in a reaction chamber at standard temperature and pressure. Etched surface of the silicon wafer was found emitting red luminescence when exposed to ultra violet (UV) light. XRD and Atomic Force Microscopy of the etched samples were carried out to study the surface of the etched silicon. It is noticed that etching has removed the stress induced atomic layers of silicon at grain boundaries and layer of porous silicon has been formed at the surface of silicon wafer which has higher inter planer distance than the silicon itself. The size of dots observed on the surface of etched silicon is of the order of few nm. The red emission from the surface of etched silicon appears to be due to the energy states induced by quantum confinement.


Surface Analysis of Etched Silicon  [PDF]
Arifullah  , Qadeer Hussain, Nazir A. Naz, Ammar Akbar, Akbar Ali
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2014, DOI: 10.4236/jsemat.2014.42013
Abstract:


P-type (100) oriented silicon wafers were etched with vapors of concentrated Hydrofluoric acid in a reaction chamber under continuous vapor-flow at standard temperature and pressure. The surface morphology of the etched samples was examined by scanning electron microscope and pore size analyzer. The radius of the pores and quantum dots were found to be 6 nm and 4 nm respectively. Etched samples emitted red luminescence when exposed to ultra violet (UV) light. The red luminescence emitted by the etched surface has been assigned to energy states induced by quantum confinement of holes.


Evaluation of antimicrobial activity of a lectin isolated and purified from Indigofera heterantha  [PDF]
Sakeena Qadir, Ishfak Hussain Wani, Shaista Rafiq, Showkat Ahmad Ganie, Akbar Masood, Rabia Hamid
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.411133
Abstract:

Indigofera heterantha commonly called indigo bush is a member of leguminoseae family found in the Himalayan region of Kashmir. A lectin has been isolated from the seeds of Indigofera heterantha by the purification procedure involving anion exchange chromatography on DEAE-cellulose followed by gel filtration chromatography on Sephadex G 100. Molecular characterization of the lectin was done by gel filtration and SDS-PAGE. Activity of the lectin was checked by hemagglutination assay and the sugar specificity by sugar inhibition tests. The antimicrobial activity of the purified lectin was carried out by Agar disc diffusion using appropriate standards. On the ion exchange column, the bound protein when eluted with 0-0.5 M NaCl gradient emerged as three peaks—peak I, peak II and peak III out of which only peak II showed the hemagglutinating activity. The lectin further resolved into two peaks G1 and G2 on gel filtration, with the lectin activity residing in G1, corresponding to a molecular weight of 70 KDa. The purified lectin named as Indigofera heterantha Lectin (IHL) produced a single band on SDS PAGE (18 KDa), revealing the tetrameric nature of the lectin. It agglutinated human erythrocytes (A, B, AB, and O). Hemagglutination was inhibited by D-galactose, Dmannose and D-arabinose. The lectin is reasonably thermostable showing full activity within a temperature range of 30°C to 90°C. pH stability of the lectin falls in the range of 2-9. IHL demonstrated a remarkable antibacterial activity against the pathogenic bacteria Klebsiella pneumoniae, Staphylococcus aureus, Escherichia coli, and Bacillus subtilis. IHL also inhibited the growth

Synthesis, spectroscopic characterization and antimicrobial studies of mercury(II) complexes of thiolates
Ghulam Rabbani,Anvarhusein A. Isab,Abdul Rahman Al-Arfaj,Saeed Ahmad,Muhammad Saleem,Abdul Hameed,Erum Akbar
Spectroscopy: An International Journal , 2009, DOI: 10.3233/spe-2009-0369
Abstract: Mercury(II) complexes of thiolates having the general formula [Hg(RS)Cl2]? and [Hg(RS)2] have been prepared and characterized by IR and NMR (1H and 13C) spectroscopy (RSH = 2-aminoethanethiol hydrochloride (Aet), cysteine (Cys), thiosalicylic acid (Ts) and 2-mercaptonicotinic acid (Mnt)). The spectral data suggests that the coordination of thiolates to mercury(II) occurs through the sulfur as indicated by the absence of S–H vibrations in IR and significant downfield shifts in the C–S resonance in 13C NMR. However, in Mnt complexes, coordination through both sulfur and nitrogen is indicated. Antimicrobial activities of the complexes were evaluated by minimum inhibitory concentration and the results showed that the complexes exhibited a wide range of activities against gram-negative bacteria (E. coli, P. aeruginosa), while moderate activity was observed against a mold, P. citrinum.
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