Comparison of Resistance Level to Cotton leaf curl virus (CLCuV)Among Newly Developed Cotton Mutants and Commercial Cultivars

KhalidP.Akhtar,AzeemI.Khan,M.Hussain 한국식물병리학회 2002 Plant Pathology Journal Vol.18 No.4

Four newly developed cotton mutants (M-111, M-7662, M-358 and M-218) were compared for their resistance against Cotton leaf curl virus (CLCuV) together with commercial resistant (CIM-443, CIM-482, CIM-473, FH-900 and FH-901) and susceptible (S-12) varieties by artificial inoculation through grafting and under natural field conditions. Infectivity and success of grafting were 100% in all cases. None of the grafted plants were found immune or asymptomatic. All the grafted mutants and most of their single plant progeny rows (SPPRs) showed highly resistant responses as the symptoms displayed by these mutants were milder than the commercial cultivars. Grafted mutants also had delayed disease reactions as they took more time (25-30 days) to produce disease symptoms, as compared with resistant commercial varieties that produced disease 18-22 days after inoculation. Growth of the grafted SPPRs of tested mutants was normal, which is an indication that there will be no production losses. Observations under natural infestation of whitefly showed that two SPPRs of M-11/CE and M-7662-1/2 and one resistant variety CIM-443 exhibited slight incidence of disease, while one SPPR of M-11/59 and S-12 were moderately susceptible and highly susceptible with 21% and 97.1% disease incidence, respectively. This study also showed that plants displaying more disease symptoms through grafting were easily infected under natural conditions. These results suggest that preference should be given to those plants that exhibited highly resistant responses after artificial inoculation.

Genome-wide identification, annotation and characterization of novel thermostable cytochrome P450 monooxygenases from the thermophilic biomass-degrading fungi Thielavia terrestris and Myceliophthora thermophila

Khajamohiddin Syed,Karabo Shale,K. H. M. Nazmul Hussain Nazir,Nada Krasevec,Samson Sitheni Mashele,Nataraj Sekhar Pagadala 한국유전학회 2014 Genes & Genomics Vol.36 No.3

Cytochrome P450 monooxygenases (P450s)are ubiquitous heme-thiolate proteins that have potentialbiotechnological application. Thermostable-P450s that canwithstand hostile industrial conditions, such as high temperatures,extremes of pH and organic solvents, are neededfor biotechnological usage. Here, for the first time, wereport a large number of thermostable-P450s from twothermophilic biomass-degrading fungi, Myceliophthorathermophila and Thielavia terrestris. Genome-wide P450analysis revealed the presence of 79 and 70 P450s(P450ome) in T. terrestris and M. thermophila. AuthenticP450s containing both the P450 signature domains (EXXRand CXG) were classified as follows: T. terrestris (50families and 56 subfamilies) and M. thermophila (49families and 53 subfamilies). Bioinformatics analysis ofP450omes suggested the presence of a large number ofthermostable-P450s. Based on aliphatic index cut-off([90), 14 and 11 P450s were determined to be thermostablein T. terrestris and M. thermophila. Among thethermostable P450s, six P450s from T. terrestris and threefrom M. thermophila had a melting temperature (Tm) of[65 C, suggesting their hyperthermal tolerance. Analysisof the instability index of two ascomycete P450omesrevealed the presence of 12 and 19 in vitro stable P450s inT. terrestris and M. thermophila. Overall, six P450s fromT. terrestris and four from M. thermophila showed boththermal tolerance and in vitro stability. Thermophilicascomycetes P450s are of potential interest from a structural,mechanistic and biotechnological point of view, asfive P450s showed higher thermal tolerance and fiveshowed higher in vitro stability compared to the wellcharacterizedthermostable-P450s CYP175A1 (bacteria)and CYP119 (archaea).

Comparison of Resistance Level to Cotton leaf curl virus(CLCuV) Among Newly Developed Cotton Mutants and Commercial Cultivars

Akhtar, Khalid P.,Khan, Azeem I.,Hussain, M.,Khan, M.S.I. The Korean Society of Plant Pathology 2002 Plant Pathology Journal Vol.18 No.4

Four newly developed cotton mutants (M-111, M-7662, M-358 and M-218) were compared for their resistance against Cotton leaf curl virus(CLCuV) together with commercial resistant (CIM-443, CIM-482, CIM-473, FH-900 and FH-901) and susceptible (5-12) varieties by artificial inoculation through grafting and under natural field conditions. Infectivity and success of grafting were 100% in all cases. None of the grafted plants were found immune or asymptomatic. All the grafted mutants and most of their single plant progeny rows (SPPRs) showed highly resistant responses as the symptoms displayed by these mutants were milder than the commercial cultivars. Grafted mutants also had delayed disease reactions as they took more time (25-30 days) to produce disease symptoms, as compared with resistant commercial varieties that produced disease 18-22 days after inoculation. Growth of the grafted SPPRs of tested mutants was normal, which is an indication that there will be no production losses. Observations under natural infestation of whitefly showed that two SPPRs of M-ll/CE and M-7662-1/2 and one resistant variety CIM-443 exhibited slight incidence of disease, while one SPPR of M-l1/59 and S-12 were moderately susceptible and highly susceptible with 21% and 97.l% disease incidence, respectively. This study also showed that plants displaying more disease symptoms through grafting were easily infected under natural conditions. These results suggest that preference should be given to those plants that exhibited highly resistant responses after artificial inoculation.

Effect of Zn on the Magnetic and Magnetocaloric Properties of (0.95)La0.7Ca0.3MnO3/(0.05)Mn1−x Zn x Fe2O4 Composites

Hussain, I.,Anwar, M. S.,Lee, S. R.,Koo, B. H. Springer Science + Business Media 2015 Journal of superconductivity and novel magnetism Vol.28 No.11

<P>We report the structural, magnetic, and magnetocaloric properties of (0.95)La0.7Ca0.3MnO3/(0.05)Mn1-x Zn (x) Fe2O4 (x = 0.0, 0.1, 0.3, 0.5) composites. Polycrystalline samples of the composite material were prepared using the solid-state reaction method. The phase purity and structure of the samples were confirmed using the X-ray powder diffraction (XRD) method. Scanning electron microscope (SEM) studies of the samples reveal that Mn1-x Zn (x) Fe2O4 is mainly distributed at the surface and grain boundaries of the perovskite matrix La0.7Ca0.3MnO3. The variation of magnetization (M) as a function of temperature and applied magnetic field was investigated. The M-T data plots indicate a paramagnetic to ferromagnetic transition upon cooling in all samples. The magnetic entropy change was also studied through the examination of measured magnetic isotherms, M (H, T) near Curie temperature T (C) . A magnetocaloric effect has been estimated in terms of isothermal magnetic entropy change. A maximum entropy change value of 1.72 J/kg K was recorded for a magnetic field change of 3 T with a relative cooling power (RCP) value of 177 J/kg for the (0.95)La0.7Ca0.3MnO3/(0.05)MnFe2O4 composite sample.</P>

MECHANISED RICE SHARE FARMING IN PERMATANG PAUH SEBERANG PERAI , MALAYSIA - A MANAGEMENT EXPERIENCE

Hussain,M . D . 한국농업기계학회 1993 ICAMPE 요약집 Vol.2 No.-

Transient Multipath routing protocol for low power and lossy networks

( M Ali Lodhi ),( Abdul Rehman ),( Meer M Khan ),( Muhammad Asfand-e-yar ),( Faisal Bashir Hussain ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.4

RPL routing protocol for low-power and lossy networks is an Internet Engineering Task Force (IETF) recommended IPv6 based protocol for routing over Low power Lossy Networks (LLNs). RPL is proposed for networks with characteristics like small packet size, low bandwidth, low data rate, lossy wireless links and low power. RPL is a proactive routing protocol that creates a Directed Acyclic Graph (DAG) of the network topology. RPL is increasingly used for Internet of Things (IoT) which comprises of heterogeneous networks and applications. RPL proposes a single path routing strategy. The forwarding technique of RPL does not support multiple paths between source and destination. Multipath routing is an important strategy used in both sensor and ad-hoc network for performance enhancement. Multipath routing is also used to achieve multi-fold objectives including higher reliability, increase in throughput, fault tolerance, congestion mitigation and hole avoidance. In this paper, M-RPL (Multi-path extension of RPL) is proposed, which aims to provide temporary multiple paths during congestion over a single routing path. Congestion is primarily detected using buffer size and packet delivery ratio at forwarding nodes. Congestion is mitigated by creating partially disjoint multiple paths and by avoiding forwarding of packets through the congested node. Detailed simulation analysis of M-RPL against RPL in both grid and random topologies shows that M-RPL successfully mitigates congestion and it enhances overall network throughput.

Comparative adsorption–regeneration performance for newly developed carbonaceous adsorbent

H.M.A. Asghar,S.N. Hussain,N.W. Brown,E.P.L. Roberts 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.69 No.-

A proprietary adsorbent material called Nyex 1000 was developed by the Arvia Technology Ltd. (UK based waste water treatment company). Nyex 1000 was being employed for a number of commercial applications dealing with the removal of organic contaminants from industrial effluents. This adsorbent material had small adsorptive capacity. With the aim to address small adsorptive capacity, a new graphite based adsorbent material was developed. The particle design was accomplished through successive chemical, thermal and mechanical treatments of raw graphite material (natural large flake graphite, to be called here as NLFG). The chemical treatment of the NLFG was carried out through electrochemical intercalation using dilute (50%) sulfuric acid in an electrochemical cell. Chemically treated NLFG then went through thermal treatment at 850 °C and followed by mechanical treatments consisting of compression (4536 kgf cm−2) and chopping at 18,000 rpm for 30 s. The developed adsorbent material, (exfoliated compacted graphite, to be called here as ECG) and NLFG were characterized using state of the art techniques including SEM, BET surface area, XRD, Zeta potential, Boehm surface titration, bed electrical conductivity and laser size analysis. The characterization results showed significant increase in internal specific surface area from 1 to 17 m2 g−1. It was attributed to the development of partially porous particle surface verified by SEM results. The XRD, Boehm surface titration, Zeta potential results endorsed the associated chemical and physical changes appeared in the composition of the NLFG as a result of chemical, thermal and mechanical treatments. Adsorption-regeneration studies were conducted using developed ECG and existing Nyex 1000 materials. The pollutants used for adsorption–regeneration studies were acid violet 17, phenol, humic acid, ethane thiol and methyl propane thiol dissolved in aqueous solution. The results were compared and it was found that ECG showed significantly improved adsorption capacity with many folds. Both adsorbent materials, ECG and Nyex 1000 delivered 100% electrochemical regeneration efficiencies.

Weighted L^(p) Boundedness for the Function of Marcinkiewicz

AL-QASSEM, HUSSAIN M. 대한수학회 2006 Kyungpook mathematical journal Vol.46 No.1

In this paper, we prove a weighted norm inequality for the Marcinkiewicz integral operator M_(Ω,h) when h satisfies a mild regularity condition and Ω belongs to L(log L)^(1/2)(S^(n-1)), n ≥ 2. We also prove the weighted L^(P) boundedness for a class of Marcinkiewicz integral operators M^(*)_(Ω,h,λ) and M_(Ω,h,s) related to the Littlewood-Paley g^(*)_(λ)-function and the area integral S, respectively.

Electronic structure of p-type transparent conducting oxide CuAlO2

Salah Mohamed,Yoon Joonseok,El-Desoky Mohamed M.,Hussain Zahid,Ju Honglyoul,Mo Sung-Kwan 한국물리학회 2022 Current Applied Physics Vol.39 No.-

Copper-based delafossite oxides are excellent candidates for the p-type transparent conducting oxide (TCO), which is essential in realizing transparent semiconductor applications. Using angle-resolved photoemission spectroscopy (ARPES), we report the low-energy electronic structure of CuAlO2. We found that the band structure near the valence band top is characterized by hole bands with their maxima along the Brillouin zone boundary. Furthermore, the effective masses along the Γ–M and Γ–K directions were found to be (0.6 ± 0.1) m0 and (0.9 ± 0.1) m0, respectively, which impose an important benchmark against the existing band calculations.

Synthesis, Thermal Decomposition Pattern and Single Crystal X-Ray Studiesof Dimeric [Cu(dmae)(OCOCH₃)(H₂O)]₂: A Precursor for the Aerosol Assisted Chemical Vapour Deposition of Copper Metal Thin Films

Mazhar, Muhammad,Hussain, S.M.,Rabbani, Faiz,Kociok-Kohn, Gabriele,Molloy, Kieran C. Korean Chemical Society 2006 Bulletin of the Korean Chemical Society Vol.27 No.10

A dimeric precursor, $[Cu(dmae)(OCOCH_3)(H_2O)]_2$ for the CVD of copper metal films, (dmaeH = N,N-dimethylaminoethanol) was synthesized by the reaction of copper(II) acetate monohydrate ($Cu(OCOCH_3)_2{\cdot}H_2O$) and dmaeH in toluene. The product was characterized by m.p. determination, elemental analysis and X-ray crystallography. Molecular structure of $[Cu(dmae)(OCOCH_3)(H_2O)]_2$ shows that a dimeric unit $[Cu(dmae)(OCOCH_3)(H_2O)]_2$ is linked to another through hydrogen bond and it undergoes facile decomposition at 300 C to deposit granular copper metal film under nitrogen atmosphere. The decomposition temperature, thermal behaviour, kinetic parameters, evolved gas pattern of the complex, morphology, and the composition of the film were also investigated.