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Biomass Partitioning and Genetic Analyses of Salinity Tolerance in Sunflower (Helianthus annuus L.)
Rauf, Saeed,Shahzad, Muhammad,da Silva, Jaime A. Teixeira,Noorka, Ijaz Rasool 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.3
Biomass partitioning was studied in sunflower (Helianthus annuus L.) inbred lines and their hybrids differing in salinity resistance. Differential biomass partitioning was observed among resistant and susceptible lines as well as within resistant lines, which were grown in large pots. Traits such as number of dead leaves and total number of nodes may be used as dominant markers for understanding the mechanism of resistance to salinity. Multi-location trials differing for salinity levels showed low and non-significant heritabilities across the environment for biochemical traits showing their sensitivity to the environment and a significant G ${\times}$ E interaction. Thus selection could only possible within the salinity level for these traits. Contrastingly, morphological traits such as number of nodes showed significant heritabilities (narrow or broad sense) across the environment. These traits may be exploited by the selection of inbred lines across or with salinity levels. Among various salinity levels, 12 $dSm^{-1}$ was found to be feasible for screening and selection as it promoted the additive type of gene action.
Symbolic Indicators and User Perception Performance in Indian Industries and Public Places
( Rauf Iqbal ),( Hiren Shah ),( Amitabha De ),( Suman Mukhopadhyay ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
During the past two decades, the body of empirical research on warning design and evaluation has grown steadily. Consequently, there are now basic principles and guidelines addressing warning design and how to enhance the usability of designs by considering factors internal to the user e.g., beliefs, perceptions of risk and stress. Industrial & public safety icons need to be more recognizable due to globalisation and liberalisation of economies and due necessity to communicate message effectively and effortlessly. Many a times industrial & public safety icons are not recognized, which result in accident, injury and loss. A study was carried out to investigate the recognition rate of symbolic indicators by select industrial workforce and to evaluate whether the icons encountered in every-day activities met the comprehension criteria of ISO Standards. The study was conducted on 37 males and 53 females belonging to various age groups and qualification level. The study included 60 icons used in industry (n=30) and public places (n=30). A paper-based icon recognition questionnaire was prepared and used to examine icon recognition and perception performance over different groups. Each icon was given a unique code for its identification which the participant needed to search out from the codes given below the corresponding icon and fill it in their response sheet. Results show that failure rate to recognize icons used in industrial operations are much higher than the icons used in public places.
Rauf Foroutan,Reza Mohammadi,Bahman Ramavandi 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.1
Biosorption properties of a CaCl2-modified Sargassum oligocystum algae biomass for removal of Cr(VI) from aqueous solutions were investigated. Experimental parameters affecting the biosorption process such as pH, contact time, biosorbent dosage, and temperature were studied. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), mapping test, energy-dispersive X-ray spectroscopy (EDX), and specific surface area were used to assess the physico-chemical properties the biosorbent. The surface area of biosorbent was found to be 35.64m2/g. FTIR test revealed that the active groups of -OH, -NH2, -C-H, C-O, -C-N, and S=O were present on the surface of CaCl2-modified S. oligocystum biomass. The kinetic behavior of the chromium biosorption by modified S. oligocystum biomass followed well pseudo-second order kinetic (R2>0.999). The biosorption equilibrium occurred at 100th min of contact time. The Langmuir, Freundlich, and Dubinin-Radushkevich models were applied to describe the biosorption isotherm of Cr(VI) onto modified S. oligocystum biomass. According to the RL and n parameters of the studied isotherms, the Cr(VI) biosorption process was physical and desirable. The chromium biosorption capacity of modified S. oligocystum biomass was found to be 34.46mg/g. The calculated thermodynamic parameters (ΔGo, ΔHo, and ΔSo) indicated that the biosorption of Cr(VI) onto modified S. oligocystum biomass algae was feasible, spontaneous, and exothermic under examined conditions.
Rauf, Ali,Ma, Ming,Kim, Sungsoon,Sher Shah, Md. Selim Arif,Chung, Chan-Hwa,Park, Jong Hyeok,Yoo, Pil J. Royal Society of Chemistry 2018 Nanoscale Vol.10 No.6
<P>Exploring new single, active photocatalysts for solar-water splitting is highly desirable to expedite current research on solar-chemical energy conversion. In particular, Z-scheme-based composites (ZBCs) have attracted extensive attention due to their unique charge transfer pathway, broader redox range, and stronger redox power compared to conventional heterostructures. In the present report, we have for the first time explored Cu3P, a new, single photocatalyst for solar-water splitting applications. Moreover, a novel ZBC system composed of Bi2WO6-Cu3P was designed employing a simple method of ball-milling complexation. The synthesized materials were examined and further investigated through various microscopic, spectroscopic, and surface area characterization methods, which have confirmed the successful hybridization between Bi2WO6 and Cu3P and the formation of a ZBC system that shows the ideal position of energy levels for solar-water splitting. Notably, the ZBC composed of Bi2WO6-Cu3P is a mediator- and co-catalyst-free photocatalyst system. The improved photocatalytic efficiency obtained with this system compared to other ZBC systems assisted by mediators and co-catalysts establishes the critical importance of interfacial solid-solid contact and the well-balanced position of energy levels for solar-water splitting. The promising solar-water splitting under optimum composition conditions highlighted the relationship between effective charge separation and composition.</P>
Nest preference and ecology of cavity-nesting bees (Hymenoptera: Apoidea) in Punjab, Pakistan
Rauf Abdur,Saeed Shafqat,Ali Mudssar,Tahir Muhammad Hammad Nadeem 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
Among bees, 85 % are solitary species, most of them are ground-nester and some are cavity-nesting and construct their nests in pre-existing cavities. This work was conducted to evaluate the substrate preference and nest ar chitecture (acceptance, occupation percentage, seasonality and parasitism) of cavity-nesting bees in different substrates. Trap nests offered comprised five different materials (drilled cavities in wood, bamboo, cardboard tubes, plastic soda straws, and mud blocks). These were installed in four districts for two years. The nesting cavities of five different diameters (6, 8, 10, 12 and 14 mm) were provided in each nesting material with an average length of 180 ± 9.92 mm. In all the materials, 5400 nesting cavities were offered, out of which 628 were colonized by bees from two families (Megachilidae and Apidae) and six species (Megachile cephalotes, M. lanata, M. bicolor, Xylocopa basalis, X. fenestrata and Ceratina smaragdula), including one parasitic bee (Euaspis carbo naria). The bee species differed significantly in occupying five nesting materials. The most preferred diameters were 8 mm and 10 mm, with 52.20% and 29.45% of colonization, respectively. Nesting was done throughout the year except in winter. This study will serve as a baseline for future studies and conservation programs of cavitynesting bees in Pakistan.
Rauf, Abdur,Uddin, Ghias,Raza, Muslim,Ahmad, Aftab,Jehan, Noor,Ahmad, Bashir,Nisar, Muhammad,Molnar, Joseph,Csonka, Akos,Szabo, Diana,Khan, Ajmal,Farooq, Umar,Noor, Mah Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Pistagremic acid (PA) is a bioactive triterpenoid isolated from various parts of Pistacia integerrima plants. The aim of this research was to investigate PA for reversion of multidrug resistant (MDR) mediated by P-glycoprotein using rhodamine-123 exclusion study on a multidrug resistant human ABCB1 (ATP-binding cassette, sub-family B, member 1) gene-transfected mouse T-lymphoma cell line in vitro. Results were similar to those with verapamil as a positive control. Docking studies of PA and standard Rhodamine123 were carried out against a P-gp crystal structure which showed satisfactory results. Actually, PA cannot bind exactly where co-crystallized ligand of P-gp is already present. However, the docking study predicted that if a compound gives a lesser score then it may have some potency. The docking scores of PA and Rhodamine were similar. Therefore, we can conclude that there are certain important chemical features of PA which are responsible for the inhibiting potency of P-gp.
Rauf Foroutan,Reza Mohammadi,Bahman Ramavandi,Maryam Bastanian 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.11
Activated carbon (AC) was synthesized from Phoenix dactylifera stones and then modified by CoFe2O4 magnetic nanocomposite for use as a Cr(VI) adsorbent. Both AC/CoFe2O4 composite and AC were fully characterized by FTIR, SEM, XRD, TEM, TGA, and VSM techniques. Based on the surface analyses, the addition of CoFe2O4 nanoparticles had a significant effect on the thermal stability and crystalline structure of AC. Factors affecting chromium removal efficiency like pH, dosage, contact time, temperature, and initial Cr(VI) concentration were investigated. The best pH was found 2 and 3 for Cr adsorption by AC and AC/CoFe2O4 composite, respectively. The presence of ion sulfate had a greater effect on the chromium sorption efficiency than nitrate and chlorine ions. The results illustrated that both adsorbents can be used up to seven times to adsorb chromium. The adsorption process was examined by three isothermal models, and Freundlich was chosen as the best one. The experimental data were well fitted by pseudo-second-order kinetic model. The half-life (t1/2) of hexavalent chromium using AC and AC/CoFe2O4 magnetic composite was obtained as 5.18min and 1.52min, respectively. Cr(VI) adsorption by AC and AC/CoFe2O4 magnetic composite was spontaneous and exothermic. In general, our study showed that the composition of CoFe2O4 magnetic nanoparticles with AC can increase the adsorption capacity of AC from 36mg/L to 70mg/L.