[PE-0011] Identification of quantitative trait loci for salinity tolerance in rice using Cheongcheong, Nagdong mapping population

Saleem Asif(Saleem Asif ),Rahmatullah Jan(Rahmatullah Jan),Kyung-Min Kim(Kyung-Min Kim) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-

Quantitative Analyses of Esophageal Cancer Research in Pakistan

Qureshi, Muhammad Asif,Khan, Saeed,Ujjan, Ikram Din,Iqbal, Asif,Khan, Ramsha,Khan, Bilal Ahmed Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.7

Background: Health-care research is a neglected discipline in Pakistan and research related to esophageal cancer (ranks 9th in Pakistani males and 5th in females) is no exception in this regard. Particularly, there are no data available to delineate the overall status of esophageal cancer epidemiological studies in Pakistan. This study describes the first ever effort to make a systematic quantification, in an attempt to provide a road-map to all stakeholders for designing appropriate epidemiological, diagnostic and therapeutic strategies. Materials and Methods: International (PubMed, ISI Web of Knowledge) and local (PakMedinet) scientific databases as well as Google search engine were searched using specified keywords to extract relevant publication. Well-defined inclusion criteria were implemented to select publications for final analyses. All data were recorded by at least 3 authors and consensus data were entered into and analyzed for descriptive statistics (such as frequencies, percentages and annual growth rates) using Microsoft Excel and SPSS software. Results: A total of 79 publications fulfilled the inclusion criteria including 20 publications for which full texts were not available. Of the 79 publications, 59 (74.6%) were original/research publications, 5 (6.3%) were case reports, 4 (5.1%) were research communications, 2 (2.5%) were review articles, 1 was (1.2%) correspondence and 8 (10.1%) were undefined categories. Only 13 (<20%) cities of Pakistan contributed towards the 79 publications. On average, only 1.9 relevant publications/year were published from 1976 (year of first publication) to the present. Alarmingly, a decline in the annual growth at -4.1% was recorded in the last six years. Conclusions: Esophageal cancer research is largely unfathomed in Pakistan. Urgent/dramatic steps are required by all concerned to address this common (and under reported) cancer of Pakistan.

Electrically conductive polyaniline-titanium(IV)molybdophosphate cation exchange nanocomposite: Synthesis, characterization and alcohol vapour sensing properties

Asif Ali Khan,Umair Baig,Mohd. Khalid 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4

Electrically conductive polyaniline-titanium(IV)molybdophosphate (PANI-TMP) cation exchange nanocomposite was studied as sensing material for aliphatic alcohols (methanol, ethanol and 1-propanol) at room temperature. The nanocomposite was synthesized by sol–gel mixing of polyaniline (PANI) into inorganic precipitate of titanium(IV)molybdophosphate (TMP) and characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA) and ultravioletvisible spectroscopy (UV-Vis). The composite showed good ion-exchange capacity, electrical conductivity and resistivity response towards alcohol vapours. It was observed that the sensor show good reversible response towards methanol vapours compared to ethanol and 1-propanol vapours. These studies suggest that the nanocomposite cation exchanger could be a good sensing material for methanol vapours at room temperature (25 8C).

Cooperative Content Caching and Distribution in Dense Networks

( Asif Kabir ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.11

Mobile applications and social networks tend to enhance the need for high-quality content access. To address the rapid growing demand for data services in mobile networks, it is necessary to develop efficient content caching and distribution techniques, aiming at significantly reduction of redundant content transmission and thus improve content delivery efficiency. In this article, we develop optimal cooperative content cache and distribution policy, where a geographical cluster model is designed for content retrieval across the collaborative small cell base stations (SBSs) and replacement of cache framework. Furthermore, we divide the SBS storage space into two equal parts: the first is local, the other is global content cache. We propose an algorithm to minimize the content caching delay, transmission cost and backhaul bottleneck at the edge of networks. Simulation results indicates that the proposed neighbor SBSs cooperative caching scheme brings a substantial improvement regarding content availability and cache storage capacity at the edge of networks in comparison with the current conventional cache placement approaches.

Electrically conductive membrane of polyaniline–titanium(IV)phosphate cation exchange nanocomposite: Applicable for detection of Pb(II) using its ion-selective electrode

Asif Ali Khan,Umair Baig 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6

PVC supported membranes of polyaniline–titanium(IV)phosphate (PANI–TiP) cation exchange nanocomposite were prepared by solution casting method in different stoichiometric ratios of PVC and PANI–TiP. The structure and morphology of the prepared membrane were ascertained by FTIR, SEM and TGA–DTA. The membrane having a composition 1:1 (PVC:PANI–TiP) shows best results for electrical conductivity, water content, porosity, thickness and swelling. The Pb(II) selective electrode was developed by using this membrane for the determination of lead in solutions. The membrane electrode was mechanically stable, having wide dynamic range, with quick response time and could be operated for at least 5 months.

Preparation, characterization and kinetics of ion exchange studies of Ni2+ selective polyaniline–Zr(IV)molybdophosphate nanocomposite cation exchanger

Asif Ali Khan,Shakeeba Shaheen 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.26 No.-

Polyaniline–Zr(IV)molybdophosphate (PAZMP) was synthesized by sol–gel mixing of polyaniline (PANI) into the inorganic precipitate Zr(IV)molybdophosphate (ZMP). The physico-chemical properties of the material were characterized by using XRD, TGA, FTIR, SEM and TEM. Distribution studies for various metal ions revealed that the composite is highly selective for Ni2+. Its selectivity was examined by achieving some important binary separations of metal cations which indicatesits utility in environmental pollution control. Ion-exchange kinetics for few divalent metal ions was evaluated by particle diffusion-controlled ion- exchange phenomenon at different temperatures. Some physical parameters like D0, Ea and DS0 have been evaluated under favoring a particle diffusion-controlled mechanism.

A Very Simple Method for Assessing Tall Building Safety in Major Fires

Asif Usmani,Charlotte Roben,Ahmad Al-Remal 한국강구조학회 2009 International Journal of Steel Structures Vol.9 No.1

The collapse of tall buildings in a densely populated urban setting is a scenario too terrible to contemplate. Buildings are routinely designed to resist this limit state under the extreme loading conditions of high winds and earthquakes etc. However the potential of multiple floor fires to cause such a disaster remains unrecognised in the profession as no current building codes require the consideration of this type of extreme loading. Previous work by the author and his students has demonstrated that the collapse of tall buildings in multiple floor fires is a distinct possibility as the mechanisms that can cause this are easily reproduced using a non-linear finite element analysis programme. This work has been extended by the author and his students to develop a simple analytical method for systematically assessing the collapse of exterior columns of tall buildings for any given fire scenarios. This paper considerably simplifies the method developed previously to the extent that the limit state of collapse under multiple floor fires can be checked even without the need to consider any particular “design” fire and with calculations that can be performed in minutes. This is based on the assumption that in major fires that affect multiple floors, it is quite likely that a number of floors will reach a state of deflection and reduced stiffness that the main load carrying mechanism will be that of catenary action leading to destabilising pull-in forces to be exerted on exterior columns. The paper will outline all the steps that must be carried out to check if the remaining structure (columns, floors, connections etc.) will remain stable under the action of the pull-in forces. It will also provide theoretical justification and discussion for all the steps and assumptions made in the assessment. Furthermore the method will be applied to a number of examples, including that of the WTC towers to check if those buildings were safe under major fires involving multiple floors. The collapse of tall buildings in a densely populated urban setting is a scenario too terrible to contemplate. Buildings are routinely designed to resist this limit state under the extreme loading conditions of high winds and earthquakes etc. However the potential of multiple floor fires to cause such a disaster remains unrecognised in the profession as no current building codes require the consideration of this type of extreme loading. Previous work by the author and his students has demonstrated that the collapse of tall buildings in multiple floor fires is a distinct possibility as the mechanisms that can cause this are easily reproduced using a non-linear finite element analysis programme. This work has been extended by the author and his students to develop a simple analytical method for systematically assessing the collapse of exterior columns of tall buildings for any given fire scenarios. This paper considerably simplifies the method developed previously to the extent that the limit state of collapse under multiple floor fires can be checked even without the need to consider any particular “design” fire and with calculations that can be performed in minutes. This is based on the assumption that in major fires that affect multiple floors, it is quite likely that a number of floors will reach a state of deflection and reduced stiffness that the main load carrying mechanism will be that of catenary action leading to destabilising pull-in forces to be exerted on exterior columns. The paper will outline all the steps that must be carried out to check if the remaining structure (columns, floors, connections etc.) will remain stable under the action of the pull-in forces. It will also provide theoretical justification and discussion for all the steps and assumptions made in the assessment. Furthermore the method will be applied to a number of examples, including that of the WTC towers to check if those buildings were safe under major fires involving multiple floors.

Biologically active compounds from natural and marine natural organisms with antituberculosis, antimalarial, leishmaniasis, trypanosomiasis, anthelmintic, antibacterial, antifungal, antiprotozoal, and antiviral activities

Asif, Mohammad Cellmed Orthocellular Medicine and Pharmaceutical 2016 셀메드 (CellMed) Vol.6 No.4

The biologically active compounds derived from different natural organisms such as animals, plants, and microorganisms like algae, fungi, bacteria and merine organisms. These natural compounds possess diverse biological activities like anthelmintic, antibacterial, antifungal, antimalarial, antiprotozoal, antituberculosis, and antiviral activities. These biological active compounds were acted by variety of molecular targets and thus may potentially contribute to several pharmacological classes. The synthesis of natural products and their analogues provides effect of structural modifications on the parent compounds which may be useful in the discovery of potential new drug molecules with different biological activities. Natural organisms have developed complex chemical defense systems by repelling or killing predators, such as insects, microorganisms, animals etc. These defense systems have the ability to produce large numbers of diverse compounds which can be used as new drugs. Thus, research on natural products for novel therapeutic agents with broad spectrum activities and will continue to provide important new drug molecules.

Evaluation of thermodynamic and kinetic parameters for conducting nanocomposite polypyrrole zirconium titanium phosphate

Asif Ali Khan,Leena Paquiza 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6

The kinetics and mechanism for the ion-exchange processes like Mg(II)–H(I), Ca(II)–H(I), Sr(II)–H(I),Ba(II)–H(I), Ni(II)–H(I), Cu(II)–H(I), Mn(II)–H(I) and Zn(II)–H(I) at different temperatures usingapproximated Nernst–Plank equation under the particle diffusion controlled phenomenon werestudied for the polypyrrole zirconiumtitanium phosphate nanocomposite cation exchanger. TEM provesthe formation of the nanocomposite cation exchanger. Some physical parameters, i.e. fractionalattainment of equilibrium UðtÞ, self-diffusion coefficients (D0), energy of activation (Ea) and entropy ofactivation (DS8) have been estimated. These results are useful for predicting the ion exchange processoccurring on the surface of this cation-exchanger.

Application of Soft Actuation to Bilateral Control and Haptic Reproduction

Asif Šabanovi´c,Tarik Uzunovi´c,Eray A. Baran,Minoru Yokoyama,Tomoyuki Shimono 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.3

The main research topic of this paper is to apply the sliding mode based soft actuation to smooth transition between position, force, and impedance control, and realize bilateral control and reproduction of the haptic motion. The proposed design rests on the sliding mode two steps procedure: in the first step, the generalized error - the sliding mode function - is selected in such a way that a closed loop system exhibits a desired dynamics. In the soft actuation method, the generalized error depends on the position and the force, thus allowing the modification of the position tracking if interaction with the environment appears. In the second step, the control is selected to enforce the desired convergence rate and the stability of the closed loop dynamics. The control allows “natural-human-like” behavior. The application to the bilateral control and reproduction of the haptic motion is discussed in detail and verified by experiments.