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  • Answer added in Green Chemistry
    1 Does anyone know how to eliminate fluoride ion from 20% phosphoric acid solution?
    By Samad Khaksar · Islamic Azad University - Science and Research Ayatollah Amoli Branch
    Heiko Leutbecher · Hohenheim University
    I´m not sure wether you will be successful, but you could reflux the acid and distil a portion from it. Maybe HF will evaporate first. 
  • Answer added in Statistics
    16 What is the descriptive power of a model with R-squared equal to 1%?
    By Demetris Christopoulos · National and Kapodistrian University of Athens
    Demetris Christopoulos · National and Kapodistrian University of Athens
    @George, I am going from the secondary to the primary: of course the issue is not R^2=1% but the over-estimated validity of Econometrics, which, by th... [more]
  • Question asked in Video Processing
    New I seek what is complexcity of the 2D-DWT transform computed in O (-)
    I use the 2D-DWT on images at level Nr=3 in video fingerprinting and I try to evaluate my system. I itry to calculate the complexcity of the system bu... [more]
    By Aissa Boukhari · University of Science and Technology Houari Boumediene
  • Answer added in Evolution
    199 Can Intelligent Design (ID) be considered a valid scientific theory?
    Thomas Lettner · EB-Haus Austria
    Hello Konstantin, of course you can copy it. But before you show it to your students you should double-check the details about dates, names, and of co... [more]
  • Answer added in Geomatics
    1 How to use the product MOD43A3 (Albedo), in environmental studies?
    By Miguel Armando López Beltrán · Universidad Autónoma de Sinaloa
  • Answer added in Cloud Computing
    3 Does the use of DL (description logic) to describe web services solves the problem of transition to the scale?
    By Samah Benmerbi · Université de Béjaïa
    Samir Amir · Université des Sciences et Technologies de Lille 1
    take a look to that paper ? "Description Logic vs. Order-Sorted Feature Logic" author : Hassan Ait-KAci 
  • Question asked in Nanoparticle Synthesis
    New Nanoparticle collid
    I prepared Ag nanoparticles using PLA, I would like to ask about the effect of polarized light on growth of nanowires 
    By Mukhlis Ismail · University of Technology, Iraq
  • Answer added in Docking Softwares
    5 MGL tools.
    By Madhulika Chaudhry · Vellore Institute of Technology
    Uttam Pal · Indian Institute of Chemical Biology
    Use it on a linux 64-bit system. Preferably on Ubuntu. You can directly install it from software center and it works like a charm. 
  • Question asked in Fish
    New Fish - A healthy food for nutritional security?
    There are raising concerns as to why fish should be considered, in the context of alarming marine pollution, a healthy food and for nutritional securi... [more]
    By Azad Saheb · Kuwait Institute for Scientific Research
  • Question asked in Statistical Analysis
    New Do you think the log-transformation of a covariate has become a sacralized tool?
    Sometimes it is not useful at all, specially in very skewed distributions, with many values=0. We don´t get the normality, and the problem goes on. ... [more]
    By Emilio Pariente-Rodrigo · Servicio Cántabro de Salud
  • Answer added in Microbiology
    2 Besides novobiocin and chlorpromazine, are there other compounds that cure bacteria of plasmids?
    By Leonard Amaral · Universidade NOVA de Lisboa
    Leonard Amaral · Universidade NOVA de Lisboa
    I disagree with you. Depending on the size and number of copies of plasmids, you can eliminate completely within one or two generations of plasmids th... [more]
  • Answer added in Computer Science Education
    86 What happened with “The Fifth Generation Computer Systems project (FGCS)”?
    By Ljubomir Jerinic · Univerzitet u Novom Sadu
  • Answer added in Composites
    2 How Can I be sure about the presence of nanoparticles within a PVA-nanocomposite film with low particle concentration when XRD is not supporting?
    By Subhojyoti Sinha · National Institute of Technology, Durgapur
    Indraneel Sen · Variable Energy Cyclotron Centre
    What are your nanoparticle dimensions and do they fluoresce? There are a bunch of optical techniques available that you can use. Like near field opti... [more]
  • 1 Verted retina of invertebrates converted to inverted retina in human beings. Is this bad or good natural development?
    By Manjeet Singh · BPS Medical College for Women
  • Answer added in Diabetes
    61 Benefits of the "Paleo" diet for health and performance. Are there any? And is it relevant to consider what we evolved to eat?
    By David Hamilton · University of Stirling
    Paul Dessauer · WASUA
    Dietary composition and nutrient content of the New Nordic Diet. Charlotte Mithril, Lars Ove Dragsted, Claus Meyer, Inge Tetens, Anja Biltoft-Jens... [more]
  • Answer added in Drosophila Development
    2 What can I use to permeabilize the vitelline membrane of a drosophila embryo?? Leave out the D-Limonene, suppose we don't have access to it.
    By Arijit Ghosh · The National Institute of Science Education and Research
    Arijit Ghosh · The National Institute of Science Education and Research
    Hi Helena, Actually I was thinking of not using Heptane or Hexane, because I will be doing live imaging and embryo viability is a real concern here, w... [more]
  • Answer added in Photoluminiscence
    3 Problem with photoluminescence of ZnO thin films?
    By M. Baseer Haider · King Fahd University of Petroleum and Minerals
    Yuriy Gnatenko · National Academy of Sciences of Ukraine
    The laser wavelength and the excitation power are sufficient to excite the photoluminescence of ZnO films. And so the problem can be caused with the m... [more]
  • Answer added in Photocopying
    5 Can you explain what happens when you photocopy a mirror?
    By Derek Abbott · University of Adelaide
  • Question asked in Global Optimization
    New Genetic Algorithm and constraints {0} U [a,b]
    I am using a genetic algorithm to solve a multivariable optimization problem. The difficulty in exploring all the solutions is that the permissible se... [more]
    By Hector Ledesma · Universitetet i Agder
  • Answer added in fMRI
    5 Has any study clearly demonstrated that fMRI can predict motor recovery after stroke?
    By Paolo Vitali · IRCCS Fondazione Istituto Neurologico Nazionale C. Mondino
    Paolo Vitali · IRCCS Fondazione Istituto Neurologico Nazionale C. Mondino
    Thank you Denny and Eugenio for your answers. So, it looks like that for both of you, fMRI can be unpractical as tool to predict recovery... 
  • Answer added in Semiconductor
    2 What is the correlation between electromagnetic waves and material ?
    By Simeon swaroop S · Society for Applied Microwave Electronics Engineering & Research
    Simeon swaroop S · Society for Applied Microwave Electronics Engineering & Research
    if a material (copper wires) used in the tx and rx . while a wave is generated to deliver in air after that in air we are saying that it is a EM wave... [more]
  • Question asked in oil absotion of fish crackers
    New Oil absorption
    Fish cracker analysis 
    By Nor Zul · Universiti Sultan Zainal Abidin | UniSZA
  • Question asked in Educational reforms
    New more recourse allocation in education sector without good governance will be beneficial or not ? in Pakistan and india context
    education system has been suffering from governance crises in Pakistan rather lack of resources. better implementation of education policy is prerequi... [more]
    By Haseeb Musawir · University of Karachi
  • Question asked in Plant Tissue Culture
    New How long experiment is enough for reaching to the best disinfection method for plants in vitro culture?
    I am evaluating the best disinfection method for in vitro culture of a wild plant. How long is enough to continue the experiment? is one month enough... [more]
    By Saba Saboori · University of Tehran
  • Answer added in Plant Physiology
    1 Is it possible to determine nitrogen concentration colorimetrically, using spectrophotometer?
    By Frida Piper · Centro de Investigación en Ecosistemas de la Patagonia
  • Answer added in Expression Microarrays
    13 Expressions of the majority of genes do not change significantly between control and experiment group?
    By Qianhui Yu · Chinese Academy of Sciences
    I do agree with Fedora Sutton that statistical analysis is obligatory, before presumptions are made. Importantly, repeat experiments are needed and de... [more]
  • Answer added in Diabetes
    12 Definite causes of acute pancreatitis?
    By Eugene Pretorius · University of the Free State
    Andrey Borodach · Novosibirsk State Medical University
    Here is one more full-text article on hereditary acute pancreatitis in adults from Annals of Surgery: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1242... [more]
  • Answer added in Gas
    4 Does anybody know if there exist research over future tsunamies caused by the oil and gas industry?
    By Eva Dust ·
    Thanks very much for the long answer, best regards, Eva 
  • Answer added in Cancer Biology
    2 What is the major fuel of the cancer cell?
    By sheng ju Chuang · Taipei Physical Education College
    Leonard Amaral · Universidade NOVA de Lisboa
    Most cancer cells have impaired mitochondria and therefore energy is via glycolysis. This process is 16 times less efficient than the electron transpo... [more]