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  • Yordanka Ivanova added an answer in Journal Impact Factor:
    4
    Do we need a criteria called Impact Factor to assess the quality of the Journal?

    eLife is a journal which say in their policy that they will not encourage impact factor.They now have nearly 10 IF.So do we need IFs to assess the quality of the journal.

    Yordanka Ivanova

    Instead of relying on a single measure, a more objective approach would be to view ISI-SCI Impact Factor (Thompson Reuters’ Journal Citation Reports), in addition to other measures - e.g. Scopus-based Impact Factor (SJR). These measures may somewhat differ. However, the increase in an impact factor of a journal could be due to a higher number of self-citations. I would suggest consulting the attached article. Although not specifically devoted to the impact factor it still addresses some of these issues. Hope this might be helpful.

    • Source
      [Show abstract] [Hide abstract]
      ABSTRACT: This paper focuses on a comprehensive systematic review of international peer-reviewed journal articles in the field of family business internationalization for a period of 15 years. A total number of 103 articles were reviewed, published in 40 international journals, among which are Family Business Review, Journal of Business Venturing, Journal of International Business Studies, and etc. Our review indicates some important features of the evolution of the family business internationalization literature. First, studies become more interdisciplinary and they are dispersed in a wide range of journals. Second, internationalization of family small and medium-sized enterprises was arguably underexplored in the past, and yet studies on this topic experience a rapid growth in the new millennium (the peak is observed mostly in the last few years). Third, theories that are frequently used in the reviewed articles include international entrepreneurship; stage theory of internationalization; resources and capabilities; stewardship theory; agency theory, and etc. Fourth, reviewed articles, based on contradictory findings contribute to an on-going lively debate. In general, non-family enterprises outperform family enterprises and factors as family involvement in ownership and management are found to be rather restrictive than enabling internationalization. Yet, other factors such as external involvement in ownership and management are positively related to internationalization of family small and medium-sized enterprises. Keywords: internationalization, family business, small and medium-sized enterprises (SMEs), international entrepreneurship, ownership, management, governance, export, integrative systematic review
      Full-text · Article · Dec 2015
  • Edwin Escobar added an answer in DCM:
    7
    Has anyone had any sucess with a Dichloromethane substitute in a SPE wash step? If so, what did you use?

    I'm working on a T3/rT3 SPE extraction using an anion exchange SPE column. I have stumbled across DCM as a wash step in the literature, but if there is a non-halogenated alternative I'm not aware of, I could sure use the ideas. Thanks in advance!

    Edwin Escobar

    Thank you Aurea. I will definitely take this into account in searching for other alternatives. I am by no means done with the experiments and this helps a ton! I'll be sure to read on this in your paper. Thanks again to you both.

  • Prashanth k pr asked a question in Radiation:
    New
    Hi, my self prasanth ,

    Hi, my self prasanth , am designing elliptical patch antenna using Ansoft HFSS using microstrip feed of driven modal solution type. So I have a doubt about the distance of radiation radiation boundary .If I take radiation from boundaries of substrate i am getting less gain,but if i extend from boundary of substrate getting good gain. So please tell me which procedure is correct

  • Mohammad Tanzeem Raza added an answer in Entrepreneurial Economics:
    6
    Can anyone help me with the Qualitatitive Scale for meausring the performance of an Entrepreneur or VC-Backed Firm?

    Qualitative scale of measuring Entrepreneurial Performance of VC-Backed Firm

    Mohammad Tanzeem Raza

    Your suggestion are very much helpful in my research. Thanks for all your suggestions.

  • Parag Chatterjee added an answer in Electrical:
    1
    What are some of the services that a building provide?

    Water services, electrical services.. any other? Thank you in advance for your response.

    Parag Chatterjee

    Hi Risselle,

    Yeah building really provides a hell lot of services, LOL.

    Definitely the energy and water services come first, but there are other services like communication (telephones, Internet etc.), ease of access (elevators), security services (alarm systems, fire detection and protection) and safety from natural calamities (lightning, heavy rains, earthquakes) too.

    But with the advent of concepts like Internet of Things and Smart Home, the entire service domain of a building has been redefined. You can control the tint of your window glass right from your smartphone, you can check the CCTV footage of your bedroom while you are in college and many more.

    Cheers!

  • Deepa Eswara sarma asked a question in Nanoparticles:
    New
    How can we find the dispersivity of a nanoparticle in water? and also how is it related to drug loading efficiency?

    How can we know the samples are of different sizes or not? if they are of different size then what can we do to make them uniform?

  • Ng'ang'a Kibe added an answer in Groundwater:
    5
    I am having some difficulties in importing boreholes data into Groundwater Vistas. My boreholes are in UTM format. how do I add them to GW vistas?

    The boreholes are in UTM and I dont know how to import them. Also when I import a shapefile to GW vistas, it does not come to same position as my grid. Kindly help.

    Ng'ang'a Kibe

    Thanks alot, I managed to import the wells. I will get back to you incase am stuck.

  • Natalie S Brush asked a question in Haemophilus parasuis:
    New
    Is there is a suitable media for the transport of porcine nasal swabs that would allow me to extract and detect viral and bacterial pathogens via PCR?

    I will be taking nasal swabs from pigs to detect porcine reproductive and respiratory syndrome virus, influenza virus, actinobacillus pleuropneumoniae, mycoplasma hyopneumoniae and haemophilus parasuis via PCR.

    I need a suitable universal transport media that would allow me store the nasal swabs for up to 4 hours without compromising my ability to extract and detect viral and bacterial nucleic acid.

    Does anyone know of a universal transport media that could be made in-house?

  • Laurent Selles asked a question in Carbon:
    New
    Mesoporous carbon

    Does anyone here know if mesoporous carbon under the following intrinsic characteristics is obtainable:

    - Specific surface > 3'000 m2 per gram

    - Variable pore size: 2 to 50 nanometers

    An idea on price per ton would be welcome as well.

    Best,

    Laurent H. Selles

  • Talia Velasco-Hernandez asked a question in Oligomycins:
    New
    Has anyone seen no response of the cells after Oligomycin treatment in a Seahorse assay?

    I am running a Seahorse assay (Glyclolysis test) on cKIT+ cells from murine bone marrow. I attached the cells to the plate with CellTak and they seem to be not detached along the run. They respond to the addition of glucose and 2-DG but I have not seen any response to the Oligomycin addition. I have tried concentration from 0.5uM till 1uM (maximum described in the literature for this kind of cells) and I have tested different stocks of Oligomycin.

    Has anybody a possible explanation and solution? Should I go for higher concentrations?

  • Francesco Fanicchia added an answer in Superalloys:
    6
    I annealed Ni superalloy onto Alumina holders for three days and found that Al2O3 turned green due to Chromium Oxide. Any idea of how to remove it?

    The Ni superalloy, besides Ni contained mainly Cr, Co, Mo and Ti but after annealing the amount measured in the specimens is greatly decreased. The alumina sample holders and the inside of the chamber (also Al2O3) turned all green due to Cr2O3. Annealing happened at 1100°C in "supposed" vacuum, as it was reading 10^-6 Pa. I have tried already Nitric acid, water and mechanical abrasion (sand paper) but it does not help. Many Thanks

    Francesco Fanicchia

    Follow up.

    I have put the specimens in a atmosphere oven at 900° for 6 hrs and I observed no difference.

    It looks like manual removal is the only way at the moment.

    Francesco

  • Arvind Singh added an answer in Plant Taxonomy:
    5
    What plant is this?

    The plant is a small tree with imparipinnate compound, glabrous leaves. The bark is grey. Fruits are 4-loculed or by abortion of 2 ovules/seeds they produce 2 seeds. The plant is growing in Australia. 

    + 3 more attachments

    Arvind Singh

    Could be Diploglottis sp. of family Sapindaceae.

  • José Carlos Pereira added an answer in Sleep Medicine:
    4
    Does anyone know of anyone in the US or somewhere else who is effectively treating those with delayed sleep phase syndrome?

    There is a facebook group with almost 1500 people on it who have delayed sleep phase syndrome, and I've been told that most of them have no idea where to go for effective treatment.  I think many to most of these people have had sleep medicine doctors, but nothing they've suggested has helped.  Does anyone know of some experts with effective clinical treatment in this area where these patients are not being referred?  Thanks!

    José Carlos Pereira

    Dear Susan. As a Pediatrician i often have to adress delayed sleep phase (DSP) in some patients of mine, mainly adolescents; what is indeed a difficult task as in modern life many factors contribute to DSP. I noticed that if not all the family engages in an attempt to solve the prob, its solution is very difficult . When melatonin; changing lifestyle;  and appropriate exposition to light fails...; and  the  family is not compliant i advise these patients to change their school hours to the afternoon period  whenever this is possible. I do not believe that there are biological reasons for the DSP to occur, My assumption is that  this important sleep prob origins only from an erroneous lifistyle  of the patrient and his family. One point i advise a lot is that the DSP patient cannot have great disparities in the  timing to sleep between school days ( or working days) and weekend days. I inform the adolescent  that only one weekend a month is allowed for him/her to go out and so delaying the time to go to bed; and whenever this happens i advise the family to wake up the adolescent in the same hour that  him/her have to wake to go to school every day. Having two social jat lags every week is one of most serious prob. that impairs DSP patients in having a good life quality and to solve his/her sleep "social" problem.  It is always necessary to addres restless legs syndrome whenever it is the case, because this syndrome frequently ensues DSP as a commorbidity. Greetings from José Carlos Pereira Jr. 

  • Michael Buchanan added an answer in Qualitative Social Research:
    2
    Where would I find research on the following pre 2000 UK. "Is victimisation associated with heightened fear of crime?

    I am looking for find out social factor and a social profile of victimization of crime in the UK. I am using British Crime Survey data 2000. I was hoping to get a insight into the research being carried out then and now on this subject. Plus the relationship between crime victimization and the fear of crime.

    Many thanks

    Michael

    Michael Buchanan

    Thanks Sean,

    The first article is excellent.

    Kind regards

    Michael

  • Bo Huang added an answer in Climate Modeling:
    1
    Can anyone provide me papers and methodologies for dynamical downscaling of temperature and precipitaion data specifically for HKH region?

    I am trying to project future discharge scenarios for some basins in HKH region and have been doing some statistical downscaling of RCM data. And also looking for dynamical downscaling approaches for the same study. Your help is much appreciated if you can provide me some methodologies and relevant papers on the above mentioned topic.

    Bo Huang

    Hi Gunjan Silwal, 

    there is a paper about dynamical downscaling in CORDEX-East Asia. 

    Huang B, Polanski S, Cubasch U (2015) Assessment of precipitation climatology in an ensemble of CORDEX-East Asia regional climate simulations. Clim Res, 64, 141-158. 10.3354/cr01302

    Greetings,

    Bo

    • Source
      [Show abstract] [Hide abstract]
      ABSTRACT: An ensemble of regional climate simulations from the Co-ordinated Regional Downscaling Experiment in East Asia (CORDEX-East Asia) is analysed to evaluate the ability of 5 Regional Climate Models (RCMs) and their ensemble mean in reproducing the key features of present-day precipitation (1989-2008). We emphasised (i) an extreme rainfall event, (ii) seasonal climatology, (iii) annual cycles and inter-annual variability, and (iv) the monsoon characteristics. We highlighted four sub-monsoon regions such as the South Asian Summer Monsoon (SAS), the East Asian Summer Monsoon (EAS), the Western North Pacific tropical Monsoon (WNP), and the Australian-Maritime Continent Monsoon (AUSMC). We found that the RCMs show a reasonable performance to capture the extreme rainfall event in 1998. The RCMs simulate the seasonal mean, annual cycle and inter-annual variability acceptably. However, individual models exhibit significant biases in some sub-regions and seasons. Moreover, most of the RCMs significantly improve the precipitation, climate and monsoon characteristics over the Korean Peninsula, the Korea Strait and southern Japan. Based upon this performance study, we concluded that the present set of RCMs from CORDEX can be used to provide useful information on climate projections over East Asia.
      Full-text · Article · Jan 2015 · Climate Research
  • Alebachew Alemnew added an answer in Trust:
    10
    How can I measure the trust of staff ? How can I correlate this value with their performance ?

    How can I measure the trust of staff ? How can I correlate these  values with their performance ?

    Alebachew Alemnew
    The tool developed by Hoy and Tschannen-Moran (2003), Omnibus T scale has considered 5 key facets of trust as (Benevolence, reliability, competency, openness and honesty. For these five dimensions, they have also developed indicators as well.
  • Elaine Ammini Sabu asked a question in Reading:
    New
    Can anyone help me with the nitrous oxide calculation for GC values (area of peak) for mangrove sediments?

    i have been trying to find the N2O concentrations for mangrove sediments with a salinity of 35ppt and temperature 250C.  I used air for taking standard reading and i got the readings as area of peaks. But not able to find the calculations for getting the final concentration in nmol per gram of sediment.

  • Sílvio Manuel da Rocha Brito added an answer in Mobbing:
    1
    I'm working on the reverse mobbing also known as bottom-up mobbing. What are the quantitative researchs about this subject?

    Dear Colleagues,

    I'm working on the reverse mobbing also known as bottom-up mobbing.
    What are the quantitative researchs about this subject?
    I would be grateful If you share with me.

    Yours sincerely..

    Sílvio Manuel da Rocha Brito

    Dear H. Uysal,

    There are many studies about this. As you know this is a universal phenomena, any country have this kind of problems, so there are many studies. If you want some articles I can give you if you wish!

    Kind regards!

  • Stein Erik Lauritzen added an answer in Geology:
    4
    How to dissolve anhydrite, is it soluble in HCL?

    Gypsum is soluble in hot diluted HCl. How about anhydrite? is it soluble in 12 N hcl, diluted HCL? or need to use HNO3

    Stein Erik Lauritzen

    The solubility of calcium sulphate in water can be increased several times through the common ion effect, i.e. by addition of a soluble salt of a kation that has high affinity to sulphate, (forming an ion pair). For some analytical purposes, we have used pre- cleaned  magnesium nitrate solutions.  With "cleaning" we mean using ion exchange to remove the trace elements we are interested in (so that all comes from the gypsum/anhydrite). However, for most geochemical analyses, 1 M HNO3 has proven satisfactory. If pH is increased, gypsum will precipitate.

  • Eugenio Abela added an answer in Resting State fMRI:
    3
    What is a good way to detect and remove noise components after melodic ICA on single session resting state data?

    I am using FSL to perform resting state analysis, just past pre-processing, I realized that identifying noise components manually is not only time comsuming, but may not be 100% accurate. Are there better automated ways (or is manual check still the securest?) and which toolboxes work well? I read about ART and FIX... What is your experience? What would you recommend?

  • Antoni Sanz added an answer in Questionnaire:
    4
    Someone knows any questionnaire specifically aimed at assessing risk perception in highly-risky sports?

    I'm trying to design a study aimed at assessing risk percpetion in a smaple of climbing and/or via ferrata practitioners.

    Antoni Sanz

    Thank you very much for your repplies. I found your suggestions very useful for my research ;)

  • Ahmed Abdelraheem added an answer in HFSS:
    7
    What is the optimum height of a Floquet-Port over a periodic structure?

    In the process of simulating a periodic HIS, a Floquet-Port needs to be assigned at an appropriate height over the surface. How much is that height supposed to be? and how can I be so sure of the results if any small change in this height dramatically changes the results??

    Also, do I need to use PML?

    P.S.: I am using HFSS

    Ahmed Abdelraheem

    @Humberto

    I have tried changing the height through a parametric sweep, and still getting different high high-impedance frequency for each height. There must be a correct value !! Any suggestions??

    @Alexey

    The following tutorial is for EBG simulation using CST. This tutorial teaches how to extract the dispersion diagram for a periodic EBG structure. As far as I know "Dispersion diagram" the primary result you want to look at when dealing with EBG.

  • Konstantin Naumenko added an answer in Material Modeling:
    3
    Forward Euler scheme to solve a non-linear viscoelastic problem?

    Sig ij = Kijkl * epskl

    I want to solve the system of equations for strains using Forward Euler scheme. Can someone tell me how the Euler scheme works in this case?

    Konstantin Naumenko

    Hi Madhu Nanjipura Mahadevappa,

    I assume, you are going to solve a creep problem. Equations in your attachment give the components of the tangent stiffness tensor. In addition, you need to update creep strains (components of creep strain tensor). To this end you may apply the forward Euler method as follows

    creep strains(new time increment): creep strains(current time increment)+creep rates(current time increment)*time step size. 

  • Nicolas Brouilly added an answer in Plate Reader:
    1
    Which factors are most likely responsible for variability issues in a quantitative yeast two-hybrid assay?

    Hello,

    We are performing quantitative yeast-two hybrid assays in the L40 strain with pDS-bait and pACT2-prey constructs. We are assessing dimerisation of one domain of a protein of interest, comparing the strength of a WT/WT v. WT/mutant(s) interaction. All the mutant constructs are in pDS while the WT, which remains constant throughout, is in both pDS and pACT2. We know from previously well-established data that the single amino acid substitutions should significantly decrease the strength of dimerisation. However, after several repeats, we continue to obtain inconsistent and highly variable results despite no obvious experimental errors. Technically, the assay works consistently ie upon all repeats yeast grows successfully and positive lacz assay results are observed. Moreover, all colonies picked for additional overnight growth develop to the correct optical density, with the quantitative CPRG assay consistently showing a measurable colour change. When analysing the results, however, we are unable to replicate previously published trends. There appears to be no significant difference between WT and mutant dimerisation, with most mutants even trending towards a potentially increased strength of interaction. We have sequenced and re-prepped all plasmid constructs, unfortunately to no avail. It would be immensely helpful to hear suggestions from experts re potential problems which we might have overlooked. 

    Current ideas:

    1. Consistent cross-contamination of the DNA preps?

    2. Quality of the yeast?

    3. Plate reader issues?

    4. Catching the yeast at the wrong growth phase?

    Nicolas Brouilly

    Hi Simone,

    Have you considered using 3-AT (3-amino-1,2,4-triazol). It is a competitive inhibitor. Starting concentrations in the plates could be 5-15-30-60 mM.

    Even though you might also experience low reproducibility (because you add one more parameter), observing a concentration effect could help you to extract a trend.

    Hope that helps,

    Nico

    + 1 more attachment

  • Donald Culp added an answer in Tensile Strength:
    17
    How can i reduce the stress on a ultrasonic device?

    I am attempting to create a ultrasonic device which consist of a stepped horn connecting to a transducer and a blade using aluminium instead of the standard material (titanium). However, i am getting a stress of 790 Mpa and the tensile strength of aluminium 6061 is about 200-300 Mpa. Please let me know if anyone knows any ways of reducing stress in ultrasonic devices.

    Donald Culp

    You could eliminate the prismatic input section and just put the stud directly in the tapered section (which would then become the input section).

    Flexure resonances are very sensitive to thickness and length. If you can't change the blade's thickness then you can adjust the length (say by -5 mm to start) to see the effect. For each adjustment you should keep track of all flexure resonances within +/-5 kHz of the axial resonance since all of these flexure resonances will shift with the increased length. The idea is to make adjustments until two flexure resonances are equally spaced from the axial resonance. This will give the maximum frequency separation because any change in blade length will then push one or the other flexure resonances closer to the axial resonance. (In your case the flexure resonances will be primarily associated with the blade dimensions. None-the-less, these resonances will shift somewhat when the transducer is added. Therefore, very good frequency separation from the axial resonance is recommended.) At some point the blade might become too short for your application and you would need to stop. However, the flexure resonances could also be adjusted by lengthening the blade. Of course, after adjusting the blade length you would need to retune elsewhere. 
     
    Can you give more details of the food cutting application? I'm curious because your blade is quite thick compared to others that I have seen (although these were bar horns with the cutting edge on the face). What length of cut do you expect to need?

    Can you post an image of your latest results?

  • Ben F. Spencer added an answer in Graphene:
    1
    What can be the possible ways of increasing efficiency of solar cells using graphene?

    Graphene having excellent properties can be utiized for solar cells and thus efficiency of a solar cell can be increased.

    Ben F. Spencer

    There are several ways graphene could be implemented in photovoltaics, due to its transparent and high conductivity properties. There are many reviews online that are a good starting point. Researchers are looking at using graphene to replace oxide conducting layers such as ITO, as well for use in dye-sensitized solar cells, and even designing solar cells based mainly on graphene. With all emerging photovoltaic technologies, the key will be in reducing the cost per Watt of electricity, not just increasing the efficiency. E.g. some third generation solar cell technologies only need to have efficiencies > 12 % to be competitive since they are a lot cheaper to make than traditional Si solar cells.

    http://www.renewableenergyworld.com/articles/2015/06/strengthening-solar-cell-performance-with-graphene.html

    http://pubs.rsc.org/en/Content/ArticleLanding/2014/TA/c4ta01047g

  • Ricardo Álvarez-León added an answer in Crabs:
    1
    Could anyone help in identifying this crab (family or genus)?

    This Crab this crab was found in an estuarine ecosystem in Cartagena, Colombian Caribbean

    Ricardo Álvarez-León

    Parece un Aratus, pero habria que observarlo en detalle y con claves ver la especie

  • Michael Schmitt added an answer in Nanomaterials:
    2
    Does someone know a simple way to engraft a acrylate function to a parrafin wax ?

    Looking for a way to graft acrylate on parrafin wax to use it in uv curable resin.

  • Rami Sawahreh asked a question in Oil Extraction:
    New
    What can i talk in the introduction of bay oil extraction ?

    introduction   suggestions

  • Seyyedeh sepideh Taheri added an answer in Electrophoresis:
    2
    How can i simulate electrophoresis by comsol?

    I want to simulate electrophoresis with c4d detection by comsol but I don't know it. please help me.thank's

    Seyyedeh sepideh Taheri
    hello jules ,
    thank for your help.
    sepideh