Why do my Kf values of the Freundlich isotherm differ when using different initial unities of concentration?

23 October 2019 5,170 2 View

What nucleation agents lower the thermal conductivity of expandable polystyrene (better cell structure)?

What additives can be added to styrene during suspension polymerization to get a better cell structure during foaming, thus lowering the thermal conductivity (better insulation)?

11 October 2017 8,824 1 View

What are the added benefits of video consultation in a private dietitian practice?

14 December 2015 6,928 2 View

Reliability Analysis SPSS: corrected item-total correlations above 0.7. Keep or throw out analysis?

I am running a few reliability analyses on data regarding advertisements. The majority of the scales have items with corrected item-total correlations above 0.7. I was taught that items with...

22 November 2015 9,403 4 View

During RNA extraction (using RNeasy kit), is an on-column Dnase treatment useful when you also performe DNAse treatment (Invitrogen) afterwards?

To be sure to get rid of all DNA I usually do both, but some say that it is useless, because one of the treatments should already remove everything. Still I think that to be sure its better to...

09 April 2015 1,245 4 View

Are there any tips for obtaining clear images of cell files in each zone of Arabidopsis roots?

Are there any tips for obtaining clear images (20x) of cell files in each zone of Arabidopsis roots? I normally fix them first in 96% ethanol and mount them in chloral hydrate. However, due to the...

12 October 2014 3,365 7 View

Can anyone suggest a tool which allows the follow-up of the early development of Arabidopsis roots whilst allowing short term treatments?

Does anyone have an idea of a kind of tool which allows the follow-up of the early development of Arabidopsis roots whilst being able to submit short term treatments? For example by changing the...

01 October 2014 9,302 8 View

Looking for pharmacokinetics software

Can anyone help me out ? Which PK software is available for free download from internet and is reliable too?

17 September 2012 2,405 34 View

Validation concepts

Is it necessary to revise common use of concepts in method validation as discussed by Olsson et al. in an editorial paper recently published ?...

12 August 2012 2,956 12 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Is it possible that Cancer cells could survive in heparinized blood for 48 hours?

Hi everyone, I am just wondering if we incubated 200 microliter of whole blood with 50 microliter of cancer cells(1bout 5000cells) do you think that cancer would survive for 48 hours?

23 February 2021 3,840 3 View

How to examine multicolineairty in backwards regression with binary variables?

I did a backwards regression with various binary variables, but some of the binary variables are negatively correlated with the outcome, which would make no sense cause the correlation univariate...

21 February 2021 4,392 3 View

Are there SDMs that can take in percentage data?

Hi everyone, I am wondering if anyone knows of a species distribution model that can take in percentage data (i.e. presence data with prevalence values attached to them)? The dataset I have...

18 February 2021 7,312 3 View

How to perform Kaplan-meier survival analysis in SPSS?

Hi everyone, This is my first time of attempting to run survival analysis. I have a data on patients with End-stage Kidney Diseases (ESKD). I would want to run survival probability by treatment...

16 February 2021 2,647 3 View

How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

What are the popular techniques for pre-processing measurement data in Smart Grid/Power System?

The data collected from various measurement devices often contains erroneous values - such as noise, missing values, etc. What are the popular techniques for pre-processing measurement data in...

14 February 2021 4,642 2 View

Any model suggestion for the Electronic Health Records dataset ?

I have sequentially measured the time-series Electronic Health Record patient dataset. This is 7 years of research and each patient's blood pressure, Hba1c, LDL, Hb, Baseline Age,...were measured...

09 February 2021 4,933 8 View