SPSS - Merging files by ID numbers that contain letters?

Hi, I'm trying to merge files from a data base of 20 files, each containing about 4000 subjects. Unfortunately the ID numbers are actually a combination of numbers and letters (e.g., b1458219)....

15 February 2021 5,833 3 View

What are your opinions on Small Software as a Service (Saas) Sustainability?

Hello, I am conducting a research survey for my dissertation to compare academicians' and practitioners' opinions on Small Software as a Service Sustainability). Would you kindly participate in...

19 January 2021 6,591 2 View

What species (or genus even) of crab is this (bivalve using hermit type)?

Two weeks ago I found a peculiar crab in the intertidal zone in SW Florida. when found, the crab was not utilizing a shell. It was similar shaped to porcelain crabs found in our area, but with...

17 January 2021 1,620 4 View

Book Chapter- Are you interested?

Looking for contributors to write a chapter for my new book: "Managerial School Leadership: New Skills for the 21st Century."

03 January 2021 2,070 4 View

How do I do a Meta analysis with comparisons to normative data rather than to a control group?

I have continuous measures (n, mean, standard deviation) and counts (n, proportions) that I would like to analyze using a meta analysis. However, rather than comparing these studies to a control...

15 December 2020 520 3 View

Can anyone give me tips for using SolidWorks Flow Simulation for analysis of miscible gases?

Specifically, I have a chimney that is emitting smoke and nearby is an inlet duct that is drawing air for cooling a certain device. I need to know the percentage of smoke (contaminated air) that...

13 December 2020 5,589 2 View

How to empirically approach Responsible leadership?

05 November 2020 8,021 5 View

What is the best pH to grow Lactobacillus rhamnosus?

Hi all, I'm doing some research in the proteins secreted by L rhamnosus and I've been trying to optimise the fermentation conditions to maximise production of these proteins. Without pH control...

08 October 2020 4,647 6 View

Why won't my Perkin-Elmer Clarus-500 GC save my data?

Greetings. Our lab has a Perkin-Elmer Clarus 500 GC equipped with an autosampler and an electron capture detector (ECD). We run the instrument using the TotalChrom software (also called TCNav)....

22 September 2020 6,337 2 View

How to Perform Feature Selection with Multilevel Encoded Categorical Variables?

I'm attempting to do feature selection on the variables on my dataset, but unfortunately the overwhelming majority of them are categorical. Currently they've all been encoded into binary...

29 July 2020 7,581 3 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

Do I need to introduce HFD to ob/ob mice to obtain a T2DM model?

I am planning to work on T2 diabetic animals and check the efficacy of probiotics. My initial plan is to fed B6 animals with HFD for a while. But now, I have the chance to work on ob/ob mice. My...

18 February 2021 6,896 3 View

2D wavelet transform?

Dear all I have a 2-dimensional mode shape of one concrete beam and I put the data of mode shape in a matrix (69*3) which the first column in the matrix is x coordination of my beam and the second...

10 February 2021 3,301 3 View

How to model Type 1 collagen structure for finite element analysis ?

I have started a project in which stress distribution in Type 1-collagen scaffold is to be modelled. I am thinking of using finite element analysis to model the structure and the loading...

07 February 2021 5,487 3 View

After cutting bands having low molecular weight peptides obtained from SDS-PAGE,is it possible to elute these peptide(s) without digesting in trypsin?

Basically, I want to get the sequence of peptides. I assume, digesting these peptides from each band may give me a different sequence than the original through LC-MS analysis. If digestion doesn't...

30 January 2021 5,482 3 View

How seniors face covid 19 without fear?

Seniors in the world with diabetics and hypertension and heart diseases are millions ,and they are facing covid.therefore we should give them advices and precausions to face covid 19,this...

26 January 2021 8,349 4 View