What is considered a good binding affinity energy value between macromolecules?

Hi everyone, Does exist any threshold for binding affinity value between macromolecules? E.g. Any value lower than -5.0 Kcal/Mol..... How to determine that the binding affinity among different...

22 September 2020 4,329 3 View

Means and SDs for proportions - How to proceed when we need the inverse data?

Hello all, I have a tricky situation here. I need a % and SDs of drug-negative urine tests across a methamphetamine study for a meta-analysis. However, the study brings the % and SDs of...

30 March 2020 9,494 3 View

Meta-analysis - what if we have two treatment groups?

Dear all, I'm writing a meta-analysis about treatment of stimulants use disorders. I am pooling data from RCTs using a certain class of medications. However, some of the described studies used...

03 July 2019 5,014 3 View

How do I get RRRs rather than ORs from Multinomial Regression on SAS?

I have run a proc surveylogistic model using link=glogit on sas. The idea is to run a multinomial regression model. However, whenever I run the model with it covariates, SAS provides an output...

18 January 2019 8,977 6 View

What is the best way to combine/merge/concat datasets of different size?

I want to know if have some way to combine datasets with a different number of instances into one so that the final dataset is not biased to larger datasets. For instance: we have the dataset A,...

26 September 2017 9,640 4 View

Can anyone indicate me protocols, questionnaires and tree decisions regarding environmental risk assessment of microorganisms?

environmental risk assessment quantitative risk assessment microbial risk assessment ecologial risk assessment enviromental risk assessment of microorganisms

19 March 2017 2,056 3 View

Is there any way to obtain the old 1980's software called Javelin?

Built by the creators of Visicalc and a competitor of spreadsheet software

03 February 2016 4,829 3 View

How can I dissolve commercially available LDL lyophilised powder?

I have tried PBS (pH 7.4), tris-glycine buffer (7.4) and I still can't get a full dissolution of LDL.

17 January 2016 3,820 3 View

What's the current state-of-art ensemble predictors combination?

13 October 2015 1,311 3 View

Protein with very low expression. Any suggestions?

I intend to monitor post-translationally modifications on a protein with very low expression in yeast. I have already upscaled cell culture volume and done immunoprecipitation with considerable...

01 July 2014 2,105 4 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

Can Ethovision store the generated data and video recordings directly to NAS system?

The size of data generated by Ethovision is huge. Having NAS system for data storage seems to be a good option, I am wondering whether Ethovision can directly store the data to the NAS system...

27 February 2021 6,350 2 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View