Hey, how is it possible to detect whether a change in the magnitude of the coeffcient of the independent varibale is significant?

How can I differentiate insignificant from significant changes in Magnitude of the coefficient of the independent variable after a Control variable is included in the Regression. To put it...

09 December 2020 8,317 6 View

What is the easiest and cheapest way to quantify XY/XX ratio of cells in a mixed population of human cultured cell lines?

I have an XY cell line I am measuring telomere length on, and I am using an XX cell line (with abnormally long telomeres) as an internal control. I would like to identify each separately, but that...

26 August 2019 1,290 1 View

Regression analysis - How do I check for linearity and adress multicollinearity with ordinal/categorical independent variables?

Hi Im currently doing a working with multiple regression in STATA and have a question about linearity and Linearity I'm currently going through the regression assumptions and have issues...

07 December 2018 152 6 View

Does anyone know an easy and simple method of detecting trichloroacetic acid (TCA) and/or trifluoroacetic acid (TFA) in solution?

I am investigating electrokinetic migration of these acids across a supported liquid membrane (SLM), and need to determine their presence (if any) in the aqueous acceptor phase. I am thinking...

17 October 2018 9,594 4 View

How do you standardize and enumerate qPCR reactions with different volumes?

Hey, We are testing a qPCR instrument that requires fairly large reactions volumes. To do some comparative studies, we simply used smaller reactions volumes when running comparative samples on a...

14 October 2018 8,248 8 View

How can this formula output dislocation density?

02 August 2015 2,345 4 View

Using GLM (or OLS) with a categorical predictor variable (15 countries), how do I compare with the grand mean instead of using a reference category?

I want each regression coefficient to represent (each country's) deviation from the grand mean, instead of deviation from one category (country), before and after introducing control variables....

13 August 2014 9,047 18 View

Is it possible to do Flowcytometry on frozen PBMCs from Ficoll Paque gradient - CD4+/CC7- and CD8+/CCR7- ?

Dear all I'm planning a small FC study. I want to use peripheral blood and use a density gradient to seperate into MCs (Ficoll Paque Plus). My plan was to freeze down these PBMCs at -80...

17 June 2012 381 12 View

Is there an ELISA kit for inflammatory cytokines that work on tissue homeogenates (RIPA buffer)?

I'm thinking about using an ELISA kit to measure the levels of inflammatory cytokines (e.g. TNF-alpha, IL-10, etc). We have small biopsy material from humans and wants to homeogenize with a RIPA...

17 June 2012 2,447 2 View

Pepsin Storage

Hello- I have left 100x pepsin solution at 4 degrees for a couple of months. Now I realize it should have been in the -20 degree. Has the pepsin gone bad? also, is it ok to store pepsin at that...

19 August 2010 1,633 1 View

How UAV or drone can be beneficial to better estimate crop yield?

As we know, crop yield estimation has been done traditionally with farmer's expert knowledge, deductive sampling in representative areas, and remote sensing with satellite imagery. Farmer's Expert...

01 March 2021 3,468 3 View

Are there methods for automatically mapping floodplains, fans and terraces?

I want to map these river geoforms with as little subjectivity as possible. I have a high resolution DEM generated by drone data.

22 February 2021 7,800 3 View

Are cloud points able to identify tree species?

Hello Dears My goal is to classify dense forest tree species using drone images. Is it possible to classify dense cloud points? If yes, in what way and in what software? Thankful

15 February 2021 3,475 3 View

What is the classification of tree species by texture analysis technique on drone images?

Hi My goal is to distinguish forest tree species (in dense forests) with drone images. I did not get acceptable results using spectral features. Because the pictures were taken in the fall and the...

07 January 2021 7,494 3 View

Are drones following the e-Auto industry technological trajectory or are they following its own?

* Are drones following the e-Auto industry technological trajectory or it is following its own? * Will drones diffuse faster than electrical vehicles? * Will it depend on the application?, What...

29 December 2020 7,379 3 View

How to classify a base object with drone image?

Hello beloveds. I am classifying dense deciduous trees with eCognition software. In fact, it is the separation of tree species with drone images. The image has a near infrared band, red, red...

29 December 2020 5,900 2 View

How to pre-process aerial images?

I am working on a project monitoring crop field health. For this purpose, I am preparing my dataset using drone video. I have converted it into keyframes. Now I want to pre-process these aerial...

25 December 2020 7,529 5 View

Drones used to study canopy species?

Has anyone used a drone equipped with a microphone/camera to study the acoustic behavior of canopy species of frogs and/or birds?

21 December 2020 7,664 17 View

Do I need to correct Sentinel images (_MSIL2A products)?

Hi guys. I have some questions for you. I've seeing a lot of people using sentinel 2A images without atmospheric correction because they say _MSIL2A products are already corrected. However,...

07 December 2020 2,118 2 View

What is the best flight altitude for a drone in the forest?

My goal is to use the short-range remote sensing technique (drone) to study tree species in deciduous forests. Overlap and flight altitude play a key role in this. Do you have the right overlap...

02 December 2020 2,442 4 View