Can I omit a factor level, which produced only 0's as a response, from a binomial generalized linear model?

I am analyzing fruit-set data (a binary response, so 1's and 0's only) from a pollination experiment. Five treatments were applied to flowers, one of which (pollinator exclusion) yielded no...

19 February 2020 5,749 4 View

In the R package 'taxize', is there a way to constrain the query function 'tax_name' to a specific taxonomic group?

I often work with plant species check lists and have been using the 'taxize' R package to programmatically compile information on higher taxonomic ranks (above-genus) in these lists. To do this, I...

08 September 2019 297 3 View

If my insulin has a white precipitate in it, will it still work?

30 October 2018 7,116 3 View

No title

15 September 2018 7,459 7 View

Help! - How do I enterpret data from PROCESS Model 5 in SPSS?

Hey there! I'm currently writing my BSc thesis, and I really need some help with SPSS and its interpretation. I'm doing research into the effects of gamification (dichotomy) on learning, with...

01 May 2018 3,203 3 View

Isolating mucous layers in frozen rat colon?

I have 0.5x0.5cm of rat colon sections frozen in RNAlater, the anatomy of the sections are barely discernible if at all and they are somewhat shrunken. Is it still possible to isolate the mucous...

18 August 2013 9,477 3 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 View

No title

03 March 2021 5,360 2 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Do anyone here can help us in the field of molecular docking?

We have synthesized various metal complexes with different environment around the metals. Now to see the application of synthesized complexes we need this study also. we are also interested in...

01 March 2021 1,899 2 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 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