Hello, has anybody comes across a brown looking aspergillus colony on PDA ?

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Absorption coefficient of methane?

Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?

06 August 2024 980 5 View

How are Large Models Exploring and Outputting Knowledge Understanding in Specific Content Areas, and What Does Academic Research Say About It?

Hello everyone！ I am currently exploring the performance of large models in understanding knowledge in specific domains, and attempting to construct a knowledge framework similar to what...

05 August 2024 5,729 2 View

Regarding a model for simulating battery charge and discharge, what do you consider to be high fidelity?

Regarding a model for simulating battery charge and discharge, what do you consider to be high fidelity? What is the acceptable percentage of error (regardless of the metric)? Could you suggest...

03 August 2024 5,358 0 View

How do i get an account to upload my published papers?

need to open an account to upload my published papers

01 August 2024 9,255 1 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

What is the best protocol for freezing the rat brain in preparation for protein detection by Elisa ?

What is the best way to freeze the rat brain - liquid nitrogen, Dry ice , isopentane - after isolation for later protein investigation by Elisa?

01 August 2024 1,722 1 View

Is artifacts in XPS possible to build high deviation in binding energy larger than 5 eV??

Hello. Thanks for your consideration to see my question. Recently, I conducted XPS anaylsis of g-CN that is prepared from thermal polycondensation of DCDA, so-called conventional bulk-g-CN,...

30 July 2024 9,824 2 View

Which statistical test should we use?

N=6 Comparing pre and post test likert scale responses. Participants are mix of practicing & preservice teachers.

30 July 2024 7,233 4 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

What is the best way to drop a plasmid?

Please address the best way to drop a plasmid. Background: I have a "bait" plasmid resistant to kanamycin and a "prey" plasmid resistant to carbenicillin. After many rounds of streaking on...

25 July 2024 2,532 3 View

Pink bacterial colonies?

I am cloning an overexpression plasmid with my protein of interest tagged with mScarlet. After transforming my ligated product into DH5α bacteria and plating on LB agar, I noticed colonies with a...

22 July 2024 5,953 6 View

Help me to identify these fungal slides?

These fungal slides are isolated from cultured Bread mold on PDA media and smear is treated with Lacto phenol Blue dye ..

13 July 2024 9,701 1 View

My rosetta strain has chloramp resistance and i am transforming my plasmid with amp resistance but not getting colonies on chloramp/amp LB plates?

I have done the same procedure with BL21 and pLysE but i got colonies but multiple times on rosetta i did but not getting. can anyone explain what would have gone wrong?

12 July 2024 9,904 1 View

Has anyone calculated the effective concentration at 50% (EC50) value of different fungicides for the fungus Tilletia horrida?

How can we measure their colony diameter?

12 July 2024 7,027 0 View

I have constucted a plasmid vector from puc19 with no antibiotic and lacz gene. The problem is screening for transformed cells. Any suggestions?

Get too many colonies, which are mostly non-transformants when tested by colony PCR

11 July 2024 6,775 3 View

I am not getting proper colonies while ligating one of fragments in my vector the colonies seems to be normal but in light it seems lysed any reason?

I am working on cloning of a gene fragment inside my vector everything we tried to do correctly like making insert and vector with utmost care but after ligation the morphology of colonies seems...

11 July 2024 9,010 3 View

Can someone provide any tips for cell quantification on Fiji, ImageJ?

Hi. I have brightfield images of stem cells. I need to count the total number of cells/image. Some cells are individual and some cells are in colonies. Using average cross-sectional area of...

05 July 2024 4,197 1 View

Cloning restrction digestion needed before sequencing?

Hello, recently i am an issue swith cloning where I am using the subclone method to insert my gene length is 1.5kb and my vector(pMAL-c6T) is 5kb I got the colonies which i screened through the...

04 July 2024 7,977 2 View

Why I am unable to get the expected insert at the cloning site?

I am trying to clone a gRNA (23 bases) into the Crispr cas9 pDirect23A vector by using restriction enzyme cloning. I have performed a complete experiment, starting with plasmid isolation,...

02 July 2024 5,448 2 View