What is suitable temperature at reaction mixture of lipase activity assay?

I use para nitrophenyl palmitate substrate with tris buffer ph 8... i read many temperature for Yellow color of para nitro phenol production.. 37 and 50 and 40 at water bath ... I confused as i...

04 February 2021 9,100 5 View

What is the relationship that determines the depth of the mechanical cultivator with the age or size of the weed For crops planted in lines?

the great depth of the cultivator may lead to passage under the roots without killing them and may give negative results to break up the soil below the roots, increasing their activity, especially...

03 February 2021 3,198 7 View

Does the subsoil have an effect on the spread of weeds whose roots are more than 35 cm deep?

For weeds whose roots deepen more than the level of subsoil, they may be affected by this layer, for example, determined by height and growth, as well as limited to flower production and seeds.

01 February 2021 1,940 4 View

Can I measure serum and not tissue succinate dehydrogenase?

Dear Colleagues I am interested in evaluating the concentration of SERUM succinate dehydrogenase in a certain type of cancer. I found an ELISA kit for it however, I can barely find any papers...

16 October 2020 547 1 View

Which unsupervised learning methods can be used to detect fake users?

In an online website, some users may create multiple fake users to promote (like/comment) on their own comments/posts. For example, in Instagram to make their comment be seen at the top of the...

12 August 2020 3,736 12 View

My melanoma cell line doesn't grow well suddenly, May i know the possible reasons for that?

I have 92-1 of melanoma cell line , when i thawed them they were totally normal , but after first passage , the cells begun not growing well and not totally attaching on the bottom of the flask...

30 June 2020 3,622 4 View

How to compare pre-trained models with traditional models in the field of NLP?

There are new models such as BERT that requires pre-training and fine-tuning. And there are the traditional models, such as DecisionTree and SVM, which requires us to extract features from the...

20 March 2020 7,784 2 View

Possible reason to change the color of carbon dots from greenish into blue after immobilization process?

Dear experts, Liquid carbon dots (CDs ) were synthesized with greenish color under UV-light. However, after mixing with PVA polymer, the color turned to blue with enhanced quantum yield (QY). what...

16 March 2020 5,304 4 View

Why to use acid or base for the development of fluorescent carbon dots?

Salam all. according to the reported work in the literature, some authors used strong acid (like refluxing with HNo3) in conjugation with carbon-based precursor, while others used base such as...

04 December 2019 5,476 3 View

Anyone can help me to explain this graph?

Based on response surface methodology (RSM) of the design experts software, two-dimension graph were obtained. The influence of two independent variables (X1X2) on the response (QY) is shown in...

05 May 2019 8,172 3 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

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01 March 2021 3,905 5 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

How long does it take to get a modeller(for homology modelling) license?

I submitted my e-mail address on modeller website to get a license. The problem is that, the site cannot process my school e-mail (ewhain.net). I submitted my Lab website and school name so that...

25 February 2021 9,054 3 View

How do I choose contrasts in SPM8?

I am learning how to use SPM for PET and PET-MR analysis, but I haven't found any great resources that explain how contrasts work. I have a series of PET images where our hypothesis argues that...

24 February 2021 1,534 2 View

Is it mandatory to specify Subjects Combinations in Generalized Linear Mixed Models (SPSS)?

Hi all, I have data with two levels: lets think of the classic example of students and schools. When running the analysis in SPSS and selecting the Random Effects, we can select (we can or we...

24 February 2021 7,379 4 View

Can I ask did any good platform or journals for learning the calcluation on the reference governors and command governor?

Recently I face some problems with the mathematical ( calculation) on the reference governor and command governor, so I need some help from you all to get which platform or journal can let me...

23 February 2021 7,746 2 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

Special issue on PLS-SEM in Mathematics. Are you interested?

21 February 2021 5,601 3 View