Which are the journals for free paper publication?

A bunch of flower for everybody. I would like to ask about the list of journals which we can publish our paper for free. Thanks in advance. Sincerely Walid

25 February 2021 9,790 3 View

C-4 I cervical cancer cell line tissue culture protocol?

Hi there! My lab has been brought an array of C-4 I cell line. The cells did not succeed in attaching to the bottom of the flask and remained floating in the media. Although we followed the...

04 February 2021 10,018 5 View

When we regulate by tricolor light signals in VISSIM, should we make all the conflict zones inactive?

hi everyone, I have developed a simulation of a roundabout with a fixed time regulation, the lines of traffic lights in the roundabout are for vehicle storage. my question is: when we regulate by...

16 December 2020 1,923 3 View

Need help in vissim VisVap ? pedCrossing ?

Hello everyone, hope you are doing well. I made a simple traffic actuated control logic using VisVAP Stage 1 is for Vehicle Stage 2 is for Ped the compilation in VisVap run with success, but...

07 December 2020 553 3 View

Shall I use dropout or not in my case?

24 October 2020 9,262 7 View

Which universities give scholarships to international students with full tuition ?

There are many universities that have excellent scholarship opportunities for international students.

21 September 2020 3,391 4 View

Compound identification probleme?

good morning, I found some difficulties to identify a compound extracted from a medicinal plant and analyzed using LC-MS/MS. I can't find the compound name in databases peaks (m/z) and intensity...

15 July 2020 5,669 3 View

Which one is better for use as a hand sanitizer, ethyl alcohol or isopropyl alcohol, and why ???

According to the characteristics of each

21 March 2020 307 8 View

Why we got more than one repeat for each primer used in NGS applied for DNA sequencing from each sample of date palm tree ?

Our project objective is to investigate the genetic diversity of Palestinian date palm, cultivars. 6 primers were ordered, these primers were designed specifically for NGS analysis. DNA was...

06 February 2020 695 2 View

Why must deep-cycle batteries be used in solar power systems?

Two 12 V, 250 Ah batteries are connected in series and then connected in parallel with two more series-connected batteries of the same type. What is the total output voltage and Ah rating of the...

02 February 2020 1,821 3 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

How to prepare electrolyte of NaClO4 salt for Na-ion battery? Any problem with this salt?

Hello, I am trying to make anode for Na-ion batteries. I have no experience with preparation of the electrolyte for any batteries. NaClO4 salt are available and I am planning to use EC:PC as...

21 February 2021 8,132 1 View

By which mechanism does potassium hyrdoxide works as an activator in the preparation of activated carbon?

Activated carbon is prepared from biomass using KOH as the activating agent. What is the possible reaction between KOH and the biomass?

14 February 2021 8,095 4 View

Does any one have experience with Autoclavable cell culture media (RPMI 1640/DMEM)? Does it work well?

12 February 2021 2,958 1 View

How to determinate of molecular structure of salt into the liquid?

I need to determine the open formula of our complex, presumably consisting of sodium tungstate Na2WO4 and aluminum sulfate Al2 (SO4) 3. Our problem is that with an increase in the concentration...

11 February 2021 5,821 1 View

How do I change g/l into mM for bacto agar. I am trying to get the millimolar content of sodium and chloride percentage in bacto agar. How do I do it?

I am doing a salt tolerance-related experiment and for that I need to relate my salt levels to that in bacto agar. I don't want my salt concentrations to increase due to already salt content...

09 February 2021 4,158 1 View

Why does sodium metabisulfite generate turbidity when mixing with sodium hydroxide?

When I tried to mix a sodium metabisulfite solution with sodium hydroxide solution, the mixture solution quickly became turbid. Before mixing both were clear solutions. Please help explain the...

03 February 2021 8,075 2 View

I want to extract engine oil from a soil sample,please how much amount of anhydrous sodium sulphate am i going to add to 10kg soil?

Engine oil extraction from contaminated soil,10kg of contaminated soil+20ml of dicholoromethane+? of anhydrous sulphate

01 February 2021 9,509 1 View

Working with insect primary cells in cell medium and in saline solution?

I work with insect primary cells, which I let grow in TC100 insect medium. For fluorescence measurements I have to discard medium (because of its fluorescence properties) and give a saline...

28 January 2021 3,867 1 View

How to change medium of a protein or peptide mixture?

Hi everyone! I am purifying a peptide from a mixture of proteins. The peptide (3 kDA) is in a solution containing a high concentration of urea and imidazole. I would like to be able to change the...

27 January 2021 4,055 4 View