During performance test lot of bubbles are created inside tygon tube, any aspect that can I address to eliminate bubbles?

More Oscar Malacara's questions See All

Is it possible to improve the reforming section of the Haber-Bosch process without using air separation units?

A typical reforming section in a large-scale Haber-Bosch process (Figure 1) comprises two reactors. A mixture of methane (CH4) and steam (H2O) is fed into a primary reformer to produce syngas via...

01 August 2024 7,051 5 View

Is there any real advantage in co-electrolyzing CO2 and H2O in liquid phase to produce syngas versus using separated electrolysis of H2O and CO2?

Electrochemistry is a pathway to convert CO2 into valuable products such as CO. However, a potential side product in the cathode is H2. I wonder if it is possible to tune the composition of the...

12 May 2024 9,061 3 View

How to prepare aliquots of freezing medium (for PBMC)?

Hello everyone, I am working on a project where I receive daily samples to freeze at -80 °C. Specifically they are peripheral blood mononuclear cell (PBMC), until now I was using CryoStor® CS10,...

22 April 2024 3,905 6 View

Can pulsed electric fields be used to generate heat?

Pulsed electric field is considered a "non-thermal" method for food processing that involves the application of short high-voltage pulses to create pores in cell membranes. However, since I am not...

13 March 2024 2,624 6 View

¿El Sistema Político salvadoreño se puede calificar de izquierda, derecha o indefinido?

De acuerdo con los cambios o reformas económicas, políticas y sociales

12 March 2024 4,602 0 View

Discuss the impact of public debt on government finances in developing economies, focusing on South Africa?

an essay of 2000 words.

02 March 2024 1,932 4 View

Mutation found in the forward but not in the reverse sequence?

Hi! We are sequencing exon 5-6 from the BEST1 gene, we have multiple patients afected, with the explaining mutation, but in this cohort we found that in our forward sequences we can identify...

07 February 2024 2,284 5 View

Interested in sociohydrology?

Write me an email for infos on a postdoc position. [email protected]

05 February 2024 6,496 1 View

How to calculate the electric field in a capacitor?

The parallel plate capacitor of the figure comprises two metal electrodes separated by a dielectric material. Is the equation shown in the figure appropriate to calculate the electric field in the...

18 November 2023 712 2 View

Primers for STR´s?

Hi everyone and good morning! In our lab we want to make a sanger sequence opf the RPGR gene (ORF1/ NM_001034853.2) but is technically very dificult to make any PCR within that zones (it´s a...

27 September 2023 3,561 4 View

I have get this error when i calculated the geometrical optimization for prco3, it takes 12 hours until gives this message in the outputfile?

Fatal error in MPI_Allreduce: Other MPI error, error stack: MPI_Allreduce(1628)......: MPI_Allreduce(sbuf=000002459254A180, rbuf=000002459F86A140, count=4851, MPI_DOUBLE_COMPLEX, MPI_SUM,...

09 August 2024 7,615 1 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

What is the prepared reference material that can be used in inductively coupled plasma optical emission spectrometry (ICP-OES) to measure REE and U ?

What is the prepared reference material that can be used in the ICPE-9820 Shimadzu Japan instrument, which employs inductively coupled plasma optical emission spectrometry (ICP-OES) to measure...

06 August 2024 1,896 1 View

Project/Experimental assistance ？?

Do experiments on behalf of Our Business: Laboratory animal rearing Animal modeling Experimental animal behavior detection, image ultrasonic detection, electrophysiology platform Organoid...

05 August 2024 5,829 1 View

How effective is the Citi Bloc standard basket in enhancing the accuracy and comparability of international construction cost assessments?

Citi BLOC Standard Basket Definitions: A standardized unit representing a fixed basket of construction materials, labor, and equipment costs priced in various cities. Purpose: To create a common...

04 August 2024 8,997 1 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Inquiry on Maximum Nucleic Acid Volume for 2.5 mL Liposome Solution?

I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...

30 July 2024 6,420 1 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

May I know the exact Quartile of the journal- Advanced Engineering Materials (Wiley) for material science category?

In some data sources it has been grouped in Q1 and some shows it is Q2.

29 July 2024 4,227 2 View

Best Practices for Constructing and Maintaining Gravel Roads in Rural Areas?

Hello, I'm involved in a project focused on constructing and maintaining gravel roads in rural areas. We're particularly interested in ensuring durability and reducing maintenance costs over time....

29 July 2024 9,623 0 View

Carlos Contreras-Ortega

Dear Oscar: what type of test are you performing?

Keld West

We add e few % alcohol and one drop of Triton X to our rinsing solution in the AAS to avoid bubbles.

Oscar: I guess you already have the answer from Keld West. I wanted to know if you were performing experiments under high vacuum wich was my experience. Good luck