Can medicinal plants really play an inherent rule in the COVID-19 tackle?

Numerous scientific reports cited plant extracts with potential antiviral activity and even anti-COVID-19? Why these findings are neglected? I remember very well the warning released by the WHO to...

17 February 2021 2,141 9 View

When i made an Autotune on GC-MS to check the apparatus, it's not continue the process and there a problem in Mass Filter Electronics?

Dear Connections, I hope you are doing well when I made an Autotune on GC-MS to check the apparatus, it does not continue the process, and there a problem in the mass Filter Electronics as shown...

10 October 2020 8,131 3 View

Does anyone know what is an appropriate statistical analysis of drug release studies?

I am measuring the drug release of a few drug-eluting implants in dissolution medium in different time intervals. All the measurements are in triplicates. Would ANOVA or TTEST is an appropriate...

20 September 2020 8,183 5 View

What is the proper solvent which used in liquid detergent to make it soluble?

Good afternoon everyone, I hope you are doing well I had several samples of liquid detergent I wanna to soluble it with a solvent. I tried with both of ( water, Ethyl alc., Parrafin Oil, DPG,...

05 August 2020 8,664 3 View

What is the best parameters in GC-MS for DB-WAX (60m*0.250mm*0.25microm) in the fragrances field?

Hi everyone, I hope you are well and stay safe. I am an operator for GC-MS instrumental and my company replace the column with another new one which called DB-WAX (60m*0.250mm*0.25microm). A...

14 June 2020 4,440 3 View

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Under the conditions of the Corona virus, most countries tended to use the method of distance education, using various methods, including: e-learning platforms, and social media. It is true that...

10 April 2020 7,181 3 View

IS That okay if i injection ETOH to GC-MS?

I wanna to injection sample which contain only ethyl alcohol is that okay or not?

06 April 2020 9,164 4 View

Could car engine oil be an apropriate replace for freeze dryer pump oil?

We just got a new freeze dryer (Biobase) but unfortunately the machine arrived without pump oil, so could any machine/ car oil be used as a substitute? if not could you pls suggest any other type...

06 February 2020 167 3 View

I need to contact some "Full professors" interested in antibacterial potential of medicinal plants, could you please suggest me names and emails ?

I am an associate professor, I am suffering from a lack of expert persons under the title: "Full professor" in the field of antibacterial potential of medicinal plants. I should be most grateful...

28 December 2019 9,919 5 View

What's the effects of the wet season and dry season on biological soil crusts specially algae (Cyanobacteria and green algae)?

I work the research about stabilization of soil by Biological soil crust especially algae (Cyanobacteria and green algae) Could anyone please help me about this topic soil stabilization using...

17 December 2019 8,682 3 View

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23 February 2021 4,014 3 View

Is ANSYS Fluent good for simulation of a three phase reactor(stusy of its hydrodynamics or mass transfer...)?

Hello everybody, I would like to simulate a three phase reactor and study its hydrodynamics. I would like to know which type of software is better? I have a good command of ANSYS Fluent and I am...

10 February 2021 4,303 3 View

How can you attach polyurethane devices on glass slides?

I am making microfluidic devices made of polyurethane. The problem I am facing is that I am unable to attach these devices to glass slide even after plasma treatment (air plasma). Some of the...

28 January 2021 5,194 2 View

How do I dissolve a TPU (Texin RxT85A) in THF?

I want to make a 6% solution of Texin RxT85A in THF. I weighed the necessary amount of Texin resin and mixed at room temperature with THF with the help of a wooden stick, this did not work at all....

18 January 2021 9,080 3 View

Is there an alternative, more ecological solvent for shape memory polyurethane other than N, N-dimethylformamide (DMF) ?

As DMF creates problems for environmental aspects, we are looking for an alternative solvent for potential commercial end use applications of SMPU.

25 November 2020 8,728 3 View

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When producing a recombinant protein, harvested E. coli cells are normally refrigerated for 12-24 hours before homogenization to ensure protein inactivation due to foaming does not occur....

16 October 2020 7,373 0 View

How do you extract DNA from buccal swabs submerged in 70% ethanol using Qiagen DNeasy Blood and Tissue Kit?

Hi, I collected buccal swabs (cotton and foam) from nestlings and adult birds and stored the swabs in 70% ethanol. There are few different protocols on the web but I am wondering if anyone has a...

11 October 2020 6,103 3 View

What does over foaming correspond to in E.coli fed-batch fermentation?! How does foaming relate to cells metabolic status?

I'm currently experiencing overfoaming in my E.coli culture. My cells are used to produce a recombinant protein. The basic cell strain is BL-21 DE3. After changing my carbon source brand i am...

06 October 2020 3,946 3 View

What is the influence of the mold release agent on sound absorption properties of polyurethane foam ?

I'm an intern in a big company which makes flexible polyurehane foam for the automotive sector and I'm working on sound absorption properties of PU foam. I'm not chemist so I'm trying to improve...

23 September 2020 3,765 4 View

Which damage criteria should be used for nonlinear viscoelastic behavior?

Hello, I am building a material model for a nonlinear viscoelastic polymer in ABAQUS. For the beginning I just want to simulate an uniaxial tensile test. But now I want to know which damage...

13 September 2020 6,606 4 View