Where to buy microplastics?

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Energy consumption before and after energy efficiency?

I need numbers relating to works already completed, possibly hotels or large structures.

21 April 2024 2,675 1 View

Mechanical model of liquid inertial waves?

I am trying to find in this volume: Fluid Transients, 1994: Presented at 1994 International Mechanical Engineering Congress and Exposition, Chicago, Illinois, November 6-11, 1994 The following...

25 February 2024 7,555 0 View

Our "Self" is a simple mental construct/illusion: what are the best references for this?

I want to claim in an article that our Self is a simple and unstable mental representation and not something transcending the neural computation (e.g. a Soul) as it can appear to us. What are the...

21 March 2023 9,416 4 View

Refinery gas analyzer has a double oxygen peak, how to solve this problem?

Hello everyon! I am using an Agilent 7890 based refinery gas analyzer, and I found a strange phenomeno. If I analyse sample with lo concentration of oxygen (our CRM gas is 0,5 V/V%) the oxygen...

21 July 2021 2,436 2 View

Does the pre-synaptic neuron location in a cortical map influences the spatial position of its synapses in the dendrite of the downstream neuron?

Are functional maps in the cortex used by the brain to carry out computations or are they just a byproduct of wiring minimization? A key element to answer this question is to know if, when...

26 January 2021 1,426 8 View

Is there a universal standard in manning friction values for land cover or the values need to be adjusted to the study area over again ?

I see huge discrepancy between researchers (difference for the same class is somewhere up to 0.2). What determines the choice of the appropriate value ? What is the role of spatial resolution of...

11 January 2021 4,015 2 View

Is it always better to use friction values in inundation modeling, even when we have high-resolution DEM, where rough surface changes are detailed?

I am aware of computational costs while working with high resolution data, so this question is more of hypotetical nature and is related to the relevance of friction parameter in inundation...

23 June 2020 2,373 2 View

How to produce and use multi-resolution grid (a mixture of high and coarse resolution on the same raster image) in ArcGIS or any GIS software ?

It seems impossible since most of analyses are based on 3x3 cell neighborhood but I would like to hear your experiences. I know that some hydrodinamical models like TELEMAC are able to perform...

18 May 2020 6,387 7 View

Which internal standard should we use in our lactic acid assay?

Hi, We are trying to measure the concentration of lactic acid present in the cervicovaginal samples of pig-tail macaques. Samples were obtained by swabbing the vaginal and cervical tracts....

23 January 2020 9,403 0 View

Do you know visual stimuli in which the pop-out of an object-shape can be controlled by a priming cue?

I am looking for visual stimuli that produce a similar effect than the well know “Dalmatian dog illusion” (see Figure attached). If you look briefly at the Dalmatian dog illusion for the first...

03 August 2019 7,844 6 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

How to prepare the nanoparticle treated fungal sample for Environmental SEM analysis?

A fungal strain was treated with nanoparticles. We want to do an environmental SEM analysis. So could anyone share your views on preparing the sample? Thank you.

07 August 2024 5,307 1 View

How to quantify polystyrene microplastic (8 micron) bioaccumulation in fish tissue?

"I have treated adult zebrafish with 8-micron polystyrene microplastic and want to study the bioaccumulation in different organs. Can this be done using hydrogen peroxide digestion followed by...

05 August 2024 853 3 View

Binder for ZnO nanoparticles in graphite paste electrode?

I have been using paraffin, but the deposited ZnO still detach from electrode. What is the best binder to modify graphite paste electrode with ZnO nanoparticles?

03 August 2024 4,624 3 View

Can i quantify a nanoparticle encapsulated in cell culture medium by hplc?

Hello, if you made a transwell assay where you incubate the cells with a nanoparticle-encapsulated drug and considering that in the oposite compartment you'll have both the free and encapsulte...

03 August 2024 2,730 1 View

Mossbauer spectroscopy Co0.6Mn0.4Fe2O4 MNPs?

Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.

31 July 2024 9,140 2 View

Does anyone know where to find polypropylene microspheres or microparticles around 1-5micrometer?

These will be used for the study of microplastics in the lung

29 July 2024 9,609 2 View

Addition of EDTA during the synthesis of copper nanoparticles to prevent it from being oxidized?

I've attempted to use this method to synthesize copper nanoparticles. Copper nanoparticles can be synthesised using a variety of precursor materials. CuSO4, distilled water, NaOH, and EDTA are...

28 July 2024 8,027 3 View

Optimal siRNA Volume for Complexation with Liposomes in a 2.5 mL Solution with 10 mg/mL Lipid Concentration?

How much volume of siRNA can I add to 2.5 mL of liposomes with a total lipid concentration of 10 mg/mL?

27 July 2024 6,920 1 View

Can we isolate microplastic from sludge sample without using vacuum filter..?

isolation of microplastic from sludge sample using centrifugation ..

23 July 2024 6,418 0 View

Vadym Chibrikov

Good day, Mirko Benvenuti! Hope you are doing well.

Please, check the following links:

https://www.degradex.com/polystyrene-microspheres.html

https://www.sigmaaldrich.com/PL/pl/product/sigma/89904

https://www.sigmaaldrich.com/PL/pl/product/sial/79633

https://www.spherotech.com/pol_par.htm

Best of luck in your research!

Yours sincerely,

M. Sc. Vadym Chibrikov

Department of Microstructure and Mechanics of Biomaterials

Institute of Agrophysics, Polish Academy of Sciences

Mirko Benvenuti

Dear Vadym Chibrikov thanks for your kind answer

best regards

Chen Jingwen

Hi Mirko,

You may make an inquiry at Alfa Chemistry, they offer kinds of good-quality materials.

https://www.alfa-chemistry.com/inquiry