PEG coated Fe3O4 nanoparticles in aqueous NH3?

Hello, I synthesized PEG coated Fe3O4 nanoparticles by coprecipitation methods and I would like to ask whether they can be dispersed in aqueous NH3 since they have a PEG coating and theoretically...

06 February 2021 5,217 4 View

Is there such a function? Is it unique?

21 January 2021 8,962 13 View

What are the current developments in terms research and publications in anthropology in general and social anthropology in particular?

I am interested in examples of anthropological methods that have been applied across different disciplines, for exmple in mathematics education.

20 January 2021 3,090 3 View

How did the tests or exams get to Latin America, specifically the written tests?

I am looking for some bibliographic references that explain how tests or exams (measurement and assessment in education) came to Latin America, specifically written tests. I would like to know if...

13 January 2021 8,607 0 View

Is this true for all values c > 0?

25 December 2020 3,621 45 View

Can children from 1 year old to 15 years be given MODANA and Pfizer Anti-COVID-19 vaccine?

The clinical disease of COVID-19 has been low in children generally and vaccine has been develop.Any evidence of its safety,efficacy and risk for allergy in children? any exemption for children...

23 December 2020 7,177 12 View

Can large samples be stored at -20 degrees prior to RNA extraction?

As part of a Covid project we are sampling urban rodents and performing RNA extractions and serology work. We have too many samples to store at -80 and have opted to perform extractions the same...

15 December 2020 5,252 2 View

Substrate functionalization and antibody deposition for biosensor work?

Hello, I am a bio student working in a lab on his free time and I just started working with an engineering group on sensors. My questions are: 1)Functionalization steps and what are the best...

21 November 2020 7,996 2 View

Why am I seeing RED fluorescence in control non transgenic plants?

Hi experts, I have cloned the DsRED gene into a plant vector under 35S promoter and used it for direct seed transformation of Chenopodium quinoa. When I checked the potential transformed...

24 October 2020 4,775 3 View

Do you think there are any prospects for hydrogen as an alternative to natural gas when operating a gas turbine?

At the moment it is very expensive, the price of 1 kg of hydrogen is from $ 2-5. Are there any prospects for green hydrogen? or will we extract hydrogen from gas? what promising technologies can...

19 October 2020 1,954 7 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

Universal bacterial primers targeting a mRNA?

Hi, I'm looking for universal primers targeting a bacterial mRNA to quatify bacterial load by qPCR in a complexe mixture (eukaryote and prokaryote RNA). Ribosomal RNA being depleted, I absolutly...

22 February 2021 9,969 3 View

Regarding immunology, transmissivity, herd immunity and vaccines in Sars CoV-2?

This is a follow-up on an earlier question regarding mechanistics of vaccines: why current vaccines don't block transmission. In summary, they don't engage mucosal immune cells to produce IgA....

08 February 2021 8,321 3 View

Can we model an Arima (0,0,0)(0,0,0) with pulse intervention?

Hello, i got trouble when i try identify a intervention analysis about disaster impact on night time light intensity. i have 65 month data from January 2015 until may 2020. based on...

06 February 2021 10,018 4 View

Is model convergence time a game changer for 5-10 year ahead forecasts?

There is a slew of academic papers that look at basically the same base model while switching optimization algorithms for either its hyperparameter or model parameter tuning. While I acknowledge...

24 January 2021 417 3 View

Wind speed Forecasting: Training set size?

I have one year of wind speed data, collected at hourly intervals. I am trying to train a forecasting model using this data. I want to be able to generate rolling forecasts up to 7 days in the...

23 January 2021 3,313 5 View

Hello.Can you help me to Introduce "Scientific and research centers in the field of floods"?

The purpose is to identify flood forecasting, control, warning,.. If you have a booklet, book, article, file, site address, etc., thank you for the introduction or its link. Thanks for your attention

30 December 2020 610 4 View

Matlab fireworks code for extracting solar cell parameters?

I am currently working on extraction of the parameters of the photovoltaic cell using fireworks algorithms. But unfortunately I find it hard to code these algorithms. Please is what you can send...

02 December 2020 3,418 4 View

What are the challenges of conducting ethnographic fieldwork in during Covid-19?

Hi everyone, Would you share your thoughts on the challenges and opportunities of conducting ethnographic fireworks during Covid-19? I have fieldwork this summer; your feedback is highly...

23 November 2020 778 8 View

How two compare two exponential data sets?

Hello everyone, I am currently analyzing bacterial growth in cold water dispensers as part of my MSc thesis. During the experiment, I measured the bacterial counts in the effluent water of 3...

15 November 2020 7,628 3 View