Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Efficiency of Proximity Feed Patch Antenna ?

Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...

24 February 2021 7,662 3 View

Please help in identification of this insect?

This insect is minute in size around 1 mm and not clearly visible with naked eye.

22 February 2021 5,907 11 View

What is causing the raw fluorescence to be negative?

Hi everyone, I would really appreciate it if someone can tell me when and why a raw fluorescence starts below zero. In the picture attached below the blue colour curve starts from a negative...

09 February 2021 4,642 3 View

How to match the XRD of a compound for which there is no JCPDS file ? Is there any other characterization to claim the synthesis of desired compound?

I have synthesized LiMgF3 using the starting precursors LiF and MgF2 via solid state diffusion method. Now I am looking for some characterization to claim the desired product, as there is no...

09 February 2021 921 3 View

Can anyone suggest me broad host range fluorescence expression vectors for Gram-positive bacteria ?

Hi everyone, I am looking for fluorescence expression vectors for expression in gram-positive bacteria present in the skin microbiome. I need to tag them with a fluorescence marker and observe...

06 February 2021 2,566 4 View

Are the hyperspectral image datasets which are publicly available at ehu.eus website atmospherically and geometrically correct?

I've come across a couple of publicly available hyperspectral image datasets from the website http://www.ehu.eus/ccwintco/index.php/Hyperspectral_Remote_Sensing_Scenes Now, my concern is...

05 February 2021 3,550 1 View

Any recommendations for open-source survey form builder, which has option for semantic differential scale questions apart from Likert scale?

Asking this as Google forms doesn't allow multiple items in a semantic differential format.

04 February 2021 5,869 4 View

Why the cells die after stable transfection?

I tried stable transfection in the U87 cell line with the sgRNA-Cas9 All-in-One lentivector. Cells were cultured in a 6-well plate, 4ug plasmid was transfected after 24hs when the cell confluence...

22 February 2021 2,864 4 View

What are possible factors influencing the isotope-based hydrograph separation in river confluences?

When performing hydrograph separation (EMMA method) with isotope tracers in river confluences (natural large basin), we found that the contribution of each end member sometimes exceeds the...

20 January 2021 8,403 5 View

Is there any chemical environment or parameters to define or explain the sediment and soil profiles, are they separated by chemical parameters?

Sediment is relatively younger than the soil in the depositional environment as the sediments are consequence of the accretion of particles transported either by waters or by winds, whereas, soil...

12 December 2020 4,822 18 View

How to know if 87Sr/86Sr is reliable for Sr isotope chemostratigraphy in marbles?

I am currently looking for parameters to know if 87Sr/86Sr data is reliable for chemostratigrahy in marbles, and/or parameters to know if those marbles have had some post-depositional...

30 November 2020 9,032 8 View

Stable Transfected Cell lines, is the gene or protein regulated?

I been wondering if genes when stable transfected become regulated by the cell, or if the gene is constitutively express and translated and the protein previously made is degraded at a slower rate...

30 November 2020 8,095 2 View

Which isotopes can be used for preserving agricultural products?

Different kinds of Isotopes are playing very important roles in agriculture. They are used to detect different nutrient elements in soil and other crop improvement program. But which isotopes and...

16 November 2020 9,248 7 View

Dear fellows, what models are there available for water stable isotopes in the vadose zone?

I'm aware of Hydrus and Netpath, but are there others? I am highly interested in water stable isotopes in variably saturated and non-equilibrium flow (double porosity/permeability). Any hints...

21 October 2020 9,395 2 View

Have you published anything about the Ebrahimi meteorite? If so can you comment on anything pertaining to the isotopes of oxygen seen?

Did you see any evidence of D-ribose or other organic chemistry?

14 June 2020 9,565 8 View

What program/software can I use to search/mine a high resolution full scan mass spectrum (QTOF) for halogen isotope patterns?

For Bromine, the program would be able to go though each of the m/z's in the full scan, add 1.99795 (difference in mass between 79Br and 81Br) to that m/z, determine the intensity ratio between of...

16 May 2020 7,373 2 View

Anybody can determine this micro-fossil?

Dear Researchers, I found it from Permian limestone strata in Julfa province (North-West of the Iran country). It should be mentioned, this microfossil extracted from samples collected of the...

29 March 2020 574 5 View