I have 14 activated samples from crustacean shells that require SEM and FTIR in Nigeria. please i need a laboratory where that can be done?

Found on exposed rocks near the shore.

CaO derived at 1000 degrees from clam shell is not white, it's like grey while CaO from eggshell is absolute white. Why?

The purity (%) percentage. I have the DDA value, XRD, FTIR, Tg, TGA, and SEM. If any one can please help me.

Hello everybody!

Is there available TEM or SEM images of allotropic and catena Sulfur 8 with high resolution and quality?

Best regards,

Rashid Gaziev

I have been trying to make a PIB with CuCo2S4@NCs (with nitrogen doped carbon) as anode material and all of my result i.e, XRD, SEM, TEM and C.V e.t.c are good but the Galvanostatic Charge/discharge test result is not good and I have tried many times to change the precursors for Carbon and used different concentrations of Sulfur but the problem still their. It does not show any capacity or it does show some but than quickly in another cycle it becomes zero than, What is the issue here?

The helmet shell feeds on sea urchins by dropping its entire shell on the prey. It also secretes sulphuric acid which I have personally seen when live shells were brought ashore.

1. Is the sulphuric acid used to dissolve the hard shells of prey they feed upon?

2. Defense?

3. Any other specific function?

Looking forward to your inputs

I have four samples of alloys(CdSxSe1-x) containing selenium and sulfur in different proportions. When we examined it with SEM , the sulfur element value appeared negative in all samples, but by (EDS/EDAX) examination, sulfur appears as a sign, so what is the reason for that?

Kindly provide a detailed explanation .Thank you in advance