Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

Cloudy/high background western blot - can anyone help me?

Hi everyone! I try to detect VDR protein (~48 kDa) using Western Blot. After SDS-PAGE using 10% MP TGX Stain-Free Gel from BioRad I transferred the protein onto an metOH activated PVDF membrane...

23 February 2021 6,266 3 View

Which variables can be used to increase/decrease the grain size of czochralski-grown polycrystalline silicon?

Which variables (such as pull speed, melt temperature, annealing temperature/duration, cooling rate, etc.) affect the grain size of czochralski-grown polycrystalline silicon? In what direction...

10 January 2021 2,204 6 View

How do I justify the use of fish scales to synthesize a nano filter?

Good day. I am doing a studu on the use of fish scales to create a nano filter. This is aimed at potentially solving the face mask problem brought about the pandemic. This is what I know so...

09 January 2021 8,907 5 View

Calculating Intercoder Reliability for 3 coders with 7 categories across 6 texts?

How would you calculate inter-coder reliability (Kappa coefficient?) for the following scenario: 6 texts coded across 7 categories (codes) by 3 coders?

23 December 2020 2,324 3 View

No title

10 October 2020 3,407 2 View

Do you agree that one of the advantages of the Boundary Element Method is that it easily addresses Incompressible Materials (Poisson's Ratio = 0.50)?

When modeling incompressible materials via the Finite Element Method (FEM), typically the plane formulation that is displacement based fails when Poission's Ratio = 0.50, which is a standard...

08 October 2020 7,058 1 View

Recommended analysis for an ANCOVA-like problem with binary variables for dependent variable and covariate?

What is your recommended analysis for the following problem: I have 3 (treatment) groups and a non-randomized pre-post design. I want analyze the effects of the groups on the follow-up measure,...

28 September 2020 5,890 4 View

No title

18 August 2020 3,955 11 View

Are there any test methods for butterflies or other arthropod pollinator besides bees?

In the current EFSA Guidance on the risk assessment of plant protection products on bees (Apis mellifera, Bombus spp. and solitary bees) related to the Regulation (EC) 1107/2009 valid test methods...

26 March 2020 1,178 1 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

What are the natural background values of Major,Trace and REE elements in sediments deposited by Indian rivers?

We are working on geochemical analysis of sediments derived from eastern and western ghats of India.

20 January 2021 8,963 6 View

How deep into the sediment do marine/riverine oligochaetes live?

I am working with intertidal muddy sediments. In one of my sites the sediment was extremely muddy (high % of silt), oxic layer was shallow, and there were a lot of oligochaetes. I would like to...

14 January 2021 7,269 4 View

How to identify paramagnetic, ferrimagnetic and ferromagnetic from magnetic susceptibility data ?

Dear All, I have calculated Xlf, Xhf, and Xfd% of my sediment samples by using Bartington MS2B magnetic susceptibility and got mass-specific magnetic susceptibility value on 10-8m3kg-1 (10...

28 December 2020 4,728 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

Which sediments are transported by Tsunami waves?

Share your opinion/experience. Thanks

15 November 2020 6,211 4 View

How to quantify different phases of clay minerals (percent) of marine sediments using XRD?

Hi, I am interested in quantifying the abundances of different phases of clay minerals of marine sediments using XRD analysis. Any suggestions regarding the detailed method/software will be...

03 September 2020 3,031 8 View

Factor and Multivariate Analysis of Geochemical data (Generated from Geochemical Mapping using stream sediment samples)?

I want to know about any training module or step by step guide for doing factor analysis and multivariate analysis. This is required for analysing Geochemical data obtained from Geochemical...

24 July 2020 266 3 View

How to extract microplastics from clay rich sediment?

I am looking for an efficient, low cost, and environmentally friendly method to extract microplastics from clay rich sediment, e.g. mud flats, mangrove forest ... .

23 July 2020 1,000 3 View

What are the stream parameters that originate from the catchment as well as the stream channel (hydrographic network) ?

I am looking for any water quality parameter that originates from the catchment plains and hill-slopes and from the stream channel itself similarly to Suspended-sediment concentration measurements.

14 June 2020 2,434 9 View