How can I analyze multiple binary independent variables against an ordinal dependent variable?

I have a dataset from a questionnaire that consists of a dependent variable called skill level. This is an ordinal variable that has dummy coded values 1-5. I also have multiple (up to 10)...

05 February 2021 3,567 5 View

Can you recommend a low maintenance (all-in-one?) fluorescence microscope capable of live cell imaging?

We are looking for an inverted fluorescent microscope capable of imaging fixed samples and live cells. We are situated in the Dominican Republic where to my knowledge support by most companies...

20 July 2020 3,693 3 View

Who knows differently options for stress induction?

Hi, I am a german university student (business administration and psychology) and I am going to write my bachelor thesis. I would like to research a correlation between stress and the language....

17 September 2019 4,049 3 View

Do you have a good protocol to fix cells from buffy coat for mitochondrial EM analysis?

We would like to do an electron microscopy analysis of mitochondrial morphology in human blood cells. I am planning to use buffy coat for this. Is it possible to do this with a limited amount of...

07 March 2019 4,660 4 View

Is there a possibility to locally refine mesh in Ansys Maxwell?

Hello everybody, I am working with Ansys Maxwell 3D and try to refine mesh in certain areas of my body. To be more specific: I have created a cylinder and now I want to refine the mesh in a...

17 September 2018 6,421 1 View

How to test for differences between three groups (location on flower head) after a Chi-square test?

13 December 2016 4,584 3 View

How to statistically test data of fish behaviour before/during/after noise exposure?

I'm analyzing data from experiments, where in a net pen we exposed fish to different noise frequencies. However I'm uncertain as to what statistical tests I should use to test for possible...

12 September 2016 9,049 7 View

How to select the penalty contact stiffness?

Is there a rational way to select the penalty contact stiffness values based on the elastic properties of the contacting materials? It would seem reasonable to relate the pressure - overclosure...

27 October 2013 7,001 20 View

Connecting with other researchers in the field of industrial decarbonisation?

I would like to use this discussion section to announce our new non-profit research network focused on industrial decarbonisation (RENEW-Industry). https://sites.google.com/view/renew-industry/...

01 January 1970 6,136 8 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

Aspen Plus Error: Unknown or undefined bead number?

Hello, in my Aspen Plus Simulation (see attachment) there are two heat exchangers. One HEX1 (oil+gas) ist fed by hot gas which ist coming out of a burner. The other HEX2 (gas+gas) shall work as a...

14 February 2021 8,096 2 View