Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View

How do I create a categorical variable, level of exposure, and a dummy dichotomous, yes-no, variable for the Harvard Trauma Questionnaire Part 1?

I am using the Harvard Trauma Questionnaire (HTQ) Trauma Events scale (original version) that has 17 items (17 different traumatic events) with 4 response options, indicating 4 levels of exposure:...

04 February 2021 1,509 3 View

What crossover operators can be used for a GA that finds suboptimal positions for a set of buildings?

I'm currently working on my undergraduate thesis where I develop a genetic algorithm that finds suboptimal 2D positions for a set of buildings. The solution representation is a vector of real...

11 January 2021 9,835 4 View

Cleaning SGE Micro Channel Device?

Hello all, I have a 3-port SGE microchannel splitter in my Thermo Trace 1310 GC connected to an Isolink 2 combustion interface. My microchannel device is clogged and my flow is significantly...

29 December 2020 7,002 1 View

How did Rutherford and Thomson derive the equation for average deflection of a particle hitting an atom?

08 November 2020 9,046 2 View

Do mature (virgin) forests take up carbon, if there is no net increase in biomass?

I seem able to get any answer I please just by searching a little more. Where is the truth? Concerning untouched Amazon rain forest, when people measure carbon flux, do they include the carbon...

27 October 2020 2,546 4 View

If one wants to link together power sources all across North America, would it be better to use DC transmission lines, or gas pipelines, say with H2?

Intermittent renewable energy sources become more efficient and reliable as the number and diversity of sources is increased. But electrical transmission over distances greater than 2000 miles...

20 October 2020 731 5 View

Converting csv files with data for mapping rainfall on QGIS?

Hi, I am hoping to produce rainfall and temperature maps for a current project in QGIS. I have csv data downloaded which have been imported into QGIS. My aim is to be able to produce rainfall...

10 October 2020 4,930 5 View

Opinion data can aggregate up to US state level data?

I am not familiar with US-only based data, but I am looking for a survey that someone has conducted across all 50 states that would allow me to aggregate opinions into state-level measures of...

07 October 2020 7,617 2 View

Plant checklists for Borneo and Sumatra?

Dear RG Community, Can someone please give me references to publications (or online websites) that include plant checklists (vouchered if possible) for Borneo and Sumatra? Thanks in advance, Zach

20 September 2020 6,202 4 View

How to enter a variable with multiple selections as response in SPSS software?

Hello I wanted to ask how can I enter a variable in SPSS with the option of multiple responses for a given variable? For example: If question is "What is your role?" Answer Choices: (A) Positive...

08 January 2021 5,741 4 View

Data to estimate Potential Fishing Zone?

I need data to estimate Potential Fishing Zone .The data related to any of the attributes like dissolved oxygen, sea surface temperature, chlorophyll and salinity in numerical form with respect to...

25 December 2020 8,515 4 View

Is the certificate getting from conference webinar is the same as the attendance certificate ?

Nowadays I have received a lot of invitations for attending conference online like webinar and get certificate and I am wandering about this certificate is the same for real attendence physically...

26 November 2020 5,344 4 View

What can we infer from different microbial communities in fish gut from two different locations?

Recently I have been interested in microbial communities from gut & intestine of the same fish species popular in Indonesia marine aquaculture, Grouper (Epinephelus sp.), but are raised in...

18 November 2020 510 5 View

Do you need participants for an online study in Hebrew?

Dear Israeli students and researchers, You are invited to post your studies on the subreddit for surveys/studies in Hebrew (for free): https://www.reddit.com/r/Surveys_in_Hebrew/ Hopefully this...

12 November 2020 292 3 View

Hello everyone! :) Would you kindly recommend\suggest articles or previous research conducted on Linguistics Interference phenomena?

I'm searching for relevant studies on 'Linguistics Interference' (interference at a lexical level - borrowed words - grammatical interference in terms of word order, use of pronouns ..etc.)....

02 November 2020 5,752 7 View

Does Linear Discriminant Analysis (LDA) assess linear relationship between independent variables and variables used for grouping?

I grouped sites in six different clusters on the basis of fish species abundance using a self-organizing map (SOM). Now, I want to determine to what extent water chemistry variables can explain...

19 September 2020 8,903 3 View

Do you know of publications reporting fisheries post-release survival rates of marine turtles?

We are compiling publications that estimate marine turtle survival following release from fishing gear. We've identified a handful of relevant pubs and hope to identify a few more.

17 September 2020 3,194 6 View

Which is the best method for analyzing Microbial Community Composition (MCC)?

Microbial communities are groups of microorganisms that share a common living space. The microbial populations that form the community can interact in different ways. My question is what is the...

21 July 2020 9,281 3 View

How to find properties of a network plot?

Hi, I constructed a network with igraph showing the connections between bacterial groups in three different systems (suppose A, B and C). Each node represented an OTU/ASV and edge represented...

21 June 2020 7,637 1 View