What causes the white coloration in shelf fungi?

During late June of 2020, I had picked some relatively fresh Schizophyllum commune. By the time I got around to examining them, they had become dried and shriveled. I placed the point of...

02 December 2020 4,193 3 View

Is there a proper citation for the human genome assemblies?

I am currently writing up results from a study that utilized the hg19 [Genome Reference Consortium Human Build 37 (GRCh37)] for analysis and I have not been able to identify a way to cite this...

24 November 2020 9,960 2 View

Professional Engineer's Code of Ethics: What & How To Assure Compliance?

Historically, the subject question has been met mainly with "After The Fact" assertions. Yet when one learns of the infrastructure failures . . .bridges, tunnels, pipelines, highways. . . it...

11 November 2020 3,574 3 View

Parsing error in autodock vina?

I'm trying to use autodock vina, and I received the following error for the ligand file when running the configuration: "Parse error on line 26 in file "15.pdbqt": Unknown or inappropriate...

21 October 2020 7,245 1 View

How do we use adjusted prevalence rate (aPR) in a meta-analysis?

Hi, I am doing a meta-analysis using Review manager determining association between increase in pollutant concentration and the risk of a particular disease. Majority of outcomes are reported as...

20 October 2020 10,012 3 View

How can I calculate prevalence ratio on Stata?

Hello, Our study aimed to estimate the stress prevalence among health professionals who works on pre-hospital services. The dependent variable was the presence or absence of stress (dichotomic...

16 August 2020 9,595 5 View

Q1. What changes have been observed in the professional lives of our CE graduates ? Q2. What CE academic programs have developed?

In June 1995, the culmination of some 3 years or so of preparation, led by professor Dr. Jim Yao, Texas A&M, resulted in an "ASCE Education Conference" in Denver, CO. At the end of that...

12 August 2020 1,069 3 View

How can I delete a document and replace it with proper text?

I have added a new document to my documents but found it was the wrong file. How do I delete the current document so I can replace it with correct one.?

03 August 2020 292 1 View

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16 June 2020 2,168 1 View

Native English speakers and/or PIV intermediates: Could you check the wording of my PIV tool...?

Hello everyone, I have made a free PIV tool for Matlab in English, but I am not a native speaker. I would like to make the tool as clear as possible because it is used quite often. Could someone...

09 June 2020 5,449 3 View

Isolates of Hymenoscyphus fraxineus?

Dear Dr. Cai, my name is Simone Prospero and I work in the team of Phytopathology at the Swiss Federal Institute for Forest Snow and Landscape Research (WSL;...

01 March 2021 1,133 1 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View

Must a control group to be in the same semester that a experimental group for a study in education?

Hi everyone, I'm researching about mobile learning in higher education. Due to the small number of the students in the semesters, I cannot have a experimental and control group together. I'm...

22 February 2021 3,653 11 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

Can I arbitrarily take a cycle number of 40 for the gene that was not expressed at all in qPCR results calculation?

I ran RT-qPCR for a control and a treated group and it appears that my gene of interest was not expressed at all in any of the subjects in the control group. So I was wondering if I could...

20 February 2021 6,243 10 View

How to overcome convergence issues in concrete arch models?

Hi, I have modelled a three-span arch bridge with soil fill over along with pedestals. The FE modelling is done in LUSAS with HX8M solid elements (i.e. 3D solid modelling). The non-linearity is...

20 February 2021 1,346 2 View

How to perform EEG classification of Alzheimer and control groups?

I am doing a project on classification of EEG signals of Alzheimer's disease and control groups. Previously, I extracted the alpha power of the EEG signals and found out the strengths. I want a...

18 February 2021 8,502 2 View