What is the paradoxical effect of VINASSE in terms of low pH (<4) and high EC (>50dS/m)? What is its impact on soil properties and crop growth?

What is the paradoxical effect of VINASSE in terms of low pH (50dS/m)? What is its impact on soil properties and crop growth?

15 February 2021 3,142 6 View

Retrospective cross-sectional study design?

I am using data from Demographic and Health Surveys conducted in the last 20 years. Can I name my study design a "Retrospective cros-sectional"?

01 October 2019 6,641 7 View

Is there any endevour that transform the manual CN-model in to computer application software?

Despite its importance in watershed hydrology and management, until now I know CN-model is a manually operated model. If there are some experiences I would like to hear from the group. Best

10 October 2018 5,085 3 View

FE or RE model selection?

Hello, I am regressing an equation specified as follows GDP per capita_it= bo + b1 Human capital_it + b2 Openness_it + .....+ u_it the regression is based on unbalanced panel data for 97...

04 October 2018 8,233 2 View

How can I determine minimum sample size for single arm cohort study?

Can any one tell how to determine minimum sample size in a prospective cohort study when the cohort is not divided into exposure and non exposure groups? Thank you!!!!!

04 September 2018 2,716 4 View

Is there any one who could say something about the mantel test (attached figure) on the correlation between genetic and geographic distance matrices?

29 June 2016 9,132 5 View

Why do we dilute the genomic DNA during PCR amplification?

18 November 2015 799 9 View

Is there anyone interested in collaborating in assessing the molecular diversity using SNP marker?

I have extracted DNA from a plant endemic to Ethiopia(Thymus schimperi). I want to Asses the molecular diversity using SNP marker. Any one interested in collaborating in this regard is highly...

01 November 2015 5,774 17 View

Authorship of the journal

I have a comfirmation letter of this Journal article from the joirnal editor! The autorship of the is mine! There was a mistake because of the same first and second name we had with Dr Kassahun...

01 January 1970 2,509 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 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

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

Have you ever experiencing air vent trouble in fermentation process?

Dear all, My research group is currently working with a 12-litre fermenter. Somehow, if we do the fermentation for more than 20 hours, the process will be more prone to contamination. Our current...

23 February 2021 1,908 2 View

How can I improve the concentration of banana fruits extracted RNA?

Currently, I'm working with banana fruits. I've tried to do RNA extractions with different methods, and I've gotten total RNA without contamination, but I couldn't get a high concentration of...

22 February 2021 6,126 2 View

Help with assigning pressure boundary conditions in FLUENT on a large structure?

Hello, I created a very tall tower (>1000m) and applied pressure boundary conditions at the inlet (bottom) and outlet (top) that correspond to the pressure are their relative altitudes....

22 February 2021 9,972 4 View

What type of pressure sensor are usually used in microfluidics?

My team is designing a dual channel microfluidic chip that runs air and water. I think we've decided on the NE1000 syringe pump for it's versatility and feedback control. We will be ordering the...

18 February 2021 9,928 2 View

Not able to charge-discharge Li-ion coin cell at higher C rate ?

I am working on cathode material. I have made different Li-ion coin cell against Li metal using commercial available cathode materials such as LCO,LMO, LFP and NMC and also with the lab...

18 February 2021 1,450 3 View

How to find the air side pressure drop in a spiral fin tube bundle cross flow heat exchanger?

How to find the air side pressure drop in a spiral fin cross flow heat exchanger? The pressure difference at the inlet and outlet is very low compared to the experimental results, which I...

18 February 2021 1,109 2 View