How to filter data in R?

I have a table of 4 variables and want to short the data based on their values. I want to omit the parameters which are below 100. I used package dplyr but could not figure out much.

11 December 2017 2,743 2 View

Fabricated results are news of everyday.. Does publication in high impact is so important and does number of publications is your identity?

Fabricated results are news of everyday.. Does publication in high impact is so important and does number of publications is your identity?

10 November 2017 2,913 9 View

Any postdoc position in microbiology ?

I am looking for a postdoc position in microbiology, it will be very helpful if anyone can inform me the same and help me out.

07 August 2017 4,657 1 View

What is the importance to check metal complexation with salts during bacterial isolation?

what is the importance to check metal complexation with salts during bacterial isolation?

06 July 2017 3,736 1 View

What is the benefit of using silver nanoparticle as antimicrobial agent in spite of silver nitrate which is itself a toxic?

I set few experiments with silver nanoparticle and silver nitrate and both the substance has antimicrobial property more or less similar. So my question, why not use silver nitrate directly in...

02 March 2017 5,078 3 View

Can anyone help me with total DNA extraction from water sample?

We want to do metagenomic study for some environmental water sample using traditional extraction protocol (Without using any KIT). Can anyone help me with the extraction ?

10 November 2016 4,706 4 View

How to detect whether a compound of interest secreted by bacteria in a media is containing carbohydrate or protein?

We are trying to isolate alpha amylase inhibitor from some bacteria but we are confused whether the inhibitor secreted by the bacteria in the media is carbohydrate or protein.

06 July 2016 4,624 2 View

Do Sulfur act as chemo-attractant for insect ??

During my few preliminary studies I have observed that sulfur containing chemicals induces an unknown pheromone like sensitive responses.... Does sulfur has any role in activating any chemostatic...

03 April 2016 4,926 3 View

How can I isolate mycorrhiza from soil?

I would like to isolate arbuscular mycorrhiza from tea rhizosphere. If anyone could help me with a detailed protocol?

02 March 2015 5,198 7 View

How to calculate genetic diversity and allele frequency ?

If I say I have a population size of 30 and 6 allele of a locus. Then how would I calculate the same for this?

02 March 2015 5,738 0 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Concentration of DNA?

Hello everyone! Is a normal value 295.8 ug/ul for cDNA? If not what does it mean? Where is the mistake? The measurement was done with nano drop. Thank you!

09 February 2021 6,202 1 View

What is the reference value of THD in BLDC MOTOR speed control ?

i used to control EHO+ANFIS to MRPID to Landsman converter for bldc drive i got 7% but some of them are telling IEEE standards are < 5% is it correct for Drives ?

07 February 2021 5,892 1 View

How to know the threshold limit value of a sar image...??

i want to do thresholding by segregation of water areas from non water areas for that i am using model maker in ERDAS but i am unable to get the threshold limit value of my image.

26 January 2021 8,277 1 View

No title

14 January 2021 8,086 37 View

What are the most important values we should teach to our students?

In one of my articles "The need for a values-based university curriculum" https://www.universityworldnews.com/post.php?story=2019092415204357 I propose that higher education should adopt a...

14 January 2021 2,304 95 View

How do you transmit and evaluate ethics and moral values in you teaching activity?

Ethics and moral values have always being an essential part of teaching and scientific research. How do you teach and evaluate these essential subjects in your daily interaction with students?

23 December 2020 5,058 7 View

What would cause different shape DMA loss modulus curve in different batches of PC+ABS?

I have some DMA curves of PC+ABS from different batches. The PC loss modulus peak is fairly consistent but one batch has a peak value 10degC lower than the rest. Another peaks at the normal value,...

06 December 2020 809 2 View

Is there any variation in d dimer levels due to the different methods adopted for analysis?

While doing my research work, I have noticed that the D- dimer levels of normal animals (dogs) are given in different ranges in different publications. Is there any variation occuring in d dimer...

08 November 2020 296 1 View

How to perform correlation testing between two datasets in which one dataset has gender-specific reference ranges?

I want to test for correlation between dataset A and dataset B (both have numerical data). For example, dataset B consist of hemoglobin values which have different reference ranges for male and...

20 October 2020 9,550 6 View