How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

For acid treated montmorillonite clays what will be the result of surface area?

The organo montmorillonite nanoclays modified with octadecylamine were used for the experiment. After acid treatment, the surface area will be increase. However, in my experiment, the surface area...

10 February 2021 1,581 3 View

How to identify when a gaussian program is about terminate normally?

Dear all, I am trying to optimize a bimetallic complex using # opt=tight b3lyp/lanl2dz scf=qc geom=connectivity. The program is running for around 5 days but the size of the .chk remains same...

05 February 2021 8,721 3 View

Can I use 500ng of DNA for restriction digestion?

The recommended amount of DNA for restriction digestion is 1ug in a 50ul rx I've got around 500-600ng of DNA in a total volume of 35ul. Would I get satisfactory results with this amount of DNA for...

31 January 2021 729 6 View

What is the effectiveness of online teaching during COVID-19?

Please share your experience on the effectiveness or challenges on online teaching during Covid-19 lock down. Share your experience about challenges, technology, online learning platform,...

26 January 2021 4,532 37 View

LC-MS metabolomics data after annotation some have their compound name but no KEGG id or with KEGG id but no pathway. How to interprete?

Recently I have generated LC-MS metabolomics data. After annotation, some have their compound name but either no KEGG id or KEGG id but no pathway. How to interpret those compounds? Additionally,...

18 January 2021 1,938 3 View

Has there been any scholarly research done in schools that addresses teaching from a global citizenship perspective to deal with global problems?

The current global pandemic, the climate crisis, the destruction of the oceans (with plastics, etc), and massive numbers of refugees are part of a set of serious global problems. It is clear...

13 January 2021 2,022 3 View

How to remove a citation from list of research articles?

I want to remove a duplicate citation

01 January 2021 3,983 3 View

No executable file generates while building geant4 example code, where is the problem?

Hello, I am a newbie in geant4. I'm learning it playing with example. Sometimes, when I go to simulate an example code, it doesn't create an executable file (the green one in my ubuntu terminal)....

26 December 2020 9,482 3 View

How to get structure and topology for glycosaminoglycan (GAG) of arbitrary length?

Hello all, I want to do glycosaminoglycan (GAG) simulation in Gromacs. Initial structure and CHARMM topology for short chains can be obtained from Charmm GUI glycan modeler. But I have to take...

23 December 2020 6,092 2 View

Is there a way to grow biofilm in lab to mimic biofilms in showers and baths? Also, how can I measure it?

Hello, I am new to biofilm research and have a question about growing and measuring biofilms. We want to research the effect of a type of enzymes in breaking down biofilms in showers, baths, hot...

14 February 2021 3,522 3 View

Can I use the Chlorophyll stability index (CSI) to calculate the stress potential of cyanobacteria that are under stress?

I want to calculate the stress potential of cyanobacterial cells that are inoculated with antagonistic bacteria. My results showed that there is a drastic reduction in the chlorophyll content of...

23 January 2021 331 3 View

Does the Kubelka-Munk function F(R) represent actual absorbance of UV-Vis reflectance spectra of cyanobacteria?

20 October 2020 4,990 1 View

What is the average life span of Cyanobacteria?

Is there any difference in the life span of current variants of this evolutionarily ancient phototrophic bacteria and the pre-historic ones.?

11 October 2020 6,845 5 View

How to successfully produce agarose microwells with PDMS stamp?

05 October 2020 3,696 3 View

How can I differentiate between cyanobacteria and microalgae in agar plates?

I'm trying to isolate cyanobacteria from fresh water and soil. I've plated several dilutions of my samples into BG11-agar plates and I have a mixture of green colonies/halos and brown stains which...

06 September 2020 8,959 4 View

What is the best equipment to find the thermal conductivity of a heatsink?

Dear All, I am trying to find the cooling efficiency of my heatsink and I am wondering if there is any equipment to do this thermal test for me. I am looking to find equipment to find a point to...

30 August 2020 3,961 8 View

Is microsatellite study is useful for phylogenetic study of cyanobacteria?

Which is one is better in between 16S rRNA and microsatellite phylogentic study?

28 July 2020 1,633 2 View

I am trying to simulate the Hot rolling process in comsol. Is there anyone who has already done this on comsol? I am facing quite a lot of issues?

I am trying to simulate a Hot rolling process in Comsol. I am facing quite a lot of issues regarding the domain boundary condition and all. If someone who has solved or has an idea of how to...

12 July 2020 1,448 2 View

What is best route for break downing of as-cast CP Titanium?

I can not find literature with comprehensive description about break downing of as-cast of CP Titanium after Vacuum Arc Remelting (VAR) process. what is best rout for hot rolling of CP titanium...

11 July 2020 9,398 2 View