Does anyone have an old digital 'whole slide' scanner that they can donate to a good cause?

New transplant programme starting in a small African nation, but they will need support and training in the examination of biopsies. A digital 'whole slide' scanner would allow virtual biopsy...

27 November 2019 9,900 1 View

Is transgender a feeling or a desire?

I encounter difficulty in getting the sense of transgender. If it is feeling how does it develop? If it is desire what motivates it? It is important that I should have knowledge on this phenomena...

23 July 2019 5,137 4 View

What are possible substitutes for P2O5 as a desiccant?

I've been using phosphorus pentoxide as the desiccant while drying my enzymes; however, our stockroom has now run out of the chemical. What are other chemicals that can be used as desiccants that...

12 January 2018 8,072 4 View

How to calculate the average correlation across samples in a meta analysis?

Dear researchers, I am conducting a meta analysis which analyses the correlations between personal values and different well-being scales across different studies and by that across different...

26 December 2017 748 6 View

Have a PCR product obtained with degenerate primers, need to clone. Interesed in one band specifically, how do I choose the ratio product:vector?

I am using degenerate primers to amplify a family of genes. My results in an agarose gel are 6 bands (862pb, 632pb, 408pb, 335pb and 226pb). The bands of interest are 408pb and 335pb. What...

27 November 2017 7,346 3 View

Any one tell me. what is the concentration of below the sample buffer 1x or 10x?

14 July 2017 9,607 3 View

Do I need longitudinal data for path analysis?

Dear researchers, I plan to investigate possible causalities of certain psychological constructs and variables like Engagement, Goal attainment, Well-being... Based on correlation analyses and...

09 November 2016 3,681 2 View

What's the most recent Portraits Values Questionnaire version (PVQ-RR?)?

I would appreciate it and be very happy if anybody could tell me which is the most recent Portraits Value Questionnaire (PVQ) based on Schwartz et al. 2012 with 57 items (not PVQ21 or PVQ40)?...

20 March 2016 2,614 8 View

Almost all soil analyses carried in the laboratory are done on 2 mm sieved soil. Can someone please explain why?

04 July 2014 4,221 14 View

In a potted maize experiment, what is the appropriate way to collect leachate? What is the appropriate leachate storage temperature and duration?

l am about to carry out a pot experiment and l need to know the appropriate way to collect leachate, its storage temperature and duration and the appropriate leachate sampling interval/period. l...

10 March 2014 9,902 10 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 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

Why and how to avoid negative values in optical density by spectrophotometry when measurements corrected by blank solvent?

I am trying to assess chlorophyll-a content from coral tissue using spectrophotometry (with SPECTROstar Nano, BMG). However, I always seem to obtain some negative values in my optical density raw...

20 January 2021 1,542 4 View

Why there is need to calculate the chlorophyll content and chlorophyll index. What protocol should I used for calculating chlorphyll in mustard?

I want to know the best and effective method/ protocol to calculate the chlorophyll from mustard plants. Please suggest some relevant and the methods or protocols from which I can easily calculate...

05 January 2021 9,882 3 View

Hello, can i learn amount of Chlorophyll in Spinach as a mg in 100 grams ?

I have looked on the internet and website but i could not find it so i need yours help please.

26 December 2020 8,354 3 View

What is it the relationship between photochemical efficiency and a chlorophyll a fluorescence in a plant ?

I hope somebody could help in explaining this point

10 December 2020 513 4 View

How can I use the selection matrix in Pymol to select atoms by their number within a cofactor?

I work with photochemical reaction centers (like Photosystems I & II) and it can be helpful to use PyMol to create useful pictures of them. With these proteins, the chlorophylls do all the...

04 December 2020 4,778 2 View

Whats wrong with my cells ? contamination ?

Hello everybody, i hope somebody can help me with my cells. Since 2 weeks they started to change morphologically, as you can see in the two pictures with the smaller magnification (they started...

18 November 2020 1,183 3 View

Simple clearing method for observation of hand-sectioned wheat leaves?

I am using a toluidine blue O preparation for staining different parts of wheat plants to observe a fungus growing in them. This works really well for lighter tissues of the plant! However, the...

27 October 2020 9,159 1 View

Whether it is compulsory to carry out in-situ water sampling and laboratory-based analysis for a water quality study based on remote sensing?

A study assessed the water quality status using a few parameters such as Chlorophyll a, BOD, COD, TSS and etc to determine the pollution level of water bodies using remote sensing techniques....

19 September 2020 4,839 3 View