General Discussion

General discussion about plants and measurement methods, environmental applications, ideas for new measurements or changes to existing ones, ideas about the new hardware or software, etc.

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Recommendations or experiences with any inexpensive android phones.

By Craig Whippo

More than half of my students have iphones. For these students, I purchased a couple of neutab android tablets that have built-in gps to connect to V1.0. These tablets are too big to hold in one hand, screen glare is an issue, and the blue-tooth connectivity is easily disrupted. I'm thinking about replacing these tablets with some inexpensive android phones. Does anyon... read more
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1 day ago


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PCA and data analysis

By Andriy Herts, Nataliia Herts

I try using PCA (Principal component analysis) in the analysis of data. For example, Phaseolus vulgaris + molybdenum (difer. concentration) in lab (fig.1) and field (fig.2). Interesting not only influence of molybdenum as well as changes in correlated variables in lab and field plant especially!!! Interestingly grouped options. Is not it. Who uses and how interpret PCA? ... read more
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3 days ago


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Cannot find qL, qP, ECSt, vH+, gH+ data in data viewtable in spreadsheet

By Weizhen Liu

After updating to latest Leaf Photosynthesis MultispeQ V1.0 protocol, I cannot find qL, qP, ECSt, vH+, gH+ and many other parameters that previous Leaf Photosynthesis MultispeQ V1.0 protocol provided in data viewtable in spreadsheeteither online or download to local computer. Does anyone else have the same situation as me? How can I get these data? Thanks.
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20 days ago


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How to identify and use already developed protocols by different people?

By Habib-ur-Rehman Athar

Different people developed different protocols and and long list is available. I selected to use but none of them is working. Either they are not developed or I am not properly using. I want to use NPQ quenching analysis, DIRK protocols. I am not familiar with program coding so I want to use already developed protocols by other peoples. MultispeQ has only one functional pro... read more
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Jan 2018


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How to cite the instrument for publications in a correct way...?

By Milan Urban

Hello, the question is, how to cite this advice correctly for a publication purposes? MultispeQ (PhotosynQ, ?) Thanks for reply
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Sep 2017


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How to interpret data correctly from field?

By Andriy Herts, Nataliia Herts

The parameters (Phi2, PhiNPQ, PhiNO) are dependent on the level of lighting. If you measure plant in the field for several hours, for example from 10 am to 1 pm . (Fore example: Option 1 - in 10.00 am; Option 2 - in 10.20 am .... Option 10 - in 1 pm et all. ) How to correctly interpret data for option 1 and 10? PAR in 10.00 am - 600, but in 1 pm 1600 unit . Phi2 in10 a... read more
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Jul 2017


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How to see previous data from different projects

By Habib-ur-Rehman Athar

Hello I want see data set of previously taken data by other members. I opened the project heat tolerance in wheat but unable to see any kind of data. What to do for this purpose Habib
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Aug 2017


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any news about the delivery ?

By Itay cohen

hi guys, anyone knows when the MultispeQ will be ready and shipped?
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Jan 2017


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Carbon evolution and active carbon in soil (measurement methods)

By Andriy Herts, Nataliia Herts

Hello! I want to start the study of soil. Do I understand correctly: 1. I can measure carbon evolution from soil - soil (on the field, for example)+ chamber+CO2 sensor. After this converts CO2 ppm in kg C m-2 day (don't need of calibration ) 2. I can measure active carbon - example of the soil + chamber+CO2 sensor + potassium permangenate solution (need in calibration) Th... read more
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Jan 2017


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Problems with data visualization after measurement

By Oscar Goni

Hi! My labmate and me are observing a curious problem with the data visualization. Suddenly, we can't see numerical values after performing either a quick or a project measurement. Instead that, we can see a graph and the values NaN (see attached file). However, if we keep the project measurement, we can see the numerical values in our Dashboard. It is a strange issue beca... read more
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Jul 2015


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Light leakage

By Chris Fastie

Are there data about the effect of light leaking into the chamber during measurement? If the sun is shining right on the gap, there could be variable amounts reaching the light guide. I was thinking about attaching a little black felt skirt that blocked at least the direct sunlight from hitting the gap. But maybe the light guides are not sensitive to light coming from the s... read more
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Jun 2015


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Suggestions for improvement of documentation

By Bob Haugen

https://plus.google.com/u/0/113885495827197979519/posts/7ssSxxNX3dL
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Apr 2015


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App Feedback

By Anthony Krumeich

Is this the most constructive place to provide feedback about the app? Let us know where you'd like us to put it. Right now, initial feedback was going to be about "My Projects" actually not filtering down the project list, so as a result you have to search for it. That wouldn't be a big deal, except that if we want to use a separate project for different protocols switchin... read more
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Jan 2018