How long can powdered plants materials take to expire under normal storage conditions?

More Zakari Abdu's questions See All

Warning in Lavaan, variance-covariance not positive definite!, model is not identified?

Dear colleagues, I am new to R, I have been using Amos for conducting CFA but came to learn that when dealing with Likert scale, Lavaan in R is a better tool to do such analysis. I started using...

30 December 2020 5,608 3 View

How to identify Microplastic polymers extracted from biota samples ?

It is suggested that FTIR or Raman spectroscopy is quiet useful to identify Microplastics extracted from samples. But when fibers are microscopic in size , then technical issues rises. For FTIR, a...

08 January 2020 1,312 4 View

How to use SmartPls for structural equation modeling?

I want to conduct partial least squares structural equation modeling for my research in SmartPls software . So, is there anyone who provides me the step by step guide of conducting SmartPls...

28 May 2019 3,292 4 View

Can ANSYS solve on multiple geometries at the same time?

I have 30 different geometries that will be subjected to the same fluid flow physics. Can i solve all at the same time in ANSYS workbench instead of each separately?

01 July 2018 9,685 3 View

Anyone who have RADEP (IMBA) or LUDEP program ?

Those programs (softwares) are used for estimation of lung dose caused by Radon decay products .

01 March 2018 7,794 2 View

What will be the effect in massive MIMO channel modeling if we consider the large scale fading to be different for m antennas at the BS?

In Massive MIMO propagation(channel) modeling the large scale fading considered independent of the M antennas and for all m antennas is the same . my question is what if we consider the large...

06 March 2016 6,183 3 View

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Can Ethovision store the generated data and video recordings directly to NAS system?

The size of data generated by Ethovision is huge. Having NAS system for data storage seems to be a good option, I am wondering whether Ethovision can directly store the data to the NAS system...

27 February 2021 6,350 2 View

Recalcitrant seed short-mid storage method?

Dear peer scientists, Ultradry storage is not suitable for recalcitrant seeds. However, theoretically, if we can stabilize the structure of the subcellular membrane, as well as glassify the...

25 February 2021 2,442 1 View

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

What is the stability of 2 3-dihydroxyquinoxaline in acidic water?

I'm developing a UHPLC assay, and the fluorescent product is 2,3-dihydroxyquinoxaline. The reaction to produce this requires hydrochloric acid (about 1.2 M). Will storage in this acidic...

20 February 2021 5,820 4 View

Opeyemi Saheed Kolawole

Its depends on the storage type or condition of storage. If its properly stored in an airtight container and well packaged that no air enters it will take more than a year.

Nelaturi V Raghavaiah

As long as the materials are not oxidized or preserved under inert blanketing, it works longer time. Otherwise based on corrosion or reaction with ambient air, it should be examined.