Blockchain in Food Supply chain تقنية البلوكتشين في سلاسل الامداد الغذائية

More Haidas Abdelkader's questions See All

How can I recover a borate glass stuck after melting in a platinum crucible, while keeping both the piece of glass and the crucible ?

the glass is stuck strongly in the crucible I want to recover it to make the characterization on the pieces

05 June 2024 3,088 0 View

I need help about rheology, please ?

i need to know the answer of this question please with some references can help me

21 March 2024 4,364 0 View

Calculate congestion with TCP mechanism?

On ns2 simalator, I need to make modifications in the AOMDV protocol. How to calculate congestion for a route using the TCP mechanism.

17 March 2024 3,554 2 View

Reviewing an article in the field of civil engineering ?

Reviewing an article in the field of civil engineering؟ Specialization in building materials Branch of using fibers in compacted earth blocks

02 March 2024 1,596 0 View

Please, can anyone help me to develop a sensor measurement setup for humidity sensitivity?

Currently, I am working on metal oxide and sulfide-based materials doped with various elements using a spray-coated approach. Our main focus is on developing a sensor measurement setup for...

18 February 2024 491 0 View

In ns2, when we want to modify the source code of the AOMDV protocol, how can we duplicate a data packet transfer on a path?

AOMDV protocol

16 February 2024 6,066 1 View

Does anyone use lippmann's 4 point light 10W resistivity meter for groundwater investigation?

Dear colleagues, Does anyone use lippmann's 4 point light 10W resistivity meter for groundwater investigation? for VES AND ERT.

19 October 2023 1,423 4 View

What do you know about spiritual semiology?

Spiritual semiology

08 October 2023 5,884 0 View

How can algeria pentrate the african market despite to bigest countries like china, US ?

we can start with MAURITANIA

29 September 2023 5,102 0 View

To what extent do acts of violence against the killing of the young Franco-Algerian Nael reflect the lack of social cohesion in Franch society?

05 July 2023 4,167 1 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

How to confirm the site-directed mutagenesis result without performing NGS?

I'm cloning a fragment of 3200 nts into plasmid. The cloning was successful, however, 02 amino acids were mutated. Now I want to fix these 02 aa by site-directed mutagenesis technique using...

08 August 2024 4,645 2 View

"A Markov-like Model for Patient Progression"?

A Markov-like Model for Patient Progression" Markov Chain Monte Carlo (MCMC) Markov Chain Monte Carlo (MCMC) is a powerful computational technique used to draw samples from a probability...

05 August 2024 10,079 0 View

Why my colony PCR results of my recombinant bacterial not showing any results?

I am performing ligation of the plasmid and a target gene. The steps I have taken are: 1. Double digestion of the plasmid and target gene 2. Ligation of the plasmid with the target gene 3....

05 August 2024 2,570 3 View

Low-yield gel extraction problem?

I am having an issue with my gel image where my PCR product is not appearing very bright on the gel. When I perform gel extraction, the A260/280 purity value is very low. I used the Qiagen gel...

05 August 2024 9,798 3 View

Identify the eight key processes of excellent supply chain management and discuss how each of these processes impacts the end customer?

Read the journal article by Douglas M. Lambert, “The Eight Essential Supply Chain Management Processes,” Supply Chain Management Review, Vol. 8, No. 6 (2004), pp. 18-26

04 August 2024 9,919 4 View

Does atmosphere affect flow of matter & energy on Earth & flow of energy in biosphere related to the flow of food through a food chain?

How does the atmosphere affect the flow of matter and energy on Earth and flow of energy in the biosphere related to the flow of food through a food chain?

02 August 2024 9,644 0 View

PCR showing no bands - Master mix and primers didn't mix?

Hello everyone, I performed a PCR yesterday, and the results showed no bands on the gel. Of course, I probably missed some crucial steps, like adding my samples to the PCR strips themselves, for...

31 July 2024 2,406 6 View

Dimensions of an MJ Research 96-well alpha module?

Can anyone with an MJ research / BioRad PCR machine from ~2010 or earlier tell me the external measurements (LxWxH) of the removable standard PCR alpha modules that can be removed from a PTC200 or...

30 July 2024 2,867 0 View

How to retain amplicon yield after Ampure bead cleanup, following a 2-stage PCR protocol?

Hello all, I have been trying to follow a 2-stage PCR protocol used to amplify barcodes of a large yeast library, as per Nyugen et al. (2022) -...

30 July 2024 841 2 View