H2O2 scavenging activity problem??

When I do the test of plant against the free radicals of H2O2 the control had a value about 0.9126 The critical point is when I prepared the extract with DMSO the absorbance appear more than 2...

09 February 2021 6,430 2 View

Differnce in brain structure or function in faller versus non-faller older adults?

I am looking forward to an article that addressed the difference between anatomy or physiology of the brain in faller versus non-faller older adults.

06 April 2020 2,165 5 View

How to stabilize silver nanoparticles using the plant extract?

Can anybody help me to maintain these nanoparticles for longer periods and how to dry without disrupting the stability? I have synthesized silver nanoparticles using green synthesis methods using...

12 March 2020 3,082 3 View

What are the criterion for selecting switching frequency in a power electronic converter?

Switching frequency is usually a free parameter in power electronic converter designs. Some example criterion can be: 1 - Resonance frequency or soft-switching criterion 2 - Efficiency...

06 November 2019 4,162 16 View

How to modifie TiO2 NP to be hydrophil?

I have TiO2 Nps and I have to disperse them in water, but they are not stable. I am trying to use citric acid as modifier to change surface properties of TiO2, but I don't know how and I didn't...

21 July 2019 5,304 3 View

Matlab code for solving the schrodinger equation with transfer matrix method?

hi i need souce code and simulation of solving schordinger equation using the transfer matrix method thx for help .

12 May 2019 154 1 View

Mineral percentage in XRD?

Dear All I have a carbonate rock and XRD analysis shows the type of minerals in it. but how can I measure the percentage of each mineral with XRD peaks?

15 April 2019 8,295 5 View

How can I use Artificial Bee Colony(ABC) Algorithm or other algorithm for feature selection ?

How can i use Artificial Bee Colony(ABC) Algorithm or other algorithms for feature selection ?

30 November 2018 7,651 9 View

Do Fe3o4@TiO2 and Fe3o4@ZnO core/shell Nanocomposites stable and dispersible in a water solution?

stability and dispersion of these nanocomposite in a solution like brine water are under question. how much time it takes to collapse? I mean agglomeration of particles. I want a solution or...

03 November 2018 4,281 7 View

Hello every one: Im working on Gtn damage model, How can I get the model parameters from inverse methode? Idont like use metallograghic images.

30 April 2017 5,669 2 View

Isolates of Hymenoscyphus fraxineus?

Dear Dr. Cai, my name is Simone Prospero and I work in the team of Phytopathology at the Swiss Federal Institute for Forest Snow and Landscape Research (WSL;...

01 March 2021 1,133 1 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View

Is it possible to set a breakpoint at a specific DYNAMIC instruction using the GNU Debugger (GDB)?

Using GDB, it is straightforward to debug and monitor a target program by setting a break-point at a specific instruction, since the instruction addresses are known. However, we have two...

24 February 2021 1,598 2 View

IF troubleshooting: looking at an intracellular protein that localizes to the cell's and how to reduce increase in signal due to cell ruffles?

I am currently trying to stain for PI3KBeta in MDA-MB-231 cells. My current issue is that 1) beta stains all over the cell and 2) there is an increase in signal at the edge of the cell and this...

24 February 2021 8,582 1 View

Does PHA-P stimulate the proliferation of lymphocytes from mice?

Hello, I will start performing MLR using lymphocytes from mice's spleen and I would like to know the better way for the stimulation. If is using PHA-P or CD3/CD28? I would like to know as well if...

23 February 2021 5,476 4 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