How can I selectively dry etch Ti on a polymer substrate?

24 February 2021 5,378 1 View

How to identify when a gaussian program is about terminate normally?

Dear all, I am trying to optimize a bimetallic complex using # opt=tight b3lyp/lanl2dz scf=qc geom=connectivity. The program is running for around 5 days but the size of the .chk remains same...

05 February 2021 8,721 3 View

How do you create a 0.5M EDTA disodium salt solution at pH=7.4?

I have been trying to make a 0.5M EDTA solution by dissolving EDTA disodium salt dihydrate in 500mL of purified water and adjusting the pH to ~8.0 so that the salt dissolves. To aid in the...

12 October 2020 3,242 2 View

How can I increase the length of DNA fragments recovered from QIAamp DNA Micro Kit?

Hi everyone. I'm performing DNA extractions for pools of ~10 individual Daphnia magna (water fleas) using the Qiagen QIAamp DNA Micro Kit. I use a pestle to homogenise the Daphnia before entering...

07 September 2020 9,956 1 View

Dual feed dual polarization antenna can operate at same frequency?

I have been working on an array of simple rectangular microstrip antenna (not aperture coupled) for dual polarization with dual feed. I am finding it very hard to make the operating frequency of...

06 August 2020 8,124 3 View

Where could I find3D resistivity/conductivity (ERT) opensource data?

Hi, I would like to know whether is there any open source 3D inversion resistivity/conductivity geophysical data (ERT) available. If yes, how to access it?

06 August 2020 8,209 3 View

Is it normal to get different results when you try to simulate a paper your are basing your research on?

I am simulating AODV and AOMDV in NS 2 to compare their performance in terms of Packet Delivery Ratio (PDR), Throughput, Delay and energy consumption, in order to propose a better algorithm. The...

18 July 2020 9,755 9 View

How can I assess a method that returns high-expressed genes?

Hello, I working with a method that finds high-expressed genes in a single-cell experiment. How can I assess such method? I know I can compare it with the ones in literature (t-test, regression),...

22 February 2020 3,023 2 View

How should I hydroxylate tungsten powder for organosilane grafting?

I am having trouble depositing MPTMS/APTES onto tungsten and I am concerned there are not enough hydroxyl groups on the powder surface. So far I have been exposing tungsten to water to hydroxylate...

04 February 2020 4,677 2 View

Is it possible to perform a meta-analysis for an index value?

Dear researcher community. I want to ask if it's possible to perform a meta-analysis in an index, I mean, in value without standard deviation. For instance, in the regression model, many indexes...

04 December 2019 3,797 1 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

Is there a recitation score bank system for fair evaluation and assessment of student recitation?

In actual and virtual class, even if there is rubric for recitation, students may still fail to receive fair grades or scores. Others are active in recitation and others are not or others may fail...

26 February 2021 8,387 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View