How to plot the 3D structure of graphene with the ChemOffice 2015?

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Has anyone used MALDI-TOF to analyze DNA molecules （MW > 20000）?

I am seeking advice on the matrix and solvent conditions.

29 May 2024 2,360 0 View

What are the potential complications associated with uncontrolled hyperglycemia in the perioperative setting?

What are the potential complications associated with uncontrolled hyperglycemia in the perioperative setting?The Impact of Hyperglycemia on Perioperative Outcomes in Pat...

07 May 2024 4,190 1 View

The following three papers are widely cited by geodesists, but they are all written in German; can anyone help with translating them into English?

Meissl P (1962) Die innere Genauigkeit eines Punkthaufens. Österreichische Zeitschrift für Vermessungswesen 50, Nr. 5, S. 159–165, Nr. 6, S, pp 186–194 Meissl P (1965) Uber die innere Genauigheit...

04 May 2024 6,178 0 View

Dear， How to define sexual spore?

I found it very difficult to define it precisely. Microspore and megaspore of ferns or seed plants are sexual spore? Because the fertilization happened for a long time before the formation of...

27 April 2024 3,077 0 View

Would like to learn about Auguste Levasseur, Lafayette's friend and author of the book on their visit to the United States in 1824-25?

The Marquis de Lafayette is "returning" to America again this fall. After serving in the American and French Revolutions, he returned to America in 1824-1825 and toured some 25 states. This...

19 April 2024 4,979 0 View

How to effeciently connect triethoxysilane to glass?

Hi all, I'm Dabin Xie from Zhincai Tech, a small research-driving company in China. I'm currently trying to modify glass with a single layer of silane whether hydrophobic or hydrophilic, like...

08 April 2024 2,628 4 View

Temperature difference is insufficient to perform the heat transfer ?

How to solve this problem when Aspen economic evaluation was performed? It said "Temperature difference is insufficient to perform the heat transfer."

06 April 2024 7,291 3 View

Partial trace over a finite system or finite-approximation of an infinite system, which one is preferable?

When dealing with composite systems comprising a finite subsystem and an infinite one, the aim often involves numerically analyzing specific properties, such as entanglement entropy between these...

02 April 2024 1,640 1 View

Which software is better for simulating superconducting magnetic fields?

If I want numerical simulation software to simulate superconducting magnetic shielding, which software is better for simulating superconducting magnetic fields?

25 March 2024 5,589 1 View

Is there any simple online model for pesticide environmental and human risk analysis using questioner ?

model methodology analysis inputs out puts and other related issue

17 March 2024 1,733 1 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

CAD File of human's & rat's respiratory airways ?

Dear all, I am working on particle deposition in human's & rat's respiratory airways using CFD and I am looking for the 3D CAD file for my simulations (STEP or IGES format). If somone has such...

29 July 2024 1,092 2 View

Is the zero-zero component of the metric tensor equal to 1 for accelerating reference frames?

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24 July 2024 1,608 15 View

MDCI module in Orca software?

Dear Researchers, My question is associated with the "MDCI" method in Orca. Please let me clarify my question using a simple example: Suppose we are going to perform CBS extrapolation using "!...

21 July 2024 1,632 0 View

What is wrong with my input file?

im studing gaussian 16 with reading paper about I-131 Metaiodobenzylguanidine in the paper "In a similar vein, nuclear magnetic resonance shielding values were investigated using the widely...

16 July 2024 6,040 4 View

I came across oscillations in a pressure profile for a pipeline flow along the axis of a cylinder, how do I prove that these are not numerical err?

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13 July 2024 6,296 5 View

Which book and outline do you recommend for computational physics course for BS level ?

students already took 1. numerical methods 2. programming language 3. Probability and statistics

09 July 2024 6,271 3 View

What is the recommended type of pseudopotentials for QE?

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09 July 2024 9,541 5 View

What is the most simple language and character in the world?

Dear colleagues, As well known, we can deliver messages in different languages and characters, including Chinese, English, Latin, binary and decimal codes (if with a converter) and many other...

08 July 2024 5,422 13 View

Bojidarka B. Ivanova

Mr. Xie,

There is unable such as transformation.

F.-Q. Xie

Dear Mrs. Ivanova,

Thank you for your information. I tried many times with different approaches but always failed.

With best regards

Fangqing Xie

Md Tawabur Rahman

Is the Chem 3D software free to download? I am looking for such a software as well. Thank you.