How can I calculate C-statistic for specific time interval in STATA?

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How to synthesis the uniform polyamide active layer on the aminated PVC support layer?

we work on forward osmosis membrane. the support layer is aminated PVC and the active layer is polyamide. for synthesis of polyamide , I follow the routine methods of interfacial polymerization...

19 April 2024 3,574 1 View

How to detect Asparaginase resistant cell lines?

Dear friends How to detect Asparaginase resistant cell lines? Do you know cell lines resistant to asparaginase? Is there any protocol to detect the resistance?

20 August 2023 7,261 1 View

Can siRNA be delivered into human normal/leukemia cell?

Hi Do you know that siRNA can be inserted into the white blood cells of normal people and leukemic people sample?

11 July 2023 7,580 1 View

Recombinant protein protocol?

Dear colleagues Please suggest a comprehensive and complete protocol for the production and purification of bacterial recombinant protein in E.Coli BL21 strain.

10 July 2023 8,318 2 View

Do you have a standard scfv production protocol?

I want to make scfv from E.coli, but I can't find a standard and clear protocol. Please help me if you can🙏

20 September 2022 2,378 1 View

What type of phosphate buffer is suitable for extracting protein from the plant?

What type of phosphate buffer is suitable for extracting protein from the plant I intend to extract and measure protein from plants by using the Bradford method. In order to do this, I need a...

13 March 2022 2,771 6 View

Any solution to find the optimal point?

Dear all, I am working on a string matching project. I want to find the best and most appropriate index in each array of the string to divide it into two groups so that it has the lowest cost if a...

02 February 2022 9,481 9 View

How to calculate standard deviation from confidence interval in large sample size studies?

we are conducting a meta-analysis on community-based intervention trials. Some of the studies don't have the standard deviation, but only the 95% CI and mean. Sample sizes are large. I have tried...

27 December 2021 6,179 3 View

How to define the major predictors, confounding variables, and collinearity of predictors in clinical prediction model?

We are trying to run a clinical prediction model (based on regression analysis) to predict the effect of some dietary and non-dietary factors on mortality from a specific disease in a cohort...

01 December 2021 7,161 2 View

What is the best amount of EDC as a crosslinker?

Dear all, In synthesis process of curcumin loaded albumin nanopaticles, when I used EDC as crosslinker, surprisingly it caused intense aggregation! Actually I used these methods...

02 October 2021 2,569 3 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 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

Is it possible to use the Fused Deposition Modeling (FDM) to additively manufacture interconnected porous structure generation of >100-200 micrometer?

Usually, additive manufacturing techniques like SEBM, SLS, and SLM are used for interconnected porous lattice structure generation with sizes of >100–200 micrometers. Can the Fused Deposition...

09 August 2024 7,892 0 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

Can you suggest reliable sources defining "3D mesh" and "3D city models"?

Dear fellow researchers, I am currently working on a paper where I need to provide a reliable reference that defines and distinguishes between 3D mesh models and 3D city models. Although I am...

06 August 2024 9,986 2 View

Please explain how the plastic input value should be considered from the true stress-strain curve for the bilinear elastoplastic material model ?

I am working on Abaqus/Explicit(Quasistatic ) for the deformation of the auxetic structure model. Please explain how the plastic input value should be considered from the true stress-strain curve...

05 August 2024 454 3 View

What are the shear and normal stiffness values of an LLDPE liner in 3D numerical modeling of a stockpile?

I am seeking experimental or applicable data for the liner (LLDPE) interface in FLAC3D numerical modeling of a large stockpile. Could you please recommend suitable references? The preferred data...

05 August 2024 3,665 0 View

Is it necessary to covary exogenous constructs in a structural model?

I am working on a SEM model where i have 7 latent variables (6 exogenous and 1 endogenous). In AMOS when I co-vary the exogenous constructs, only 2 paths are coming significant out of 6. But when...

03 August 2024 6,028 4 View

Given the current level of natural phenomena cause by the climate change and environmental pollution, will the AI find the technological solutions?

AI-driven technologies offer previously unheard-of capabilities to process enormous volumes of data, extract insightful knowledge and improve predictive models, according to the UN’s World...

31 July 2024 9,733 3 View