ICRP annual dose limit for occupational worker averaged over a period of 5 years is 20mSv. Is it according to the ALARA principle?

Working in an FDG production lab for around 20 years. Does the annual ICRP dose limit of 20mSv/Year avegraged over 5 years (and in a single year upto 50mSv) is following the ALARA principle. Does...

07 December 2020 404 5 View

Vaccine for Coronavirus?

I thought the last couple of days and think that if we know the source of coronavirus then it will help in one or another way. Suppose / for example, if the virus came from snake or mouse then...

11 February 2020 4,893 17 View

How one could extract 100% (or near to 100%) DNA and RNA from a known bacterial biomass and quantify?

Here 100% extraction means a total DNA and RNA extraction from known bacterial biomass. This will not for the quality check but more on the quantification. If there is any published method...

28 January 2020 2,302 2 View

I am trying to do retroviral transduction using platE cells but its not giving good efficiency.Can somebody suggest ways to increase efficiency ?

I use Fugene-3ul/well, pclEco- 0.8ng and polybrene 2ul/ml from 5mg/ml stock. I usually spinfect T cells that I have activated a day before with anti-CD28 and anti-CD3. I use MigR2 plasmid with my...

08 December 2019 3,649 3 View

Is it possible that the peak current of an electrochemical process increases at pH 5, decreases at pH 6 and increases at pH7 further?

In one of our electrochemical experiments, we observed that the peak current suddenly decreased at pH 6 and then again increased at pH 7. Does this relates to the stability of the complex at pH 5...

21 November 2019 7,548 2 View

What is sampling error ?

By using Yamane's formula the required sample size was 250; now can I select 300 samples for performing a logistic regression ?

19 September 2019 6,202 8 View

Calculating sample size for descreptive survey among nursing students on EBP in nursing. I am not getting prevelence rate for sample size estimations?

I am trying to calculate sample size for my descreptive survey study aiming mesurement of nursing students knowledge and attitude of evedence based practice in nursing. Plz suggest me prevelence...

03 April 2019 7,107 4 View

Why should we use the universal gas constant R when dealing with liquids?

The universal/molar/ideal gas constant R is given by R=PV/nT; this however, on an average, is considered true for gases (H2, O2, N2 are excluded). Involving R in chemical expressions dealing with...

21 January 2019 154 11 View

How 4-fluoroindole and 5- fluoroindole differ energetically?

I have measured fluoresence spectra of 4-fluoroindole and 5-fluoroindole in alcoholic medium at room temperature. The fluorescence intensity of 4-fluoroindole is reduced ~100 times than that of...

06 February 2018 3,247 5 View

What is the reason behind the structered shape in emission maxima of some aromatic amino acids in some solvents?

06 July 2017 3,448 2 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 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

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is involved in morphological changes of SEM images of a substance?

In the sem analysis of CaCO3 nanaoparticles, the morphology images showed spherical shaped particles but the proposed morphology for these type of nanoparticles is trigonal. I prepared the...

01 March 2021 1,960 4 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 3 View