Is it possible to obtain a negative cronbach alpha?

Good evening everyone. If a questionnaire has 4 factors measuring different constructs as for example CAMI questionnaire measuring attitudes toward the mentally ill that has four factors:...

18 February 2021 3,223 3 View

What is exact impact of pH on preparation method of nanoparticles? why some nanoparticles are synthesized in ACIDIC pH while others in alkaline pH?

I am trying to prepare Cerium oxide nanoparticles. literature suggested the acidic pH of the reaction. what is the reason? what is the mechanism if so

28 November 2020 8,825 2 View

Estimate / Predict remaining useful life of a bearing without data of previous failure?

Hello, I am trying to write a program in Matlab to estimate the remaining useful life of a bearing without data of a previous failure. Do you think this is possible? I was thinking to use the...

27 November 2020 9,863 3 View

Two way ANOVA with non normal data?

Good afternoon everyone. I would like to know your oppinion or advise for the following: I would like to compare the results of a variable measured with a likert scale. I have two (or three)...

19 October 2020 4,564 4 View

Comparing two independent groups with very different sample size?

Hello eveyone. I would like to know your oppinion on the following. Do you think that it is adequate to compare two groups with very different sample size and non normal sample distribution? for...

19 October 2020 8,475 4 View

Total Alkaloid Content?

Can someone suggest a simple calorimetric assay protocol for determination of total alkaloid content of plant extract?

10 September 2020 8,835 3 View

What are the environmental problems caused by phosphorus pollution ?

What are the environmental problems caused by phosphorus pollution ?

27 July 2020 948 34 View

What are the harmful effects of nitrates higher concentration on public health?

15 July 2020 3,900 10 View

What are the best methods of water management in the case of an agricultural drought ?

The importance of water resources is evident, and its management through all levels is imperative, especially in arid and semi-arid countries where water demand is highly required for irrigation...

10 July 2020 6,153 7 View

What are the advantages of using renewable energies for the desalination of seawater?

what are the advantages of using renewable energies for the desalination of seawater?

28 June 2020 6,093 3 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

Which Journals would you advise to submit a Letter which briefly talks about neurosurgical treatment of neuro-oncological patient during Sars-COV-2?

Possibily not an open access journal which does not add any publishing costs once being accepted. Thank you in advance

09 February 2021 717 6 View

Anyone has an experience extracting proteins from rectal swab samples?

I am working with rectal swab samples in the field of colorectal cancer research. Does anyone have experience (or can point towards any relevant literature) of specifically working with proteins...

02 February 2021 3,622 3 View

The First Survey Addressing Patients with BMIs over 50?

Dear Bariatric Surgeons, The importance of obesity management in patients with BMIs over 50 has not been completely addressed and it should be considered separately from patients with morbid...

20 January 2021 2,748 1 View

Is not POLITICS involved in science these days?

Respected Fellows, First and foremost, wish you all, all the very best for the year 2021!. I was formerly a faculty member in Canada (2006-2011, Assistant Prof.), then came back to my...

04 January 2021 7,886 4 View

Are OAE publishers genuine or predatory publishers ?

I received an e-mail from OEA publishers to submit an article for their special issue on Oral and Maxillofacial Surgery. I was naive enough to succumb to this request. I submitted my article which...

27 December 2020 6,454 3 View

What is the recommended age limit for primary posterior capsulotomy in pediatric cataract surgery?

In our centre, we are doing PPC even for older children upto 10-12 years of age and there seem to be no harm, rather beneficial and good outcomes. Please share your experiences.

27 December 2020 4,268 6 View

Why is SV40 not considered an oncogenic virus?

Hello, SV40 is not considered an oncogenic virus in this review:Oncogenic viruses and cancer Why is SV40 not considered an oncogenic virus when it produces the large T antigen, which is...

04 December 2020 8,374 5 View

What is Surgical Plume? Is there any chance of cancer spread through plumes during cancer surgery? Any evidence?

Surgical plume or smoke are produced by use of electrocautery, laser and high energy devices during surgery. They may contain toxic materials including bacteria, virus and viable cancer cells....

25 November 2020 4,523 4 View

What are your experience with 96-Transwell formats?

I am planning to use a 96-well format for an experiment as this will greatly improve throughput and expedite treatments. I will be using Caco-2 cells cultured apically. I need them to form...

02 November 2020 5,287 3 View