Does South Africa have a dailly reccommended intake (DRI) or upper tollerable levels (ULs) for cobalt and tin?

More Francuois Müller's questions See All

Online Shopping Security Survey?

I would appreciate if you answer my DBA research questionnaire. Thank you all in...

10 February 2021 1,990 3 View

Cross-country research: How can I control for the factor country, although I don't have any hypotheses regarding country differences?

Hello, I am currently preparing a preregistered report for experiments in different countries. I am studying motivations/values of students; therefore, I want to conduct several same experiments...

28 January 2021 5,763 3 View

What are the best ways to get physicians to participate in your online survey study?

Dear fellow researchers, we recently conducted an online survey seeking to ask physicians about their perceptions and adoption behavior regarding telemedicine in primary and specialized care. We...

26 October 2020 1,289 6 View

Why do I get the same model fit indices for bollen-stine bootstrap and ML in AMOS?

Hi Guys, I would highly appreciate some help/input regarding boolen-stine bootstraping in AMOS. Given that my data violated the multivariate normality assumption I have opted to run bollen-stine...

12 May 2020 2,391 3 View

Carbon coating of metal particles?

I am searching for potential project partners (companies) with experience in the carbon coating of metal particles.

03 March 2020 8,208 4 View

Effect of lime, liming in soil?

acidification of soils is a problem for sustainable agricultural use. Liming of soils is a propriate and for a long time used application in agricultur and forest. Therefore new scientific work is...

11 July 2019 10,021 12 View

How much Zombie stain for full blood samples?

Hello, I would like to apply Zombie Fixable Viability stain from Biolegend to rat full blood before FACS analyzing the T lymphocytes. I would add the Zombie stain before the additional antibodies,...

11 July 2018 2,377 2 View

What effect size should I compute for a mixed ANOVA with trimmed means?

I've got a mixed factorial study design, with two between-subject factors, and one within-subject factor. Because my data were non-normally distributed, I've run a two-way mixed ANOVA on trimmed...

28 August 2017 233 7 View

I am trying to remove hMSCs from a polycaprolactone scaffold for use in biochemical assays. Any suggestions?

I need to remove the cells seeded on the scaffolds (PCL) without damaging them or compromising their ability to be tested using SGAG, DNA, and Collagen assays. We have tried just using trypsin...

23 July 2017 1,424 6 View

Zebrafish whole mount IHC of kidney tissue in embryos 72 hpf?

Hey everybody, does anyone have experience with kidney stainings (podocin) in embryos at 72 hpf? Wen want to image preferably the whole embryo without cutting afterwards. I'm really new to this...

21 May 2017 6,938 1 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

How to calculate battery consumption for IoT device?

Hi, everyone I'm working on a privacy-preserving algorithm that will apply to IoT devices. So, I need to measure the power consumption by implementing this algorithm. Any suggestion, advice,...

25 February 2021 8,749 6 View

Resistivity of PVD TiNx thin films vs. N2 flow?

In the PVD of TiN thin films (~100A), I've found the resistivity of the TiN films dropped from ~100 to 60um*cm with N2 flow increasing up to the metallic mode ending point; then the resistivity...

21 February 2021 1,864 2 View

What is the correct common name for Hydrochoerus hydrochaeris?

There are two extant species of Hydrochoerus: Hydrochoerus isthmius, the lesser or Panamanian capybara, and the genotype species H. hydrochaeris. The latter is the more common species of capybara,...

11 February 2021 3,494 14 View

Can explain this diagram to me, is this the average consumption curve for one day or the total consumption of days in a month summed up in specific?

The hourly load curves of the selected household in each season are shown in Fig. 28. Figure 28 shows the demand for electricity in four months on an hourly basis. Can you explain this diagram to...

08 February 2021 657 16 View

Having 2 different substrates under the same deposit conditions (TiN coating) why it is possible to obtain different colours in the 2 dif substrates?

Coating is made by same deposit conditions. substrates are HSS Drill bit and Shim SS 300 series. On the drill bit we are getting some golden color, however on the shim we got no color it is like...

08 February 2021 9,383 7 View

References for relative humidity created by salt solutions at different temperatures?

I understand that the ability of standard salt solutions commonly used to produce a certain relative humidity (RH) in a closed space changes somewhat with the temperature. Where do I find data...

04 February 2021 7,370 4 View

Does Location Map of Informal Settlements in South Africa exist?

I urgently need a map that shows the point locations of informal settlements in South Africa. I am currently working on a study that seeks to relate protests location to the location of informal...

02 February 2021 4,113 7 View

What are the naitve functions of bacterial NRP?

The bacterial NRPs (nonribosomal polypeptides) are famous as clinical drugs such as antibiotics, but is there other native function of these NRPs of bacteria except antimicrobial, because their...

01 February 2021 4,280 1 View

How can I prepare 300mg/L concentration of lead(II) nitrate ( Mol. Wt reffered is 331.21) incoorporated Luria-Bertani (LB) agar ?

I need to check the Heavy metal (lead) consumption assay using microbes at varying concentration in same media. ( 200mg/L to 2000mg/L).kindly help me to clear it.

19 January 2021 1,946 9 View

Manohar Sehgal

RECOMMENDATION OF

Joint FAO/WHO Technical Workshop

Held at

WHO Headquarters,

Geneva, Switzerland

2-6 May 2005

For

African, European, Far Eastern, Latin countries

Co(mg/day)=1.4

Sn(mg/day)=1.8

Francuois Müller

Thank you very much. Is there perhaps a full document that I could download?