How can I increase the sizes of calcium carbonate hollow microcapsules at the aq media?

More Nadeesha M. Hettiarachchi's questions See All

Variables with different likert scales?

Scenario - There is an IV and DV. IV is measured in 5 point likert scale questions and DV is measured in 7 point likert scale questions. Doubts - 01. Can we run a test like regression analysis...

29 November 2023 4,999 6 View

How to extract intense rainfalls (e.g., annual maximum rainfall for 24-hr duration) from the historical records of daily rainfalls?

Generally, the daily rainfalls are recorded at fixed time intervals (e.g., from 9 am to 9 am). We can find such records of historical rainfalls for centuries. However, in such records, even the...

20 November 2023 5,759 2 View

What are the criteria to be adopted in sizing the gates of salinity barriers constructed across the rivers drain flood prone areas?

I have a problem of designing a salinity barrier on a river flowing through a large agricultural area, susceptible for flooding, to prevent saltwater intrusion to domestic water supply intakes....

02 November 2023 2,087 0 View

Why does culture media turn unusual dark red after 72 hr incubation?

When performing Karyotying using Peripheral blood sample, we add 250 microliters (collected blood into heparin tube) in to 5 ml PB-MAX culture media and incubate it for 72 hrs in CO2 incubator....

15 October 2023 8,533 0 View

Univariate Vs Multivariate Outliers?

There is a common understanding that, in many cases, the absence of extreme values (univariate outliers) in individual variables may reduce the likelihood of extreme values when considering...

03 October 2023 446 10 View

Parametric Assumptions in the presence of mediator or moderator?

In a causal model (such as multiple IVs and single DV) with presence of a mediator or moderator, do we have to consider such mediator or moderator when assessing the parametric assumptions or do...

25 September 2023 3,241 3 View

What is the real cause behind the failure of ‘Yala’ (2023) cultivation under the 'Udawalawa' Scheme? Drought, wrong decision or some other?

This question is mainly targeted to Sri Lankan Engineers, Meteorologists, Agronomists and Lawyers. Even the foreign researchers and consultants who familiar with the system (‘Udawalawa’ &...

06 September 2023 8,987 0 View

What are the adverse effects of using freshwater reservoirs for generating solar energy?

Mine is a tropical country which has developed freshwater reservoirs in different eras of the history (new and ancient), mainly for the purpose of irrigation and hydropower. Those reservoirs are...

26 August 2023 5,463 1 View

What are the laws and regulations available for securing riparian rights of water in river systems and priority order of water using activities?

Udawalawa is a large reservoir constructed in 1960s, mainly for the purpose of irrigation. Later, around 1990s, hydropower reservoir was constructed at the upstream of the same catchment...

11 August 2023 3,799 2 View

Any idea for a BSc Computer Science/ Software Engineering student for the final year research?

As a CS/SE student currently I'm finding an area for research. Currently my idea was to investigate more about recommendation systems using ML and deep Learning, but with the timeline to complete...

06 August 2023 3,862 3 View

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under op microscop?

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under optical microscope?

07 August 2024 2,132 3 View

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds?

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds

04 August 2024 3,019 3 View

Looking for help on sem image analysis?

Hello I am conducting a microstructural analysis of a soil treated with lime. The following sem images are of the untreated s1 and treated soil s3. The untreated soil contains quartz calcite...

01 August 2024 572 0 View

A twin-shaft kiln or a rotary kiln for lime production 1 class? if compressive strength of limestone is low 60 MPa?

My research work is related to the calcination of limestone. I have a complex question and would like to consult with experts in this field. Could you please advise which kiln to choose (a...

18 July 2024 1,390 2 View

Are diatom inclusions found in shellfish shells?

Mangroves were reported to eat into limestone atolls like so much cake - but could it have been diatom partnerships at mangrove roots that ate into the rock? If gypsum formation is a clue, how...

12 July 2024 159 2 View

Does anyone know how to improve calcium-imaging fluorescence with GRIN lenses?

Hey everyone, I've been working with GRIN lenses (Inscopix) for almost 1 year and still had no luck seeing strong fluorescence on them. When I look at them, I can see good blood flow and,...

08 July 2024 5,178 2 View

Initial and final setting times of a calcium phosphate cement?

I'm measuring the setting time of a calcium phosphate cement using an apparatus that records how much resistance a needle (connected to a load cell) encounters over time. This process provides...

24 June 2024 7,534 5 View

What is the best conditions for formation of Chalky Limestone ore deposits?

I want to now more about Chalky Limestone.

03 June 2024 9,726 0 View

Can instant dry yeast provides calcium and nitrogen ?

Is the instant dry yeast, or Brewer's yeast, Saccharomyces cerevisiae, had the ability to provide calcium and nitrogen minerals in addition to ethahnol ? Please support answers with published...

28 May 2024 1,073 4 View

Why does calcium deficiency occur in humans despite eating calcium-rich foods?

About deficiency of calcium

24 May 2024 9,263 2 View