Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Efficiency of Proximity Feed Patch Antenna ?

Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...

24 February 2021 7,662 3 View

Please help in identification of this insect?

This insect is minute in size around 1 mm and not clearly visible with naked eye.

22 February 2021 5,907 11 View

What is causing the raw fluorescence to be negative?

Hi everyone, I would really appreciate it if someone can tell me when and why a raw fluorescence starts below zero. In the picture attached below the blue colour curve starts from a negative...

09 February 2021 4,642 3 View

How to match the XRD of a compound for which there is no JCPDS file ? Is there any other characterization to claim the synthesis of desired compound?

I have synthesized LiMgF3 using the starting precursors LiF and MgF2 via solid state diffusion method. Now I am looking for some characterization to claim the desired product, as there is no...

09 February 2021 921 3 View

Can anyone suggest me broad host range fluorescence expression vectors for Gram-positive bacteria ?

Hi everyone, I am looking for fluorescence expression vectors for expression in gram-positive bacteria present in the skin microbiome. I need to tag them with a fluorescence marker and observe...

06 February 2021 2,566 4 View

Are the hyperspectral image datasets which are publicly available at ehu.eus website atmospherically and geometrically correct?

I've come across a couple of publicly available hyperspectral image datasets from the website http://www.ehu.eus/ccwintco/index.php/Hyperspectral_Remote_Sensing_Scenes Now, my concern is...

05 February 2021 3,550 1 View

Any recommendations for open-source survey form builder, which has option for semantic differential scale questions apart from Likert scale?

Asking this as Google forms doesn't allow multiple items in a semantic differential format.

04 February 2021 5,869 4 View

Does xylene and ethylbenzene contribute/affect COD and BOD reading in wastewater?

I'm currently troubleshooting a series of 3 activated carbon beds. The carbon beds are using Granular Activated Carbon(GAC). This activated carbon bed set up is to treat wastewater Chemical Oxygen...

20 October 2020 3,531 3 View

Whether it is compulsory to carry out in-situ water sampling and laboratory-based analysis for a water quality study based on remote sensing?

A study assessed the water quality status using a few parameters such as Chlorophyll a, BOD, COD, TSS and etc to determine the pollution level of water bodies using remote sensing techniques....

19 September 2020 4,839 3 View

Is there any clear cut demarcation in the type of parasites that can be grown in culture flasks with vented and non vented caps respectively?

While working with Leishmania donovani , I got to know that it is grown in non-vented culture flasks with M199 media (as preferred in my lab) and kept in BOD incubators. Some researchers also...

06 July 2019 9,014 1 View

What should be the feed BOD limit for RO?

Hello friends, I am working on the design of the RO system for mining wastewater. I have 115 ppm of BOD in feed. I am always confuse about what should be the maximum limit of BOD in RO feed....

04 May 2019 3,434 3 View

What is the permeable limit of Biochemical Oxygen Demand (BOD) in wastewater discharge?

Biochemical oxygen demand (BOD) is a chemical process for determining the amount of dissolved oxygen required for aerobic biological organisms in a body of water to break down (disintegrate)...

03 April 2019 9,494 64 View

What should be ratio of BOD/COD for the treatment of wastewater by biological technique?

I am planning to treat the real effluent from industrial site by biological technique in Bioreactor. What should be ratio of BOD/COD for the treatment of wastewater by biological technique?

03 April 2019 5,048 4 View

Should I take a COD and a BOD sample for testing pollution?

A hot pink dye was released into a slough system by a green house to dye flowers for Easter. Should be take a BOD and COD to determine the effects of this pollution?

03 April 2019 9,131 3 View

Should I estimate the oxygen requirement in wastewater treatment (both biological and industrial effluents) based on BOD or COD?

Should I estimate the oxygen requirement in wastewater treatment (both biological and industrial effluents) based on BOD or COD and what would be the ratio? Also how should I deal with oxygen...

19 March 2019 2,855 3 View

Should I estimate the oxygen requirement in wastewater treatment (both biological and industrial effluents) based on BOD or COD?

Should I estimate the oxygen requirement in wastewater treatment (both biological and industrial effluents) based on BOD or COD and what would be the ratio? Also how should I deal with oxygen...

02 March 2019 1,403 4 View

I'm looking for Standards discharges of treated wastewater into the receiving environment in the Ontario Region, Canada?

31 December 2018 8,099 4 View