How to calculate maximum allowable torque in a stem of a ball valve?

11 September 2023 0 7K Report

I am trying to calculate maximum allowable torque for the stem shown in the figure.

Badges
Science topic

More Sunil Kumar Mahato's questions See All

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View

Does soybean seed coat or cotyledon contain chlorophyl or flavonoids? What types? determined by paper chromatography? other methods (high school lab)?

Am trying to develop a lesson/lab to determine and compare antioxidant properties of soybeans of various colors. Preference would be low tech and low cost. Any assistance is greatly appreciated.

25 July 2024 7,498 2 View

Does post-translational protein modification cause devisions on observed pI verses calculated pI?

In running two-dimensional gel electrophoresis on bacterial protein, some spots that appear to match a protein sequence have a significantly more acidic isoelectric point than the calculated pI....

24 July 2024 8,076 3 View

How I can add anew research in my account ?

Their is new research published in the biological control journal, and I am one of the authors. I want to add it to my account at researchgare. How can I do this?

21 July 2024 7,545 0 View

Can Document Analysis be used as the only method of research?

I have read that it is better to use other research methods alongside document analysis for triangulation, although it can also be used as a stand-alone method.

18 July 2024 4,218 0 View

How much sample we are required to do a pilot study for standardized an Achievement Test?

I am conducting a study on Effectiveness of e-content on academic achievement of secondary school science student.

17 July 2024 5,633 4 View

Masonry Interaction Module ABAQUS?

I am simulating interlocking / dry stacked masonry in Abaqus. I am using a friction coefficient of 0.6 for my model as it is stated in the previous research as well as in the base paper. The...

16 July 2024 5,047 0 View

What is wrong with my input file?

im studing gaussian 16 with reading paper about I-131 Metaiodobenzylguanidine in the paper "In a similar vein, nuclear magnetic resonance shielding values were investigated using the widely...

16 July 2024 6,040 4 View

Can ROBINS-I be used to measure risk of bias in single-arm studies?

I am doing a systematic review, and I am measuring risk of bias with RoB2 for RCT, and ROBINS-I for non RCT. My questions is, for single arm studies, can I use ROBINS-I? I am not sure how to...

14 July 2024 3,570 5 View

In WECS : Gain values for conversion of PMSM rotor speed(rad/s) to p.u. input to wind turbine and Torque(pu) of WT to input of PMSM-Torque (Nm) ?

I am working on developing a MATLAB Simulink model of Wind turbine with PMSG followed by MPPT Boost converter. I have gone through so many literature and videos but I am not finding clear solution...

03 August 2024 888 1 View

Why am I seeing only one initial maximum in torque-time curves for the fusion of PVC in a Brabender?

We're studying the stability and fusion behavior of multiple PVC compounds in a Brabender. After a few trials, we set the temperature at 195 °C and the rotor speed at 70 rpm. Samples differ in...

12 July 2024 2,768 1 View

I have NMR,Mass spec,IR and uv of a mixture of three unknown compounds from natural products.I am attaching the data who can help me elucidate?

I isolated a mixture of three compounds from the stem bark of a plant . I have NMR, Mass spec, IR, and UV data. There are a lot of things I can't make meaning out of. Kindly help me with the...

02 July 2024 9,531 4 View

What is the best part of a leaf to study the anatomy of monocot and dicot plants?

The first 1/3 of the leaf (near the stem), the middle 1/3 of the leaf, the last 1/3 of the leaf Monocot: Corn Dicot: bean

28 June 2024 2,607 4 View

How to reduce the material coming out of the torque rheometer?

A physical mix was in vitro evaluated on a torque rheometer. The composition was predominantly recycled polypropylene (PP), yet the melt flow index (MFI) was found to be excessively high....

25 June 2024 10,154 0 View

What effect may biochar types produced from grape stems, leaves, onion leaves and stems, asparragus and cantaloupe stems/leaves have on a harvest?

I'm interested in knowing the differences in the effects caused by four different types of biochar: cantaloupe leaves/stems, onion leaves/stems, grape peels/stems/leaves and asparragus...

28 May 2024 4,907 0 View

I need guidance how to design primers for miRNA?

The size miRNA is 89 bps and the primers I have designed (using traditional method for designing gene primers) should give an amplified product of 71 bps. But I am getting product of higher...

23 May 2024 7,570 3 View

Is it possible to have less than 1 % moisture content?

I am carrying out pharmacognostic analysis (physicochemical evaluation) of a stem bark of a ficus specie.

28 April 2024 6,130 0 View

What are the challenges faced by anaesthesiologists in the management of chronic pain, and how can these challenges be addressed?

Understanding Pain Physiology: Foundations for Effective Chr... What are the challenges faced by anaesthesiologists in the management of chronic pain, and how can these challenges be...

20 April 2024 3,314 1 View

What does mean phonosurgery ?

الكل صور تسوّق فيديوهات أخبار كتب خرائط Google شؤون مالية أدوات البحث ملاحظات Phonosurgery is composed of procedures that are intended to maintain or improve the quality of the voice by correcting...

10 April 2024 7,796 0 View