shaik kareem ahmmad
@mjcollege.co
associate professor
muffakham jah college of engineering and technoloyg
Scopus Publications
Scopus Publications
Hanan Al-Ghamdi, Norah A. M. Alsaif, Shaik Kareem Ahmmad, M. M. Ahmed, M. S. Shams, Adel M. El-Refaey, A. M. Abdelghany, Shaaban M. Shaaban, Y. S. Rammah, and R. A. Elsad
Springer Science and Business Media LLC
B. Sreenivas, Shaik kareem Ahmmad, Y.S. Rammah, and P. Hima Bindu
Elsevier BV
Shaik Amer Ahmed, Shaik Kareem Ahmmad, Y. S. Rammah, S. Talaat, J. P. Pramod, and Kaleem Ahmed Jaleeli
Springer Science and Business Media LLC
Shaik Kareem Ahmmad, G. Nataraju, Nazima Siddiqui, Mohammed Muzammil Ahmed, M. A. Haleem Rizwan, Mohamad Raheem Ahmed, and A. S. Sai Prasad
Springer Science and Business Media LLC
M. M. Ahmed Mahmoodi, Shaik Kareem Ahmmad, G. Ramadevudu, Y. S. Rammah, and J. Laxman Naik
Springer Science and Business Media LLC
Norah A.M. Alsaif, M. Muzammil Ahmed, Hanan Al-Ghamdi, A.A. El-Hamalawy, W.M. Badawy, Y.S. Rammah, and Shaik Kareem Ahmmad
Elsevier BV
Norah A.M. Alsaif, M.S. Shams, Adel M. El-Refaey, Y.S. Rammah, Mousmi A. Chaurasia, Nazima Siddiqui, R.A. Elsad, and Shaik Kareem Ahmmad
Elsevier BV
Norah A.M. Alsaif, Shaik Kareem Ahmmad, Z.Y. Khattari, A.M. Abdelghany, Adel M. El-Refaey, Y.S. Rammah, M.S. Shams, and R.A. Elsad
Elsevier BV
Z.A. Alrowaili, A.A. El-Hamalawy, Shaik Kareem Ahmmad, S.V.S. Bhadra Lasya, M.S. Al-Buriahi, and Y.S. Rammah
Elsevier BV
Shaik Kareem Ahmmad, Norah A.M. Alsaif, M.S. Shams, Adel M. El-Refaey, R.A. Elsad, Y.S. Rammah, and M.S. Sadeq
Elsevier BV
Shaik Amer Ahmed, Shaik Rajiya, M. A. Samee, Shaik Kareem Ahmmad, and Kaleem Ahmed Jaleeli
Springer Science and Business Media LLC
Shaik Kareem Ahmmad, Nameera Jabeen, Syed Taqi Uddin Ahmed, Syed Ferhatullah Hussainy, and Basheer Ahmed
Elsevier BV
Shaik Kareem Ahmmad, Nameera Jabeen, Syed Taqi Uddin Ahmed, Shaik Amer Ahmed, and Syed Rahman
Elsevier BV
M. A. Samee, Shaik Kareem Ahmmad, Shaik Amer Ahmed, Salavadi Stalin, A. Edukondalu, and Syed Rahman
Pleiades Publishing Ltd
Shaik Kareem Ahmmad, P. Magudapathy, Avula Edukondalu, Shaik Amer Ahmed, and Syed Rahman
Springer Science and Business Media LLC
Salavadi Stalin, Avula Edukondalu, M. A. Samee, Shaik. Kareem Ahmmad, Sair Md. Taqiullah, and Syed Rahman
AIP Publishing
New bismuth tellurite boro-germanate glasses according to composition xBi2O3-(80-x)TeO2-10B2O3-10GeO2 where (x=40, 45, 50, 55, 60 and 65 mol%) have been prepared by melt quench technique at 1150 ◦C. The room temperature optical absorption spectra have been recorded. The indirect band gap energy Eg was determined and found to decrease with Bi2O3 content. The increase in Urbach energy with glass composition indicates the decrease in structural stability. The ionic and covalent bonding parameters were determined. The present glasses are found to be 99 % ionic in nature. The two-photon absorption coefficient was found to increase from 11.89 to 14 cm/GW. The non-linear optical properties such as non-linear refractive index, linear optical susceptibility and third order non-linear optical susceptibility were evaluated using optical data. The authors determined theoretically the optical band gap (Eg) and refractive index (n) of the present glasses using optical electronegativity data. The relationship between Eg and n followed the relation Eg n4 = 99. The present glasses were found suitable for drawing optical fibers.
M. Purnima, Salavadi Stalin, Avula Edukondalu, M.A. Samee, Shaik Kareem Ahmmad, and Syed Rahman
Elsevier BV
Salavadi Stalin, D.K. Gaikwad, M.A. Samee, Avula Edukondalu, Shaik Kareem Ahmmad, A.A. Joshi, and Rahman Syed
Elsevier BV
Shaik Kareem Ahmmad, Mohd. Hamraj, Syed Taqi Uddin Ahmed, and Nameera Jabeen
AIP Publishing
Mohamad Raheem Ahmed, B. Ashok, Shaik Kareem Ahmmad, Abdul Hameed, M. Narasimha Chary, and Md. Shareefuddin
Elsevier BV
S. M. Taqiullah, Shaik Kareem Ahmmad, S. Bandyopadhyay, and Syed Rahman
Author(s)
S. M. Taqiullah, Shaik Kareem Ahmmad, M. A. Samee, and Syed Rahman
Author(s)
First time the mixed alkali effect (MAE) has been investigated in the glass system xNa2O-(30-x)Li2O-40B2O3− 30GeO2 (0≤x≤30 mol%) through density and optical absorption studies. The present glasses were prepared by melt quench technique. The density of the present glasses varies non-linearly exhibiting mixed alkali effect. Using the density data, the elastic moduli namely Young’s modulus, bulk and shear modulus show strong linear dependence as a function of compositional parameter. From the absorption edge studies, the values of optical band gap energies for all transitions have been evaluated. It was established that the type of electronic transition in the present glass system is indirect allowed. The indirect optical band gap exhibit non-linear behavior with compositional parameter showing the mixed alkali effect.
Syed Taqi Uddin Ahmed and Shaik Kareem Ahmmad
Author(s)
Calcium aluminate cements are a special type of cements which have their composition mainly dominated by the presence of Monocalcium Aluminates. In the present paper for the first time we have shown theoretical density and elastic constants for various calcium aluminate cements. The density of the present CAS decrease with aluminates presents in the cement. Using the density data, the elastic moduli namely Young’s modulus, bulk and shear modulus show strong linear dependence as a function of compositional parameter.
Avula Edukondalu, T. Sripathi, Shaik Kareem Ahmmad, Syed Rahman, and K. Sivakumar
Springer Science and Business Media LLC
S. M. Taqiullah, , Shaik Kareem Ahmmad, M. A. Samee, Syed Rahman, , and
Society of Glass Technology