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Nazir Ahmad,Iftikhar Ahmed,Armghan Shahzad,Nauman Khalid,Farrakh Mehboob,Karam Ahad,Ghulam Muhammad Ali 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.3
Phenol is a toxic pollutant found in effluent ofnumerous industries and its elimination is a foremost challenge. The utilization of bacteria plays a crucial role in phenol bioremediation. For isolation of phenol degrading bacteria, sample was collectedfrom industrial waste and enriched in mineral salt medium (MSM)contained 300 mg/L phenol. The strain was identified based on16S rRNA gene analysis as Pseudomonas species and thephylogenetic analysis affiliated the strain with Pseudomonasmonteilii (AF064458) as the most closely related species. Phenoltolerance of the strain in MSM supplemented with variousconcentrations of phenol indicates that the strain NCCP-407 cangrow best at 750 mg L−1 phenol. The strain showed completedegradation of 750 mg L−1 phenol in 56 hours when supplementas a sole source of carbon and energy with the average degradationrate of 28mg L−1 h−1. The doubling time was recorded approximatelyas 12.49 h−1. The present study suggests that this strain is efficientin phenol degradation and can be used in treatment of wastewatercontaining phenol.
Nazir Ahmad Teli,M. Mohamed Sheik Sirajuddeen 한국물리학회 2019 Current Applied Physics Vol.19 No.4
Full Potential Linearised Augmented Plane Wave (FP-LAPW) method was used to investigate the electronic and magnetic properties of NiO doped with Hf and Ta within the frame work of density functional theory (DFT). NiO is found to be stable in rock salt structure. NiO shows conducting characteristics for the lattice constant of 4.155 Å. Doping Hf and Ta in the metallic super cell of NiO separately in the doping concentration of 12.5%, the compounds Hf0.125Ni0.875O and Ta0.125Ni0.875O are formed. These compounds of Hf0.125Ni0.875O and Ta0.125Ni0.875O are predicted to exhibit stability in the ferromagnetic phase. The density of states and band structure plots predict that these compounds exhibit half metallic character with formation of energy gap in one of the spins at the Fermi level. The total spin magnetic moments found in these compounds are 12.00689 μB and 10.97628 μB.
Ahmad, Nazir,Ahmed, Iftikhar,Shahzad, Armghan,Khalid, Nauman,Mehboob, Farrakh,Ahad, Karam,Ali, Ghulam Muhammad The Korean Society for Applied Biological Chemistr 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.3
Phenol is a toxic pollutant found in effluent of numerous industries and its elimination is a foremost challenge. The utilization of bacteria plays a crucial role in phenol bioremediation. For isolation of phenol degrading bacteria, sample was collected from industrial waste and enriched in mineral salt medium (MSM) contained 300 mg/L phenol. The strain was identified based on 16S rRNA gene analysis as Pseudomonas species and the phylogenetic analysis affiliated the strain with Pseudomonas monteilii (AF064458) as the most closely related species. Phenol tolerance of the strain in MSM supplemented with various concentrations of phenol indicates that the strain NCCP-407 can grow best at $750mgL^{-1}$ phenol. The strain showed complete degradation of $750mgL^{-1}$ phenol in 56 hours when supplement as a sole source of carbon and energy with the average degradation rate of $28mgL^{-1}h^{-1}$. The doubling time was recorded approximately as $12.49h^{-1}$. The present study suggests that this strain is efficient in phenol degradation and can be used in treatment of wastewater containing phenol.
Allgrove (Triple A) Syndrome: A Case Report from the Kashmir Valley
Raiz Ahmad Misgar,Nazir Ahmad Pala,Mahroosa Ramzan,Arshad Iqbal Wani,Mir Iftikhar Bashir,Bashir Ahmad Laway 대한내분비학회 2015 Endocrinology and metabolism Vol.30 No.4
Allgrove (Triple A) syndrome is a rare autosomal recessive disorder characterized by cardinal features of adrenal insufficiency due to adrenocorticotropic hormone (ACTH) resistance, achalasia, and alacrimia. It is frequently associated with neurological manifestations like polyneuropathy. Since its first description by Allgrove in 1978, approximately 100 cases have been reported in the literature. Here we report an 18-year-old boy diagnosed as having Allgrove syndrome, with ACTH resistant adrenal insufficiency, achalasia, alacrimia, and severe motor polyneuropathy. Alacrimia was the earliest feature evident at the age of 8 years. He presented with achalasia and adrenal insufficiency at 12 and 18 years respectively and developed neurological symptoms in the form of severe muscle wasting at the age of 15 years. Patients with Allgrove syndrome usually manifest adrenal insufficiency and achalasia during first decade of life. Our patient manifested adrenal insufficiency and achalasia in the second decade and manifested neurological dysfunction before adrenal dysfunction.
GENERALIZATION OF SOME INEQUALITIES TO THE CLASS OF GENERALIZED DERIVATIVE
( Irfan Ahmad Wani ),( Mohammad Ibrahim Mir ),( Ishfaq Nazir ) 한국수학교육학회 2021 純粹 및 應用數學 Vol.28 No.4
In this paper, we obtain some inequalities concerning the class of generalized derivative and generalized polar derivative which are analogous respectively to the ordinary derivative and polar derivative of polynomials.
On the zeros of generalized derivative of a polynomial
Ishfaq Nazir,Mohammad Ibrahim Mir,Irfan Ahmad Wani 강원경기수학회 2023 한국수학논문집 Vol.31 No.1
In this paper, we obtain some results concerning the location of zeros of generalized derivatives of polynomials which are analogous to those for the ordinary derivative of polynomials.
LP−TYPE INEQUALITIES FOR DERIVATIVE OF A POLYNOMIAL
Irfan Ahmad Wani,Mohammad Ibrahim Mir,Ishfaq Nazir 강원경기수학회 2021 한국수학논문집 Vol.29 No.4
For the polynomial $P(z)$ of degree $n$ and having all its zeros in $|z| \leq k$, $k \geq 1$, Jain \cite{j} proved that \begin{align*} \max_{|z|=1} |P^{\prime}(z)|\geq n \frac{|c_0| + |c_n|k^{n+1}}{|c_0|(1+k^{n+1}) + |c_n| ( k^{n+1} + k^{2n})} \max_{|z|=1}|P(z)| . \end{align*} In this paper, we extend above inequality to its integral analogous and there by obtain more results which extended the already proved results to integral analogous.
On Sendov's conjecture about critical points of a polynomial
Ishfaq Nazir,Mohammad Ibrahim Mir,Irfan Ahmad Wani 강원경기수학회 2021 한국수학논문집 Vol.29 No.4
The derivative of a polynomial $p(z)$ of degree $n$, with respect to point $\alpha$ is defined by $D_{\alpha}p(z)=np(z)+(\alpha-z)p'(z)$. Let $p(z)$ be a polynomial having all its zeros in the unit disk $|z| \leq 1$. The Sendov conjecture asserts that if all the zeros of a polynomial $p(z)$ lie in the closed unit disk, then there must be a zero of $p'(z)$ within unit distance of each zero. In this paper, we obtain certain results concerning the location of the zeros of $D_{\alpha}p(z)$ with respect to a specific zero of $p(z)$ and a stronger result than Sendov conjecture is obtained. Further, a result is obtained for zeros of higher derivatives of polynomials having multiple roots.
Muhammad Altaf Nazir,Tayyaba Najam,Muhammad Sohail Bashir,Muhammad Sufyan Javed,Muhammad Aswad Bashir,Muhammad Imran,Umair Azhar,Syed Shoaib Ahmad Shah,Aziz ur Rehman 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.1
The use of highly efficient, environment-friendly and economically inexpensive materials for the adsorption removal of contaminants from water has always been considered as emerging task. In this study, we synthesized hybrid tri-metallic nickel cobalt layered double hydroxide (NiCoAl-LDH) porous material for the adsorption removal of Eosin yellow (EY) and Malachite green (MG) from water. The characterization results disclosed that tri-metallic LDH has been synthesized with extraordinary purity, identical morphology and high surface area (134.21 m2·g−1). The NiCoAl-LDH performs the best for adsorption of EY (qe=37.30mg·g−1 at pH=2) and MG (qe=39.61 mg·g−1 at pH=10). The Langmuir and Freundlich isotherm models were applied to explain the adsorption process of dyes on the surface of LDH. The Langmuir model (R2=0.991 and 0.999 for Eosin Y and Malachite G, respectively) was very appropriate to explain the process of adsorption on NiCoAl-LDH as homogeneous (monolayer). The maximum adsorption capacity of EY and MG calculated with Langmuir model was 78.74 and 110.13 mg·g−1 at 30 °C, respectively. Also with 240 minutes contact time 94.8% EY and 89.9% MG was adsorbed by as synthesized NiCoAl-LDH nanosheets. The NiCoAl-LDH nanosheets showed excellent performance of reusability of up to five regeneration cycles. The results showed that the adsorption capacity of NiCoAl-LDH nanosheets after five regeneration cycles, to adsorb EY, decreased only from 40.80 to 36.93 mg·g−1 and that of MG from 79.21 to 75.42 mg·g−1, which is acceptable. The overall results Suggest that the fabricated NiCoAl-LDH is favorable for the purification of dye contaminated water.
Controlled Ondansetron Release Based on Hydroxyethyl Starch Hydroxyethyl Methacrylate
Tahir, Muhammad Nazir,Adnan, Ahmad,Cho, Eunae,Jung, Seunho Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
Presented study describes the synthesis of photo cross-linkable and water soluble hydroxyethyl starch hydroxyethyl methacrylate (HESHEMA) samples with different degree of substitution (DS) by functionalization of hydroxyethyl starch (HES) with hydroxyethyl methacrylate (HEMA) or hydroxyethyl methacrylate carbonylimidazole (HEMACI) in DMSO using two different routes. It was revealed that the reaction time for HESHEMA synthesis can be reduced from 5 days to 24 h by conducting the reaction at $80^{\circ}C$ instead of at room temperature. Solubility of HESHEMA was found to be dependent on DS which in turn was dependent on ratio between HES and HEMA or HEMACI. HESHEMA samples with DS > 0.24 depicted insoluble in water, whereas the samples with DS < 0.05 did not form appreciable gel. HESHEMA samples with appropriate DS were converted into hydrogels by cross-linking polymer chains under UV radiations and resulting HESHEMA hydrogels showed swelling up to 1200%. Application of HESHEMA in controlled drug delivery was investigated by diffusion based encapsulation of Ondansetron, a serotonin 5-$HT_3$ receptor antagonist drug, mainly used for nausea and vomiting treatment.