The concern of climate change and global warming has consecutively risen to progress research fie... more The concern of climate change and global warming has consecutively risen to progress research fields pledging to find the possible solutions. The use of fossil fuels for energy leads to an increase in CO 2 emission causing environmental problems like global warming and climate change. For industrial applications, aqueous solutions of amines are extensively used as chemical absorbent or solvent. However, amine reaction with CO 2 results in stable carbamate formation, which in turn leads to high energy usage for regeneration and promote additional corrosion problems. To overcome these restrictions, this study proposes a methodology to analyze the performance of new solvent namely amino acid salt solution. Evaluation of solvent performance in terms of CO 2 loading and designing of acid gas removal system, requires pressure solubility data and design properties like density, pH value and refractive index.
IOP Conference Series: Materials Science and Engineering, 2017
The alkaline catalyst derived from the duck-bones was used for conversion of glycerol to polyglyc... more The alkaline catalyst derived from the duck-bones was used for conversion of glycerol to polyglycerol via solvent free etherification process. The physicochemical properties of prepared materials were duck-bones were systematically investigated as a catalyst by latest techniques of Thermo gravimetric analysis (TGA), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) surface properties. TGA showed different trends of duck-bones decomposition from room temperature to 1000C. XRD pattern showed a clear and sharp peaks of a crystalline phase of CaO. The activity of the catalysts was in line with the basic amount of the strong base sites, surface area, and crystalline phase in the catalysts. The prepared catalyst derived from duck-bones provided high activity (99 %) for glycerol conversion and around 68 % yield for polyglycerol production. These ample wastes of duck-bones have good potential to be used as polyglycerol production catalysts due to have high quantity of Ca compare to other types of bones like cow, chicken and fish bones.
ABSTRACT IOS Press 129 Novel preparation and spectral investigation of monometallic transition me... more ABSTRACT IOS Press 129 Novel preparation and spectral investigation of monometallic transition metal Schiff base complexes (Zn, Cu, Mn, Co) as bacteria and fungus inhibitors Abstract. In this research, a series of monometallic complexes has been employed individually against a series of bacterial and fungal strains just to check the enhanciablity of biological activities of the synthesized monometallic complexes when compared with the parental synthesized ligand derived by the condensation reaction of phenyl hydrazine with salicylalde-hyde (2-hydroxylphenylidene-N-phenylamino-imine). The bacterial strains used were Escheria coli, Staphylococcus aureus and Bacillus Subbtilis and Escheria coli. Similarly, fungal strains used were Aspergillus niger, Alternaria alternate and Aspergillus flavus for the purpose to check the capability of the compound 1, 2, 3, 4, and 5 as antibactrial and antifungicides. The results showed that the monometallic complexes are more effective against bacterial and fungal strains than the ligand. The lignad was further reacted indvidually with series of transition metals including Zn (II), Co (II), Mn (II) and Cu (II) (Bis(2-[-(2-phenylhydrazinylidene)methyl]phenolato)M(II)) where M = Zn, Co, Mn, Cu. The ligand was analysed by different spectroscopic tools as FT-IR, MS and NMR while the complexes were characterized by FT-IR and XRD.
Retrospective study. To identify demographic features, clinical characteristics, and complication... more Retrospective study. To identify demographic features, clinical characteristics, and complications associated with spinal cord injuries/disorders (SCI/D) among elderly individuals at a rehabilitation hospital and to measure the functional outcomes of rehabilitation. Rehabilitation hospital in King Fahad Medical City (KFMC), Riyadh, Saudi Arabia. The study was conducted in elderly individuals (aged ≥65 years) with SCI/D, admitted to an inpatient rehabilitation program between October 2014 and 2015. Demographic and clinical data were recorded along with functional independence measure (FIM) score at admission (FIMa) and discharge (FIMd). Data were descriptively analyzed. Association of non-metric and metric variables with complications was measured using , and Student's -test, respectively. Twenty-four individuals with SCI/D (95.8% were male and retired) with mean (standard deviation, SD) age of 72.3 (6.3) years were included. The most common co-morbidities were hypertension (75.0...
Energy, in the form of biofuel production through transesterification of vegetable oils and anima... more Energy, in the form of biofuel production through transesterification of vegetable oils and animal fats is rapidly increasing due to the hasty outgrowth of population and urbanization. Correspondent increase in the production of crude glycerol causes mixed effects. Sustainable biodiesel production requires optimization of its production process and drastic increase in the utilization of glycerol. To ensure high biodiesel yields and low environmental impacts, with respect to needless waste streams. Upgrading of crude glycerol to highly pure glycerol and subsequent utilization in producing value added products are emerging research areas. The production of such value-added chemicals requires new basic heterogeneous catalysts as well as optimization of the conventional catalyst materials. The clay especially mesoporous type clay have great potential as a catalyst. For present study Aluminum pillared clay (AlPC) was prepared by Al13 precursors and treated with NaOH to modify as basic which enhance conversion of glycerol to polyglycerol (diglycerol, triglycerol). The modified AlPC samples were well characterized by different latest techniques. The modified ALPC was found stable with high mesoporousity and basicity that enhances etherification reaction. The glycerol conversion and polyglycerol production yield was noted maximum 98% and 80.5% over prepared stable modified AlPC catalysts respectively. Industrially, the findings attained in this study might contribute towards promoting the biodiesel industry through utilization of its by-products.
Abstract Objective: The current study was designed to evaluate effective clinical pharmacy clerks... more Abstract Objective: The current study was designed to evaluate effective clinical pharmacy clerkship as an emerging programme in pediatric ward of tertiary care hospital setting to identify actual and potential drug related problems (DRPs) and provide suitable suggestions with references sources. Methods: Already designed proforma was used to enter the collected data regarding selected typical patients cases of pediatric infectious diseases including meningitis, pneumonia, acute gastroenteritis and malaria in the form as; patient’s information, chief complaints, medication history, history of present illness, past medical history, past surgical history, family history, personal history, allergies, review of systems, physical examination, clinical laboratory tests, daily progress report, treatment at hospital and discharge medications. Results: A total of twenty typical cases, five cases per disease were observed, documented and analyzed completely. Patients included in the study wer...
The present study investigates the effects of intercalation process of protonated primary, second... more The present study investigates the effects of intercalation process of protonated primary, secondary and tertiary amines on structural and surface characteristics of sodium form of bentonite clay. For this purpose, sodium form of bentonite clay was prepared and then exchanged with mono-, di-and triethanolammonium cations via intercalation mechanism into the interlayer space of the clay. The prepared samples were characterized by XRD and BET techniques. An increase in the d-spacing of bentonite clay with the molar mass of amines was observed in their x-ray diffractograms, following the order of: triethanolamine…
ABSTRACT The role of putrescine (PUT) in regulating fruit softening, antioxidative enzymes and bi... more ABSTRACT The role of putrescine (PUT) in regulating fruit softening, antioxidative enzymes and biochemical changes in fruit quality was investigated during ripening and cold storage of mango (Mangifera indica cv. Samar Bahisht Chaunsa). Fruit were treated with various PUT concentrations (0.0, 0.1, 1.0 and 2.0 mM) and were allowed to ripen at 32 ± 2 °C for 7 days, or stored at 11 ± 1 °C for up to 28 days. Respiration rate and ethylene production were measured daily during ripening and cold storage. Cell wall degrading enzymes such as exo-polygalacturonase (exo-PG), endo-polygalacturonase (endo-PG), pectin esterase (PE), endo-1,4-β-d-glucanase (EGase), antioxidative enzymes including superoxide dismutase (SOD), peroxidase (POX), and catalase (CAT), fruit firmness as well as biochemical fruit quality characteristics were estimated during ripening and cold storage at 2 and 7 day intervals, respectively. PUT treatments reduced respiration rate, ethylene production and maintained higher fruit firmness during ripening as well as cold storage. PUT-treated fruit exhibited significantly suppressed activities of cell wall enzymes (exo-, endo-PG and EGase), but retained higher PE activity during ripening and cold storage. Total phenolic and antioxidant contents were significantly higher in PUT-treated fruit during ripening as well in the cold storage period than in the controls. Activities of antioxidative enzymes (CAT, POX and SOD) were also significantly higher in PUT-treated fruit during ripening as well as cold storage. SSC and SSC:TA were lower in PUT-treated fruit, while TA and ascorbic acid content showed the reverse trend. In conclusion, pre-storage 2.0 mM PUT treatment inhibited ethylene production and suppressed the activities of cell wall enzymes, while resulting in higher activities of antioxidative enzymes and maintaining better fruit quality during ripening and cold storage.
The supported TiO2 photocatalyst has been reported for the photodegradation of different organic ... more The supported TiO2 photocatalyst has been reported for the photodegradation of different organic pollutants. These supported TiO2 photocatalysts include metal and non metal doped TiO2 photocatalysts. The photodegradation can be explained in terms of adsorption. The adsorption of the dye is an significant and obvious parameter in the photodegradation process. The photodegradation is directly related to the adsorbed quantities of the pollutant onto the surface of adsorbant. Adsorption of Orange II, an azo dye has been reported using different adsorbents like fly ash, activated carbon and porous titanium dioxide. This review presents a comparison of maximum adsorption capacities (Qm; mg.g–1) and Langmuir adsorption constant (Kads; L.mg–1) for the adsorbents reported in previous studies.
The effects of zirconium silicate as a fire retardant reinforcement in the mixture of expandable ... more The effects of zirconium silicate as a fire retardant reinforcement in the mixture of expandable graphite (EG), ammonium poly phosphate (APP), melamine, boric acid, bisphenol A epoxy resin BE-188(BPA) and ACR Hardener H-2310 polyamide amine are presented. Different formulations were developed to study the effects of zirconium silicate on char expansion, heat shielding, char morphology and composition after fire test. The coatings were tested at 950 C using Bunsen burner for 1 h. The results show state that the zirconium silicate enhanced fire protection performance of intumescent coating. The morphology of the char was studied by Field emission scanning electron microscope (FESEM) after furnace fire test. Xray Diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) results showed the presence of graphite, borophosphate; boron oxide and boric acid in the char. Thermogravimetric analysis (TGA) showed that zirconium silicate enhanced residual weight of char. X-ray photoelectron spectroscopy (XPS) analysis showed that 5% zirconium silicate enhanced the carbon content up to 60.87% and lowered oxygen content to 28.09% in the residual char which proved helpful in improving the fire resistance performance of coating. Pyrolysis analysis confirmed that IF5-ZS releases less gaseous products concentration compared to IF-control coating.
The excess conductivity was determined from the resistivity measurements of the as-prepared and o... more The excess conductivity was determined from the resistivity measurements of the as-prepared and oxygen annealed (Cu 0.5Àx Pb x Tl 0.5 )Ba 2 Ca 2 Cu 3 O 10Àd (x = 0, 0.15, 0.25, 0.35) samples in the temperature region well above the superconducting transition temperature. The excess conductivity data was analyzed in the light of Aslamazov-Larkin (AL) theory and its modified form given by Lawrence-Doniach (LD) model. These analyses have shown that the excess conductivity data of (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples fits very well to the two-dimensional (2D) and three-dimensional (3D) AL equations. Moreover, at higher temperature a crossover from 2D to 0D was also observed. The width of 3D region has been increased; but, the increase was not monotonous. However, the width of 0D region has been increased up to x = 0.25. The zero temperature coherence length [n c (0)] has shown a decreasing trend with the increase of T c (0) and Pb concentration in the charge reservoir layer (Cu 0.5Àx Pb x Tl 0.5 )Ba 2 O 4Àd . The phase relaxation time [s / ] and coupling parameter k obtained from FIC analysis shows that the fluctuation pairs are formed both due to electron-phonon and electron-electron correlations in (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples. The (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples were also annealed in oxygen to change the carrier concentration in the CuO 2 planes. A possibility of suppression of the spin and charge density gaps with Pb-doping is also discussed.
A total of 50 blood samples were collected from auto rickshaw drivers who were exposed to environ... more A total of 50 blood samples were collected from auto rickshaw drivers who were exposed to environmental gasoline in different sites of Dir (L), Khyber Pukhtunkhwa, Pakistan, in July and August, 2009. Control group was selected among the individuals who were not regularly exposed to gasoline emissions. The samples were analyzed for calcium, cholesterol, glucose, phosphorus, potassium, and triglycerides levels.
Journal of Superconductivity and Novel Magnetism, 2010
The effect of Pb doping on the superconducting properties of (Cu 0.5−x Pb x Tl 0.5 )Ba 2 Ca 2 Cu ... more The effect of Pb doping on the superconducting properties of (Cu 0.5−x Pb x Tl 0.5 )Ba 2 Ca 2 Cu 3 O 10−δ (x=0.0, 0.15, 0.25, 0.35) samples has been investigated. Lead is doped in Cu 0.5 Tl 0.5 Ba 2 O 4−δ charge reservoir layer and at the CuO 2 planar sites. A multiphase ...
The concern of climate change and global warming has consecutively risen to progress research fie... more The concern of climate change and global warming has consecutively risen to progress research fields pledging to find the possible solutions. The use of fossil fuels for energy leads to an increase in CO 2 emission causing environmental problems like global warming and climate change. For industrial applications, aqueous solutions of amines are extensively used as chemical absorbent or solvent. However, amine reaction with CO 2 results in stable carbamate formation, which in turn leads to high energy usage for regeneration and promote additional corrosion problems. To overcome these restrictions, this study proposes a methodology to analyze the performance of new solvent namely amino acid salt solution. Evaluation of solvent performance in terms of CO 2 loading and designing of acid gas removal system, requires pressure solubility data and design properties like density, pH value and refractive index.
IOP Conference Series: Materials Science and Engineering, 2017
The alkaline catalyst derived from the duck-bones was used for conversion of glycerol to polyglyc... more The alkaline catalyst derived from the duck-bones was used for conversion of glycerol to polyglycerol via solvent free etherification process. The physicochemical properties of prepared materials were duck-bones were systematically investigated as a catalyst by latest techniques of Thermo gravimetric analysis (TGA), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) surface properties. TGA showed different trends of duck-bones decomposition from room temperature to 1000C. XRD pattern showed a clear and sharp peaks of a crystalline phase of CaO. The activity of the catalysts was in line with the basic amount of the strong base sites, surface area, and crystalline phase in the catalysts. The prepared catalyst derived from duck-bones provided high activity (99 %) for glycerol conversion and around 68 % yield for polyglycerol production. These ample wastes of duck-bones have good potential to be used as polyglycerol production catalysts due to have high quantity of Ca compare to other types of bones like cow, chicken and fish bones.
ABSTRACT IOS Press 129 Novel preparation and spectral investigation of monometallic transition me... more ABSTRACT IOS Press 129 Novel preparation and spectral investigation of monometallic transition metal Schiff base complexes (Zn, Cu, Mn, Co) as bacteria and fungus inhibitors Abstract. In this research, a series of monometallic complexes has been employed individually against a series of bacterial and fungal strains just to check the enhanciablity of biological activities of the synthesized monometallic complexes when compared with the parental synthesized ligand derived by the condensation reaction of phenyl hydrazine with salicylalde-hyde (2-hydroxylphenylidene-N-phenylamino-imine). The bacterial strains used were Escheria coli, Staphylococcus aureus and Bacillus Subbtilis and Escheria coli. Similarly, fungal strains used were Aspergillus niger, Alternaria alternate and Aspergillus flavus for the purpose to check the capability of the compound 1, 2, 3, 4, and 5 as antibactrial and antifungicides. The results showed that the monometallic complexes are more effective against bacterial and fungal strains than the ligand. The lignad was further reacted indvidually with series of transition metals including Zn (II), Co (II), Mn (II) and Cu (II) (Bis(2-[-(2-phenylhydrazinylidene)methyl]phenolato)M(II)) where M = Zn, Co, Mn, Cu. The ligand was analysed by different spectroscopic tools as FT-IR, MS and NMR while the complexes were characterized by FT-IR and XRD.
Retrospective study. To identify demographic features, clinical characteristics, and complication... more Retrospective study. To identify demographic features, clinical characteristics, and complications associated with spinal cord injuries/disorders (SCI/D) among elderly individuals at a rehabilitation hospital and to measure the functional outcomes of rehabilitation. Rehabilitation hospital in King Fahad Medical City (KFMC), Riyadh, Saudi Arabia. The study was conducted in elderly individuals (aged ≥65 years) with SCI/D, admitted to an inpatient rehabilitation program between October 2014 and 2015. Demographic and clinical data were recorded along with functional independence measure (FIM) score at admission (FIMa) and discharge (FIMd). Data were descriptively analyzed. Association of non-metric and metric variables with complications was measured using , and Student's -test, respectively. Twenty-four individuals with SCI/D (95.8% were male and retired) with mean (standard deviation, SD) age of 72.3 (6.3) years were included. The most common co-morbidities were hypertension (75.0...
Energy, in the form of biofuel production through transesterification of vegetable oils and anima... more Energy, in the form of biofuel production through transesterification of vegetable oils and animal fats is rapidly increasing due to the hasty outgrowth of population and urbanization. Correspondent increase in the production of crude glycerol causes mixed effects. Sustainable biodiesel production requires optimization of its production process and drastic increase in the utilization of glycerol. To ensure high biodiesel yields and low environmental impacts, with respect to needless waste streams. Upgrading of crude glycerol to highly pure glycerol and subsequent utilization in producing value added products are emerging research areas. The production of such value-added chemicals requires new basic heterogeneous catalysts as well as optimization of the conventional catalyst materials. The clay especially mesoporous type clay have great potential as a catalyst. For present study Aluminum pillared clay (AlPC) was prepared by Al13 precursors and treated with NaOH to modify as basic which enhance conversion of glycerol to polyglycerol (diglycerol, triglycerol). The modified AlPC samples were well characterized by different latest techniques. The modified ALPC was found stable with high mesoporousity and basicity that enhances etherification reaction. The glycerol conversion and polyglycerol production yield was noted maximum 98% and 80.5% over prepared stable modified AlPC catalysts respectively. Industrially, the findings attained in this study might contribute towards promoting the biodiesel industry through utilization of its by-products.
Abstract Objective: The current study was designed to evaluate effective clinical pharmacy clerks... more Abstract Objective: The current study was designed to evaluate effective clinical pharmacy clerkship as an emerging programme in pediatric ward of tertiary care hospital setting to identify actual and potential drug related problems (DRPs) and provide suitable suggestions with references sources. Methods: Already designed proforma was used to enter the collected data regarding selected typical patients cases of pediatric infectious diseases including meningitis, pneumonia, acute gastroenteritis and malaria in the form as; patient’s information, chief complaints, medication history, history of present illness, past medical history, past surgical history, family history, personal history, allergies, review of systems, physical examination, clinical laboratory tests, daily progress report, treatment at hospital and discharge medications. Results: A total of twenty typical cases, five cases per disease were observed, documented and analyzed completely. Patients included in the study wer...
The present study investigates the effects of intercalation process of protonated primary, second... more The present study investigates the effects of intercalation process of protonated primary, secondary and tertiary amines on structural and surface characteristics of sodium form of bentonite clay. For this purpose, sodium form of bentonite clay was prepared and then exchanged with mono-, di-and triethanolammonium cations via intercalation mechanism into the interlayer space of the clay. The prepared samples were characterized by XRD and BET techniques. An increase in the d-spacing of bentonite clay with the molar mass of amines was observed in their x-ray diffractograms, following the order of: triethanolamine…
ABSTRACT The role of putrescine (PUT) in regulating fruit softening, antioxidative enzymes and bi... more ABSTRACT The role of putrescine (PUT) in regulating fruit softening, antioxidative enzymes and biochemical changes in fruit quality was investigated during ripening and cold storage of mango (Mangifera indica cv. Samar Bahisht Chaunsa). Fruit were treated with various PUT concentrations (0.0, 0.1, 1.0 and 2.0 mM) and were allowed to ripen at 32 ± 2 °C for 7 days, or stored at 11 ± 1 °C for up to 28 days. Respiration rate and ethylene production were measured daily during ripening and cold storage. Cell wall degrading enzymes such as exo-polygalacturonase (exo-PG), endo-polygalacturonase (endo-PG), pectin esterase (PE), endo-1,4-β-d-glucanase (EGase), antioxidative enzymes including superoxide dismutase (SOD), peroxidase (POX), and catalase (CAT), fruit firmness as well as biochemical fruit quality characteristics were estimated during ripening and cold storage at 2 and 7 day intervals, respectively. PUT treatments reduced respiration rate, ethylene production and maintained higher fruit firmness during ripening as well as cold storage. PUT-treated fruit exhibited significantly suppressed activities of cell wall enzymes (exo-, endo-PG and EGase), but retained higher PE activity during ripening and cold storage. Total phenolic and antioxidant contents were significantly higher in PUT-treated fruit during ripening as well in the cold storage period than in the controls. Activities of antioxidative enzymes (CAT, POX and SOD) were also significantly higher in PUT-treated fruit during ripening as well as cold storage. SSC and SSC:TA were lower in PUT-treated fruit, while TA and ascorbic acid content showed the reverse trend. In conclusion, pre-storage 2.0 mM PUT treatment inhibited ethylene production and suppressed the activities of cell wall enzymes, while resulting in higher activities of antioxidative enzymes and maintaining better fruit quality during ripening and cold storage.
The supported TiO2 photocatalyst has been reported for the photodegradation of different organic ... more The supported TiO2 photocatalyst has been reported for the photodegradation of different organic pollutants. These supported TiO2 photocatalysts include metal and non metal doped TiO2 photocatalysts. The photodegradation can be explained in terms of adsorption. The adsorption of the dye is an significant and obvious parameter in the photodegradation process. The photodegradation is directly related to the adsorbed quantities of the pollutant onto the surface of adsorbant. Adsorption of Orange II, an azo dye has been reported using different adsorbents like fly ash, activated carbon and porous titanium dioxide. This review presents a comparison of maximum adsorption capacities (Qm; mg.g–1) and Langmuir adsorption constant (Kads; L.mg–1) for the adsorbents reported in previous studies.
The effects of zirconium silicate as a fire retardant reinforcement in the mixture of expandable ... more The effects of zirconium silicate as a fire retardant reinforcement in the mixture of expandable graphite (EG), ammonium poly phosphate (APP), melamine, boric acid, bisphenol A epoxy resin BE-188(BPA) and ACR Hardener H-2310 polyamide amine are presented. Different formulations were developed to study the effects of zirconium silicate on char expansion, heat shielding, char morphology and composition after fire test. The coatings were tested at 950 C using Bunsen burner for 1 h. The results show state that the zirconium silicate enhanced fire protection performance of intumescent coating. The morphology of the char was studied by Field emission scanning electron microscope (FESEM) after furnace fire test. Xray Diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) results showed the presence of graphite, borophosphate; boron oxide and boric acid in the char. Thermogravimetric analysis (TGA) showed that zirconium silicate enhanced residual weight of char. X-ray photoelectron spectroscopy (XPS) analysis showed that 5% zirconium silicate enhanced the carbon content up to 60.87% and lowered oxygen content to 28.09% in the residual char which proved helpful in improving the fire resistance performance of coating. Pyrolysis analysis confirmed that IF5-ZS releases less gaseous products concentration compared to IF-control coating.
The excess conductivity was determined from the resistivity measurements of the as-prepared and o... more The excess conductivity was determined from the resistivity measurements of the as-prepared and oxygen annealed (Cu 0.5Àx Pb x Tl 0.5 )Ba 2 Ca 2 Cu 3 O 10Àd (x = 0, 0.15, 0.25, 0.35) samples in the temperature region well above the superconducting transition temperature. The excess conductivity data was analyzed in the light of Aslamazov-Larkin (AL) theory and its modified form given by Lawrence-Doniach (LD) model. These analyses have shown that the excess conductivity data of (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples fits very well to the two-dimensional (2D) and three-dimensional (3D) AL equations. Moreover, at higher temperature a crossover from 2D to 0D was also observed. The width of 3D region has been increased; but, the increase was not monotonous. However, the width of 0D region has been increased up to x = 0.25. The zero temperature coherence length [n c (0)] has shown a decreasing trend with the increase of T c (0) and Pb concentration in the charge reservoir layer (Cu 0.5Àx Pb x Tl 0.5 )Ba 2 O 4Àd . The phase relaxation time [s / ] and coupling parameter k obtained from FIC analysis shows that the fluctuation pairs are formed both due to electron-phonon and electron-electron correlations in (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples. The (Cu 0.5Àx Pb x Tl 0.5 )-1223 samples were also annealed in oxygen to change the carrier concentration in the CuO 2 planes. A possibility of suppression of the spin and charge density gaps with Pb-doping is also discussed.
A total of 50 blood samples were collected from auto rickshaw drivers who were exposed to environ... more A total of 50 blood samples were collected from auto rickshaw drivers who were exposed to environmental gasoline in different sites of Dir (L), Khyber Pukhtunkhwa, Pakistan, in July and August, 2009. Control group was selected among the individuals who were not regularly exposed to gasoline emissions. The samples were analyzed for calcium, cholesterol, glucose, phosphorus, potassium, and triglycerides levels.
Journal of Superconductivity and Novel Magnetism, 2010
The effect of Pb doping on the superconducting properties of (Cu 0.5−x Pb x Tl 0.5 )Ba 2 Ca 2 Cu ... more The effect of Pb doping on the superconducting properties of (Cu 0.5−x Pb x Tl 0.5 )Ba 2 Ca 2 Cu 3 O 10−δ (x=0.0, 0.15, 0.25, 0.35) samples has been investigated. Lead is doped in Cu 0.5 Tl 0.5 Ba 2 O 4−δ charge reservoir layer and at the CuO 2 planar sites. A multiphase ...
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