Objectives: To determine the seropositivity of typhoid fever in febrile pediatric patients presen... more Objectives: To determine the seropositivity of typhoid fever in febrile pediatric patients presenting to tertiary care center. Methods: This observational study was conducted at Children Hospital Quetta (CHQ) from July 2011 to March 2012. The children with three or more days fever, no obvious focus of infection and clinically suspected of typhoid fever were screened. Sterile Blood samples were obtained from febrile patients and Widal and Typhidot® tests were performed for the diagnosis of Typhoid fever in the suspected populations. Results: Total of 2964 clinically suspected patients were screened for typhoid fever. Of these, 550 (18.6%) patients were positive serologically. The higher prevalence of the disease in hot summer season and increasing pattern of the disease was observed in summer days. The disease was higher in school age children under 5-10 years. Although non-significant association was observed on sex basis. Conclusion: The findings highlight the considerable burden of typhoid fever in preschool and schoolaged children. The variation in the disease pattern has also been observed under seasonal variation and different age groups, all of which need to be considered in deliberations to control the typhoid fever.
This study highlights the level of customer awareness about Islamic banks and determines the rela... more This study highlights the level of customer awareness about Islamic banks and determines the relationship between service quality and customer satisfaction with respect to Islamic banks. The survey based approach is used to collect the necessary data. 167 questionnaires were processed for the study. SPSS was used to analyze the data and the model was tested through AMOS. The study finds that there is a positive and significant relationship between customer satisfaction and constructs of service quality like compliance, assurance, empathy and representativeness. This study further concludes that compliance and representativeness influence more on customer satisfaction in Pakistani Islamic banks.
An evaluation for the development of a paper-based test of English as a Foreign Language (TOEFL) ... more An evaluation for the development of a paper-based test of English as a Foreign Language (TOEFL) for English Education Department students at one of the colleges in Langsa, Aceh, Indonesia, is necessary, considering their unsatisfactory scores even though the preparation program has been conducted. This research employed context, input, process, and product (CIPP) model developed by Stufflebeam upon the program. Methodologically, interviews, questionnaires, and observation were executed to five TOEFL lecturers and 34 students, while the data obtained were analyzed with the qualitative analysis method of Miles and Huberman. Based on the evaluation of context, the program had an appropriate background, goals, and objectives. Regarding the input, it still had problems related to the availability of resources and facilities. There were no standardized learning materials available, including the broken language laboratory. It affected the process since the lecturers could not maximize th...
Mobile devices have become the primary mode of Internet access. Yet, differences in mobile hardwa... more Mobile devices have become the primary mode of Internet access. Yet, differences in mobile hardware resources, such as device memory, coupled with the rising complexity of Web pages can lead to widely different quality of experience for users. In this work, we analyze how device memory usage affects Web browsing performance. We quantify the memory footprint of popular Web pages over different mobile devices, mobile browsers, and Android versions, analyze the induced memory distribution across different browser components (e.g., JavaScript engine and compositor), investigate how performance gets impacted under memory pressure and propose optimizations to reduce the memory footprint of Web browsing. We show that these optimizations can improve performance and reduce chances of browser crashes in low memory scenarios.
Titled the implementation of culture religious to students moral development in MTs Tanwirul Qulu... more Titled the implementation of culture religious to students moral development in MTs Tanwirul Qulub Sungelebak Karanggeneng Lamongan years lessons 2017 / 2018 aims to answer the question of how the application of religious culture in school impact the moral development in MTs. students Tanwirul Qulub Sungelebak. The implementation of tolerance attitude to the religious culture in schools it is incredibly important to be implemented. With in achieveing the goal of tolerance attitude to the religious culture will tertanamkan in the soul of a student to lose their indirect kind of way, as well as be an increase in the peace from us and the ketaqwaan students as well as strongly influenced the development of the act of moralizing school tuition. It is very relevant if we dock in the high number of a case that appear in the holy land, as as well as among students, they are promiscuous, immoral actions and ill treatment of an equality accompanied by murder case of not a few of the students cause reluctance of the doers. To express this researchers used qualitative research approach. In data collection, researchers used the interview, observation and documentation. And in data analysis, the use writers interaction which includes reduction interactive data, presentation of data and verification. The results of research obtained was first, form the implementation of culture religious in MTs. tanwirul qulub in the form of religious subjects additional namely Nahwu Shorof, Faraid, Ta'lim, Aswaja.And also be habituation of religious activities that is read the al-waqi'ah, read asmaul belong, prayer dhuha, read Tahlil together every day thursday. Second, the implementation of culture religious gives the effect on moral development school tuition. This is proven with a civility the school tuition and empathy high on teachers and others friend.
In present investigation, gelatin-based (AA-co-AMPS) hydrogels were prepared using N, N&a... more In present investigation, gelatin-based (AA-co-AMPS) hydrogels were prepared using N, N'-Methylenebisacrylamide (MBA) as a cross-linker and ammonium per sulfate (APS) as an initiator. The successful crosslinking and network formation was confirmed by Fourier transform infrared spectroscopy (FT IR). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) investigations proved the higher thermal stability and successful entrapment of oxaliplatin (OXP) in the polymeric network. X-ray diffraction (XRD) confirmed the loss in crystallinity of the drug after loading in the hydrogel. Scanning electron microscopy (SEM) revealed the porous surface of the hydrogel. The newly formed hydrogels were responsive to change in pH. The swelling, drug loading and drug release was increased with increase in concentration of acrylic acid (AA) while gelatin and 2-acrylamido 2-methylpronesulfonic acid (AMPS) were found to act inversely. The in-vitro enzymatic degradation study showed that the blank hydrogels were more stable against the blank PBS than the collagenase and lysozyme. MTT-assay proved that the blank hydrogels were cyto-compatible while free OXP as well as OXP-loaded hydrogels showed dose dependent controlled cytotoxicity against Vero, MCF-7 and HCT-116 cell lines. The preliminary safety evaluation and oral tolerability showed that the hydrogel suspension was biocompatible and well tolerable upto 4000 mg/kg of body weight without causing any hematological or histopathological changes in rabbits.
All book chapters are Open Access distributed under the Creative Commons Attribution 3.0 license,... more All book chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. However, users who aim to disseminate and distribute copies of this book as a whole must not seek monetary compensation for such service (excluded OMICS Group representatives and agreed collaborations). After this work has been published by OMICS Group, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. Notice: Statements and opinions expressed in the book are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book.
Medicinal chemistry (Shariqah (United Arab Emirates)), Jan 30, 2015
Every year, cancer takes the life of millions of people. Conventional treatments have produced un... more Every year, cancer takes the life of millions of people. Conventional treatments have produced unsatisfactory results for some types of cancer, and the side effects are extensive, leading to a shift in the focus of treatment towards alternative medicines. Indeed, medicinal plants have long been investigated by scientists for their anti-cancer properties. Some phytochemicals that are important active constituents of plants, including catechins, ursolic acid, silymarin, glycyrrhizin, ellagic acid, gallic acid and various types of flavonoids, have shown promise in future cancer management. The current review covers various aspects of cancer treatment based on medicinal plants at molecular level and sheds light on their structures and modes of action.
The aim of this study was to determine the erythrocyte antioxidant enzyme activity and the supero... more The aim of this study was to determine the erythrocyte antioxidant enzyme activity and the superoxide dismutase, catalase, glutathione peroxidase, and plasma malondialdehyde levels in aging mice and to evaluate how these measures are modulated by potential antioxidants, including the tocotrienol-rich fraction, Piper betle, and Chlorella vulgaris. METHOD: One hundred and twenty male C57BL/6 inbred mice were divided into three age groups: young (6 months old), middle-aged (12 months old), and old (18 months old). Each age group consisted of two control groups (distilled water and olive oil) and three treatment groups: Piper betle (50 mg/kg body weight), tocotrienol-rich fraction (30 mg/kg), and Chlorella vulgaris (50 mg/kg). The duration of treatment for all three age groups was two months. Blood was withdrawn from the orbital sinus to determine the antioxidant enzyme activity and the malondialdehyde level. RESULTS: Piper betle increased the activities of catalase, glutathione peroxidase, and superoxide dismutase in the young, middle, and old age groups, respectively, when compared to control. The tocotrienol-rich fraction decreased the superoxide dismutase activity in the middle and the old age groups but had no effect on catalase or glutathione peroxidase activity for all age groups. Chlorella vulgaris had no effect on superoxide dismutase activity for all age groups but increased glutathione peroxidase and decreased catalase activity in the middle and the young age groups, respectively. Chlorella vulgaris reduced lipid peroxidation (malondialdehyde levels) in all age groups, but no significant changes were observed with the tocotrienol-rich fraction and the Piper betle treatments. CONCLUSION: We found equivocal age-related changes in erythrocyte antioxidant enzyme activity when mice were treated with Piper betle, the tocotrienol-rich fraction, and Chlorella vulgaris. However, Piper betle treatment showed increased antioxidant enzymes activity during aging.
Microwave dielectric ceramics in the Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) composition seri... more Microwave dielectric ceramics in the Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) composition series were fabricated via a solid-state mixed oxide route. All the compositions formed single phase in Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) solid solutions within the detection limit of in-house X-ray diffraction (XRD). The sintered microstructure of these ceramics comprised densely packed elongated and plate-like grains. The dielectric properties varied linearly with x. Relative permittivity (ε r ) increased from 47⋅2 to 54⋅5, unloaded quality factor multiplying the resonant frequency (Q u f o ) decreased from 11,984 to 9345 GHz and temperature coefficient of resonant frequency (τ f ) increased from -78⋅6 to 20 ppm/°C with an increase in x from 0 to 0⋅75. In the present study, ε r ≈ 51⋅6, Q u f o ≈ 10,160 GHz (5⋅37 GHz) and τ f ≈ -13⋅5 ppm/ o C were achieved for Sr 0⋅5 Ba 0⋅5 Ca 4 Nb 4 TiO 17 (x = 0⋅5) ceramics.
Hepatocellular carcinoma diagnosis and treatment has witnessed many major changes and challenges ... more Hepatocellular carcinoma diagnosis and treatment has witnessed many major changes and challenges in the past two decades. Increasing incidence of HCC has introduced new monitoring systems and increased the efficacy of screening tests, as well as prognosis of the disease, including the staging system, serological testing and diagnostic imaging. Moreover, surgical resection, liver transplantation and herbal therapy have improved treatment. The most encouraging specific serological marker for HCC is alpha fetoprotein (AFP), which, along with ultrasonography, has improved earlier detection of HCC. Most recently, circulating tumor cell measurement has emerged as a promising tool for the prognosis of HCC. Herbal drugs and herbal composite formula drugs are promising towards the prevention of invasion and proliferation of tumor cells. Chemotherapeutic agents, such as sorafenib, bevacizumab and erlotinib, which target growth factor receptors in signaling pathways, are also used as HCC treat...
Efficient absorption of light in visible range and enhance separation of photoexcited electron-ho... more Efficient absorption of light in visible range and enhance separation of photoexcited electron-hole pairs (EHPs) are crucial for improving the photoactivity of metal nonmetal codoped TiO 2. By using density functional theory (DFT) calculations, an effective metal ( Ag ) and nonmetal ( N ) codoping approach is described to modify the photoelectrochemical properties of titanium dioxide ( TiO 2). Nitrogen (N) doping introduces isolated N -2p states above the valence band maximum (VBM) which acts as an electron trap to promote EHP recombination. For Ag -doped TiO 2, Ag -4d states are introduced above the VBM which leads to the band gap narrowing. Silver (Ag) and nitrogen codoped TiO 2 possess stable configuration, narrowed band gap and best visible light absorption. Defect pair binding energy calculation shows that individual dopants, located at a distance of 8.951 Å bind each other, which indicates that the defect pair is stable compared to the isolated impurities in the host lattice. ...
Ca2Ce2Ti5O16 dielectric ceramics prepared by conventional solid-state ceramic route was investiga... more Ca2Ce2Ti5O16 dielectric ceramics prepared by conventional solid-state ceramic route was investigated. Phase composition and microwave dielectric properties were measured using XRD and Vector network analyzer, respectively. XRD analysis of the calcined and sintered samples revealed the formation of CeO2 and another unidentified phase (that vanished at ≥ 1400 °C) as secondary phases along with the parent Ca2Ce2Ti5O16 phase. The amount of the parent Ca2Ce2Ti5O16 phase increased with increasing sintering temperature from 1350 °C to 1450 °C accompanied by a decrease in the apparent density. The density decreased but ɛr and Qu f o increased with sintering temperature. An er ~ 81.5, Qu fo ~5915 GHz and t f ~ 219 GHz were achieved for the sample sintered at 1450 °C.
Ca2Ce2Ti5O16 ceramics processed via mix oxide route was investigated. Phase composition and micro... more Ca2Ce2Ti5O16 ceramics processed via mix oxide route was investigated. Phase composition and microwave dielectric properties were measured using X-ray diffraction and a cavity method, respectively. CeO2 and another unidentified phase (that vanishes at ≥1400 o C) existed as secondary phases along with the parent Ca2Ce2Ti5O16 phase. The amount of the parent Ca2Ce2Ti5O16 phase increased with increasing sintering temperature from 1350 o C to 1450 o C accompanied by a decrease in the apparent density. The density decreased but r and Qufo increased with sintering temperature. An r ~87.2, Qufo~ 5915 GHz and f~219 GHz was achieved for the sample sintered at 1450 o C.
Objectives: To determine the seropositivity of typhoid fever in febrile pediatric patients presen... more Objectives: To determine the seropositivity of typhoid fever in febrile pediatric patients presenting to tertiary care center. Methods: This observational study was conducted at Children Hospital Quetta (CHQ) from July 2011 to March 2012. The children with three or more days fever, no obvious focus of infection and clinically suspected of typhoid fever were screened. Sterile Blood samples were obtained from febrile patients and Widal and Typhidot® tests were performed for the diagnosis of Typhoid fever in the suspected populations. Results: Total of 2964 clinically suspected patients were screened for typhoid fever. Of these, 550 (18.6%) patients were positive serologically. The higher prevalence of the disease in hot summer season and increasing pattern of the disease was observed in summer days. The disease was higher in school age children under 5-10 years. Although non-significant association was observed on sex basis. Conclusion: The findings highlight the considerable burden of typhoid fever in preschool and schoolaged children. The variation in the disease pattern has also been observed under seasonal variation and different age groups, all of which need to be considered in deliberations to control the typhoid fever.
This study highlights the level of customer awareness about Islamic banks and determines the rela... more This study highlights the level of customer awareness about Islamic banks and determines the relationship between service quality and customer satisfaction with respect to Islamic banks. The survey based approach is used to collect the necessary data. 167 questionnaires were processed for the study. SPSS was used to analyze the data and the model was tested through AMOS. The study finds that there is a positive and significant relationship between customer satisfaction and constructs of service quality like compliance, assurance, empathy and representativeness. This study further concludes that compliance and representativeness influence more on customer satisfaction in Pakistani Islamic banks.
An evaluation for the development of a paper-based test of English as a Foreign Language (TOEFL) ... more An evaluation for the development of a paper-based test of English as a Foreign Language (TOEFL) for English Education Department students at one of the colleges in Langsa, Aceh, Indonesia, is necessary, considering their unsatisfactory scores even though the preparation program has been conducted. This research employed context, input, process, and product (CIPP) model developed by Stufflebeam upon the program. Methodologically, interviews, questionnaires, and observation were executed to five TOEFL lecturers and 34 students, while the data obtained were analyzed with the qualitative analysis method of Miles and Huberman. Based on the evaluation of context, the program had an appropriate background, goals, and objectives. Regarding the input, it still had problems related to the availability of resources and facilities. There were no standardized learning materials available, including the broken language laboratory. It affected the process since the lecturers could not maximize th...
Mobile devices have become the primary mode of Internet access. Yet, differences in mobile hardwa... more Mobile devices have become the primary mode of Internet access. Yet, differences in mobile hardware resources, such as device memory, coupled with the rising complexity of Web pages can lead to widely different quality of experience for users. In this work, we analyze how device memory usage affects Web browsing performance. We quantify the memory footprint of popular Web pages over different mobile devices, mobile browsers, and Android versions, analyze the induced memory distribution across different browser components (e.g., JavaScript engine and compositor), investigate how performance gets impacted under memory pressure and propose optimizations to reduce the memory footprint of Web browsing. We show that these optimizations can improve performance and reduce chances of browser crashes in low memory scenarios.
Titled the implementation of culture religious to students moral development in MTs Tanwirul Qulu... more Titled the implementation of culture religious to students moral development in MTs Tanwirul Qulub Sungelebak Karanggeneng Lamongan years lessons 2017 / 2018 aims to answer the question of how the application of religious culture in school impact the moral development in MTs. students Tanwirul Qulub Sungelebak. The implementation of tolerance attitude to the religious culture in schools it is incredibly important to be implemented. With in achieveing the goal of tolerance attitude to the religious culture will tertanamkan in the soul of a student to lose their indirect kind of way, as well as be an increase in the peace from us and the ketaqwaan students as well as strongly influenced the development of the act of moralizing school tuition. It is very relevant if we dock in the high number of a case that appear in the holy land, as as well as among students, they are promiscuous, immoral actions and ill treatment of an equality accompanied by murder case of not a few of the students cause reluctance of the doers. To express this researchers used qualitative research approach. In data collection, researchers used the interview, observation and documentation. And in data analysis, the use writers interaction which includes reduction interactive data, presentation of data and verification. The results of research obtained was first, form the implementation of culture religious in MTs. tanwirul qulub in the form of religious subjects additional namely Nahwu Shorof, Faraid, Ta'lim, Aswaja.And also be habituation of religious activities that is read the al-waqi'ah, read asmaul belong, prayer dhuha, read Tahlil together every day thursday. Second, the implementation of culture religious gives the effect on moral development school tuition. This is proven with a civility the school tuition and empathy high on teachers and others friend.
In present investigation, gelatin-based (AA-co-AMPS) hydrogels were prepared using N, N&a... more In present investigation, gelatin-based (AA-co-AMPS) hydrogels were prepared using N, N'-Methylenebisacrylamide (MBA) as a cross-linker and ammonium per sulfate (APS) as an initiator. The successful crosslinking and network formation was confirmed by Fourier transform infrared spectroscopy (FT IR). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) investigations proved the higher thermal stability and successful entrapment of oxaliplatin (OXP) in the polymeric network. X-ray diffraction (XRD) confirmed the loss in crystallinity of the drug after loading in the hydrogel. Scanning electron microscopy (SEM) revealed the porous surface of the hydrogel. The newly formed hydrogels were responsive to change in pH. The swelling, drug loading and drug release was increased with increase in concentration of acrylic acid (AA) while gelatin and 2-acrylamido 2-methylpronesulfonic acid (AMPS) were found to act inversely. The in-vitro enzymatic degradation study showed that the blank hydrogels were more stable against the blank PBS than the collagenase and lysozyme. MTT-assay proved that the blank hydrogels were cyto-compatible while free OXP as well as OXP-loaded hydrogels showed dose dependent controlled cytotoxicity against Vero, MCF-7 and HCT-116 cell lines. The preliminary safety evaluation and oral tolerability showed that the hydrogel suspension was biocompatible and well tolerable upto 4000 mg/kg of body weight without causing any hematological or histopathological changes in rabbits.
All book chapters are Open Access distributed under the Creative Commons Attribution 3.0 license,... more All book chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. However, users who aim to disseminate and distribute copies of this book as a whole must not seek monetary compensation for such service (excluded OMICS Group representatives and agreed collaborations). After this work has been published by OMICS Group, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. Notice: Statements and opinions expressed in the book are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book.
Medicinal chemistry (Shariqah (United Arab Emirates)), Jan 30, 2015
Every year, cancer takes the life of millions of people. Conventional treatments have produced un... more Every year, cancer takes the life of millions of people. Conventional treatments have produced unsatisfactory results for some types of cancer, and the side effects are extensive, leading to a shift in the focus of treatment towards alternative medicines. Indeed, medicinal plants have long been investigated by scientists for their anti-cancer properties. Some phytochemicals that are important active constituents of plants, including catechins, ursolic acid, silymarin, glycyrrhizin, ellagic acid, gallic acid and various types of flavonoids, have shown promise in future cancer management. The current review covers various aspects of cancer treatment based on medicinal plants at molecular level and sheds light on their structures and modes of action.
The aim of this study was to determine the erythrocyte antioxidant enzyme activity and the supero... more The aim of this study was to determine the erythrocyte antioxidant enzyme activity and the superoxide dismutase, catalase, glutathione peroxidase, and plasma malondialdehyde levels in aging mice and to evaluate how these measures are modulated by potential antioxidants, including the tocotrienol-rich fraction, Piper betle, and Chlorella vulgaris. METHOD: One hundred and twenty male C57BL/6 inbred mice were divided into three age groups: young (6 months old), middle-aged (12 months old), and old (18 months old). Each age group consisted of two control groups (distilled water and olive oil) and three treatment groups: Piper betle (50 mg/kg body weight), tocotrienol-rich fraction (30 mg/kg), and Chlorella vulgaris (50 mg/kg). The duration of treatment for all three age groups was two months. Blood was withdrawn from the orbital sinus to determine the antioxidant enzyme activity and the malondialdehyde level. RESULTS: Piper betle increased the activities of catalase, glutathione peroxidase, and superoxide dismutase in the young, middle, and old age groups, respectively, when compared to control. The tocotrienol-rich fraction decreased the superoxide dismutase activity in the middle and the old age groups but had no effect on catalase or glutathione peroxidase activity for all age groups. Chlorella vulgaris had no effect on superoxide dismutase activity for all age groups but increased glutathione peroxidase and decreased catalase activity in the middle and the young age groups, respectively. Chlorella vulgaris reduced lipid peroxidation (malondialdehyde levels) in all age groups, but no significant changes were observed with the tocotrienol-rich fraction and the Piper betle treatments. CONCLUSION: We found equivocal age-related changes in erythrocyte antioxidant enzyme activity when mice were treated with Piper betle, the tocotrienol-rich fraction, and Chlorella vulgaris. However, Piper betle treatment showed increased antioxidant enzymes activity during aging.
Microwave dielectric ceramics in the Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) composition seri... more Microwave dielectric ceramics in the Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) composition series were fabricated via a solid-state mixed oxide route. All the compositions formed single phase in Sr 1-x Ba x Ca 4 Nb 4 TiO 17 (0 ≤ x ≤ 0⋅75) solid solutions within the detection limit of in-house X-ray diffraction (XRD). The sintered microstructure of these ceramics comprised densely packed elongated and plate-like grains. The dielectric properties varied linearly with x. Relative permittivity (ε r ) increased from 47⋅2 to 54⋅5, unloaded quality factor multiplying the resonant frequency (Q u f o ) decreased from 11,984 to 9345 GHz and temperature coefficient of resonant frequency (τ f ) increased from -78⋅6 to 20 ppm/°C with an increase in x from 0 to 0⋅75. In the present study, ε r ≈ 51⋅6, Q u f o ≈ 10,160 GHz (5⋅37 GHz) and τ f ≈ -13⋅5 ppm/ o C were achieved for Sr 0⋅5 Ba 0⋅5 Ca 4 Nb 4 TiO 17 (x = 0⋅5) ceramics.
Hepatocellular carcinoma diagnosis and treatment has witnessed many major changes and challenges ... more Hepatocellular carcinoma diagnosis and treatment has witnessed many major changes and challenges in the past two decades. Increasing incidence of HCC has introduced new monitoring systems and increased the efficacy of screening tests, as well as prognosis of the disease, including the staging system, serological testing and diagnostic imaging. Moreover, surgical resection, liver transplantation and herbal therapy have improved treatment. The most encouraging specific serological marker for HCC is alpha fetoprotein (AFP), which, along with ultrasonography, has improved earlier detection of HCC. Most recently, circulating tumor cell measurement has emerged as a promising tool for the prognosis of HCC. Herbal drugs and herbal composite formula drugs are promising towards the prevention of invasion and proliferation of tumor cells. Chemotherapeutic agents, such as sorafenib, bevacizumab and erlotinib, which target growth factor receptors in signaling pathways, are also used as HCC treat...
Efficient absorption of light in visible range and enhance separation of photoexcited electron-ho... more Efficient absorption of light in visible range and enhance separation of photoexcited electron-hole pairs (EHPs) are crucial for improving the photoactivity of metal nonmetal codoped TiO 2. By using density functional theory (DFT) calculations, an effective metal ( Ag ) and nonmetal ( N ) codoping approach is described to modify the photoelectrochemical properties of titanium dioxide ( TiO 2). Nitrogen (N) doping introduces isolated N -2p states above the valence band maximum (VBM) which acts as an electron trap to promote EHP recombination. For Ag -doped TiO 2, Ag -4d states are introduced above the VBM which leads to the band gap narrowing. Silver (Ag) and nitrogen codoped TiO 2 possess stable configuration, narrowed band gap and best visible light absorption. Defect pair binding energy calculation shows that individual dopants, located at a distance of 8.951 Å bind each other, which indicates that the defect pair is stable compared to the isolated impurities in the host lattice. ...
Ca2Ce2Ti5O16 dielectric ceramics prepared by conventional solid-state ceramic route was investiga... more Ca2Ce2Ti5O16 dielectric ceramics prepared by conventional solid-state ceramic route was investigated. Phase composition and microwave dielectric properties were measured using XRD and Vector network analyzer, respectively. XRD analysis of the calcined and sintered samples revealed the formation of CeO2 and another unidentified phase (that vanished at ≥ 1400 °C) as secondary phases along with the parent Ca2Ce2Ti5O16 phase. The amount of the parent Ca2Ce2Ti5O16 phase increased with increasing sintering temperature from 1350 °C to 1450 °C accompanied by a decrease in the apparent density. The density decreased but ɛr and Qu f o increased with sintering temperature. An er ~ 81.5, Qu fo ~5915 GHz and t f ~ 219 GHz were achieved for the sample sintered at 1450 °C.
Ca2Ce2Ti5O16 ceramics processed via mix oxide route was investigated. Phase composition and micro... more Ca2Ce2Ti5O16 ceramics processed via mix oxide route was investigated. Phase composition and microwave dielectric properties were measured using X-ray diffraction and a cavity method, respectively. CeO2 and another unidentified phase (that vanishes at ≥1400 o C) existed as secondary phases along with the parent Ca2Ce2Ti5O16 phase. The amount of the parent Ca2Ce2Ti5O16 phase increased with increasing sintering temperature from 1350 o C to 1450 o C accompanied by a decrease in the apparent density. The density decreased but r and Qufo increased with sintering temperature. An r ~87.2, Qufo~ 5915 GHz and f~219 GHz was achieved for the sample sintered at 1450 o C.
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