Epidemiological Data of Neurological Disorders in Pakistan and Neighboring Countries: A Review

Neurological disorders are the impairments of nervous system and are an important and growing cause of morbidity, mortality, and disability. In addition to health costs, those suffering from these conditions are also frequently victimized of stigmatization and discrimination. Stigmatization further minimizes the patients\u27 access to treatment and social activities. These disorders, therefore, require special attention particularly in developing countries where unfortunately, the burden of these disorders remains largely unrecognized. Moreover, the burden imposed by such chronic neurological conditions in general can be expected to be particularly devastating in poor populations. These conditions are emerging as severe public health concerns in the developing countries due to the facts such as unawareness, Illiteracy, large numbers of people who are untreated, and unavailability of inexpensive but effective interventions. Regrettably, reliable population-based data from developing countries including Pakistan on the epidemiology of neurological disorders are extremely limited. Although, some information on epidemiological aspects of neurological diseases are available from some developing countries (Pakistan, Iran, India, Sri Lanka, Saudi Arabia and China) but disease prevalence and pattern are based on geographical, social, cultural, religious, and ethnic factors. In this review, w e critically analyzed data of 209 studies regarding the burden and prevalence of hypertension, depression, Stroke, Alzheimer\u27s disease (AD), epilepsy, and Parkinson\u27s disease (PD) in Pakistan and neighboring countries

In Situ Printing and Functionalization of Hybrid Polymer-Ceramic Composites Using a Commercial 3D Printer and Dielectrophoresis—A Novel Conceptual Design

Three-dimensional printing-based additive manufacturing has emerged as a new frontier in materials science, with applications in the production of functionalized polymeric-based hybrid composites for various applications. In this work, a novel conceptual design was conceived in which an AC electric field was integrated into a commercial 3D printer (-based fused filament fabrication (FFF) working principle) to in situ manufacture hybrid composites having aligned ceramic filler particles. For this work, the thermoplastic poly lactic acid (PLA) was used as a polymer matrix while 10 vol% KNLN (K0.485Na0.485Li0.03NbO3) ceramic particles were chosen as a filler material. The degree of alignment of the ceramic powders depended upon print speed, printing temperature and distance between electrodes. At 210 °C and a 1 kV/mm applied electric field, printed samples showed nearly complete alignment of ceramic particles in the PLA matrix. This research shows that incorporating electric field sources into 3D printing processes would result in in situ ceramic particle alignment while preserving the other benefits of 3D printing

Poly(3-hydroxybutyrate) production in an integrated electromicrobial setup: Investigation under stress-inducing conditions

Poly(3-hydroxybutyrate) (PHB), a biodegradable polymer, can be produced by different microorganisms. The PHB belongs to the family of polyhydroxyalkanoate (PHA) that mostly accumulates as a granule in the cytoplasm of microorganisms to store carbon and energy. In this study, we established an integrated one-pot electromicrobial setup in which carbon dioxide is reduced to formate electrochemically, followed by sequential microbial conversion into PHB, using the two model strains, Methylobacterium extorquens AM1 and Cupriavidus necator H16. This setup allows to investigate the influence of different stress conditions, such as coexisting electrolysis, relatively high salinity, nutrient limitation, and starvation, on the production of PHB. The overall PHB production efficiency was analyzed in reasonably short reaction cycles typically as short as 8 h. As a result, the PHB formation was detected with C. necator H16 as a biocatalyst only when the electrolysis was operated in the same solution. The specificity of the source of PHB production is discussed, such as salinity, electricity, concurrent hydrogen production, and the possible involvement of reactive oxygen species (ROS)

Combining experimental and theoretical insights for reduction of CO2 to multi-carbon compounds

The electrochemical reduction of carbon dioxide is a promising method for both recycling of atmospheric CO2 and storing renewably produced electrical energy in stable chemical bonds. In this paper, we review the current challenges within this promising area of research. Here we provide an overview of key findings from the perspective of improving the selectivity of reduction products, to serve as a contextual foundation from which a firmer understanding of the field can be built. Additionally, we discuss recent innovations in the development of catalytic materials selective toward C3 and liquid products. Through this, we form a basis from which key mechanisms into C3 products may be further examined. Carbon–carbon (C–C) bond formation provides a key step in the reduction of CO2 to energy dense and high value fuels. Here we demonstrate how variations in catalytic surface morphology and reaction kinetics influence the formation of multi-carbon products through their impact on the formation of C–C bonds. Finally, we discuss recent developments in the techniques used to characterise and model novel electrocatalysts. Through these insights, we hope to provide the reader with a perspective of both the rapid progress of the field of electrocatalysis, as well as offering a concise overview of the challenges faced by researchers within this rapidly developing field of research

Ferula asafoetida Linn. is effective for early functional recovery following mechanically induced insult to the sciatic nerve of a mouse model

Purpose: To evaluate the effect of Ferula asafoetida (oleo gum resin powder) on sensory and motor functions retrieval on an induced sciatic nerve injury in a mouse model.Methods: A mechanical crush was inserted in the sciatic nerve of all the experimental mice after acclimatization. The mice were allocated to four groups; one normal chow group (control, n = 7) and three Ferula asafoetida chow groups (each n = 7) of different doses (50, 100 and 200 mg/kg). Muscle grip strength, muscle mass, and sciatic functional index were measured to evaluate the motor function regain, while sensory function regain was assessed by hot plate test. Oxidative stress and glycemic levels were measured by biochemical assays.Results: The findings of this study indicate that Ferula asafoetida 200 mg/kg has a highly significant (p≤ 0.001) ameliorating effect in terms of improved grip strength (77.7 ± 5.4 % for 200 mg/kg vs. 46 ± 5.1 % for control), reversal of SFI towards normal ( -34 ± 8.1 for 200 mg/kg group vs. –61 ± 6.1 for control), decrease in paw withdrawal latency (7.10 ± 0.06 s for 200 mg/kg group vs. 15 ± 0.5 s for control) on day 12 post-injury, as well as restoration of skeletal muscle mass towards normal. Interestingly, F. asafoetida chow 50 mg/kg and 100 mg/kg groups also impacted significant (p < 0.01) improvement in the ameliorative effect. However, the differences among all treatment groups in ameliorating recovery were not significant (p > 0.05). Moreover, comparatively improved (p < 0.0001) total antioxidant capacity along with reduced total oxidant status (p = 0.01) in the Ferula asafoetida chow (200 mg/kg) group, indicate the antioxidative effect of this plant. Furthermore, the treated mice (200 mg/kg) also expressedan improved glycemic level (p = 0.0005).Conclusion: Ferula asafoetida supplementation helps to accelerate both sensory and motor function retrieval following sciatic nerve injury. This  improvement is thought to be correlated with the antioxidant capacity of the plant. However, further investigations are required to identify the therapeutic principles responsible for the observed actions. Keywords: Sciatic nerve injury, Ferula asafoetida, Function recovery, Oxidative stress, Biochemical analysi

The potential of plasma-derived hard carbon for sodium-ion batteries

Sodium-ion batteries (SIB) are receiving wider attention due to sodium abundance and lower cost. The application of hard carbon to SIB electrodes has shown their significant potential to increase rates, capacities, stability, and overall performance. This article describes the significance of hard carbon, its structural models, and mechanisms for SIB applications. Further, this work unveils the potential of plasma methods as a scalable and sustainable manufacturing source of hard carbon to meet its increasing industrial demands for energy storage applications. The working mechanisms of major plasma technologies, the influence of their parameters on carbon structure, and their suitability for SIB applications are described. This work summarises the performance of emerging plasma-driven hard carbon solutions for SIB, including extreme environments, and revolves around the flexibilities offered by plasma methods in a wider spectrum such as multi-materials doping, in-situ multilayer fabrication, and a broad range of formulations and environments to deposit hard carbon-based electrodes for superior SIB performance. It is conceived the challenges around the stable interface, capacity fading, and uplifting SIB capacities and rates at higher voltage are currently being researched, Whereas, the development of real-time monitoring and robust diagnostic tools for SIB are new horizons. This work proposes a data-driven framework for plasma-driven hard carbon to make high-performance energy storage batteries

Enhancement of solubility and dissolution rate of ebastine fast-disintegrating tablets by solid dispersion method

Purpose: To investigate the efficiency of different solubilizing agents in improving solubility as well as dissolution rate of ebastine (a BCS class II drug) by incorporating prepared solid dispersion into fast disintegrating tablets.Method: The solubility of ebastine was determined in distilled water, lipids and solubilizing agents. Subsequently, the binary solid dispersions were prepared by kneading method using varying weight ratios of ebastine and solubilizing agents. The solid dispersions were then incorporated into fast disintegrating tablets (SD-FDT). Central composite rotatable design (CCD) was used to determine the impact of super disintegrating agents on disintegration time and friability of tablets. The solubility and dissolution rate of developed SD-FDT were compared with a marketed brand. The solid dispersion particles were characterized by Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), powder x-ray diffraction (P-XRD) and scanning electron microscopy (SEM).Results: The saturated solubility of pure ebastine in water was 0.002 ± 0.041 mg/ml while the aqueous solubility of EBT/poloxamer solid dispersion SET3 (P) was 0.018 ± 2.510 mg/ml; on the other hand, EBT/soluplus solid dispersion SET1(S) has an aqueous solubility of 0.242 ± 1.390 mg/ml. Within 30 min, drug release was 14.00 ± 1.77, 78.00 ± 2.31 and 98.70 ± 2.54 % from pure EBT, SET3 (P) and SET1(S), respectively.Conclusion: The solubility and dissolution rate of ebastine has been successfully enhanced by incorporating its solid dispersion in fast-disintegrating tablets (SD-FDT). Keywords: Ebastine, Solid dispersion, Poloxamer 188, Soluplus, Solubility, Dissolutio

Understanding the role of metal supported on TiO2 in photoreforming of oxygenates

To achieve net-zero targets regarding GHG emissions by 2050, the identification of sustainable energy vectors is critical. In this context, photoreforming presents a potential candidate for recycling and transforming widely available biomass-derived wastes into clean hydrogen fuel, such as crude glycerol from biodiesel and a potential future H2 production opportunity from bioethanol. Many years of work has proved that TiO2 is an excellent material for photoreforming of organics due to its stability, availability, and environmentally friendly characteristics as compared to other semiconductors. However, photoreforming faces several obstacles, including the comparatively low hydrogen generation under Sun-equivalent light sources and the need of expensive noble metals. Efforts have been made in several directions, such as extending light absorption by TiO2 to the visible range, reducing the recombination rate of charge carriers, and preventing back reactions. To overcome these challenges, many methods have been proposed, such as controlling the phase and morphology of TiO2 nanoparticles, decoration with various metal co-catalysts, doping with metal and non-metal ions, plasmonic enhancement, and preparation of composite systems. Although each approach has its own merits, metal loading has proven to be the most effective among them all. This review provides a deep insight into the underlying role of metal towards the enhancement of TiO2 catalytic activity, focusing on the findings of recent published work. We discuss in detail the effect of various metals on TiO2 electronic structure, preparation methods, role in light absorption (surface Plasmon resonance) and chemical changes during various photoreforming steps. Following this we extend our discussion to dye sensitized systems and catalyst testing benchmarking. At the end of the review, we provide possible future research directions to enhance the photocatalytic activity of TiO2 based photocatalysts for photoreforming

Enhancement of mechanical and corrosion resistance properties of electrodeposited Ni–P–TiC composite coatings

In the present study, the effect of concentration of titanium carbide (TiC) particles on the structural, mechanical, and electrochemical properties of Ni–P composite coatings was investigated. Various amounts of TiC particles (0, 0.5, 1.0, 1.5, and 2.0 g L−1) were co-electrodeposited in the Ni–P matrix under optimized conditions and then characterized by employing various techniques. The structural analysis of prepared coatings indicates uniform, compact, and nodular structured coatings without any noticeable defects. Vickers microhardness and nanoindentation results demonstrate the increase in the hardness with an increasing amount of TiC particles attaining its terminal value (593HV100) at the concentration of 1.5 g L−1. Further increase in the concentration of TiC particles results in a decrease in hardness, which can be ascribed to their accumulation in the Ni–P matrix. The electrochemical results indicate the improvement in corrosion protection efficiency of coatings with an increasing amount of TiC particles reaching to ~ 92% at 2.0 g L−1, which can be ascribed to a reduction in the active area of the Ni–P matrix by the presence of inactive ceramic particles. The favorable structural, mechanical, and corrosion protection characteristics of Ni–P–TiC composite coatings suggest their potential applications in many industrial applications

How to go beyond C1 products with electrochemical reduction of CO2

The electrochemical reduction of CO2 to produce fuels and value-added organic chemicals is of great potential, providing a mechanism to convert and store renewable energy within a carbon-neutral energy circle. Currently the majority of studies report C1 products such as carbon monoxide and formate as the major CO2 reduction products. A particularly challenging goal within CO2 electrochemical reduction is the pursuit of multi-carbon (C2+) products which have been proposed to enable a more economically viable value chain. This review summaries recent development across electro-, photoelectro- and bioelectro-catalyst developments. It also explores the role of device design and operating conditions in enabling C–C bond generation