Publications

Abstract NH 3 production vastly relies on the Haber‐Bosch process, causing high energy consumption and carbon dioxide emission. Electrochemical N 2 fixation is considered as an eco‐friendly and sustainable process, but its efficiency depends greatly on the activity and stability of the catalyst used. Therefore, it is imperative to develop efficient electrocatalysts in the field of nitrogen reduction reaction (NRR). In this communication, we propose that structured polyaniline is an efficient metal‐free NRR electrocatalyst in aqueous solution, achieving a NH 3 yield rate of 5.45×10 −11 mol s −1 cm −2 and a Faradaic efficiency of 3.76 % at −0.70 and −0.60 V vs. reversible hydrogen electrode in 0.1 M HCl, respectively. Furthermore, it also possesses high selectivity and stability.

This study reports the synthesis of a series of new 2-amino-3-cyano-8-methyl-4-substituted-5,6,7,8-tetrahydroquinolines along with some derived fused-ring systems. Ten compounds have shown remarkable cytotoxic activity against human colon carcinoma HT29, hepatocellular carcinoma HepG2 and Caucasian breast adenocarcinoma MCF7 cell lines. Six compounds showed considerable broad-spectrum cytotoxic activity among which two proved to be the most active derivatives. Likewise, seven compounds from the series were found to exhibit significant antimicrobial activity and three of them proved to be the most active candidates. Two alkylthio-pyrimido quinolines are suggested as possible antimicrobial and anticancer candidates in the present series.

A critical component of Saudi Arabia's Vision 2030 reform agenda is its alignment with the Sustainable Development Goals (SDGs), particularly SDG 3, which is dedicated to the promotion of health and well-being for all. This narrative review offers a mid-term assessment of Saudi Arabia's progress in attaining these objectives, with a particular emphasis on the public health initiatives and comprehensive healthcare reforms that have been implemented as part of this vision. The Kingdom has accomplished substantial reductions in maternal and neonatal mortality rates, with skilled birth attendance reaching nearly universal levels. Saudi Arabia is a regional leader in the field of infectious diseases, having achieved the 95-95-95 HIV targets and significantly reduced the incidences of tuberculosis and malaria. Additionally, the rates of premature mortality from conditions such as cancer, diabetes, and cardiovascular diseases have decreased as a result of efforts to combat non-communicable diseases. Mental health services have been substantially expanded, which has resulted in one of the lowest suicide rates reported worldwide. Substantial investments have collectively improved the universality and quality of healthcare services in health infrastructure, such as the expansion of primary healthcare centers and the integration of digital health solutions, which have supported these health achievements. Saudi Arabia continues to confront persistent obstacles, including the management of the increase in non-communicable diseases, the mitigation of environmental health risks, and the reconciliation of healthcare access disparities, despite these accomplishments. The review recommends that the social determinants of health be addressed through a sustained commitment to cross-sectoral collaboration, enhanced data collection and utilization for health policy-making, and further integration of technology in healthcare delivery. This review not only emphasizes the Kingdom's successes but also the intricate challenges it has encountered, providing valuable insights into the strategic planning required to maintain health gains and achieve SDG 3 by 2030. Saudi Arabia's innovative approach and robust policy implementation serve as a model for the integration of health priorities into national development frameworks, thereby improving health outcomes and contributing to sustainable development.

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

The synthesis and characterization of Co(II) and Ni(II) mixed ligand complexes are derived from isoniazid, 9-fluorenoneandoxalate. The metal complexes were characterized on the basis of elemental analysis, IR, UV-visible, CV, PXRD, and molar conductance analytical data, viz., all the metal complexes were suggested in an octahedral geometry, respectively. The mixed ligand complexes are formed in the 1:1:2:1 (M:L1:L2:L3) ratios, as found from the elemental analyses, and originate to have the formula [M(L1)(L2)2(L3)]. Where M = Co(II), Ni(II), L1 = isoniazid, L2 = 9-fluorenone, and L3 = oxalate. The molar conductance data reveals that the complexes are non-electrolytes. The cyclic voltammogram of the Co(II) complex revealed that the quasi-reversible single electron transfer process and Ni(II) complex corresponding to a one-electron transfer process were observed during controlled potential electrolysis. IR spectra show that the ligands are coordinated to the metal ions through N and O donor sites of isoniazid-N, 9-fluorenone-O and oxalate-O. Magnetic moment values and UV-visible spectra were used to infer the coordinating of the geometrics of these complexes found to be octahedral. The PXRD patterns suggest that all the complexes are crystalline phases. The metal chelates have been screened for antimicrobial, antioxidant and anti-inflammatory activities, and our findings have been reported, explained and compared with some known antibiotics.

The future of energy generation is well in tune with the critical needs of the global economy, leading to more green innovations and emissions-abatement technologies. Introducing concentrated photovoltaics (CPVs) is one of the most promising technologies owing to its high photo-conversion efficiency. Although most researchers use silicon and cadmium telluride for CPV, we investigate the potential in nascent technologies, such as perovskite solar cell (PSC). This work constitutes a preliminary investigation into a "large-area" PSC module under a Fresnel lens (FL) with a "refractive optical concentrator-silicon-on-glass" base to minimize the PV performance and scalability trade-off concerning the PSCs. The FL-PSC system measured the solar current-voltage characteristics in variable lens-to-cell distances and illuminations. The PSC module temperature was systematically studied using the COMSOL transient heat transfer mechanism. The FL-based technique for "large-area" PSC architectures is a promising technology that further facilitates the potential for commercialization.

In the present scenario, the searching for novel plant fibers able to be used as reinforcement of polymer composites is highly appreciable. This study deals with extraction and characterization of Eleusine indica grass fibers extracted from its stem by manual retting process. From this study, it was found that the Eleusine indica has higher cellulose of 61.3 wt% content, density of 1143 kg/m3, average tensile strength and Young’s modulus equal to 22 MPa and 10.75 GPa, respectively. From the XRD studies, it was noted that the Crystallinity Index (CI) of Eleusine indica was 45%. The surface morphology of Eleusine indica grass was examined using a Scanning Electron Microscope (SEM) and Chemical functional group were confirmed by Fourier transform infrared spectroscopy (FT-IR). The thermal stability of EIF was evaluated using TG and DTG curves from Thermogravimetric (TG) analysis. The characterization results confirmed that Eleusine indica grass could be used for the production of sustainable fiber-reinforced polymer composites.