Background: Since primitive times, man has gone in different ways to search for cures and relief from various diseases by using several plants, plant products and plant-derived products. Recently, there is a scientific curiosity and certain popularity with regard to screening essential oils and extracts from plants used medicinally all over the world. Objective: This study design to evaluate the component of ginger extracts in different solvents by HPLC in addition to evaluate the in vitro effects of it on microorganisms , especially the plant is used in Iraqi folk medicine as anti-inflammatory, antipyretic, anti-diabetic, relieving rheumatic pains and for treating stomach discomfort. Methods: The extraction of soluble compounds from ginger by the soxhlet method was performed by using methanol and n-hexane as solvents and the main composition of ginger extracts were analyzed by HPLC. Agarwell diffusion method tested antimicrobial activities of two crud extracts in different concentrations of plant on seven types of bacteria strains and one fungus. Results: Seven components were identified from the separation of ginger extracts by HPLC. The two extracts had antimicrobial activity, methanol extract was superior than n-hexane extract against the same tested microorganisms. Conclusion: The results of this study revealed that this plant possesses some antimicrobial properties as antibiotics and antifungal, therefore they can be used as a potential source of active ingredients for food, pharmaceutical industry or preservatives.
In this study, we aimed to increase the knowledge regarding the response mechanisms which were associated with the formation of CdS thin films. CdS thin film remains the most appealing alternative for many researchers, as it has been a capable buffer material for effect in film based polycrystalline solar cells (CdTe, CIGSe, CZTS). The Linker Assisted and Chemical Bath Deposition (LA-CBD) technique, which combines the Linker Assisted (LA) technique and the chemical bath deposition (CBD) method for forming high quality CdS thin film, was presented as an efficient and novel hybrid sensitization technique. CdS films were bound to soda lime with the help of electrostatic forces, which led to the formation of the intermediate complexes [Cd (NH3)4]2+ that helped in the collision of these complexes with a soda lime slide. Salvia dye and as a linker molecule 3-Mercaptopropionic acid (MPA) was used in the one step fabrication technique. Optical results showed that the bandgap varied in the range of (2.50 to 2.17) eV. Morphological properties showed a homogeneous distribution of the particles that aspherical in shape in the CdS + MPA + Salvia dye films. This technique significantly affected on the electrical characterizations of CdS films after the annealing process. The CdS + Ag + MPA + Salvia dye films showed the maximum carrier concentration and minimum resistivity, as 5.64 × 10 18 cm−3 and 0.83 Ω cm respectively.
In this study, we aimed to improve our understanding of the response mechanisms associated with the formation of CdS thin films. CdS thin film remains the most valuable option for many researchers, since it has shown to be an effective buffer material for film-based polycrystalline solar cells (CdTe, CIGSe, CZTS). We performed experimental and numerical simulations to investigate the effect of different thiourea concentrations on the characteristics of the CdS buffer layer. The experimental results reveal that an increase in thiourea concentrations had a direct effect on the optical results, with bandgap values ranging from (2.32 to 2.43) eV. XRD analysis confirmed that all deposited films were polycrystalline, except for [1/0.75], where there is no CdS formation. Electrical studies indicated that CdS with a molar ratio of [Cd]/[S] of 1 had the maximum carrier concentration (3.21 × 1014 cm−3) and lowest resistivity (1843.9 Ω·cm). Based on the proposed mechanism, three kinds of mechanisms are involved in the formation of CdS layers. Among them, the ion-by-ion mechanism has a significant effect on the formation of CdS films. Besides, modelling studies reveal that the optic-electrical properties of the buffer layer play a crucial role in influencing the performance of a CIGS solar cell.
The aim of this study is to acquire a deeper understanding of the response mechanism that is associated with the formation of CdS thin films. We presented an effective and new hybrid sensitisation technique, which involved the 1-step linker between the related chemical bath deposition (CBD) process and the traditional doping method during CBD for synthesising high-quality, CdS thin films. The mechanism for the combined synthesis of the films is also describes. CdS films were electrostatically bonded to soda-lime glass, causing the formation of the intermediate complexes [Cd(NH3)4]2+, which aided in the collision of these complexes with a soda-lime glass slide. In the one-step fabrication technique, 3-Mercaptopropionic Acid (MPA) was employed as a second source of sulphur ions and a linker molecule. Optical studies showed that the bandgap ranged between (2.26–2.52) eV. CdS + MPA films exhibited a uniform distribution of spherical molecules based on their morphological properties. After annealing, this approach significantly altered the electrical characteristics of CdS films. The CdS + MPA films displayed the highest carrier concentration whereas the CdS + Ag + MPA films exhibited the lowest resistivity, with a jump of 3 orders of magnitude.
Study of the pharmacological activity of new heterocyclic scaffolds becomes a passion of many medicinal chemists around the world. 1,2,4-thiadiazine 1,1-dioxide derivatives are one of the heterocyclic derivatives that haveattracted researchers' attention since the early 1940's. In spite of this, however, the study of the pharmacological activities of this nucleus remains scant and needs to shed lighter on it. Therefore, in this review, the authors in this review collected all the families that included this nucleus whose biological activities were studied for the period between 1993 and 2020 in order to get an idea of the effectiveness of these compounds and highlighted the most effective ones. In addition, knowing the pharmacological aspects that had not been studied previously to focus more on them in the future by interested researchers.
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