Periodico Tche Quimica

Shaima Rabeea Banoon

PERIÓDICO TCHÊ QUÍMICA

PERIÓDICO TCHÊ QUÍMICA ANNUAL TRANSPARENCY REPORT

《特谢化学期刊年度透明度报告》

Background: The cyano group is well-known for its strong electron-withdrawing properties, Effective in producing acrylonitrile when added to ?-conjugated alkene structures. The twisted structures of acrylonitrile help avoid the ACQ phenomenon and induce AIE properties, making acrylonitrile units important in various applications. Aims: Synthesis of acrylonitrile units via cyano aldol condensation by temperature control and study of AIE activity. Methods: The synthesis of diphenyl acrylonitrile units took place in two steps: 1- By o-arylation, linear aldehydes were synthesized, 2- Gradually adding p-ansiyl cyanide to the linear aldehydes in a round flask containing methanol and KOH. Results: Diphenyl acrylonitrile units were synthesized, and their structures were identified using IR, 1HNMR, 13CNMR, and mass techniques. The photophysical results indicated that diphenylacrylonitrile-bearing aldehyde compounds have fluorescence with a wavelength ranging between 400-500 nm and moderate AIE activity. Discussion: The prepared diphenylacrylonitrile-bearing aldehydes units showed moderate AIE activity in the aggregation state, where the fluorescence intensity increases with increasing water percentage in the THF/H2O mixture and reaches its peak at 80%. The reason lies in the fact that the cyano group forms acrylonitrile with twisted structures, which avoids ACQ and enhances the AIE properties. Conclusions: by controlling the temperature and through a facile aldol condensation, phenylacrylonitrile units were synthesized in good yields. Their photophysical properties were studied, and they were found to have moderate AIE activity.

Rehab Katan Aflouk

Usama Ali Muhsen

Ali Kareem A. Al-Lami

SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NEW DIPHENYLACRYLONITRILE-BEARING ALDEHYDES

新型二苯基丙烯腈基醛的合成与光物理性质

Background: Pathogenic bacteria represent a major concern in that they can affect public health. Thus, an ongoing race between pharmaceutical manufacturers and the elevation of bacterial resistance to antibiotics is at its peak. In order to overcome this obstacle, recent studies are directed toward using natural alternatives that can replace antibiotics and have a significant impact on these pathogenic bacteria. Aim: the main aims of this study were (1) finding a natural and eco-friendly alternative for traditional chemical antibiotics that could give a good inhibition for the growth of some of the well-known pathogenic bacteria (2) testing the ability of five plant suspensions which are clove, hibiscus, mustard, cinnamon suspensions, and lemon juice as well as acetic acid (4%) to inhibit the growth of four pathogenic bacterial species which are Klebsiella pneumonia, Enterobacter cloacae, Escherichia coli, and Staphylococcus aureus. (3) compare the effects of the plant's suspension with the effect of several known antibiotics and explain their mode of action. Methods: the aqueous plant extract was prepared from the dried plant parts, and the purified bacteria colonies were obtained from hospital samples. Then, the ability of the plant extracts against these bacteria was tested using the agar-well diffusion method, and the inhibition zone for each bacteria was determined. Results: The results showed that K. pneumoniae was sensitive to the used antibiotics except chloramphenicol, nitrofurantoin, and ampicillin, and it was sensitive for all the extracts except for mustard. While E. cloacae was resistant to tetracycline, co-trimoxazole, ampicillin, and nitrofurantoin, it had an intermediate sensitivity to chloramphenicol. In contrast, it was sensitive to all extracts except for the mustard extract. However, E. coli was resistant to all antibiotics except for tetracycline, amikacin, nitrofurantoin, and colistin, while it has intermediate sensitivity to gentamycin, though it was sensitive to all plant extracts except mustard extract and acetic acid. Staphylococcus aureus was resistant to kanamycin, co-trimoxazole, chloramphenicol, ampicillin, and nitrofurantoin, though it has intermediate sensitivity to gentamycin and colistin, while it was sensitive to all plant extracts as well as acetic acid. Discussion: From the results, it was obvious that the most effective extracts were hibiscus and clove, followed by cinnamon, lemon juice, and acetic acid, while only S. aureus was sensitive to mustard extract.Conclusions: The results of the study showed that the natural plants' extracts were effective against different pathogenic bacteria with dissimilar degrees of effect.

Mahammed E. J. Al-Defiery

Sabreen A. A. Kammal

Nebras M. Sahi

Ali K. Al-Muttairi

INVESTIGATING THE ABILITY OF NATURAL MATERIALS TO INHIBITION OF SOME PATHOGENIC BACTERIA

探究天然材料抑制某些病原菌的能力

Background: Chemistry is one of the least preferred courses and is considered an abstract and difficult branch of science by students. In order to make chemistry more meaningful and interesting, it is of great importance to do more laboratory activities and to relate chemistry to daily life. When designing chemistry programs, the skills that students need to develop should be taken into account. Among these skills, laboratory perception and self-efficacy are the most prominent ones. Aim: This research was conducted to determine the perceptions of high school students regarding laboratory practices to reveal their self-efficacy in chemistry laboratories and also to determine the changes in perception and self-efficacy according to grade level and gender. Methods: The study was designed using the relational survey model. The study sample consists of 423 high school students. MANOVA test was performed to determine the effects of gender and grade level on students' laboratory perception and self-efficacy. Results: According to the MANOVA results, the gender effect is significant, but the class level effect and the gender*class level effect are not significant. However, there was a difference with respect to gender in the dimensions of the goals of the laboratory, the effectiveness of the laboratory, and the planning of the chemistry perception. It was determined that female students had higher perceptions of laboratory goals, while male students had higher perceptions of laboratory effectiveness and planning. Discussion: It is thought that examining the perceptions and self-efficacy of high school students regarding laboratory activities before they start their undergraduate education and analyzing how these factors are related to various variables can guide university-level education.Conclusions: These results indicate that high school students' perceptions of chemistry laboratory practices and their self-efficacy in the lab are at a moderate level. To enhance students' perceptions of chemistry, it is recommended that hands-on activities be incorporated into the curriculum.

Fatma Merve Mustafaoglu

Fatma Alkan

AN ANALYSIS OF HIGH SCHOOL STUDENTS' LABORATORY SELF-EFFICACY BELIEFS AND PERCEPTIONS OF LABORATORY APPLICATIONS

高中生实验室自我效能信念及对实验室应用感知之分析

Background: Adolescents face an increased risk of depression due to hormonal fluctuations and the impact on physiological and immunological biomarkers, which are associated with a heightened risk of symptoms of depression during puberty. Aims: Investigate the roles of interleukin-6 (IL-6) and vitamin D (Vt.D) as influential factors in increasing the risk of depression among adolescents. Methods: Cross-sectional study of 130 adolescents aged 12 to 18, between November 2023 and February 2024. This study examined serum IL-6 and Vt.D levels. Additionally, the calculation relies on the Beck Depression Inventory to measure the severity of depression. Results: Adolescents have a significant increase in depression symptoms, with 59.2% showing signs of depression. Depressed adolescents show a significant increase (p&lt;0.001) in IL-6 and decreased Vt. D levels compared to non-depressed individuals. Depression scores were significantly correlated positively with IL-6 levels and negatively with Vt. D levels and Linear regression analysis exhibit a significant positive predictor of IL-6 (B: 4.430; 95% CI: 3.023 to 5.836). Vt. D is a significantly negative predictor (B: -0.145; 95% CI: -0.220 to -0.071) associated with depression scores. Logistics regression showed the risk of depression is higher in females (59.7%; OR: 2.33; p=0.002) compared to males (40.3%; OR: 0.939; p=0.803), overweight and obese adolescents (OR: 3.750, p=0.019; and OR: 2.333, p=0.022), than normal weight and underweight peers. They highly predicted depression in adolescents with deficiency Vt. D (OR: 24.4, p&lt;0.001), and depressed severity increased with no take Vt. D supplement (OR: 1.769, p=004), more than those who had taken Vt. D Supplement (OR: 0.571, p=0.207). Discussion: Vitamin D affects serotonin synthesis by a unique biological mechanism. Serotonin is always involved in the pathophysiology of depression. Vitamin D may have a neuroprotective effect on the inflammatory process in the body. Support immunomodulation leads to an increase in inflammatory cytokines and vitamins, which suppresses the synthesis of inflammatory cytokines such as IL-6 by monocytes. Conclusions: The likelihood of severe adolescent depression was found to be associated with elevated IL-6 levels and a deficiency in Vitamin D, serving as available predictors.

Intisar Razzaq Sharba

Shifaa Kadim Wajid

THE IMPACT OF VITAMIN D AND INTERLEUKIN-6 AS RISK FACTORS ASSOCIATED WITH DEPRESSION ADOLESCENTS

维生素D和白细胞介素-6作为与青少年抑郁症相关风险因素的影响

短名
Journal Impact	0.17
国际分区	CHEMISTRY, MULTIDISCIPLINARY(Q4)

涉及主题	生物化学物理有机化学工程类材料科学量子力学医学计算机科学地质学生物化学生态学数学环境科学地理复合材料冶金
出版信息	出版商: Tche Quimica Group，出版周期: ，期刊类型: journal，开源期刊: 否
基本数据	创刊年份: 2011，原创研究文献占比: 92.31%，自引率:0.00%， Gold OA占比: 0.00%

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PERIÓDICO TCHÊ QUÍMICA ANNUAL TRANSPARENCY REPORT

SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NEW DIPHENYLACRYLONITRILE-BEARING ALDEHYDES

INVESTIGATING THE ABILITY OF NATURAL MATERIALS TO INHIBITION OF SOME PATHOGENIC BACTERIA

AN ANALYSIS OF HIGH SCHOOL STUDENTS' LABORATORY SELF-EFFICACY BELIEFS AND PERCEPTIONS OF LABORATORY APPLICATIONS

THE IMPACT OF VITAMIN D AND INTERLEUKIN-6 AS RISK FACTORS ASSOCIATED WITH DEPRESSION ADOLESCENTS

PERIÓDICO TCHÊ QUÍMICA ANNUAL TRANSPARENCY REPORT

SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NEW DIPHENYLACRYLONITRILE-BEARING ALDEHYDES

INVESTIGATING THE ABILITY OF NATURAL MATERIALS TO INHIBITION OF SOME PATHOGENIC BACTERIA

AN ANALYSIS OF HIGH SCHOOL STUDENTS' LABORATORY SELF-EFFICACY BELIEFS AND PERCEPTIONS OF LABORATORY APPLICATIONS

THE IMPACT OF VITAMIN D AND INTERLEUKIN-6 AS RISK FACTORS ASSOCIATED WITH DEPRESSION ADOLESCENTS