Chemical and Environmental Science Archives最新文献

An appraisal of the geochemistry and geotectonic settings of the pan african rocks around akure and are-ekiti and environments, Southwestern, Nigeria 尼日利亚西南部akure和are-ekiti周围泛非岩石的地球化学和大地构造环境评价

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2022.2404

Obasi Romanus Ayoola

{"title":"An appraisal of the geochemistry and geotectonic settings of the pan african rocks around akure and are-ekiti and environments, Southwestern, Nigeria","authors":"Obasi Romanus Ayoola","doi":"10.47587/cesa.2022.2404","DOIUrl":"https://doi.org/10.47587/cesa.2022.2404","url":null,"abstract":"The geochemical characteristics of the Pan-African rocks from Akure and Are –Ekiti and Environs show a minor variations in the contents of silica (SiO2 50.18-98.92 wt%,), alumina, Al2O3 (0.26-17.26wt%), potash (K2O, 0.07-5.98wt%), and iron F2O3 (0.52-10.77wt%) respectively. The rocks suites from both areas are also characterized by high alumina, high silica, and presence of biotite, microcline, monzogranite, syenogranites, diorite, granodiorite as well as granites. The rocks from both studied areas plotted into the S-Type and I-Type granites suggestive of their derivation from mixed sources. The presence of shoshonitic series suggests rock association characterized by k-rich, high Na2O + K2O and low TiO2. The granites from b Akure and Are Ekiti and environs are characteristically potassic with metaluminous I-Type and peraluminous S-Type affinity and elong to high-K calcalkaline to shoshonitic series. The rocks are strongly enriched in Ba-Sr with pronounced negative Eu anomaly, belonging to syn-to post collisional tectonic setting. However, the plots of Rb versus Y+Nb, Rb versus Ta + Yb, Ta versus Yb, Nb versus Y, as well as Ta versusYb respectively showed that the granitic rocks of Akure and Are Ekiti and environs were formed in the tectonic environments of volcanic arcs, syn-collisional and post collisional as well as within plate settings, suggesting their derivation from fractional crystallization and partial melting.","PeriodicalId":331170,"journal":{"name":"Chemical and Environmental Science Archives","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133879221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Estimation of the numerical number of some insect predators on four tomato cultivars 4个番茄品种若干天敌数量的估算

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2022.2402

Fadel Rahim Ali Khazraji, Husham Naji Hameed

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Assessment of serum levels of malondialdehyde and interleukine-5 in asthmatic patients receiving corticosteroid therapy 接受皮质类固醇治疗的哮喘患者血清丙二醛和白介素-5水平的评估

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2022.2401

Raed H. Mahmoud, Ibrahim Khalaf Awath

{"title":"Assessment of serum levels of malondialdehyde and interleukine-5 in asthmatic patients receiving corticosteroid therapy","authors":"Raed H. Mahmoud, Ibrahim Khalaf Awath","doi":"10.47587/cesa.2022.2401","DOIUrl":"https://doi.org/10.47587/cesa.2022.2401","url":null,"abstract":"Asthma is a very common chronic disease involving the respiratory system in which the airways occasionally constrict, become inflamed, and are lined with excessive amounts of mucus, often in response to one or more triggers. The current work represents an experimental study that was conducted in Tikrit Teaching Hospital, during the period from April 2008 to the end of November 2008. Around 90 individuals were included in this study from both genders, their ages were from 18 to 80 years. A total of 70 patients with mild and moderate asthma were included in this study from both genders. Their age range from 18 -80 years. It is evident from this study that the highest percentage was 69.2% in patients with mild asthma on steroids was females and 52.6% in asthmatic patients without steroid therapy males, while in mild asthma without steroids and moderate asthma on steroids the percentage is the same in both genders and which was 37.5% and 50% respectively. There was no significant difference between different study groups regarding gender distribution (P > 0.05). The mean level of serum malondialdehyde was 3.39 ± 0.42 in mild asthma without steroid therapy, 4.03 ± 0.18 in moderate asthma without steroid therapy, 2.18 ± 0.12 in mild asthma on steroid therapy, while 2.77 ± 0.56 in moderate asthma on steroid therapy and 3.33 ± 0.16 in the control group. reveals that the mean level of serum interleukin-5 was10.78 ± 3.19 in mild asthma without steroid therapy, 16.65 ± 4.99 pg/ml in moderate asthma without steroid therapy, 3.94 ± 0.82 pg/ml in mild asthma on steroid therapy, while 4.10 ± 1.08 pg/ml in moderate asthma on steroid therapy and 3.32 ± 0.38 pg/ml in the control group.","PeriodicalId":331170,"journal":{"name":"Chemical and Environmental Science Archives","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115099853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Assessment of nitrate concentrations in groundwater of Tal Abta SubDistrict, Iraq: Health risks and pollution evaluation 伊拉克Tal Abta分区地下水硝酸盐浓度评估:健康风险和污染评价

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2023.3302

Thaer Zaid Ibrahim Al-Sallal, Abdulazeez Y.T. Al-Saffawi

引用次数: 0

Effect of environmental factors on β-carotene production in green algae – A review 环境因素对绿藻生产β-胡萝卜素的影响

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2023.3301

Ansam Saad Al-Khafaji, Ibtehal Aqeel Al-Tae

{"title":"Effect of environmental factors on β-carotene production in green algae – A review","authors":"Ansam Saad Al-Khafaji, Ibtehal Aqeel Al-Tae","doi":"10.47587/cesa.2023.3301","DOIUrl":"https://doi.org/10.47587/cesa.2023.3301","url":null,"abstract":"Microalgae are microscopic autotrophic organisms that are typically seen in freshwater and ocean water. ecosystem and they are considered among the fastest organisms because they have a very fast life cycle Growth on Earth, as they use all available materials for growth, and they contain many effective compounds of biological, pharmacological and environmental importance. Algae contain carotenoids, which are granules that give a yellow-orange color and are found within the plastid. Carotenoids generated from microalgae are a class of accessory pigments that have the capacity to absorb light and are crucial for metabolic processes. A very small number of microalgae have been employed for the commercial production of carotenoids, although around a thousand carotenoids have been reported to date. Beta-carotene is one of the most important types of natural carotenoids synthesized by plants, and algae. In recent years, interest in it has increased greatly, and the reason for this is due to the large number of evidence indicating its benefits and importance to human health. The carotenoids of microalgae origin were briefly examined in this review. In addition, determining the effect of Salinity, light intensity, nutrients, and pH on the production and quantity of beta-carotene in some species of Green algae (Chlorophyta).","PeriodicalId":331170,"journal":{"name":"Chemical and Environmental Science Archives","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133572229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Pressure sensitive adhesives in transdermal drug delivery system 经皮给药系统用压敏胶

Chemical and Environmental Science Archives Pub Date : 1900-01-01 DOI: 10.47587/cesa.2022.2301

O. Patil, Swarupa N. Shirke, A. Manjappa, P. Kumbhar, J. Disouza

{"title":"Pressure sensitive adhesives in transdermal drug delivery system","authors":"O. Patil, Swarupa N. Shirke, A. Manjappa, P. Kumbhar, J. Disouza","doi":"10.47587/cesa.2022.2301","DOIUrl":"https://doi.org/10.47587/cesa.2022.2301","url":null,"abstract":"Transdermal drug delivery systems (TDDS) are used to transfer medicines into the systemic circulation through the skin. (Trans)dermal patches are well-known pharmacological formulations that are applied to the skin’s surface for a variety of reasons, ranging from treating cutaneous diseases to achieving a systemic impact. Transdermal drug delivery (TDD) devices rely heavily on adhesives. In addition to the normal functional adhesive qualities, adhesives for TDD applications must be biocompatible with the skin, chemically compatible with the medication, and enable consistent, efficient drug administration. One of the most important components of a TDDS is the pressure-sensitive adhesive (PSA). PSA’s primary role is to aid patch adherence to the skin, but it also serves as a matrix for the medication and other excipients. As a result, PSA impacts other important quality aspects of the TDDS, such as drug distribution, flux through skin, and physical and chemical stability of the completed product, in addition to patch adherence. This article addresses transdermal drug delivery systems, their benefits and drawbacks, and their uses in pharmaceuticals, as well as providing detailed information on pressure sensitive adhesives.","PeriodicalId":331170,"journal":{"name":"Chemical and Environmental Science Archives","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132498759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0