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Journal articles on the topic 'Qat Extracts'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Mokhtar Ali Amrani, Mohammed Bagash, and F. Yehya. "An Efficient Green Synthesis Method for the Synthesis of Silver Nanoparticles Using the Extraction of Catha Edulis Leaves." Albaydha University Journal 1, no. 2 (2020): 214–23. http://dx.doi.org/10.56807/buj.v1i2.24.

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The synthesis of nanoparticles using plant extracts has received great attentions during the last two decades. That is plausibly due to its simple, rapid, toxic-free, and efficient reactions. In this study, a unique green method for preparing silver nanoparticles (Ag NPs) using the extract of Qat (or Khat) leaves is reported. The method is cheap, easy and has a potential for mass production of nanoparticles. Qat is a fast growing plant used mostly as stimulant in Yemen and South African countries and contains dozens of phytochemicals in its leaves. These chemicals are extracted from Qat leaves

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Ngeny, Lilian C., Lucia K. Keter, Beatrice N. Irungu, et al. "In vitro Cytotoxic Activities of Catha edulis (Vahl) Forssk. Ex Endl. (Khat) Varieties from Kenya on Select Cancer Cell Lines." EAS Journal of Pharmacy and Pharmacology 5, no. 1 (2023): 8–13. http://dx.doi.org/10.36349/easjpp.2023.v05i01.002.

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Khat (Catha edulis (Vahl) Forssk.) is a herb from the Celastraceae family (also known as qat, gaad, or miraa). The leaves and stems are used medicinally and for recreational purposes. The communities that grow khat have identified different varieties based on perceived appearance and quality. This study aimed to evaluate the cytotoxicity of khat varieties grown in the Meru and Embu Counties of Kenya. Field studies were undertaken in the markets and farms in Meru and Embu Counties of Kenya to document and purchase local khat varieties. Dried khat was extracted with a 1:1 v/v MeOH: CH2Cl2 solven

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Shariff, Mansoor, Mohammed M. Al-Moaleem, and Nasser M. Al-Ahmari. "A Multidisciplinary Approach in the Treatment of Tempromandibular Joint Pain Associated with Qat Chewing." Case Reports in Dentistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/139419.

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Pain of the tempro-mandibular joint (TMJ) has a direct bearing to missing teeth and excessive physical activity. Consumption of qat requires chewing on the leaves to extract their juice for long hours. A 65-year-old male Yemeni patient, a Qat chewer, reported to the university dental hospital at King Khalid University complaining of pain in left temporomandibular joint with missing mandibular anterior teeth. A multidisciplinary approach for the overall treatment of the patient was decided. Initial treatment was the relief of patient’s pain with the help of a night guard. This was followed by a

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Potter, K. A., and R. W. Leid. "Isolation and partial characterization of an eosinophil chemotactic factor from metacestodes of Taenia taeniaeformis (ECF-Tt)." Journal of Immunology 136, no. 5 (1986): 1712–17. http://dx.doi.org/10.4049/jimmunol.136.5.1712.

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Abstract Eosinophil chemotactic activity associated with protein extracts of Taenia taeniaeformis metacestodes was investigated. Chemotactic activity was associated with the nonbound protein after QAE cellulose chromatography of a 3 M KCl extract of homogenized larvae. When this material was precipitated with ammonium sulfate, activity was present in the 40 to 80% precipitate. Upon rechromatography on QAE cellulose equilibrated in a low ionic strength buffer, eosinophil chemotactic activity was retained by the gel and eluted after application of the NaCl gradient. Gel filtration of Sephacryl S

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Kim, Yuwan, Si Won Kim, Hyoung Jae Lee, Kye-Han Lee, Jeong-Yong Cho, and Jae-Hak Moon. "Selection of Material with Excellent Antioxidant Activity from Plants of Warm Temperate Forests in Korea." Korean Tea Society 29, no. 2 (2023): 63–71. http://dx.doi.org/10.29225/jkts.2023.29.2.63.

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This study was performed to select an excellent antioxidant active material for 10 species of the family Fegaceae, a family of plants in warm temperate forests in Korea. The total phenolic and flavonoid contents, scavenging activities of DPPH, ABTS+ , and hydroxyl radicals, and reducing power of each hot water extract were examined. The Quercus acuta leaf (QA) extract (QAE) showed the highest activity in all tests. In addition, among the hot water, 30%, 50%, 70% EtOH, and EtOH QAE, the hot water extract was the most excellent in extraction yield, total phenolic content, and DPPH radical-scaven

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PIACENZA, L., R. RADI, F. GOÑI, and C. CARMONA. "CuZn superoxide dismutase activities from Fasciola hepatica." Parasitology 117, no. 6 (1998): 555–62. http://dx.doi.org/10.1017/s0031182098003394.

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The levels of superoxide dismutase (SOD) were determined in detergent-soluble, somatic and excretion–secretion (E–S) preparations from adult Fasciola hepatica using the xanthine oxidase system and visualized in substrate gels. Compared to detergent-soluble and somatic extracts, E–S products showed the highest SOD activity (88 ·5 U/mg), indicating active release to the medium in which parasites were maintained. SOD specific activity was also detected at high levels in E–S products from 3-week-old and 5-week-old immature migrating flukes (25 and 143 U/mg, respectively). In all preparations excep

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Keddy, Grace Gakii, Patrick Gachoki Kareru, Sammy Indire Wanakai, Mercy Wanjuki Karenju, George Kiprono Kisoi, and Peter Lemei Njenga. "Antioxidant and Antimicrobial Activity of Psidium guajava (Pomifera and Pyrifera) Aqueous Leaf Extract Varieties’." Advances in Research 24, no. 5 (2023): 124–37. http://dx.doi.org/10.9734/air/2023/v24i5964.

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Aims: Psidium guajava (Pomifera (red) and Pyrifera (white)) is commonly used in traditional medicine to treat gastrointestinal disorders. In this study, the antioxidant and antimicrobial activity of methanol extracts of P. guajava (Pomifera (Red) and Pyrifera (White) leave varieties were investigated. Methodology: The total phenolic (TPC) and flavonoid (TFC) contents and antioxidant capacities in terms of 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging, were determined, and the correlations among the results were assessed. The antimicrobial activity was assessed through agar disc diffusi

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Mohammed, Ali Hussein, Nasser Salh Lhwak, and Ahmed Abdulhadi Jabbar. "Extraction and identification of certain bioactive compounds with antibacterial activity from the green algae Cladophora glomerate." Medicra (Journal of Medical Laboratory Science/Technology) 7, no. 1 (2024): 19–23. http://dx.doi.org/10.21070/medicra.v7i1.1742.

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Cladophora glomerata algae extract was used to inhibit the growth of five bacterial species: Escherichia coli, Staphylococcus aureus, Proteus mirabilis, Citrobacter, and Klebsiella pneumoniae. Algae samples were collected from the river Euphrates in Al-Fadhiliya/Thi-Qar governorate and extracted into alcohol. The concentrations of the extracts were compared with five antibiotics. The 200% concentration showed the highest effectiveness against bacteria, with an inhibition zone of 28mm. The antibiotics Imipenem and Meropenem had an inhibition zone of 28mm, while Amikacin, Norfloxacin, and Pipera

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Mohd Yazid, Noor Shafifiyaz, Najihah Mohd Hashim, Hapipah Mohd Ali, and Rusea Go. "Phytochemical Profile, Antioxidant and Anti Proliferative Studies in Different Extracts of Artocarpus kemando Miq. Bark." Sains Malaysiana 50, no. 4 (2021): 967–87. http://dx.doi.org/10.17576/jsm-2021-5004-08.

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In this study, the stem bark of Artocarpus kemando was used to find alternative antioxidants from natural sources with fewer side effects. A. kemando wasextracted successively using hexane, chloroform and methanol solvents, and evaluated for antioxidant, cytotoxic, and antiproliferative activities. The extracts were investigated for determination of their total phenolic content (TPC) and total flavonoid content (TFC). Then, the antioxidant activities were evaluated using chemical based assays such as ferric reducing antioxidant power (FRAP), total antioxidant capacity, radical scavenging of 2,

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Ahlam Husain Farhoud Khalawi. "Study to detect cytotoxicity of The eggplant plant ( Solanum melongena L)." University of Thi-Qar Journal of agricultural research 11, no. 2 (2022): 36–44. http://dx.doi.org/10.54174/utjagr.v11i2.179.

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The current study included the cytotoxicity test of the active compounds isolated from the peels of the fruits of the eggplant plant, which is found in the local markets of Dhi Qar governorate and used for food and grown within the governorate and not imported during the period (July, August, September, October, November, December. January), the trend of human red blood cells for the purpose of determining the possibility of using them as drug alternatives in the future. The peels of the eggplant plant were extracted with hexane once, then the alkaloid extract was prepared from it again.

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Park, Ji Eun, Heaji Lee, Hyunkyung Rho, Seong Min Hong, Sun Yeou Kim, and Yunsook Lim. "Effect of Quamoclit angulata Extract Supplementation on Oxidative Stress and Inflammation on Hyperglycemia-Induced Renal Damage in Type 2 Diabetic Mice." Antioxidants 9, no. 6 (2020): 459. http://dx.doi.org/10.3390/antiox9060459.

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Type 2 diabetes mellitus (T2DM) is caused by abnormalities of controlling blood glucose and insulin homeostasis. Especially, hyperglycemia causes hyper-inflammation through activation of NLRP3 inflammasome, which can lead to cell apoptosis, hypertrophy, and fibrosis. Quamoclit angulata (QA), one of the annual winders, has been shown ameliorative effects on diabetes. The current study investigated whether the QA extract (QAE) attenuated hyperglycemia-induced renal inflammation related to NLRP inflammasome and oxidative stress in high fat diet (HFD)-induced diabetic mice. After T2DM was induced,

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Al-Sa'idy, Hussein Ali Hussein, and Hussein Kamil Hamid. "Investigations on Kaempferol, Quercetin and Other Flavonoids in Aquatic Plants of Iraqi Marshlands-I." Asian Journal of Pharmaceutical Research and Development 11, no. 1 (2023): 22–38. http://dx.doi.org/10.22270/ajprd.v11i1.1226.

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Aquatic plants are versatile source of phytochemicals that are of significant biological influences particularly, the flavonoids and their glycosidic derivatives distributed in different plant parts including fruits, seeds, leaves, flowers, stem, roots and rhizomes. Most of the reported biological influences are reported to be expressed by quercetin, kaempferol, isorhmnatin, and their glycosidic derivatives, particularly, rutin. In this survey, we summarized the reported flavonoids types, content and factors affecting their extracts contents of three aquatic plants Nuphar, Najas and Nymphoides

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Ji, Binbin, and Luqi Xu. "Enhancing Aircraft Fuel Prediction with LSTM-Attention: Examining Lag Effects Across the Entire Flight." Journal of Physics: Conference Series 2805, no. 1 (2024): 012014. http://dx.doi.org/10.1088/1742-6596/2805/1/012014.

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Abstract This research is centered on achieving full-flight fuel consumption fitting using a single model, with a specific focus on emphasizing the potential lag effects in aircraft fuel consumption. The proposed LSTM-Attention model integrates the capabilities of the LSTM network to effectively extract correlation features and sequence features from the data. Simultaneously, the attention mechanism assumes a crucial role in accentuating temporal dependencies and lag effects associated with fuel consumption in distinct flight segments. The parameters of the model undergo meticulous optimizatio

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Gonzàlez-Solís, Sergi, and Pere Masjuan. "Phenomenological applications of rational approximants." Modern Physics Letters A 31, no. 29 (2016): 1630028. http://dx.doi.org/10.1142/s0217732316300287.

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We illustrate the powerfulness of Padé approximants (PAs) as a summation method and explore one of their extensions, the so-called quadratic approximant (QAs), to access both space- and (low-energy) time-like (TL) regions. As an introductory and pedagogical exercise, the function [Formula: see text] is approximated by both kind of approximants. Then, PAs are applied to predict pseudoscalar meson Dalitz decays and to extract [Formula: see text] from the semileptonic [Formula: see text] decays. Finally, the [Formula: see text] vector form factor in the TL region is explored using QAs.

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15

Li, Xiuyi, Lin Zhang, Jiaxing Shang, Xiaoquan Li, Yu Qian, and Linjiang Zheng. "A Runway Overrun Risk Assessment Model for Civil Aircraft Based on Quick Access Recorder Data." Applied Sciences 13, no. 17 (2023): 9828. http://dx.doi.org/10.3390/app13179828.

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The quick access recorder (QAR), as an airborne device used to monitor and record flight parameters, has been widely installed on various types of aircraft. Based on QAR data, research on runway overrun, a typical flight safety incident, has attracted widespread attention in recent years. However, existing runway overrun risk models generally suffer from oversimplified risk metrics or insufficient consideration of risk dynamics. In this paper, we propose a new dynamic runway overrun risk assessment model based on QAR data. We first consider the noise of aircraft trajectory data in the QAR para

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Hikmah, Exma Mu'tatal, Paulus Liben, and Widjiati Widjiati. "Apium graveolens Prevents Intrauterine Growth Restriction via Suppression of Antiangiogenic Factor Production." Majalah Obat Tradisional 23, no. 2 (2018): 135. http://dx.doi.org/10.22146/mot.36112.

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Preeclampsia is the worldwide leading cause of fetomaternal morbidity and mortality which involves the placental dysfunction. A poor placentation and formed of non-dilated spiral artery caused utero-placental circulation insufficiency, resulted in inadequate supply of nutrients and oxygen to support normal aerobic growth of the fetus. Apium graveolens or celery has been widely known as antioxidant, antiinflammation and antihypertensive with flavonoid-apigenin as main active compound. Apigenin can inhibit TNF-α, HIF-1α and nitric oxide blocking as major pathophysiological pathway of preeclampsi

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Kim, Jae Kwang, Hye Jin Yang та Younghoon Go. "Quercus acuta Thunb. Suppresses LPS-Induced Neuroinflammation in BV2 Microglial Cells via Regulating MAPK/NF-κB and Nrf2/HO-1 Pathway". Antioxidants 11, № 10 (2022): 1851. http://dx.doi.org/10.3390/antiox11101851.

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Microglial activation-mediated neuroinflammation is associated with the pathogenesis of neurodegenerative disorders. Therefore, the management of microglial cell activation and their inflammatory response is an important therapeutic approach for preventing neurodegenerative diseases. Quercus acuta Thunb. (QA) (Fagaceae) is a tree found in Korea, China, and Japan. The current study investigated the anti-neuroinflammatory effects of QA and its mechanism of action in lipopolysaccharide (LPS)-stimulated BV2 microglial cells. Pretreatment with a methanol extract of dried QA stems (QAE) inhibited th

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Gumaih, Hussein, Tawfik AL-Busaili, and Mona Al-Kabzari. "Effects of Qat Water Extract Combined with Sublethal Dose of Cypermethrin on Fetuses Body Weight and Length of Pregnant Mice." Journal of the Advances in Agricultural Researches 24, no. 3 (2019): 370–81. http://dx.doi.org/10.21608/jalexu.2019.163468.

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Al-Barakat, Hanoon N. Kadhem, Razzaq ghazi Neghamish, and Qassim A. T. Al-Shujairy. "The Effect of Some Chemical Compounds and Plants Water Extracts on Inhibiting The Nitrification in The Soil and Wheat (Triticum Aestivuim L.) Growth and Yield." IOP Conference Series: Earth and Environmental Science 923, no. 1 (2021): 012077. http://dx.doi.org/10.1088/1755-1315/923/1/012077.

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Abstract A field experiment was carried out in Dhi Qar Governorate, Al-Fadhliya region, for season of 2018-2019. Chemical compounds DMPP, DCD, and ATS as well as aqueous extracts of capers seeds and palm bast, were added to inhibiting the nitrification in the soil, and some of the growth characteristics of the wheat. Three of nitrogen level were added as urea (46% N) fertilizer (100, 150 and 200 kg N per ha). Aqueous extracts of plants were added to the urea fertilizer at a concentration of 100 ml for each kg of fertilizer. The experiment designed used RCBD with three replications. Wheat seeds

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YANG, HUA, PATRICIA A. KENDALL, LYDIA C. MEDEIROS, and JOHN N. SOFOS. "Efficacy of Sanitizing Agents against Listeria monocytogenes Biofilms on High-Density Polyethylene Cutting Board Surfaces." Journal of Food Protection 72, no. 5 (2009): 990–98. http://dx.doi.org/10.4315/0362-028x-72.5.990.

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This study compared the effectiveness of 10 commercially available sanitizers against Listeria monocytogenes biofilms on high-density polyethylene cutting boards. Smooth and rough surface high-density polyethylene coupons (2 by 5 cm) were inoculated (approximately 6 log CFU/cm2) with a five-strain composite of L. monocytogenes in ham homogenate and incubated at 24°C and ≥90% relative humidity for up to 21 days. The coupons were subjected to repeated 24-h cycles simulating use and cleaning in the home. Each day, 0.3 ml of a 10-fold-diluted tryptic soy broth containing 0.6% yeast extract was add

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Zhang, Shiwen, Zhimei Huo, Yanjin Sun, Fujuan Li, and Bo Jia. "Pilot Maneuvering Performance Analysis and Evaluation with Deep Learning." International Journal of Aerospace Engineering 2023 (March 15, 2023): 1–16. http://dx.doi.org/10.1155/2023/6452129.

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Quick access recorder (QAR) data have been used to evaluate pilot performance for decades. However, traditional evaluation methods suffer from the inability to consider multiple parameters simultaneously, and most of them need to select features manually in advance. To study the relationship between QAR data and pilot performance, this paper puts forward one-dimensional convolutional neural networks (1-D CNN) which consider QAR metrics in an integrated manner. This paper obtained indicators describing the operational status of an aircraft first. Then, the correlation between indicators and pil

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Balicka, Honorata, and Jerzy Balicki. "QUANTUM ARTIFICIAL INTELLIGENCE IN MANAGEMENT OF SELECTED BUSINESS PROCESSES." Scientific Papers of Silesian University of Technology Organization and Management Series 2024, no. 208 (2024): 9–26. https://doi.org/10.29119/1641-3466.2024.208.1.

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Purpose: The aim of the article is to present potential applications of Quantum Artificial Intelligence (QAI) in enhancing Business Process Management (BPM), with a particular focus on predictive analytics. Design/methodology/approach: The primary research methods include a critical analysis of the literature. Deep neural network testing was also conducted to identify efficient predictors and detectors for BPM systems. In addition, intensive computational experiments were carried out to analyze the quality of solutions defined by the proposed quantum-inspired algorithms. Findings: The results

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Madelou, Nikoleta Anna, Eleni Melliou, and Prokopios Magiatis. "Quantitation of Lupinus spp. Quinolizidine Alkaloids by qNMR and Accelerated Debittering with a Resin-Based Protocol." Molecules 29, no. 3 (2024): 582. http://dx.doi.org/10.3390/molecules29030582.

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Quinolizidine alkaloids (QAs) are toxic secondary metabolites of the Lupinus species, the presence of which limits the expansion of lupin beans consumption, despite their high protein content. Evaluation of the level of alkaloids in edible Lupinus species is crucial from a food safety point of view. However, quantitation of QAs is complicated by the fact that not all important alkaloids used for quantitation are commercially available. In this context, we developed a method for the simultaneous quantitation of eight major lupin alkaloids using quantitative NMR spectroscopy (qNMR). Quantitation

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Maammar, Nejwa El, Seddik Bri, and Jaouad Foshi. "Performances Concatenated LDPC based STBC-OFDM System and MRC Receivers." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 1 (2018): 622. http://dx.doi.org/10.11591/ijece.v8i1.pp622-630.

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This paper presents the bit error rate performance of the low density parity check (LDPC) with the concatenation of convolutional channel coding based orthogonal frequency-division-multiplexing (OFDM) using space time block coded (STBC). The OFDM wireless communication system incorporates 3/4-rated convolutional encoder under various digital modulations (BPSK, QPSK and QAM) over an additative white gaussian noise (AWGN) and fading (Raleigh and Rician) channels. At the receiving section of the simulated system, Maximum Ratio combining (MRC) channel equalization technique has been implemented to

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Nejwa, El Maammar, Bri Seddik, and Foshi Jaouad. "Performances Concatenated LDPC based STBC-OFDM System and MRC Receivers." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 1 (2018): 622–30. https://doi.org/10.11591/ijece.v8i1.pp622-630.

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This paper presents the bit error rate performance of the low density parity check (LDPC) with the concatenation of convolutional channel coding based orthogonal frequency-division-multiplexing (OFDM) using space time block coded (STBC). The OFDM wireless communication system incorporates 3/4-rated convolutional encoder under various digital modulations (BPSK, QPSK and QAM) over an additative white gaussian noise (AWGN) and fading (Raleigh and Rician) channels. At the receiving section of the simulated system, Maximum Ratio combining (MRC) channel equalization technique has been implemented to

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Wang, Mengtao, Youchen Fan, Shengliang Fang, Tianshu Cui, and Donghang Cheng. "A Joint Automatic Modulation Classification Scheme in Spatial Cognitive Communication." Sensors 22, no. 17 (2022): 6500. http://dx.doi.org/10.3390/s22176500.

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Automatic modulation discrimination (AMC) is one of the critical technologies in spatial cognitive communication systems. Building a high-performance AMC model in intelligent receivers can help to realize adaptive signal synchronization and demodulation. However, tackling the intra-class diversity problem is challenging to AMC based on deep learning (DL), as 16QAM and 64QAM are not easily distinguished by DL networks. In order to overcome the problem, this paper proposes a joint AMC model that combines DL and expert features. In this model, the former builds a neural network that can extract t

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Wang, Qiangchang, and Guodong Guo. "CQA-Face: Contrastive Quality-Aware Attentions for Face Recognition." Proceedings of the AAAI Conference on Artificial Intelligence 36, no. 3 (2022): 2504–12. http://dx.doi.org/10.1609/aaai.v36i3.20151.

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Few existing face recognition (FR) models take local representations into account. Although some works achieved this by extracting features on cropped parts around face landmarks, landmark detection may be inaccurate or even fail in some extreme cases. Recently, without relying on landmarks, attention-based networks can focus on useful parts automatically. However, there are two issues: 1) It is noticed that these approaches focus on few facial parts, while missing other potentially discriminative regions. This can cause performance drops when emphasized facial parts are invisible under heavy

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Hadi, Iman, and Haneen A. Alshadood. "Effective Antifungal Compounds of Lactococcus lactic Against Vulvovaginal Candidiasis for Women in Thi-Qar Governorate." University of Thi-Qar Journal of Science 11, no. 2 (2024): 88–92. https://doi.org/10.32792/utq/utjsci/v11i2.1175.

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Abstract One hundred and fifty-four samples were collected from Bint Al-Huda Teaching Hospital in Thi-Qar Governorate divided to 104 women infected urinary tract infection (UTI) and 50 healthy women as control group. Vulvovaginal Candidiasis (VVC) is the most opportunistic yeast infection produced by species of Candida in both pregnant and non-pregnant women were examined in this study. Lactococcus lactic (ATCC 11454) extracted and chemical compounds identified by Gas Chromatography, the extract of L. lactic inhibited all Candida isolates in agar well diffusion assay and the inhibition zone, i

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Khodadadi, Sedighe, Nafiseh Mahdinezhad, Bahman Fazeli-Nasab, Mohammad Javad Heidari, Baratali Fakheri, and Abdolhossein Miri. "Investigating the Possibility of Green Synthesis of Silver Nanoparticles Using Vaccinium arctostaphlyos Extract and Evaluating Its Antibacterial Properties." BioMed Research International 2021 (May 3, 2021): 1–13. http://dx.doi.org/10.1155/2021/5572252.

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Objective. Vaccinium genus plants have medicinal value, of which Vaccinium arctostaphylos (Caucasian whortleberry or Qare-Qat in the local language) is the only available species in Iran. Public tendency to use herbal remedies and natural products such as synthesized nanoparticles is increasing due to the proof of the destructive side effects of chemical drugs. Nanosilver products have been effective against more than 650 microbe types. This study was aimed at assessing the possibility of green synthesis of silver nanoparticles using Vaccinium arctostaphylos aqueous extract and at evaluating i

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Liu, Juge, Xiyu Yao, Dawei Yun, Man Zhang, Chunlu Qian, and Jun Liu. "Development of active packaging films based on quaternary ammonium chitosan, polyvinyl alcohol and litchi (Litchi chinensis Sonn.) pericarp extract." Quality Assurance and Safety of Crops & Foods 13, SP2 (2021): 9–19. http://dx.doi.org/10.15586/qas.v13isp2.945.

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Litchi (Litchi chinensis Sonn.) pericarp contains abundant polyphenols that are suitable materials for developing active packaging films. In this study, 1 wt%, 3 wt% and 5 wt% of litchi pericarp extract (LPE) was added into quaternary ammonium chitosan (QAC) and polyvinyl alcohol (PVA) matrix to develop active packaging films. The structural, physical and functional properties of QAC-PVA (QP) films were compared with LPE (QP-LPE films) and without LPE (QP films). Results showed QP film had a heterogenous cross-section whereas QP-LPE films displayed rough and uneven cross-sections. After adding

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Bhatt, Lok Ranjan, Prabin Dawadi, Manita Shyaula, Christina Khadka, and Jay Kant Raut. "Phytochemical analysis of Schizophyllum commune Fr. and Microporus xanthopus (Fr.) Kuntze from Phulchowki, central Nepal." Scientific World 16, no. 16 (2023): 100–105. http://dx.doi.org/10.3126/sw.v16i16.56867.

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Mushrooms are widely known for their therapeutic properties, which can be attributed to the secondary metabolites they produce. This study aims to evaluate different phytochemical constituents of two saprophytic mushrooms, namely Schizophyllum commune Fr and Microporus xanthopus (Fr.) Kuntze, collected from forest around Phulchowki, Lalitpur, Nepal. The total phenolic, flavonoid, vitamin C, β-carotene, and lycopene contents of S. commune were found higher than M. xanthopus (143.21 ± 0.003 vs. 108.45 ± 0.112 mg GAE/100 g; 91.55 ± 0.121 vs. 49.72 ± 0.073 mg QAE/100 g; 26.67 ± 0.015 vs. 3.15 ± 0.

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Talha, Muhammad, Mubashar Sarfraz, Atta Rahman, et al. "Voting-Based Deep Convolutional Neural Networks (VB-DCNNs) for M-QAM and M-PSK Signals Classification." Electronics 12, no. 8 (2023): 1913. http://dx.doi.org/10.3390/electronics12081913.

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Automatic modulation classification (AMC) using convolutional neural networks (CNNs) is an active area of research that has the potential to improve the efficiency and reliability of wireless communication systems significantly. AMC is the approach used in a communication system to detect the type of modulation format at the receiver end. This paper proposes a voting-based deep convolutional neural network (VB-DCNN) for classifying M-QAM and M-PSK signals. M-QAM and M-PSK signal waveforms are generated and passed through the fading channel in the presence of additive white Gaussian noise (AWGN

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Iping, Supriana Ayu Purwarianti Wiwin Suwarningsih*. "ESTIMATION QUESTION TYPE ANALYZER FOR MULTI CLOSE DOMAIN INDONESIAN QAS." INTERNATIONAL JOURNAL OF RESEARCH SCIENCE & MANAGEMENT 4, no. 6 (2017): 59–66. https://doi.org/10.5281/zenodo.583975.

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We propose an automated estimation scheme to analyze question classification in Indonesian multi closed domain question answering systems. The goal is to provide a good questioning classification system even if using only available language sources. Our strategy here is to build a pattern and rule to extract some important words and utilize the results as a feature for classification estimation of automated learning-based questions. Scenarios designed in automated learning estimates: (i) Analyzing questions, to represent the key information needed to answer user questions using target focus an

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Omekudo, Oviemuno, Emmanuel Ikpefan, and Felix Enwa. "Antimicrobial and antioxidant studies of the methanolic extract of Cnestis ferruginea DC (connaraceae) leaves." Journal of Current Biomedical Research 2, no. 6, November-December (2022): 683–96. http://dx.doi.org/10.54117/jcbr.v2i6.9.

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Extract from Cnestis ferruginea leaves has been used worldwide due to its antimicrobial and antioxidant activities in treating related ailments. The aim of this study is to investigate the antimicrobial and antioxidant studies of the extract of Cnestis ferruginea DC (Connaraceae) leaves. The methanol extract was evaluated for the presence of phytochemicals. The methanol extract was evaluated for antimicrobial activities against Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Candida albicans, and Aspergillus spp. Thereafter, antioxidant activities were also

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Mardanova, Zilola Fatxullo qizi. "THE MOST EFFECTIVE STRATEGIES IN TEACHING READING. QUESTION ANSWER RELATIONSHIP (QAR) STRATEGY." ILM-FAN VA INNOVATSIYA ILMIY-AMALIY KONFERENSIYASI 2, no. 05 (2023): 91–94. https://doi.org/10.5281/zenodo.7908586.

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Reading, along with listening, writing, and speaking, is one of the skills involved in language learning. People who use the term now understand that reading is a language ability that should be taught in conjunction with all other language abilities, such as talking, listening, writing, and thinking (Gillet & Temple, 1994). Reading is a process in which readers actively seek to understand what they read. It is a complex process and necessary skill that is used to extract meaning and information from a text in order to gain knowledge, which is related to other skills in the process.  

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Al-Ghalibi, Maitham K. A., and Israa Abdullah Saleh. "Studying the Effect of Adding Different Percentages of Clove Extract on the Sensory and Bacterial Characteristics of Cold-Stored Buffalo Meat." IOP Conference Series: Earth and Environmental Science 1487, no. 1 (2025): 012140. https://doi.org/10.1088/1755-1315/1487/1/012140.

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Abstract This study was conducted at Dhi Qar University / College of Agriculture and Marshlands-Laboratories of the Animal Production Department for the period from 11/25/2023 until 12/25/2023, in which the alcoholic clove extract was extracted and added in different proportions to Perker tablets of buffalo meat preserved by refrigeration at a temperature of 4 m and to know the extent of its effect on the qualitative characteristics of the perker. Meat samples were obtained from local markets and the experimental treatments were divided into four groups. The first treatment (T1) was free of th

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Əliyeva, G. S., C. T. Əliyeva, and A. T. Bədəlova. "DİABETİK ANGİOPATİYALARIN ULTRASƏS DOPLEROQRAFİYASI İLƏ QİYMƏTLƏNDİRİLMƏSİ." Azerbaijan Medical Journal, no. 1 (March 19, 2025): 150–54. https://doi.org/10.34921/amj.2025.1.026.

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Məqalədə şəkərli diabet zamanı diabetik pəncə sindromunun erkən diaqnostikasında ultrasəs doplerqrafiyasının əhəmiyyəti haqqında məlumat verilir. Tədqiqata 15 nəfəri kişi, 20 nəfəri qadın olmaqla 35 nəfər diabetik angiopatiyalı xəstə cəlb edilmişdir. Xəstələr şəkərli diabetin tipinə (insulindən asılı olan və insulindən asılı olmayan) və davametmə müddətinə (1 il və daha az, 1-5 il, 6-10 il, 10 ildən çox) əsasən qruplaşdırılmışdır. Bu qruplar üzrə qan dövranı pozulmalarının mərhələləri müşahidə edilmişdir. Tədqiqatın nəticələrinə görə, qan dövranının pozulması mərhələlər üzrə irəlilədikcə əlamə

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Hussain Alwan Mana. "Effect of triple superphosphate fertilizer and spraying with licorice root extract In the growth and production of tomato Lycopersicon esculentum Mill." University of Thi-Qar Journal of agricultural research 13, no. 1 (2024): 290–303. http://dx.doi.org/10.54174/06gv9d39.

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executed Experience during season Agricultural2022-2023 conducted in One HousesPlastic in Al-Fadliyah district, which is located to the south of Dhi Qar Governorate,13 kilometers from the center of the city of Nasiriyah , on plantsTomatoLycopersicom esculentum mill .Classify ,WijdanWith a purpose study impactimpact Fertilizer Super phosphate Triple In concentrations,1.5, 0) 2,5)gm.plant-1 fSpraying With extract Root Sweat licorice (in concentrations)0 , 5 , 10)gm.l-1 on thegrowth The vegetative And syphilis To plant Planted tomatoes inside HousesPlastic.At a fertilization rate of seven Payment

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Israa Abdullah Saleh. "Study of the effect of adding different proportions of clove extract on some chemical and physical properties of cold-stored buffalo meat burgers." University of Thi-Qar Journal of agricultural research 13, no. 2 (2024): 67–74. https://doi.org/10.54174/vwybwa77.

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This study was conducted at Dhi Qar University / College of Agriculture and Marshlands - Laboratories of the Animal Production Department for the period from 11/25/2023 to 12/25/2023, in which the alcoholic clove extract was extracted and added in different proportions to Burgers tablets of buffalo meat preserved by refrigeration at a temperature of 4°C. To find out the extent of its effect on the qualitative characteristics of the burger, meat samples were obtained from local markets and the experimental treatments were divided into four groups. The first treatment (T1) was free of the additi

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Khalaf, Z. S., and M. S. Abdul-Wahid. "Study Investigates the Impact of Applying Chelated Iron and Dry Yeast Extract Through Foliar Spraying on Some Characteristics of the Anatomical Structure of Pomegranate Roots Slimmi Variety (Punica granatum L.)." IOP Conference Series: Earth and Environmental Science 1449, no. 1 (2025): 012131. https://doi.org/10.1088/1755-1315/1449/1/012131.

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Abstract A private orchard in Dhi Qar Governorate was investigated during the 2023 growing season. The study examined Salimi pomegranate trees. Twenty-seven Slimmi variety pomegranate trees of uniform size and growth were used to study the effects of spraying with chelated iron and dry yeast extract and their interaction on their anatomical characteristics. Twofactor, completely randomized blocks were used in the experiment. Chelated iron was sprayed at three concentrations (0, 250, 500) mg L-1, and dried yeast extract was sprayed at three concentrations (0, 5, 10) g L-1 in three duplicates. T

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Abdel-Moneim, Mohamed A., Mohamed K. M. Gerwash, El-Sayed M. El-Rabaie, Fathi E. Abd El-Samie, Khalil F. Ramadan, and Nariman Abdel-Salam. "Improved Modulation Classification Based on Hough Transforms of Constellation Diagrams Using CNN for the UWA-OFDM Communication System." Eng 6, no. 6 (2025): 127. https://doi.org/10.3390/eng6060127.

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The Automatic Modulation Classification (AMC) for underwater acoustic signals enables more efficient utilization of the acoustic spectrum. Deep learning techniques significantly improve classification performance. Hence, they can be applied in AMC work to improve the underwater acoustic (UWA) communication. This paper is based on the adoption of Hough Transform (HT) and Edge Detection (ED) to enhance modulation classification, especially for a small dataset. Deep neural models based on basic Convolutional Neural Network (CNN), Visual Geometry Group-16 (VGG-16), and VGG-19 trained on constellat

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Walenczykowska, M., and A. Kawalec. "Type of modulation identification using Wavelet Transform and Neural Network." Bulletin of the Polish Academy of Sciences Technical Sciences 64, no. 1 (2016): 257–61. http://dx.doi.org/10.1515/bpasts-2016-0028.

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Abstract Automatic recognition of the signal modulation type turned out to be useful in many areas, including electronic warfare or surveillance. The wavelet transform is an effective way to extract signal features for identification purposes. In this paper there are M-ary ASK, M-ary PSK, M-ary FSK, M-ary QAM, OOK and MSK signals analysed. The mean value, variance and central moments up to five of continuous wavelet transform (CWT) are used as signal features. The principal component analysis (PCA) is applied to reduce a number of features. A multi-layer neural network trained with backpropaga

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Guergouri, Fatima Zohra, Widad Sobhi, and Mustapha Benboubetra. "Antioxidant activity of Algerian Nigella sativa total oil and its unsaponifiable fraction." Journal of Phytopharmacology 6, no. 4 (2017): 234–38. http://dx.doi.org/10.31254/phyto.2017.6406.

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Background/Aim: Nigella sativa(NS) oil is usually considered as oxidatively stable, the aim of this study is to evaluate its antioxidant capacity in vitro and that of its unsaponifiable fraction by several mechanisms. Methods: NS seed total oil (TO) was extracted with n-hexane and this oil was further the matrix to extract the unsaponifiable fraction (UF). TO and its UF were investigated for the antioxidant activity using the following spectrophotometric assays:ABTS (2,2’-azino-bis 3-ethylbenzthiazoline-6-sulfonic acid), DPPH (2, 2’- diphenyl-1-picrylhydrazyl)and H2O2 (Hydrogen peroxide) radic

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Alimullah, Mirza, Asif Ul Haque Shuvo, Md Delower Hossain, et al. "Evaluation of Bioactive Compounds from Various Citrus Fruits in Bangladesh and Evaluation of Their Effect as Antioxidant and on Glucose Metabolizing Enzymes In Vitro." Journal of Biosciences and Experimental Pharmacology 2, no. 1 (2023): 46–64. https://doi.org/10.62624/jbep00.0010.

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Synthetic antioxidants are used against oxidative stress and nitrosative stress, which have many harmful effects and possess lower efficacies; hence, the interest of using natural antioxidants such as citrus fruits as therapeutic tools exist. This study set out to assess the flavonoids identified from various citrus fruits in Bangladesh (cagoji lebu, kalombo lebu, and alichi lebu) as antioxidants and their effect on α-amylase inhibitory activity in in vitro condition. Phytochemical screening, UV-vis spectra and HPLC-DAD analysis were performed to determine the class, nature and identity of bio

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Kawamoto, Manabu, Akiko Fujiwara, Shin-ichi Kuno, and Ikuo Yasumasu. "Changes in the activities of protein phosphatase type 1 and type 2A in sea urchin embryos during early development." Zygote 8, S1 (1999): S68—S69. http://dx.doi.org/10.1017/s0967199400130370.

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Serine/threonine protein phosphatases expected to participate in the process of signal transduction, cell movement such as cell division and gene expression (Kinoshita et al., 1990; Healy et al., 1991; Mayer-Jaekel et al., 1993; Mumby & Walter, 1993), are classified into type 1 (PP1), type 2A (PP2A), type 2B and type 2C in mammalian cells. PP1 and PP2A are known to be strongly inhibited by okadaic acid (OA) (Tachibana et al., 1981; Bialojan Takai, 1988), a polyether fatty acid isolated from the marine sponge Halicondria okadai (Haystead et al., 1989). OA is also known to inhibit PP2A at lo

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Uddin, Helal, Md Khalid Hasan, and Rafael Castro-Delgado. "Effects of mass casualty incidents on anxiety, depression and PTSD among doctors and nurses: a systematic review protocol." BMJ Open 13, no. 9 (2023): e075478. http://dx.doi.org/10.1136/bmjopen-2023-075478.

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IntroductionBoth doctors and nurses showed a greater risk of being exposed to different mental health conditions following mass casualties. This systematic review aims to synthesise the existing evidence on the prevalence of anxiety, depression and post-traumatic stress disorder and their associated risk factors among doctors and nurses following mass casualty incidents.Methods and analysisSeven electronic databases (PubMed, PsycINFO, MEDLINE Ovid, Embase, CINAHL, Web of Science and Nursing & Allied Health database) will be searched from 2010 to 2022 with peer-reviewed articles in English

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Xu, Xiaohui, Yaqin Huang, Jian Chen, and Zhi Zeng. "A New Algorithm Based on the Phytoplankton Absorption Coefficient for Red Tide Monitoring in the East China Sea via a Geostationary Ocean Color Imager (GOCI)." Remote Sensing 17, no. 5 (2025): 750. https://doi.org/10.3390/rs17050750.

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Rapid and accurate dynamic monitoring and quantitative analysis of red tide disasters are of significant practical importance to national economic development. Remote sensing technology is an effective means for monitoring red tides. This paper utilizes GOCI satellite data and employs a quasi-analytical algorithm (QAA) to retrieve the spectral curves of phytoplankton absorption coefficients. On the basis of a detailed analysis of the differences in the spectral curves of the phytoplankton absorption coefficients between red tide and non-red tide waters, we establish a red tide identification a

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Mudge, Elizabeth M., Paula N. Brown, Catherine A. Rimmer, and Melissa M. Phillips. "Determination of Curcuminoids in Turmeric Dietary Supplements by HPLC-DAD: Multi-laboratory Study Through the NIH-ODS/NIST Quality Assurance Program." Journal of AOAC INTERNATIONAL 103, no. 6 (2020): 1625–32. http://dx.doi.org/10.1093/jaoacint/qsaa069.

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Abstract Background Turmeric is a medicinal herb containing curcuminoids, used as quality markers in dietary supplements. In 2016, an AOAC First Action Official MethodSM was adopted for quantitation of curcuminoids and requires multi-laboratory reproducibility data for Final Action status. Objective To collect reproducibility data for the quantitation of curcuminoids in dietary supplements through the National Institutes of Health Office of Dietary Supplements/National Institute of Standards and Technology Quality Assurance Program (QAP). Method Laboratories that participated in the QAP by fol

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Sait, Abdul Rahaman Wahab, and Ramprasad Nagaraj. "An Enhanced LightGBM-Based Breast Cancer Detection Technique Using Mammography Images." Diagnostics 14, no. 2 (2024): 227. http://dx.doi.org/10.3390/diagnostics14020227.

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Breast cancer (BC) is the leading cause of mortality among women across the world. Earlier screening of BC can significantly reduce the mortality rate and assist the diagnostic process to increase the survival rate. Researchers employ deep learning (DL) techniques to detect BC using mammogram images. However, these techniques are resource-intensive, leading to implementation complexities in real-life environments. The performance of convolutional neural network (CNN) models depends on the quality of mammogram images. Thus, this study aimed to build a model to detect BC using a DL technique. Im

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Guo, Shichen, Qi Yang, Shiming Xiang, Shuwen Wang, and Xuezhi Wang. "Mask2Former with Improved Query for Semantic Segmentation in Remote-Sensing Images." Mathematics 12, no. 5 (2024): 765. http://dx.doi.org/10.3390/math12050765.

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Semantic segmentation of remote sensing (RS) images is vital in various practical applications, including urban construction planning, natural disaster monitoring, and land resources investigation. However, RS images are captured by airplanes or satellites at high altitudes and long distances, resulting in ground objects of the same category being scattered in various corners of the image. Moreover, objects of different sizes appear simultaneously in RS images. For example, some objects occupy a large area in urban scenes, while others only have small regions. Technically, the above two univer

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