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Journal articles on the topic 'GC/SM'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Shachneva, M. D., N. L. Koryagina, and E. I. Savelieva. "Improvement of the procedure for bis(2-chloroethyl)sulfide determination in matrices with high sorption activity." Аналитика и контроль 25, no. 2 (2021): 110–16. http://dx.doi.org/10.15826/analitika.2021.25.2.004.

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A rapid, unified, highly sensitive and selective procedure for bis(2-chloroethyl)sulfide (sulfur mustard, SM) determination in matrices with high sorption activity using gas chromatography-tandem mass-spectrometry (GC-MS/MS) was developed. Ceramic tile, concrete, various types of bricks and polymers were studied as objects of the analysis. The parameters for the GC-MS/MS determination of SM were optimized. The efficiency of five solvents (diethyl ether, 2-chloropropane, acetonitrile, hexane, and acetone) for the extraction of SM from the various matrices was studied. 2-chloropropane was the ex

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Pontes, Lucas Mutarelli, Leandro Brasil Rego, Lucas Marques Vieira, et al. "Determinação do somatotipo em idosos brasileiros com síndrome metabólica." CONTRIBUCIONES A LAS CIENCIAS SOCIALES 17, no. 13 (2024): e14105. https://doi.org/10.55905/revconv.17n.13-502.

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A síndrome metabólica é maior na população idosa, sendo responsável por um aumento de 2,5 vezes o risco para doenças cardiovasculares e de cinco vezes para o desenvolvimento de diabetes mellitus. O uso de métodos antropométricos para determinar a saúde e doença sempre foi uma preocupação entre pesquisadores, porque são de baixo custo, não invasivos e de fácil aplicação clínica. Desta forma, este estudo teve como objetivo determinar o somatotipo predominante em idosos com síndrome metabólica (SM). A amostra foi composta por idosos com 60 idosos ou mais que foram divididos em dois grupos: Grupo

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3

Dong, Yu Bing, Ming Jing Li, and Ying Sun. "Evaluation Criterion for Threshold Segmentation Algorithms." Applied Mechanics and Materials 525 (February 2014): 719–22. http://dx.doi.org/10.4028/www.scientific.net/amm.525.719.

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Threshold-based segmentation algorithms are introduced and simulated. In order to evaluate the performance of various threshold segmentation algorithms, the quantitative experimental criterions are introduced and applied. And through large experiments by using MATLAB, threshold segmentation algorithms are evaluate with uniformity measure (UM), shape measure (SM) and gray-level contrast (GC). The effect of image segmentation is described by using the average value of three experimental criterions (UM, SM and GC).

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Yamamoto, N., and R. Kumashiro. "Conversion of vitamin D3 binding protein (group-specific component) to a macrophage activating factor by the stepwise action of beta-galactosidase of B cells and sialidase of T cells." Journal of Immunology 151, no. 5 (1993): 2794–802. http://dx.doi.org/10.4049/jimmunol.151.5.2794.

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Abstract Highly conserved DBP (human DBP is known as Gc) of serum alpha 2-globulin fraction can be converted to a potent macrophage activating factor by stepwise modification of Gc glycoprotein with beta-galactosidase of B cells and sialidase of T cells. These glycosidases, beta-galactosidase and sialidase, are membrane bound and not soluble in culture medium. Thus, consecutive contact of Gc protein with B cells and T cells, presumably via specific receptors, is required for conversion of Gc glycoprotein to the macrophage activating factor. The essential role of T cell sialidase in macrophage

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Lies, Barbara, Víctor Gil, Dieter Groneberg, et al. "Interstitial cells of Cajal mediate nitrergic inhibitory neurotransmission in the murine gastrointestinal tract." American Journal of Physiology-Gastrointestinal and Liver Physiology 307, no. 1 (2014): G98—G106. http://dx.doi.org/10.1152/ajpgi.00082.2014.

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Nitric oxide (NO) is a major inhibitory neurotransmitter in the gastrointestinal (GI) tract. Its main effector, NO-sensitive guanylyl cyclase (NO-GC), is expressed in several GI cell types, including smooth muscle cells (SMC), interstitial cells of Cajal (ICC), and fibroblast-like cells. Up to date, the interplay between neurons and these cells to initiate a nitrergic inhibitory junction potential (IJP) is unclear. Here, we investigate the origin of the nitrergic IJP in murine fundus and colon. IJPs were determined in fundus and colon SMC of mice lacking NO-GC globally (GCKO) and specifically

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D.Kovács, Dávid, Eatidal Amin, Katja Berger, Pablo Reyes-Muñoz, and Jochem Verrelst. "Untangling the Causal Links between Satellite Vegetation Products and Environmental Drivers on a Global Scale by the Granger Causality Method." Remote Sensing 15, no. 20 (2023): 4956. http://dx.doi.org/10.3390/rs15204956.

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The Granger Causality (GC) statistical test explores the causal relationships between different time series variables. By employing the GC method, the underlying causal links between environmental drivers and global vegetation properties can be untangled, which opens possibilities to forecast the increasing strain on ecosystems by droughts, global warming, and climate change. This study aimed to quantify the spatial distribution of four distinct satellite vegetation products’ (VPs) sensitivities to four environmental land variables (ELVs) at the global scale given the GC method. The GC analysi

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Matusik, Jean E., Richard S. Sternal, Charlie J. Barnes, and James A. Sphon. "Confirmation of Identity by Gas Chromatography/Tandem Mass Spectrometry of Sulfathiazole, Sulfamethazine, Sulfachloropyridazine, and Sulfadimethoxine from Bovine or Swine Liver Extracts after Quantitation by Gas Chromatography/Electron-Capture Detection." Journal of AOAC INTERNATIONAL 73, no. 4 (1990): 529–33. http://dx.doi.org/10.1093/jaoac/73.4.529.

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Abstract Four sulfonamide veterinary drug residues were quantltated by electron-capture detection (ECD) after separation by gas chromatography (GC). The Identities of sulfathiazole (ST), sulfamethazine (SM), sulfachloropyridazine (SCP), and sulfadimethoxine (SDM) were confirmed In bovine or swine liver residues by tandem mass spectrometry (MS/MS). Bovine or swine liver tissues were extracted by using either the Tlshler or the Manuel-Steller cleanup. The methylated residues containing ST, SM, SCP, and SDM were separated by GC prior to MS/MS daughter ion analysis. Control tissue, control tissue

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8

Li, Shouxue, Yuchao Feng, Yusho Zhang, and Xia Fan. "A novel analytical strategy for rapid detection of antibiotic dregs adulteration in feed protein materials by headspace gas chromatography–ion mobility spectrometry." Quality Assurance and Safety of Crops & Foods 17, no. 1 (2025): 30–41. https://doi.org/10.15586/qas.v17i1.1517.

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The recognized shortage of feed protein materials (FPM), together with their high prices, has almost inevitably led to economically motivated adulteration. In this study, a rapid and accurate headspace gas chromatography–ion mobility spectrometry (HS-GC-IMS) method was applied to detect soybean meal (SM) and cottonseed meal (CM) adulteration with oxytetracycline dregs (OD). A total of 98 volatile compounds were detected in the 14 samples (5 SM, 5 CM, and 4 OD). FPMs and adulterated FPMs in different proportions (0.1, 0.5, 1, and 5%, w/w) were clas-sified based on their volatile compounds using

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9

Gatti, Riccardo. "Gilbreath Equation, Gilbreath Polynomials, and Upper and Lower Bounds for Gilbreath Conjecture." Mathematics 11, no. 18 (2023): 4006. http://dx.doi.org/10.3390/math11184006.

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Let S=s1,…,sn be a finite sequence of integers. Then, S is a Gilbreath sequence of length n, S∈Gn, iff s1 is even or odd and s2,…,sn are, respectively, odd or even and minKs1,…,sm≤sm+1≤maxKs1,…,sm,∀m∈1,n. This, applied to the order sequence of prime number P, defines Gilbreath polynomials and two integer sequences, A347924 and A347925, which are used to prove that Gilbreath conjecture GC is implied by pn−2n−1⩽Pn−11, where Pn−11 is the n−1-th Gilbreath polynomial at 1.

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Alvarez, Marlene M., Ana Carolina R. e. Vieira, Rosely Sichieri, and Gloria V. da Veiga. "Associação das medidas antropométricas de localização de gordura central com os componentes da síndrome metabólica em uma amostra probabilística de adolescentes de escolas públicas." Arquivos Brasileiros de Endocrinologia & Metabologia 52, no. 4 (2008): 649–57. http://dx.doi.org/10.1590/s0004-27302008000400011.

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Avaliou-se a associação entre medidas antropométricas de localização de gordura central: circunferências da cintura (CC) e abdominal (CA) e as razões cintura/quadril (RCQ) e cintura/estatura (RCE), independente do percentual de gordura corporal (%GC) e índice de massa corporal (IMC), com os componentes da síndrome metabólica (SM) em uma amostra probabilística de 610 (222 meninos e 388 meninas) adolescentes de 12 a 19 anos de escolas públicas de Niterói, RJ. Foram avaliados glicose e perfil lipídico pelo método enzimático automatizado, insulina pela técnica de radioimunoensaio, %GC pela bioimpe

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Johansen Taber, Katie, Elisha Hughes, Alexander Gutin, et al. "Association of polygenic-based breast cancer risk prediction with patient management." Journal of Clinical Oncology 42, no. 16_suppl (2024): 10527. http://dx.doi.org/10.1200/jco.2024.42.16_suppl.10527.

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10527 Background: Guidelines recommend individuals with ≥20% lifetime risk of breast cancer (BC) undergo enhanced management, including annual screening mammography (SM) as early as age 30, annual breast MRI, and genetic counseling (GC). Lifetime BC risk can be estimated using a validated risk model, such as Tyrer-Cuzick (TC). A risk predictor that combines TC with a polygenic risk score (“combined risk score” or CRS) significantly improves risk prediction over TC alone. Little is known about how clinicians manage patients based on CRS. Here, we describe management following receipt of CRS res

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12

Tang, Chuyang, Lei Yang, Xianchun Li, and Jinling Song. "Characteristics of small molecule compounds produced from the co-pyrolysis of cotton stalk and coal." BioResources 16, no. 1 (2021): 1469–81. http://dx.doi.org/10.15376/biores.16.1.1469-1481.

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Pyrolysis experiments of cotton stalk (CS) and Shenmu coal (SM) were conducted in a tubular furnace. The pyrolysis temperature was 600 °C at 5 °C/min and sustained for 15 min. The water-soluble small molecule compounds (WSMC) were derived from the liquid products obtained during pyrolysis with the methods of toluene entrainment and ultrasonic extraction. The compositions of WSMC were further characterized by gas chromatography–mass spectrometry (GC-MS). The components of the syngas were analyzed by gas chromatography (GC). The results showed that the phenol yield was promoted by the interactio

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Rosa, Renata, Marceléia Rubert, L. Giuliano-Caetano, and I. Martins-Santos. "Differential chromosomal markers between sympatric karyomorphs of the fish Hoplias malabaricus (Bloch, 1794) (Characiformes: Erythrinidae)." Comparative Cytogenetics 4, no. (2) (2010): 175–84. https://doi.org/10.3897/compcytogen.v4i2.48.

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Cytogenetic analyses were performed on <em>Hoplias malabaricus</em> (Bloch, 1794) from the Taquari River, Parana River drainage, revealing two sympatric karyomorphs. One karyomorph was characterized by 2n = 40 m/sm and 2n = 39 m/sm chromosomes for females and males, respectively, and an X1X1X2X2/X1X2Y sex chromosome system. In the second karyomorph, specimens showed 2n = 42 m/sm chromosomes, without sex-related heteromorphism. Both karyomorphs were characterized by a distribution of heterochromatin in the pericentromeric and telomeric regions. In addition to the differences in the diploid numb

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14

Fernandes, M. G., R. A. Gomes, S. G. Brito-Filho, et al. "Characterization and anti-staphylococcal activity of the essential oil from Turnera subulata Sm." Revista Brasileira de Plantas Medicinais 16, no. 3 (2014): 534–38. http://dx.doi.org/10.1590/1983-084x/13_011.

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The present study is pioneer in analyzing the chemical composition of the essential oil from aerial parts of Turnera subulata Sm. and evaluates their antibacterial activity against a panel of drug-resistant strains of Staphylococcus aureus. The aerial parts were kiln-dried and then powdered in mechanical mill, and was subjected to hydrodistillation in a Clevenger-type apparatus. The components were analyzed using a mass spectrometrycoupled gas chromatography (GC-MS), and the identification of substances was performed by comparison of the mass spectra obtained with the mass spectra of the datab

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Sun, Tongtong, Xiaoting Chen, Zhiyu Liu, et al. "Comparative Analysis of the Nutritional Composition and Flavor Profile of Different Muscle Parts of Hybrid Abalone (Haliotis discus hannai ♀ × H. fulgens ♂)." Foods 14, no. 7 (2025): 1265. https://doi.org/10.3390/foods14071265.

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This study analyzed the basic nutritional components and amino acid, fatty acid, and mineral composition of hybrid abalone Haliotis discus hannai ♀ × H. fulgens ♂ adductor (AM), transition (TM), and skirt (SM) muscles. The taste characteristics of the muscles were measured via electronic tongue, and the volatile compounds were identified by headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) analysis. Compared to SM, AM and TM exhibited relatively similar basic nutritional compositions. Although SM exhibited the highest moisture content (84.67%), its prot

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Gianini Aquino, Analía C., Melisa González Flores, Ana I. Honfi, and Julio R. Daviña. "Heterochromatin patterns in four diploid Zephyranthes species with different basic chromosome number (Amaryllidaceae)." Darwiniana, nueva serie 11, no. 2 (2023): 705–18. http://dx.doi.org/10.14522/darwiniana.2023.112.1124.

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Diverse species-specific karyotypes have been reported within Zephyranthes Herb., as well as different basic chromosome numbers (x = 5, 6, 7, and 9), with x = 6 being the most common. The aim of this work was to analyze the constitutive heterochromatin (C-Het) pattern of karyotypes in four diploid Zephyranthes species. For this purpose, a cytomolecular analysis of the karyotypes of Z. andalgalensis (2n = 2x = 12 = 4 m + 2 sm), Z. chacoensis (2n = 2x = 12 = 3 m + 2 sm + 1 st), Z. robusta (2n = 2x = 12 = 3 m + 2 sm + 1 st), and Z. pedunculosa (2n = 2x = 14 = 1 m + 3 sm + 3 st) was performed for

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Wang, Haoyi, Xiaoyu Yin, Lu Zhang, et al. "Insight into the Relationship between the Causes of Off-Odour and Microorganism Communities in Xuanwei Ham." Foods 13, no. 5 (2024): 776. http://dx.doi.org/10.3390/foods13050776.

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To expound on the correlation between the microorganism communities and the formation of off-odour in Xuanwei ham, the microorganism communities and volatile compounds were investigated in the biceps femoris (BF) and semimembranosus (SM) of Xuanwei ham with different quality grades (normal ham and spoiled ham). The single molecule real-time sequencing showed that differential bacteria and fungi were more varied in normal hams than in spoiled hams. Headspace solid-phase microextraction–gas chromatography (HS-SPME-GC-MS) results indicated that aldehydes and alcohols were significantly higher in

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O., Chouitah, Meddah B., and Sonnet P. "Chemical Composition and Antimicrobial Activity OF Essential Oil from the Leaves of Satureja hortensis L." Algerian Journal of Natural Products 6, no. 2 (2018): 639–44. https://doi.org/10.5281/zenodo.2577838.

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Interest in essential oils was recently revived with their popularity increasing in medicine, pharmacy, and aromatherapy.the present study is aimed to determine the volatile composition of <em>Satureja hortensis </em>L.essential oil (EO) by means of gas chromatography coupled to flame ionization/mass spectrometry detection. Moreover, the antimicrobial activities of the EO on same food borne pathogens were tested. The results showed that the essential oils was analyzed by GC/GC-MS and resulted in the identification of twenty compounds representing 97.52 % of the oil were identified.  The m

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El BAROTY, Gamal S., Hanaa H. Abd El BAKY, and Mahmoud A. SALEH. "Egyptian Arthrospira phytosterols: production, identification, antioxidant and antiproliferative activities." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 48, no. 2 (2020): 666–80. http://dx.doi.org/10.15835/nbha48211670.

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Cultivation of microalgae as a source of phytosterol and other lipid compounds has gained more attention for commercial applications in pharmaceutical, cosmetic and food function industries. In this research, native Spirulina maxima SM from Egypt was grown in individual cultures containing various concentrations of nitrogen (N), phosphorus (P) and sulfur (S) elements in order to elucidate the effect of its elements on lipid and phytosterols production and to evaluate its antioxidant and antiproliferative activities. The results revealed that the SM was able to grow in different concentrations

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González-Lópezlira, Rosa A., Luis Lomelí-Núñez, Yasna Ordenes-Briceño, et al. "The Relation between Globular Cluster Systems and Supermassive Black Holes in Spiral Galaxies. III. The Link to the M _•–M _* Correlation." Astrophysical Journal 941, no. 1 (2022): 53. http://dx.doi.org/10.3847/1538-4357/ac982e.

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Abstract We continue to explore the relationship between the total number of globular clusters (GCs), N GC, and the central black hole mass, M •, in spiral galaxies. We present here results for the Sab galaxies NGC 3368, NGC 4736 (M94), and NGC 4826 (M64), and the Sm galaxy NGC 4395. The GC candidate selection is based on the (u* – i ′ ) versus ( i ′ – K s ) color–color diagram, and i ′ -band shape parameters. We determine the M • versus N GC correlation for these spirals, plus NGC 4258, NGC 253, M104, M81, M31, and the Milky Way. We also redetermine the correlation for the elliptical sample i

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Nichols, Jacqueline A., Maria Chiara Perego, Luis F. Schütz, Amber M. Hemple, and Leon J. Spicer. "Hormonal regulation of vascular endothelial growth factor A (VEGFA) gene expression in granulosa and theca cells of cattle1." Journal of Animal Science 97, no. 7 (2019): 3034–45. http://dx.doi.org/10.1093/jas/skz164.

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Abstract Vascular endothelial growth factor A (VEGFA) stimulates angiogenesis and is associated with increased vascularity in ovarian follicles of cattle. The objectives of this study were to investigate the developmental and hormonal regulation of VEGFA expression in ovarian granulosa and theca cells (TC) of cattle. Bovine ovaries were collected from a local slaughterhouse and granulosa cells (GC) and TC were collected from small (SM; 1 to 5 mm) and large (LG; 8 to 20 mm) follicles. Cells were collected fresh or cultured in serum-free medium and treated with various factors that regulate angi

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Sudhagar, Rajaprakasam, Shanmugavel Priyanka, Vanniarajan Chockalingam, et al. "Development and Metabolic Characterization of Horse Gram (Macrotyloma uniflorum Lam. (Verdc.)) Mutants for Powdery Mildew Resistance." Agronomy 12, no. 4 (2022): 800. http://dx.doi.org/10.3390/agronomy12040800.

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Horse gram is one of the lesser-known beans widely grown in India. One hundred and twenty-three homozygous horse gram mutants were screened for powdery mildew (PM) disease resistance using the grade 0 to 4. The mutants were grouped based on the disease level of 0 to 2 (resistant) and susceptible (3 to 4). The PM altered the chlorophyll fluorescence (a/b ratio), maturity duration, and yield attributing traits. The yield loss ranged from 4.55% to 72.66%. After affirming the resistance level, the resistant mutant (RM) with minimum yield loss (scale:0) and the susceptible mutant (SM) with maximum

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Potapov, A. L., V. E. Khoronenko, E. V. Gameeva, Zh V. Khailova, A. D. Dorozhkin, and V. Yu Scoropad. "Oral nutritional supplements for gastric cancer – the review of current evidence." Research and Practical Medicine Journal 8, no. 1 (2021): 53–61. http://dx.doi.org/10.17709/2409-2231-2021-8-1-5.

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The analysis of the current evidence base concerning the use of oral nutritional supplements (ONS) in gastric cancer (GC) has been made. Databases of scientific information eLIBRARY.ru and PubMed were used. Emphasis is placed on randomized clinical trials and meta‑analyses. The application of ONS is suggested for all patients who undergo to surgical treatment for GC. Its use allows increasing protein and energy consumption, improving the quality of life, some parameters of nutritional status and immunity (albumin, blood lymphocytes etc.). In patients with severe malnutrition (SM) ONS can signi

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24

Jaramillo, Stalin P., James Calva, Andy Jiménez, and Chabaco Armijos. "Isolation of Geranyl Acetate and Chemical Analysis of the Essential Oil from Melaleuca armillaris (Sol. ex Gaertn.) Sm." Applied Sciences 14, no. 5 (2024): 1864. http://dx.doi.org/10.3390/app14051864.

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A method was developed for the isolation of geranyl acetate from the crude essential oil (EO) of Melaleuca armillaris (Sol. ex Gaertn.) Sm. leaves, and the purity of the isolated compound was analyzed by GC/MS spectral and NMR analysis and was found to have high purity (98.9%). In addition, the EO isolated presented 0.907 g/cm3, 1.474 and [α]D20=−17.6 of density, refraction index and optical rotation, respectively. The chemical composition of the EO obtained for steam distillation from M. armillaris was analyzed by gas chromatographic and spectroscopic techniques (GC/MS and GC/FID). Thirty-eig

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Estuardo-Moreno, H., A. Gomez-Alvarez, J. A. Lucero-Acuña, F. J. Almendariz-Tapia, H. E. Esparza-Ponce, and R. Ramirez-Leal. "Physical and Chemical Morphology of Organic Compounds at PM10 by TEM-EDS and GC-SM." Microscopy and Microanalysis 28, S1 (2022): 3218–19. http://dx.doi.org/10.1017/s1431927622011977.

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Kim, Jee In, Mark Urban, Garbo D. Young, and Masumi Eto. "Reciprocal regulation controlling the expression of CPI-17, a specific inhibitor protein for the myosin light chain phosphatase in vascular smooth muscle cells." American Journal of Physiology-Cell Physiology 303, no. 1 (2012): C58—C68. http://dx.doi.org/10.1152/ajpcell.00118.2012.

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Cellular activity of the myosin light chain phosphatase (MLCP) determines agonist-induced force development of smooth muscle (SM). CPI-17 is an endogenous inhibitor protein for MLCP, responsible for mediating G-protein signaling into SM contraction. Fluctuations in CPI-17 expression occur in response to pathological stresses, altering excitation-contraction coupling in SM. Here, we determined the signaling pathways regulating CPI-17 expression in rat aorta tissues and the cell culture using a pharmacological approach. CPI-17 transcription was suppressed in response to the proliferative stimulu

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Pieracci, Ylenia, Roberta Ascrizzi, Luisa Pistelli, and Guido Flamini. "Comparison of the Chemical and Sensorial Evaluation of Dark Chocolate Bars." Applied Sciences 11, no. 21 (2021): 9964. http://dx.doi.org/10.3390/app11219964.

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As it mimics olfactory perception, headspace analysis is frequently used for examination of products like chocolate, in which aroma is a key feature. Chemical analysis by itself, however, only provides half the picture, as final consumer’s perception cannot be compared to that of a Gas Chromatography-Mass Spectrometry (GC-MS) port, but rather to a panel test assessment. The aim of the present study was the evaluation of combined chemical (by means of headspace solid-phase microextraction and GC-MS) and panel test data (by means of a sensory evaluation operated by 6 untrained panelists) obtaine

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Wangchuk, Phurpa, Constantin Constantinoiu, Ramon M. Eichenberger, Matt Field, and Alex Loukas. "Characterization of Tapeworm Metabolites and Their Reported Biological Activities." Molecules 24, no. 8 (2019): 1480. http://dx.doi.org/10.3390/molecules24081480.

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Parasitic helminths infect billions of people, livestock, and companion animals worldwide. Recently, they have been explored as a novel therapeutic modality to treat autoimmune diseases due to their potent immunoregulatory properties. While feeding in the gut/organs/tissues, the parasitic helminths actively release excretory-secretory products (ESP) to modify their environment and promote their survival. The ESP proteins of helminths have been widely studied. However, there are only limited studies characterizing the non-protein small molecule (SM) components of helminth ESP. In this study, us

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Tao, Jianyun, Xuelian Bai, Mingyuan Zeng, et al. "Whole-Genome Sequence Analysis of an Endophytic Fungus Alternaria sp. SPS-2 and Its Biosynthetic Potential of Bioactive Secondary Metabolites." Microorganisms 10, no. 9 (2022): 1789. http://dx.doi.org/10.3390/microorganisms10091789.

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As one of the commonly isolated endophytic fungi, Alternaria has been known for the production of numerous secondary metabolites (SMs). However, its detailed genomic features and SM biosynthetic potential have not been extensively studied thus far. The present work focuses on the whole-genome sequencing and assembly of an endophytic strain Alternaria sp. SPS-2 derived from Echrysantha chrysantha Lindl. and gene annotation using various bioinformatic tools. The results of this study suggested that the genome of strain SPS-2 was 33.4 Mb in size with a GC content of 51% and an N50 scaffold of 2.6

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Ham, Hun-Ju, Syed Wasim Sardar, Abd Elaziz Sulieman Ahmed Ishag, Jeong-Yoon Choi та Jang-Hyun Hur. "Optimization of an Analytical Method for Indoxacarb Residues in Fourteen Medicinal Herbs Using GC–μECD, GC–MS/MS and LC–MS/MS". Separations 9, № 9 (2022): 232. http://dx.doi.org/10.3390/separations9090232.

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Pesticide residue analysis in medicinal herbs is a challenging task because of the matrix effect and its influence on quantitative analysis despite the continuous development of several new analytical methods and instrumentations. In this study, a modified QuEChERS method was developed for the analysis of indoxacarb residue in medicinal herbs by using the conventional instrument, gas chromatography micro-electron-capture-detector (GC–μECD), and comparing it with gas chromatography–tandem mass spectrometry (GC–MS/MS) and liquid chromatography–tandem mass spectrometry (LC–MS/MS). Samples were ex

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Arya, Pooja. "Phytochemical Analysis and Antimicrobial Evaluation of Essential Oils from Eucalyptus tereticornis Sm." International Journal for Research in Applied Science and Engineering Technology 12, no. 7 (2024): 1196–201. http://dx.doi.org/10.22214/ijraset.2024.63753.

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Abstract: This study investigates the phytochemical composition and antimicrobial properties of essential oils extracted from Eucalyptus tereticornis Sm. Using gas chromatography-mass spectrometry (GC-MS) and in vitro antimicrobial assays. Essential oils were extracted from the leaves of Eucalyptus tereticornis through hydrodistillation, yielding 2.5% (v/w) of oil. GC-MS analysis identified 32 compounds, with 1,8-cineole (45.2%), α-pinene (15.8%), and β-pinene (9.3%) being the predominant constituents. The antimicrobial activity of the essential oils was tested against a range of pathogenic mi

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Pejin, Boris, Ljubodrag Vujisic, Marko Sabovljevic, Vele Tesevic, and Vlatka Vajs. "Fatty acid chemistry of Atrichum undulatum and Hypnum andoi." Chemical Industry 66, no. 2 (2012): 207–9. http://dx.doi.org/10.2298/hemind110918074p.

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The fatty acid composition of the moss species Atrichum undulatum (Hedw.) P. Beauv. (Polytrichaceae) and Hypnum andoi A.J.E. Sm. (Hypnaceae) collected in winter time were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) as a contribution to their chemistry. Eight fatty acids were identified in the chloroform/methanol extract 1:1 of A. undulatum (linoleic acid 26.80%, palmitic acid 22.17%, ?-linolenic acid 20.50%, oleic acid 18.49%, arachidonic acid 6.21%, stearic acid 3.34%, cis-5,8,11,14,17-eicosapentaenoic acid 1.52% and behenic acid 1.01%), while six fatt

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Bakhy, Khadija, Ouafae Benlhabib, Chaouki Al Faiz, Ange Bighelli, Joseph Casanova, and Felix Tomi. "Wild Thymbra Capitata from Western Rif (Morocco): Essential Oil Composition, Chemical Homogeneity and Yield Variability." Natural Product Communications 8, no. 8 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800832.

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Essential oils (EO, 15 collective samples and 47 individual samples) of Thymbra capitata collected from Moroccan Western Rif were analyzed using gas chromatography (GC) in combination with retention indices (RI), gas chromatography-mass spectrometry (GC-SM) and 13C NMR spectroscopy. Twenty components were identified. Carvacrol (68.2%–85.9 %) was by far the major component of all the samples, while the content of thymol (0.1-0.3%) was very low. Other components present in appreciable amounts were γ-terpinene (up to 8.9%), p-cymene (up to 7.1%), linalool (up to 4.4%) and ( E)- β-caryophyllene (u

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Tine, Yoro, Alioune Diallo, Abdoulaye Diop, et al. "The Essential oil of Eucalyptus alba L. Growing on the Salt Zone of Fatick (Senegal) as a Source of 1,8Cineole and Their Antibacterial Activity." Journal of Drug Delivery and Therapeutics 10, no. 1-s (2020): 140–43. http://dx.doi.org/10.22270/jddt.v10i1-s.3918.

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Members of the genus Eucalyptus are potential sources of number of commercial essential oils and aromachemicals. In present study, the essential oils isolated by hydrodistillation from the leaves of Eucalyptus alba were analyzed by GC-FID and GC-MS. Essential oil yields ranged from 2.41 to 4.35%. In total 18 constituents were identified, accounting for 99.0 to 99.7% of the total compositions. 1,8-cineole was present in all samples as the major component (76.5-88.1%). In addition to this compound, others that were found including limonene (3.8–8.6%), α-terpineol (1.4–2.8%), globulol (1.3–6.3%)

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Hartono, Figosstar, Ahmad Suseno, Yayuk Astuti, and Didik Setiyo Widodo. "EFFECT OF CALCINATION TEMPERATURE ON THE PROPERTIES OF SILICA-SUPPORTED Ni-Cu CATALYST FOR THE HYDROCRACKING REACTION OF USED COOKING OIL TO BIOFUEL." Cognizance Journal of Multidisciplinary Studies 3, no. 12 (2023): 21–31. http://dx.doi.org/10.47760/cognizance.2023.v03i12.004.

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The hydrocracking reaction is a reaction that breaks hydrocarbon bonds from vegetable oil into shorter hydrocarbons so that they can be used as biofuel. Ni and Cu metals are quite commonly used in this reaction, where Ni metal functions as an active catalyst in the reaction, and Cu metal plays a role in increasing the stability of Ni metal from coke formation during the hydrocracking reaction. Mesoporous silica is used as a carrier for Ni and Cu metals because it has high stability and porosity. Calcination is one of the processes in the synthesis of mesoporous silica which aims to remove the

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Figosstar, Hartono, Suseno Ahmad, Astuti Yayuk, and Setiyo Widodo Didik. "EFFECT OF CALCINATION TEMPERATURE ON THE PROPERTIES OF SILICA-SUPPORTED Ni-Cu CATALYST FOR THE HYDROCRACKING REACTION OF USED COOKING OIL TO BIOFUEL." Cognizance Journal of Multidisciplinary Studies (CJMS) 3, no. 12 (2023): 21–31. https://doi.org/10.47760/cognizance.2023.v03i12.004.

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The hydrocracking reaction is a reaction that breaks hydrocarbon bonds from vegetable oil into shorter hydrocarbons so that they can be used as biofuel. Ni and Cu metals are quite commonly used in this reaction, where Ni metal functions as an active catalyst in the reaction, and Cu metal plays a role in increasing the stability of Ni metal from coke formation during the hydrocracking reaction. Mesoporous silica is used as a carrier for Ni and Cu metals because it has high stability and porosity. Calcination is one of the processes in the synthesis of mesoporous silica which aims to remove the

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Zou, Yana, and Xiangrong Wang. "Analysis of Influencing Factors of Terrestrial Carbon Sinks in China Based on LightGBM Model and Bayesian Optimization Algorithm." Sustainability 17, no. 11 (2025): 4836. https://doi.org/10.3390/su17114836.

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With accelerating climate change and urbanization, regional carbon balance faces increasing uncertainty. Terrestrial carbon sinks play a crucial role in advancing China’s sustainable development under the dual-carbon strategy. This study quantitatively modeled China’s terrestrial carbon sink capacity and analyzed the multidimensional relationships between impact factors and carbon sinks. After preprocessing multi-source raster data, we introduced kernel normalized the difference vegetation index (kNDVI) to the Carnegie–Ames–Stanford approach (CASA) model, together with a heterotrophic respirat

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Ha, Thi Minh Thi, Thanh Nha Uyen Le, Viet Nhan Nguyen, and Van Huy Tran. "Association of TP53 gene codon 72 polymorphism with Helicobacter pylori-positive non-cardia gastric cancer in Vietnam." Journal of Infection in Developing Countries 13, no. 11 (2019): 984–91. http://dx.doi.org/10.3855/jidc.11488.

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Introduction: This research aimed to determine the association of the combination of H. pylori infection and TP53 codon 72 polymorphism with non-cardia gastric cancer (GC) in Vietnam. Methodology: A total of 164 patients with non-cardia GC and 164 patients with peptic ulcer disease or functional dyspepsia in controls matched by sex and age were enrolled. H. pylori infection was diagnosed by rapid urease test and polymerase chain reaction (PCR). The cagA gene-positivity and vacA sm subtypes were determined by multiplex PCR. Genotypes of TP53 codon 72 polymorphism were determined by PCR-re

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Spoz, Aneta, Alicja Boron, Katarzyna Porycka, et al. "Molecular cytogenetic analysis of the crucian carp, Carassius carassius (Linnaeus, 1758) (Teleostei, Cyprinidae), using chromosome staining and fluorescence in situ hybridisation with rDNA probes." Comparative Cytogenetics 8, no. (3) (2014): 233–48. https://doi.org/10.3897/compcytogen.v8i3.7718.

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The crucian carp <em>Carassius carassius </em>(Linnaeus, 1758) is a species with restricted and decreasing distribution in Europe. Six males and six females of the species from the Baltic Sea basin in Poland were examined to show sequentially CMA3/AgNO3 staining pattern, DAPI staining, and, for the first time in literature, molecular cytogenetic analysis using double-colour fluorescence <em>in situ </em>hybridisation (FISH) with 28S and 5S rDNA probes. The karyotype consisted of 20 m, 36 sm and 44 sta chromosomes, NF=156. The AgNO3 stained NORs were most frequently located terminally in the sh

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Prakash, Ved. "GC-MS (Gas chromatography and mass spectroscopy) analysis of methanol leaf extract of Rhododendron arboreum Sm. of District Sirmaur, Himachal Pradesh." Journal of Drug Delivery and Therapeutics 13, no. 1 (2023): 123–26. http://dx.doi.org/10.22270/jddt.v13i1.5908.

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Plants are a rich source of secondary metabolites or chemical constituents with interesting biological activities. Therefore, a thorough validation of the herbal agents has emerged as a new branch of science emphasizing and prioritizing the standardization of the natural drugs and products because several of these phytochemicals have complementary and overlapping mechanism of action. Mass spectrometry coupled with chromatographic separations such as Gas chromatography (GC-MS) is generally used for direct analysis of components existing in traditional medicines and medicinal plants. Gas chromat

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Sangkanu, Suthinee, Jiraporn Khanansuk, Sathianpong Phoopha, et al. "Utility Assessment of Isolated Starch and Extract from Thai Yam (Dioscorea hispida Dennst.) for Cosmetic via In Vitro and In Vivo Studies." Life 15, no. 2 (2025): 151. https://doi.org/10.3390/life15020151.

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In Thailand, wild yam, or Dioscorea hispida Dennst., is a starchy crop that is usually underutilized in industry. The purpose of this study was to isolate the starch and extract the phytochemical from D. hispida and use them in cosmetics. Starch was used instead of talcum, which can cause pulmonary talcosis in dusting powder formulas (DP 1-5). GC-MS was used to identify the bioactive components present in the ethanolic extract of D. hispida. The main compounds were identified as 9,12-octadecadienoic acid (Z,Z)- (6.51%), stigmasta-5,22-dien-3-ol, (3.beta.,22E)- (6.41%), linoleic acid ethyl este

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Lu, Yingling, Yi Wang, Xiaolong Yuan, et al. "Genomic Comparative Analysis of Cordyceps pseudotenuipes with Other Species from Cordyceps." Metabolites 12, no. 9 (2022): 844. http://dx.doi.org/10.3390/metabo12090844.

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The whole genome of Cordyceps pseudotenuipes was sequenced, annotated, and compared with three related species to characterize the genome. The antibiotics and Secondary Metabolites Analysis Shell (antiSMASH) and local BLAST analysis were used to explore the secondary metabolites (SMs) and biosynthesis gene clusters (BGCs) of the genus Cordyceps. The genome-wide basic characteristics of C. pseudotenuipes, C. tenuipes, C. cicadae, and C. militaris revealed unequal genome size, with C. cicadae as the largest (34.11 Mb), followed by C. militaris (32.27 Mb). However, the total gene lengths of C. ps

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Iyabu, Hendri. "ANALISIS KANDUNGAN MINYAK ATSIRI PADA KULIT BUAH LANGSAT DENGAN METODE KROMATOGRAFI GAS-SPEKTROMETER MASSA." Jambura Journal of Chemistry 4, no. 1 (2022): 10–16. http://dx.doi.org/10.34312/jambchem.v4i1.10817.

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Penelitian ini bertujuan untuk mengetahui kandungan minyak atsiri yang terdapat pada kulit buah langsat. Pada penelitian ini dilakukan ekstraksi minyak atsiri dengan metode destilasi uap dan kromatografi gas-spektrometer massa (KG-SM). Minyak atsiri yang diperoleh memiliki bentuk cair, berwarna kuning kecokelatan. Rendemen yang diperoleh sebesar 0,18%. Analisis komponen kimia minyak atsiri kulit buah langsat dilakukan dengan menggunakan Kromatografi Gas-Spektrometer Massa (GC-MS). Komponen terbesar minyak atsiri kulit buah langsat adalah senyawa diperoleh minyak atsiri yang termasuk dalam golo

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Abdellatif, Fahima, Muhammad Akram, Samir Begaa, et al. "Minerals, Essential Oils, and Biological Properties of Melissa officinalis L." Plants 10, no. 6 (2021): 1066. http://dx.doi.org/10.3390/plants10061066.

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This study describes the minerals elements, chemical composition, antioxidant and antimicrobial activities of Algerian Melissa officinalis plant. The essential oil (EO) was extracted by hydrodistillation (HD) using a Clevenger-type apparatus of dry leaves of M. officinalis and was analyzed by two techniques, gas chromatography coupled with flame ionization (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS). Eighteen minerals comprising both macro- and microelements (As, Br, K, La, Na, Sb, Sm, Ba, Ca, Ce, Co, Cr, Cs, Fe, Rb, Sc, Th, and Zn) were determined using neutron acti

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da Rosa, Renata, Marceléia Rubert, Mauro Caetano-Filho, and Lucia Giuliano-Caetano. "Conserved Cytogenetic Features in the Amazonian Arapaima, Arapaima gigas (Schinz 1822) from Jamari River, Rondônia–Brazil." Open Biology Journal 2, no. 1 (2009): 91–94. http://dx.doi.org/10.2174/1874196700902010091.

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Specimens of Arapaima gigas from Jamari River (RO) were cytogenetically analyzed. A diploid number of 2n=56 chromosomes was found (28m-sm + 28st-a). Secondary constrictions were observed on the short arms of chromosome 3. Nucleolar Organizer Regions (NORs) were detected at the subterminal region on short arms of the third chromosomal pair by both silver nitrate staining and FISH with 45S rDNA probe, being equivalent to secondary constrictions. The ribosomal sites were also characterized by size heteromorphism and presence of CMA3+/DAPI- blocks. The constitutive heterochromatin was located at p

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Gautam, Vandana, Sukhmeen Kohli, Saroj Arora, et al. "Antioxidant and Antimutagenic Activities of Different Fractions from the Leaves of Rhododendron arboreum Sm. and Their GC-MS Profiling." Molecules 23, no. 9 (2018): 2239. http://dx.doi.org/10.3390/molecules23092239.

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In this era of urbanization and environmental pollution, antioxidants and antimutagens derived from plants are promising safeguards for human health. In the current investigation, we analyzed the antioxidant and antimutagenic effects of the hexane, chloroform, and ethyl acetate fractions of Rhododendron arboreum Sm. leaves and determined their chemical composition. The different fractions inhibited lipid peroxidation, repressed the production of nitric oxide radicals, and prevented deoxyribose degradation. The antimutagenic activity of the leaf fractions was analyzed against 4-nitro-O-phenylen

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Rodrigues, Alexandre dos Santos, Aline Souza Medrado, Débora Diniz, Claudio Oliveira, and Paulo Roberto Antunes de Mello Affonso. "ZZ/ZW sex chromosome system in the endangered fish Lignobrycon myersi Miranda-Ribeiro, 1956 (Teleostei, Characiformes, Triportheidae)." Comparative Cytogenetics 10, no. (2) (2016): 245–54. https://doi.org/10.3897/CompCytogen.v10i2.8435.

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Lignobrycon myersi is an endemic fish species from a few coastal rivers in northeastern Brazil. Based on molecular evidence, L. myersi and genera Triportheus Cope, 1872, Agoniates Müller & Troschel, 1845, Clupeacharax Pearson, 1924 and Engraulisoma Castro, 1981 were placed in the family Triportheidae. In the present work, we report the first cytogenetic data for L. myersi to test the hypothesis that Lignobrycon and Triportheus are closely related. Studied specimens presented 2n=52 with 28 metacentric (m), 18 submetacentric (sm) and six subtelocentric (st) chromosomes for males and 27 m, 19

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Fu, X. Q., Y. Li, W. J. Su, et al. " Annual dynamics of N₂O emissions from a tea field in southern subtropical China." Plant, Soil and Environment 58, No. 8 (2012): 373–78. http://dx.doi.org/10.17221/719/2011-pse.

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The annual dynamics of N<sub>2</sub>O emissions from a tea field in southern subtropical China was observed in situ weekly in 2010 using a static closed chamber &ndash; gas chromatography (GC) method for three treatments: non-fertilised (CK), conventional (CON) and rice straw mulching (SM). The annual N<sub>2</sub>O emissions for CK, CON and SM were 7.1, 17.2 and 16.7 kg N/ha/year, respectively. The N<sub>2</sub>O emission factors for the CON and SM treatments were estimated as 2.23% and 1.91% of the total fertiliser N applied, respectively. Rice straw m

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Castro, Karina Neoob de Carvalho, Kirley Marques Canuto, Edy de Sousa Brito, et al. "In vitro efficacy of essential oils with different concentrations of 1,8-cineole against Rhipicephalus (Boophilus) microplus." Revista Brasileira de Parasitologia Veterinária 27, no. 2 (2018): 203–10. http://dx.doi.org/10.1590/s1984-296120180015.

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Abstract The aim of this study was to evaluate the acaricidal activity of essential oils from three species of plants with intermediary concentrations of 1,8-cineole against the tick species Rhipicephalus (Boophilus) microplus. For this purpose, five serial concentrations (100.0, 50.0, 25.0, 12.5, 6.2 mg/mL) of essential oils from Mesosphaerum suaveolens (L.) Kuntze, Ocimum gratissimum L. and Alpinia zerumbet (Pers.) B. L. Burtt & R. M. Sm. were used on larval packet and adult immersion tests. The essential oils were analysed by gas chromatography-mass spectrometry (GC/MS) and gas chromato

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Chau, Dao T. M., Do N. Dai, Tran M. Hoi, Tran H. Thai, Tran D. Thang, and Isiaka A. Ogunwande. "Essential Oil Constituents of Etlingera yunnanensis and Hornstedtia sanhan grown in Vietnam." Natural Product Communications 10, no. 2 (2015): 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000240.

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The chemical composition of the essential oils obtained from the hydrodistillation of different parts of Etlingera yunnanensis (T.L. Wu &S.J. Chen) R.M. Sm. and Hornstedtia sanhan M.F. Newman (Zingiberaceae) grown in Vietnam are reported. The analysis was performed by means of a gas chromatography-flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS). The essential oil of the leaves of E. yunnanensis comprised mainly germacrene D (19.2%), β-pinene (11.6%), and α-amorphene (11.2%), while that of the stems was rich in β-pinene (23.7%), 1,8-cineole (

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