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The basis of MS
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Genome wide association studies have identified > 200 susceptibility loci accounting for much of the heritability of multiple sclerosis (MS). Epstein-Barr virus (EBV), a memory B cell tropic virus, has been identified as necessary but not sufficient for development of MS. The molecular and immunological basis for this has not been established.
13p
vibransone
28-03-2024
4
1
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This study aimed at discriminating the Turkish Taşköprü garlic, possessing protected geographical indication (GI) in Turkey and GI registration from the European Union, from the other samples. For this reason, the combination of headspacegas chromatography-mass spectrometry (HS-GC-MS) analysis of the volatile organosulfur compounds (VOSCs) and two multivariate analysis techniques, namely hierarchical cluster analysis (HCA) and principal component analysis (PCA), were employed for classifying the garlic samples on the basis of their geographical origin.
12p
lyhuyenthu
31-01-2023
7
2
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The purpose of this study is to determine the content of adulterated protein enhancers, ammelide (AMD) and dicyandiamide (DCD), in animal feed according to the sample preparation process including the cleaning process by solid phase extraction (SPE) and quantification by HPLC-MS/MS. Method limit detection and quantitation values for both AMD and DCD were of 5 and 10 ppb, respectively.
17p
linyanjun_2408
23-04-2022
14
1
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Unexpected routes to synthesize functionalized benzoxocinones and heteroannulated pyranochromenes were achieved via transformations of the γ -pyrone ring in chromone-3-carboxylic acid throughout its reactions with some acyclic and cyclic carbon nucleophiles. A key part of the reaction mechanisms is discussed. Structures of the new synthesized products were established on the basis of elemental analysis and spectral data (IR, MS, and 1H and 13C NMR).
14p
langthannam
29-12-2021
5
0
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This research aims to study a process of steeping in the n-heptane, used for reducing the migration of additives contained initially in toys for babies plasticized with di-octylphtalate (DOP) based on poly (vinyl chloride) (PVC) and stabilized with epoxidized sunflower oil (ESO). Two formulations were carried out at different levels of DOP plasticizers (15% and 45%). The migration tests were conducted in the synthetic saliva in the absence and in the presence of α-amylase with or without agitation at 37° C for 1, 3, and 6 h.
9p
langthannam
29-12-2021
10
0
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Studies on the effect of different nutritional compounds on antibiotic activity revealed that the highest antibacterial activity was obtained when 1% starch (w/v) was used as the sole carbon source along with mineral trace elements. Extraction and purification of TBG19NRA1 culture supernatant led to the isolation of a pure molecule with good antibacterial activity. The compound has been identified as the cyclic polyether lasalocid A on the basis IR, MS and 13C NMR data interpretation and comparison with reference data from literature.
11p
princessmononoke
30-11-2021
7
1
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New Schiff bases were synthesized by condensation of methyl-5-(furan-2-yl)-5-oxopentanoate, methyl-4- (furan-2-yl)-4-oxobutanoate, methyl-5-(thiophene-2-yl)-5-oxopentanoate, and methyl-4-(thiophene-2-yl)-4-oxobutanoate with p-anisidine and n-butylamine. The structures of these synthesized compounds were clarified on the basis of elemental analysis, IR, 1H NMR, 13C NMR, and GC-MS spectroscopic techniques. In addition, antioxidant activity of the synthesized compounds was evaluated on the basis of DPPH radical.
28p
tudichquannguyet
29-11-2021
17
1
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The current study describes the synthesis, electrochemical, computational, and photochemical properties of octa (3-hydroxypropylthio) substituted cobalt (II) (4), copper (II) (5), nickel (II) (6) and zinc(II) (7) phthalocyanine derivatives. These novel compounds were characterized by elemental analysis, 1H, 13C NMR, FT-IR, UV-Vis, and MS. The redox behaviors of these metallophthalocyanines were investigated by the cyclic voltammetric method.
27p
tudichquannguyet
29-11-2021
8
1
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Chromatographic separation of n-hexane and ethyl acetate fraction of a crude methanol extract obtained from aerial parts of the Scorzonera aucheriana DC collected from Sivas province of Turkey yielded nine natural compounds; two new 3-caffeoyl-quinic acid analogs (1-2), one new taraxasterol oleate (3), and six known triterpenoids taraxasterol (4), taraxasterol acetate (5), ptiloepoxide (6), lupeol (7), lupeol acetate (8), and β-sitosterol (9) were characterized.
11p
tudichquannguyet
29-11-2021
4
1
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The process of thermal decomposition of sugarcane biomass consists of 4 stages. On that basis, the research conducted the pyrolysis of sugarcane biomass to collect liquid products at different temperature stages and they were analyzed by GC-MS method to determine the chemical composition. Chemical composition of pyrolysis oil through thermal decomposition of sugarcane biomass was elucidated in this paper.
9p
nguaconbaynhay11
16-04-2021
9
2
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In year 2019 may be sais as an unique year which registered rainfall of 2313 mm. Weather parameter trends of Jagdalpur (19.0854° N Latitude, 82.0183° E Longitude, elevation 552 m mean sea level) is analysed by MS – excel software package. Analysis of weather parameters viz. maximum and minimum temperature, rainfall, rainy days and relative humidity was done from 1980 to 2018 (39 years) and 2019.
7p
chauchaungayxua11
23-03-2021
15
1
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Comprehensive protein-protein interaction (PPI) maps are a powerful resource for uncovering the molecular basis of genetic interactions and providing mechanistic insights. Over the past decade, high-throughput experimental techniques have been developed to generate PPI maps at proteome scale, first using yeast two-hybrid approaches and more recently via affinity purification combined with mass spectrometry (AP-MS).
9p
viwyoming2711
16-12-2020
10
0
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Sorghum downy mildew (SDM) caused by the oomycete, Peronosclerospora sorghi, is one of the destructive diseases that afflict maize. P. sorghi infects a susceptible host, hindering its growth and altering its morphology. To understand the molecular basis of the compatibility interaction between P. sorghi and maize, a comparative proteomic approach (2D-PAGE) was employed between the mock-inoculated (control) and SDM-inoculated leaves in the susceptible genotypes of maize (UMI79 and CM500).
18p
angicungduoc5
14-06-2020
8
1
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The existing models of coconut dehusking machines are pull type and suitable for right handed operators only. Therefore sitting models (pull and push type) suitable for both left handed and right handed operators were developed and the performance of newly developed both the models of coconut dehusker was tested on the basis of output capacity and dehusking efficiency. The tests were conducted at Department of Farm Machinery and Power Engineering, Dr. D. Y. Patil C.A.E.T, Talsande, Dist: Kolhapur (MS) in Sept.2016.
10p
cothumenhmong5
17-05-2020
11
1
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Apple is one of the most popular fruit crops world-wide and its skin color is an important quality consideration essential for commercial value. However, the strategy on genetic breeding for red skin apple and the genetic basis of skin color differentiation is very limited and still largely unknown.
13p
viharuno2711
21-04-2020
10
1
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Bridelia micrantha commonly known as coastal golden leaf is a member of the family Phyllanthaceae. In preliminary studies, nine fractions, named F1- F9, were obtained by fractionating the crude methanol extract of the stem bark of Bridelia micrantha using column chromatographic techniques. The F6 fraction was found to be the most active when tested for the antibacterial activity. This study is thus aimed at investigating the effect of fractionation on antibacterial activity of F6 fraction.
18p
nguaconbaynhay3
07-02-2020
19
0
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Polypyrrole Sn(IV) phosphate, an organic–inorganic composite cation-exchanger was synthesized via sol-gel mixing of an organic polymer, polypyrrole, into the matrices of the inorganic precipitate of Sn(IV) phosphate.
9p
kethamoi1
20-11-2019
14
0
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From the leaves of Fissistigma acuminatissima growing in Vietnam, two flavonoids, catechin and isorhamnetin-3-o-rutinoside were isolated. Their structures were characterized on the basis of MS and NMR spectra data and comparison with reported data.
4p
chikychiky
11-11-2018
17
1
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Chemical investigation of the leaves of Celastrus hindsii growing in Quang Binh, Vietnam led to the isolation and structural elucidation of three triterpenes, 3-friedelanol, 3-friedelanone and canophyllol. These structures were determined on the basis of MS and NMR spectroscopic data.
4p
chikychiky
11-11-2018
36
1
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The stems of Dracaena cambodiana have been investigated for antifungal constituents, resulting in the isolation of a new steroidal saponin dracagenin A (1) together with two known components 25S-namogenin B (2) and spriroconazole A (3). Their structures were elucidated on the basis of extensive spectroscopic analysis including 1D, 2D NMR and ESI MS. The isolated compounds were evaluated for their antifungal activities. 1 and 3 exhibited inhibitory activity against Aspergilus niger at the MICs of 50 μg/ml.
6p
chikychiky
11-11-2018
24
0
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