analysis of volatile compounds in the headspace of rice using spme gc ms
RESEARCH ON THE CHANGE OF 2-AP AND OTHER VOLATILE COMPOUNDS IN PROCESSING BUN FROM RICE
... Investigating the changes of 2-AP and other volatile compounds of rice in Bun processing Table The volatile compounds in non-soaking and 12 hours soaking of Khao Dawk mali recorded by GCMS N 12 hours ... section in this paper b Volatile compounds analysis by SPME coupling with Mass Spectrometry (SPMEMS) SPME fiber was directly introduced in the GC/ MS injector operating with splitless mode for minutes ... Research on the Change of 2-AP and Other Volatile Compounds in Processing Bun from Rice coupling with GC and GCMS SPME/ GC enables for estimation of 2-AP low concentration like aromatic rice The SDE...
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BÁO CÁO "RESEARCH ON THE CHANGE OF 2-AP AND OTHER VOLATILE COMPOUNDS IN PROCESSING BUN FROM RICE" doc
... Investigating the changes of 2-AP and other volatile compounds of rice in Bun processing Table The volatile compounds in non-soaking and 12 hours soaking of Khao Dawk mali recorded by GCMS N 12 hours ... section in this paper b Volatile compounds analysis by SPME coupling with Mass Spectrometry (SPMEMS) SPME fiber was directly introduced in the GC/ MS injector operating with splitless mode for minutes ... Research on the Change of 2-AP and Other Volatile Compounds in Processing Bun from Rice coupling with GC and GCMS SPME/ GC enables for estimation of 2-AP low concentration like aromatic rice The SDE...
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Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area potx
... reproduced using the detailed chemistry of the MM A sensitivity test was also performed by including the alcohols, methanol and ethanol, in one of the simulations and excluding them in another These ... altitude upon return into the MCMA The higher mixing ratios of MTBE at the beginning and the end of the flights were obtained during transects over the city In addition to the identification with ... further reduction of the boundary layer height in the morning together with some contribution from traffic and industry during the early morning before the boundary layer has expanded During the...
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Báo cáo khoa học: First evidence of catalytic mediation by phenolic compounds in the laccase-induced oxidation of lignin models ppt
... pH dependence of the Ep of sulfonephthaleins, and, if any, whether it proceeded in the same direction as the pH dependence of the sulfonephthalein mediators in Table By increasing the pH (from ... charge of the anion onto the adjacent quinoid ring (see Fig 2) Analogously, delocalization of the unpaired electron of the corresponding phenoxy radical onto the quinoid ring would enhance the survival ... UV-VIS CHEMSTATION software The rate of phenol red oxidation is expressed as the initial rate of depletion of the absorption at the wavelength followed (e.g DA420Æ min)1), in keeping with the literature...
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báo cáo khoa học: " Bioaccumulation and toxicity of selenium compounds in the green alga Scenedesmus quadricauda" pps
... [33] In Chlorella zofingiensis the accumulation of boiling-stable proteins and the increased activities of the antioxidant enzymes suggested that these compounds were involved in the mechanisms of ... to an increase of a selenomethionine (29% of SeMet in the case of selenate and 41% of SeMet in the case of selenite) The increasing toxicity was also accompanied by an increase in thioredoxin reductase ... presence of selenite than in the presence of selenate (Figure 7A) Similarly the TR activity increased in the strains SeIV and SeVI when grown in the presence of Se compounds, to which they were...
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Characterization of volatile compounds in selected citrus fruits from asia
... present in the fruit Other vitamins present in citrus juices in various quantities include thiamine, riboflavin, niacin, pantothenic acid, inositol, biotin, vitamin A, vitamin K, pyridoxine, paminobenzoic ... characterization of compounds, which is lacking in other GC detectors (Chaintreau, 1999) In a GC/ MS system, after the compounds are separated in the GC capillary column, the analytes are then ionized by either ... streams It can also be coupled with other detectors such as MS or FID for identification of the compounds The main principle of GC- O is the involvement of the human nose as the detector to sniff the...
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Screening of mycosporine like compounds in the dermatocarpon genus phytochemical study of the lichen dermatocarpon luridum (with ) j r laundon
... glycine and mycosporine taurine are oxo-mycosporines), MAAs from marine organisms are imine derivatives of mycosporines which contain a cyclohexenimine ring (imino-mycosporine) linked to an amino ... characteristics of oxo- and imino-mycosporines In our study, the use of mycosporine-like compounds is preferred to mycosporines and MAAs as these terms imply to know the origin of the molecules Mycosporine-like ... mycosporines to confirm the presence of such compounds in chlorolichens and to have a better understanding of their biogenesis in lichens Due to occurrence of mycosporines in the four fresh species investigated...
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Tài liệu Engineering Mechanics - StaticsChapter 1Problem 1-1 Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m/ms (b) μkm (c) ks/mg (d) km⋅ μN Units Used: μN = 10−6N kmμkm = 109−6Gs = 10 s pptx
... Problem 2-18 If the tension in the cable is F1, determine the magnitude and direction of the resultant force acting on the pulley This angle defines the same angle θ of line AB on the tailboard ... determine the orientation θ of the third chain,measured clockwise from the positive x axis, so that the magnitude of force F in this chain is a minimum All forces lie in the x-y plane.What is the ... permission in writing from the publisher Engineering Mechanics - Statics Chapter Problem 1-4 Represent each of the following combinations of units in the correct SI form: (a) Mg /ms, (b) N/mm,...
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Volatile Organic Compounds in the Nation’s Ground Water and Drinking-Water Supply Wells pdf
... well as in the synthesis of other organic compounds VOCs also are used in the dry cleaning of clothing, in refrigeration units, and in the degreasing of equipment and home septic systems VOCs ... and other THMs are by-products of the chlorination of drinking waters and wastewaters, and the disinfection of domestic and public wells These compounds also may be present in the effluent of septic ... frequencies of the THMs in well samples, and the common occurrence of mixtures of THMs in public well samples, indicate that waters with a history of chlorination and that contain these compounds...
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Báo cáo nghiên cứu khoa học " Computing vertical profile of temperature in the SOUTH-China SEA using Cubic Spline functions " docx
... ) 3hk (9) (10) The solution of the problem is assumed to be exist and unique The main difficulty in the setting up of the interpolation problem using spline function is to find the right boundary ... methods, the traditional linear interpolation and the interpolation using cubic spline functions, we can see the advantage of the later one The cubic spline functions give smoother curve of profiles ... to decrease as the depth increases However the analysis of the vertical profile of temperature at these points shows the existence of the strongly mixed layers At these points, the temperature...
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elements and their compounds in the environment occurence analysis and biological relevance
... slightly changed title influencing the length of the whole text, the organization of the introductory and the analytical part as well Subsequently the final working phase started in 2002 This updated ... Important Compounds, and Uses 1116 Inorganic Tin Compounds 1116 Organotin Compounds 1116 Distribution in the Environment, Foods, and Living Organisms 1117 Contamination of the Environment 1117 Inorganic ... 6.2.2 Introduction 101 Terrestrial Indicator Plants of the Elemental Load 102 The Element Content of Several Plant Species on the Same Site 103 Influence of Geological Origin of the Site on the...
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Báo cáo khoa học: " Comparison of sufentanil with sufentanil plus magnesium sulphate for sedation in the intensive care unit using bispectral index" ppsx
... impedances increased to the extent that electroencephalographic evaluation was impaired The degree of sedation was measured continously using BIS monitoring Patients were maintained at BIS levels in the ... and bilirubin, alanine aminotransferase and creatinine (Vitalab Flexor, Dieren, The Netherlands) were determined at baseline (15 before start of the study), immediately after sedative infusion ... have been raised regarding the use of BIS in the ICU concerning the widespread use of opioids (which reduces the validity of BIS) [15,16], interpretation difficulties in neurological diseases...
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Báo cáo y học: "Tiling microarray analysis of rice chromosome 10 to identify the transcriptome and relate its expression to chromosomal architecture" pptx
... representing the physical length of chromosome 10 is shown at the bottom of the panel The arrowhead delimits the division of domain I and domain II as indicated in the text Note that the centromere ... during array design (Figure 6a) To further examine the two domains, colinearity of the CG models in chromosome 10 of japonica and indica rice was calculated Mapping chromosomal positions of corresponding ... Distribution of hybridization rate in the exonic and intronic regions of rice chromosome 10 Hybridization rate (HR) is calculated as the ratio of the number of signal probes against the total number of interrogating...
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3 carbon isotope discrimination in roots and shoots of major weed species of southern u s rice fields and its potential use for analysis of rice–weed root interactions
... species including barnyardgrass are problematic in rice fields in the southern United States (Smith 1988), but the prospects of using 13C isotope analysis to evaluate their root interactions with rice ... is the total carbon mass in the root sample, Mc1 is the carbon mass of the root, and Mcs is the carbon mass of the soil These carbon masses also can be expressed as the product of (total mass of ... Lemont rice were usually similar to those in indica PI 312777 rice, but shoot d13C levels in the greenhouse were 4% (or 1.2%) lower in PI 312777 than in Lemont The d13C levels in rice in the field...
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DISTRIBUTION OF THE LASER INTENSITY AND THE FORCE ACTING ON DIELECTRIC NANO PARTICLE IN THE 3d OPTICAL TRAP USING COUNTER PROPAGATING PULSED LASER BEAMS
... Here n2 is the refractive index of the surrounding n2 cw0 (π) τ medium From the definition of the Pointing vector, we can readily obtain the intensity distribution for the left PGB as follows: ... w0 is the spot radius of the beam waist at the plane z = 0, ρ is the radial coordinate, x is the unit vector of the polarization along the x direction, k = 2π λ is the wave number, ω0 is the carrier ... other axis through the origin of trap This means that the stable region is a sphere, in whose surface there are maximum centripetal forces In every cross-section through the origin of trap, the...
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a contrastive analysis on adverbial clauses in the two languages
... Non-finite adverbial clauses of time Instead of using a finite clause, we can use non-finite adverbial clauses including : ing clauses and ed clauses Despite the common position at the beginning of ... clauses of contrast, the information in the first clause of the sentence is in strong contrast to or is the direct opposite of the information in the second clause In such a sentence can be introduced ... of the superordinate clauses depends on the intention of the speaker If he focuses on the reason of the event, the reason clause is put finally If he wants to lay emphasis on the effect of the...
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Báo cáo lâm nghiệp: "Variation in wood volatile compounds in a mixed oak stand: strong species and spatial differentiation in whisky-lactone content" pptx
... the local environment (ecological zones, as defined in previous careful ecological surveys of the stand) affects the amount of any volatile compounds Furthermore, mean ring width, an index of the ... Proportion of cis whisky-lactone as a function of total whisky-lactone of the variation in wood volatile compounds of the two European oaks used by the barrel industry to age wines and alco- The bimodal ... each isomer is made at the expense of the formation of the other, implying that their synthesis is not independent, despite the fact that both isomers covary positively in the complete sample (i.e.,...
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báo cáo khoa học: " Analysis of rice glycosyl hydrolase family 1 and expression of Os4bglu12 β-glucosidase" potx
... rice in the Monsanto Rice Genome Sequencing Project, the Torrey Mesa Research Institute and GenBank at NCBI and the indica rice sequences of the BGI as the starting point to examine the sequences ... internal bond in a purine ring, rather than a glycosidic linkage [7,9-11] In addition, many enzymes in this group are capable of releasing multiple kinds of sugars from aglycones, such as isoflavonoid ... [22] The slightly larger size of the family in Arabidopsis may be due to the presence of myrosinases, which are not found in rice, and a larger number of pseudogenes The large size of both rice...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose