high performance anion exchange chromatography of polysia chains
Preparative isolation and purification of six volatile compounds from essential oil of Curcuma wenyujin using high-performance centrifugal partition chromatography doc
... total of mg of curdione (1), mg of curcumol (2), 10 mg of germacrone (3), 18 mg of curzerene (4), mg of 1,8-cineole (5) and 17 mg of b-elemene (6) from the essential oil (300 mg) in 2.4 mL of the ... increasing the volume ration of ethyl acetate result in the increasing of the K values of curdione (1), curcumol (2) and germacrone (3), and the decreasing of the K values of curzerene (4), 1,8cineole ... temperature Both of the upper and the lower phases were degassed for 30 by ultrasonication before use Aliquots of 300 mg of the essential oil were diluted by 2.4 mL of the mixed solution of lower phase...
- 7
- 502
- 0
High performance liquid chromatographic analysis of urinary catecholamines employing amperometric detection.pdf
... amount of internal standard, and performed acetic acid extractions from the alumina instead of used by the original authors Adjust the pH of mL of urine to 3.0 with N sodium hydroxide Add 15 mL OF ... mL of 0.7 M sulfuric acid and allow to drain Elute the catecholamines with mL of M ammonium sulfate solution Add 100 ~L of 4% thioglycolic acid and 500 ~L of M Tris buffer pH 8.6 Add 100 mg of ... difference in both the mean percentage recovery of dopamine and the mean peak height ratio of dopamine to internal standard Use of the mean factor of 0.7517 in the above may under or o v e r e...
- 7
- 407
- 0
High-Performance Thin-Layer Chromatography(HPTLC)
... High- Performance Thin-Layer Chromatography (HPTLC) ManMohan Srivastava Editor High- Performance ThinLayer Chromatography (HPTLC) Editor ManMohan Srivastava Professor Department of Chemistry ... dramatically increased the use of thin-layer chromatography in the form of HPTLC Today, thin-layer chromatography has been successfully hyphenated with high- performance liquid chromatography (HPLC), ... been devoted to the coupling of high- performance thin-layer chromatography (HPTLC) with spectrometric methods It is because of the robustness and simplicity of use of HPTLC and the need for detection...
- 414
- 4,151
- 0
Báo cáo Y học: Functional studies of the Synechocystis phycobilisomes organization by high performance liquid chromatography on line with a mass spectrometer docx
... typical positive ion spectrum of a single protein consists of a series of peaks, each of which represents a multiply charged ion of the intact Injection of the total mixture of phycobilisomes from Synechocystis ... of phycobilisomes In a recent paper the effect of UV-B irradiation on the isolated phycobilisomes of Synechococcus sp PCC 7942 showed photodestruction of both a- and b-phycocyanins, but not of ... composition of energy-transferring complexes (tripartite units) forming the periphery of the phycobilisomes Eur J Biochem 91, 57–63 14 Zolla, L & Bianchetti, M (2001) High- performance liquid chromatography...
- 9
- 477
- 0
Báo cáo y học: "Quasi-MSn identification of flavanone 7-glycoside isomers in Da Chengqi Tang by high performance liquid chromatography-tandem mass spectrometry." ppsx
... retention time of isonaringin would be less than that of naringin An extracted ions chromatography (EIC) of m/z 579.00 and m/z 609.00 to demonstrated that the peaks at retention times of 9.3 and ... ions The comparison of the spectra of quasi-MS/MS and of quasi-MS/MS/MS may yield the quasi-third order precursor ions The quasi-MS4 spectra may be obtained through collision of the ions with argon ... Preparation of stock solutions Stock solutions of neohesperidin and naringin were prepared at the concentration of 1.0 mg/ml in methanol and water (45:55) and stored at 4°C Stock solution of hesperidin...
- 10
- 297
- 0
Báo cáo y học: "Quality evaluation of mycelial Antrodia camphorata using high-performance liquid chromatography (HPLC) coupled with diode array detector and mass spectrometry (DAD-MS)" pps
... shows Page of the chromatographic profile of the water extract of mycelial AC Comprehensive chemical profile of AC The appropriate solvent should be used to extract as many groups of representative ... samples Sample preparation and chromatography For the chromatographic profile of water extracts, 0.1 g of the sample was accurately weighed and extracted in ml of Milli-Q water under ultrasonication ... the full profile of nucleosides and nucleobases in AC can be useful in developing a fingerprint An extensive determination of the nucleoside and nucleobase profiles in the water extract of AC was...
- 6
- 312
- 0
Báo cáo y học: "Comparison of raw and processed Radix Polygoni Multiflori (Heshouwu) by high performance liquid chromatography and mass spectrometry" pptx
... value than R-RPM [31] In recent years, high performance liquid chromatography (HPLC) and gas chromatography (GC) have been employed to determine the level of anthraquinones in Radix Polygoni Multiflori ... long-term use of high dosages (40 g/kg/day) by intragastric administration However, no toxic or side effects were found when P-RPM was used at the dosage of 22 g/kg/day which is 10 times of the normal ... http://www.cmjournal.org/content/5/1/29 Page of Figure HPLC fingerprints of R-RPM and its corresponding P-RPM from various sources in China Table MS data of major identified/unknown compounds in the HPLC chromatograms of R-RPM...
- 9
- 412
- 0
Simultaneous determination of sildenafil, vardenafil and tadalafil as forbidden components in natural dietary supplements for male sexual potency by high performance liquid chromatography–electrospray ionization
... areas of the standard compounds against the corresponding concentrations The limit of detection (LOD) of UV detection and MS–SIR was evaluated as the mass giving a signal equal to three times of ... ESI probe and quadrupole analyzer The control of system and data acquiring was performanced with Masslynx3.5 workstation (Waters) The standards of sildenafil and tadalafil were obtained from Hunan ... Vardenafil (>98%, HPLC) was prepared in this laboratory on Waters preparative liquid chromatography of Prep Fig The structure of the investigated drugs X Zhu et al / J Chromatogr A 1066 (2005) 89–95 91...
- 7
- 368
- 0
Tài liệu Experiences in Design and Implementation of a High Performance Transport Protocol doc
... reach 90% of the link capacity, independent of BDP • Satisfies max-min fairness if all the flows have the same end-to-end link capacity – Otherwise, any flow will obtain at least half of its fair ... Throughput (Mbps) 80 70 60 50 40 30 20 Number of UDT flows 10 Stability • Stability index of UDT and TCP – Stability: average standard deviation of throughout per unit time – 10 UDT flows and ... burst, which can cause packet loss: even distribution of processing • Minimize CPU utilization Loss Processing • On high BDP networks, the number of lost packets can be very large during a loss event...
- 32
- 580
- 0
Tài liệu Int’l High Performance Network Infrastructure of Korea doc
... IPv6 Based High Performance Multimedia Conferencing over the APII Testbed KR & US, Development of Distributed Technique and Methodology of International Collaboration for the Analysis of Artificial ... Korea, A Study on the Construction of the MPLS Testbed(L-bone) on KOREN and the Development of the MPLS Application Services KR & JP, Applications of APII for High Energy Physics KAIST & CRL, Multicast ... five objectives of APII were defined 1) construction of information infrastructure 2) technological cooperation 3) free flow of information 4) human resources development 5) creation of policy and...
- 30
- 362
- 0
Understanding High Performance Work Systems: The Joint Contribution of Economics and Human Resource Management pptx
... final section provides conclusions High Performance Work Systems Characteristic Features High Performance Work Systems, sometimes known as high involvement or high commitment organizations, are ... basis of these types of findings that Pfeffer (1998: 32) concludes that “substantial gains, on the order of 40 percent or so in most of the studies reviewed, can be obtained by implementing high performance ... consistent with the use of low skill, low wage 18 workers (ibid: 45) The existence of and temptation of this low wage path is another obstacle to the diffusion of HPWS Conclusions High performance work...
- 22
- 613
- 0
Hệ thống sắc ký lỏng hiệu năng cao (HPLC - High Performance Liquid Chromatography ) docx
... Pha động : dùng cho loai dung môi không phân cực hay phân cực : Methanol,Benzen,Acetonitril,Chlorofoc Phần III : Chọn Điều kiện sắc ký III.1 : Lựa chọn pha tĩnh Cột pha đảo ( RP) : ( Silicagel...
- 50
- 1,554
- 7
The Future of High Performance Database Processing
... High- Performance, High- Reliability Implementation of SQL," Workshop on High Performance Transaction Systems, Asilomar, CA, September 1987 [TAND88] Tandem Performance Group, "A Benchmark of Non-Stop ... no economy of scale At best, one can expect linear speedup and scaleup of performance and price /performance Fortunately, shared-nothing database architectures achieve this near-linear performance ... Dataflow Approach to SQL Software Terabyte online databases, consisting of billions of records, are becoming common as the price of online storage decreases These databases are often represented and...
- 26
- 337
- 0
high performance computing in science and engineering '10 transactions of the high performance computing center, stuttgart (hlrs) 2010
... carried out by extensions of the software package ESPResSo (An Extensible Simulation Package for Research on Soft matter) One of the programs advantages is its high performance MPI-parallelisation ... generation of HPC systems at the GCS Since the installation of the IBM Blue Gene/P at NIC/JSC in May 2009 – the first phase of the HPC Tier-0 resources – the GCS provides the most powerful high- performance ... determination of Δsp (K) as a function of the starting point of the fitting range τstart with the covariance matrix of the Green’s function taken into account Further details on the nature of this intermediate...
- 619
- 1,447
- 0
Báo cáo hóa học: " Research Article Development and Evaluation of High-Performance Decorrelation Algorithms for the Nonalternating 3D Wavelet Transform" pdf
... improve the overall performance of the nonalternating classic algorithm, in terms of the processing time, speed-up, and the quality of the signal 2.3 GOF-based 3D-WT One of the major challenges ... disadvantage is the higher number of samples to process at each level (except the first level) because of the higher size of low frequency bands However, we will show that the use of a proper workload mechanism ... successive highpass and lowpass filtering The lowest resolution band includes the high- magnitude approximation coefficients of the signal Most of the energy is captured by those coefficients while most of...
- 11
- 443
- 0
Báo cáo hóa học: " High-Performance Wireless via the Merger of CI Chip-Shaped DS-CDMA and Oscillating-Beam Smart Antenna Arrays" potx
... antenna arrays of [3, 4, 5, 6] to DS-CDMA systems with CI chip shapes (CI/DS-CDMA) of [9, 10, 11, 12, 13] This enables (1) very high capacity via the merger of SDMA (directionality of the antenna ... CI/DS-CDMA); and (2) very high performance via the construction of receivers that exploit both transmit diversity and frequency diversity We focus on the performance benefits of the proposed merger ... offers no improvements in the performance of CI/DS-CDMA system) This work highlights the performance benefits that can be achieved by small oscillations in the beam pattern of the smart antenna array...
- 8
- 185
- 0
This article appears in the February 2010 issue ofThe journal of high-performance potx
... economies of Brazil, Russia, India and China—to another wave of high- growth countries, including South Korea, Mexico and Malaysia Outlook 2010 Number Accenture’s research shows that highperformance ... drivers of this new phase of globalization in its 2007 study titled “The Rise of the Multi-Polar World.” In putting together the Multi-Polar World Index, we compared the relative performance of economies ... extractive industries and produce higher levels of carbon dioxide emissions However, Norway is a good example of how a balance can be achieved: It is one of the most active offshore oil producers in...
- 11
- 237
- 0
This article originally appeared in the 2012, issue ofThe journal of high-performance ppt
... flexibility of the work environment to what sorts of devices employees can use to their work Outlook 2012 Number For traditional managers, opinionated, high- energy digital talent—often part of the ... but start small, using the measure-test-learn/proof -of- concept techniques favored by the likes of Google and Facebook, amplifying the impact of digital evangelists around the company as they ... and monetize a wealth of data on customer driving habits Even more significant is the rapid shift of the technological balance of power toward the consumer At the turn of the millennium, companies...
- 6
- 259
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các nguyên tắc biên soạn 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 thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu 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 mômen quay m 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