recent advancements in liquid chromatography columns and chemistry
Synthesis of crown ether and cyclam capped beta cyclodextrin bonded silica particles and their application as chiral stationary phases in liquid chromatography
Ngày tải lên :
17/09/2015, 17:19
... Historical Development of Liquid Chromatography and Chiral Liquid Chromatography 1.1.1 Liquid Chromatography 1.1.2 Chiral Liquid Chromatography 1.2 Recent Applications of Chiral Liquid Chromatography with ... frequently encountered in modern biology, medicine and life science Initial miniaturizing efforts in LC are attributed to Horvath and co-workers in 1969 [17,18] In the late 1970s, Ishii and co-workers ... efficiency and high resolution when using as chiral stationary phases in UHPLC and CEC xix CHAPTER INTRODUCTION 1.1 HISTORIAL DEVELOPMENT OF LIQUID CHROMATOGRAPHY AND CHIRAL LIQUID CHROMATOGRAPHY...
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Recent Advances in Parallel Virtual Machine and Message Passing Interface pdf
Ngày tải lên :
22/03/2014, 15:20
... efficiently in both single-threaded and multithreaded cases Introduction With SMP machines being commonly available and multicore chips becoming the norm, the mixing of the message-passing programming ... their position in the input) are sorted in Line and named in Line using a subroutine to be discussed If all triples are unique, no recursion is necessary (Line 4) Otherwise, Line assembles the ... pDC3 the resulting tuples into the order of the input string Now, Lines 9–11 use the input string and the result of the recursion to build 5-tuples and 4-tuples that contain all the information...
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Recent Advances in the Biology, Therapy and Management of Melanoma Edited by Lester M. Davids ppt
Ngày tải lên :
23/03/2014, 14:20
... tyrosinase, the rate-limiting enzyme involved in melanin production Tyrosinase is a glycoprotein found in the melano‐ somal membrane The protein has an inner melanosomal domain, which contains ... XP Estimated incidences vary from in 20,000 in Japan to in 250,000 in the US (Robbins et al., 1974) Beginning in the first or second year of life, UVexposed skin (e.g on the face and arms) develops ... leading to DNA fragmentation [8;9] Figure depicts the intersection of intrinisic and extrinsic apoptosis and onset of extrinsic apoptosis through death receptor activation Figure Intersecting intrinsic...
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Recent Developments in Banks’ Funding Costs and Lending Rates pdf
Ngày tải lên :
29/03/2014, 01:20
... movements in foreign exchange rates ** Includes deposits and intragroup funding from non-residents Sources: APRA; RBA combination of retained earnings and sizeable share placements in late 2008 and ... debt funding and the shift in their funding mix from securitisation to deposits, which is currently a relatively expensive source of funding Banks’ Lending Rates and Margins In setting interest ... n din g c o sts an d l e n din g rate s Overall funding costs Taking into account the costs of individual funding sources noted above, and weighting them by their share of total bank funding,...
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RECENT ADVANCES IN THE PATHOGENESIS, PREVENTION AND MANAGEMENT OF TYPE 2 DIABETES AND ITS pptx
Ngày tải lên :
28/06/2014, 05:20
... the hand, resulting in improved hand function In a randomized, controlled trial, sensory re-learning in combination with cutaneous forearm anesthesia, using an anesthetic cream, EMLA® containing ... Axonal and dendritic sprouting The sprouting and elongation of new dendrites and axons is a common response to injury and cell loss at all levels in the nervous system Sprouting can also be seen in ... diabetes and fibrinolysis, including evidence for plasminogen activator inhibitor-1 as a predictor of cardiovascular risk in type diabetes Yaturu and Mousa discuss evidence for aspirin resistance in...
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RECENT TRENDS IN CYTOGENETIC STUDIES – METHODOLOGIES AND APPLICATIONS ppt
Ngày tải lên :
28/06/2014, 09:20
... assembly by binding to a high affinity site on tubulin Colchicine binding occurs in a nearly irreversible manner and exerts a conformational change in tubulin, as well as in colchicine itself ... allows washing and removing medium traces that could interfere with the subsequent action of trypsin Trypsinize attached cells in the flask using 1X Trypsin-EDTA and let stand for minutes at ... Enzymatic and mechanical procedures Culture initiation Culture harvesting and metaphases Banding techniques Freezing of viable cells The way of determining the time of harvest, colchicine use and exposure...
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báo cáo khoa học: "Recent advances in gastrointestinal oncology updates and insights from the 2009 annual meeting of the American Society of Clinical Oncology" doc
Ngày tải lên :
10/08/2014, 22:20
... using the nanoparticle formulations Insulin-like growth factor receptor (IGF1R) targeted antibodies and tyrosine kinase inhibitors are being investigated in a variety of tumor types including ... expression of secreted protein acid rich in cysteine (SPARC) and clinical outcome This regimen is currently being investigated in a randomized phase III study Promising results were also reported ... multicenter, randomized phase II trial of gemcitabine and oxaliplatin alone or in combination with biweekly cetuximab in the first-line treatment of advanced biliary cancer: Interim analysis of the BINGO...
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Báo cáo y học: "The basophil activation test by flow cytometry: recent developments in clinical studies, standardization and emerging perspectives" pot
Ngày tải lên :
13/08/2014, 13:22
... during allergic processes since prostaglandin D2 is known to be involved in allergic diseases and asthma Using a similar approach, Heinemann et al [43] examined the effects of various chemokines ... dealing with various allergens Bühring and colleagues in a recent report proposed to use both markers in the same test to increase sensitivity [32] It is supported by recent evidence showing ... molecules including deoxynucleotides and nucleotide sugars [29] In addition, E-NPP3 contains a somatomedin B-like domain and a cell adhesive motif, but their potential functions remain totally...
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Báo cáo y học: " Management of burn injuries – recent developments in resuscitation, infection control and outcomes research" pptx
Ngày tải lên :
13/08/2014, 23:20
... and fluids administered in the approach recommended by the Parkland group are frequently exceeded.[3] What is contemporary thinking about initial fluid administration in the setting of burn injury? ... administration in the setting of burn injury, monitoring of efficacy and consensus recommendations are included in recent work published in the Journal of Burn Care & Research.[12] Blumetti and ... to maintain urine output between 0.9 and 1.8 ml/kg/h (dotted line) Initial resuscitation was close to Parkland guidelines, but beginning at about 10 hours post-burn, fluid requirements increased...
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ENANTIOSEPARATION OF CHIRAL DRUGS IN LIQUID CHROMATOGRAPHY WITH ANTIBIOTIC CAPPED MACROCYCLE BONDED SILICA PARTICLES AS CHIRAL STATIONARY PHASES
Ngày tải lên :
09/09/2015, 08:12
... research in both industry and academia during the last decades Beside pharmaceutics and medicinal sciences, enantioseparation also received more and more attention in geochemistry (Eglinton and Calvin, ... mechanisms, chromatography can be further divided into gas-solid chromatography, gas -liquid chromatography, liquid- liquid chromatography, supercritical fluid chromatography, micellar electrokinetic chromatography, ... own the wisdom of thinking Beyond the overwhelming experience of reading journals, staying up for experiments, giving presentations and writing papers, it is truly a training process to learn...
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Báo cáo "DETERMINATION SULPHONAMIDES RESIDUES IN FOOD BY HIGH PERFOPvMANCE LIQUID CHROMATOGRAPHY PART 2. SEPARATION AND QUANTIFICATION SULFAGUANIDINE, SULFAMETHOXYPYRIDINE, SULFADOXINE AND SULFAMETHOXAZONE IN ANIMAL FOODSTUFFS AND FOOD PRODUCTS " pdf
Ngày tải lên :
20/03/2014, 21:20
... sulfonamides in environmental water samples using liquid chromatography coupled to electrospray tandem mass spectrometry Journal of Chromatography A 1157 (2007) 115-121 Guillermina Font Ana Juan-Garcia, ... Journal of Chromatography A 1159 (2007)233-241 SUMMARY DETERMINATION SULPHONAMIDES RESIDUES IN FOOD BY HIGH PERFOPvMANCE LIQUID CHROMATOGRAPHY PART SEPARATION AND QUANTIFICATION SULFAGUANIDINE, SULFAMETHOXYPYRIDINE, ... quantification of sulfadoxine (SDO), sulfaguanidine (SGU), sulfamethoxypyridine (SMP) and sulfamethoxazone (SMX) in animal foodstuffs (for fish, shrimp, chicken and pig) and food products (frozen...
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DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
Ngày tải lên :
22/03/2014, 14:20
... placed in a sample container in the laboratory and treated as a sample in all respects, including shipment to the sampling site, exposure to sampling site conditions, storage, preservation, and ... the sample into the solvent reservoir The water sample will drain into the cartridge, and from the exit into the suction flask Maintain the packing material in the cartridge immersed in water at ... rules and land disposal restrictions The laboratory using this method has the respons-ibility to protect the air, water, and land by minimizing and controlling all releases from fume hoods and...
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báo cáo hóa học: " Method optimization and validation for the simultaneous determination of arachidonic acid metabolites in exhaled breath condensate by liquid chromatography-electrospray ionization tandem mass spectrometry" doc
Ngày tải lên :
20/06/2014, 00:20
... and include prostaglandins (PG), isoprostanes and leukotrienes (LT) These eicosanoids were used to try to assess the lung inflammation in patients with pulmonary disease Some prostaglandins and ... Precision and accuracy The intraday repeatability was addressed by analysing Q1 and Q2 ten times in a row and on six different days resulting in a relative standard deviation for all parameters in the ... applying each inter- Results and discussion Optimization of enrichment and chromatography Increasing the fraction of solvent B as shown in Table the analytes can be eluted from the RAM Phase and...
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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
Ngày tải lên :
02/09/2015, 13:06
... Main herbal constituents contained in samples Sample Plant sources Oral liquid preparation Oral liquid preparation Oral liquid preparation Oral liquid preparation Oral liquid preparation Wine ... phase In order to suppress peak-tailing, the effects of several additives and their concentration were investigated In liquid chromatography, triethylamine was the most common additive used in analyzing ... complex because they contain many kinds of compounds The samples examined in present work included barbary wolfberry fruit, ginseng root, Chinese magnoliavine fruit, aweto, Indian bread, common peony...
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Development of ionic liquid based liquid phase microextraction, and zeolite imidazolate frameworks based sorbent phase based microextraction combined with chromatography for applications in environmental analysis
Ngày tải lên :
09/09/2015, 10:18
... Liu Qiping and many other laboratory officers in the Department of Chemistry for their kind help and assistance I appreciate the National University of Singapore for providing me the financial ... techniques are received increasing attention in the past few decades since they are critical in an analytical procedure Along with the trend in miniaturization in analytical chemistry, microextraction ... for water and urine samples and 100 times for plasma samples [107-114] MEPS can be fully automated, combing extraction and injection steps as an online sampling device by the same syringe It is...
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Identification of metabolites of meisoindigo from interspecies microsomes and in vivo biological fluids in rats by liquid chromatography tandem mass spectrometry
Ngày tải lên :
14/09/2015, 14:08
... structures of indigo and isoindigo In vitro metabolism of indirubin and its derivative, indirubin 3’-oxime in rat liver microsomes was investigated by reversed phase high performance liquid chromatography ... almost absent in the literatures and therefore, the in vitro and in vivo metabolism of meisoindigo were evaluated in this thesis Before introducing the background of meisoindigo in section 1.2, ... leukemia (CML) in China since 1979 (Institute of Hematology, Chinese Academy of Medical Sciences, 1979) However, indirubin showed poor solubility in water and patients treated with indirubin had severe...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 6
Ngày tải lên :
16/09/2015, 17:13
... behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and artificial UV lighting) ... Light intensity could prompt degradation significantly under mild alkaline conditions, while its influence was minor at higher pH (pH > 9) Furthermore, half-lives and degradation rates were obtained ... were obtained in various matrix and irradiation sources Based on kinetic studies, propoxur was found to degrade more rapidly at higher light exposure and pH Furthermore, liquid chromatography- ...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 5
Ngày tải lên :
16/09/2015, 17:13
... temperature, and 6-min microwave heating The differences between the distribution of propoxur and its transformation products in biota and soils, and additionally the difference in the 122 sample ... power setting for the microwave heating This setting was proportional to the number of samples undergoing extraction during one run Furthermore, according to previous experience with MAE and intuition, ... variables (A, B, C and D), two-variable interaction, and the level setting values of the main variables applied to aquatic animals (goldfish and tortoises) and sea lettuce are displayed in Table 5-1...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 4
Ngày tải lên :
16/09/2015, 17:13
... 3) methanol 88 An interesting result observed from Fig 4-6 is that in the same solvent, the recovery increases in going from PAHs to PCBs, and then to triazines (i.e, increasing polarity of analyte) ... respectively ** Four levels (I, II, III, IV) are obtained by combining columns C1 and C2 ***Four levels (I, II, III, IV) are obtained by combining columns D1 and D2 4.2.3.2 Experimental design for MASE ... temperature 300°C; initial oven temperature 80°C for min, increased to 200°C at a rate of 25°C/min, then maintained at 200°C for min; a second ramp 230°C at rate of 5°C/min, increased to 280°C...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 3
Ngày tải lên :
16/09/2015, 17:13
... the K and t½ in each natural water sample K increases and t½ decreases accordingly when the light intensity increases in the order of darkness, indoor lighting and sunlight This indicates that ... Irradiation darkness indoor lighting a sunlight darkness indoor lighting a sunlight darkness indoor lighting a sunlight darkness indoor lighting a sunlight darkness indoor lighting a sunlight k (h ... different pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and artificial UV light) by using LC-APCI-ITMS with selected ion monitoring mode; and (3) To investigate...
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