2 basic principles of process chromatography

... Chilamkurthi, Delft University of Technology, The Netherlands 4.1 Introduction 4.2 Basic principles of process chromatography 4.3 Applications of process chromatography in the food, ... 1.5 Cascade of extractors for extraction of solid materials One of the major advantages of SFE processes is the fractionation of extracts Multi-step separation may be performed by use of several ... energy costs of the process One of main advantages of using SCF for extraction and fractionation of substances, is that by a stepwise reduction of solvent power, fractionation of extracts can...

Ngày tải lên: 20/09/2015, 01:57

... of elements of service, characteristics of the meals served Along with the rapid growth of the tourism industry, the development of the food industry contribute to the birth of many systems of ... quality of service is seen as part of the process of consumer products cuisine 1.1.2 The industry of food and beverage in Viet Nam Culinary Vietnam is calling the method of cooking, spice blending principles ... commensurate with rank of restaurant Therefore, assessment of the quality of customer service of the restaurant is the most accurate If the customers’ perception of food service that offers restaurant...

Ngày tải lên: 05/07/2014, 10:08

... wall; EOF can provide a plug-like flow profile in contrast with the parabolic flow profile of pressure driven flow and lead to better resolution Fig 1.1 Process of silanol dissociation EOF causes ... structure of PAR Because of the transparent character of metal ions in the UV-Vis region, usefulness of PAR in the CE separation and detection of trace metal ions lies mainly in its capability of forming ... Introduction 1.1 Principles and historical perspective of Capillary Electrophoresis 1.1.1 Basic Principles .2 1.1.2 Electroosmotic Flow (EOF) 1.1.3 Modes of CE 1.1.4...

Ngày tải lên: 11/09/2015, 14:27

... tributaries of the Mekong drain the uplands of Lao PDR, which contribute 35% of the runoff Other major tributaries rise in Thailand and Cambodia, which each contribute 18% of the runoff There are ... Adoption of a Code of Conduct to reduce the impacts of future introductions of exotic species Formal Codes of Conduct adopted by countries sharing the same river or lake basin avoid the possibility of ... early development of aquaculture in the East The pace of introductions has increased in recent years (Welcomme, 1985) as part of the development of aquaculture and as a means of slowing declines...

Ngày tải lên: 14/03/2014, 08:48

... greatly stimulates the activity of PDP1 Polyamines, most effectively spermine, markedly reduce the Km values for Mg2+ of both PDP isoforms The Km of PDP2 in the absence of polyamines is very high ... portion of the 13-fold activation of PDK3 by L2 [18] is, in fact, due to preventing or reversing a decrease in activity of PDK3 undergoing self association in the absence of L2 Binding of two ... Surface residues of the L2 domain of E2 that are required for activating PDK3 and PDP1 Panels A and B show opposing sides of space-filled models of the human L2 domain The position of Lys173 (lipoylated...

Ngày tải lên: 17/03/2014, 09:20

... laboratories, departments of the Ministry of Health, the Directorate of Health Affairs in various regions of the kingdom and customs outlets The highest percentage of shortage of personnel is in pharmaceutical ... number of students 251 Adopting the Doctor of Pharmacy degree (Pharm.D.) as the sole degree that allows the practice of pharmacy in the kingdom The colleges of pharmacy that not offer the Doctor of ... for Heath Sciences The final draft of the study was reviewed and commented on by Prof Bashir Hamad Professor of Medical Education, Founding Dean of the Colleges of Medicne, Gezira University in...

Ngày tải lên: 22/03/2014, 14:20

... value  of the  cell  side  wetted function is 1. For other cases, value of the  cell  side  wetted  function  equals  to  the  ratio of the length of the wetted portion over  the total length of the cell side. After getting  ... observed advective transports of TKE, shown  in Fig. 7, is better than that for the TKE itself.  Results  of Ting  and  Kirby  [15,  16]  show  that  there  is  a  tendency  of offshore  (negative)  transport  of TKE.  ... and  the  combination  of wave‐induced  flow  and  undertow may transport TKE and suspended  sediment  offshore.  This  results  in  the  offshore‐directed  transport  of sand  during  storm ...

Ngày tải lên: 28/03/2014, 15:20

... frequency of sites of class and there is a relatively high number of sites of class The concentration of Mycenaean pottery on this island is enhanced, however, by the relative scarcity of sites of classes ... small number of vessels.21 In the Levant, some imitations of a variety of LH IIIA and LH IIIB vessels occur.22 On a somewhat larger scale, at the end of the LBII phase, a limited range of Mycenaean ... history of research by scholars interested in the archaeology of the Bible Finally, the organisation and interests of archaeological heritage and of the academic world is different in each of these...

Ngày tải lên: 11/06/2014, 13:13

... proof of the segregation of a major gene, if any, would then be the straightforward outcome of the inspection of the distribution of this quantitative variable considered as an expression of ... other hand, in most of the genetic analyses of this condition so far published, the distribution of the animals into phenotypic classes was based on a subjective appraisal of the conformation ... estimations of the gene effect and of the dominance deviation for this phenotypic criterion are then possible through the fitting of the appropriate mathematical model Partial accounts of this experiment...

Ngày tải lên: 09/08/2014, 22:23

... Comparison of exon SSR densities A comparison of the SSR densities (for SSRs of period to 10) in the coding (exon) regions of Arabidopsis and rice Figure Comparison of 5'-UTR SSR densities Comparison of ... Comparison of 3'UTR SSR densities Comparison of 3'UTR SSR densities A comparison of the SSR densities (for SSRs of period to 10) in the 3'-UTR regions of Arabidopsis and rice 7.6 (16.1) GO categories of ... Total lengths of the studied regions and the amounts of SSRs therein Densities of the most abundant SSR (mono- and dinucleotide) types in different regions Number of base pairs Number of SSRs Density...

Ngày tải lên: 14/08/2014, 16:21

... area of origin which is defines on the basic of either of the extent of national territory or a linguistic criterion can not constitute a geographical area capable of justifying an indication of ... geographical origin of PDO is stricter than that of PGI 121 Opinion of AG Colomer in joint case C-465/02 and C-466/02, Federal Republic of Germany and Kingdom of Denmark v Commission of the European ... geographical conditions of a natural or human character or the combination of thereof; Article 10, 11, 12, 13 of Decree 54/2000/ND-CP provide the protection of GI but there is no definition of a GI 215 See...

Ngày tải lên: 18/08/2014, 04:27

... area of origin which is defines on the basic of either of the extent of national territory or a linguistic criterion can not constitute a geographical area capable of justifying an indication of ... geographical origin of PDO is stricter than that of PGI 121 Opinion of AG Colomer in joint case C-465/02 and C-466/02, Federal Republic of Germany and Kingdom of Denmark v Commission of the European ... geographical conditions of a natural or human character or the combination of thereof; Article 10, 11, 12, 13 of Decree 54/2000/ND-CP provide the protection of GI but there is no definition of a GI 215 See...

Ngày tải lên: 18/08/2014, 04:28

... maybe important in the economics of the process and may influence the amount of hydrogen peroxide to be used in the process Based from the results of this phase of the experiment, the optimum H2O2 ... concentration of about 2800 ml (of the 30%H2O2 solution) per liter and initial PCB concentration of about 40 ppm The initial pH of the solution also has a significant effect on the rate of degradation of ... Effect of pH The results of the degradation of PCBs at different pH values are shown in Figs and Even when the initial pH of the solution was adjusted to 10, a drastic decrease in the pH of the...

Ngày tải lên: 05/09/2013, 09:08

... activities of nitrite oxidizing bacteria - 31 - Journal of Water and Environment Technology, Vol.5, No.1, 2007 Figure Behavior of nitrate and nitrite at the end of the aerobic tank Behavior of Nitrobacter ... with ethanol at a final concentration of 10%, then transported to the laboratory of UT at 4oCstored Then, each of the samples were divided into two One of them was for DNA extraction and was ... Operation of the reactor A bench-scale continuous activated sludge process was operated with simulated coak-oven from October 2002 to September 2003 The effective reactor consisted of 45L of anoxic...

Ngày tải lên: 05/09/2013, 09:38

... Model of process approach Since it lays the emphasis on the writers’ writing process, the process approach has been widely accepted The focus on the writer inherent in the development of process ... a letter of complaint Writing a letter of confirmation Writing a formal letter of giving direction In sum, the result of the first section of the questionnaire has revealed that most of the teachers ... unpredictability of writing (Tribble, 1996:37) In the process approach, the teaching of writing has begun to move away from a concentration on the written product to an emphasis on the process of writing...

Ngày tải lên: 07/09/2013, 13:51

... concentrations of individual components were varied as indicated for the determination of Mg2+ and pH dependent rAsPPase activity The amount of Pi liberated from the hydrolysis of PPi during the course of ... presence of increasing concentrations of inhibitors for 10 days, and the number of molting larvae was determined Molting was manifested by shedding of the L3 cuticle Results Identification of cDNA ... molting process of A suum L3 to L4 in vitro, virtually none had been characterized in relation to the actual mechanism of the molting process in this roundworm [56] The basic structure of the...

Ngày tải lên: 20/02/2014, 11:20

... and global levels Globally, 69 percent of all cereal area is rainfed, including 40 percent of rice, 66 percent of wheat, 82 percent of maize and 86 percent of other coarse grains Worldwide, rainfed ... runoff These methods are often used for medium water demanding crops such as maize, sorghum, millet and groundnuts (Habitu and Mahoo 1999) Rooftop runoff collection involves the collection of ... order to hold the runoff in the cultivated area Maize, sugarcane and vegetables are often grown using hillside sheet or rill runoff systems One of the predominant characteristics of external catchments...

Ngày tải lên: 09/03/2014, 00:20

... result of metabolic transformation The process of bioaccumulation is described in more detail in recent reviews [7, 21] Model Development: Bioaccumulation is the result of competing processes of ... Weight of organism Lipid content of organism Lipid content of lowest trophic level organisms Concentration of particulate organic carbon Concentration of dissolved organic carbon Fraction of freely ... viewed as a result of the combined process of the feeding rate, which is based on the bioenergetics of organism weight W (kg) and temperature T (8C), and of the diffusion rate of the chemical across...

Ngày tải lên: 22/03/2014, 14:20

... predominantly in neurons of the NI, the function of this peptide has been assessed based upon anatomical studies of the NI at the neuronal level [14,15] The NI is composed of two subdivisions, the ... the role of relaxin-3 in regulating body weight and metabolism Actions of relaxin-3 at the hypothalamo-pituitarygonadal (HPG) axis Fig Effect of intracerebroventricular administration of relaxin-3 ... study of neurons in these 4994 Recently, a role of relaxin-3 in regulation of the HPG axis was reported in that intracerebroventricular (5 nmol) and intra-PVN (540–1620 pmol) administration of relaxin-3...

Ngày tải lên: 29/03/2014, 21:20