laboratory scale cross flow membrane filtration unit

... 84 3.4.3 Polysaccharide and protein concentration measurement 85 3.5 Laboratory- scale cross- flow membrane filtration unit 87 3.6 Experimental protocols of RO fouling experiments 88 3.6.1 ... near the membrane surface could significantly enhance the deposition tendency of sparingly soluble salts and organics (Speth et al., 1996) When performing laboratory- scale cross- flow membrane ... in membrane performance (Bourgeous et al, 2001) Compared with membrane systems used for drinking water treatment, a much higher backwashing and/or chemical cleaning frequency and a cross- flow...

Ngày tải lên: 12/09/2015, 11:05

... health risk Membrane technology such as nanofiltration (NF) and reverse osmosis (RO) are likely to play an important role in removal of those pollutants A laboratory- scale crossflow membrane filtration ... by NF membrane However, their results were based on short-term studies using dead-end stirred cell filtration unit and thus cannot demonstrate the membrane performance in a cross- flow filtration ... electron micrographs of DL membrane surface (A) New DL membrane, (B) DL membrane after filtration of HpoA-containing solution for 24 h at pH and (C) DL membrane after filtration of HpoA-containing...

Ngày tải lên: 14/09/2015, 14:26

... E.g.: a forget-me-not, a has been, a don‟t know a Monday morning feeling, a not-to-be-missed opportunity Whenever I gamble, my horse is one of the also- ran (it is one of the horse which “also ran” ... for companionship and enjoyment or household animal, as opposed to wild animals or to livestock, laboratory animals, working animals or sport animals, which are kept for economic or productive ... II.1 Fish (noun) -> fish (verb) A fish is any aquatic vertebrate animal that is covered with scales, and equipped with two sets of paired fins and several unpaired fins Most fish are “cold...

Ngày tải lên: 11/12/2013, 23:51

... to Roach (2000:10), vowels are “sounds in the production of which there is no obstruction to the flow of air as it passes from the larynx to the lips” Vowel is a major sound in a word, which part ... Encyclopedic (1992:192), consonants are “speech sounds made by completely or partly stopping the flow of air breathed out through the mouth” In Wikipedia Dictionary, it is said that “the number ... (Roach, 2000:10), the term consonant can be defined as “sounds in which there is obstruction to the flow of air as it passes the larynx to the lips” One more collected definition from the lectures:...

Ngày tải lên: 17/12/2013, 20:37

... plasma membrane, an analysis of the interactions between the peptide and the membrane environment is crucial to understanding the exit pathway of the peptide and the manner in which it disrupts membranes ... membrane, as determined by experiments performed in vitro: one with Val24 at the membrane water interface, the other with Lys28 at the interface [4,5] The location of the peptide within the membrane ... interactions between Ab and a model membrane can lead to a more complete understanding of the membrane- aided assembly of Ab and the resulting damage to cell membranes FEBS Journal 276 (2009) 3060–3075...

Ngày tải lên: 18/02/2014, 08:20

... can meet when they study a foreign language However, due to the limitation of time and the narrow scale, the study only focuses on the most common difficulties in learning speaking skill faced by ... language 2) The introduction of authentic texts into the learning situation 3) The provision of opportunities for learners to focus, not only on language but also on the learning process itself 4) An ... need to make real communication the focus of language learning 2) Teachers should provide opportunities for learners to experiment and try out what they know 3) Teachers ought to be tolerant of...

Ngày tải lên: 28/03/2015, 09:01

... five-point scale Moreover, the four-point scale facilitated a straightforward descriptive analysis of positive and negative responses The fourth part is the assessment based on the frequency scale ... prevailing over subordination, incomplete structures, chunks of phrasal and clausal structural units In other words, loosely organized structures with conventions of “standard” language often ... preposition‟ However, these combinations are considered multi-word verbs only when they behave as a single unit Multi-word verbs, including phrasal verbs, are very common, especially in spoken English because...

Ngày tải lên: 28/03/2015, 09:36

...  Instrument three: Written questionnaire A short written questionnaire with three-point likert scale was administered to the students in the experimental group to explore their evaluative opinions ... the study (case and case 30), they cannot be rejected from the classroom as can be done in the laboratory setting Therefore, the researcher decided to assign them to the control group, but these ... Furthermore, it must be remembered that this experiment was carried out in a real-life classroom, not in a laboratory The lack of consideration of other possible factors is also a critical limitation of...

Ngày tải lên: 10/04/2015, 18:08

... manners of articulation are plosive (a complete obstruction of the air), fricative (a continuous airflow through the mouth), affricate (a slow release of the closure), nasal (the air escaping freely ... feedback that can stimulate learners to make more accurate and target-like output, creating opportunities for them to output practices Furthermore, the manner in which metalinguistic feedback contributes ... communication, law, superstition, education, technology, etc There are review puzzles after every four units in order to help students recycle key vocabulary Activities are accompanied by full-color...

Ngày tải lên: 10/04/2015, 18:08

...  Instrument three: Written questionnaire A short written questionnaire with three-point likert scale was administered to the students in the experimental group to explore their evaluative opinions ... the study (case and case 30), they cannot be rejected from the classroom as can be done in the laboratory setting Therefore, the researcher decided to assign them to the control group, but these ... Furthermore, it must be remembered that this experiment was carried out in a real-life classroom, not in a laboratory The lack of consideration of other possible factors is also a critical limitation of...

Ngày tải lên: 13/04/2015, 16:43

... collocation by Turkish EFL learners” (Unpublished doctoral dissertation), University of Reading, Reading, United Kingdom Firth, J (1957), “Modes of meaning”: In F Palmer (ed.), Papers in linguistics, pp...

Ngày tải lên: 10/08/2015, 19:47

... exposure in non-English speaking countries, most Vietnamese learners not have sufficient opportunity to improve their oral proficiency in English Therefore, language teachers play important roles ... impression of the subject In this part, you should not introduce any new information but take the opportunity to show that you have covered all the points given in the introduction “The ending needs to ... Sydes, John Allison, Jeremy Townend and Paul Emmerson which adhere to communicative approach Each unit consists of six sections: about business, vocabulary, grammar, speaking, writing and case study...

Ngày tải lên: 25/12/2015, 17:24

... Fas-associated death domain and the initiator caspases procaspase-8 and procaspase10, and formation of a membrane- bound multiprotein complex called death-inducing signaling complex [4] Death-inducing signaling ... Journal compilation ª 2008 FEBS 1933 Apoptosis by TRAIL and proteasome inihibitors H Hetschko et al Flow cytometry For cell death analysis, cells were stained with annexinV–FLUOS ⁄ propidium iodide ... the manufacturer’s instructions In all cases, a minimum of 104 events per sample were acquired Flow cytometric analyses were performed on a FACScan (BD Biosciences; Heidelberg, Germany) followed...

Ngày tải lên: 18/02/2014, 17:20

... intensity (arbitrary units) A I W Jeffrey et al 75 MCF-7 cells (141%) 50 25 (227%) (137%) B Control TRAIL IFNα IFNα +TRAIL p53/p55 full length (p53/55) p18 Band intensity (arbitrary units) p41/43 100 ... p55 forms to p41 and p43 intermediates [24], and the latter give rise to the large and small subunits of active caspase-8 [25,26] Caspase-8 in turn is responsible for initiating a cascade of activation ... c ont rol ) [35S]Met incorporation (counts per min/μg protein x 10-3) 25 100 TRAIL (ng/ml) (log scale) 75 50 25 TRAIL Z-IETD.FMK B 0 10 25 50 75 100 200 - + + - - + TRAIL 500 Control TRAIL + z-IETD.FMK...

Ngày tải lên: 19/02/2014, 06:20

... Proteins were electrotransferred to ImmunoBlotTM poly(vinylidene difluoride) membranes (Bio-Rad) using 400 mA overnight at °C Membranes were washed in Tris-buffered saline (TBS: 20 mM Tris/HCl, pH ... Na3VO4 After washing, membranes were incubated for h at room temperature with horseradish peroxidase-conjugated goat anti-(mouse IgG) Ig (Bio-Rad) in blocking buffer (1 : 3000) Membranes were washed ... Signalling pathways are generally not simple linear chains, but have several feedback mechanisms and cross- reactivity with other signal transduction pathways [10], which may lead to emergent properties...

Ngày tải lên: 19/02/2014, 16:20

... and crosslinking under UV light (Stratalinker 2400, 254 nm, 1200 J m)2; Stratagene, La Jolla, CA, USA) Hybridization to P32-labeled probes was performed as described [25] Signal intensites on membranes ... molecules in transcription complexes in the nucleus While a very short interaction with the PGI2 membrane receptor (IP) may be sufficient for triggering a signal, a much greater stability may be ... even by a PPAR-unrelated event, e.g through stimulation of the SV40 promoter and ⁄ or via the PGI2 membrane receptor IP Unless supplemented by appropriate controls, these data therefore not unequivocally...

Ngày tải lên: 07/03/2014, 12:20

... binding of Yb-bound Tf to human erythroleukemia K562 cells was determined by flow cytometry and the cross- membrane transport was studied by confocal laser scanning microscopy (CLSM) EXPERIMENTAL PROCEDURES ... K562 cellular membrane but also enters the cells DISCUSSION Fig Saturation curve of binding of FITC-Fe2-Tf (filled square) and FITC-Yb-Tf (filled red circle) to the K562 cellular membrane (A), ... Fe2-Tf LCSM offers an effective way to investigate the transport of extracellular molecules across the membranes and to identify the locations of the molecules within individual cells using appropriate...

Ngày tải lên: 08/03/2014, 09:20

... Bacteriol 181, 204–211 30 Sambrook J & Russell DW (2001) Molecular Cloning: A Laboratory Manual Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY 31 Gust B, Challis GL, Fowler K, Kieser ... then the mutant cosmid was transferred to S coelicolor by intergeneric conjugation [32,33] Double cross- over exconjugants were screened for their kanamycin sensitivity and apramycin resistance S ... E coli ET12567 ⁄ pUZ8002 bearing the cosmid with oriT and the S coelicolor DdesA mutant, single crossover exconjugants were screened for kanamycin resistance Kanamycin-resistant colonies were...

Ngày tải lên: 16/03/2014, 11:20

... the phosphate released by phosphatase treatment NADPO at 10–20 nmol was incubated for h with 0.25 units of alkaline phosphatase at 25 °C in 0.5 m Tris ⁄ HCl (pH 9.0), containing 10 mm MgCl2, to ... FprA and 0.5 mm NADP+ were incubated as described in the previous paragraph in the presence of 0.1 unit mL)1 horseradish peroxidase and 100 lm Amplex Red Peroxidase-catalyzed Amplex Red conversion...

Ngày tải lên: 16/03/2014, 11:20