analysis of surfactants in environmental samples by chromatographic techniques

... and an analysis based on the snake’s capture location in different regions of Costa Rica Using tryptic digestion, MALDI-TOF mass fingerprinting analysis and aminoacid sequencing by MALDI-TOF submitted ... placed in test tubes containing 200 µL of distilled water for the pH reading after hours of rest Next, the pH gradient determination graph was plotted The remaining gel containing the samples ... co-purification of a lectin (BJcuL) and a phospholipase A2 (BthTX-1) using a immunoaffinity resin containing antibodies produced against the crotoxin 20 mg of crotoxin was solubilized in coupling buffer (sodium...

Ngày tải lên: 31/08/2014, 08:57

... resulting in irregular folds or polypoid projections into the lumen (Fig 2) Cystic glands were variable in size and were lined by densely packed epithelium that was usually compressed by retained ... and sexual behavior in female Macaques J Clin Endocrinol Metab 2004, 89, 2998-3006 Weikel JH Jr, Nelson LW Problems in evaluating chronicol toxicity of contraceptive steroids in dogs J Toxicol ... Significant changes in the structure of the canine endometrium are associated with degeneration of luminal epithelium, cystic endometrial hyperplasia, pyometra and adenocarcinoma [1,6] The basic...

Ngày tải lên: 07/08/2014, 18:21

... teaching in reading lessons This can be achieved by holding seminars and professional meetings, in which teachers share their experience in working with 34 cohesion and reading teaching Creative techniques ... meanings in the text (Treiman, 2001) In this sense, top-down reading strategies contain predicting, inferring, and focusing on meanings (Grabe 1991) Reading is actually ―a psychological guessing ... and linguists have presented different definitions on the concept of reading, ranging from the simple to complicated ones According to Durkin (1993: 37), reading is ―intentional thinking during...

Ngày tải lên: 28/03/2015, 09:05

... turn-taking conversations 2.4 The nature of speaking 2.4.1 Definition of speaking Florez (1999) defined speaking was ‘an interactive process of constructing meaning that involves producing and ... way of absorbing, processing and retaining new information and skills - Motivation in L2 learning: can be defined as a combination of effort and desire to achieve a goal of language learning ... effectiveness of techniques in teaching and learning process in term of students’ spoken interaction in EFL classroom 1.6 Organization of the study: This thesis is divided into five chapters: Chapter 1, introduction,...

Ngày tải lên: 18/12/2013, 10:08

... selected? Modelling Issues -What tools, information we use? 4.5 Data Integration Requirements of Government and MARD Development of Forest Monitoring and Information System (FOMIS) by integrating RS, ... strengthening cpacity for forest inventory including application of remote sesing imagery; 1991 – 1995: conducted 1st cycle of NFI with the use of Landsat TM to make forest cover maps at provincial ... (physical and political aspects) Conventional techniques: time-consuming and costly; Insufficient capacity: in collecting, analyzing, synthesizing and reporting information, especially at local levels;...

Ngày tải lên: 24/01/2014, 03:20

... encoding/decoding; † Interleaving/de-interleaving: there can be two levels of interleaving before and after channel multiplexing; † Rate matching/de-matching; † Multiplexing/de-multiplexing; and, ... function of the TCC may be absorbed into the DSP by either replacing it with code in a faster, lower power DSP, or by absorbing the function of the TCC into the core of the DSP and giving it a ... number of services, number of strong cells in the vicinity, characteristics of the wireless channel, e.g number of multipaths, etc The despread unit includes despreading of all channels including...

Ngày tải lên: 06/03/2014, 12:20

... public, be it in developed or developing countries Aquaculture development needs increasingly to take into account environmental impacts It is in this regard that maintaining and sustaining the environment ... the level of inbreeding in the population An example of positive assortative mating may be the fact that in human populations, individuals more often than at random select individuals of the opposite ... number of different ways in which DNA can be modified by mutations, from simple base-pair substitutions involving individual nucleotides to changes in whole blocks of DNA, to loss or gain of a sequence...

Ngày tải lên: 14/03/2014, 11:18

...  Engaging communities in child health will lead to detecting and initiating treatment of sick children  Increase competency in FP counseling in addition to assuring privacy of counseling at ... graph showing whether the indicator went up or down It should also include annotations pointing the time of main interventions that lead to the increase, or decrease, of the value of the indicator ... sustaining the gains and institutionalizing the successful changes tested by collaborative improvement Such involvement of policy makers can facilitate the following:  Incorporating parts of the...

Ngày tải lên: 23/03/2014, 06:20

... Location Based Information 19.5 Using Devices to Summon Information 19.6 Pointing to the Real World 19.7 Pointing Greatly Simplifies the User Interface 19.8 Uses of Pointing 19.9 Software Architecture ... number of services, number of strong cells in the vicinity, characteristics of the wireless channel, e.g number of multipaths, etc The despread unit includes despreading of all channels including ... are separated by more than one chip interval appear uncorrelated Maximal Ratio Combining (MRC) is the process of combining such paths to exploit time diversity against fading and increase the...

Ngày tải lên: 18/04/2014, 12:06

... of community in this process, the Training courses were organized in all of pilot communes The method of training is mainly learning by doing the practical exercise The trainees of each training ... Tuyen Hoa district Quang Binh province Temperature Rainfall Spring rice 10 Harve sting Tending Planting Disease Stem disease, yellow leaf Winter tending harvesting Plantin g Disease Stem disease, ... Double ranking pripority ranking by using matrix - Wealth ranking methods of Ranking for priority; Double ranking; Direction matrix ranking are similar: Priority ranking allows PRA to determine major...

Ngày tải lên: 26/05/2014, 23:30

... thinking Because of the synthesis impairment, acetylcholine is decreased in the neurons in the Alzheimer disease brain, leading to the incapability of learning, memory, and thinking Providing ... wall of CNTs is single or multiple layers of graphene sheets, of which those formed by rolling up of single sheet are called single-walled carbon nanotubes (SWCNTs) and those formed by rolling ... absorption of SWCNTs through intestinal columnar epithelial cells [10] (A) SWCNTs (arrows) found in the intestinal mucous membrane (B) Magnification of the cell indicated by the left arrow in (A)...

Ngày tải lên: 20/06/2014, 22:20

... evaporating HTC of functionalized nanofluid increases maximally by 17% at the operating temperature of 40°C In addition, the MHF of functionalized nanofluid is quite close to that of water, which indicates ... condenser using soldering tin The copper sheet was taken off after the experiment by melting the soldering tin The scanning electron microscope (SEM) pictures and the contact angles of working fluids ... Experimental investigation of nanofluids on sintered heat pipe thermal performance Appl Therm Eng 2009, 29:973 13 Riehl RR: Analysis of loop heat pipe behaviour using nanofluid, in: Proceedings of heat...

Ngày tải lên: 21/06/2014, 01:20

... importance of communicative activities in English speaking classes By means of research instruments, the reality of teaching and learning speaking in general and applying communicative activities in ... teacher - Making an effort in creating a relaxing atmosphere in class in order that most students are not afraid of speaking in front of the rest of the class Also, doing as many speaking activities ... Being aware of any useful/relevant conversational gambits  Modelling  Determining appropriate types of groupings  Monitoring  Involving students in the self-correction of errors  Providing...

Ngày tải lên: 05/07/2014, 08:03

... in the affected salt areas such as the coastal areas 1.5.2 Application of molecular markers in improving salinity tolerance of rice The fine mapping of Saltol QTL was made on the chromosome by ... Content 3: Evaluating some main agronomical traits and several components involving in rice yield traits, salinity tolerance level, rice quality of the lines carrying Saltol QTL in the net house ... Trang Provinces Most of cultivated land areas have been affected salinity and alum and flooding [4] 1.3 Genetic reseaches on salinity tolerance of rice 1.3.1 Mechanism of salinity tolerance of rice...

Ngày tải lên: 07/07/2014, 21:30

... Evaluation of the initial rice plant materials for improving salinity tolerance in rice 3.1.1 Evaluating salinity tolerance level of the rice lines/varieties in the artificial condition The results of ... Content 3: Evaluating some main agronomical traits and several components involving in rice yield traits, salinity tolerance level, rice quality of the lines carrying Saltol QTL in the net house ... in the affected salt areas such as the coastal areas 1.5.2 Application of molecular markers in improving salinity tolerance of rice The fine mapping of Saltol QTL was made on the chromosome by...

Ngày tải lên: 07/07/2014, 21:51

... laser was first introduced into Otolaryngology by Jako and Strong in 1972 [7] At a wavelength of 10,600 nm, this laser is rapidly absorbed by the water in the tissues ensuring minimal thermal ... functions of cutting and coagulation while minimizing collateral tissue injury Decreasing overall tissue injury has obvious clinical implications with regard to surgical precision and less obvious clinical ... line of sight This facilitates precise surgery In addition to increased maneuverability, a variable rate of gas is transmitted through the hollow core of the PBFA creating the added benefits of...

Ngày tải lên: 09/08/2014, 02:20

... operating characteristic (ROC) curve analysis was applied to evaluate different cut-off point of tumor size in order to find the appropriate size for clinical application SPSS 12.0 software (SPSS Inc, ... (GTVprn) was included (depending on the imaging system) in the tumor volume measurement First, manual tracing was performed using a graphic user interface, and area inside the outline was automatically ... extension, intrinsic resistance, or hypoxia should be considered for integration into the staging system Conclusions Since this is a retrospective study, a number of factors in terms of patient...

Ngày tải lên: 09/08/2014, 08:22

... down-regulation in the autopsy samples Interestingly, we also see up-regulation of genes involved in the ubiquitin cycle, protein ubiquitination, and ubiquitin-dependent protein catabolism This ... translated to functional proteins, up-regulation of genes involved in ubiquitin-dependent protein catabolism may lead to increased degradation of proteins in human brain samples after death This could ... differences measured in postmortem brain samples may underestimate differences existing in the living tissue Interestingly, gene expression changes induced by death not appear to increase variation...

Ngày tải lên: 14/08/2014, 16:20

... Main conveyor Main conveyor Load gypsum and add conveyor 2b conveyor 2b Stage 3: Grind materials become cements Materials adopt mainly conveyor pour in grind machine, commision of grind-machine ... commision of grind-machine in mixing and grind, materials become the farina This compoud after out of grind-machine will pass broken system The first, a part of compound was sucked by statical broken ... connected in input modules of PLC, excitive organisms were connected to input modules The Process program: When the program load in memory of PLC, commisions will save in individually address area in...

Ngày tải lên: 26/09/2014, 23:46

Ngày tải lên: 24/11/2014, 01:06