Xem 1-20 trên 53 kết quả Laboratory samples
  • Difficulty in accessing ground water without disturbing ground-water flow patterns, chemistry, microbiology, and the physical and chemical makeup of formation materials has made accurate characterization of in situ ground-water conditions a very challenging task.

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  • Blackwell Publishing. Book Condition: New. pp. 384 Veterinary Laboratory Medicine covers all aspects of basic clinical biochemistry and haematology, and includes test-by-test interpretation of laboratory results. Information is provided on sampling techniques, the selection and use of an external laboratory, as well as near-patient testing and the practice laboratory.

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  • The stability and performance of a structure founded on soil depend on the subsoil conditions, ground surface features, type of construction, and sometimes the meteorological changes. Subsoil conditions can be explored by drilling and sampling, seismic surveying, excavation of test pits, and by the study of existing data. Elaborate site investigation oftentimes cannot be conducted due to a limited assigned budget. For very favorable sites, such investigation may not be warranted.

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  • Explanatory note on how to complete ISTA Orange International Seed Lot Certificates (OIC) and ISTA Blue International Seed Sample Certificates (BIC) Disclaimer: This explanatory note can not cover all possible tests and possible outcomes of test results. Therefore only some of the possible test results are mentioned. Due to the annual changes of the ISTA Rules, this document makes no claim to be complete or current. The requirements as stated in the current ISTA Rules are the only valid ones and must be followed when issuing ISTA Certificates....

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  • The purpose of this book is to provide the user with the means to create a quality assurance manual which will satisfy the needs of his or her particular laboratory while meeting the requirements of any regulatory or accrediting body with which the organization may be associated.

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  • Nowadays, Chromatography is the most versatile and widespread technique employed in modern chemical analysis and plays a vital role in the advancement of chemistry, biology, medicine and related fields of research. Because of the inherent simplicity and ease of operation, it can be used together with a wide range of detection systems, including electrochemical, photometric and mass spectrometry, being an invaluable laboratory tool for the separation and identification of compounds.

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  • Academic writing is complex in that it involves more than grammar. It involves familiarity with the writing conventions of university culture and disciplinary subcultures in which the second/foreign language learner participates (Schneider & Fujishima, 1995). Ballard and Clanchy (1984) found that while a student is inducted into a particular discipline through lectures, discussions, and laboratory work, it is through the written assignments that success is most commonly judged.

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  • As currently taught, the introductory course in analytical chemistry emphasizes quantitative (and sometimes qualitative) methods of analysis coupled with a heavy dose of equilibrium chemistry. Analytical chemistry, however, is more than equilib- rium chemistry and a collection of analytical methods; it is an approach to solving chemical problems. Although discussing different methods is important, that dis- cussion should not come at the expense of other equally important topics.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Relevance of JAK2V617F positivity to hematological diseases - survey of samples from a clinical genetics laboratory...

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  • The pollutants contained in the wash water can include sand, sewage waste, plant materials, oil grease, diesel, dead fish, paper products, soap products and petroleum products. Samples analyzed from 2007-2008 show multiple instances of Total Coliform above 1,600,000 MPN/100ml, Fecal Coliform above 18,755 MPN/100ml, and Enterococcus above 24,196 MPN/100ml, all of which are above the action level determined by the City of Oceanside.

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  • (BQ) Ebook Signals, Systems, and Transforms is intended to be used primarily as a text for junior-level students in engineering curricula and for self-study by practicing engineers. It assumed that the reader has had some introduction to signal models, system models, and differ-ential equations (as in, for example, circuits courses and courses in mathematics), and some laboratory work with physical systems.

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  • But, if recessions are different and shocks transmit both domestically and internationally in a time varying fashion, should not we employ a broader set of regressors -and potentially models -to better track this variability across time? For example, many recent approaches to forecasting consider pooling the individual forecasts stemming from a large number of models, each differing from the other as concerns for example the lag specification, the sample over which estimation is carried out, the number of variables included.

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  • Pentabromotoluene has been used as a flame retardant in polyester and other polymers, latex, textiles, rubbers and plastics. Information on trends in use and production volume is unavailable. No information was identified as to whether it is used as an additive or reactive flame retardant (Fisk et al., 2003). Pentabromotoluene has been detected at low levels in pooled samples of Herring Gull eggs in the Great Lakes basin (Gauthier et al., 2007). Low levels were also found in male plasma and egg yolk of Glaucous Gulls from the Norwegian Arctic (Verreault et al., 2007). ...

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  • These guidelines address methods for: (1) handling of samples as intact soil cores; (2) preserving samples; (3) storing samples in hermetically sealed containers; and (4) minimizing analyte losses due to direct volatilization (both in the field and the laboratory) and biodegradation. Region 9 believes that following these guidelines is an important part of ensuring that accurate concentrations of VOCs are measured.

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  • Diagnosis is fundamental to the appropriate treatment and wellbeing of the equine patient. Despite the many excellent clinical texts that are available, few seem to explain in sufficiently precise terms which clinicopathological tests are appropriate or how particular techniques should be performed. The first edition of this book was designed to provide an illustrated practical guide to the various diagnostic techniques employed in equine medicine. This second edition is an update by international experts in the field.

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  • Tham khảo sách 'diagnostic techniques in equine medicine', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The analysis is limited to the post-World War II period. Using this period provides an adequate sample for the multivariate regression analysis that is used to examine correlation. The top statutory tax rates are examined because the current Congressional debate over the fate of the 2001 and 2003 Bush-era tax cuts focuses on the statutory tax rates affecting the highest income taxpayers. For an overview of the broader issues of these relationships see CRS Report R42111, Tax Rates and Economic Growth, by Jane G. Gravelle and Donald J. Marples. ...

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  • A one-gram, oven-dried sample of extractive-free bamboo was placed in a 150 mL beaker. Fifteen mL of cold sulfuric acid (72 percent) was added slowly while stirring and mixed well. The reaction proceeded for two hours with frequent stirring in a water bath maintained at 20 o C. When the two hours had expired, the specimen was transferred by washing it with 560 mL of distilled water into a 1,000 mL flask, diluting the concentration of the sulfuric acid to three percent. An allihn condenser was attached to the flask. The apparatus was placed in...

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  • Laboratory Procedure I . PCM Familiarization A. The analog to digital conversion properties of the PCM was investigated in the last experiment. The “start” bit and the 7 data bits and two “stop” bits were identified. It was also found that if the parity switch is on, then the 1st stop bit is changed to an even parity bit. That is, the 7 data bits plus the parity bit will always be an even number (refer to figure 8 B) B. Set up Figure 8A. the MSB-LSB quantization switches are to be implemented using the Sample and hold and Quantizer blocks....

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  • Developing fast high-performance liquid chromatography (HPLC) methods can improve work efficiency during research, development, or production of a drug substance or a drug product. HPLC is a key technique in all of these areas. Until recently, analysis times of greater than 30 minutes were common. Modern pharmaceutical R&D, with its high-throughput screening, demands high-throughput methods to deal with the large number of samples. To reduce production cycle time, fast HPLC methods are essential for on-line or at-line process control and for rapid release testing.

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