Analytic sample preparation methods. Medical search

Use of various chemical separation and extraction methods, such as SOLID PHASE EXTRACTION; CHROMATOGRAPHY; and SUPERCRITICAL FLUID EXTRACTION; to prepare samples for analytical measurement of components.

Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.

Methodologies used for the isolation, identification, detection, and quantitation of chemical substances.

A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy, thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general, only molecular ions of the analyte molecules are produced, and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis.

Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)

The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.

In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.

Food that has been prepared and stored in a way to prevent spoilage.

The art or practice of preparing food. It includes the preparation of special foods for diets in various diseases.

A diphenylmethane stimulant laxative used for the treatment of CONSTIPATION and for bowel evacuation. (From Martindale, The Extra Pharmacopoeia, 30th ed, p871)

Methods of preparing cells or tissues for examination and study of their origin, structure, function, or pathology. The methods include preservation, fixation, sectioning, staining, replica, or other technique to allow for viewing using a microscope.

Studies in which variables relating to an individual or group of individuals are assessed over a period of time.

The preparation, mixing, and assembling of a drug. (From Remington, The Science and Practice of Pharmacy, 19th ed, p1814)

Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.

That portion of the electromagnetic spectrum from the UHF (ultrahigh frequency) radio waves and extending into the INFRARED RAYS frequencies.

Relating to the size of solids.

A basis of value established for the measure of quantity, weight, extent or quality, e.g. weight standards, standard solutions, methods, techniques, and procedures used in diagnosis and therapy.

A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection.

Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.

An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.

Effects of sample dilution, peroxidase concentration, and chloride ion on the measurement of unbound bilirubin in premature newborns. (1/113)

OBJECTIVES: To assess the effects of sample dilution, peroxidase concentration, and chloride ion (Cl(-)) on plasma unbound bilirubin (B(f)) measurements made using a commercial peroxidase methodology (UB Analyzer) in a study population of ill, premature newborns. DESIGN AND METHODS: B(f) was measured with a UB Analyzer in 74 samples at the standard 42-fold sample dilution and compared with B(f) measured at a 2-fold sample dilution using a FloPro Analyzer. B(f) was measured at two peroxidase concentrations to determine whether the peroxidase steady state B(f) (B(fss)) measurements were significantly less than the equilibrium B(f) (B(feq)), in which case it was necessary to calculate B(feq) from the two B(fss) measurements. B(f) was also measured before and after adding 100 mmol/L Cl(-) to the UB Analyzer assay buffer. RESULTS: B(feq) at the 42-fold dilution was nearly 10-fold less than but it correlated significantly with B(feq) at the 2-fold dilution (mean 8.2+/-5.2 nmol/L versus 73.5+/-70 nmol/L, respectively, p<0.0001; correlation r=0.6). The two UB Analyzer B(fss) measurements were significantly less than B(feq) in 42 of 74 (57%) samples, and Cl(-) increased B(feq) in 66 of 74 (89%) samples by a mean of 82+/-67%. CONCLUSIONS: B(fss) measured by the UB Analyzer at the standard 42-fold sample dilution using assay buffer without Cl(-) and a single peroxidase concentration is significantly less than the B(feq) in undiluted plasma. Accurate B(f) measurements can be made only in minimally diluted serum or plasma. (+info)

Isolation of polysome-bound mRNA from solid tissues amenable for RT-PCR and profiling experiments. (2/113)

Using cell lines and primary cells, it has been shown that translation control plays a key role regulating gene expression during physiological and pathological conditions. The relevance of this type of regulation in vivo (tissues, organs) remains to be elucidated, due to the lack of an efficient method for polysome-bound fractionation of solid tissue RNA samples. A simple and efficient method is described, in which tissue samples were pulverized in liquid nitrogen and lysed with NP40-lysis buffer in the presence of the RNAse inhibitors RNAsin and vanadyl-ribonucleoside complex. After cell lysis, the cytoplasmic extract was loaded into sucrose gradients, fractionated, and RNA prepared from each fraction. The obtained RNA was reverse transcribed with a low efficiency, a problem that was overcome by purifying polyA+ RNA. Aiming to use small quantities of solid tissue samples (10-20 mg/sample), polyA+ RNA purification was discarded, and the different components were individually screened for a negative effect on reverse transcription. The polysaccharide heparin, which is present as a nonspecific RNAse inhibitor, inhibits reverse transcriptase activity, and must be removed from RNA samples for an efficient reaction. Heparin was successfully removed by precipitation of the RNA with lithium chloride, as demonstrated by the reversal of the inhibition on RT-PCR reactions. In summary, we present a reliable method allowing us to prepare high-quality polysome-bound mRNA from small quantities of liquid-nitrogen-frozen solid tissue samples from both human and mouse origin, amenable for Northern blotting, RT-PCR reactions, and expression profiling analyses. (+info)

Metabolism, pharmacokinetics, and excretion of a nonpeptidic substance P receptor antagonist, ezlopitant, in normal healthy male volunteers: characterization of polar metabolites by chemical derivatization with dansyl chloride. (3/113)

The excretion, biotransformation, and pharmacokinetics of ezlopitant [(2-benzhydryl-1-aza-bicyclo[2.2.2]oct-3-yl)-(5-isopropyl-2-methoxy-benzyl)-amine ], a substance P receptor antagonist, were investigated in healthy male volunteers after oral administration of a single 200-mg (approximately 93 microCi/subject) dose of [(14)C]ezlopitant. The total recovery of administered radioactive dose was 82.8 +/- 5.1, with 32.0 +/- 4.2% in the urine and 50.8 +/- 1.4% in the feces. Mean observed maximal serum concentrations for ezlopitant and total radioactivity were achieved at approximately 2 h after oral administration; thus, ezlopitant was rapidly absorbed. Ezlopitant was extensively metabolized in humans, since no unchanged drug was detected in urine and feces. The major pathway of ezlopitant in humans was the result of the oxidation of the isopropyl side chain to form the omega-hydroxy and omega-1-hydroxy (M16) metabolites. M16 and omega,omega-1-dihydroxy (1,2-dihydroxy, M12) were identified as the major circulating metabolites accounting for 64.6 and 15.4% of total circulating radioactivity, respectively. In feces, the major metabolite M14 was characterized as the propionic acid metabolite and formed by further oxidation of the omega-hydroxy metabolite. The urinary metabolites were the result of cleaved metabolites caused by oxidative dealkylation of the 2-benzhydryl-1-aza-bicyclo[2.2.2]oct-3-yl moiety. The metabolites (M1A, M1B, and M4), approximately 34% of the total radioactivity in urine, were identified as benzyl amine derivatives. These were polar metabolites that were further characterized using the reaction with dansyl chloride to derivatize the primary amines and phenol moieties to less polar analytes. The other metabolites were the result of O-demethylation, dehydrogenation of the isopropyl group, and oxidation on the quinuclidine moiety. (+info)

Arsenic determination in marine sediment using ultrasound for sample preparation. (4/113)

This work deals with As determination in marine sediment using ultrasound for sample preparation. It is shown that As can be quantitatively extracted from marine sediment using 20% (v/v) HCl and sonication. The slurry is centrifuged and the analyte is determined in the supernatant by hydride generation atomic absorption spectrometry (HG AAS). A flow injection (FI) system is employed for hydride generation, with 0.5% (m/v) NaBH(4) used as reducdant and a 20% (v/v) HCl used as sample carrier. The limit of quantification is 1.6 microg g(-1) of As, which is based on 800 microl of sample solution and 0.200 g of sample mass in a volume of 50 mL. Certified and non certified marine sediment samples were analyzed; the results were in accordance with the certified or reference values. Speciation analysis by HPLC-ICP-MS showed that As(V) is the only detectable As species present in the supernatant of the centrifuged sample. (+info)

On-plate digestion using a commercial microfraction collector for nano-HPLC matrix-assisted laser desorption/ionization tandem time-of-flight protein analysis. (5/113)

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Synthesis of bis(amino alcohol)oxalamides and their usage for the preconcentration of trace metals by cloud point extraction. (6/113)

C(2)-Symmetric two bis(amino alcohol)oxalamides (diamidediols) were synthesized and fully characterized. A new method was developed and successfully applied for the simultaneous preconcentration of both trace and toxic metals in water, by using C(2)-symmetric compounds. Under the optimum experimental conditions (i.e. pH = 10.0 +/- 0.2, 2.75 x 10(-3) mol L(-1) N,N'-bis[(1R)-1-ethyl-2-hydroxyethyl]ethanediamide (DAD1), 1.75 x 10(-3) mol L(-1) N,N'-bis[(1S)-1-benzyl-2-hydroxyethyl]-ethanediamide (DAD2), 0.10% w/v octylphenoxy-polyethoxyethanol (Triton X-114)), calibration graphs were linear in the range of 2.5 - 25.0 ng mL(-1) for Cu and Cd, 5.0 - 25.0 ng mL(-1) for Co and Ni. The enrichment factors were 18, 23, 18 and 20 for Cd, Cu, Co and Ni in the case of DAD1, respectively; 20, 22, 17 and 20 for Cd, Cu, Co and Ni in the case of DAD2. The limits of detection for DAD1 were found to be 0.45, 0.50, 1.25 and 0.60 ng mL(-1) for Cd, Cu, Co and Ni, respectively, and for DAD2 were found to be 0.44, 0.25, 0.60 and 1.55 ng mL(-1) for Cd, Cu, Co and Ni, respectively. The developed method was applied to the determination of Cu, Cd, Co and Ni in water samples and certified reference materials with satisfactory results. (+info)

Triple-phase single-drop microextraction of silver and its determination using graphite-furnace atomic-absorption spectrometry. (7/113)

A new method is described for the determination of silver based on triple-phase microextraction using diethyldithio-carbamate (DDTC) and thioaminophenol. Ag is separated and preconcentrated from the matrix of the sample solution, and finally determined by electrothermal atomic-absorption spectroscopy. The parameters that affect the efficiency were investigated. Under the optimized conditions, a 30-fold preconcentration factor with a detection limit of 0.05 microg L(-1) was achieved. The relative standard deviation was 10% (5 determinations). The developed method was applied to the determination of trace Ag in water samples. (+info)

Moving known libraries to an addressable array: a site-selective hetero-Michael reaction. (8/113)

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Section C: This section was purely administrative Compilation and preparation of steganography methods of all types, in ... Requisitions for sampling check-up on German signal communication and evaluation of observations, in collaboration with Gen ... Its primary function was the direction of analytic operations of the service and consisted of the following groups: Group I ... New methods were developed to utilise the results of the point-to-point intercept of traffic by W-Leit, Southeast, and the air- ...

https://en.wikipedia.org/wiki/Luftnachrichten_Abteilung_350

Students who do not use these courses often rely on material from university text books, GRE preparation books, sample tests, ... Critics have also stated that the computer-adaptive method of placing more weight on the first several questions is biased ... and 423 on the analytic, while white test-takers averaged 496, 538, and 564, respectively. The National Association of Test ... ETS provides preparation software called PowerPrep, which contains two practice tests of retired questions, as well as further ...

https://en.wikipedia.org/wiki/Graduate_Record_Examinations

As part of that work he invented the method of "lithium dating" that revised the ages of young star clusters upward by 50% or ... Reiners, A.; Basri, G. (2010-02-01). "A Volume-Limited Sample of 63 M7-M9.5 Dwarfs. II. Activity, Magnetism, and the Fade of ... His work there originally focused on high-energy observations of stars (with Stuart Bowyer) in preparation for the eventual ... Basri, Gibor; Shah, Riya (2020-09-01). "The Information Content in Analytic Spot Models of Broadband Precision Light Curves. II ...

https://en.wikipedia.org/wiki/Gibor_Basri

Chemical and physical characteristics of samples are studied and analyzed by the center. "Building Technologies" is created for ... The university has the Foundation Faculty, which is an intensive academic, scientific, and language preparation of students for ... "IRGETAS" is a common use center for carrying out analytic and materials engineering research. ... ", "Digital Earth Exploration Methods", "Precision Farming", with participation of the Technical University of Munich, Obuda ...

https://en.wikipedia.org/wiki/D._Serikbayev_East_Kazakhstan_Technical_University

... the relative differences in expression among different spots within a sample and between samples is the preferred method of ... It is critical that information about the sample preparation and handling is discussed, in order to help identify the ... Class discovery analysis: This analytic approach, sometimes called unsupervised classification or knowledge discovery, tries to ... The two samples to be compared (pairwise comparison) are grown/acquired. In this example treated sample (case) and untreated ...

https://en.wikipedia.org/wiki/DNA_microarray

... analytic, deductive, inductive, and heuristic methods. For example, the difference between synthetic and analytic methods is ... For example, methodology should assist the researcher in deciding why one method of sampling is preferable to another in a ... Herbartianism identifies five essential components of teaching: preparation, presentation, association, generalization, and ... In mathematics, synthetic methods proceed from the known to the unknown while analytic methods trace a path from the unknown to ...

https://en.wikipedia.org/wiki/Methodology

A more common method directly measures TOC in the sample by again acidifying the sample to a pH value of two or less to release ... Since the early 1970s, TOC has been an analytic technique used to measure water quality during the drinking water purification ... As many of these biotechnology operations include the preparation of medicines, the U.S. Food and Drug Administration (FDA) ... of sample can be handled making the methods less sensitive than chemical oxidation methods capable of digesting as much as 10 ...

https://en.wikipedia.org/wiki/Total_organic_carbon

However, they all require long sample preparation times and destroy the sample. Nondestructive techniques for the forensic ... other analytic methods have been sufficient. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a ... Additionally, increases in sample throughput from dozens of samples a day to hundreds of samples a day have revolutionized ... For other applications that may involve very viscous samples or samples that have particulate matter, a process known as sample ...

https://en.wikipedia.org/wiki/Inductively_coupled_plasma_mass_spectrometry

Then, various methods used to characterize organogels will be explained. Finally, we will review the use of organogels in ... Souge, J. L. Analytic solutions to Smoluchowski's coagulation equation: a combinatorial inter-pretation. J. Phys. A.: Math. Gen ... The tip is lowered into the sample and a laser reflecting off the cantilever allows for precise measurements to be obtained. In ... Koshima, H.; Matsusaka, W. Yu, H. Preparation and photoreaction of organogels based on ben-zophenone. J. Photochemistry and ...

https://en.wikipedia.org/wiki/Organogels

Other analytic methods can be subdivided into the physical, the gas chromatographical, and the chemosensory method. When ... To collect an odor sample, the samples are collected using specialized sample bags, which are made from an odor free material, ... He suggested the evolutionary pressure of diversification of food sources and increased complexity of food preparation ... The method is based on dilution of an odor sample to the odor threshold. The numerical value of the odor concentration is equal ...

https://en.wikipedia.org/wiki/Odor

National Inpatient Sample (NIS) (formerly the Nationwide Inpatient Sample): A 20 percent stratified sample of all-payer, ... HCUP Methods Series Reports offer methodological information on the HCUP databases and software tools. HCUP Findings-At-A- ... ICD-9-CM codes were frozen in preparation for ICD-10-CM implementation and regular maintenance of the codes has been suspended ... While designed to be used with HCUP databases, the analytic tools may be applied to other administrative databases. The ...

https://en.wikipedia.org/wiki/Healthcare_Cost_and_Utilization_Project

R&D head Methods' development of the organization scintillation properties for single crystals on the basis of rare earth ... The reference book contains a brief biographical information on contemporary Ukrainian artists and samples of their signatures ... "Analytic geometry" (2003) (ISBN 978-966-8319-92-1). He is the initiator of the creation of a new scientific journal "Functional ... extreme urgency acquire developed a new organic and inorganic scintillators and processes for their preparation. Custom ...

https://en.wikipedia.org/wiki/Borys_Grynyov

May 2018). "Cochrane Qualitative and Implementation Methods Group guidance series-paper 5: methods for integrating qualitative ... He used a meta-analytic approach to aggregate the outcomes of multiple clinical studies. In 1972 Archie Cochrane wrote: 'It is ... Recent visualisation innovations include the albatross plot, which plots p-values against sample sizes, with approximate effect ... provides guidance to authors for the preparation of Cochrane Intervention reviews.' The Cochrane Handbook also outlines the key ...

https://en.wikipedia.org/wiki/Systematic_review

This method is preferred among most over the more traditional chromic acid bath for cleaning NMR tubes, because no traces of ... The preparation of aqua regia by directly mixing hydrochloric acid with nitric acid only became possible after the discovery in ... Aqua regia is also used in etching and in specific analytic procedures. It is also used in some laboratories to clean glassware ... Hoffman, R. (10 March 2005) How to make an NMR sample, Hebrew University. Accessed 31 October 2006. American Industrial Hygiene ...

https://en.wikipedia.org/wiki/Aqua_regia

Eventually, the manual method was modified so that a match could be notated in-match at courtside directly into a microcomputer ... But how many is enough? In the literature there are large differences in sample sizes. These problems have very serious direct ... This modelling of technical attainment has been replicated in many sports and form the basis of preparation at the highest ... The modelling of competitive sport is an informative analytic technique because it directs the attention of the modeller to the ...

https://en.wikipedia.org/wiki/Notational_analysis

... and Sample Phonics Lessons. Analytic phonics does not involve pronouncing individual sounds (phonemes) in isolation and ... method or whole-word method, are not a part of the phonics method. They are usually associated with whole language and balanced ... It goes on to say that teachers' preparation programs must include evidence-based practices, including the five essential ... For some teachers this is a method of teaching spelling by using the sounds (phonemes). However, it can also be a method of ...

https://en.wikipedia.org/wiki/Reading

Hence, the latter method may be used on samples that test positive using other methods to help distinguish between the various ... Since the first preparation was reported in 1887, numerous synthetic routes to amphetamine have been developed. The most common ... Several other studies,[97-101] including a meta-analytic review[98] and a retrospective study,[97] suggested that stimulant ... method 5). Another method is the reaction of phenylacetone with ammonia, producing an imine intermediate that is reduced to the ...

https://en.wikipedia.org/wiki/Amphetamine

Reich sent a sample of the bacteria to a Norwegian biologist, Theodor Thjøtta of the Oslo Bacteriological Institute, who also ... Freud allowed him to start meeting with analytic patients in September that year, although Reich was just 22 years old and ... To counter this, he allowed the Norwegian pathologist Leiv Kreyberg to examine one of his bion preparations under a microscope ... His second wife, Ilse Ollendorf, said vegetotherapy replaced the psychoanalytic method of never touching a patient with "a ...

https://en.wikipedia.org/wiki/Wilhelm_Reich

Out of a sample of 200, 100 of whom were dependent on cannabis and the other 100 emotionally healthy, the dependent group ... Meta-analytic evidence confirms that self-reported emotional intelligence predicting job performance is due to mixed EI and ... Since its popularization in recent decades, methods of developing EI have become widely sought by individuals seeking to become ... that several participants were good leaders because their emotional intelligence was developed in counselor preparations, where ...

https://en.wikipedia.org/wiki/Emotional_intelligence

... are the set of presplit sample indices, set of sample indices for which the split test is true, and set of sample indices for ... Requires little data preparation. Other techniques often require data normalization. Since trees can handle qualitative ... To reduce the greedy effect of local optimality, some methods such as the dual information distance (DID) tree were proposed. ... what you need to know about data mining and data-analytic thinking]. Fawcett, Tom. (1st ed.). Sebastopol, Calif.: O'Reilly. ...

https://en.wikipedia.org/wiki/Decision_tree_learning

The Manor had been built as a hunting lodge in 1799 and was improved by King in preparation for their honeymoon. It later ... The notes are around three times longer than the article itself and include (in Note G), in complete detail, a method for ... Babbage was impressed by Lovelace's intellect and analytic skills. He called her "The Enchantress of Number". In 1843, he wrote ... Bromley notes several dozen sample programs prepared by Babbage between 1837 and 1840, all substantially predating Lovelace's ...

https://en.wikipedia.org/wiki/Ada_Lovelace

The focus is general methods that can be applied in various problem domains. M&S Applications solve real world problems by ... Examples are supporting deep water operation of the US Navy or the simulating the surface of neighbored planets in preparation ... 2013). "Simulation Study to Validate Sample Allocation for the National Compensation Survey" (PDF). JSM 2013 - Survey Research ... in order to blend algorithmic and analytic techniques through visualizations available directly to decision makers. A study ...

https://en.wikipedia.org/wiki/Modeling_and_simulation

... analytic number theory) Malgrange preparation theorem (singularity theory) Malgrange-Ehrenpreis theorem (differential equations ... Nyquist-Shannon sampling theorem (information theory) Odd number theorem (physics) Open mapping theorem (complex analysis) Open ... voting methods) Girsanov's theorem (stochastic processes) Glaisher's theorem (number theory) Gleason's theorem (Hilbert space) ... analytic geometry) Cramér-Wold theorem (measure theory) Critical line theorem (number theory) Crooks fluctuation theorem ( ...

https://en.wikipedia.org/wiki/List_of_theorems

Design of experiments Block design and Analysis of variance Response surface methodology Sample Survey Sampling theory ... advisory Records management Reference Reference desk Reference management software Registrar Research methods Slow fire Special ... Marxism Philosophical traditions and schools Platonism Aristotelianism Analytic philosophy Continental philosophy Eastern ... Cooking Cuisine Culinary arts Culinary tourism Delicacy Diet Flavor Food choice Food pairing Food photography Food preparation ...

https://en.wikipedia.org/wiki/List_of_academic_fields

However, pure calcium cannot be prepared in bulk by this method and a workable commercial process for its production was not ... Other calcium preparations include calcium carbonate, calcium citrate malate, and calcium gluconate. The intestine absorbs ... Calcium is readily complexed by oxygen chelates such as EDTA and polyphosphates, which are useful in analytic chemistry and ... in a sample compared to the same ratio in a standard reference material. 44Ca/40Ca varies by about 1% among common earth ...

https://en.wikipedia.org/wiki/Calcium

The infrared energy from the filament heats the sample. Ultra-high vacuum is necessary for many surface analytic techniques ... These include simple air leaks, virtual leaks, and desorption (either from surfaces or volume). A variety of methods for leak ... Thin film growth and preparation techniques with stringent requirements for purity, such as molecular beam epitaxy (MBE), UHV ... The manipulator or sample holder may include features that allow additional control and testing of a sample, such as the ...

https://en.wikipedia.org/wiki/Ultra-high_vacuum

... and Sample Phonics Lessons. Synthetic phonics, also known as blended phonics, is a method employed to teach students to read by ... On the other hand, with analytic phonics teaching, although the boys performed as well as the girls in word reading, they had ... It states that teachers' preparation programs must include evidence-based practices, including the five essential components of ... For some teachers this is a method of teaching spelling by using the sounds (phonemes). However, it can also be a method of ...

https://en.wikipedia.org/wiki/Phonics

Yet it remains the case that Leibniz's methods and concerns often anticipate the logic, and analytic and linguistic philosophy ... In preparation. Series 6. Philosophical Writings. 7 vols., 1663-90, and Nouveaux essais sur l'entendement humain. Series 7. ... But Hideaki Hirano argues differently, quoting Mandelbrot: To sample Leibniz' scientific works is a sobering experience. Next ... This method for solving systems of linear equations based on determinants was found in 1684 by Leibniz (Cramer published his ...

https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz

Haidt, J., McCauley, C., & Rozin, P. (1994). Individual differences in sensitivity to disgust: A scale sampling seven domains ... It is a "compound affect" that entails intellectual preparation, or formatting, and theatrical techniques. Wilson argues that ... Landy, J (2015). "Does incidental disgust amplify moral judgment? A meta-analytic review of experimental evidence" (PDF). ... Advances in Methods and Practices in Psychological Science. 3 (1): 3-23. doi:10.1177/2515245919881152. S2CID 216353486. Ong, HH ...

https://en.wikipedia.org/wiki/Disgust

The psycho-molecular method uses specific tasks in order to influence specific neurotransmitter systems. Through the control of ... Nearest-neighbor comparison of two persons in a sample involves comparing a person A with the person B who has the closest ... Saulsman, L. M.; Page, A. C. (2004). "The five-factor model and personality disorder empirical literature: A meta-analytic ... that involves living at a farm where the sole activity is food foraging and preparation; Expressive technique, that involves ...

https://en.wikipedia.org/wiki/Hypostatic_model_of_personality

The "Platform Test" method involves having the candidate make a presentation to both the selection panel and other candidates ... ISBN 978-0-19-993069-2. Wiesner, Willi H.; Cronshaw, Steven F. (December 1988). "A meta-analytic investigation of the impact of ... Sometimes other selection tools (e.g., work samples, cognitive ability tests, personality tests) are used in combination with ... preparation strategies, and response strategies in relation to performance in situational employment interviews: An extension ...

https://en.wikipedia.org/wiki/Job_interview

Bolzano, "On the Mathematical Method", §2 Bolzano, "On the Mathematical Method", §3 Bolzano, "On the Mathematical Method", §4 ... He also gave the first purely analytic proof of the intermediate value theorem (also known as Bolzano's theorem). Today he is ... 103 Volumes available, 28 Volumes in preparation). Wissenschaftslehre, 4 vols., 2nd rev. ed. by W. Schultz, Leipzig I-II 1929, ... a sample of a new way of developing analysis", whose ultimate goal would not be realized until some fifty years later when they ...

https://en.wikipedia.org/wiki/Bernard_Bolzano

Problem focused coping involves the individual in a goal-oriented effort to alter the situation with an analytic approach to ... preparation for death all showed improvements after the therapy was concluded. At a follow up depression, other indicators of ... although a few studies have looked at other elderly samples. Research and implementation has been tried in several areas with ... due to the increased organization of methods and purpose of this therapy. The benefits of reminiscence therapy occurs ...

https://en.wikipedia.org/wiki/Reminiscence_therapy

"Russian troops in Mariupol to ban all movement in the city in preparation for "filtration" and mobilisation operation". ... Archer, John (2000). "Sex differences in aggression between heterosexual partners: A meta-analytic review". Psychological ... a sample size of approximately 97 during the last 100 years. In Australia, men are also over-represented as victims, with the ... Exploring the fear of crime gender paradox using quasi-experimental methods (PDF) (PhD). Swinburne University of Technology. ...

https://en.wikipedia.org/wiki/Violence_against_men

The cryptanalytic methods employed by the Vauck section differed from normal methods of solution because of the peculiar nature ... The In 7/IV unit Hollerith kit was used at the request of the OKW/Chi for instance, when for example, the preparation of 3- ... The recipher consists of two elements: Shifting by means of Chiffranten enciphering: Any figure, chosen from Row A (sample code ... termed Rapid analytic machinery that were time-consuming to build and costly, and only worked in specifically defined areas, ...

https://en.wikipedia.org/wiki/General_der_Nachrichtenaufklärung

Homeopaths contend that their methods produce a therapeutically active preparation, selectively including only the intended ... Sample I (July 21, 2008). "Pharmacists urged to 'tell the truth' about homeopathic remedies". The Guardian. London. Malik, IA; ... Sackett, David L. (1979). "Bias in analytic research". Journal of Chronic Diseases. 32 (1-2): 51-63. doi:10.1016/0021-9681(79) ... Some homeopathic preparations involve poisons such as Belladonna, arsenic, and poison ivy, which are highly diluted in the ...

https://en.wikipedia.org/wiki/Evidence_and_efficacy_of_homeopathy

Initial attempts employed exfoliation techniques similar to the drawing method. Multilayer samples down to 10 nm in thickness ... "Preparation of conductive graphene/graphite infused fabrics using an interface trapping method". Carbon. 81: 38-42. doi:10.1016 ... The Kubo formula provides an analytic expression for the graphene's conductivity and shows that it is a function of several ... The method can control thickness, ranging from monolayer to multilayers, which is known as "Tang-Lau Method". Gram-quantities ...

https://en.wikipedia.org/wiki/Graphene

The method treats earthquake onset as a critical phenomenon. However, a review of the updated VAN method appeared in Physics of ... 2018) reserved 10% of positive training earthquake data samples and an equal quantity of randomly chosen negative samples. ... 2012 concluded: "The concept of a large-scale 'preparation zone' indicating the likely magnitude of a future event, remains as ... Meta-Analytic Insight on their Limitations". arXiv:1910.01178. doi:10.1785/0220200021. S2CID 203642017. {{cite journal}}: Cite ...

https://en.wikipedia.org/wiki/Earthquake_prediction

Experimental methods using randomised samples, though, suggest that mindfulness as a state or temporary practice can influence ... Xue J, Zhang Y, Huang Y (June 2019). "A meta-analytic investigation of the impact of mindfulness-based interventions on ADHD ... According to the contemporary Theravada orthodoxy, Samatha is used as a preparation for Vipassanā, pacifying the mind and ... methods and adds in newer psychological strategies such as mindfulness and mindfulness meditation. Cognitive methods can ...

https://en.wikipedia.org/wiki/Mindfulness

... al improvisation can be done with or without preparation. Improvisation is a major part of some types of music, such as ... The study of composition has traditionally been dominated by examination of methods and practice of Western classical music, ... Speculative music theory, contrasted with analytic music theory, is devoted to the analysis and synthesis of music materials, ... adding sampled and digital instruments and editing the recording digitally. In the 1990s, some bands in genres such as nu metal ...

https://en.wikipedia.org/wiki/Music

The rationalist Maimonides sees the ethical and ritual divine commandments as a necessary, but insufficient preparation for ... Wikiversity has learning resources about What Matters Meaning of Life: The Analytic Perspective article in the Internet ... Human knowledge comes from human observation, experimentation, and rational analysis (the scientific method), and not from ... and increased longevity in both American and Japanese samples. In 2014, the British National Health Service began recommending ...

https://en.wikipedia.org/wiki/Meaning_of_life

This method has provided support to the system as a whole rather than individual CSOs. Expert cadres of policy-makers and ... Key projects: Preparation of the National human development report for Uzbekistan, Sociological "portrait" of the Uzbek ... Mendizabal, Enrique y Kristen Sample (eds) (2009) Dime a quien escuchas... Think Tanks y Partidos Politicos en America Latina, ... analytic support in economic reforming and development in Uzbekistan; improving knowledge and skills of the subjects of ...

https://en.wikipedia.org/wiki/Think_tank

Previous methods had suffered from bias and resulted in choosing the wrong soldiers for officer training. Standardized testing ... The estimate is derived from the analysis of test scores and other relevant data from a sample drawn from the population. This ... "A Meta-Analytic Assessment of the Predictive Validity..." Journal of Educational and Psychological Measurement. 1995. ... Another criticism relating to social class and standardized testing is that only wealthy people receive test preparation and ...

https://en.wikipedia.org/wiki/Standardized_test

However, the methods used to measure memory loss are generally poor, and their application to people with depression, who have ... A sample of the general public, medical students, and psychiatry trainees in the United Kingdom found that the psychiatry ... Pagnin D, de Queiroz V, Pini S, Cassano GB (2004). "Efficacy of ECT in depression: a meta-analytic review". The Journal of ECT ... Suggested preparation for ECT during pregnancy includes a pelvic examination, discontinuation of nonessential anticholinergic ...

https://en.wikipedia.org/wiki/Electroconvulsive_therapy

study such as its "untested sampling methods, small sample size and problematic comparative data" which she argued had been ... Ancient Egyptian was a synthetic language, but it became more analytic later on. Late Egyptian developed prefixal definite and ... Ceramics served as household wares for the storage, preparation, transport, and consumption of food, drink, and raw materials. ... Because their methods of calculation could not handle most fractions with a numerator greater than one, they had to write ...

https://en.wikipedia.org/wiki/Ancient_Egypt

Using two different methods to remove all known gases from air, Ramsay and Lord Rayleigh were able to announce in 1894 that ... He burnt phosphorus and sulfur in air, and proved that the products weighed more than the original samples, with the mass ... In 1903, Mikhail Tsvet invented chromatography, an important analytic technique. In 1904, Hantaro Nagaoka proposed an early ... and the preparation of metallic salts, compounds and alloys. The tempering of steel was brought in ancient India to a ...

https://en.wikipedia.org/wiki/History_of_chemistry

Now, however, a method combining new analytic instrumentation and techniques for sample preparation has been developed and is ... each elemental analysis often required a separate sample-preparation procedure and, consequently, a separate sample. As a ... these biologic monitoring data can be collected considerably more efficiently than with traditional analytic methods. In ... This method, called inductively coupled plasma-atomic emission spectroscopy (ICP-AES), allows simultaneous, multi-element ...

https://www.cdc.gov/mmwr/preview/mmwrhtml/00000443.htm

... method directly measures multiple metals in urine specimens using mass spectrometry after a simple dilution sample preparation ... Please refer to the NHANES Analytic Guidelines and the on-line NHANES Tutorial for further details on the use of sample weights ... Laboratory Method Files. Metals - Urine (August 2021) Laboratory Quality Assurance and Monitoring. Urine samples are processed ... In the MEC, these methods include performing blind split samples collected on "dry run" sessions. In addition, contract ...

https://wwwn.cdc.gov/Nchs/Nhanes/limited_access/UM_J_R.htm

D9.408.477.50 Analytic Sample Preparation Methods E5.842 E5.196.59 Antibody-Coated Bacteria Test, Urinary E1.450.495.435.375.50 ... C1.539.463.600.249 Petrosal Sinus Sampling E1.450.150.100.600 E1.370.225.124.100.600 E1.450.865.632.150.600 E1.370.225.998. ... D12.776.765.199.186 Chorionic Villi Sampling E1.450.230.100.150 E1.370.225.500.384.100.149 E1.450.230.150 E1.370.225.500. ... E1.370.225.750.551 Histocytological Preparation Techniques E1.370.225.500.620 E1.370.225.750.600 Histological Techniques E1.370 ...

https://decs.bvs.br/P/mnchg2012.txt

Please refer to the NHANES Analytic Guidelines and the on-line NHANES Tutorial for details on the use of sample weights and ... In the MEC, these methods include performing blind split samples collected during "dry run" sessions. In addition, contract ... Each laboratory staff member is observed for equipment operation, specimen collection and preparation; testing procedures and ... Samples that were negative for HPV and the β-globin control indicated lack of a suitable sample and were considered inadequate ...

https://wwwn.cdc.gov/Nchs/Nhanes/limited_access/HPVW_J_R.htm

QuEChERS Sample Preparation Method. QuEChERS is a Quick, Easy, Cheap, Effective, Rugged and Safe sample cleanup method used ... Gas chromatography is a common analytic technique used to separate and analyze volatile compounds in the gas phase. GC is ... The "QuEChERS" (Dispersive SPE, dSPE) method has emerged as a popular sample preparation technique in the area of multi-residue ... Sample Purification. A range of purification methods may be used to prepare a sample prior to downstream analysis. Purification ...

https://www.sigmaaldrich.com/VN/en/products/analytical-chemistry/analytical-sample-preparation/spe-and-quechers

... often as part of a sample preparation protocol or when making reference standards. Spectrophotometric methods such as ICP-MS ... or by causing blockage in the analytic instrument - leading to premature maintenance and column exchange and thereby increasing ... Once the sample has cooled, it is re-weighed to determine the amount of water in the original sample. The protocols require the ... recording the initial sample weight and up to three back weights for up to 10 batches of 100 samples each, and will indicate ...

https://www.chemistryworld.com/sponsored-content/making-quality-the-priority-for-fine-and-specialty-chemicals-suppliers/4015817.article

Analytic Sample Preparation Methods - Preferred Concept UI. M0490634. Scope note. Use of various chemical separation and ... MT methods. SN statistics & numerical data. ST standards. TD trends. VE veterinary. ... extraction methods, such as SOLID PHASE EXTRACTION; CHROMATOGRAPHY; and SUPERCRITICAL FLUID EXTRACTION; to prepare samples for ... Use of various chemical separation and extraction methods, such as SOLID PHASE EXTRACTION; CHROMATOGRAPHY; and SUPERCRITICAL ...

https://decs.bvsalud.org/en/ths/resource/?id=52440

Manual procedures with multiple steps in sample or reagent preparation or the analytic process Virology. *Isolation and ... Automated or semi-automated procedures requiring operator intervention during the analytic process *Immunoassay methods ... Manual procedures with multiple steps in sample or reagent preparation or the analytic process *Automated or semi-automated ... Manual procedures with multiple steps in sample or reagent preparation or the analytic process *Automated or semi-automated ...

https://wonder.cdc.gov/wonder/prevguid/p0000215/p0000215.asp

... and case analysis including theoretical sampling (Flyvbjerg, 2011). Collaborators examine transcripts and analytic memos ( ... Preparation includes co-planning with team members from previous years; regular communication with in-country partners; ... Documentation strategies include participatory action research (McIntyre & Lykes, 2004) and indigenous research methods ( ... Teachers have little preparation or opportunities for inservice development. School writing materials are nearly non-existent, ...

https://library.iated.org/view/BARBER2013CRA

... together with theoretical sampling constitutethe core of qualitative analysis in the grounded theory... , Find, read and cite ... but face the lack of clear guidance for using particular analytic methods. The aim of this paper is to propose and discuss the ... Among these is the need for leadership preparation programs to adjust their curricula to train new principals properly. ... The constant comparative method (CCM) together with theoretical sampling con-. stitute the core of qualitative analysis in the ...

https://www.researchgate.net/publication/226282093_A_Purposeful_Approach_to_the_Constant_Comparative_Method_in_the_Analysis_of_Qualitative_Interviews

In short, sample analysis in sample preparation includes sample source management, sample storage, and sample extraction to ... which will be independent of the analytic platform, method and protocol used. This method is not straightforward for MS, but it ... Biological samples analyzed mainly include blood, urine, feces and the like. Sample preparation is generally composed of sample ... Other factors such as sample preparation, sample matrix and residual effects can also lead to data variability. To overcome ...

https://pubs.rsc.org/en/content/articlehtml/2019/ra/c9ra06697g

The analytes were proved to be stable during all samples storage, preparation and analytic procedures. The validated method was ... Then a method of MWCNTs-NH2 modified QuEChERS coupled with HPLC-MS/MS detection of 10 organophosphorus pesticide residues in ... The plasma samples were processed by protein precipitation with organic solvent. NTB-3119, NTB-3190, NTB-3202, NTB-3204 and NTB ... Unlike traditional QuEChERS, only one adsorbent (MWCNTs-NH2) was applied in this method to replace the combined effect of ...

https://pesquisa.bvsalud.org/controlecancer/?lang=pt&q=au:Wang,+Fenghe

The sample preparation steps are usually the most common source of analytic error, whether systematic or random (. Barr et al. ... Most methods for measuring organic chemicals in biologic matrices use a sample preparation step to isolate the target chemical( ... The addition of steps into the sample preparation procedure usually increases the overall imprecision of the method. ... The sample preparation process for inorganic chemicals is typically much simpler than for organic chemicals. In some instances ...

https://stacks.cdc.gov/view/cdc/3866/cdc_3866_DS2.txt

These methods are expensive -€1,000/sample-, time-consuming -24h-, require a laborious sample preparation and a well-equipped ... capacity rapid solution analytic roi chip purpose threats lower environment screening consequently usa 61 harmful separate ... preparation detect action elaborated close market chromatography box pollutants pops shorter expensive ensures detecting ... The most extended analytic methods used nowadays for detecting POPs are gas chromatography and/or mass spectroscopy to separate ...

https://www.fabiodisconzi.com/open-h2020/projects/210851/index.html

Analytic Sample Preparation Methods. *Binding, Competitive. *Biuret Reaction. *Calorimetry. *Chemical Fractionation. *Chemical ...

https://profiles.umassmed.edu/display/127522

The analytic sample consisted of 205 participants. Institutional approval was obtained before participation and all ... We conducted the CFA using the Weighted Least Squares Means and Variance Adjusted (WLSMV) estimation method to account for the ... We recruited 206 Brazilian young adults and adults from universities, colleges, and preparation courses to university ... The sample was 41% female, with a mean age of 21.10 (SD = 4.49),75.6% from colleges/universities. Results of a confirmatory ...

http://pepsic.bvsalud.org/scielo.php?script=sci_arttext&pid=S1413-389X2016000100019

The title of her talk was "The Ten Principles of Green Sample Preparation and the First Metric Tool for Greenness Assessment". ... Scientist from a Greek Academic Institution to be invited to give a keynote lecture in this series of Conferences on Analytic ... most recognized international series of chromatography conferences and covers all separation techniques and analytical methods ... sample pretreatment techniques, chromatographic separation theory and other related techniques. ...

https://www.tuc.gr/index.php?id=3338&L=668&tx_news_pi1%5Bnews%5D=23659&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=451bc4ee2856ca6af49db44b06ca61e5

... sampling techniques and equipment the various sample preparation and analytic methods and common practices for coal sampling ... Sample preparation for coal analysis. Sample preparation of coal Pre-crushing with jaw crushers The first step in the sample ... Sample Preparation for Geochemistry Sample Preparation Packages. Dry jaw crush to -6mm fine pulverize to a nominal 75µm using ... crushers for sample preparation in india. crushers for sample preparation in india. MJ Series Jaw Crusher. vibrating feeder is ...

https://dcstav.cz/2021-21-25/4814.html

https://decs2017.bvsalud.org/E/mnchg2012.txt

https://decs2015.bvsalud.org/E/mnchg2012.txt

https://decs2013.bvsalud.org/P/mnchg2012.txt

https://decs2014.bvsalud.org/I/mnchg2012.txt

https://decs2020.bvsalud.org/E/mnchg2012.txt

https://decs2016.bvsalud.org/E/mnchg2012.txt

https://decs2019.bvsalud.org/E/mnchg2012.txt

https://decs2018.bvsalud.org/P/mnchg2012.txt

https://decs2012.bvsalud.org/P/mnchg2012.txt

... faster sample preparation, and decreased the rate of inadequate smears.Methods: This descriptive-analytic study was conducted ... method was developed to overcome the disadvantages of the previous method expecting to have good features such as high ... that LBC may improve the samples quality, reduce the number of unsatisfactory smear and increases the diagnostic efficacy. ...

https://imsear.searo.who.int/handle/123456789/211494

Analytic Sample Preparation Methods [E05.196.059] * Binding, Competitive [E05.196.080] * Biuret Reaction [E05.196.085] ...

https://meshb.nlm.nih.gov/record/ui?ui=D020349

In 1996, liquid-based cytology (LBC) method was developed to overcome the disadvantages of the previous method expecting to have good features such as high sensitivity, faster sample preparation, and decreased the rate of inadequate smears.Methods: This descriptive-analytic study was conducted at the Department of Pathology and Department of Obstetrics and Gynaecology, government medical college, Datia for the period of 11 months from April 2018 to February 2019. (who.int)
Method: A cross-sectional descriptive-analytic study, performed with 98 female nurses, aged 40-65 years, using the WHOQOL-Bref questionnaire. (bvsalud.org)

The methodology developed from this work is included in the NIOSH Manual of Analytical Methods, Third Edition (4). (cdc.gov)
Availability of NIOSH Manual of Analytical Methods, Third Edition. (cdc.gov)
Browse through our comprehensive range of solvents offered under three portfolio brands for your various applications: Supelco® for analytical methods, Sigma-Aldrich® for classic research and production, and SAFC® for biopharmaceutical and pharmaceutical applications. (sigmaaldrich.com)
The purpose of this chapter is to describe the analytical methods that are available for detecting, and/or measuring, and/or monitoring 2-butoxyethanol, 2-butoxyethanol acetate, their metabolites, and other biomarkers of exposure and effect to these compounds. (cdc.gov)
The intent is not to provide an exhaustive list of analytical methods. (cdc.gov)
Additionally, analytical methods are included that modify previously used methods to obtain lower detection limits, and/or to improve accuracy and precision. (cdc.gov)
Analytical methods for the determination of 2-butoxyethanol, 2-butoxyethanol acetate, and metabolites in biological matrices are shown in Table 6-l. (cdc.gov)
Analytical methods specific for the determination of 2-butoxyethanol and 2-butoxyethanol acetate in environmental matrices are shown in Table 6-2. (cdc.gov)
The HPLC Conference Series is the largest and most recognized international series of chromatography conferences and covers all separation techniques and analytical methods performed in liquid phase, including liquid chromatography (LC), mass spectrometry, electrophoresis, multidimensional LC, SFC technique, sample pretreatment techniques, chromatographic separation theory and other related techniques. (tuc.gr)

FIND) has partnered with Cepheid, Inc. (Sunnyvale, CA) and the University of Medicine and Dentistry of New Jersey (UMDNJ, Newark, NY) to develop a TB-specific automated, cartridge-based nucleic amplification assay (Xpert MTB/RIF) based on the GeneXpert multi-disease platform, currently unique in its simplification of molecular testing with fully integrated and automated sample preparation, amplification and detection required for real-time polymerase chain reaction. (who.int)
Results from analytical studies showed that the Xpert MTB/RIF assay has analytic sensitivity of five genome copies of purified DNA, and 131 cfu/ml of M. tuberculosis spiked into sputum. (who.int)
vMethod applications are pre-configured and verified LC-MS/MS methods that reduce the need for method development - significantly cutting the time, effort and money to deploy a new assay. (sciex.com)
Current methods for detecting BoNT include a mouse bioassay ( 2 - 4 ) and an enzyme-linked immunosorbent assay (ELISA) ( 5 , 6 ). (cdc.gov)
In this assay, mice receiving an intraperitoneal injection containing a sample with more than a minimum lethal dose show symptoms of botulinum intoxication and die ( 2 , 4 ). (cdc.gov)
The methanolic extract of these fruits were subjected to DPPH (2,2-Diphenyl-1-picrylhydrazyl) assay for determining the free radical inhibition property and Folin Ciocalteu's method for quantification of total phenolic content (TPC). (ijpsr.com)

The method of determination in almost all of the methods is gas chromatography (GC) with either electron capture detection (ECD) or flame ionization detection (FID). (cdc.gov)
One of the reported methods used high performance liquid chromatography (HPLC) in conjunction with ultraviolet absorbance detection. (cdc.gov)
1 Techniques involved in metabolomics methods include nuclear magnetic resonance, mass spectrometry (MS), and chromatography. (rsc.org)
A sensitive and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was established for the quantitative analysis of NTB-3119 and its major metabolites NTB-3190, NTB-3202 and NTB-3204 in mouse plasma. (bvsalud.org)
The most extended analytic methods used nowadays for detecting POPs are gas chromatography and/or mass spectroscopy to separate and identify them. (fabiodisconzi.com)
2.3 Dedication of OPZ OH-OPZ and OPZ-SFN in human being plasma Plasma concentrations from the mother or father OPZ and its own metabolites OH-OPZ and OPZ-SFN had been dependant on a nonstereospecific liquid chromatography/tandem mass spectrometric (LC-MS/MS) method. (conferencedequebec.org)
Samples were reconstituted in 100 μl of methanol (adjusted to pH 9.3 with ammonia) and 2 μl supernatant was injected for LC-MS/MS. The high-performance liquid chromatography (HPLC) was performed on an Agilent 1100 system equipped with a Gl311A quaternary-dimension infusion pump a G1367A autosampler a Gl379A vacuum degasser and a G1316A column Org 27569 thermostat (Agilent 1100 Agilent Technologies Inc. Santa Clara California USA). (conferencedequebec.org)
A high-performance liquid chromatography-tandem mass spectrometry method for quantifying active toxin, where the amount of toxin can be correlated to the amount of product peptides, is also described. (cdc.gov)
thin layer chromatography was carried out according to the Stahl method. (hindawi.com)

Our study has shown that the method of sample preparation is an important factor in statistical interpretation of the results of trace element determinations. (usgs.gov)
That value consists of providing access and tools that enable dissemination to a wide range of user communities-- from social scientists to advance knowledge and test theories, to teachers in secondary schools to explain basic statistical and analytic methods, to citizens outside of the higher education and research communities who use the data to generate basic descriptive statistics and graphs. (nsf.gov)
Join this workshop on DataScience with R to gain the skills you need to get started with data science, including statistical and numerical methods and R. You will also learn about visualising data, big data environments and how to interact with linked data in R. Upon completion of this DataScience workshop, you will have an understanding of relevant languages and tools. (datascicon.tech)

The constant comparative method (CCM) together with theoretical sampling constitutethe core of qualitative analysis in the grounded theory approach and in other types ofqualitative research. (researchgate.net)

METHODS: A cross-sectional web survey was conducted among educators to collect information on their experiences teaching during the COVID-19 pandemic throughout the 2020-2021 academic year. (cdc.gov)
Qualtrics, an online survey platform, fielded the survey from May 6 to June 8, 2021 to a national, convenience sample of 1,807 respondents. (cdc.gov)

Combining multiple analytics methods can improve pattern detection and prevent criminal behavior. (sas.com)
From data preparation and data analytics, to data interpretation and reporting, we provide private companies, government entities and individual PhD students the data they need to make informed decisions. (edu.au)

to prepare samples for analytical measurement of components. (bvsalud.org)
Mejia and colleagues demonstrate the changes in measurement and analytic techniques that can lead to different conclusions. (cdc.gov)
Despite its deficiencies, the use of the HiCN method improved haemoglobin measurement in laboratories using automated techniques. (who.int)
On the contrary, it appears that the accuracy of haemoglobin measurement in these countries has detiorated, because the HiCN method is associated with too many constraints. (who.int)
Simple analytical instruments for haemoglobin measurement using the HiCN method, appropriate at the primary level, are not available. (who.int)

The method of determination in all of the methods is GC in conjunction with either flame ionization detection (FID) or mass spectrometric (MS) detection. (cdc.gov)

NHANES uses several methods to monitor the quality of the analyses performed by the contract laboratories. (cdc.gov)
Routine analyses for the glycol ethers in water, including 2-butoxyethanol and its acetate are often not completed because frequently used general-purpose GC/MS methods designed to measure priority pollutants do not readily detect these compounds (Eckel et al. (cdc.gov)

Our SPE well plates allow users to process up to 96 samples simultaneously for increased reproducibility and throughput, while maintaining excellent recoveries and increased sensitivity. (sigmaaldrich.com)

each elemental analysis often required a separate sample-preparation procedure and, consequently, a separate sample. (cdc.gov)
The Xpert inoculation procedure and sample testing generated no detectable infectious aerosols. (who.int)
The four pairs of ions were monitored inside the analytic procedure concurrently. (conferencedequebec.org)
In 1985 WHO established the second haemoglobin cyanide reference material [5] and recommended the HiCN method be given the status of an international reference procedure. (who.int)

Now, however, a method combining new analytic instrumentation and techniques for sample preparation has been developed and is described below. (cdc.gov)
Sample preparation and instrumentation for macromolecular mass spectrometry continue to evolve, making the technique more relevant than ever. (nature.com)

Samples that were negative for HPV and the β-globin control indicated lack of a suitable sample and were considered inadequate for interpretation (Linear Array HPV Genotyping Test Application manual, 2008). (cdc.gov)
As these gigantic libraries were being established in the late 1990s, it became apparent that old, manual methods of compound management were wholly inadequate to meet the demands of the screening systems. (drugdiscoverytrends.com)

primary jaw crusher is the first and also very important step in the process of sample preparation. (dcstav.cz)
The heavy-duty general purpose Essa JC3000 Jaw Crusher is a well proven highly productive primary crusher used in sample preparation and plant appliions. (dcstav.cz)
jaw crusher for make samples in india mine crushing dept. jaw crusher is a stone crusher machine that used for making the larger stone block into smaller ones it usually be used as the primary crusher in the crushing. (dcstav.cz)
Participants are encouraged to bring their own research materials to work with (this could include transcribed primary data, literature files, reports pertinent to the project, etc.), although sample materials can also be provided. (surrey.ac.uk)
Methods: an integrative review that included primary articles indexed in the Latin American and Caribbean Literature in Health Sciences, Medical Literature. (bvsalud.org)
Try not to obtain a method that only delivers a several primary works. (stayatlab.com)

This method, called inductively coupled plasma-atomic emission spectroscopy (ICP-AES), allows simultaneous, multi-element analysis and has been successfully applied to industrial hygiene samples collected from workplace atmospheres (2). (cdc.gov)
Hull RD. Multielement analysis of industrial hygiene samples. (cdc.gov)
Urine samples are processed, stored, and shipped to the Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA for analysis. (cdc.gov)
Vaginal swab samples were processed, stored, and shipped to the Chronic Viral Diseases Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA for analysis. (cdc.gov)
The chapter specifically states that all reagents used to prepare the standard and sample solutions must be free from contaminants, whether the analysis is being done using ICP-OES or ICP-MS. This includes water, if this is what is being used to dilute the sample. (chemistryworld.com)
Solid Phase Extraction (SPE) is a technique designed for rapid and selective sample preparation and purification, prior to chromatographic analysis. (sigmaaldrich.com)
The "QuEChERS" (Dispersive SPE, dSPE) method has emerged as a popular sample preparation technique in the area of multi-residue pesticide analysis for food and agricultural products. (sigmaaldrich.com)
Our wide selection of HPLC columns for small and large molecule analysis allows you to enhance the separation process in terms of retention, resolution, selectivity, and analysis time, all while reducing the time for method development. (sigmaaldrich.com)
Rather, the intention is to identify well-established methods that are used as the standard methods of analysis. (cdc.gov)
5 The research process includes sample preparation, sample analysis, data analysis and metabolic pathway analysis. (rsc.org)
We will offer a rapid method (10 minutes) to detect the most important POPs (ppb) present in food products and water, carrying out an in-situ analysis for less than 100€ per sample. (fabiodisconzi.com)
at present it offers several unique methods of imaging and analysis of solid surfaces at high spatial resolution. (isibrno.cz)
NVivo is a powerful software for the qualitative and mixed-methods analysis of text, audio, video, survey and social media data. (surrey.ac.uk)
The evaluation of the impact of construction products can involve not only chemical analysis of water samples, but also ecotoxicity tests [ 5 ] together with information on the environmental properties of substances. (springeropen.com)
There are different methods of sample preparation for trace element analysis, and the selection of the best method should be fitted for the purpose of a study. (usgs.gov)
We found that dry ashing of the moss samples prior to analysis resulted in considerably lower detection limits of all the elements examined. (usgs.gov)
The purpose of this study was to identify the parameters of critical methods (CMP) and to determine a set of steps to develop and validate the CE-SDS method for analysis of vaccine proteins based on commercially available gel buffers. (electroforese.com)
Time-series analysis: change point methods, forecasting. (edu.au)
Application of epidemiologic methods to current health problems through analysis of secondary data. (sc.edu)
Stool samples were collected and submitted for analysis. (who.int)
An inspection was conducted at a Vietnamese bakery and food samples were collected and submitted for analysis. (who.int)
Salmonella Typhimurium multiple-locus-variable number tandem repeats analysis (MLVA) type 3-10-8-9-523 was identified in 95.9% (47/49) of stool samples. (who.int)
Many of these mutations can be identified through analysis of a blood or tissue sample. (medscape.com)

Trace metals are first extracted from urine samples with a polydithiocarbamate resin (3). (cdc.gov)
This new methodology provides a means for readily establishing baseline data for trace metals in urine samples of both exposed and nonexposed workers. (cdc.gov)
The method is sensitive and rapid enough to analyze urine specimens from subjects suspected of being exposed to a number of important toxic elements, or to evaluate environmental or other non-occupational exposure to these same elements (Thomas, 2013). (cdc.gov)
See Analytic Notes for information on urine lead data from participants aged 6 years and older. (cdc.gov)
This method directly measures multiple metals in urine specimens using mass spectrometry after a simple dilution sample preparation step. (cdc.gov)
Biological samples analyzed mainly include blood, urine, feces and the like. (rsc.org)
The urine sample can be seen under ultraviolet light if fluorescein is added to most antifreeze preparations. (legalprox.com)

Thermo Fisher can also help with proteomics as they have a wide range of range of label free proteomic analytic tools for use with biological applications. (pittcon.org)

Our hypothesis is that the method of sample preparation is important for interpretation of the results. (usgs.gov)

Green Gas Chromatographic Stability-Indicating Method For The Determination Of Lacosamide In Tablets. (pua.edu.eg)

2 In recent years, a large number of domestic and foreign scholars have concentrated on the research of metabolomics, and based on their important position in the field of science, the metabolomics techniques and methods have been optimized. (rsc.org)
Advanced analytical techniques combined with pattern recognition and expert systems are the basic methods of metabolomics research. (rsc.org)
LEM has available standard preparation techniques such as sputtering and evaporation of surface coatings, ion beam thinning, exact cutting. (isibrno.cz)
Every decade or so, questions arise about the impact of new technologies, new management techniques, and an increasing pace of planning and execution on teaching philosophies for management, such as the participant-centered case method. (hbs.edu)

Column-based extraction is a method that employs selective binding of nucleic acid to a solid matrix, such as silica that is packed in a column. (cdc.gov)

Conceptual foundation of epidemiologic research, quantitative methods, and epidemiologic study design. (sc.edu)
Method: Quantitative, analytical, transversal study conducted with 820 elderly subjects registered in the Family Health Strategy (FHS) in the rural area in t. (bvsalud.org)
Using a quantitative-qualitative mixed-methods study design, surveys (n=50) and in-depth interviews (n=18) were conducted during July - August 2015. (bvsalud.org)

This study examined the psychometric properties of the Brazilian-Portuguese version of the Generalized Anxiety Disorder GAD-7 questionnaire in a community sample ( n = 206) of Brazilian adults. (bvsalud.org)
No study will have sufficient sample size to "prove" there is no association. (cdc.gov)
Environmental scanning electron microscopy (ESEM) enables the study of samples of living substances and materials under elevated pressure of surrounding gas up to 3000 Pa. (isibrno.cz)
SUMMING UP: Is the business case study method outmoded? (hbs.edu)
r_ganesh raised a highly relevant point in concluding that "the case study is off the pedestal of method-worshippers. (hbs.edu)
This report provides the results of an international collaborative study evaluating the alkaline haematin detergent (AHD575) method as a reference method for laboratory services with limited resources. (who.int)
Methods: a cross-sectional observational study using a sociodemographic questionnaire and Hospital Anxiety and Depression Scale. (bvsalud.org)
Method: inferential and cross-sectional study, with 121 older adults with Type 2 DM in ambulatory car. (bvsalud.org)
Method: a cross - sectional study carried out with 341 elderly caregivers enrolled in Family Health Units of a city in the countryside of São Paulo State. (bvsalud.org)
Method: it is a cross-sectional and quasi-experimental study approved by the Research Ethics Committee. (bvsalud.org)
Method: Cross-sectional and population-based study, involving 271 older people. (bvsalud.org)
Method: This is a cross-sectional study with adolescents of both sexes, enrolled in the sixth to ninth year in the municipal public education network. (bvsalud.org)
Method: A cross-sectional study with a probabilistic sample of 264 women between 18 and 49 years of age who had or were undergoing planned pregnancies, and were users of two School Health Cen. (bvsalud.org)
This study aims to evaluate the efficiency in reducing pathogens using berry powders in a cream cheese recipe, as compared to the traditional method of manufacturing. (utm.md)
Sample physicians were screened at the time of the survey to assure that they met the above-mentioned criteria, 794 physicians did not meet all of the criteria and were, therefore, ruled out of scope (ineligible) for the study. (cdc.gov)

METHODOLOGY Scope of the Survey The basic sampling unit for the NAMCS is the physician-patient encounter or visit. (cdc.gov)

4 usually cause human botulism (A, B, E, and F). We developed a rapid, mass spectrometry-based method (Endopep-MS) to detect and differentiate active BoNTs A, B, E, and F. This method uses the highly specific protease activity of the toxins with target peptides specific for each toxin serotype. (cdc.gov)
In buffer, this method can detect toxin equivalents of as little as 0.01 mouse lethal dose (MLD) 50 and concentrations as low as 0.62 MLD 50 /mL. (cdc.gov)
GC coupled to FID is one of the most common analytic methods used to detect and quantify ethylene glycol. (legalprox.com)

In MS, samples are ionized, and the resulting ions are identified based on their mass-to-charge (m/z) ratios. (sigmaaldrich.com)

Instrumental methods used for trace element determination require digestion of samples. (usgs.gov)
We also show that this sample preparation technique facilitated the determination of interregional and interspecies differences in the chemistry of trace elements. (usgs.gov)
ABSTRACT Accurate, economical methods for haemoglobin determination by laboratories in countries with limited resources are not available. (who.int)

DPX ® tips provide an INTip solution for complete sample preparation that can be easily automated to achieve extraction in seconds. (sigmaaldrich.com)
Sample preparation is generally composed of sample extraction, compound pretreatment and separation. (rsc.org)

Refer to the Laboratory Method Files section for a detailed description of the laboratory methods used. (cdc.gov)
Unless otherwise stated, we refer to measurements made on biologic samples from the parents or the child but not from the fetus. (cdc.gov)

We characterized common exposures reported by a convenience sample of 202 US patients with coronavirus disease during January-April 2020 and identified factors associated with presumed household transmission. (cdc.gov)

It also includes biotinylated β-globin primers as an internal control for sample amplification. (cdc.gov)
After amplification, the samples were typed by hybridization to the typing strips followed by colorimetric detection. (cdc.gov)

Emphasis on epidemiologic methods basic to investigation, prevention and control of infectious diseases. (sc.edu)

A more sophisticated, integral method measures the absorption of HiCN between 500 nm and 600 nm [4]. (who.int)

Performance assessment calls for clearly defined indicators of each outcome, methods to measure them, strategies for collecting data, and procedures for the synthesis and regular reporting of results. (who.int)

With quantitation of several elements from a single sample, these biologic monitoring data can be collected considerably more efficiently than with traditional analytic methods. (cdc.gov)
In these situations, we measure the level of the chemical in another biologic sample to gauge the internal dose. (cdc.gov)
Under the auspices of the Chemical Exposures Workgroup of the NCS, we developed this article as part of a larger white paper ( NCS 2004 ) to provide guidance on which biologic samples may be most useful for characterizing exposures of interest in the NCS. (cdc.gov)

Primarily responsible for implementation of behavior-analytic services. (livecareer.com)
The Utah Public Health Laboratories (UPHL) and New Mexico Scientific Laboratory Division (NMSLD) provided analytic testing services for all clinical and spinach samples. (cdc.gov)

Despite its substantial heritability, no genetic variants have been detected in previous genome-wide association (GWA) studies, which may be due to relatively small sample sizes of those studies. (springer.com)

which gives the procedures required to make up samples and test for traces of heavy metals such as mercury, cadmium, lead and arsenic. (chemistryworld.com)
Drilled Shafts: Construction Procedures and Design Methods. (virginiadot.org)
Core science job aids are intended to improve skills, methods, and procedures in clinical and public health laboratories. (cdc.gov)

The QuEChERS technique offers the advantage of higher recoveries, accurate results and high sample throughput. (sigmaaldrich.com)
The sampling technique used total samples with a retrieval time of 1.5 months and obtained 16 respondents in each group. (jurnalbidankestrad.com)

These results provide important insights about the election, preparation and functional design as nanoprok for versatile biomedical applications. (electroforese.com)

Liquid samples are introduced into the mass spectrometer through the inductively coupled plasma (ICP) ionization source, reduced to small droplets in an argon aerosol via a nebulizer, and then the droplets enter the ICP. (cdc.gov)

The plasma samples were processed by protein precipitation with organic solvent. (bvsalud.org)
Moreover, the method is sensitive to turbidity at high protein concentrations. (who.int)

NAMCS is a national conducted in 1994 and 1995 to focus on probability sample survey of visits to office-based physicians in the United States. (cdc.gov)
The National Ambulatory Medical Care Survey provides data from samples of patient records selected from a national sample of office-based physicians. (cdc.gov)

Sample preparation methods for air samples are based on the adsorption of the target compounds onto a sorbent such as charcoal (Guest et al. (cdc.gov)
Bottlenecks developed at key points, such as weighing, plating, picking samples, and liquid handling as compound management groups struggled to supply scientists with compounds. (drugdiscoverytrends.com)
The preferred storage method is in dimethyl sulfoxide (DMSO) solution at -20°C. The accuracy and precision of high-throughput screening results depend directly and crucially on the ability of the system to keep the compounds stable, prevent water ingress and compound degradation, accurately track compound identification, and, at a more basic level, run consistently without breaking down. (drugdiscoverytrends.com)

EPID 747 Environmental Epidemiology (3) (Prereq: EPID 700, BIOS 700) (spring of every even year) Emphasis on the epidemiology of selected environmental factors which may affect human health including the identification of health hazards and methods of investigation. (sc.edu)

The application of metabolomics as an important method for studying modern life sciences is closely related to the latest developments in science and technology ( Fig. 1 ). (rsc.org)
Educated clients on important life skills, including housekeeping and food preparation. (livecareer.com)

However, the composition of construction products is not always known, and in view of the variety of possible leachable hazardous substances, their analytic identification can be very complex, particularly with organic substances. (springeropen.com)

and education in the ﬁeld of qualitative methods. (researchgate.net)
This course assumes participants have a broad understanding of qualitative and/or mixed methods methodologies, but assumes no prior knowledge about NVivo. (surrey.ac.uk)

Chemicals and Drugs1

Analytical, Diagnostic and Therapeutic Techniques and Equipment15

Phenomena and Processes3

Technology, Industry, Agriculture2

Health Care5

Geographicals1

Effects of sample dilution, peroxidase concentration, and chloride ion on the measurement of unbound bilirubin in premature newborns. (1/113)

Isolation of polysome-bound mRNA from solid tissues amenable for RT-PCR and profiling experiments. (2/113)

Metabolism, pharmacokinetics, and excretion of a nonpeptidic substance P receptor antagonist, ezlopitant, in normal healthy male volunteers: characterization of polar metabolites by chemical derivatization with dansyl chloride. (3/113)

Arsenic determination in marine sediment using ultrasound for sample preparation. (4/113)

On-plate digestion using a commercial microfraction collector for nano-HPLC matrix-assisted laser desorption/ionization tandem time-of-flight protein analysis. (5/113)

Synthesis of bis(amino alcohol)oxalamides and their usage for the preconcentration of trace metals by cloud point extraction. (6/113)

Triple-phase single-drop microextraction of silver and its determination using graphite-furnace atomic-absorption spectrometry. (7/113)

Moving known libraries to an addressable array: a site-selective hetero-Michael reaction. (8/113)

Analytic Sample Preparation Methods

Specimen Handling

Chemistry Techniques, Analytical

Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

Sensitivity and Specificity

Reproducibility of Results

Polymerase Chain Reaction

United States

Food, Preserved

Cooking

Bisacodyl

Histocytological Preparation Techniques

Longitudinal Studies

Drug Compounding

Cohort Studies

Microwaves

Particle Size

Reference Standards

Tandem Mass Spectrometry

Cross-Sectional Studies

Mass Spectrometry

Effects of sample dilution, peroxidase concentration, and chloride ion on the measurement of unbound bilirubin in premature newborns. (1/113)

Isolation of polysome-bound mRNA from solid tissues amenable for RT-PCR and profiling experiments. (2/113)

Metabolism, pharmacokinetics, and excretion of a nonpeptidic substance P receptor antagonist, ezlopitant, in normal healthy male volunteers: characterization of polar metabolites by chemical derivatization with dansyl chloride. (3/113)

Arsenic determination in marine sediment using ultrasound for sample preparation. (4/113)

On-plate digestion using a commercial microfraction collector for nano-HPLC matrix-assisted laser desorption/ionization tandem time-of-flight protein analysis. (5/113)

Synthesis of bis(amino alcohol)oxalamides and their usage for the preconcentration of trace metals by cloud point extraction. (6/113)

Triple-phase single-drop microextraction of silver and its determination using graphite-furnace atomic-absorption spectrometry. (7/113)

Moving known libraries to an addressable array: a site-selective hetero-Michael reaction. (8/113)

Sample Preparation Techniques | The McCrone Group

Application of the Catalyst Wet Pretreatment Method (CWPM) for catalytic direct synthesis of H2O2

Biotage - New Posters by Biotage R&D Presented at HPLC 2014

Patent US7727727 - Pretreatment method for extraction of nucleic acid from biological samples ... - Google Patents

Tissue Fractionation by Hydrostatic Pressure Cycling Technology: The Unified Sample Preparation Technique for Systems Biology...

Evaluation of Evaporative Sample Preparation Techniques for Alcohol Markers and Drugs of Abuse in Hair Samples | SelectScience

Water | Free Full-Text | Validation of Sample Preparation Methods for Microplastic Analysis in Wastewater Matrices...

Analytical method for the determination of organic acids in dilute acid pretreated biomass hydrolysate by liquid chromatography...

Characterization of Polymer Carbon Sieves, Graphitized Polymer Carbons and Graphitized Carbon Blacks for Sample Preparation...

HyperSep™ SLE Plates (pH 9)

HyperSep™ SLE Cartridges (pH 7)

Doing Drugs II - GERSTEL Solutions No.10

medical science - Is consuming drinking water stored in PET bottles harmful - Skeptics Stack Exchange

Robert Hnasko : USDA ARS

Daniel Spurgin | Authors

Determination of Metals in Copper Concentrate by Advanced Correction Method for Fused Beads | SelectScience

US7112415B2 - Method of preparing cell cultures from biological specimens for assaying a response to an agent - Google...

Material Identification Analysis - TestOilTestOil

X-ray vision achieved by rendering brain samples transparent - The Engineer The Engineer

Materials Characterization - Course

Nacalai USA, Inc. | Product | Primary Antibody

Food Technol. Biotechnol.

LCMS Sample Preparation - Laboratory | Pall Corporation

Untitled Document

3:57 上午

Anti-C3 antibody [C3], C-term (GTX101316) | GeneTex

BADG November 2014: Session Abstract - CASSS

NGS sample preparation

Roasted Brussel Sprouts - Healing Cuisine

Sample Preparation (QC)

Chromatography Sample Preparation Downloads on Environmental XPRT

Sample Preparation System - Products, news, whitepaper, companies, specialist information

Is Simpler Better? How Easy Sample Preparation Can Hinder Progress

RFA-CA-07-003: Innovations in Cancer Sample Preparation (R21, R33, R21/R33)

Sample Preparation | VWR

Grinding | Näytteen valmistus | Labnet

Sample preparation | Labnet

Imactiv-3D: Our expertise to enhance your research

VZV - Automated - QIAGEN

CMV - Automated - QIAGEN

Sample Preparation Techniques in Analytical Chemistry - Google Books

A comparison of two common sample preparation techniques for lipid and fatty acid analysis in three different coral morphotypes...

Comparing pretreatment methods to improve the methane yield of microalgae grown in wastewater

Validation of a modified pre-lysis sample preparation technique for flow cytometric minimal residual disease assessment in...

Saccharification of recalcitrant biomass and integration options for lignocellulosic sugars from Catchlight Energys sugar...

A fluidic fiber platform modified for the selective extraction and on by Natasha Khan

GERSTEL, Inc. USA

Biography - NEMC

Publications | Max Planck Institute for Biophysical Chemistry

IST Austria | Electron Microscopy Facility

Improved microbial conversion of de-oiled Jatropha waste into biohydrogen via inoculum pretreatment: process optimization by...