Vocative in documents

Purpose of study: The purpose of the dissertation is to conduct a comprehensive and systematic study of vocabularies in Vietnamese Administrative Documents to clarify the characteristics of Administrative Documents and communicate in the administrative field, especially vocative in communication by Administrative Documents. Thereby contributing to improving Administrative Documents drafting skills, overcoming shortcomings in drafting practice to standardize Vietnamese Administrative Documents.

27p thebadguys 10-06-2021 11 3   Download

In order to assess the current and future transport situation from the economic and financial point of view, vehicle operating cost (VOC) was estimated by type of vehicle. The vehicle classification is consistent with that adopted in the traffic count surveys conducted in the Study. 

22p tuanhung_vn 18-04-2015 92 9   Download

Ozone is a gas that is composed of three oxygen atoms (O3). It is created by the oxides in the air’s nitrogen reaction with volatile organic compounds (VOC). Normally we think of ozone being higher in the atmosphere, also known as “good” ozone. However, when the conditions are right, ozone can occur at ground level, which is known as “bad” ozone. Sunlight and hot weather cause “bad” ozone in harmful concentrations. Thus in the summertime, urban areas have to be concerned about the amount of “bad” ozone. Why do you think urban areas are more...

6p tainhacmienphi 19-02-2013 52 3   Download

Experts agree that source control is the only completely effective way to remove pollutants from indoor environments. They also agree that total eradication of indoor air pollutants is often not feasible or practical. A more realistic goal is to use building materials, furnishings, finishes, office equipment, cleaning products and processes that emit low levels of VOCs.

7p doipassword 01-02-2013 52 3   Download

Volatile organic compounds (VOCs) in breath may contain biomarkers of active pulmonary tuberculosis derived from the infectious organism (metabolites of Mycobacterium tuberculosis) and from the infected host (products of oxidative stress). Methods: We analyzed breath VOCs in 226 symptomatic high-risk patients in USA, Philippines, and UK, using gas chromatography/mass spectroscopy. Diagnosis of disease was based on sputum culture, smear microscopy, chest radiography and clinical suspicion of tuberculosis (CSTB). Chromatograms were converted to a series of 8 s overlapping time slices.

7p taisaocothedung 12-01-2013 49 1   Download

The current global epidemic of pulmonary tuberculosis has highlighted the need for new screening tests that are rapid and accurate. The social burden of pulmonary tuberculosis has increased because many patients are also infected with human immunodeficiency virus (HIV), and the rates of multidrug-resistant tuberculosis are increasing.1 However, screening technology has not changed greatly during the past several decades. Many highburden countries depend upon sputum smears and chest radiographs, supplemented by cultures when resources permit.

9p taisaocothedung 12-01-2013 57 3   Download

This study, the first to investigate workplace contamination in areas in Ghana where e-waste recycling and disposal is carried out, focussed on the main centre for this type of work, at the Agbogbloshie scrap market in Ghana’s capital, Accra. One of the numerous similar, though far smaller, operations that take place throughout Ghana was also investigated, at the location of a scrap dealer in Korforidua, a smaller city to the north of Accra. At these workshops, e-waste is recycled in a crude way, primarily involving manual disassembly and open burning to isolate copper from plastics.

10p cao_can 02-01-2013 46 2   Download

Soil samples stored in sealed vials have been shown to undergo significant biodegradation over time periods greater than 48 hours. Holding time guidelines for VOCs are given in SW846, Method 5035A, Appendix A, Table A.1 “Recommended VOC Sample Preservation Techniques and Holding Times.” The holding time for preserved soil samples should be interpreted as 14 days from the time of sample collection (stored at 4±2o C).

9p cao_can 02-01-2013 54 2   Download

Further, solid matrices that are not amenable to the use of a coring technique should be collected in such a way as to preserve their integrity. Transferring of these solids with spatulas or similar devices into sampling containers is discouraged as this disrupts the sample pore spaces and greatly increases the sample surface area available for volatilization. For soil piles, fresh (unexposed), soil at an adequate depth (representative of concentrations from the interior of the pile) should be sampled.

17p cao_can 02-01-2013 58 2   Download

To help ensure accurate measurements, Region 9 recommends that these guidelines be followed whenever VOCs in soil or other solid matrices are sampled and analyzed. 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.

6p cao_can 02-01-2013 51 4   Download

However, these guidelines do not address the impact of drilling techniques on the collection of a representative VOC sample. Therefore, site/program QAPPs and SAPs should address the impact of all collection techniques on sample integrity and select those appropriate for the project data quality objectives (DQOs).

0p cao_can 02-01-2013 47 2   Download

EPA Region 9 has developed technical guidelines to help ensure that sampling and analyzing for Volatile Organic Compounds (VOCs) in soil and solid matrices are conducted in a manner that achieves accurate, technically defensible data. Region 9’s guidelines, which are intended to apply whenever VOC sampling in and analysis of soil and solid matrices are conducted, are consistent with United States Environmental Protection Agency (USEPA) Office of Solid Waste test methods.

23p cao_can 02-01-2013 66 3   Download

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.

0p cao_can 02-01-2013 43 3   Download

The complexity of the volatile organic compound (VOC) mixture in the Houston area makes studies of the air quality in that area very challenging. In this paper, a novel factor analysis model, where the normal chemical mass balance model was augmented by a parallel equation that accounted for wind speed and direction, temperature, and weekend/weekday effects, was fitted with a multilinear engine (ME) to provide identification and apportionment of the VOC sources at the La Porte Municipal Airport site in Houston during the Texas Air Quality Study (TexAQS) 2000.

10p cao_can 02-01-2013 54 2   Download

Copper fungicides are environmentally unfriendly. They are very toxic to fish and aquatic invertebrates, such as crab, shrimp and oysters. There are cases where most animal life in soil, including large earthworms, have been eliminated by the extensive use of copper-containing fungicides in orchards. It is strongly bioaccumulated and is very persistent. Once a soil is contaminated with copper, there is no practical way to remove it. The organic insecticide rotenone has been found to be toxic to pigs, rats and dogs and is is very toxic to fish. It causes skin and eye irritations.

15p cao_can 02-01-2013 31 3   Download

The coexisting systemof VOCs is complex. A small change in environmental conditions (e.g., temperature) may result in changes on VOC concentrations, and also some VOCs may be involved in chemical reactions during the trans- portation. Meanwhile, as a consequence of high density of petroleumrefineries, synthetic organic chemical plants, and variousmobile sources, the formation rate and concentration of ozone in theHouston area are extremely high, and propene becomes a dominant reactive hydrocarbon (20).

10p cao_can 02-01-2013 58 3   Download

The sampling period for the data in this study was from 08/20/00 to 09/08/00, and the most sampling frequencies were about 1/4 6min 1, but the frequencies for some periods were 1min 1. All the sampleswere used for analysis to ensure a sufficiency of samples.

6p cao_can 02-01-2013 39 3   Download

While it has been demonstrated that these materials have good sensitivity to polar VOCs, such as alcohols and acetone, 11,12 their rather poor response to nonpolar analytes has been viewed as a major drawback. In this report, we explored two ways to improve the sensor performance of regioregular polythiophene. The first approach is to add a second polymer at the end of the polythiophene chain to form a block copolymer. This second polymer interacts with the analytes in different ways, thus adding another dimensionality to the sensing response of the material.

20p cao_can 02-01-2013 44 5   Download

We are giving increasing prominence to environmental ‘performance indicators’ as complements to traditional emission limits. Emission data can be normalised for the scale of process operation and/or environmental burden to generate performance data that are valuable in targeting regulatory effort at the most important environmental issues. Performance indicators can address not only emissions (to air, water and waste) but also raw material use (including water and energy).

0p cao_can 02-01-2013 61 3   Download

Regioregular polythiophene-based conductive copolymers with highly crystalline nanostructures are shown to hold considerable promise as the active layer in volatile organic compound (VOC) chemresistor sensors. While the regioregular polythiophene polymer chain provides a charge conduction path, its chemical sensing selectivity and sensitivity can be altered either by incorporating a second polymer to form a block copolymer or by making a random copolymer of polythiophene with different alkyl side chains.

14p cao_can 02-01-2013 50 3   Download