Atmospheric pressure

Ebook "Fruit and vegetable storage: Hypobaric, hyperbaric and controlled atmosphere" reviews the effects of increasing and reducing atmospheric pressure on the postharvest life of fruit and vegetables. The text covers the common methods and technologies used and evaluates the history and benefits of hypobaric and hyperbaric storage. Both of these techniques have the potential to address quantitative and qualitative challenges in the postharvest sector of the fresh fruit and vegetables industry.

137p tudohanhtau1006 29-03-2024 5 1   Download

The results show that the quality factor of micro-cantilever and micro-bridge resonators increases as both humidity and temperature rise in atmospheric pressure and gas rarefaction. Furthermore, the quality factor of a micro-bridge resonator with changes in humidity and temperature is significantly higher than that of a micro-cantilever resonator in atmospheric pressure and gas rarefaction.

7p viellison 28-03-2024 8 1   Download

Ebook "Mass spectrometry: Principles and applications (Third edition)" provides students with a complete overview of the principles, theories and key applications of modern mass spectrometry. All instrumental aspects of mass spectrometry are clearly and concisely described: sources, analysers and detectors. Tandem mass spectrometry is introduced early on and then developed in more detail in a later chapter.

502p coduathanh1122 27-03-2024 6 1   Download

This specification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.

7p hth_hn_vn 10-12-2023 7 4   Download

Ebook "Advances in poultry welfare" includes content: Overview of commercial poultry production systems and their main welfare challenges, the effects of hatchery practices on the welfare of poultry, rearing young birds for adaptability, electrical stunning of poultry, gas and low atmospheric pressure stunning,.... and other contents.

169p oursky06 13-10-2023 4 2   Download

Part 1 book "Fundamentals of physical geography" includes content: Physical geography - earth environments and systems; representations of earth; solar energy and atmospheric heating; atmospheric pressure, winds, and circulation patterns; humidity, condensation, and precipitation; air masses and weather systems; climate classification - tropical, arid, and mesothermal climate regions; microthermal, polar, and highland climate regions; climate change.

226p oursky02 07-08-2023 8 4   Download

In this study, a resort wastewater treatment system using plasma at low temperature and atmospheric pressure was designed and developed to solve the above disadvantages. An 480l/h treatment system was completed and assembled in the Sam Son resort, Thanh Hoa to test and evaluate the treatment efficiency.

7p vidoctorstrange 06-05-2023 6 3   Download

In this work, high-throughput (HT) methodology is employed to overcome this problem by testing many different catalyst formulations. Fast performance screening of 40 different α-Al2 O3 supported FeMn based catalysts promoted with Cu, K and Ni, using different impregnation agents, was performed in a HT test system at atmospheric pressure. Promising catalyst candidates identified by HT analysis were further subjected to high pressure FTS in a conventional system.

15p lyhuyenthu 31-01-2023 3 2   Download

Insect repellents (IRs) are a group of organic chemicals whose function is to prevent the ability of insects of landing in a surface. These compounds have been found in the environment and may pose a risk to non-target organisms.

8p viginny 23-12-2022 9 3   Download

There is a long-standing and growing interest in Molten Salt Reactors (MSRs) mainly because of their potential advantages in terms of safety, sustainable fuel cycle, and the high melting and boiling points of salt which allow operations at high temperatures and atmospheric pressure with potential merits in terms of cost

12p vironald 15-12-2022 15 5   Download

For advanced research reactor designs that have a high core power with downward coolant flow in the core, it is important to analyze a unique postulated pipe break scenario under sub-atmospheric pressures. In order to benchmark the capability of thermal–hydraulic codes such as TRACE to predict flow behavior under these conditions, we must first compare TRACE analyses to reference experimental data for air–water flow near atmospheric pressure and temperature conditions.

11p vironald 15-12-2022 10 3   Download

The activity of n-hexane isomerization with 0,8 %kl Pd/HZSM-5 was studied in a micro reactor in the temperature range of 225-325oC at 0,1 Mpa with the molar ratio H2/ hydrocarbon of 5.92, n-hexane concentration of 9.2 %mol, GHSV 2698 h-1 at atmospheric pressure.

5p vichristinelagarde 04-07-2022 7 1   Download

The copper(II) complex of N -[ethyl(butyl)carbamothioyl]-3,5-dinitrobenzamide (1) has been synthesized and characterized by elemental analysis, IR spectroscopy, and atmospheric pressure chemical ionization-mass spectrometry. Thermogravimetric analysis shows that complex 2 decomposes in 2 steps to form copper sulfide. The complex was used as a single-source precursor for the deposition of copper sulfide thin film by aerosol-assisted chemical vapor deposition at 350◦C.

9p langthannam 29-12-2021 8 0   Download

Modified mesoporous HZSM-5 catalysts were prepared by controlled desilication using a mixture of NaOH and TPAOH (tetrapropylammonium hydroxide) and impregnation of metals (Mn, Ce, and Ba) and metalloid B. The catalytic performances of all prepared catalysts for methanol to propylene (MTP) reaction were evaluated in a fixed bed reactor under atmospheric pressure at 480°C. The parent and modified catalysts were characterized by XRD, ICP-OES, FE-SEM, NH3 -TPD, FT-IR, BET, and TGA techniques.

23p tudichquannguyet 29-11-2021 8 1   Download

This work reports the synthesis and properties of a new membrane based on polyvinyl chloride (PVC) grafting with polyacrylic acid (PAA) using argon (Ar) plasma. The membranes of PVC were synthesized by solutioncasting method, where PAA was deposited as an ultrathin film onto PVC using dielectric barrier discharge at atmospheric pressure with Ar gas. The surface characteristics and chemical composition of the modified membranes were analyzed by water contact angle, scanning electron microscopy, and Fourier transform infrared spectroscopy.

11p tudichquannguyet 29-11-2021 12 2   Download

Two methods were proposed to calculate the thermodynamic parameters of porous ceramic compacts depending on their molar volume change with applied pressure and heating temperature, respectively. Molar volume of the porous α-alumina (α-Al 2 O3) compact was evaluated according to literature depending on both the applied pressure at room temperature and the heating temperature at atmospheric pressure. The isothermal compressibility coefficient, Gibbs energy, and work done on the compact by compression were calculated.

8p tudichquannguyet 29-11-2021 8 1   Download

CO2 valorization through chemical reactions attracts significant attention due to the mitigation of greenhouse gas effects. This article covers the catalytic hydrogenation of CO2 to methanol and dimethyl ether using Cu-Ho-Ga containing ZSM-5 and g-Al2O3 at atmospheric pressure and at temperatures of 210°C and 260°C using a CO2:H2 feed ratio of 1:3 and 1:9. In addition, the thermodynamic limitations of methanol and DME formation from CO2 was investigated at a temperature range of 100–400°C.

17p tudichquannguyet 29-11-2021 9 3   Download

Lecture General Chemistry 1 - Chapter 10: Gases. After studying this section will help you understand: calculate pressure and convert between pressure units with an emphasis on torr and atmospheres; explain how the gas laws relate to the ideal-gas equation and apply the gas laws in calculations; calculate the density or molecular weight of a gas,...

21p diepchilang 26-08-2021 9 1   Download

This work numerically studies the evaporation characteristics of 6 typical gas turbine fuels (JP-4, JP-5, JP-7, RT, Jet A-1, and TS-1, respectively). In this work, the influence of ambient temperature and liquid properties on the droplet lifetime is examined. At the same initial conditions (e.g. fuel temperature Ts0 = 300 K, droplet diameter D0 = 1 mm and atmospheric pressure p = 101.33 kPa) and low ambient temperature (e.g. 500 K), significant differences in evaporation characteristics among these fuels are observed. JP-4 has the longest droplet lifetime while JP-7’s is the shortest.

13p cothumenhmong11 05-05-2021 21 2   Download

In order to investigate hydrodynamic phenomena in two-phase flow conditions in nuclear safety analysis, a series of two-phase flow experiments were conducted using a single flow channel in which air and water were simultaneously injected into the test section. The experiments under atmospheric pressure conditions were carried out with the water velocity and the air velocity covering the ranges from 0.2 to 1.5 m/s and 0.05 to 0.2 m/s, respectively.

11p trinhthamhodang1218 14-03-2021 4 1   Download