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Odintsova TA, Tretyakov MY, Simonova AA, Ptashnik IV, Pirali O, Campargue A. Measurement and temperature dependence of the water vapor self-continuum between 70 and 700 cm−1. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128046] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abbasi F, Fakhur-Un-Nisa T, Liu J, Luo X, Abbasi IHR. Low digestibility of phytate phosphorus, their impacts on the environment, and phytase opportunity in the poultry industry. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:9469-9479. [PMID: 30788700 DOI: 10.1007/s11356-018-4000-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Phosphorus is an essential macro-mineral nutrient for poultry, needed for the body growth, development of bones, genomic function, good quality flesh, and eggs production. The imbalance of organic phosphorus sources in the diet mostly affect the phosphorus digestibility, reduces the poultry performance and health, and increases the environmental pollution burden. A study was reviewed to estimate the low phytate phosphorus digestibility of ingredients in poultry diet and their impacts on environmental ecosystem and opportunity of phytase supplementation. Plant ingredients mostly used in poultry diets are rich in phytate phosphorus. The phytate phosphorus digestibility and utilization is low in the gut of birds which leads to decrease other nutrients digestibility and increase excessive excretion of phosphorus with additional nutrients in the manure. When that manure applied to the lands containing excessive residual phosphorus and additional nutrients which pollute soil, groundwater disturbed the entire ecosystem. This issue is developed by poultry due to lack of digestive enzyme phytase which promotes the phytate phosphorus during digestion and reduces the excessive losses of phosphorus in excreta. To overcome this matter, the addition of mostly exogenous phospho-hydrolytic phytase enzymes in the diet, i.e. Escherichia coli, Peniophora lycii, Aspergillus niger, and Ficum, are the possible ways to increase the digestibility and utilization of phytate phosphorus and promote the stepwise release of phosphorus from phytate and significantly decrease phosphorus excretion. The aim of this review is to highlight the role of phytase supplementation in the poultry feeding, improvement of phytate phosphorus digestibility with performance, and reduction of phosphorus pollution from the environment.
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Affiliation(s)
- Farzana Abbasi
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
| | | | - Jingbo Liu
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
| | - Xuegang Luo
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China.
| | - Imtiaz Hussain Raja Abbasi
- Department of Animal Nutrition, Faculty of Animal Production and Technology, Cholistan University of Veterinary and Animal Sciences, CUVAS, Bahawalpur, Punjab, Pakistan.
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Ventrillard I, Romanini D, Mondelain D, Campargue A. Accurate measurements and temperature dependence of the water vapor self-continuum absorption in the 2.1 μm atmospheric window. J Chem Phys 2016; 143:134304. [PMID: 26450311 DOI: 10.1063/1.4931811] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In spite of its importance for the evaluation of the Earth radiative budget, thus for climate change, very few measurements of the water vapor continuum are available in the near infrared atmospheric windows especially at temperature conditions relevant for our atmosphere. In addition, as a result of the difficulty to measure weak broadband absorption signals, the few available measurements show large disagreements. We report here accurate measurements of the water vapor self-continuum absorption in the 2.1 μm window by Optical Feedback Cavity Enhanced Absorption Spectroscopy (OF-CEAS) for two spectral points located at the low energy edge and at the center of the 2.1 μm transparency window, at 4302 and 4723 cm(-1), respectively. Self-continuum cross sections, CS, were retrieved with a few % relative uncertainty, from the quadratic dependence of the spectrum base line level measured as a function of water vapor pressure, between 0 and 16 Torr. At 296 K, the CS value at 4302 cm(-1) is found 40% higher than predicted by the MT_CKD V2.5 model, while at 4723 cm(-1), our value is 5 times larger than the MT_CKD value. On the other hand, these OF-CEAS CS values are significantly smaller than recent measurements by Fourier transform spectroscopy at room temperature. The temperature dependence of the self-continuum cross sections was also investigated for temperatures between 296 K and 323 K (23-50 °C). The derived temperature variation is found to be similar to that derived from previous Fourier transform spectrometer (FTS) measurements performed at higher temperatures, between 350 K and 472 K. The whole set of measurements spanning the 296-472 K temperature range follows a simple exponential law in 1/T with a slope close to the dissociation energy of the water dimer, D0 ≈ 1100 cm(-1).
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Affiliation(s)
- I Ventrillard
- LIPhy, Université Grenoble Alpes, F-38000 Grenoble, France
| | - D Romanini
- LIPhy, Université Grenoble Alpes, F-38000 Grenoble, France
| | - D Mondelain
- LIPhy, Université Grenoble Alpes, F-38000 Grenoble, France
| | - A Campargue
- LIPhy, Université Grenoble Alpes, F-38000 Grenoble, France
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Mondelain D, Vasilchenko S, Čermák P, Kassi S, Campargue A. The self- and foreign-absorption continua of water vapor by cavity ring-down spectroscopy near 2.35 μm. Phys Chem Chem Phys 2015; 17:17762-70. [DOI: 10.1039/c5cp01238d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water vapor self and foreign continuum absorption cross sections are measured with unprecedented accuracy around 2.35 μm using high sensitivity CRDS.
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Affiliation(s)
| | | | - P. Čermák
- Univ. Grenoble Alpes
- LIPhy
- France
- CNRS
- LIPhy
| | - S. Kassi
- Univ. Grenoble Alpes
- LIPhy
- France
- CNRS
- LIPhy
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Serov EA, Koshelev MA, Odintsova TA, Parshin VV, Tretyakov MY. Rotationally resolved water dimer spectra in atmospheric air and pure water vapour in the 188–258 GHz range. Phys Chem Chem Phys 2014; 16:26221-33. [DOI: 10.1039/c4cp03252g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Millimeter wave spectra of the water dimer under the conditions close to the atmospheric ones in pure water vapour and its mixture with air are detected and quantitatively analyzed.
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Affiliation(s)
- E. A. Serov
- Institute of Applied Physics of the Russian Academy of Sciences
- 46 Ul'yanov str
- Nizhny Novgorod, Russian Federation
| | - M. A. Koshelev
- Institute of Applied Physics of the Russian Academy of Sciences
- 46 Ul'yanov str
- Nizhny Novgorod, Russian Federation
| | - T. A. Odintsova
- Institute of Applied Physics of the Russian Academy of Sciences
- 46 Ul'yanov str
- Nizhny Novgorod, Russian Federation
| | - V. V. Parshin
- Institute of Applied Physics of the Russian Academy of Sciences
- 46 Ul'yanov str
- Nizhny Novgorod, Russian Federation
| | - M. Yu. Tretyakov
- Institute of Applied Physics of the Russian Academy of Sciences
- 46 Ul'yanov str
- Nizhny Novgorod, Russian Federation
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Newman SM, Green PD, Ptashnik IV, Gardiner TD, Coleman MD, McPheat RA, Smith KM. Airborne and satellite remote sensing of the mid-infrared water vapour continuum. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2012; 370:2611-2636. [PMID: 22547235 DOI: 10.1098/rsta.2011.0223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Remote sensing of the atmosphere from space plays an increasingly important role in weather forecasting. Exploiting observations from the latest generation of weather satellites relies on an accurate knowledge of fundamental spectroscopy, including the water vapour continuum absorption. Field campaigns involving the Facility for Airborne Atmospheric Measurements research aircraft have collected a comprehensive dataset, comprising remotely sensed infrared radiance observations collocated with accurate measurements of the temperature and humidity structure of the atmosphere. These field measurements have been used to validate the strength of the infrared water vapour continuum in comparison with the latest laboratory measurements. The recent substantial changes to self-continuum coefficients in the widely used MT_CKD (Mlawer-Tobin-Clough-Kneizys-Davies) model between 2400 and 3200 cm(-1) are shown to be appropriate and in agreement with field measurements. Results for the foreign continuum in the 1300-2000 cm(-1) band suggest a weak temperature dependence that is not currently included in atmospheric models. A one-dimensional variational retrieval experiment is performed that shows a small positive benefit from using new laboratory-derived continuum coefficients for humidity retrievals.
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Ptashnik IV, McPheat RA, Shine KP, Smith KM, Williams RG. Water vapor self-continuum absorption in near-infrared windows derived from laboratory measurements. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd015603] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Leforestier C, Tipping RH, Ma Q. Temperature dependences of mechanisms responsible for the water-vapor continuum absorption. II. Dimers and collision-induced absorption. J Chem Phys 2010; 132:164302. [DOI: 10.1063/1.3384653] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C Leforestier
- Institut Charles Gerhardt CNRS-5253, CC15.01, Université Montpellier 2, 34095 Montpellier, France
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Paynter DJ, Ptashnik IV, Shine KP, Smith KM, McPheat R, Williams RG. Laboratory measurements of the water vapor continuum in the 1200–8000 cm−1region between 293 K and 351 K. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd011355] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Shank A, Wang Y, Kaledin A, Braams BJ, Bowman JM. Accurate ab initio and “hybrid” potential energy surfaces, intramolecular vibrational energies, and classical ir spectrum of the water dimer. J Chem Phys 2009; 130:144314. [DOI: 10.1063/1.3112403] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Rowe PM, Walden VP. Improved measurements of the foreign-broadened continuum of water vapor in the 6.3 microm band at -30 degrees C. APPLIED OPTICS 2009; 48:1358-1365. [PMID: 19252637 DOI: 10.1364/ao.48.001358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Atmospheric emission in the nu(2) band of water vapor by the foreign-broadened continuum (1300-2000 cm(-1)) is important for retrievals of upper tropospheric water vapor. Previous work reported continuum coefficients retrieved from two downwelling emission measurements made with the Polar Atmospheric Emitted Radiance Interferometer (PAERI) at temperatures characteristic of the upper troposphere (below -25 degrees C) at Dome C, Antarctica. These results are improved upon here using 19 different measurements. Improvements have been made to the PAERI radiance calibration, the radiance simulations, and the error analysis. Compared to the Mlawer, Tobin, Clough, Kneizys, Davies continuum, the retrieved continuum is found to be 20% to 50% lower from 1350 to 1490 cm(-1) and 0% to 20% higher from 1850 to 1980 cm(-1).
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Affiliation(s)
- Penny M Rowe
- Department of Geography, University of Idaho, Moscow, Idaho 83843, USA.
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Lee MS, Baletto F, Kanhere DG, Scandolo S. Far-infrared absorption of water clusters by first-principles molecular dynamics. J Chem Phys 2008; 128:214506. [PMID: 18537432 DOI: 10.1063/1.2933248] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Based on first-principle molecular dynamic simulations, we calculate the far-infrared spectra of small water clusters (H(2)O)(n) (n = 2, 4, 6) at frequencies below 1000 cm(-1) and at 80 K and at atmospheric temperature (T>200 K). We find that cluster size and temperature affect the spectra significantly. The effect of the cluster size is similar to the one reported for confined water. Temperature changes not only the shape of the spectra but also the total strength of the absorption, a consequence of the complete anharmonic nature of the classical dynamics at high temperature. In particular, we find that in the frequency region up to 320 cm(-1), the absorption strength per molecule of the water dimer at 220 K is significantly larger than that of bulk liquid water, while tetramer and hexamer show bulklike strengths. However, the absorption strength of the dimer throughout the far-infrared region is too small to explain the measured vapor absorption continuum, which must therefore be dominated by other mechanisms.
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Affiliation(s)
- Mal-Soon Lee
- The Abdus Salam International Centre for Theoretical Physics, I-34014 Trieste, Italy
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