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Journal articles on the topic 'Controlled respiration'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Holmqvist, Fredrik, Martin Stridh, Johan E. P. Waktare, et al. "Rapid fluctuations in atrial fibrillatory electrophysiology detected during controlled respiration." American Journal of Physiology-Heart and Circulatory Physiology 289, no. 2 (2005): H754—H760. http://dx.doi.org/10.1152/ajpheart.00075.2005.

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Heart rate during sinus rhythm is modulated through the autonomic nervous system, which generates short-term oscillations. The high-frequency components in these oscillations are associated with respiration, causing sinus arrhythmia, mediated by the parasympathetic nervous system. In this study, we evaluated whether slow, controlled respiration causes cyclic fluctuations in the frequency of the fibrillating atria. Eight patients (four women; median age 63 yr, range 53–68 yr) with chronic atrial fibrillation (AF) and third-degree atrioventricular block treated by permanent pacemaker were studie

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2

Rosenthal, Frank S., and Changhong Li. "A servo-controlled respiration system for inhalation studies in anesthetized animals." Journal of Applied Physiology 83, no. 5 (1997): 1768–74. http://dx.doi.org/10.1152/jappl.1997.83.5.1768.

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Rosenthal, Frank S., and Changhong Li. A servo-controlled respiration system for inhalation studies in anesthetized animals. J. Appl. Physiol. 83(5): 1768–1774, 1997.—To facilitate aerosol deposition experiments and aerosol exposures in anesthetized animals, a servo-controlled respiration system was developed and tested. The system induces ventilation by varying extrathoracic pressure in a whole body respirator in which an intubated animal is placed. The pressure inside the whole body respirator is varied with a three-way servo-controlled spool valve connected to sources of positive and negati

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3

De Pascalis, Vilfredo, Antonella Anello, and Riccardo Venturing. "Changes in Heart Rate during Feedback Control of Respiration." Perceptual and Motor Skills 63, no. 1 (1986): 87–96. http://dx.doi.org/10.2466/pms.1986.63.1.87.

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Subjects received one of eight treatments: (1) practice at increasing heart rate with heart-rate feedback, (2) practice at decreasing heart rate with heart-rate feedback, (3) practice at increasing heart rate without heart-rate feedback, (4) practice at decreasing heart rate without heart-rate feedback, (5) practice at increasing respiration rate with respiratory feedback, (6) practice at decreasing respiration rate with respiratory feedback, (7) practice at increasing respiration rate with respiratory instructions only, (8) practice at decreasing respiration rate with respiratory instructions

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4

Collier, Donald E. "No difference in leaf respiration rates among temperate, subarctic, and arctic species grown under controlled conditions." Canadian Journal of Botany 74, no. 2 (1996): 317–20. http://dx.doi.org/10.1139/b96-039.

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To test the theory that leaf respiration rates are inherently higher in arctic species compared with temperate species, a total of 35 species from temperate, subarctic, and arctic locations were grown under controlled conditions and leaf respiration rates were measured. Regardless of growth temperature (either 10 or 20 °C), leaf respiration rates measured at the growth temperature were independent of a species' geographic origin. In addition, salicylhydroxamic acid inhibited the alternative oxidase equally in all groups of species. Acclimation of leaf respiration to temperature was observed in

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5

Gilgoff, Irene S., Donna M. Barras, Michelle Sellers Jones, and Hazel V. Adkins. "Neck Breathing: A Form of Voluntary Respiration for the Spine-Injured Ventilator-Dependent Quadriplegic Child." Pediatrics 82, no. 5 (1988): 741–45. http://dx.doi.org/10.1542/peds.82.5.741.

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Children with respirator-dependent quadriplegia because of C-2 spinal cord injuries are now surviving the acute stages of their injury. The major cause of mortality and morbidity in the chronic stage is due to respiratory complications. Surveillance, 24 h/d, is the best way to prevent accidental disconnection of respirator equipment from the patient and its inherent catastrophic consequences. The constant risk of disconnection adds tension to the home environment and takes away from the patient any degree of independence or privacy. Because of this, an alternative method of respiration using n

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6

Collalti, Alessio, Mark G. Tjoelker, Günter Hoch, et al. "Plant respiration: Controlled by photosynthesis or biomass?" Global Change Biology 26, no. 3 (2019): 1739–53. http://dx.doi.org/10.1111/gcb.14857.

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7

Kole, N. K., and Suresh Prasad. "Respiration rate and heat of respiration of some fruits under controlled atmosphere conditions." International Journal of Refrigeration 17, no. 3 (1994): 199–204. http://dx.doi.org/10.1016/0140-7007(94)90019-1.

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8

Romanchuk, AP, and OV Guziy. "[Tests with controlled respiration in assessing the variability of the parameters of the cardiorespiratory system of athletes]." Scientific notes International Humanitarian University 27 (June 5, 2017): 84–90. https://doi.org/10.5281/zenodo.802943.

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The features of the evaluation of the results of the study of the parameters of the variability of the cardiorespiratory system are shown using tests with controlled respiration 6 and 15 times per minute. As a result of the survey of 1930 male athletes, the ranges of normative values of heart rate variability, systolic and diastolic arterial pressure, as well as respiration in case of spontaneous and controlled breathing were determined.

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9

Romanchuk, A.P. "ESTIMATION OF CARDIOVASCULAR SYSTEM REACTANCE OF SPORTSMEN AT USE OF TESTS WITH CONTROLLED RESPIRATION." Journal of Health Sciences 4, no. 2013; 3 (2013): 335–48. https://doi.org/10.5281/zenodo.16197.

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The analysis of changes of indicators of variability of a heart rate, systolic and diastolic blood pressure, breath in a condition of rest is carried out and at carrying out of tests with controlled respiration of 6 and 15 times in a minute, having vegetothrophy influence. Calculated earlier centile distribution of distribution of indicators of variability of the listed functions at spontaneous and adjustable breath have allowed to establish differences in a range of 25-75 % of occurrence. In whole, we can state that controled respiratory 6 and 15 per time enable activation of various control

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10

Bohling, H. "GENERATION OF CONTROLLED ATMOSPHERES BY UTILIZING FRUIT RESPIRATION." Acta Horticulturae, no. 368 (July 1994): 132–41. http://dx.doi.org/10.17660/actahortic.1994.368.14.

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11

Hougs, Willy, and Chr Thorshauge. "Morphine Hyperglycaemia in Rabbits Prevented by Controlled Respiration." Acta Pharmacologica et Toxicologica 15, no. 3 (2009): 275–78. http://dx.doi.org/10.1111/j.1600-0773.1959.tb01178.x.

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12

Izawa, Shuhei, Asako Yoda, and Masahisa Kodama. "Effect of self-controlled respiration on provoked anger." Japanese Journal of Health Psychology 15, no. 2 (2002): 21–28. http://dx.doi.org/10.11560/jahp.15.2_21.

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13

Cropper Jr., Wendell P., and Henry L. Gholz. "Insitu needle and fine root respiration in mature slash pine (Pinuselliottii) trees." Canadian Journal of Forest Research 21, no. 11 (1991): 1589–95. http://dx.doi.org/10.1139/x91-221.

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Respiration of needles and surface fine roots was measured in a north central Florida slash pine (Pinuselliottii Engelm. var. elliottii) plantation. A controlled temperature chamber system was used to estimate respiration rates and Q10 values of insitu tissues over a range of 10 to 35 °C. Respiration rates did not differ significantly among seasons, fertilized versus unfertilized plots, or time of day in a diurnal time series (needles). Needle respiration from the lower canopy was less than that from the upper canopy. Fine root respiration measurements were consistent with previously made esti

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14

Corredor, Carlos, Cecilia De Plata, Jorge Badel, and Julio Cesar Montoya. "HUMAN TUMOR RESPIRATION." Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales 20, no. 76 (2024): 33–45. http://dx.doi.org/10.18257/raccefyn.20(76).1996.3017.

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71 malignant and 20 benign human tumors were tested as to their capability of oxygen utilization using endogenous substrates or either glucose or glutamine or a combination of these two energy substrates. It was found that tumor oxygen uptake did not differ significantly from that of peritumoral tissues excised in the same chirurgical procedure. No difference was found in glucose and glutamine uptake between tumoral and peritumoral tissues, but it was shown that glutamine decreases glucose uptake while glucose increases glutamine uptake in tumors. It was demonstrated that the radioactive label

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15

Foster, William J., Dewayne L. Ingram, and Terril A. Nell. "Photosynthesis and Root Respiration in Ilex crenata `Rotundifolia' at Supraoptimal Root-zone Temperatures." HortScience 26, no. 5 (1991): 535–37. http://dx.doi.org/10.21273/hortsci.26.5.535.

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Rooted stem cuttings of Ilex crenata Thunb. `Rotundifolia' were grown in a controlled-environment growth chamber. Root-zone temperatures were controlled with an electric system. Shoot carbon exchange and root respiration rates were determined in response to root-zone temperatures of 28, 32, 36, and 40C for 6 hour·day–1 for 7 days. Photosynthesis was decreased by root zones ≥ 32C, while root respiration increased with increasing root-zone temperature. Decreased photosynthetic rates were not due to increased stomatal resistance.

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16

Mizevа, I., A. Tankanag, and G. Krasnikov. "Relation of cardiovascular oscillations under controlled respiration in humans." Perm Scientific Center Journal 14, no. 3 (2021): 17–22. http://dx.doi.org/10.7242/2658-705x/2021.3.3.

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17

Brackmann, Auri, Fabio Rodrigo Thewes, Rogério de Oliveira Anese, Vanderlei Both, and Adriano Roque de Gasperin. "Respiration rate and its effect on mass loss and chemical qualities of 'Fuyu' persimmon fruit stored in controlled atmosphere." Ciência Rural 44, no. 4 (2014): 612–15. http://dx.doi.org/10.1590/s0103-84782014000400006.

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The objective of this research was evaluate the effect of two CO2 partial pressures in ultra-low oxygen on the mass loss in function of respiration, oxygen consumption, respiratory rate and other characteristics of 'Fuyu' persimmon during 12 weeks in controlled atmosphere (CA) storage at temperature of -0,5°C. For thus, one experiment was carried out with the followed CA condition: [1] 0.15 kPa O2 plus 2.0 kPa CO2 and [2] 0.15 kPa O2 plus 6.0 kPa CO2. On this study was verified that the respiration (carbon dioxide production) was responsible for 24% of total mass loss. The total mass loss is s

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18

Criddle, R. S., T. S. Anekonda, R. M. Sachs, R. W. Breidenbach, and L. D. Hansen. "Selection for biomass production based on respiration parameters in eucalypts: acclimation of growth and respiration to changing growth temperature." Canadian Journal of Forest Research 26, no. 9 (1996): 1569–76. http://dx.doi.org/10.1139/x26-176.

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This paper examines the relation between respiratory physiology and growth rate and the effects of environment on this relation for the purpose of developing means for accelerating and improving selection of trees for biomass production. The relations among biomass production, respiratory metabolism, and growth temperature in controlled environments were determined for three Eucalyptus genotypes (clones). Eucalyptuscamaldulensis 4016, E. camaldulensis C11, and Eucalyptusgundal (Eucalyptusgunnii × Eucalyptusdalrympleana hybrid) GD1 were selected for this study because of known qualitative diffe

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19

Makhlouf, Joseph, Claude Willemot, Joseph Arul, François Castaigne, and Jean-Pierre Emond. "Regulation of Ethylene Biosynthesis in Broccoli Flower Buds in Controlled Atmospheres." Journal of the American Society for Horticultural Science 114, no. 6 (1989): 955–58. http://dx.doi.org/10.21273/jashs.114.6.955.

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Abstract The effect of controlled atmospheres on the regulation of ethylene biosynthesis during the senescence of broccoli flower buds (Brassica oleracea, L. Italica group cv. Green Valiant) was assessed. The broccoli buds wee stored in the dark at 25C under a continuous stream of nitrogen containing the following percentages of CO2-O2 : 0-20 (air), 0-2.5, 6-20, and 10-20. Generally, respiration, ethylene production, and ethylene-forming enzyme (EFE) activity followed a climacteric like pattern in all atmospheres. The ACC content changed little during the “climacteric”, but increased dramatica

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20

Singhathip, Richard, Si-Hui Yang, Maysam Abbod, Rong-Guan Yeh, and Jiann-Shing Shieh. "EXTRACTING RESPIRATION RATE FROM RAW ECG SIGNALS." Biomedical Engineering: Applications, Basis and Communications 22, no. 04 (2010): 307–14. http://dx.doi.org/10.4015/s1016237210002079.

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There exists several techniques for monitoring respiration (spirometers, nasal thermocouples, transthoracic inductance, impedance plethysmography, strain gauge etc.), but each of these techniques requires a special device. The method proposed in this paper calculates the intervals of respiration rates extracted from ordinary electrocardiogram (ECG) signals. The result obtained shows clearly that each respiration cycle can be represented by a maxima. The simple algorithm proposed in this study is used to count the respiration times. The method has been tested on 26 voluntary subjects in three d

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21

Blankenship, Sylvia M. "The Effect of Ethylene during Controlled-atmosphere Storage of Bananas." HortScience 31, no. 4 (1996): 638a—638. http://dx.doi.org/10.21273/hortsci.31.4.638a.

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Banana fruit respiration rates and quality parameters such as peel color, pulp pH and soluble solids content were examined at 14°C under a number of controlled atmosphere (CA) environments. CA conditions were 1%, 2%, 4%, or 8% oxygen with or without 5% carbon dioxide. Each treatment combination was also done with or without 50 μL·L–1 ethylene added to the atmospheres. Green banana fruit were either gassed with ethylene (triggered) or ungassed. One percent oxygen was too low to consistently give undamaged bananas. The addition of 5% carbon dioxide to the controlled atmosphere increased fruit re

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22

Kostiuk, V. A., V. S. Kolodyaznaya, O. N. Rumiantceva, E. I. Kiprushkina, and I. A. Shestopalova. "Biological method based on track membranes to form controlled gaseous media for fruit cold storage." IOP Conference Series: Earth and Environmental Science 866, no. 1 (2021): 012013. http://dx.doi.org/10.1088/1755-1315/866/1/012013.

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Abstract The article proposes a biological method based on the use of gas-selective track membranes to form a modified gas atmosphere, considering the respiration rate of fruit. The work aims to study the change in the respiration rate of apples depending on the variety and storage time to substantiate the formation of the gas medium composition depending on the respiration rate of the fruit and the area of track membranes, and to study the kinetics of oxidation reactions of biologically active substances during cold storage of apples. The research is based on autumn apple varieties: Grushovka

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23

Novosádová, Irena, José Damian Ruiz-Sinoga, Jaroslav Záhora, and Helena Fišerová. "Soil microbial respiration beneath Stipa tenacissima L. and in surrounding bare soil." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, no. 1 (2011): 183–90. http://dx.doi.org/10.11118/actaun201159010183.

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Open steppes dominated by Stipa tenacissima L. constitute one of the most representative ecosystems of the semi-arid zones of Eastern Mediterranean Basin (Iberian Peninsula, North of Africa). Ecosystem functioning of these steppes is strongly related to the spatial pattern of grass tussocks. Soils beneath Stipa tenacissima L. grass show different fertility and different microclimatic conditions than in surrounding bare soil. The objective of this study was to assess the effect of Stipa tenacissima L. on the key soil microbial activities under controlled incubation conditions (basal and potenti

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24

Keshri, Nandita, Ingo Truppel, Werner B. Herppich, Martin Geyer, Cornelia Weltzien, and Pramod V. Mahajan. "In-Situ Measurement of Fresh Produce Respiration Using a Modular Sensor-Based System." Sensors 20, no. 12 (2020): 3589. http://dx.doi.org/10.3390/s20123589.

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In situ, continuous and real-time monitoring of respiration (R) and respiratory quotient (RQ) are crucial for identifying the optimal conditions for the long-term storage of fresh produce. This study reports the application of a gas sensor (RMS88) and a modular respirometer for in situ real-time monitoring of gas concentrations and respiration rates of strawberries during storage in a lab-scale controlled atmosphere chamber (190 L) and of Pinova apples in a commercial storage facility (170 t). The RMS88 consisted of wireless O2 (0% to 25%) and CO2 sensors (0% to 0.5% and 0% to 5%). The modular

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25

Blanchard, Mylène, Francois Castaigne, and Joseph Makhlouf. "CHANGES IN SUGAR CONTENT IN CUT ONION DURING STORAGE." HortScience 29, no. 4 (1994): 253e—253. http://dx.doi.org/10.21273/hortsci.29.4.253e.

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Our purpose was to study the impact of controlled atmosphere (CA) on respiration of and changes in sugar content of diced onions. The onions were peeled, diced, washed, disinfected, and centrifuged before storage for 12 days under gas mixtures of 21% O2 and 0% CO2 (air), 2% O2 and 0% CO2, and 2% O2 and 10% CO2. Every 4 days, respiration rate and sugar content (total, sucrose, fructose, and glucose) were determined. Carbon dioxide-enriched atmosphere limited respiration rate and sucrose depletion, whereas the mere reduction of O2 had no effect. Reducing sugar contents remained constant during s

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26

Blankenship, Sylvia M., and L. Eric Hinesley. "Tolerance of Controlled Atmosphere Storage of Cut Fraser Fir and Its Respiration Rate in Air." HortScience 25, no. 8 (1990): 941–43. http://dx.doi.org/10.21273/hortsci.25.8.941.

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Fraser fir [Abies fraseri (Pursh) Poir.] branches were held at 5C for 4 to 6 weeks in the following atmospheres: 1% or 3% in nitrogen; 0%, 1%, 5%, 10%, 20%, 40%, or 50% CO2 in air; or air only. Experiments were conducted in two. years during the fall, winter, and early spring. In general, CO2 ≥ 5% accelerated needle loss. There was considerable tree-to-tree variation in tolerance to elevated CO2. Oxygen at 1% killed branches, and 3% O2 showed no benefit compared to air. The initial dark respiration rate at 21C was about four times higher than at SC. Respiration decreased for ≈ 10 days and stab

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27

Xu, Fuqi, Shigang Qiao, Hua Li, Yanjun Deng, Chen Wang, and Jianzhong An. "The Effect of Mitochondrial Complex I-Linked Respiration by Isoflurane Is Independent of Mitochondrial Nitric Oxide Production." Cardiorenal Medicine 8, no. 2 (2018): 113–22. http://dx.doi.org/10.1159/000485936.

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Background: Anesthetic preconditioning (APC) of the myocardium is mediated in part by reversible alteration of mitochondrial function. Nitric oxide (NO) inhibits mitochondrial respiration and may mediate APC-induced cardioprotection. In this study, the effects of isoflurane on different states of mitochondrial respiration during the oxidation of complex I-linked substrates and the role of NO were investigated. Methods: Mitochondria were isolated from Sprague-Dawley rat hearts. Respiration rates were measured polarographically at 28ºC with a computer-controlled Clark-type O2 electrode in the mi

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28

Ali, Usman, Rohit Maurya, Santanu Basu, and Koushik Mazumder. "Indian apple quality characteristics as affected by controlled atmosphere storage." Journal of Applied Horticulture 24, no. 03 (2023): 269–75. http://dx.doi.org/10.37855/jah.2022.v24i03.48.

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The effects of controlled atmosphere (CA) storage on postharvest qualities of apple (Royal Delicious) were investigated. Compared to the postharvest quality of fresh apple (0 day) a significant change in the fruit qualities such as respiration rate, firmness, ripening, color, low molecular weight sugar, enzyme activity and concentrations of volatile compounds were observed during CA storage. After 90 days CA storage, apples showed a significant increase in respiration rate (58.7%), ripening index (13.9%) and reduction in firmness (35.8%) compared to fresh apples. During 90 days CA storage, the

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29

Hasbullah, Rokhani. "Respiration rate measurement of horticultural product under controlled atmospheric condition." Jurnal Keteknikan Pertanian 21, no. 04 (2007): 419–27. http://dx.doi.org/10.19028/jtep.21.4.419-427.

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30

Hasbullah, Rokhani. "Respiration Rate Measurement of Horticultural Product under Controlled Atmosphere Conditions." Jurnal Keteknikan Pertanian 22, no. 1 (2008): 63–68. http://dx.doi.org/10.19028/jtep.22.1.63-68.

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31

Shushkov, S. V. "THE REGENERATIVE POTENTIAL OF THE ORGANISM WITH CONTROLLED MODERATE RESPIRATION." Научное обозрение. Биологические науки (Scientific Review. Biological Sciences), no. 1 2022 (2022): 62–67. http://dx.doi.org/10.17513/srbs.1262.

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32

Solanky, A. S. "Respiration biofeedback assisted controlled breathing training to enhance shooting performance." British Journal of Sports Medicine 44, Suppl_1 (2010): i27—i28. http://dx.doi.org/10.1136/bjsm.2010.078725.91.

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33

Hubbard, R. M., M. G. Ryan, and D. L. Lukens. "A simple, battery-operated, temperature-controlled cuvette for respiration measurements." Tree Physiology 15, no. 3 (1995): 175–79. http://dx.doi.org/10.1093/treephys/15.3.175.

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34

Holmqvist, Fredrik, Martin Stridh, Johan Waktare, et al. "Rapid fluctuations in atrial fibrillatory electrophysiology detected during controlled respiration." Heart Rhythm 2, no. 5 (2005): S140—S141. http://dx.doi.org/10.1016/j.hrthm.2005.02.438.

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35

Palma, Teresa, David W. Stanley, José M. Aguilera, and Juan P. Zoffoli. "Respiratory Behavior of Cherimoya (Annona cherimola Mill.) under Controlled Atmospheres." HortScience 28, no. 6 (1993): 647–49. http://dx.doi.org/10.21273/hortsci.28.6.647.

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The objective of this work was to obtain information for designing modified-atmosphere packages for storing and transporting cherimoyas. Respiration rates of `Conchs Lisa' cherimoyas at 10C were monitored in a flow-through system using O2 consumption and CO2 production under atmospheres containing 5910, 10%, 15%, or 20% O2. Under normal atmosphere (20% O2), the respiration curve exhibited atypical climacteric rise 15 days after harvest, while 15% and 10 % O2 delayed this event. Fruit kept in 5% O2 did not show a detectable climacteric rise and did not produce ethylene. All fruit ripened normal

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Hodges, Paul W., and Simon C. Gandevia. "Changes in intra-abdominal pressure during postural and respiratory activation of the human diaphragm." Journal of Applied Physiology 89, no. 3 (2000): 967–76. http://dx.doi.org/10.1152/jappl.2000.89.3.967.

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In humans, when the stability of the trunk is challenged in a controlled manner by repetitive movement of a limb, activity of the diaphragm becomes tonic but is also modulated at the frequency of limb movement. In addition, the tonic activity is modulated by respiration. This study investigated the mechanical output of these components of diaphragm activity. Recordings were made of costal diaphragm, abdominal, and erector spinae muscle electromyographic activity; intra-abdominal, intrathoracic, and transdiaphragmatic pressures; and motion of the rib cage, abdomen, and arm. During limb movement

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37

Mauderly, Joe L. "Measurement of Respiration and Respiratory Responses During Inhalation Exposures." Journal of the American College of Toxicology 9, no. 4 (1990): 397–405. http://dx.doi.org/10.3109/10915819009078750.

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This report reviews approaches for making measurements of the respiration of subjects during inhalation exposures. Respiration is measured to quantitate the volume of exposure material inhaled, to evaluate the normalcy and steadiness of respiration during exposure, to relate breathing pattern to deposition or uptake of inhaled materials, to detect physiological responses to inhaled materials, and to monitor respiration during controlled breathing. A small number of basic devices are commonly used during exposures, including nonrebreathing valves, pneumotachographs, spirometers, and plethysmogr

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38

GAO, Yonggang, Ming WANG, Lanqi JIANG, Fang ZHAO, Feng GAO, and Huiying ZHAO. "Dynamics of carbon budget and meteorological factors of a typical maize ecosystem in Songnen Plain, China." Spanish Journal of Agricultural Research 21, no. 4 (2023): e0301. http://dx.doi.org/10.5424/sjar/2023214-20226.

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Aim of study: Understanding the carbon budget and meteorological factor impacts of farmland ecosystems is helpful for scientific assessment of carbon budget and low-carbon agricultural production practices. Area of study: The Songnen Plain, NE China, in 2019. Material and methods: Based on eddy-related flux and soil heterotrophic respiration observations from a typical maize farmland ecosystem, using mathematical statistics and carbon balance equation methods, were analyzed. Main results: Soil respiration rate (Rs) and composition were influenced and controlled by the synergi

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Wang, Xu, Kaikai Fan, Yuchun Yan, et al. "Controls of Seasonal and Interannual Variations on Soil Respiration in a Meadow Steppe in Eastern Inner Mongolia." Agronomy 13, no. 1 (2022): 20. http://dx.doi.org/10.3390/agronomy13010020.

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Understanding long-term seasonal and interannual patterns of soil respiration with their controls is essential for accurately quantifying carbon fluxes at a regional scale. During the period from 2009 to 2014, an automatic measurement system (LI-8150, Licor Ldt., Lincoln, Nebraska, USA) was employed for the measurement of soil respiration in a meadow steppe of eastern Inner Mongolia. We found that the seasonal pattern of soil respiration was controlled mainly by the soil temperature, which explained about 82.19% of the variance. Annual soil respiration varied between 391.4 g cm−2 and 597.7 g c

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40

Toland, David E., and Donald R. Zak. "Seasonal patterns of soil respiration in intact and clear-cut northern hardwood forests." Canadian Journal of Forest Research 24, no. 8 (1994): 1711–16. http://dx.doi.org/10.1139/x94-221.

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The flux of CO2 from forest soils is controlled by the respiration of plant roots and soil microorganisms, the rates of which are likely to change following forest harvesting. Root respiration should decrease, whereas microbial respiration should increase, in response to warmer soil temperatures and greater soil C availability following removal of the overstory. We investigated the influence of forest harvesting on seasonal patterns of soil respiration in two different northern hardwood ecosystems. One ecosystem was dominated in the overstory by Acersaccharum Marsh, and Quercusrubra L., and th

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41

Eldridge, F. L., D. E. Millhorn, and J. P. Kiley. "Antagonism by theophylline of respiratory inhibition induced by adenosine." Journal of Applied Physiology 59, no. 5 (1985): 1428–33. http://dx.doi.org/10.1152/jappl.1985.59.5.1428.

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The effects on respiration of an analogue of adenosine, L-2-N6-(phenylisopropyl)adenosine (PIA), and of the methylxanthine, theophylline, were determined in 19 vagotomized glomectomized cats whose end-tidal PCO2 was kept constant by means of a servo-controlled ventilator. Integrated phrenic nerve activity was used to represent respiratory output. Our results show that PIA, whether given systemically or into the third cerebral ventricle, depressed respiration. Systemically administered theophylline stimulated respiration. Theophylline given intravenously, or into the third ventricle not only re

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Galina, Alexandrovna Pavlova* Alexander Vladimirovich Gerasimov. "THE INFLUENCE OF PHYSICAL ACTIVITY ON THE PARAMETERS OF EXTERNAL RESPIRATION OF SEVENYEAR-OLD GIRLS, LIVING IN DIFFERENT ENVIRONMENTAL CONDITIONS." Indo American Journal of Pharmaceutical Sciences 04, no. 09 (2017): 3080–84. https://doi.org/10.5281/zenodo.910785.

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Different social and environmental factors over the past few years have had a negative impact on the health of the population and its adaptive capacity. Among the studied issues, constituting a social procurement, a special place is occupied by the problem of preserving the health of children, living in conditions of technogenic pollution of the environment. Growing organism under modern conditions is forced to stand against various factors, causing functional mismatch, among which there are certain ecological living conditions. Therefore, the relevance of investigation the physiological syste

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Kéraval, Benoit, Anne Catherine Lehours, Jonathan Colombet, Christian Amblard, Gaël Alvarez, and Sébastien Fontaine. "Soil carbon dioxide emissions controlled by an extracellular oxidative metabolism identifiable by its isotope signature." Biogeosciences 13, no. 22 (2016): 6353–62. http://dx.doi.org/10.5194/bg-13-6353-2016.

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Abstract. Soil heterotrophic respiration is a major determinant of the carbon (C) cycle and its interactions with climate. Given the complexity of the respiratory machinery, it is traditionally considered that oxidation of organic C into carbon dioxide (CO2) strictly results from intracellular metabolic processes. Here we show that C mineralization can operate in soils deprived of all observable cellular forms. Moreover, the process responsible for CO2 emissions in sterilized soils induced a strong C isotope fractionation (up to 50 ‰) incompatible with respiration of cellular origin. The suppl

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Abdulqader, Tareq, Reza Saatchi, and Heather Elphick. "Respiration Measurement in a Simulated Setting Incorporating the Internet of Things." Technologies 9, no. 2 (2021): 30. http://dx.doi.org/10.3390/technologies9020030.

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The Internet of Things (IoT) in healthcare has gained significant attention in recent years. This study demonstrates an adaptation of IoT in healthcare by illustrating a method of respiration rate measurement from a platform that simulates breathing. Respiration rate is a crucial physiological measure in monitoring critically ill patients. The devised approach, with further development, may be suitable for integration into neonatal intensive care units (NICUs) to measure infants’ respiration rate. A potential advantage of this method is that it monitors respiration using a wireless non-contact

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Ow, Lai Fern, David Whitehead, Adrian S. Walcroft, and Matthew H. Turnbull. "Thermal acclimation of respiration but not photosynthesis in Pinus radiata." Functional Plant Biology 35, no. 6 (2008): 448. http://dx.doi.org/10.1071/fp08104.

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Pinus radiata L. were grown in climate-controlled cabinets under three night/day temperature treatments, and transferred between treatments to mimic changes in growth temperature. The objective was to determine the extent to which dark respiration and photosynthesis in pre-existing and new needles acclimate to changes in growth temperatures. We also assessed whether needle nitrogen influenced the potential for photosynthetic and respiratory acclimation, and further assessed if short-term (instantaneous, measured over a few hours) respiratory responses are accurate predictors of long-term (accl

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Muvianto, Cahyo Mustiko Okta, Kurniawan Yuniarto, Anang Lastriyanto, and Lalu Arioki Setiadi. "Low Budget Respirometer Chamber Design Based on Wireless Sensor Network." agriTECH 42, no. 2 (2022): 187. http://dx.doi.org/10.22146/agritech.65739.

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Fresh fruit respiration information is essential optimizing food storage systems. Meanwhile, respiration is defined as the process of oxygen production and carbon dioxide release during storage in a closed respiratory chamber. Therefore, this study aims to design a low-budget computerized respiratory chamber for enhancing fruit packaging and storage system. Real-time fruit respiration can be measured by applying wireless gas sensors network. The respirometer consisted of 3,600 mL glass jar with a screw stainless lid, while the electrochemical and non-dispersive infrared sensors were mounted on

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González-Ubierna, Sergio, María Teresa de la Cruz, and Miguel Ángel Casermeiro. "Climate factors mediate soil respiration dynamics in Mediterranean agricultural environments: an empirical approach." Soil Research 52, no. 6 (2014): 543. http://dx.doi.org/10.1071/sr14008.

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Soil CO2 emissions, the result of soil respiration processes, may be essential in climate change modelling. The complex phenomenon of soil respiration is regulated by a range of mainly climate-related environmental factors. We tested the latest published empirical models in a field experiment in an agricultural soil under Mediterranean conditions. Soil respiration was monitored biweekly with a portable infrared gas analyser, and climate features were monitored for 1 year (2010–11). An additional rewetting assay (watering the soil) was done at the end of the experiment in summer when the soil w

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Nagayoshi, H., T. Janota, K. Hnatkova, A. J. Camm, and M. Malik. "Autonomic modulation of ventricular rate in atrial fibrillation." American Journal of Physiology-Heart and Circulatory Physiology 272, no. 4 (1997): H1643—H1649. http://dx.doi.org/10.1152/ajpheart.1997.272.4.h1643.

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This study investigated the changes in R-R interval in 23 patients (11 men and 12 women; mean age 61 yr) with persistent atrial fibrillation in response to several provocative maneuvers including active postural change, Valsalva maneuver, handgrip, and rhythm-controlled respiration. Averaged R-R intervals were shortened immediately after postural change (from 797 +/- 35 ms supine to 677 +/- 27 ms standing; P < 0.01) and recovered to the 90% level within 100 s. During Valsalva strain and handgrip, mean R-R intervals were significantly shortened (from 737 +/- 37 ms sitting to 697 +/- 38 ms in

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Kircher, Michael, Gustavo Lenis, and Olaf Dössel. "Separating the effect of respiration from the heart rate variability for cases of constant harmonic breathing." Current Directions in Biomedical Engineering 1, no. 1 (2015): 46–49. http://dx.doi.org/10.1515/cdbme-2015-0012.

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AbstractHeart Rate Variability studies are a known measure for the autonomous control of the heart rate. In special situations, its interpretation can be ambiguous, since the respiration has a major influence on the heart rate variability. For this reason it has often been proposed to measure Heart Rate Variability, while the subjects are breathing at a constant respiration rate. That way the spectral influence of the respiration is known. In this work we propose to remove this constant respiratory influence from the heart rate and the Heart Rate Variability parameters to gain respiration free

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Yazdanpanah, N. "CO<sub>2</sub> emission and structural characteristics of two calcareous soils amended with municipal solid waste and plant residue." Solid Earth Discussions 7, no. 4 (2015): 3151–77. http://dx.doi.org/10.5194/sed-7-3151-2015.

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Abstract. This investigation examines the effect of different amendments on selected soil physical and biological properties over a twenty four month period in two cropland fields. Urban municipal solid waste (MSW) compost and alfalfa residue (AR) were used as different organic amendments at the rates of 0 (control), 10 and 30 Mg ha−1 to a clay loam soil and a loamy sand soil in a semiarid region. Result showed that the soil improvement was controlled by the application rate and decomposability of amendments and soil type. The addition of organic amendments to the soils improved aggregate stab

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