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Journal articles on the topic 'Negative volume'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Jimbo, Kouichi. "Extraction of volume produced negative ions." Kakuyūgō kenkyū 55, no. 4 (1986): 311–27. http://dx.doi.org/10.1585/jspf1958.55.311.

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2

Bacal, M., A. Hatayama, and J. Peters. "Volume production negative hydrogen ion sources." IEEE Transactions on Plasma Science 33, no. 6 (2005): 1845–71. http://dx.doi.org/10.1109/tps.2005.860069.

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3

Bacal, M. "Volume production of hydrogen negative ions." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 37-38 (February 1989): 28–32. http://dx.doi.org/10.1016/0168-583x(89)90131-6.

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4

Taneja, Indu, Christopher Moran, Marvin S. Medow, June L. Glover, Leslie D. Montgomery, and Julian M. Stewart. "Differential effects of lower body negative pressure and upright tilt on splanchnic blood volume." American Journal of Physiology-Heart and Circulatory Physiology 292, no. 3 (2007): H1420—H1426. http://dx.doi.org/10.1152/ajpheart.01096.2006.

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Upright posture and lower body negative pressure (LBNP) both induce reductions in central blood volume. However, regional circulatory responses to postural changes and LBNP may differ. Therefore, we studied regional blood flow and blood volume changes in 10 healthy subjects undergoing graded lower-body negative pressure (−10 to −50 mmHg) and 8 subjects undergoing incremental head-up tilt (HUT; 20°, 40°, and 70°) on separate days. We continuously measured blood pressure (BP), heart rate, and regional blood volumes and blood flows in the thoracic, splanchnic, pelvic, and leg segments by impedanc

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5

Peters, J., C. Fraser, R. S. Stuart, W. Baumgartner, and J. L. Robotham. "Negative intrathoracic pressure decreases independently left ventricular filling and emptying." American Journal of Physiology-Heart and Circulatory Physiology 257, no. 1 (1989): H120—H131. http://dx.doi.org/10.1152/ajpheart.1989.257.1.h120.

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The mechanism for the fall in left ventricular (LV) stroke volume with normal and obstructed inspiration is controversial with changes proposed in LV preload and afterload. During respiration extending over several cardiac cycles, changes in both LV filling and emptying could occur, rendering demonstration of any responsible mechanism difficult. To evaluate the independent effects of negative intrathoracic pressure (NITP) on LV filling and emptying, we have analyzed the effects of NITP confined to either diastole or systole using electrocardiogram (ECG)-triggered phrenic nerve stimulation in s

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6

Morishita, T., K. Miyamoto, Y. Fujiwara, et al. "Spatial uniformity of negative ion production in volume negative ion source." Review of Scientific Instruments 73, no. 2 (2002): 1064–66. http://dx.doi.org/10.1063/1.1430527.

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7

Cairns, Andrew B., and Andrew L. Goodwin. "Negative linear compressibility." Physical Chemistry Chemical Physics 17, no. 32 (2015): 20449–65. http://dx.doi.org/10.1039/c5cp00442j.

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8

Hollander, Ellen H., Jiun-Jr Wang, Gary M. Dobson, Kim H. Parker, and John V. Tyberg. "Negative wave reflections in pulmonary arteries." American Journal of Physiology-Heart and Circulatory Physiology 281, no. 2 (2001): H895—H902. http://dx.doi.org/10.1152/ajpheart.2001.281.2.h895.

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The pulmonary arterial branching pattern suggests that the early systolic forward-going compression wave (FCW) might be reflected as a backward-going expansion wave (BEW). Accordingly, in 11 open-chest anesthetized dogs we measured proximal pulmonary arterial pressure and flow (velocity) and evaluated wave reflection using wave-intensity analysis under low-volume, high-volume, high-volume + 20 cmH2O positive end-expiratory pressure (PEEP), and hypoxic conditions. We defined the reflection coefficient R as the ratio of the energy of the reflected wave (BEW [−]; backward-going compression wave,

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9

Gerritsen, L., M. Rijpkema, I. van Oostrom, et al. "Amygdala to hippocampal volume ratio is associated with negative memory bias in healthy subjects." Psychological Medicine 42, no. 2 (2011): 335–43. http://dx.doi.org/10.1017/s003329171100122x.

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BackgroundNegative memory bias is thought to be one of the main cognitive risk and maintenance factors for depression, but its neural substrates are largely unknown. Here, we studied whether memory bias is related to amygdala and hippocampal volume, two structures that are critical for emotional memory processes and that show consistent volume alterations in depression.MethodStructural magnetic resonance imaging (MRI) was carried out in 272 healthy participants (62% female, 18–50 years old). All images were acquired on 1.5 T Siemens MRI scanners. Automatic segmentation of amygdala and hippocam

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10

Hagouel, Paul Isaac L. "Negative resist corner rounding. Envelope volume modeling." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 14, no. 6 (1996): 4257. http://dx.doi.org/10.1116/1.588586.

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11

Bacal, M., J. Bruneteau, and P. Devynck. "Method for extracting volume produced negative ions." Review of Scientific Instruments 59, no. 10 (1988): 2152–57. http://dx.doi.org/10.1063/1.1139978.

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12

Fukumasa, Osamu, and Ryo Nishida. "Modelling of negative ion transport in caesium-seeded volume negative ion sources." Nuclear Fusion 46, no. 6 (2006): S275—S280. http://dx.doi.org/10.1088/0029-5515/46/6/s07.

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13

THOMA, ROBERT J., MOLLIE MONNIG, FAITH M. HANLON, et al. "Hippocampus volume and episodic memory in schizophrenia." Journal of the International Neuropsychological Society 15, no. 2 (2009): 182–95. http://dx.doi.org/10.1017/s1355617709090225.

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AbstractPrevious studies of schizophrenia have suggested a linkage between neuropsychological (NP) deficits and hippocampus abnormality. The relationship between hippocampus volume and NP functioning was investigated in 24 patients with chronic schizophrenia and 24 matched healthy controls. Overall intracranial, white and gray matter, and anterior (AH) and posterior (PH) hippocampus volumes were assessed from magnetic resonance images (MRI). NP domains of IQ, attention, and executive function were also evaluated with respect to volumetric measures. It was hypothesized that AH and PH volumes an

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14

Kudoh, Ichidai, Tomio Andoh, Hisae Doi, Kazuhiro Kaneko, Yoshito Okutsu, and Fukuichiro Okumura. "Continuous Negative Extrathoracic Pressure Ventilation, Lung Water Volume, and Central Blood Volume." Chest 101, no. 2 (1992): 530–33. http://dx.doi.org/10.1378/chest.101.2.530.

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15

Yang, Xiaoguang, and Shaobin Guo. "Pore characterization of marine-continental transitional shale in Permian Shanxi Formation of The Southern North China Basin." Energy Exploration & Exploitation 38, no. 6 (2020): 2199–216. http://dx.doi.org/10.1177/0144598720912346.

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Organic-rich marine-continental transitional shale is widely developed in the Permian Shanxi Formation in the Southern North China Basin. In this study, shale samples from the southern and northern wells of the basin were characterized by X-ray diffraction, high-pressure mercury intrusion porosimetry, low-pressure gas adsorption (N2 and CO2) and argon ion polishing-field emissions scanning electron microscopy. The pore types and structures of shale micropores, mesopores and macropores are qualitatively described; their pore size distribution and volume are quantitatively characterized; and the

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16

Heiser, Brian, E. B. Okrasinski, Rebecca Murray, and Kelly McCord. "In Vitro Evaluation of Evacuated Blood Collection Tubes as a Closed-Suction Surgical Drain Reservoir." Journal of the American Animal Hospital Association 54, no. 1 (2018): 30–35. http://dx.doi.org/10.5326/jaaha-ms-6519.

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ABSTRACT The initial negative pressures of evacuated blood collection tubes (EBCT) and their in vitro performance as a rigid closed-suction surgical drain (CSSD) reservoir has not been evaluated in the scientific literature despite being described in both human and veterinary texts and journals. The initial negative pressures of EBCT sized 3, 6, 10, and 15 mL were measured and the stability of the system monitored. The pressure-to-volume curve as either air or water was added and maximal filling volumes were measured. Evacuated blood collection tubes beyond the manufacture’s expiration date we

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17

Altez, Maria S. Rueda, Lamia Soghier, Joseph M. Campos, James Bost, Jiaxiang Gai, and Rana F. Hamdy. "1341. Blood Volume Collected for Blood Cultures in Infants with Suspected Neonatal Sepsis in the NICU." Open Forum Infectious Diseases 7, Supplement_1 (2020): S682. http://dx.doi.org/10.1093/ofid/ofaa439.1523.

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Abstract Background Blood cultures have high sensitivity to detect bacteremia in septic neonates when &gt;=1 ml of blood is collected. Neonatologists often cite low confidence in microbiologic sampling as rationale for continuing antibiotics without a focus of infection despite negative blood cultures, resulting in prolonged antimicrobial therapy. We aim to describe the blood culture sample volumes in NICU patients, to identify factors associated with sample volumes &lt; 1ml, and to compare the sample volumes of patients treated for culture-negative sepsis with those with bloodstream i

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18

Fortney, S., C. Tankersley, J. T. Lightfoot, et al. "Cardiovascular responses to lower body negative pressure in trained and untrained older men." Journal of Applied Physiology 73, no. 6 (1992): 2693–700. http://dx.doi.org/10.1152/jappl.1992.73.6.2693.

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To determine whether aerobic conditioning alters the orthostatic responses of older subjects, cardiovascular performance was monitored during graded lower body negative pressure in nine highly trained male senior athletes (A) aged 59–73 yr [maximum O2 uptake (VO2 max) = 52.4 +/- 1.7 ml.kg-1 x min-1] and nine age-matched control subjects (C) (VO2 max = 31.0 +/- 2.9 ml.kg-1 x min-1). Cardiac volumes were determined from gated blood pool scintigrams by use of 99mTc-labeled erythrocytes. During lower body negative pressure (0 to -50 mmHg), left ventricular end-diastolic and end-systolic volume ind

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19

Gerritsen, L., G. Kalpouzos, E. Westman, et al. "The influence of negative life events on hippocampal and amygdala volumes in old age: a life-course perspective." Psychological Medicine 45, no. 6 (2014): 1219–28. http://dx.doi.org/10.1017/s0033291714002293.

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Background.Psychosocial stress has been related to changes in the nervous system, with both adaptive and maladaptive consequences. The aim of this study was to examine the relationship of negative events experienced throughout the entire lifespan and hippocampal and amygdala volumes in older adults.Method.In 466 non-demented old adults (age range 60–96 years, 58% female), hippocampal and amygdala volumes were segmented using Freesurfer. Negative life events and the age at which these events occurred were assessed by means of a structured questionnaire. Using generalized linear models, hippocam

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20

Pagano, Damiano, Claudine Gorse, and Mario Capitelli. "Atomic wall recombination and volume negative ion production." Review of Scientific Instruments 77, no. 3 (2006): 03A505. http://dx.doi.org/10.1063/1.2162858.

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21

Ivanov, A. A. "Two negative ion groups in volume H− sources." Review of Scientific Instruments 75, no. 5 (2004): 1754–56. http://dx.doi.org/10.1063/1.1695620.

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22

Duncan, Roderick. "Negative motor phenomena (Advances in neurology, volume 67)." Neuromuscular Disorders 6, no. 3 (1996): 221. http://dx.doi.org/10.1016/0960-8966(96)81912-2.

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23

Berlemont, P., D. A. Skinner, and M. Bacal. "Modeling surface effects in negative-ion volume sources." Chemical Physics Letters 183, no. 5 (1991): 397–402. http://dx.doi.org/10.1016/0009-2614(91)90401-t.

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24

Kargul, Michał, Patryk Skórka, Piotr Gutowski, Arkadiusz Kazimierczak, Ireneusz Wiernicki, and Paweł Rynio. "Beyond Diameter: Enhancing Abdominal Aortic Aneurysm Surveillance with Volumetric Assessments after Endovascular Aneurysm Repair (EVAR)." Journal of Clinical Medicine 12, no. 21 (2023): 6733. http://dx.doi.org/10.3390/jcm12216733.

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This study aimed to investigate the relationship between maximum transverse diameter (MTD) and volume measurements in patients who underwent reoperations after endovascular aneurysm repair (EVAR), and their association with the occurrence of endoleaks. The study included 51 patients who underwent EVAR and subsequent re-operations caused by endoleaks type I–III. In some number of events, multiple re-operations were needed. MTD was measured using the Horos software, and segmentations of the AAA were performed using 3D Slicer. This study first evaluated post-operative computed tomography angiogra

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25

Greenway, C. V. "Effects of hemorrhage and hepatic nerve stimulation on venous compliance and unstressed volume in cat liver." Canadian Journal of Physiology and Pharmacology 65, no. 11 (1987): 2168–74. http://dx.doi.org/10.1139/y87-342.

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Intrahepatic blood volume–pressure relationships were studied using plethysmography to measure hepatic blood volume and a hepatic venous long-circuit to control intrahepatic pressure. In cats anesthetized with pentobarbital or with ketamine–chloralose, hemorrhage (to reduce hepatic blood flow to 60% of control) caused marked reductions in hepatic blood volume and intrahepatic pressure but did not significantly change hepatic blood volume–pressure relationships. We were unable to demonstrate an active reflex venous response to hemorrhage in these preparations, although a large passive response

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26

Schindler, Philipp, Arne Riegel, Dennis Görlich, et al. "Lower Ratio of Liver Volume and Body Weight Is a Negative Predictor of Survival after Transjugular Intrahepatic Portosystemic Shunt." Journal of Personalized Medicine 11, no. 9 (2021): 903. http://dx.doi.org/10.3390/jpm11090903.

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Transjugular intrahepatic portosystemic shunt (TIPS) is the most effective measure to treat complications of portal hypertension. However, liver function may deteriorate after TIPS. Predictors of liver function and outcome after TIPS are therefore important for management of TIPS patients. The study aimed to evaluate the impact of liver volume on transplant-free survival (TFS) after TIPS, as well as the evolution of liver volume and its relationship with liver function after TIPS. A retrospective analysis of all consecutive patients who underwent TIPS in a tertiary care university liver center

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27

Holguín, Andrés R., Daniel R. Delgado, Mehri Khoubnasabjafari, and Abolghasem Jouyban. "STUDY OF SOME VOLUMETRIC PROPERTIES OF GLYCEROL FORMAL + ETHANOL MIXTURES AND CORRELATION WITH THE JOUYBAN-ACREE MODEL." Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales 35, no. 136 (2023): 315–28. http://dx.doi.org/10.18257/raccefyn.35(136).2011.2514.

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Molar volumes, excess molar volumes, and partial molar volumes were investigated for glycerol formal + ethanol mixtures by density measurements at several temperatures. Excess molar volumes are fitted by the Redlich-Kister equation and compared with other systems. The system exhibits negative excess volumes, probably due to increased H-bond interactions. Volume thermal expansion coefficients are also calculated. The Jouyban-Acree model was used for density and molar volume correlations at different temperatures. The mean relative deviations between experimental and calculated data were 0.03 ±

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28

HOTTA, Masashi, Ryota OGAWA, and Mitsuo HANO. "TE Volume Modes in Anisotropic Single-Negative Slab with Negative Component in Permeability Tensor." IEICE Transactions on Electronics E93-C, no. 1 (2010): 81–84. http://dx.doi.org/10.1587/transele.e93.c.81.

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29

Smit, E. V. D. M., and M. W. Louw. "The relationship between volatility, volume and open interest: Some evidence from the South African futures market." South African Journal of Business Management 27, no. 4 (1996): 113–21. http://dx.doi.org/10.4102/sajbm.v28i4.816.

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Using the methodology devised by Bessembinder Seguin, the relationships between volatility on the one hand and volume and market depth in the South African futures market are examined. Daily mark-to-market prices, trading volumes and open interest on six futures contracts traded on SAFEX over the period 1990 to 1994 are utilized. The evidence suggests that linking price volatility to total volume does not capture all information. When total volume is divided into expected and unexpected components, the latter is shown to have a more substantial effect on volatility. Furthermore, coefficients p

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30

Smit, E. V. D. M., and M. W. Louw. "The relationship between volatility, volume and open interest: Some evidence from the South African futures market." South African Journal of Business Management 27, no. 4 (1996): 113–21. http://dx.doi.org/10.4102/sajbm.v27i4.816.

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Using the methodology devised by Bessembinder Seguin, the relationships between volatility on the one hand and volume and market depth in the South African futures market are examined. Daily mark-to-market prices, trading volumes and open interest on six futures contracts traded on SAFEX over the period 1990 to 1994 are utilized. The evidence suggests that linking price volatility to total volume does not capture all information. When total volume is divided into expected and unexpected components, the latter is shown to have a more substantial effect on volatility. Furthermore, coefficients p

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31

Barbieri, Riccardo, John K. Triedman, and J. Philip Saul. "Heart rate control and mechanical cardiopulmonary coupling to assess central volume: a systems analysis." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 283, no. 5 (2002): R1210—R1220. http://dx.doi.org/10.1152/ajpregu.00127.2002.

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Small negative changes of central volume reduce cardiac output without significant alterations of arterial blood pressure (ABP), suggesting an adequate regulatory response. Furthermore, evidence has arisen supporting a Bainbridge reflex (tachycardia with hypervolemia) in humans. To investigate these phenomena, multivariate autoregressive techniques were used to evaluate the beat-to-beat interactions between respiration, R-R interval, and ABP at six levels of decreased and increased central volume. With reductions of central volume below control, baroreflex and respiratory sinus arrhythmia gain

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32

Okifo, Oghenefejiro, Vivian Wu, Samantha Tam, Sondos Al Khatib, and Farzan Siddiqui. "Abstract PO-044: Correlation between circulating tumor DNA and tumor volume in head and neck cancer." Clinical Cancer Research 29, no. 18_Supplement (2023): PO—044—PO—044. http://dx.doi.org/10.1158/1557-3265.aacrahns23-po-044.

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Abstract Purpose: NavDx is a DNA test that has been used widely in head and neck cancer to quantify fragments of circulating tumor tissue modified viral DNA (TTMV HPV DNA), an HPV-specific cancer biomarker that is shed into the blood. Circulating tumor DNA has shown promise in monitoring tumor progression and therapeutic efficacy and therefore has potential to assist in improved cancer diagnosis and treatment. Recent studies have demonstrated a correlation between circulating tumor DNA and tumor volume in metastatic pancreatic ductal adenocarcinoma and metastatic breast cancer. The purpose of

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33

McKenna, P. J., C. E. Lund, and Ann M. Mortimer. "Negative Symptoms: Relationship to Other Schizophrenic Symptom Classes." British Journal of Psychiatry 155, S7 (1989): 104–7. http://dx.doi.org/10.1192/s0007125000291617.

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If negative symptoms represent a distinct class of schizophrenic symptoms, they should, to paraphrase Bleuler (1911), be more closely related to each other than they are to other schizophrenic symptoms. The first part of this statement, that negative symptoms are intrinsically related to each other, has received considerable experimental support (Andreasen, this volume; Mortimer et al, this volume). The second, that negative symptoms are unrelated to other schizophrenic symptoms, has been somewhat more unevenly investigated.

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34

Courteille, C., A. M. Bruneteau, and M. Bacal. "Investigation of a large volume negative hydrogen ion source." Review of Scientific Instruments 66, no. 3 (1995): 2533–40. http://dx.doi.org/10.1063/1.1145654.

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35

Furutani, Shinji, Sou Kamimura, Kana Fujii, Keita Katou, and Yuuichirou Enomoto. "High Volume Manufacturing Capability of Negative Tone Development Pprocess." Journal of Photopolymer Science and Technology 24, no. 2 (2011): 227–32. http://dx.doi.org/10.2494/photopolymer.24.227.

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36

Droste, Miriam S., Stefan S. Biel, Lara Terstegen, Klaus-Peter Wittern, Horst Wenck, and Roger Wepf. "Noninvasive measurement of cell volume changes by negative staining." Journal of Biomedical Optics 10, no. 6 (2005): 064017. http://dx.doi.org/10.1117/1.2138011.

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37

Jarvis, Sara S., and James A. Pawelczyk. "Lower Body Negative Pressure Shifts The Volume Indifferent Point." Medicine & Science in Sports & Exercise 41 (May 2009): 9. http://dx.doi.org/10.1249/01.mss.0000354590.70515.cc.

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38

Fei, Hongzhan, Michael Wiedenbeck, Naoya Sakamoto, et al. "Negative activation volume of oxygen self-diffusion in forsterite." Physics of the Earth and Planetary Interiors 275 (February 2018): 1–8. http://dx.doi.org/10.1016/j.pepi.2017.12.005.

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39

Papathanassiou, A. N., I. Sakellis, and J. Grammatikakis. "Negative activation volume for dielectric relaxation in hydrated rocks." Tectonophysics 490, no. 3-4 (2010): 307–9. http://dx.doi.org/10.1016/j.tecto.2010.04.030.

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40

Litvinov, P., and V. Baturin. "A volume negative-ion source for ion-beam machines." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 171, no. 4 (2000): 573–76. http://dx.doi.org/10.1016/s0168-583x(00)00323-2.

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41

Biryukov, V. M. "Volume reflection efficiency for negative particles in bent crystals." Physics Letters B 765 (February 2017): 276–79. http://dx.doi.org/10.1016/j.physletb.2016.12.032.

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42

Molnár, Orsolya Réka, Judit Somkuti, and László Smeller. "Negative volume changes of human G-quadruplexes at unfolding." Heliyon 6, no. 12 (2020): e05702. http://dx.doi.org/10.1016/j.heliyon.2020.e05702.

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43

Kawahara, Seiichi, Kazuo Sato, and Saburo Akiyama. "Negative excess volume of mixing in polybutadiene/polyisoprene blends." Journal of Polymer Science Part B: Polymer Physics 32, no. 1 (1994): 15–20. http://dx.doi.org/10.1002/polb.1994.090320103.

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44

Series, F., and I. Marc. "Effects of continuous negative airway pressure-related lung deflation on upper airway collapsibility." Journal of Applied Physiology 75, no. 3 (1993): 1222–25. http://dx.doi.org/10.1152/jappl.1993.75.3.1222.

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Continuous negative airway pressure (CNAP) causes a decrease in lung volume, which is known to increase upper airway resistance by itself. We studied how this lung volume change could modify upper airway collapsibility with five normal awake subjects. In a first trial, pressure in a nasal mask (Pm) was progressively decreased in 3- to 5-cmH2O steps (CNAP). In a second trial, changes in lung volumes resulting from CNAP were prevented by applying simultaneously an equivalent level of negative extrathoracic pressure into a poncho-type respirator [isovolumetric CNAP (CNAPisovol)]. For each trial,

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45

Anvari, A. A., L. A. Friedman, D. Greenstein, P. Gochman, N. Gogtay, and J. L. Rapoport. "Hippocampal volume change relates to clinical outcome in childhood-onset schizophrenia." Psychological Medicine 45, no. 12 (2015): 2667–74. http://dx.doi.org/10.1017/s0033291715000677.

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BackgroundFixed hippocampal volume reductions and shape abnormalities are established findings in schizophrenia, but the relationship between hippocampal volume change and clinical outcome has been relatively unexplored in schizophrenia and other psychotic disorders. In light of recent findings correlating hippocampal volume change and clinical outcome in first-episode psychotic adults, we hypothesized that fewer decreases in hippocampal volume would be associated with better functional outcome and fewer psychotic symptoms in our rare and chronically ill population of childhood-onset schizophr

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46

Tomari, Shinya, Thomas Lillicrap, Carlos Garcia-Esperon, et al. "Collateral assessment on magnetic resonance imaging/angiography up to 30 hours after stroke onset." PLOS ONE 19, no. 9 (2024): e0309779. http://dx.doi.org/10.1371/journal.pone.0309779.

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Purpose We aimed to validate hyperintense vessel sign (HVS) on FLAIR imaging or posterior cerebral artery (PCA) laterality on MR angiography beyond 4.5 hours after stroke onset. Materials and methods Data from acute ischemic stroke patients with internal carotid or middle cerebral artery occlusion who underwent CT perfusion imaging at baseline, follow-up MR perfusion imaging and angiography within 30 hours after stroke, without effective recanalization on follow-up imaging, were analysed retrospectively. Patients were separately classified as high or low HVS (>5 or ≤5 slices of HVS), and PC

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47

Paul, A., S. Melanson, T. Junginger, and M. Dehnel. "Creating negative ion beams from neutral gases using a negative hydrogen ion source." Journal of Instrumentation 19, no. 05 (2024): C05053. http://dx.doi.org/10.1088/1748-0221/19/05/c05053.

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Abstract A typical method to produce negative ion beams uses alkali vapour as a medium for a double charge exchange to convert incident positive (1+) beams to negative (1-) beams. Alkali vapours pose a problem in ion production as they are flammable, explosive and cause vacuum surface contamination. Thus, it is advantageous to use non-metallic vapours for charge exchange as it will prevent hazards and the contamination of vacuum surfaces and targets in which the negative ion beams are incident upon. In this paper we will describe and demonstrate the process of creating negative ion beams by im

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48

Yu, Jason, Jack Plageman, and Alan Schwartz. "0487 The effect of negative pressure ventilation on airflow in obstructive sleep apnea subjects undergoing drug induced sleep endoscopy." SLEEP 46, Supplement_1 (2023): A216—A217. http://dx.doi.org/10.1093/sleep/zsad077.0487.

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Abstract Introduction Drug induced sleep endoscopy (DISE) is used to visually characterize pharyngeal airway collapse in obstructive sleep apnea (OSA) to help determine appropriate patients for OSA surgery. The procedure has grown in complexity with the addition of airflow recording and continuous positive airway pressure (CPAP) titration to obtain additional measures of airway collapsibility. Lung volume can also influence airway collapse in OSA but is not evaluated as part of routine DISE. The purpose of this study is to characterize the relationship between changes in lung volume and upper

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49

Cui, Qinglong, Jianglong Wei, Qi Wang, et al. "Negative ion beam extraction in volume mode on the RF negative ion source at ASIPP." Fusion Engineering and Design 161 (December 2020): 112056. http://dx.doi.org/10.1016/j.fusengdes.2020.112056.

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Eisen, Susanne, John D. Davis, Ellen Rauhofer, and Gerard P. Smith. "Gastric negative feedback produced by volume and nutrient during a meal in rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 281, no. 4 (2001): R1201—R1214. http://dx.doi.org/10.1152/ajpregu.2001.281.4.r1201.

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Abstract:

To investigate the gastric negative-feedback control of eating during a meal, we implanted male rats with pyloric cuffs and gastric catheters and gave them access to sweet milk for 30 min after overnight deprivation. Ingested milk and infused milk or saline were confined to the stomach because the pyloric cuffs were closed in all tests. Rats received five consecutive tests with no gastric infusion or with infusions of 3, 6, or 12 ml of milk or saline during the first 6 min of the test meal. Only 12-ml infusions decreased intake significantly compared with no infusion. Because 12 ml of saline i

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