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Artículos de revistas sobre el tema "G-LOC"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Kumar, A., MS Nataraja, and V. Sharma. "Analysis of G-induced Loss of Consciousness (G-LOC) and Almost Loss of Consciousness (A-LOC) incidences in high-performance human centrifuge at Institute of Aerospace Medicine Indian Air Force." Indian Journal of Aerospace Medicine 63 (October 3, 2020): 53–60. http://dx.doi.org/10.25259/ijasm_3_2019.

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Introduction: Institute of Aerospace Medicine (IAM) Indian Air Force (IAF) conducts operational training in Aerospace Medicine for IAF fighter aircrew since 2009. This includes high-G training with qualifying criteria of demonstrating ability of the aircrew to sustain 9G for 5 s in closed-loop run (pilot-in-control) wearing anti-G suit while performing anti-G straining maneuver (AGSM). Incidences of inadvertent almost loss of consciousness (A-LOC)/G-induced loss of consciousness (G-LOC) are an unavoidable unintended consequence of such training. The aim of the paper is to study the incidence o

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2

Lan, Xiaohua, Weiwei Zhu, Junjie Du, et al. "High G Tolerance and Cardiopulmonary Reserve Function in Healthy Air Force Aviators." Aerospace Medicine and Human Performance 94, no. 12 (2023): 911–16. http://dx.doi.org/10.3357/amhp.6297.2023.

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INTRODUCTION: There is no consensus on whether cardiopulmonary reserve affects the risk of gravity-induced loss of consciousness (G-LOC) or almost loss of consciousness (A-LOC). Few previous studies have used cardiopulmonary exercise testing (CPET) to assess cardiopulmonary reserve function (CPRF) of fighter aviators. We compared CPET-related parameters in G-LOC/A-LOC and non-G-LOC/A-LOC fighter aviators to explore the effect of cardiopulmonary reserve function on G tolerance. METHODS: A total of 264 male fighter aviators with more than 500 h of flight experience participated in the study, all

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3

Kumar, Ajay. "In-flight loss of consciousness in a fighter aircrew – G-LOC or No G-LOC conundrum." Indian Journal of Aerospace Medicine 66 (June 1, 2023): 84–89. http://dx.doi.org/10.25259/ijasm_17_2021.

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The differential diagnosis for inflight loss of consciousness in a fighter pilot is G-induced Loss of Consciousness (G-LOC) as it is physiological and 10–20% of fighter pilots may experience it during their career. However, it is very difficult to establish the diagnosis in many cases. Three cases of in-flight episodes of loss of consciousness (LOC) have been discussed in the paper highlighting how to investigate such cases to establish the diagnosis of G-LOC. Three cases have been discussed in the paper where two cases were considered as a case of G-LOC based on the circumstantial evidence an

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Kumar, A., and MS Nataraja. "Describing the continuum from ALOC to G-LOC." Indian Journal of Aerospace Medicine 64 (October 31, 2020): 32–36. http://dx.doi.org/10.25259/ijasm_2_2020.

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Introduction: G-induced loss of consciousness (G-LOC) has been extensively investigated and pathophysiology of the same has been well elucidated in the literature. The syndrome of almost loss of consciousness or ALOC has also been described which is a loose collection of signs and symptoms of a physiological, emotional, and cognitive nature. This is believed to occur under +Gz stress which is insufficient to cause G-LOC. Institute of Aerospace Medicine IAF regularly conducts high-G training for its fighter pilots in the High Performance Human Centrifuge. Episodes of G-LOC and ALOC are unintend

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5

Metzler, Mari M. "G-LOC Due to the Push-Pull Effect in a Fatal F-16 Mishap." Aerospace Medicine and Human Performance 91, no. 1 (2020): 51–55. http://dx.doi.org/10.3357/amhp.5461.2020.

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BACKGROUND: The risks associated with high positive Gz (+Gz) aerobatic flight, especially with respect to +Gz-induced loss of consciousness (G-LOC), are well known. Less appreciated is the effect of negative Gz (−Gz) flight on subsequent +Gz maneuvers, known as the “push-pull effect.” This is an example involving the loss of an F-16 and pilot that was caused by the push-pull effect.CASE REPORT: The mishap pilot (MP) was killed during a training flight when his F-16 crashed without an ejection attempt. The MP, while transitioning from prolonged −Gz flight to sustained +Gz flight, maneuvered the

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6

Sharma, MD, P. Biswal, N. Taneja, and A. Agarwal. "Analysis of incapacitation during +Gz induced loss of consciousness." Indian Journal of Aerospace Medicine 65 (November 8, 2021): 91–96. http://dx.doi.org/10.25259/ijasm_60_2020.

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Introduction: Occurrence of G induced loss of consciousness (G-LOC) during centrifuge training is a known entity. The Indian Air Force is currently undertaking high G training of its fighter pilots in High Performance Human Centrifuge (HPHC) which has significantly higher operational capabilities. The study aimed to analyse the incapacitation periods and myoclonic jerks associated with G-LOC occurring during HPHC training. Material and Methods: Records of episodes of 161 G-LOC during closed loop Rapid Onset Rates (ROR) runs over a period of 7 years from 2011 to 2017 were analyzed. The video re

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Raja, Rameez, S. Pirzada, and Shane Redmond. "On locating numbers and codes of zero divisor graphs associated with commutative rings." Journal of Algebra and Its Applications 15, no. 01 (2015): 1650014. http://dx.doi.org/10.1142/s0219498816500146.

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Let R be a commutative ring with identity and let G(V, E) be a graph. The locating number of the graph G(V, E) denoted by loc (G) is the cardinality of the minimal locating set W ⊆ V(G). To get the loc (G), we assign locating codes to the vertices V(G)∖W of G in such a way that every two vertices get different codes. In this paper, we consider the ratio of loc (G) to |V(G)| and show that there is a finite connected graph G with loc (G)/|V(G)| = m/n, where m < n are positive integers. We examine two equivalence relations on the vertices of Γ(R) and the relationship between locating sets and

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8

Zhao, Zeyang, Peng Dong, Bo Fu, Dan Wu, and Zhizhong Zhao. "Labile Fraction of Organic Carbon in Soils from Natural and Plantation Forests of Tropical China." Sustainability 16, no. 17 (2024): 7836. http://dx.doi.org/10.3390/su16177836.

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Labile organic carbon (LOC) is a key driver of forest ecosystem function and may mitigate global climate change through carbon sequestration. To explore the accumulation of LOC in tropical forest soils, we sampled from both planted and natural forests in Hainan Province, the southernmost province of China. We analyzed the concentrations of total organic carbon (TOC) and LOC and characterized various physicochemical properties such as pH and soil texture to understand their inter-relationships in tropical natural and plantation forests. Although the TOC concentration was higher in plantation fo

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9

Li, Yifeng, Jinghui Yang, Baohui Li, Zhao Jin, Lihui Zhang, and Minghao Yang. "Investigation of early warning of EMG on human G-LOC under centrifuge high G load." Journal of Physics: Conference Series 2898, no. 1 (2024): 012003. http://dx.doi.org/10.1088/1742-6596/2898/1/012003.

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Abstract This paper first briefly introduces the early warning indicators and techniques of G-induced human loss of consciousness that is G-LOC under G load action,and puts forward the necessity of exploring and studying EMG signal under G load. EMG signals of the human body are obtained from the human centrifuge, and EMG under G load is analyzed by using the two-condition analysis method in foreign literature. Different from the research in foreign literature, in addition to studying the EMG characteristics under centrifuge G load, the change characteristics of EMG at other muscles are also i

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10

Kumar, Ajay. "+G_z Standards for the Indian Air Force." Aerospace Medicine and Human Performance 94, no. 10 (2023): 780–85. http://dx.doi.org/10.3357/amhp.6197.2023.

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INTRODUCTION: +Gz tolerance is an important aspect for the success of fighter aircrew as it reflects the ability of the neuro-cardiovascular response to compensate and prevent adverse manifestations such as gray-out, black-out, and G-induced loss of consciousness (G-LOC) under high-G stress.METHODS: The data for aircrew taking the Operational Training in Aerospace Medicine for Fighters course at the Institute of Aerospace Medicine Indian Air Force (IAF) from January 2017 to December 2020 were analyzed to assess the effectiveness of the existing training goal to recommend a G-tolerance standard

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11

Przewodzka, Anna, Stefan P. Gaździński, Michał Janewicz, and Krzysztof Kowalczuk. "PHYSIOLOGICAL CORRELATES OF ALMOST LOSS OF CONSCIOUSNESS (A-LOC) DURING DYNAMIC FLIGHT SIMULATION (DFS) ON HUMAN CENTRIFUGE: A CASE REPORT." Polish Journal of Aviation Medicine, Bioengineering and Psychology 25, no. 2 (2020): 38–43. http://dx.doi.org/10.13174/pjambp.15.12.2020.04.

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Introduction: G-LOC is still a threat for aircrew of high performance aircrafts. It is evoked by a high level of +Gz acceleration causing a deficit of brain oxygenation. Although near-infrared spectroscopy (NIRS) was used to identify brain oxygenation decreases preceding G-LOC, it is not used regularly in aero-medicine research in Poland. Here, we report the physiological correlates of Almost Loss of Consciousness (A-LOC) that occurred during a research project. Method: During Dynamic Flight Simulation training on a human centrifuge one pilot experienced momentaneous confusion which was record

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Liu, Xianbin, Xiucheng Zeng, Xiaoming Zou, et al. "Responses of Soil Labile Organic Carbon to a Simulated Hurricane Disturbance in a Tropical Wet Forest." Forests 9, no. 7 (2018): 420. http://dx.doi.org/10.3390/f9070420.

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Hurricanes are an important disturbance in the tropics that can alter forest ecosystem properties and processes. To understand the immediate influence of hurricane disturbance on carbon cycling, we examined soil labile organic carbon (LOC) in a Canopy Trimming Experiment (CTE) located in the Luquillo Experimental Forest of Puerto Rico. We trimmed tree canopy and deposited debris (CTDD) on the forest ground of the treatment plots in December 2014, and collected floor mass samples and 0–10 cm soil samples three weeks before the treatment, as well as at scheduled intervals for 120 weeks after the

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13

Kurihara, Koichi, Azusa Kikukawa, Asao Kobayashi, and Toshio Nakadate. "Frontal cortical oxygenation changes during gravity-induced loss of consciousness in humans: a near-infrared spatially resolved spectroscopic study." Journal of Applied Physiology 103, no. 4 (2007): 1326–31. http://dx.doi.org/10.1152/japplphysiol.01191.2006.

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Gravity (G)-induced loss of consciousness (G-LOC), which is presumably caused by a reduction of cerebral blood flow resulting in a decreased oxygen supply to the brain, is a major threat to pilots of high-performance fighter aircraft. The application of cerebral near-infrared spectroscopy (NIRS) to monitor gravity-induced cerebral oxygenation debt has generated concern over potential sources of extracranial contamination. The recently developed NIR spatially resolved spectroscopy (SRS-NIRS) has been confirmed to provide frontal cortical tissue hemoglobin saturation [tissue oxygenation index (T

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14

Ohrui, Nobuhiro, Yuji Iino, Koichiro Kuramoto, et al. "G-Induced Loss of Consciousness Prediction Using a Support Vector Machine." Aerospace Medicine and Human Performance 95, no. 1 (2024): 29–36. http://dx.doi.org/10.3357/amhp.6301.2024.

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INTRODUCTION: Gravity-induced loss of consciousness (G-LOC) is a major threat to fighter pilots and may result in fatal accidents. The brain has a period of 5–6 s from the onset of high +Gz exposure, called the functional buffer period, during which transient ischemia is tolerated without loss of consciousness. We tried to establish a method for predicting G-LOC within the functional buffer period by using machine learning. We used a support vector machine (SVM), which is a popular classification algorithm in machine learning.METHODS: The subjects were 124 flight course students. We used a lin

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15

Khatua, SS, M. Dahiya, A. Gowda, and P. Sannigrahi. "Physiological interpretation of almost loss of consciousness." Indian Journal of Aerospace Medicine 63 (November 7, 2019): 28–32. http://dx.doi.org/10.25259/ijasm_2019_6.

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Background: The phenomenon of almost loss of consciousness (A-LOC) is although known to the aviation fraternity since the 1980s, it is not well researched. Very few studies have attempted to elaborate the characteristics of A-LOC. The present study is a retrospective analysis which has endeavored to address the lacunae in literature. Materials and Methods: A retrospective analysis of the G training data in high-performance human centrifuge for a time span of 4 years (2009–2013) was carried out. Results: A total of 71 A-LOC incidents were reported and were analyzed for better understanding of A

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16

Copeland, Kyle, and James E. Whinnery. "Cerebral Blood Flow Based Computer Modeling of G_z-Induced Effects." Aerospace Medicine and Human Performance 94, no. 5 (2023): 409–14. http://dx.doi.org/10.3357/amhp.6179.2023.

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BACKGROUND: There is continued interest in acceleration (G) effects in civil aviation, as G-induced loss of consciousness (G-LOC), impaired consciousness, and visual effects play a role in aerobatic, agricultural, and military aviation accidents.METHODS: A software model [the Civil Aerospace Medical Institute G-Effects Model (CGEM)] based on physical and physiological variables related to in-flight tissue resupply and using oxygen flow as a proxy for supply availability, was developed to evaluate risk of G-LOC and related phenomena in aeronauts. Aeronauts were modeled using several parameters,

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Ata, Nazim, Berna Aytac, Dijan Ertemir, Muzaffer Cetinguc, and Ebru Yazgan. "Effect of aeromedical training on anxiety levels of ab initio pilots." Aircraft Engineering and Aerospace Technology 94, no. 5 (2022): 799–805. http://dx.doi.org/10.1108/aeat-10-2021-0298.

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Purpose Aeromedical training is meant to train aircrew in combating physiological problems that they might face in flight. Given the importance of the training, there are limited studies in the literature investigating the anxiety levels during aeromedical training along with training outcomes. This study aims to assess the untrained participants’ anxiety levels before and after aeromedical training, investigate the differences in anxiety levels across different physiological training devices and determine whether participants’ anxiety levels affect their G tolerances. Design/methodology/appro

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18

Kim, Sungho, Dongsoo Kim, Taehwan Cho, Yongkyun Lee, and Booyong Choi. "Analysis on Electromyogram(EMG) Signals by Body Parts for G-induced Loss of Consciousness(G-LOC) Prediction." Journal of the Korea Institute of Military Science and Technology 20, no. 1 (2017): 119–28. http://dx.doi.org/10.9766/kimst.2017.20.1.119.

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19

Thoma, Janine L., Stuart A. McNelles, Alex Adronov, and Jean Duhamel. "Direct Measure of the Local Concentration of Pyrenyl Groups in Pyrene-Labeled Dendrons Derived from the Rate of Fluorescence Collisional Quenching." Polymers 12, no. 12 (2020): 2919. http://dx.doi.org/10.3390/polym12122919.

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The model-free analysis (MFA) was applied to measure the average rate constant (<k>) for pyrene excimer formation (PEF) in a series of pyrene-labeled dendrons referred to as Pyx-G(N), where x (= 2N) is the number of pyrenyl labels born by a dendron of generation N ranging from 1 to 6. <k> was measured in four different solvents, namely tetrahydrofuran (THF), toluene, N,N-dimethylformamide (DMF), and dimethylsulfoxide (DMSO). <k> was found to increase linearly with increasing local pyrene concentration ([Py]loc), where [Py]loc had been determined mathematically for the Pyx-G(N

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20

Sevost'yanov, Evgenii, and Alexander Ukhlov. "Sobolev mappings and moduli inequalities on Carnot groups." Ukrainian Mathematical Bulletin 17, no. 2 (2020): 215–33. http://dx.doi.org/10.37069/1810-3200-2020-17-2-5.

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We study the mappings that satisfy moduli inequalities on Carnot groups. We prove that the homeomorphisms satisfying the moduli inequalities ($Q$-homeomor\-phisms) with a locally integrable function $Q$ are Sobolev mappings. On this base in the frameworks of the weak inverse mapping theorem, we prove that, on the Carnot groups $\mathbb G,$ the mappings inverse to Sobolev homeomorphisms of finite distortion of the class $W^1_{\nu,\loc}(\Omega;\Omega')$ belong to the Sobolev class $W^1_{1,\loc}(\Omega';\Omega)$.

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Nguyen, Nguyen, and Savage. "Properties of Pectin Extracted from Vietnamese Mango Peels." Foods 8, no. 12 (2019): 629. http://dx.doi.org/10.3390/foods8120629.

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This study was carried out to investigate the properties of pectin extracted from Vietnamese mango peels that have been discarded as waste. Three different mango cultivars named Hoa Loc, Ghep and Cat Chu at three different maturities were studied. Pectin extracted from immature, ripe and overripe stages ranged from 18.4 to 31.7 g/100 g dry weight (DW); the highest yields were obtained from the ripe fruits. Ghep peels contained the highest pectin amounts which ranged from 24.2 to 31.7 g/100 g DW, followed by Cat Chu (19.2 to 26.5 g/100 g DW) and Hoa Loc peels (18.4 to 24.1 g/100 g DW). Except f

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Gustafsson, Björn, Bernard Heron та Jacqueline Mossino. "Γ‐convergence of stratified media with measure‐valued limits". Asymptotic Analysis 22, № 3-4 (2000): 261–302. https://doi.org/10.3233/asy-2000-385.

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We consider energy functionals, or Dirichlet forms, [Formula: see text] for a class $\mathcal{G}$ of bounded domains $\varOmega\subset\mathbb{R}^N$ , with $\varepsilon >0$ a fine structure parameter and with symmetric conductivity matrices $A^\varepsilon=(a^\varepsilon_{ij})\in L_\mathrm{loc}^\infty(\mathbb{R})^{N\times N}$ which are functions only of the first coordinate $x_1$ and which are locally uniformly elliptic for each fixed $\varepsilon>0$ . We show that if the functions (of $x_1$ ) $b^\varepsilon_{11}={1}/{a^\varepsilon_{11}}$ , $b^\varepsilon_{1j}={a^\varepsilon_{1j}}/{a^\vare

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23

Carter, Richard J., and James F. O'Bryon. "Live Fire Test and Evaluation Ergonomics Projects." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 44, no. 37 (2000): 670–73. http://dx.doi.org/10.1177/154193120004403733.

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The live fire test and evaluation (LFT&E) program is oriented towards providing a realistic assessment of the survivability and lethality of a military system. A component of every live fire test is an assessment of crew survivability. Three major ergonomics related projects, operational requirements-based casualty assessment (ORCA), combined toxic gas modeling, and gravitational loss of consciousness (G-LOC), are described. ORCA is a comprehensive standardized methodology for assessing personnel casualties following weapon induced injury. The combined toxic gas model is an incapacitation

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Kim, Sungho, Taehwan Cho, Yongkyun Lee, Hyojin Koo, Booyong Choi, and Dongsoo Kim. "G-LOC Warning Algorithms Based on EMG Features of the Gastrocnemius Muscle." Aerospace Medicine and Human Performance 88, no. 8 (2017): 737–42. http://dx.doi.org/10.3357/amhp.4781.2017.

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Tran, Thanh Thang, Thi Thuy Tien Le, and Hoang Phuc Nguyen. "Effectiveness of KMnO4 and activated carbon on the quality and storage properties of mango fruit." Advances in Horticultural Science 38, no. 3 (2024): 233–38. http://dx.doi.org/10.36253/ahsc-15769.

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Cat Hoa Loc mango (Mangifera indica L.) is a well-known variety in Vietnam because of its distinct taste and aroma. However, it has a short shelf life and can suffer post-harvest losses if not handled and packaged correctly. The demand for fresh Cat Hoa Loc mangoes has been increasing worldwide, and this has led to the development of effective handling methods to extend their shelf life. To address this issue, this study was conducted to evaluate the effectiveness of KMnO4 and activated carbon in preserving the quality and shelf life of Cat Hoa Loc mangoes in Vietnam. The Cat Hoa Loc mango var

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26

Kalaj, David. "Quasiconformal solutions to elliptic partial differential equations." Annales Fennici Mathematici 48, no. 1 (2023): 361–74. http://dx.doi.org/10.54330/afm.129643.

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In this paper, we assume that \(G\) and \(\Omega\) are two Jordan domains in \(\mathbb{R}^n\) with \(\mathcal{C}^2\) boundaries, where \(n\ge 2\), and prove that every quasiconformal mapping \(f\in\mathcal{W}^{2,1+\epsilon}_{\mathrm{loc}}\) of \(G\) onto \(\Omega\), satisfying the elliptic partial differential inequality \(|L_ A[f]|\lesssim (\|Df\|^2+|g|)\), with \(g\in\mathcal{L}^p(G)\), where \(p>n\), is Lipschitz continuous. The result is sharp since for \(p=n\), the mapping \(f\) is not necessarily Lipschitz continuous. This extends several results for harmonic quasiconformal mappings.&

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Perveyev, V. I., G. A. Sukhanova, I. V. Perveyev, and M. I. Avakov. "Intraosseous autoserotherapy of lumbar osteochondrosis." Bulletin of Siberian Medicine 3, no. 3 (2004): 53–59. http://dx.doi.org/10.20538/1682-0363-2004-3-53-59.

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138 patients with lumbar osteochondrosis (LOC) in age of 32—73 years with apparent pain syndrome and neurologic manifestations have been examined, these patients have received 316 autoserotherapy (AST) procedures. It has been revealed that in LOC patients a disturbance of coagulation blood properties and micricirculation as well as immunoglobulin M and G concentration increase, circulating immune complexes (CIC) increase, increase of kinin activity by more than 2 times had taken place. Course of AST procedures permits to decrease the blood coagulability and kallikrein activity almost up to the

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Argyle, Sonia. "A New Greek Grammarian." Classical Quarterly 39, no. 2 (1989): 524–35. http://dx.doi.org/10.1017/s0009838800037551.

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In his exposition of MS Vat. gr. 2226 (V) in 1888, Leopold Cohn brought to light two consecutive grammatical treatises, both attributed to Aelius Herodian: the Περ⋯ ⋯μαρτημ⋯νων λ⋯ξεων(here loc. prav.), containing seventy paragraphs, and the Φιλ⋯ταιρος (here Philet.) with 312 glosses. Both had been published in part: fifty-four paragraphs of loc. prav. by G. Hermann in 1801 from MS Mon. gr. 529 (M) and a version of fifty-nine paragraphs by J. Cramer under the title of Περ⋯ τ⋯ν ζητουμ⋯νων κατ⋯ κλ⋯σιν παντ⋯ς λ⋯γου μερ⋯ν;. Glosses 1–78 of Philet. were published by J. Pierson (1759) from a copy of

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Luo, Jack K., Y. Q. Fu, Greg Ashley, and Williams I. Milne. "Integrated ZnO Film Based Acoustic Wave Microfluidics and Biosensors." Advances in Science and Technology 67 (October 2010): 49–58. http://dx.doi.org/10.4028/www.scientific.net/ast.67.49.

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Lab-on-a-chip (LOC) is one of the most important microsystems with promising applications in microanalysis, drug development and diagnosis, etc. We have been developing a LOC biodetection system using acoustic wave as a single actuation mechanism for both microfluidics and biosensing using low cost piezoelectric ZnO film. Surface acoustic waves (SAW) coupled into the liquid will induce acoustic streaming, or move the droplet on the surface. These have been utilized to make SAW-based micropumps and micromixers which are simple in structure, easy to fabricate, low cost, reliable and efficient. S

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Gutlyanskii, Vladimir, Vladimir Ryazanov, and Eduard Yakubov. "Dirichlet problem for Poisson equations in Jordan domains." Proceedings of the Institute of Applied Mathematics and Mechanics NAS of Ukraine 32 (December 28, 2018): 30–41. http://dx.doi.org/10.37069/1683-4720-2018-32-4.

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First, we study the Dirichlet problem for the Poisson equations \(\triangle u(z) = g(z)\) with \(g\in L^p\), \(p>1\), and continuous boundary data \(\varphi :\partial D\to\mathbb{R}\) in arbitrary Jordan domains \(D\) in \(\mathbb{C}\) and prove the existence of continuous solutions \(u\) of the problem in the class \(W^{2,p}_{\rm loc}\). Moreover, \(u\in W^{1,q}_{\rm loc}\) for some \(q>2\) and \(u\) is locally Hölder continuous. Furthermore, \(u\in C^{1,\alpha}_{\rm loc}\) with \(\alpha = (p-2)/p\) if \(p>2\). Then, on this basis and applying the Leray-Schauder approach, we obtain t

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Shahed, A. R., J. A. Barber, S. Galindo, and P. M. Werchan. "Rat Brain Glucose and Energy Metabolites: Effect of + Gz (Head-to-Foot Inertial Load) Exposure in a Small Animal Centrifuge." Journal of Cerebral Blood Flow & Metabolism 15, no. 6 (1995): 1040–46. http://dx.doi.org/10.1038/jcbfm.1995.130.

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A unique small animal centrifuge with on-line physiological monitoring and brain tissue collection (in < 1 s) capability was used to investigate the effect of increasing + Gz levels, exposure duration, number of exposures, and time course of metabolic changes in the rat brain. To determine the + Gz tolerance, rats were exposed to +7.5 to 25 Gz (30 s each) and EEG was monitored. G-induced loss of consciousness ( G-LOC) defined as isoelectric EEG (I-EEG) occurred only at +22.5 and 25 Gz within 14.5 ± 3 s. To study the effect of increasing + Gz levels on metabolism, rats were exposed to either

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Lich, Nguyen Quang, Le Dai Vuong, Te Minh Son, and Ve Quoc Linh. "Physicochemical and Biological Characteristics of Shrimp Pond Sludge in the Thua Thien Hue Province, Vietnam." Journal of Experimental Biology and Agricultural Sciences 10, no. 5 (2022): 1024–32. http://dx.doi.org/10.18006/2022.10(5).1024.1032.

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This study has been carried out to analyze the physical and biological indicators of shrimp pond sludge samples obtained from the Phu Vang and Phu Loc districts of the Thua Thien Hue Province, Vietnam. All standard methodologies have been used to analyze the selected parameters like pH, organic carbon, total nitrogen, total phosphate, and microbial density. The results of the study revealed that the sludge was characterized by a neutral to alkaline pH (6.9 - 7.5), and the total organic carbon content was in the range of 103.8–173.5 mg/kg. The sludge was rich in organic matter (17.8–29.9%), tot

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Luna-Torres, Joaquín. "Filters and compactness on small categories and locales." Open Journal of Mathematical Sciences 6, no. 1 (2022): 1–13. http://dx.doi.org/10.30538/oms2022.0174.

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In analogy with the classical theory of filters, for finitely complete or small categories, we provide the concepts of filter, \(\mathfrak{G}\)-neighborhood (short for "Grothendieck-neighborhood") and cover-neighborhood of points of such categories, to study convergence, cluster point, closure of sieves and compactness on objects of that kind of categories. Finally, we study all these concepts in the category \(\mathbf{Loc}\) of locales.

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34

Paes, Ésio de Castro, Fabiane Pereira Machado Dias, Iara Oliveira Fernandes, et al. "Carbon Management Index and Carbon Stock of a Cohesive Oxisol Under Different in the Region Northeast of Brazil." Journal of Agricultural Science 10, no. 9 (2018): 284. http://dx.doi.org/10.5539/jas.v10n9p284.

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The objective of this study was to evaluate the soil organic carbon fractions and the carbon management index (CMI) in a cohesive oxisol under different uses. Conventional cassava planting (CC), pasture (PP), and 7- and 12-year agroforestry systems (AF7 and AF12, respectively), were tested against secondary forest (SF). Soil samples of these areas were physically fractionated in order to determine total organic matter (TOC) as well as the labile- (LOC) and non-labile (NOC) fractions of the soil organic matter, as well as carbon management index (CMI). Total organic C ranged from 14.17 to 27.20

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35

Croft, Rodney J., Roger Kölegård, Arne Tribukait, Nigel A. S. Taylor, and Ola Eiken. "Effects of Acceleration-Induced Reductions in Retinal and Cerebral Oxygenation on Human Performance." Aerospace Medicine and Human Performance 92, no. 2 (2021): 75–82. http://dx.doi.org/10.3357/amhp.5731.2021.

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BACKGROUND: Ischemic hypoxia induced by suprathreshold G-force loading can adversely affect vision, cognition, and lead to loss of consciousness (LOC). The purpose of this study was to determine whether reductions in cerebral oxygenation, caused by subthreshold G-forces (up to 4 Gz and of limited durations that do not lead to LOC), would affect visual perception and working memory performance.METHODS: Sixteen subjects performed visual perception and working memory tasks both before and during Gz exposures (1, 2.2, 3, 4 with leg pressurization, 4 with leg and abdomen pressurization) within a hu

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36

Khoi, Tao Anh, Le Thi Thanh Binh, Nguyen Trung Kien Nguyen Trung Kien, and Tran Ngoc Thao. "Effect of Substrate on Growth and Development of Ganaderma Lucidum Karst Cultivation in Bao Loc - Lam Dong - Vietnam." Natural Science Journal 5, no. 1 (2024): 19–32. http://dx.doi.org/10.47941/nsj.1912.

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Purpose: The study of "the influence of substrate on growth and development of Ganaderma lucidum cultivation in Bao Loc - Lam Dong" was conducted at the Technology College of economy and technology of Bao Loc from May to September 2023 with the aims of selectingsuitable substrates for growth and development in Reishi, completed the processes of Reishi artificial cultivation in Bao loc. Methodology: Database involved nine treatments: rubber tree sawdust 75% + rice bran 25% supplemented urea 0,25%; rubber tree sawdust 95% + rice bran 5% supplemente urea 0,25% and DAP 0,25%; rubber tree sawdust 1

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37

Pirzada, S., Rameez Raja, and Shane Redmond. "Locating sets and numbers of graphs associated to commutative rings." Journal of Algebra and Its Applications 13, no. 07 (2014): 1450047. http://dx.doi.org/10.1142/s0219498814500479.

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For a graph G(V, E) with order n ≥ 2, the locating code of a vertex v is a finite vector representing distances of v with respect to vertices of some ordered subset W of V(G). The set W is a locating set of G(V, E) if distinct vertices have distinct codes. A locating set containing a minimum number of vertices is a minimum locating set for G(V, E). The locating number denoted by loc (G) is the number of vertices in the minimum locating set. Let R be a commutative ring with identity 1 ≠ 0, the zero-divisor graph denoted by Γ(R), is the (undirected) graph whose vertices are the nonzero zero-divi

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38

Güven, Aydın Zeynep, and Rüya Şamlı. "Weka Öznitelik Seçim Metotları ile Makine Öğrenmesi Algoritmalarının Performanslarının Karşılaştırılması." Euroasia Journal of Mathematics, Engineering, Natural & Medical Sciences 11, no. 37 (2024): 1–13. https://doi.org/10.5281/zenodo.14568594.

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Bu çalışmada yazılım hata tahmini konusunda literatürde yayınlanmış birçok yayında yer alan öznitelik seçimi konusu araştırılmıştır. Öznitelik seçimi, genellikle veri setlerindeki ilgisiz ve gereksiz öznitelikleri azaltarak sınıflandırıcının doğruluğunu arttırmak amaçlı kullanılır Çalışmada NASA veri setleri ve deneysel veri seti üzerinde farklı özellik çıkarım metotları denenerek, seçilen en uygun iki tanesi olan Cfs Subset Eval algoritması ve Temel Bileşen öznitelik seçim metotları ile işlemler

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39

Tervo, Jouko. "On Solvability of Linear Partial Differential Equations in Local Spaces $\mathcal B^{\mathrm {loc}}_{p,k} (G)$." Zeitschrift für Analysis und ihre Anwendungen 7, no. 2 (1988): 99–112. http://dx.doi.org/10.4171/zaa/287.

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40

Bagshaw, R. J., and J. E. Whinnery. "Contribution of skeletal muscle activity to the natural history of acceleration-induced loss of consciousness (G-LOC)." Medical Hypotheses 30, no. 2 (1989): 123–28. http://dx.doi.org/10.1016/0306-9877(89)90097-2.

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41

Pires Junior, Paulo, Tainah De Paula Lima, Thiago Teixeira Guimarães, Breno Ricardo De Araújo Leite, Adriano Percival Calderaro Calvo, and André Brand Bezerra Coutinho. "Anti-G StraiAnti-G Straining Maneuver." Revista Agulhas Negras 8, Especial (2024): 26–36. http://dx.doi.org/10.70545/ran.v8iespecial.12810.

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Background: Increasingly valuable, sophisticated, and powerful aircraft are developed and incorporated into the armed forces. Technological advances are notable for increasing physiological load during the flight, making human resources a limiting factor in such operations. It is necessary to understand the physiological demands to which aircraft pilots are exposed, especially combat pilots. Objective: This study aimed to present: i. the physiological consequences on the human body due to high accelerative forces during high-performance flights; ii. the efficiency of the Anti-G Straining Maneu

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42

PIROGOV, YU F. "VECTOR BOSON DOMINANCE OF ELECTROWEAK INTERACTIONS." Modern Physics Letters A 08, no. 33 (1993): 3129–38. http://dx.doi.org/10.1142/s0217732393002075.

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The linearization of the nonlinear standard model G/H= SU(3) L × U(1)/SU(2) L × U(1) via the hidden local symmetry H loc = SU(2) L × U(1) is considered. Mixing of the light elementary gauge bosons of the standard model with the dynamically generated heavy composite vector bosons is studied under the hypothesis of vector boson dominance. The model is theoretically consistent as quantum field theory and phenomenologically acceptable. It can be used as a guide to study systematically the deviations from the standard model due to a common substructure of leptons, quarks and Higgs bosons.

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43

Choi, Hyunji, Haerin Paik, Yeon Hee Hong, Seul Ki Kim, and Jung Ryeol Lee. "#308 : Comparative Outcomes of Robot-Assisted and Conventional Laparoscopic Ovarian Cystectomy for Endometrioma: Evaluating Ovarian Reserve, Recurrence, and Pregnancy Success." Fertility & Reproduction 05, no. 04 (2023): 533–34. http://dx.doi.org/10.1142/s266131822374290x.

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Background and Aims: Laparoscopic ovarian cystectomy has been the mainstay of surgical methods for endometriosis. Recently, robot-assisted ovarian cystectomy using Da VinciⓇ Xi™surgical system has been successfully introduced into clinical practice and provides specific technical advantages. We aimed to compare robot-assisted ovarian cystectomy (RAOC) and laparoscopic ovarian cystectomy (LOC) in terms of ovarian reserve, recurrence, and pregnancy outcomes. Method: This was a retrospective study in a single tertiary hospital. Patients who underwent RAOC from January 2018 to December 2022 were i

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44

Gastel, Janvan, Marc Quirynen, Wim Teughels, Martine Pauwels, Wim Coucke, and Carine Carels. "Microbial Adhesion on Different Bracket Types in vitro." Angle Orthodontist 79, no. 5 (2009): 915–21. http://dx.doi.org/10.2319/092908-507.1.

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Abstract Objective: To test the hypothesis that there are differences in total bacterial counts and capacity for biofilm formation between seven different bracket types. Material and Methods: By means of an in vitro experiment, seven commercially available bracket systems (Damon [A], Clarity [B], Mystique [C], Speed [D], Victory MBT [E], Micro-loc [F], and Generus [G]) were compared. A total of 25 premolar brackets of each bracket system were incubated in brain heart infusion medium containing the saliva and bacteria of two orthodontic patients. After 72 hours, the amounts of aerobe and anaero

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45

Sung, Jun-Young, In-Ki Kim, and Deok-Hwa Jeong. "Gravitational Acceleration Test Results by Lifestyle and Physical Fitness of Air Force Cadets." Aerospace Medicine and Human Performance 94, no. 5 (2023): 384–88. http://dx.doi.org/10.3357/amhp.6155.2023.

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BACKGROUND: The purpose of this study was to analyze G test results according to the Three-Factor Eating Questionnaire (TFEQ), body composition, and physical fitness of fourth-grade air force cadets. This was done to identify the relationship between the TFEQ, body composition, and G resistance, in order to provide basic data for pilots and air force cadets to strengthen G tolerance.METHODS: From the Republic of Korea Air Force Academy (ROKAFA), 138 fourth-year cadets were assessed using the TFEQ and for body composition and physical fitness. Based on these measurement results, a G test result

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46

Thaker, P. H., C. Sun, D. C. Bodurka, et al. "Spirituality, quality of life, and locus of control in a palliative care setting." Journal of Clinical Oncology 24, no. 18_suppl (2006): 18529. http://dx.doi.org/10.1200/jco.2006.24.18_suppl.18529.

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18529 Background: A patient’s spirituality/religious beliefs have a profound role on how one copes with disease & on quality of life (QOL). Perceptions of control play an important role in coping not only with stressful experiences, but also in health outcomes. Therefore, the primary objective was to determine whether patients’ spirituality/ religiosity correlates with quality of life and locus of control. Methods: As part of a pilot study, pts presenting for initial outpatient evaluation in the Department of Symptom Control & Palliative Care were enrolled and completed self-report mea

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47

Aschenbrenner, Daniel, Oliver Friedrich, and Daniel F. Gilbert. "3D Printed Lab-on-a-Chip Platform for Chemical Stimulation and Parallel Analysis of Ion Channel Function." Micromachines 10, no. 8 (2019): 548. http://dx.doi.org/10.3390/mi10080548.

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Functional imaging has been a widely established method for the assessment of ion channel function in vitro. Conventional infrastructure used for in vitro functional analysis of ion channels is typically proprietary, non-customizable, expensive, and requires a high level of skill to use and maintain. 3D desktop printing, which is employed in the rapid prototyping field, allows for quick engineering of alternatives to conventional imaging infrastructure that are customizable, low cost, and user friendly. Here, we describe an ultra-low-cost microfluidic lab-on-a-chip (LOC) device manufactured us

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48

Grygoryan, R., and A. Degoda. "A MATHEMATICAL MODEL OF HUMAN HEMODYNAMICS FOR USE IN SPECIAL SOFTWARE SIMULATING PILOTS' PHYSIOLOGICAL RESPONSES TO SUSTAINED GZ ACCELERATIONS." Znanstvena misel journal, no. 90 (May 27, 2024): 4–11. https://doi.org/10.5281/zenodo.11357990.

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A quantitative model (QM) of human hemodynamics describing the influences of gravity and extravascular pressure on blood flow is proposed. QM is a basis for creating special software that simulates the main physiological responses to dynamic <strong>±</strong>G<sub>Z</sub> accelerations. In QM, a sitting person's cardiovascular system (CVS) is presented by a set of arterial and venous compartments localized at different distances from the horizontal level. Functions of the right and left ventricles are modeled as transformers of input pressure to output blood flow. Heart rate and ventri

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49

Attinger, Pascal. "Remarques à propos de F. Karahashi, The Locative-Terminative Verbal Infix in Sumerian." Nouvelles Assyriologiques Brèves et Utilitaires N.A.B.U. 55, no. 3 (2007): 69–71. https://doi.org/10.5281/zenodo.3559665.

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Dans ASJ 22 (2000 [paru en 2005]) 113-133, Mme F. Karahashi a remis en question l'analyse de préfixes du locatif-terminatif (/directif) en élément pronominal + /i/ (ELS 234-238 ; v. en dernier lieu G. Zolyomi, dans : M.P. Streck [ed.], Sprachen des Alten Orients [2006] 30) et, reprenant une idée de M. Civil, a proposé de dériver la série en -/i/ de la série en -/a/ suivi d'un loc.-term. -*I- : bi<sub>2</sub>- < *ba + I, -ri- < *ra + I, etc. (cf. surtout pp. 116 sq.). Elle synthétise les résultats obtenus dans l

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50

Hauge, Erling. "Spiders (Araneae) from square samples and pitfall traps in coastal heathland, western Norway. Habitat preference, phenology and distribution." Fauna norvegica 20 (October 11, 2024): 31–42. http://dx.doi.org/10.5324/fn.v20i0.6001.

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Square samples were taken at intervals of 3 - 4 weeks (early spring 1972 - late summer 1973) in a heterogenous plant association dominated by Calluna vulgaris and several moss species (Loc.I), and in a homogenous, humid Sphagnum mat (Loc.II) with very sparse Calluna. Probably due to an unusually dry spring/early summer in 1972 the density of spiders decreased drastically towards mid-summer at Loc.I, especially the linyphiids and in particular their juveniles (less so at Loc.II). During late autumn/early winter a maximum of approximately 300 and 200 specimens per square meter was reached at Loc

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