Showing 1,621 - 1,640 results of 1,944 for search '"pi"', query time: 0.07s Refine Results
  1. 1621
  2. 1622

    Output current observation and control of grid-connected modular multilevel converter using a simplified super twisting algorithm sliding mode by Imane Alia, Imad Merzouk, Mehamed Mounir Rezaoui, Hegazy Rezk, Abderezak Lashab

    Published 2025-03-01
    “…A MATLAB-based simulation and comparative analysis were conducted, evaluating SSTA-SMLO and SSTA-SMC against a Sliding Mode Observer (SMO) and a conventional proportional-integral (PI) controller. The results demonstrate that SSTA-SMC and SSTA-SMLO surpass the classic methods.…”
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  3. 1623

    Identification of Hypoxia Signature to Assess the Tumor Immune Microenvironment and Predict Prognosis in Patients with Ovarian Cancer by Chunyan Wei, Xiaoqing Liu, Qin Wang, Qipei Li, Min Xie

    Published 2021-01-01
    “…Gene sets related to the high hypoxia risk group were associated with signaling pathways of cell cycle, MAPK, mTOR, PI3K-Akt, VEGF, and AMPK. Conclusion. The hypoxia risk model could serve as an independent prognostic indicator and reflect overall immune response intensity in the OC microenvironment.…”
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  4. 1624

    Mechanical Properties Measurement of Polymer Films by Bulge Test and Fringe Projection by C. S. Lin, T. L. Horng, J. H. Chen, K. H. Chen, J. J. Wu, C. Y. Chen, S. H. Ma

    Published 2014-01-01
    “…A setup of the bulge test, consisting of single chips and digital on-off valves, was used to achieve automatic precision control of pressure application to gas chamber with a circular polyimide (PI) test film fixed on the opening of it. A deformed image was then obtained via fringe projections with a series of optical apparatuses, and a 3D membrane deformation distribution was further achieved from this deformed image by some image processes that are chiefly through wavelet transformation and phase expansion. …”
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  5. 1625

    Autonomous Streaming Space Objects Detection Based on a Remote Optical System by V. S. Baranova, V. A. Saetchnikov, A. A. Spiridonov

    Published 2021-12-01
    “…The basic algorithm model had developed and tested within the framework of remote control of a simplified optical system based on a Raspberry Pi 4 single-board computer with a modular camera. …”
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  6. 1626

    Analisa Eksperimental Pengujian Turbin Angin Propeller Tiga Sudu Horizontal Axis by Islahuddin - Islahuddin, Sanny Ardhy, Meiki Eru Putra

    Published 2021-10-01
    “…Data recording is done with an automatic system using an octocoupler sensor, anemometer, and a voltage sensor integrated with a raspberry pi 3 microcontroller. From the tests carried out, the wind turbine starts to rotate at a Vcut-in of 1.5 m/s. …”
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  7. 1627
  8. 1628

    Rapid Characterization and Action Mechanism of the Antidiabetic Effect of Diospyros lotus L Using UHPLC-Q-Exactive Orbitrap MS and Network Pharmacology by Shihan Qin, Mingjuan Liu, Sunv Tang, E. Shuai, Ziming Wang, Kaiquan Yu, Wei Cai

    Published 2022-01-01
    “…In addition, 92 relevant antidiabetic targets were mainly related to positive regulation of transcription from the RNA polymerase II promoter, extracellular space, and protein binding, suggesting the involvement of TNF, PI3K-Akt, and HIF-1 signaling pathways in the antidiabetic effect of Diospyros lotus L. …”
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  9. 1629

    Design and fabrication of novel microfluidic-based droplets for drug screening on a chronic myeloid leukemia cell line. by Niloofar Jaafari, Amir Asri Kojabad, Rima Manafi Shabestari, Majid Safa

    Published 2025-01-01
    “…Apoptosis was measured using Annexin/PI staining by flow cytometry.<h4>Results</h4>Significant increased apoptosis was seen in K562 cells treated with imatinib in the microfluidic device compared to cells treated with imatinib in 24- and 96-well plates. …”
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  10. 1630

    Mechanisms Mediating the Effects of γ-Tocotrienol When Used in Combination with PPARγ Agonists or Antagonists on MCF-7 and MDA-MB-231 Breast Cancer Cells by Abhita Malaviya, Paul W. Sylvester

    Published 2013-01-01
    “…In contrast, combined treatment of γ-tocotrienol with PPARγ antagonists resulted in a decrease in transcription activity of PPARγ, along with decreased expression of PPARγ and RXR, increase in PPARγ coactivators, and corresponding decrease in PI3K/Akt mitogenic signaling in these cells. These findings suggest that elevations in PPARγ are correlated with increased breast cancer growth and survival, and treatment that decreases PPARγ expression may provide benefit in the treatment of breast cancer.…”
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  11. 1631

    A Review of Sulfate Removal from Water Using Polymeric Membranes by Jamal Al Mehrate, Sadek Shaban, Amr Henni

    Published 2025-01-01
    “…Techniques discussed include phase inversion (PI), thin-film composite (TFC), and thin-film nanocomposite (TFN) membranes. …”
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  12. 1632
  13. 1633

    MSVPWM Based-SAPF For Harmonic Mitigation in The Distribution Network Under Unbalanced Condition by Haider Muhamad Husen, Salar Ahmed Qadir

    Published 2020-06-01
    “…In this work, synchronous reference frame (d-q) algorithm is selected to detect the harmonic current components, Proportional-integral (PI) controller is utilized to ameliorate the storage of energy in the dc-link capacitor and the multilevel space vector pulse width modulation (MSVPWM) strategy determines the switching pulses of NPC inverter. …”
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  14. 1634

    Effects of silkworm pupa protein on apoptosis and energy metabolism in human colon cancer DLD-1 cells by Xiaojiao Ji, Jing Wang, Aijin Ma, Duo Feng, Yue He, Wenjie Yan

    Published 2022-09-01
    “…Methods: CCK-8 was used to detect cell proliferation rate after 72 h of cell culture for the control group (normal cultured DLD-1 cells) and SPP dose groups; Annexin-V/PI was applied to observe cell apoptosis; XFe24 Extracellular Flux Analyzer was used to detect cell mitochondrial respiratory function and glycolytic function. …”
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  15. 1635
  16. 1636

    Construction of a rodent neural network-skeletal muscle assembloid that simulate the postnatal development of spinal cord motor neuronal network by Haiyang Yu, Shangbin Yang, Yuanfeng Chen, Chuangran Wu, Jing Xu, Yue Yang, Rongjie Wu, Yinan Guo, Zhen Chen, Ying Ding, Xiang Zeng, Ge Li, Yuanhuan Ma, Qiujian Zheng, Yuanshan Zeng, Biqin Lai

    Published 2025-01-01
    “…The coculture process involves the secretion of neurotrophin-3 and insulin growth factor-1 by SkM cells, which activate the related ERK-MAPK and PI3K-AKT signaling pathways in NNs. Inhibition of the ERK-MAPK and PI3K-AKT pathways significantly reduces neuronal differentiation and synaptic maturation of neural cells in NN-SkM assembloids, while also decreasing acetylcholine receptor formation on SkM cells. …”
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  17. 1637
  18. 1638

    Isolation, Characterization, and Molecular Modeling of a Rheumatoid Factor from a Hepatitis C Virus Infected Patient with Sjögren’s Syndrome by Yu-Ching Lee, Keng-Chang Tsai, Sy-Jye Leu, Tuan-Jen Wang, Chia-Yu Liu, Yi-Yuan Yang

    Published 2013-01-01
    “…In the RFL11-Fc interfaces, the CDR-H3 loop forms a finger-like structure extending into the bottom of Fc pocket and resulting in strong ion and cation-pi interactions. Moreover, a process of antigen-driven maturation was proven by somatically mutated VH residues on H2 and H3 CDR loops in the interfaces. …”
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  19. 1639

    Deciphering the dose-dependent effects of thymoquinone on cellular proliferation and transcriptomic changes in A172 glioblastoma cells. by Rachana Pandey, Purushothaman Natarajan, Umesh K Reddy, Wei Du, Cristian Sirbu, Moussa Sissoko, Gerald R Hankins

    Published 2025-01-01
    “…TQ inhibited key pathways such as PI3K-Akt signaling, calcium signaling, focal adhesion, and ECM-receptor interaction in A172 cells. …”
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  20. 1640

    Association of the rs562556 PCSK9 Gene Polymorphism with Reduced Mortality in Severe Malaria among Malian Children by Olesya Fedoryak, Charles Arama, Issa Diarra, Bouréma Kouriba, Michel Chrétien, Majambu Mbikay

    Published 2020-01-01
    “…In this study, we investigated whether carrying the loss-of-function (LOF) rs562556 (c.1420 A > G; p.I474 V) PCSK9 single nucleotide polymorphism (SNP) affected the outcome of severe malaria in children. …”
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