Showing 301 - 320 results of 483 for search 'Negative temperature efficiency', query time: 0.13s Refine Results
  1. 301

    Green corrosion inhibition of mild steel in acidic media using Wahlenbergia riparia extract: gravimetric via CCD-RSM, electrochemical and surface analyses by Precious Peter Didam, Victor Olatunji Ajibola, Zakka Israila Yashim, Abuchi Elebo

    Published 2025-09-01
    “…The analyses from OCP, PDP and EIS indicated shifted less negative as the WRE concentration increases with inhibition efficiencies of 96.67 % and 93.50 % at 0.5 g/L, respectively. …”
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  2. 302

    Vanadium remediation from polluted wastewater using a novel non-conventional adsorbent by Manar Banwan Hasan, Suha Anwer Ibrahim, Nisreen Mizher Rahmah, Thekra Atta Ibrahim, Alaa Hani Alminshid, Mohammed Nsaif Abbas

    Published 2025-09-01
    “…The results showed that the adsorption was spontaneous in the temperature range studied, that it had a negative entropy of 438 J/mol.K, and that it was exothermic with an enthalpy of 142.7 kJ/mol, which means that the adsorption is chemisorption. …”
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  3. 303

    Applicability, adsorbent chitosan@Fe2 (MoO4)3 nanocomposite for removal of textile reactive red198 dye from wastewater by Elham Pournamdari, Leila Niknam

    Published 2024-01-01
    “…The results of the thermodynamic parameter showed a negative enthalpy (- 2.92 kJ mol−1), a negative Gibbs free energy (−15.25 kJ mol−1), and negative entropy (−39.28 kJ K−1 mol−1). …”
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  4. 304

    Direct and rapid screening of four organic compound metabolites in urine by paper spray mass spectrometry by Junyu PAN, Mengmeng LIU, Qiang ZENG

    Published 2025-07-01
    “…In recent years, many biomarker assays with good specificity and high sensitivity have been developed for the detection of exposure to organic solvents, but they cannot meet the demand for real-time and fast detection.ObjectiveTo establish a paper spray mass spectrometry method for direct and rapid detection of four organic compound metabolites (toluene diamine, 2,5-hexanedione, hippuric acid, and methylhippuric acid) in the urine of occupational populations.MethodsToluene diamine and 2,5-hexanedione were analyzed using positive ion mode, while hippuric acid and methylhippuric acid were analyzed using negative ion mode. The ion transfer tube temperature was 275 °C. …”
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  5. 305

    Development of multiplex PCR system for identification of glyphosate-tolerant sugar beet by Л. М. Присяжнюк, Ю. В. Шитікова, О. О. Волчков

    Published 2016-12-01
    “…Based on the results of test multiplex reactions, concentrations of dNTPs and Mg2+ ions were determined that allowed to exclude the possibility of non-specific fragments and false-negative results. The optimum amount of matrix DNA (100–150 ng) for an efficient estimate of transgenic sugar beet plants for the presence of specific sequences was determined. …”
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  6. 306

    Influence mechanism of natural factors and human socio-economic activities on ecosystem health in arid regions of Central Asia: A case study of Fuyun area, northwest China by Xu Bi, Kailong Shi, Yongyong Fu, Wangyue Zhou, Ruoning Zhao, Haijun Bao

    Published 2025-04-01
    “…In high-elevation areas (above 2460 m), EHI showed a positive correlation with both temperature and potential evapotranspiration. Natural and human socio-economic activities significantly impacted ecosystem health in low- and medium-elevation regions, while human socio-economic activities had no significant influence in high altitude regions. (4) As a mediator, PET amplified the negative effect of temperature on EHI, weakened the positive impact of precipitation and the digital elevation model (DEM) on EHI, and strengthened the positive influence of slope on EHI. …”
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  7. 307

    Analysis of Carbon Source/Sink Driving Factors Under Climate Change in the Inner Mongolia Grassland Ecosystem Through MGWR by Ritu Wu, Zhimin Hong, Wala Du, Hong Ying, Rihan Wu, Yu Shan, Sainbuyan Bayarsaikhan, Dan Xiang

    Published 2025-05-01
    “…In addition, precipitation and temperature on the influence of NPP were significantly negative with a larger area. (3) The area with a significant positive correlation of NDVI, solar radiation, and precipitation on NEP was larger than that with a significant negative correlation, while the area with significant negative correlation of temperature was larger. …”
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  8. 308

    Enhancing styrene production: CFD analysis of a Pd-based membrane reactor to carry out ethylbenzene dehydrogenation by M. Khosravi, M. Jafari, K. Ghasemzadeh, A. Iulianelli

    Published 2025-06-01
    “…The results indicated higher reaction temperatures enhanced EB conversion but reduced styrene selectivity. …”
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  9. 309

    Anomaly classification in IIoT edge devices by Danny Alexandro Múnera-Ramírez, Diana Patricia Tobón-Vallejo, Martha Lucía Rodríguez-López

    Published 2025-03-01
    “…Data used to perform the classification comes from a Raspberry Pi 3, specifically from its CPU (e.g., temperature, load, free memory, Wi-Fi sent and received packets). …”
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  10. 310

    Thermodynamic, electrochemical and surface characterization of copper corrosion inhibition in acidic solution using rice straw extract by O. Adel, M. E. Mohamed, E. Khamis

    Published 2025-07-01
    “…The corrosion inhibition performance was evaluated using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques across a temperature range of 25–55 °C. The results demonstrated that the rice straw extract achieved an inhibition efficiency of approximately 91% at 25 °C with a concentration of 0.05 g/L and maintained a significant 69.1% efficiency at 55 °C, suggesting that the inhibition primarily occurs through physisorption of the extract molecules onto the copper surface. …”
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  11. 311

    Dechlorination of selected polychlorinated biphenyl congeners using metal-impregnated pulverized shrimp shell catalyst from waste by D.B. Aviantara, F. Suciati, G. Hadiko, N.S. Indrasti, M. Yani

    Published 2023-10-01
    “…The efficiency calculation of total polychlorinated biphenyl concentrations after treatments was approximately 25 percent. …”
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  12. 312

    Review of Pre-processing Techniques for Meteorological Satellite Data Assimilation in Numerical Prediction by Ma Gang, Huang Jing, Gong Xinya, Xi Shuang, Xue Lei, Li Juan, Zhang Peng, Gong Jiandong

    Published 2024-03-01
    “…In response to the complex format of satellite data from multiple channels, CMA has developed a standard format of high time-sensitive satellite data splicing technology in the pre-processing of satellite data assimilation, which effectively reduces the negative impact of the time lag of whole-orbit satellite data on operational numerical prediction. …”
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  13. 313

    Enhanced Cadmium Removal by Raw Argan Shell Adsorbent: Experimental and Theoretical Investigations for Ecological Applications by Fatima-Zahra Abahdou, Maria Benbouzid, Khalid Bouiti, Hamid Nasrellah, Meryem Bensemlali, Najoua Labjar, Souad El Hajjaji

    Published 2025-03-01
    “…Thermodynamic analysis indicated an endothermic adsorption process, with ΔG° shifting from positive to negative as temperature increased, confirming that adsorption is favored at higher temperatures. …”
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  14. 314
  15. 315

    A Sensor-Based Data Acquisition System for Soil Parameters to Determine Suitable Crops by Blessing Olatunde Abisoye, Eustace Manayi Dogo, Buhari Ugbede Umar, Isaac Zhiri Mamman

    Published 2023-12-01
    “…The study calibrates sensors using known pH, moisture, and temperature values for specific crops to grow in Nigeria. …”
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  16. 316

    Comprehensive Performance Analysis for the Rotating Detonation-Based Turboshaft Engine by Zifei Ji, Ruize Duan, Renshuai Zhang, Huiqiang Zhang, Bing Wang

    Published 2020-01-01
    “…The critical compressor pressure ratio corresponding to the disappearance of specific power improvement is higher than that corresponding to the disappearance of thermal efficiency and specific fuel consumption. These critical compressor pressure ratios are positively correlated with flight altitude and negatively correlated with flight velocity. …”
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  17. 317

    The siRNA Non-seed Region and Its Target Sequences Are Auxiliary Determinants of Off-Target Effects. by Piotr J Kamola, Yuko Nakano, Tomoko Takahashi, Paul A Wilson, Kumiko Ui-Tei

    Published 2015-12-01
    “…Here, we demonstrate that both the melting temperature (Tm) in a subsection of siRNA non-seed region, and the GC contents of its corresponding target sequences, are negatively correlated with the efficiency of off-target effect. …”
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  18. 318

    Electrochemical and computational investigation of Cicer arietinum extract as renewable and environmentally green corrosion inhibitor for aluminium in acidic environment by Hala. M. Hassan

    Published 2025-07-01
    “…The experiments showed that adding 150 ppm of CAE at 298 K resulted in an inhibition efficiency of approximately 91.1%. While increasing inhibitor concentration improved protection efficiency, higher temperatures reduced its effectiveness. …”
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  19. 319

    Calculation and Forecast of Glacial Feeding in River Basins by V. G. Konovalov

    Published 2023-09-01
    “…The annual vertical profiles of mean air temperature of April T4 = T4(Z), summer ones Ts = Ts(Z), and formulas for calculating Ts as a function of T4 are constructed and used for the calculations. …”
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  20. 320

    Influence of metabolites of microorganisms from permafrost on the synthesis cytokines by human peripheral blood mononuclear cells in vitro by S. S. Kolyvanova, L. F. Kalenova

    Published 2021-03-01
    “…Permafrost is a unique ecosystem characterized by consistently negative temperatures. It has been shown that microorganisms can be there in a state of hypometabolism or anabiosis during geological time. …”
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