Showing 3,081 - 3,100 results of 5,311 for search '30 Under 30', query time: 0.10s Refine Results
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  3. 3083

    Research on Surface Failure Law of Working Faces in Large Mining Height and Shallow Buried Coal Seam by Zhenhua Li, Yingkun Pang, Yongsheng Bao, Zhanyuan Ma

    Published 2020-01-01
    “…The results show the following: (1) there is only one thick and hard key stratum in the overburden of large mining height and near-shallow buried working face. Under the condition of presplitting roof blasting, the first weighting step is still as high as 95 m, and the periodic breaking step of roof is 20–30 m. …”
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  4. 3084

    Validity of Palmar Pallor for Diagnosis of Anemia among Children Aged 6–59 Months in North India by Arun Kumar Aggarwal, Jaya Prasad Tripathy, Deepak Sharma, Ajith Prabhu

    Published 2014-01-01
    “…Health worker diagnosed palmar pallor with sensitivity of 30.8–42.8% and specificity of 70–89%. Similar figures for doctor were 40–47% and 60–66%, respectively. …”
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  5. 3085
  6. 3086

    Inkjet-based oligonucleotide synthesis reagents: Formulation optimization and comparison of acetonitrile and propylene carbonate applications by Yu Xiao, Yongjin Peng, Zhen Rong, Xiaoyang He, Fei Sun, Shengqi Wang

    Published 2025-01-01
    “…Experimental results indicate that the PC solvent not only exhibits good inkjet stability but also significantly enhances the purity of oligonucleotide synthesis products and stepwise coupling efficiency under optimal conditions. When synthesizing a target sequence of 30 nucleotides, a stepwise coupling efficiency of 99.01 % was achieved. …”
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  7. 3087

    Learning Curves of Macintosh Laryngoscope in Nurse Anesthetist Trainees Using Cumulative Sum Method by Panthila Rujirojindakul, Edward McNeil, Rongrong Rueangchira-urai, Niranuch Siripunt

    Published 2014-01-01
    “…The mean ± SD number of orotracheal intubations per trainee was 35.5 ± 5.1 (range 30–47). Ten (90.9%) of 11 trainees crossed the 20% acceptable failure rate line. …”
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  8. 3088
  9. 3089

    Dynamic Prediction Model of Multisource Gas Emissions in a Fully Mechanized Top Coal Caving Based on the Coal Particle Size Distribution by Han Gao, Xuanping Gong, Xiaoyu Cheng, Rui Yu

    Published 2021-01-01
    “…The smaller the coal particle size, the faster the gas emission and the smaller the desorption ratio of coal at ≥20 mm within 30 min. The comprehensive emission intensity of coal mining and caving can be described by an exponential function. …”
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  10. 3090

    Impact Assessment of Orography on the Extreme Precipitation Event of July 2010 over Pakistan: A Numerical Study by Khan Muhammad Tahir, Yan Yin, Yong Wang, Zaheer A. Babar, Dong Yan

    Published 2015-01-01
    “…WRF model coupled with Morrison double moment scheme is used to assess the relative impact of topography on extreme rainfall event of 26–30 July 2010 in Pakistan. Two sensitivity tests with full topography (CTL) and reduced topography by 50% (LOW) are carried out. …”
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  11. 3091
  12. 3092

    Critical potassium concentrations for the initial cultivation of Cedrela fissilis Vell by Nonato Junior Ribeiro dos Santos, José Zilton Lopes Santos, Sulianne Idalior Paião Rosado, Tainah Manuela Benlolo Brabosa, Mylena Rêgo Panza, Marcelo Tavares Nunes, Josinaldo Lopes Araújo Rocha

    Published 2025-01-01
    “…We grew Cedrela fissilis seedlings in a nutrient solution under the effect of five concentrations of K (0, 1, 2, 5, and 8 mmol L-1) in a completely randomized design with five replications. …”
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  13. 3093

    Organic matter content in riparian areas of soil composed of woody vegetation and grass and its effects on pesticide adsorption by Terencio Rebello de Rebello, Fernando Rodrigo Bortolozo, Lucilia Maria Parron

    Published 2018-11-01
    “…Adsorption studies were conducted in soil collected in riparian vegetation areas composed of grass and trees under the influence of an agricultural area. Methods The analyses were performed in 21 shakers containing 100 g soil and a L of water previously contaminated with pesticide that were stirred for 30, 60, 120, 240, 360, 720, and 1440 min. …”
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  19. 3099

    Numerical Investigation on Time-Dependent Deformation in Roadway by Yuantian Sun, Guichen Li, Junfei Zhang, Bicheng Yao, Deyu Qian, Jiandong Huang

    Published 2021-01-01
    “…The strength of soft coal is low, and therefore the deformation increases gradually under constant stress with time, which is called rheology deformation. …”
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  20. 3100

    Development of a new method for maintainability and downtime analysis of mining machinery by M. Rezaei Dashtaki, A. Jandaghi Jafari, S. H. Hoseinie

    Published 2025-02-01
    “…The findings established a foundation for recommending a viable approach to enhance the maintenance and repair conditions of the Shovel fleet at the copper mine under consideration.…”
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