Research on Performance Analysis and Optimal Design of Bearing-rotor System of Ultra-high Speed Gearbox by Junhao Chen, Chunbo Liu, Linjie Yang, Luji Wu

“…Based on the tilting pad bearing rotor system， the influence of bearing span，shaft diameter and bearing related parameters on the critical speed of bearing-rotor system is analyzed through simulation calculation， which provides the basis for the optimal design of high-speed gearbox bearing-rotor system. …”
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Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems by Reza Alayi, Mahdi Mohkam, Hossein Monfared, Alibek Issakhov, Nima Khalilpoor

“…One of the important results is the increase in fluid temperature due to the increase in the diameter of the adsorbent tube, which increases the diameter of the fluid temperature by 60 K, in which the parameter increases the efficiency by 0.38%.…”
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FINITE ELEMENT STRESS AND STRAIN ANALYSIS OF BGA SOLDER JOINT OF BOARD LEVEL OPTICAL INTERCONNECTION MODULE UNDER TEMPERATURE AND VIBRATION COUPLED CONDITION by HUA JianWei, HUANG ChunYue, LIANG Ying, HUANG Wei, ZHANG Long

“…Based on ANSYS software established board level optical interconnect module finite element model,by means of the analysis of the model of the thermal-structure random vibration coupling,obtained the data of stress and strain under the coupling condition,analyzed the influence of the change of the shape parameters of three kinds of solder joints,the height of the solder joints,the diameter of the pad and the volume of the solder balls.The results show that the stress and strain value of the solder joint is gradually reduced from the center position to the solder joint at both ends;the maximum stress and strain point appeared in the solder joint at the corner of the array.With the increase of the solder joint height,the maximum stress and strain of the solder joint increased gradually.With the increase of the diameter of the pad and the volume of the solder ball,the maximum stress and strain decreased gradually.…”
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Effect of Mycorrhizae Inoculation and Maggot Compost on Sunflower Development on Marginal Land by Obel Obel, Meisilva Erona

“…The results of the study showed that mycorrhizal inoculation and maggot compost had an influence on the development of sunflowers such as the time of full bloom, ribbon flower diameter, tube flower diameter, number of seeds planted and weight of 100 seeds on marginal land. the higher the dose of mycorrhiza and maggot compost applied, the increase in each parameter observed in sunflower development on marginal land. …”
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Dynamics Analysis of the Integral Centrifugal Compressor High-speed Shaft Rotor by Yang Linjie, Wu Luji, Li Yufeng, Cao Zhigang, Wang Jingyuan

“…Through the measurements of increasing the rotational inertia of the impeller,decreasing the mass of the impeller and the distance of the impeller to the bearing,increasing the bearing span of the gear box,bearing shaft diameter and the bearing stiffness,the first order critical speed of the rotor can be improved. …”
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Sensitivity Analysis of Geometric Parameter of the Stress in Bottom of Flexspline of Very Short Cup-shaped and Hat-shaped Harmonic Gear by Xing Jingzhong, Zhang Ze, Chen Xiaoxia, Yao Yunpeng

“…The effects of the geometric parameters such as the ratio of length to diameter,width of the diaphragm and fillet radius on the maximum assembly stress and load stress in the bottom of the flexspline are compared and calculated. …”
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Analisi dell’anisotropia microstrutturale in materiali compositi rinforzati con fibre corte by A. Bernasconi, F. Cosmi, D. Dreossi

“…The spatial distribution of fibre within the polymeric matrix could be detected even in case of fibre characterized by a small diameter (10 micrometers average diameter). Differences in orientation distribution within a sample could be measured using the Mean Intercept Length (MIL) and the fabric tensor. …”
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Study on the Tooth Tip Sharpening of Face Gear with Circular Arc Profile by Sheng Wei, Feng Zhanrong, Wang Lixia, Zou Meng

“…A special case with a helix angle of 0° is proposed and the approximate equation of inner diameter and outer diameter of tooth tip sharpening is obtained by least squares method. …”
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Servo Model of Internal Leakage and Volume Efficiency Simulation for External Gear Pumps or Motors by Wu Kun, Wang Mingwei

“…Finally, the influence of gear width-diameter ratio on pump volume efficiency is analyzed. …”
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Achieving Synchronization in Arrays of Coupled Differential Systems with Time-Varying Couplings by Xinlei Yi, Wenlian Lu, Tianping Chen

“…Inspired by our previous paper (Lu et al. (2007-2008)), the extended Hajnal diameter is introduced and used to measure the synchronization in a general differential system. …”
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Optimal Graphs in the Enhanced Mesh Networks by Muhammad Shahzad Akhtar, Muhammad Imran, Syed Ahtsham ul Haq Bokhary

“…The degree diameter problem explores the biggest graph (in terms of number of nodes) subject to some restrictions on the valency and the diameter of the graph. …”
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Bismarckia nobilis: Bismarck Palm by Timothy K. Broschat

“…The persistent leaf bases are split, creating an attractive pattern on the 15–18-inch-diameter trunks. The dark brown male and female inflorescences are produced on separate trees, with females developing olive-brown fruit about 1.5 inches in diameter. …”
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Experimental research of technological elastic deformations of the central holes of gears by A. S. Serkov, V. V. Derkach, S. V. Mikhailenko, L. B. Serkova

“…Experimentally it was determined that at fixing by involute there is on 30,23 % less value of hole shape distortion from roundness in comparison with the scheme of fixing by external diameter. As a result, the scheme of fixing by involute with a gear of low technological rigidity is the best in terms of hole shape distortion from roundness in comparison with the scheme of fixing by external diameter. …”
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Investigation of Woody Species Structure and Regeneration Status in the Central Rift Valley, Sidama Regional State, Ethiopia by Assegid Assefa, Tamrat Bekele, Sebsebe Demissew, Tesfaye Abebe

“…In each quadrat, all tree and shrub species higher than ≥2 m in height and ≥2 cm in diameter at breast height were measured by a calibrated wooden stick and by a caliper, respectively. …”
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Evaluation of two-dimensional ultrasound fetal thymus size in correlation to infection parameters in pregnancies complicated with preterm premature rupture of membranes by Amal Kotb Abdallah, Mohamed Mohesen, Nagwan Kamal, Sahar Mahmoud Abd Elsalam, Sondos Salem, Ehab Salama, Mazen Abdel-Rasheed, Mohamed Eweis

“…Group 1 had a positive correlation between Thymus perimeter and APGAR score of the neonates (r=0.658, P=0.002), Thymus perimeter and birth weight (r=0.741, P<0.001), Thymus transverse diameter and APGAR score of the neonates (r=0.741, P<0.001), and finally Thymus transverse diameter and birth weight (r=0.734, P<0.001). …”
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Accumulation effect of soil aggregate organic carbon in mixed forest in open-pit coal mine by Xiaoping ZHANG, Mingchao LI, Yinli BI, Xin LI

“…In the 0−20 cm and 20−30 cm subsurface soils, poplar and Chinese pine mixed forests exhibited larger average mass diameter and geometric mean diameter, with the smallest fractal dimension. …”
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Deep learning detects entire multiple-size lunar craters driven by elevation data and topographic knowledge by Liyang Xiong, Yanxiang Wang, Haoyu Cao, Yingchao Ren, Sijin Li, Yang Chen, Guoan Tang

“…The experimental results show that LTKAU-Net not only improves the extraction of craters larger than 5 km in diameter but also identifies many craters less than 5 km in diameter. …”
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Numerical Investigation of Influences of Drilling Arrangements on the Mechanical Behavior and Energy Evolution of Coal Models by Tong-bin Zhao, Wei-yao Guo, Feng-hai Yu, Yun-liang Tan, Bin Huang, Shan-chao Hu

“…In addition, the drilling diameter or the number of drilling holes in one row affects the failure mode weakly, which is different from that of the number of drilling rows. …”
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Tailing and axisymmetric static laser beam shapes to steer microstructure and improve mechanical properties of autogenously laser welded AA6082 alloy by Venkat Vivek Pamarthi, Tianzhu Sun, Abhishek Das, Qamar Hayat, Alexander Griffiths, Lewis Johnson, Pasquale Franciosa

“…Two sets of beam shapes were investigated: (1) four axisymmetric core-to-ring beam shapes with varying ring diameter, and power, and (2) a tailing beam shape with a 3 mm elongated tail. …”
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Above dendromass estimation of juvenile Paulownia sp. by Tatiana Stankova, Veselka Gyuleva, Dimitar N. Dimitrov, Hristina Hristova, Ekaterina Andonova

“…Their stem biomass was modeled as a function of the breast height tree diameter and total tree height or the stem diameter alone and a set of goodness-of-fit criteria was applied to select the most adequate among the 29 tested formulations. …”
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