Results 31 to 40 of about 915,295 (349)

Influence of corrosion rate on rust penetration in concrete

Shenzhen Daxue xuebao. Ligong ban, 2023
Rust penetration in pore structure of concrete cover happens after the reinforcement corrosion, which impedes the cracking development. To improve the accuracy of deducing the corrosion level of reinforcement from the crack width, reinforcements are ...
HONG Shuxian, ZHENG Fan, XING Feng, DONG Biqin   +3 more
doaj   +1 more source

Textural Properties Of Rock For Penetration Rate Prediction

Daffodil International University Journal of Science and Technology, 1970
Abstract: The relationship between textural properties of selected Nigeria rocks and penetration rate of top-hole hammer drill was investigated. These rock samples were tested in the laboratory for mineral composition, silica content and porosity. Also, average grain size and packing density were determined from photomicrograph of the samples using ...
Adebayo, B., Akande, J.M.
openaire   +2 more sources

Toy Models for Galaxy Formation versus Simulations [PDF]

, 2013
We describe simple useful toy models for key processes of galaxy formation in its most active phase, at z > 1, and test the approximate expressions against the typical behaviour in a suite of high-resolution hydro-cosmological simulations of massive ...
Cacciato, M., Ceverino, D., Dekel, A., Primack, J. R., Tweed, D., Zolotov, A.   +5 more
core   +1 more source

Well-seismic joint data-driven resistivity-based prediction of 3D spatial rate of penetration

Frontiers in Earth Science
Accurate rate of penetration (ROP) prediction is important for optimizing drilling parameters, selecting drilling tools, improving drilling efficiency, and reducing operation cost.
Yangfei Yu, Yangfei Yu, Shouceng Tian, Jianguo Li, Lingzhan Zou, Gang Liu, Pengfei Li, Wei Zhou, Yang Lu   +8 more
doaj   +1 more source

Drill Bit Selection in Yubei Block Based on Factor Analysis

Shiyou jixie, 2021
The drill bit used in the field has a poor matching degree with the drilled formation, resulting in slow ROP. It is necessary to supplement the selection factors based on the conventional bit selection method by considering the influence of hydraulic ...
Cheng Haoyu, Zhang Yan, Lou Yishan, Xie Jing, Liu Zhe   +4 more
doaj  

Analysis and research on the constant-rate penetration mechanism of the seabed cone penetration test system

Frontiers in Mechanical Engineering, 2023
The seabed Cone Penetration Test (CPT) system is a common method for investigating offshore soil. This paper focuses on a new subsea CPT method for assessing physical and mechanical properties of marine sediments. The new method enables automatic docking
Ziqiang Ren, Ziqiang Ren, Jiawang Chen, Jiawang Chen, Jin Guo, Jin Guo, Bijin Liu, Xiaohui Hu, Xiaohui Hu, Hang Zhou, Hang Zhou, Houhong Liu, Feng Gao, Feng Gao   +13 more
doaj   +1 more source

Patient Activation in Childhood, Adolescent, and Young Adult Cancer Survivors: Current Insights and Implications for Survivorship Care—A Systematic Review From the e‐QuoL Project

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Patient activation—encompassing knowledge, confidence, and skills in managing individual's health—is a cornerstone of person‐centered care. However, its significance among childhood, adolescent, and young adult cancer survivors (CAYACS) remains unexplored. This article examines the application of the 13‐item Patient Activation Measure (
Charlotte Demoor‐Goldschmidt, Anne Maas, Gisela Michel, Amandine Bertrand, Kristen E. T. Thornton, Martine Bellanger, Anna‐Liesa Filbert, Desiree Grabow, Monica Muraca, Katharina Roser, Sara Oberti, Jelena Roganovic, Hanne Cathrine Lie   +12 more
wiley   +1 more source

Unheard and Under‐Supported: Health‐Related Quality of Life in Children, Adolescents, and Young Adults With Sickle Cell Disease

Pediatric Blood &Cancer, EarlyView.
Abstract Background Sickle cell disease (SCD) is an autosomal recessive hemoglobinopathy affecting millions of individuals worldwide. The clinical expression and psychosocial burden of SCD vary widely across geographical, cultural, and healthcare system contexts, underscoring the need for setting‐specific approaches to assessment.
Desiré Fantasia, Giulia Reggiani, Elizabeth J. Maran, Maria Elisa Delle Fave, Ilaria Baido, Anna Chiara Frigo, Maria Paola Boaro, Raffaella Colombatti   +7 more
wiley   +1 more source

Clinical Course and Impact of Breaks in Therapy for Children With Relapsed/Refractory Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pediatric relapsed or refractory (R/R) solid tumors carry a dismal prognosis, and postrelapse patient experiences are not well described. We present postrelapse outcomes, including number of R/R events and subsequent therapy regimens.
Matthew T. McEvoy, Elizabeth L. Seashore, W. Susan Cheng, Shondra Clay, Jessica A. Casas, Jennifer H. Foster   +5 more
wiley   +1 more source

Cuttings Carrying Behavior of Coring Tools Based on Fluent⁃EDEM Coupling Model

Shiyou jixie
To improve cuttings carrying efficiency in coring operation of ultra⁃deep wells， the cuttings carrying performance of coring tools under complex conditions was studied.
Yang Liuqing, Liu Bin, Liu Bin
doaj   +3 more sources