Results 141 to 150 of about 447,007 (315)

Mechanism research on eliminating voids in bearing steel ball by floating-pressure method (FPM)

Metalurgija, 2018
To eliminate internal void and improve the mechanical properties of steel balls formed by skew rolling, the floatingpressure method (FPM) using high-pressure gas to compact void is applied in this paper.
D. Y. Tian, X. D. Shu, C. Xu
doaj  

An Investigation of the Relationship Between Central Bank Unconventional Monetary Policy and Bitcoin Activity

International Journal of Finance &Economics, EarlyView.
ABSTRACT This article investigates whether the unconventional monetary policy (UMP) measures pursued by the Federal Reserve, the Bank of England, the Bank of Japan, and the European Central Bank since the Global Financial Crisis (GFC) are associated with an appetite for cryptocurrency.
Niamh Wylie, Martha O'Hagan‐Luff
wiley   +1 more source

Research on the influence of rolling element geometry on the wear resistance of drilling equipment bearings

Проблеми трибології
The article presents the results of experimental studies of the influence of the geometric parameters of rollers and raceways on the resistance of roller bearings to rolling element rotation and jamming.
O.M. Makovkin, O.V. Dykha, I.K. Valchuk, T. Kalaczynski   +3 more
doaj   +1 more source

Guidelines for replacement of a balloon gastrostomy tube in infants and pediatric patients: The American Society for Parenteral and Enteral Nutrition

Journal of Parenteral and Enteral Nutrition, EarlyView.
Abstract Background Balloon gastrostomy tube (BGT) placements are increasing due to their ability to facilitate care of medically complex children. Management for routine and nonroutine tube replacement, including verification of proper replacement, lacks standardization, varying widely among different institutions and settings.
Beth Lyman, Loren Berman, Kathleen Carr, Cailin Frank, Peggi Guenter, Rachel Kassel, Janet Kimble, Carol McGinnis, Silvana Oppedisano, Elizabeth A. Paton, Gina Rempel, Derek S. Wakeman, David D. Church, Jacob T. Mey, Sarah Peterson, Liam McKeever   +15 more
wiley   +1 more source

What Constitutes a Good Model? An Analysis of Models for Mortgage Backed Securities [PDF]

The U.S. agency mortgage backed securities (MBS) market is deep and highly liquid, yet modeling MBS is extremely challenging. This paper applies market participants' desired requirements for a good pricing model to MBS pricing models provided by six of ...
Liuren Wu, Massoud Heidari
core  

Mechanism of Internal Fracture in Skew Rolling

Journal of the Japan Society for Technology of Plasticity, 2019
Koji YAMANE, Kazuhiro SHIMODA, Koichi KURODA   +2 more
openaire   +2 more sources

Surveying immune and inflammatory alterations in periodontitis among individuals with Down syndrome: A preliminary cross‐sectional study

Journal of Periodontology, EarlyView.
Abstract Background Individuals with Down syndrome (DS) are particularly vulnerable to early‐onset and rapidly progressing periodontitis, yet the local immune‐inflammatory alterations that contribute to this susceptibility are not fully understood. This study aimed to characterize cytokine profiles in gingival crevicular fluid (GCF) from individuals ...
Leticia Helena Theodoro, João Victor Soares Rodrigues, Marta A. A. Nuernberg, Pedro Henrique Petrilli, Mabelle de Freitas Monteiro, Valdir Gouveia Garcia, Rafael Scaf de Molon, Renato Correa Viana Casarin   +7 more
wiley   +1 more source

Firm Heterogeneity and Credit Risk Diversification [PDF]

This paper considers a simple model of credit risk and derives the limit distribution of losses under different assumptions regarding the structure of systematic and idiosyncratic risks and the nature of firm heterogeneity.
M. Hashem Pesaran, Samuel Hanson, Til Schuermann   +2 more
core  

Missense Variants in the A Isoform of FGF13 as a Novel Cause of Paroxysmal Dyskinesia

Movement Disorders, EarlyView.
Abstract Background Pathogenic variants within the unique N‐terminal inactivation particle of FGF13 isoform A (FGF13A) have so far been associated only with an X‐linked dominant epileptic encephalopathy (DEE). Objective The aim was to expand the clinical and molecular spectrum of FGF13A‐related disorder.
Cyril Mignot, Matthildi Athina Papathanasiou Terzi, Claudia Ravelli, Elisabeth Bosch, Xueqin Lin, Adeline Trauffler, Roseline Caumes, Andrew E. Fry, Clementine Fort, Gaelle Gauthe, Regina Trollmann, Thomas Wirth, Mathieu Anheim, Aurélie Méneret, Emmanuel Roze, Jean‐Madeleine de Sainte Agathe, Hailan He, Eleni Panagiotakaki, Gaëtan Lesca, André Reis, Diane Doummar, Thomas Smol, Georgia Vasileiou   +22 more
wiley   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source