Results 31 to 40 of about 55,047 (246)

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd, Melissa Taylor, Helen Fulbright, Bob Phillips   +3 more
wiley   +1 more source

Design of a Load-Adaptive Transmitter Module for Micro-Resistivity Scanning Imaging Logging Tool

Cejing jishu
To address the insufficient adaptability of the transmitter module of the micro-resistivity scanning imaging logging tool under different well conditions, especially the insufficient emission current in high-resistivity drilling fluid environments which ...
LI Yuqi, SHI Juncheng, SHI Chao, YANG Jupeng, GUO Yingcai, XIAO Hong, MA Xueqing, BAI Tao   +7 more
doaj   +1 more source

Design and Application of Type 20 Quick Assembly Setting Tool

Cejing jishu, 2023
Plug setting tool is one of the key tools for plug and perforating operation in unconventional oil and gas reservoirs such as shale gas and tight sand gas. With the development of multistage fracturing volume stimulation techniques for unconventional oil
LU Yinghui, TANG Kai, LI Benchi, REN Guohui, NIE Jingwen, NIE Huafu   +5 more
doaj   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Effect Evaluation and Research of Bidirectional Shock Absorber Based on Measured Frequency of Downhole Perforation Detonation Wave

Cejing jishu, 2023
In the combined operation of tubing conveyed perforation (TCP) and drill stem test (DST), the perforator generates strong shock and vibration waves during perforation, which propagate around the explosion point through the connection link of the pipe ...
LI Benchi, TANG Kai, LU Yinghui, LUO Miaozhuang, CHEN Huabin, HUANG Renguo   +5 more
doaj   +1 more source

The matrix equation \(\log (XY)=\log (X)+\log (Y)\)

Linear Algebra and its Applications, 2010
Let \(X,Y\) be \(n\times n\) complex matrices such that \(X,Y,XY\) have no eigenvalues on \(\mathbb R^-\) and \(\log (XY)=\log (X)+\log (Y)\). The authors prove that if \(n=2\), or if \(n\geqslant 3\) and \(X,Y\) are simultaneously triangularizable, then \(X,Y\) commute. In both cases the problem is reduced to a result in complex analysis.
openaire   +2 more sources

Improved Outcomes for Older Children, Adolescents, and Young Adults With Neuroblastoma in the Post‐Immunotherapy Era: An Updated Report From the International Neuroblastoma Risk Group

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell, Kavitha Srivatsa, Paola Angelini, Pei‐Chi Kao, Brady Payne, Arlene Naranjo, Sveva Castelli, Miho Kato, Miki Ohira, Ulriche Pöetschger, Yaël Mossé, Lucas Moreno, Meredith S. Irwin, Ramya Ramanujachar, Wendy B. London   +14 more
wiley   +1 more source

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

FEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer, Matheus Felipe Santos, Maurício Mazzine Filho, Gabriela Oliveira Castro, Agustín Hernández, Manoel Aparecido Peres, Alejandro Miguel Katzin, Marcell Crispim   +7 more
wiley   +1 more source

Full-Scale Numerical Simulation for Cross-Dipole Acoustic Logging Transducer

Cejing jishu
The cross-dipole acoustic logging transducer is a key component of multipole acoustic logging tools. Its frequency response and directive property directly affect the quality of dipole acoustic logging data and the accuracy of formation evaluation.
SHI Peng, CHEN Wenhui, LIU Fuhuo, QIANG Sheng, YANG Fan, ZHANG Yongchao   +5 more
doaj   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source