Results 61 to 70 of about 3,284,133 (290)

Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period

Energies, 2019
The starting phase for pumps in water transportation pipelines is crucial and has significant transient characteristics which merit further study in order to evaluate the operational stability of the pumping system.
Faye Jin, Zhifeng Yao, Duanming Li, Ruofu Xiao, Fujun Wang, Chenglian He   +5 more
doaj   +1 more source

Why are very short times so long and very long times so short in elastic waves?

, 2010
In a first study of thermoelastic waves, such as on the textbook of Landau and Lifshitz, one might at first glance understand that when the given period is very short, waves are isentropic because heat conduction does not set in, while if the given ...
Parravicini, Guido, Rigamonti, Serena
core   +1 more source

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser, Alice Bizeul, Meera Chitlur, Hugo Donato, Jelena Roganovic, Julia E. Vogt, Thomas Kühne   +6 more
wiley   +1 more source

基于 《建筑隔震设计标准》 的近断层区隔震设计谱研究

Dizhen xuebao
为充分考虑近断层脉冲型地震动对隔震结构设计反应谱（以下简称隔震设计谱）的影响，选取近断层脉冲型地震动作为研究对象，基于 《建筑隔震设计标准》 （GB/T 51408—2021）中关于隔震设计谱的相关规定，开展了近断层区的隔震设计谱研究。采用小波变换的速度脉冲识别法选取了140组近断层脉冲型地震动，计算得到保证率分别为50% （平均谱）和84% （平均谱＋1倍标准差谱）的地震反应谱，并将其与隔震设计谱进行比较分析。结果显示，现行隔震设计标准建议的设计谱谱值在部分周期段上低于地震反应谱谱值 ...
Zhongfu Mai, Jiaman He, Haixu Zhang, Shangrong Zhang   +3 more
doaj   +1 more source

A Signal Period Detection Algorithm Based on Morphological Self-Complementary Top-Hat Transform and AMDF

Information, 2019
Period detection technology for weak characteristic signals is very important in the fields of speech signal processing, mechanical engineering, etc. Average magnitude difference function (AMDF) is a widely used method to extract the period of periodic ...
Zhao Han, Xiaoli Wang
doaj   +1 more source

‘Scrap Metal Hoards’ of the Later Urnfield Period in the Carpathian Basin

Documenta Praehistorica, 2022
Large ‘scrap’ metal hoards have so far been seen as a characteristic of the older Urnfield Period in the eastern Carpathian Basin. Using the hoard from Dezmir, Romania, as a starting point, this paper describes a group of hoards with chronologically and
Oliver Dietrich, Laura Dietrich, Botond Rezi   +2 more
doaj   +1 more source

The `Periodic Nulls' of Radio Pulsar J1819+1305

, 2008
We present a single-pulse study of the four-component pulsar J1819+1305, whose ``null'' pulses bunch at periodic intervals of around 57 times the rotation period.
A. Cumming, C. Bassa, Geoffrey A. E. Wright, Joanna M. Rankin, V. M. Kaspi, Z. Wang   +5 more
core   +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

Characteristic features of coptic encomia from the period of the cycles (7–8th centuries) [PDF]

Вестник Православного Свято-Тихоновского гуманитарного университета: Сериа III. Филология, 2012
The paper deals with some features of the Coptic literature of 7–8th centuries, which was one of the key periods in the history of Egypt. The author gives particular attention to the genre of encomium and examines issues that became topical due to the ...
Frangulian Liliia
doaj  

Characteristic of rainfall in the flood period in DKI Jakarta in 1996, 2002, and 2007

MATEC Web of Conferences, 2018
Spatial and temporal studies of rain characteristics were carried out in DKI Jakarta. This study aims to: assess the rain characteristic as the cause of flood in DKI Jakarta. Flood is studied from geography using a spatial approach.
Parlindungan Tambunan Mangapul
doaj   +1 more source