Results 31 to 40 of about 2,257,354 (296)

Persistent currents in multicomponent Tomonaga-Luttinger liquid: application to mesoscopic semiconductor ring with spin-orbit interaction

open access: yes, 2004
We study persistent currents in semiconductor ballistic rings with spin-orbit Rashba interaction. We use as a working model the multicomponent Tomonaga-Luttinger liquid which arises due to the nonparabolic dispersion relations of electrons in the rings ...
A. V. Moroz   +14 more
core   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski   +59 more
wiley   +1 more source

Research on working principle and cross-track cutting characteristic of the axis-tilted rock-breaking tool

open access: yesAdvances in Mechanical Engineering, 2019
Concentric-track cutting method of a conventional polycrystalline diamond compact bit makes the bit suffer from inadequate rock-penetrating capacity and severely hinders the improvement of rock-breaking efficiency.
Haitao Ren   +5 more
doaj   +1 more source

Pivot Stiffness Effect on Transient Dynamic Characteristic of Tilting Pad Journal Bearing-Rotor System Passing through Critical Speed

open access: yesLubricants, 2023
Tilting pad journal bearings (TPJBs) are widely applied in the high-speed rotor system whose working speed is higher than its critical speed due to excellent hydrodynamic lubrication and stability.
Yingze Jin   +3 more
doaj   +1 more source

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware   +13 more
wiley   +1 more source

The analysis of the current shape in the circuit analogous to the a.c. welding circuit [PDF]

open access: yes, 1967
The suitability for welding of manual metal arc welding transformers depends on the no-load voltage and on the electro-magnetic behaviour of the reactor. The latter is related to the curvature of the actual magnetization characteristic.
Kuszleyko, Richard
core  

The length and depth of algebraic groups [PDF]

open access: yes, 2018
Let $G$ be a connected algebraic group. An unrefinable chain of $G$ is a chain of subgroups $G = G_0 > G_1 > \cdots > G_t = 1$, where each $G_i$ is a maximal connected subgroup of $G_{i-1}$. We introduce the notion of the length (respectively, depth) of $
Burness, Timothy C.   +2 more
core   +3 more sources

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark   +9 more
wiley   +1 more source

Study on the Working Characteristic of Overrunning Alternator Pulley of Automobile Generator

open access: yesJixie chuandong, 2020
The Overrunning Alternator Pulley (OAP) of automobile generator is more and more used because it can effectively improve the vibration of the front gear train of the automobile,thus increasing the service life of the gear train.
Yi Liu, Guoding Chen
doaj  

Study on Variable Working Condition Characteristics of 600 MW Direct Air Cooling Condenser

open access: yes发电技术, 2022
The coal consumption of direct air cooling unit is higher than that of wet cooling unit, and its back pressure is easily affected by environmental factors.
AN Liuming   +4 more
doaj   +1 more source

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