Results 21 to 30 of about 91,053 (267)

The Effect Analysis of Carrier Gas Flow Rate on the Rapid Gas Chromatographic Separation System

open access: yesApplied Bionics and Biomechanics, 2020
Odor pollution did not only disturb the human normal life but also aroused the attention of environmental researchers and environmental protection departments.
Xu Zhang   +3 more
doaj   +1 more source

Design of an active dynamic balancing head for rotor and its balancing error analysis

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
The unbalancing vibration monitoring and control of rotating machinery is an important engineering problem. In order to correct the unbalance of rotor system online, an active dynamic balancing head is designed based on the ratchet-pawl mechanism and ...
Zhang SHIHAI, Zhang ZIMIAO
doaj   +1 more source

Local Vaporization at the Cut Front at High Laser Cutting Speeds [PDF]

open access: yesLasers in Manufacturing and Materials Processing, 2020
AbstractHigh-speed videos of the cut front and spectrometric measurements were applied to detect local vaporization on the cut front at high cutting speeds to show that with increasing feed rate, temporally short and intense flashes are generated by vaporization phenomena on the upper part of the cut front.
Oliver Bocksrocker   +5 more
openaire   +3 more sources

A general torsional stiffness estimating approach for geared transmission employed in rotary table of machine tools

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
Torsional stiffness of a rotary feed drive system not only has great influence on the rotary positioning accuracy, but also affects the system dynamic characteristics.
Lin HAN, Fujun WANG
doaj   +1 more source

Development of a Robotic Catheter Manipulation System Based on BP Neural Network PID Controller

open access: yesApplied Bionics and Biomechanics, 2020
In the process of artificial interventional therapy, the operation of artificial catheter is not accurate, which will bring strong radiation damage to surgeons.
Xu Ma, Jinpeng Zhou, Xu Zhang, Qi Zhou
doaj   +1 more source

Behavior of Cutting Heat in High Speed Cutting.

open access: yesJournal of the Japan Society for Precision Engineering, 1998
(1) 切込みや逃げ面接触長さを変化させることにより, 切屑, 被削材, 工具への切削熱の流入割合を求めることができた.(2) 切削熱の切屑への流入割合は, 切削速度の上昇とともに増加し, 被削材, 工具へは減少していく.(3) 高速切削になるにつれて, 逃げ面での摩擦による発熱は無視できなくなる.
Masatoshi HIRAO   +4 more
openaire   +2 more sources

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed   +5 more
wiley   +1 more source

Prolonged Corrected QT Interval as an Early Electrocardiographic Marker of Cyclophosphamide‐Induced Cardiotoxicity in Pediatric Hematology and Oncology Patients

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cyclophosphamide (CY) is associated with potentially fatal cardiotoxicity, yet no electrocardiographic indices have been established for early detection of CY‐induced cardiomyopathy. This study aimed to determine whether corrected QT interval (QTc) prolongation can predict early onset of CY‐related cardiac dysfunction in pediatric ...
Junpei Kawamura   +5 more
wiley   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

A method to select correcting faces of a double-face dynamic balancing rotor

open access: yesAdvances in Mechanical Engineering, 2016
Considering the sensitivity and installing position limitation, the real positions for two correcting faces must be selected first in the process of double-face dynamic balancing design and practice for rigid rotor system.
Shihai Zhang, Zimiao Zhang
doaj   +1 more source

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