Results 141 to 150 of about 816,445 (307)

Be productive or face decline. On the sources and determinants of output growth in Italian manufacturing firms [PDF]

open access: yes
We investigate the sources and determinants of output growth of Italian manufacturing firms. Applying stochastic frontier techniques, we decompose output growth into factor accumulation and TFP growth from 1998 to 2003.
Angelo Zago   +2 more
core  

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

open access: yesAdvanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer   +3 more
wiley   +1 more source

齿轮传递误差计算新模型

open access: yesJixie chuandong, 2008
The method of calculating transmission error is develped by introducing concept model and dynamic model. Based on the models,the relations among transmission error and manufacturing errors、deformation under load and dynamic load are investigated.
唐进元
doaj  

Beam Dynamics Studies for the HIE-ISOLDE Linac at CERN

open access: yes, 2009
The upgrade of the normal conducting (NC) Radioactive Ion Beam EXperiment (REX)-ISOLDE heavy ion accelerator at CERN, under the High Intensity and Energy (HIE)-ISOLDE framework, proposes the use of superconducting (SC) quarter-wave resonators (QWRs) to ...
Fraser, M. A.   +3 more
core  

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

RESEARCH ON FATIGUE LIFE ANALYSIS METHOD OF ADDITIVE MANUFACTURING TITANIUM ALLOY STRUCTURE BASED ON FKM STANDARD

open access: yesJixie qiangdu
Based on FKM method prepared by the Geman Mechanical Engineering Committee,the constants of TA15 titanium alloy by additive manufacturing were obtained according to the existing test data and finite element simulation calculation,and the fatigue life of ...
GAO Yan   +5 more
doaj  

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

多级行星齿轮传动静力学均载研究

open access: yesJixie chuandong, 2012
A calculation model of NGW type planetary gear transmission is established.Considering gear manufacturing and assembling errors,load coefficient of the system is computed by using the theory of equivalent mesh error and the influence of load sharing ...
赵又红   +4 more
doaj  

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Hobbing Error and Adjustment of Worm-gear Tooth Surface

open access: yesJixie chuandong, 2015
At present,there are two different kinds of worm-gear hobs in domestic: outer diameter increment hob and pitch diameter increment hob.The outer diameter increment hob has been eliminated a long time ago in the most of the developed industrial countries ...
Lu Jianwei, Chen Ningxin
doaj  

Home - About - Disclaimer - Privacy