检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

低能乳化

日用化学工业译丛 1990年第1期 31-34页

作者： t.j.lin 李焕珍

本文介绍的低能乳化(LEE)节能效果大,而且使用目的不限于节能。作者曾连续研究LEE 20多年,在北美、南美、欧洲、亚洲各国都介绍了其原理和应用,在许多化妆品厂已实用化,比作者初期的研究应用范围更广,而且有惊人的效果,LEE的另一个大优... 详细信息

本文介绍的低能乳化(LEE)节能效果大,而且使用目的不限于节能。作者曾连续研究LEE 20多年,在北美、南美、欧洲、亚洲各国都介绍了其原理和应用,在许多化妆品厂已实用化,比作者初期的研究应用范围更广,而且有惊人的效果,LEE的另一个大优点是可提高乳化产品的效率、缩短制造时间,而且由于使用LEE可大幅度减少冷却水,有效地减轻处理废水的负担。此外,根据不同的配方,有的乳化效果好,有的稳定性好。

关键词：化妆品乳化制品乳化低能乳化

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

低能乳化的机理

日用化学品科学 1983年第3期 52-56页

作者： t.j.lin 童琍琍

一、前言低能乳化是一门将热能和机械能有选择性地应用到乳化过程的技术。低能乳化的一个典型应用是把乳化体的外相分成α相和β相两个部分,热能仅用于β相与内相形成一个乳化浓缩体,再加α相只需要极微的热能,就可以达到同时稀释和冷... 详细信息

一、前言低能乳化是一门将热能和机械能有选择性地应用到乳化过程的技术。低能乳化的一个典型应用是把乳化体的外相分成α相和β相两个部分,热能仅用于β相与内相形成一个乳化浓缩体,再加α相只需要极微的热能,就可以达到同时稀释和冷却的效果。只要使α相与β相之比尽可能

关键词：低能乳化浓缩物机械能一般方法阳离子表面活性剂日相

Channel pruning on frequency response

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2025年第1期68卷 159-170页

作者： Hang lin Yifan PENG lin BIE Chenggang YAN Xibin ZHAO Yue GAO School of Software Tsinghua University School of Automation Hangzhou Dianzi University

Network pruning has a significant role in reducing network parameters and accelerating the inference time of the network. Some existing methods prune the network based on the frequency of the data, and finally obtain a sub-network with high accuracy. However, according to our experimental analysis, different frequencies of information in the data contribute differently to the accuracy of the model, and using this information directly for pruning without making a selection will lead to incorrect results. We believe that pruning should retain the convolutional kernels in the network that process important information, while those kernels that process unimportant information should be removed. In this paper, we first investigate the meaning of each frequency band information in the spectrum and their contribution to the prediction accuracy of the network,and according to these results, we propose a new pruning method based on frequency response(PFR). Our PFR finds and removes the convolutional kernels in the network that specialize in processing unimportant information, resulting in a compact neural network model. PFR obtains significant experimental results on different datasets, for example, a 56.0% raduction of float points operations(FLOPs) on Res Net-50 and only 0.37% of top-1 accuracy degradation on the Image Net dataset.

关键词： deep learning model compression filter pruning channel pruning frequency response

同方期刊数据库

Fine-tuning the spatial allocation of phytohormones for smart canopy, smart breeding, and smart agriculture

在线全文

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年第1期68卷 309-310页

作者： tao Zhou lin Li National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University HuBei HongShan Laboratory

the dual challenges of global climate change and population growth have increased demand for higher crop yields per unit area. the innovative technology of smart agriculture aims to synergize breeding, cultivation, and production through the application of biological and informatics technologies. Historically, the “Green Revolution” introduced semidwarf varieties of certain key crops by utilizing mutations affecting gibberellin pathways, which significantly increased planting densities and yields.

关键词：

High-dense nanocrystalline W-based alloy prepared by hot isostatic pressing with uniform microstructure, ultrahigh hardness and good thermal stability

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

tungsten 2025年第1期7卷 120-136页

作者： Zao-Ming Wu lin He lin-Sen Ye Xiao-Feng Yang jia-jia Zhang Hong-Bo Lei Institute of Materials China Academy of Engineering Physics

High-density uniform microstructure nanocrystalline W-10wt.% Cr-5wt.% Y（W-10Cr-5Y） alloy with an average grain size of 85 nm and a relative density of 99.8% was successfully prepared.W-Cr-Y alloys with different amounts of second-phase particles were prepared by high-energy ball milling and hot isostatic pressing *** effects of composition design,ball milling parameters,and sintering parameters on the microstructure of W-Cr-Y alloys were studied.A feasible technology for controlling the synthesis of high-density nanocrystalline W-based alloys has been *** microstructure analysis of nanocrystalline W-10Cr-5Y alloy shows that there are two types of doping in the second phase:intergranular doping and intragranular *** "uniform distribution YOx-rich particles" effectively suppresses the grain growth of W and leads to the formation of nanocrystalline W-10Cr-5Y alloy.W-10Cr-5Y has an ultra-high hardness,with a Vickers hardness of 1312±12 kgf·***-temperature annealing treatment shows that W-10Cr-5Y has good thermal stability at 1000 and1100℃,as demonstrated by the comparison of Vickers hardness and grain size between annealed and unannealed alloys.

关键词： Hot isostatic pressing Microstructure Nanocrystalline tungsten thermal stability Vickers hardness

Late Paleozoic–Early Mesozoic tectonic evolution of the Zongwulong Shan-Qinghai Nanshan tectonic belt in the northern Qaidam continent， northern tibet

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

journal of Earth Science 2025年

作者： Yonghui Zhao Chen Wu jie Li Peter j.Haproff lin Ding State Key Laboratory of tibetan Plateau Earth System and Resources Environment (tPESRE)， Institute of tibetan Plateau Research， Chinese Academy of Sciences University of Chinese Academy of Sciences Chongqing Key Laboratory of Complex Oil and Gas Field Exploration and Development， Chongqing University of Science and technology Department of Earth and Ocean Sciences， University of North Carolina Wilmington

the Zongwulong Shan-Qinghai Nanshan tectonic belt of the northern tibet Plateau experienced a protracted tectonic history， including the openings and closures of the Proto- and Paleo-tethyan Oceans. Although the tectonic belt has been extensively studied， details regarding the tectonic processes involved in its development remain controversial. to better constrain the tectonic processes of this tectonic belt， we conducted detailed field geological mapping， zircon U-Pb geochronology， and whole-rock geochemical and Sr-Nd isotopic analyses. Our results show that intrusive rocks in the tectonic belt crystallized in ca. 292–233 Ma， perhaps in an arc/subduction setting. Geochemical and Sr-Nd isotopic data suggest that early Permian–late triassic ultramafic-intermediate intrusions were sourced from the enriched mantle， whereas intermediate-acidic rocks were sourced from mixed crust-mantle. We present the tectonic model that involves: (1) Early Devonian–early Permian intracontinental extension occurred in the northern margin of the Qaidam continent (ca. 416 Ma–292 Ma); (2) Early Permian–late triassic northward subduction of the Paleo-tethyan Ocean resulted in arc magmatism (ca. 292 Ma–233 Ma); and (3) subsequent late triassic intracontinental extension (ca. 233 Ma–215 Ma). Our results suggest that the late Paleozoic–early Mesozoic development of the Zongwulong Shan-Qinghai Nanshan was related to the opening， subduction， and slab retreat of the Paleo-tethyan Ocean， which has key implications for the tectonic evolution of the northern tibetan Plateau.

关键词：

turbulent Agglomeration of Microparticles in a Cylinder Wake Flow Using LES-DEM:Focusing on the Effect of the Reynolds Number

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

journal of thermal Science 2025年第1期34卷 34-49页

作者： WANG Shuang MU lin LI Xue XIE jun DONG Ming School of Energy and Power Engineering Dalian University of Technology School of Optical Information and Energy Engineering Wuhan Institute of Technology School of Energy and Environment Shenyang Aerospace University

turbulent agglomeration is viewed as a promising technology for enhancing fine particle removal *** better understand particle transport,agglomeration behaviors,and fluid-particle interactions,we numerically explored these phenomena under cylindrical vortex wake influence using a coupled large eddy simulation and discrete element method（LES-DEM） *** validity of the LES approach was verified by comparison with available direct numerical simulation（DNS） *** adopted the johnson-Kendall-Roberts（jKR） contact model for particle-particle *** particle dispersion and agglomeration characteristics of particles with different diameters（dp=2-20 μm） in the laminar and transition of shear layer（trSL） flow regimes were *** particles were concentrated at the vortex centers,while larger particles accumulated around the *** agglomeration efficiency exhibited an M-shaped profile spanwise（y-direction）.With increasing Reynolds number,the agglomeration efficiency and turbulence intensity *** particle agglomeration efficiency peaks at a certain Reynolds ***,at higher Reynolds numbers,reducing the residence time of particles in the flow field decreases the agglomeration efficiency.

关键词： discrete element method large eddy simulation microparticle particle agglomeration

Prussian Blue Analogue‑templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 216-261页

作者： jian‑En Zhou Yilin Li Xiaoming lin jiaye Ye Key Laboratory of theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).to distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries

维普期刊数据库

Improvement of Cold Recycled Mixture Performance Based on Improved Density test Method and RAP Characteristics

在线全文

学校读者我要写书评

暂无评论

journal of Wuhan University of technology(Materials Science) 2025年第1期40卷 79-87页

作者： HAN Zhanchuang PANG Yafeng lin Hongwei China First Highway Engineering Group Co. LtdBeijing 100024China the Key Laboratory of Road and traffic Engineering Ministry of EducationTongji UniversityShanghai 201804China Guangzhou Baiyun International Airport Co. Ltd.Guangzhou 510470China

the available test methods for optimal moisture content of cold recycled mixture(CRM)as well as its bulk specific gravity,and theoretical maximum relative density were analyzed in this *** test improvements were suggested to improve test control of the CRM road performance based on the discovered ***,the properties of reclaimed asphalt pavement(RAP),including the content of old asphalt,penetration index,passing rate of 4.75 mm sieve,and gradation change rate after extraction,were *** effects of RAP characteristics on splitting tensile strength,water stability,the high-and low-temperature performance of emulsified asphalt CRM were *** results show that the optimum moisture content of CRM should be determined when the compaction work matches the specimen’s molding *** the analyzed methods of bulk specific gravity assessment,the dry-surface and CoreLok methods provide more robust and accurate results than the wax-sealing method,while the dry-surface method is the most *** modified theoretical maximum relative density test method is proposed,which can reduce the systematic error of the vacuum test *** following RAP-CRM trends can be *** lower the content of old asphalt and the smaller the change rate of gradation,the smaller the voids and the better the water stability of *** greater the penetration of old asphalt,the higher the fracture work and low-temperature splitting *** greater the penetration,the higher the passing rate of 4.75 mm sieve after extraction,and the worse the high-temperature performance of CRM.

关键词： RAP volume parameters high-temperature performance low-temperature performance water stability

维普期刊数据库