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Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

《机械工程前沿(英文)》 2016年 第11卷 第1期   页码 44-59 doi: 10.1007/s11465-015-0360-z

摘要:

During the second half of the twentieth century, Soviet scientists were among the world leaders in the theory and geometry of gearing or the theoretical fundamentals of designing gears and gear-cutting tools. The authors of the current paper review works related to the development of the theory of gearing (TG) written in Russian from the mid-1930s to the present. Overall, the review covers more than 400 publications of nearly 200 authors (among more than 1000 studied works). This review involves some works on gear strength and accuracy to attract more experts.

This paper presents a short list of works from the seventeenth century to the nineteenth century and discusses the basic concepts of the TG. This paper also includes a review of more than 160 papers in Russian for the period of 1935–1975, which is the “golden age” of the TG. The main features and achievements during this period are also considered.

The distinctive feature of this review is the use of diagrams that visually present TG experts and the dates and themes of their published works. The diagrams also show the following aspects: 1) The most popular and important themes in a specific period, 2) the most important publications on the themes of interest to readers, and 3) the direction of the works and scope of interests of every researcher.

关键词: theory of gearing (TG)     gear geometry     generating surface     gear synthesis     gear analysis    

Study on HCl removal for medical waste pyrolysis and combustion using a TG-FTIR analyzer

Hongmei ZHU,Weiying CHEN,Xuguang JIANG,Jianhua YAN,Yong CHI

《环境科学与工程前沿(英文)》 2015年 第9卷 第2期   页码 230-239 doi: 10.1007/s11783-014-0651-3

摘要: Under both pyrolysis and combustion condition, HCl removal efficiency for medical waste with Ca-based additives was semi-quantitatively studied by means of TG-FTIR. Additionally, the difference of HCl removal efficiency for PVC and medical waste was compared. Experimental results showed that: 1) Thermal degradation of medical waste mainly took place in two steps under both pyrolysis and combustion condition; 2) HCl emitted at both two steps and HCl concentration increased with the increased of Cl ratio in the medical waste; 3) for the same additive, HCl concentration decreased with the increased of additives amount, that is to say, HCl removal efficiency of medical waste increased as the increased of Ca/Cl molar ratio. Fourth, when Ca(OH) was used as additive, HCl removal efficiency for medical waste combustion was a little higher than that for medical waste pyrolysis, but either CaCO or CaO was used as additive, it was just opposite, more specifically, when CaCO was used as additive with Ca/Cl=1.3, HCl removal efficiency was 5.49% under pyrolysis condition, but that was only 4.24% under combustion condition. Fifth, under the same Ca/Cl molar ratio, HCl removal efficiency for PVC was higher than that for medical waste under both pyrolysis and combustion condition, more specifically, when Ca(OH) was used as additive with Ca/Cl=1, HCl removal efficiency was 64.51% for PVC, but that was only 27.66% for medical waste pyrolysis with 4% Cl under pyrolysis condition.

关键词: pollution     medical waste     pyrolysis     combustion     TG-FTIR     HCl removal    

Pyrolysis behaviors of oil sludge based on TG/FTIR and PY-GC/MS

Wei SONG, Jianguo LIU, Yongfeng NIE,

《环境科学与工程前沿(英文)》 2010年 第4卷 第1期   页码 59-64 doi: 10.1007/s11783-009-0152-y

摘要: Pyrolysis is an alternative technology for oil sludge treatment. Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy and Pyrolysis-Gas Chromatography/Mass Spectrometry were employed to investigate the pyrolysis process and products of oil sludge. The pyrolysis process was divided into five stages: drying and gas desorption, oil volatilization, main pyrolysis, semi-coke charring, and mineral decomposition. The main reaction temperatures ranged from 497.6 K to 753.2 K. The products were mainly composed of pairs of alkane and alkene (carbon number ranges from 1 to 27). The mechanisms consisted of random chain scission followed by end chain scission at high temperatures with volatilization occurring during the whole process. This study is useful not only for the proper design of a pyrolysis system, but also for improving the utilization of liquid oil products.

关键词: oil sludge     pyrolysis     Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy (TG-FTIR)     Pyrolysis-Gas Chromatography/Mass Spectrometry (PY-GC/MS)    

船舶动力与传动装置振动控制技术发展研究

谢溪凌,董广明 ,林枫 ,张志谊 ,闻雪友

《中国工程科学》 2022年 第24卷 第6期   页码 193-202 doi: 10.15302/J-SSCAE-2022.06.018

摘要: Magnetic bearings: Theory, design, and application to rotating machinery [R]‍.

关键词: 动力与传动装置;振动声辐射;低噪声推进;振动控制    

A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS

《农业科学与工程前沿(英文)》   页码 296-305 doi: 10.15302/J-FASE-2022479

摘要:

● Summaries on sgRNAs design.

关键词: CRISPR/Cas     Aid-TG     gene editing     sgRNA design     web server    

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

《机械工程前沿(英文)》 2013年 第8卷 第4期   页码 409-419 doi: 10.1007/s11465-013-0275-5

摘要:

Harmonic drive systems are precise and specific transmission gear systems which are beneficial in terms of the high transmission ratio and almost zero backlash. These inherent and spectacular properties result in using this mechanism in robotic and space sciences where the precision and lightwieght play an important role. This paper presents a vibration analysis of harmonic drive systems using the shell theory. Equations of vibration for the flexspline and the circular spline of the system are derived and used to find the natural frequencies for both parts and, moreover, vibration response of the system under the operating condition is calculated. Also, obtained vibration equations are utilized to study the effects of different involved parameters such as the geometry of the flexspline and its gear tooth, eccentricity, and unbalancing on the vibrational behavior of the system.

关键词: harmonic drive system     strain wave gearing mechanism     vibration analysis     natural frequencies    

TG-MS研究生物质组分与聚乙烯共热解特性

范洪刚,顾菁,王亚琢,袁浩然,何明阳,孙富安

《中国工程科学》 2018年 第20卷 第3期   页码 102-108 doi: 10.15302/J-SSCAE-2018.03.015

摘要:

为了探索生物质主要组分在与塑料共热解过程中的协同效应和小分子气体产物的变化规律,笔者采用热重-质谱联用(TG-MS)技术研究纤维素、木聚糖共热解样品的混合比例为1∶1(w/w),TG实验得到了各单组分以及混合组分的失重区间,通过对单组分TG数据的拟合得到理论值与实验值,比较得到混合组分在共热解过程中存在协同效应,可促进样品的分解。

关键词: 纤维素     木聚糖     木质素     聚乙烯     共热解    

Investigations on dehydration processes of trisodium citrate hydrates

Junyan GAO, Yanlei WANG, Hongxun HAO

《化学科学与工程前沿(英文)》 2012年 第6卷 第3期   页码 276-281 doi: 10.1007/s11705-012-1206-4

摘要: The dehydration processes of trisodium citrate (Na C H O ) hydrates were investigated using thermogravimetry (TG), differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD). It was found that the temperature of dehydration of trisodium citrate dihydrate was at 430.99 K. For trisodium citrate pentahydrate, there is a two-step dehydration process and the endothermal peaks appear at 337.23 K and 433.83 K, respectively. During the first step of dehydration process, the structure of trisodium citrate pentahydrate changed into the structure of trisodium citrate dihydrate. In addition, the kinetics of dehydration for trisoidum citrate hydrates was also investigated using TG data. According to the activation energies of dehydration calculated by Ozawa equation, it was found that the dehydration mechanisms of the two hydrates were different.

关键词: trisodium citrate     dehydration     TG/DSC     PXRD    

Research on combustion characteristics of bio-oil from sewage sludge

Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU

《化学科学与工程前沿(英文)》 2009年 第3卷 第2期   页码 161-166 doi: 10.1007/s11705-009-0057-0

摘要: Combustion characteristics of bio-oil from sewage sludge were investigated using thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. The combustion process could be divided into two weight loss stages. Light compounds volatilized and were oxidized in the first stage and the heterogeneous combustion between oxygen and heavy compounds happened in the second stage, which were confirmed by FT-IR technique. Most weight loss occurred in the first stage. The effect of heating rate was also studied and higher heating rates were found to facilitate the combustion process. The kinetic parameters of the two stages were calculated and the change of activation energy indicated higher heating rates benefited combustion.

关键词: bio-oil from sewage sludge     fast pyrolysis     combustion characteristics     TG-FT-IR     kinetic    

解读建筑理论

顾孟潮

《中国工程科学》 2007年 第9卷 第11期   页码 100-102

摘要:

从解读建筑理论的定义与概念入手,对有中国特色的建筑理论框架及建筑理论的创新等问题提出 了自己的见解。

关键词: 建筑理论     建筑理论框架     建筑理论纵横框架     建筑理论的起点和终点     建筑理论创新    

Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

《能源前沿(英文)》 2019年 第13卷 第3期   页码 522-538 doi: 10.1007/s11708-018-0562-2

摘要: It is well known that smart thermostats (STs) have become key devices in the implementation of smart homes; thus, they are considered as primary elements for the control of electrical energy consumption in households. Moreover, energy consumption is drastically affected when the end users select unsuitable STs or when they do not use the STs correctly. Furthermore, in future, Mexico will face serious electrical energy challenges that can be considerably resolved if the end users operate the STs in a correct manner. Hence, it is important to carry out an in-depth study and analysis on thermostats, by focusing on social aspects that influence the technological use and performance of the thermostats. This paper proposes the use of a signal detection theory (SDT), fuzzy detection theory (FDT), and chi-square (CS) test in order to understand the perceptions and beliefs of end users about the use of STs in Mexico. This paper extensively shows the perceptions and beliefs about the selected thermostats in Mexico. Besides, it presents an in-depth discussion on the cognitive perceptions and beliefs of end users. Moreover, it shows why the expectations of the end users about STs are not met. It also promotes the technological and social development of STs such that they are relatively more accepted in complex electrical grids such as smart grids.

关键词: thermostats     perceptions     beliefs     signal detection theory (SDT)     fuzzy signal detection theory (FSDT)     chi-square (CS) test    

知行学引论——信息 知识 智能的统一理论

钟义信

《中国工程科学》 2004年 第6卷 第6期   页码 1-8

摘要:

资源乃人类生存之源。科学技术的任务就要揭示资源的性质及其转换规律,以创造先进工具,扩展人的能力,改善人类的生存发展条件。近代科学揭示了物质和能量两类资源的性质和转换规律,创造和不断改进了人力工具和动力工具,创造了辉煌的工业时代文明:文章试图总结信息资源的性质及其转换规律,阐明信息—知识—智能的统一理论,构建知行学,为创造各种智能工具奠定理论基础。

关键词: 信息论     知识论     智能论     知行学    

An application of game theory in distributed collaborative decision making

Angran XIAO

《机械工程前沿(英文)》 2019年 第14卷 第1期   页码 85-101 doi: 10.1007/s11465-019-0523-4

摘要: In a distributed product realization environment, new paradigms and accompanying software systems are necessary to support the collaborative work of geographically dispersed engineering teams from different disciplines who have different knowledge, experience, tools and resources. To verify the concept of collaboration by separation, we propose a generic information communication medium to enable knowledge representation and exchange between engineering teams, a digital interface. Across digital interfaces, each engineering team maintains its own perspective towards the product realization problem, and each controls a subset of design variables and seeks to maximize its own payoff function subject to individual constraints. Hence, we postulate the use of principles from game theory to model the relationships between engineering teams and facilitate collaborative decision making without causing unnecessary information exchange or iteration across digital interfaces. A product design and manufacturing scenario is introduced to demonstrate the efficacy of using game theory to maintain a clean interface between design and manufacturing teams.

关键词: collaboration     distributed product realization     game theory     digital interface    

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

null

《医学前沿(英文)》 2012年 第6卷 第1期   页码 1-7 doi: 10.1007/s11684-012-0173-y

摘要:

The patterns of modern science and changes in the medical model can result in the transformation of the current state of individualized and health medicines into being the primary trend in medical development. Chinese and Western medical systems are dissimilar in terms of value orientations, thinking style, and research directions because of their different historical and cultural backgrounds. Individualized treatment in modern medicine is mainly established based on individual genome information and the differences in mononucleotide polymorphi-sms. However, such treatment method is expensive, creates an uncertain genetic marker, and leads to different result interpretations, among other problems. The Chinese constitutional theory developed in the 1970s expresses the principle behind Chinese health medicine and individual treatment and provides the corresponding methods. The Chinese constitutional theory divides the constitution of the Chinese population into nine categories based on established classification criteria. It promotes the study of the relationship of each constitution to diseases and Chinese medicine preparation toward adjusting the constitution and preventing diseases. The theory also provides methods and tools for individualized treatment. Constitution identification shows the direction and provides the core technology for the evaluation of the health status. By combining the developments in modern biotechnology, new diagnostic techniques and treatment models of constitution-differentiation, disease-differentiation, and syndrome-differentiation can be established for the development of individualized Chinese medicine treatment and health medicine for the international medical community.

关键词: individualized medicine     health medicine     constitutional theory in Chinese medicine    

Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy

Yiling Wu

《医学前沿(英文)》 2011年 第5卷 第2期   页码 118-122 doi: 10.1007/s11684-011-0140-z

摘要: According to the self-discipline of traditional Chinese medicine, vessel-collateral theory was constructed systematically, which was important to improving prevention and treatment level of vasculopathy. The hypothesis of “homeostasis ( ), compensatory auto-adaptation ( ), regulation ( ) and equilibrium ( )” based on the “qi–yin-yang–five elements” coupled with the (nutrients)- (defense) theory, has become the core content of the vessel-collateral theory. Clinical and laboratory trials have been developed to further confirm the scientific connotations of the hypothesis, such as capsule, as the representative drugs of vessel collateral theory, showed good efficacy in protecting the vascular endothelium, stabilizing the vulnerable plaque and reducing the blood vessel spasm. “Sou, ti, shu, tong” was the characteristics of capsule in treating “microvascular damage” as the core mechanism of acute myocardial infarction, cerebral infarction and microvascular complications of diabetes. capsules in the treatment of arrhythmia have made integrated adjustment advantage. capsules have been made treating both manifestation and root cause of chronic heart failure. These research have improved prevention and treatment level of major vascular system diseases.

关键词: vessel-collateral theory     vasculopathy     prevention and treatment    

标题 作者 时间 类型 操作

Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

期刊论文

Study on HCl removal for medical waste pyrolysis and combustion using a TG-FTIR analyzer

Hongmei ZHU,Weiying CHEN,Xuguang JIANG,Jianhua YAN,Yong CHI

期刊论文

Pyrolysis behaviors of oil sludge based on TG/FTIR and PY-GC/MS

Wei SONG, Jianguo LIU, Yongfeng NIE,

期刊论文

船舶动力与传动装置振动控制技术发展研究

谢溪凌,董广明 ,林枫 ,张志谊 ,闻雪友

期刊论文

A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS

期刊论文

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

期刊论文

TG-MS研究生物质组分与聚乙烯共热解特性

范洪刚,顾菁,王亚琢,袁浩然,何明阳,孙富安

期刊论文

Investigations on dehydration processes of trisodium citrate hydrates

Junyan GAO, Yanlei WANG, Hongxun HAO

期刊论文

Research on combustion characteristics of bio-oil from sewage sludge

Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU

期刊论文

解读建筑理论

顾孟潮

期刊论文

Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

期刊论文

知行学引论——信息 知识 智能的统一理论

钟义信

期刊论文

An application of game theory in distributed collaborative decision making

Angran XIAO

期刊论文

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

null

期刊论文

Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy

Yiling Wu

期刊论文