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Developing the QSPR model for predicting the storage lipid/water distribution coefficient of organic compounds

Miao Li, Jian Li, Yuchen Lu, Cenyang Han, Xiaoxuan Wei, Guangcai Ma, Haiying Yu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1316-z

Abstract: . • Hydrophobic and electrostatic interactions and molecular size dominate log Klip/w. • The model canbe used in a wide application domain to predict log Klip/w values.The storage lipid/water distribution coefficient (log Klip/w) of organic chemicals, which quantitativelyof small organic compounds was constructed based on 305 experimental log Klip/w values.Klip/w values.

Keywords： Storage lipid/water distribution coefficient     log Klip/w     Organic compounds     QSPR     Quantum    

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A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Strategic Study of CAE 2011, Volume 13, Issue 12,   Pages 63-67

Abstract:

In thermally stratified reservoir, a multi-level intake structure is usually adopted in hydropower station to reduce the negative effect of releasing lower-temperature water to the environment in downstream reach. And a simple and practical formula of water temperature released is need. In this paper, based on Nuozhadu Hydropower Station, a model test is conducted to model the thermal stratification of this reservoir, and measure the temperature of water released from the intake structure. A prediction formula of water temperature released is put forward based on the experimental data. The formula is validated by the experimental results of water temperature released from the intakes of Jinping No.1 Hydropower Station.

Keywords： thermally stratified reservoir     hydropower station intake     stop-log gate     formula of water temperature    

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Thoughts on Design for Intelligent Manufacturing

David W. Rosen

Engineering 2019, Volume 5, Issue 4,   Pages 609-614 doi: 10.1016/j.eng.2019.07.011

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Liver surgery and transplantation in China: Progress and Challenges

LAU W Y, LAI E C H

Frontiers of Medicine 2007, Volume 1, Issue 1,   Pages 1-5 doi: 10.1007/s11684-007-0001-y

Abstract: From the limited but available information, we traced the history of developments of liver surgery and transplantation in China. Liver surgery first started in the late 1950s in China, and it soon flourished mainly because of the great demand in liver surgery and the emergence of a number of giants in liver surgery. We recognized and honoured the important contributions of these Chinese pioneers in portal hypertension, recurrent pyogenic cholangitis, hepatocellular carcinoma and liver transplantation.

Keywords： transplantation     pyogenic cholangitis     available information     important     hypertension    

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Ground movements due to deep excavations in Shanghai: Design charts

VARDANEGA,Charles W. W. NG,Xianfeng MA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 201-236 doi: 10.1007/s11709-014-0253-y

Abstract: Recent research has clarified the sequence of ground deformation mechanisms that manifest themselves when excavations are made in soft ground. Furthermore, a new framework to describe the deformability of clays in the working stress range has been devised using a large database of previously published soil tests. This paper aims to capitalize on these advances, by analyzing an expanded database of ground movements associated with braced excavations in Shanghai. It is shown that conventional design charts fail to take account either of the characteristics of soil deformability or the relevant deformation mechanisms, and therefore introduce significant scatter. A new method of presentation is found which provides a set of design charts that clarify the influence of soil deformability, wall stiffness, and the geometry of the excavation in relation to the depth of soft ground.

Keywords： Shanghai     excavations     mobilizable strength design     dimensionless groups     design charts    

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Robotized machining of big work pieces: Localization of supporting heads

Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 357-369 doi: 10.1007/s11465-010-0103-0

Abstract: A planner for a self adaptable and reconfigurable fixture system is proposed. The system is composed of mobile support agents that support thin sheet metal parts to minimize part dimensional deformation during drilling and milling operations. Compliant sheet metal parts are widely used in various manufacturing processes including automotive and aerospace industries. The main role of the planner is to generate an admissible plan of relocation of the mobile agents. It has to find the admissible locations for the supporting heads that provide continuous support in close proximity to the tool and trajectories of the mobile bases characterized by very high speeds during the relocation phases.

Keywords： fixture     robot     milling     drilling    

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A small-scale silica gel-water adsorption system for domestic air conditioning and water heating by the recovery of solar energy

W. PAN, L. W. WANG

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 328-336 doi: 10.1007/s11708-019-0623-1

Abstract: temperature of 35°C, the obtained maximum COP , COP , and SCP of the system are 0.59, 1.39, and 184.5 W/

Keywords： silica gel-water     heat and mass recovery     solar energy     domestic cooling and heating    

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Barriers to advancing nanotechnology to better improve and translate nanomedicines

Yuwei WANG,David W. Grainger

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 265-275 doi: 10.1007/s11705-014-1442-x

Abstract: Engineered nanomaterials and nanotechnologies promise many benefits to enhance both and performance. This is now manifest in the increasing number of reported biomedical products under development and testing that contain nanotechnologies as their distinguishing performance—enhancing components. In many cases, nano-sized materials are selected to provide a specific functional aspect that contributes to improved medical performance, either or . Nanoparticles are most commonly exploited in diverse roles in topical lotions and creams, solubilization aids, for and diagnostic and targeting agents in nanomedicines and theranostics. Despite fundamental scientific excitement and many claims to nanotechnology-based improvements in new biomedical applications, several fundamental and long-standing challenges remain to be addressed using nanomedicines to make clinically important progress. This review addresses several issues that must be fairly and objectively reported and then overcome to provide truly credible performance for nanomedicines.

Keywords： nanotechnology     nanomedicine     drug delivery     therapeutic     target delivery    

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Study on the hydrorefining of heavy oil from biomass alcoholysis in the presence of V-W-Mo-Cu catalyst

Zou Xianwu,Qin Tefu,Li Gaiyun and Huang Luohua

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 69-73

Abstract: Therefore，the hydrorefining of heavy oil was studied in the presence of V-W-Mo-Cu catalyst in this paper.The

Keywords： biomass     alcoholysis     heavy oil     hydrogenation     V-W-Mo-Cu catalyst     image processing    

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Evolving perspectives on biofuels in the United States

DIRKS, Gary W. DIRKS, Jianguo WU

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 379-393 doi: 10.1007/s11708-012-0213-y

Abstract: Biofuels represent an important source of renewable energy and may play a crucial role in developing sustainable energy strategies for many countries and the world as a whole. The pros and cons of biofuels, however, have been debated both scientifically and politically. They remain a topic of controversy. In this paper, the evolvement of the perspectives and policies on biofuels in the United States in the past several decades was reviewed. Four different periods, that is, the period prior to 1978 (marked by the passage of the Energy Act in 1978); 1978–1989 (ending with the passage of the Clean Air Act Amendments of 1990); 1990–2004 (ending with the passage of the energy act of 2005); and 2005 to the present, which were characterized by defining events of major policy importance were identified. Each time period was assessed using the Ostrom institutional analysis and development (IAD) framework to show the impact of the evolving interests and influences of global players on policy choices related to biofuels in the United States. The US has a long history of supporting corn-based ethanol and more recently advanced biofuels. Changes in perspectives on biofuels from largely unrelated groups led to changes in policy and market dynamics. Until the late 1990s, most perspectives and policies tended to be aligned and significantly supportive of corn-based ethanol in the United States. In the early 2000s, it became clear that the complications associated with first generation biofuels and corn-based ethanol in particular, were too numerous and too severe to overlook. The need for better options has spurred interest in new technologies and more environmentally benign feedstocks, but, there is little prospect for biofuels playing a significant role in the near term without greater alignment among key players.

Keywords： renewable energy     biofuels     energy sustainability    

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Erratum to: Industrial water treatment and industrial marine outfalls: Achieving the right balance

Adrian W. K. Law, Chunyan Tang

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 290-290 doi: 10.1007/s11705-017-1639-x

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MyWAL: performance optimization by removing redundant input/output stack in key-value store Research Article

Xiao ZHANG, Mengyu LI, Michael NGULUBE, Yonghao CHEN, Yiping ZHAO,zhangxiao@nwpu.edu.cn,limy@mail.nwpu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 980-993 doi: 10.1631/FITEE.2200496

Abstract: Based on a , the key-value (KV) storage system can provide high reading performance and optimize random writing performance. It is widely used in modern data storage systems like e-commerce, online analytics, and real-time communication. An LSM tree stores new KV data in the memory and flushes to disk in batches. To prevent data loss in memory if there is an unexpected crash, RocksDB appends updating data in the before updating the memory. However, synchronous WAL significantly reduces writing performance. In this paper, we present a new WAL mechanism named MyWAL. It directly manages raw devices (or partitions) instead of saving data on a traditional file system. These can avoid useless metadata updating and write data sequentially on disks. Experimental results show that MyWAL can significantly improve the data writing performance of RocksDB compared to the traditional WAL for small KV data on solid-state disks (SSDs), as much as five to eight times faster. On non-volatile memory express soild-state drives (NVMe SSDs) and , MyWAL can improve data writing performance by 10%‍–‍30%. Furthermore, the results of YCSB (Yahoo! Cloud Serving Benchmark) show that the latency decreased by 50% compared with SpanDB.

Keywords： Key-value (KV) store     Log-structured merge (LSM) tree     Non-volatile memory (NVM)     Non-volatile memoryexpress soild-state drive (NVMe SSD)     Write-ahead log (WAL)    

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SH-Mode Seismic-Reflection Imaging of Earthfill Dams Article

Edward W. Woolery

Engineering 2018, Volume 4, Issue 5,   Pages 694-701 doi: 10.1016/j.eng.2018.08.009

Abstract:

Assessing subsurface characteristics and imaging geologic features (e.g., faults, cavities, low-velocity layers, etc.) are typical problems in near-surface geophysics. These questions often have adverse geotechnical engineering implications, and can be especially acute when associated with high-hazard structures such as large earthen flood-control dams. Dam-related issues are becoming more frequent in the United States, because a large part of this major infrastructure was designed and constructed in the early- to mid-twentieth century; these dams are thus passing into the latter stages of their design life, where minute flaws that were overlooked or thought to be insignificant in design/construction are now proving problematic. The high-hydraulic heads associated with these structures can quicken degradation of weak areas and compromise long-term integrity. Addressing dam-related problems solely with traditional invasive drilling techniques is often inadequate (i.e., lack of lateral resolution) and/or economically exorbitant at this scale. However, strategic geotechnical drilling integrated with the broad utility of near-surface geophysics, particularly the horizontally polarized shear-wave (SH-mode) seismic-reflection technique for imaging the internal structural detail and geological foundation conditions of earthfill embankment dams can cost-effectively improve the overall subsurface definition needed for remedial engineering. Demonstrative evidence for this supposition is provided in the form of SH-wave seismic-reflection imaging of in situ and engineered as-built components of flood-control embankment dams at two example sites in the central United States.

Keywords： Geophysics     Seismic reflection     Shear-wave     Near-surface     Dam safety    

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Assessing the Effect of Global Travel and Contact Restrictions on Mitigating the COVID-19 Pandemic Article

Shengjie Lai, Nick W. Ruktanonchai, Alessandra Carioli, Corrine W. Ruktanonchai, Jessica R.

Engineering 2021, Volume 7, Issue 7,   Pages 914-923 doi: 10.1016/j.eng.2021.03.017

Abstract:

Travel restrictions and physical distancing have been implemented across the world to mitigate the coronavirus disease 2019 (COVID-19) pandemic, but studies are needed to understand their effectiveness across regions and time. Based on the population mobility metrics derived from mobile phone geolocation data across 135 countries or territories during the first wave of the pandemic in 2020, we built a metapopulation epidemiological model to measure the effect of travel and contact restrictions on containing COVID-19 outbreaks across regions. We found that if these interventions had not been deployed, the cumulative number of cases could have shown a 97-fold (interquartile range 79–116) increase, as of May 31, 2020. However, their effectiveness depended upon the timing, duration, and intensity of the interventions, with variations in case severity seen across populations, regions, and seasons. Additionally, before effective vaccines are widely available and herd immunity is achieved, our results emphasize that a certain degree of physical distancing at the relaxation of the intervention stage will likely be needed to avoid rapid resurgences and subsequent lockdowns.

Keywords： COVID-19     Pandemic     Population mobility     Travel restriction     Physical distancing    

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Industrial water treatment and industrial marine outfalls: Achieving the right balance

Adrian W. K. Law,Chunyan Tang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 472-479 doi: 10.1007/s11705-016-1592-0

Abstract: Industrial water treatment and industrial marine outfalls both function together to reduce the pollutant concentrations in the effluent and mitigate the potential impact on the environment. The former uses environmental treatment technology with energy and material cost considerations, while the latter utilizes the natural assimilation potential of the coastal water environment achievable at the outfall location. Because of their synergistic nature, marine outfalls are now commonly used for the disposal of partially treated domestic and industrial effluents in many coastal cities around the world, with many successful examples of low and acceptable risks to the environment. The objective of this paper is to review their balance from both environmental and economic considerations. We also discuss the end-of-the-pipe and mixing zone approaches for industrial effluents, and give some recommendations particularly for developing countries. Finally, we emphasize that a compulsory and vigorous monitoring program is essential regardless of how the balance is achieved.

Keywords： industrial effluent treatment     industrial marine outfalls     economic and environmental considerations    

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Title Author Date Type Operation

Developing the QSPR model for predicting the storage lipid/water distribution coefficient of organic compounds

Miao Li, Jian Li, Yuchen Lu, Cenyang Han, Xiaoxuan Wei, Guangcai Ma, Haiying Yu

Journal Article

A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Journal Article

Thoughts on Design for Intelligent Manufacturing

David W. Rosen

Journal Article

Liver surgery and transplantation in China: Progress and Challenges

LAU W Y, LAI E C H

Journal Article

Ground movements due to deep excavations in Shanghai: Design charts

VARDANEGA,Charles W. W. NG,Xianfeng MA

Journal Article

Robotized machining of big work pieces: Localization of supporting heads

Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK

Journal Article

A small-scale silica gel-water adsorption system for domestic air conditioning and water heating by the recovery of solar energy

W. PAN, L. W. WANG

Journal Article

Barriers to advancing nanotechnology to better improve and translate nanomedicines

Yuwei WANG,David W. Grainger

Journal Article

Study on the hydrorefining of heavy oil from biomass alcoholysis in the presence of V-W-Mo-Cu catalyst

Zou Xianwu,Qin Tefu,Li Gaiyun and Huang Luohua

Journal Article

Evolving perspectives on biofuels in the United States

DIRKS, Gary W. DIRKS, Jianguo WU

Journal Article

Erratum to: Industrial water treatment and industrial marine outfalls: Achieving the right balance

Adrian W. K. Law, Chunyan Tang

Journal Article

MyWAL: performance optimization by removing redundant input/output stack in key-value store

Xiao ZHANG, Mengyu LI, Michael NGULUBE, Yonghao CHEN, Yiping ZHAO,zhangxiao@nwpu.edu.cn,limy@mail.nwpu.edu.cn

Journal Article

SH-Mode Seismic-Reflection Imaging of Earthfill Dams

Edward W. Woolery

Journal Article

Assessing the Effect of Global Travel and Contact Restrictions on Mitigating the COVID-19 Pandemic

Shengjie Lai, Nick W. Ruktanonchai, Alessandra Carioli, Corrine W. Ruktanonchai, Jessica R.

Journal Article

Industrial water treatment and industrial marine outfalls: Achieving the right balance

Adrian W. K. Law,Chunyan Tang

Journal Article