Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 213

Conference Videos 1

Year

2024 1

2023 10

2022 6

2021 20

2020 15

2019 16

2018 13

2017 18

2016 8

2015 20

2014 12

2013 8

2012 8

2011 9

2010 4

2009 4

2008 9

2007 11

2006 1

2005 4

open ︾

Keywords

PD-L1 7

China 3

Additive manufacturing 2

PD-1 2

urbanization 2

(dichloromethyl)-5-hydroxy-2(5H)-furanone (MX) 1

1512L insulator 1

1D materials 1

2(5H)-furanone 1

3-RPS-manipulator 1

304L austenitic stainless steel 1

316L stainless steel 1

3T3-L1 1

3T3-L1 preadipocyte 1

4-fluorophenylpyruvate 1

5-(difluoromethoxy)-2-mercapto-1H-benzimidazole (DMB) 1

-convexity 1

Bacillus coagulans 1

Aphanomyces euteiches 1

open ︾

Search scope:

排序： Display mode:

ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT NK0238

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1, doi: 10.15302/J-FASE- 2021390

Abstract: This study optimized a route for two-step synthesis of this virucide candidate via reaction of l-tryptophanwith triphosgene to produce l-tryptophan-N-carboxylic anhydride, which then reacts with n-octylamine

Keywords： antiviral plant protectant / antiviral in the greenhouse / field evaluation / l-trp-NCA / synthesis optimization

HTML PDF Collect

ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT NK0238

Wentao XU, Hao TIAN, Hongjian SONG, Yuxiu LIU, Yongqiang LI, Qingmin WANG

Frontiers of Agricultural Science and Engineering Pages 110-119 doi: 10.15302/J-FASE-2021390

Abstract: This study optimized a route for two-step synthesis of this virucide candidate via reaction of L-tryptophanwith triphosgene to produce L-tryptophan- -carboxylic anhydride, which then reacts with -octylamine

Keywords： antiviral plant protectant antiviral in the greenhouse field evaluation L-trp-NCA synthesis optimization

HTML PDF Collect

Comments on the special issue on forestry of

John L. INNES

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 4, Pages 502-503 doi: 10.15302/J-FASE-2017189

HTML PDF Collect

PD-1/PD-L1 blockade in cervical cancer: current studies and perspectives

Yumeng Wang, Guiling Li

Frontiers of Medicine 2019, Volume 13, Issue 4, Pages 438-450 doi: 10.1007/s11684-018-0674-4

Abstract: Checkpoint blockades targeting the PD-1/PD-L1 axis have achieved effective clinical responses with acceptableIn this review, we summarize recent advances in our understanding of the PD-1/PD-L1 signaling pathway, including the expression patterns of PD-1/PD-L1 and potential PD-1/PD-L1-related therapeutic strategies

Keywords： PD-1 PD-L1 immune checkpoint blockade antibody immunotherapy cervical cancer

HTML PDF Collect

Gridded usage inventories of chlordane in China

Qiang WANG, Lijuan ZHAO, Xuekun FANG, Jianhua XU, Yifan LI, Yehong SHI, Jianxin HU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1, Pages 10-18 doi: 10.1007/s11783-012-0458-z

Abstract: of the termite distribution, the data of chlordane usage rate and the annual new construction area (NCAWith the help of Geographic Information System, the usage data of this NCA were allocated to a grid system

Keywords： chlordane inventories termites China new construction area (NCA)

HTML PDF Collect

In memory of Perry L. McCarty, seminal founder of Environmental Biotechnology

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1730-0

HTML PDF Collect

Shear design of high strength concrete prestressed girders

Emad L. LABIB,Hemant B. DHONDE,Thomas T. C. HSU,Y. L. MO

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4, Pages 373-387 doi: 10.1007/s11709-014-0087-7

Abstract: Normal strength prestressed concrete I-girders are commonly used as the primary superstructure components in highway bridges. However, shear design guidelines for high strength PC girders are not available in the current structural codes. Recently, ten 7.62 m (25 feet) long girders made with high strength concrete were designed, cast, and tested at the University of Houston (UH) to study the ultimate shear strength and the shear concrete contribution ( ) as a function of concrete strength ( ). A simple semi-empirical set of equations was developed based on the test results to predict the ultimate shear strength of prestressed concrete I-girders. The UH-developed set of equations is a function of concrete strength ( ), web area ( ), shear span to effective depth ratio ( / ), and percentage of transverse steel ( ). The proposed UH-Method was found to accurately predict the ultimate shear strength of PC girders with concrete strength up to 117 MPa (17000 psi) ensuring satisfactory ductility. The UH-Method was found to be not as overly conservative as the ACI-318 (2011) code provisions, and also not to overestimate the ultimate shear strength of high strength PC girders as the AASHTO LRFD (2010) code provisions. Moreover, the proposed UH-Method was found fairly accurate and not exceedingly conservative in predicting the concrete contribution to shear for concrete strength up to 117 MPa (17000 psi).

Keywords： shear design high strength concrete prestressed girders full-scale tests

HTML PDF Collect

Deeply missing my career idol and role model ― Professor Perry L. McCarty

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1717-x

HTML PDF Collect

Urban watershed management under rapid urbanization

Pengfei DU, Haifeng JIA, Shaw L. YU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5, Pages 595-595 doi: 10.1007/s11783-012-0452-5

HTML PDF Collect

Recombinant aspartate aminotransferase-catalyzed synthesis of L-4-fluorophenylalanine

CHEN Meijuan, JIA Honghua, CHEN Yongsheng, JIANG Min, WEI Ping

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2, Pages 220-223 doi: 10.1007/s11705-008-0041-0

Abstract: L-4-Fluorophenylalanine (FPhe) was prepared from 4-fluorophenylpyruvate (FPPA) catalyzed by aspartateconditions: 37°C, pH value range of 5.0–8.0, 5.5 mass ratio of cell to FPPA, 0.6% (w/v) of Tween 80, 7.08 g/LFPPA, and 1.6 of molar ratio of L-Asp to FPPA.

Keywords： L-4-Fluorophenylalanine Asp-AT aspartate aminotransferase 4-fluorophenylpyruvate FPPA

HTML PDF Collect

Effects of different doses of cadmium on secondary metabolites and gene expression in Artemisia annua L.

Liangyun Zhou,Guang Yang,Haifeng Sun,Jinfu Tang,Jian Yang,Yizhan Wang,Thomas Avery Garran,Lanping Guo

Frontiers of Medicine 2017, Volume 11, Issue 1, Pages 137-146 doi: 10.1007/s11684-016-0486-3

Abstract: The effects of different Cd concentrations (0, 20, 60, and 120 μmol/L) on the biosynthesis of Artemisia annua L. were examined.The results showed that the application of treatment with 60 and 120 μmol/L Cd for 3 days significantlyThe concentrations of artemisinic acid, arteannuin B, and artemisinin in the 120 μmol/L Cd-treated;DBR2, ALDH1, and DXR were up-regulated in the 120 μmol/L

Keywords： Cd secondary metabolites gene expressions Artemisia annua L.

HTML PDF Collect

Reactive extraction for preparation of hydrogen peroxide under pressure

CHENG Yongxi, LI Hongtao, WANG Li, LÜ Shuxiang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3, Pages 335-340 doi: 10.1007/s11705-008-0042-z

Abstract: The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated. The integration process of oxidation of anthrahydroquinone by air and extraction of hydrogen peroxide from the organic phase with water was carried out in a sieve plate column under pressure. The conversion of anthrahydroquinone increased with increasing pressure resulting in an increase of hydrogen peroxide concentration in the aqueous phase. However, no change in extraction efficiency of hydrogen peroxide was observed. A mathematical model for gas-liquid-liquid reactive extraction was established. In the model, the effects of pressure and gas superficial velocity on reaction were considered. With increasing gas superficial velocity, the conversion of anthrahydroquinone increased, and the fraction of hydrogen peroxide extracted reached a plateau with a maximum of 72.94%. However, both the conversion of anthrahydroquinone and the fraction of hydrogen peroxide extracted decreased with increasing organic phase superficial velocity.

HTML PDF Collect

Advances in Underground Construction Help Provide Quality of Life for Modern Societies

Raymond L. Sterling

Engineering 2017, Volume 3, Issue 6, Pages 780-781 doi: 10.1016/j.eng.2017.12.006

HTML PDF Collect

Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4, Pages 494-500 doi: 10.1007/s11705-015-1527-1

Abstract: size-controlled synthesis of silver nanoparticles (Ag NPs) in aqueous solution with the assistance of L-cysteineThe size of Ag NPs decreases with the increase of L-cysteine concentration, and thus can be controlledby adjusting L-cysteine concentration.analysis shows that Ag NPs with an average size of 3 nm can be produced in the presence of 1.0 mmol/LL-cysteine, about one sixth of the size of Ag NPs obtained in the absence of L-cysteine (17 nm).

Keywords： nanoparticles silver L-cysteine size distribution synthesis

HTML PDF Collect

Quality Function Deployment Implementation in Construction: A Systematic Literature Review

Cudney,William L. Gillis

Frontiers of Engineering Management 2016, Volume 3, Issue 3, Pages 224-230 doi: 10.15302/J-FEM-2016036

Abstract: The construction of new buildings represents a significant investment. The goal of new building construction is to maximize value and minimize cost while staying on time and within budget. Translating customer requirements into engineering terms for new construction design is vital for a construction project to be successful. Quality function deployment has been successfully used in product development to capture the voice of the customer and translate it into engineering characteristics. Quality function deployment then carries these parameters into production and service to ensure the voice of the customer is being met with the final product. The house of quality, a tool within quality function deployment, can provide a means for comparison of owner’s project requirements and the proposed design, along with identifying how the design decisions impact meeting customer requirements and green building requirements. Quality function deployment can effectively link the project phases through design and construction and into operations and maintenance to ensure the owner’s project requirements are met with the final building. This research identifies and categorizes studies of quality function deployment applications in construction. The research method used is a systematic literature review from databases related to quality function deployment in the construction industry published in the periodicals through 2016. The principal findings of implementations, practices, and integrated approaches are then summarized. This article intends to propel further research of quality function deployment in the construction sector.

Keywords： construction engineering management quality function deployment systematic review