Results 1 to 10 of about 11,712,389 (339)

Planning for 1000 Years: The Råängen Experiment

Urban Planning, 2021
While traditional forms of urban planning are oriented towards the future, the recent turn towards experimental and challenge-led urban developments is characterized by an overarching presentism. We explore in this article how an experimental approach to
Peter Pelzer, Roger Hildingsson, Alice Herrström, Johannes Stripple   +3 more
doaj   +5 more sources

Enhancing workability of high-volume calcined clay blend cement pastes through optimized addition sequences of PCE superplasticizer

Case Studies in Construction Materials
The cementitious paste containing a high volume of calcined clay exhibits poor fluidity due to the thixotropic nature of the clay suspension. The study focuses on the impact of the stepwise addition of PCE and protein-based alkaline retarder (PAR) on the
Jun Ren, Jinyi Guo, Yu Jin, Fan Liu, Birunxuan Liu, Shuo Yan, Wei Yan, Caimeng Lu, Shi Shi   +8 more
doaj   +1 more source

Tamanho ótimo de parcela para ensaios com sorgo granífero em duas épocas de semeadura Optimal plot size for experiments whit grains sorghum in two times of sowing

Ciência Rural, 2008
O planejamento experimental é de fundamental importância quando se deseja precisão e qualidade dos resultados. Neste contexto, a escolha correta do tamanho e da forma de parcela em função da cultura e do tipo de ambiente merece atenção especial.
Betânia Brum, Sidinei José Lopes, Lindolfo Storck, Valdecir José dos Santos, Vilson Benz, Cláudio Lovato   +5 more
doaj   +1 more source

Investigation on hydration characteristics and microstructure development of low-carbon cementitious material blended with calcined phosphogypsum and steel slag

Developments in the Built Environment
This research investigates the hydration characteristics, microstructure changes and mechanical properties of a low-carbon cementitious system composed of calcined phosphogypsum (CPG) and steel slag (SS).
Jun Ren, Huan Wei, Jingbo Wang, Dafu Wang, Yunqiu Xue, Miaoyuan Li, Xin Tian, Yubin Cao   +7 more
doaj   +1 more source

Selection of Rational Polishing Modes for Cladded Chrome Coatings

Механика машин, механизмов и материалов, 2020
As a result of experimental and statistical modeling, dependencies were obtained that establish the effect of polishing modes (the number of passes of the polishing wheel, the value of the wheel tightness) on the roughness and thickness of the chrome ...
Mikhail A. Levantsevich, Natalia N. Maksimchenko, Yahor V. Pilipchuk   +2 more
doaj   +1 more source

Empirical Information Metrics for Prediction Power and Experiment Planning

Information, 2011
In principle, information theory could provide useful metrics for statistical inference. In practice this is impeded by divergent assumptions: Information theory assumes the joint distribution of variables of interest is known, whereas in statistical ...
Christopher Lee
doaj   +1 more source

Planning an experiment for cleaning exhaust gases with ultrasound

Вестник СибАДИ, 2021
Introduction. The article deals with the protection of the environment from harmful components of the exhaust gases of a motor vehicle. In order to solve this problem, it is proposed to develop an additional device to the exhaust system of an internal ...
A. S. Kadyrov, B. K. Sarsembekov, A. B. Kukisheva   +2 more
doaj   +1 more source

Planning for an integrated research experiment [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2001
We describe the goals and research program leading to the Heavy Ion Integrated Research Experiment (IRE). We review the basic constraints which lead to a design and give examples of parameters and capabilities of an IRE. We also show design tradeoffs generated by the systems code IBEAM.
Barnard, J. J., Ahle, L. E., Bangerter, R. O., Bieniosek, F. M., Celata, C. M., Faltens, A., Friedman, A., Grote, D. P., Haber, I., Henestroza, E., Kishek, R. A., de Hoon, M. J. L., Karpenko, V. P., Kwan, J. W., Lee, E. P., Logan, B. G., Lund, S. M., Meier, W. R., Molvik, A. W., Sangster, T. C., Seidl, P. A., Sharp, W. M.   +21 more
openaire   +2 more sources

About evaluation of vegetation changes on permanent sample areas in Järvselja protected compartment

Metsanduslikud Uurimused, 2015
The changes in tree layer saplings, shrub, field and moss layer in Järvselja Nature Reserve virgin forest compartment (JS226) were analysed on the ground of data collected in 1955, 1985, 1993 and 2012.
Paal Jaanus, Jürisoo Kristiina, Paal Taimi   +2 more
doaj   +1 more source

Genome-Wide Identification, Expression Profiling, and Evolution of Phosphate Transporter Gene Family in Green Algae

Frontiers in Genetics, 2020
Phosphorus (P) is an essential nutrient for plant growth and development. Phosphate transporters (PHTs) are trans-membrane proteins that mediate the uptake and translocation of phosphate (Pi) in green plants. The PHT family including PHT1, PHT2, PHT3 and
Long Wang, Long Wang, Liang Xiao, Haiyan Yang, Guanglei Chen, Houqing Zeng, Hongyu Zhao, Yiyong Zhu   +7 more
doaj   +1 more source