Results 61 to 70 of about 621 (266)

Biofilm dynamic changes in drip irrigation emitter flow channels using reclaimed water

Agricultural Water Management
Reusing reclaimed water through drip irrigation offers an effective way to overcome freshwater scarcity. However, biofilm accumulation in the flow channel of drip emitters is the primary obstacle.
Changjian Ma, Mengyao Li, Peng Hou, Xuejun Wang, Zeqiang Sun, Yan Li, Yang Xiao, Yunkai Li   +7 more
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

From physical to coupled physical–chemical clogging: the role of nitrogen fertilizers in high-sediment water drip irrigation systems

Results in Engineering
High-sediment water drip irrigation (HSWDIS) provides an important approach to alleviate water shortages in arid regions, yet emitter clogging remains the primary obstacle limiting its sustainable application.
Bowen Li, Enkai Cao, Qichao Zhang, Rui Zong, Zeqiang Sun, Changjian Ma, Yang Xiao, Yan Li   +7 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Effect of fertilization on emitter clogging in drip irrigation using high sediment water: Perspective of sediment discharge capacity

Agricultural Water Management
Emitter clogging is a major issue that restricts drip irrigation technology with high-sediment loaded water. Traditional anti-clogging method using water filtration is not only costly but also consumes an excessive amount of energy. This study provided a
Peng Hou, Lu Liu, Muhammad Tahir, Yan Li, Xuejun Wang, Ning Shi, Yang Xiao, Changjian Ma, Yunkai Li   +8 more
doaj   +1 more source

Irrigação localizada subsuperfical: gotejador convencional e novo protótipo Subsurface drip irrigation: conventional dripper and new prototype

Revista Brasileira de Engenharia Agrícola e Ambiental, 2012
A irrigação por gotejamento subsuperficial, que utiliza um sistema protetor do emissor para evitar entupimento do mesmo por raiz e partículas sólida do solo, pode ser viável em relação a um sistema convencional.
Wanderley de J. Souza, Tarlei A. Botrel, Rubens D. Coelho, Nilson A. V. Nova   +3 more
doaj   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

The Clogging Rules of Ceramic Emitter in Irrigation Using Saline Water with Different EC

Agronomy, 2019
Infiltration irrigation with saline water is a more effective method than drip irrigation to alleviate water scarcity worldwide, but so far, no report has discussed the clogging rules of ceramic emitters, a major component of infiltration irrigation ...
Huifang Chen, Yanfang Liu, Junying Chen, Lin Zhang, Yaohui Cai, Haiying Chen, Shoujun Wu, Mingu Zhou   +7 more
doaj   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source