Results 51 to 60 of about 354 (233)

Rainfall Shapes the Diversity of Soil Nitrogen‐Fixing Microorganisms Worldwide

Advanced Science, EarlyView.
This study reveals the distinctive pattern and mechanism of rainfall driving the global biodiversity and biogeography of soil potential N‐fixing microorganisms, and constructs the theoretical framework. The results guide us on how to maintain ecosystem productivity under future climate changes (e.g., whether a specific region needs more N fertilizers ...
Bin Hua, Shuang Pang, Ang Li, Zonghao Hu, Honghui Wu, Shuhan Zhang, Yi Fan, Yi Wu, Wei Yang, Yachao Zhao, Yupeng Guan, Baoming Ji, Deliang Kong, Yong Zhao, Anton A. Goncharov, Anastasia Yu. Korotkevich, Rong Mao, Yang Zhang, Ximei Zhang   +18 more
wiley   +1 more source

Development of Drilling and Circulation Test System for LWD and Directional Drilling Tool

Shiyou jixie, 2016
The rotary steerable drilling technology has long been the monopoly of foreign company.The lack of the necessary domestic ground test equipment has seriously affected the technology development and industrialization process.In view of this,the drilling ...
Zhang Faming, Wang Zhiming, Wang Dong, Wang Hang, Jian Zhijun, Chen Lei   +5 more
doaj  

Pricing Dynamics in the US Hemp Market: A Vertical Price Transmission Analysis of the Hemp Value Chain

Agribusiness, EarlyView.
ABSTRACT The US hemp market is a new and nascent industry that has been devoid of research for about half a century. This study examined the effects of exogenous shock on price at each phase of the value chain—Farm (hemp biomass), and its impact on prices at other phases of the value chain—Intermediary Processor (crude cannabidiol hemp) and Final ...
Solomon Odiase, Tyler Mark, Patalee Buddhika Appuhamilage   +2 more
wiley   +1 more source

Practical calibration of design data to technical capabilities of horizontal directional drilling rig

IOP Conference Series: Materials Science and Engineering, 2018
In order to design more accurately trenchless pipeline passages, a technique has been developed for calculating the passage profile, based on specific parameters of the horizontal directional drilling rig, including the range of possible drilling angles and a list of compatible drill pipe sets.
S Yu Toropov, V S Toropov
openaire   +1 more source

Pre‐Curved Everting Robots With Embedded Steering Intelligence Fabricated by CO2 Laser Welding

Advanced Intelligent Systems, EarlyView.
Design and experimental demonstration of a laser welded growing robot for anatomically guided navigation. The robot follows an aortic arch phantom entering the branchiocephalic branch through steering by design. The figure shows the physical phantom setup, CAD defined weld geometry and full robot eversion.
Brandon Saldarriaga, Panagiotis Kalozoumis, Panagiotis Vartholomeos, Carlo Seneci, Kawal Rhode, Christos Bergeles   +5 more
wiley   +1 more source

APPLICATION OF CASING WHILE DRILLING TECHNOLOGY FOR ACCESSING HYDROCARBON PRODUCING HORIZONS

RUDN Journal of Engineering Research, 2017
Applications of the innovative casing while drilling (or drilling while casing) technology for accessing producing horizons of hydrocarbon deposits are analyzed.
V P Malyukov, M A Traore
doaj   +1 more source

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Data Fusion by a Supervised Learning Method for Orientation Estimation Using Multi-Sensor Configuration Under Conditions of Magnetic Distortion and Shock Impact

IEEE Access, 2020
Accurate subsurface sensing during directional drilling is critical in the mining and energy extraction industries. One challenge is to measure the azimuth accurately.
Huan Liu, Roman J. Shor, Simon S. Park
doaj   +1 more source

Teacher confidence and student engagement with mental health and wellbeing lessons: Learning from an iterative curriculum intervention in schools

British Educational Research Journal, EarlyView.
Abstract The mental health and wellbeing of young people has received increasing attention in both research and the wider public discourse. There has been a marked rise in mental health conditions in young people, and the burden of care is increasingly transferred onto schools and teachers.
Thomas Godfrey‐Faussett, Naomi French, Abbie Simpkin, Julian Turner, Tracey Riseborough, Natalie Coles, Ian Thompson   +6 more
wiley   +1 more source

Key Technology and Application of Recoverable Casing Drilling

Shiyou jixie, 2016
The recoverable casing drilling system components and characteristics have been introduced.The structural characteristics and performance requirements of main casing drilling system components have been analyzed,including the casing drilling rig,casing ...
Li Meng, Tang Zhongyuan, Zhang Weidong
doaj