Results 111 to 120 of about 583,413 (370)

AGNI-DRILL - A COMPLEX DRILLING FLUID FOR DRILLING IN KYNOVSK MUDSTONES

open access: yesOil and Gas Studies, 2016
Oil pools developed by PJSC «Tatneft» are mainly confined to the Devonian deposits, the top of which is represented by Kynovsk argillites. The construction of a horizontal wellbore in the Upper Devonian terrigenous strata (D0) is complicated by the geological structure of this complex, which leads to complications related with maintaining aborehole ...
S. I. Golyb, R. A. Usmanov, L. B. Huzina
openaire   +3 more sources

PERCEPTIONS OF APPLIED BEHAVIOR ANALYSIS THERAPY ON CHILDREN WITH AUTISM SPECTRUM DISORDER VIA SOCIAL MEDIA [PDF]

open access: yes
The use of Applied Behavioral Analysis Therapy (ABA) on children with Autism Spectrum Disorder (ASD) is a controversial topic. Stakeholders have strong opinions, and the use of social media allows them to reach a bigger audience to share their ...
Drilling, Kaitlyn
core   +1 more source

Tool wear monitoring and hole surface quality during CFRP drilling [PDF]

open access: yes, 2014
The present investigation focuses on the evaluation of tool wear and surface integrity in the context of CFRP cutting. Series of drilling experiments were performed on CFRP plates using cemented carbide solid drills with the aim to investigate ...
M'SAOUBI, Rachid   +3 more
core   +3 more sources

Mechanical Behavior and Microstructural Changes Associated with Tensile Deformation above the Martensite Start Temperature during Quenching and Subsequent Partitioning of a Low‐Alloy 37SiB6 Steel

open access: yesAdvanced Engineering Materials, EarlyView.
A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen   +4 more
wiley   +1 more source

Interactive Data Exploration with Smart Drill-Down [PDF]

open access: yesarXiv, 2014
We present {\em smart drill-down}, an operator for interactively exploring a relational table to discover and summarize "interesting" groups of tuples. Each group of tuples is described by a {\em rule}. For instance, the rule $(a, b, \star, 1000)$ tells us that there are a thousand tuples with value $a$ in the first column and $b$ in the second column (
arxiv  

Constructing Covalent Organic Polymers through Dative B─N Bonds: Synthesis, Single Crystal Structures, and Physical Properties

open access: yesAdvanced Functional Materials, EarlyView.
Dynamic linkages are highly attractive in preparing single crystals of covalent organic polymers (COPs). Here, single crystals of two COPs CityU‐15 and CityU‐16 based on reversible B─N bonds are constructed using tetra(4‐pyridyl)tetrathiafulvalene and tetra(4‐pyridyl)porphine as monomers.
Xin Wang   +7 more
wiley   +1 more source

Application of Machine Learning to accidents detection at directional drilling [PDF]

open access: yesarXiv, 2019
We present a data-driven algorithm and mathematical model for anomaly alarming at directional drilling. The algorithm is based on machine learning. It compares the real-time drilling telemetry with one corresponding to past accidents and analyses the level of similarity.
arxiv  

Drill bit design assures clean holes in laminated materials [PDF]

open access: yes, 1965
Drill bit eliminates delamination when drilling laminated material. It cuts or shaves the material as it progresses through it. The bit acts to hold down the material during drilling to prevent tearing or ripping and produces a clean, smooth and defect ...
Tillotson, R. N.
core   +1 more source

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