Results 131 to 140 of about 1,642,785 (302)
Study on Near-bit Measuring Instrument Based on Electric Signal Transmitting Data
Shiyou jixie, 2017 Near-bit-oriented instruments commonly used in the field are basically transmitting data with electromagnetic wave,ultrasonic wave or wire,which is difficult to cooperate with other mud motor,inconvenient to maintain and the service cost is high.To ...
Duan Yongxian +4 more
doaj
Structural Concrete, EarlyView.Abstract This study evaluates the seismic performance of elevated reinforced concrete (RC) water tanks in the Elbistan region following the February 6, 2023 Kahramanmaras–Elbistan earthquakes. Field investigations, visual damage surveys, non‐destructive testing (ultrasonic pulse velocity—UPV), concrete compressive strength measurements, peak ground ...
Mustafa Eken
wiley +1 more source
Frequency dependence of acoustic waves in marine sediments [PDF]
, 2002 In situ techniques provide the most reliable method of examining the geoacoustical properties of marine sediments. In the past, individual in situ surveys have only been able to examine compressional waves over a maximum frequency range of 100 Hz to 50 ...
Robb, G. +7 more
core
Study on the Measurement of Downhole Information on the Basis of Monitoring the Mud Pressure Pulse
DEStech Transactions on Engineering and Technology Research, 2017 Grasping the real-time and accurate downhole information is an important step for realizing optimized drilling, which is also the direction of many drilling companies. Because there are many types of signals with different amplitudes and frequencies that change all the time, in the meantime the signals are generated from sources far away from the ...
openaire +2 more sources
Environmentally Realistic Metal Mixture Concentration Impacts Early Development in Zebrafish Larvae
Environmental Toxicology, EarlyView.ABSTRACT The dispersion of metals in the environment leads to the presence of metal mixtures in impacted ecosystems, but few studies have addressed their impact on early developmental processes in fish. Here, we investigated the effect of metal mixtures reported in the Doce River basin in Brazil, including Fe, Mn, and Cd, either singly or as a mixture ...
Anderson K. S. Macêdo +4 more
wiley +1 more source
Channel Characteristics and Receiver Performance Analysis of Mud Pulse Telemetry System
, 2019 Improving the data rate has been a major challenge in mud pulse telemetry. One of the reasons for the confinement in lower data rate is due to the lack of knowledge of the mud communication channel. Furthermore, the mud property, drill string geometry, interferers from the mud pumps and noise affect the pressure wave propagation. This thesis provides a
openaire +2 more sources
Recent progress on the development of hydrogel‐based microneedles for transdermal drug delivery
VIEW, EarlyView.This study provides a comprehensive and up‐to‐date analysis of recent progress in HMN technology, covering fundamental transdermal delivery mechanisms and design principles, biomaterials used in HMN fabrication, drug loading and release strategies, and emerging therapeutic applications.
Mohammad Muhtasim Ittisaf +5 more
wiley +1 more source
Foreign Drilling Equipment and Technology Progress
Shiyou jixie, 2016 The introductions have been given to the latest foreign drilling equipment and technologies——new type drilling rig (Aecher modular rig, modular offshore drilling rig, fast-moving rig and Ideal rig), new drill bit (two stage dual diameter PDC bit, new ...
Guo Xianmin, Hou Fang
doaj
With a Great Story Comes Great Responsibility: Role of Narrative in Leadership Development
New Directions for Student Leadership, Volume 2025, Issue 185, Page 81-87, Spring 2025.ABSTRACT Comic books reside uniquely within American culture. Historians have contended comics are more than just sequential artwork mixed with engaging stories, but rather, a framework by which the generations make sense of who they are. These stories are a reflection of cultural conscience; a lens through which we can view the world and a mirror ...
Sean Connable
wiley +1 more source
Herbivore and mesocarnivore carcasses trigger divergent short‐term changes in soil properties
Journal of Animal Ecology, EarlyView.Scavengers reshape nutrient cycles in soils under carrion. Compared to herbivore carcasses, smaller but longer‐lasting carnivore remains boost nutrient levels and microbial activity in dry soils. Abstract Animal corpses act as pulses of organic matter (OM) and serve a key zoogeochemical role by providing localized nutrient inputs to soils and thereby ...
Adrián Colino‐Barea +15 more
wiley +1 more source