Results 51 to 60 of about 11,584 (265)

Nonlinear Dynamics Modeling and Analysis of Underwater Mud-Penetrator Steering System

IEEE Access, 2018
Adopting underwater mud-penetrator to thread the steel wire is one of the important steps in the current wreck salvage process, which is safer and more efficient than threading with manpower by the diver. This paper first establishes the kinematics model
Yinglong Chen, Hui Liu, Zengmeng Zhang, Jiaoyi Hou, Yongjun Gong   +4 more
doaj   +1 more source

Poking Pluripotency: Nanoinjection Into Human iPSCs

Advanced Materials, EarlyView.
Nanoinjection into hiPSCs: silicon nanotubes effectively transfect human induced pluripotent stem cells (hiPSCs) with mRNA, enabled by a delayed extracellular matrix application and enhanced surface functionalization. Nanoinjection is demonstrated with several reporter mRNA, including co‐transfection of mCherry and GFP.
Jann Harberts, Vuong Thi Thanh Xuan Ho, Yuqi Yang, Yuan Jiang, Roey Elnathan, Nicolas H. Voelcker   +5 more
wiley   +1 more source

Application of Shock Absorber based on Bit-rock Interaction

Shiyou jixie, 2022
In order to obtain the optimal parameters of shock absorber and thus reduce the downhole vibration intensity in the process of rock-breaking drilling of bit,on the basis of considering the dynamic coupling of drill string,bit and rock system,taking the ...
Hu Zhiqiang, Zhu Xiaohua, Wang He, Liang Jianlong, Yang Hancheng, Zheng Xiang   +5 more
doaj  

Efficacy and Safety Assessment of 5‐Fluorouracil, Irinotecan and Oxaliplatin‐Loaded Implants in Mouse and Pig Models for Pancreatic Cancer Therapy

Advanced Materials, EarlyView.
A novel FIRINOX‐loaded implant demonstrates controlled drug release, and potent therapeutic efficacy in pancreatic ductal adenocarcinoma mouse models with safety confirmed in a large‐animal pre‐clinical model. This innovative drug delivery platform offers a promising new treatment approach for non‐resectable, treatment‐resistant pancreatic cancer ...
Samantha J. Wade, Ashna A. Kumar, Samuel O. Nitschke, Paul Joyce, Elahe Minaei, Stephanie E. Reuter Lange, Chelsea Penney, Holly Warren, Ruby Shepherd, Jeremy N. Dinoro, Gordon G. Wallace, Anthony Dosseto, Sameera Ansar, Naila Islam, Alistair Lochhead, George Sharbeen, Phoebe A. Phillips, Morteza Aghmesheh, Wayne J. Hawthorne, Kara L. Vine‐Perrow   +19 more
wiley   +1 more source

Study on Mechanism of Stick–Slip Vibration Based on Torque Characteristics of PDC Bit

Applied Sciences
Stick–slip vibration (SV) of drill string systems is the main cause of fatigue failure of PDC bits under complex drilling conditions. Exploring its mechanism is helpful for identifying the causes of bit failure and developing preventive measures to ...
Lijun Li, Chunliang Zhang, Aixuan Wu
doaj   +1 more source

Dielectric and Gate Metal Engineering for Threshold Voltage Modulation in Enhancement Mode Monolayer MoS2 Field Effect Transistors

Advanced Materials, EarlyView.
Enhancement‐mode monolayer MoS2 FETs with low threshold voltage are essential for low‐power electronics. The threshold voltage can be tuned by the gate metal work function when the semiconductor/dielectric interface is clean. Interfaces between monolayer MoS2 and ZrO2 or hBN allow effective work‐function modulation of the threshold voltage, in contrast
Lixin Liu, Han Yan, Leyi Loh, Kamal Kumar Paul, Soumya Sarkar, Deepnarayan Biswas, Tien‐Lin Lee, Takashi Taniguchi, Kenji Watanabe, Manish Chhowalla, Yan Wang   +10 more
wiley   +1 more source

Ultrafast Photocatalytic Wettability Switching in Substrate‐Interface Tailored Titanium Dioxide Thin Films

Advanced Materials Interfaces, EarlyView.
This study demonstrates ultrafast photocatalytic wettability switching in TiO2 thin films by tailoring substrate doping and interface oxides. Enhanced switching rates and hemiwicking effects are achieved through optimized material stacks and nanostructuring.
Rucha A. Deshpande, Jesper Navne, David C. B. Nielsen, Mathias Adelmark, Radu Malureanu, Ole Hansen, Rafael Taboryski   +6 more
wiley   +1 more source

MECHANICAL ANALYSIS OF THE DRILL BIT IN THE DUAL CASING SIDETRACKING

Jixie qiangdu, 2016
In the dual casing sidetracking,the oil casing wall,cement ring,technical casing wall and rock formations’ hardness are different,furthermore,in the process of dual casing sidetracking the bit in contact with the oil casing wall,cement ring,technical ...
KONG ChunYan, LIANG Zheng, ZHANG DeRong
doaj  

Numerical Simulation on Rock Breaking of PDC Bit during Rotary Steerable Drilling

Shiyou jixie, 2021
When conventional PDC bits are used with rotary steerable tools, problems such as insufficient buildup rate and poor stability may occur, which seriously affect the normal operation of rotary steerable drilling systems.
He Wenhao, Wei Xiuyan, Qin Lei, Shi Huaizhong, Liu Caigeng, Zhao Xu   +5 more
doaj  

From Copper Nanoparticles to Alumina Encapsulated Porous Layers With Enhanced Mechanical Stability

Advanced Materials Interfaces, EarlyView.
This study analyzes the synthesis‐structure relation of individual Cu nanoparticles and highly porous nanoparticle‐based Cu films using different sputtering‐based nanoparticle sources. The inherent mechanical instability of the films is tackled with Al2O3 encapsulation through atomic layer deposition, enabling 4‐fold increase in critical force in ...
Dominik Gutnik, Daniele Casari, Laszlo Pethö, Michael Burtscher, Anna M. Hofer‐Roblyek, Christian Mitterer, Barbara Putz   +6 more
wiley   +1 more source