Results 81 to 90 of about 388,588 (308)

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Optimal bit selection for large-diameter wellbore drilling in an ultra-deep well

Petroleum Exploration and Development
To optimize the bit selection for large-diameter wellbore in the upper section of an ultra-deep well S-1, a full-well dynamic model integrating drill string vibration and bit rock-breaking was established and then verified using measured vibration data ...
Lili CHEN, Wenzhe LI, Jianhua GUO, Ke LI, Zhixiang CAI, Jie WU, Weining XU, Xiaohua ZHU   +7 more
doaj   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Prediction for Rate of Penetration Based on PCA-BP Algorithm

Shiyou jixie, 2023
Rate of penetration(ROP)is an important index to measure drilling efficiency.Accurate prediction of ROP plays an important role in improving drilling efficiency and reducing costs,but the commonly used ROP equation prediction model has difficulties in ...
Tang Ming, Wang Hanchang, He Shiming, Zhang Guangfu, Kong Linghao   +4 more
doaj  

Determination of the Rate of Penetration by Robust Machine Learning Algorithms Based on Drilling Parameters. [PDF]

ACS Omega, 2023
Alavi Nezhad Khalil Abad SV, Hazbeh O, Rajabi M, Tabasi S, Lajmorak S, Ghorbani H, Radwan AE, Mudabbir M.   +7 more
europepmc   +1 more source

Artificial Neural Network Model for Prediction of Drilling Rate of Penetration and Optimization of Parameters

, 2014
The rate of penetration (ROP) achieved with the bit has a direct and obvious effect on the cost per foot drilled. There are some variables, which affect the rate of penetration.
Mahmood Bataee, S. Irawan, M. Kamyab
semanticscholar   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

ACCURATE PREDICTION OF DRILL BIT PENETRATION RATE IN ROCK USING SUPERVISED MACHINE LEARNING TECHNIQUES BASE ON LABORATORY TEST DATA

Rudarsko-geološko-naftni Zbornik
Knowing the rate of penetration of a drill bit in rocks is among the most important parameters in their behaviour measurement. However, the direct measurement of ROP in rocks is a high-cost and time-intensive process.
Shahrokh Khosravimanesh, Akbar Esmaeilzadeh, Masoud Akhyani, Reza Mikaeil, Mojtaba Mokhtarian Asl   +4 more
doaj   +1 more source

Rab14 regulates the transport of human papillomavirus to the trans‐Golgi network for infectious cell entry

FEBS Letters, EarlyView.
This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley   +1 more source

A Study on Factors Affecting Airborne LiDAR Penetration

Terrestrial, Atmospheric and Oceanic Sciences, 2015
This study uses data from different periods, areas and parameters of airborne LiDAR (light detection and ranging) surveys to understand the factors that influence airborne LiDAR penetration rate.
Wei-Chen Hsu, Peter Tian-Yuan Shih, Hung-Cheng Chang, and Jin-King Liu   +3 more
doaj   +1 more source