A technique for multiple, high-rate blood samplings via an external cannula in rats

1979 ◽  
Vol 46 (1) ◽  
pp. 197-199 ◽  
Author(s):  
J. F. Staub ◽  
G. Coutris
Keyword(s):  
Blood Sample ◽  
High Frequency ◽  
Surgical Procedure ◽  
Blood Sampling ◽  
High Rate ◽  
Blood Components ◽  
High Frequency Oscillations

A method for obtaining multiple, high-rate blood sample collections from rats without the use of anesthesia and anticoagulant is described. The surgical procedure consists of a bypass of the carotid via a cannula; this cannula forms a loop above the rat's head and is available for blood sampling. The method permits the investigation of high-frequency oscillations in blood components of rat.

scholarly journals Quantum Zeno Jumps in a Resonantly Driven Qubit under Frequent Measurements

2021 ◽  
Vol 4 (3) ◽  
Keyword(s):  
High Frequency ◽  
Continuous Measurement ◽  
Photon Emission ◽  
Mean Value ◽  
High Rate ◽  
Level System ◽  
Quantum Zeno Effect ◽  
Zeno Effect ◽  
High Frequency Oscillations ◽  
Jump Dynamics

In Nature, 570, 200 (2019), Minev and co-authors’ experiment shows how to deterministically “catch and reverse a quantum jump mid-flight” in a continuously-observed Rabi-stimulated qubit. Its interpretation is in debate (La Recherche, 555, 40, (2020)). We show that the quantum Zeno effect (QZE) of continuous measurement —by use of photon emission from a 3rd high-rate monitored ancilla level— can be described by an action-angle canonical transformation of the original Hamiltonian dynamical system (HDS) theory of QZE. Then energy whose mean value yields the well-known resonant Rabi harmonic dynamics is actually defined by large-amplitude high-frequency oscillations of the internal as well as of the overall phase of the two-level system. By making use of their standard deviation, we show that the separatrix crossing of the HDS trajectory yields the quantized action nh where n = 1, 2, 3 .... Therefore, the jump dynamics observed in Minev et al. experiment belongs to a series of discrete quantum jumps: it corresponds in this experiment to n = 3.

scholarly journals Resection of individually identified high-rate high-frequency oscillations region is associated with favorable outcome in neocortical epilepsy

Epilepsia ◽  
2014 ◽  
Vol 55 (11) ◽  
pp. 1872-1883 ◽  
Author(s):  
Jounhong Ryan Cho ◽  
Dae Lim Koo ◽  
Eun Yeon Joo ◽  
Dae Won Seo ◽  
Seung-Chyul Hong ◽  
...  
Keyword(s):  
High Frequency ◽  
Favorable Outcome ◽  
High Rate ◽  
High Frequency Oscillations ◽  
Neocortical Epilepsy

1-A-D-6. High-rate REM sleep high frequency oscillations (HFOs) are specific to epileptogenicity

2015 ◽  
Vol 126 (6) ◽  
pp. e57-e58
Author(s):  
Rie Sakuraba ◽  
Masaki Iwasaki ◽  
Eiichi Okumura ◽  
Kazutaka Jin ◽  
Yosuke Kakisaka ◽  
...  
Keyword(s):  
Rem Sleep ◽  
High Frequency ◽  
High Rate ◽  
High Frequency Oscillations

scholarly journals Can we use intraoperative high‐frequency oscillations to guide tumor‐related epilepsy surgery?

Epilepsia ◽  
2021 ◽  
Author(s):  
Nicole E. C. Klink ◽  
Willemiek J. E. M. Zweiphenning ◽  
Cyrille H. Ferrier ◽  
Peter H. Gosselaar ◽  
Kai J. Miller ◽  
...  
Keyword(s):  
Epilepsy Surgery ◽  
High Frequency ◽  
High Frequency Oscillations

scholarly journals High-frequency oscillations recorded with surface EEG in neonates with seizures

2021 ◽  
Author(s):  
Lotte Noorlag ◽  
Maryse A. van 't Klooster ◽  
Alexander C. van Huffelen ◽  
Nicole E.C. van Klink ◽  
Manon J.N.L. Benders ◽  
...  
Keyword(s):  
High Frequency ◽  
High Frequency Oscillations ◽  
Surface Eeg

scholarly journals A Study on Hematopoietic Stem Cell Donation Volunteer Retention between Swab Sampling Approach and Blood Sampling Approach: Evidence from Shanghai, China

2021 ◽  
Vol 18 (8) ◽  
pp. 4027
Author(s):  
Ke Yan ◽  
Gang Zhang ◽  
Guoqiang Zhao ◽  
Baosong Liu ◽  
Jun Lu
Keyword(s):  
Stem Cell ◽  
Blood Sample ◽  
Hematopoietic Stem Cell ◽  
Blood Sampling ◽  
Distribution Characteristics ◽  
Hematopoietic Stem ◽  
Volunteer Retention ◽  
Sample Group ◽  
Stem Cell Donation ◽  
Sampling Approach

The loss of hematopoietic stem cell donation (HSCD) volunteers is widespread worldwide. This study analyzed the distribution characteristics of volunteer retention between the swab sampling approach and blood sampling approach. The Shanghai branch of the China Bone Marrow Donation Program conducted a telephone follow-up with 18,963 volunteers to understand volunteer retention. Multiple logistic regression was used to analyze the distribution characteristics of volunteer retention between two different sampling approaches, and a forest plot was used to observe the distribution trend. Only 32.37% of the volunteers could be contacted, and the loss of volunteers was severe. The volunteer retention is influenced by sampling approaches and demographic characteristics, and Shanghai natives, the highly educated, and students had better retention. The volunteer retention of the swab group was better among young people and technicians, while the volunteer retention of the blood sample group was lower among public officials and workers, and the volunteer retention in the blood sample group was more significantly affected by changes in population characteristics. To enhance the stability of volunteers, managers should improve the contact channels and frequency, expand the ratio of stable volunteers, strengthen volunteer education in the process of collecting blood samples, and respect individuals’ willingness.

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