Insufficient oxygen level in sewer claims the life of plumbing contractor in Georgia.

1986 ◽  
Keyword(s):  
Oxygen Level

Effects of oxygen level on metabolism and development of seedlings of Trapa natans and two ecologically related species

1992 ◽  
Vol 86 (1) ◽  
pp. 168-172 ◽  
Author(s):  
Faustino Menegus ◽  
Liliana Cattaruzza ◽  
Leonardo Scaglioni ◽  
Enzio Ragg
Keyword(s):  
Related Species ◽  
Oxygen Level ◽  
Trapa Natans

In vivo Monitoring of Oxygen Levels in Human Brain Tumor Between Fractionated Radiotherapy Using Oxygen-enhanced MR Imaging

2020 ◽  
Vol 16 (4) ◽  
pp. 427-432
Author(s):  
Junchao Qian ◽  
Xiang Yu ◽  
Bingbing Li ◽  
Zhenle Fei ◽  
Xiang Huang ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Tumor Cells ◽  
Normal Tissue ◽  
Oxygen Level ◽  
Tissue Oxygen ◽  
Human Brain Tumor ◽  
Fractionated Radiotherapy ◽  
Oxygen Levels ◽  
Oxygen Breathing

Background:: It was known that the response of tumor cells to radiation is closely related to tissue oxygen level and fractionated radiotherapy allows reoxygenation of hypoxic tumor cells. Non-invasive mapping of tissue oxygen level may hold great importance in clinic. Objective: The aim of this study is to evaluate the role of oxygen-enhanced MR imaging in the detection of tissue oxygen levels between fractionated radiotherapy. Methods: A cohort of 10 patients with brain metastasis was recruited. Quantitative oxygen enhanced MR imaging was performed prior to, 30 minutes and 22 hours after first fractionated radiotherapy. Results: The ΔR1 (the difference of longitudinal relaxivity between 100% oxygen breathing and air breathing) increased in the ipsilateral tumor site and normal tissue by 242% and 152%, respectively, 30 minutes after first fractionated radiation compared to pre-radiation levels. Significant recovery of ΔR1 in the contralateral normal tissue (p < 0.05) was observed 22 hours compared to 30 minutes after radiation levels. Conclusion: R1-based oxygen-enhanced MR imaging may provide a sensitive endogenous marker for oxygen changes in the brain tissue between fractionated radiotherapy.

A co-delivery nanoplatform for Lignan-derived compound and perfluorocarbon tuning IL-25 secretion and oxygen level in tumor microenvironments for meliorative tumor radiotherapy

Nanoscale ◽  
2021 ◽  
Author(s):  
Zhenyu Duan ◽  
Qiang Luo ◽  
Lei Gu ◽  
Xiaoling Li ◽  
Hongyan Zhu ◽  
...  
Keyword(s):  
Therapeutic Efficacy ◽  
Glycolic Acid ◽  
Treatment Technique ◽  
Oxygen Level ◽  
Tumor Microenvironments ◽  
Hypoxic Environment ◽  
Control Tumor ◽  
Tumor Metastases ◽  
Localized Treatment

A hypoxic environment in tumors hampers the therapeutic efficacy of radiotherapy. Moreover, radiotherapy, a localized treatment technique, can barely control tumor metastases. Herein, poly(lactic co-glycolic acid) was used to encapsulate...

Declining Oxygen Level as an Emerging Concern to Global Cities

2021 ◽  
Author(s):  
Yun Wei ◽  
Jianguo Wu ◽  
Jianping Huang ◽  
Xiaoyue Liu ◽  
Dongliang Han ◽  
...  
Keyword(s):  
Global Cities ◽  
Oxygen Level

Effect of coal rank, oxygen level and particle size on oxidation reactivity of typical Chinese coals

2021 ◽  
Vol 696 ◽  
pp. 178838
Author(s):  
Xing Liu ◽  
Houzhang Tan ◽  
Xuebin Wang ◽  
Zhao Wang ◽  
Jiaye Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Coal Rank ◽  
Oxygen Level ◽  
Oxidation Reactivity

Blood oxygen-level dependent functional assessment of cerebrovascular reactivity: Feasibility for intraoperative 3 Tesla MRI

2016 ◽  
Vol 77 (2) ◽  
pp. 806-813 ◽  
Author(s):  
Jorn Fierstra ◽  
Jan-Karl Burkhardt ◽  
Christiaan Hendrik Bas van Niftrik ◽  
Marco Piccirelli ◽  
Athina Pangalu ◽  
...  
Keyword(s):  
Functional Assessment ◽  
Blood Oxygen Level Dependent ◽  
Cerebrovascular Reactivity ◽  
3 Tesla ◽  
Blood Oxygen ◽  
Oxygen Level ◽  
Blood Oxygen Level ◽  
3 Tesla Mri
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