Search results for: Chen Zhijian
Biochemical and Biophysical Research Communications > 2013 > 433 > 1 > 36-39
Environmental Toxicology and Pharmacology > 2009 > 28 > 2 > 275-279
Toxicology > 2006 > 224 > 1-2 > 138-146
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This paper presents a novel low-cost automatic DC-Offset cancellation method and circuit for DAC in RF transmitter. The automatic DC-Offset cancellation block consists of one voltage comparator, one 5-bit R-2R auxiliary DAC and a SAR digital block. The proposed DC-Offset cancellation works during power-on sequence, then stores the value of control word in registers and shuts down the comparator and...
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In the present study, the protein microarray was used to investigate the protein expression in human B-cell lymphoblastoid cells intermittently exposed to 1.8-GHz GSM radiofrequency radiation (RFR) at the specific absorption rate (SAR) of 2.0W/kg for 24h. The differential expression of 27 proteins was found, which were related to DNA damage repair, apoptosis, oncogenesis, cell cycle and proliferation...
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In the present in vitro study, a comet assay was used to determine whether 1.8-GHz radiofrequency radiation (RFR, SAR of 2W/kg) can influence DNA repair in human B-cell lymphoblastoid cells exposed to doxorubicin (DOX) at the doses of 0μg/ml, 0.05μg/ml, 0.075μg/ml, 0.10μg/ml, 0.15μg/ml and 0.20μg/ml. The combinative exposures to RFR with DOX were divided into five categories. DNA damage was detected...
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In present study, human lymphocytes were exposed to cigarette smoke condensates (CSCs) at the doses of 25, 50, 75, 100 and 125μgml −1 with and without S9, and the cyto-genotoxic effects were detected with CCK-8, cell apoptosis and micronucleus assays. DNA repair kinetics was observed with comet assay. Our results indicated that the cell viability decreased with CSCs doses, the percentages...
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In the present study, the in vitro comet assay was used to determine whether 1.8-GHz radiofrequency radiation (RFR) can influence DNA repair in human leukocytes exposed to X-rays. The specific energy absorption rate (SAR) of 2W/kg (the current European safety limit) was applied. The leukocytes from four young healthy donors were intermittently exposed to RFR for 24h (fields on for 5min, fields off...
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The aim of this research work was to study the cellular response to ionizing radiation (IR) and its relationship with the ATM protein expression levels in lung cancer patients. Heparinized blood samples were collected from 22 controls and 22 lung cancer patients. Each sample was divided into two parts: non-irradiated sample and irradiated sample, which was exposed to 3Gy X-ray. The spontaneous and...
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