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activity detection for Enhanced Configured-Grant:A Practical Perspective

China Communications 2022年第3期19卷 181-191页

作者： Chenmin Sha Shidong Zhou Department of Electronic Engineering Tsinghua UniversityBeijing 100084China

We try to extend the current configuredgrant(CG)uplink scheme in 5G New Radio(NR)to support massive potential users and study activity detection under this *** of the continuously varying channel and the multiple repetition scheme are utilized to improve the detection accuracy,which can be an enhancement to existing activity detection *** results under 3 GPP TDL(Tapped Delay Line)fading channel show the superiority of our *** system-level simulation reveals that enhancements on activity detection can improve reliability and reduce latency.

关键词： configured-grant massive access activity detection

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Combined Extracting Process and activity detection of Porcine Blood Superoxide Dismutase

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Animal Husbandry and Feed Science 2009年第3期1卷 7-10页

作者：王永芬索江华李华玮吴学军张俊英郑州牧业工程高等专科学校生物工程系河南郑州450011 郑州市通源生物技术有限公司河南郑州450001

[Objective] TO study the combined extracting process of porcine blood superoxide dismutase （SOD） and other bioactive substances and thus to provide technical basis for making full use of blood resources and large-scale production of SOD. [Method] Fibronectin, immunoglobulin, and hemoglobin were isolated from porcine blood, and SOD was extracted. Trace pyrogallol self-oxidation method to determine SOD activity was modified by optimizing the volume of pyrogallol and SOD samples, reaction temperature, and buffer pH. The specific activity of SOD was determined with the optimized extraction conditions. [ Result] The improved experimental conditions of SOD activity detection were as follows： 7 pyrogallol （50 mmol/L）, 3 ml Tris-HCI （50 mmol/L, pH 8.2）, reactive temperature at 25（3, and 10 pl SOD sample solution. The specific activity of extracted SOD was 5 056 U/mg protein. [ Conclusion] Four kinds of bioactive substance can be isolated from porcine blood by modern biological engi- neering integration technology, and the extracted SOD has better activity.

关键词： Porcine blood Superoxide dismutase Combined extracting activity detection

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A simplified and miniaturized glucometer-based assay for the detection of β-glucosidase activity

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2019年第3期20卷 264-274页

作者： Min-yi JIN Tong ZHANG Yi-shun YANG Yue DING Jun-song LI Gao-ren ZHONG Experiment Center for Teaching and Learning Shanghai University of Traditional Chinese MedicineShanghai 201203China School of Pharmacy Fudan UniversityShanghai 200032China

β-Glucosidase activity assays constitute an important indicator for the early diagnosis of neonatal necrotizing enterocolitis and qualitative changes in medicinal *** drawbacks of the existing methods are high consumption of both time and reagents,complexity in operation,and requirement of expensive instruments and highly trained *** present study provides a simplified,highly selective,and miniaturized glucometer-based strategy for the detection ofβ-glucosidase ***-factor experiments showed that optimumβ-glucosidase activity was exhibited at 50°C and pH 5.0 in a citric acid-sodium citrate buffer when reacting with 0.03 g/mL salicin for 30 *** procedure for detection was simplified without the need of a chromogenic *** of the analytical method demonstrated that the accuracy,precision,repeatability,stability,and durability were *** linear ranges ofβ-glucosidase in a buffer solution and rat serum were 0.0873–1.5498 U/mL and 0.4076–2.9019 U/mL,*** proposed method was free from interference fromβ-dextranase,snailase,β-galactosidase,hemicellulase,and glucuronic acid released by *** demonstrated that the proposed assay had a higher selectivity than the conventional dinitrosalicylic acid(DNS)assay because of the specificity for salicin and unique recognition of glucose by a personal glucose *** of the method resulted in a microassay forβ-glucosidase *** easy-to-operate method was successfully used to detect a series ofβ-glucosidases extracted from bitter almonds and cultured by Aspergillus *** addition,the simplified and miniaturized glucometer-based assay has potential application in the point-of-care testing ofβ-glucosidase in many fields,including medical diagnostics,food safety,and environmental monitoring.

关键词： Glucometer-based assay β-Glucosidase activity detection

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Development of a detection Method for Assaying Calf Intestine Alkaline Phosphatase activity

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Animal Husbandry and Feed Science 2015年第3期7卷 152-155,166页

作者： Lin Lin Lai Xiaofang Li Yi Liu Yixiong Lan Quanxue Lai Xintian Yang Guowu Shenzhen Academy of Metrology & Quality Inspection

[ Objective] This study was to develop a detection method for assaying calf intestine alkaline phasphatase activity in scientific research. [ Method ] By simulating the conditions and buffers for assaying calf intestine alkaline phosphatase used in the scientific research, the parameters influencing substmte concentration, reaction duration, eoloration time and buffer pH were optimized. [ Result] The activity of alkaline phosphatase detected varied hugely among different buffers, and potassium ferricyanide solution added with boracic acid achieved the stable coloration. The optimal water bath time was determined as 10 rain, and the substrate concentration was optimized as 0.04 moL/L. The increasing temperature did not have a large influence on low temperature enzymatic activity while did on high coneentration enzymatic activity. When the buffer pH was 7.0 - 8.0, the detection stability of alkaline phosphatase could be maintained well The ion intensity of buff- er had little effects on alkaline phasphatase activity. [ Conclusion] A detection method for assaying calf intestine alkaline phosphatase activity in scientific research was successfully developed in this study.

关键词： Alkaline phosphatase Calf intestine activity detection Ultraviolet spectrophotomctry Scientific research

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Massive Unsourced Random Access Under Carrier Frequency Offset

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ZTE Communications 2023年第3期21卷 45-53页

作者： XIE Xinyu WU Yongpeng YUAN Zhifeng MA Yihua Shanghai Jiao Tong University Shanghai 200240China ZTE Corporation Shenzhen 518057China State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen 518055China

Unsourced random access(URA)is a new perspective of massive access which aims at supporting numerous machine-type *** the appearance of carrier frequency offset(CFO),joint activity detection and channel estimation,which is vital for multiple-input and multiple-output URA,is a challenging *** handle the phase corruption of channel measurements under CFO,a novel compressed sensing algorithm is proposed,leveraging the parametric bilinear generalized approximate message passing framework with a Markov chain support model that captures the block sparsity structure of the considered angular domain *** uncoupled transmission scheme is proposed to reduce system complexity,where slot-emitted messages are reorganized relying on clustering unique user *** results reveal that the proposed transmission design for URA under CFO outperforms other potential methods.

关键词： activity detection channel estimation frequency offset massive machine-type communication massive MIMO

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