[en] To draw up the change curve of standardized urine HCG and β-HCG levels in normal gestation women in Fuzhou. The HCG and β-HCG levels in 180 normal pregnant women (gestational week 5-40) urine samples were detected by RIA and the urinary creatinine was also measured by enzymatic analysis. The standardized urine HCG and β-HCG levels were calculated by correction with urinary creatinine, and the change curves of standardized urine HCG and β-HCG throughout normal gestation were made. The results showed that the curves of standardized urine HCG and β-HCG were fitted normally (P<0.05), and the related coefficient (R2) were 0.628 and 0.702 respectively. The change curves of standardized urine HCG and β-HCG in normal gestation and changes of HCG in urine and serum in Fuzhou were matched with early reports in literature. (authors)

[en] The recent development of novel refractory materials for fusion applications with better ductile properties has led, in the recent years, to rethink the helium cooled divertor design under development at KIT. In particular, the availability of pipes and plates made of tungsten laminates showing very good mechanical properties over an extended temperature range has triggered a new search for concepts in which such materials can be used. As a first attempt, a divertor concept having a similar geometry with the water-cooled divertor developed for ITER was investigated both numerically and experimentally. The concept uses W slabs as armor brazed on a 15mm in diameter W-Cu laminate tube. The heat deposited on the surface of the armor is removed using a jet-impingement cooling scheme.

[en] The Beijing Spectrometer (BES) is a large scale magnetic spectrometer for Beijing electron-positron collider. The magnetic field stability of BES is very important for data quality. At present, there are two methods of measuring magnetic field on BES. They are NMR and Hall magnetic field measurement systems

[en] Highlights: • Droplet moving on inclined surface with 56• Droplet velocity model is improved considering the internal flow pattern- effect. • Improved velocity model predicts experimental data better than the previous. • Onset of droplet motion and transition models predict the experimental data well. Understanding the behavior of moving droplet on inclined containment wall is significant to evaluate condensation heat and mass transfer, aerosol wash-down by condensate flow, etc. The models describing moving droplet, such as the onset of motion, the droplet velocity and the flow pattern transition criterion from droplet to rivulet are presented. Concerning the droplet velocity model, the flow field inside droplet and the dynamic contact angle model are considered to evaluate the viscous force and surface tension force respectively acting on fast moving droplet. A new experiment of water droplets moving on inclined surface coated with decontamination paint, DRISE, is performed with the $\mathit{Re}$ number range 56$\mathit{Re}$$\mathit{Re}$ number, the new developed droplet velocity model on the tilted surface and the criterion of the transition from droplet to rivulet are well validated with the data from the DRISE experiment and the experiment from open literature.

[en] SPECT bone scanning requires patients with injection of ^99mTc radioactive drug. Patients stayed in SPECT drawing room for three hours after injection to protect the public safety. But discharged patients could bring radiation impact to public if there was no protection measures. So it's necessary to estimate the radiation effective dose of public. 451P radiation dosimeter was used to measure external air absorption dose rate for discharged patients. Then Mountford method to estimate the radiation effective dose of public. The estimation result must meet the national radiation safety standards. Through estimating radiation effective dose of public by discharged patients with injection of ^99mTc, the result meet national standard limit value. (authors)

[en] Internal flooding in nuclear power plant is a possible internal disaster, which will lead to serious accidents in nuclear power plant, so it is necessary to carry out safety assessment. The small reactor ACP100 independently developed by China National Nuclear Corporation is an advanced small pressurized water reactor, which was approved to start construction in June 2021. Through the self-developed advanced three-dimensional simulation software (CNIFA), this paper evaluates the internal flooding safety of small reactor (ACP100), and puts forward some suggestions for design improvement. Firstly, the physical model of the plant (reduction ratio 1:10) is built to simulate the water flooding spread in the room of the nuclear power plant. The physical experimental results are compared with the simulation results of CNIFA. The results show that CNIFA has good applicability and accuracy in internal flooding safety assessment. Secondly, the safety assessment of the possible flooding event of the electrical plant in ACP100 nuclear power plant is carried out through CNIFA, and the protective measures are taken for the important safety equipment in the plant according to the simulation results. (author)

[en] Microwave imaging reflectometry (MIR) is a kind of important means in plasma turbulence diagnosis, which is used to obtain the 2-D/3-D image of the turbulences and instabilities with high space and time resolutions, so that visualized real-time observation of plasma turbulence field can be achieved and more accurate information can be gained. This paper presents the theoretical calculation and optical simulation of an 8 mm MIR with quasi-optical system according to the parameters of the HL-2A Tokamak. And the quasi-optical system in the MIR is then designed. (authors)

[en] The hardware configuration and software under C⁺⁺ environment have been described for gas system of Beijing spectrometer

[en] This paper describes the system hardware configuration and software under environment C⁺⁺. And the users can friendly use menu driving

[en] A series of <111> oriented Ag₂O films was deposited onto glass substrates by using RF magnetron reactive sputtering at different flow ratios (FRs) of oxygen to argon. The Ag₂O film deposited at FR = 0.667 was the best <111> oriented film due to dual contributions from both lattice strain and film stress. The films' transmissivity of over 70% in the near-infrared region indicated that Ag₂O films are not suitable for applications as transparent conductive films in the visible region. Ag₂O films deposited at FRs from 0.467 to 0.800 had optical band gaps ranging from 3.266 eV to 3.107 eV. The redshift in the films' absorption edge may be attributed to the decrease in the lattice strain with increasing in FR.