On information field of clinical diagnosis

“Field” is a universal phenomenon existing in both nature and society, and determines the existence and significance of all materials or information. The man being has always been generating and carrying a large quantity of life information in his whole life. Each piece of life information has an independent information field. The life information field includes such three subfields as bioinformation field, psychoinformation field and psycho-bioinformation field. The clinical diagnosis information field which is a specific information field within the information field of human activities consists of all information concerning man’s health. Only after we have cognized and ascertained the clinic diagnosis information field, can we accurately utilize its function to serve the human being.

Comparison of imo and Humphrey field analyzer perimeters in glaucomatous eyes

AIM:To compare the imo perimeter,a new portable head-mounted perimeter unit that enables both eyes to be examined quickly and simultaneously,with the Humphrey field analyzer(HFA)perimeter to investigate correlations and their diagnostic ability in glaucomatous eyes.METHODS:The performance of the equipment in 128 glaucomatous eyes and 40 normal eyes were tested.We investigated the correlations of mean deviation,pattern standard deviation,visual field index,and the sensitivity.RESULTS:Measurements of mean deviation(r=0.886,P<0.001),pattern standard deviation(r=0.814,P<0.001),and visual field index(r=0.871,P<0.001)in both perimeters were strongly and positively correlated.The sensitivities in the imo perimeter were 80.5%for mean deviation,81.2%for pattern standard deviation,and 80.5%in visual field index;those in the HFA were 63.3%for mean deviation,74.5%for pattern standard deviation,and 80.5%for visual field index.Both perimeters demonstrated high diagnostic ability.CONCLUSION:The parameters by the imo and HFA in glaucomatous eyes show strong positive correlations with favorable sensitivity,specificity,and diagnostic ability.However,the difference between imo and HFA results increases with the increase in visual field disturbance.

Rapid detection of the rice false smut fungus Ustilaginoidea virens by lateral flow strip-based recombinase polymerase amplification assay

Rice false smut,caused by Ustilaginoidea virens,is a devastating disease that greatly reduces rice yield and quality.However,controlling rice false smut disease is challenging due to the unique infection mode of U.virens.Therefore,there is a need for early diagnosis and monitoring techniques to prevent the spread of this disease.Lateral flow strip-based recombinase polymerase amplification(LF-RPA)overcomes the limitations of current U.virens detection technologies,which are time-consuming,require delicate equipment,and have a high false-positive rate.In this study,we used a comparative genomics approach to identify Uv_3611,a specific gene of U.virens,as the target for the LF-RPA assay.The designed primers and probe efffectively detected the genomic DNA(gDNA)of U.virens and demonstrated no cross-reactivity with related pathogens.Under optimal conditions,the LF-RPA assay demonstrated a sensitivity of 10 pg of U.virens gDNA.Additionally,by incorporating a simplified PEG-NaOH method for plant DNA extraction,the LF-RPA assay enabled the detection of U.virens in rice spikelets within 30 min,without the need for specialized equipment.Furthermore,the LF-RPA assay successfully detected U.virens in naturally infected rice and seed samples in the field.Therefore,the LF-RPA assay is sensitive,efficient,and convenient,and could be developed as a kit for monitoring rice false smut disease in the field.

A Simple Method of Flow Field Diagnosis in Multistage Axial Flow Compressors

The calculating method of flow field diagnosis in multistage axial compressors is presented in this paper.The distributions of loss and deviation angle of every blade row, and blockage factors are evaluated using tested total temperature and total pressure at inlet and outlet of compressor, as well as the endwall static pressures. One operating mode of a two-stage fan is presented comparing results from the diagnostic method with measurements, and the results have demonstrated the important effects of diagnostic method.

Numerical Solution of Flow Field Diagnosis Problem in Multistage Axial Compressors

A mathematical model is developed for the flow field diagnosis problem in multistage axial compressors. In view of the ill-posedness of the diagnostic problem, an effective measure is adopted to transfer the diagnostic problem into a variational problem which is solved by a regularization method. Two numerical results demonstrate the rationality of the flow field diagnosis Problem and the effectiveness of the computational method.

Application Study of Trajectory Plume Model in Atmospheric Environmental Impact Assessment

[ Objective] The research aimed to study application of the trajectory plume model in atmospheric environmental impact assessment. [ Method] Trajectory plume model was used to retrospectively evaluate regional atmospheric improvement degree by fuel gas desulfurization project in Mawan Power Plant of Shenzhen. On this basis, we analyzed applicability of the model in atmospheric prediction of the construction project. [- Re- sult~ Under the situation of complex flow field and variable weather condition, the trajectory plume model displayed good prediction accuracy, to- gether with the use of flow field diagnosis model. Under complex weather condition, this model could be complementary to atmospheric environmen- tal quality prediction model recommended by new atmosphere guidelines, which had the value of popularization in future atmospheric environmental evaluation and planning. [ Conduslon~ Trajectory plume model had broad application potential in atmospheric environmental impact assessment.