Objective:To establish an automatic classification approach for bone marrow cells based on microscopic hyperspectral imaging and three-dimensional spectral convolutional neural network (Spec-CNN).Methods:The research type is establishment of methodology. The study included 306 newly diagnosed patients' bone marrow smears under Wright's staining from the Department of Hematology of the First Medical Center of the PLA General Hospital from November 1st, 2013 to April 30th, 2024. The high-spectrum data and 4k image data of bone marrow cells were simultaneously collected using a microscopic hyperspectral-4k optical path integrated imaging system (with a spectral resolution of 400—1 000 nm). The high-spectrum data was used for model training, while the 4k image data recognized by morphologists was only used as a reference for labeling the high-spectrum data. The high-spectrum data set was divided into training set, validation set and test set in a ratio of 14∶6∶5. The training set and validation set were used to train and fine-tune the Spec-CNN model, and the test set was used to evaluate the model performance. The sensitivity, specificity ,accuracy ,and Kappa coefficient were calculated for comparing the manual annotation results as gold standard with the intelligent identification results of the Spec-CNN model. Five non-data set samples were used for external validation.Results:The acquired hyperspectral data and 4k imaging dataset comprised of 32 categories and 64 800 bone marrow cells. In the test set, the Spec-CNN model demonstrated weighted-average indicators on classification metrics across 32 cell types: sensitivity 87.79%, specificity 99.31%, and accuracy 98.78%, and Kappa coefficient 0.869. For external validation, the mean correct identification rate of bone marrow cells reached 83.28%.Conclusion:We successfully established an automatic classification method of bone marrow cells based on microscopic hyperspectral imaging and three-dimensional Spec-CNN. This method has a good automatic classification ability for 32 types of bone marrow nucleated cells, which has a certain auxiliary effect on improving the diagnosis efficiency of blood diseases for bone marrow morphologists.

This study aims to prepare nanobodies for the epitopes of spike protein(S)of porcine ep-idemic diarrhea virus(PEDV),and verify its reactivity.The expression vector pCZN1-SN was con-structed by the prokaryotic expression system,and SN fragment was expressed in prokaryotic ex-pression and purified by Ni-NTA chromatography column.The SN nanobodies were displayed u-sing phage display technology and screened from the natural nanobody library.The results showed that SN fragments with a size of 26 kDa were obtained by prokaryotic induction,and the specific nanobodies were obtained through three rounds screening by phage display technology.One strain with the best reactivity was selected for prokaryotic expression and purified.The nanobodies were obtained with a size of 14 kDa by Western blot and demonstrated to have a good binding ability to PEDV SN protein.In summary,nanobodies with epitope fragments of PEDV S protein were suc-cessfully screened and prepared based on the phage display technology,which provided a new way for the in-depth application of nanobodies.

This study aims to prepare nanobodies for the epitopes of spike protein(S)of porcine ep-idemic diarrhea virus(PEDV),and verify its reactivity.The expression vector pCZN1-SN was con-structed by the prokaryotic expression system,and SN fragment was expressed in prokaryotic ex-pression and purified by Ni-NTA chromatography column.The SN nanobodies were displayed u-sing phage display technology and screened from the natural nanobody library.The results showed that SN fragments with a size of 26 kDa were obtained by prokaryotic induction,and the specific nanobodies were obtained through three rounds screening by phage display technology.One strain with the best reactivity was selected for prokaryotic expression and purified.The nanobodies were obtained with a size of 14 kDa by Western blot and demonstrated to have a good binding ability to PEDV SN protein.In summary,nanobodies with epitope fragments of PEDV S protein were suc-cessfully screened and prepared based on the phage display technology,which provided a new way for the in-depth application of nanobodies.

Objective:To establish an automatic classification approach for bone marrow cells based on microscopic hyperspectral imaging and three-dimensional spectral convolutional neural network (Spec-CNN).Methods:The research type is establishment of methodology. The study included 306 newly diagnosed patients' bone marrow smears under Wright's staining from the Department of Hematology of the First Medical Center of the PLA General Hospital from November 1st, 2013 to April 30th, 2024. The high-spectrum data and 4k image data of bone marrow cells were simultaneously collected using a microscopic hyperspectral-4k optical path integrated imaging system (with a spectral resolution of 400—1 000 nm). The high-spectrum data was used for model training, while the 4k image data recognized by morphologists was only used as a reference for labeling the high-spectrum data. The high-spectrum data set was divided into training set, validation set and test set in a ratio of 14∶6∶5. The training set and validation set were used to train and fine-tune the Spec-CNN model, and the test set was used to evaluate the model performance. The sensitivity, specificity ,accuracy ,and Kappa coefficient were calculated for comparing the manual annotation results as gold standard with the intelligent identification results of the Spec-CNN model. Five non-data set samples were used for external validation.Results:The acquired hyperspectral data and 4k imaging dataset comprised of 32 categories and 64 800 bone marrow cells. In the test set, the Spec-CNN model demonstrated weighted-average indicators on classification metrics across 32 cell types: sensitivity 87.79%, specificity 99.31%, and accuracy 98.78%, and Kappa coefficient 0.869. For external validation, the mean correct identification rate of bone marrow cells reached 83.28%.Conclusion:We successfully established an automatic classification method of bone marrow cells based on microscopic hyperspectral imaging and three-dimensional Spec-CNN. This method has a good automatic classification ability for 32 types of bone marrow nucleated cells, which has a certain auxiliary effect on improving the diagnosis efficiency of blood diseases for bone marrow morphologists.

Objective To understand the correlation between health beliefs and family environment of stroke patients. Methods A questionnaire survey was carried out on 115 stroke patients with the first onset of stroke by using the special health belief simple table (SF-HBMS) and the family environment scale (Chinese version FES-CV), and the correlation was analyzed. The scores of each subscale of the family environment were compared with the domestic norm. Results The total score of health belief (75.15 ± 10.20) was at the middle level. There were significant differences in age (F=8.41), education level (F=4.44), complications (F=4.05), family history (t=2.68) and first visit time (F=3.76) among different characteristics of health belief scores (P < 0.01 or 0.05). The score of intimacy (6.23 ± 1.27) in family environment, emotional expression score (5.30 ± 1.97), success score (5.88 ±1.62), cultural score (4.54 ± 2.20) and organizational score (5.60 ±1.67) were all lower than the domestic norm and spear. The score of shield score (3.16 ± 2.00) was higher than that of domestic norm (P<0.01 or 0.05), and the total score of health belief was positively correlated with family intimacy (r=0.190), emotional expression (r=0.204), culture (r=0.206) and tissue (r=0.227) (P<0.05), and was negatively correlated with the contradiction (r=-0.186, P<0.05); regression analysis, whether there were family history (β=0.338, P<0.01), first onset time (β=0.242, P<0.01), family intimacy (β=1.614, P<0.05), emotional expression (β=1.114, P<0.05) were the factors affecting the health belief level of first stroke patients. Conclusions The level of health belief is closely related to family environment. It is suggested that the clinical medical staff should pay attention to the negative emotion and family psychological intervention, provide psychological support for the patients and their families, promote the promotion of their health beliefs, and reduce the rate of recurrence and disability.

Objective To evaluate the effect of mind mapping-oriented health education on patient's fluid intake during hemodialysis intervals. Methods From June 2015 to April 2016, 72 patients with poor compliance with fluid intake were randomly divided into control group (n=36) and observation group (n=36). In the control group, routine health education was used and the observation group was treated with mind mapping-oriented health education. The two groups were compared before intervention and 6 months after that in terms of compliance with fluid intake and daily fluid intake, ultrafiltration volume and body weight gain/dry weight ratio and incidence of complications. Results In the observation group, the fluid intake compliance, daily fluid intake, ultrafiltration volume and body weight gain/dry weight ratio 6 months after intervention were superior to those of the control group (all P<0.05). The incidences of complications such as hypotension, hypertension, muscle spasms and cardiac arrhythmia were also significantly lower than those of the control group (P<0.05). Conclusion The health education based on mind mapping is helpful to enhance the degree of cognition of fluid intake compliance, improve self-efficacy of chronic diseases, control the growth of body weight during dialysis and reduce the incidence of complications.

OBJECTIVETo compare the differences in stroke volume (SV) and stroke volume index (SI) between Han and Korean-Chinese and to investigate the correlated risk factors.

METHODSA total of 1 647 Han and 876 Korean-Chinese aged 10-80 years were investigated. SV, SI, cardiac output, cardiac output index, heart rate (HR), systemic vascular resistance (SVR), systemic vascular resistance index (SVRI), and blood pressure were measured.

RESULTSSV/SI values in Korean-Chinese were lower than those in the Han of the same sex and age. Covariance analysis showed that, apart from the effect of sex, age and body mass index (BMI), the differences in SV and SI between the two cohorts were still significant (P<0.001). Multiple regression analysis revealed that the SV difference between the two ethnicities was affected (in descending order from a strong to weak correlation) by SVR, SVRI, HR, diastolic blood pressure, mean arterial pressure, BMI, and systolic blood pressure, while the SI difference was affected by SVR, SVRI, HR, mean arterial pressure, diastolic and systolic blood pressure, and BMI.

CONCLUSIONThe Fact that SV and SI in Korean-Chinese are lower than those in Han is related with higher SVR, HR and blood pressure in the Korean-Chinese.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group ; Blood Pressure ; physiology ; Child ; Female ; Humans ; Male ; Middle Aged ; Stroke Volume ; physiology ; Young Adult

Objective To assess the reliability and validity of summary of diabetes self-care activities for type 2 diabetes patients in China.Methods We selected 80 patients with type 2 diabetes to carry out our investigation and chose 10 of them to retest 2 weeks later.Results The general Cronbach's α was 0.62 with a reliability coefficient of 0.83(P<0.01).We got 8 factors with an accumulation contribution of 0.92 by main-ingredient and variance analysis.The factor loading was more than 0.80. Conclusion The Chinese version of SDSCA had good reliability and validity to evaluate the self-care activities of type 2 diabetes patients.

In order to understand deeply the present situation and countermeasures of skipping classes among undergraduates,this paper uses questionnaire investigation,mathematical statistics and logical analysis to study the medicos and non-medicos in Guangzhou.The result shows it is very important to pay more attention to education,improve the quality of teaching,and so on.