The Structure of Digestive Tract Coordinating Digestion and Respiration in an Air-Breathing Weatherloach, Misgurnus anguillicaudatus.

To clarify how the digestive tract of the weatherloach, Misgurnus anguillicaudatus, serves a dual function of digestion and respiration simultaneously, the histological structures of its digestive tract, the passage of digesta and air passing through its intestine and the rate of intestinal evacuation have been studied. The results indicate that the digestive tract is divided into five functional regions, i.e., esophagus, anterior intestine, middle intestine, posterior intestine and rectum. The diverse intestinal structures have the specialized function of coordinating digestion and respiration. An X-ray barium meal examination showed in the normal breathing state, the contents of the intestine are diffusely semifluid, and air is distributed as bubbles in the dorsal intestine 2 h after feeding. After 5 h, the contents accumulated in the mid and posterior intestine, and gas flowed above the contents as bundles. After 8 h, the intestinal food was basically evacuated. In the intestinal air-breathing restricted group, the contents of the intestine remained diffuse, and a large number of digesta entered and remained in the rectum after 5 h. After the inhibition was relieved, the contents of the rectum were rapidly discharged. Measurement of the intestinal evacuation rate in the intestine showed that the evacuation of the intestinal contents lagged behind that of the normal group in the air-breathing restricted group. Compared to the normal state and inhibited GAB (gastrointestinal air breathing), we could deduce that GAB could promote the movement of the intestine.

Determinants of physicians' online medical services uptake: a cross-sectional study applying social ecosystem theory.

OBJECTIVE: To investigate the determinants of willingness and practice of physicians' online medical services (OMS) uptake based on social ecosystem theory, so as to formulate OMS development strategies. DESIGN: Cross-sectional survey. SETTING: Research was conducted in two comprehensive hospitals and two community hospitals in Jiangsu, China, and the data were gathered from 1 June to 31 June 2020. PARTICIPANTS: With multistage sampling, 707 physicians were enrolled in this study. OUTCOME MEASURE: Descriptive statistics were reported for the basic characteristics. χ2 test, Mann-Whitney U test and Spearman's correlation analysis were used to perform univariate analysis. Linear regression and logistic regression were employed to examine the determinants of physicians' OMS uptake willingness and actual uptake, respectively. RESULTS: The mean score of the physicians' OMS uptake willingness was 17.33 (range 5-25), with an SD of 4.39, and 53.3% of them reported having conducted OMS. In the micro system, factors positively associated with willingness included holding administrative positions (b=1.03, p<0.05), OMS-related awareness (b=1.32, p<0.001) and OMS-related skills (b=4.88, p<0.001); the determinants of actual uptake included holding administrative positions (OR=2.89, 95% CI 1.59 to 5.28, p<0.01), OMS-related awareness (OR=1.90, 95% CI 1.22 to 2.96, p<0.01), OMS-related skills (OR=2.25, 95% CI 1.35 to 3.74, p<0.01) and working years (OR=2.44, 95% CI 1.66 to 3.59, p<0.001). In the meso system, the hospital's incentive mechanisms (b=0.78, p<0.05) were correlated with willingness; hospital advocated for OMS (OR=2.34, 95% CI 1.21 to 4.52, p<0.05), colleagues' experiences (OR=3.81, 95% CI 2.25 to 6.45, p<0.001) and patients' consultations (OR=2.93, 95% CI 2.02 to 4.25, p<0.001) were determinants of actual uptake. In the macro system, laws and policies were correlated with willingness (b=0.73, p<0.05) and actual uptake (OR=1.98, 95% CI 1.31 to 2.99, p<0.01); media orientation was also associated with willingness (b=0.74, p<0.05). CONCLUSION: Multiple determinants influence physicians' OMS application. Comprehensive OMS promotion strategies should be put forward from multidimensional perspectives including the micro, meso and macro levels.

Online medical services utilization evaluated through the lens of socioecological theory and the information-motivation-behavioral skills model: evidence from China.

Online medical services (OMS) have become increasingly advantageous, but there are still several barriers to utilization among patients. This study aims to explore the factors influencing OMS utilization (OMSU) for patients in micro-, meso-, and macrosystems based on socioecological theory (SET) and from the perspective of the information-motivation-behavioral skills (IMB) model. We selected 1065 participants through multistage stratified cluster random sampling in Jiangsu, China. In microsystems, information and behavioral skills were positively associated with intention (ß = 0.84; ß = 3.21) and actual utilization (OR = 1.69; OR = 1.69). Education level (ß = 0.83) and personal motivation (ß = 1.68) were positively related to intention. Chronic diseases (OR = 2.03) had a positive relationship with actual use. In mesosystems, recommendations from people around the patients (ß = 1.14; OR = 1.99), provision of OMS in the nearest primary medical facility (ß = 0.98; OR = 3.60), and provision of instructional information by medical institutions (ß = 1.01; OR = 1.65) were related to OMSU. The average monthly household income (ß = 0.54) was related to intention. Patients who had information about the OMSU experiences of people around them (OR = 1.73) correlated with actual utilization. In macrosystems, the social medical insurance type (OR = 0.66) was associated with OMSU. This study supports the applicability of the SET and IMB model to interpret patients' OMSU.

Complete mitochondrial genome of Rhynchocinetes durbanensis (Rhynchocinetidae: Rhynchocinetes).

The complete mitochondrial genome of Rhynchocinetes durbanensis (Rhynchocinetidae: Rhynchocinetes) was sequenced in this study. The genome sequence was 17,695 bp in size, with the base composition of 35.14% A, 32.98% T, 20.34% G and 11.55% C of the light strand. The gene order and genes were the same as that found in other previously reported shrimps, including 13 protein-coding genes, 24 transfer RNA genes and two ribosomal RNA genes. Except for ND5, ND4, ND4L, ND1 genes and eight tRNA genes and two ribosomal RNA genes, all other mitochondrial genes were encoded on the heavy strand. The start codon of COX1 gene was not determined. These complete mitogenome data provide the basis for taxonomic and conservation research of Rhynchocinetes durbanensis, and closely related species.