No abstract

With the gradual deepening of people’s understanding of the concept of environmental protection, this situation has brought new challenges to the preservation and packaging of food. Pure green, natural, and harmless edible film has become a hot topic. Edible protein membranes include animal protein membrane, plant protein membrane, and composite protein membrane. They are mainly used in the field of food production and food safety. The traditional food film has a poor water barrier in a humid environment, which cannot effectively avoid the anaerobic respiration of fruits. At the same time, it will also cause environmental pollution. In order to solve these problems, this paper studies the preparation and preservation of soybean protein isolate based on the Internet of things. Firstly, polyphenols were fused with soybean protein isolate by ultrasonic technology to form an edible fresh-keeping film. The edible membrane of the soybean protein isolate was tested, and the optimum conditions for the formation of the edible membrane were determined by the orthogonal test. The effects of soybean protein isolate, glycerol, reducing agent, and other additives on the film-forming properties were analyzed. Finally, the changes in properties and preservation indexes after film formation were analyzed. The results showed that the film-forming temperature of polyphenol soybean protein isolate edible film was positively correlated with the film properties. The prepared food preservative film can be used for the preservation of vegetables and other foods and has a good retention effect on food nutrients.

BackgroundLeft main coronary artery atresia (LMCAA) is an extremely rare abnormality and only <100 cases have been reported worldwide. We describe the clinical manifestations, imaging features, prognosis, and treatments of LMCAA who were admitted in our department, which aimed to improve the clinical diagnosis and treatments of LMCAA in children.MethodsA retrospective study identified 12 patients diagnosed with congenital left coronary artery atresia at Pediatric Heart Center of Beijing Anzhen Hospital from June 2010 to June 2019. The clinical characteristics, imaging data, and treatment follow-up were analyzed.ResultsAmong the 12 cases, 8 were boys and 4 were girls; the age of onset was 2 months to 2 years old (median age 7 months); the age of diagnosis was 7 months to 6 years old (median age 2 years and 11 months). At the initial diagnosis, there were 4 cases of respiratory tract infection with cardiac murmur, 3 cases of cardiac shadow enlargement, 1 case of recurrent syncope, 2 cases of feeding difficulty with cardiac enlargement, and 2 cases of simple cardiac murmur. In 12 cases of electrocardiogram examination, 7 cases showed pathological Q waves of lead I, AVL and v4–v6; in 12 cases of chest X-ray examination, 8 cases showed cardiac shadow enlargement; in 12 cases of our hospital's first cardiac ultrasound examination, 4 cases were definitely diagnosed, and 8 cases showed the possibility of left coronary artery abnormality; in 5 cases of cardiac coronary CT angiography examination, 2 cases were confirmed, 2 cases reported suspected left coronary artery abnormality, and 1 case did not report abnormality; All cases were definitely diagnosed in 8 cases of angiography. Follow-up was performed from 1 to 8 years; one case died suddenly, one case of syncope after activity was treated by oral medication, 3 cases received open coronary angioplasty and mitral valvuloplasty, recovered well after operation, the rest of the children were treated by oral medication, and the symptoms are stable at present.ConclusionsLeft main coronary artery atresia is difficult to diagnose and can result in heart failure early in life. Timely diagnosis and reasonable treatment are the keys to improve the prognosis.

In order to solve the "information island" problem in the process of government affairs informatization, the Chinese government has vigorously carried out the integration of government affairs information resources and achieved certain results. However, government affairs information resources still have problems such as unknown sources, irregular information arrangement, unclear sharing definition, and overly rough open design. Doing a good job of internal data risk control compliance, standardizing the qualification approval of outsourcing organizations, and formulating standards and policies for government data will help achieve legal compliance for government data integration.