The effect of pretreated method to remove the non-collagenous protein by using alkaline and enzyme Alcalase, as well as the temperature and time for extracting on the properties of gelatin from tra catfish skin were investigated. Yields of gelatin extracted at 70 °C for 1h from pretreated skin by enzyme method (16.2%) was significantly higher than that of the sample by alkaline method (12.14%). However, the gel strength of gelatin from skin treated via enzyme Alcalase was lower than gelatin sample pretreated by alkaline while the turbidity values was higher than gelatin from skin pretreated via alkaline. From SDS-PAGE profile, gelatin from skin pretreated by alkaline consisted of two different α- chains in protein pattern while enzymatic gelatin had low molecular weight peptides. The FT-IR spectra showed the lower wavenumber in amide I and III of enzymatic gelatin in compare to alkaline gelatin by the loss of triple helical structure during enzyme treatment. From the results, the using enzyme for pretreated material has potential to replace the alkaline method for gelatin production with purpose to reduce chemical waste caused serious ecological issues.
Objective Open surgical abdominal aortic repair, involving the excision of dilated area and placement of a synthetic graft is a common, major operation done to treat an aortic aneurysm. This procedure, however, is a challenge for cardiovascular surgeons because of its postoperative mortality and complications. The objective of this research is to study the prognostic factors and early results of open surgical repair (OSR) for abdominal aortic aneurysms (AAA), beginning below the renal arteries. Methods This is a descriptive retrospective study on patients with infrarenal AAA, who underwent OSR to replace the aneurysmal sac with a silver coated synthetic graft at Thai Binh Provincial General Hospital from June 2019 to June 2021 Results 40 cases including 28 males and 12 females were eligible for our study. The average age of the studied groups was 68.7 ± 8.95 years old. Common observed clinical symptoms of this demographic included hypertension, lipid metabolism disorders. Most of the aneurysm sacs were rhomboid-shaped with the diameter and the neck length ranged of 5-8 cm and 1.8 ± 0.75cm respectively. The success rate of the procedure was 100%. Pneumonia was the most commonly seen postoperative complication. There was no complication related to the grafts. 02 deaths were reported after surgery due to multi-organ failure. GA (Glasgow Aneurysm) score was excellent and the Hardman score was a good predictor of mortality. Conclusions: OSR was a common treatment method for ruptured AAA and AAA that can not be indicated with endovascular placement of an aortic stent graft (EVAR). It was crucial to take prognostic factors into consideration so as to avoid postoperative complications.
Từ đầu năm 2009 Bệnh viện Trung ương Huế đã được trang bị máy CT-64 lát cắt, chúng tôi đã phát hiện nhiều trường hợp tim bẩm sinh phức tạp như tứ chứng Fallot, thất phải hai đường ra, tuần hoàn bàng hệ chủ-phổi phức tạp, bất sản động mạch phổi có kèm thông liên thất, thất trái độc nhất, hẹp eo động mạch chủ, đứt đoạn động mạch chủ, phình động mạch vành, còn ống động mạch…Hầu hết các trường hợp được phẫu thuật đều có kết quả phù hợp với chẩn đoán. Với độ phân giải từng phần cao và tái tạo hình ảnh 3 chiều, CT-64 lát cắt tim mạch thể hiện rất hiệu quả các cấu trúc giải phẫu và mối tương quan giữa chúng, ngay cả ở các trẻ nhỏ. CT-64 lát cắt tim mạch đặc biệt hữu ích để khảo sát hình ảnh của các vùng mà siêu âm tim không thể nhìn thấy rõ như các mạch máu lớn. CT-64 lát cắt tim mạch là phương pháp khám xét nhanh và không xâm nhập, có thể chẩn đoán chính xác các bệnh tim bẩm sinh, khắc phục các hạn chế của siêu âm tim như cửa sổ âm khó khảo sát và cung cấp các thông tin cần thiết tổng thể cho phẫu thuật.
Cervical cancer is really a public health problem that should be prioritized for prevention, interventions and early screening, especially in developing countries. A cross-sectional study was conducted at a Hanoi Medical University vaccination unit in 2018 to identify the prevalence of and related factors with cervical cancer screening among female clients in Hanoi, Vietnam. We collected data using a structured questionnaire among 405 female clients. The results showed that the prevalence of study participants who had the decision on cervical cancer screening was 79.5%. Associated factors of cervical cancer screening among female clients were have had sex with 1 person (OR= 42.5; 95%CI= 5.6-311.2), 2 people (OR= 29.7; 95%CI= 3.84- 230) and 3 people (OR= 41.6; 95%CI= 4.68- 369.9). There is a statistically significant relationship between two variables [average monthly income (OR= 2.79, 95%CI= 1.19- 6.56), and sex status (OR=20.9, 95%CI= 2.52- 173.39) with the decision to screen for cervical cancer. Enhancing the proportion of cervical cancer screening by fostering knowledge and awareness about human papillomavirus, and cervical cancer and using health services assessment will be highly recommended in Vietnam.
Constructed wetlands (CWs) have been applied to treat various wastewater types including domestic wastewater, livestock wastewater, industrial wastewater and acid mine drainage with the advantages of low cost, environmentally-friendly technology and high treatment efficiency. Mining wastewater with the high content of heavy metals often causes negative impacts on the ecosystems and human health. In this study, the capacity of using limestone, hydrolyzed rice husk as filter materials and the CWs planted with Caladium bicolor to treat iron and manganese in artifical wastewater treatment are evaluated. The wetland model has the size of length x width x height of 50 cm x 15 cm x 20 cm. 10 liters of the synthetic wastewater were used and initial Fe and Mn concentrations varied from 5, 10, 15, 20 and 25 mg/L. The results showed that limestone and hydrolyzed rice husk with the weight ratio of 5 : 2.5 (kg) had good ability to remove Fe and Mn with treatment efficiencies of approximately 99.8% after 144 hours. During a 24-hour retention time, the Fe and Mn concentrations in the wastewater decreased rapidly in CWs and the initial Fe and Mn concentrations affected treatment performance. When the initial Fe and Mn concentrations were below 20 mg/L, treatment efficiencies of Fe and Mn reached about 99% after 144 hours in the CWs and Fe and Mn concentrations met the national regulation QCVN 40: 2011/BTNMT, column B. The study highlights the potential applications of C. bicolor in CWs with the use of natural limestone and hydrolyzed rice husk as substrates in treatment of iron and manganese-contaminated wastewater. Keywords: Constructed wetlands, Caladium bicolor, limestone, rice husk, iron, manganese.
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