Application of the Coastal Hazard Wheel for Coastal Multi-Hazard Assessment and Management in the Guang-Dong-Hongkong-Macao Greater Bay Area

The coasts of Guangdong-Hong Kong-Macao Greater Bay Area (GBA) are facing threats and challenges from rising sea levels, frequent extreme events and human intervention. In this study, the Coastal Hazard Wheel (CHW) was used to classify the coasts of GBA, assess its hazard change from 2010 to 2020, identify hazards hotspots and explore available coastal management options. The results show that the coastal types of GBA in 2010 and 2020 are consistent, with delta/low estuary island and hard rock slope as the main types. GBA is vulnerable to ecosystem disruption, saltwater intrusion, gradual inundation and flooding hazards. Compared with 2010, the high risk proportion of each hazard in 2020 decreased significantly, but the high risk of flooding increased slightly. All kinds of hazards are interdependent and influenced by each other. The Pearl River Estuary, the east bank of Yamen Waterway, the west bank of Huangmao Sea and Dapeng Bay show very high hazard vulnerability, and the flooding risk is the highest. Soft measures such as coastal zoning, tsunami warning systems, wetland restoration and hazard simulation are most widely used in coastal management. CHW is applicable to GBA’s coastal hazard vulnerability assessment, which provides a case study for coastal risk assessment of GBA and has certain reference significance for hazard management and sustainable development for the Bay Area.

INVESTIGATION AND ANALYSIS OF ONLINE TEACHING QUALITY AND CONCLUSION THINKING DURING EPIDEMIC PREVENTION AND CONTROL—CASE STUDY OF GUANG DONG OCEAN UNIVERSITY

The research conducted investigation and analysis of the online teaching of Guangdong Ocean University during the epidemic prevention and control period from the following aspects: basic situation of online teaching for teachers and students, assessment of online teaching courses, online teaching evaluation and satisfaction of teachers and students, major problems of online teaching, and made a conclusion reflection based the deficiency in existence, then put forward some suggestions for the development of blended teaching in future, hoping to provide reference and inspiration for universities to carry out blended online teaching in an orderly and deeply way.

Ultrosonogarphic and histological charac-teristics of the digestive tract in dogs with parvoviral enteritis

Since the clinical manifestation of enteri-tis of various etiologies has a similar picture, and parvovirus enteritis has a high mortality rate, early diagnosis of this disease is im-portant. A number of publications demon-strate changes in ultrasound parameters dur-ing inflammatory bowel diseases. The article is devoted to comparison of ultrasound and histological changes in the wall of the stom-ach and small intestine with parvovirus en-teritis in order to distinguish the most spe-cific ultrasound markers. Object of the study – 53 dogs of mixed breeds of both sexe with a confirmed diagnosis of parvovirus enteri-tis by polymerase chain reaction in real time from the age of 6 weeks to 7 months. Re-search were conducted at the Stavropol Vet-erinary Center named after Pirogov and Vet-erinary Center of the Stavropol State Agrari-an University, by the use of SIUI Apogee 1100 Omni scanner (Shantou Institute of Ultrasonic Instruments Co., Ltd., Guang-dong, China), according to the generally accepted method using a multi-frequency linear sensor with a frequency of 5-13 MHz in B-mode. The most characteristic ultrason- ic manifestations of canine parvovirus enteri-tis are hypotension and ectasia of the stom-ach and loops of the small intestine with the presence of anechogenic fluid content in their cavity; thickening of the surface layer of the mucosa in the form of a hyperechoic strip, a decrease in the ratio of the mucous layer to the entire wall thickness of the duo-denum and jejunum by more than 2 times and increased echogenicity of the mucous layer. This picture is a result of the partial necrosis and desquamation of villi, prolifera-tion of cell infiltrate in the mucous layer itself, consisting of lymphocytes, macro-phages, a small number of histiocytes and fibroblasts.

Organoleptic Evaluation of Amomi Fructus and Its Further Background Verified via Morphological Measurement and GC Coupled with E-Nose

The present study investigated the maneuverability and reasonability of sensory analysis, which has been applied in TCM identification for a long time. Ten assessors were trained and generated the human panel to carry out the organoleptic evaluation of twenty-five batches of Sha-Ren samples. Accordingly, samples were scored from 0 (lowest) to 10 (highest) for sensory attributes. Based on this, samples were divided into three classes: high class (Yang-Chun-Sha from Guang-Dong), moderate class (Yang-Chun-Sha samples from Yun-Nan and Guang-Xi), and low class (Lv-Qiao-Sha from marketplaces). For further background, three instrumental approaches were employed: morphological measurement with three indices (longitudinal diameter, transverse diameter, and 100-fruit weight), GC for determination of bornyl acetate contents, and E-nose for aromatic fingerprint. It is demonstrated in the results that GC and E-nose analyses were in great agreement with organoleptic evaluation. It gives insights into further studies on searching better morphological indicators and improving discriminant model of E-nose.

Research and Application of New Technologies in Engineering Disaster Prevention

The systematic study various kinds disasters which are likely to meet in civil engineering and construction of Guang dong Science Center. The research includes the study of environmental geotechnical engineering, the technology for treatment of large -area soft soil, the art of seismic isolation, the fire resistance, and the study of wind resistance of large-span shell structures. Based on these theoretical and experimental results, the authors have put forward some new technique for the key problems in design and construction.