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Home ranges and activity patterns of Sunda pangolins Manis javanica (Pholidota: Manidae) in Vietnam
Russell J. Gray,Dung Van Le,Huyen Thi Thanh Nguyen,Long Nhat Cau,Tan Van Nguyen,Thong Van Pham,Daniel Willcox,Tiffany Chen,Thai Van Nguyen 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.3
This study provides an update on the movement ecology of the Sunda pangolin (Manis javanica) in threedistinct ecoregions of Vietnam. Using radio telemetry, we tracked 12 pangolins rescued from the illegalwildlife trade and translocated to protected areas. We found that the average home range of translocatedSunda pangolins was 1.58 km2 and did not vary significantly between sexes, mass, or habitat. However,there was a marked decrease in range size with decreasing sizes of suitable forest space and terrain, or alocalized abundance of resources in some locations. Pangolins were most active from 03:00 to 04:00. Thestudy highlights the need for further research to fully understand the ecology of this unique and enig matic species.
Application of Electrocoagulation for Printing Wastewater Treatment: From Laboratory to Pilot Scale
Thuy, Nguyen Thi,Hoan, Nguyen Xuan,Thanh, Dang Van,Khoa, Pham Minh,Tai, Nguyen Thanh,Hoang, Quang Huy,Huy, Nguyen Nhat The Korean Electrochemical Society 2021 Journal of electrochemical science and technology Vol.12 No.1
This study reports for the first time the application of electrocoagulation (EC) from laboratory to pilot scales for the treatment of printing wastewater, a hazardous waste whose treatment and disposal are strictly regulated. The wastewater was taken from three real printing companies with strongly varying characteristics. The treatment process was performed in the laboratory for operational optimization and then applied in the pilot scale. The weight loss of the electrode and the generation of sludge at both scales were compared. The results show that the raw wastewater should be diluted before EC treatment if its COD is higher than about 10,000 mg/L. Pilot scale removal efficiencies of COD and color were slightly lower compared to those obtained from the laboratory scale. At pilot scale, the effluent CODs removal efficiency was 81.9 - 88.9% (final concentration of 448 - 992 mg/L) and color removal efficiency was 95.8 - 98.6% (final level of 89 - 202 Pt-Co) which proved the feasibility of EC treatment as an effective pre-treatment method for printing wastewater as well as other high colored and hard-biodegradable wastewaters.