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2021 ◽  
pp. 130015
Author(s):  
Wan-lu Zhang ◽  
Zai-jian Yuan ◽  
Ding-qiang Li ◽  
Kun Zhang ◽  
Lun-yang Zhao

2021 ◽  
Vol 16 (2) ◽  
pp. 230
Author(s):  
Fauzia Yulianti Ramadhani

ABSTRACTThe Aedes aegypti index in the buffer area of the Class 1 Surabaya Port Health Office was in accordance with the Standard Operating Procedures (SOP) as stated in the Regulation of the Indonesian Ministry of Health Number 431 of 2007 (431/MENKES/SK/IV/2007) on Technical Guidelines for Control of Environmental Health Risks in Ports/Airports/Cross-Border in the Context of Health Quarantine. The Port Health Office has responsibilities to control environmental risks, one of which was the Aedes aegypti mosquitos in the borders. This study was descriptive observational and aimed to analyze the managerial components in Aedes aegypti mosquito control in the buffer area ofthe Class 1 Surabaya Port Health Office in Surabaya. The research variables (factors that determine control activities) were manpower, money, methods, materials, markets, machines, and information. The research subjects were two officers at Class 1 Surabaya Port Health Office and five cadres who monitored larva. Data were analyzed descriptively. The results explained that manpower, money, materials, market, technology, and information were all in accordance with the SOP of the Surabaya Port Health Office. However, the larva survey method did not comply with the SOP as officers still used the visual method. It was concluded that managerial components in Aedes aegypti control by Class 1 Surabaya Port Health Office followed the SOP except in their larva survey method. The researchers recommended carrying out a larva survey method by taking 1 larva from each container (single larva) at a time. Keywords: Aedes aegypti, control vector, managerial components.


2021 ◽  
Vol 4 (1) ◽  
pp. 69
Author(s):  
Carlos Ariel López

Presentamos el listado de especies de anuros del PN Iguazú y su área de amortiguación sobre la base de muestreos propios y la bibliografia técnica no publicada. Aportamos los primeros datos sobre los ensambles terrestres del PNI. Nuestra lista contiene 32 especies de anuros, 27 especies registradas por nosotros y cinco especies aportadas por la literatura. Tres especies son nuevos registros para el PNI: Ololygon aromothiella, Melanophryniscus devincenzii y Lithobates catesbeianus. En los muestreos de ensambles terrestres registramos 10 especies, de las cuales Physalemus cuvieri y Leptodactylus elenae fueron los más abundantes y con mayor distribucion en los ambientes estudiados. Los ensambles terrestres no mostraron estacionalidad, aunque evidenciaron relacion positiva con la temperatura. Nuestros resultados confirman al PN Iguazú como una importante area de conservación del ensamble más diverso de anuros de Argentina. 


2021 ◽  
Vol 13 (10) ◽  
pp. 5558
Author(s):  
Yong Zhang ◽  
Chao Jiang ◽  
Sheng Chen ◽  
Yuanyuan Zhang ◽  
Hui Shi ◽  
...  

Landscape changes due to urban expansion may severely influence urban biodiversity through direct and indirect effects. Hence, a comprehensive understanding of the urban expansion effects on species diversity is essential for conservation biologists, urban planners, and policymakers to help design more practical and effective conservation strategies. Here, based on monthly bird survey data of 12 university campuses distributed in the center and the Xianlin university town of Nanjing city, we first compared the differences of the campuses bird species richness, Shannon-Wiener, and Simpson indices. Then, we analyzed the effects of a variety of landscape attributes on the campuses bird species richness. Unlike other studies, we also constructed a 2 km buffer area surrounding each campus and analyzed the effects of the landscape attributes of the buffer area on species richness. We found that bird species richness was higher in the campus of Xianlin compared to those in the center. Landscape attributes played an important role on bird species richness, especially for the determinants in the buffer area. Specifically, species richness, Shannon-Wiener, and Simpson indices increased with the increasing area of water and green space both within the campus and the buffer area. Not surprisingly, bird species richness and diversity were more affected by fragmentation of the buffer area, increasing with the aggregation index and decreasing with the splitting index. Our study emphasized that landscape attributes of both campuses and buffer areas determined bird species richness and diversity, offering several practical implications for urban biodiversity maintenance and eco-friendly urban planning.


2021 ◽  
Author(s):  
Julie Rode ◽  
Claire Lambert ◽  
Lucile Marescot ◽  
Bastien Chaix ◽  
Julie Beesau ◽  
...  

AbstractFour field seasons of snow leopard (Panthera uncia) camera trapping inside Naryn State Reserve, performed thanks to citizen science expeditions, allowed detecting a minimal population of five adults, caught every year with an equilibrated sex ratio (1.5:1), and reproduction: five cubs or subadults have been identified from three litters of two different females. Crossings were observed one to three times a year, in front of most camera traps, and several times a month in front of one of them. Overlap of adults’ territories was observed in front of several camera traps regardless of their sex. Significant snow leopard presence was detected in the buffer area and at Ulan, situated at the reserve border. To avoid poaching on this umbrella species and its preys, extending the more stringent protection measures of the core zone to both the Southern buffer area and land adjacent to Ulan is necessary.


Author(s):  
Zhou Yujia ◽  
◽  
Shen Jin ◽  
Bin Wu ◽  
Chang Daofang

With the capacity limitation of the assembly line buffer area, a method for solving the mixed flow assembly line balancing problem considering material supply strategy is proposed. This paper analyzes the changes in material transportation time and assembly time due to different supply strategies, and proposes a method for jointly modeling the assembly line balancing and material supply problem. In the case of meeting the production cycle, with the buffer area capacity as the limit and the shortest production operation time as the goal, a joint optimization model including material handling time, material transportation time and assembly line working time is established, and the model is designed for the established model Genetic algorithm with piecewise coding. Finally, the proposed algorithm was evaluated using a workshop raw date, the simulation results show that although the indirect supply cost is relatively more than the direct supply, it can effectively alleviate the problem of the capacity limitation of the buffer area.


Author(s):  
N.B. ESKIN ◽  

In 1978, the Kavkazskiy Nature Biosphere Reserve became part of the World Network of Biosphere Reserves of UNESCO’s ‘Man and the Biosphere’ Programme. The goals, objectives and requirements for biosphere reserves have changed significantly over these 40 years. In this regard, the Kavkazskiy Biosphere Reserve ceased to meet these requirements. From the standpoint of present requirements, the structure of this Biosphere Reserve is disproportional: a very large core area with a disjunctive buffer area and the lack of a transition area. Since 1978 and up to the present day, the Kavkazskiy Biosphere Reserve has only possessed two functions of the whole range of those typical of biosphere reserves: the protection and the science and research support, which it qualitatively fulfils. It is both expedient and possible to eliminate discrepancies in the structure and functioning of the Kavkazskiy Biosphere Reserve with up-to-date requirements in the case of its expansion by means of forming a continuous buffer area and a transition area around the core area (the present Kavkazskiy Biosphere Reserve). The paper proposes a new structure of the Kavkazskiy Biosphere Reserve and describes the main results and prospects of its functioning.


2020 ◽  
Author(s):  
Zu-rui Lin ◽  
Shi-gang Li ◽  
Xiao-dong Sun ◽  
Xiang-rui Guo ◽  
Zhi Zheng ◽  
...  

Abstract Background: Cross-border malaria in Laiza City of Myanmar seriously compromised the achieving goal of malaria elimination in Yingjiang County of China. A pilot project on 3+1 strategy of joint cross-border malaria prevention and control was carried out in building border malaria buffer area in the both sides since 2017; Here, 3 was the three preventive lines in Yingjiang County to strengthen targeted measures of elimination malaria in China and +1 was a defined border area in Laiza City to adopt the integrated measures of malaria control in Myanmar. Methods: A retrospective analysis from 2015 to 2019 was conducted and the descriptive statistics was used to analyze and compare the data of malaria case detection, parasite prevalence and vector surveillance. Results: In +1 area of Myanmar from 2015 to 2019, the average of annual parasite incidence was (59.11±40.73) / 1000 and plasmodium vivax accounted for 96.27 % of total confirmed cases. After the pilot project, the annual parasite incidence, microscopic parasite prevalence rate and density of An. Minimus reduced by 89%,100% and 93.93% respectively, but the submicroscopic parasite prevalence rate was no significant difference between the two surveys (p =0.084). In Yingjiang County of China, neither indigenous nor introduced case was reported and 100% cases were imported from Myanmar since 2017. The average of annual importation rate from 2015 to 2019 was (0.47±0.15)/1000. After the pilot project, it reduced by 53% of whole county, 67% of the first preventive line, 52% of the second preventive line and 36% of the third preventive line respectively. Conclusion: The pilot project on 3+1 strategy has made remarkable effectiveness and a buffer area of border malaria was successfully established between Laiza City of Myanmar and Yingjiang County of China. The combined use and expanded coverage of indoor residual spraying and long-lasting insecticidal nets (LLINs) was more effective than only use of LLINs in reducing the transmission of plasmodium vivax caused by An. Minimus. It is necessary to adopt submicroscopic infection interventions to eliminate potential sources of infection in Laiza City of Myanmar.


2020 ◽  
Author(s):  
Zu-rui Lin ◽  
Shi-gang Li ◽  
Xiao-dong Sun ◽  
Xiang-rui Guo ◽  
Zhi Zheng ◽  
...  

Abstract Background: Cross-border malaria in Laiza City of Myanmar seriously affected Yingjiang County of China and compromised the national malaria elimination goal. A pilot project on 3+1 strategy of joint cross-border malaria prevention and control was carried out in building border malaria buffer area in the both sides since 2017; Here, 3 was the three preventive lines in Yingjiang County to strengthen targeted measures of elimination malaria in China and +1 was a defined border area in Laiza City to adopt the integrated measures of malaria control in Myanmar.Methods: A retrospective analysis from 2015 to 2019 was conducted that included case detection, parasite prevalence and vector surveillance. Descriptive statistics was used and the incidence or rates were compared. The annual parasite incidence in +1 area of Myanmar, the annual importation rate in Yingjiang County of China and the density of An.Minimus were statistically significant indictors to assess the effect of the joint interventions.Results: In +1 area of Myanmar from 2015 to 2019, the average of annual parasite incidence was (59.11±40.73) / 1000 and plasmodium vivax accounted for 96.27 % of total confirmed cases. After the pilot project, the annual parasite incidence, microscopic parasite prevalence rate and density of An. Minimus reduced by 89%,100% and 93.93% respectively, but the submicroscopic parasite prevalence rate was no significant difference between the two surveys (p =0.084). In Yingjiang County of China, neither indigenous nor introduced case was reported and 100% cases were imported from Myanmar since 2017. The average of annual importation rate from 2015 to 2019 was (0.47±0.15)/1000. After the pilot project, it reduced by 53% of whole county, 67% of the first preventive line, 52% of the second preventive line and 36% of the third preventive line respectively. The density of An. Minimus in the first preventive line reduced by 94.51% and did not have significant difference between that of+1 area of Myanmar (Z value=-1.18,p value=0.24). Conclusion: The pilot project on 3+1 strategy has made remarkable effectiveness and a buffer area of border malaria was successfully established between Laiza City of Myanmar and Yingjiang County of China. The combined use and expanded coverage of indoor residual spraying and long-lasting insecticidal nets (LLINs) was more effective than only use of LLINs in reducing the transmission of plasmodium vivax caused by An. Minimus. It is necessary to adopt submicroscopic infection interventions to eliminate potential sources of infection in Laiza City of Myanmar.


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