Research

Abstract. Beijing has suffered from heavy local emissions as well as regional transport of air pollutants, resulting in severe atmospheric fine-particle (PM2.5) pollution. This study developed a combined method to investigate source types of PM2.5 and its source regions during winter 2016 in Beijing, which include the receptor model (positive matrix factorization, PMF), footprint and an air quality model. The PMF model was performed with high-time-resolution measurements of trace elements, water soluble ions, organic carbon and elemental carbon using online instruments during the wintertime campaign of the Air Pollution and Human Health in a Chinese Megacity – Beijing (APHH-Beijing) program in 2016. Source types and their contributions estimated by PMF model using online measurements were linked with source regions identified by the footprint model, and the regional transport contribution was estimated by an air quality model (the Nested Air Quality Prediction Model System, NAQPMS) to analyze the specific sources and source regions during haze episodes. Our results show that secondary and biomass-burning sources were dominated by regional transport, while the coal combustion source increased with local contribution, suggesting that strict control strategies for local coal combustion in Beijing and a reduction of biomass-burning and gaseous precursor emissions in surrounding areas were essential to improve air quality in Beijing. The combination of PMF with footprint results revealed that secondary sources were mainly associated with southern footprints (53 %). The northern footprint was characterized by a high dust source contribution (11 %), while industrial sources increased with the eastern footprint (10 %). The results demonstrated the power of combining receptor model-based source apportionment with other models in understanding the formation of haze episodes and identifying specific sources from different source regions affecting air quality in Beijing.

The intensity and frequency of extreme weather and climate events are expected to increase due to anthropogenic climate change. This systematic review explores extreme events and their effect on gender-based violence (GBV) experienced by women, girls, and sexual and gender minorities. We searched ten databases until February, 2022. Grey literature was searched using the websites of key organisations working on GBV and Google. Quantitative studies were described narratively, whereas qualitative studies underwent thematic analysis.

Advancements in the field of research and development have paved toward the use of herbal agents to cure and control health maladies. Milk thistle (Silybum marianum L.) is one of the herbs that pos...

ginnyrules27 is a fanfiction author that has written 61 stories for Harry Potter, Lion King, Glee, Little Mermaid, Treasure Planet, Rise of the Guardians, Outsiders, Charmed, Descendants, 2015, Web Shows, High School Musical, Lord of the Rings, and Avatar: Last Airbender.

Enviropaedia tackles major environmental challengesand provides broad overview perspectives. Enviropaedia highlights controversial issues and explores conflicting values and viewpoints. Read more on Game Farming

Two things in hunting are guaranteed: fenced game farms will be its ruin and fenced game farms will be its salvation. And therein lies the debate. And what a heated debate it is. People pick sides, call names, turn red, fuss and fume while anti-hunters sit back and smirk.

Skills and Knowledge for Game Farm Helper

The analysis of game farming is set in the Eastern Cape, South Africa. Game farming reorders the use, meaning and value of land and animal species. Ho…

South Africa is home to approximately 10 000 game farms, with the wildlife industry contributing significantly to the national economy through the biodiversity economy. As part of the biodiversity economy, the wildlife economy is steadily expanding to focus on wildlife and game farming for ecotourism, the supply of game meat and associated products and restocking and recovering wildlife populations. Game farming involves the breeding and management of wildlife species for services and products in the wildlife economy.

Catskill Game Farm Inc. was a family owned petting zoo in the town of Catskill, New York, United States, which operated from 1933 to 2006. The Game Farm closed permanently on Columbus Day October 9, 2006, after seventy-three years of operation.

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